EP2599905B1 - Cap element of an open ended spinning machine for closing a rotor housing open to the front and subject to suction - Google Patents

Cap element of an open ended spinning machine for closing a rotor housing open to the front and subject to suction Download PDF

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Publication number
EP2599905B1
EP2599905B1 EP12007120.4A EP12007120A EP2599905B1 EP 2599905 B1 EP2599905 B1 EP 2599905B1 EP 12007120 A EP12007120 A EP 12007120A EP 2599905 B1 EP2599905 B1 EP 2599905B1
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EP
European Patent Office
Prior art keywords
channel plate
plate adapter
cap element
open
spinning
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EP12007120.4A
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German (de)
French (fr)
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EP2599905A2 (en
EP2599905B2 (en
EP2599905A3 (en
Inventor
Heinz-Georg Wassenhoven
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Saurer Spinning Solutions GmbH and Co KG
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Saurer Germany GmbH and Co KG
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • 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 invention relates to a cover element of an open-end spinning device for closing a forwardly open, during the spinning process acted upon by negative pressure rotor housing according to the preamble of claim 1.
  • lid elements for closing rotor housings have long been known in various embodiments in connection with open-end rotor spinning machines and described in detail in numerous patent applications.
  • an open-end spinning device is described, the rotor housing is closed during spinning by a pivotally mounted cover member having an open in the direction of the rotor housing in which, by means of bolts, pass through the corresponding through holes in the cover element, interchangeable a channel plate adapter can be fixed.
  • the inclusion of the cover member has a circular, conical contact surface, on which a correspondingly formed bearing surface is matched to the base body of the channel plate adapter.
  • the channel plate adapter In the installed state of the channel plate adapter is located with the conical bearing surface of its body to the correspondingly shaped contact surface of the receptacle of the lid member and is acted upon via the bolts with a force acting in the axial direction holding force.
  • a cylindrical pin is provided, which corresponds with a corresponding fitting bore.
  • a disadvantage of this known cover element is, inter alia, the type of attachment of the channel plate adapter in the receptacle of the cover element. That is, to replace the channel plate adapter always first the two bolts must be removed, which is very time-consuming, especially in a batch change, in which usually all channel plate adapter of an open-end rotor spinning machine must be changed.
  • cover elements have already been proposed in which the above-described bolts have been replaced by other, relatively quickly releasable locking means, which act positively and / or positively.
  • the cover element has a conical receptacle for fixing a channel plate adapter, whose base body has a correspondingly conical bearing surface.
  • the channel plate adapter also has on the rear side of its basic body a centric projection which, in the installed state of the channel plate adapter, grips the lid element and is acted upon by a rod spring arranged on the cover element in the sense of "fixing".
  • open-end spinning devices are described with pivotally mounted cover elements, which, as usual, each having a receptacle open in the direction of the rotor housing with conical bearing surfaces, in which easily replaceable a channel plate adapter can be fixed.
  • the receptacle for the channel plate adapter is largely closed in these cover elements. That is, in the installed state of the channel plate adapter is located with its conical contact surface on a correspondingly shaped contact surface of the receptacle of the lid member and is thereby either, as in DE 196 17 527 A1 described over integrated into the cover element, both positive and non-positive act acting fasteners with a force acting in the axial direction holding force, or the channel plate adapter, as by the DE 198 36 073 A1 known, fixed by a likewise integrated into the cover element, purely non-positively working magnetic coupling.
  • the present invention seeks to develop a cover member for closing the rotor housing of an open-end spinning device, which allows a proper, functional setting a channel plate adapter in a receptacle of the lid member.
  • a sealing device which has a circumferential sealing surface which is arranged concentrically to the central longitudinal axis of the closed lid member in the rotor housing rotating spinning rotor and against which radially supports an oppositely disposed elastic ring seal, not only has the advantage that the channel plate adapter can be properly sealed due to the radially acting sealing device in the receptacle of the lid member positioned, but the circumferential sealing surface of the radially acting sealing device also allows in a simple manner that always an exact axial mounting position of the channel plate adapter can be realized.
  • the acting sealing device not only reliably prevents the entry of false air into the rotor housing, but also ensures that the axial mounting position of the channel plate adapter no negative influences, such as a start of the spinning rotor to an incorrectly positioned channel plate adapter , can result.
  • the sealing device by the circumferential sealing surface, which is integrated into the receptacle of the lid member and an annular seal is formed in an annular groove the main body of the channel plate adapter is arranged.
  • Such a design has, inter alia, the advantage that no new requirements are given with regard to the usable channel plate adapter.
  • cover elements whose receptacles, as described in claim 2 have sealing devices with peripheral sealing surfaces, "old", that is, already in use, channel plate adapter can be used successfully without any problems.
  • the "old" channel plate adapter need only have in the region of its base body, as in many standard channel plate adapter standard, an annular groove in which a ring seal is arranged. It is thus possible in a relatively simple manner, the reliability of open-end spinning devices that are already in use, thereby significantly improve that they are equipped with cover elements having an inventively arranged and trained, circumferential sealing surface in the region of their recording.
  • the sealing surface is, as described in claim 3, arranged in an advantageous embodiment in a recess in the input-side region of a conical bearing surface of the receptacle of the lid member.
  • Such an arrangement of the sealing surface not only allows, as described above, the use of "old" Kanalplattenadaptern, but also allows a relatively simple production of such a sealing surface. That is, by the arrangement of the sealing surface in a recess in the region of the maximum clear diameter of the recording of the lid member can be used in the creation of the sealing surface relatively simple tools are used, which is z. B. has a positive effect on the manufacturing cost.
