EP1266055B1 - Procede pour commander un dispositif de livraison de fil d'un metier mecanique - Google Patents

Procede pour commander un dispositif de livraison de fil d'un metier mecanique Download PDF

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Publication number
EP1266055B1
EP1266055B1 EP01933753A EP01933753A EP1266055B1 EP 1266055 B1 EP1266055 B1 EP 1266055B1 EP 01933753 A EP01933753 A EP 01933753A EP 01933753 A EP01933753 A EP 01933753A EP 1266055 B1 EP1266055 B1 EP 1266055B1
Authority
EP
European Patent Office
Prior art keywords
drive motor
thread
consumption
phase
depending
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
EP01933753A
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German (de)
English (en)
Other versions
EP1266055A2 (fr
Inventor
Pär JOSEFSSON
Patrik Jedheimar
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
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Iropa AG
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Filing date
Publication date
Application filed by Iropa AG filed Critical Iropa AG
Publication of EP1266055A2 publication Critical patent/EP1266055A2/fr
Application granted granted Critical
Publication of EP1266055B1 publication Critical patent/EP1266055B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a method according to the preamble of patent claim 1.
  • the drive motor of the measuring thread delivery device initially strong except for the slow speed of the creeper phase decelerated, then at a slow speed over a predetermined one Rotated angle or a predetermined period of time and only at the end of the creeper phase stopped to form a loop in the thread between the supply spool and to avoid the winding element. Due to the strong delay of the Drive motor and the inertia of the thread, there is namely a thread relaxation between the supply spool and the winding element, which is used for loop formation can lead. This risk is particularly high when the drive motor is decelerated very strongly from high or maximum speed. When dependent The next time the drive motor starts, the momentary Stretching the thread, which can result in a thread break. Through the the delay phase immediately continuing crawl phase is either prevented that a loop forms or a shaped loop is pulled out.
  • the method known from EP-A-261 683 is immediately followed by one Deceleration of the drive motor of the thread delivery device to crawl speed a creeper phase that is carried out over, for example, 200 ms.
  • the creeper phase has the purpose of creating squiggles in the thread between prevent the winding element and the storage area from becoming loose of the thread in this area by a return movement of the winding element to suppress against the winding direction.
  • Both known methods are based on the task of delaying one of the drive motor to suppress occurring loop formation or even before Eliminate standstill of the winding element.
  • the creeper phase is common controlled by a software-soapy preparation of the control device, whereby It may be difficult to start the creeper phase with the engine still running to be determined precisely because the drive motor depends on the operating conditions and the thread quality have different phase-out phases can. Therefore, the creeper phase is sufficient to retighten the thread length to guarantee, set longer than necessary to be on the safe side.
  • the invention has for its object a method of the type mentioned To indicate that a correct thread control on the inlet side of a weaving machine thread delivery device easily and in a different way.
  • the creeper phase is determined with a predetermined time duration and a predetermined Speed between a demand-based standstill and a The next attempt, depending on requirements, is carried out.
  • the creeper speed can be constant or variable.
  • multicolor weaving can be used for a yarn delivery device that supplies a color
  • longer standstills are required. If during a the thread is relaxed for a longer period of time, for example by pulling back of the winding element against the winding direction, it is appropriate to Assign the creeper phase to the start rather than braking, i.e. only to be carried out immediately before the next start-up, depending on requirements that correct thread control is guaranteed when the drive motor is back starts.
  • the start-up phase of the drive motor can basically precede the previous one Creeper phase included to equal the crawl speed without stopping to accelerate from full.
  • This combined start-up phase is, for example triggered with the need-based start signal for the drive motor and routinely passed through. Then the creeper phase does not need to be controlled separately there are no breakouts to be overcome.
  • the drive motor can be accelerated more efficiently.
  • the prerequisite With this advance information from the control device of the thread delivery device, the prerequisite becomes created, the creeper phase with its temporal end even short before, set to or shortly after the point in time when the need arises next start-up takes place. This may not just be a sliding one Transition to the next successive attempt, but it is possible set the creeper phase exactly so that the thread length is just being tightened which compensates for any loop formation.
  • a thread processing system S in Fig. 1 comprises a thread supply 1, e.g. a Supply spool, for thread Y wound thereon, a thread delivery device F which holds the thread Y subtracts from the thread supply 1 and temporarily stored in windings, and a thread processing Textile machine, e.g. a weaving machine W in the form of a rapier or Projectile loom or an air or water jet loom, in the Shed 2 of thread Y as a weft intermittently in individual entry processes is entered.
  • a thread delivery device F is shown. It is on the Hand that the weaving machine W can be assigned several thread delivery devices F, operated according to a predetermined sequence or selected depending on the weaving pattern become.
  • the thread delivery device F contains an electric drive motor in a housing 3 M for a winding element 4, to which the thread Y runs approximately straight from the left, and with which the thread Y is deflected outwards and on a storage body 5 in side by side Turns is cached.
  • the storage body 5 is at this embodiment of the thread delivery device arranged stationary. From the storage body 5, the thread is withdrawn, if necessary via a central pulling eye ⁇ by a not shown insertion device of the weaving machine W.
  • the thread delivery device could have a rotationally driven storage body, and can be a Thread delivery device for a rapier or projectile weaving machine or a measurement delivery device for an air or water jet loom.
  • Control device C is provided, which is connected to sensors 6, for example which is the number of turns or the size of the intermediate supply scan on the storage body 5 and corresponding signals to the control device C transmit so that it starts the electric motor M as required, accelerates, controls a certain speed, decelerates or even brakes and stops, and stops it over demand-dependent downtimes.
