EP0422615B1 - Métier à filer à bout libre - Google Patents

Métier à filer à bout libre Download PDF

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Publication number
EP0422615B1
EP0422615B1 EP90119422A EP90119422A EP0422615B1 EP 0422615 B1 EP0422615 B1 EP 0422615B1 EP 90119422 A EP90119422 A EP 90119422A EP 90119422 A EP90119422 A EP 90119422A EP 0422615 B1 EP0422615 B1 EP 0422615B1
Authority
EP
European Patent Office
Prior art keywords
thread
open
end spinning
notches
spinning apparatus
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
EP90119422A
Other languages
German (de)
English (en)
Other versions
EP0422615A3 (en
EP0422615A2 (fr
Inventor
Ulrich Rödiger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau AG
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 Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP0422615A2 publication Critical patent/EP0422615A2/fr
Publication of EP0422615A3 publication Critical patent/EP0422615A3/de
Application granted granted Critical
Publication of EP0422615B1 publication Critical patent/EP0422615B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D01H4/40—Removing running yarn from the yarn forming region, e.g. using tubes

Definitions

  • the present invention relates to an open-end spinning device according to the preamble of claim 1.
  • the invention has for its object to produce hairy yarns with high spinning stability and thus economically.
  • the present invention is based on the finding that surprising effects with regard to the spinning stability and hairiness of the yarn can be achieved by a suitable combination of notches in the draw-off nozzle with projections in the thread draw-off tube. It has also been shown that it is important that the position the notches to the projections in the thread take-off tube must always be the same in order to obtain identical yarns at the different spinning positions. An optimal allocation results if the arrangement of the notches is exactly between the projections in the thread take-off tube with respect to a surface line. A notch that lies on the same surface line of the nozzle with a projection cannot have a stabilizing effect on the spinning process, since the thread does not come into sufficient contact with the notch due to the action of the projection located in the thread take-off tube.
  • a regular alternating contact of the thread between the notch and the projection allows on the one hand a stable spinning and on the other hand causes the desired hairy yarn.
  • the term "protrusions" also includes elevations that arise through recesses in the lateral surface of the thread take-off channel.
  • an open-end spinning device has, as essential elements, a feed device 1, a dissolving device designed as an opening roller 51, a spinning element designed as a spinning rotor 54, a thread take-off device 6 designed as a thread take-off roller pair 6 and a thread winding device 7.
  • the feed device 1 has a feed roller 11 with which a feed trough 12 cooperates elastically.
  • the opening roller 51 of the opening device is mounted in a housing 56 which, in the exemplary embodiment shown, has a dirt separating opening 52 in its peripheral wall. Viewed in the fiber transport direction after the dirt separation opening 52, a fiber feed channel 53 begins, which extends into the spinning rotor 54.
  • the spinning rotor 54 is arranged in a housing 58 which is connected to a vacuum source (not shown) via a vacuum line 55 in order to generate a spinning vacuum.
  • the thread winding device 7 has a winding roller 71, from which a coil 72 is driven.
  • a thread take-off channel 9 projects into the housing 58, the projections 92 of which are arranged downstream of the mouth part 91 pointing towards the rotor, viewed in the thread take-off direction.
  • a sliver 8 is fed via the feed trough 12 from the feed roller 11 to the opening roller 51.
  • the opening roller 51 dissolves the sliver 8 into individual fibers 82.
  • the fibers 82 are brought into the fiber collecting groove 541 of the spinning rotor 54 by means of the spinning negative pressure, and from there as thread 83 via the mouth 91 and the projections 92 of the thread take-off channel 9, the thread 83 drawn off from the rotor by the interaction of the notches of the mouth 91 and the protrusions 92 of the thread take-off channel 9 are fluffed up, pulled off as hairy thread 84 by means of a pair of thread take-off rollers 6 and conveyed to the winding device 7.
  • the thread end of the thread 83 which is pulled out of the rotor groove 541 actually wants to rotate like a crank around the thread take-off channel axis (which is essentially identical to the rotor axis).
  • This thread end is prevented from smoothly brushing the funnel-shaped mouth 91 by notches 911.
  • the yarn 83 is plucked by projections 92 located in the thread take-off channel 9 and is thereby brought into a hairy state.
  • the hairiness arises e.g. T. in that external fibers not fully integrated in the thread are partially detached from the thread assembly and protrude outwards.
  • Notches 911 are uniformly distributed in a circle in the funnel-shaped mouth 91 of the thread take-off channel 9, the base of the notch preferably being at an angle of 45 ° to the thread take-off channel axis.
