EP0808923A1 - Open-end spinning rotor - Google Patents

Open-end spinning rotor Download PDF

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Publication number
EP0808923A1
EP0808923A1 EP97104252A EP97104252A EP0808923A1 EP 0808923 A1 EP0808923 A1 EP 0808923A1 EP 97104252 A EP97104252 A EP 97104252A EP 97104252 A EP97104252 A EP 97104252A EP 0808923 A1 EP0808923 A1 EP 0808923A1
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EP
European Patent Office
Prior art keywords
open
end spinning
rotor
spinning rotor
pot
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
EP97104252A
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German (de)
French (fr)
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EP0808923B1 (en
Inventor
Erich 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
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Rieter Ingolstadt Spinnereimaschinenbau AG
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Publication of EP0808923A1 publication Critical patent/EP0808923A1/en
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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
    • D01H4/10—Rotors

Definitions

  • the present application relates to an open-end spinning rotor according to the preamble of claim 1.
  • a spinning rotor is known, the rotor pot of which is connected to the carrier part of the rotor shaft via a coupling arrangement.
  • the coupling consists of two elastic hooks which engage in an undercut on the rotor pot when the rotor pot and rotor shaft are joined together. This undercut is in the form of an oblique surface.
  • the hooks press on these inclined surfaces due to the centrifugal force, as a result of which the pot of the spinning rotor is pulled in the direction of the carrier part and thus the rotor shaft.
  • the clutch arrangement is essentially attached to the rotor plate. It consists of a locking element which is guided in a bore formed perpendicular to the rotor axis.
  • the locking elements are unlocked by a spring.
  • the rotor pot is held by a magnet on the carrier part or rotor shaft. If the open-end spinning rotor is rotated, the locking elements emerge from the bores in which they are guided as a result of the centrifugal forces and lock the rotor pot and the carrier part receiving it.
  • DE-A 43 42 539 an open-end spinning rotor is known, in which the rotor pot is fastened on a base body which supports and drives it and is designed as an electric rotor, in that a type of screw connection is provided.
  • the use of an elastic element on at least part of the clip connection ensures that it has the necessary deformability for the assembly of the rotor pot and at the same time achieves that the Clip connection ensures a secure hold.
  • the elastic element ensures that vibrations that are transmitted to the spinning rotor via the carrier part or vibrations that are generated by an imbalance of the rotor pot do not burden the other part of the open-end spinning rotor with vibrations, or that the vibrations are caused by the elastic Element can be damped.
  • the elastic element also has the advantage that the centrifugal force generated by the rotation of the spinning rotor during operation ensures that the clip connection holds together even more firmly. It is particularly advantageous if at least part of the clip connection encompasses the elastic element in a ring. This makes it possible to securely fasten it with a large area on the elastic element. This can be done, for example, by gluing or during the shaping of the elastic element. It is particularly advantageous if part of the clip connection encompasses the elastic element in a ring when it is slotted. This increases its deformability so that the rotor pot can be more easily connected to the carrier part. It is particularly advantageous if several slots are provided.
  • the part of the clip connection attached to the rotor pot is particularly advantageously designed as an annular groove which can be introduced into the rotor pot in a simple manner, for example by machining.
  • the design of the carrier part as a hub forms a further advantageous embodiment of the invention.
  • the carrier part can then be pressed onto a rotor shaft in a particularly simple manner.
  • the part of the coupling which is not located on the rotor pot can advantageously be produced separately and then, for example, on the part of the open-end spinning rotor, which takes care of the storage and the drive, are pressed on.
  • This can be a rotor shaft, for example, or advantageously also the part of an electrical bearing and drive rotor.
  • the carrier part is advantageously formed with a stop on which the rotor pot is axially supported. This can ensure that the rotor plate can be connected to the carrier part in a precisely positioned position. Any dimensional deviations that occur in the area of the clip connection can be compensated.
  • the rotor pot has a counter surface that works together with the stop of the support part. When designing the elastic element from a plastic, this can be produced in a simple and inexpensive manner. It is also easy to connect this to the carrier part or, for example, also to the rotor plate.
