EP0824196A1 - Electro-pneumatic control-head for actuators - Google Patents

Electro-pneumatic control-head for actuators Download PDF

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Publication number
EP0824196A1
EP0824196A1 EP97810556A EP97810556A EP0824196A1 EP 0824196 A1 EP0824196 A1 EP 0824196A1 EP 97810556 A EP97810556 A EP 97810556A EP 97810556 A EP97810556 A EP 97810556A EP 0824196 A1 EP0824196 A1 EP 0824196A1
Authority
EP
European Patent Office
Prior art keywords
support
coil
command
sensors
plate
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP97810556A
Other languages
German (de)
French (fr)
Other versions
EP0824196B1 (en
Inventor
Jean-François Roch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Parker Hannifin Manufacturing Switzerland SA
Original Assignee
Honeywell Lucifer SA
Parker Lucifer SA
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 Honeywell Lucifer SA, Parker Lucifer SA filed Critical Honeywell Lucifer SA
Publication of EP0824196A1 publication Critical patent/EP0824196A1/en
Application granted granted Critical
Publication of EP0824196B1 publication Critical patent/EP0824196B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0807—Manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0846—Electrical details
    • F15B13/0853—Electric circuit boards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0846—Electrical details
    • F15B13/0857—Electrical connecting means, e.g. plugs, sockets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0846—Electrical details
    • F15B13/0864—Signalling means, e.g. LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/202—Externally-operated valves mounted in or on the actuator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches

