EP0341405B1 - 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

Info

Publication number
EP0341405B1
EP0341405B1 EP89105194A EP89105194A EP0341405B1 EP 0341405 B1 EP0341405 B1 EP 0341405B1 EP 89105194 A EP89105194 A EP 89105194A EP 89105194 A EP89105194 A EP 89105194A EP 0341405 B1 EP0341405 B1 EP 0341405B1
Authority
EP
European Patent Office
Prior art keywords
yarn
twist
false
pull
pair
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
EP89105194A
Other languages
German (de)
English (en)
Other versions
EP0341405A1 (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
Application filed by W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
Publication of EP0341405A1 publication Critical patent/EP0341405A1/fr
Application granted granted Critical
Publication of EP0341405B1 publication Critical patent/EP0341405B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to a method for improving a yarn produced in the rotor of an open-end spinning device with real wire, passed through a yarn draw-off nozzle and then passed through a pair of draw-off rollers, the yarn being deflected only to one side at a yarn deflection point after passing through the yarn take-off nozzle, and a device for performing the method.
  • DE-A 36 09 114 discloses a device for open-end spinning with a twist element, a yarn take-off nozzle, a yarn take-off device and with a deflection downstream of the yarn take-off nozzle in the yarn take-off direction, which has at least one false twist edge.
  • a further deflection is arranged after the deflection following the thread withdrawal direction of the thread withdrawal nozzle, which deflects the thread in a direction deviating from the direction of the previous deflection.
  • EP-A1 0 279 434 which is considered to be state of the art according to Article 54 (3) and (4) EPC, provides that the device known from the previous state of the art is further developed by the fact that between the last false twist edge and the pull-off roller pair a false wire device through which the yarn is arranged.
  • the false wire device has a device for generating a cyclone flow rotating about the longitudinal axis of the yarn. By means of this, the running yarn is provided with a false wire reinforcing the real wire on the feed side.
  • a yarn of the same type is produced in the comparable device of DE-A1 35 39 383.
  • a generic open-end spinning device is known in which the thread is deflected within the draw-off tube and is pulled over so-called false-wire ribs.
  • These ribs which extend in the same direction as the rotation of the thread at the deflection point of the thread, Increase the real wire applied by the rotor by additionally applying false wire on the route from the rotor groove to the deflection point and thereby improve the stability of the spinning process. Due to the increased stability of the thread formation, the thread formation process and thus also the withdrawal speed of the thread can be increased. Such an increase in productivity, however, leads to the thread becoming too hard to handle for certain applications, as in the previous devices.
  • the invention is based on the object of improving the spinning result and also of giving the fabric produced from the spun yarn, in particular knitted fabric or knitted fabric, a softer feel.
  • the object with respect to the method is achieved in that, before passing through the draw-off roller pair, a rotational movement directed in the direction of the real wire is applied by means of a cyclone flow caused by a false-wire device, so that the outer fiber ends of the yarn between the false-wire device and the draw-off roller pair spreading thread balloon is generated, wherein according to the device known from GB-A 2 127 442 the deflection of the thread takes place only at a yarn deflection point in the yarn take-off nozzle.
  • EP-A1 0 279 434 it is known to excite the yarn to form a fiber-expanding yarn balloon by means of a device for generating a cyclone flow rotating about the yarn longitudinal axis.
  • a further deflection at a second false twist edge introduces such a strong rotation into the thread beforehand that the subsequent loosening and spreading of the fiber ends in the fiber balloon can be difficult.
  • the running yarn is advantageously exposed to a cyclone flow after deflection.
  • the running yarn is advantageously provided with a false wire reinforcing the real wire on the feed side by means of the cyclone flow.
  • the yarn Before passing through the cyclone flow, the yarn receives a stronger wire and thus a stronger twist build-up.
  • the piece of yarn running between the cyclone flow and the clamping point formed by the pair of draw-off rollers is set in vibration and subjected to centrifugal forces which result in the outer fiber ends being spread apart from the fiber structure.
