EP0580267A1 - Dispositif pour alimenter un dispositif de consommation de fil travaillant périodiquement - Google Patents

Dispositif pour alimenter un dispositif de consommation de fil travaillant périodiquement Download PDF

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Publication number
EP0580267A1
EP0580267A1 EP93202224A EP93202224A EP0580267A1 EP 0580267 A1 EP0580267 A1 EP 0580267A1 EP 93202224 A EP93202224 A EP 93202224A EP 93202224 A EP93202224 A EP 93202224A EP 0580267 A1 EP0580267 A1 EP 0580267A1
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EP
European Patent Office
Prior art keywords
yarn
winding element
winding
release means
drum
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
EP93202224A
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German (de)
English (en)
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EP0580267B1 (fr
Inventor
Joannes Josephus Hendricus Marie Gorris
Paul Gunneman
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.)
Te Strake BV
Original Assignee
Te Strake BV
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Publication date
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Application filed by Te Strake BV filed Critical Te Strake BV
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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

Definitions

  • the invention relates to a device for feeding a periodically operating yarn-consuming device, of the type adapted to shape - with the aid of a rotating winding element - the yarn to be consumed into a supply coil and to periodically release - with the aid of a release means - from said coil a number of windings corresponding with a predetermined yarn length to be drawn off and supplied to the yarn consuming device, the drive of the winding element comprising means adapted to bring the winding element to a quick standstill in case of a halting release means.
  • Such devices are well-known and are particularly utilized as yarn preparing device with shuttleless weaving machines.
  • the yarn preparing device In case the weaving machine in operation is consuming weft yarn of one type (or colour) the yarn preparing device will operate in a continuous mode and the weft yarn to be consumed will be continuously drawn from a stationary yarn package, whereby a substantially constant low yarn tension will occur in the yarn trajectory between the yarn package and the yarn preparing device up to the release means.
  • Such a brake however, has a harmful effect on the yarn tension during normal operation.
  • this aim is achieved in that measures have been taken in the drive control of the winding element to keep the winding element - before coming to a complete standstill - rotating through a certain angle at a substantially lower speed. In this manner, the yarn loop produced during the initial phase of the stopping procedure will be rectified during the last phase of said procedure.
  • the device according to the invention is characterized in that the drive control of the winding element is controlled by a precontrol unit, to which - in addition to the stopping signal - also a signal is supplied that is produced by a position sensor cooperating with said winding element.
  • the precontrol unit is designed to cause the winding element - upon receiving the last detection signal of the position sensor - to keep rotating up to the angular position corresponding with the detection location.
  • the winding element may be caused to come to a standstill in a position, in which the weaver has the best sight on the yarn course through the device.
  • a stationary (weft) yarn package 1 As seen from the left to the right, into the main travelling direction of the weft yarn, there are the following parts and devices respectively: a stationary (weft) yarn package 1, a winding arm 3 driven by an electric motor 2, a stationary supported drum 4 adapted to collect the yarn supplied by the winding arm 3 in the form of a plurality of windings, an electromagnetically operating stopper pin 5, a winding counter 6, a yarn guiding eyelet 7, an air pressure operated main injector 8 functioning as a weft inserting device, a cutting member 9, the weaving shed 10 and a stretching injector 11 provided with a weft detection means.