Definitions

  • the subject of the present invention is a control head and electro-pneumatic control of a range actuators, including a basic part, on which have mounted at least one commanding valve the compressed air supply from the pneumatic actuator, a coil actuating the valve, a support carrying the minus a position sensor to determine the position of actuator cylinder and means of connection connecting the sensors and the coil to an organ external control.
  • Such a known control head has been produced so far by the juxtaposition of at least one valve having different types of connections, position sensors and a standard control coil valve.
  • the major drawback of this head command is that, on the one hand, the connections tires are made using two different technologies, on the one hand a flaccid system and on the other a pipe connection system flexible, and that, on the other hand, the coil is connected by separate electrical cables, although it is designed to receive a standardized plug. Under one cover closing the control head are therefore found at both many free electrical cables and pressure pipes.
  • numerous electrical and pneumatic connections must be established which on the one hand requires a significant handling and secondly results in a tangle of wires. The risk of bad contact or damage to an element during assembly is therefore important.
  • the object of the present invention is to produce a head command and control overcoming these drawbacks, by reducing the number of free electrical cables under the hood and simplifying connections electric and pneumatic necessary.
  • Such a control and command head is defined by the technical characteristics of the claim independent 1.
  • the accompanying drawing shows, by way of example, a mode for making a head according to the invention.
  • Figure 1 is a front and perspective view of the entire support with the sensors, the coil, the electronic plate, the connection means and the LED diodes.
  • FIG. 2 is a front view of the sensor assembly, coil, electronics, connection means and diodes LED.
  • Figure 3 is a top view of the assembly sensors, coil, electronics, connection means and LED diodes.
  • Figure 4 is an overall perspective view of a head fitted and mounted according to the invention.
  • FIG. 5 is a top view of an equipped head and mounted according to the invention.
  • Figure 6 is a top view of a plate electronics according to the invention.
  • Figure 1 shows an integrated support 1, a coil 12 for controlling the valve plugged into the support, Hall effect position sensors 4 and 6, means for connection 9 and a chute 7.
  • the support 1 comprises more particularly three different parts: one first part 2 on which the sensors are fixed position 4 and 6, a second part 8 comprising a cavity into which a plate fits electronics 20 and connection means 9, and a third part 11 which contains a standardized sheet in which the coil 12 comes to fit directly.
  • the first part 2 of the support 1 has two vertical slides 3 and 5 in which both position sensors 4 and 6 can slide from so that their height position is adjustable.
  • This height is adjusted by adjustment means located inside the slides, for example two screws running through two corresponding threaded surfaces in sensors 4, 6 and tightening or loosening these screws allows to precisely adjust the respective height of the sensors 4 and 6.
  • adjustment means located inside the slides for example two screws running through two corresponding threaded surfaces in sensors 4, 6 and tightening or loosening these screws allows to precisely adjust the respective height of the sensors 4 and 6.
  • one of the sensors is placed in the high position and the other in the low position of so as to be able to detect the high and low positions actuator cylinder (not shown) in Figure 1).
  • a chute 7 in which the electrical wires from the external control unit and position sensors 4 and 6 are passed during their connection to the electronics. These only hang around therefore not in the head and are not likely to be damaged when closing the head by means a cover, for example.
  • the second part 8 of the support 1 has a cavity intended to receive an electronic plate 20 of command and control.
  • This electronic plate 20 allows new functions that did not exist on known command and control heads until then. First, it plays the role of a interface between the external control unit and the head of command and control, and the connection means 9 are mounted directly on it in order to simplify electrical connections and remove Electric wires.
  • the plate 20 then allows on the one hand to order via coil 12 opening or closing the air supply to the command head based on commands sent by the external control body and secondly to manage the information coming from the sensors 4, 6 concerning the position of the actuator cylinder and transmit it to the external control unit.
  • the plate 20 includes a circuit transforming the values from position sensors 4 and 6 in order to adapt them to a PNP or NPN type command from the control unit external.
  • a PNP command the voltage delivered by the sensor is compared to the voltage of reference which is the positive voltage while in an NPN command, the delivered voltage is compared to system neutral.
  • the four outputs of this circuit are all connected to connection means 9 of so that when connecting the control unit external to these, the appropriate outputs can be chosen.
  • LED diodes 10 are mounted and connected directly on plate 20. These diodes allow to indicate visually the state of the head, find out if the actuator cylinder is in the high position or in the low position, for example.
  • the electronic plate 20 also includes electrical contacts 21, 22, 23 in the form of a lyre on the opposite side to that of the connection means 9 and LED 10. These contacts 21, 22, 23 are intended to connect directly, when the plate fits electronics 20 in its housing of the second part 8 of the support 1, the standardized plug of the coil 12 which is fitted in the third part 11 of the support 1 thus avoiding the use of electrical wires additional. These electrical contacts 21, 22 and 23 are shown in more detail in Figure 6.
  • the third part 11 of the support 1 comprises a sheet normalized female without electrical contacts in which the corresponding plug of coil 12 comes fit together.
  • the support 1 is shown seen from the front. We find the first part 2, the second position sensor 6, the chute 7 located between the first part 2 and the second part 8 of the support 1 through which the wires connected to the connection means 9, the LEDs 10 and the third pass. part 11 of support 1.
  • the arrangement of the diodes makes it possible to indicate different states of the system.
  • Figure 3 which shows a top view of the support 1, the location of the position sensors 4 and 6 is shown. They are symmetrically placed in the first part 2 of support 1, in vertical slides 3, 5 and they slide along adjustment means 13, 14, such as for example screws, so that their height can be adjusted.
  • the first one part 2 is also slightly curved.
  • connection means 9 LED diodes 10 and the coil 12 connected in the third part 11 of the support.
  • FIG 4 shows a control and mounted and equipped control but without cover protection.
  • This also includes a piece of cylindrical base 15 of standard form which is intended to be fixed on the actuator.
  • On this base piece 15 are mounted the elements described above and shown in Figures 1 to 3.
  • the different elements retaining the same numbering as in the figures previous, so there is support 1 and its different parts 2, 8 and 11, the chute 7 protecting the connected wires, the connection means 9, the LEDs 10 which are found behind a cover 19 pierced with corresponding holes in the base 15, and the coil 12.
  • the cage 17 surrounding the actuator cylinder is also shown in this figure as well as the valve 16 commanding the air supply from the actuator. The opening and closing of this valve 16 are controlled by the coil 12 which acts on the actuator of valve 16.
  • On the front of base piece 15 is the inlet and the pressurized air outlet 18.
  • Valve 16 is a valve of the integrated exhaust type in which the discharge of pressurized air is not by a hose connected to the valve but by a channel pierced directly in the valve body. A corresponding hole is then provided on the piece of base 15, so that when valve 16 is mounted in base part 15, the exhaust to the outside of the valve is free.
  • the actuator cylinder has two positions, one position high and low position, which are detected by sensors 4 and 6 respectively, and depending of its travel, the height of the sensors can be adjusted by the adjusting means.
  • the third part 11 of the integrated support 1 is the third part 11 of the integrated support 1 in which the standardized plug of the coil 12 comes s 'follow suit.
  • the coil 12 is shown plugged in and below it is the valve 16 for controlling the supply of pressurized air for the actuator. The whole then forms a compact unit which can easily be put in place and changed.
  • FIG 6 an example of an electronic plate used in the invention is shown with two position sensors not connected.
  • the plaque electronics 20 includes connection means 9, LED diodes 10 and the three contacts 21, 22 and 23 in form of lyres. These contacts 21, 22, 23 are intended for come into contact with the standardized coil plug 12 when the electronic plate is placed in its housing of the second part 8 of the support 1.
  • the position sensors 4 and 6 are also shown in this figure with their sons 24, 25.
  • the integrated support 1 and the base part 15 are made of synthetic material.
  • a third position sensor intermediate could be used.
  • a single sensor analog continuously detecting the position of the cylinder on its entire stroke can be used.
  • connection means can be constituted by a terminal block, connector or by any other means equivalent.
  • the shape of the cavity is not necessarily rectangular and it can also include an extension for receive the diodes.
  • the electronic plate Once the electronic plate is put in place, it can be embedded in silicone or another encapsulation material to protect its components when cleaning and disinfecting the head.

Abstract

The electro-pneumatic control head comprises a base piece (15), a valve (16) and a coil (12) actuating the valve. A support (1) carries at least one position sensor (4), whilst a connection element (9) joins the sensors and the coil to an external control module. The head further comprises an electronic circuit board (20) carrying the connection element, and forming an interface between the external control and the sensors and coil. The support is integrated in a single piece, which comprises a first part (2) supporting the sensors, a second part (8) receiving the electronic circuit board, and a third part in which the coil is connected. The circuit board lies directly in contact with the terminals of the coil, whilst being embedded in the second part of the support.