  • plastic has the favorable property that it has a particularly good damping effect.
  • An elastomer is particularly suitable as a plastic.
  • the clip connection In a further advantageous embodiment of the clip connection, at least part of it is made of an aluminum alloy. This makes it possible to produce it in a simple operation. It is particularly cheap because it is accurate and quick to manufacture and is designed as an injection molded part.
  • the coupling connects the rotor pot and the rotor shaft or another support part of the rotor pot with one another in a form-fitting manner in the circumferential direction. This can advantageously ensure that there is no relative movement in the circumferential direction between the rotor shaft and the rotor pot. This is particularly important when accelerating the spinning rotor and braking it to a standstill.
  • the open-end spinning rotor 1 of FIG. 1 consists of a rotor pot 11, a carrier part 12 and a shaft 13, via which the spinning rotor 1 in a known manner, for example, supported by support disks and driven, for example, by a tangential belt.
  • the carrier part 12 consists of a hub 121 which is applied to the rotor shaft 13 by means of a press connection.
  • the hub 121 carries an elastic element 2 on its outer circumference. This is firmly connected to the hub 121, for example by means of an adhesive connection.
  • the elastic element 2 can be made of plastic or rubber, for example.
  • the elastic element 2 On its outer circumference, the elastic element 2 carries part of the coupling 3, via which the rotor pot 11 is connected to the carrier part 12.
  • the clutch 3 here consists of the nose 31, which cooperates with a circumferential groove 32, which is attached to the rotor pot 11.
  • the coupling 3 is designed as a clip connection, so that the rotor pot 11 can be attached to the carrier part 12 by simply plugging the two components together.
  • the lug 31 is arranged on the elastic element 2, the lug 31 can deflect towards the rotor shaft 13 when the support part and the rotor pot are joined, whereby the edge of the circumferential groove 32 can be pushed over the lug 31 so that a positive connection between nose 31 and circumferential groove 32 results.
  • the nose 31 is part of an annular element 310 which, like the hub 121, is firmly connected to the elastic element 2.
  • the ring-shaped element 310 can have one or more slots in the longitudinal direction of the shaft 13, which results in greater elasticity of the ring-shaped element when the rotor pot and the support part are joined together.
  • the slots can completely cut through the annular element 310, as can be seen in the lower half of FIG. 1 by the missing hatching. However, the slot can equally well only affect the part of the nose 31 of the annular element 310.
  • the annular element 310 can be made of steel, for example, while the rotor pot 11 can be made of aluminum, for example. It encompasses the elastic element 2 on its outer circumference.
  • the slot also serves at the same time as an anti-rotation device acting in the circumferential direction between the rotor pot 11 and the rotor shaft 13.
  • the circumferential groove 32 can be interrupted, for example, so that a web extending in the axial direction remains.
  • the same effect, namely the anti-rotation, can also z. B. achieved by means of axially extending pins, each of which partially engage in the rotor cup 11 and, for example, rotor shaft 13 or hub 121.
  • the open-end spinning rotor 1 When operating the open-end spinning rotor 1, it is set in rotation about its axis of rotation, which is the axis of rotation of the shaft 13, speeds of up to 150,000 revolutions per minute being entirely possible. As a result of the centrifugal forces acting on the clutch 3, the annular element 310 is expanded because the elastic element 2 yields to the centrifugal forces. A particularly good connection between the nose 31 and the circumferential groove 32 is thereby achieved. At the same time, however, the connection of the ring-shaped element 310 via the elastic element 2 to the hub 121 provides a connection which can be easily released when the spinning rotor 1 is at a standstill.
  • FIG. 2 shows an open-end spinning rotor likewise designed according to the invention in section and only partially shown.
  • the elastic element 2 is fastened here on a hub-shaped extension 122 of the rotor pot 11.
  • the annular element 310 of the coupling 3 is arranged on the elastic element 2.
  • the annular element 310 has a circumferential groove 32 which cooperates with a nose 31.
  • the nose 31 is part of the hub 121.
  • the carrier part 12 is connected to a shaft 13, via which the open-end spinning rotor 1 is supported in a known manner via support disks.
  • the carrier part 12 can also be connected to a bearing and drive part, as shown in DE-A 43 42 539.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

