EP0654551B1 - Open-end spinning device - Google Patents

Open-end spinning device Download PDF

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Publication number
EP0654551B1
EP0654551B1 EP94111032A EP94111032A EP0654551B1 EP 0654551 B1 EP0654551 B1 EP 0654551B1 EP 94111032 A EP94111032 A EP 94111032A EP 94111032 A EP94111032 A EP 94111032A EP 0654551 B1 EP0654551 B1 EP 0654551B1
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EP
European Patent Office
Prior art keywords
cover
cover element
extension
bore
bearing surface
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
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EP94111032A
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German (de)
French (fr)
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EP0654551A2 (en
EP0654551A3 (en
Inventor
Heinz-Georg Wassenhoven
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
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Publication of EP0654551A2 publication Critical patent/EP0654551A2/en
Publication of EP0654551A3 publication Critical patent/EP0654551A3/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
    • 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

Definitions

  • the invention relates to an open-end spinning device with an aspirated rotor housing which is open to the front, a spinning rotor which rotates at high speed within the rotor housing and a cover element for closing the rotor housing, an exchangeable cover extension having the mouth region of a fiber guide channel and a thread take-off nozzle being arranged on the cover element .
  • OE spinning devices constructed in this way are known, for example, from DE 36 36 182 A1.
  • the rotor housing which is open to the front, is closed airtight during the spinning process by a cover element which is fastened to the swivel housing of the spinning device.
  • the cover element is screwed from the inside against the swivel housing.
  • a sliver opening device with a sliver feed roller, a opening roller and parts of a fiber guide channel is arranged in the swivel housing. The arrangement of the rotating parts is such that they are taken out of operation or braked when the spinning device is opened.
  • the cover element During operation, that is to say when the swivel housing is closed and locked in place, the cover element lies against the rotor housing with an annular lip seal and closes this airtight.
  • the cover element extends into the rotating rotor with a cover extension, which, among other things, has the opening area of the fiber guide channel. This ensures that the mouth region of the fiber guide channel is positioned sufficiently close to the fiber sliding wall of the spinning rotor and that the individual fibers transported in the fiber channel are fed to the spinning rotor in accordance with regulations.
  • the cover elements also referred to as fiber channel plates, have an outer annular groove for a lip element and a central cover extension.
  • a threaded bore for attaching a fiber withdrawal nozzle is arranged in the lid extension.
  • the invention is based on the object of developing a cover for a rotor housing which can be manufactured inexpensively and is reliable in operation.
  • the sealing surfaces arranged inclined with respect to the direction of installation of the lid extension, in conjunction with axially acting fastening means, offer the advantage that an airtight connection of the fiber channel parts is ensured in the fiber channel transition area.
  • the detachable arrangement of the lid extension within the recess of the lid element also offers the advantage that when changing the yarn section or the like, it is not the entire lid element that has to be changed, but only the lid extension.
  • a cylindrical pin is provided as a fitting means, which is let into a fitting hole in the cover element, fits into a corresponding fitting hole of the cover extension and thereby ensures the functional installation position of the cover extension. Due to this exact, angularly accurate alignment of the lid extension, it is ensured that within the fiber guide channel, in particular at the transition point from the lid element to the lid extension, there are no approaches which impair fiber transport.
  • the lid extension is designed as a rotationally symmetrical component with a rear, conical contact surface.
  • Such an embodiment is particularly favorable in terms of production technology.
  • the fixing of the lid extension within the receptacle widening in the direction of the rotor housing takes place by means of fastening means which are effective in the axial direction, for example by means of screw bolts. These bolts pass through the cover element from the outside and, when they are turned, pull the corresponding contact surfaces against each other in the area of the fiber guide channel transition, so that there is an airtight contact.
  • the lid extension has a central through hole for receiving a thread take-off nozzle.
  • An angled threaded hole opens into this through hole, which receives a threaded pin for fixing the thread take-off nozzle.
  • An extension opening is preferably provided in the extension of this threaded hole in the area of the cover element. which allows a tool to access the threaded pin. Using a suitable tool, for example a screwdriver, it is possible to change the thread take-off nozzle even when the lid extension is still installed.
  • the OE spinning device 1 shown in FIG. 1 has a rotor housing 2 in which a spinning rotor 3 rotates at high speed.
  • the spinning rotor 3 is supported on a support disk bearing 4 and is driven by a tangential belt 5.
  • the rotor housing 2 which is open at the front, is connected to a suction device 6 and is closed at the front during operation by a cover element 7 which is pivotably mounted about a pivot axis 16.
  • the cover element 7 has a sliver opening device 8 an opening roller 9, a sliver feed roller 10, not shown, and part of the fiber guide channel 11.
  • the opening roller 9 is preferably driven by a tangential belt 12.
  • the sliver feed roller 10 is driven either via a machine-long drive shaft or via an electric individual drive 15.
  • the cover element 7 has an annular groove 32 for inserting a lip sealing element 17 and a receptacle 33 which is open in the direction of the rotor housing and has conical contact surfaces 34.
  • a cover extension 18 is fixed by means of screw bolts 21, which pass through corresponding through bores in the cover element 7, in fastening bores 30 of the cover extension 18.
  • the exact position fixing of the lid extension 18 within the receptacle 33, in particular the precise alignment of the lid extension takes place via a cylindrical pin 26 which, inserted into a fitting bore 35 of the lid element 7, engages in a corresponding fitting bore 25 on the rear side 36 of the lid extension 18.
  • the cover extension 18 which is aligned by means of the cylindrical pin 26 with its conical contact surface 31, lies against the correspondingly shaped contact surface 34 of the receptacle 33 and is thereby subjected to a holding force acting in the axial direction via the fastening bolts 21.
  • the lid extension 18 also has a central through bore 24 for receiving a thread take-off nozzle 19.
  • a threaded bore 27 opens into this through bore 24 at an angle.
  • An extension of this threaded bore 27 is In the cover element 7, a connection bore or mounting opening, not shown, is provided, which enables a tool to access a threaded pin 28 arranged in the threaded bore 27. Since the threaded pin 28, which fixes the thread take-off nozzle 19 in the through hole 24, is accessible from the outside, the thread take-off nozzle 19 can also be changed while the cover extension 18 is installed in the cover element 7.
  • both the threaded bore 27 and the fiber guide channel section 37 are inserted orthogonally or almost orthogonally into the conical contact surface 31 of the lid extension 18.

