EP0134888A1 - Open-end spinning device with a spinning rotor - Google Patents

Open-end spinning device with a spinning rotor Download PDF

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Publication number
EP0134888A1
EP0134888A1 EP84104746A EP84104746A EP0134888A1 EP 0134888 A1 EP0134888 A1 EP 0134888A1 EP 84104746 A EP84104746 A EP 84104746A EP 84104746 A EP84104746 A EP 84104746A EP 0134888 A1 EP0134888 A1 EP 0134888A1
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EP
European Patent Office
Prior art keywords
housing
flange
rotor
spinning
spinning rotor
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
EP84104746A
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German (de)
French (fr)
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EP0134888B1 (en
Inventor
Hans Friedrich Dr.-Ing. Müller-Storz
Erich Dipl.-Ing. Bock
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Schubert und Salzer Maschinenfabrik AG
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/12—Rotor bearings; Arrangements for driving or stopping
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/12—Rotor bearings; Arrangements for driving or stopping
    • D01H4/14—Rotor driven by an electric motor

Definitions

  • the invention relates to an open-end rotor spinning device with a spinning rotor that rotates during operation in a rotor housing that is under vacuum, the driven shaft of which is rotatably supported by means of bearing elements in a housing that is in turn inserted in a machine-side holder.
  • the object of the present invention is to enable the replacement of the spinning rotor with the housing receiving the bearing elements for the rotor shaft in an open-end rotor spinning device according to the preamble of claim 1 without loading the bearings.
  • the housing receiving the bearing elements has an annular flange which extends along the back of the spinning rotor and projects beyond the spinning rotor at least at its largest diameter.
  • the flange also serves as Additional heat sink for the bearings, the operating heat is dissipated via the housing receiving the bearing elements and the flange.
  • the flange is adapted to the shape of the spinning rotor and surrounds the spinning rotor at a short distance up to the area of its largest diameter, air turbulence influencing the energy consumption of the device is avoided in the area covered by the flange, so that the energy consumption is reduced.
  • a further energy saving and reduction of the noise level results from the fact that a ring is releasably placed on the flange, which together with the flange forms an open-ended housing which encloses the outer contour of the spinning rotor at a short distance.
  • a quick assembly and disassembly of the ring is made possible in that the ring is connected to the flange by a bayonet lock.
  • the flange is releasably attached to the housing receiving the bearing elements, it is interchangeable with other flange shapes.
  • the housing receiving the bearing elements is expediently axially fixed via the flange.
  • the axial fixation is preferably carried out by a spherical snap lock, which simultaneously fixes the flange and the housing receiving the bearing elements radially elastically and ensures that the damping effect of an elastic support of the housing receiving the bearing elements is retained in the machine-side bracket.
  • the elastic support is preferably carried out by means of O-rings, which carry the housing receiving the bearing elements on its circumference.
  • Figure 1 shows a spinning rotor 1 with a fiber collecting channel 10, which is rotatably mounted on the free end of a rotor shaft 2.
  • the rotor shaft 2 is mounted in ball bearings 20, which are located in a sleeve-shaped housing. This housing receiving the bearing elements is referred to below as the bearing housing 3.
  • the balls are arranged in the vicinity of both ends of the bearing housing 3 bearings 20 run in guide grooves 22, which is in the rotor shaft 2 - are working.
  • the outer ring of the ball bearings is designated 20 '.
  • the rotor shaft 2 is driven in any way at its free end facing away from the spinning rotor 1.
  • An individual electric drive is preferred, for example by an asynchronous motor, the rotor 4 of which is attached to the free shaft end with the interposition of a steel bushing 21.
  • the stator 41 of the electric motor is inserted into a motor housing 5 which is provided with cooling fins (FIG. 2).
  • O-rings 30 are mounted on the jacket of the bearing housing 3, which are fixed in ring grooves 31.
  • other elastic damping means for example rubber-metal springs, can also be used.
  • Labyrinths 32 and 33 on the two outer ends of the bearing housing 3 seal the bearing.
  • annular flange 60 Arranged on the end of the bearing housing 3 facing the spinning rotor 1 is an annular flange 60 which extends along the rear of the spinning rotor and projects beyond the spinning rotor at least at its largest diameter.
  • the flange 60 is adapted on its inside to the shape of the rear of the spinning rotor 1 and surrounds the spinning rotor 1 at a short distance up to the area of its largest diameter.
  • the flange 60 like the bearing housing 3, is made of a good heat-conducting material and is expediently detachably connected to the bearing housing 3, so that it can be replaced and spinning rotors of a different shape can be adapted.
  • the flange 60 can also be an integral part of the bearing housing 3.
  • the annular flange 60 By arranging the annular flange 60 on the bearing housing 3, a handle is obtained which makes it possible to insert the bearing housing 3 with the rotor shaft 2 bearing the spinning rotor 1 in it from the operating side of the machine without loading the bearings into a machine-side holder and pull it out if it is to be exchanged for a bearing housing with a spinning rotor of a different size and / or shape.
  • the flange 60 during operation is also an additional heat sink for the storage system and largely prevents air turbulence on the back of the spinning rotor, which has a favorable effect on the energy consumption of the device.
  • a ring 61 is releasably attached to the flange 60, so that the spinning rotor 1 is enclosed in an open-ended housing.
  • the housing which is formed from the flange 60 and the ring 61 and is designated overall by 6, has an inner contour adapted to the outer contour of the spinning rotor 1 and surrounds the spinning rotor 1 at a predetermined, small distance.
  • the ring 61 also consists of a good heat-conducting material and is connected to the flange 60 in the area of the largest diameter of the spinning rotor 1 by a bayonet lock. •
  • the motor housing 5 is inserted in a hole in the rear wall of the spinning chamber housing 7 and has a hole 51 (FIG. 2).
  • the bearing assembly shown in FIG. 1 is gripped on the annular flange 60 or the ring 61 and inserted into the bore 51 until the spring-loaded ball of a ball snap closure 8 flanged to the rear wall of the spinning chamber housing 7 into the ring-shaped approach of the bearing housing 3 Flange 60 engages.
  • the bearing housing 3, which receives the bearing elements for the rotor shaft 2 is thus axially fixed via the flange 60.
  • Two ball snap fasteners 8 lying opposite one another are provided for secure fixing. Since the diameter of the rotor 4 of the electric motor fastened on the rotor shaft 2 is smaller than the diameter of the bearing housing 3, the insertion of the bearing housing 3 into its holder is not hindered by the rotor 4.
  • This arrangement ensures that during operation, in which the spinning chamber housing 7 is closed in a known manner by a cover (not shown) containing a fiber feed channel and a yarn take-off channel and is under vacuum, there is no relative movement between the spinning rotor 1 and that from the flange 60 and the ring 61 formed housing 6 takes place.
  • the housing 6 can therefore have only a small, precisely defined radial distance from the spinning rotor 1 without the risk of damage.
  • the heat generated during operation is dissipated via the Mctcrgehause 5, by the. the bearing housing 3 supported by means of O-rings is separated only by a minimal air gap, and additionally discharged via the flange 60 or the housing 6 arranged on the bearing housing 3. This ensures sufficient cooling of the device even for high operating speeds.
  • the invention is not restricted to devices in which the rotor shaft is mounted in ball bearings. It can also be used to advantage in other types of storage.

