EP0279434B1 - Procédé et dispositif pour améliorer un fil fabriqué dans le rotor d'un métier à filer à bout libre - Google Patents

Procédé et dispositif pour améliorer un fil fabriqué dans le rotor d'un métier à filer à bout libre Download PDF

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Publication number
EP0279434B1
EP0279434B1 EP88102323A EP88102323A EP0279434B1 EP 0279434 B1 EP0279434 B1 EP 0279434B1 EP 88102323 A EP88102323 A EP 88102323A EP 88102323 A EP88102323 A EP 88102323A EP 0279434 B1 EP0279434 B1 EP 0279434B1
Authority
EP
European Patent Office
Prior art keywords
yarn
false twist
pull
twist
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
EP88102323A
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German (de)
English (en)
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EP0279434A1 (fr
Inventor
Heinz-Georg Wassenhoven
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
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
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Application filed by W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
Publication of EP0279434A1 publication Critical patent/EP0279434A1/fr
Application granted granted Critical
Publication of EP0279434B1 publication Critical patent/EP0279434B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/90—Arrangements with two or more spinning or twisting devices of different types in combination
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor

Definitions

  • the invention relates to a method for improving a yarn produced in a rotor of an open-end spinning device with real wire, the yarn following a deflection following the yarn withdrawal direction of the yarn take-off nozzle on at least one false twist edge arranged obliquely to the thread path, a further deflection at another, at an angle to False twist edge arranged in the thread path is experienced, which deflects the yarn in a direction deviating from the direction of the previous deflection, which is then drawn off by a pair of draw-off rollers, and a device for carrying out the method.
  • DE-A1 36 09 114 which does not form part of the prior art, shows a device for open-end spinning, in which a deflection is arranged after the yarn take-off nozzle in the yarn take-off direction and has at least one false twist edge. After the deflection following the yarn draw-off nozzle, there is a further deflection which deflects the yarn in a direction deviating from the direction of the preceding deflection. With the false twist edge of the first deflection, which lies obliquely in the withdrawal path of the thread and has approximately an inclination which corresponds to the rotation of the thread, it is achieved that the false wire generated by the withdrawal nozzle cannot easily overcome this edge.
  • a false twist edge has the result that there is a greater twist in the thread between this edge and the withdrawal groove of the rotor. This increases the spinning stability, which means that the risk of thread breakage in the thread collecting channel is reduced.
  • the articles made from this yarn are characterized by a somewhat hard grip.
  • DE-A1 35 39 383 discloses the use of a cyclone flow to produce a false wire that reinforces the real wire.
  • Fibers are wrapped around the thread, creating so-called abdominal bandages. This does not produce a hairy yarn.
  • the invention has for its object to improve the spinning result of an open-end spinning device and to give the fabric made from the spun yarn, in particular knitwear or knitwear, a soft feel.
  • this object is achieved by a method according to claim 1.
  • the yarn Before the point of application of the cyclone flow, the yarn receives a stronger wire, after the point of application a weaker wire.
  • a thread balloon is generated in the yarn piece running between the cyclone flow and the clamping point formed by the pair of draw-off rollers. Due to the centrifugal forces in the less twisted yarn, outer fiber ends are spread apart from the fiber structure. As a result of the outer fiber ends being spread apart, the yarn thus produced is advantageously distinguished by a higher hairiness and leads the finished article to the desired softer feel.
  • the object of the invention is achieved in that between the last false twist edge and the pair of draw-off rollers of a device known from DE-A1 36 09 114, a false-wire device traversed by the yarn it is arranged that the false wire device has a device for generating a cyclone flow rotating about the longitudinal axis of the yarn and that between the false wire device and the clamping point formed by the pair of draw-off rollers there is a distance from the pair of draw-off rollers which enables the yarn piece to form a fiber-spreading thread balloon.
