EP0985754B1 - Drawing mechanism for spinning machines with a fibre condensing device - Google Patents

Drawing mechanism for spinning machines with a fibre condensing device Download PDF

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Publication number
EP0985754B1
EP0985754B1 EP99117320A EP99117320A EP0985754B1 EP 0985754 B1 EP0985754 B1 EP 0985754B1 EP 99117320 A EP99117320 A EP 99117320A EP 99117320 A EP99117320 A EP 99117320A EP 0985754 B1 EP0985754 B1 EP 0985754B1
Authority
EP
European Patent Office
Prior art keywords
condensing
apron
stripping
perforation
stripping edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99117320A
Other languages
German (de)
French (fr)
Other versions
EP0985754A1 (en
Inventor
Andreas Dr. Olbrich
Stefan Krawietz
Jürgen Schneider
Jörg Steger
Hermann Güttler
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
Zinser Textilmaschinen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zinser Textilmaschinen GmbH filed Critical Zinser Textilmaschinen GmbH
Publication of EP0985754A1 publication Critical patent/EP0985754A1/en
Application granted granted Critical
Publication of EP0985754B1 publication Critical patent/EP0985754B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H5/00Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/60Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/62Non-rotary cleaning pads or plates; Scrapers

Definitions

  • a stripping device in the form of a scraper edge from the DE 17 60 832 A1 known. However, it is not at a convex deflection area of the Straps arranged and can therefore only sufficient on smooth straps Develop a wiping effect.
  • the stripping device is also not with one Suction device connected so that stripped fiber material is only pushed on and will fall off at some point, being in for thread quality or for thread breaks sensitive areas.

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

Description

Die Erfindung betrifft ein Streckwerk für Spinnereimaschinen mit einer Verdichtungsvorrichtung am Ausgang, die ein endloses flexibles Verdichtungs-Riemchen aufweist, das auf seinem Umfang mit einer Perforation versehen ist und eine der beiden Ausgangswalzen und einen Saugkopf umschlingt, mittels dessen in einem Arbeitsbereich des Verdichtungs-Riemchens ein einen Faserverband an die Perforation ansaugender Unterdruck anlegbar ist.The invention relates to a drafting system for spinning machines with a Compression device at the exit, which has an endless flexible compression strap has a perforation on its circumference and a of the two output rollers and a suction head, by means of which in one Working area of the compression strappy a fiber bandage on the perforation suction vacuum can be applied.

Eine derartige Vorrichtung ist aus der DE 43 23 472 C2 oder der DE 296 00 417 U1 bekannt. Es hat sich gezeigt, daß bei einem derartigen Streckwerk im Falle eines Fadenbruches die weiterhin aus dem Ausgangswalzenpaaar auslaufenden Fasern nicht sicher durch die Fadenbruch-Absaugungvorrichtung erfaßt und abgeführt werden. Sie wickeln sich häufig um das Verdichtungs-Riemchen, zumal sie durch den Saugzug der Verdichtungsvorrichtung an die Perforation des Riemchens angesaugt sind. Auch die Reinigungswirkung einer über der Ausgangsoberwalze auf dem Riemchen aufliegenden Putzwalze reicht in aller Regel nicht aus, die Fasern abzulösen. Sie bauen sich zu einem immer dicker werdenden Wickel auf, der Streckwerkstcile beschädigen kann. Bisweilen lösen sich von diesem Wickel auch Teile ab, die an benachbarten Spindeln Fadenbrüche und in deren Gefolge sogar Reihenfadenbrüche auslösen können. Such a device is from DE 43 23 472 C2 or DE 296 00 417 U1 known. It has been shown that in such a drafting system in the case of a Thread break the fibers that continue to run out of the pair of output rollers can be safely detected and removed by the thread break suction device. she often wrap around the compression straps, especially as they are sucked in by the Compression device are sucked onto the perforation of the strappy. Also the Cleaning effect of an over the top roller on the apron a cleaning roller lying on top is generally not sufficient to detach the fibers. they build an increasingly thicker wrap that can damage the drafting system can. Occasionally, parts that are adjacent to one another also become detached from this winding Spindles cause thread breaks and in their wake even row thread breaks can.