Abstract

Bei einer Offenend-Rotorspinnvorrichtung ist der angetriebene Rotorschaft (2) des Spinnrotors (1) mittels Lagerelementen (20) in einem Gehäuse (3) drehbar gelagert, das in eine maschinenseitige Halterung eingesetzt ist. Das Auswechseln des Spinnrotors (1) mit dem Lagergehäuse (3) ohne Belastung der Lager wird durch einen auf dem Lagergehäuse (3) angeordneten Flansch (60) ermöglicht, der sich entlang der Rückseite des Spinnrotors (1) erstreckt und diesen wenigstens an seinem größten Durchmesser überragt. Der Flansch (60) dient beim Rotorwechsel als Handgriff und im laufenden Betrieb als zusätzlicher Kühlkörper für die Lager. Durch einen auf den Flansch (60) aufgesetzten Ring (61) kann ein stirnseitig offenes Gehäuse (6) gebildet werden, das die Außenkontur des Spinnrotors (1) in geringem Abstand umschließt und den Energieverbrauch vermindert.In an open-end rotor spinning device, the driven rotor shaft (2) of the spinning rotor (1) is rotatably supported by means of bearing elements (20) in a housing (3) which is inserted into a holder on the machine. The exchange of the spinning rotor (1) with the bearing housing (3) without loading the bearings is made possible by a flange (60) arranged on the bearing housing (3), which extends along the rear of the spinning rotor (1) and at least at its largest Exceeds diameter. The flange (60) serves as a handle when changing the rotor and as an additional heat sink for the bearings during operation. A ring (61) placed on the flange (60) can form a housing (6) which is open at the end and which encloses the outer contour of the spinning rotor (1) at a short distance and reduces energy consumption.

Description

Die Erfindung betrifft eine Offenend-Rotorspinnvorrichtung mit einem im Betrieb in einem unter Unterdruck stehenden Rotorgehäuse umlaufenden Spinnrotor, dessen angetriebener Schaft mittels Lagerelementen in einem Gehäuse drehbar gelagert ist, das seinerseits in einer maschinenseitigen Halterung eingesetzt ist.The invention relates to an open-end rotor spinning device with a spinning rotor that rotates during operation in a rotor housing that is under vacuum, the driven shaft of which is rotatably supported by means of bearing elements in a housing that is in turn inserted in a machine-side holder.

Bei Offenend-Rotorspinnmaschinen ist es aus technologischen Gründen erforderlich, die Spinnrotoren gegen solche anderer Größe und Form auszuwechseln. Das Auswechseln bereitet bei Vorrichtungen, bei denen der den Spinnrotor tragende Rotorschaft indirekt im Keilspalt von Stützrollen gelagert ist, keine Schwierigkeiten, da der Rotorschaft mit dem Spinnrotor problemlos nach vorn zur Bedienungsseite der Maschine hin aus der Stützrollenlagerung herausgezogen und ein Rotorschaft mit einem anderen Spinnrotor hineingeschoben werden kann. Dies ist bei einer direkten Lagerung des Rotorschaftes jedoch nicht ohne weiteres möglich. Auf dem Rotorschaft sitzen die Wälzlager normalerweise fest aufgepreßt, und die Lager sind ihrerseits in Lagergehäuse eingepreßt, so daß nur mit Werkzeugen und größerem Kraftaufwand ein Auswechseln des Rotors möglich ist, wobei eine Beschädigung des Lagers kaum zu vermeiden ist.In the case of open-end rotor spinning machines, for technological reasons it is necessary to replace the spinning rotors with those of a different size and shape. The replacement does not pose any problems for devices in which the rotor shaft carrying the spinning rotor is mounted indirectly in the wedge gap of support rollers, since the rotor shaft with the spinning rotor is easily pulled out of the support roller bearing toward the operating side of the machine and a rotor shaft with another spinning rotor is pushed in can be. However, this is not readily possible with a direct bearing of the rotor shaft. The roller bearings are normally firmly pressed onto the rotor shaft, and the bearings are in turn pressed into the bearing housing, so that the rotor can only be replaced with tools and greater force, and damage to the bearing can hardly be avoided.