  • the outer thread ends spread out in the part of the fiber structure in which there is a weaker twist, and this is the cause of the greater hairiness, which leads to a softer feel in the finished article, which is particularly advantageous in the case of knitted fabrics and knitted fabrics.
  • the yarn take-off speed can be high with a relatively low twist, so that the invention also increases the productivity of the open-end spinning device, the overall spinning result being better than in the prior art.
  • the device for generating the cyclone flow advantageously has a tube through which the yarn passes, into which at least one tangential duct carrying compressed air opens.
  • the direction of rotation of the cyclone coincides with the direction of rotation of the real wire of the yarn, so that the feed-side yarn section has a false wire reinforcing the real wire.
  • the drawing shows a longitudinal section through a device according to the invention.
  • the open-end spinning device designated as a whole by 1, has a rotor 2, in the fiber collecting groove 3 of which spinning fibers are continuously introduced in a manner not shown here, while the rotor interior in the direction of arrow 4 over the rotor edge 5 and under a cover 6 covering the rotor 2 is continuously vented through.
  • a yarn take-off nozzle 7 is inserted centrally in the cover 6, to which a pipe 9 bent from the thread course is connected to one side, here upwards, with the interposition of a yarn guide funnel 8.
  • the tube 9 has three consecutive, oblique to the thread run, the free tube cross-section, which is circular in the rest, on the tube curvature line 10 having the smallest radius of curvature constricting false twist edges 11, 12, 13.
  • the false twist edges 11, 12, 13 are formed by pins, the bores lying at an angle to the thread path and penetrating the tubular jacket are inserted in such a way that they protrude from the tube jacket line 10 having the smallest radius of curvature into the free cross section of the tube 9, as the drawing shows, in particular using the example of the false twist edge 11.
  • the tube 9 is pressed into a cylindrical socket 16 of the cover 6 with the addition of a sealing ring 15.
  • another false twist edge 14 which is also arranged obliquely to the thread run. It directs the yarn 17 produced in the rotor 2, which first passes through the yarn take-off nozzle 7, is then deflected upward from its running direction by the false twist edges 11, 12 and 13, now again to the opposite side from its direction.
  • the false twist edge 14 is located at the sloping end of another tube 18 on the yarn input side, which extends into the tube 9 at an angle to the tube axis of the tube 9.
  • a pneumatic false wire device 19 connects to the tube 18.
  • the yarn 17 passes through the false wire device 19 and then through a pair of draw-off rollers 20, 21.
  • the draw-off roller 20 can be driven by means of a shaft 22 in the direction of the arrow 23, while the draw-off roller 21 with a pressing force as a contact roller running against friction against the draw-off roller 20 or the yarn 17 can be created.
  • the yarn 17 After passing through the pair of draw rollers 20, 21, the yarn 17 is wound into a bobbin in a manner not shown here.
  • the pneumatic false wire device 19 consists of a cladding tube 24 into which an annular channel 25 is incorporated.
  • the cladding tube 24 is pressed onto the tube 18. It has a tubular swirl insert 26 which serves as a device for generating a cyclone flow Z and which has four tangential channels 27 which extend slightly at an angle to the yarn running direction at the level of the ring channel 25.
  • the swirl insert 26 is held in the cladding tube 24 by a screw connection 28.
  • the screw connection 28 carries a yarn outlet tube 29 which is widened like a funnel toward the yarn outlet side.
  • the cladding tube 24 has a threaded bore into which a hose connection piece 30 is screwed.
  • a compressed air hose 31 terminates in the hose connecting piece and leads to a compressed air source via a switchable valve (not shown here).
  • the yarn take-off direction is indicated by an arrow 32.
  • the false twist edges 11 to 14 are aligned so that their direction coincides with the direction of the yarn wire present on the respective edge.
  • the orientation of the tangential channels 27 also takes into account the yarn wire, so that the cyclone flow Z acts clockwise on the yarn 17 with right-hand wire and left-handed with left-handed wire.
  • the running yarn 17 experiences a wire reinforcement in the yarn section 17 ⁇ lying in front of the pneumatic fiber spreading device 19 and a counter-twist in the yarn section 17 ⁇ lying between the pneumatic false wire device 19 and the pair of draw-off rollers 20, 21.
  • the false wire dissolves after leaving the cyclone flow Z at the latest at the nip point given by the draw-off roller pair 20, 21 and the real wire, which the rotor 2 as yarn producer now issues to the yarn 17 with great spinning stability, remains.