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

Description

Die Erfindung betrifft eine Offenend-Spinnvorrichtung mit einem besaugten, nach vorne offenen Rotorgehäuse, einem innerhalb des Rotorgehäuses mit hoher Drehzahl umlaufenden Spinnrotor sowie einem Deckelelement zum Verschließen des Rotorgehäuses, wobei am Deckelelement ein den Mündungsbereich eines Faserleitkanals und eine Fadenabzugsdüse aufweisender, auswechselbarer Deckelfortsatz angeordnet ist.The invention relates to an open-end spinning device with an aspirated rotor housing which is open to the front, a spinning rotor which rotates at high speed within the rotor housing and a cover element for closing the rotor housing, an exchangeable cover extension having the mouth region of a fiber guide channel and a thread take-off nozzle being arranged on the cover element .

Derartig aufgebaute OE-Spinnvorrichtungen sind beispielsweise durch die DE 36 36 182 A1 bekannt.OE spinning devices constructed in this way are known, for example, from DE 36 36 182 A1.

Bei solchen Spinnvorrichtungen wird das nach vorne offene Rotorgehäuse während des Spinnprozesses durch ein Deckelelement luftdicht verschlossen, das am Schwenkgehäuse der Spinnvorrichtung befestigt ist. Das Deckelelement ist von innen gegen das Schwenkgehäuse geschraubt. Im Schwenkgehäuse ist außerdem eine Faserbandauflöseeinrichtung mit einer Faserbandeinzugswalze, einer Auflösewalze und Teile eines Faserleitkanales angeordnet. Die Anordnung der umlaufenden Teile ist dabei so getroffen, daß sie beim Öffnen der Spinnvorrichtung außer Betrieb genommen beziehungsweise abgebremst werden.In such spinning devices, the rotor housing, which is open to the front, is closed airtight during the spinning process by a cover element which is fastened to the swivel housing of the spinning device. The cover element is screwed from the inside against the swivel housing. In addition, a sliver opening device with a sliver feed roller, a opening roller and parts of a fiber guide channel is arranged in the swivel housing. The arrangement of the rotating parts is such that they are taken out of operation or braked when the spinning device is opened.