  • the sealing surface has a respect to the central axis of the spinning rotor axial length which is greater than the cross section of the annular seal of the channel plate adapter.
  • the recess formed in the bearing surface of the receptacle has a maximum depth, with respect to the conical bearing surface of the receptacle, which is less than half the thickness of the annular seal of the channel plate adapter.
  • Sealing devices with such dimensioned and matched to the bearing surface of the recording of the lid member sealing surfaces are optimally matched to the ring seals of the known channel plate adapter on the one hand and thereby ensure a reliable seal against false air, on the other hand, by such a design of the sealing surfaces proper axial positioning of the channel plate adapter in the recording the lid member in any way hindered.
  • Open-end rotor spinning device 1 shown has a rotor housing 2, in which a spinning rotor 3, whose central longitudinal axis is designated by the reference numeral 60, rotates at high speed.
  • the spinning rotor 3 is mounted with its rotor shaft 4 in the gusset of a support disk bearing 5 and is driven by a machine-long tangential belt 6, which is held by a pressure roller 7 in contact with the rotor shaft 4.
  • the rotor housing 2 which is open at the front per se is closed during the spinning operation by a cover element 8 or, as usual, a lip seal 9 embedded in the cover element 8.
  • the rotor housing 2 is in turn connected via a corresponding pneumatic line 10 to a vacuum source 11, which provides for required in open-end spinning negative pressure in the rotor housing 2.
  • the lid member 8 has an open in the direction of the rotor housing 2 receptacle 31 with a conical bearing surface 44 in which a channel plate adapter 12 is interchangeable fixed.
  • the channel plate adapter 12 has a tower-like extension 26 and a conically shaped main body 27.
  • a yarn withdrawal nozzle 13 is arranged in addition to the mouth region 32 of a Faserleitkanales 14 while the main body 27 has a conical bearing surface 40 and a rear, centric projection 33.
  • the projection 33 is gripped by a locking means 34, for example a bar spring, while the channel plate adapter 12 is acted upon in the direction R.
  • a locking means 34 for example a bar spring
  • the channel plate adapter 12 is acted upon in the direction R.
  • the central extension 33 of the channel plate adapter 12 also includes a Fadenabzugsrschreibchen 15, which is also attached to the cover 35 of the lid member 8.
  • Faserbandauflinate immunity 18 is connected, which, as is known, inter alia, an opening roller 21 and a sliver feed cylinder 22, which are respectively mounted in bearing brackets 19 and 20 of the pivot housing 8.
  • the opening roller 21 runs, as usual, in an opening cylinder housing 17, wherein the drive of the opening roller 21 via a machine-tangential belt 24 takes place, which acts on the whorl 23 of the opening roller 21.
  • the sliver feed cylinder 22 is preferably driven by a worm gear 36 from a machine-long drive shaft 25.
  • the opening roller housing 17 of the sliver disengaging device 18 also has, as usual, a dirt discharge opening 28, on the dirt particles 29, which are released when disassembling the sliver into individual fibers, in a, for example, mechanically operating dirt disposal device 30, can be removed.
  • the Fig.2 shows the lid member 8 according to the invention in a larger scale, partly in section.
  • a receptacle 31 concentric with the central longitudinal axis 60 of a bearing in a rotor housing 2
  • spinning rotor 3 is arranged, interchangeable a channel plate adapter 12 set.
  • the receptacle 31 has a conical bearing surface 44, on which the channel plate adapter 12 is mounted with a base body 27, which has a correspondingly conical bearing surface 40.
  • the main body 27 of the channel plate adapter 12 also has a central projection 33 which engages the cover element 8 to the rear and is acted upon by a locking means 34, for example a rod spring, in the direction R. That is, the rod spring 34 acting on the centric projection 33 positions the channel plate adapter 12 accurately in the receptacle 31.
  • a locking means 34 for example a rod spring
  • the channel plate adapter 12 also has, as is known, in the region of the largest diameter of its base body 27, an annular groove 41 in which a ring seal 39 is positioned, which is provided with a in Figure 3 and Figure 4 shown in detail, circumferential sealing surface 38 forms a radially acting sealing device 37.
  • the channel plate adapter 12 further has, as usual, a tower-like extension 26, which has the mouth region 32 of a fiber guide channel 14 and has a through hole in which a yarn withdrawal nozzle 13 is arranged.
  • the Figure 3 shows the cover element 8 according to the invention with the channel plate adapter 12 removed.
  • the integrated into the lid member 8 receptacle 31 on the input side that is, in the region of its bearing surface 44, a circumferential sealing surface 38 which parallel to the central longitudinal axis 60 of a (in Figure 3 not shown) spinning rotor is arranged.
  • the sealing surface 38 forms in the installed state of the channel plate adapter 12 with a arranged in the base body 27 of the channel plate adapter 12 in an annular groove 41 ring seal 39 a radially acting sealing device 37th
  • the Figure 4 shows on a large scale the in Fig.2 X, that is, a section through the region of the radially acting sealing device 37th Of the integrated into the lid member 8 receptacle 31 while the input-side region whose bearing surface 40 is shown.
  • the bearing surface 40 in the region of its maximum clear diameter has a recess which forms a circumferential sealing surface 38 arranged parallel to the central longitudinal axis 60 of a spinning rotor 3 (not shown).
  • the sealing surface 38 in this case has a length 1 which is greater than the cross section S of a ring seal 39, which is arranged in an annular groove 41 of the main body 27 of an associated channel plate adapter 12.
  • the sealing surface 38 also has, as can be seen, with respect to the bearing surface 40 to a maximum depth t, which is less than half the thickness S of the ring seal 39 of the channel plate adapter 12.
  • the ring seal 39 is located on the sealing surface 38 of the receptacle 31 of the lid element 8 and forms with this one the rotor housing reliably sealing radially acting sealing device.
  • the invention should not be limited to the embodiment shown in the drawings.
  • the sealing surface (38) in the region of a recess (31) of the cover element (8) arranged recess may be provided in the base body (27) of a channel plate adapter (12) has a sealing surface having recess.
  • an elastic ring seal is installed in an annular groove of the exception, which forms a radially acting sealing device with the sealing surface in the installed state of the channel plate adapter.

