EP0253760B1 - Méthode de fonctionnement d'un dispositif de stockage de fil de trame pour un métier à tisser - Google Patents

Méthode de fonctionnement d'un dispositif de stockage de fil de trame pour un métier à tisser Download PDF

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Publication number
EP0253760B1
EP0253760B1 EP87810307A EP87810307A EP0253760B1 EP 0253760 B1 EP0253760 B1 EP 0253760B1 EP 87810307 A EP87810307 A EP 87810307A EP 87810307 A EP87810307 A EP 87810307A EP 0253760 B1 EP0253760 B1 EP 0253760B1
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EP
European Patent Office
Prior art keywords
drum
weft
weft yarn
retaining element
control
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
EP87810307A
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German (de)
English (en)
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EP0253760A3 (en
EP0253760A2 (fr
Inventor
Robert Bucher
Paul Lincke
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Sulzer AG
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Gebrueder Sulzer AG
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Publication of EP0253760A2 publication Critical patent/EP0253760A2/fr
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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
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/367—Monitoring yarn quantity on the drum
    • 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
    • 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
    • D03D47/363—Construction or control of the yarn retaining devices

Definitions

  • the invention relates to a method for the operation of the weft store of a loom, with a drum for receiving a supply of weft and with at least one winder, by means of which the weft can be wound onto the drum from a yarn spool outside the store, and with a control device for holding the Weft thread at the outlet end of the drum upon completion of the weft insertion into the weaving machine, a holding member of the device being adjustable in the circumferential direction of the drum during operation by means of a controllable drive.
  • Such a weft thread store is described in Japanese Patent 60/28 552, application number 58/13 4498. Due to the adjustability of the holding member on the circumference of the drum, an exact dimension of the weft thread length for entry into the weaving machine is possible, but the weft thread is held abruptly by the stationary holding member when the thread supply wound on the storage drum is exhausted.
  • This object is achieved in that the holding member is adjusted during the adjustment process between two holding positions on the drum circumference in the direction of rotation in which the thread runs, the holding member being at a speed close to that The running speed of the thread is accelerated during the adjustment and at the same time is brought ready to catch with respect to the weft thread, so that the weft thread running out of the drum gently runs onto the holding element, and that the holding element with the running weft thread is then braked steadily.
  • the holding member can perform a certain number of revolutions on the drum circumference between two holding positions.
  • the holding member can be adjusted during the delivery of a precisely specified weft thread length by a certain angle of rotation on the circumference of the drum in such a way that not a whole number of thread turns are pulled off the drum between two holding positions of the device.
  • the control device for holding the weft thread has a radially actuated finger, which is accommodated in a ring on the take-off side of the weft thread on the drum and, when it is ready to catch, prevents the weft thread from being drawn off the drum freely.
  • a controllable drive for actuating the holding member can, for example, turn a ring on a gear on which the finger is mounted.
  • the ring, the holding member and the associated drive can be designed twice, whereby the operating speed of the control device is halved.
  • the retaining member can be rotatable together with the ring, or it is seated in a rotor which is rotatably and drivably mounted in the ring.
  • the retaining element can be actuated by means of an electromagnet, a current source and a control, the supply of the current source and the transmission of information to the control in the rotor being made possible by windings in an electromagnetic drive of the ring and by a secondary winding in the rotor.