Es ist nun eine im Oberbegriff des Anspruches berücksichtigte Vorrichtung bekannt, bei der der Spinnrotor mit dem die Lagerelemente des Rotorschaftes aufnehmenden Gehäuse in eine Bohrung einer Aufnahmewandung eingeschoben und mit federbelasteten Kugeln, die mit Ausnehmungen im Gehäuse korrespondieren, in seiner Lage ausgerichtet und fixiert wird (DE-PS 2.517.973). Diese Anordnung ermöglicht das Auswechseln des Spinnrotors zusammen mit dem die Lagerelemente aufnehmenden Gehäuse. Nachteilig ist dabei jedoch, daß beim Herausziehen des Gehäuses aus der Bohrung nach vorn zur Bedienungsseite hin und beim Einschieben eines Gehäuses mit einem anderen Spinnrotor die Lager über den Rotorschaft durch Zug- oder Druckkräfte belastet werden. Ein häufiges Auswechseln wirkt sich daher ungünstig auf die Lebensdauer der Lager aus.It is now known a device considered in the preamble of the claim, in which the spinning rotor with the housing receiving the bearing elements of the rotor shaft is inserted into a bore of a receiving wall and its position is aligned and fixed with spring-loaded balls that correspond to recesses in the housing ( DE-PS 2,517,973). This arrangement enables the spinning rotor to be exchanged together with the housing which accommodates the bearing elements. However, it is disadvantageous that when the housing is pulled out of the bore towards the front toward the operating side and when a housing is inserted with another spinning rotor, the bearings are loaded by the rotor shaft by tensile or compressive forces. Frequent replacement therefore has an unfavorable effect on the service life of the bearings.

Aufgabe der vorliegenden Erfindung ist es, bei einer Offenend-Rotorspinnvorrichtung gemäß dem Oberbegriff des Anspruches 1, das Auswechseln des Spinnrotors mit den die Lagerelemente für den Rotorschaft aufnehmenden Gehäuse ohne Belastung der Lager zu ermöglichen.The object of the present invention is to enable the replacement of the spinning rotor with the housing receiving the bearing elements for the rotor shaft in an open-end rotor spinning device according to the preamble of claim 1 without loading the bearings.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß das die Lagerelemente aufnehmende Gehäuse einen ringförmigen Flansch aufweist, der sich entlang der Rückseite des Spinnrotors erstreckt und den Spinnrotor wenigstens an seinem größten Durchmesser überragt.The object is achieved in that the housing receiving the bearing elements has an annular flange which extends along the back of the spinning rotor and projects beyond the spinning rotor at least at its largest diameter.

Damit ist es nun möglich, beim Rotorwechsel das Lageraggregat am ringförmigen Flansch zu fassen und es von der Bedienungsseite her ohne jede Krafteinwirkung auf die Lager in die maschinenseitige Halterung hineinzuschieben und aus ihr herauszuziehen. Gleichzeitig dient der Flansch aber auch als zusätzlicher Kühlkörper für die Lager, deren Betriebswärme über das die Lagerelemente aufnehmende Gehäuse und den Flansch abgeführt wird.It is now possible to take the bearing assembly by the ring-shaped flange when changing the rotor and to push it in and out of the machine-side bracket from the operating side without any force being exerted on the bearing. At the same time, the flange also serves as Additional heat sink for the bearings, the operating heat is dissipated via the housing receiving the bearing elements and the flange.

