EP0407732B1 - Open-end spinning device - Google Patents

Open-end spinning device Download PDF

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Publication number
EP0407732B1
EP0407732B1 EP90110554A EP90110554A EP0407732B1 EP 0407732 B1 EP0407732 B1 EP 0407732B1 EP 90110554 A EP90110554 A EP 90110554A EP 90110554 A EP90110554 A EP 90110554A EP 0407732 B1 EP0407732 B1 EP 0407732B1
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EP
European Patent Office
Prior art keywords
insert
housing
seal
radial surface
facing
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.)
Expired - Lifetime
Application number
EP90110554A
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German (de)
French (fr)
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EP0407732A1 (en
Inventor
Johann Pohn
Romeo Pohn
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 EP0407732A1 publication Critical patent/EP0407732A1/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
    • D01H4/38—Channels for feeding fibres to the yarn forming region

Definitions

  • the present invention relates to an open-end spinning device with a spinning element, a housing for a rotatable opening roller and a fiber feed channel which extends from the housing to the spinning element and which consists of two partial channels which can be moved relative to one another and brought into alignment with one another.
  • an elastic seal is arranged in one of the two facing end faces (DE 3,512,592 A1). Because of its elasticity, this seal ensures that tolerances in the movement of the second subchannel relative to the first subchannel are accommodated, this ring seal ensuring a seal regardless of these path tolerances.
  • this ring seal holds the mutually facing end faces of the two sub-channels at a distance from each other, so that a gap is formed between the two sub-channels, into which fibers enter in order to settle here. This danger is increased by the static charge that occurs. These fibers are detached from time to time and come as specks of fiber into the spinning element, where they lead to a malfunction in the form of thick spots in the thread or to thread breaks.
  • an insert is axially movable in the housing, which forms the first subchannel and is held in alignment with the subchannels by an elastic element in contact with the second subchannel and at its end facing the interior of the housing - in with respect to the direction of rotation of the opening roller - is covered at least downstream by an aperture.
  • the two subchannels are brought into mutual contact so that no gap is formed between them. As a result, no fibers can get stuck here. Irregularities in the thread produced and / or thread breaks are avoided in this way.
  • the mutual contact of the two subchannels is brought about by the elastic element, which presses the insert against the second subchannel.
  • the end of the insert facing the interior of the housing is covered, at least in its endangered area, so that no fibers can get into the gap between the cover and the insert.
  • a seal is arranged between the insert and the housing. There is therefore no air flow in the gap in the area of the opening roller-side end of the insert which could have a negative influence on the fiber flow, since the interior of the fiber feed channel is sealed from the atmosphere by the seal arranged between the insert and the housing.
  • the insert is guided in the opening roller housing so as to be movable only in the axial direction. If, however, larger tolerances are to be expected, then according to a further advantageous embodiment of the subject matter of the invention, the insert is not only guided in the opening roller housing in the axial direction, but also in a radially movable manner, the seal being designed as a radial seal. In this way, the insert can perform slight tilting movements in the opening roller housing and thus adapt to the second channel part.
  • Such a mounting of the insert in the housing is preferably effected in that both the insert and the housing have cylindrical guide surfaces through which the insert is guided with play, the seal being arranged between these cylindrical guide surfaces.
  • the insert has a radial surface facing the housing at its end facing the second subchannel and outside the housing, and the elastic element is designed as a spring ring between the radial surface of the insert and a radial surface of the housing is arranged.
  • the axial elastic support of the insert can be achieved by differently designed elastic elements. According to a preferred embodiment it is provided that the insert has a support surface for the elastic element at its end furthest from the second subchannel.
  • the insert outside the housing has a radial surface facing the housing and the elastic element is formed by the seal which is arranged between the radial surface of the insert and a radial surface of the housing.
  • the housing has an anti-rotation lock for the insert.
  • the screen for covering the end of the insert facing the opening roller can be designed differently.
  • the diaphragm is designed as a lining covering at least part of the inner wall of the housing. Another advantageous embodiment of the diaphragm provides that it is formed by a part of the housing which extends into the insert.
  • the device according to the invention is simple in construction and enables the insert to be replaced quickly if it becomes unusable due to wear.
  • this quick and easy interchangeability also enables simple adaptation to different fiber feed channels, which could possibly be necessary by exchanging a spinning element.
  • fibers can get stuck in the fiber feed channel on their way between the opening roller housing and the spinning element, so that there is also no longer any danger of fiber accumulations resulting from this. Irregularities in the thread or thread breaks due to such fiber accumulations are thus avoided. Nevertheless, a perfect seal of the fiber feed channel from the outside air is ensured, so that the fiber transport is not impaired.
  • the invention is explained below using the example of a spinning device 1 which has a spinning rotor 10 as the spinning element, but it can also be used in other open-end spinning devices, e.g. Use friction spinning devices.
  • the spinning rotor 10 is rotatably arranged in a housing 11 according to FIG. 1. This can be covered by a cover 20, which is supported by a pivotable cover 2, which covers the individual elements of the spinning device 1.
  • the cover 2 is pivotally mounted on a pivot axis 22 so that the cover 20 can be pivoted away from the housing 11.
  • the cover 20 receives a thread take-off tube 21 and part of a fiber feed channel 3, which will be described in more detail below.
  • the fiber feed channel 3 is divided into two subchannels and 31, of which the first subchannel 30 is arranged in an insert 32 and the second subchannel 31 in the cover 20.
  • the insert 32 is guided in an axially movable manner in a housing 4 which receives a drivable opening roller 40.
  • the opening roller 40 is connected upstream of a delivery device 41, which in the exemplary embodiment shown has a drivable delivery roller 410 in the usual way, with which an elastically loaded feed trough 411 cooperates.
  • the facing end faces of the parts receiving the two sub-channels 30 and 31, i.e. the facing end faces of the insert 32 and the cover 20 are designed as continuous smooth and flat sealing surfaces 200 and 323, so that when they are in mutual contact, no fibers 50 can get between these sealing surfaces 200 and 323.
