EP1266056A2 - Procede d'insertion d'un fil elastomere et systeme de traitement de fils - Google Patents

Procede d'insertion d'un fil elastomere et systeme de traitement de fils

Info

Publication number
EP1266056A2
EP1266056A2 EP01936113A EP01936113A EP1266056A2 EP 1266056 A2 EP1266056 A2 EP 1266056A2 EP 01936113 A EP01936113 A EP 01936113A EP 01936113 A EP01936113 A EP 01936113A EP 1266056 A2 EP1266056 A2 EP 1266056A2
Authority
EP
European Patent Office
Prior art keywords
thread
delivery device
positive
weaving machine
speed
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.)
Granted
Application number
EP01936113A
Other languages
German (de)
English (en)
Other versions
EP1266056B1 (fr
Inventor
Kurt Arne Gunnar Jacobsson
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.)
Iropa AG
Original Assignee
Iropa 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 Iropa AG filed Critical Iropa AG
Publication of EP1266056A2 publication Critical patent/EP1266056A2/fr
Application granted granted Critical
Publication of EP1266056B1 publication Critical patent/EP1266056B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins

Definitions

  • the invention relates to a method for inserting an elastomer thread and a thread processing system.
  • a longitudinally elastic elastomer thread can be processed in knitting machines by removing it from the thread supply by a positive delivery device and delivering it to the knitting system.
  • weaving machine delivery devices have only been able to process so-called covered elastomer yarns with limited longitudinal elasticity.
  • Braided elastomer threads have a stretching behavior with a "knee", from which the braiding takes effect. With each insertion process, the thread is stretched up to this knee, so that the thread can be inserted under relatively stable conditions.
  • Uncovered or bare elastomer yarns, e.g. Natural rubber or elastomer threads cannot be processed in weaving machines because of their extreme elasticity with weaving machine weft delivery devices.
  • the production of wound elastomer threads using special spinning processes is expensive.
  • the invention has for its object to provide a method for entering an elastomer thread in a weaving machine and a thread processing system suitable for performing the method, with which it is possible to reliably produce longitudinally elastic elastomer thread material regardless of the extensibility in the weaving machine as a weft thread to process.
  • the elastomer thread is delivered from the thread supply to the defenseless weaving machine in such a way that it is first removed from the thread supply with a positive thread delivery and then in adjacent windings with a winding speed synchronized with the positive delivery speed and thus in a certain ratio, and thereby buffered with stretch and finally released for each entry in a predetermined entry length. Since the synchronization between the positive delivery speed and the winding speed for the intermediate save the turns regardless of the extensibility of the thread in the turns a certain stretch in the thread is adjustable, and the stretch can also be controlled by the length dimensioning for each entry, the loom can process the thread regardless of its stretchability.
  • uncovered elastomer thread material can be processed in unprotected weaving machines.
  • Uncovered elastomer threads are inexpensive to manufacture and offer a greater degree of freedom in terms of fabric elasticity in the weft direction. This can be beneficial for stretch denim (stretch jeans).
  • the uncovered, very stretchy elastomer thread does not need to be inserted with every weft, or can even be inserted together with a normal thread on the same weft, for example for the production of a plated fabric.
  • the positive delivery device and the thread intermediate storage and measuring delivery device cooperate with one another in such a way that in the windings temporarily stored for intermittent consumption by the weaving machine, an essentially uniform stretch that can also be adjusted by the speed adjustment between the positive thread delivery and the winding up is observed. Since the weaving machine only enters the thread in precisely dimensioned longitudinal sections, one longitudinal section per entry, a desired stretch can also be set in the weft thread. Elongation in the remaining temporarily stored windings cannot decrease towards the weaving machine. During the entry, the turns towards the weaving machine are not under positive control, but then the pull-off force and the friction during take-off act, which largely prevent relaxation which is reflected back into the turns.
  • the entry length shorter than the weaving width of the weaving machine.