  • the yarn is directed to its side on false twist edges arranged at an angle to the thread run, and after passing the last false twist edge arranged at an angle to the thread path and before passing through the pair of draw-off rollers, the running yarn is subjected to a yarn movements and / or vibrations that spread out leading false wire is forced, the outer fiber ends of the running yarn are radially spread.
  • the yarn produced in this way is characterized by a higher hairiness and leads to the desired softer feel in the finished article.
  • the running yarn is caused to spread fibers after deflection by forcing centrifugal forces. As is known, centrifugal forces prevail in a thread balloon.
  • the object of the invention is achieved in that between a yarn deflection point and the draw-off roller pair, a false wire device through which the yarn passes is arranged, which has the formation of fiber-spreading vibrations and / or centrifugal forces in the existing between the false wire device and the clamping point formed by the take-off rollers Has piece of yarn enabling distance from the pair of draw rollers.
  • the outer fiber ends spread apart from the fiber structure and this is the cause of the greater hairiness, which leads to a softer feel in the finished article, which is particularly advantageous for 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.
  • a curved tube, through which the yarn passes, is advantageously arranged, to which the false wire device connects.
  • the false wire device provides a device for generating a cyclone flow rotating about the longitudinal axis of the yarn.
  • the device for generating the cyclone flow advantageously has a tube through which the yarn passes, into which at least one tangential channel carrying compressed air opens.
  • the direction of rotation of the cyclone advantageously 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.
  • FIG. 1 a longitudinal section through a device according to the invention
  • Fig. 2 an alternative embodiment of the yarn deflection point
  • Fig. 3 a further alternative embodiment of the yarn deflection point
  • Fig. 4 a section along the line IV drawn in Fig. 3 -IV.
  • 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 rim 5 and under a cover 6 covering the rotor 2 is continuously vented through.
  • a yarn take-off nozzle 7 is inserted centrally, to which a tube 9, which is bent to one side, here upwards, from the thread path is connected to a yarn deflection point, designated overall by 33, with the interposition of a yarn guide funnel 8.
  • the tube 9 has two consecutive, diagonally arranged to the thread run, the free tube cross-section, which is otherwise circular, on the tube curvature line 10 having the smallest radius of curvature constricting false twist edges 11, 12.
  • the false twist edges 11, 12 are formed by pins which are at an angle to the thread run lying, penetrating the tube jacket holes are used so that they protrude from the tube radius line 10 having the least 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 tube 18 connects to tube 9 and protrudes a bit into 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 draw-off roller pair 20, 21, the yarn 17 is wound up 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 twist insert 26 which serves as a device for generating a cyclone flow Z and which has four tangential channels 27 which run slightly inclined against 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 connection 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 and 12 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 undergoes a wire reinforcement in the yarn section 17 'located in front of the pneumatic fiber spreading device 19 and a counter-twist in the yarn section 17' 'located between the pneumatic false twisting 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 clamping point given by the draw-off roller pair 20, 21, and the real wire that the rotor 2 as yarn producer now issues to the yarn 17 with great spinning stability remains.
  • a simple curved tube 34 is present at the yarn deflection point 33, and its end piece 35 is inserted into the connector 16 with the addition of a seal 36.
  • the tube 18 directly adjoins the tube 34.
  • the tube 37 which is also provided with an end piece 35, is curved over an angle alpha and cut out on its inside over the same angle alpha up to the middle. Fits in the neckline a curved and ribbed ceramic insert 39, which is glued into a plastic clip 38.
  • the clip with its four feet 40, 41 can be clipped easily and securely over the curved tube 37 in such a way that the ceramic insert 39 fits into the tube cutout, its ribs projecting approximately to the center of the tube and for that Form running twist accumulation elements.