  • the inlet mouth 310 of the sub-channel 31 is also larger in the usual way than the outlet mouth 300 of the sub-channel 30, so that there is also no edge protruding into the fiber feed channel 3, on which fibers 50 could get caught.
  • the insert 32 has a cylindrical outer contour, which is designed as a guide surface 322, and is mounted in the housing 4 with radial play.
  • the housing 4 has a cylindrical recess which is designed as a guide surface 42 for the insert 32.
  • the housing 4 is provided with a panel 43, which covers the entire inner surface of the housing 4 and only leaves an opening 430 in the area of the delivery device 41 and an opening 431 in the area of the fiber feed channel 3.
  • the opening 430 enables a sliver 5 to be fed to the opening roller 40, while the opening 431 allows fibers 50 to exit from the interior of the housing 4 into the fiber feed channel 3.
  • This lining 43 covers the end of the insert 32 facing the opening roller 40 on its downstream side (with reference to the arrow P).
  • the subchannel 30 also becomes on the upstream side somewhat covers and thus separates a recess 44 from the interior 45, in which the opening roller 40 is located.
  • This recess 44 receives a support surface 325, which is located at the most distant end of the insert 31 from the insert 32, and an elastic element, for example in the form of a compression spring 440, which is supported on this support surface 325 and a wall of the recess 44 .
  • the sliver 5 is presented through an opening 23 in the cover 2 of the delivery device 41, which feeds the sliver 5 to the opening roller 40.
  • the opening roller 40 which rotates in the direction of the arrow P, combs fibers 50 out of the leading end of the fiber sliver 5, which fibers enter the fiber feed channel 3 and from there into the spinning rotor 10, where they are deposited in a fiber collecting groove and form a fiber ring 51 there.
  • the end of a thread 52 is in contact with the fiber ring 51, which is continuously drawn off by a pull-off device (not shown) and thereby integrates the fiber ring 51 into its end for the continuous formation of the thread 52.
  • the cover 2 is folded away from the housing 11.
  • the spinning rotor 10 becomes accessible.
  • the subchannel 31 located in the cover 20 releases the end of the subchannel 30 facing away from the opening roller 40.
  • the piecing process is carried out the cover 2 is brought back to its working position shown in FIG. 1 in a known manner.
  • the cover 20 rests with its sealing surface 200 on the sealing surface 323 of the insert 32.
  • the two subchannels 30 and 31 are again in alignment with one another, the insert 32 with the subchannel 30 being held in contact with the cover 20 with the subchannel 31 by the elastic element (compression spring 440).
  • the insert 32 is mounted in the housing 4 such that it can move axially and the second subchannel 31 is acted upon by the elastic element (compression spring 440) in the direction of the cover 20.
  • the front end of the insert 32 facing the opening roller 40 is - as mentioned - at least on its downstream side (see arrow P marked transport direction) covered by the aperture 43, so that even if the insert 32 is somewhat removed from the opening roller 40 , no fibers 50 can get into the gap 324 between insert 32 and aperture 43.
  • the compression spring 440 is also shielded by the aperture 43, so that no fibers 50 can get stuck here either.
  • the insert 32 can adjust its position to the cover 20 in such a way that the mutually facing sealing surfaces 200 and 323 of the insert 32 receiving the sub-channel 30 and the cover 20 receiving the sub-channel 31 seal against one another invest.
  • the sealing surfaces 200 and 323 can be designed in different ways; there must simply be no gap between them in the region of the transition from subchannel 30 to subchannel 31.
  • sealing surfaces 200 and 323 can also be different, e.g. be designed as a labyrinth seal, but here too a gap on its radially inner side must be avoided.
  • the elastic element is designed as a compression spring 440 and is arranged at the end of the insert 32 which is furthest away from the second subchannel 31.
  • the insert 32 has a radial surface 320 outside the housing 4, which faces the housing 4.
  • the housing has a similar radial surface 46 that is opposite the radial surface 320 of the insert 32.
  • a spring ring 460 is located between these two radial surfaces.
  • a seal designed as a sealing ring 6 is provided between the cylindrical guide surfaces 322 and 42 and is axially secured in the usual way by a groove 422.
  • the sealing ring 6 can of course also be arranged in a circumferential groove (not shown) of the insert 32 instead.
  • the sealing ring 6 forming a radial seal can possibly be supplemented by a further sealing ring (not shown), the insert 32 being able to carry out only an extremely slight radial movement.
  • FIG. 3 shows a further modification of the device according to the invention, the insert 32 again having a radial surface 320 and the housing 4 having a radial surface 46.
  • a seal 60 is provided, which on the one hand brings about a radial seal between the housing 4 and 32 and, on the other hand, is designed at the same time as an elastic element, through which the insert 32 is acted upon in the axial direction and is pressed in the direction of the subchannel 31.
  • this construction results in the same function as in the embodiments previously described with the aid of FIGS. 1 and 2.
  • the seal 6 or 60 the insert 32 is guided in the housing 4 so that the risk of adjustment by turning is largely prevented. This is particularly the case when the sealing surfaces 200 and 323 are oriented perpendicular to the longitudinal axis of the insert 32, since this ensures the sealing effect in the same way in every rotational position of the insert 32.
  • the insert 32 can be assigned a rotation lock 7.
  • the rotation lock 7 can e.g. are formed in that the insert 32 and the housing 4 have cooperating guide surfaces which deviate from the circular shape.
  • the anti-rotation device 7 is formed by the cooperating surfaces of insert 32 and lining 43.
  • An axial groove may also be provided, into which a radially projecting nose protrudes, so that it is guided in this axial groove (not shown), although it does not matter in principle whether the axial groove is in the housing and the nose is on the insert or whether the order is reversed. However, care must be taken to ensure that the sealing effect is not impaired by this. If the insert 32 is secured against rotation, then it always assumes its optimal position with respect to the cover 20 with the sub-channel 31, which ensures a perfect seal at the transition from the sub-channel 30 to the sub-channel 31.
  • the aperture 43 does not necessarily have to be designed as a housing lining which extends over the entire inner circumference of the housing 4. It is sufficient if it only extends over the endangered area of the insert 32. Depending on the design of the insert 32, the orifice 43 upstream of the feed channel 3 need not or only partially cover the insert 32.
  • this housing piece extends into the insert 32. This ends on its end facing the opening roller 40 in an annular groove 47, from which a pipe socket 470 protrudes into the interior of the insert 32, which in this way forms the diaphragm and fulfills its function.
  • the insert 32 on the opening roller side can have a conical widening 321 on its inside and the pipe socket 470 on the insert side on its outer circumference have a conical taper 471.