  • a certain elongation can be set in the weft thread in the fabric, for example approximately 300%.
  • the stretch in the weft thread is preserved in the fabric, so to speak, by closing the compartment after the stop.
  • the stretch in the thread in the temporarily stored windings can be kept essentially constant by measuring the length of the entry during the entries and in the pauses in between. This means that when the thread supplied by the positive delivery device is wound up by the length measuring device or when the thread is pulled in at the same time, the thread is essentially not withdrawn from the weaving machine.
  • the thread supplied by the positive delivery device is wound up by the length measuring device or when the thread is pulled in at the same time, the thread is essentially not withdrawn from the weaving machine.
  • a positive delivery device that works with a driven conveyor roller pressed onto a rotatable thread reel, the drive of which runs synchronously with the winding drive and unwinds the thread.
  • the positive delivery device can be attached to the measuring delivery device and e.g. via a belt drive or a gear.
  • the relation between the positive delivery speed and the winding speed should be adjustable.
  • the stretched thread is wound on a stationary storage body in adjacent turns, expediently with thread separation, ie, axial spacing between adjacent turns.
  • the thread is held with stretch between the winding element and the stop element. With each entry, only the specific thread length is released, the pulling force and the friction on the storage body acting until the stop element supports the remaining thread turns in a form-fitting manner against relaxation. This is done by Release of a length proportionally adjusted to the weaving width, the stretch in the weft thread in the fabric is adjusted.
  • a controlled thread brake which, e.g. in the handover phase from the bringer gripper to the slave gripper, a certain braking effect is temporarily carried out to support the handover operation.
  • a monitoring device is expedient, which scans the thread without contact and does not generate any appreciable additional friction.
  • a stop signal is sent to the weaving machine.
  • FIG. 1 is a schematic view of a thread processing system for an elastomer thread
  • Fig. 2 is a speed-time or rotation angle diagram
  • FIG. 3 shows a detailed variant of FIG. 1.
  • a thread processing system S in FIG. 1 comprises a thread supply V for a longitudinally elastic elastomer thread Y, as a thread delivery device F a positive delivery device P and a thread intermediate storage and measurement delivery device M downstream thereof, optionally a downstream, controlled thread brake B, and as a thread-consuming textile machine, a defenseless weaving machine W, preferably a rapier weaving machine with a rapier rapier 1 and a slave rapier 2, which pass the thread Y approximately in the middle of a compartment 3 upon entry.
  • the grippers 1, 2 form an insertion device E of the weaving machine W.
  • the weaving machine W could also be a projectile weaving machine.
  • the thread Y is longitudinally elastic, for example an uncovered elastomer thread (bare elastomer yarn), made of natural rubber or elastomer.
  • the positive delivery device P which is only indicated schematically in FIG. 1, has, for example, a delivery roller 4 wrapped once or several times by the thread Y and a counter roller 5 which can be driven in rotation by a drive 6.
  • a monitoring device can be provided downstream or upstream of the positive delivery device.
  • a controlled variable sampling device could cooperate with the drive 6 in order to either remove the thread Y from the supply 1 with constant elongation or to feed it to the measuring delivery device M. The monitoring or scanning device is not shown.
  • the thread intermediate storage and measuring delivery device M has in a housing a winding element 7 which can be driven by an electric drive motor 8 and a stationary storage body 9 for the thread Y temporarily stored thereon in adjacent turns by the winding element 7.
  • the storage body 9 is expediently provided with devices not shown equipped for thread separation. Sensors D monitor the number of thread turns or the size of the intermediate store on the storage body 9 and transmit signals to a control device C of the drive motor 8.
  • a dimensioning device A is provided for measuring the length of the thread Y drawn off by the weaving machine W for each entry, for example has a stationary stop device 10 and a stop element 11 movable between a stop position cooperating with the storage body 9 and a retracted release position.
