WO2014154918A1 - Re-spooling unit for a machine used to treat strip material - Google Patents

Re-spooling unit for a machine used to treat strip material Download PDF

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Publication number
WO2014154918A1
WO2014154918A1 PCT/ES2014/000020 ES2014000020W WO2014154918A1 WO 2014154918 A1 WO2014154918 A1 WO 2014154918A1 ES 2014000020 W ES2014000020 W ES 2014000020W WO 2014154918 A1 WO2014154918 A1 WO 2014154918A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
rewind
coil
shaft
operator
Prior art date
Application number
PCT/ES2014/000020
Other languages
Spanish (es)
French (fr)
Inventor
Jordi Prat Gil
David Miravete Guerrero
Original Assignee
Comexi Group Industries, S.A.U
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Comexi Group Industries, S.A.U filed Critical Comexi Group Industries, S.A.U
Priority to EP14776504.4A priority Critical patent/EP2979999A4/en
Publication of WO2014154918A1 publication Critical patent/WO2014154918A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2207—Changing the web roll in winding mechanisms or in connection with winding operations the web roll being driven by a winding mechanism of the centre or core drive type
    • B65H19/2215—Turret-type with two roll supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/413—Supporting web roll
    • B65H2301/4139—Supporting means for several rolls
    • B65H2301/41394—Supporting means for several rolls moving independently from each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/50—Driving mechanisms
    • B65H2403/52—Translation screw-thread mechanisms

Definitions

  • the present invention relates generally to a rewinding unit for web material treatment machine, and more particularly to a rewinding unit for rewinding a web material after it has been treated, for example printed, cut, punched , etc., in a treatment machine, for example a printing machine, a longitudinal cutting machine, a punching machine, etc.
  • a treatment machine for example a printing machine, a longitudinal cutting machine, a punching machine, etc.
  • the rewinding units generally comprise a rewind shaft rotatably driven by an actuation means on which the web material is wound, and a pressure roller pressing against the web material wound on the rewind shaft.
  • the international patent application WO 2012/164115 A1 discloses a rewinding unit comprising two facing bank walls, in one of which a rotating plate is installed. A pair of parallel rewinding shafts are supported in cantilever, together with their drive motors, on said rotary plate so that they can be individually displaced in a radial direction relative to the rotating plate along a linear guide system by action. of drive means. A pair of support clamps that are individually movable along another system of linear guides by the action of other driving means are installed on the bed wall opposite the turntable.
  • These support clamps are configured to grasp, support and accompany the distal ends of the rewinding shafts.
  • the turntable is rotated while the grippers are open to alternately place one of the rewind trees in a rewind position and the other rewind shaft in an extraction position.
  • a pressure roller is installed swingably on rocker arms operated by one or more pneumatic cylinders so that the pressure roller presses against the coil being formed on the rewinding shaft which is in the rewinding position.
  • the speed of movement of the rewinding shaft is controlled by the control means by a displacement setpoint obtained as a result of the speed of the web material, the thickness of the web material and the instantaneous diameter of the reel, fed by a setpoint of position of the pressure roller obtained from a position sensor associated with the rockers supporting the pressure roller.
  • a drawback of the rewinding unit of the international patent application WO 2012/164115 A1 is that the tilting installation of the pressure roller is complex, expensive, and also makes the rewinding unit bulky, which increases the overall volume of the rewinding unit. Band material treatment machine to which it is associated.
  • the control of the operation of the rewinder unit and the pressure with which the coil is formed can be inaccurate due to the need to combine the displacement setpoint of the rewind shaft with the pressure setpoint of the pressure roller.
  • the present invention provides a rewinding unit applicable to a band material treatment machine, such as for example a printing machine, a longitudinal cutting machine, a punching machine, etc.
  • the rewinding unit of the present invention comprises a bedplate, a guide means installed in said bed, a rewind shaft rotatably driven by a shaft driving means and on which a web material is wound to form a reel, said rewinding shaft movable along said guide means as the diameter of said reel grows, and a pressure roller installed in the bed so that it presses against the forming spool on the rewinding shaft.
  • the rewinding unit of the present invention is characterized in that said pressure roller is installed in a fixed position in the bedplate, and displacement drive means or contrast means perform or permit a radial displacement of the rewinding shaft while maintaining a pre-set winding pressure between the forming spool on the rewind shaft and the pressure roller.
  • the fact of having a fixed pressure roller has the advantage of allowing to reduce the distance from a treatment unit, for example printing unit, longitudinal cutting unit, drilling unit, etc., from which the web material is supplied to the rewinder unit, up to the pressure roller compared to the rewinding units of the state of the art provided with a movable pressure roller mounted on a mobile frame driven by corresponding actuating means, with the additional advantage that said distance from the Treatment unit until pressure roller is always constant.
  • a treatment unit for example printing unit, longitudinal cutting unit, drilling unit, etc.
  • both the angle of entry of the web material to the pressure roller and the position of the line of contact of the latter with the coil in formation on the rewinding shaft are kept constant and do not vary at any time during the formation of the coil.
  • the fact that the position of the pressure roller is fixed facilitates the configuration of the rewinding unit to be able to make a central-peripheral rewinding unit, and therefore allows the pressure roller to be optionally motorized so that it contributes to regulate the tension of the material in band in the treatment zone of the treatment machine and to obtain a desired rewinding tension.
  • the rewinding unit When to maintain the preset rewinding pressure, said displacement drive means are used, which move the rewind shaft by one or more servomotors, the rewinding unit preferably includes a coil diameter detector that supplies a signal representative of the instantaneous diameter of the coil in formation, and control means controlling the operation of said one or more servomotors by means of a command obtained from at least said signal representative of the instantaneous diameter of the coil and of a constant parameter representative of the fixed position of the coil. Pressure roller according to the preset rewind pressure.
  • presetting means When said presetting means are used to maintain the preset rewinding pressure, they oppose the displacement of the rewinding shaft caused by the growth of the diameter of the reel by means of one or more piston and cylinder assemblies that are in communication with a reel.
  • source of dynamic fluid supply through at least one pressure regulator control means of the rewinder unit controls the operation of said at least one pressure regulator in accordance with said pre-set winding pressure.
  • the rewinder unit of the present invention can be implemented as a turret type rewinding unit as the one described in the aforementioned international patent application WO 2012/164115 A1, where there are two parallel rewinding shafts supported in cantilever on a rotating plate which is driven to alternate the positions of the rewinding shafts between a rewind position and a position of extraction.
  • the pressure roller may be rotatably driven by corresponding pressure roll driving means.
  • the present invention provides a method of rewinding web material using a rewinding unit, which comprises a bedplate with a guide means installed therein, a rewind shaft rotatably driven by a drive means of tree and on which a web material is rolled to form a reel, said rewind shaft being radially displaceable along said guide means as the diameter of said reel grows, and a pressure roller installed in the bank so that it presses against the coil in formation on the rewind shaft.
  • the method of the present invention is characterized by the steps of maintaining said pressure roller in a fixed position in the bed, and making or permitting a radial displacement of the rewind shaft by means of displacement drive means or controlled contrast means for maintaining a preset winding pressure constant between the pressure roller and the forming coil on the rewinding shaft as the diameter of the forming coil increases.
  • the method comprises detecting the instantaneous diameter of the coil in formation on the rewinding shaft by means of a coil diameter detector, and controlling by means of a control means the operation of one or more servomotors of the drive means of displacement by means of a command obtained at least from a signal representative of the diameter instantaneous of the coil supplied by said coil diameter detector and of a constant parameter representative of the fixed position of the pressure roller according to said pre-set rewind pressure.
  • the method comprises regulating by means of at least one pressure regulator the pressure of a dynamic fluid supplied to at least one cylinder and piston assembly of the contrast media in accordance with said preset rewind pressure.
  • Fig. 1 is a plan view of a rewinding unit for treatment machine of web material according to an embodiment of the first aspect of the present invention
  • Fig. 2 is a plan view of a rewinding unit for web material treatment machine according to another alternative embodiment of the first aspect of the present invention
  • Fig. 3 is a plan view of a rewinding unit for web material treatment machine according to still another alternative embodiment of the first aspect of the present invention
  • Figs. 4 and 5 are elevational views showing the outer side of a drive-side frame wall and the inner side of a work-side frame wall, respectively, of the rewinding unit of Fig. 3
  • Y is elevational views showing the outer side of a drive-side frame wall and the inner side of a work-side frame wall, respectively, of the rewinding unit of Fig. 3
  • Y is elevational views showing the outer side of a drive-side frame wall and the inner side of a work-side frame wall, respectively, of the rewinding unit of Fig
  • FIG. 1 shows a rewinding unit according to an embodiment of the present invention, which is applicable to a web material treatment machine, such as for example a printing machine, a longitudinal cutting machine, a punching machine, etc.
  • the rewinding unit of Fig. 1 comprises a bed 1 having a side wall of drive side 1a and a side wall of operator side 1 b, mutually facing each other.
  • a guide means 3 comprising drive-side guide elements 3a fixed on said drive-side frame wall 1a and operator-side guide elements 3b fixed on said operator side bed wall 1b .
  • Drive-side and operator-side slides 8a, 8b are slidably coupled to the drive-side and operator-side guide members 3a, 3b, respectively.
  • a rewind shaft 2 having opposite ends supported rotatably in said slides of drive side and operator side 8a, 8b by means of corresponding ones bearings.
  • an electric motor group 10 having an output shaft ur directly connected to the rewind shaft 2.
  • said electric motor group 10 forms part of a shaft drive means that rotatably drives the shaft of the shaft. rewind 2 so that on the rewind shaft 2 a web material M is wound up to form a reel B.
  • the electric motor unit 10 is displaced together with the drive side slider 8a and the rewind shaft 2 along the means of guide 3 by means of drive drive.
  • Said displacement drive means comprise actuating side and operating side spindles 5a, 5b perpendicular to the rewind shaft 2, which are installed in a rotating manner in said side walls of the drive side and operator side 1a, 1b and coupled to respective drive side and operator side nuts 6a, 6b connected to the drive side and operator side runners 8a, 8b, respectively.
  • a respective drive-side and operator-side servomotors 7a, 7b are operatively connected to drive said drive side and operator side spindles 5a, 5b in rotation.
  • a pressure roller 4 is mounted on the base 1, supported at its ends so that it can rotate freely in corresponding bearings. installed in respective drive side and operator side brackets 9 a, 9 b respectively connected to the drive side and operator side bed walls 1 a, 1 b in fixed positions.