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

Description

Deckelelement einer Offenend-Spinnvorrichtung zum Verschließen eines besaugten, nach vorne hin offenen RotorgehäusesCover element of an open-end spinning device for closing an evacuated, forwardly open rotor housing

Die Erfindung betrifft ein Deckelelement einer Offenend-Spinnvorrichtung zum Verschließen eines nach vorne hin offenen, während des Spinnprozesses mit Unterdruck beaufschlagten Rotorgehäuses gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a cover element of an open-end spinning device for closing a forwardly open, during the spinning process acted upon by negative pressure rotor housing according to the preamble of claim 1.

Derartige Deckelelemente zum Verschließen von Rotorgehäusen sind im Zusammenhang mit Offenend-Rotorspinnmaschinen seit langem in unterschiedlichen Ausführungsformen bekannt und in zahlreichen Patentanmeldungen ausführlich beschrieben.Such lid elements for closing rotor housings have long been known in various embodiments in connection with open-end rotor spinning machines and described in detail in numerous patent applications.

In der DE 43 34 485 A1 ist beispielsweise eine Offenend-Spinnvorrichtung beschrieben, deren Rotorgehäuse während des Spinnbetriebes durch ein schwenkbar gelagertes Deckelelement verschlossen ist, das eine in Richtung Rotorgehäuse offene Aufnahme aufweist, in der, mittels Schraubenbolzen, die entsprechende Durchgangsbohrungen im Deckelelement durchgreifen, auswechselbar ein Kanalplattenadapter festlegbar ist.
Die Aufnahme des Deckelelements verfügt über eine kreisförmige, konisch ausgebildete Anlagefläche, auf die eine entsprechend ausgebildete Lagerfläche am Grundkörper des Kanalplattenadapters abgestimmt ist.
Im eingebauten Zustand liegt der Kanalplattenadapter mit der konischen Lagerfläche seines Grundkörpers an der entsprechend geformten Anlagefläche der Aufnahme des Deckelelements an und wird dabei über die Schraubenbolzen mit einer in axialer Richtung wirkenden Haltekraft beaufschlagt.
Zur exakten Lagefixierung des Kanalplattenadapters innerhalb der Aufnahme, insbesondere zur winkelgenauen Ausrichtung des Kanalplattenadapters, ist außerdem ein Zylinderstift vorgesehen, der mit einer entsprechenden Passbohrung korrespondiert.In the DE 43 34 485 A1 For example, an open-end spinning device is described, the rotor housing is closed during spinning by a pivotally mounted cover member having an open in the direction of the rotor housing in which, by means of bolts, pass through the corresponding through holes in the cover element, interchangeable a channel plate adapter can be fixed.
The inclusion of the cover member has a circular, conical contact surface, on which a correspondingly formed bearing surface is matched to the base body of the channel plate adapter.
In the installed state of the channel plate adapter is located with the conical bearing surface of its body to the correspondingly shaped contact surface of the receptacle of the lid member and is acted upon via the bolts with a force acting in the axial direction holding force.
For exact position fixation of the channel plate adapter within the receptacle, in particular for precise angular alignment of the channel plate adapter, In addition, a cylindrical pin is provided, which corresponds with a corresponding fitting bore.

Nachteilig bei diesem bekannten Deckelelement ist unter anderem die Art der Befestigung des Kanalplattenadapters in der Aufnahme des Deckelelements. Das heißt, zum Auswechseln des Kanalplattenadapters müssen stets zunächst die beiden Schraubenbolzen entfernt werden, was insbesondere bei einem Partiewechsel, bei dem in der Regel alle Kanalplattenadapter einer Offenend-Rotorspinnmaschine gewechselt werden müssen, sehr zeitaufwendig ist.A disadvantage of this known cover element is, inter alia, the type of attachment of the channel plate adapter in the receptacle of the cover element. That is, to replace the channel plate adapter always first the two bolts must be removed, which is very time-consuming, especially in a batch change, in which usually all channel plate adapter of an open-end rotor spinning machine must be changed.

Es sind daher bereits Deckelelemente vorgeschlagen worden, bei denen die vorstehend beschriebenen Schraubenbolzen durch andere, relativ schnell lösbare Arretierungsmittel, die kraftschlüssig und/oder formschlüssig wirken, ersetzt wurden.Therefore, cover elements have already been proposed in which the above-described bolts have been replaced by other, relatively quickly releasable locking means, which act positively and / or positively.

Durch die DE 197 17 735 A1 ist beispielsweise eine Offenend-Spinnvorrichtung bekannt, deren Deckelelement, wie bekannt, eine konische Aufnahme zum Festlegen eines Kanalplattenadapters aufweist, dessen Grundkörper über eine entsprechend konisch ausgebildete Lagerfläche verfügt.
Der Kanalplattenadapter weist auf der Rückseite seines Grundkörpers außerdem einen zentrischen Ansatz auf, der im Einbauzustand des Kanalplattenadapters das Deckelelement durchfasst und von einer am Deckelelement angeordneten Stabfeder im Sinne "fixieren" beaufschlagt wird. Ein derartig festgelegter Kanalplattenadapter kann im Bedarfsfall schnell und problemlos ausgebaut werden, da lediglich die Stabfeder weggeschwenkt werden muss, um den Kanalplattenadapter freizugeben.By the DE 197 17 735 A1 For example, an open-end spinning device is known, the cover element, as known, has a conical receptacle for fixing a channel plate adapter, whose base body has a correspondingly conical bearing surface.
The channel plate adapter also has on the rear side of its basic body a centric projection which, in the installed state of the channel plate adapter, grips the lid element and is acted upon by a rod spring arranged on the cover element in the sense of "fixing". Such a fixed channel plate adapter can be quickly and easily removed if necessary, since only the bar spring must be swung away to release the channel plate adapter.

In der Praxis hat sich allerdings gezeigt, dass auch bei Deckelelementen, bei denen der Kanalplattenadapter, wie in der DE 197 17 735 A1 beschrieben, schnell auswechselbar in einer Aufnahme des Deckelelements festgelegt ist, noch Verbesserungspotential gegeben ist.
Bei derartigen Deckelelementen, bei denen ein Kanalplattenadapter mit seinem konischen Grundkörper direkt in einer konischen, nach hinten teilweise offenen Aufnahme des Deckelelements festgelegt ist, besteht beispielsweise stets die Gefahr, dass Falschluft eintreten kann.
Das heißt, bei solchen Deckelelementen können bereits kleinste Verkantungen beim Einbau des Kanalplattenadapters oder kleine Unreinheiten auf den Lagerflächen zum Eintritt von Falschluft in das Rotorgehäuse führen, mit der Folge, dass an der betroffenen Spinnvorrichtung zum Teil erhebliche Probleme auftreten.In practice, however, has shown that even with cover elements, in which the channel plate adapter, as in the DE 197 17 735 A1 described, quickly interchangeable in one Recording the lid member is set, there is still room for improvement.
In such cover elements, in which a channel plate adapter is fixed with its conical body directly in a conical, rearwardly partially open receptacle of the lid member, for example, there is always the danger that false air can occur.
That is, with such cover elements even the smallest tilting when installing the channel plate adapter or small impurities on the bearing surfaces can lead to the entry of false air into the rotor housing, with the result that at the affected spinning device sometimes considerable problems.

Um den Eintritt von Falschluft in das Rotorgehäuse möglichst zuverlässig zu verhindern, ist deshalb bereits vorgeschlagen worden, die Deckelelemente so auszubilden, dass im Bereich der Aufnahmen Durchgangsbohrungen für Befestigungsmittel möglichst vermieden werden.In order to prevent the ingress of false air into the rotor housing as reliably as possible, it has therefore already been proposed to design the cover elements in such a way that through-holes for fastening means are avoided as far as possible in the region of the receptacles.

In der DE 196 17 527 A1 oder der DE 198 36 073 A1 sind beispielsweise Offenend-Spinnvorrichtungen mit schwenkbar gelagerten Deckelelementen beschrieben, die, wie üblich, jeweils eine in Richtung Rotorgehäuse offene Aufnahme mit konischen Anlageflächen aufweisen, in der leicht auswechselbar ein Kanalplattenadapter festlegbar ist.In the DE 196 17 527 A1 or the DE 198 36 073 A1 For example, open-end spinning devices are described with pivotally mounted cover elements, which, as usual, each having a receptacle open in the direction of the rotor housing with conical bearing surfaces, in which easily replaceable a channel plate adapter can be fixed.