  • the storage body 9 can be designed with an adjustable diameter.
  • the measuring device A can be connected to the control device C.
  • the thread brake B for example a deflection brake, has a drive 12 which is expediently also connected to the control device C.
  • the weaving machine W is assigned a control device C1, which is connected to the control device C.
  • the drive 6 of the positive delivery device P is also connected to the control device C in order to set the positive delivery speed and the winding speed with the same phase and a specific relation to one another. The relation should be changeable.
  • the positive delivery device P is driven proportionally and in phase (synchronously) like the winding element 7 of the measuring delivery device.
  • the drive motor 8 is accelerated, decelerated or stopped, for example as a function of signals from the sensors D, in order to always temporarily store a number of turns on the storage body 9 that meet the current or even the expected consumption of the weaving machine W.
  • the control device C1 transmits a signal to the control device C (or the stop device 10 directly) in order to move the stop element 11 from the stop position into the release position.
  • the number of turns drawn off at the entry is registered, for example by a take-off sensor (not shown).
  • the stop element 11 is moved back to the stop position sufficiently early, for example via the control device C, in order to maintain the set entry length.
  • the thread brake B is actuated, for example by the control device C, in order to brake the thread during the transition phase, in which the carrier gripper 1 transfers the thread Y to the slave gripper 2.
  • the diagram in FIG. 2 shows how the drive motor 8 accelerates from standstill according to curve 13, is brought to high speed and is finally decelerated to a standstill.
  • the dashed curve 14 shows the proportionally lower speed of the positive delivery device P.
  • entries are initiated, for example, depending on the weaving pattern.
  • the stop element 11 is moved from the stop position into the release position and then, ie before the entry length is reached, is returned to the stop position.
  • the phase is expediently set, ie the positive delivery device starts and stops at the same time as the winding element 7.
  • 3 shows an embodiment of a positive delivery device P, in which the thread supply V has a rotatable thread winding 18.
  • the drive 6 is connected to a control device C2 of the positive delivery device P, which receives control signals from the drive motor or the control device C of the measurement delivery device M.
  • the reference number 19 indicates the transmission of a stop signal to the weaving machine (in the event of thread breakage, a fault or when the thread winding 18 is empty).
  • the positive delivery device P could be attached to the measurement delivery device M on the input side and driven by it (with adjustable speed relation).
  • the invention consists in using a thread intermediate storage and measuring delivery device M for the supply of elastomer thread material with controlled elongation in a rapier or projectile weaving machine, as is used per se for jet weaving machines in which the insertion device does not have any Length dimensioning is capable of.
  • a thread intermediate storage and measuring delivery device M for the supply of elastomer thread material with controlled elongation in a rapier or projectile weaving machine, as is used per se for jet weaving machines in which the insertion device does not have any Length dimensioning is capable of.
  • the measuring delivery device M is used here to adjust the stretch of the elastomer thread in the weaving machine. Because feeding the elastomer thread with the positive delivery device of the weaving machine alone is not possible because of the strong accelerations and decelerations in the intermittent mode of operation of a weaving machine.
  • the positive delivery device is used to feed the elastomer thread to the measuring delivery device with adjustable elongation.
  • the length measuring device serves to keep the stretch in the temporarily stored windings and, in cooperation with the length-measuring insertion device of the weaving machine, to set a certain stretch in the fabric.
  • the method according to the invention and the processing system according to the invention are particularly suitable for weaving with uncovered elastomer threads with extreme extensibility as weft threads.
  • a so-called ELAN-FEEDER, manufactured by Memminger-Iro GmbH, DE is particularly suitable as the positive delivery device P.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