Dadurch daß der Flansch der Form des Spinnrotors angepaßt ist und den Spinnrotor bis zum Bereich seines größten Durchmessers in einem geringen Abstand umgibt, werden den Energieverbrauch der Vorrichtung beeinflussende Luftverwirbelungen in dem vom Flansch abgedeckten Bereich vermieden, so daß sich der Energieverbrauch vermindert. Eine weitere Energieersparnis und Herabsetzung des Geräuschpegels ergibt sich dadurch, daß auf den Flansch ein Ring lösbar aufgesetzt ist, der zusammen mit dem Flansch ein stirnseitig offenes Gehäuse bildet, das die Außenkontur des Spinnrotors in geringem Abstand umschließt. Eine schnelle Montage und Demontage des Ringes wird dadurch ermöglicht, daß der Ring durch einen Bajonettverschluß mit dem Flansch verbunden ist. Dadurch, daß der Flansch lösbar auf dem die Lagerelemente aufnehmenden Gehäuse befestigt ist, ist er gegen andere Flanschformen austauschbar. Zweckmäßig ist über den Flansch das die Lagerelemente aufnehmende Gehäuse axial fixiert. Die axiale Fixierung erfolgt vorzugsweise durch einen Kugel-Schnappverschluß, der gleichzeitig den Flansch und das die Lagerelemente aufnehmende Gehäuse radial elastisch fixiert und gewährleistet, daß die Dämpfungswirkung einer elastischen Abstützung des die Lagerelemente aufnehmenden Gehäuses in der maschinenseitigen Halterung erhalten bleibt. Vorzugsweise erfolgt die elastische Abstützung mittels O-Ringen, die das die Lagerelemente aufnehmende Gehäuse an seinem Umfang trägt.Because the flange is adapted to the shape of the spinning rotor and surrounds the spinning rotor at a short distance up to the area of its largest diameter, air turbulence influencing the energy consumption of the device is avoided in the area covered by the flange, so that the energy consumption is reduced. A further energy saving and reduction of the noise level results from the fact that a ring is releasably placed on the flange, which together with the flange forms an open-ended housing which encloses the outer contour of the spinning rotor at a short distance. A quick assembly and disassembly of the ring is made possible in that the ring is connected to the flange by a bayonet lock. Characterized in that the flange is releasably attached to the housing receiving the bearing elements, it is interchangeable with other flange shapes. The housing receiving the bearing elements is expediently axially fixed via the flange. The axial fixation is preferably carried out by a spherical snap lock, which simultaneously fixes the flange and the housing receiving the bearing elements radially elastically and ensures that the damping effect of an elastic support of the housing receiving the bearing elements is retained in the machine-side bracket. The elastic support is preferably carried out by means of O-rings, which carry the housing receiving the bearing elements on its circumference.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnungen beschrieben. Es zeigt

  • Figur 1 einen in einem Lagergehäuse gelagerten Rotorschaft mit einem Spinnrotor, der von einem zu einem Gehäuse ergänzten und auf dem Lagergehäuse angeordneten Flansch umgeben ist, teilweise im Längsschnitt;
  • Figur 2 das an einer Spinnstelle in eine ortsfeste Halterung eingebaute Aggregat aus Figur 1 im Längsschnitt.
An embodiment of the invention is described below with reference to the drawings. It shows
  • 1 shows a rotor shaft mounted in a bearing housing with a spinning rotor, which is surrounded by a flange which has been added to a housing and is arranged on the bearing housing, partly in longitudinal section;
  • FIG. 2 shows the unit from FIG. 1 installed in a stationary holder at a spinning position in longitudinal section.

Figur 1 zeigt einen Spinnrotor 1 mit einer Fasersammelrinne 10, der auf das freie Ende eines Rotorschaftes 2 drehfest aufgesetzt ist. Der Rotorschaft 2 ist in Kugellagern 20 gelagert, die sich in einem hülsenförmigen Gehäuse befinden. Dieses, die Lagerelemente aufnehmende Gehäuse wird im folgenden als Lagergehäuse 3 bezeichnet. Die Kugeln der in Nähe der beiden Enden des Lagergehäuses 3 angeordneten Kugellager 20 laufen in Führungsrillen 22, die in den Rotorschaft 2 einge- arbeitet sind. Der Außenring der Kugellager ist mit 20' bezeichnet.Figure 1 shows a spinning rotor 1 with a fiber collecting channel 10, which is rotatably mounted on the free end of a rotor shaft 2. The rotor shaft 2 is mounted in ball bearings 20, which are located in a sleeve-shaped housing. This housing receiving the bearing elements is referred to below as the bearing housing 3. The balls are arranged in the vicinity of both ends of the bearing housing 3 bearings 20 run in guide grooves 22, which is in the rotor shaft 2 - are working. The outer ring of the ball bearings is designated 20 '.

Der Rotorschaft 2 wird an seinem dem Spinnrotor 1 abgewandten freien Ende in beliebiger Weise angetrieben. Bevorzugt wird ein elektrischer Einzelantrieb, beispielsweise durch einen Asynchronmotor, dessen Rotor 4 unter Zwischenschaltung einer Stahlbuchse 21 auf dem freien Schaftende befestigt ist. Der Stator 41 des Elektromotors ist in ein Motorgehäuse 5 eingesetzt, das mit Kühlrippen versehen ist (Figur 2). Auf den Mantel des Lagergehäuses 3 sind in Nähe der beiden Kugellager 20 O-Ringe 30 aufgezogen, die in Ringnuten 31 fixiert sind. Anstelle von O-Ringen können auch andere elastische Dämpfungsmittel, beispielsweise Gummi-Metallfedern, verwendet werden. Labyrinthe 32 und 33 an den beiden äußeren Enden des Lagergehäuses 3 dichten das Lager.The rotor shaft 2 is driven in any way at its free end facing away from the spinning rotor 1. An individual electric drive is preferred, for example by an asynchronous motor, the rotor 4 of which is attached to the free shaft end with the interposition of a steel bushing 21. The stator 41 of the electric motor is inserted into a motor housing 5 which is provided with cooling fins (FIG. 2). In the vicinity of the two ball bearings 20 O-rings 30 are mounted on the jacket of the bearing housing 3, which are fixed in ring grooves 31. Instead of O-rings, other elastic damping means, for example rubber-metal springs, can also be used. Labyrinths 32 and 33 on the two outer ends of the bearing housing 3 seal the bearing.