Allerdings ist bei diesen Deckelelementen die Aufnahme für den Kanalplattenadapter weitestgehend geschlossen. Das heißt, im eingebauten Zustand liegt der Kanalplattenadapter mit seiner konischen Anlagefläche an einer entsprechend geformten Anlagefläche der Aufnahme des Deckelelements an und wird dabei entweder, wie in der DE 196 17 527 A1 beschrieben, über in das Deckelelement integrierte, sowohl form- als auch kraftschlüssig wirkende Befestigungsmittel mit einer in axialer Richtung wirkenden Haltekraft beaufschlagt, oder der Kanalplattenadapter wird, wie durch die DE 198 36 073 A1 bekannt, durch eine ebenfalls in das Deckelelement integrierte, rein kraftschlüssig arbeitende Magnetkupplung fixiert.However, the receptacle for the channel plate adapter is largely closed in these cover elements. That is, in the installed state of the channel plate adapter is located with its conical contact surface on a correspondingly shaped contact surface of the receptacle of the lid member and is thereby either, as in DE 196 17 527 A1 described over integrated into the cover element, both positive and non-positive act acting fasteners with a force acting in the axial direction holding force, or the channel plate adapter, as by the DE 198 36 073 A1 known, fixed by a likewise integrated into the cover element, purely non-positively working magnetic coupling.

Wenngleich mit derartig ausgebildeten Deckelelementen der Eintritt von Falschluft in das Rotorgehäuse weitestgehend vermieden werden konnte, haben sich solche Deckelelemente aus verschiedenen Gründen, unter anderem auch aus Kostengründen, als nicht vorteilhaft erwiesen und konnten sich in der Praxis nicht durchsetzen.
Bei der Ausführungsform gemäß DE 196 17 527 A1 muss zum Auswechseln eines Kanalplattenadapters beispielsweise stets neben einer als kraftschlüssiges Befestigungsmittel eingesetzten Magnetkupplung noch ein als Gewindeverbindung bzw. Bajonettverschluss ausgebildetes, mit der Magnetkupplung zusammenwirkendes formschlüssiges Befestigungsmittel ggf. unter Verwendung von Spezialwerkzeug gelöst werden.
Auch die Ausführungsform gemäß DE 198 36 073 A1 , bei der der Kanalplattenadapter nur durch eine in das Deckelelement integrierte Magnetkupplung gehalten wird, hat sich nicht als besonders praktisch erwiesen und aus diesem Grunde ebenfalls keinen Eingang in die Praxis gefunden.Although with such a trained cover elements of the entry of false air into the rotor housing could be largely avoided, such cover elements for various reasons, including for cost reasons, have proved not advantageous and could not prevail in practice.
In the embodiment according to DE 196 17 527 A1 For exchanging a channel plate adapter, for example, in addition to a magnetic coupling used as a force-locking fastening means, a form-locking fastening means designed as a threaded connection or bayonet closure and cooperating with the magnetic coupling must optionally be achieved using special tools.
Also, the embodiment according to DE 198 36 073 A1 , in which the channel plate adapter is held only by a magnetic coupling integrated in the cover element, has not proven to be particularly practical and therefore also found no input into the practice.

Wenngleich, wie vorstehend erläutert, bei Deckelelementen, wie sie durch die DE 197 17 735 A1 bekannt sind, stets die Gefahr bestand, dass Falschluft in das Rotorgehäuse eintritt, konnten sich derartig ausgebildete Deckelelemente nach einer Modifikation des zugehörigen Kanalplattenadapters in der Praxis durchsetzen und sind in der Textilindustrie inzwischen in großer Stückzahl im Einsatz. Das heißt, um das im Zusammenhang mit derartig ausgebildeten Deckelelementen bekannte Problem des Eintritts von Falschluft in den Griff zu bekommen, wurden die bekannten Kanalplattenadapter im Bereich des maximalen Durchmessers ihres Grundkörpers mit einer Ringnut ausgestattet, in der eine Ringdichtung liegt, die im Einbauzustand des Kanalplattenadapters mit der konischen Anlagefläche der Aufnahme des Deckelelementes korrespondiert.
Die an der konischen Anlagefläche der Aufnahme des Deckelelements anliegende Ringdichtung verhindert zuverlässig, dass zwischen den Anlageflächen des Kanalplattenadapters und den Anlageflächen der Aufnahme Falschluft in das Rotorgehäuse eindringen kann.Although, as explained above, in cover elements, as they pass through the DE 197 17 735 A1 are known, there was always the risk that false air enters the rotor housing, such trained cover elements were able to prevail in practice after a modification of the associated channel plate adapter and are now in the textile industry in large quantities in use. That is, to the known in connection with such trained cover elements problem of Entrance of false air to get a grip, the known channel plate adapter in the region of the maximum diameter of its base body were equipped with an annular groove in which a ring seal is located, which corresponds in the installed state of the channel plate adapter with the conical contact surface of the recording of the lid member.
The voltage applied to the conical contact surface of the receptacle of the lid member ring seal reliably prevents that between the contact surfaces of the channel plate adapter and the contact surfaces of the intake false air can penetrate into the rotor housing.

Inzwischen hat sich allerdings herausgestellt, dass auch die Anlage der in einer Ringnut des Grundkörpers des Kanalplattenadapters angeordneten Ringdichtung an der konischen Anlagefläche der Aufnahme des Deckelelements nicht immer optimal ist.
Das heißt, eine solche Anordnung weist den Nachteil auf, dass nicht immer eine exakte axiale Einbaulage des Kanalplattenadapters in der Aufnahme des Deckelelements realisiert werden kann.
Bei der vorstehend beschriebenen Ausführungsform besteht vielmehr die Gefahr, dass der Kanalplattenadapter in axialer Richtung zu nahe am Spinnrotor positioniert ist, mit der Folge, dass der während des Spinnbetriebes mit hoher Drehzahl umlaufende Spinnrotor mit dem unkorrekt positionierten Kanalplattenadapter kollidieren kann.In the meantime, however, it has been found that even the arrangement of the ring seal arranged in an annular groove of the base body of the channel plate adapter on the conical bearing surface of the receptacle of the cover element is not always optimal.
That is, such an arrangement has the disadvantage that not always an exact axial mounting position of the channel plate adapter can be realized in the receptacle of the lid member.
Rather, in the embodiment described above, there is a risk that the channel plate adapter is positioned too close to the spinning rotor in the axial direction, with the result that the spinning rotor revolving at high speed during the spinning operation may collide with the incorrectly positioned channel plate adapter.

Ausgehend vom vorstehend beschriebenen Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Deckelelement zum Verschließen des Rotorgehäuses einer Offenend-Spinnvorrichtung zu entwickeln, das ein ordnungsgemäßes, funktionsgerechtes Festlegen eines Kanalplattenadapters in einer Aufnahme des Deckelelements ermöglicht.Based on the above-described prior art, the present invention seeks to develop a cover member for closing the rotor housing of an open-end spinning device, which allows a proper, functional setting a channel plate adapter in a receptacle of the lid member.