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

Description

Die vorliegende Erfindung betrifft eine Offenend-Spinnvorrichtung mit einem Spinnelement, einem Gehäuse für eine drehbare Auflösewalze sowie einem sich vom Gehäuse zum Spinnelement erstreckenden Faserspeisekanal, der aus zwei relativ zueinander bewegbaren und in Flucht zueinander bringbaren Teilkanälen besteht.The present invention relates to an open-end spinning device with a spinning element, a housing for a rotatable opening roller and a fiber feed channel which extends from the housing to the spinning element and which consists of two partial channels which can be moved relative to one another and brought into alignment with one another.

Bei bisher bekannten gattungsgemäßen Vorrichtungen wird in einer der beiden einander zugewandten Stirnflächen eine elastische Dichtung angeordnet (DE 3.512.592 A1). Aufgrund ihrer Elastizität sorgt diese Dichtung dafür, daß Toleranzen in der Bewegung des zweiten Teilkanals gegenüber dem ersten Teilkanal aufgenommen werden, wobei diese Ringdichtung unabhängig von diesen Wegtoleranzen eine Abdichtung gewährleistet. Diese Ringdichtung hält jedoch die einander zugewandten Stirnflächen der beiden Teilkanäle im Abstand zueinander, so daß zwischen den beiden Teilkanälen ein Spalt entsteht, in welchen Fasern gelangen, um sich hier festzusetzen. Durch die auftretende statische Aufladung wird diese Gefahr noch vergrößert. Diese Fasern werden von Zeit zu Zeit losgelöst und kommen als Faserbatzen ins Spinnelement, wo sie zu einer Störung in Form von Dickstellen im Faden oder zu Fadenbrüchen führen.In previously known generic devices, an elastic seal is arranged in one of the two facing end faces (DE 3,512,592 A1). Because of its elasticity, this seal ensures that tolerances in the movement of the second subchannel relative to the first subchannel are accommodated, this ring seal ensuring a seal regardless of these path tolerances. However, this ring seal holds the mutually facing end faces of the two sub-channels at a distance from each other, so that a gap is formed between the two sub-channels, into which fibers enter in order to settle here. This danger is increased by the static charge that occurs. These fibers are detached from time to time and come as specks of fiber into the spinning element, where they lead to a malfunction in the form of thick spots in the thread or to thread breaks.

Aufgabe der vorliegenden Erfindung ist es daher, eine gattungsgemäße Vorrichtung so weiterzubilden, daß bei einwandfreier Abdichtung der Trennstelle zwischen den beiden Teilkanälen ein Hängenbleiben von Fasern ausgeschlossen wird.It is therefore an object of the present invention to develop a generic device in such a way that if the separation point between the two sub-channels is properly sealed, fibers cannot get caught.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß im Gehäuse ein Einsatz axialbeweglich geführt ist, der den ersten Teilkanal bildet und bei in Flucht zueinander gebrachten Teilkanälen durch ein elastisches Element in Anlage am zweiten Teilkanal gehalten wird und an seinem dem Innenraum des Gehäuses zugewandten Ende - in bezug auf die Drehrichtung der Auflösewalze - wenigstens stromabwärts durch eine Blende abgedeckt ist. Die beiden Teilkanäle werden zur gegenseitigen Anlage gebracht, so daß zwischen ihnen kein Spalt gebildet wird. Folglich können sich hier auch keine Fasern festsetzen. Unregelmäßigkeiten im erzeugten Faden und/oder Fadenbrüche werden hierdurch vermieden. Die gegenseitige Anlage der beiden Teilkanäle wird durch das elastische Element bewirkt, welches den Einsatz gegen den zweiten Teilkanal drückt. Das dem Innenraum des Gehäuses zugewandte Ende des Einsatzes wird zumindest in seinem gefährdeten Bereich abgedeckt, so daß keine Fasern in den Spalt zwischen Abdeckung und Einsatz gelangen können. Um diese Wirkung zu unterstützen, kann in vorteilhafter Weiterbildung des Erfindungsgegenstandes vorgesehen sein, daß zwischen Einsatz und Gehäuse eine Dichtung angeordnet ist. Somit entsteht im Spalt im Bereich des auflösewalzenseitigen Endes des Einsatzes keine Luftströmung, die eine negative Beeinflussung des Faserstromes bewirken könnte, da der Innenraum des Faserspeisekanals gegenüber der Atmosphäre durch die zwischen Einsatz und Gehäuse angeordnete Dichtung abgedichtet wird.This object is achieved in that an insert is axially movable in the housing, which forms the first subchannel and is held in alignment with the subchannels by an elastic element in contact with the second subchannel and at its end facing the interior of the housing - in with respect to the direction of rotation of the opening roller - is covered at least downstream by an aperture. The two subchannels are brought into mutual contact so that no gap is formed between them. As a result, no fibers can get stuck here. Irregularities in the thread produced and / or thread breaks are avoided in this way. The mutual contact of the two subchannels is brought about by the elastic element, which presses the insert against the second subchannel. The end of the insert facing the interior of the housing is covered, at least in its endangered area, so that no fibers can get into the gap between the cover and the insert. Around Supporting effect can be provided in an advantageous development of the subject matter of the invention that a seal is arranged between the insert and the housing. There is therefore no air flow in the gap in the area of the opening roller-side end of the insert which could have a negative influence on the fiber flow, since the interior of the fiber feed channel is sealed from the atmosphere by the seal arranged between the insert and the housing.

Bei entsprechender Justierung der beiden Teilkanäle zueinander kann es ausreichend sein, wenn der Einsatz lediglich in axialer Richtung beweglich im Auflösewalzengehäuse geführt wird. Wenn jedoch mit größeren Toleranzen zu rechnen ist, so wird gemäß einer weiteren vorteilhaften Ausbildung des Erfindungsgegenstandes der Einsatz nicht nur in axialer Richtung, sondern zusätzlich auch radial beweglich im Auflösewalzengehäuse geführt, wobei die Dichtung als Radialdichtung ausgebildet ist. Auf diese Weise kann der Einsatz geringfügige Kippbewegungen im Auflösewalzengehäuse ausführen und sich somit dem zweiten Kanalteil anpassen. Vorzugsweise wird eine derartige Lagerung des Einsatzes im Gehäuse dadurch bewirkt, daß sowohl der Einsatz als auch das Gehäuse zylinderförmige Führungsflächen aufweisen, durch welche der Einsatz mit Spiel geführt wird, wobei die Dichtung zwischen diesen zylinderförmigen Führungsflächen angeordnet ist.With a corresponding adjustment of the two subchannels to one another, it may be sufficient if the insert is guided in the opening roller housing so as to be movable only in the axial direction. If, however, larger tolerances are to be expected, then according to a further advantageous embodiment of the subject matter of the invention, the insert is not only guided in the opening roller housing in the axial direction, but also in a radially movable manner, the seal being designed as a radial seal. In this way, the insert can perform slight tilting movements in the opening roller housing and thus adapt to the second channel part. Such a mounting of the insert in the housing is preferably effected in that both the insert and the housing have cylindrical guide surfaces through which the insert is guided with play, the seal being arranged between these cylindrical guide surfaces.

Gemäß einer vorteilhalften Ausbildung der erfindungsgemäßen Vorrichtung kann vorgesehen sein, daß der Einsatz an seinem dem zweiten Teilkanal zugewandten Ende und außerhalb des Gehäuses eine dem Gehäuse zugewandte Radialfläche aufweist und das elastische Element als Federring ausgebildet ist, der zwischen der Radialfläche des Einsatzes und einer Radialfläche des Gehäuses angeordnet ist.According to an advantageous embodiment of the device according to the invention, it can be provided that the insert has a radial surface facing the housing at its end facing the second subchannel and outside the housing, and the elastic element is designed as a spring ring between the radial surface of the insert and a radial surface of the housing is arranged.