Während des Betriebes, das heißt, bei zugeklapptem, eingerastetem Schwenkgehäuse liegt das Deckelelement mit einer ringförmigen Lippendichtung am Rotorgehäuse an und verschließt dieses luftdicht. Das Deckelelement reicht dabei mit einem Deckelfortsatz, der unter anderem den Mündungsbereich des Faserleitkanales aufweist, in den umlaufenden Rotor. Auf diese Weise ist gewährleistet, daß der Mündungsbereich des Faserleitkanales ausreichend nahe an der Fasergleitwand des Spinnrotors positioniert ist und die im Faserkanal herantransportierten Einzelfasern vorschriftsmäßig auf den Spinnrotor aufgespeist werden.During operation, that is to say when the swivel housing is closed and locked in place, the cover element lies against the rotor housing with an annular lip seal and closes this airtight. The cover element extends into the rotating rotor with a cover extension, which, among other things, has the opening area of the fiber guide channel. This ensures that the mouth region of the fiber guide channel is positioned sufficiently close to the fiber sliding wall of the spinning rotor and that the individual fibers transported in the fiber channel are fed to the spinning rotor in accordance with regulations.

Wie beispielsweise aus der DE 37 05 479 A1 ersichtlich, weisen die auch als Faserkanalplatten bezeichneten Deckelelemente eine äußere Ringnut für ein Lippenelement sowie einen zentralen Deckelfortsatz auf. Im Deckelfortsatz ist neben dem Mündungsbereich des Faserleitkanales auch eine Gewindebohrung zum Befestigen einer Faserabzugsdüse angeordnet. Diese Deckelelemente, die in der Regel als Spritzgußteile gefertigt sind, haben sich in der Praxis zwar bewährt, sind in ihrer Fertigung allerdings relative aufwendig.As can be seen, for example, from DE 37 05 479 A1, the cover elements, also referred to as fiber channel plates, have an outer annular groove for a lip element and a central cover extension. In addition to the opening area of the fiber guide channel, a threaded bore for attaching a fiber withdrawal nozzle is arranged in the lid extension. These cover elements, which are usually manufactured as injection molded parts, have proven themselves in practice, but are relatively expensive to manufacture.

Da diese Faserkanalplatten, insbesondere die Deckelfortsätze auf einen bestimmten Rotordurchmesser abgestimmt sind, müssen, wenn zum Beispiel im Zuge eines Garnpartiewechsels ein Austausch der Spinnrotoren notwendig wird, oft auch die Deckelelemente mit ausgetauscht werden.Since these fiber channel plates, in particular the cover extensions, are matched to a specific rotor diameter, the cover elements often have to be exchanged if, for example, an exchange of the spinning rotors becomes necessary in the course of a yarn section change.

Es sind in der Vergangenheit verschiedene Versuche unternommen worden, den Einsatzbereich solcher Deckelelemente zu vergrößern beziehungsweise deren konstruktiven Aufbau zu vereinfachen. Die bislang bekannten Einrichtungen konnten sich jedoch in der Praxis nicht durchsetzen.Various attempts have been made in the past to enlarge the area of use of such cover elements or to simplify their construction. However, the previously known facilities could not prevail in practice.

Durch das deutsche GM 78 20 853 ist es beispielsweise bekannt, ein Adapterstück einzusetzen, das bei Bedarf auf den Deckelfortsatz aufgeschoben werden kann. Auf diese Weise soll es ermöglicht werden, die erforderlichen Spinngeometrien, insbesondere den Abstand Faserleitkanalmündung/Fasergleitfläche auch bei einem Wechsel auf einen größeren Spinnrotor einzuhalten.From the German GM 78 20 853 it is known, for example, to use an adapter piece that can be pushed onto the lid extension if necessary. In this way it should be possible to achieve the required spinning geometries, in particular to maintain the distance between the fiber channel opening and the fiber sliding surface even when changing to a larger spinning rotor.