  • a counter for the number of weft threads drawn off from the memory can be connected to the control of the drive.
  • the control can also be connected to an entry sensor for the weft with which the The position of the weft thread tip can be scanned in the weaving machine after the weft insertion, so that, depending on the position of the weft thread tip, adjustment signals can be generated for the drive in the control.
  • the device allows waste-free and gentle feeding of the weft thread to the weaving machine.
  • the weft store l in FIG. 1 carries a drum l3 on a shaft l0 by means of the bearings l3l and l32.
  • the weft thread 2 is fed through a part of the shaft l0 to a winding arm l2 which extends from the shaft l0 to the circumference of the drum.
  • the weft thread is deposited as a supply 2l on the left part of the drum and then wrapped by a second winding arm 14 on the right part of the drum l3.
  • the weft thread supply 2l ⁇ formed by the winding arm l4 is shown in broken lines.
  • the shaft l0 is rotated via the drive belt l22 by a motor l2l, which is controlled by the control l5 connected is.
  • the device l6 for thread control consists of a drive l63, which can adjust a ring l6l concentric with the drum l3 on the circumference of the drum, as well as a control element or holding element l62 in the ring l6l, so that the weft thread 2 running off the drum in different positions , e.g. l62a, l62b, l62c.
  • a thread sensor l26 is used to count the thread turns drawn from the store through the entry nozzle 36.
  • the weft thread is inserted through the shed 37 of the weaving machine 3 to the entry sensor 4 on the catch side 30 of the weaving machine.
  • the entry sensor 4 can consist of three sensors 41, 42, 43, which are connected to the controller 15 via the control lines 44, 45, 46.
  • the weft thread 2 is struck on the edge of the fabric 38 after the entry.
  • a main shaft 3l with an angle coding disk 32 is supported in the frame 35 of the weaving machine.
  • the reader 33 on the angle coding disk 32 transmits signals via line 34 about the operating state of the weaving machine during a machine cycle to the controller 15 of the weft thread store 1.
  • the operation of the memory is set out below.
  • the control l5 with regard to the required weft thread length must be programmed.
  • the winding arms l2 or l4 are operated intermittently by the drive l2l in such a way that most of the required thread length is stored as a weft thread supply 2l ⁇ and only a small part of the weft length during the weft insertion by the winding arm l4 from Weft thread supply 2l must be handled.
  • the weft insertion into the weaving machine 3 is released from the weft store l by pulling the control member l62 outwards into the ring l6l by means of the electromagnet l67, fed by lines l65 and l66, whereupon the weft thread supply 2l ⁇ is withdrawn from the drum circumference by the entry nozzle 36 can.
  • the electromagnet l67 overcomes the pressure force of the spring l64, which the retaining element l62 strives to keep in the extended position.
  • the thread sensor l26 counts the number of thread turns drawn off during the weft insertion. If the required weft thread length is not an integral multiple of the drum circumference, i.e.
  • the control element l62 and thus also the ring l6l must be brought into a new position on the circumference of the drum l3 before it leaves the ring l6l .
  • the diameter of the drum l3 is 100 mm, from which a theoretical length of a thread turn on the drum circumference of approximately 314 mm can be calculated.
  • a computer in the control l5 determines the number of weft threads to be drawn for a weft insertion. For the selected example, there are ten full thread turns, which correspond to a total length of approx. 3140 mm.
  • the missing l60 mm up to the required weft thread length corresponds to about half a thread turn, more precisely an arc length on the drum circumference with an angle of l83.4 °.
  • the control l5 must be able to determine the position of the control element l62 relative to the thread sensor l26, so that the control element is extended to the catch position at the right time. If the control element passes the thread sensor l26 during its adjustment path, the selected calculation example ll results in thread runs on the thread sensor l26 during a weft insertion. The retraction of the control member l62 in the ring l6l for the release of the weft thread 2 takes place at a fixed angle of rotation of the angle coding disk 32, while the extension of the control member l62 to determine the weft insertion is determined depending on the number of passes of the weft thread 2 at the thread sensor l26.