Um eine besonders gute und dichtende Anlage der beiden Teilkanäle zu erreichen, ist es zweckmäßig, die einander zugewandten Stirnflächen der Teilkanäle als ununterbrochene glatte Dichtflächen auszubilden.In order to achieve a particularly good and sealing contact of the two subchannels, it is expedient to design the end faces of the subchannels facing one another as uninterrupted smooth sealing surfaces.

Die axiale elastische Abstützung des Einsatzes kann durch unterschiedlich ausgebildete elastische Elemente erreicht werden. Gemäß einer bevorzugten Ausführung ist vorgesehen, daß der Einsatz an seinem dem zweiten Teilkanal entferntesten Ende eine Stützfläche für das elastische Element aufweist.The axial elastic support of the insert can be achieved by differently designed elastic elements. According to a preferred embodiment it is provided that the insert has a support surface for the elastic element at its end furthest from the second subchannel.

Es ist nicht erforderlich, daß die Dichtung und das elastische Element durch zwei separate Elemente gebildet werden. Gemäß einer weiteren vorteilhaften Ausbildung der erfindungsgemäßen Vorrichtung ist vorgesehen, daß der Einsatz außerhalb des Gehäuses eine dem Gehäuse zugewandte Radialfläche aufweist und das elastische Element durch die Dichtung gebildet wird, welche zwischen der Radialfläche des Einsatzes und einer Radialfläche des Gehäuses angeordnet ist.It is not necessary for the seal and the elastic element to be formed by two separate elements. According to a further advantageous embodiment of the device according to the invention it is provided that the insert outside the housing has a radial surface facing the housing and the elastic element is formed by the seal which is arranged between the radial surface of the insert and a radial surface of the housing.

Um sicherzustellen, daß der Einsatz seine Drehposition gegenüber dem Gehäuse nicht ändern kann, wodurch auch die Dichtfunktion zwischen den beiden Kanalteilen beeinträchtigt werden könnte, ist es vorteilhaft, wenn das Gehäuse eine Drehsicherung für den Einsatz aufweist.In order to ensure that the insert cannot change its rotational position relative to the housing, which could also impair the sealing function between the two channel parts, it is advantageous if the housing has an anti-rotation lock for the insert.

Die Blende zum Abdecken des der Auflösewalze zugewandten Endes des Einsatzes kann unterschiedlich ausgebildet sein. Gemäß einer bevorzugten Ausbildung des Erfindungsgegenstandes ist die Blende als eine mindestens einen Teil der Innenwand des Gehäuses abdekkende Auskleidung ausgebildet. Eine weitere vorteilhafte Ausbildung der Blende sieht vor, daß diese durch einen sich bis in den Einsatz hinein erstreckenden Teil des Gehäuses gebildet wird.The screen for covering the end of the insert facing the opening roller can be designed differently. According to a preferred embodiment of the subject matter of the invention, the diaphragm is designed as a lining covering at least part of the inner wall of the housing. Another advantageous embodiment of the diaphragm provides that it is formed by a part of the housing which extends into the insert.

Die erfindungsgemäße Vorrichtung ist einfach im Aufbau und ermöglicht in rascher Weise einen Austausch des Einsatzes, wenn dieser durch Verschleiß unbrauchbar geworden sein sollte. Darüber hinaus ermöglicht diese rasche und leichte Austauschbarkeit in einfacher Weise auch eine Anpassung an unterschiedliche Faserspeisekanäle, die evtl. durch Austausch eines Spinnelementes notwendig werden könnten. Darüber hinaus wird mit Sicherheit vermieden, daß sich Fasern auf ihrem Weg zwischen dem Auflösewalzengehäuse und dem Spinnelement im Faserspeisekanal festsetzen können, so daß auch die Gefahr hierdurch bedingter Faseranhäufungen nicht mehr gegeben ist. Auf derartige Faseranhäufungen zurückzuführende Unregelmäßigkeiten im Faden oder Fadenbrüche werden somit vermieden. Trotzdem ist eine einwandfreie Abdichtung des Faserspeisekanals gegenüber der Außenluft sichergestellt, so daß auch der Fasertransport nicht beeinträchtigt wird.The device according to the invention is simple in construction and enables the insert to be replaced quickly if it becomes unusable due to wear. In addition, this quick and easy interchangeability also enables simple adaptation to different fiber feed channels, which could possibly be necessary by exchanging a spinning element. In addition, it is avoided with certainty that fibers can get stuck in the fiber feed channel on their way between the opening roller housing and the spinning element, so that there is also no longer any danger of fiber accumulations resulting from this. Irregularities in the thread or thread breaks due to such fiber accumulations are thus avoided. Nevertheless, a perfect seal of the fiber feed channel from the outside air is ensured, so that the fiber transport is not impaired.

Die Erfindung wird nachstehend anhand von Ausführungsbeispielen näher erläutert. Es zeigen:

Figur 1
eine erfindungsgemäß ausgebildete Offenend-Spinnvorrichtung im Schnitt;
Figur 2
im Schnitt im Detail eines erfindungsgemäßen Faserspeisekanals in abgewandelter Ausbildung; und
Figur 3
im Schnitt eine weitere Abwandlung des erfindungsgemäßen Faserspeisekanals.
The invention is explained in more detail below on the basis of exemplary embodiments. Show it:
Figure 1
an open-end spinning device designed according to the invention in section;
Figure 2
in section in detail of a fiber feed channel according to the invention in a modified design; and
Figure 3
on average, a further modification of the fiber feed channel according to the invention.

Die Erfindung wird nachstehend am Beispiel einer Spinnvorrichtung 1 erläutert, die als Spinnelement einen Spinnrotor 10 aufweist, doch läßt sie sich auch bei anderen Offenend-Spinnvorrichtungen, z.B. Friktions-Spinnvorrichtungen, anwenden.The invention is explained below using the example of a spinning device 1 which has a spinning rotor 10 as the spinning element, but it can also be used in other open-end spinning devices, e.g. Use friction spinning devices.

Der Spinnrotor 10 ist gemäß Fig. 1 in einem Gehäuse 11 drehbar angeordnet. Dieses ist durch einen Deckel 20 abdeckbar, der von einer schwenkbaren Abdeckung 2 getragen wird, welche die einzelnen Elemente der Spinnvorrichtung 1 abdeckt. Die Abdeckung 2 ist auf einer Schwenkachse 22 schwenkbar gelagert, so daß der Deckel 20 vom Gehäuse 11 weggeschwenkt werden kann. Der Deckel 20 nimmt ein Fadenabzugsrohr 21 sowie einen Teil eines Faserspeisekanals 3 auf, der nachstehend noch näher beschrieben wird.The spinning rotor 10 is rotatably arranged in a housing 11 according to FIG. 1. This can be covered by a cover 20, which is supported by a pivotable cover 2, which covers the individual elements of the spinning device 1. The cover 2 is pivotally mounted on a pivot axis 22 so that the cover 20 can be pivoted away from the housing 11. The cover 20 receives a thread take-off tube 21 and part of a fiber feed channel 3, which will be described in more detail below.