Es ist durch die DE-AS 21 30 582 und FR-A-2 195 713 weiter bekannt, das Rotorgehäuse durch ein Deckelelement zu verschließen, das über eine mittige Ausnehmung zur Aufnahme eines zylindrischen, kolbenartigen Einsatzteiles verfügt. Dieses Einsatzteil, das den Mündungsbereich des Faserleitkanales sowie einen zentralen Fadenabzugskanal aufweist, ist innerhalb dieser Ausnehmung durch eine radial angreifende Klemmschraube gehalten. Die konstruktive Ausbildung dieses zylindrischen Einsatzteiles ist allerdings nicht geeignet, eine zuverlässige Abdichtung des Rotorgehäuses zu gewährleisten.It is also known from DE-AS 21 30 582 and FR-A-2 195 713 to close the rotor housing by means of a cover element which has a central recess for receiving a cylindrical, piston-like insert part. This insert, which has the mouth area of the fiber guide channel and a central thread take-off channel, is held within this recess by a radially acting clamping screw. The design of this cylindrical insert is not suitable to ensure a reliable seal of the rotor housing.

Der Erfindung liegt ausgehend vom vorgenannten Stand der Technik die Aufgabe zugrunde, eine Abdeckung für ein Rotorgehäuse zu entwickeln, die kostengünstig zu fertigen und im Betrieb funktionssicher ist.On the basis of the aforementioned prior art, the invention is based on the object of developing a cover for a rotor housing which can be manufactured inexpensively and is reliable in operation.

Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung gelöst, wie sie Gegenstand des Anspruches 1 ist.This object is achieved according to the invention by a device as is the subject of claim 1.

Die bezüglich der Einbaurichtung des Deckelfortsatzes geneigt angeordneten Dichtflächen bieten in Verbindung mit axial wirkenden Befestigungsmitteln den Vorteil, daß im Faserkanalübergangsbereich ein luftdichter Anschluß der Faserkanalteile gewährleistet ist. Die lösbare Anordnung des Deckelfortsatzes innerhalb der Ausnehmung des Deckelelementes bietet außerdem den Vorteil, daß bei einem Garnpartienwechsel oder dergleichen nicht das gesamte Deckelelement, sondern nur der Deckelfortsatz gewechselt werden muß.The sealing surfaces arranged inclined with respect to the direction of installation of the lid extension, in conjunction with axially acting fastening means, offer the advantage that an airtight connection of the fiber channel parts is ensured in the fiber channel transition area. The detachable arrangement of the lid extension within the recess of the lid element also offers the advantage that when changing the yarn section or the like, it is not the entire lid element that has to be changed, but only the lid extension.

In bevorzugter Ausführungsform ist als Paßmittel ein Zylinderstift vorgesehen, der in eine Paßbohrung im Deckelelement eingelassen, in eine entsprechende Paßbohrung des Deckelfortsatzes faßt und dadurch die funktionsgerechte Einbaulage des Deckelfortsatzes gewahrleistet. Aufgrund dieser exakten, winkelgenauen Ausrichtung des Deckelfortsatzes ist sichergestellt, daß innerhalb des Faserleitkanales, insbesondere an der Übergangsstelle vom Deckelelement auf den Deckelfortsatz, keine den Fasertransport beeinträchtigenden Ansätze auftreten.In a preferred embodiment, a cylindrical pin is provided as a fitting means, which is let into a fitting hole in the cover element, fits into a corresponding fitting hole of the cover extension and thereby ensures the functional installation position of the cover extension. Due to this exact, angularly accurate alignment of the lid extension, it is ensured that within the fiber guide channel, in particular at the transition point from the lid element to the lid extension, there are no approaches which impair fiber transport.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß der Deckelfortsatz als rotationssymmetrisches Bauteil mit einer rückwärtigen, konischen Anlagefläche ausgebildet ist. Eine solche Ausführungsform ist insbesonders fertigungstechnisch sehr günstig. Es ist allerdings auch möglich, den Deckelfortsatz als pyramidenstumpfartiges Bauteil zu fertigen. In diesem Fall weist der Deckelfortsatz ebene Anlageflächen auf.In a further embodiment of the invention it is provided that the lid extension is designed as a rotationally symmetrical component with a rear, conical contact surface. Such an embodiment is particularly favorable in terms of production technology. However, it is also possible to manufacture the lid extension as a truncated pyramid-like component. In this case, the lid extension has flat contact surfaces.

