EP0108183B1 - Métier à tisser - Google Patents

Métier à tisser Download PDF

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Publication number
EP0108183B1
EP0108183B1 EP82810473A EP82810473A EP0108183B1 EP 0108183 B1 EP0108183 B1 EP 0108183B1 EP 82810473 A EP82810473 A EP 82810473A EP 82810473 A EP82810473 A EP 82810473A EP 0108183 B1 EP0108183 B1 EP 0108183B1
Authority
EP
European Patent Office
Prior art keywords
weft
sensors
brake
thread
weaving machine
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
Application number
EP82810473A
Other languages
German (de)
English (en)
Other versions
EP0108183A1 (fr
Inventor
Hansjörg Walch
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
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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Priority to EP82810473A priority Critical patent/EP0108183B1/fr
Priority to DE8282810473T priority patent/DE3273230D1/de
Priority to US06/543,169 priority patent/US4527598A/en
Publication of EP0108183A1 publication Critical patent/EP0108183A1/fr
Application granted granted Critical
Publication of EP0108183B1 publication Critical patent/EP0108183B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/34—Weft stop motions
    • 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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed

Definitions

  • the invention relates to a weaving machine, in particular with beam insertion of the weft material, with a device for regulating the weft thread length to be entered by controlling a weft brake on the weft side.
  • the respective point in time of arrival of the weft thread tip is scanned by a sensor arranged on the catch side.
  • the entry speed at the relevant entry mechanism is automatically increased or decreased via a control device, depending on whether the point of arrival is too late or too early relative to the corresponding position of the main shaft of the weaving machine. It is also considered to adjust the time at which a weft brake on the weft side is braked together with the entry speed, so that when the entry speed is adjusted to a higher value, the time at which braking is performed earlier, and when the entry speed is adjusted to a lower value, the time the braking is postponed to a later date.
  • weft ends that protrude from the shed can have different lengths on the catch side. If the thread ends are cut off on the machine, there may be a relatively large loss of thread. If, for example, the thread ends are folded over to form an insertion edge, this can be given a relatively large width in the case of longer weft ends. If necessary, the width of the selvedge can also fluctuate if, for. B. the weft inserted by an air jet and the length of the inserted weft is not always exactly the same.
  • the invention has for its object to provide a particularly improved machine in this regard.
  • the invention consists in that two sensors arranged one behind the other in the extension of the entry path on the catch side are coupled together with the control device and a weft brake on the weft side, whereby by adjusting the weft brake depending on the signals emitted by the sensors, the end position of the weft tip after the braking process in the distance between the two sensors can be regulated during several successive shots. In this way, the protruding weft ends can largely be brought to the same length. When the weft ends are cut off, the thread loss can be reduced. Furthermore, it can be achieved that - with weft thread ends to be inserted - a selvedge of largely constant width is produced, in particular if it is an air jet weaving machine.
  • the figure schematically illustrates the parts of a weaving machine designed according to the invention which are essential for the invention.
  • a weft thread 2 is drawn off from a fixedly arranged weft supply bobbin 1 and wound onto a stationary, non-rotating winding drum 6 via a winding arm 4 of a weft thread store 5 rotating according to arrow 3.
  • Stored windings 7 are formed on it. These are pulled off to the right with each weft insertion in the figure and passed through a weft thread brake 8 into an insertion nozzle 9.
  • the storage device 5 contains a sensor 24, from which the axial length E of the winding formed from the windings 7 can be regulated via a control device 32, not shown, in the sense that if the length E is too great, the winder 4 is stopped, for example, if the length E is too small, the winder 4 is driven again.
  • the nozzle 9 is fed with air from a compressed air source in the rhythm of the weft insertion.
  • the weft thread is inserted through a cutting device 11 into the shed 31 starting at 12 (arrow 21).
  • the weaving width of the machine is denoted by B, the end of the shed on the catch side by 13 and the resulting fabric by 14.
  • the weft thread 2 passes a first sensor 16, then a cutting device 17 and then two further sensors 18, 19.
  • the sensor 16 forms a sensor of a weft thread monitor device, by means of which the presence of the weft thread 2 on the catch side 15 is sensed. If the weft thread 2 does not arrive, the machine is stopped by the sensor 16.
  • the two sensors 18, 19 are connected in series in the direction of the entry (arrow 21) and connected to a control or regulating device 22.
  • the distance between the two sensors 18, 19 is designated C.
  • C forms the range of the target value, in which the tip 2b of the weft thread 2 after the entry - d. H. when the inserted weft thread is stopped.
  • the length of the weft thread end protruding from the shed 31 is designated by 10.
  • sensor 19 Conversely, if the weft thread tip 26 reaches the sensor 19, for example, or possibly reaches the sensor 19 to the right, sensor 19 emits a signal into the device 22, causing the weft brake 8 to close earlier for the next weft insertion is placed. It is thereby achieved in the following weft insertion that the thread tip 26 comes to a standstill again within the desired value range C.
  • the target value range C can be set to a relatively small value by moving the sensors 18, 19 together, so that the weft thread ends 10 have a largely constant length. Both sensors 18, 19 can also be moved close to the cutting device 17, so that the length of the weft ends 10 is comparatively small and the weft thread waste can thus be kept low.
  • control device for the automatic adjustment of the time of the weft brake 8 on another type of weaving machine for. B. used on a bar rapier weaving machine.
  • the weft thread is inserted there into the shed 31 instead of through the air nozzle 9 by means of two rapier rods.
  • the strength of the braking (braking force) of the weft brake 8 can be changed by the sensors 18, 19, in the sense that the braking force of the brake 8 is increased for the next weft insertion when the thread tip 26 detects the sensor 19 reached or happened. Conversely, the braking force of the brake 8 is reduced for the next weft insertion if the weft thread 26 does not reach the sensor 18. The following weft insertion can be carried out again in such a way that the weft thread tip 26 comes to a standstill within the target value range C at the end of the weft insertion.
  • the control device described need not have a comparator (Schartmacher) in the sense that it can only work in a certain angular range of the main shaft of the weaving machine. Rather, the control or regulating device 18, 19, 22 can work without such a comparator or arming device and thus independently of the current position of the main shaft of the weaving machine, because the sensors 18, 19 only the length of the over the edge 13 of the Shed 21 protruding weft thread end 10 is scanned, in particular whether the tip 26 of the thread end 10 comes to a standstill in the area C of the setpoint. This scanning can take place independently of the associated angular range of the main shaft of the weaving machine.
  • the sensors 18, 19 can be kept under tension during the entire working cycle of the weaving machine, so that they are always ready to touch.
  • more than two, e.g. B. three or four sensors arranged one behind the other can be used to scan the stationary weft end 26.
  • the arrangement can, for. B. be made such that when several types of weft yarn are alternately used, a first pair of sensors is used to form the setpoint range of a first type of weft thread, while a second pair of sensors is used to form a setpoint range for a second type of weft thread.
  • the cutting device 17 can optionally be omitted, in particular in the case of weaving machines with insert strips, in which the entire, protruding weft thread end 10 is inserted after the tray has been changed.