Diese Aufgabe wird erfindungsgemäß durch ein Deckelelement gelöst, wie es im Anspruch 1 beschrieben ist.This object is achieved by a cover element, as described in claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Die erfindungsgemäße Ausbildung des Deckelelements, bei dem im Einbauzustand des Kanalplattenadapters zwischen einer Aufnahme des Deckelelements und dem Grundkörper des Kanalplattenadapters eine Dichteinrichtung vorhanden ist, die über eine umlaufende Dichtfläche verfügt, die konzentrisch zur Mittenlängsachse des bei geschlossenem Deckelelement im Rotorgehäuse rotierenden Spinnrotors angeordnet ist und gegen die sich eine gegenüberliegend angeordnete elastische Ringdichtung radial abstützt, hat nicht nur den Vorteil, dass der Kanalplattenadapter aufgrund der radial wirkenden Dichteinrichtung ordnungsgemäß abgedichtet in der Aufnahme des Deckelelements positioniert werden kann, sondern die umlaufende Dichtfläche der radial wirkenden Dichteinrichtung ermöglicht auch auf einfache Weise, dass stets eine exakte axiale Einbaulage des Kanalplattenadapters realisiert werden kann.
Das heißt, im Einbauzustand des Kanalplattenadapters verhindert die wirkende Dichteinrichtung nicht nur zuverlässig das Eintreten von Falschluft in das Rotorgehäuse, sondern gewährleistet auch, dass sich aus der axialen Einbaulage des Kanalplattenadapters keinerlei negative Einflüsse, wie zum Beispiel ein Anlaufen des Spinnrotors an einen unkorrekt positionierten Kanalplattenadapter, ergeben können.The inventive construction of the cover member, wherein in the installed state of the channel plate adapter between a receptacle of the cover member and the base of the channel plate adapter, a sealing device is provided which has a circumferential sealing surface which is arranged concentrically to the central longitudinal axis of the closed lid member in the rotor housing rotating spinning rotor and against which radially supports an oppositely disposed elastic ring seal, not only has the advantage that the channel plate adapter can be properly sealed due to the radially acting sealing device in the receptacle of the lid member positioned, but the circumferential sealing surface of the radially acting sealing device also allows in a simple manner that always an exact axial mounting position of the channel plate adapter can be realized.
That is, in the installed state of the channel plate adapter, the acting sealing device not only reliably prevents the entry of false air into the rotor housing, but also ensures that the axial mounting position of the channel plate adapter no negative influences, such as a start of the spinning rotor to an incorrectly positioned channel plate adapter , can result.

Wie im Anspruch 2 beschrieben, ist in vorteilhafter Ausführungsform vorgesehen, dass die Dichteinrichtung durch die umlaufende Dichtfläche, die in die Aufnahme des Deckelelements integriert ist und eine Ringdichtung gebildet wird, die in einer Ringnut des Grundkörpers des Kanalplattenadapters angeordnet ist.
Eine derartige Ausbildung weist unter anderem den Vorteil auf, dass bezüglich der einsetzbaren Kanalplattenadapter keine neuen Anforderungen gegeben sind.
Das bedeutet, bei Deckelelementen, deren Aufnahmen, wie im Anspruch 2 beschrieben, Dichteinrichtungen mit umlaufenden Dichtflächen aufweisen, können problemlos auch "alte", das heißt, bereits im Einsatz befindliche Kanalplattenadapter erfolgreich zum Einsatz gebracht werden.
Die "alten" Kanalplattenadapter müssen lediglich im Bereich ihres Grundkörpers, wie bei vielen Kanalplattenadapter Standard, eine Ringnut aufweisen, in der eine Ringdichtung angeordnet ist. Es ist folglich auf relative einfache Weise möglich, die Funktionssicherheit von Offenend-Spinnvorrichtungen, die bereits im Einsatz stehen, dadurch deutlich zu verbessern, dass sie mit Deckelelementen ausgestattet werden, die im Bereich ihrer Aufnahme eine erfindungsgemäß angeordnete und ausgebildete, umlaufende Dichtfläche aufweisen.As described in claim 2, it is provided in an advantageous embodiment that the sealing device by the circumferential sealing surface, which is integrated into the receptacle of the lid member and an annular seal is formed in an annular groove the main body of the channel plate adapter is arranged.
Such a design has, inter alia, the advantage that no new requirements are given with regard to the usable channel plate adapter.
This means that in the case of cover elements whose receptacles, as described in claim 2, have sealing devices with peripheral sealing surfaces, "old", that is, already in use, channel plate adapter can be used successfully without any problems.
The "old" channel plate adapter need only have in the region of its base body, as in many standard channel plate adapter standard, an annular groove in which a ring seal is arranged. It is thus possible in a relatively simple manner, the reliability of open-end spinning devices that are already in use, thereby significantly improve that they are equipped with cover elements having an inventively arranged and trained, circumferential sealing surface in the region of their recording.

Die Dichtfläche ist, wie im Anspruch 3 beschrieben, in vorteilhafter Ausführungsform in einer Ausnehmung im eingangsseitigen Bereich einer konisch ausgebildeten Lagerfläche der Aufnahme des Deckelelements angeordnet.
Eine solche Anordnung der Dichtfläche ermöglicht nicht nur, wie vorstehend beschrieben, den Einsatz von "alten" Kanalplattenadaptern, sondern ermöglicht auch eine relativ einfache Herstellung einer solchen Dichtfläche. Das heißt, durch die Anordnung der Dichtfläche in einer Ausnehmung im Bereich des maximalen lichten Durchmessers der Aufnahme des Deckelelements können bei der Erstellung der Dichtfläche relativ einfache Werkzeuge zum Einsatz gebracht werden, was sich z. B. auf die Herstellungskosten positiv auswirkt.The sealing surface is, as described in claim 3, arranged in an advantageous embodiment in a recess in the input-side region of a conical bearing surface of the receptacle of the lid member.
Such an arrangement of the sealing surface not only allows, as described above, the use of "old" Kanalplattenadaptern, but also allows a relatively simple production of such a sealing surface. That is, by the arrangement of the sealing surface in a recess in the region of the maximum clear diameter of the recording of the lid member can be used in the creation of the sealing surface relatively simple tools are used, which is z. B. has a positive effect on the manufacturing cost.

Wie im Anspruch 4 beschrieben, ist in vorteilhafter Ausführungsform des Weiteren vorgesehen, dass die Dichtfläche eine bezüglich der Mittelachse des Spinnrotors axiale Länge aufweist, die größer ist, als der Querschnitt der Ringdichtung des Kanalplattenadapters.As described in claim 4, it is further provided in an advantageous embodiment that the sealing surface has a respect to the central axis of the spinning rotor axial length which is greater than the cross section of the annular seal of the channel plate adapter.