Die Festlegung des Deckelfortsatzes innerhalb der sich in Richtung Rotorgehäuse weitenden Aufnahme erfolgt durch in axialer Richtung wirksame Befestigungsmittel, beispielsweise durch Schraubbolzen. Diese Schraubbolzen durchgreifen das Deckelelement von außen und ziehen, wenn sie angedreht werden, die korrespondierenden Anlageflächen im Bereich des Faserleitkanalüberganges gegeneinander, so daß es zu einer luftdichten Anlage kommt.The fixing of the lid extension within the receptacle widening in the direction of the rotor housing takes place by means of fastening means which are effective in the axial direction, for example by means of screw bolts. These bolts pass through the cover element from the outside and, when they are turned, pull the corresponding contact surfaces against each other in the area of the fiber guide channel transition, so that there is an airtight contact.

Der Deckelfortsatz weist eine zentrale Durchgangsbohrung zur Aufnahme einer Fadenabzugsdüse auf. In diese Durchgangsbohrung mündet eine winklig angeordnete Gewindebohrung, die einen Gewindestift zum Festlegen der Fadenabzugsdüse aufnimmt. Vorzugsweise ist in Verlängerung dieser Gewindebohrung, im Bereich des Deckelelementes, eine Montageöffnung vorgesehen, die den Zugriff eines Werkzeuges auf den Gewindestift gestattet. Mittels eines geeigneten Werkzeuges, zum Beispiel eines Schraubendrehers, ist es damit möglich, die Fadenabzugsdüse auch dann zu wechseln, wenn der Deckelfortsatz noch eingebaut ist.The lid extension has a central through hole for receiving a thread take-off nozzle. An angled threaded hole opens into this through hole, which receives a threaded pin for fixing the thread take-off nozzle. An extension opening is preferably provided in the extension of this threaded hole in the area of the cover element. which allows a tool to access the threaded pin. Using a suitable tool, for example a screwdriver, it is possible to change the thread take-off nozzle even when the lid extension is still installed.

Weitere Einzelheiten der Erfindung sind einem nachfolgend anhand der Zeichnungen dargestellten Ausführungsbeispiel entnehmbar. Es zeigen:

Fig. 1
eine Offenend-Spinnvorrichtung mit einem das Rotorgehäuse verschließenden Deckelelement sowie einem lösbar befestigten Deckelfortsatz,
Fig. 2
das Deckelelement gemäß Fig. 1 in vergrößertem Maßstab,
Fig. 3
eine Ansicht auf die Rückseite des erfindungsgemäßen Deckelfortsatzes,
Fig. 4
den Deckelfortsatz gemäß Schnitt IV-IV der Fig. 3,
Fig. 5
den Deckelfortsatz gemäß Schnitt V-V der Fig. 3,
Fig. 6
den Deckelfortsatz gemäß Schnitt VI-VI der Fig. 3.
Further details of the invention can be found in an exemplary embodiment illustrated below with reference to the drawings. Show it:
Fig. 1
an open-end spinning device with a cover element closing the rotor housing and a detachably attached cover extension,
Fig. 2
1 on an enlarged scale,
Fig. 3
a view of the back of the lid extension according to the invention,
Fig. 4
the lid extension according to section IV-IV of Fig. 3,
Fig. 5
the lid extension according to section VV of Fig. 3,
Fig. 6
the lid extension according to section VI-VI of Fig. 3rd

Die in Fig. 1 dargestellte OE-Spinnvorrichtung 1 weist, wie bekannt, ein Rotorgehäuse 2 auf, in dem ein Spinnrotor 3 mit hoher Drehzahl umläuft. Der Spinnrotor 3 ist dabei auf einer Stützscheibenlagerung 4 abgestützt und wird von einem Tangentialriemen 5 angetrieben.As is known, the OE spinning device 1 shown in FIG. 1 has a rotor housing 2 in which a spinning rotor 3 rotates at high speed. The spinning rotor 3 is supported on a support disk bearing 4 and is driven by a tangential belt 5.