Wie Figur 1 zeigt, ist der Faserspeisekanal 3 in zwei Teilkanäle und 31 unterteilt, von denen der erste Teilkanal 30 in einem Einsatz 32 und der zweite Teilkanal 31 im Deckel 20 angeordnet ist. Der Einsatz 32 ist axial beweglich in einem Gehäuse 4 geführt, das eine antreibbare Auflösewalze 40 aufnimmt. Der Auflösewalze 40 ist eine Liefervorrichtung 41 vorgeschaltet, die beim gezeigten Ausführungsbeispiel in üblicher Weise eine antreibbare Lieferwalze 410 aufweist, mit welcher eine elastisch beaufschlagte Speisemulde 411 zusammenarbeitet.As FIG. 1 shows, the fiber feed channel 3 is divided into two subchannels and 31, of which the first subchannel 30 is arranged in an insert 32 and the second subchannel 31 in the cover 20. The insert 32 is guided in an axially movable manner in a housing 4 which receives a drivable opening roller 40. The opening roller 40 is connected upstream of a delivery device 41, which in the exemplary embodiment shown has a drivable delivery roller 410 in the usual way, with which an elastically loaded feed trough 411 cooperates.

Die einander zugewandten Stirnflächen der die beiden Teilkanäle 30 und 31 aufnehmenden Teile, d.h. die einander zugewandten Stirnflächen des Einsatzes 32 und des Deckels 20, sind als ununterbrochene glatte und ebene Dichtflächen 200 und 323 ausgebildet, so daß, wenn diese sich in gegenseitiger Anlage befinden, keine Fasern 50 zwischen diese Dichtflächen 200 und 323 gelangen können. Die Eintrittsmündung 310 des Teilkanals 31 ist darüber hinaus in üblicher Weise größer als die Austrittsmündung 300 des Teilkanals 30, so daß es auch keine in den Faserspeisekanal 3 hineinragende Kante gibt, an welcher Fasern 50 hängenbleiben könnten.The facing end faces of the parts receiving the two sub-channels 30 and 31, i.e. the facing end faces of the insert 32 and the cover 20 are designed as continuous smooth and flat sealing surfaces 200 and 323, so that when they are in mutual contact, no fibers 50 can get between these sealing surfaces 200 and 323. The inlet mouth 310 of the sub-channel 31 is also larger in the usual way than the outlet mouth 300 of the sub-channel 30, so that there is also no edge protruding into the fiber feed channel 3, on which fibers 50 could get caught.

Der Einsatz 32 besitzt eine zylindrische Außenkontur, die als Führungsfläche 322 ausgebildet ist, und ist im Gehäuse 4 mit radialem Spiel gelagert. Zu diesem Zweck besitzt das Gehäuse 4 eine zylinderförmigen Ausnehmung, die als Führungsfläche 42 für den Einsatz 32 ausgebildet ist.The insert 32 has a cylindrical outer contour, which is designed as a guide surface 322, and is mounted in the housing 4 with radial play. For this purpose, the housing 4 has a cylindrical recess which is designed as a guide surface 42 for the insert 32.

Das Gehäuse 4 ist mit einer als Auskleidung 43 ausgebildeten Blende versehen, welche die gesamte Innenmantelfläche des Gehäuses 4 überdeckt und lediglich im Bereich der Liefervorrichtung 41 eine Öffnung 430 und im Bereich des Faserspeisekanals 3 eine Öffnung 431 freiläßt. Die Öffnung 430 ermöglicht die Zuführung eines Faserbandes 5 zur Auflösewalze 40, während die Öffnung 431 einen Austritt von Fasern 50 aus dem Innenraum des Gehäuses 4 in den Faserspeisekanal 3 ermöglicht. Diese Auskleidung 43 überdeckt das der Auflösewalze 40 zugewandte Ende des Einsatzes 32 auf dessen stromabwärts (mit Bezugnahme auf den Pfeil P) gelegenen Seite. Auf der stromaufwärts gelegenen Seite wird der Teilkanal 30 ebenfalls etwas überdeckt und trennt damit eine Ausnehmung 44 vom Innenraum 45 ab, in welchem sich die Auflösewalze 40 befindet. Diese Ausnehmung 44 nimmt eine Stützfläche 325 auf, die sich an dem vom Teilkanal 31 am weitesten entfernten Ende des Einsatzes 32 befindet, sowie ein elastisches Element, z.B. in Form einer Druckfeder 440, das sich an dieser Stützfläche 325 und einer Wand der Ausnehmung 44 abstützt.The housing 4 is provided with a panel 43, which covers the entire inner surface of the housing 4 and only leaves an opening 430 in the area of the delivery device 41 and an opening 431 in the area of the fiber feed channel 3. The opening 430 enables a sliver 5 to be fed to the opening roller 40, while the opening 431 allows fibers 50 to exit from the interior of the housing 4 into the fiber feed channel 3. This lining 43 covers the end of the insert 32 facing the opening roller 40 on its downstream side (with reference to the arrow P). The subchannel 30 also becomes on the upstream side somewhat covers and thus separates a recess 44 from the interior 45, in which the opening roller 40 is located. This recess 44 receives a support surface 325, which is located at the most distant end of the insert 31 from the insert 32, and an elastic element, for example in the form of a compression spring 440, which is supported on this support surface 325 and a wall of the recess 44 .

In der gezeigten Stellung der Abdeckung 2 wird das Faserband 5 durch eine Öffnung 23 in der Abdeckung 2 der Liefervorrichtung 41 präsentiert, welche das Faserband 5 der Auflösewalze 40 zuführt. Die in Richtung des Pfeiles P rotierende Auflösewalze 40 kämmt aus dem voreilenden Ende des Faserbandes 5 Fasern 50 heraus, die in den Faserspeisekanal 3 und von dort aus in den Spinnrotor 10 gelangen, wo sie sich in einer Fasersammelrille ablegen und dort einen Faserring 51 bilden. Mit dem Faserring 51 steht das Ende eines Fadens 52 in Kontakt, der durch eine nicht gezeigte Abzugsvorrichtung fortlaufend abgezogen wird und dabei zur kontinuierlichen Bildung des Fadens 52 den Faserring 51 in sein Ende einbindet.In the position of the cover 2 shown, the sliver 5 is presented through an opening 23 in the cover 2 of the delivery device 41, which feeds the sliver 5 to the opening roller 40. The opening roller 40, which rotates in the direction of the arrow P, combs fibers 50 out of the leading end of the fiber sliver 5, which fibers enter the fiber feed channel 3 and from there into the spinning rotor 10, where they are deposited in a fiber collecting groove and form a fiber ring 51 there. The end of a thread 52 is in contact with the fiber ring 51, which is continuously drawn off by a pull-off device (not shown) and thereby integrates the fiber ring 51 into its end for the continuous formation of the thread 52.