  • the displacement drive means radially displaces said rewind shaft 2 along the guide means 3, away from the pressure roller, as the diameter of said coil B grows during its formation.
  • Control means control said drive-side and drive-side servomotors 7a, 7b of the drive drive means so that they move the rewind shaft 2 at a controlled speed to maintain a pre-set winding pressure between the pressure roll 4 and the coil B that is in formation on the rewind shaft 2 as the diameter of the coil B in formation grows, in order to avoid the presence of air between the layers of the material in band M in the coil B , and thus obtain a B coil as compact as possible.
  • the rewinding unit includes a coil diameter detector (not shown), which may be of a conventional type, which supplies a signal representative of the instantaneous diameter of the coil B in formation to said control means.
  • said control means control the servomotor drive side and operator side 7a, 7b of the displacement drive means by a command obtained from at least said signal representative of the instantaneous diameter of the coil B and a parameter constant representative of the fixed position of the pressure roller 4 according to the preset rewind pressure, so that the displacement drive means moves the rewind shaft 2 at a suitable speed to accommodate the growth of the coil B in formation and at the same time maintaining said pre-established winding pressure between the coil B in formation and the pressure roll 4.
  • a rewinding unit according to another alternative embodiment of the present invention, which is in all analogous to that described above in relation to Fig. 1 except that, here, the displacement drive means displacing the rewind shaft 2 have been replaced by contrast means opposing the displacement of the rewind shaft 2 caused by the growth of the diameter of the reel 2 in formation.
  • contrast means comprise a drive-side cylinder and piston assembly 12a and an operator-side cylinder and piston assembly 12b, each of which has one end, for example a cylinder body 16a, 16b, connected to the corresponding one.
  • Said cylinder and piston assemblies of drive side and operator side 12a, 12b receive a dynamic fluid, such as air or oil under pressure, from a supply source of pressurized fluid 14 through supply conduits 14a and through respective regulators of pressure 13a, 13b.
  • a dynamic fluid such as air or oil under pressure
  • Figs. 3, 4 and 5 show still another alternative embodiment of the present invention, in which the bed 1 also comprises mutually facing drive-side and operator-sided bedplates 1a, 1b, and a rotating plate 1 1 is installed in such a way that it can be rotated about an axis of rotation E on rollers 18 (Fig. 4) supported around an opening 24 in said drive-side frame wall 1a, and is connected to a ring gear 19 (Fig. 3) which meshes with a pinion 20 driven by an electric motor 21 supported on a plate auxiliary 22 fixed to the side wall of the drive side 1a by connecting bars 23.
  • a rotating plate 1 1 is installed in such a way that it can be rotated about an axis of rotation E on rollers 18 (Fig. 4) supported around an opening 24 in said drive-side frame wall 1a, and is connected to a ring gear 19 (Fig. 3) which meshes with a pinion 20 driven by an electric motor 21 supported on a plate auxiliary 22 fixed to the side wall of the drive side 1a
  • driving-side guiding elements 3a forming part of said guiding means 3 are fixed on the rotating plate 11, and first and second mutually parallel rewinding shafts 2.1, 2.2 are rotatably supported. in cantilever in respective first and second drive side slides 8a.1, 8a.2 movably coupled to said drive side guide members 3a.
  • first drive-side slide 8a.1 could be movably coupled to first drive-side guide elements (not shown) and the second drive-side slide 8a.2 could be movably coupled to a few second elements. drive side guide (not shown) other than the first.
  • the displacement drive means comprise first and second drive side spindles 5a.1, 5a.2 installed on said rotary plate 11 and coupled to respective first and second drive side nuts 6a.1, 6a.2 connected to said first and second drive side slides 8a.1, 8a.2, respectively.
  • First and second actuating side servomotors 7a.1, 7a.2 are operatively connected to rotationally drive said first and second drive-side spindles 5a.1, 5a.2, respectively, and thereby radially displace said first and second spindles independently.
  • the shaft drive means comprise first and second electric motor groups 10.1, 10.2 having respective output shafts connected directly to the first and second rewind shafts 2.1, 2.2.
  • the aforementioned first and second electric motor groups 10.1, 10.2 are displaced together with the first and second rewind shafts 2.1, 2.2 along the drive side guiding elements 3a by the drive drive means.
  • said electric motor 21 rotates the turntable 11 to alternately locate the first and second rewind shafts 2.1, 2.2 in a rewind position, in which the web material is wound onto a coil core disposed on the corresponding first or second rewind shaft 2.1, 2.2, and in an extraction position, in which a complete coil B is extracted from the corresponding first or second rewind shaft 2.1, 2.2 and replaced by an empty coil core.
  • first and second operator side guide elements 3b.1, 3b.2 which are also part of the guide means 3.
  • a respective first and second operator side slides 8b.1, 8b.2 are movably coupled to said first and second operator side guide elements 3b.1, 3b.2, respectively, and in said first and second operator side slides 8b.1, 8b.2 are installed respective first and second clamps 15.1, 15.2.
  • first and second operator side spindles 5b.1, 5b.2 coupled to respective first and second operator side nuts 6b.1, 6b.2 connected to said first and second second operator side slides 8b.1, 8b.2, respectively.
  • First and second operator side servomotors 7b.1, 7b.2 are operatively connected to rotationally drive said first and second operator side spindles 5b.1, 5b.2, respectively to move said first and second clamps 15.1, 15.2 at length of the first and second operator side guide elements 3b.1, 3b.2.
  • the first and second clamps 15.1, 15.2 are driven by clamp actuators 25 so that they can grip distal ends of the first and second rewind shafts 2.1, 2.2 cantilevered on the rotating plate 1 1 and support and accompany the first and second rewind shafts 2.1, 2.2 in their movements in the radial direction along the guide means 3 while the coil B is formed.
  • the first and second clamps 15.1, 15.2 are opened and removed to allow extraction of a complete coil B in the extraction position and its replacement by an empty coil core.
  • the operator side bed wall 1 b has a notch 26 dimensioned to allow the removal of a complete bobbin B from the first and second rewind shafts 2.1, 2.2 when they are in the extraction position.
  • a complete coil B can be extracted from that of the first and second rewind shafts 2.1, 2.2 which is in the extraction position. , and replaced by an empty coil core, while a new coil B is in formation on the other of the first and second cores of rewinding 2.1, 2.2 which is in the rewinding position, which is progressively moved away by the displacement drive means of the pressure roller 4 as the diameter of the coil B in formation grows.
  • Figs. 4 and 5 show the first rewind shaft 2.1 disposed in the rewind position and the second rewind shaft 2.2 disposed in the extraction position.
  • this embodiment of Figs. 3, 4 and 5 comprises a coil diameter detector (not shown), which can be of a conventional type, which supplies a signal representative of the instantaneous diameter of the coil B that is in formation on that of the first and second coils.
  • Rewind trees 2.1, 2.2 which is in the rewind position.
  • Control means control the operation of those of said first and second servo motors of drive side and operator side 7a.1, 7a.2; 7b.1, 7b.2 corresponding to the first or second rewind shaft 2.1, 2.2 which is in said rewinding position by means of a setpoint obtained from at least said signal representative of the instantaneous diameter of the reel B and of a constant parameter representative of the fixed position of the pressure roller 4 according to said pre-set winding pressure.
  • the first or second rewind shaft 2.1, 2.2 which is in the rewind position is moved radially by the drive drive means at a controlled speed to accommodate the growth of the coil B in formation and at the same time maintaining said pre-established winding pressure between the coil B in formation and the pressure roller 4, in order to avoid the presence of air between the layers of the material in web M in the coil B, and thus obtain a coil B as compact as possible possible.
  • the pressure roller 4 is a freely rotating roller that simply rotates by friction with the coil B.
  • the pressure roller 4 is rotationally driven by a roller driving means in coordination with the tangential speed of the forming coil B in order to help regulate the tension of the web material upstream of the pressure roller and to obtain a desired rewinding tension.

Abstract

The invention relates to a re-spooling unit comprising: a frame (1); a re-spooling arbor (2) rotated by arbor actuation means and around which a strip material (M) is wound in order to form a spool (B), said re-spooling arbor (2) being moved radially along guiding means (3) as the diameter of the spool (B) increases; and a pressure roller (4) that presses against the spool (B) being formed on the re-spooling arbor (2). The pressure roller (4) is installed in a fixed position on the frame (1) and movement actuation means or contrast means perform or allow the radial movement of the re-spooling arbor (2) while maintaining a pre-established spooling pressure between the spool (B) being formed on the re-spooling arbor (2) and the pressure roller (4).

Description

UNIDAD REBOBINADORA PARA MÁQUINA DE TRATAMIENTO DE MATERIAL EN  REBUILDING UNIT FOR MATERIAL TREATMENT MACHINE IN
BANDA  BAND
Campo de la técnica Field of technique
La presente invención concierne en general a una unidad rebobinadora para máquina de tratamiento de material en banda, y más en particular a una unidad rebobinadora para rebobinar un material en banda continua después de que el mismo haya sido tratado, por ejemplo impreso, cortado, perforado, etc., en una máquina de tratamiento, por ejemplo una máquina impresora, una máquina de corte longitudinal, una máquina perforadora, etc. Antecedentes de la invención The present invention relates generally to a rewinding unit for web material treatment machine, and more particularly to a rewinding unit for rewinding a web material after it has been treated, for example printed, cut, punched , etc., in a treatment machine, for example a printing machine, a longitudinal cutting machine, a punching machine, etc. BACKGROUND OF THE INVENTION
Las unidades rebobinadoras comprenden generalmente un árbol de rebobinado accionado giratoriamente por unos medios de accionamiento sobre el cual se enrolla el material en banda, y un rodillo de presión que presiona contra el material en banda bobinado sobre el árbol de rebobinado. La solicitud internacional de patente WO 2012/164115 A1 da a conocer una unidad rebobinadora que comprende dos paredes de bancada enfrentadas, en una de las cuales está instalada una placa giratoria. Un par de árboles de rebobinado paralelos están soportados en voladizo, junto con sus motores de accionamiento, en dicha placa giratoria de manera que pueden ser desplazados individualmente en una dirección radial respecto a la placa giratoria a lo largo de un sistema de guías lineales por acción de unos medios de accionamiento. En la pared de bancada opuesta a la placa giratoria están instaladas un par de pinzas de soporte desplazables individualmente a lo largo de otro sistema de guías lineales por acción de otros medios de accionamiento. Estas pinzas de soporte están configuradas para agarrar, soportar y acompañar los extremos distales de los árboles de rebobinado. La placa giratoria es girada mientras las pinzas están abiertas para situar alternadamente uno de los árboles de rebobinado en una posición de rebobinado y el otro árbol de rebobinado en una posición de extracción. Un rodillo de presión está instalado de manera basculante en unos balancines accionados por uno o varios cilindros neumáticos de manera que el rodillo de presión presiona contra la bobina que está siendo formada sobre el árbol de rebobinado que se encuentra en la posición de rebobinado. The rewinding units generally comprise a rewind shaft rotatably driven by an actuation means on which the web material is wound, and a pressure roller pressing against the web material wound on the rewind shaft. The international patent application WO 2012/164115 A1 discloses a rewinding unit comprising two facing bank walls, in one of which a rotating plate is installed. A pair of parallel rewinding shafts are supported in cantilever, together with their drive motors, on said rotary plate so that they can be individually displaced in a radial direction relative to the rotating plate along a linear guide system by action. of drive means. A pair of support clamps that are individually movable along another system of linear guides by the action of other driving means are installed on the bed wall opposite the turntable. These support clamps are configured to grasp, support and accompany the distal ends of the rewinding shafts. The turntable is rotated while the grippers are open to alternately place one of the rewind trees in a rewind position and the other rewind shaft in an extraction position. A pressure roller is installed swingably on rocker arms operated by one or more pneumatic cylinders so that the pressure roller presses against the coil being formed on the rewinding shaft which is in the rewinding position.