Das nach vorne offene Rotorgehäuse 2 ist an eine Absaugeinrichtung 6 angeschlossen und wird während des Betriebes nach vorne durch ein Deckelelement 7 verschlossen, das um eine Schwenkachse 16 schwenkbar gelagert ist. Das Deckelelement 7 weist eine Faserbandauflöseeinrichtung 8 mit einer Auflösewalze 9, einer nicht näher dargestellten Faserbandeinzugswalze 10 sowie einem Teil des Faserleitkanales 11 auf. Die Auflösewalze 9 ist vorzugsweise durch einen Tangentialriemen 12 angetrieben. Der Antrieb der Faserbandeinzugswalze 10 erfolgt entweder über eine maschinenlange Antriebswelle oder über einen elektrischen Einzelantrieb 15.The rotor housing 2, which is open at the front, is connected to a suction device 6 and is closed at the front during operation by a cover element 7 which is pivotably mounted about a pivot axis 16. The cover element 7 has a sliver opening device 8 an opening roller 9, a sliver feed roller 10, not shown, and part of the fiber guide channel 11. The opening roller 9 is preferably driven by a tangential belt 12. The sliver feed roller 10 is driven either via a machine-long drive shaft or via an electric individual drive 15.

Des weiteren befinden sich im Deckelelement 7 unterhalb der Auflösewalze 9 eine Schmutzkammer 13, die über eine Schmutzabsaugung 14 entsorgt wird.Furthermore, there is a dirt chamber 13 in the cover element 7 below the opening roller 9, which is disposed of via a dirt suction device 14.

Das Deckelelement 7 weist eine Ringnut 32 zum Einlegen eines Lippendichtelementes 17 sowie eine in Richtung Rotorgehäuse offene Aufnahme 33 mit konischen Anlageflächen 34 auf. In dieser Aufnahme 33 ist ein Deckelfortsatz 18 mittels Schraubenbolzen 21 festgelegt, die entsprechende Durchgangsbohrungen im Deckelelement 7 durchgreifend, in Befestigungsbohrungen 30 des Deckelfortsatzes 18 fassen. Die exakte Lagefixierung des Deckelfortsatzes 18 innerhalb der Aufnahme 33, inbesondere die winkelgenaue Ausrichtung des Deckelfortsatzes, erfolgt über einen Zylinderstift 26 der, in eine Paßbohrung 35 des Deckelelementes 7 eingelassen, in eine entsprechende Paßbohrung 25 auf der Rückseite 36 des Deckelfortsatzes 18 greift. Im eingebauten Zustand liegt der mittels des Zylinderstiftes 26 winkelgenau ausgerichtete Deckelfortsatz 18 mit seiner konischen Anlagefläche 31 an der entsprechend geformten Anlagefläche 34 der Aufnahme 33 und wird dabei über die Befestigungsbolzen 21 mit einer in axialer Richtung wirkenden Haltekraft beaufschlagt.The cover element 7 has an annular groove 32 for inserting a lip sealing element 17 and a receptacle 33 which is open in the direction of the rotor housing and has conical contact surfaces 34. In this receptacle 33, a cover extension 18 is fixed by means of screw bolts 21, which pass through corresponding through bores in the cover element 7, in fastening bores 30 of the cover extension 18. The exact position fixing of the lid extension 18 within the receptacle 33, in particular the precise alignment of the lid extension, takes place via a cylindrical pin 26 which, inserted into a fitting bore 35 of the lid element 7, engages in a corresponding fitting bore 25 on the rear side 36 of the lid extension 18. In the installed state, the cover extension 18, which is aligned by means of the cylindrical pin 26 with its conical contact surface 31, lies against the correspondingly shaped contact surface 34 of the receptacle 33 and is thereby subjected to a holding force acting in the axial direction via the fastening bolts 21.

Der Deckelfortsatz 18 weist weiter eine zentrale Durchgangsbohrung 24 zur Aufnahme einer Fadenabzugsdüse 19 auf. In diese Durchgangsbohrung 24 mündet unter einem Winkel eine Gewindebohrung 27. In Verlängerung dieser Gewindebohrung 27 ist im Deckelelement 7 eine nicht dargestellte Anschlußbohrung oder Montageöffnung vorgesehen, die den Zugriff eines Werkzeuges auf einen in der Gewindebohrung 27 angeordneten Gewindestift 28 ermöglicht. Da der Gewindestift 28, der die Fadenabzugsdüse 19 in der Durchgangsbohrung 24 fixiert, von außen zugänglich ist, kann die Fadenabzugsdüse 19 auch gewechselt werden, während der Deckelfortsatz 18 im Deckelelement 7 eingebaut ist.The lid extension 18 also has a central through bore 24 for receiving a thread take-off nozzle 19. A threaded bore 27 opens into this through bore 24 at an angle. An extension of this threaded bore 27 is In the cover element 7, a connection bore or mounting opening, not shown, is provided, which enables a tool to access a threaded pin 28 arranged in the threaded bore 27. Since the threaded pin 28, which fixes the thread take-off nozzle 19 in the through hole 24, is accessible from the outside, the thread take-off nozzle 19 can also be changed while the cover extension 18 is installed in the cover element 7.

