EP0253760A2 - 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
EP0253760A2
EP0253760A2 EP87810307A EP87810307A EP0253760A2 EP 0253760 A2 EP0253760 A2 EP 0253760A2 EP 87810307 A EP87810307 A EP 87810307A EP 87810307 A EP87810307 A EP 87810307A EP 0253760 A2 EP0253760 A2 EP 0253760A2
Authority
EP
European Patent Office
Prior art keywords
drum
weft
thread
weft thread
holding
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
EP87810307A
Other languages
German (de)
English (en)
Other versions
EP0253760B1 (fr
EP0253760A3 (en
Inventor
Robert Bucher
Paul Lincke
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.)
Sulzer AG
Original Assignee
Sulzer AG
Gebrueder Sulzer 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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0253760A2 publication Critical patent/EP0253760A2/fr
Publication of EP0253760A3 publication Critical patent/EP0253760A3/de
Application granted granted Critical
Publication of EP0253760B1 publication Critical patent/EP0253760B1/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
    • 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 weft store for a weaving machine 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 spool outside the store, and with a device for holding the weft at the outlet end of the Drum at the end of the weft insertion in the weaving machine.
  • Such a weft thread store controls the end of the weft insertion by moving a thread stopper in the path of the weft thread which is running off, whereby the weft thread run from the store comes to a standstill after a certain number of thread windings has been withdrawn from the store .
  • the winder drive is controlled so that a certain number of thread windings are provided on the drum circumference for each weft insertion.
  • the weft thread storage device can measure the weft thread precisely, but the thread length for the entry into the weaving machine can only be varied in steps corresponding to a circumferential length of the drum.
  • the drum diameter of the accumulator must be adjusted for different weaving widths.
  • a holding member of the device can be adjusted in the circumferential direction of the drum during operation by means of a controllable drive, with which the length of the thread running off the drum can be measured precisely.
  • the drive is connected to a control which, on the other hand, is coupled to a counting device for the number of weft threads drawn off from the store.
  • the control unit can also be connected to an entry sensor for the thread, with which the position of the weft thread in the weaving machine can be scanned after the weft insertion, with adjustment signals for the drive being able to be generated by means of the control unit due to the position of the weft thread tip.
  • a holding organ with Advantage uses a magnet radially actuated finger, which is housed in a ring on the take-off side of the weft thread around the drum.
  • the drive can be coupled to the ring and the holding member via a gearwheel.
  • the device With a double arrangement of control ring, retaining element and drive, the device can be operated at half speed.
  • the retaining member can also sit in a rotor which is rotatably and drivably mounted in a ring around the drum.
  • the holding member can be actuated by means of an electromagnet, a current source and a controller in the rotor, the supply of the current source and the transmission of information to the controller being made possible by windings in an electromagnetic drive in the ring and a secondary winding in the rotor.
  • the device on the drum circumference is rotated from a holding position into a second position, which also makes it possible to pull off non-integer numbers of turns.
  • the holding member can make a number of revolutions around the drum circumference in the direction of rotation of the thread when it runs off the drum.
  • the holding element is accelerated to a speed close to the running speed of the thread and at the same time brought ready to catch with respect to the weft thread, so that the weft thread running out of the drum runs gently onto the holding element and this is continuously braked together with the running weft thread.
  • 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 control system l5 Before starting up the weft thread store 1 with the weaving machine 3, the control system l5 must be programmed with regard to the required weft thread length.
  • the winding arms l2 and l4 are operated intermittently by the drive l2l in such a way that the largest part of the required thread length is pre-stored as weft thread supply 2l ein 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 l60, l60 ⁇ 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.