Es sabido que en unidades rebobinadoras del tipo descrito en la citada solicitud internacional de patente WO 2012/1641 15 A1 , durante el rebobinado y a medida que el diámetro de la bobina crece, el árbol de rebobinado es desplazado gradualmente a lo largo del sistema de guías a una velocidad controlada por unos medios de control para mantener siempre una misma línea de contacto tangente ente el rodillo de presión y la bobina en formación, sin variar el ángulo de contacto, y la acción de los uno o más cilindros neumáticos asociados a los balancines es controlada por los medios de control para regular la presión que ejerce el rodillo de presión contra la bobina en formación. La velocidad de desplazamiento del árbol de rebobinado es controlada por los medios de control mediante una consigna de desplazamiento obtenida como resultante de la velocidad del material en banda, del espesor del material en banda y del diámetro instantáneo de la bobina, realimentada por una consigna de posición del rodillo de presión obtenida a partir de un sensor de posición asociado a los balancines que soportan el rodillo de presión. It is known that in rewinding units of the type described in the aforementioned international patent application WO 2012/1641 15 A1, during the rewinding and as the As the coil diameter grows, the rewinding shaft is gradually moved along the guide system at a speed controlled by a control means to always maintain the same line of tangent contact between the pressure roller and the coil in formation, without varying the contact angle, and the action of the one or more pneumatic cylinders associated with the rockers is controlled by the control means to regulate the pressure exerted by the pressure roller against the coil in formation. The speed of movement of the rewinding shaft is controlled by the control means by a displacement setpoint obtained as a result of the speed of the web material, the thickness of the web material and the instantaneous diameter of the reel, fed by a setpoint of position of the pressure roller obtained from a position sensor associated with the rockers supporting the pressure roller.
Un inconveniente de la unidad rebobinadora de la solicitud internacional de patente WO 2012/164115 A1 es que la instalación basculante del rodillo de presión resulta compleja, costosa, y además hace que la unidad de rebobinado resulte voluminosa, lo que aumenta el volumen general de la máquina de tratamiento de material en banda a la que está asociada. Por otro lado, el control del funcionamiento de la unidad rebobinadora y de la presión con la que se forma la bobina puede resultar impreciso debido a la necesidad de combinar la consigna de desplazamiento del árbol de rebobinado con la consigna de posición del rodillo de presión. A drawback of the rewinding unit of the international patent application WO 2012/164115 A1 is that the tilting installation of the pressure roller is complex, expensive, and also makes the rewinding unit bulky, which increases the overall volume of the rewinding unit. Band material treatment machine to which it is associated. On the other hand, the control of the operation of the rewinder unit and the pressure with which the coil is formed can be inaccurate due to the need to combine the displacement setpoint of the rewind shaft with the pressure setpoint of the pressure roller.
Exposición de la invención Exhibition of the invention
De acuerdo con un primer aspecto, la presente invención aporta una unidad rebobinadora aplicable a una máquina de tratamiento de material en banda, tal como por ejemplo una máquina impresora, una máquina de corte longitudinal, una máquina perforadora, etc. La unidad rebobinadora de la presente invención comprende una bancada, unos medios de guía instalados en dicha bancada, un árbol de rebobinado accionado rotativamente por unos medios de accionamiento de árbol y sobre el cual se enrolla un material en banda para formar una bobina, siendo dicho árbol de rebobinado desplazable a lo largo de dichos medios de guía a medida que el diámetro de dicha bobina crece, y un rodillo de presión instalado en la bancada de manera que presiona contra la bobina en formación sobre el árbol de rebobinado. According to a first aspect, the present invention provides a rewinding unit applicable to a band material treatment machine, such as for example a printing machine, a longitudinal cutting machine, a punching machine, etc. The rewinding unit of the present invention comprises a bedplate, a guide means installed in said bed, a rewind shaft rotatably driven by a shaft driving means and on which a web material is wound to form a reel, said rewinding shaft movable along said guide means as the diameter of said reel grows, and a pressure roller installed in the bed so that it presses against the forming spool on the rewinding shaft.
La unidad rebobinadora de la presente invención está caracterizada por que dicho rodillo de presión está instalado en una posición fija en la bancada, y unos medios de accionamiento de desplazamiento o unos medios de contraste realizan o permiten un desplazamiento radial del árbol de rebobinado al mismo tiempo que mantienen una presión de bobinado preestablecida entre la bobina en formación sobre el árbol de rebobinado y el rodillo de presión. The rewinding unit of the present invention is characterized in that said pressure roller is installed in a fixed position in the bedplate, and displacement drive means or contrast means perform or permit a radial displacement of the rewinding shaft while maintaining a pre-set winding pressure between the forming spool on the rewind shaft and the pressure roller.
El hecho de tener un rodillo de presión fijo tiene la ventaja de permitir reducir la distancia desde una unidad de tratamiento, por ejemplo unidad impresora, unidad de corte longitudinal, unidad perforadora, etc., desde la cual el material en banda es suministrado a la unidad rebobinadora, hasta el rodillo de presión en comparación con las unidades rebobinadoras del estado de la técnica provistas de un rodillo de presión movible montado en un bastidor móvil accionado por unos correspondientes medios de accionamiento, con la ventaja adicional de que la mencionada distancia desde la unidad de tratamiento hasta rodillo de presión es siempre constante. The fact of having a fixed pressure roller has the advantage of allowing to reduce the distance from a treatment unit, for example printing unit, longitudinal cutting unit, drilling unit, etc., from which the web material is supplied to the rewinder unit, up to the pressure roller compared to the rewinding units of the state of the art provided with a movable pressure roller mounted on a mobile frame driven by corresponding actuating means, with the additional advantage that said distance from the Treatment unit until pressure roller is always constant.
Además, tanto el ángulo de entrada del material en banda al rodillo de presión como la posición de la línea de contacto de este último con la bobina en formación sobre el árbol de rebobinado se mantienen constantes y no varían en ningún momento durante la formación de la bobina. El hecho de que la posición del rodillo de presión sea fija facilita la configuración de la unidad rebobinadora para poder hacer una unidad rebobinadora central-periférica, y por lo tanto permite motorizar opcionalmente el rodillo de presión para que éste contribuya a regular la tensión del material en banda en la zona de tratamiento de la máquina de tratamiento y a obtener una tensión de rebobinado deseada. In addition, both the angle of entry of the web material to the pressure roller and the position of the line of contact of the latter with the coil in formation on the rewinding shaft are kept constant and do not vary at any time during the formation of the coil. The fact that the position of the pressure roller is fixed facilitates the configuration of the rewinding unit to be able to make a central-peripheral rewinding unit, and therefore allows the pressure roller to be optionally motorized so that it contributes to regulate the tension of the material in band in the treatment zone of the treatment machine and to obtain a desired rewinding tension.
Cuando para mantener la presión de rebobinado preestablecida se usan los mencionados medios de accionamiento de desplazamiento, los cuales desplazan el árbol de rebobinado mediante uno o más servomotores, la unidad rebobinadora incluye preferiblemente un detector de diámetro de bobina que suministra una señal representativa del diámetro instantáneo de la bobina en formación, y unos medios de control que controlan el funcionamiento de dichos uno o más servomotores mediante una consigna obtenida a partir de al menos dicha señal representativa del diámetro instantáneo de la bobina y de un parámetro constante representativo de la posición fija del rodillo de presión de acuerdo con la presión de rebobinado preestablecida. Cuando para mantener la presión de rebobinado preestablecida se usan los mencionados medios de contraste, los cuales se oponen al desplazamiento del árbol de rebobinado ocasionado por el crecimiento del diámetro de la bobina mediante uno o más conjuntos de cilindro y pistón que están en comunicación con una fuente de suministro de fluido dinámico a través de al menos un regulador de presión, los medios de control de la unidad rebobinadora controlan el funcionamiento de dicho al menos un regulador de presión de acuerdo con dicha presión de bobinado preestablecida. When to maintain the preset rewinding pressure, said displacement drive means are used, which move the rewind shaft by one or more servomotors, the rewinding unit preferably includes a coil diameter detector that supplies a signal representative of the instantaneous diameter of the coil in formation, and control means controlling the operation of said one or more servomotors by means of a command obtained from at least said signal representative of the instantaneous diameter of the coil and of a constant parameter representative of the fixed position of the coil. Pressure roller according to the preset rewind pressure. When said presetting means are used to maintain the preset rewinding pressure, they oppose the displacement of the rewinding shaft caused by the growth of the diameter of the reel by means of one or more piston and cylinder assemblies that are in communication with a reel. source of dynamic fluid supply through at least one pressure regulator, control means of the rewinder unit controls the operation of said at least one pressure regulator in accordance with said pre-set winding pressure.
La unidad rebobinadora de la presente invención, tanto si utiliza los medios de accionamiento de desplazamiento que desplazan radialmente el árbol de rebobinado, como los medios de contraste que permiten el desplazamiento del árbol de rebobinado, puede ser implementada como una unidad rebobinadora de tipo torreta como la descrita en la citada solicitud internacional de patente WO 2012/164115 A1 , donde hay dos árboles de rebobinado paralelos soportados en voladizo sobre una placa giratoria que es accionada para alternar las posiciones de los árboles de rebobinado entre una posición de rebobinado y una posición de extracción. The rewinder unit of the present invention, whether using the displacement drive means radially displacing the rewind shaft, or the contrast means allowing the rewind shaft to be moved, can be implemented as a turret type rewinding unit as the one described in the aforementioned international patent application WO 2012/164115 A1, where there are two parallel rewinding shafts supported in cantilever on a rotating plate which is driven to alternate the positions of the rewinding shafts between a rewind position and a position of extraction.