  • the number of turns on the storage body 5 at maximum Speed in the winding direction running drive motor a predetermined Maximum value reached, which is detected by the front sensor in the withdrawal direction the drive motor is brought to a standstill as quickly as possible.
  • the control device can be programmed so that it is approximately the same Controls the speed of the drive motor with which it is able to Consumption by the weaving machine W continuously increases even without downtimes complete.
  • multicolor weaving with several thread delivery devices F there Depending on the weaving pattern, there are often longer standstill periods for the thread delivery device.
  • a control device C1 is indicated, which is assigned to the weaving machine W. and which provides pattern-dependent information which, expediently, can be transmitted to the control device C of the thread delivery device.
  • Such Information can indicate, for example, for the thread delivery device F concerned, that after a certain time or number of entry operations after submission an information no more consumption or again consumption in certain Extent and for a certain time or over a certain number of entries will be held.
  • the control device C can then, for abrupt, for the A precautionary control system to avoid damaging changes in condition in the thread delivery device of the drive motor M. Does the information mean that the thread delivery device will soon be taken out of consumption, then e.g. the control device then the possibly high speed of the drive motor lower the lead early to avoid an abrupt stop.
  • the control device can drive the motor Let it run up slowly to avoid a sharp jerk. Also it is possible with the given advance information the speed of the running Preparatory increase or decrease drive motor.
  • the thread Y With the drive motor M running, in particular at high running speed the thread Y is essentially straight and tensioned from the thread supply 1 into the winding element 4 pulled. If the front sensor 6 responds, the drive motor M quickly brought to a standstill, for example because of the number of thread turns reached the maximum, then the drive motor M may even be braked and stopped so that the maximum is exceeded as little as possible. Due to inertia, the thread can relax during the stopping process, for example a loop L between the thread supply 1 and the winding element 4 form. A can also form between the winding element 4 and the storage body 5 Form a loose thread section. There can be tension in an elastic thread turn the winding element 4 back after the drive motor M has come to a standstill, see above that even then the thread is relaxed.
  • a control device C is used in the standstill phase slow creeper phase controlled for the drive motor.
  • the creeper phase is characterized in that the drive motor with very low constant, varied or increasing speed over a predetermined period of time or certain angle of rotation of the winding element 4 is rotated in the winding direction, around relaxed sections in the thread Y between the stock 1 and the storage body 5 to stretch or even put under a certain tension.
  • the creeper phase according to FIG. 2 is only after the standstill of the drive motor M and the winding element 4. If necessary. will the Creep phase even the next subsequent start-up of the drive motor, depending on requirements M assigned.
  • Fig. 2 speed / time or weaving machine rotation angle diagram
  • curve 6 shown represents the running of the drive motor M at high speed, before the control device C issues a stop command at a time t1, for example because the front sensor 6 has responded.
  • time t2 comes the drive motor M or the winding element 4 due to inertia to a standstill.
  • the creeper phase represented by a curve 8 is activated, over a certain period of time (from t5 to t4) or over a certain period Rotation range of the winding element 4 extends and at a slow speed, preferably runs at an approximately constant or varied speed.
  • the control device C can start from the time t1 of the stop signal define a certain period of time (t1 - t3) until the beginning of the creeper phase, or a corresponding rotation angle range of the main shaft of the weaving machine W. This or this is chosen so that the individual delay behavior of the drive motor with the winding element of the components rotating therewith Is taken into account, and the creeper phase only after the standstill t2 Drive motor starts. It may be appropriate to end (time t4) the Creep phase close to the next start-up as required (time t5) adjust to any tension of the thread, even during the standstill phase occurred to eliminate.
  • the trigger for the creeper phase is the stop signal at t1.
  • the creeper phase could also be achieved by a clock generator with a counter or controlled by a clockwork. Should the thread delivery device with essentially constant downtimes work, then the control device could C the creeper phase (curve 8) through appropriate software preparation within each standstill period so that the requirements e.g. as shown in Fig. 2 can be met
  • the creeper phase represented by curve 8 is in the start-up phase incorporated so that a smooth transition from the creeper phase to the strong Startup acceleration occurs.
  • the start-up phase of the drive motor is on the control side M set so that with the start signal at time t5 for the drive motor automatically the creeper phase first, possibly with increasing speed, drive through and then without stopping from time t6 with sliding Transition is further accelerated. Then also static breakaway friction for the thread and a breakaway torque for the drive motor when starting avoided.
  • the strong acceleration accelerates in favor of the creeper phase somewhat delayed after time t5.
  • downtimes can vary in length depending on need, 4 (and as explained with reference to FIG. 1 for the control device C1) for example at a time t6 of the control device C, e.g. from one the weaving pattern monitoring control, given the information that soon the thread consumption ceases, and that only at a later point in time t5 or shortly after t5 thread consumption from this delivery device will take place again.
  • the control device C can the creeper phase so that they are within the standstill period and close for example if need be, t5 is started again and until then either is completely completed, or is completed directly at time t5 or with the end t4 "even overlapping with the time t5. In the latter two cases, the thread has not yet come to rest, when the drive motor starts up fully (smooth transition), so that a gentle Thread treatment can be achieved or the drive motor accelerated more efficiently.
  • the control device can be received the preliminary information at time t1, for example, time t3 (if necessary also calculate t4 ', t4 ") and carry out the creeper phase.
  • the drive motor M and the winding element 4 are initially complete brought to a standstill at t2 before the creeper phase is activated. This can be routinely based on the stop signal at t1 or the start signal at t5 be done, or individually based on the advance information.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (7)