Description

La présente invention a pour objet une tête de commande et de contrôle électro-pneumatique d'une gamme d'actuateurs, comprenant une pièce de base, sur laquelle sont montés au moins une valve commandant l'arrivée d'air comprimé de l'actuateur pneumatique, une bobine actionnant la valve, un support portant au moins un capteur de position pour déterminer la position du vérin de l'actuateur et des moyens de connexion reliant les capteurs et la bobine à un organe de commande externe.The subject of the present invention is a control head and electro-pneumatic control of a range actuators, including a basic part, on which have mounted at least one commanding valve the compressed air supply from the pneumatic actuator, a coil actuating the valve, a support carrying the minus a position sensor to determine the position of actuator cylinder and means of connection connecting the sensors and the coil to an organ external control.

Une telle tête de commande, connue, a été réalisée jusqu'ici par la juxtaposition d'au moins une valve ayant des branchements de types différents, des capteurs de position et une bobine standard de commande de la valve. L'inconvénient majeur de cette tête de commande est que, d'une part, les raccordements pneumatiques sont réalisés au moyen de deux technologies différentes, d'un côté un système flasqué et de l'autre un système de raccordement à tuyaux souples, et que, d'autre part, la bobine est connectée par des câbles électriques séparés, bien qu'elle soit conçue pour recevoir une fiche normalisée. Sous un même capot fermant la tête de commande se retrouvent donc à la fois de nombreux câbles électriques libres et des tuyaux sous pression. Ainsi, lors du montage, de nombreuses connexions électriques et pneumatiques doivent être établies ce qui d'une part nécessite une manutention importante et d'autre part résulte dans un enchevêtrement de fils. Le risque d'un mauvais contact ou d'un endommagement d'un élément au cours du montage est par conséquent important. Such a known control head has been produced so far by the juxtaposition of at least one valve having different types of connections, position sensors and a standard control coil valve. The major drawback of this head command is that, on the one hand, the connections tires are made using two different technologies, on the one hand a flaccid system and on the other a pipe connection system flexible, and that, on the other hand, the coil is connected by separate electrical cables, although it is designed to receive a standardized plug. Under one cover closing the control head are therefore found at both many free electrical cables and pressure pipes. Thus, during assembly, numerous electrical and pneumatic connections must be established which on the one hand requires a significant handling and secondly results in a tangle of wires. The risk of bad contact or damage to an element during assembly is therefore important.

La présente invention a pour but de réaliser une tête de commande et de contrôle palliant ces inconvénients, en diminuant le nombre de câbles électriques libres sous le capot et en simplifiant les raccordements électriques et pneumatiques nécessaires.The object of the present invention is to produce a head command and control overcoming these drawbacks, by reducing the number of free electrical cables under the hood and simplifying connections electric and pneumatic necessary.

Une telle tête de contrôle et de commande est définie par les caractéristiques techniques de la revendication indépendante 1.Such a control and command head is defined by the technical characteristics of the claim independent 1.

Les revendication dépendantes 2 à 6 définissent des modes de réalisation particuliers de l'invention.Dependent claims 2 to 6 define particular embodiments of the invention.

Le dessin annexé représente, à titre d'exemple, un mode de réalisation d'une tête selon l'invention.The accompanying drawing shows, by way of example, a mode for making a head according to the invention.

La figure 1 est une vue de face et en perspective de l'ensemble du support avec les capteurs, la bobine, la plaque électronique, les moyens de connexion et les diodes LED.Figure 1 is a front and perspective view of the entire support with the sensors, the coil, the electronic plate, the connection means and the LED diodes.

La figure 2 est une vue de face de l'ensemble capteurs, bobine, électronique, moyens de connexion et diodes LED.FIG. 2 is a front view of the sensor assembly, coil, electronics, connection means and diodes LED.

La figure 3 est une vue de dessus de l'ensemble capteurs, bobine, électronique, moyens de connexion et diodes LED.Figure 3 is a top view of the assembly sensors, coil, electronics, connection means and LED diodes.

La figure 4 est une vue d'ensemble en perspective d'une tête équipée et montée selon l'invention. Figure 4 is an overall perspective view of a head fitted and mounted according to the invention.

La figure 5 est une vue de dessus d'une tête équipée et montée selon l'invention.FIG. 5 is a top view of an equipped head and mounted according to the invention.

La figure 6 est une vue de dessus d'une plaque électronique selon l'invention.Figure 6 is a top view of a plate electronics according to the invention.

L'invention est maintenant décrite en référence aux figures 1 à 6.The invention is now described with reference to Figures 1 to 6.

La figure 1 montre un support intégré 1, une bobine 12 de commande de la valve enfichée dans le support, des capteurs de position 4 et 6 à effet Hall, des moyens de connexion 9 et une goulotte 7. Le support 1 comprend plus particulièrement trois parties différentes: une première partie 2 sur laquelle sont fixés les capteurs de position 4 et 6, une deuxième partie 8 comportant une cavité dans laquelle s'emboíte une plaque électronique 20 et les moyens de connexion 9, et une troisième partie 11 qui contient une fiche normalisée dans laquelle la bobine 12 vient s'emboíter directement.Figure 1 shows an integrated support 1, a coil 12 for controlling the valve plugged into the support, Hall effect position sensors 4 and 6, means for connection 9 and a chute 7. The support 1 comprises more particularly three different parts: one first part 2 on which the sensors are fixed position 4 and 6, a second part 8 comprising a cavity into which a plate fits electronics 20 and connection means 9, and a third part 11 which contains a standardized sheet in which the coil 12 comes to fit directly.