Der Erfindung war demgemäß die Aufgabe gestellt, das Bilden eines derartigen Wickels zuverlässig zu verhindern oder zumindest zu begrenzen und von ihm verursachte Folgeschäden zu unterbinden. Sie löst diese Aufgabe durch die im Kennzeichen des Hauptanspruches angegebenen Merkmale.The invention was accordingly the object of forming such To prevent or at least limit the winding reliably and by him prevent consequential damage caused. It solves this task through the Characteristics of the main claim specified characteristics.

An Verzugs-Riemchen ist eine Abstreifvorrichtung in Form einer Abstreifkante aus der DE 17 60 832 A1 bekannt. Sie ist jedoch nicht an einem konvexen Umlenkbereich des Riemchens angeordnet und kann daher nur an glatten Riemchen ausreichende Abstreifwirkung entfalten. Die Abstreifvorrichtung ist auch nicht mit einer Absaugvorrichtung verbunden, so daß abgestreiftes Fasermaterial nur aufgeschoben wird und irgend wann abfällt, wobei es in für die Fadenqualität oder für Fadenbrüche sensible Bereiche geraten kann.On the straps is a stripping device in the form of a scraper edge from the DE 17 60 832 A1 known. However, it is not at a convex deflection area of the Straps arranged and can therefore only sufficient on smooth straps Develop a wiping effect. The stripping device is also not with one Suction device connected so that stripped fiber material is only pushed on and will fall off at some point, being in for thread quality or for thread breaks sensitive areas.

Durch die erfindungsgemäße Abstreifvorrichtung werden ein sich auf dem Verdichtungs-Riemchen bildender Wickel oder zumindest Teile desselben abgestreift und durch die Absaugeinrichtung abgesaugt. Dadurch wird das Anwachsen eines Wickels in gefährlichen Umfang und das Abdriften von Faseransammlungen in den Bereich benachbarter Spindeln verhindert. Die Abstreifvorrichtung ist vorteilhaft als Abstreifkante, insbesondere mit sich spitzwinklig schneidenden Seitenflächen ausgebildet.By the stripping device according to the invention Stripping forming compression straps or at least parts of the same stripped and sucked off by the suction device. This will make one grow Wraps to dangerous levels and the drifting of fiber accumulations in the Area of adjacent spindles prevented. The stripping device is advantageous as Scraper edge, especially with side surfaces intersecting at an acute angle educated.

Als Absaugvorrichtung wird vorteilhafterweise die in aller Regel vorhandene Fadenbruch-Absaugvorrichtung des Streckwerkes benutzt. Es kann jedoch auch eine gesonderte Absaugvorrichtung für die Abstreifvorrichtung vorgesehen werden.As a suction device, the one that is usually present is advantageously used Thread breakage suction device of the drafting system used. However, it can also be a separate suction device for the stripping device can be provided.

Die Abstreifkante kann am Verdichtungs-Riemchen anliegen. Um ein Beschädigen der Kanten der Perforationslöcher des Verdichtungs-Riemchens zu verhindern, ist jedoch in weiterer Ausgestaltung der Erfindung vorgesehen, zwischen der Abstreifkante und dem Verdichtungs-Riemchen einen - möglichst engen - Spalt zu lassen oder aber der Abstreifkante in Bereich der Perforation eine Aussparung zu geben, wobei die Abstreifkante seitlich der Perforation am Verdichtungs-Riemchen anliegen kann.The scraper edge can rest on the compression strap. To damage the Preventing edges of the perforation holes of the compression strap is, however provided in a further embodiment of the invention, between the scraper and to leave the compression straps a - as narrow as possible - gap or the To give scraping edge in the area of the perforation, the Scraper edge on the side of the perforation can lie against the compression strap.