  • the control element l62 can be extended into the catch position as soon as the weft thread has passed it for the last time before the catch. The time is determined by the control l5.
  • the control element l62 can be advanced or retracted from an original position diametrically with respect to the thread sensor l26 by a maximum of 180 °. On the other hand, it could also be pivoted from any position from the drum into its new position by the smallest possible angle in the direction of the weft thread or against the direction of the weft thread. It is expedient to use a microprocessor in the control l5 for the functional sequences in the thread control and to use a controlled electric motor for the drive l63 of the ring l62.
  • the thread tip 22 of the weft thread 2 can be monitored in the catch mechanism 30 by the sensors 4l to 43 in their end position. If the position of the weft thread tip 22 lies outside the tolerance range after any weft insertion, the control l5 can determine a correction value for the position of the control member l62 relative to the drum l3 for one of the next shots, whereupon the position correction together with the arithmetical adjustment path through the Drive l63 is executed.
  • FIG. 2 shows another embodiment of the weft thread store according to the invention.
  • a single winding arm l2 is provided on the shaft l0, which creates a weft supply on the drum l3, the stock formation being controlled by the sensor l23, the control line l24 and the drive l2l of the shaft l0.
  • the ring l61, l61 ⁇ is available twice here. Both control units l62, l62 ⁇ can alternate in their activity here, so that from shot to shot, which is pulled from the thread store l, twice the time for adjusting the control unit l62 or l62 ⁇ is available in comparison to the embodiment according to FIG .
  • a rotor 170 in a stationary ring 160 can also be used.
  • the drive for the holding member l63 can be designed with particularly low mass.
  • Windings l60a are accommodated in ring l60, in which electromagnetic fields can be generated by means of control l5 and control lines l50a, which rotate counterclockwise according to FIG. 4, arrow at l67.
  • An insert made of magnetic material is accommodated in the rotor l70, on which the electromagnetic fields Apply acceleration and deceleration forces or load capacities. While the transmission of the electrical energy from the magnetic current lines l65 and l66 according to FIG.
  • a contactless inductive current supply from the windings l60a to the winding l72 in the rotor l70 is provided.
  • the electrical current flows via the rectifier l69 to the current source l68, from which the electromagnet l67 is supplied with current via the magnetic current line l65 and the magnetic switch l5b according to FIG. 5.
  • the switch l5b is controlled by a controller l5a in the rotor l70.
  • the transmission of information from the control system l5 to the control system l5a for determining the point in time at which the electromagnet l67 is switched on and off is likewise contactless via the windings l60a in the ring l60 and the winding l72 in the rotor l70.
  • the holding element l62 When processing sensitive weft yarns, it is expedient to move the holding element l62 with its carrier, the ring l6l or the rotor l70, towards the end of the weft insertion during the catching process with the weft thread, so that it is braked gently.
  • the holding element l62 is to be adjusted clockwise by the angle ⁇ between two holding positions.
  • the drawn position of the holding element l62 is that at the end of the adjustment process.
  • the holding element l62 does not move from the old position to the new position directly according to the arrow at ⁇ , but instead counterclockwise according to the direction of rotation of the angle W and in the direction of the thread running off the drum.
  • the thread supply 2l ⁇ is on the right part of the drum l3 1, so that only thread is unwound from the winding 2l by means of the winding arm 14 and is fed to the nozzle 36.
  • the thread still runs off the drum circumference at a constant take-off speed V F.
  • 6b-6e qualitatively shows the path S of the holding element l62 on the drum circumference relative to the path S F of the thread in the movement phase of the holding element.