La première partie 2 du support 1 comporte deux glissières verticales 3 et 5 dans lesquelles les deux capteurs de position 4 et 6 peuvent coulisser de manière à ce que leur position en hauteur soit réglable. Le réglage de cette hauteur s'effectue par des moyens de réglage situés à l'intérieur des glissières, par exemple deux vis qui traversent deux portées filetées correspondantes dans les capteurs 4, 6 et le serrage ou le desserrage de ces vis permet d'ajuster précisément la hauteur respective des capteurs 4 et 6. En général, l'un des capteurs est placé en position haute et l'autre en position basse de manière à pouvoir détecter les positions haute et basse correspondantes du vérin de l'actuateur (non représenté à la figure 1).The first part 2 of the support 1 has two vertical slides 3 and 5 in which both position sensors 4 and 6 can slide from so that their height position is adjustable. This height is adjusted by adjustment means located inside the slides, for example two screws running through two corresponding threaded surfaces in sensors 4, 6 and tightening or loosening these screws allows to precisely adjust the respective height of the sensors 4 and 6. In general, one of the sensors is placed in the high position and the other in the low position of so as to be able to detect the high and low positions actuator cylinder (not shown) in Figure 1).

Entre la première partie 2 et la deuxième partie 8 du support 1 se trouve une goulotte 7 dans laquelle les fils électriques venant de l'organe de commande externe et des capteurs de position 4 et 6 sont passés lors de leur raccordement à l'électronique. Ceux-ci ne traínent donc pas dans la tête et ne risquent pas d'être endommagés lors de la fermeture de la tête au moyen d'un capot, par exemple.Between the first part 2 and the second part 8 of the support 1 is a chute 7 in which the electrical wires from the external control unit and position sensors 4 and 6 are passed during their connection to the electronics. These only hang around therefore not in the head and are not likely to be damaged when closing the head by means a cover, for example.

La deuxième partie 8 du support 1 comporte une cavité destinée à recevoir une plaque électronique 20 de commande et de contrôle. Cette plaque électronique 20 permet de nouvelles fonctions qui n'existaient pas sur les têtes de commande et de contrôle connues jusqu'alors. Elle joue tout d'abord le rôle d'une interface entre l'organe de commande externe et la tête de commande et de contrôle, et les moyens de connexion 9 sont montés directement sur celle-ci afin de simplifier les connections électriques et supprimer les fils électriques. La plaque 20 permet alors d'une part de commander par l'intermédiaire de la bobine 12 l'ouverture ou la fermeture de l'arrivée d'air dans la tête de commande en fonction des commandes envoyées par l'organe de commande externe et d'autre part de gérer l'information venant des capteurs 4, 6 concernant la position du vérin de l'actuateur et de la transmettre à l'organe de commande externe. En particulier, la plaque 20 comporte un circuit transformant les valeurs issues des capteurs de position 4 et 6 afin de les adapter à une commande de type PNP ou NPN de l'organe de commande externe. Dans le cas d'une commande PNP, la tension délivrée par le capteur est comparée à la tension de référence qui est la tension positive tandis que dans une commande NPN, la tension délivrée est comparée au neutre du système. Les quatre sorties de ce circuit (position haute et position basse pour une commande PNP, position haute et position basse pour une commande NPN) sont toutes reliées aux moyens de connexion 9 de sorte que lors du branchement de l'organe de commande externe à ceux-ci, les sorties appropriées peuvent être choisies.The second part 8 of the support 1 has a cavity intended to receive an electronic plate 20 of command and control. This electronic plate 20 allows new functions that did not exist on known command and control heads until then. First, it plays the role of a interface between the external control unit and the head of command and control, and the connection means 9 are mounted directly on it in order to simplify electrical connections and remove Electric wires. The plate 20 then allows on the one hand to order via coil 12 opening or closing the air supply to the command head based on commands sent by the external control body and secondly to manage the information coming from the sensors 4, 6 concerning the position of the actuator cylinder and transmit it to the external control unit. In particular, the plate 20 includes a circuit transforming the values from position sensors 4 and 6 in order to adapt them to a PNP or NPN type command from the control unit external. In the case of a PNP command, the voltage delivered by the sensor is compared to the voltage of reference which is the positive voltage while in an NPN command, the delivered voltage is compared to system neutral. The four outputs of this circuit (high position and low position for an order PNP, high position and low position for an order NPN) are all connected to connection means 9 of so that when connecting the control unit external to these, the appropriate outputs can be chosen.