  • a stationary (weft) yarn package 1 As seen from the left to the right, into the main travelling direction of the weft yarn, there are the following parts and devices respectively: a stationary (weft) yarn package 1, a winding arm 3 driven by an electric motor 2, a stationary supported drum 4 adapted to collect the yarn supplied by the winding arm 3 in the form of a
  • a weft preparing device 2-5 of the drum type is taken as an example and comprises a rotating winding arm 3 (the so called “flyer") provided with a guiding passage for the weft yarn, and a stationary supported winding drum 4 with a periodically operating stopper pin 5.
  • weft yarn i is continuously drawn from the yarn package 1 at a speed of e.g. 30-40 m/sec and passed towards and through the guiding passage within the winding arm 3 that winds the yarn onto the drum 4 at a speed of e.g. 5000-6000 rpm.
  • a proportion of the yarn supply thus collected on the drum is periodically released for withdrawal and supply to the yarn inserting device by causing the stopper pin 5 to retract from the drum surface.
  • the windings withdrawn from the drum pass the winding counter 6.
  • the stopper pin 5 is retracted again when the weft thread has been completely inserted into the shed and has been detected, stretched and (substantially) beaten up into the kloth, so that a following weft insertion is to be started.
  • each change from one type (colour) to another type (colour) involves an interruption in the need for yarn of that particular type (colour) with the respective inserting device (injector).
  • the stopper pin 5 would normally retract it is now remaining in its stop position.
  • the drive of the winding arm 3 is rapidly switched off to prevent the drum 4 to be overloaded with weft yarn. Bringing the winding arm 3 to a standstill in an abrupt manner, i.e.
  • the drive control 13 of the winding arm 3 is driven by a precontrol unit 14.
  • the stop signal S which may e.g. be initiated by the detection signal representative of the latest weft insertion, as well as a signal produced by the position sensor indicated at 12, are supplied to this precontrol unit.
  • the position sensor may be an optical sensor and detects the turns of the winding arm which still occur during the stopping phase.
  • the precontrol unit 14 is so designed that after the latest detection signal of the sensor 12 the motor keeps rotating through a certain angle (or a number of turns) at a reduced speed (e.g. not higher than 50 rpm) to consume the yarn length of the formed loop(s) in a flexible manner, so that no peak tensions will occur when the respective yarn preparing device is put into operation again.
  • the precontrol unit 14 is designed in such a way that it causes the winding element - upon receipt of the latest detection signal of the position sensor - to keep rotating until reaching the angular position corresponding with the detection location.
  • a rotating winding drum 4' which is driven by a motor 2'.
  • the yarn i is supplied from the stationary yarn package 1 via a yarn guiding element 15 directly, tangentially to the drum 4'.
  • the release means is schematically represented as a (periodically operating) yarn brake 5', but may also be a guide arm, which rotates along with the winding drum 4' at a varying speed, as e.g. disclosed in DE-3.142.710 and 3.417.786.
  • a “position sensor” is formed by a disc 1 attached on the shaft of the rotating winding drum 4', said disc cooperating with an optical sensor (not shown), which is adapted to detect one or more marks on the disc.
  • the motor 2' is controlled by a precontrol unit (not shown) to which the stopping signal S and the detection signal from the position sensor 12' are supplied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP19930202224 1992-07-24 1993-07-26 Dispositif pour alimenter un dispositif de consommation de fil travaillant périodiquement Expired - Lifetime EP0580267B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9201344A NL9201344A (nl) 1992-07-24 1992-07-24 Inrichting voor het voeden van een periodiek werkende garen-verwerkende inrichting.
NL9201344 1992-07-24