Ein besonders wirksames Abstreifen wird dann erreicht, wenn die Abstreifkante im Bereich einer konvexen Umlenkung des Verdichtungs-Riemchens angeordnet ist, da das Wickelband in diesem Bereich ohnehin eine verstärkte Neigung aufweist, sich vom Verdichtungs-Riemchen abzuheben. Eine Umlenkung mit besonders engem Umlenkradius ergibt sich an einer der Walzen des Ausgangsstreckwerkes nachgeordneten Umlenkschiene. Wenn die Verdichtungsvorrichtung eine derartige Umlenkschiene nicht aufweist, ist die Abstreifkante am Umfang der Ausgangsoberoder Unterwalze angeordnet.A particularly effective wiping is achieved when the wiping edge in Area of a convex deflection of the compression strap is arranged because the winding tape in this area anyway has a greater tendency to move away from Lift off the compression straps. A redirection with a particularly tight Deflection radius results on one of the rollers of the original drafting system downstream deflection rail. If the compression device is one Deflection rail does not have, the scraper edge on the circumference of the exit upper or Lower roller arranged.

Wenn die Abstreifkante nicht am Verdichtungsriemchen anliegt, kann ihr Abstand zu diesem einstellbar ausgebildet sein. Bevorzugt ist vorgesehen, daß die Abstreifvorrichtung hierzu schwenkbar in ihrem Halter gelagert ist.If the scraper edge does not touch the compacting belt, its distance can be too be adjustable. It is preferably provided that the Scraper device is pivotally mounted in its holder for this purpose.

In den Figuren der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigen:

  • Fig. 1 den Querschnitt durch ein Verdichtungsstreckwerk;
  • Fig. 2 den Querschnitt durch ein Verdichtungsstreckwerk anderer Ausführungsform;
  • Fig. 3 die Ansicht der Abstreifvorrichtung von unten.
  • Exemplary embodiments of the invention are shown in the figures of the drawing. Show it:
  • 1 shows the cross section through a compression drafting device.
  • 2 shows the cross section through a compression drafting arrangement of another embodiment;
  • Fig. 3 shows the stripper from below.
  • Wie aus Fig. 1 erkennbar, umfaßt das Streckwerk 1 vier Walzenpaare 2, 3, 4 und 5, die jeweils aus einer Unterwalze 2', 3', 4' und 5' sowie einer Oberwalze 2", 3", 4" und 5" bestehen. Zwischen den Walzenpaaren 2 und 3 liegt das Vorverzugsfeld des Streckwerkes, zwischen den Walzenpaaren 3 und 4 das Hauptverzugsfeld. Die Walzen 3' und 3'' des Walzenpaares 3 sind von Verzugs-Riemchen 6 bzw. 6' umschlungen.As can be seen from Fig. 1, the drafting device 1 comprises four pairs of rollers 2, 3, 4 and 5, the each consisting of a lower roller 2 ', 3', 4 'and 5' and an upper roller 2 ", 3", 4 "and 5" consist. Between the roller pairs 2 and 3 is the pre-draft field of Drafting system, between the roller pairs 3 and 4 the main drafting zone. The rollers 3 'and 3' 'of the pair of rollers 3 are wrapped by delay straps 6 and 6', respectively.