De plus, des diodes LED 10 sont montées et branchées directement sur la plaque 20. Ces diodes permettent d'indiquer de manière visuelle l'état de la tête, à savoir si le vérin de l'actuateur est en position haute ou en position basse, par exemple.In addition, LED diodes 10 are mounted and connected directly on plate 20. These diodes allow to indicate visually the state of the head, find out if the actuator cylinder is in the high position or in the low position, for example.

La plaque électronique 20 comporte également des contacts électriques 21, 22, 23 en forme de lyre sur la face opposée à celle des moyens de connexion 9 et des LED 10. Ces contacts 21, 22, 23 sont destinés à relier directement, lors de l'emboítement de la plaque électronique 20 dans son logement de la deuxième partie 8 du support 1, la fiche normalisée de la bobine 12 qui est emboítée dans la troisième partie 11 du support 1 en évitant ainsi l'emploi de fils électriques supplémentaires. Ces contacts électriques 21, 22 et 23 sont représentés plus en détail à la figure 6.The electronic plate 20 also includes electrical contacts 21, 22, 23 in the form of a lyre on the opposite side to that of the connection means 9 and LED 10. These contacts 21, 22, 23 are intended to connect directly, when the plate fits electronics 20 in its housing of the second part 8 of the support 1, the standardized plug of the coil 12 which is fitted in the third part 11 of the support 1 thus avoiding the use of electrical wires additional. These electrical contacts 21, 22 and 23 are shown in more detail in Figure 6.

La troisième partie 11 du support 1 comporte une fiche normalisée femelle sans contacts électriques dans laquelle la fiche correspondante de la bobine 12 vient s'emboíter. The third part 11 of the support 1 comprises a sheet normalized female without electrical contacts in which the corresponding plug of coil 12 comes fit together.

A la figure 2, le support 1 est représenté vu de face. On retrouve la première partie 2, le deuxième capteur de position 6, la goulotte 7 située entre la première partie 2 et la deuxième partie 8 du support 1 dans laquelle passent les fils branchés aux moyens de connexion 9, les diodes LED 10 et la troisième partie 11 du support 1.
L'arrangement des diodes permet d'indiquer différents états du système.In Figure 2, the support 1 is shown seen from the front. We find the first part 2, the second position sensor 6, the chute 7 located between the first part 2 and the second part 8 of the support 1 through which the wires connected to the connection means 9, the LEDs 10 and the third pass. part 11 of support 1.
The arrangement of the diodes makes it possible to indicate different states of the system.

A la figure 3, qui présente une vue de dessus du support 1, l'emplacement des capteurs de position 4 et 6 est représenté. Ils se trouvent symétriquement placés dans la première partie 2 du support 1, dans des glissières verticales 3, 5 et ils coulissent le long de moyens de réglage 13, 14, tels que par exemple des vis, afin que leur hauteur puisse être ajustée. La première partie 2 est en plus légèrement incurvée. On retrouve ensuite les deuxième et troisième parties 8 et 11 du support, les moyens de connexion 9, les diodes LED 10 et la bobine 12 branchée dans la troisième partie 11 du support.In Figure 3, which shows a top view of the support 1, the location of the position sensors 4 and 6 is shown. They are symmetrically placed in the first part 2 of support 1, in vertical slides 3, 5 and they slide along adjustment means 13, 14, such as for example screws, so that their height can be adjusted. The first one part 2 is also slightly curved. We find then the second and third parts 8 and 11 of support, connection means 9, LED diodes 10 and the coil 12 connected in the third part 11 of the support.

La figure 4 représente une tête de commande et de contrôle montée et équipée mais sans capot de protection. Celle-ci comporte en outre une pièce de base 15 cylindrique de forme standard qui est destinée à se fixer sur l'actuateur. Sur cette pièce de base 15 sont montés les éléments décrits ci-dessus et représentés aux figures 1 à 3. Les différents éléments conservant la même numérotation que dans les figures précédentes, on y retrouve donc le support 1 et ses différentes parties 2, 8 et 11, la goulotte 7 protégeant les fils branchés, les moyens de connexion 9, les diodes LED 10 qui se retrouvent derrière un cache 19 percé de trous correspondant de la pièce de base 15, et la bobine 12. En plus, la cage 17 entourant le vérin de l'actuateur est également représentée dans cette figure de même que la valve 16 commandant l'arrivée d'air de l'actuateur. L'ouverture et la fermeture de cette valve 16 sont commandées par la bobine 12 qui agit sur l'actionneur de la valve 16. Sur l'avant de la pièce de base 15 se trouvent l'arrivée et la sortie d'air sous pression 18.Figure 4 shows a control and mounted and equipped control but without cover protection. This also includes a piece of cylindrical base 15 of standard form which is intended to be fixed on the actuator. On this base piece 15 are mounted the elements described above and shown in Figures 1 to 3. The different elements retaining the same numbering as in the figures previous, so there is support 1 and its different parts 2, 8 and 11, the chute 7 protecting the connected wires, the connection means 9, the LEDs 10 which are found behind a cover 19 pierced with corresponding holes in the base 15, and the coil 12. In addition, the cage 17 surrounding the actuator cylinder is also shown in this figure as well as the valve 16 commanding the air supply from the actuator. The opening and closing of this valve 16 are controlled by the coil 12 which acts on the actuator of valve 16. On the front of base piece 15 is the inlet and the pressurized air outlet 18.