En cualquiera de las realizaciones de la presente invención, el rodillo de presión puede estar accionado giratoriamente por unos correspondientes medios de accionamiento de rodillo de presión. In any of the embodiments of the present invention, the pressure roller may be rotatably driven by corresponding pressure roll driving means.
Según un segundo aspecto, la presente invención aporta un método de rebobinado de material en banda utilizando una unidad de rebobinado, la cual comprende una bancada con unos medios de guía instalados en la misma, un árbol de rebobinado accionado rotativamente por unos medios de accionamiento de árbol y sobre el cual se enrolla un material en banda para formar una bobina, siendo dicho árbol de rebobinado desplazable radialmente a lo largo de dichos medios de guía a medida que el diámetro de dicha bobina crece, y un rodillo de presión instalado en la bancada de manera que presiona contra la bobina en formación sobre el árbol de rebobinado. According to a second aspect, the present invention provides a method of rewinding web material using a rewinding unit, which comprises a bedplate with a guide means installed therein, a rewind shaft rotatably driven by a drive means of tree and on which a web material is rolled to form a reel, said rewind shaft being radially displaceable along said guide means as the diameter of said reel grows, and a pressure roller installed in the bank so that it presses against the coil in formation on the rewind shaft.
El método de la presente invención está caracterizado por los pasos de mantener dicho rodillo de presión en una posición fija en la bancada, y realizar o permitir un desplazamiento radial del árbol de rebobinado mediante unos medios de accionamiento de desplazamiento o unos medios de contraste controlados para mantener constante una presión de bobinado preestablecida entre el rodillo de presión y la bobina en formación sobre el árbol de rebobinado a medida que el diámetro de la bobina en formación crece. The method of the present invention is characterized by the steps of maintaining said pressure roller in a fixed position in the bed, and making or permitting a radial displacement of the rewind shaft by means of displacement drive means or controlled contrast means for maintaining a preset winding pressure constant between the pressure roller and the forming coil on the rewinding shaft as the diameter of the forming coil increases.
En una realización alternativa, el método comprende detectar el diámetro instantáneo de la bobina en formación sobre el árbol de rebobinado mediante un detector de diámetro de bobina, y controlar mediante unos medios de control el funcionamiento de uno o más servomotores de los medios de accionamiento de desplazamiento mediante una consigna obtenida al menos a partir de una señal representativa del diámetro instantáneo de la bobina suministrada por dicho detector de diámetro de bobina y de un parámetro constante representativo de la posición fija del rodillo de presión de acuerdo con dicha presión de rebobinado preestablecida. In an alternative embodiment, the method comprises detecting the instantaneous diameter of the coil in formation on the rewinding shaft by means of a coil diameter detector, and controlling by means of a control means the operation of one or more servomotors of the drive means of displacement by means of a command obtained at least from a signal representative of the diameter instantaneous of the coil supplied by said coil diameter detector and of a constant parameter representative of the fixed position of the pressure roller according to said pre-set rewind pressure.
El hecho de no depender de una posición variable del rodillo de presión para generar la consigna del desplazamiento del árbol de rebobinado simplifica el sistema de control y lo hace más preciso y fiable. The fact of not depending on a variable position of the pressure roller to generate the setpoint of the displacement of the rewinding shaft simplifies the control system and makes it more precise and reliable.
En otra realización, el método comprende regular mediante al menos un regulador de presión la presión de un fluido dinámico suministrado a al menos un conjunto de cilindro y pistón de los medios de contraste de acuerdo con dicha presión de rebobinado preestablecida. In another embodiment, the method comprises regulating by means of at least one pressure regulator the pressure of a dynamic fluid supplied to at least one cylinder and piston assembly of the contrast media in accordance with said preset rewind pressure.
El hecho de tener una posición fija para el rodillo de presión simplifica la regulación del control de la presión de rebobinado mediante unos medios de contraste. The fact of having a fixed position for the pressure roller simplifies the regulation of the control of the rewind pressure by means of contrast media.
Breve descripción de los dibujos BRIEF DESCRIPTION OF THE DRAWINGS
Las anteriores y otras características y ventajas resultarán más evidentes a partir de la siguiente descripción detallada de unos ejemplos de realización con referencia a los dibujos adjuntos, en los que: la Fig. 1 es una vista en planta de una unidad rebobinadora para máquina de tratamiento de material en banda de acuerdo con una realización del primer aspecto de la presente invención; la Fig. 2 es una vista en planta de una unidad rebobinadora para máquina de tratamiento de material en banda de acuerdo con otra realización alternativa del primer aspecto de la presente invención. la Fig. 3 es una vista en planta de una unidad rebobinadora para máquina de tratamiento de material en banda de acuerdo con todavía otra realización alternativa del primer aspecto de la presente invención; las Figs. 4 y 5 son vistas en alzado mostrando el lado exterior de una pared de bastidor de lado accionamiento y el lado interior de una pared de bastidor de lado operario, respectivamente, de la unidad rebobinadora de la Fig. 3; y The foregoing and other features and advantages will become more apparent from the following detailed description of some exemplary embodiments with reference to the accompanying drawings, in which: Fig. 1 is a plan view of a rewinding unit for treatment machine of web material according to an embodiment of the first aspect of the present invention; Fig. 2 is a plan view of a rewinding unit for web material treatment machine according to another alternative embodiment of the first aspect of the present invention. Fig. 3 is a plan view of a rewinding unit for web material treatment machine according to still another alternative embodiment of the first aspect of the present invention; Figs. 4 and 5 are elevational views showing the outer side of a drive-side frame wall and the inner side of a work-side frame wall, respectively, of the rewinding unit of Fig. 3; Y
Descripción detallada de unos ejemplos de realización La Fig. 1 muestra una unidad rebobinadora de acuerdo con una realización de la presente invención, la cual es aplicable a una máquina de tratamiento de material en banda, tal como por ejemplo una máquina impresora, una máquina de corte longitudinal, una máquina perforadora, etc. La unidad rebobinadora de la Fig. 1 comprende una bancada 1 que tiene una pared de bancada de lado accionamiento 1a y una pared de bancada de lado operario 1 b, mutuamente enfrentadas. En dicha bancada 1 están instalados unos medios de guía 3 que comprenden unos elementos de guía de lado accionamiento 3a fijados en dicha pared de bancada de lado accionamiento 1a y unos elementos de guía de lado operario 3b fijados en dicha pared de bancada de lado operario 1b. Unas correderas de lado accionamiento y lado operario 8a, 8b están acopladas de manera deslizante a los elementos de guía de lado accionamiento y lado operario 3a, 3b, respectivamente. Entre las paredes de bancada de lado accionamiento y lado operario 1a, 1 b está dispuesto perpendicularmente a las mismas un árbol de rebobinado 2 que tiene unos extremos opuestos soportados rotativamente en dichas correderas de lado accionamiento y lado operario 8a, 8b por medio de unos correspondientes cojinetes. Detailed description of some examples of embodiment Fig. 1 shows a rewinding unit according to an embodiment of the present invention, which is applicable to a web material treatment machine, such as for example a printing machine, a longitudinal cutting machine, a punching machine, etc. The rewinding unit of Fig. 1 comprises a bed 1 having a side wall of drive side 1a and a side wall of operator side 1 b, mutually facing each other. In said bed 1 are installed a guide means 3 comprising drive-side guide elements 3a fixed on said drive-side frame wall 1a and operator-side guide elements 3b fixed on said operator side bed wall 1b . Drive-side and operator-side slides 8a, 8b are slidably coupled to the drive-side and operator-side guide members 3a, 3b, respectively. Between the side walls of drive side and operator side 1a, 1 b is disposed perpendicularly thereto a rewind shaft 2 having opposite ends supported rotatably in said slides of drive side and operator side 8a, 8b by means of corresponding ones bearings.
Sobre la corredera de lado operario 8a está instalado un grupo motor eléctrico 10 que tiene ur árbol de salida conectado directamente al árbol de rebobinado 2. Así, dicho grupo motor eléctrico 10 forma parte de unos medios de accionamiento de árbol que accionan rotativamente el árbol de rebobinado 2 para que sobre el árbol de rebobinado 2 se enrolle un material en banda M hasta formar una bobina B. El grupo motor eléctrico 10 es desplazado junto con la corredera de lado accionamiento 8a y el árbol de rebobinado 2 a lo largo de los medios de guía 3 por unos medios de accionamiento de desplazamiento. Dichos medios de accionamiento de desplazamiento comprenden unos husillos de lado accionamiento y lado operario 5a, 5b perpendiculares al árbol de rebobinado 2, los cuales están instalados de manera rotativa en dichas paredes de bancada de lado accionamiento y lado operario 1a, 1b y acoplados a unas respectivas tuercas de lado accionamiento y lado operario 6a, 6b conectadas a las correderas de lado accionamiento y lado operario 8a, 8b, respectivamente. Unos respectivos servomotores de lado accionamiento y lado operario 7a, 7b están conectados operativamente para accionar en rotación dichos husillos de lado accionamiento y lado operario 5a, 5b. On the operator side slide 8a there is installed an electric motor group 10 having an output shaft ur directly connected to the rewind shaft 2. Thus, said electric motor group 10 forms part of a shaft drive means that rotatably drives the shaft of the shaft. rewind 2 so that on the rewind shaft 2 a web material M is wound up to form a reel B. The electric motor unit 10 is displaced together with the drive side slider 8a and the rewind shaft 2 along the means of guide 3 by means of drive drive. Said displacement drive means comprise actuating side and operating side spindles 5a, 5b perpendicular to the rewind shaft 2, which are installed in a rotating manner in said side walls of the drive side and operator side 1a, 1b and coupled to respective drive side and operator side nuts 6a, 6b connected to the drive side and operator side runners 8a, 8b, respectively. A respective drive-side and operator-side servomotors 7a, 7b are operatively connected to drive said drive side and operator side spindles 5a, 5b in rotation.