Landscapes

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

Publications (3)

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

Family

ID=4242449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87810307A Expired - Lifetime EP0253760B1 (fr) 1986-07-15 1987-05-22 Méthode de fonctionnement d'un dispositif de stockage de fil de trame pour un métier à tisser

Country Status (4)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327973A1 (fr) * 1988-02-11 1989-08-16 ROJ ELECTROTEX S.p.A. Dispositif d'alimentation en fil
WO1993025742A1 (fr) * 1992-06-12 1993-12-23 Iro Ab Procede et dispositif d'alimentation en fils de trame
EP0581745A1 (fr) * 1992-07-27 1994-02-02 L.G.L. ELECTRONICS S.p.A. Perfectionnement des fournisseurs de trame pour métiers à tisser pneumatiques
EP0699790A1 (fr) * 1994-07-19 1996-03-06 L.G.L. ELECTRONICS S.p.A. Organe de retenue de fil pour fournisseur de trame de métier à jet d'air

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0891286B1 (fr) * 1996-03-26 2000-05-31 Iro Ab Fournisseur de fil muni d'un detecteur de proximite magnetique
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0011308A1 (fr) * 1978-11-20 1980-05-28 Union Carbide Corporation Préparation de copolymères d'éthylène de faible densité dans un réacteur à lit fluidisé
DE3123760A1 (de) * 1980-06-17 1982-02-25 Maschinenfabrik Rüti AG, 8630 Rüti, Zürich Fadenliefervorrichtung fuer textilmaschinen und verfahren zum betrieb der fadenliefervorrichtung
EP0107110A1 (fr) * 1982-09-30 1984-05-02 Aktiebolaget Iro Accumulateur de fil avec dispositif de mesure
EP0111308A2 (fr) * 1982-12-13 1984-06-20 Nissan Motor Co., Ltd. Détecteur pour contrôler l'alimentation du fil de trame
EP0145163A1 (fr) * 1983-10-15 1985-06-19 Sulzer Brothers Limited Dispositif de mesure de la longueur de fils
JPH0628552A (ja) * 1992-07-09 1994-02-04 Omron Corp コインタイマ

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
DE19934767A1 (de) * 1999-07-23 2001-01-25 Philips Corp Intellectual Pty Magnetisches Bauelement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0011308A1 (fr) * 1978-11-20 1980-05-28 Union Carbide Corporation Préparation de copolymères d'éthylène de faible densité dans un réacteur à lit fluidisé
DE3123760A1 (de) * 1980-06-17 1982-02-25 Maschinenfabrik Rüti AG, 8630 Rüti, Zürich Fadenliefervorrichtung fuer textilmaschinen und verfahren zum betrieb der fadenliefervorrichtung
EP0107110A1 (fr) * 1982-09-30 1984-05-02 Aktiebolaget Iro Accumulateur de fil avec dispositif de mesure
EP0111308A2 (fr) * 1982-12-13 1984-06-20 Nissan Motor Co., Ltd. Détecteur pour contrôler l'alimentation du fil de trame
EP0145163A1 (fr) * 1983-10-15 1985-06-19 Sulzer Brothers Limited Dispositif de mesure de la longueur de fils
JPH0628552A (ja) * 1992-07-09 1994-02-04 Omron Corp コインタイマ

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327973A1 (fr) * 1988-02-11 1989-08-16 ROJ ELECTROTEX S.p.A. Dispositif d'alimentation en fil
US4936356A (en) * 1988-02-11 1990-06-26 Roj Electrotex S.P.A. Adjustment of motor speed in yarn feeders according to yarn reserve
WO1993025742A1 (fr) * 1992-06-12 1993-12-23 Iro Ab Procede et dispositif d'alimentation en fils de trame
US5509450A (en) * 1992-06-12 1996-04-23 Iro Ab Weft yarn feeding device having a rotating retainer
EP0581745A1 (fr) * 1992-07-27 1994-02-02 L.G.L. ELECTRONICS S.p.A. Perfectionnement des fournisseurs de trame pour métiers à tisser pneumatiques
EP0699790A1 (fr) * 1994-07-19 1996-03-06 L.G.L. ELECTRONICS S.p.A. Organe de retenue de fil pour fournisseur de trame de métier à jet d'air
US5590693A (en) * 1994-07-19 1997-01-07 L.G.L. Electronics S.P.A. Rotatable thread arrester for weft feeders for air-jet looms

Also Published As

Publication number Publication date
DE3774785D1 (de) 1992-01-09
JPS6328946A (ja) 1988-02-06
US4811762A (en) 1989-03-14
EP0253760B1 (fr) 1991-11-27
EP0253760A3 (en) 1989-01-25

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