L'invention décrit un procédé visant à insérer un fil (Y) extensible dans la longueur, provenant d'une réserve de fils (1), dans une machine à tisser sans navette (W). Selon ce procédé, le fil est d'abord déroulé de la réserve de fils avec une alimentation en fils positive, puis stocké temporairement en spires jointives à une vitesse d'enroulement synchronisée avec la vitesse de sortie positive, selon un allongement prédéfini. A chaque insertion, seule une longueur d'insertion de fil prédéterminée est libérée.
EP01936113A 2000-03-20 2001-03-20 Procede d'insertion d'un fil elastomere et systeme de traitement de fils Expired - Lifetime EP1266056B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10013776 2000-03-20
DE10013776A DE10013776A1 (de) 2000-03-20 2000-03-20 Verfahren zum Eintragen eines Elastomer-Fadens und Fadenverarbeitungssystem
PCT/EP2001/003193 WO2001071075A2 (fr) 2000-03-20 2001-03-20 Procede d'insertion d'un fil elastomere et systeme de traitement de fils

Publications (2)

Publication Number Publication Date
EP1266056A2 true EP1266056A2 (fr) 2002-12-18
EP1266056B1 EP1266056B1 (fr) 2004-08-11

Family

ID=7635631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01936113A Expired - Lifetime EP1266056B1 (fr) 2000-03-20 2001-03-20 Procede d'insertion d'un fil elastomere et systeme de traitement de fils

Country Status (7)

Country Link
US (1) US6752178B1 (fr)
EP (1) EP1266056B1 (fr)
KR (1) KR100492234B1 (fr)
CN (1) CN1208510C (fr)
DE (2) DE10013776A1 (fr)
TR (1) TR200402038T4 (fr)
WO (1) WO2001071075A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5615999B2 (ja) * 2007-03-02 2014-10-29 津田駒工業株式会社 流体噴射式織機における緯糸送り装置
CN104846516B (zh) * 2015-06-01 2016-04-13 苏州市晨彩纺织研发有限公司 一种螺旋移位式储纬器
JP6374369B2 (ja) * 2015-11-06 2018-08-15 株式会社豊田自動織機 織機における緯糸測定装置
CN108290699B (zh) * 2015-11-11 2019-10-11 P.T.M.T.有限责任公司 用于在织机中供应纬纱的受控系统
IT201600125999A1 (it) * 2016-12-14 2018-06-14 Lgl Electronics Spa Metodo di controllo della selezione del filato per sistemi di tessitura
KR102600848B1 (ko) * 2021-11-26 2023-11-10 신진텍스(주) 신축위사가 적용된 세폭직물의 제직장치 및 방법
CN114318695B (zh) * 2021-12-28 2023-03-24 阿利斯教育装备科技(苏州)有限公司 一种高效的全自动毛织机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858416A (en) * 1973-07-23 1975-01-07 Eugene F White Knitting machine yarn feeding apparatus
US3911698A (en) * 1974-07-01 1975-10-14 Stevens & Co Inc J P Thread feeding device for inserted weft knitting machines
DE3335875A1 (de) * 1983-10-03 1985-04-25 Protechna Herbst GmbH & Co KG, 8012 Ottobrunn Verfahren und vorrichtung zur ueberwachung der fadenspannung eines elastischen fadens
SE8701876D0 (sv) 1987-05-05 1987-05-05 Iro Ab Forfarande och system for positiv matning av ett elastiskt garn till en garnforbrukande maskin med varierande (intermittent) garnforbrukning, foretredesvis en strumpstickmaskin
IT1274555B (it) * 1995-05-23 1997-07-17 Lorenzo Massardi Dispositivo di alimentazione di un filato,particolarmente un filato elastico,per macchine per maglieria,calzetteria o simili
DE19801643A1 (de) * 1998-01-17 1999-07-22 Stoll & Co H Verfahren zur Herstellung eines Gestricks auf einer Flachstrickmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0171075A2 *

Also Published As

Publication number Publication date
KR100492234B1 (ko) 2005-05-27
EP1266056B1 (fr) 2004-08-11
DE10013776A1 (de) 2001-10-11
US6752178B1 (en) 2004-06-22
CN1208510C (zh) 2005-06-29
WO2001071075A2 (fr) 2001-09-27
CN1418269A (zh) 2003-05-14
TR200402038T4 (tr) 2004-09-21
WO2001071075A3 (fr) 2002-02-14
DE50103226D1 (de) 2004-09-16
KR20020081475A (ko) 2002-10-26

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