En la bancada 1 está instalado además un rodillo de presión 4 soportado por sus extremos de manera que puede girar libremente en unos correspondientes cojinetes instalados en unos respectivos soportes de lado accionamiento y lado operario 9a, 9b conectados respectivamente a las paredes de bancada de lado accionamiento y lado operario 1a, 1 b en unas posiciones fijas. Así, la posición del eje de rotación de dicho rodillo de presión 4 es fija respecto a la bancada 1. En concordancia, los medios de accionamiento de desplazamiento desplazan radialmente dicho árbol de rebobinado 2 a lo largo de los medios de guía 3, alejándolo del rodillo de presión, a medida que el diámetro de dicha bobina B crece durante su formación. Furthermore, a pressure roller 4 is mounted on the base 1, supported at its ends so that it can rotate freely in corresponding bearings. installed in respective drive side and operator side brackets 9 a, 9 b respectively connected to the drive side and operator side bed walls 1 a, 1 b in fixed positions. Thus, the position of the axis of rotation of said pressure roller 4 is fixed with respect to the bench 1. Accordingly, the displacement drive means radially displaces said rewind shaft 2 along the guide means 3, away from the pressure roller, as the diameter of said coil B grows during its formation.
Unos medios de control controlan los mencionados servomotores de lado accionamiento y lado operario 7a, 7b de los medios de accionamiento de desplazamiento de manera que éstos desplazan el árbol de rebobinado 2 a una velocidad controlada para mantener una presión de bobinado preestablecida entre el rodillo de presión 4 y la bobina B que se encuentra en formación sobre el árbol de rebobinado 2 a medida que el diámetro de la bobina B en formación crece, con el fin de evitar la presencia de aire entre las capas del material en banda M en la bobina B, y obtener así una bobina B lo más compacta posible. Control means control said drive-side and drive-side servomotors 7a, 7b of the drive drive means so that they move the rewind shaft 2 at a controlled speed to maintain a pre-set winding pressure between the pressure roll 4 and the coil B that is in formation on the rewind shaft 2 as the diameter of the coil B in formation grows, in order to avoid the presence of air between the layers of the material in band M in the coil B , and thus obtain a B coil as compact as possible.
La unidad rebobinadora incluye un detector de diámetro de bobina (no mostrado), que puede ser de un tipo convencional, el cual suministra una señal representativa del diámetro instantáneo de la bobina B en formación a dichos medios de control. A su vez, dichos medios de control controlan los servomotores de lado accionamiento y lado operario 7a, 7b de los medios de accionamiento de desplazamiento mediante una consigna obtenida a partir de al menos dicha señal representativa del diámetro instantáneo de la bobina B y de un parámetro constante representativo de la posición fija del rodillo de presión 4 de acuerdo con la presión de rebobinado preestablecida, de manera que los medios de accionamiento de desplazamiento desplazan el árbol de rebobinado 2 a una velocidad adecuada para acomodar el crecimiento de la bobina B en formación y al mismo tiempo mantener dicha presión de bobinado preestablecida entre la bobina B en formación y el rodillo de presión 4. The rewinding unit includes a coil diameter detector (not shown), which may be of a conventional type, which supplies a signal representative of the instantaneous diameter of the coil B in formation to said control means. In turn, said control means control the servomotor drive side and operator side 7a, 7b of the displacement drive means by a command obtained from at least said signal representative of the instantaneous diameter of the coil B and a parameter constant representative of the fixed position of the pressure roller 4 according to the preset rewind pressure, so that the displacement drive means moves the rewind shaft 2 at a suitable speed to accommodate the growth of the coil B in formation and at the same time maintaining said pre-established winding pressure between the coil B in formation and the pressure roll 4.
En relación ahora con la Fig. 2, en ella se muestra una unidad rebobinadora de acuerdo con otra realización alternativa de la presente invención, la cual es en todo análoga a la descrita anteriormente en relación con la Fig. 1 excepto en que, aquí, los medios de accionamiento de desplazamiento que desplazan el árbol de rebobinado 2 has sido substituidos por unos medios de contraste que se oponen al desplazamiento del árbol de rebobinado 2 causado por el crecimiento del diámetro de la bobina 2 en formación. Estos medios de contraste comprenden un conjunto de cilindro y pistón de lado accionamiento 12a y un conjunto de cilindro y pistón de lado operario 12b, cada uno de los cuales tiene un extremo, por ejemplo un cuerpo de cilindro 16a, 16b, conectado a la correspondiente de dichas paredes de bancada de lado accionamiento y lado operario 1 a, 1 b, y otro extremo, por ejemplo un vástago 17a, 17b, conectado a la correspondiente de dichas correderas de lado accionamiento y lado operario 8a, 8b. Dichos conjuntos de cilindro y pistón de lado accionamiento y lado operario 12a, 12b reciben un fluido dinámico, tal como aire o aceite a presión, desde una fuente de suministro de fluido a presión 14 por unos conductos de suministro 14a y a través de unos respectivos reguladores de presión 13a, 13b. Referring now to Fig. 2, there is shown a rewinding unit according to another alternative embodiment of the present invention, which is in all analogous to that described above in relation to Fig. 1 except that, here, the displacement drive means displacing the rewind shaft 2 have been replaced by contrast means opposing the displacement of the rewind shaft 2 caused by the growth of the diameter of the reel 2 in formation. These contrast means comprise a drive-side cylinder and piston assembly 12a and an operator-side cylinder and piston assembly 12b, each of which has one end, for example a cylinder body 16a, 16b, connected to the corresponding one. of said side walls of drive side and operator side 1 a, 1 b, and another end, for example a rod 17 a, 17 b, connected to the corresponding one of said drive side and operator side slides 8 a, 8 b. Said cylinder and piston assemblies of drive side and operator side 12a, 12b receive a dynamic fluid, such as air or oil under pressure, from a supply source of pressurized fluid 14 through supply conduits 14a and through respective regulators of pressure 13a, 13b.
El funcionamiento de dichos reguladores de presión 13a, 13b es controlado por unos medios de control de acuerdo con dicha presión de bobinado preestablecida. Así, a medida que el diámetro de la bobina 2 en formación crece el árbol de rebobinado 2 se aleja del rodillo de presión 4, lo que ocasiona un aumento de la presión del fluido dentro de los conjuntos de cilindro y pistón de lado accionamiento y lado operario 12a, 12b, y los reguladores de presión 13a, 13b reducen gradualmente la presión del fluido suministrado a los conjuntos de cilindro y pistón de lado accionamiento y lado operario 12a, 12b en una proporción adecuada para mantener constante la presión de bobinado preestablecida entre el rodillo de presión 4 y la bobina B que se encuentra en formación sobre el árbol de rebobinado 2 con el fin de evitar la presencia de aire entre las capas del material en banda M en la bobina B, y obtener así una bobina B lo más compacta posible. The operation of said pressure regulators 13a, 13b is controlled by a control means in accordance with said pre-established winding pressure. Thus, as the diameter of the coil 2 in formation grows the rewind shaft 2 moves away from the pressure roller 4, which causes an increase in the fluid pressure within the cylinder and piston assemblies of drive side and side operator 12a, 12b, and the pressure regulators 13a, 13b gradually reduce the pressure of the fluid supplied to the cylinder and piston assemblies of drive side and operator side 12a, 12b in a suitable proportion to maintain constant the preset winding pressure between the pressure roller 4 and the coil B that is in formation on the rewind shaft 2 in order to avoid the presence of air between the layers of the material in web M in the coil B, and thus obtain a coil B as compact as possible possible.
Un experto en la técnica comprenderá que un único regulador de presión sería suficiente para regular la presión de ambos conjuntos de cilindro y pistón de lado accionamiento y lado operario 12a, 12b, aunque se prefiere que la presión de fluido esté regulada por un regulador de presión específico para cada uno de los conjuntos de cilindro y pistón de lado accionamiento y lado operario 12a, 12b. One skilled in the art will understand that a single pressure regulator would be sufficient to regulate the pressure of both the drive side and operator side piston and cylinder assemblies 12a, 12b, although it is preferred that the fluid pressure be regulated by a pressure regulator. specific for each of the cylinder and piston assemblies of drive side and operator side 12a, 12b.
Las Figs. 3, 4 y 5 muestran todavía otra realización alternativa de la presente invención, en la que la bancada 1 comprende igualmente unas paredes de bancada de lado accionamiento y lado operario 1a, 1b mutuamente enfrentadas, y una placa giratoria 1 1 está instalada de manera que puede girar alrededor de un eje de giro E sobre unos rodillos 18 (Fig. 4) soportados alrededor de una abertura 24 en dicha pared de bancada de lado accionamiento 1a, y está conectada a una corona dentada 19 (Fig. 3) que engrana con un piñón 20 accionado por un motor eléctrico 21 soportado en una placa auxiliar 22 fijada a la pared de bancada de lado accionamiento 1a por unas barras de conexión 23. Figs. 3, 4 and 5 show still another alternative embodiment of the present invention, in which the bed 1 also comprises mutually facing drive-side and operator-sided bedplates 1a, 1b, and a rotating plate 1 1 is installed in such a way that it can be rotated about an axis of rotation E on rollers 18 (Fig. 4) supported around an opening 24 in said drive-side frame wall 1a, and is connected to a ring gear 19 (Fig. 3) which meshes with a pinion 20 driven by an electric motor 21 supported on a plate auxiliary 22 fixed to the side wall of the drive side 1a by connecting bars 23.
Tal como muestra mejor la Fig. 4, sobre la placa giratoria 11 están fijados unos elementos de guía de lado accionamiento 3a que forman parte de dichos medios de guía 3, y unos primer y segundo árboles de rebobinado 2.1 , 2.2 mutuamente paralelos están soportados rotativamente en voladizo en unas respectivas primera y segunda correderas de lado accionamiento 8a.1 , 8a.2 acopladas de manera móvil a dichos elementos de guía de lado accionamiento 3a. Alternativamente, la primera corredera de lado accionamiento 8a.1 podría estar acoplada de manera móvil a unos primeros elementos de guía de lado accionamiento (no mostrados) y la segunda corredera de lado accionamiento 8a.2 podría estar acoplada de manera móvil a unos segundos elementos de guía de lado accionamiento (no mostrados) distintos de los primeros. As best shown in FIG. 4, driving-side guiding elements 3a forming part of said guiding means 3 are fixed on the rotating plate 11, and first and second mutually parallel rewinding shafts 2.1, 2.2 are rotatably supported. in cantilever in respective first and second drive side slides 8a.1, 8a.2 movably coupled to said drive side guide members 3a. Alternatively, the first drive-side slide 8a.1 could be movably coupled to first drive-side guide elements (not shown) and the second drive-side slide 8a.2 could be movably coupled to a few second elements. drive side guide (not shown) other than the first.