  • This mouth part 91 is followed by a further part, which contains the projections 921.
  • the projections 921 extend from the end of the mouth funnel 91 in the thread take-off direction.
  • the projections 921 are expediently arranged in each case between two notches 911, an arrangement exactly on the bisector of the angles, which in each case form two notches 911 following one another in the thread circulation, having proven particularly advantageous. It is also possible to arrange the projections of the thread take-off channel opening without taking into account the position of notches 711 and projections 921 relative to one another. It is also possible to provide an intermediate space between the end of the mouth in the thread take-off direction and the start of the projections, in which there are no projections 92 in the thread take-off channel 9.
  • the projections are expediently rounded off in the region of the transition of the thread from the funnel-shaped mouth into the subsequent part of the thread take-off channel 9 in order to prevent damage to the yarn.
  • the configuration of 4 protrusions 921, arranged behind 4 notches 911, has proven to be advantageous for the constantly increasing rotor speeds - over 100,000 rpm - and the ever smaller rotor diameters - 30 mm and less.
  • the thread 83 drawn out of the rotor 54 moves over the surface of the mouth funnel 91 of the thread withdrawal channel 9 and experiences doing a false twist. This false twist is partially removed when and after passing a notch 911.
  • the thread 83 advantageously loses some false twist. This effect is significantly supported by the action of a projection 92, which additionally prevents the thread from undisturbed overflow of the thread take-off channel 9 adjoining the mouth funnel 91.
  • the projections arranged exactly "in the middle" between two notches 911 simultaneously have the effect of roughening the thread 83, the extent seen in the direction of the thread take-off channel determining the degree of hairiness.
  • Figure 3 shows the thread take-off, influenced by the notches 911 and the projections 921.
  • the thread 83 is in a position a 'between the projection 921d and the projection 921a, and is in contact with the latter.
  • the "crank" formed by the thread rotates in accordance with the thread take-off direction of rotation (arrow R) until, in position a ′′, the thread is unrolled and, as a result, the thread unrolls and thus converts (a ′′ ′′) the projection 921a.
  • the thread jumps between projection 921a and projection 921b in position b '. This cycle is shown again with the positions b 'to c'.
  • the configuration of the projections as webs 921 extending over a certain length in the thread take-off direction is advantageously suitable for a knitting yarn quality of medium number, as shown in FIG.
  • a suitable hairiness is obtained with the same spinning stability and other thread data reached. So it is possible to use fine yarns by; As shown in FIG. 4, as projections formed radially into the thread take-off channel 9, pins 923 achieve sufficient hairiness without otherwise damaging the yarn structure.
  • These short protrusions can e.g. B. also be formed as a bead or cam.
  • the surface of the mouth 91 of the thread take-off channel 9 is designed in such a way that the area 912 lying between the notches 911 merges seamlessly into the projections designed as webs 921.
  • FIGS. 4 and 5 A further advantageous embodiment of the invention is shown in FIGS. 4 and 5.
  • the mouthpiece 91 with the attached projections 92 is also advantageous to design the mouthpiece 91 with the attached projections 92 as a one-piece component 94, a particular advantage being that the component 94 can be produced in an economical manner from highly wear-resistant ceramic material due to the simple shape.
  • Another advantageous embodiment of the invention is a one-piece arrangement made of investment casting.
  • the notches 915 are curved in the shape of a sickle.
  • This crescent-shaped design advantageously enables the "jumping behavior" of the thread 83 to be influenced over the surface of the mouth 91 of the thread take-off channel 9.
  • the thread 83 describes a spatial curve which is indicated in FIG. 6 and which shows the curvature of the notches 915 can be adapted essentially in an advantageous manner.
  • the advantage is that when the yarn 83 passes the respective notch 915, its entire area extending over the length of the notch gets into the notch at the same time, and in this area it is simultaneously lit and caused to jump.
  • FIG. 7 shows a thread take-off nozzle 94 which is provided with a bush 940.
  • This socket is cylindrical on the inside and 941 on the outside.
  • Thread take-off nozzle and bushing are connected to one another in a rotationally and axially fixed manner.
  • the thread take-off nozzle designed in this way is screwed into the rotor housing cover, not shown.
  • FIG. 8 shows a thread take-off nozzle 94 which is provided in one piece with an external thread and can be made of ceramic.