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

Claims (10)

  1. Procédé d'actionnement du réservoir du fil de trame d'une machine à tisser qui comprend un tambour (13) de support d'une réserve (21) de fil de trame et au moins un enrouleur (12) au moyen duquel du fil de trame provenant d'une bobine de filé située à l'extérieur du réservoir peut être enroulé sur le tambour, ledit réservoir étant équipé d'un dispositif de commande (16, 161, 170) destiné à la retenue du fil de trame (2) sur l'extrémité côté déroulement du tambour à la fin de l'insertion d'une trame dans la machine à tisser, un organe de retenue (162) du dispositif de commande (16) étant déplaçable en service dans la direction de la circonférence du tambour (13) au moyen d'un entraînement commandé (163), caractérisé en ce que l'organe de retenue (161, 162, 170) est déplacé pendant le processus correspondant entre deux positions de retenue situées à la circonférence du tambour dans le sens de rotation dans lequel le fil se déroule, l'organe de retenue (161, 162, 170) étant accéléré pendant le déplacement à une vitesse (VS) se rapprochant de la vitesse (VF) de déroulement du fil et étant mis simultanément en état de préparation pour procéder à l'interception du fil de trame, de sorte que le fil de trame se déroulant du tambour effectue une approche en douceur de l'organe de retenue (161, 162, 170) et en ce que l'organe de retenue est ensuite progressivement freiné avec le fil de trame en déroulement.
  2. Procédé selon la revendication 1, caractérisé en ce que l'organe de retenue (161, 162, 170) exécute plusieurs révolutions à la circonférence du tambour entre deux positions de retenue.
  3. Procédé selon la revendication 2, caractérisé en ce que, pendant qu'une longueur L de fil de trame est délivrée à la machine à tisser, l'organe de retenue (161, 162, 170) est déplacé suivant un angle de rotation effectif α(°) à la circonférence du tambour de manière que, entre deux positions de retenue du dispositif (16), (n - m) spires ayant une longueur totale L = (n - m).π.D sont prélevées sur le tambour dont le diamètre est D, relation dans laquelle
    m =   nombre des spires entières de fil de trame qui sont prélevées pendant l'intervalle de temps séparant deux positions de retenue,
    n =   
    Figure imgb0003
     α étant l'angle de rotation (°) de l'organe de retenue à la circonférence du tambour dans le sens dans lequel le fil se déroule de la circonférence du tambour.
  4. Réservoir pour la mise en oeuvre du procédé d'actionnement du réservoir de fil de trame d'une machine à tisser selon la revendication 1, comprenant un tambour (13) de support d'une réserve (21) de fil de trame et au moins un enrouleur (12) au moyen duquel du fil de trame provenant d'une bobine de filé située à l'extérieur du réservoir peut être enroulé sur le tambour, ledit réservoir étant équipé également d'un dispositif de commande (16, 161, 170) destiné à retenir le fil de trame (2) à l'extrémité côté déroulement du tambour à la fin d'une insertion de la trame dans la machine à tisser, un organe de retenue (162) du dispositif (16) étant déplaçable en service dans la direction de la circonférence du tambour (13) au moyen d'un entraînement commandé (163) indépendamment d'un dispositif (126) de comptage du nombre des spires déroulées du fil de trame, qui est monté de son côté en position fixe, et l'organe de retenue (162) que comprend le dispositif de commande (16) étant un doigt dont l'actionnement est radial et qui est logé dans un anneau (160, 161) situé sur le côté du tambour (13) sur lequel le fil de trame se déroule.
  5. Réservoir selon la revendication 4, caractérisé en ce que l'entraînement (163) est accouplé par un pignon (164) à l'anneau (161) et à l'organe de retenue (162).
  6. Réservoir selon la revendication 4, caractérisé en ce que l'anneau de commande (161), l'organe de retenue (162) et l'entraînement correspondant (163, 164) sont réalisés en double.
  7. Réservoir selon la revendication 4, caractérisé en ce que l'organe de retenue (162) est placé dans un rotor (170) qui est monté rotatif et commandé dans un anneau (160).
  8. Réservoir selon la revendication 7, caractérisé en ce que l'organe de retenue (162) s'actionne au moyen d'un électro-aimant (167), d'une source de courant (168) et d'une commande (15a), l'alimentation de la source de courant (168) et la transmission de l'information à la commande (15a) étant assurées par des bobinages (160a) placés dans un entraînement électromagnétique (163a) situé dans l'anneau (160) et par un bobinage secondaire (172) placé dans le rotor.
  9. Réservoir selon la revendication 4, caractérisé en ce que l'entraînement (163) est connecté à une commande (15) qui est couplée par ailleurs avec un dispositif (126) de comptage du nombre des spires de fil de trame prélevées sur le réservoir.
  10. Réservoir selon la revendication 9, caractérisé en ce que la commande (15) est connectée à un détecteur (4) de l'insertion du fil (2) à l'aide duquel la position de la pointe (22) du fil de trame dans la machine à tisser (3) peut être décelée à la fin de l'insertion de la trame et en ce que des signaux de déplacement destinés à l'entraînement (163) se trouvant dans la commande (15) peuvent être créés en fonction de la position de la pointe du fil de trame.
EP87810307A 1986-07-15 1987-05-22 Méthode de fonctionnement d'un dispositif de stockage de fil de trame pour un métier à tisser Expired - Lifetime EP0253760B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2825/86 1986-07-15
CH282586 1986-07-15