The coupling (3) between the rotor pot of an open end spinner, and the carrier, is a clip bond which holds part of the rotor pot (11) and part of the carrier (12). At least part of the clip bonding is taken up by an elastic component (2). Preferably the elastic component (2) is damped, and is in a ring round the clip coupling (3) at the carrier (12) which has a slit, or a number of slits, to increase the distortion which can be applied to it. The rotor pot (11) has a ring groove (32) as part of the clip coupling. The carrier (12) has a hub (121) structure to be pressed on a rotor shaft (13). The elastic component (2) is firmly bonded to the hub (121). The carrier (12) is an electrical mounting and drive motor, with a limit stop (4) for the rotor pot formed by the elastic component (2). The rotor pot (11) has a counter surface to work with the limit stop (4). The elastic component (2) is of plastics and pref. an elastomer. At least part of the clip coupling is of an aluminium alloy or is an injection moulded component. The clip coupling (3) gives a shaped fit between the rotor shaft (13) and the carrier (12) round the circumference.

Description

Die vorliegende Anmeldung betrifft einen Offenend-Spinnrotor gemäß dem Oberbegriff des Patentanspruches 1. Aus der DE-A 38 15 182 ist ein Spinnrotor bekannt, dessen Rotortopf mit dem Trägerteil der Rotorwelle über eine Kupplungsanordnung verbunden ist. Bei einer Ausführungsform besteht die Kupplung aus zwei elastischen Haken, die beim Zusammenfügen von Rotortopf und Rotorwelle in eine Hinterschneidung am Rotortopf eingreifen. Diese Hinterschneidung ist in Form einer schrägen Fläche ausgebildet. Bei Betrieb des Spinnrotors drücken die Haken infolge der Fliehkraft auf diese schrägen Flächen, wodurch der Topf des Spinnrotors in Richtung auf Trägerteil und damit Rotorschaft gezogen wird. Bei einer anderen Ausführungsform ist die Kupplungsanordnung im wesentlichen am Rotorteller angebracht. Sie besteht aus einem Verriegelungselement, das in einer senkrecht zur Rotorachse ausgebildeten Bohrung geführt ist. Im Stillstand des Offenend-Spinnrotors werden die Verriegelungselemente durch eine Feder entriegelt. Der Rotortopf wird durch einen Magneten am Trägerteil bzw. Rotorschaft gehalten. Wird der Offenend-Spinnrotor in Drehung versetzt, treten die Verriegelungselemente infolge der Fliehkräfte aus den Bohrungen, in denen sie geführt werden, heraus und verriegeln Rotortopf und das diesen aufnehmende Trägerteil. Aus der DE-A 43 42 539 ist ein Offenend-Spinnrotor bekannt, bei dem der Rotortopf auf einem ihn tragenden und antreibenden Grundkörper, der als elektrischer Rotor ausgebildet ist, dadurch befestigt ist, daß eine Art Schraubverbindung vorgesehen ist.The present application relates to an open-end spinning rotor according to the preamble of claim 1. From DE-A 38 15 182 a spinning rotor is known, the rotor pot of which is connected to the carrier part of the rotor shaft via a coupling arrangement. In one embodiment, the coupling consists of two elastic hooks which engage in an undercut on the rotor pot when the rotor pot and rotor shaft are joined together. This undercut is in the form of an oblique surface. When the spinning rotor is in operation, the hooks press on these inclined surfaces due to the centrifugal force, as a result of which the pot of the spinning rotor is pulled in the direction of the carrier part and thus the rotor shaft. In another embodiment, the clutch arrangement is essentially attached to the rotor plate. It consists of a locking element which is guided in a bore formed perpendicular to the rotor axis. When the open-end spinning rotor is at a standstill, the locking elements are unlocked by a spring. The rotor pot is held by a magnet on the carrier part or rotor shaft. If the open-end spinning rotor is rotated, the locking elements emerge from the bores in which they are guided as a result of the centrifugal forces and lock the rotor pot and the carrier part receiving it. From DE-A 43 42 539 an open-end spinning rotor is known, in which the rotor pot is fastened on a base body which supports and drives it and is designed as an electric rotor, in that a type of screw connection is provided.

Diese Ausführungsformen von Offenend-Spinnrotoren haben den Nachteil, daß die Verbindung zwischen Rotortopf und einem diesen aufnehmenden Trägerteil aufwendig und kostenintensiv ist. Aufgabe der vorliegenden Anmeldung ist es, die Nachteile des Standes der Technik zu vermeiden und einen Offenend-Spinnrotor vorzuschlagen, der einfacher im Aufbau und kostengünstiger herzustellen ist und dabei gleichzeitig eine sichere und einfache Montage des Rotortopfes gewährleistet. Die vorliegende Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst.These embodiments of open-end spinning rotors have the disadvantage that the connection between the rotor pot and a carrier part receiving it is complex and cost-intensive. The object of the present application is to avoid the disadvantages of the prior art and to propose an open-end spinning rotor which is simpler in construction and less expensive to manufacture, and while ensuring a safe and easy assembly of the rotor pot. The present object is achieved by the features of patent claim 1.