La valve 16 est une valve du type à échappement intégré dans laquelle l'évacuation de l'air sous pression se fait non pas par un tuyau branché sur la valve mais par un canal percé directement dans le corps de la valve. Un trou correspondant est alors prévu sur la pièce de base 15, de sorte que lorsque la valve 16 est montée dans la pièce de base 15, l'échappement vers l'extérieur de la valve est libre.Valve 16 is a valve of the integrated exhaust type in which the discharge of pressurized air is not by a hose connected to the valve but by a channel pierced directly in the valve body. A corresponding hole is then provided on the piece of base 15, so that when valve 16 is mounted in base part 15, the exhaust to the outside of the valve is free.

Le vérin de l'actuateur a deux positions, une position haute et une position basse, qui sont détectées respectivement par les capteurs 4 et 6, et en fonction de la course de celui-ci, la hauteur des capteurs peut être réglée par les moyens de réglage.The actuator cylinder has two positions, one position high and low position, which are detected by sensors 4 and 6 respectively, and depending of its travel, the height of the sensors can be adjusted by the adjusting means.

La même tête équipée est représentée à la figure 5 mais cette fois vue du dessus. Cette vue permet en particulier de mieux montrer l'agencement des différentes parties du support et en particulier des capteurs de position 5 et 6 par rapport à la cage 17 du vérin de l'actuateur. Ceux-ci sont placés de chaque côté de la première partie 2 du support 1, cette partie 2 étant légèrement incurvée de manière à suivre la forme cylindrique du vérin 17. Dans le sens contraire des aiguilles d'une montre, on trouve ensuite la goulotte 7 par laquelle passent les fils électriques reliant le régulateur extérieur (non représenté) aux moyens de connexion 9 et les fils des capteurs 4, 6 venant se brancher sur la plaque électronique 20. Ensuite se trouve la deuxième partie 8 du support 1 dans laquelle vient s'emboíter la plaque électronique 20 et sur laquelle sont fixés les moyens de connexion 9 et les diodes LED 10. Suivant cette deuxième partie 8, se trouve la troisième partie 11 du support intégré 1 dans laquelle la fiche normalisée de la bobine 12 vient s'emboíter. La bobine 12 est représentée enfichée et en dessous de celle-ci se trouve la valve 16 de commande d'arrivée d'air sous pression pour l'actuateur.
Le tout forme alors un ensemble compact qui peut facilement être mis en place et changé.The same equipped head is shown in Figure 5 but this time seen from above. This view makes it possible in particular to better show the arrangement of the different parts of the support and in particular of the position sensors 5 and 6 relative to the cage 17 of the actuator cylinder. These are placed on each side of the first part 2 of the support 1, this part 2 being slightly curved so as to follow the cylindrical shape of the jack 17. In the anticlockwise direction, there is then the chute 7 through which pass the electrical wires connecting the external regulator (not shown) to the connection means 9 and the wires of the sensors 4, 6 which are connected to the electronic plate 20. Next is the second part 8 of the support 1 in which comes fit the electronic plate 20 and on which are fixed the connection means 9 and the LED diodes 10. According to this second part 8, is the third part 11 of the integrated support 1 in which the standardized plug of the coil 12 comes s 'follow suit. The coil 12 is shown plugged in and below it is the valve 16 for controlling the supply of pressurized air for the actuator.
The whole then forms a compact unit which can easily be put in place and changed.

A la figure 6, un exemple de plaque électronique utilisée dans l'invention est représenté avec deux capteurs de position non branchés. La plaque électronique 20 comporte les moyens de connexion 9, les diodes LED 10 et les trois contacts 21, 22 et 23 en forme de lyres. Ces contacts 21, 22, 23 sont destinés à venir en contact avec la fiche normalisée de la bobine 12 lorsque la plaque électronique est placée dans son logement de la deuxième partie 8 du support 1. Les capteurs de position 4 et 6 sont également représentés sur cette figure avec leurs fils 24, 25.In Figure 6, an example of an electronic plate used in the invention is shown with two position sensors not connected. The plaque electronics 20 includes connection means 9, LED diodes 10 and the three contacts 21, 22 and 23 in form of lyres. These contacts 21, 22, 23 are intended for come into contact with the standardized coil plug 12 when the electronic plate is placed in its housing of the second part 8 of the support 1. The position sensors 4 and 6 are also shown in this figure with their sons 24, 25.

Typiquement, le support intégré 1 et la pièce de base 15 sont fabriqués en matière synthétique. Typically, the integrated support 1 and the base part 15 are made of synthetic material.

Le mode d'exécution décrit est donné à titre d'exemple et des variations sont possible dans le cadre de la protection revendiquée.The described execution mode is given by way of example and variations are possible as part of the protection claimed.

Par exemple, un troisième capteur de position intermédiaire pourrait être utilisé. Ou bien, à la place de deux capteurs de position, un unique capteur analogique détectant la position du vérin en continu sur toute sa course peut être utilisé.For example, a third position sensor intermediate could be used. Or, at the instead of two position sensors, a single sensor analog continuously detecting the position of the cylinder on its entire stroke can be used.