Claims (3)

  1. Procédé pour améliorer un fil (17) fabriqué, avec torsion réelle, dans le rotor (2) d'un métier à filer (1) à fibres libérées, le fil (17) étant soumis à une première déviation dans la direction d'extraction du fil, après la buse (7) d'extraction du fil, sur au moins une arête de fausse torsion (11, 12, 13) disposée à l'oblique par rapport au défilement du fil, caractérisé par le fait que le fil est soumis à une autre déviation, sur une autre arête de fausse torsion (14) qui est disposée à l'oblique par rapport au défilement du fil, et dévie ce fil dans une direction s'écartant de la direction de la déviation précédente, lequel fil est ensuite prélevé par l'intermédiaire d'une paire de cylindres préleveurs (20, 21); par le fait qu'un mouvement de rotation orienté dans la direction de la torsion réelle est imprimé au fil (17) en défilement, après qu'il a été dévié sur la dernière arête de fausse torsion (14) et avant le franchissement de la paire de cylindres préleveurs (20, 21) au moyen d'un courant d'air tourbillonnaire (Z) engendré par un dispositif de fausse torsion (19) ; et par le fait qu'un ballon de fil, déployant radialement les extrémités externes des fibres du fil, est formé entre le dispositif de fausse torsion (19) et la paire de cylindres préleveurs (20, 21).
  2. Dispositif pour améliorer un fil (17) fabriqué, avec torsion réelle, dans le rotor (2) d'un métier à filer (1) à fibres libérées, présentant une buse (7) d'extraction du fil et au moins une arête de fausse torsion (11, 12, 13) qui se rattache à ladite buse et est disposée à l'oblique par rapport au défilement du fil, en vue de dévier ce fil (17) dans une direction caractérisé par le fait qu'une autre arête de fausse torsion (14), disposée à l'oblique par rapport au défilement du fil, est prévue dans la continuité afin de dévier le fil (17) dans une direction s'écartant de la déviation précédente ; par le fait qu'un dispositif de fausse torsion (19), parcouru par le fil (17), est interposé entre la dernière arête de fausse torsion (14) et la paire de cylindres préleveurs (20, 21) ; par le fait que le dispositif de fausse torsion (19) possède un dispositif (26) pour engendrer un courant d'air tourbillonnaire (Z) tournant autour de l'axe longitudinal du fil ; et par le fait qu'un intervalle est réservé vis-à-vis de la paire de cylindres préleveurs (20, 21), entre le dispositif de fausse torsion (19) et le point de coincement formé par ladite paire de cylindres préleveurs (20, 21), ledit intervalle permettant au bout de fil (17'') de former un ballon de fil ayant pour effet de déployer les fibres.
  3. Dispositif selon la revendication 2, caractérisé par le fait que le dispositif (26) destiné à engendrer le courant d'air tourbillonnaire (Z) comporte un tube qui est parcouru par le fil (17), et dans lequel débouche au moins un canal tangentiel (27) délivrant de l'air comprimé ; et par le fait que le sens de rotation du courant d'air tourbillonnaire (Z) coïncide avec le sens de rotation de la torsion réelle du fil (17), de sorte que le tronçon de fil (17') situé côté arrivée présente une fausse torsion renforçant la torsion réelle.
EP88102323A 1987-02-20 1988-02-18 Procédé et dispositif pour améliorer un fil fabriqué dans le rotor d'un métier à filer à bout libre Expired - Lifetime EP0279434B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873705479 DE3705479A1 (de) 1987-02-20 1987-02-20 Verfahren und vorrichtung zum verbessern eines in dem rotor einer offenend-spinnvorrichtung erzeugten garns
DE3705479 1987-02-20

Publications (2)

Publication Number Publication Date
EP0279434A1 EP0279434A1 (fr) 1988-08-24
EP0279434B1 true EP0279434B1 (fr) 1991-09-11

Family

ID=6321427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102323A Expired - Lifetime EP0279434B1 (fr) 1987-02-20 1988-02-18 Procédé et dispositif pour améliorer un fil fabriqué dans le rotor d'un métier à filer à bout libre

Country Status (5)