  1. Procédé pour contrôler un dispositif de livraison de fil de métier à tisser (F), dans lequel un moteur d'entraínement (M) pour un élément d'enroulement (4) pouvant être entraíné par rotation, lequel enroule un fil (Y) enlevé d'une réserve de fil (1) dans des spires juxtaposées pour le stockage de fil, est accéléré, ralenti ou arrêté en fonction des besoins par un dispositif de commande (C) lors du stockage de fil et dans lequel le moteur d'entraínement est entraíné pour éliminer une détente de fil (L) survenue lors de l'arrêt dans le sens d'enroulement en supplément au moyen d'une phase d'avance lente, en fonction des besoins, avec une vitesse lente, pour une durée prédéfinie ou un angle de rotation prédéfini, caractérisé en ce que le moteur d'entraínement (M) est d'abord immobilisé, et exécute la phase d'avance lente (8) seulement après l'immobilisation (t2) dans l'attribution dans le temps ou spécifique à l'angle de rotation à l'arrêt (t2) ou à un démarrage (t5) consécutif en fonction des besoins.
  2. Procédé selon la revendication 1, caractérisé en ce que le moteur d'entraínement exécute la phase d'avance lente après un arrêt (t2) dépendant des besoins et avant le démarrage (t5) consécutif en fonction des besoins.
  3. Procédé selon la revendication 1, caractérisé en ce que le moteur d'entraínement n'exécute la phase d'avance lente (8) que juste avant le démarrage (t5) consécutif en fonction des besoins.
  4. Procédé selon la revendication 1, caractérisé en ce que la fin (t4, t4' , t4'') dans le temps de la phase d'avance lente est réglée sur l'instant ou juste après l'instant (t5) du démarrage consécutif en fonction des besoins.
  5. Procédé selon la revendication 1, caractérisé en ce que le moteur d'entraínement exécute le démarrage dépendant des besoins avec la phase d'avance lente précédente et passant directement à l'accélération de démarrage et amorcé avec un signal de démarrage à l'instant (t5), afin d'éviter un frottement de décollage statique entre la phase d'avance lente et le démarrage.
  6. Procédé selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que des informations dépendantes du dessin d'armure sont mises à disposition auparavant tout du moins au moyen de plusieurs opérations d'insertion sans consommation de fil ou opérations d'insertion consécutives avec consommation de fil et sont transmises au dispositif de commande (C), et en ce que le dispositif de commande exécute au moyen des informations après une immobilisation d'une phase d'avance lente (8) avant le démarrage ou jusqu'au démarrage consécutif en fonction des besoins.
  7. Procédé selon la revendication 6, caractérisé en ce que la fin (t4, t4', t4") dans le temps ou spécifique à l'angle de rotation de la phase d'avance lente est réglée juste avant, sur ou juste après l'instant (t5) ou l'angle de rotation du démarrage consécutif en fonction des besoins.
EP01933753A 2000-03-24 2001-03-26 Procede pour commander un dispositif de livraison de fil d'un metier mecanique Expired - Lifetime EP1266055B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10014623 2000-03-24
DE10014623A DE10014623A1 (de) 2000-03-24 2000-03-24 Verfahren zum Steuern eines Webmaschinen-Fadenliefergeräts
PCT/EP2001/003416 WO2001071076A2 (fr) 2000-03-24 2001-03-26 Procede pour commander un dispositif de livraison de fil d'un metier mecanique