Durch die erfindungsgemäße Ausgestaltung des vorgeschlagenen Offenend-Spinnrotors, bei dem die Kupplung eine Klippsverbindung ist, wird durch die Verwendung eines elastischen Elements an wenigstens einem Teil der Klippsverbindung erreicht, daß diese die nötige Verformbarkeit für die Montage des Rotortopfes besitzt und gleichzeitig erreicht, daß die Klippsverbindung einen sicheren Halt gewährleistet. Gleichzeitig wird dadurch erreicht, daß wenigstens ein Teil der Klippsverbindung vom elastischen Element selbst aufgenommen werden kann, daß die Kupplung einfach ausgebildet ist und leicht herzustellen ist. Das elastische Element gewährleistet gleichzeitig, daß Schwingungen, die über das Trägerteil auf den Spinnrotor übertragen oder Schwingungen, die durch eine Unwucht des Rotortopfes erzeugt werden, das jeweils andere Teil des Offenend-Spinnrotors nicht mit Schwingungen belasten, bzw. daß die Schwingungen durch das elastische Element gedämpft werden können. Das elastische Element hat darüber hinaus den Vorteil, daß durch die Drehung des Spinnrotors im Betrieb die entstehende Fliehkraft dafür sorgt, daß die Klippsverbindung noch fester zusammenhält. Besonders vorteilhaft ist es, wenn wenigstens ein Teil der Klippsverbindung das elastische Element ringförmig umgreift. Dadurch ist es möglich, dieses sicher mit einer großen Fläche auf dem elastischen Element zu befestigen. Dies kann beispielsweise durch Kleben oder bereits bei der Ausformung des elastischen Elements geschehen. Besonders vorteilhaft ist es insbesondere, wenn ein Teil der Klippsverbindung das elastische Element ringförmig umgreift, wenn dieses geschlitzt ist. Dadurch erhöht sich seine Verformbarkeit, damit der Rotortopf mit dem Trägerteil leichter verbunden werden kann. Besonders vorteilhaft ist es dabei, wenn mehrere Schlitze vorgesehen werden. Das am Rotortopf angebrachte Teil der Klippsverbindung ist besonders vorteilhaft als ringförmige Nute ausgebildet, die auf einfache Weise durch z.B. spanende Bearbeitung in den Rotortopf eingebracht werden kann. Die Ausbildung des Trägerteils als Nabe bildet eine weitere vorteilhafte Ausgestaltung der Erfindung. Besonders einfach kann dann das Trägerteil z.B. auf einen Rotorschaft aufgepreßt werden. Dadurch kann vorteilhaft der Teil der Kupplung, der sich nicht am Rotortopf befindet, getrennt hergestellt werden und dann beispielsweise auf den Teil des Offenend-Spinnrotors, der für die Lagerung und den Antrieb sorgt, aufgepreßt werden. Dies kann z.B. ein Rotorschaft sein oder vorteilhaft auch der Teil eines elektrischen Lager- und Antriebsrotors. Vorteilhaft wird das Trägerteil mit einem Anschlag ausgebildet, an dem sich der Rotortopf axial abstützt. Dadurch kann dafür gesorgt werden, daß der Rotorteller genau positioniert mit dem Trägerteil verbunden werden kann. Eventuell auftretende Maßabweichungen im Bereich der Klippsverbindung können dadurch kompensiert werden. Dazu hat der Rotortopf eine Gegenfläche, die mit dem Anschlag des Trägerteils zusammenarbeitet. Bei der Ausgestaltung des elastischen Elements aus einem Kunststoff, kann dieses auf einfache Weise und kostengünstig hergestellt werden. Auch ist es einfach, dieses mit dem Trägerteil oder beispielsweise auch mit dem Rotorteller zu verbinden. Außerdem hat Kunststoff die günstige Eigenschaft, daß er besonders gut dämpfend wirkt. Als Kunststoff eignet sich dafür besonders ein Elastomer. In weiterer vorteilhaften Ausgestaltung der Klippsverbindung ist wenigstens ein Teil davon aus einer Aluminiumlegierung hergestellt. Dadurch ist es möglich es in einem einfachen Arbeitsgang herzustellen. Besonders günstig, weil formgenau und schnell herzustellen, ist es als Spritzgußteil ausgebildet. Bei einer besonders vorteilhaften Weiterbildung der Erfindung verbindet die Kupplung Rotortopf und Rotorschaft oder ein anderweitig ausgestaltetes Trägerteil des Rotortopfes in Umfangsrichtung formschlüssig miteinander. Dadurch kann vorteilhaft sichergestellt werden, daß keine Relativbewegung in Umfangsrichtung zwischen Rotorschaft und Rotortopf stattfindet. Dies ist insbesondere beim Beschleunigen des Spinnrotors und bei dessen Abbremsen zum Stillstand wichtig.Due to the inventive design of the proposed open-end spinning rotor, in which the coupling is a clip connection, the use of an elastic element on at least part of the clip connection ensures that it has the necessary deformability for the assembly of the rotor pot and at the same time achieves that the Clip connection ensures a secure hold. At the same time it is achieved that at least part of the clip connection can be received by the elastic element itself, that the coupling is simple and easy to manufacture. At the same time, the elastic element ensures that vibrations that are transmitted to the spinning rotor via the carrier part or vibrations that are generated by an imbalance of the rotor pot do not burden the other part of the open-end spinning rotor with vibrations, or that the vibrations are caused by the elastic Element can be damped. The elastic element also has the advantage that the centrifugal force generated by the rotation of the spinning rotor during operation ensures that the clip connection holds together even more firmly. It is particularly advantageous if at least part of the clip connection encompasses the elastic element in a ring. This makes it possible to securely fasten it with a large area on the elastic element. This can be done, for example, by gluing or during the shaping of the elastic element. It is particularly advantageous if part of the clip connection encompasses the elastic element in a ring when it is slotted. This increases its deformability so that the rotor pot can be more easily connected to the carrier part. It is particularly advantageous if several slots are provided. The part of the clip connection attached to the rotor pot is particularly advantageously designed as an annular groove which can be introduced into the rotor pot in a simple manner, for example by machining. The design of the carrier part as a hub forms a further advantageous embodiment of the invention. The carrier part can then be pressed onto a rotor shaft in a particularly simple manner. As a result, the part of the coupling which is not located on the rotor pot can advantageously be produced separately and then, for example, on the part of the open-end spinning rotor, which takes care of the storage and the drive, are pressed on. This can be a rotor shaft, for example, or advantageously also the part of an electrical bearing and drive rotor. The carrier part is advantageously formed with a stop on which the rotor pot is axially supported. This can ensure that the rotor plate can be connected to the carrier part in a precisely positioned position. Any dimensional deviations that occur in the area of the clip connection can be compensated. For this purpose, the rotor pot has a counter surface that works together with the stop of the support part. When designing the elastic element from a plastic, this can be produced in a simple and inexpensive manner. It is also easy to connect this to the carrier part or, for example, also to the rotor plate. In addition, plastic has the favorable property that it has a particularly good damping effect. An elastomer is particularly suitable as a plastic. In a further advantageous embodiment of the clip connection, at least part of it is made of an aluminum alloy. This makes it possible to produce it in a simple operation. It is particularly cheap because it is accurate and quick to manufacture and is designed as an injection molded part. In a particularly advantageous further development of the invention, the coupling connects the rotor pot and the rotor shaft or another support part of the rotor pot with one another in a form-fitting manner in the circumferential direction. This can advantageously ensure that there is no relative movement in the circumferential direction between the rotor shaft and the rotor pot. This is particularly important when accelerating the spinning rotor and braking it to a standstill.