    Dem Ausgangswalzenpaar 5 ist eine Verdichtungsvorrichtung 7 zugeordnet, die im wesentlichen ein Verdichtungs-Riemchen 8 und eine Saugkammer 9 umfaßt. Die Saugkammer 9 ist über eine Rohr- oder Schlauch-Leitung 10 mit einer nicht dargestellten Unterdruckquelle verbunden. Das Verdichtungs-Riemchen 8 ist in der Mitte um seinen Umfang mit einer Perforation 11 in Form einer Lochreihe versehen. Dieser Perforation 11 steht in der Saugkammer 9 in dem Bereich, in dem der durch das Streckwerk 1 laufende Faserverband 12 am Verdichtungs-Riemchen 8 anliegt, ein Schlitz oder eine Perforation gegenüber, durch die der Saugzug auf die Außenseite des Verdichtungs-Riemchens wirkt und den Faserverband ansaugt.The output roller pair 5 is assigned a compression device 7, which in essentially comprises a compression strap 8 and a suction chamber 9. The Suction chamber 9 is not connected to a pipe or hose line 10 vacuum source shown connected. The compression strap 8 is in the Provide a perforation 11 in the form of a row of holes in the center around its circumference. This perforation 11 is in the suction chamber 9 in the area in which the through the drafting system 1 running fiber structure 12 abuts the compression strap 8 Slit or perforation opposite through which the suction to the outside of the Compaction straps work and suck in the fiber structure.

    Erfindungsgemäß ist an dem hier nicht in allen Einzelheiten dargestellten Käfig 13, der die Saugkammer 9 in Bezug auf die Oberwalze 5' positioniert, eine Abstreifvorrichtung 14 in Form eines Stiftes 15 angeordnet, die eine spitzwinklige Abstreifkante 16 hat.According to the invention on the cage 13, which is not shown in all details here, the the suction chamber 9 positioned with respect to the top roller 5 ', one Scraper device 14 arranged in the form of a pin 15, which is an acute-angled Scraper edge 16 has.

    Die Abstreifkante 16 ist, wenn sie durchgehend ausgebildet ist, so angeordnet, daß sie einen geringen Abstand zum Verdichtungs-Riemchen 8 aufweist, also nicht auf diesem schleift. Sie entfernt in diesem Falle einen sich bildenden Wickel nicht vollständig vom Verdichtungs-Riemchen 8, sondern begrenzt dessen Wachstum. Wenn die Abstreifkante 16' gemäß Fig. 3 jedoch im Bereich der Perforation 11 eine Ausnehmung 17 aufweist, kann sie zu beiden Seiten der Perforation 11 am Verdichtungs-Riemchen 8 anliegen und einen Wickel zumindest in diesem Bereich vollständig von diesem abstreifen.The scraper edge 16, if it is continuous, is arranged so that it is at a short distance from the compression strap 8, ie not on it grinds. In this case, it does not completely remove a winding that is being formed from the compression straps 8, but limits its growth. If the Scraper edge 16 'according to FIG. 3, however, in the area of the perforation 11 Has recess 17, it can on both sides of the perforation 11 on Compression straps 8 and a wrap at least in this area completely strip off this.

    Das Streckwerk 1 weist eine Fadenbruch-Absaugvorrichtung auf, von der hier nur das Absaugröhrchen 18 dargestellt ist. Die Mündung dieses Absaugröhrchens 18 bzw. die Abstreifkante 16 ist so positioniert, daß sich die Absaugwirkung des Absaugröhrchens auch auf den Bereich der Abstreifvorrichtung 14 auswirkt und von dieser abgestreifte Faserzusammenballungen absaugt.The drafting device 1 has a thread break suction device, of which only that Suction tube 18 is shown. The mouth of this suction tube 18 and the Scraper edge 16 is positioned so that the suction effect of the suction tube also affects the area of the stripping device 14 and stripped by it Sucks up fiber clumps.

    Die Fig. 2 unterscheidet sich von Fig. 1 nur dadurch, daß das Verdichtungs-Riemchen 8 in Laufrichtung hinter der Oberwalze 5" um eine Umlenkschiene 19 geführt ist. Die Abstreifvorrichtung 14 ist in diesem Falle vorteilhaft derart angeordnet, daß die untere Fläche der Abstreifkante 16 in etwa in Verlängerung des Laufes des Verdichtungs-Riemchens 8 erstreckt. In diesem Falle wird der Abstreifeffekt der Abstreifvorrichtung vorteilhaft durch die Ablöseneigung eines Wickels am engen Umlenkradius des Verdichtungs-Riemchens 8 um die Umlenkschiene 19 unterstützt. Fig. 2 differs from Fig. 1 only in that the compression straps 8 is guided in the running direction behind the top roller 5 "around a deflection rail 19 Scraper 14 is advantageously arranged in this case such that the lower Surface of the scraper edge 16 approximately in extension of the run of the compression straps 8 extends. In this case, the stripping effect of the stripping device advantageous due to the tendency of a winding to detach at the narrow deflection radius of the Compaction straps 8 supported around the deflection rail 19.