Landscapes

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

Claims (6)

  1. Procédé pour améliorer un fil qui est produit avec une torsion permanente dans le rotor d'un métier à filer à fibres libérées, qui est conduit à travers une buse d'appel du fil et qui passe ensuite entre une paire de cylindres d'appel, cependant que la torsion permanente impartie au fil par le rotor est renforcée par une fausse torsion orientée dans la direction de ce fil, le fil étant dévié à cette fin vers un côté seulement dans un endroit de déviation du fil après qu'il est passé par la buse d'appel du fil, caractérisé par le fait que la fausse torsion est impartie avant le passage par la paire de cylindres d'appel au moyen d'un écoulement tourbillonnaire produit par un dispositif de fausse torsion, et ce, d'une manière telle qu'un ballonnement du fil qui écarte radialement les extrémités extérieures des fibres du fil soit engendré entre le dispositif de fausse torsion et la paire de cylindres d'appel.
  2. Procédé selon la revendication 1, caractérisé par le fait que le fil est dévié vers un côté sur des arêtes de fausse torsion disposées obliquement par rapport au trajet du fil.
  3. Dispositif pour améliorer un fil qui est produit avec une torsion permanente dans le rotor (2) d'un métier à filer à fibres libérées, qui est conduit à travers une buse (7) d'appel du fil et qui passe ensuite entre une paire de cylindres d'appel (20, 21), cependant qu'il est prévu en aval de la buse d'appel du fil un endroit de déviation du fil qui est pourvu d'arêtes de fausse torsion (11, 12), qui dévie le fil vers un côté seulement et qui peut renforcer par une fausse torsion la torsion permanente impartie par le rotor (2), pour la mise en oeuvre du procédé selon la revendication 1 ou 2, caractérisé par le fait qu'entre la ou les arêtes de fausse torsion (11, 12) de l'endroit de déviation du fil (33) et la paire de galets d'appel (20, 21) est disposé un dispositif de fausse torsion (19) parcouru par le fil (17) et comportant un dispositif (26) destiné à engendrer un écoulement tourbillonnaire (Z) qui tourne autour de l'axe longitudinal du fil et dont le sens de rotation coïncide avec le sens de la torsion permanente du fil (17), de sorte que la partie (17') du fil qui est située du côté de l'amenée présente une fausse torsion qui renforce la torsion permanente, et par le fait qu'il existe entre le dispositif de fausse torsion (19) et le point de serrage constitué par la paire de cylindres d'appel (20, 21) une distance par rapport à la paire de cylindres d'appel (20, 21) qui permet de former sur la partie (17'') du fil un ballonnement du fil qui écarte les fibres.
  4. Dispositif selon la revendication 3, caractérisé par le fait que des arêtes de fausse torsion (11, 12) disposées obliquement par rapport au trajet du fil sont présentes à l'endroit de déviation du fil (33).
  5. Dispositif selon la revendication 3 ou 4, caractérisé par le fait que l'endroit de déviation du fil (33) comporte un tube coudé (34, 37) qui est parcouru par le fil (17) et auquel se raccorde le dispositif de fausse torsion (19).
  6. Dispositif selon l'une quelconque des revendications 3 à 5, caractérisé par le fait que le dispositif (26) destiné à engendrer l'écoulement tourbillonnaire (Z) comporte un tube qui est parcouru par le fil et dans lequel débouche au moins un canal tangentiel (27) amenant de l'air comprimé.
EP89105194A 1988-04-08 1989-03-23 Procédé et dispositif pour améliorer un fil fabriqué dans le rotor d'un métier à filer à bout libre Expired - Lifetime EP0341405B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3811739A DE3811739A1 (de) 1988-04-08 1988-04-08 Verfahren und vorrichtung zum verbessern eines in dem rotor einer offenend-spinnvorrichtung erzeugten garns
DE3811739 1988-04-08

Publications (2)

Publication Number Publication Date
EP0341405A1 EP0341405A1 (fr) 1989-11-15
EP0341405B1 true EP0341405B1 (fr) 1994-07-27

Family

ID=6351588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89105194A Expired - Lifetime EP0341405B1 (fr) 1988-04-08 1989-03-23 Procédé et dispositif pour améliorer un fil fabriqué dans le rotor d'un métier à filer à bout libre

Country Status (3)