Im folgenden wird die Erfindung anhand von zeichnerischen Darstellungen beschrieben. Es zeigen:

Figur 1
einen erfindungsgemäß ausgestalteten Offenend-Spinnrotor im Schnitt;
Figur 2
einen erfindungsgemäß ausgebildeten Offenend-Spinnrotor im Schnitt, in teilweiser Darstellung.
The invention is described below with the aid of graphic representations. Show it:
Figure 1
an open-end spinning rotor designed according to the invention in section;
Figure 2
an open-end spinning rotor designed according to the invention in section, in partial representation.

Der Offenend-Spinnrotor 1 von Figur 1 besteht aus einem Rotortopf 11, aus einem Trägerteil 12 und einem Schaft 13, über den der Spinnrotor 1 in bekannter Weise, beispielsweise über Stützscheiben, gelagert und beispielsweise über einen Tangentialriemen angetrieben wird. Das Trägerteil 12 besteht aus einer Nabe 121, die auf den Rotorschaft 13 mittels einer Preßverbindung aufgebracht ist. Die Nabe 121 trägt an ihrem Außenumfang ein elastisches Element 2. Dieses ist mit der Nabe 121, z.B. mittels einer Klebeverbindung, fest verbunden. Das elastische Element 2 kann beispielsweise aus Kunststoff oder aus Gummi hergestellt sein. An seinem Außenumfang trägt das elastische Element 2 einen Teil der Kupplung 3, über die der Rotortopf 11 mit dem Trägerteil 12 verbunden ist. Die Kupplung 3 besteht hier aus der Nase 31, die mit einer Umfangsnut 32, die am Rotortopf 11 angebracht ist, zusammenarbeitet. Die Kupplung 3 ist als eine Klippsverbindung ausgebildet, so daß die Befestigung des Rotortopfes 11 am Trägerteil 12 über einfaches Zusammenstecken der beiden Bauteile möglich ist. Dadurch, daß die Nase 31 auf dem elastischen Element 2 angeordnet ist, kann die Nase 31 beim Zusammenfügen von Trägerteil und Rotortopf in Richtung auf den Rotorschaft 13 ausweichen, wodurch der Rand der Umfangsnut 32 über die Nase 31 geschoben werden kann, so daß sich eine formflüssige Verbindung zwischen Nase 31 und Umfangsnut 32 ergibt. Die Nase 31 ist Teil eines ringförmigen Elements 310, das ebenso wie die Nabe 121 mit dem elastischen Element 2 fest verbunden ist. Das ringförmige Element 310 kann eine oder mehrere Schlitze in Längsrichtung des Schaftes 13 besitzen, wodurch sich eine größere Elastizität des ringförmigen Elements beim Zusammenfügen von Rotortopf und Trägerteil ergibt. Die Schlitze können dabei das ringförmige Element 310 ganz durchtrennen, wie in der unteren Hälfte von Figur 1 an der fehlenden Schraffur zu erkennen. Der Schlitz kann aber ebensogut auch nur den Teil der Nase 31 des ringförmigen Elements 310 betreffen. Das ringförmige Element 310 kann beispielsweise aus Stahl sein, während der Rotortopf 11 beispielsweise aus Aluminium hergestellt sein kann. Es umgreift das elastische Element 2 an dessen Außenumfang. Der Schlitz dient darüber hinaus gleichzeitig als in Umfangsrichtung wirkende Verdrehsicherung zwischen Rotortopf 11 und Rotorschaft 13. Dazu schlägt die Nase 31 in Umfangsrichtung an einen nicht dargestellten Anschlag des Rotortopfes 11 an. Um diesen Anschlag zu bilden, kann beispielsweise die Umfangsnut 32 unterbrochen sein, so daß ein in axialer Richtung verlaufender Steg stehenbleibt. Die gleiche Wirkung, nämlich die Verdrehsicherung, kann auch z. B. mittels axial verlaufender Stifte erreicht werden, die jeweils teilweise in den Rotortopf 11 und z.B. Rotorschaft 13 oder Nabe 121 eingreifen.The open-end spinning rotor 1 of FIG. 1 consists of a rotor pot 11, a carrier part 12 and a shaft 13, via which the spinning rotor 1 in a known manner, for example, supported by support disks and driven, for example, by a tangential belt. The carrier part 12 consists of a hub 121 which is applied to the rotor shaft 13 by means of a press connection. The hub 121 carries an elastic element 2 on its outer circumference. This is firmly connected to the hub 121, for example by means of an adhesive connection. The elastic element 2 can be made of plastic or rubber, for example. On its outer circumference, the elastic element 2 carries part of the coupling 3, via which the rotor pot 11 is connected to the carrier part 12. The clutch 3 here consists of the nose 31, which cooperates with a circumferential groove 32, which is attached to the rotor pot 11. The coupling 3 is designed as a clip connection, so that the rotor pot 11 can be attached to the carrier part 12 by simply plugging the two components together. Characterized in that the lug 31 is arranged on the elastic element 2, the lug 31 can deflect towards the rotor shaft 13 when the support part and the rotor pot are joined, whereby the edge of the circumferential groove 32 can be pushed over the lug 31 so that a positive connection between nose 31 and circumferential groove 32 results. The nose 31 is part of an annular element 310 which, like the hub 121, is firmly connected to the elastic element 2. The ring-shaped element 310 can have one or more slots in the longitudinal direction of the shaft 13, which results in greater elasticity of the ring-shaped element when the rotor pot and the support part are joined together. The slots can completely cut through the annular element 310, as can be seen in the lower half of FIG. 1 by the missing hatching. However, the slot can equally well only affect the part of the nose 31 of the annular element 310. The annular element 310 can be made of steel, for example, while the rotor pot 11 can be made of aluminum, for example. It encompasses the elastic element 2 on its outer circumference. The slot also serves at the same time as an anti-rotation device acting in the circumferential direction between the rotor pot 11 and the rotor shaft 13. In order to form this stop, the circumferential groove 32 can be interrupted, for example, so that a web extending in the axial direction remains. The same effect, namely the anti-rotation, can also z. B. achieved by means of axially extending pins, each of which partially engage in the rotor cup 11 and, for example, rotor shaft 13 or hub 121.