Auf dem dem Spinnrotor 1 zugewandten Ende des Lagergehäuses 3 ist ein ringförmiger Flansch 60 angeordnet, der sich entlang der Rückseite des Spinnrotors erstreckt und den Spinnrotor wenigstens an seinem größten Durchmesser überragt. In der gezeigten und bevorzugten Ausführung ist der Flansch 60 auf seiner Innenseite der Form der Rückseite des Spinnrotors 1 angepaßt und umgibt den Spinnrotor 1 bis zum Bereich seines größten Durchmessers in einem geringen Abstand. Der ebenso wie das Lagergehäuse 3 aus einem gut wärmeleitenden Material bestehende Flansch 60 ist zweckmäßig lösbar mit dem Lagergehäuse 3 verbunden, so daß er austauschbar ist und Spinnrotoren anderer Form angepaßt werden kann. Der Flansch 60 kann aber auch integrierter Bestandteil des Lagergehäuses 3 sein.Arranged on the end of the bearing housing 3 facing the spinning rotor 1 is an annular flange 60 which extends along the rear of the spinning rotor and projects beyond the spinning rotor at least at its largest diameter. In the shown and preferred embodiment, the flange 60 is adapted on its inside to the shape of the rear of the spinning rotor 1 and surrounds the spinning rotor 1 at a short distance up to the area of its largest diameter. The flange 60, like the bearing housing 3, is made of a good heat-conducting material and is expediently detachably connected to the bearing housing 3, so that it can be replaced and spinning rotors of a different shape can be adapted. The flange 60 can also be an integral part of the bearing housing 3.

Durch die Anordnung des ringförmigen Flansches 60 auf dem Lagergehäuse 3 erhält man einen Handgriff, der es ermöglicht, das Lagergehäuse 3 mit dem in ihm gelagerten, den Spinnrotor 1 tragenden Rotorschaft 2 von der Bedienungsseite der Maschine aus ohne Belastung der Lager in eine maschinenseitige Halterung einzuschieben und aus ihr herauszuziehen, wenn es gegen ein Lagergehäuse mit einem Spinnrotor anderer Größe und/oder Form ausgetauscht werden soll. Außerdem ist der Flansch 60 im laufenden Betrieb aber auch ein zusätzlicher Kühlkörper für das Lagersystem und verhindert weitgehend Luftverwirbelungen auf der Rückseite des Spinnrotors, was sich günstig auf den Energieverbrauch der Vorrichtung auswirkt. Um einen noch größeren Kühlkörper zu erhalten und den Energieverbrauch weiter zu reduzieren sowie den Geräuschpegel herabzusetzen, ist auf dem Flansch 60 ein Ring 61 lösbar befestigt, so daß der Spinnrotor 1 in einem stirnseitig offenen Gehäuse eingeschlossen ist. Das aus dem Flansch 60 und dem Ring 61 gebildete, insgesamt mit 6 bezeichnete Gehäuse hat eine der Außenkontur des Spinnrotors 1 angepaßte Innenkontur und umgibt den Spinnrotor 1 in vorbestimmtem, geringem Abstand. Der Ring 61 besteht ebenfalls aus einem gut wärmeleitenden Material und ist im Bereich des größten Durchmessers des Spinnrotors 1 durch einen Bajonettverschluß mit dem Flansch 60 verbunden. •By arranging the annular flange 60 on the bearing housing 3, a handle is obtained which makes it possible to insert the bearing housing 3 with the rotor shaft 2 bearing the spinning rotor 1 in it from the operating side of the machine without loading the bearings into a machine-side holder and pull it out if it is to be exchanged for a bearing housing with a spinning rotor of a different size and / or shape. In addition, the flange 60 during operation is also an additional heat sink for the storage system and largely prevents air turbulence on the back of the spinning rotor, which has a favorable effect on the energy consumption of the device. To get an even bigger heat sink and to further reduce energy consumption and reduce the noise level, a ring 61 is releasably attached to the flange 60, so that the spinning rotor 1 is enclosed in an open-ended housing. The housing, which is formed from the flange 60 and the ring 61 and is designated overall by 6, has an inner contour adapted to the outer contour of the spinning rotor 1 and surrounds the spinning rotor 1 at a predetermined, small distance. The ring 61 also consists of a good heat-conducting material and is connected to the flange 60 in the area of the largest diameter of the spinning rotor 1 by a bayonet lock. •

Das Motorgehäuse 5 ist in eine Bohrung in der Rückwand des Spinnkammergehäuses 7 paßgenau eingesetzt und besitzt seinerseits eine Bohrung 51 (Figur 2).The motor housing 5 is inserted in a hole in the rear wall of the spinning chamber housing 7 and has a hole 51 (FIG. 2).