Country Link
US (1) US4829762A (fr)
EP (1) EP0279434B1 (fr)
JP (1) JP2604781B2 (fr)
DE (2) DE3705479A1 (fr)
IT (1) IT1215916B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5323599A (en) * 1988-04-08 1994-06-28 W. Schlafhorst & Co. Process and apparatus for producing hairiness in an open-end spinning yarn
DE3811739A1 (de) * 1988-04-08 1989-10-19 Schlafhorst & Co W Verfahren und vorrichtung zum verbessern eines in dem rotor einer offenend-spinnvorrichtung erzeugten garns
DE3824283C1 (fr) * 1988-07-16 1989-10-26 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt, De
US5437147A (en) * 1992-08-20 1995-08-01 Burckhardt America, Inc. Open end spinning device
DE4235024C2 (de) * 1992-10-16 1996-07-25 Rieter Ingolstadt Spinnerei Fadenabzugsrohr
DE4334485A1 (de) * 1993-10-09 1995-04-13 Schlafhorst & Co W Offenend-Spinnvorrichtung
DE4418723C1 (de) * 1994-05-28 1995-08-31 Rieter Ingolstadt Spinnerei Offenend-Rotorspinnvorrichtung
DE19718768A1 (de) * 1997-05-05 1998-11-12 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum pneumatischen Reinigen eines Fadenabzugsrohres
DE19915924B4 (de) * 1999-04-09 2009-12-10 Rieter Ingolstadt Gmbh Fadenführungsrohr
US7870891B2 (en) * 2004-05-29 2011-01-18 Kilr-Chilr, Llc Systems, devices and methods for regulating temperatures of tanks, containers and contents therein
CN103343408B (zh) * 2013-07-05 2016-01-20 宜宾纬络纺织有限公司 转杯纺纱加捻工艺
DE102014107181A1 (de) * 2014-05-21 2015-11-26 Maschinenfabrik Rieter Ag Falschdrallvorrichtung für eine Offenendspinnvorrichtung

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2130722B2 (de) * 1971-06-21 1976-04-15 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Vorrichtung zum offenend-spinnen von textilfasern
GB1569123A (en) * 1976-01-26 1980-06-11 Mackie & Sons Ltd J Open-end spinning machines
CS223961B2 (en) * 1978-03-28 1983-11-25 Alsacienne Constr Meca Facility for knitting the released fibres
JPS58120825A (ja) * 1981-12-29 1983-07-18 Toyoda Autom Loom Works Ltd オ−プンエンド精紡機の糸引出装置
DE3207136C2 (de) * 1982-02-27 1994-03-17 Schlafhorst & Co W Verfahren und Vorrichtung zum Herstellen eines Fadens durch Offen-End-Spinnen
DE3220402C2 (de) * 1982-05-29 1985-03-21 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und Vorrichtung zum Herstellen eines mit einer OE-Rotorspinnmaschine gesponnenen Garns
FR2532665A1 (fr) * 1982-09-08 1984-03-09 Alsacienne Constr Mat Tex Perfectionnement aux dispositifs de filature de fibres liberees
GB2147618B (en) * 1983-08-19 1987-04-15 Howa Machinery Ltd Process and apparatus for preparing fasciated spun yarns
FR2560228A1 (fr) * 1984-02-24 1985-08-30 Asa Sa Dispositif pour l'obtention d'un file de fibres
JPS60199924A (ja) * 1984-03-21 1985-10-09 Asahi Chem Ind Co Ltd 紡毛糸調嵩高紡績糸の製造方法
FR2566810B1 (fr) * 1984-06-28 1986-09-12 Inst Textile De France Procede et dispositif perfectionnes de filature du type a fibres liberees
JPS61113831A (ja) * 1984-11-06 1986-05-31 Murata Mach Ltd 紡績糸の製造方法および装置
EP0220546A1 (fr) * 1985-10-15 1987-05-06 Maschinenfabrik Rieter Ag Dispositif de filature à bout libre
DE3609114C2 (de) * 1986-03-19 1995-11-30 Schlafhorst & Co W Vorrichtung zum OE-Spinnen mit einem Spinnrotor

Also Published As

Publication number Publication date
DE3864694D1 (de) 1991-10-17
US4829762A (en) 1989-05-16
EP0279434A1 (fr) 1988-08-24
IT1215916B (it) 1990-02-22
DE3705479A1 (de) 1988-09-01
IT8819461A0 (it) 1988-02-18
JPS63295723A (ja) 1988-12-02
JP2604781B2 (ja) 1997-04-30

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