Beim Betrieb des Offenend-Spinnrotors 1 wird dieser um seine Drehachse, die die Drehachse des Schaftes 13 ist, in Drehung versetzt, wobei Drehzahlen bis zu 150.000 Umdrehungen pro Minute durchaus möglich sind. Dabei findet infolge der Fliehkräfte, die auf die Kupplung 3 wirken, ein Ausdehnen des ringförmigen Elements 310 statt, da das elastische Element 2 den Fliehkräften nachgibt. Dadurch wird eine besonders gute Verbindung zwischen der Nase 31 mit der Umfangsnut 32 bewerkstelligt. Gleichzeitig bietet aber die Verbindung von ringförmigem Element 310 über das elastische Element 2 mit der Nabe 121 eine Verbindung, die beim Stillstand des Spinnrotors 1 leicht lösbar ist.When operating the open-end spinning rotor 1, it is set in rotation about its axis of rotation, which is the axis of rotation of the shaft 13, speeds of up to 150,000 revolutions per minute being entirely possible. As a result of the centrifugal forces acting on the clutch 3, the annular element 310 is expanded because the elastic element 2 yields to the centrifugal forces. A particularly good connection between the nose 31 and the circumferential groove 32 is thereby achieved. At the same time, however, the connection of the ring-shaped element 310 via the elastic element 2 to the hub 121 provides a connection which can be easily released when the spinning rotor 1 is at a standstill.

Figur 2 zeigt einen ebenfalls gemäß der Erfindung ausgebildeten Offenend-Spinnrotor im Schnitt und nur teilweise dargestellt. Das elastische Element 2 ist hier auf einem nabenförmigen Ansatz 122 des Rotortopfes 11 befestigt. Auf dem elastischen Element 2 ist das ringförmige Element 310 der Kupplung 3 angeordnet. Bei Figur 2 besitzt das ringförmige Element 310 eine Umfangsnut 32, die mit einer Nase 31 zusammenarbeitet. Die Nase 31 ist im Ausführungsbeispiel von Figur 2 Teil der Nabe 121. Das Trägerteil 12 ist ebenso wie bei Figur 1 mit einem Schaft 13 verbunden, über das der Offenend-Spinnrotor 1 in bekannter Weise über Stützscheiben gelagert ist. Ebensogut kann das Trägerteil 12 jedoch auch mit einem Lager- und Antriebsteil verbunden sein, wie es in der DE-A 43 42 539 gezeigt ist.FIG. 2 shows an open-end spinning rotor likewise designed according to the invention in section and only partially shown. The elastic element 2 is fastened here on a hub-shaped extension 122 of the rotor pot 11. The annular element 310 of the coupling 3 is arranged on the elastic element 2. In FIG. 2, the annular element 310 has a circumferential groove 32 which cooperates with a nose 31. In the exemplary embodiment in FIG. 2, the nose 31 is part of the hub 121. As in FIG. 1, the carrier part 12 is connected to a shaft 13, via which the open-end spinning rotor 1 is supported in a known manner via support disks. However, the carrier part 12 can also be connected to a bearing and drive part, as shown in DE-A 43 42 539.