Wie im Anspruch 5 beschrieben, weist die in die Lagerfläche der Aufnahme eingearbeitete Ausnehmung bezüglich der konisch ausgebildeten Lagerfläche der Aufnahme eine maximale Tiefe auf, die kleiner ist, als die halbe Stärke der Ringdichtung des Kanalplattenadapters.As described in claim 5, the recess formed in the bearing surface of the receptacle has a maximum depth, with respect to the conical bearing surface of the receptacle, which is less than half the thickness of the annular seal of the channel plate adapter.

Dichteinrichtungen mit derartig dimensionierten und auf die Lagerfläche der Aufnahme des Deckelelements abgestimmten Dichtflächen sind einerseits optimal auf die Ringdichtungen der bekannten Kanalplattenadapter abgestimmt und gewährleisten dadurch eine zuverlässige Abdichtung gegen Falschluft, andererseits wird durch eine solche Ausbildung der Dichtflächen eine ordnungsgemäße axiale Positionierung des Kanalplattenadapters in der Aufnahme des Deckelelements in keiner Weise behindert.Sealing devices with such dimensioned and matched to the bearing surface of the recording of the lid member sealing surfaces are optimally matched to the ring seals of the known channel plate adapter on the one hand and thereby ensure a reliable seal against false air, on the other hand, by such a design of the sealing surfaces proper axial positioning of the channel plate adapter in the recording the lid member in any way hindered.

Weitere Einzelheiten der Erfindung sind einem nachfolgend anhand der Zeichnungen dargestellten Ausführungsbeispiel entnehmbar.Further details of the invention are shown in an embodiment shown below with reference to the drawings.

Es zeigt:It shows:

Fig. 1Fig. 1
schematisch in Seitenansicht eine Offenend-Spinnvorrichtung einer Offenend-Rotorspinnmaschine, mit einem das Rotorgehäuse verschließenden, erfindungsgemäßen Deckelelement, teilweise im Schnitt,schematically in side view an open-end spinning device of an open-end rotor spinning machine, with a rotor housing closing, the cover element according to the invention, partly in section,
Fig. 2Fig. 2
das Deckelelement der in Fig.1 dargestellten Offenend-Spinnvorrichtung mit einem in einer erfindungsgemäß ausgebildeten Aufnahme des Deckelelements auswechselbar angeordneten Kanalplattenadapter, in einem größeren Maßstab,the cover element of in Fig.1 Open-end spinning device shown with a receptacle formed in accordance with the invention of the cover element interchangeable arranged channel plate adapter, on a larger scale,
Fig. 3Fig. 3
das in Fig.2 dargestellte Deckelelement, wobei der Kanalplattenadapter ausgebaut ist,this in Fig.2 illustrated cover element, wherein the channel plate adapter is removed,
Fig. 4Fig. 4
gemäß Ansicht X der Fig.2, im Detail eine radial wirkende Dichteinrichtung, die durch eine in der Aufnahme des Deckelelements angeordnete, umlaufende Dichtfläche und eine in einer Ringnut des Grundkörpers des Kanalplattenadapters angeordnete Ringdichtung gebildet wird.according to view X of the Fig.2 , In detail, a radially acting sealing device which is formed by a arranged in the receptacle of the lid member, circumferential sealing surface and arranged in an annular groove of the main body of the channel plate adapter ring seal.

Die in Figur 1 dargestellte Offenend-Rotorspinnvorrichtung 1 verfügt über ein Rotorgehäuse 2, in dem ein Spinnrotor 3, dessen Mittenlängsachse mit der Bezugszahl 60 gekennzeichnet ist, mit hoher Drehzahl umläuft.
Im dargestellten Ausführungsbeispiel ist der Spinnrotor 3 mit seinem Rotorschaft 4 im Zwickel einer Stützscheibenlagerung 5 gelagert und wird über einen maschinenlangen Tangentialriemen 6, der durch eine Andrückrolle 7 in Anlage am Rotorschaft 4 gehalten wird, angetrieben. Das nach vorne an sich offene Rotorgehäuse 2 ist während des Spinnbetriebes durch ein Deckelelement 8 bzw. eine, wie üblich, in das Deckelelement 8 eingelassene Lippendichtung 9 verschlossen.
Das Rotorgehäuse 2 ist seinerseits über eine entsprechende Pneumatikleitung 10 an eine Unterdruckquelle 11 angeschlossen, die für beim Offenend-Spinnen benötigten Unterdruck im Rotorgehäuse 2 sorgt.
Das Deckelelement 8 verfügt über eine in Richtung des Rotorgehäuses 2 offene Aufnahme 31 mit einer konisch ausgebildeten Lagerfläche 44, in der ein Kanalplattenadapter 12 auswechselbar festlegbar ist.In the FIG. 1 Open-end rotor spinning device 1 shown has a rotor housing 2, in which a spinning rotor 3, whose central longitudinal axis is designated by the reference numeral 60, rotates at high speed.
In the illustrated embodiment, the spinning rotor 3 is mounted with its rotor shaft 4 in the gusset of a support disk bearing 5 and is driven by a machine-long tangential belt 6, which is held by a pressure roller 7 in contact with the rotor shaft 4. The rotor housing 2 which is open at the front per se is closed during the spinning operation by a cover element 8 or, as usual, a lip seal 9 embedded in the cover element 8.
The rotor housing 2 is in turn connected via a corresponding pneumatic line 10 to a vacuum source 11, which provides for required in open-end spinning negative pressure in the rotor housing 2.
The lid member 8 has an open in the direction of the rotor housing 2 receptacle 31 with a conical bearing surface 44 in which a channel plate adapter 12 is interchangeable fixed.

Der Kanalplattenadapter 12 weist einen turmartigen Fortsatz 26 sowie einen konisch ausgebildeten Grundkörper 27 auf.
Im turmartigen Fortsatz 26 ist dabei außer dem Mündungsbereich 32 eines Faserleitkanales 14 noch eine Fadenabzugsdüse 13 angeordnet, während der Grundkörper 27 eine konisch ausgebildete Lagerfläche 40 sowie einen rückseitigen, zentrischen Ansatz 33 aufweist.The channel plate adapter 12 has a tower-like extension 26 and a conically shaped main body 27.
In the tower-like extension 26, a yarn withdrawal nozzle 13 is arranged in addition to the mouth region 32 of a Faserleitkanales 14 while the main body 27 has a conical bearing surface 40 and a rear, centric projection 33.