    BezugszahlenlisteLIST OF REFERENCE NUMBERS

    11
    Streckwerkdrafting system
    22
    EingangswalzenpaarPair of input rollers
    3, 4, 53, 4, 5
    Walzenpaareroller pairs
    3', 4', 5'3 ', 4', 5 '
    Unterwalzenbottom rollers
    3'', 4", 5"3 '', 4 ", 5"
    Oberwalzentop rollers
    6, 6'6, 6 '
    Verzugs-RiemchenDelay-strap
    77
    Verdichtungsvorrichtungcompacting device
    88th
    Verdichtungs-RiemchenCondensing apron
    99
    Saugkammersuction chamber
    1010
    Rohr- oder SchlauchleitungPipe or hose line
    1111
    Perforationperforation
    1212
    Faserverbandfiber structure
    1313
    Käfig des Verdichtungs-RiemchensCage of the compression strappy
    1414
    Abstreifvorrichtungstripper
    1515
    Stiftpen
    16, 16'16, 16 '
    Abstreifkantestripping
    1717
    Ausnehmungrecess
    1818
    Absaugröhrchensuction tube
    1919
    Umlenkschienedeflection rail

    Claims (7)

    1. Drawframe for spinning machines with condensing devices at the pair of delivery rollers, the condensing devices each comprising an endless, flexible condensing apron which is provided on its circumference with a perforation and which loops around one of the two delivery rollers and a suction head, by means of which a vacuum sucking a composite fibre structure onto the perforation can be applied in a working region of the condensing apron, characterized in that the condensing apron (8) is assigned a stripping device (14), the stripping edge (16) of which is continuous and has a gap relative to the condensing apron (8) and is arranged in the effective range of a suction-extraction device (18).
    2. Drawframe according to Claim 1, characterized in that the stripping device (14) has an acute-angled stripping edge (16, 16').
    3. Drawframe according to Claim 1, characterized in that the stripping edge (16') has a recess (17) in the region of the perforation (11) of the condensing apron (8) and comes to bear on the condensing apron laterally of the recess.
    4. Drawframe according to Claim 1, characterized in that the stripping edge (16, 16') is arranged in the region of the narrow deflection of the condensing apron (8) around a deflecting rail.
    5. Drawframe according to Claim 1, characterized in that the distance between the stripping edge (16) and the condensing apron (8) is adjustable.
    6. Drawframe according to Claim 5, characterized in that the stripping edge (16, 16') is mounted pivotably.
    7. Drawframe according to Claim 1, characterized in that the effective range of a thread-break suction-extraction device (18) extends onto the stripping edge (16, 16').
    EP99117320A 1998-09-08 1999-09-03 Drawing mechanism for spinning machines with a fibre condensing device Expired - Lifetime EP0985754B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19840960 1998-09-08
    DE19840960A DE19840960B4 (en) 1998-09-08 1998-09-08 Drafting system for spinning machines with a compacting device

    Publications (2)

    Publication Number Publication Date
    EP0985754A1 EP0985754A1 (en) 2000-03-15
    EP0985754B1 true EP0985754B1 (en) 2003-04-23

    Family

    ID=7880207

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99117320A Expired - Lifetime EP0985754B1 (en) 1998-09-08 1999-09-03 Drawing mechanism for spinning machines with a fibre condensing device

    Country Status (4)

    Country Link
    US (1) US6158091A (en)
    EP (1) EP0985754B1 (en)
    JP (1) JP2000096358A (en)
    DE (2) DE19840960B4 (en)