Wenn ein Fadenbruch auftritt oder der Spinnvorgang aus einem anderen Grunde unterbrochen wird, so wird die Abdeckung 2 vom Gehäuse 11 weggeklappt. Dabei wird der Spinnrotor 10 zugänglich. Weiterhin gibt der im Deckel 20 befindliche Teilkanal 31 das der Auflösewalze 40 abgewandte Ende des Teilkanals 30 frei.If a thread break occurs or the spinning process is interrupted for another reason, the cover 2 is folded away from the housing 11. The spinning rotor 10 becomes accessible. Furthermore, the subchannel 31 located in the cover 20 releases the end of the subchannel 30 facing away from the opening roller 40.

Soll nach einem Stillstand der Spinnvorrichtung 1 diese wieder in Betrieb gesetzt werden, so wird zur Durchführung des Anspinnvorganges die Abdeckung 2 in bekannter Weise wieder in ihre in Figur 1 gezeigte Arbeitsstellung gebracht. Hierbei legt sich der Deckel 20 mit seiner Dichtfläche 200 an die Dichtfläche 323 des Einsatzes 32 an. Die beiden Teilkanäle 30 und 31 befinden sich wieder in Flucht zueinander, wobei der Einsatz 32 mit dem Teilkanal 30 durch das elastische Element (Druckfeder 440) in Anlage am Deckel 20 mit dem Teilkanal 31 gehalten wird.If the spinning device 1 is to be put into operation again after it has come to a standstill, the piecing process is carried out the cover 2 is brought back to its working position shown in FIG. 1 in a known manner. Here, the cover 20 rests with its sealing surface 200 on the sealing surface 323 of the insert 32. The two subchannels 30 and 31 are again in alignment with one another, the insert 32 with the subchannel 30 being held in contact with the cover 20 with the subchannel 31 by the elastic element (compression spring 440).

Wie Figur 1 zeigt, ist der Einsatz 32 axial beweglich im Gehäuse 4 gelagert und durch das elastische Element (Druckfeder 440) in Richtung zum Deckel 20 mit dem zweiten Teilkanal 31 beaufschlagt. Das der Auflösewalze 40 zugewandte Stirnende des Einsatzes 32 ist - wie erwähnt - zumindestens auf seiner stromabwärts gelegenen Seite (siehe durch Pfeil P gekennzeichnete Transportrichtung) durch die Blende 43 abgedeckt, so daß auch dann, wenn der Einsatz 32 etwas von der Auflösewalze 40 entfernt wird, keine Fasern 50 in den Spalt 324 zwischen Einsatz 32 und Blende 43 gelangen können. Auch die Druckfeder 440 ist durch die Blende 43 abgeschirmt, so daß sich auch hier keine Fasern 50 festsetzen können.As FIG. 1 shows, the insert 32 is mounted in the housing 4 such that it can move axially and the second subchannel 31 is acted upon by the elastic element (compression spring 440) in the direction of the cover 20. The front end of the insert 32 facing the opening roller 40 is - as mentioned - at least on its downstream side (see arrow P marked transport direction) covered by the aperture 43, so that even if the insert 32 is somewhat removed from the opening roller 40 , no fibers 50 can get into the gap 324 between insert 32 and aperture 43. The compression spring 440 is also shielded by the aperture 43, so that no fibers 50 can get stuck here either.

Aufgrund des radialen Spieles zwischen den Führungsflächen 42 und 322 kann sich der Einsatz 32 in seiner Position so an den Deckel 20 anpassen, daß die einander zugewandten Dichtflächen 200 und 323 des den Teilkanal 30 aufnehmenden Einsatzes 32 und des den Teilkanal 31 aufnehmenden Deckels 20 dichtend aneinander anlegen.Due to the radial play between the guide surfaces 42 and 322, the insert 32 can adjust its position to the cover 20 in such a way that the mutually facing sealing surfaces 200 and 323 of the insert 32 receiving the sub-channel 30 and the cover 20 receiving the sub-channel 31 seal against one another invest.

Die Dichtflächen 200 und 323 können in unterschiedlicher Weise ausgebildet sein; es darf lediglich keinen Spalt zwischen ihnen geben im Bereich des Übergangs vom Teilkanal 30 zum Teilkanal 31.The sealing surfaces 200 and 323 can be designed in different ways; there must simply be no gap between them in the region of the transition from subchannel 30 to subchannel 31.

Die Dichtflächen 200 und 323 können jedoch auch anders, z.B. als Labyrinthdichtung, ausgebildet sein, wobei aber auch hier ein Spalt auf ihrer radial innenliegenden Seite vermieden werden muß.However, the sealing surfaces 200 and 323 can also be different, e.g. be designed as a labyrinth seal, but here too a gap on its radially inner side must be avoided.

Bei entsprechender Orientierung der einander zugewandten Dichtflächen 200 und 323 und entsprechender Anordnung der Schwenkachse 22 der Abdeckung 2 kann es genügen, wenn der Einsatz 32 lediglich in axialer Richtung beweglich geführt wird.With a corresponding orientation of the mutually facing sealing surfaces 200 and 323 and a corresponding arrangement of the pivot axis 22 of the cover 2, it may be sufficient if the insert 32 is only guided so as to be movable in the axial direction.

Die beschriebene Vorrichtung kann in vielfältiger Weise abgewandelt werden, insbesondere durch Ersatz einzelner Merkmale durch Äquivalente oder durch andere Kombinationen der beschriebenen Merkmale. So ist es nicht erforderlich, daß - wie in Figur 1 gezeigt - das elastische Element als Druckfeder 440 ausgebildet und an dem Ende des Einsatzes 32 angeordnet ist, das vom zweiten Teilkanal 31 am weitesten entfernt ist. Gemäß dem in Figur 2 gezeigten Ausführungsbeispiel weist der Einsatz 32 außerhalb des Gehäuses 4 eine Radialfläche 320 auf, die dem Gehäuse 4 zugewandt ist. Das Gehäuse besitzt eine ähnliche Radialfläche 46, die der Radialfläche 320 des Einsatzes 32 gegenüberliegt. Zwischen diesen beiden Radialfläche befindet sich ein Federring 460. Weiterhin ist zwischen den zylindrischen Führungsflächen 322 und 42 eine als Dichtring 6 ausgebildete Dichtung vorgesehen, die in üblicher Weise durch eine Nut 422 axial' gesichert ist. Der Dichtring 6 kann natürlich auch, falls gewünscht, statt dessen in einer nicht gezeigten Umfangsnut des Einsatzes 32 angeordnet sein.The described device can be modified in a variety of ways, in particular by replacing individual features with equivalents or through other combinations of the described features. It is therefore not necessary that, as shown in FIG. 1, the elastic element is designed as a compression spring 440 and is arranged at the end of the insert 32 which is furthest away from the second subchannel 31. According to the exemplary embodiment shown in FIG. 2, the insert 32 has a radial surface 320 outside the housing 4, which faces the housing 4. The housing has a similar radial surface 46 that is opposite the radial surface 320 of the insert 32. A spring ring 460 is located between these two radial surfaces. Furthermore, a seal designed as a sealing ring 6 is provided between the cylindrical guide surfaces 322 and 42 and is axially secured in the usual way by a groove 422. If desired, the sealing ring 6 can of course also be arranged in a circumferential groove (not shown) of the insert 32 instead.