Im Einbauzustand des Kanalplattenadapters 12 wird der Ansatz 33 durch ein Arretierungsmittel 34, beispielsweise einer Stabfeder, hinterfasst und dabei der Kanalplattenadapter 12 in Richtung R beaufschlagt.
In den zentrischen Ansatz 33 des Kanalplattenadapters 12 fasst außerdem ein Fadenabzugsröhrchen 15 ein, das außerdem an der Abdeckung 35 des Deckelelements 8 befestigt ist.In the installed state of the channel plate adapter 12, the projection 33 is gripped by a locking means 34, for example a bar spring, while the channel plate adapter 12 is acted upon in the direction R.
In the central extension 33 of the channel plate adapter 12 also includes a Fadenabzugsröhrchen 15, which is also attached to the cover 35 of the lid member 8.

An das um eine Schwenkachse 16 drehbar gelagerte Deckelelement 8 ist des Weiteren eine Faserbandauflöseeinrichtung 18 angeschlossen, die, wie bekannt, unter anderem eine Auflösewalze 21 und einen Faserbandeinzugszylinder 22 aufweist, die jeweils in Lagerkonsolen 19 beziehungsweise 20 des Schwenkgehäuses 8 gelagert sind.To the about a pivot axis 16 rotatably mounted cover member 8 further Faserbandauflöseeinrichtung 18 is connected, which, as is known, inter alia, an opening roller 21 and a sliver feed cylinder 22, which are respectively mounted in bearing brackets 19 and 20 of the pivot housing 8.

Die Auflösewalze 21 läuft, wie üblich, in einem Auflösewalzengehäuse 17 um, wobei der Antrieb der Auflösewalze 21 über einen maschinenlangen Tangentialriemen 24 erfolgt, der den Wirtel 23 der Auflösewalze 21 beaufschlagt.The opening roller 21 runs, as usual, in an opening cylinder housing 17, wherein the drive of the opening roller 21 via a machine-tangential belt 24 takes place, which acts on the whorl 23 of the opening roller 21.

Der Faserbandeinzugszylinder 22 wird vorzugsweise über ein Schneckenradgetriebe 36 von einer maschinenlangen Antriebswelle 25 angetrieben.The sliver feed cylinder 22 is preferably driven by a worm gear 36 from a machine-long drive shaft 25.

Das Auflösewalzengehäuse 17 der Faserbandauflöseeinrichtung 18 verfügt außerdem, wie üblich, über eine Schmutzaustrittsöffnung 28, über die Schmutzpartikel 29, die beim Zerlegen des Faserbandes in Einzelfasern frei werden, in eine zum Beispiel mechanisch arbeitende Schmutzentsorgungseinrichtung 30, abgeführt werden können.The opening roller housing 17 of the sliver disengaging device 18 also has, as usual, a dirt discharge opening 28, on the dirt particles 29, which are released when disassembling the sliver into individual fibers, in a, for example, mechanically operating dirt disposal device 30, can be removed.

Die Fig.2 zeigt das erfindungsgemäße Deckelelement 8 in einem größeren Maßstab, teilweise im Schnitt.
Wie ersichtlich, ist in einer Aufnahme 31, die konzentrisch zur Mittenlängsachse 60 eines in einem Rotorgehäuse 2 gelagerten, in Fig.2 nicht dargestellten Spinnrotors 3 angeordnet ist, auswechselbar ein Kanalplattenadapter 12 festgelegt.
Die Aufnahme 31 weist eine konisch ausgebildete Lagerfläche 44 auf, auf der der Kanalplattenadapter 12 mit einem Grundkörper 27, der eine entsprechend konisch ausgebildete Lagerfläche 40 aufweist, gelagert ist.
Der Grundkörper 27 des Kanalplattenadapters 12 verfügt dabei außerdem über einen zentrischen Ansatz 33, der das Deckelelement 8 nach hinten durchfasst und von einem Arretierungsmittel 34, zum Beispiel einer Stabfeder, in Richtung R beaufschlagt wird. Das heißt, die auf den zentrischen Ansatz 33 wirkende Stabfeder 34 positioniert den Kanalplattenadapter 12 lagegenau in der Aufnahme 31.The Fig.2 shows the lid member 8 according to the invention in a larger scale, partly in section.
As can be seen, in a receptacle 31 concentric with the central longitudinal axis 60 of a bearing in a rotor housing 2, in Fig.2 Not shown spinning rotor 3 is arranged, interchangeable a channel plate adapter 12 set.
The receptacle 31 has a conical bearing surface 44, on which the channel plate adapter 12 is mounted with a base body 27, which has a correspondingly conical bearing surface 40.
The main body 27 of the channel plate adapter 12 also has a central projection 33 which engages the cover element 8 to the rear and is acted upon by a locking means 34, for example a rod spring, in the direction R. That is, the rod spring 34 acting on the centric projection 33 positions the channel plate adapter 12 accurately in the receptacle 31.

Der Kanalplattenadapter 12 weist außerdem, wie an sich bekannt, im Bereich des größten Durchmessers seines Grundkörpers 27 eine Ringnut 41 auf, in der eine Ringdichtung 39 positioniert ist, die mit einer in Fig.3 und Fig.4 näher dargestellten, umlaufenden Dichtfläche 38 eine radial wirkende Dichteinrichtung 37 bildet.The channel plate adapter 12 also has, as is known, in the region of the largest diameter of its base body 27, an annular groove 41 in which a ring seal 39 is positioned, which is provided with a in Figure 3 and Figure 4 shown in detail, circumferential sealing surface 38 forms a radially acting sealing device 37.

Der Kanalplattenadapter 12 verfügt des Weiteren, wie üblich, über einen turmartigen Fortsatz 26, der den Mündungsbereich 32 eines Faserleitkanals 14 aufweist und eine Durchgangsbohrung besitzt, in der eine Fadenabzugsdüse 13 angeordnet ist.The channel plate adapter 12 further has, as usual, a tower-like extension 26, which has the mouth region 32 of a fiber guide channel 14 and has a through hole in which a yarn withdrawal nozzle 13 is arranged.

Die Fig.3 zeigt das erfindungsgemäße Deckelelement 8 mit ausgebautem Kanalplattenadapter 12.
Wie ersichtlich, weist die in das Deckelelement 8 integrierte Aufnahme 31 eingangsseitig, das heißt im Bereich ihrer Lagerfläche 44 eine umlaufende Dichtfläche 38 auf, die parallel zur Mittenlängsachse 60 eines (in Fig.3 nicht dargestellten) Spinnrotors angeordnet ist.The Figure 3 shows the cover element 8 according to the invention with the channel plate adapter 12 removed.
As can be seen, the integrated into the lid member 8 receptacle 31 on the input side, that is, in the region of its bearing surface 44, a circumferential sealing surface 38 which parallel to the central longitudinal axis 60 of a (in Figure 3 not shown) spinning rotor is arranged.