    Families Citing this family (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE19921966B4 (en) * 1999-05-12 2011-02-10 Spindelfabrik Suessen Gmbh Device for compacting a stretched fiber structure
    DE19955525A1 (en) * 1999-11-18 2001-05-23 Fritz Stahlecker Sliver compaction arrangement for spinning machine drafting system includes pressurized air supply to blow outwards through perforated apron
    EP1106719A1 (en) * 1999-11-26 2001-06-13 MARZOLI S.p.A. Method and apparatus for drafting and condensing a roving, particularly in a ring spinning frame
    DE10008610A1 (en) * 2000-02-24 2001-08-30 Zinser Textilmaschinen Gmbh Sliver drawing unit has a condensing stage with a profiled shrouding facing the suction unit in a mounting with easy adjustment and which reduces the energy for the required suction to condense the sliver
    DE10127741C2 (en) * 2001-06-08 2003-05-08 Zinser Textilmaschinen Gmbh Drafting system for a spinning machine
    DE102009038267A1 (en) 2009-08-20 2011-02-24 Rotorcraft Ag Fiber guide for guiding fiber bundle into inlet of roller pair in drawing frame of spinning machine, has integrated magnetic elements for pressing guide against lower roller of output roller pair of drawing frame during operation of frame
    JP6577684B1 (en) * 2019-02-04 2019-09-18 株式会社Itoi生活文化研究所 Japanese paper thread manufacturing apparatus and Japanese paper thread manufacturing method

    Family Cites Families (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE1251194B (en) * 1967-09-28
    US3141203A (en) * 1958-12-31 1964-07-21 Ideal Ind Method and means for clearing textile rolls
    US3251101A (en) * 1964-02-06 1966-05-17 Deering Milliken Res Corp Suction clearer
    DE1760832A1 (en) * 1968-07-06 1972-03-09 Zinser Textilmaschinen Gmbh Cleaning device for drafting elements
    DE2042387A1 (en) * 1970-08-26 1972-04-20 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Method and device for producing a staple fiber yarn
    DE2533655C2 (en) * 1974-10-09 1986-11-27 Toray Industries, Inc., Tokio/Tokyo Spinning machine for the production of bundled yarn
    US4274179A (en) * 1979-06-18 1981-06-23 Progressive Equipment, Inc. Spinning frame apron clearer attachment
    DE3509338A1 (en) * 1985-03-15 1986-09-18 Fritz 7347 Bad Überkingen Stahlecker MAINTENANCE DEVICE MOVABLE ALONG A SPINNING MACHINE WITH A FLUSH COLLAR NEEDLE
    DE3927936A1 (en) * 1988-09-29 1990-04-05 Fehrer Ernst DEVICE FOR PRODUCING A YARN
    DE3927739A1 (en) * 1989-08-23 1991-02-28 Fritz Stahlecker METHOD AND DEVICE FOR WRAPPING SPIN
    DE4037006A1 (en) * 1990-11-21 1992-05-27 Stahlecker Fritz Spinning frame - has increased suction and hot air treatment at time of stoppage to remove accumulation of fibre at drafting zone output roller
    US5400583A (en) * 1992-05-22 1995-03-28 The De Williams Company Yarn lap preventor for a take-up shaft in open end spinning machine
    DE4323472C2 (en) * 1993-07-14 1997-08-07 Inst F Textil Und Verfahrenste Double apron drafting system
    DE29600417U1 (en) * 1996-01-11 1996-03-07 Zinser Textilmaschinen Gmbh, 73061 Ebersbach Drafting system for a spinning machine

    Also Published As

    Publication number Publication date
    JP2000096358A (en) 2000-04-04
    DE19840960B4 (en) 2004-05-19
    EP0985754A1 (en) 2000-03-15
    DE59905155D1 (en) 2003-05-28
    DE19840960A1 (en) 2000-03-09
    US6158091A (en) 2000-12-12

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