Landscapes

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

Claims (13)

  1. Dispositif de filature à fibres libérées comportant une buse (94) de sortie de fil, qui présente une embouchure (91) en forme d'entonnoir, laquelle embouchure (91) présente des entailles (911) uniformément réparties sur la périphérie, et des saillies (92) sont disposées derrière (dans le sens de retrait du fil) l'embouchure (91) en forme d'entonnoir, le dispositif comprenant aussi un canal (9) de sortie de fil qui prolonge la buse (94) de sortie de fil, dispositif caractérisé en ce que les saillies (92) ont la configuration de nervures (921) ; le nombre des entailles (911) correspond au nombre des nervures (921) et à chaque fois une nervure (921) est disposée au milieu entre deux entailles (911).
  2. Dispositif de filature à fibres libérées selon la revendication 1, caractérisé en ce que les nervures (921) sont arrondies dans la zone de passage du fil de l'embouchure (91) en forme d'entonnoir dans la partie du canal (9) de sortie de fil qui en constitue le prolongement.
  3. Dispositif de filature à fibres libérées selon la revendication 1 ou 2, caractérisé en ce que quatre nervures (921) sont associées à quatre entailles (911, 915).
  4. Dispositif de filature à fibres libérées selon une ou plusieurs des revendications 1 à 3, caractérisé en ce que la surface (912) de l'embouchure (91) se prolonge entre les entailles (911, 915) sans interruption ni gradin par la surface des nervures (921) faisant saillie radialement dans la lumière du canal (9) de sortie de fil.
  5. Dispositif de filature à fibres libérées selon une ou plusieurs des revendications 1 à 4, caractérisé en ce que la buse (94) de sortie de fil consiste en une matière céramique dont les nervures (921) font partie intégrante.
  6. Dispositif de filature à fibres libérées selon une ou plusieurs des revendications 1 à 5, caractérisé en ce que la pièce d'embouchure (91) consiste en un alliage pour coulée de précision.
  7. Dispositif de filature à fibres libérées selon une ou plusieurs des revendications 1 à 6, caractérisé en ce qu'au moins les zones, en contact avec le filé, du canal (9) de sortie de fil ont fait l'objet d'un traitement antiusure.
  8. Dispositif de filature à fibres libérées selon une ou plusieurs des revendications 1 à 7, caractérisé en ce que les entailles (911, 915) sont incurvées.
  9. Dispositif de filature à fibres libérées selon la revendication 8, caractérisé en ce que les entailles (911, 915) sont adaptées à la courbure du fil (83) qui passe sur ces entailles.
  10. Dispositif de filature à fibres libérées selon une ou plusieurs des revendications 1 à 9, caractérisé en ce que la buse (94) de sortie de fil est réalisée en une seule pièce.
  11. Dispositif de filature à fibres libérées selon une ou plusieurs des revendications 1 à 10, caractérisé en ce que le canal (9) de sortie de fil comporte un filetage extérieur.
  12. Dispositif de filature à fibres libérées selon l'une ou plusieurs des revendications 1 à 11, caractérisé en ce que le canal (9) de sortie de fil est disposé dans une douille (940) essentiellement tubulaire, qui comporte pour sa part au moins un filetage.
  13. Dispositif de filature à fibres libérées selon la revendication 12, caractérisé en ce que la douille (940) présente un filetage extérieur.
EP90119422A 1989-10-12 1990-10-10 Métier à filer à bout libre Expired - Lifetime EP0422615B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3934166A DE3934166C2 (de) 1989-10-12 1989-10-12 Offenend-Spinnvorrichtung
DE3934166 1989-10-12

Publications (3)