Wie insbesondere anhand der Fig. 3 bis 5 ersichtlich, sind sowohl die Gewindebohrung 27 als auch der Faserleitkanalabschnitt 37 orthogonal oder nahezu orthogonal in die konische Anlagefläche 31 des Deckelfortsatzes 18 eingelassen.As can be seen in particular from FIGS. 3 to 5, both the threaded bore 27 and the fiber guide channel section 37 are inserted orthogonally or almost orthogonally into the conical contact surface 31 of the lid extension 18.

Die erfindungsgemäße Ausbildung des Deckelelementes insbesondere die Verwendung geneigt angeordneter Anlageflächen und axial wirkender Befestigungsmittel, stellt in Verbindung mit der Anordnung eines entsprechenden Paßmittels eine weitere Verbesserung der bislang bekannten Rotorgehäuseabdeckungen dar. Der Erfindungsgegenstand bietet dabei sowohl Vorteile bezüglich einer kostengünstigen Fertigung als auch hinsichtlich seiner Funktionssicherheit.The design of the cover element according to the invention, in particular the use of inclined contact surfaces and axially acting fastening means, in connection with the arrangement of a corresponding fitting means represents a further improvement of the rotor housing covers known to date.

Claims (8)

  1. Open-end spinning device (1) with a suctioned rotor housing (2) open towards the front, a spinning rotor (3) turning at high speed inside the rotor housing (2) and a cover element (7) for closing the rotor housing (2), in which in a mount (33) of the cover element (7) a replaceable cover extension (18) is arranged able to be detached and secured precisely with an outlet region (22) of a fibre guiding channel (11) and a yarn draw-off nozzle (19)
    characterised in that
    - the cover extension (18) in the region of the fibre guiding channel transition from the cover element (7) to the cover extension (18) has a conical bearing surface (31) conforming with a corresponding bearing surface (34) of the cover element (7),
    - the fibre guiding channel section (37) is inserted othogonally or almost orthogonally into the conical bearing surface (31) of the cover extension (18) and
    - the bearing surfaces (31, 34) can be brought into an airtight position by securing means (21) acting in installation direction R.
  2. Open-end spinning device according to claim 1, characterised in that the fixing into position of the cover extension (18) inside the mount (33), in particular the angularly precise alignment of the cover element (18) is performed by means of a cylindrical pin (26), which is arranged in a fitting bore (35) of the cover element (7) and engages in a fitting bore (25) at the rear (36) of the cover extension (18).
  3. Cover element according to claim 1 and 2, characterised in that the cover extension (18) is designed as a rotationally symmetrical component, which can be secured replaceably with a backward conically designed bearing surface (31) onto a correspondingly shaped bearing surface (34) of the mount (33) and can be fixed into position precisely by a fitting means (26).
  4. Cover element according to claim 1 and 2, characterised in that the cover extension (18) is designed as a truncated pyramid-like component which can be secured replaceably with backward even bearing surfaces (31) onto correspondingly formed bearing surfaces (34) of the mount (33)
  5. Cover element according to claim 1, characterised in that the cover extension (18) on its rear side (36) has at least one threaded bore (30) for the engagement of a screw (21).
  6. Cover element according to one or several of the preceding claims, characterised in that the cover extension (18) has a central through bore (24) for receiving a yarn draw-off nozzle (19) and a threaded bore (27) for a securing screw (28) arranged at an angle relative to the through bore (24)
  7. Cover element according to claim 6, characterised in that the threaded bore (27) is arranged orthogonally relative to the external line of the conical bearing surface (31).
  8. Cover element according to claim 6 and 7, characterised in that a threaded pin (28) arranged in the threaded bore (27) locking the yarn draw-off nozzle (19) is accessible via an assembly opening in the cover element (7) even with a fitted cover extension (18).
EP94111032A 1993-10-09 1994-07-15 Open-end spinning device Expired - Lifetime EP0654551B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4334485A DE4334485A1 (en) 1993-10-09 1993-10-09 Open-end spinning device
DE4334485 1993-10-09