Die Funktion der in Figur 2 gezeigten Vorrichtung entspricht jener gemäß Figur 1. Durch den Dichtring 6 ist der Einsatz 32 gegenüber dem Gehäuse 4 an seinem Umfang abgedichtet, so daß hier keine Falschluft eindringen kann. Es entsteht somit an dieser Stelle eine strömungsneutrale Zone aufgrund der Abdichtung zwischen Einsatz 32 und Gehäuse 4 mit Hilfe des Dichtringes 6. Die Folge hiervon ist, daß nicht nur durch die Abdeckung des Spaltes 324 zwischen Einsatz 32 und Blende 43, sondern auch aufgrund dieser strömungsneutralen Zone ein Hängenbleiben von Fasern vermieden wird.The function of the device shown in Figure 2 corresponds to that of Figure 1. The sealing ring 6, the insert 32 is sealed against the housing 4 on its circumference, so that no false air can penetrate here. This creates a flow-neutral zone at this point due to the seal between the insert 32 and the housing 4 with the help of the sealing ring 6. The consequence of this is that not only by covering the gap 324 between the insert 32 and the orifice 43, but also because of this flow-neutral Zone of sticking of fibers is avoided.

Falls gewünscht und die axiale Beweglichkeit des Einsatzes 32 hierdurch nicht beeinträchtigt wird, kann der eine Radialdichtung bildende Dichtring 6 evtl. durch einen weiteren Dichtring (nicht gezeigt) ergänzt werden, wobei der Einsatz 32 lediglich eine äußerst geringe radiale Bewegung ausführen kann.If desired and the axial mobility of the insert 32 is not impaired thereby, the sealing ring 6 forming a radial seal can possibly be supplemented by a further sealing ring (not shown), the insert 32 being able to carry out only an extremely slight radial movement.

In Figur 3 ist eine weitere Abwandlung der erfindungsgemäßen Vorrichtung gezeigt, wobei wiederum der Einsatz 32 eine Radialfläche 320 und das Gehäuse 4 eine Radialfläche 46 aufweisen. In diesem Fall ist eine Dichtung 60 vorgesehen, die einerseits eine radiale Abdichtung zwischen Gehäuse 4 und 32 bewirkt und andererseits gleichzeitig als elastisches Element ausgebildet ist, durch welches der Einsatz 32 in axialer Richtung beaufschlagt ist und in Richtung zum Teilkanal 31 gedrückt wird. Durch diese Konstruktion ergibt sich prinzipiell dieselbe Funktion wie bei den zuvor mit Hilfe der Fig. 1 und 2 beschriebenen Ausführungen. Durch die Dichtung 6 bzw. 60 wird der Einsatz 32 im Gehäuse 4 so geführt, daß die Gefahr einer Verstellung durch Drehen weitgehend verhindert wird. Dies ist insbesondere dann der Fall, wenn die Dichtflächen 200 und 323 lotrecht zur Längsachse des Einsatzes 32 orientiert sind, da hierdurch in jeder Drehstellung des Einsatzes 32 die Abdichtwirkung in gleicher Weise gewährleistet ist.FIG. 3 shows a further modification of the device according to the invention, the insert 32 again having a radial surface 320 and the housing 4 having a radial surface 46. In this case, a seal 60 is provided, which on the one hand brings about a radial seal between the housing 4 and 32 and, on the other hand, is designed at the same time as an elastic element, through which the insert 32 is acted upon in the axial direction and is pressed in the direction of the subchannel 31. In principle, this construction results in the same function as in the embodiments previously described with the aid of FIGS. 1 and 2. Through the seal 6 or 60, the insert 32 is guided in the housing 4 so that the risk of adjustment by turning is largely prevented. This is particularly the case when the sealing surfaces 200 and 323 are oriented perpendicular to the longitudinal axis of the insert 32, since this ensures the sealing effect in the same way in every rotational position of the insert 32.

Um ein Drehen jedoch gänzlich auszuschließen, was insbesondere im Hinblick auf den Eintritt vom Innenraum 45 des Gehäuses 4 in den Teilkanal 30 von Bedeutung ist, kann dem Einsatz 32 eine Drehsicherung 7 zugeordnet sein. Die Drehsicherung 7 kann z.B. dadurch gebildet werden, daß der Einsatz 32 und das Gehäuse 4 von der Kreisform abweichende, zusammenarbeitende Führungsflächen aufweisen. Zu diesem Zweck wird gemäß Figur 1 die Drehsicherung 7 durch die zusammenarbeitenden Flächen von Einsatz 32 und Auskleidung 43 gebildet. Durch das Auflegen des Deckels 20 auf den Einsatz 32 wird der Einsatz 32 gegen die Wirkung des elastischen Elementes (z.B. Druckfeder 440, hydraulischer Kolben etc.) in Richtung Auflösewalze 40 gedrückt, wobei der Einsatz 32, falls er sich etwas verdreht haben sollte, durch die Blende 43 wieder in die richtige Drehstellung zurückgedreht wird.However, in order to completely prevent rotation, which is particularly important with regard to the entry from the interior 45 of the housing 4 into the subchannel 30, the insert 32 can be assigned a rotation lock 7. The rotation lock 7 can e.g. are formed in that the insert 32 and the housing 4 have cooperating guide surfaces which deviate from the circular shape. For this purpose, according to FIG. 1, the anti-rotation device 7 is formed by the cooperating surfaces of insert 32 and lining 43. By placing the cover 20 on the insert 32, the insert 32 is pressed against the action of the elastic element (eg compression spring 440, hydraulic piston, etc.) in the direction of the opening roller 40, the insert 32, if it should have twisted somewhat, through the aperture 43 is turned back into the correct rotational position.

Es kann u.U. auch eine Axialnut vorgesehen sein, in welche eine radial vorspringende Nase hineinragt, so daß sie in dieser Axialnut geführt wird (nicht gezeigt), wobei es vom Prinzip her keine Rolle spielt, ob die Axialnut im Gehäuse und die Nase am Einsatz befindet oder ob die Anordnung umgekehrt ist. Es ist hierbei jedoch darauf zu achten, daß die Abdichtwirkung hierdurch nicht beeinträchtigt wird. Ist der Einsatz 32 gegen Drehung gesichert, so nimmt er immer seine optimale Position gegenüber dem Deckel 20 mit dem Teilkanal 31 ein, wodurch eine einwandfreie Abdichtung am Übergang vom Teilkanal 30 in den Teilkanal 31 gewährleistet ist.An axial groove may also be provided, into which a radially projecting nose protrudes, so that it is guided in this axial groove (not shown), although it does not matter in principle whether the axial groove is in the housing and the nose is on the insert or whether the order is reversed. However, care must be taken to ensure that the sealing effect is not impaired by this. If the insert 32 is secured against rotation, then it always assumes its optimal position with respect to the cover 20 with the sub-channel 31, which ensures a perfect seal at the transition from the sub-channel 30 to the sub-channel 31.