Das in Figur 1 dargestellte Lageraggregat wird am ringförmigen Flansch 60 oder dem Ring 61 ergriffen und in die Bohrung 51 eingeschoben, bis die federbelastete Kugel eines an der Rückwand des Spinnkammergehäuses 7 angeflanschten Kugel-Schnappverschlusses 8 in den ringförmigen, auf dem Lagergehäuse 3 sitzenden Ansatz des Flansches 60 einrastet. Das Lagergehäuse 3, das die Lagerelemente für den Rotorschaft 2 aufnimmt, ist damit über den Flansch 60 axial fixiert. Zur sicheren Fixierung sind zwei einander gegenüberliegende Kugel-Schnappverschlüsse 8 vorgesehen. Da der Durchmesser des auf dem Rotorschaft 2 befestigten Rotors 4 des Elektromotors kleiner als der Durchmesser des Lagergehäuses 3 ist, wird das Einschieben des Lagergehäuses 3 in seine Halterung durch den Rotor 4 nicht behindert. Der Festlegung des Flansches 60 und des Lagergehäuses 3 durch einen Kugel-Schnappverschluß wird gegenüber anderen möglichen Verschlüssen der Vorzug gegeben, da mit diesem Verschluß neben der axialen Fixierung gleichzeitig eine radial elastische Fixierung des Flansches 60 und des die Lagerelemente aufnehmenden Gehäuses 3 erfolgt. Dadurch bleiben die Dämpfungseigenschaften der auf dem Umfang des Lagergehäuses 3 angeordneten O-Ringe 30, die für eine Zentrierung des Lagergehäuses 3 in der Bohrung 51 sorgen, erhalten und die freie Beweglichkeit des Lagergehäuses 3 in der Bohrung 51 wird nicht behindert.The bearing assembly shown in FIG. 1 is gripped on the annular flange 60 or the ring 61 and inserted into the bore 51 until the spring-loaded ball of a ball snap closure 8 flanged to the rear wall of the spinning chamber housing 7 into the ring-shaped approach of the bearing housing 3 Flange 60 engages. The bearing housing 3, which receives the bearing elements for the rotor shaft 2, is thus axially fixed via the flange 60. Two ball snap fasteners 8 lying opposite one another are provided for secure fixing. Since the diameter of the rotor 4 of the electric motor fastened on the rotor shaft 2 is smaller than the diameter of the bearing housing 3, the insertion of the bearing housing 3 into its holder is not hindered by the rotor 4. The fixing of the flange 60 and the bearing housing 3 by means of a ball snap lock Compared to other possible closures, this is preferred because, in addition to the axial fixation, this closure also provides a radially elastic fixation of the flange 60 and of the housing 3 accommodating the bearing elements. As a result, the damping properties of the O-rings 30 arranged on the circumference of the bearing housing 3, which ensure that the bearing housing 3 is centered in the bore 51, are retained and the free mobility of the bearing housing 3 in the bore 51 is not impeded.

Mit dieser Anordnung ist sichergestellt, daß im laufenden Betrieb, in dem das Spinnkammergehäuse 7 in bekannter Weise durch einen nicht gezeigten, einen Faserzuführkanal und einen Garnabzugskanal enthaltenden Deckel verschlossen ist und unter Unterdruck steht, keine Relativbewegung zwischen dem Spinnrotor 1 und dem aus dem Flansch 60 und dem Ring 61 gebildeten Gehäuse 6 stattfindet. Das auf dem elastisch gelagerten Lagergehäuse 3 angeordnete, den Spinnrotor 1 umschließende Gehäuse 6 schwingt mit dem Spinnrotor 1 mit. Das Gehäuse 6 kann daher zum Spinnrotor 1 einen nur geringen, genau definierten radialen Abstand haben, ohne daß die Gefahr von Beschädigungen besteht. Außerdem wird vermieden, daß aufgrund einer außermittigen Anordnung des Spinnrotors 1 zum Gehäuse 6 am laufenden Spinnrotor 1 eine zu große Pumpwirkung auftritt, die zu einem Anstieg der Luftreibungsverluste führt. Die genau definierte formmäßige Anpassung des Spinnrotors 1 an das Gehäuse 6 ermöglicht damit eine Einsparung von Antriebsenergie, die bei höchsten Drehzahlen des Spinnrotors 1, beispielsweise 100.000 m - und höher, erheblich ist.This arrangement ensures that during operation, in which the spinning chamber housing 7 is closed in a known manner by a cover (not shown) containing a fiber feed channel and a yarn take-off channel and is under vacuum, there is no relative movement between the spinning rotor 1 and that from the flange 60 and the ring 61 formed housing 6 takes place. The housing 6 arranged on the elastically mounted bearing housing 3 and enclosing the spinning rotor 1 oscillates with the spinning rotor 1. The housing 6 can therefore have only a small, precisely defined radial distance from the spinning rotor 1 without the risk of damage. In addition, it is avoided that due to an eccentric arrangement of the spinning rotor 1 relative to the housing 6 on the running spinning rotor 1, an excessive pumping action occurs, which leads to an increase in air friction losses. The precisely defined shape adaptation of the spinning rotor 1 to the housing 6 thus enables a saving of drive energy, which is considerable at the highest speeds of the spinning rotor 1, for example 100,000 m - and higher.

Die im Betrieb entstehende Lagerwärme wird über das Mctcrgehause 5, von den. das mittels O-Ringen gelagerte Lagergehäuse 3 nur durch einen minimalen Luftspalt getrennt ist, und zusätzlich über den auf dem Lagergehäuse 3 angeordneten Flansch 60 bzw. das Gehäuse 6 abgeführt. Damit ist eine auch für hohe Betriebsdrehzahlen ausreichende Kühlung der Vorrichtung sichergestellt.The heat generated during operation is dissipated via the Mctcrgehause 5, by the. the bearing housing 3 supported by means of O-rings is separated only by a minimal air gap, and additionally discharged via the flange 60 or the housing 6 arranged on the bearing housing 3. This ensures sufficient cooling of the device even for high operating speeds.

Die Erfindung ist nicht auf Vorrichtungen beschränkt, bei denen der Rotorschaft in Kugellagern gelagert ist. Sie kann mit Vorteil auch bei anderen Lagerungsarten Verwendung finden.The invention is not restricted to devices in which the rotor shaft is mounted in ball bearings. It can also be used to advantage in other types of storage.