En esta realización los medios de accionamiento de desplazamiento comprenden unos primer y segundo husillos de lado accionamiento 5a.1 , 5a.2 instalados en dicha placa giratoria 11 y acoplados a unas respectivas primera y segunda tuercas de lado accionamiento 6a.1 , 6a.2 conectadas a dichas primera y segunda correderas de lado accionamiento 8a.1 , 8a.2, respectivamente. Unos primer y segundo servomotores de lado accionamiento 7a.1 , 7a.2 están conectados operativamente para accionar rotativamente dichos primer y segundo husillos de lado accionamiento 5a.1 , 5a.2, respectivamente, y con ello desplazan radialmente de manera independiente dichos primer y segundo árboles de rebobinado 2.1 , 2.2 a lo largo de dichos elementos de guía de lado accionamiento 3a. In this embodiment the displacement drive means comprise first and second drive side spindles 5a.1, 5a.2 installed on said rotary plate 11 and coupled to respective first and second drive side nuts 6a.1, 6a.2 connected to said first and second drive side slides 8a.1, 8a.2, respectively. First and second actuating side servomotors 7a.1, 7a.2 are operatively connected to rotationally drive said first and second drive-side spindles 5a.1, 5a.2, respectively, and thereby radially displace said first and second spindles independently. second rewind shafts 2.1, 2.2 along said drive-side guide elements 3a.
Los medios de accionamiento de árbol comprenden unos primer y segundo grupos motores eléctricos 10.1 , 10.2 que tienen unos respectivos árboles de salida conectados directamente a los primer y segundo árboles de rebobinado 2.1 , 2.2. Los mencionados primer y segundo grupos motores eléctricos 10.1 , 10.2 son desplazados junto con los primer y segundo árboles de rebobinado 2.1 , 2.2 a lo largo de los elementos de guía de lado accionamiento 3a por los medios de accionamiento de desplazamiento. The shaft drive means comprise first and second electric motor groups 10.1, 10.2 having respective output shafts connected directly to the first and second rewind shafts 2.1, 2.2. The aforementioned first and second electric motor groups 10.1, 10.2 are displaced together with the first and second rewind shafts 2.1, 2.2 along the drive side guiding elements 3a by the drive drive means.
Al ser accionado, el mencionado motor eléctrico 21 hace girar la placa giratoria 11 para situar alternadamente los primer y segundo árboles de rebobinado 2.1 , 2.2 en una posición de rebobinado, en la que el material en banda es bobinado sobre un núcleo de bobina dispuesto sobre el correspondiente primer o segundo árbol de rebobinado 2.1 , 2.2, y en una posición de extracción, en la que una bobina B completa es extraída del correspondiente primer o segundo árbol de rebobinado 2.1 , 2.2 y sustituida por un núcleo de bobina vacío. When driven, said electric motor 21 rotates the turntable 11 to alternately locate the first and second rewind shafts 2.1, 2.2 in a rewind position, in which the web material is wound onto a coil core disposed on the corresponding first or second rewind shaft 2.1, 2.2, and in an extraction position, in which a complete coil B is extracted from the corresponding first or second rewind shaft 2.1, 2.2 and replaced by an empty coil core.
Tal como muestra mejor la Fig. 5, sobre la pared de bancada de lado operario 1b, opuesta a la placa giratoria 11 , están fijados unos primeros y segundos elementos de guía de lado operario 3b.1 , 3b.2 que también forman parte de los medios de guía 3. Unas respectivas primera y segunda correderas de lado operario 8b.1 , 8b.2 están acopladas de manera móvil a dichos primeros y segundos elementos de guía de lado operario 3b.1 , 3b.2, respectivamente, y en dichas primera y segunda correderas de lado operario 8b.1 , 8b.2 están instaladas unas respectivas primera y segunda pinzas 15.1 , 15.2. As better shown in FIG. 5, on the operator side wall 1b, opposite to the turntable 11, are fixed first and second operator side guide elements 3b.1, 3b.2 which are also part of the guide means 3. A respective first and second operator side slides 8b.1, 8b.2 are movably coupled to said first and second operator side guide elements 3b.1, 3b.2, respectively, and in said first and second operator side slides 8b.1, 8b.2 are installed respective first and second clamps 15.1, 15.2.
En la pared de bancada de lado operario 1b están instalados además unos primer y segundo husillos de lado operario 5b.1 , 5b.2 acoplados a unas respectivas primera y segunda tuercas de lado operario 6b.1 , 6b.2 conectadas a dichas primera y segunda correderas de lado operario 8b.1 , 8b.2, respectivamente. Unos primer y segundo servomotores de lado operario 7b.1 , 7b.2 están conectados operativamente para accionar rotativamente dichos primer y segundo husillos de lado operario 5b.1 , 5b.2, respectivamente para mover dichas primera y segunda pinzas 15.1 , 15.2 a lo largo de los primeros y segundos elementos de guía de lado operario 3b.1 , 3b.2. In the operator side bed wall 1b are also installed first and second operator side spindles 5b.1, 5b.2 coupled to respective first and second operator side nuts 6b.1, 6b.2 connected to said first and second second operator side slides 8b.1, 8b.2, respectively. First and second operator side servomotors 7b.1, 7b.2 are operatively connected to rotationally drive said first and second operator side spindles 5b.1, 5b.2, respectively to move said first and second clamps 15.1, 15.2 at length of the first and second operator side guide elements 3b.1, 3b.2.
Las primera y segunda pinzas 15.1 , 15.2 están accionadas por unos actuadores de pinza 25 de manera que pueden agarrar unos extremos distales de los primer y segundo árboles de rebobinado 2.1 , 2.2 soportados en voladizo en la placa giratoria 1 1 y soportar y acompañar a los primer y segundo árboles de rebobinado 2.1 , 2.2 en sus movimientos en la dirección radial a lo largo de los medios de guía 3 mientras la bobina B se va formando. Las primera y segunda pinzas 15.1 , 15.2 se abren y se retiran para permitir la extracción de una bobina B completa en la posición de extracción y su sustitución por un núcleo de bobina vacío. La pared de bancada de lado operario 1 b tiene una escotadura 26 dimensionada para permitir la extracción de una bobina B completa desde los primer y segundo árboles de rebobinado 2.1 , 2.2 cuando los mismos se encuentra en la posición de extracción. Así, cuando la correspondiente primera o segunda pinza 15.1 , 15.2 está abierta y retirada de la posición de extracción, una bobina B completa puede ser extraída de aquel de los primer y segundo árboles de rebobinado 2.1 , 2.2 que se encuentra en la posición de extracción, y reemplazada por un núcleo de bobina vacío, mientras una nueva bobina B se encuentra en formación sobre el otro de los primer y segundo árboles de rebobinado 2.1 , 2.2 que se encuentra en la posición de rebobinado, el cual es alejado progresivamente por los medios de accionamiento de desplazamiento del rodillo de presión 4 a medida que el diámetro de la bobina B en formación crece. The first and second clamps 15.1, 15.2 are driven by clamp actuators 25 so that they can grip distal ends of the first and second rewind shafts 2.1, 2.2 cantilevered on the rotating plate 1 1 and support and accompany the first and second rewind shafts 2.1, 2.2 in their movements in the radial direction along the guide means 3 while the coil B is formed. The first and second clamps 15.1, 15.2 are opened and removed to allow extraction of a complete coil B in the extraction position and its replacement by an empty coil core. The operator side bed wall 1 b has a notch 26 dimensioned to allow the removal of a complete bobbin B from the first and second rewind shafts 2.1, 2.2 when they are in the extraction position. Thus, when the corresponding first or second clamp 15.1, 15.2 is open and removed from the extraction position, a complete coil B can be extracted from that of the first and second rewind shafts 2.1, 2.2 which is in the extraction position. , and replaced by an empty coil core, while a new coil B is in formation on the other of the first and second cores of rewinding 2.1, 2.2 which is in the rewinding position, which is progressively moved away by the displacement drive means of the pressure roller 4 as the diameter of the coil B in formation grows.
Las Figs. 4 y 5 muestran el primer árbol de rebobinado 2.1 dispuesto en la posición de rebobinado y el segundo árbol de rebobinado 2.2 dispuesto en la posición de extracción. Figs. 4 and 5 show the first rewind shaft 2.1 disposed in the rewind position and the second rewind shaft 2.2 disposed in the extraction position.
De una manera análoga a la descrita anteriormente en relación con la realización mostrada en la Fig. 1 , esta realización de las Figs. 3, 4 y 5 comprende un detector de diámetro de bobina (no mostrado), que puede ser de un tipo convencional, el cual suministra una señal representativa del diámetro instantáneo de la bobina B que se encuentra en formación sobre aquel de los primer y segundo árboles de rebobinado 2.1 , 2.2 que se encuentra en la posición de rebobinado. Unos medios de control controlan el funcionamiento de aquellos de dichos primeros y segundos servomotores de lado accionamiento y lado operario 7a.1 ,7a.2; 7b.1 , 7b.2 correspondientes al primer o segundo árbol de rebobinado 2.1 , 2.2 que se encuentra en dicha posición de rebobinado mediante una consigna obtenida a partir de al menos dicha señal representativa del diámetro instantáneo de la bobina B y de un parámetro constante representativo de la posición fija del rodillo de presión 4 de acuerdo con dicha presión de bobinado preestablecida. In a manner analogous to that described above in relation to the embodiment shown in Fig. 1, this embodiment of Figs. 3, 4 and 5 comprises a coil diameter detector (not shown), which can be of a conventional type, which supplies a signal representative of the instantaneous diameter of the coil B that is in formation on that of the first and second coils. Rewind trees 2.1, 2.2 which is in the rewind position. Control means control the operation of those of said first and second servo motors of drive side and operator side 7a.1, 7a.2; 7b.1, 7b.2 corresponding to the first or second rewind shaft 2.1, 2.2 which is in said rewinding position by means of a setpoint obtained from at least said signal representative of the instantaneous diameter of the reel B and of a constant parameter representative of the fixed position of the pressure roller 4 according to said pre-set winding pressure.
En otras palabras, el primer o segundo árbol de rebobinado 2.1 , 2.2 que se encuentra en la posición de rebobinado es movido radialmente por los medios de accionamiento de desplazamiento a una velocidad controlada para acomodar el crecimiento de la bobina B en formación y al mismo tiempo mantener dicha presión de bobinado preestablecida entre la bobina B en formación y el rodillo de presión 4, con el fin de evitar la presencia de aire entre las capas del material en banda M en la bobina B, y obtener así una bobina B lo más compacta posible. In other words, the first or second rewind shaft 2.1, 2.2 which is in the rewind position is moved radially by the drive drive means at a controlled speed to accommodate the growth of the coil B in formation and at the same time maintaining said pre-established winding pressure between the coil B in formation and the pressure roller 4, in order to avoid the presence of air between the layers of the material in web M in the coil B, and thus obtain a coil B as compact as possible possible.