Die Blende 43 muß nicht unbedingt als eine sich über den gesamten Innenumfang des Gehäuses 4 erstreckende Gehäuseauskleidung ausgebildet sein. Es genügt, wenn diese sich lediglich über den gefährdeten Bereich des Einsatzes 32 erstreckt. Je nach Ausbildung des Einsatzes 32 braucht die Blende 43 stromaufwärts vom Speisekanal 3 den Einsatz 32 nicht oder nur teilweise abzudecken.The aperture 43 does not necessarily have to be designed as a housing lining which extends over the entire inner circumference of the housing 4. It is sufficient if it only extends over the endangered area of the insert 32. Depending on the design of the insert 32, the orifice 43 upstream of the feed channel 3 need not or only partially cover the insert 32.

Es ist auch möglich, die Blende durch ein Stück des Gehäuses 4 selber zu bilden. Gemäß Figur 2 erstreckt sich dieses Gehäusestück bis in den Einsatz 32 hinein. Dieser endet auf seiner der Auflösewalze 40 zugewandten Ende in einer Ringnut 47, von welcher aus düsenförmig ein Rohrstutzen 470 in das Innere des Einsatzes 32 hineinragt, der auf diese Weise die Blende bildet und ihre Funktion erfüllt.It is also possible to form the diaphragm by a piece of the housing 4 itself. According to FIG. 2, this housing piece extends into the insert 32. This ends on its end facing the opening roller 40 in an annular groove 47, from which a pipe socket 470 protrudes into the interior of the insert 32, which in this way forms the diaphragm and fulfills its function.

Um einen größeren Durchmessersprung am freien Ende des Rohrstutzens 470 zu vermeiden, können der Einsatz 32 auflösewalzenseitig auf seiner Innenseite eine konische Erweiterung 321 und der Rohrstutzen 470 einsatzseitig an seinem Außenumfang eine konische Verjüngung 471 aufweisen.In order to avoid a larger jump in diameter at the free end of the pipe socket 470, the insert 32 on the opening roller side can have a conical widening 321 on its inside and the pipe socket 470 on the insert side on its outer circumference have a conical taper 471.

Aufgrund der geschilderten Anordnung wird ebenfalls sichergestellt, daß sich Fasern 50 beim Übergang in den Teilkanal 30 nicht festsetzen und dann irgendwann als Faserbatzen lösen und in den Spinnrotor 10 gelangen können.Due to the arrangement described, it is also ensured that fibers 50 do not become stuck during the transition into the subchannel 30 and then at some point can detach as fiber chunks and get into the spinning rotor 10.

Es versteht sich, daß bei Ausbildung einer Blende in Form eines in den Einsatz hineinragenden Rohrstutzens 470 das den Einsatz 32 beaufschlagende elastische Element (in Form einer Schraubenfeder oder auch als Federring) in der Ringnut 47 angeordnet sein kann.It goes without saying that when a diaphragm in the form of a pipe socket 470 projecting into the insert, the elastic element acting on the insert 32 (in the form of a coil spring or also as a spring ring) can be arranged in the annular groove 47.

Claims (11)

  1. Open-end spinning apparatus with a spinning element, a housing (4) for a rotable opening cylinder (40) and a fibre feed channel extending from the housing to the spinning element (10) and comprising two channel sections (30, 31) which can be moved relative to each other and can be brought into alignment with each other, characterized by an insert (32) guided axially movably in the housing (4), said insert forming the first channel section (30) and being made to bear against the second channel section (31) by an elastic element (440, 460, 60) when the channel sections (30, 31) are brought into alignment with each other, said insert being covered by a screen (43, 470) at its end facing the interior of the hcusing (4), at least on the downstream side - in relation to the direction of rotation (P) of the opening cylinder (4).
  2. Apparatus according to Claim 1, characterized in that a seal (6, 60) is arranged between insert (32) and housing (4).
  3. Apparatus according to Claim 2, characterized in that the insert (32) is guided radially movably in the housing (4) and in that the seal is in the form of a radial seal (6).
  4. Apparatus according to Claim 2 or 3, characterized in that the insert (32) and the housing (4) have cylindrical guiding surfaces (322, 42) through which the insert (32) is guided with some clearance, the seal (6) being arranged between these guiding surfaces (322, 42).
  5. Apparatus according to Claim 2 or 3, characterized in that the insert (32) on its end facing the second channel section (31) outside the housing (4) has a radial surface (320) facing the housing (4) and in that the elastic element is made in the form of a spring washer (460) arranged between the radial surface (320) of the insert (32) and a radial surface (46) of the housing (4).
  6. Apparatus according to one or more of Claims 1 to 5, characterized in that the mutually facing end surfaces of the channel sections (30, 31) are in the form of uninterrupted smooth sealing surfaces (200, 323).
  7. Apparatus according to one or more of Claims 1 to 6, characterized in that the insert (32) has a supporting surface (325) for the elastic element (450) at its end furthest from the second channel section (31).
  8. Apparatus according to Claim 1, characterized in that the insert (32) outside the housing (4) has a radial surface (320) facing the housing (4) and in that the elastic element is formed by a seal (60) which is arranged between the radial surface of the insert and a radial surface (46) of the housing (4).
  9. Apparatus according to one or more of Claims 1 to 8, characterized in that the housing (4) has an anti-rotation means (7) for the insert (32).
  10. Apparatus according to one or more of Claims 1 to 9, characterized in that the screen (43) is made in the form of a liner which covers at least part of the interior wall of the housing (4).
  11. Apparatus according to one or more of Claims 1 to 10, characterized in that the screen (43) is formed by a part of the housing (4) extending right into the insert (32).
EP90110554A 1989-07-13 1990-06-01 Open-end spinning device Expired - Lifetime EP0407732B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3923060A DE3923060A1 (en) 1989-07-13 1989-07-13 OPEN-END SPIDER
DE3923060 1989-07-13

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Publication Number Publication Date
EP0407732A1 EP0407732A1 (en) 1991-01-16
EP0407732B1 true EP0407732B1 (en) 1993-12-22

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DE (2) DE3923060A1 (en)

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Also Published As

Publication number Publication date
US5111651A (en) 1992-05-12
EP0407732A1 (en) 1991-01-16
DE3923060A1 (en) 1991-01-24
DE59003942D1 (en) 1994-02-03

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