Publications (2)

Publication Number Publication Date
EP0580267A1 true EP0580267A1 (fr) 1994-01-26
EP0580267B1 EP0580267B1 (fr) 1998-02-18

Family

ID=19861108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930202224 Expired - Lifetime EP0580267B1 (fr) 1992-07-24 1993-07-26 Dispositif pour alimenter un dispositif de consommation de fil travaillant périodiquement

Country Status (4)

Country Link
EP (1) EP0580267B1 (fr)
DE (1) DE69317019T2 (fr)
NL (1) NL9201344A (fr)
WO (1) WO1994002672A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999014149A1 (fr) * 1997-09-16 1999-03-25 Iro Patent Ag Procede pour le stockage intermediaire de fil, et appareil distributeur
WO2000068478A1 (fr) * 1999-05-07 2000-11-16 Ppg Industries Ohio, Inc. Dispositif d'accumulation destine a un metier a tisser a jet d'air
WO2001071076A2 (fr) * 2000-03-24 2001-09-27 Iropa Ag Procede pour commander un dispositif de livraison de fil d'un metier mecanique
WO2003029121A1 (fr) * 2001-09-24 2003-04-10 Iropa Ag Dispositif de livraison de fil

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7908901A (nl) * 1978-12-12 1980-06-16 Toyoda Automatic Loom Works Fluidumtoevoerinrichting bij schietspoelloos weefgetouw.
DE3142710A1 (de) * 1980-11-17 1982-06-24 Elitex, koncern textilního strojírenství, Liberec "verfahren zur steuerung von schussfaeden und rotationsabmessvorrichtung zur durchfuehrung dieses verfahrens"
DE3417786A1 (de) * 1983-06-15 1984-12-20 Elitex, koncern textilního strojírenství, Reichenberg/Liberec Verfahren und einrichtung zur steuerung eines schussfadens an einer schuetzenlosen webmaschine
FR2548693A1 (fr) * 1983-07-07 1985-01-11 Saurer Diederichs Sa Dispositif d'entrainement en rotation pour predelivreur-mesureur de trame, sur une machine a tisser sans navette
EP0261683A2 (fr) * 1986-09-26 1988-03-30 Tsudakoma Corporation Dispositif de stockage de fil de trame
EP0286584A1 (fr) * 1987-04-08 1988-10-12 GebràœDer Sulzer Aktiengesellschaft Procédé pour le fonctionnement du dispositif d'emmagasinage de fil de trame dans un métier à tisser

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7908901A (nl) * 1978-12-12 1980-06-16 Toyoda Automatic Loom Works Fluidumtoevoerinrichting bij schietspoelloos weefgetouw.
DE3142710A1 (de) * 1980-11-17 1982-06-24 Elitex, koncern textilního strojírenství, Liberec "verfahren zur steuerung von schussfaeden und rotationsabmessvorrichtung zur durchfuehrung dieses verfahrens"
DE3417786A1 (de) * 1983-06-15 1984-12-20 Elitex, koncern textilního strojírenství, Reichenberg/Liberec Verfahren und einrichtung zur steuerung eines schussfadens an einer schuetzenlosen webmaschine
FR2548693A1 (fr) * 1983-07-07 1985-01-11 Saurer Diederichs Sa Dispositif d'entrainement en rotation pour predelivreur-mesureur de trame, sur une machine a tisser sans navette
EP0261683A2 (fr) * 1986-09-26 1988-03-30 Tsudakoma Corporation Dispositif de stockage de fil de trame
EP0286584A1 (fr) * 1987-04-08 1988-10-12 GebràœDer Sulzer Aktiengesellschaft Procédé pour le fonctionnement du dispositif d'emmagasinage de fil de trame dans un métier à tisser

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999014149A1 (fr) * 1997-09-16 1999-03-25 Iro Patent Ag Procede pour le stockage intermediaire de fil, et appareil distributeur
US6279619B1 (en) 1997-09-16 2001-08-28 Iro Patent Ag Method for preliminarily storing yarn and feeding device
WO2000068478A1 (fr) * 1999-05-07 2000-11-16 Ppg Industries Ohio, Inc. Dispositif d'accumulation destine a un metier a tisser a jet d'air
WO2001071076A2 (fr) * 2000-03-24 2001-09-27 Iropa Ag Procede pour commander un dispositif de livraison de fil d'un metier mecanique
WO2001071076A3 (fr) * 2000-03-24 2002-01-03 Iropa Ag Procede pour commander un dispositif de livraison de fil d'un metier mecanique
US6941976B2 (en) 2000-03-24 2005-09-13 Iropa Ag Method for controlling a yarn feeding device of a weaving machine
WO2003029121A1 (fr) * 2001-09-24 2003-04-10 Iropa Ag Dispositif de livraison de fil
US7083134B2 (en) 2001-09-24 2006-08-01 Iropa Ag Yarn feeding device
CN100337893C (zh) * 2001-09-24 2007-09-19 艾罗帕股份有限公司 喂纱装置

Also Published As

Publication number Publication date
DE69317019T2 (de) 1998-07-16
NL9201344A (nl) 1994-02-16
EP0580267B1 (fr) 1998-02-18
WO1994002672A1 (fr) 1994-02-03
DE69317019D1 (de) 1998-03-26

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