EP0580267B1 - Vorrichtung zum Speisen eines periodisch arbeitenden Fadenverbrauchers - Google Patents

Vorrichtung zum Speisen eines periodisch arbeitenden Fadenverbrauchers Download PDF

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Publication number
EP0580267B1
EP0580267B1 EP19930202224 EP93202224A EP0580267B1 EP 0580267 B1 EP0580267 B1 EP 0580267B1 EP 19930202224 EP19930202224 EP 19930202224 EP 93202224 A EP93202224 A EP 93202224A EP 0580267 B1 EP0580267 B1 EP 0580267B1
Authority
EP
European Patent Office
Prior art keywords
yarn
winding element
winding
stationary
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.)
Expired - Lifetime
Application number
EP19930202224
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English (en)
French (fr)
Other versions
EP0580267A1 (de
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
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
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Application filed by Te Strake BV filed Critical Te Strake BV
Publication of EP0580267A1 publication Critical patent/EP0580267A1/de
Application granted granted Critical
Publication of EP0580267B1 publication Critical patent/EP0580267B1/de
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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 as defined in the first part of claim 1.
  • Such a device is disclosed in FR-A-2 548 693 and is adapted to be used as a yarn preparing device with shuttleless weaving machines.
  • 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.
  • a practical embodiment of the device according to the invention is characterized by the features defined in claim 2.
  • 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.

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

Claims (4)

  1. Vorrichtung zum Speisen einer periodisch arbeitenden Garnverarbeitenden Maschine mit Garn von einer stationären Garnspule, versehen mit einem von einem Motor angetriebenen Wickelelement, welches das zu verarbeitende Garn zu einer Vorratspirale formen kann, wobei Mittel zur Halterung der Vorratspirale und zum periodischen Freigeben einer der der Garnverarbeitenden Maschine zuzuführenden Garnlänge entsprechenden Anzahl Windungen dieser Vorratspirale vorgesehen sind, wobei der Antriebsmotor des Wickelelements Steuermittel aufweist, welche das Wickelelement im Falle einer fortführenden Halterung der Vorratspirale schnell zum Stillstand bringen können, dadurch gekennzeichnet, dass die Steuermittel in der Weise ausgebildet sind, dass sie das Wickelelement - ehe das letztere vollständig zum Stillstand gelangt - um einen bestimmten Winkel weiterdrehen lassen, damit Schlaufenbildung im Garnlauf zwischen der stationären Garnspule und dem Wickelelement verhindert wird.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Steuermittel von einer Vorsteuereinheit gesteuert werden, der - zusätzlich zum Stoppsignal - ein von einem mit dem Wickelelement zusammenarbeitenden Positionstaster erzeugtes Signal zugeführt wird, damit das Wickelement nach dem Empfang des letzten Signals vom Positionstaster noch bis in die dem Abtastpunkt entsprechende Winkellage weiterdreht.
  3. Vorrichtung nach Ansprüchen 1-2, dadurch gekennzeichnet, dass das Wickelelement aus einem mit einer stationär gelagerten Wickeltrommel zusammenarbeitenden Wickelarm besteht und dass das Freigabeorgan von einem am Abzugende mit der stationären Trommel zusammenarbeitenden Stoppstift besteht.
  4. Vorrichtung nach Ansprüchen 1-2, dadurch gekennzeichnet, dass das Wickelorgan durch eine mit einem in seiner Abzugbahn vorgesehenen Freigabeorgan zusammenarbeitende drehbare Wickeltrommel gebildet wird.
EP19930202224 1992-07-24 1993-07-26 Vorrichtung zum Speisen eines periodisch arbeitenden Fadenverbrauchers Expired - Lifetime EP0580267B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=19861108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930202224 Expired - Lifetime EP0580267B1 (de) 1992-07-24 1993-07-26 Vorrichtung zum Speisen eines periodisch arbeitenden Fadenverbrauchers

Country Status (4)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9703369D0 (sv) * 1997-09-16 1997-09-16 Iro Ab Verfahren zum zwischenspeichern von faden und liefergerät
WO2000068478A1 (en) * 1999-05-07 2000-11-16 Ppg Industries Ohio, Inc. Air jet loom accumulator
DE10014623A1 (de) * 2000-03-24 2001-09-27 Iro Patent Ag Baar Verfahren zum Steuern eines Webmaschinen-Fadenliefergeräts
SE0103196D0 (sv) * 2001-09-24 2001-09-24 Iropa Ag Fadenliefergerät

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4351369A (en) * 1978-12-12 1982-09-28 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fluid supply apparatus in shuttleless loom
CS223214B1 (en) * 1980-11-17 1983-09-15 Vladimir Svaty Method of the control of the weft thread by dosing on the shuttleless weaving machins and rotation doser for executing the same method
CS247380B1 (en) * 1983-06-15 1986-12-18 Vladimir Svaty Method and device for weft thread control on non-orthodox weaving machine
FR2548693B1 (fr) * 1983-07-07 1985-10-18 Saurer Diederichs Sa Dispositif d'entrainement en rotation pour predelivreur-mesureur de trame, sur une machine a tisser sans navette
JPH0410233Y2 (de) * 1986-09-26 1992-03-13
DE3862670D1 (de) * 1987-04-08 1991-06-13 Sulzer Ag Verfahren fuer den betrieb eines schussfadenspeichers fuer eine webmaschine.

Also Published As

Publication number Publication date
WO1994002672A1 (en) 1994-02-03
DE69317019T2 (de) 1998-07-16
NL9201344A (nl) 1994-02-16
EP0580267A1 (de) 1994-01-26
DE69317019D1 (de) 1998-03-26

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