Claims (18)

Offenend-Spinnrotor bestehend aus einem Rotortopf und einem diesen aufnehmenden Trägerteil, über das der Rotortopf gelagert und angetrieben ist, wobei Rotortopf und Trägerteil über eine Kupplung miteinander verbunden sind, dadurch gekennzeichnet, daß die Kupplung (3) eine Klippsverbindung ist, wobei ein Teil der Klippsverbindung vom Rotortopf (11) und ein Teil vom Trägerteil (12) aufgenommen ist, und wenigstens eines der Teile der Klippsverbindung über ein elastisches Element (2) aufgenommen ist.Open-end spinning rotor consisting of a rotor pot and a carrier part receiving it, via which the rotor pot is mounted and driven, the rotor pot and carrier part being connected to one another via a coupling, characterized in that the coupling (3) is a clip connection, part of the Clip connection is received by the rotor pot (11) and part of the carrier part (12), and at least one of the parts of the clip connection is received via an elastic element (2). Offenend-Spinnrotor nach Anspruch 1, dadurch gekennzeichnet, daß das elastische Element (2) dämpfend ist.Open-end spinning rotor according to claim 1, characterized in that the elastic element (2) is damping. Offenend-Spinnrotor nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der dem Trägerteil (12) zugeordnete Teil der Klippsverbindung (3) ringförmig das elastische Element (2) umgreift.Open-end spinning rotor according to claim 1 or 2, characterized in that the part of the clip connection (3) assigned to the carrier part (12) surrounds the elastic element (2) in a ring. Offenend-Spinnrotor nach Anspruch 3, dadurch gekennzeichnet, daß das Teil der Klippsverbindung, das ringförmig das elastische Element (2) umgreift, zur Erhöhung seiner Verformbarkeit geschlitzt ist.Open-end spinning rotor according to claim 3, characterized in that the part of the clip connection which surrounds the elastic element (2) in a ring is slotted to increase its deformability. Offenend-Spinnrotor nach Anspruch 4, dadurch gekennzeichnet, daß das Teil, das ringförmig das elastische Element (2) umgreift, mehrfach geschlitzt ist.Open-end spinning rotor according to claim 4, characterized in that the part which surrounds the elastic element (2) in a ring is slit several times. Offenend-Spinnrotor nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Rotortopf (11) eine ringförmige Nute (32) besitzt, die Teil der Klippsverbindung ist.Open-end spinning rotor according to one or more of claims 1 to 5, characterized in that the rotor pot (11) has an annular groove (32) which is part of the clip connection. Offenend-Spinnrotor nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Trägerteil (12) als Nabe (121) ausgebildet ist.Open-end spinning rotor according to one or more of claims 1 to 6, characterized in that the carrier part (12) is designed as a hub (121). Offenend-Spinnrotor nach Anspruch 7, dadurch gekennzeichnet, daß die Nabe (121) auf einem Rotorschaft (13) aufgepreßt ist.Open-end spinning rotor according to claim 7, characterized in that the hub (121) is pressed onto a rotor shaft (13). Offenend-Spinnrotor nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß das elastische Element (2) mit der Nabe (121) fest verbunden ist.Open-end spinning rotor according to claim 7 or 8, characterized in that the elastic element (2) is fixedly connected to the hub (121). Offenend-Spinnrotor nach einem oder mehreren der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Trägerteil (12) Teil eines elektrischen Lager- und Antriebsrotors ist.Open-end spinning rotor according to one or more of claims 1 to 8, characterized in that the carrier part (12) is part of an electrical bearing and drive rotor. Offenend-Spinnrotor nach einem oder mehreren der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß das Trägerteil (12) einen Anschlag (4) für den Rotortopf besitzt.Open-end spinning rotor according to one or more of claims 1 to 10, characterized in that the carrier part (12) has a stop (4) for the rotor pot. Offenend-Spinnrotor nach Anspruch 11, dadurch gekennzeichnet, daß der Anschlag (4) durch das elastische Element (2) gebildet wird.Open-end spinning rotor according to claim 11, characterized in that the stop (4) is formed by the elastic element (2). Offenend-Spinnrotor nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß der Rotortopf (11) eine Gegenfläche besitzt, die mit dem Anschlag (4) des Trägerteils (12) zusammenarbeitet.Open-end spinning rotor according to claim 11 or 12, characterized in that the rotor pot (11) has a counter surface which cooperates with the stop (4) of the carrier part (12). Offenend-Spinnrotor nach einem oder mehreren der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß das elastische Element (2) aus einem Kunststoff besteht.Open-end spinning rotor according to one or more of claims 1 to 13, characterized in that the elastic element (2) consists of a plastic. Offenend-Spinnrotor nach Anspruch 14, dadurch gekennzeichnet, daß das elastische Element (2) aus einem Elastomer besteht.Open-end spinning rotor according to claim 14, characterized in that the elastic element (2) consists of an elastomer. Offenend-Spinnrotor nach einem oder mehreren der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß wenigstens ein Teil der Klippsverbindung aus einer Aluminiumlegierung besteht.Open-end spinning rotor according to one or more of claims 1 to 15, characterized in that at least part of the clip connection consists of an aluminum alloy. Offenend-Spinnrotor nach einem oder mehreren der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß wenigstens ein Teil der Klippsverbindung aus einem Spritzgußteil besteht.Open-end spinning rotor according to one or more of claims 1 to 16, characterized in that at least part of the clip connection consists of an injection molded part. Offenend-Spinnrotor nach einem oder mehreren der Ansprüche 1 bis 17, dadurch gekennzeichnet, daß die Kupplung (3) Rotorschaft (11) und Trägerteil (12) in Umfangsrichtung formschlüssig miteinander verbindet.Open-end spinning rotor according to one or more of claims 1 to 17, characterized in that the coupling (3) connects the rotor shaft (11) and carrier part (12) to one another in a form-fitting manner in the circumferential direction.
EP97104252A 1996-05-25 1997-03-13 Open-end spinning rotor Expired - Lifetime EP0808923B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19621190 1996-05-25
DE19621190A DE19621190A1 (en) 1996-05-25 1996-05-25 Open-end spinning rotor