Publications (3)

Publication Number Publication Date
EP0654551A2 EP0654551A2 (en) 1995-05-24
EP0654551A3 EP0654551A3 (en) 1995-07-19
EP0654551B1 true EP0654551B1 (en) 1997-02-19

Family

ID=6499797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94111032A Expired - Lifetime EP0654551B1 (en) 1993-10-09 1994-07-15 Open-end spinning device

Country Status (3)

Country Link
US (1) US5937630A (en)
EP (1) EP0654551B1 (en)
DE (2) DE4334485A1 (en)

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US5953896A (en) * 1997-06-12 1999-09-21 Fritz Stahlecker Adaptor for an open-end spinning arrangement and method of making same

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DE4418723C1 (en) * 1994-05-28 1995-08-31 Rieter Ingolstadt Spinnerei Open end rotor spinner avoiding frequent rotor and cover renewal
DE19524837B4 (en) * 1995-07-07 2007-02-01 Saurer Gmbh & Co. Kg Fiber channel plate of an open-end spinning device
DE19544617B4 (en) * 1995-11-30 2008-06-12 Maschinenfabrik Rieter Ag Adapter for open-end spinning devices
DE19617527A1 (en) * 1996-05-02 1997-11-13 Schlafhorst & Co W OE=spinning rotor case sealed tight by quick=release fibre duct disc
DE19717735B4 (en) * 1997-04-26 2005-10-13 Saurer Gmbh & Co. Kg Open-end spinning device
DE19729192A1 (en) * 1997-07-09 1999-01-14 Schlafhorst & Co W Open end spinner channel plate adaptor for thread
EP0926275B1 (en) * 1997-12-18 2003-09-10 W. SCHLAFHORST AG & CO. Open-end spinning device for making S or Z twist yarns
DE19859164B4 (en) 1998-12-21 2008-02-07 Oerlikon Textile Gmbh & Co. Kg Channel plate adapter for an open-end spinning device
DE10224205A1 (en) 2002-05-31 2003-12-11 Schlafhorst & Co W Channel plate adapter for an open-end spinning device
DE10305279A1 (en) * 2003-02-08 2004-08-19 Saurer Gmbh & Co. Kg Channel plate adapter for an open-end rotor spinning device
DE10339875A1 (en) * 2003-08-29 2005-03-24 Saurer Gmbh & Co. Kg Cap for open-ended spinning rotor has a cover over a reduced-pressure chamber with a fibre outlet to a fibre jet to a concave transitional surface
DE102009013987A1 (en) 2009-03-19 2010-09-23 Oerlikon Textile Gmbh & Co. Kg Open-end spinning device
DE102011120106A1 (en) * 2011-12-02 2013-06-06 Oerlikon Textile Gmbh & Co. Kg Cover element of an open-end spinning device for closing an evacuated, forwardly open rotor housing
DE102015115912A1 (en) 2015-09-21 2017-03-23 Maschinenfabrik Rieter Ag Channel plate adapter and open-end spinning device with a channel plate adapter
DE102016003148A1 (en) 2016-03-16 2017-09-21 Saurer Germany Gmbh & Co. Kg Open-end rotor spinning device
DE102021114272A1 (en) 2021-06-02 2022-12-08 Saurer Spinning Solutions Gmbh & Co. Kg spinning device

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US5953896A (en) * 1997-06-12 1999-09-21 Fritz Stahlecker Adaptor for an open-end spinning arrangement and method of making same
DE19724882B4 (en) * 1997-06-12 2009-12-03 Maschinenfabrik Rieter Ag Adapter for open-end rotor spinning devices

Also Published As

Publication number Publication date
EP0654551A2 (en) 1995-05-24
DE59401827D1 (en) 1997-03-27
US5937630A (en) 1999-08-17
DE4334485A1 (en) 1995-04-13
EP0654551A3 (en) 1995-07-19

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