Les moyens de connexion peuvent être constitués par un bornier, un connecteur ou par tout autre moyen équivalent.The connection means can be constituted by a terminal block, connector or by any other means equivalent.

La forme de la cavité n'est pas forcément rectangulaire et elle peut aussi comporter une extension pour recevoir les diodes.The shape of the cavity is not necessarily rectangular and it can also include an extension for receive the diodes.

Une fois que la plaque électronique est mise en place, elle peut être noyée dans du silicone ou dans une autre matière d'encapsulation afin de protéger ses composants lors du nettoyage et de la désinfection de la tête.Once the electronic plate is put in place, it can be embedded in silicone or another encapsulation material to protect its components when cleaning and disinfecting the head.

Claims (7)

Tête de commande et de contrôle d'actuateurs pneumatiques comportant une pièce de base (15), sur laquelle sont montés au moins une valve (16) commandant l'arrivée d'air comprimé de l'actuateur pneumatique, une bobine (12) actionnant la valve (16), un support (1) portant au moins un capteur de position (4,6) pour déterminer la position du vérin de l'actuateur , et des moyens de connexion (9) permettant de relier les capteurs (4, 6) et la bobine (12) à un organe de commande externe, caractérisée en ce que la valve (16) est une valve à échappement intégré, et en ce que ladite tête comporte en outre une plaque électronique (20) de contrôle et de commande sur laquelle les moyens de connexion (9) sont directement fixés, la plaque (20) constituant une interface entre l'organe de commande externe, le ou les capteurs de position (4,6) et la bobine (12) et comprenant au moins trois contacts de surface (21,22,23), et en ce que ledit support (1) est un support intégré en une seule pièce comprenant une première partie (2) supportant le ou les capteurs de position (4, 6), une deuxième partie (8) destinée à recevoir en emboítement la plaque électronique (20), et une troisième partie (11) comportant une fiche normalisée dans laquelle la bobine (12) vient se brancher, les contacts (21,22,23) de la plaque (20) entrant directement en contact avec la fiche normalisée de la bobine (12) lorsque la plaque électronique (20) est emboítée dans la deuxième partie (8) du support (1).Actuator command and control head tires comprising a base part (15), on which are mounted at least one valve (16) controlling the compressed air supply from the pneumatic actuator, a coil (12) actuating the valve (16), a support (1) carrying at least one position sensor (4,6) for determine the position of the actuator cylinder, and connection means (9) for connecting the sensors (4, 6) and the coil (12) to a external control, characterized in that the valve (16) is an integrated exhaust valve, and in that said head further comprises an electronic plate (20) control and command on which the means connection (9) are directly fixed, the plate (20) constituting an interface between the control member position sensor (s) (4,6) and the coil (12) and comprising at least three contact surface (21,22,23), and in that said support (1) is an integrated support in one piece including a first part (2) supporting the sensor (s) position (4, 6), a second part (8) intended for receive in interlocking the electronic plate (20), and a third part (11) comprising a sheet in which the coil (12) comes connect, the contacts (21,22,23) of the plate (20) coming directly into contact with the standardized plug of the coil (12) when the electronic plate (20) is fitted in the second part (8) of the support (1). Tête de commande et de contrôle selon la revendication 1, caractérisée en ce que les contacts (21,22,23) de la plaque électronique (20) sont en forme de lyre.Command and control head according to claim 1, characterized in that the contacts (21,22,23) of the electronic plate (20) are shaped lyre. Tête de commande et de contrôle selon la revendication 1 ou 2, caractérisée en ce que la plaque électronique (20) comporte en outre des diodes LED (10) indiquant différents états du système dont au moins la position de l'actuateur en fonction des valeurs données par les capteurs de position (4,6).Command and control head according to claim 1 or 2, characterized in that the plate electronic (20) further comprises LED diodes (10) indicating different system states including at least the actuator position according to the given values by the position sensors (4,6). Tête de commande et de contrôle selon l'une des revendications 1 à 3, caractérisée en ce que la première partie (2) du support comporte des moyens (13,14) pour régler la hauteur des capteurs (4,6).Command and control head according to one of the claims 1 to 3, characterized in that the first part (2) of the support comprises means (13,14) to adjust the height of the sensors (4,6). Tête de commande et de contrôle selon l'une des revendications 1 à 4, caractérisée en ce que les moyens (13,14) pour régler la hauteur des capteurs (4,6) sont des vis.Command and control head according to one of the claims 1 to 4, characterized in that the means (13,14) to adjust the height of the sensors (4,6) are screws. Tête de commande et de contrôle selon l'une des revendications 1 à 5, caractérisée en ce que le support comporte en outre sur sa face extérieure une goulotte (7) pour faire passer les fils électriques.Command and control head according to one of the Claims 1 to 5, characterized in that the support also has a chute on its outside (7) for passing the electrical wires. Tête de commande et de contrôle selon l'une des revendications 1 à 6, caractérisée en ce que la plaque électronique (20) est noyée dans la cavité de la deuxième partie (8) du support intégré (1).Command and control head according to one of the claims 1 to 6, characterized in that the plate electronics (20) is embedded in the cavity of the second part (8) of the integrated support (1).
EP19970810556 1996-08-13 1997-08-06 Electro-pneumatic control-head for actuators Expired - Lifetime EP0824196B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01999/96A CH691003A5 (en) 1996-08-13 1996-08-13 electro-pneumatic control for head actuators.
CH1999/96 1996-08-13