Claims (8)

1. Offenend-Rotorspinnvorrichtung mit einem im Betrieb in einem unter Unterdruck stehenden Rotorgehäuse umlaufenden Spinnrotor, dessen angetriebener Rotorschaft mittels Lagerelementen in einem Gehäuse drehbar gelagert ist, das seinerseits in eine maschinenseitige Halterung eingesetzt ist, dadurch gekennzeichnet , daß das die Lagerelemente aufnehmende Gehäuse (3) einen ringförmigen Flansch (60) aufweist, der sich entlang der Rückseite des Spinnrotors erstreckt und den Spinnrotor (1) wenigstens an seinem größten Durchmesser überragt.1.Open-end rotor spinning device with a spinning rotor rotating during operation in a rotor housing which is under negative pressure, the driven rotor shaft of which is rotatably mounted by means of bearing elements in a housing which is in turn inserted into a machine-side holder, characterized in that the housing receiving the bearing elements (3 ) has an annular flange (60) which extends along the rear of the spinning rotor and projects beyond the spinning rotor (1) at least at its largest diameter. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet , daß der Flansch (60) der Form des Spinnrotors (1) angepaßt ist und den Spinnrotor (1) bis zum Bereich seines größten Durchmessers in einem geringen Abstand umgibt.2. Device according to claim 1, characterized in that the flange (60) is adapted to the shape of the spinning rotor (1) and surrounds the spinning rotor (1) up to the region of its largest diameter at a short distance. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet , daß auf den Flansch (60) ein Ring (61) lösbar aufgesetzt ist, der zusammen mit dem Flansch (60) ein stirnseitig offenes Gehäuse (6) bildet, das die Außenkontur des Spinnrotors (1) in geringem Abstand umschließt.3. Apparatus according to claim 1 or 2, characterized in that a ring (61) is releasably placed on the flange (60), which together with the flange (60) forms an open-ended housing (6) which forms the outer contour of the spinning rotor (1) encloses at a short distance. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet , daß der Ring (61) durch einen Bajonettverschluß mit dem Flansch (60) verbunden ist.4. The device according to claim 3, characterized in that the ring (61) is connected by a bayonet lock with the flange (60). 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Flansch (60) lösbar auf dem die Lagerelemente aufnehmenden Gehäuse (3) befestigt ist.5. Device according to one of claims 1 to 4, characterized in that the flange (60) is releasably attached to the housing receiving the bearing elements (3). 6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet , daß über den Flansch (60) das die Lagerelemente aufnehmende Gehäuse (3) axial fixiert ist.6. Device according to one of claims 1 to 5, characterized in that the housing (3) receiving the bearing elements is axially fixed via the flange (60). 7. Vorrichtung nach Anspruch 6, ddadurch gekennzeichnet , daß die axiale Fixierung durch einen Kugel-Schnappverschluß (8) erfolgt, der gleichzeitig den Flansch (60) und das die Lagerelemente aufnehmende Gehäuse (3) radial elastisch fixiert.7. The device according to claim 6, characterized in that the axial fixation takes place by a ball snap lock (8) which simultaneously fixes the flange (60) and the housing (3) accommodating the bearing elements in a radially elastic manner. 8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet , daß das die Lagerelemente aufnehmende Gehäuse (3) an seinem Umfang O-Ringe (30) trägt.8. Device according to one of claims 1 to 7, characterized in that the housing receiving the bearing elements (3) carries on its circumference O-rings (30).
EP84104746A 1983-07-22 1984-04-27 Open-end spinning device with a spinning rotor Expired EP0134888B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3326405 1983-07-22
DE3326405A DE3326405C2 (en) 1983-07-22 1983-07-22 Open-end rotor spinning device

Publications (2)

Publication Number Publication Date
EP0134888A1 true EP0134888A1 (en) 1985-03-27
EP0134888B1 EP0134888B1 (en) 1986-09-24

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EP84104746A Expired EP0134888B1 (en) 1983-07-22 1984-04-27 Open-end spinning device with a spinning rotor

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US (1) US4633664A (en)
EP (1) EP0134888B1 (en)
JP (1) JPS6045619A (en)
CS (1) CS276390B6 (en)
DE (2) DE3326405C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524313A1 (en) * 1985-07-06 1987-01-15 Schubert & Salzer Maschinen OPEN-END SPIDER
DE3626880A1 (en) * 1985-09-03 1987-03-05 Zvl Vyzk Ustav Pro Valiva Rolling bearing arrangement for an electric spindle
DE3710962A1 (en) * 1986-04-12 1987-10-15 Skf Textilmasch Komponenten Open-end spinning apparatus with an electromotive individual drive for the spinning rotor