Publications (2)

Publication Number Publication Date
EP1266055A2 EP1266055A2 (fr) 2002-12-18
EP1266055B1 true EP1266055B1 (fr) 2004-09-22

Family

ID=7636172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01933753A Expired - Lifetime EP1266055B1 (fr) 2000-03-24 2001-03-26 Procede pour commander un dispositif de livraison de fil d'un metier mecanique

Country Status (6)

Country Link
US (1) US6941976B2 (fr)
EP (1) EP1266055B1 (fr)
KR (1) KR20020081491A (fr)
DE (2) DE10014623A1 (fr)
TR (1) TR200402655T4 (fr)
WO (1) WO2001071076A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502005008310D1 (de) * 2004-11-22 2009-11-26 Itema Switzerland Ltd Verfahren zum Abbremsen eines Schussfadens einer Webmaschine
DE502005007653D1 (de) * 2004-11-22 2009-08-20 Sultex Ag Verfahren zum Abbremsen eines Schussfadens einer Düsenwebmaschine
DE102005023929B3 (de) * 2005-05-24 2006-09-14 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Verfahren zum Betreiben einer Projektilwebmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0410233Y2 (fr) * 1986-09-26 1992-03-13
DE9117045U1 (de) * 1991-06-18 1995-05-11 Iro Ab, Ulricehamn Fadenspeicher- und -liefervorrichtung
DE4127796A1 (de) * 1991-08-22 1993-02-25 Iro Ab Faden-fournisseur
NL9201344A (nl) * 1992-07-24 1994-02-16 Rueti Inrichting voor het voeden van een periodiek werkende garen-verwerkende inrichting.
DE4240709A1 (de) * 1992-12-03 1994-06-09 Iro Ab Schußfaden-Meßfournisseur
SE502175C2 (sv) * 1993-12-17 1995-09-04 Iro Ab Förfarande och anordning för fastställande av trådmagasinets variation på en fournissör
SE511091C2 (sv) * 1993-04-21 1999-08-02 Sipra Patent Beteiligung Garnmatare för textilmaskiner
IT1267157B1 (it) * 1994-11-22 1997-01-28 Lgl Electronics Spa Dispositivo e metodo perfezionati per la sorveglianza della riserva di filato negli apparecchi alimentatori di trama.
SE9703369D0 (sv) 1997-09-16 1997-09-16 Iro Ab Verfahren zum zwischenspeichern von faden und liefergerät
EP1087045B1 (fr) * 1999-09-27 2004-02-25 Sultex AG Procédé pour faire fonctionner le fournisseur d'un métier à tisser

Also Published As

Publication number Publication date
DE50103761D1 (de) 2004-10-28
DE10014623A1 (de) 2001-09-27
KR20020081491A (ko) 2002-10-26
WO2001071076A3 (fr) 2002-01-03
US20030140979A1 (en) 2003-07-31
EP1266055A2 (fr) 2002-12-18
WO2001071076A9 (fr) 2002-07-18
US6941976B2 (en) 2005-09-13
TR200402655T4 (tr) 2004-11-22
WO2001071076A2 (fr) 2001-09-27

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