Wie in den Figuren 2 und 4 dargestellt, bildet die Dichtfläche 38 im Einbauzustand des Kanalplattenadapters 12 mit einer im Grundkörper 27 des Kanalplattenadapters 12 in einer Ringnut 41 angeordneten Ringdichtung 39 eine radial wirkende Dichteinrichtung 37.As in the Figures 2 and 4 illustrated, the sealing surface 38 forms in the installed state of the channel plate adapter 12 with a arranged in the base body 27 of the channel plate adapter 12 in an annular groove 41 ring seal 39 a radially acting sealing device 37th

Die Fig.4 zeigt in einem großen Maßstab den in Fig.2 mit X gekennzeichneten Bereich, das heißt, einen Schnitt durch den Bereich der radial wirkenden Dichteinrichtung 37.
Von der in das Deckelelement 8 integrierten Aufnahme 31 ist dabei der eingangsseitige Bereich deren Lagerfläche 40 dargestellt.
Wie ersichtlich, weist die Lagerfläche 40 im Bereich ihres maximalen lichten Durchmessers eine Ausnehmung auf, die eine umlaufende, parallel zur Mittenlängsachse 60 eines (nicht dargestellten) Spinnrotors 3 angeordnete Dichtfläche 38 bildet. Die Dichtfläche 38 weist dabei eine Länge 1 auf, die größer ist, als der Querschnitt S einer Ringdichtung 39, die in einer Ringnut 41 des Grundkörpers 27 eines zugehörigen Kanalplattenadapters 12 angeordnet ist.
Die Dichtfläche 38 weist außerdem, wie ersichtlich, in Bezug auf die Lagerfläche 40 eine maximal Tiefe t auf, die weniger als die halbe Stärke S der Ringdichtung 39 des Kanalplattenadapters 12 beträgt.
Im Einbauzustand des Kanalplattenadapters 12 liegt die Ringdichtung 39 an der Dichtfläche 38 der Aufnahme 31 des Deckel elements 8 an und bildet mit dieser eine das Rotorgehäuse zuverlässig abdichtende radial wirkende Dichteinrichtung.The Figure 4 shows on a large scale the in Fig.2 X, that is, a section through the region of the radially acting sealing device 37th
Of the integrated into the lid member 8 receptacle 31 while the input-side region whose bearing surface 40 is shown.
As can be seen, the bearing surface 40 in the region of its maximum clear diameter has a recess which forms a circumferential sealing surface 38 arranged parallel to the central longitudinal axis 60 of a spinning rotor 3 (not shown). The sealing surface 38 in this case has a length 1 which is greater than the cross section S of a ring seal 39, which is arranged in an annular groove 41 of the main body 27 of an associated channel plate adapter 12.
The sealing surface 38 also has, as can be seen, with respect to the bearing surface 40 to a maximum depth t, which is less than half the thickness S of the ring seal 39 of the channel plate adapter 12.
In the installed state of the channel plate adapter 12, the ring seal 39 is located on the sealing surface 38 of the receptacle 31 of the lid element 8 and forms with this one the rotor housing reliably sealing radially acting sealing device.

Die Erfindung soll allerdings nicht auf das in den Zeichnungen dargestellte Ausführungsbeispiel beschränkt werden.
Anstelle der beschriebenen Anordnung der Dichtfläche (38)im Bereich einer in der Aufnahme (31) des Deckelelements (8) angeordneten Ausnehmung kann eine die Dichtfläche aufweisende Ausnehmung auch im Grundkörper (27) eines Kanalplattenadapters (12) vorgesehen sein. In einem solchen Fall ist in einer Ringnut der Ausnahme eine elastische Ringdichtung installiert, die im Einbauzustand des Kanalplattenadapters mit der Dichtfläche eine radial wirkende Dichteinrichtung bildet.
Auch eine solche als alternative Ausführungsform anzusehende Ausbildung soll ausdrücklich als durch den Schutzbereich des Anspruchs 1 abgedeckte Ausführungsform angesehen werden.However, the invention should not be limited to the embodiment shown in the drawings.
Instead of the described arrangement of the sealing surface (38) in the region of a recess (31) of the cover element (8) arranged recess may be provided in the base body (27) of a channel plate adapter (12) has a sealing surface having recess. In such a case, an elastic ring seal is installed in an annular groove of the exception, which forms a radially acting sealing device with the sealing surface in the installed state of the channel plate adapter.
Such an embodiment to be regarded as an alternative embodiment is expressly to be regarded as an embodiment covered by the scope of claim 1.

Claims (5)

  1. Cap element of an open-end spinning machine for closing a rotor housing which is open towards the front and subject to suction, in which a spinning rotor rotates at high speed during the spinning process, wherein the cap element is provided with a mount in which a channel plate adapter is fixed so as to be removable, which comprises the mouth area of a fibre guiding channel, a through bore for arranging a thread take-off nozzle and a main body,
    characterised in that
    in the installed state of the channel plate adapter (12) between the mount (31) of the cap element (8) and the main body (27) of the channel plate adapter (12) a sealing device (37) is provided which has a peripheral sealing surface (38) which is arranged to be concentric to the central longitudinal axis (60) of the spinning rotor (3) rotating in the rotor housing (2) when the cap element is closed and against which an opposite elastic annular seal (39) is supported radially.
  2. Cap element according to claim 1, characterised in that the sealing device (37) is formed by the peripheral sealing surface (38), which is integrated into the mount (31) of the cap element (8), and an annular seal (39) is formed, which is arranged in an annular groove (41) of the main body (27) of the channel plate adapter (12).
  3. Cap element according to claim 1, characterised in that the sealing surface (38) is arranged in a recess in the input side section of a conically designed bearing surface (44) of the mount (31) of the cap element (8).
  4. Cap element according to claim 1, characterised in that the sealing surface (38) has an axial length (1) relative to the central axis of the spinning rotor, which length is greater than the cross section (S) of the annular seal (39) of the channel plate adapter (12).
  5. Cap element according to claim 1, characterised in that the recess has a maximum depth (t) relative to the conically designed bearing surface (44) of the mount (31), which depth is smaller than half the cross section (S) of the annular seal (39) of the channel plate adapter (12).
EP12007120.4A 2011-12-02 2012-10-13 Cap element of an open ended spinning machine for closing a rotor housing open to the front and subject to suction Active EP2599905B2 (en)

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DE201110120106 DE102011120106A1 (en) 2011-12-02 2011-12-02 Cover element of an open-end spinning device for closing an evacuated, forwardly open rotor housing

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Also Published As

Publication number Publication date
EP2599905A2 (en) 2013-06-05
EP2599905B2 (en) 2019-02-27
DE102011120106A1 (en) 2013-06-06
EP2599905A3 (en) 2015-04-08
CN103132184B (en) 2017-03-01
CN103132184A (en) 2013-06-05

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