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62282822A (en) * 1986-05-29 1987-12-08 Fanuc Ltd Conductive work holder for wire-cut electric discharge machine
JPH0653982B2 (en) * 1987-08-24 1994-07-20 株式会社日立製作所 Motor direct drive spindle device
JPH0311248Y2 (en) * 1987-10-06 1991-03-19
CS266602B1 (en) * 1987-11-19 1990-01-12 Rajsigl Zdenek Rolling seating for a textile spindle
FR2646175B1 (en) * 1989-04-25 1991-06-14 Icbt Lyon TWISTING SPINDLE DRIVEN BY A SINGLE ELECTRIC MOTOR
DE3924373C2 (en) * 1989-07-22 2000-02-24 Temco Textilmaschkomponent Textile spindle with single-motor drive, with the rotor suspended in a damped manner
DE4418723C1 (en) * 1994-05-28 1995-08-31 Rieter Ingolstadt Spinnerei Open end rotor spinner avoiding frequent rotor and cover renewal
US5831360A (en) * 1995-12-15 1998-11-03 Iai Corporation Actuator
DE19608267C1 (en) * 1996-03-05 1997-03-06 Skf Textilmasch Komponenten Open-end spinning rotor direct driven by axial field motor
DE19642471B4 (en) * 1996-10-15 2005-05-19 Saurer Gmbh & Co. Kg Open-end spinning device with a single-motor driven spinning rotor
EP0926275B1 (en) * 1997-12-18 2003-09-10 W. SCHLAFHORST AG & CO. Open-end spinning device for making S or Z twist yarns
DE10040109A1 (en) * 2000-08-17 2002-02-28 Schlafhorst & Co W Bearing housing for a drive device of a textile machine producing cross-wound bobbins
EP1660707B1 (en) * 2003-08-23 2007-08-22 Oerlikon Textile GmbH & Co. KG Opening roller for an open-end spinning device
DE102007027456A1 (en) * 2007-06-14 2008-12-24 Continental Automotive Gmbh Bearing arrangement for use in turbocharger of motor vehicle for supporting shaft in housing, has damping layer formed from absorption material provided between arrangement and housing, and casing device formed from metal or metal alloy
DE102013006357A1 (en) * 2013-04-12 2014-10-16 Saurer Germany Gmbh & Co. Kg Open-end spinning device and sealing element for an open-end rotor spinning device
DE102015007819A1 (en) * 2015-06-18 2016-12-22 Saurer Germany Gmbh & Co. Kg Spinning rotor for an open-end spinning device operating at high rotor speeds
CN108456955A (en) * 2018-03-26 2018-08-28 杭州三相科技有限公司 A kind of independent direct driving superspeed revolving cup structure and its cluster control system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2112556A1 (en) * 1970-11-09 1972-06-16 Platt International Ltd
US3911659A (en) * 1972-08-17 1975-10-14 Rieter Ag Maschf Bearing arrangement for a spinning rotor of an open end spinning device
US3958846A (en) * 1975-06-06 1976-05-25 The Barden Corporation Open end spinning spindle
DE2517973B1 (en) * 1975-04-23 1976-05-26 Dornier System Gmbh BEARING FOR SPINDLES OF SPINNING TURBINES
US3972171A (en) * 1971-06-21 1976-08-03 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Housing construction for open end spinning machines

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1560301A1 (en) * 1966-08-11 1972-04-06 Schubert & Salzer Maschinen Device for cleaning spinning turbines in open-end spinning devices
DE2130688B2 (en) * 1971-06-21 1973-05-24 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt OPEN-END SPINNING DEVICE
DE2261041A1 (en) * 1972-12-14 1974-06-27 Fritz Stahlecker FEEDING AND DISPOSING DEVICE OF AN OPEN-END SPINNING MACHINE ARRANGED IN A SUPPORTING BODY STATIONARY.
CH581207A5 (en) * 1973-10-24 1976-10-29 Vyzk Ustav Bavlnarsky
US4117359A (en) * 1974-01-30 1978-09-26 Teldix Gmbh Bearing and drive structure for spinning turbine
DE2538261C3 (en) * 1975-08-28 1981-08-06 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Open-end spinning device
DE2630031A1 (en) * 1976-07-03 1978-01-12 Teldix Gmbh BEARING AND DRIVE ARRANGEMENT FOR AN OPEN-END SPINNING TURBINE
DE2640176C2 (en) * 1976-09-07 1985-10-10 Stahlecker, Fritz, 7347 Bad Überkingen Open-end spinning unit with an opening roller
DE2653927C3 (en) * 1976-11-27 1979-08-30 Teldix Gmbh, 6900 Heidelberg Open-end spinning turbine
CH622292A5 (en) * 1977-09-15 1981-03-31 Bbc Brown Boveri & Cie

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2112556A1 (en) * 1970-11-09 1972-06-16 Platt International Ltd
US3972171A (en) * 1971-06-21 1976-08-03 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Housing construction for open end spinning machines
US3911659A (en) * 1972-08-17 1975-10-14 Rieter Ag Maschf Bearing arrangement for a spinning rotor of an open end spinning device
DE2517973B1 (en) * 1975-04-23 1976-05-26 Dornier System Gmbh BEARING FOR SPINDLES OF SPINNING TURBINES
US3958846A (en) * 1975-06-06 1976-05-25 The Barden Corporation Open end spinning spindle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524313A1 (en) * 1985-07-06 1987-01-15 Schubert & Salzer Maschinen OPEN-END SPIDER
DE3626880A1 (en) * 1985-09-03 1987-03-05 Zvl Vyzk Ustav Pro Valiva Rolling bearing arrangement for an electric spindle
DE3710962A1 (en) * 1986-04-12 1987-10-15 Skf Textilmasch Komponenten Open-end spinning apparatus with an electromotive individual drive for the spinning rotor

Also Published As

Publication number Publication date
CS556984A3 (en) 1992-01-15
JPS6045619A (en) 1985-03-12
DE3326405C2 (en) 1986-04-10
US4633664A (en) 1987-01-06
DE3460806D1 (en) 1986-10-30
JPH0532499B2 (en) 1993-05-17
DE3326405A1 (en) 1985-02-07
EP0134888B1 (en) 1986-09-24
CS276390B6 (en) 1992-05-13

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