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EP0253760A2 EP0253760A2 (fr) 1988-01-20
EP0253760A3 EP0253760A3 (en) 1989-01-25
EP0253760B1 true EP0253760B1 (fr) 1991-11-27

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US (1) US4811762A (fr)
EP (1) EP0253760B1 (fr)
JP (1) JPS6328946A (fr)
DE (1) DE3774785D1 (fr)

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
IT1217339B (it) * 1988-02-11 1990-03-22 Roy Electrotex Spa Alimentatore di filo per macchine tessili
DE4219306A1 (de) * 1992-06-12 1993-12-16 Iro Ab Verfahren und Vorrichtung zum Liefern von Schußfäden
IT1256898B (it) * 1992-07-27 1995-12-27 Lgl Electronics Spa Perfezionamento agli alimentatori di trama per telai ad aria.
EP0699790B1 (fr) * 1994-07-19 2000-01-19 L.G.L. ELECTRONICS S.p.A. Organe de retenue de fil pour fournisseur de trame de métier à jet d'air
IT1271787B (it) * 1994-12-22 1997-06-09 Roj Electrotex Nuova Srl Unita' elettromagnetica di arresto del filo di trama per porgitrama misuratori
DE19609095A1 (de) * 1996-03-08 1997-09-11 Iro Ab Fadenliefergerät
US6062501A (en) * 1996-03-26 2000-05-16 Iro Ab Yarn feeder having a proximity sensor
CN108486742B (zh) * 2018-04-04 2021-11-05 浙江三禾智能科技有限公司 导纱拘束叉、储纬器和织造方法
CN108315861B (zh) * 2018-04-04 2024-04-26 浙江三禾智能科技有限公司 导纱拘束叉及储纬器
CN108315863B (zh) * 2018-05-07 2024-02-20 吴江市佳鼎电子有限公司 储纬器

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Publication number Priority date Publication date Assignee Title
EP0111308A2 (fr) * 1982-12-13 1984-06-20 Nissan Motor Co., Ltd. Détecteur pour contrôler l'alimentation du fil de trame
JPH0628552A (ja) * 1992-07-09 1994-02-04 Omron Corp コインタイマ

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CA1144300A (fr) * 1978-11-20 1983-04-05 Allen Noshay Preparation de copolymeres d'ethylene de faible densite dans un reacteur a lit fluidise
CH647999A5 (de) * 1980-06-17 1985-02-28 Rueti Ag Maschf Fadenliefervorrichtung fuer textilmaschinen und verfahren zum betrieb der fadenliefervorrichtung.
JPS5891849A (ja) * 1981-11-25 1983-05-31 株式会社豊田中央研究所 ジエツトル−ム用緯糸貯留装置
US4627474A (en) * 1982-09-03 1986-12-09 Aktiebolaget Iro Yarn storing, feeding and measuring device
SE8207096D0 (sv) * 1982-12-10 1982-12-10 Iro Ab System for temporer upplagring och matning av uppmetta garnlengder foretredesvis till dysvevmaskiner
EP0107110B1 (fr) * 1982-09-30 1987-04-22 Aktiebolaget Iro Accumulateur de fil avec dispositif de mesure
JPS6028552A (ja) * 1983-07-25 1985-02-13 日産自動車株式会社 緯糸測長装置の測長量調整装置
GB8327676D0 (en) * 1983-10-15 1983-11-16 Bonas Machine Co Yarn metering device
DE19934767A1 (de) * 1999-07-23 2001-01-25 Philips Corp Intellectual Pty Magnetisches Bauelement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111308A2 (fr) * 1982-12-13 1984-06-20 Nissan Motor Co., Ltd. Détecteur pour contrôler l'alimentation du fil de trame
JPH0628552A (ja) * 1992-07-09 1994-02-04 Omron Corp コインタイマ

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EP0253760A3 (en) 1989-01-25
JPS6328946A (ja) 1988-02-06
DE3774785D1 (de) 1992-01-09
EP0253760A2 (fr) 1988-01-20
US4811762A (en) 1989-03-14

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