En las realizaciones ilustradas en las Figs. 1 a 5, el rodillo de presión 4 es un rodillo de libre rotación que gira simplemente por la fricción con la bobina B. Sin embargo, está contemplado que alternativamente, en cualquiera de las realizaciones de la presente invención, el rodillo de presión 4 esté accionado rotativamente por unos medios de accionamiento de rodillo en coordinación con la velocidad tangencial de la bobina B en formación con el fin de contribuir a regular la tensión del material en banda corriente arriba del rodillo de presión y a obtener una tensión de rebobinado deseada. In the embodiments illustrated in Figs. 1 to 5, the pressure roller 4 is a freely rotating roller that simply rotates by friction with the coil B. However, it is contemplated that alternatively, in any of the embodiments of the present invention, the pressure roller 4 is rotationally driven by a roller driving means in coordination with the tangential speed of the forming coil B in order to help regulate the tension of the web material upstream of the pressure roller and to obtain a desired rewinding tension.
El alcance de la presente invención está definido en las reivindicaciones adjuntas. The scope of the present invention is defined in the appended claims.

Claims

REIVINDICACIONES
1.- Unidad rebobinadora para máquina de tratamiento de material en banda, comprendiendo una bancada (1 ), unos medios de guía (3) instalados en dicha bancada (1), un árbol de rebobinado (2) accionado rotativamente por unos medios de accionamiento de árbol y sobre el cual se enrolla un material en banda (M) para formar una bobina (B), siendo dicho árbol de rebobinado (2) desplazado radialmente a lo largo de dichos medios de guía (3) a medida que el diámetro de dicha bobina (B) crece, y un rodillo de presión (4) instalado en la bancada (1 ) de manera que presiona contra la bobina (B) en formación sobre el árbol de rebobinado (2), caracterizada por que dicho rodillo de presión (4) está instalado en una posición fija en la bancada (1 ) y unos medios de accionamiento de desplazamiento o unos medios de contraste que realizan o permiten un desplazamiento radial del árbol de rebobinado (2) al mismo tiempo que mantienen una presión de bobinado preestablecida entre la bobina (B) en formación sobre el árbol de rebobinado (2) y el rodillo de presión (4). 1. Rewinder unit for band material treatment machine, comprising a bed (1), a guide means (3) installed in said bed (1), a rewind shaft (2) rotatably driven by a drive means of tree and on which a web material (M) is rolled to form a reel (B), said rewind shaft (2) being radially displaced along said guide means (3) as the diameter of said coil (B) grows, and a pressure roller (4) installed in the bed (1) so that it presses against the coil (B) in formation on the rewind shaft (2), characterized in that said pressure roller (4) is installed in a fixed position in the bed (1) and a displacement drive means or a contrast means that perform or allow a radial displacement of the rewind shaft (2) while maintaining a winding pressure preset between coil (B) and n formation on the rewind shaft (2) and the pressure roller (4).
2.- Unidad rebobinadora según la reivindicación 1 , caracterizada por que la bancada (1 ) comprende unas paredes de bancada de lado accionamiento y lado operario (1a, 1 b) enfrentadas, los medios de guía (3) comprenden unos elementos de guía de lado accionamiento y lado operario (3a, 3b) instalados en dichas paredes de bancada de lado accionamiento y lado operario (1a, 1 b), respectivamente, y el árbol de rebobinado (2) tiene unos extremos opuestos soportados rotativamente en unas respectivas correderas de lado accionamiento y lado operario (8a, 8b) acopladas de manera móvil a dichos elementos de guía de lado accionamiento y lado operario (3a, 3b), respectivamente. 2. Rewinding unit according to claim 1, characterized in that the bed (1) comprises side walls of drive side and operator side (1a, 1 b) faced, the guide means (3) comprise guide elements of drive side and operator side (3a, 3b) installed in said side walls of drive side and operator side (1a, 1b), respectively, and the rewind shaft (2) has opposite ends supported rotatably in respective slides of drive side and operator side (8a, 8b) movably coupled to said drive side and operator side guide elements (3a, 3b), respectively.
3. - Unidad rebobinadora según la reivindicación 2, caracterizada por que los medios de accionamiento de desplazamiento comprenden unos husillos de lado accionamiento y lado operario (5a, 5b) instalados en dichas paredes de bancada de lado accionamiento y lado operario (1a, 1 b) y acoplados a unas respectivas tuercas de lado accionamiento y lado operario (6a, 6b) conectadas a dichas correderas de lado accionamiento y lado operario (8a, 8b), respectivamente, y unos servomotores de lado accionamiento y lado operario (7a, 7b) conectados operativamente para accionar rotativamente dichos husillos de lado accionamiento y lado operario (5a, 5b), respectivamente. 3. - Rewinder unit according to claim 2, characterized in that the displacement drive means comprise drive side and operator side spindles (5a, 5b) installed in said side walls of drive side and operator side (1a, 1b). ) and coupled to respective nuts of drive side and operator side (6a, 6b) connected to said drive side and operator side slides (8a, 8b), respectively, and servomotor side drive and operator side (7a, 7b) operatively connected to rotationally drive said drive side and operator side screws (5a, 5b), respectively.
4. - Unidad rebobinadora según la reivindicación 3, caracterizada por que comprende un detector de diámetro de bobina que suministra una señal representativa del diámetro instantáneo de la bobina (B) en formación a unos medios de control que controlan el funcionamiento de dichos servomotores de lado accionamiento y lado operario (7a, 7b) mediante una consigna obtenida a partir de al menos dicha señal representativa del diámetro instantáneo de la bobina (B) y de un parámetro constante representativo de la posición fija del rodillo de presión (4) de acuerdo con dicha presión de bobinado preestablecida. 4. - Rewinder unit according to claim 3, characterized in that it comprises a coil diameter detector that supplies a signal representative of the instantaneous diameter of the coil (B) in formation to control means that control the operation of said servomotors side drive and operator side (7a, 7b) by a setpoint obtained from at least said signal representative of the instantaneous diameter of the coil (B) and of a constant parameter representative of the fixed position of the pressure roller (4) in accordance with said pre-established winding pressure.
5.- Unidad rebobinadora según la reivindicación 3, caracterizada por que los medios de contraste comprenden unos conjuntos de cilindro y pistón de lado accionamiento y lado operario (12a, 12b) conectados por uno de sus extremo a dichas paredes de bancada de lado accionamiento y lado operario (1a, 1b) y por el otro de sus extremos a dichas correderas de lado accionamiento y lado operario (8a, 8b), respectivamente, y al menos un regulador de presión (13a, 13b) a través del cual es suministrado un fluido dinámico a dichos conjuntos de cilindro y pistón de lado accionamiento y lado operario (12a, 12b). 5. Rewinder unit according to claim 3, characterized in that the contrast means comprise cylinder and piston assemblies of drive side and operator side (12a, 12b) connected by one of their end to said drive side bank walls and operator side (1a, 1b) and on the other side of said sliding side drive and operator side (8a, 8b), respectively, and at least one pressure regulator (13a, 13b) through which is supplied a dynamic fluid to said cylinder and piston assemblies of drive side and operator side (12a, 12b).
6.- Unidad rebobinadora según la reivindicación 5, caracterizada por que comprende unos medios de control que controlan el funcionamiento de dicho al menos un regulador de presión (13a, 13b) de acuerdo con dicha presión de bobinado preestablecida. 6. Rewinder unit according to claim 5, characterized in that it comprises control means that control the operation of said at least one pressure regulator (13a, 13b) in accordance with said pre-established winding pressure.
7.- Unidad rebobinadora según cualquiera de las reivindicaciones 1 a 6, caracterizada por que dichos medios de accionamiento de árbol comprenden un grupo motor eléctrico (10) cuyo árbol de salida está conectado directamente al árbol de rebobinado (2) y que es desplazado junto con el árbol de rebobinado (2) a lo largo de los medios de guía (3) por los medios de accionamiento de desplazamiento. 7. Rewinder unit according to any of claims 1 to 6, characterized in that said shaft drive means comprise an electric motor group (10) whose output shaft is directly connected to the rewind shaft (2) and which is moved together with the rewind shaft (2) along the guide means (3) by the displacement drive means.
8.- Unidad rebobinadora según la reivindicación 1 , caracterizada por que la bancada (1 ) comprende unas paredes de bancada de lado accionamiento y lado operario (1a, 1b) enfrentadas, y en dicha pared de bancada de lado accionamiento (1a) está instalada una placa giratoria (11 ), dichos medios de guía (3) comprenden unos elementos de guía de lado accionamiento (3a) instalados en dicha placa giratoria (11), dicho árbol de rebobinado es un primer árbol de rebobinado (2.1 ) paralelo a un segundo árbol de rebobinado (2.2) accionado en giro de manera independiente por dichos medios de accionamiento de árbol, donde dichos primer y segundo árboles de rebobinado (2.1 , 2.2) están soportados rotativamente en voladizo en unas respectivas primera y segunda correderas de lado accionamiento (8a.1 , 8a.2) acopladas de manera móvil a dichos elementos de guía de lado accionamiento 3a, y donde dichos medios de accionamiento de desplazamiento desplazan radialmente de manera independiente dichos primer y segundo árboles de rebobinado (2.1 , 2.2) a lo largo de dichos elementos de guía de lado accionamiento (3a), y unos medios de accionamiento de placa giratoria hacen girar la placa giratoria (11 ) para situar alternadamente los primer y segundo árboles de rebobinado (2.1 , 2.2) en una posición de rebobinado y en una posición de extracción. 8. Rewinder unit according to claim 1, characterized in that the bed (1) comprises facing walls of the drive side and operator side (1a, 1b) facing each other, and in said side wall of drive side (1a) is installed a rotating plate (11), said guiding means (3) comprise driving-side guiding elements (3a) installed on said rotary plate (11), said rewinding shaft is a first rewinding shaft (2.1) parallel to a second rewinding shaft (2.2) driven in rotation independently by said shaft drive means, wherein said first and second rewind shafts (2.1, 2.2) are rotatably supported cantilevered in respective first and second drive side slides ( 8a.1, 8a.2) movably coupled to said drive-side guidance elements 3a, and wherein said displacement drive means radially move independently of each other. first and second rewind shafts (2.1, 2.2) along said drive-side guide elements (3a), and rotating plate drive means rotate the turntable (11) for alternately locating the first and second rewind shafts (2.1, 2.2) in a rewind position and in an extraction position.