Publications (2)

Publication Number Publication Date
EP0808923A1 true EP0808923A1 (en) 1997-11-26
EP0808923B1 EP0808923B1 (en) 2002-09-04

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Family Applications (1)

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EP97104252A Expired - Lifetime EP0808923B1 (en) 1996-05-25 1997-03-13 Open-end spinning rotor

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US (1) US5802838A (en)
EP (1) EP0808923B1 (en)
CZ (1) CZ289453B6 (en)
DE (2) DE19621190A1 (en)
SK (1) SK56297A3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1156142A1 (en) * 2000-05-16 2001-11-21 W. SCHLAFHORST AG & CO. Open-end spinning rotor
DE102009048295A1 (en) 2009-10-05 2010-07-29 Oerlikon Textile Gmbh & Co. Kg Open-end spinning rotor for use in textile industry, has spring element that is stretched during insertion of stub into borehole such that element transfers torque from shaft to cup, where element is detachably connected with cup and shaft
EP2657379A3 (en) * 2012-04-28 2014-04-16 Saurer Germany GmbH & Co. KG Open-end spinning rotor
EP2730686A1 (en) 2012-11-10 2014-05-14 Saurer Germany GmbH & Co. KG Open-end spinning rotor

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Publication number Priority date Publication date Assignee Title
DE10326849A1 (en) * 2003-06-14 2004-12-30 Saurer Gmbh & Co. Kg Spinning rotor for an open-end rotor spinning device
DE102005021920A1 (en) * 2005-05-12 2006-11-16 Saurer Gmbh & Co. Kg spinning rotor
DE202005016198U1 (en) * 2005-10-15 2005-12-29 Saurer Gmbh & Co. Kg Bobbin flange for bobbin with hysteresis brake, having rotating bush with snap fitting elements for connection to hysteresis disk, allowing easy detachment for maintenance
DE102007007260B4 (en) * 2007-02-14 2022-04-28 Saurer Spinning Solutions Gmbh & Co. Kg Spinning rotor for an open-end spinning device
DE102013108199A1 (en) 2013-07-31 2015-02-05 Maschinenfabrik Rieter Ag Open-end spinning rotor with a rotor cup, a rotor shaft and a coupling device
DE102016122595A1 (en) * 2016-11-23 2018-05-24 Maschinenfabrik Rieter Ag Rotor cup and open-end spinning rotor with a rotor cup
DE102017129152A1 (en) * 2017-12-07 2019-06-13 Maschinenfabrik Rieter Ag Opening roller for an open-end spinning device and open-end spinning device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1156142A1 (en) * 2000-05-16 2001-11-21 W. SCHLAFHORST AG & CO. Open-end spinning rotor
DE102009048295A1 (en) 2009-10-05 2010-07-29 Oerlikon Textile Gmbh & Co. Kg Open-end spinning rotor for use in textile industry, has spring element that is stretched during insertion of stub into borehole such that element transfers torque from shaft to cup, where element is detachably connected with cup and shaft
EP2657379A3 (en) * 2012-04-28 2014-04-16 Saurer Germany GmbH & Co. KG Open-end spinning rotor
EP2730686A1 (en) 2012-11-10 2014-05-14 Saurer Germany GmbH & Co. KG Open-end spinning rotor
DE102012022092A1 (en) 2012-11-10 2014-05-15 Saurer Germany Gmbh & Co. Kg Open-end spinning rotor
CN103806144B (en) * 2012-11-10 2017-04-26 索若德国两合股份有限公司 Open-end spinning rotor

Also Published As

Publication number Publication date
CZ289453B6 (en) 2002-01-16
SK56297A3 (en) 1997-12-10
DE19621190A1 (en) 1997-11-27
EP0808923B1 (en) 2002-09-04
US5802838A (en) 1998-09-08
DE59708104D1 (en) 2002-10-10
CZ117097A3 (en) 1997-12-17

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