Publications (2)

Publication Number Publication Date
EP0824196A1 true EP0824196A1 (en) 1998-02-18
EP0824196B1 EP0824196B1 (en) 1999-01-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970810556 Expired - Lifetime EP0824196B1 (en) 1996-08-13 1997-08-06 Electro-pneumatic control-head for actuators

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EP (1) EP0824196B1 (en)
CH (1) CH691003A5 (en)
DE (1) DE69700098T2 (en)
DK (1) DK0824196T3 (en)

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Publication number Priority date Publication date Assignee Title
WO2000068579A1 (en) * 1999-05-08 2000-11-16 Festo Ag & Co. Display device
FR2795460A1 (en) * 1999-06-28 2000-12-29 Defontaine Sa DEVICE FOR ASSEMBLING AT LEAST TWO CONTROL ELEMENTS PER FLUID UNDER PRESSURE
NL1016385C2 (en) * 2000-10-11 2002-04-12 El O Matic Bv Drive, shut-off valve and function part.
WO2002068828A1 (en) * 2001-02-22 2002-09-06 Festo Ag & Co Working cylinder
WO2005106257A1 (en) * 2004-05-04 2005-11-10 Bosch Rexroth Ag Control block for a hydrocylinder
WO2005124160A1 (en) * 2004-06-14 2005-12-29 Fisher Controls International Llc Feedback control methods and apparatus for electro-pneumatic control systems

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DE3625580A1 (en) * 1985-10-25 1987-04-30 Festo Kg Valve arrangement
EP0297150A1 (en) * 1987-06-27 1989-01-04 Pulsotronic Merten GmbH & Co. KG Position detector for the movable part of a fluid driven servomotor
DE4137586A1 (en) * 1991-11-15 1993-05-19 Frank Rueger Detector for sensing magnetic piston position in cylinder - uses two magnetic sensors, one mother sensor acting as a distribution device for transfer of signals to computer

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Publication number Priority date Publication date Assignee Title
EP0207270A2 (en) * 1985-06-29 1987-01-07 Mannesmann Rexroth Pneumatik Gmbh Contactless working proximity switching device
DE3625580A1 (en) * 1985-10-25 1987-04-30 Festo Kg Valve arrangement
EP0297150A1 (en) * 1987-06-27 1989-01-04 Pulsotronic Merten GmbH & Co. KG Position detector for the movable part of a fluid driven servomotor
DE4137586A1 (en) * 1991-11-15 1993-05-19 Frank Rueger Detector for sensing magnetic piston position in cylinder - uses two magnetic sensors, one mother sensor acting as a distribution device for transfer of signals to computer

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000068579A1 (en) * 1999-05-08 2000-11-16 Festo Ag & Co. Display device
US6427576B1 (en) 1999-05-08 2002-08-06 Festo Ag & Co. Display device
US6318409B1 (en) 1999-06-28 2001-11-20 S.A. Defontaine System for assembling at least two pressurized fluid control members
EP1065387A1 (en) * 1999-06-28 2001-01-03 S.A. Defontaine Assembly device for at least two fluid power control elements
FR2795460A1 (en) * 1999-06-28 2000-12-29 Defontaine Sa DEVICE FOR ASSEMBLING AT LEAST TWO CONTROL ELEMENTS PER FLUID UNDER PRESSURE
NL1016385C2 (en) * 2000-10-11 2002-04-12 El O Matic Bv Drive, shut-off valve and function part.
WO2002031363A1 (en) * 2000-10-11 2002-04-18 El-O-Matic B.V. Driving, mechanism, function part and shut-off valve
US6871663B2 (en) 2000-10-11 2005-03-29 El-O-Matic B.V. Driving mechanism, function part and shut-off valve
WO2002068828A1 (en) * 2001-02-22 2002-09-06 Festo Ag & Co Working cylinder
US6755115B2 (en) 2001-02-22 2004-06-29 Festo Ag & Co. Working cylinder
WO2005106257A1 (en) * 2004-05-04 2005-11-10 Bosch Rexroth Ag Control block for a hydrocylinder
WO2005124160A1 (en) * 2004-06-14 2005-12-29 Fisher Controls International Llc Feedback control methods and apparatus for electro-pneumatic control systems
US7337041B2 (en) 2004-06-14 2008-02-26 Fisher Controls International Feedback control methods and apparatus for electro-pneumatic control systems
CN1969127B (en) * 2004-06-14 2012-01-04 费希尔控制产品国际有限公司 Feedback control methods and apparatus for electro-pneumatic control systems

Also Published As

Publication number Publication date
EP0824196B1 (en) 1999-01-13
DK0824196T3 (en) 1999-09-06
DE69700098T2 (en) 1999-06-24
CH691003A5 (en) 2001-03-30
DE69700098D1 (en) 1999-02-25

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