Country Link
EP (1) EP0341405B1 (fr)
JP (1) JPH02242926A (fr)
DE (2) DE3811739A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4023397A1 (de) * 1990-07-23 1992-01-30 Ssm Ag Verfahren zum spinnen von fasern zu garn sowie spinnvorrichtung zur durchfuehrung des verfahrens
DE4039755A1 (de) * 1990-12-13 1992-06-17 Schlafhorst & Co W Garnabzugseinrichtung einer oe-rotorspinnvorrichtung
DE19915924B4 (de) * 1999-04-09 2009-12-10 Rieter Ingolstadt Gmbh Fadenführungsrohr
DE102004061740A1 (de) * 2004-12-22 2006-07-06 Rieter Ingolstadt Spinnereimaschinenbau Ag Verfahren und Vorrichtung zur Erhöhung der Fadenfestigkeit
DE102010033666A1 (de) * 2010-08-06 2012-02-09 Rheinisch-Westfälische Technische Hochschule Aachen Verfahren und Vorrichtung zur Herstellung eines Fasergarns
DE102020101840A1 (de) * 2020-01-27 2021-07-29 Maschinenfabrik Rieter Ag Fadenführungseinheit, Offenend-Rotorspinnmaschine und Verfahren zum Betreiben einer Spinnstelle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1510730B2 (de) * 1960-10-28 1976-11-18 Ausscheidung in: 17 85 715 Meimberg, Julius, 4400 Münster Offen-end-spinnvorrichtung
CS223961B2 (en) * 1978-03-28 1983-11-25 Alsacienne Constr Meca Facility for knitting the released fibres
DE3207136C2 (de) * 1982-02-27 1994-03-17 Schlafhorst & Co W Verfahren und Vorrichtung zum Herstellen eines Fadens durch Offen-End-Spinnen
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
JPS61113831A (ja) * 1984-11-06 1986-05-31 Murata Mach Ltd 紡績糸の製造方法および装置
DE3609114C2 (de) * 1986-03-19 1995-11-30 Schlafhorst & Co W Vorrichtung zum OE-Spinnen mit einem Spinnrotor
DE3705479A1 (de) * 1987-02-20 1988-09-01 Schlafhorst & Co W Verfahren und vorrichtung zum verbessern eines in dem rotor einer offenend-spinnvorrichtung erzeugten garns

Also Published As

Publication number Publication date
JPH02242926A (ja) 1990-09-27
DE3811739A1 (de) 1989-10-19
DE58908091D1 (de) 1994-09-01
EP0341405A1 (fr) 1989-11-15

Similar Documents

Publication Publication Date Title
DE4225243C2 (de) Spinnvorrichtung
DE2620118B2 (de) Vorrichtung zum Spinnen von Fasergarn
WO2007033717A1 (fr) Groupe de buses a air destine a un dispositif de filage a buses a air
DE1760568A1 (de) Verfahren und Vorrichtung zum Spinnen von Fasermaterial unter Verwendung einer Rotationsspinnkammer
CH678635A5 (fr)
EP1223236B1 (fr) Dispositif pour la production d'un fil d'âme
EP0279434B1 (fr) Procédé et dispositif pour améliorer un fil fabriqué dans le rotor d'un métier à filer à bout libre
EP0224435A2 (fr) Procédé de fabrication d'une nappe de filaments continus et appareil pour la mise en oeuvre du procédé
CH687767A5 (de) Spinnverfahren.
DE3207136A1 (de) Verfahren und vorrichtung zum herstellen eines fadens
EP0341405B1 (fr) Procédé et dispositif pour améliorer un fil fabriqué dans le rotor d'un métier à filer à bout libre
DE2140157A1 (de) Fadenabzugsrohr fuer eine offen-endspinnvorrichtung
EP0121602A1 (fr) Dispositif de fausse-torsion
EP1431432B1 (fr) Dispositif pour produire un filet
DE3345170A1 (de) Verfahren und vorrichtung zur herstellung von seelengarn aus einem faserbaendchen
DE4039755A1 (de) Garnabzugseinrichtung einer oe-rotorspinnvorrichtung
DE2424769C2 (de) Vorrichtung zum pneumatischen Falschdrallspinnen
EP0415295B1 (fr) Procédé de filage à fausse torsion et dispositif pour la mise en oeuvre de ce procédé
DE3810860A1 (de) Verfahren und vorrichtung zum turbulenzspinnen zur herstellung von faserbuendelgarn
DE3103510C2 (de) Vorrichtung zum pneumatischen Falschdrallspinnen
CH660033A5 (de) Verfahren zum spinnen eines garnes aus zwei unterschiedlichen stapelfaser-komponenten und nach dem verfahren hergestelltes garn.
EP0468132A2 (fr) Procédé de fabrication de bougies filtrantes à suie
DE3441982C2 (fr)
DE2913645A1 (de) Duese zum verflechten von multifilamentfaeden
DE2552000A1 (de) Gegenlaeufiges spinnverfahren und vorrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR IT LI

17P Request for examination filed

Effective date: 19900315

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: W. SCHLAFHORST AG & CO.

17Q First examination report despatched

Effective date: 19910906

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR IT LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940727

REF Corresponds to:

Ref document number: 58908091

Country of ref document: DE

Date of ref document: 19940901

EN Fr: translation not filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950412

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19950505

Year of fee payment: 7

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960331

Ref country code: CH

Effective date: 19960331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19961203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050323