Publication Number Publication Date
EP0422615A2 EP0422615A2 (fr) 1991-04-17
EP0422615A3 EP0422615A3 (en) 1991-10-02
EP0422615B1 true EP0422615B1 (fr) 1994-12-21

Family

ID=6391376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90119422A Expired - Lifetime EP0422615B1 (fr) 1989-10-12 1990-10-10 Métier à filer à bout libre

Country Status (2)

Country Link
EP (1) EP0422615B1 (fr)
DE (2) DE3934166C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6035625A (en) * 1997-09-03 2000-03-14 W. Schlafhorst Ag & Co. Yarn withdrawal nozzle
US6886322B2 (en) 2003-07-16 2005-05-03 W. Schlafhorst Ag & Co. Yarn withdrawal nozzle
CN100507105C (zh) * 2003-04-14 2009-07-01 里特机械公司 气流纺纱装置的落纱嘴
DE10255723B4 (de) * 2002-04-06 2012-06-06 Oerlikon Textile Gmbh & Co. Kg Fadenabzugsdüse
DE10393063B4 (de) * 2002-05-17 2017-09-21 Ilias Efthimiou Fadenabzugsdüse

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19906111A1 (de) * 1999-02-13 2000-10-05 Felix Backmeister Faden-Abzugsdüse in einer Open-End-Spinnmaschine
DE19949533A1 (de) * 1999-10-14 2001-04-19 Schlafhorst & Co W Offenend-Rotorspinnvorrichtung
US6477826B2 (en) * 2001-01-11 2002-11-12 Sara Lee Corporation Open end spun, cotton/rayon blended yarn
DE10305794B4 (de) * 2003-02-10 2012-01-19 Maschinenfabrik Rieter Ag Garnabzugsdüse für Offenend-Rotorspinnvorrichtungen
DE102004013828B4 (de) * 2004-03-15 2007-03-15 Wilhelm Stahlecker Gmbh Garnabzugsdüse für eine Offenend-Rotorspinnvorrichtung
DE102004036953B4 (de) * 2004-07-21 2012-11-08 Wilhelm Stahlecker Gmbh Garnabzugsdüse für eine Offenend-Rotorspinnvorrichtung
DE102011002972A1 (de) 2010-06-25 2011-12-29 Rieter Ingolstadt Gmbh Fadenabzugsdüse
CN214529446U (zh) * 2021-03-16 2021-10-29 江苏纳斯卡新材料科技有限公司 一种倍捻机纱线磨毛装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL130261C (fr) * 1960-07-28
DE1560302C3 (de) * 1966-08-24 1981-11-26 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Offen-End-Spinnvorrichtung
DE2445206C3 (de) * 1974-09-21 1980-04-03 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Fadenabzugsrohr für eine Offenendspinnmaschine
DE2544721A1 (de) * 1975-10-07 1977-04-14 Feldmuehle Anlagen Prod Vorrichtung zum verspinnen
DE3419300C2 (de) * 1984-05-24 1987-01-15 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Fadenabzugsrohr
US4712369A (en) * 1987-05-11 1987-12-15 Burckhardt America, Inc. Yarn treating device for open-end spinning frames

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6035625A (en) * 1997-09-03 2000-03-14 W. Schlafhorst Ag & Co. Yarn withdrawal nozzle
DE19738382B4 (de) * 1997-09-03 2006-03-09 Saurer Gmbh & Co. Kg Fadenabzugsdüse
DE10255723B4 (de) * 2002-04-06 2012-06-06 Oerlikon Textile Gmbh & Co. Kg Fadenabzugsdüse
DE10393063B4 (de) * 2002-05-17 2017-09-21 Ilias Efthimiou Fadenabzugsdüse
CN100507105C (zh) * 2003-04-14 2009-07-01 里特机械公司 气流纺纱装置的落纱嘴
US6886322B2 (en) 2003-07-16 2005-05-03 W. Schlafhorst Ag & Co. Yarn withdrawal nozzle

Also Published As

Publication number Publication date
EP0422615A3 (en) 1991-10-02
DE3934166A1 (de) 1991-04-25
DE59008072D1 (de) 1995-02-02
DE3934166C2 (de) 1994-06-09
EP0422615A2 (fr) 1991-04-17

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