9. - Unidad rebobinadora según la reivindicación 8, caracterizada por que los medios de accionamiento de desplazamiento comprenden unos primer y segundo husillos de lado accionamiento (5a.1 , 5a.2) instalados en dicha placa giratoria (11 ) y acoplados a unas respectivas primera y segunda tuercas de lado accionamiento (6a.1 , 6a.2) conectadas a dichas primera y segunda correderas de lado accionamiento (8a.1 , 8a.2), respectivamente, y unos primer y segundo servomotores de lado accionamiento (7a.1 , 7a.2) conectados operativamente para accionar rotativamente dichos primer y segundo husillos de lado accionamiento (5a.1 , 5a.2), respectivamente. 9. - Rewinder unit according to claim 8, characterized in that the displacement drive means comprise first and second driving side spindles (5a.1, 5a.2) installed on said rotating plate (11) and coupled to respective ones. first and second drive side nuts (6a.1, 6a.2) connected to said first and second drive side slides (8a.1, 8a.2), respectively, and first and second drive side servomotors (7a. 1, 7a.2) operatively connected to rotationally drive said first and second driving side spindles (5a.1, 5a.2), respectively.
10. - Unidad rebobinadora según la reivindicación 9, caracterizada por que los medios de guía (3) comprenden además unos primeros y segundos elementos de guía de lado operario (3b.1 , 3b.2) instalados en dicha pared de bancada de lado operario (1 b), y unas primera y segunda pinzas (15.1 , 15.2) que agarran y sueltan unos extremos distales de los primer y segundo árboles de rebobinado (2.1 , 2.2) mediante unos medios de accionamiento de pinza están instaladas en unas respectivas primera y segunda correderas de lado operario (8b.1 , 8b.2) acopladas de manera móvil a dichos primeros y segundos elementos de guía de lado operario (3b.1 , 3b.2), respectivamente. 10. - Rewinder unit according to claim 9, characterized in that the guide means (3) further comprise first and second operator side guide elements (3b.1, 3b.2) installed in said operator-side bank wall. (1 b), and first and second clamps (15.1, 15.2) grasping and releasing distal ends of the first and second rewind shafts (2.1, 2.2) by means of gripper actuation means are installed in respective first and second ones. second operator side slides (8b.1, 8b.2) movably coupled to said first and second operator side guidance elements (3b.1, 3b.2), respectively.
11. - Unidad rebobinadora según la reivindicación 10, caracterizada por que los medios de accionamiento de desplazamiento comprenden además unos primer y segundo husillos de lado operario (5b.1 , 5b.2) instalados en dicha pared de bancada de lado operario (1 b) y acoplados a unas respectivas primera y segunda tuercas de lado operario (6b.1 , 6b.2) conectadas a dichas primera y segunda correderas de lado operario (8b.1 , 8b.2), respectivamente, y unos primer y segundo servomotores de lado operario (7b.1 , 7b.2) conectados operativamente para accionar rotativamente dichos primer y segundo husillos de lado operario (5b.1 , 5b.2), respectivamente. 11. - Rewinder unit according to claim 10, characterized in that the displacement drive means further comprise first and second operator side spindles (5b.1, 5b.2) installed in said operator side bank wall (1 b). ) and coupled to respective first and second operator side nuts (6b.1, 6b.2) connected to said first and second operator side slides (8b.1, 8b.2), respectively, and first and second servomotors operative side (7b.1, 7b.2) operatively connected to rotationally drive said first and second operator side spindles (5b.1, 5b.2), respectively.
12. - Unidad rebobinadora según la reivindicación 11 , caracterizada por que comprende un detector de diámetro de bobina que suministra una señal representativa del diámetro instantáneo de la bobina (B) en formación a unos medios de control que controlan el funcionamiento de aquellos de dichos primeros y segundos servomotores de lado accionamiento y lado operario (7a.1 ,7a.2; 7b.1, 7b.2) correspondientes al primer o segundo árbol de rebobinado (2.1 , 2.2) que se encuentra en dicha posición de rebobinado mediante una consigna obtenida a partir de al menos dicha señal representativa del diámetro instantáneo de la bobina (B) y de un parámetro constante representativo de la posición fija del rodillo de presión (4) de acuerdo con dicha presión de bobinado preestablecida. 12. - Rewinder unit according to claim 11, characterized in that it comprises a coil diameter detector that supplies a signal representative of the instantaneous diameter of the coil (B) in formation to control means that control the operation of those of said first coils. and second servomotors of drive side and operator side (7a.1, 7a.2; 7b.1, 7b.2) corresponding to the first or second rewind shaft (2.1, 2.2) that is in said rewind position by means of a password obtained from at least said signal representative of the instantaneous diameter of the coil (B) and of a constant parameter representative of the fixed position of the pressure roller (4) according to said pre-established winding pressure.
13.- Unidad rebobinadora según una cualquiera de las reivindicaciones 8 a 12, caracterizada por que dichos medios de accionamiento de árbol comprenden unos primer y segundo grupos motores eléctricos (10.1 , 10.2) cuyos árboles de salida están conectados directamente a los primer y segundo árboles de rebobinado (2.1 , 2.2) y que son desplazados junto con los primer y segundo árboles de rebobinado (2.1 , 2.2) a lo largo de los elementos de guía de lado accionamiento (3a) por los medios de accionamiento de desplazamiento. 13. Rewinder unit according to any of claims 8 to 12, characterized in that said shaft drive means comprise first and second electric motor groups (10.1, 10.2) whose output shafts are directly connected to the first and second shafts rewind (2.1, 2.2) and which are displaced together with the first and second rewind shafts (2.1, 2.2) along the drive-side guide elements (3a) by the displacement drive means.
14.- Unidad rebobinadora según una cualquiera de las reivindicaciones precedentes, caracterizada por que el rodillo de presión (4) está accionado rotativamente por unos medios de accionamiento de rodillo. 14. Rewinder unit according to any one of the preceding claims, characterized in that the pressure roller (4) is rotationally driven by a roller driving means.
15. - Método de rebobinado de material en banda utilizando una unidad de rebobinado comprendiendo una bancada (1 ) con unos medios de guía (3) instalados en la misma, un árbol de rebobinado (2) accionado rotativamente por unos medios de accionamiento de árbol y sobre el cual se enrolla un material en banda (M) para formar una bobina (B), siendo dicho árbol de rebobinado (2) desplazable radialmente a lo largo de dichos medios de guía (3) a medida que el diámetro de dicha bobina (B) crece, y un rodillo de presión (4) instalado en la bancada (1 ) de manera que presiona contra la bobina (B) en formación sobre el árbol de rebobinado (2), estando el método caracterizado por los pasos de mantener dicho rodillo de presión (4) en una posición fija en la bancada (1 ), y realizar o permitir un desplazamiento radial del árbol de rebobinado (2) mediante unos medios de accionamiento de desplazamiento o unos medios de contraste controlados para mantener una presión de bobinado preestablecida entre el rodillo de presión (4) y la bobina (B) en formación sobre el árbol de rebobinado (2) a medida que el diámetro de la bobina (B) en formación crece. 15. - Method of rewinding web material using a rewinding unit comprising a bed (1) with a guide means (3) installed therein, a rewind shaft (2) rotatably driven by means of shaft drive and on which a web material (M) is wound to form a coil (B), said rewind shaft (2) being radially movable along said guide means (3) as the diameter of said coil (B) grows, and a pressure roller (4) installed in the bed (1) so that it presses against the coil (B) in formation on the rewind shaft (2), the method being characterized by the steps of maintaining said pressure roller (4) in a fixed position in the base (1), and make or allow a radial displacement of the rewind shaft (2) by means of displacement drive means or controlled contrast means to maintain a pressure of preestab winding between the pressure roller (4) and the coil (B) in formation on the rewind shaft (2) as the diameter of the coil (B) in formation grows.
16. - Método de rebobinado según la reivindicación 15, caracterizado por que comprende detectar el diámetro instantáneo de la bobina (B) en formación sobre el árbol de rebobinado (2) mediante un detector de diámetro de bobina, y controlar mediante unos medios de control el funcionamiento de uno o más servomotores (7a, 7b) de los medios de accionamiento de desplazamiento mediante una consigna obtenida al menos a partir de una señal representativa del diámetro instantáneo de la bobina (B) suministrada por dicho detector de diámetro de bobina y de un parámetro constante representativo de la posición fija del rodillo de presión (4) de acuerdo con dicha presión de rebobinado preestablecida. 16. - Rewind method according to claim 15, characterized in that it comprises detecting the instantaneous diameter of the coil (B) in formation on the rewind shaft (2) by means of a coil diameter detector, and controlling by means of control means the operation of one or more servomotors (7a, 7b) of the displacement drive means by a command obtained at least from a signal representative of the instantaneous diameter of the coil (B) supplied by said coil diameter sensor and a constant parameter representative of the fixed position of the pressure roller (4) according to said pre-established rewind pressure.
17.- Método de rebobinado según la reivindicación 15, caracterizado por que comprende regular mediante al menos un regulador de presión (13a, 13b) la presión de un fluido dinámico suministrado a al menos un conjunto de cilindro y pistón (12a, 12b) de dichos medios de contraste de acuerdo con dicha presión de rebobinado preestablecida. 17. Rewinding method according to claim 15, characterized in that it comprises regulating by means of at least one pressure regulator (13a, 13b) the pressure of a dynamic fluid supplied to at least one cylinder and piston assembly (12a, 12b) of said contrast means in accordance with said pre-set rewind pressure.
PCT/ES2014/000020 2013-03-26 2014-02-20 Re-spooling unit for a machine used to treat strip material WO2014154918A1 (en)

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ES201330447A ES2528516B1 (en) 2013-03-26 2013-03-26 REWINDING UNIT FOR BAND MATERIAL TREATMENT MACHINE
ESP201330447.1 2013-03-26

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CN106274085B (en) * 2016-10-18 2018-09-28 爱克发感光器材（深圳）有限公司 A kind of printing equipment of included air charging system
CN110935746B (en) * 2019-11-29 2021-03-09 安徽万峰精工铝业科技有限公司 Aluminum plate coiling mechanism
WO2023119183A1 (en) * 2021-12-21 2023-06-29 G.D S.P.A. Apparatus and method for constructing a coil, preferably for an electrochemical cell intended for the production of batteries

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ES2528516B1 (en) 2015-11-03
ES2528516A1 (en) 2015-02-10
EP2979999A1 (en) 2016-02-03

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