Landscapes

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

Claims (1)

  1. Métier à tisser, notamment à insertion de la trame par un jet de fluide, équipé d'un dispositif pour régler la longueur du fil de trame devant être insérée, par commande d'un frein à fils de trame installé du côté trame, caractérisé par le fait que deux détecteurs (18, 19) disposés l'un derrière l'autre côté réception (15), dans le prolongement de la trajectoire d'insertion, sont couplés conjointement au dispositif de réglage (22) et à un frein à fils de trame situé côté trame, de sorte que, grâce à un réglage du frein à fils de trame en fonction des signaux délivrés par les détecteurs (18, 19), la position extrême du bout du fil de trame peut être réglée après le processus de freinage, sur le trajet compris entre les deux détecteurs, pour plusieurs duites successives.
EP82810473A 1982-11-08 1982-11-08 Métier à tisser Expired EP0108183B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP82810473A EP0108183B1 (fr) 1982-11-08 1982-11-08 Métier à tisser
DE8282810473T DE3273230D1 (en) 1982-11-08 1982-11-08 Weaving machine
US06/543,169 US4527598A (en) 1982-11-08 1983-10-19 Control apparatus for a weaving machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82810473A EP0108183B1 (fr) 1982-11-08 1982-11-08 Métier à tisser

Publications (2)

Publication Number Publication Date
EP0108183A1 EP0108183A1 (fr) 1984-05-16
EP0108183B1 true EP0108183B1 (fr) 1986-09-10

Family

ID=8190086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82810473A Expired EP0108183B1 (fr) 1982-11-08 1982-11-08 Métier à tisser

Country Status (3)

Country Link
US (1) US4527598A (fr)
EP (1) EP0108183B1 (fr)
DE (1) DE3273230D1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8207096D0 (sv) * 1982-12-10 1982-12-10 Iro Ab System for temporer upplagring och matning av uppmetta garnlengder foretredesvis till dysvevmaskiner
US4781224A (en) * 1984-07-20 1988-11-01 Nissan Motor Co., Ltd. Loom equipped with weft picking control system
JPH0639735B2 (ja) * 1984-07-24 1994-05-25 日産自動車株式会社 流体噴射式織機の制御装置
US4658866A (en) * 1984-08-06 1987-04-21 Tsudakoma Corp. Method of and apparatus for removing and replacing a broken weft yarn
DE3529110C1 (en) * 1985-08-14 1987-01-02 Sobrevin Soc De Brevets Ind Et Device for sensing the free end of a weft thread flying through the shed of a weaving machine by means of compressed air or the like
CH668444A5 (de) * 1985-09-06 1988-12-30 Zellweger Uster Ag Fangwerk fuer das schussfadeneintragsorgan einer webmaschine.
JPH0819604B2 (ja) * 1986-01-13 1996-02-28 津田駒工業株式会社 流体噴射式織機のよこ入れ自己診断装置
KR910003227B1 (ko) * 1987-03-16 1991-05-24 쯔다고마 고오교오 가부시끼가이샤 급사체의 판별 교환방법
DE4443371C1 (de) * 1994-12-06 1996-01-18 Dornier Gmbh Lindauer Schußfadenstreck- und Detektiereinrichtung für Düsenwebmaschinen
DE19716587C1 (de) * 1997-04-21 1998-09-03 Dornier Gmbh Lindauer Verfahren zur Funktionsüberwachung eines Schußfadenwächters in Luftdüsenwebmaschinen
DE10115172C1 (de) 2001-06-08 2002-12-19 Dornier Gmbh Lindauer Verfahren zum Überwachen des Schussfadeneintrags in Luftdüsenwebmaschinen und Vorrichtung zum Durchführen des Verfahrens
US7048011B2 (en) * 2003-09-10 2006-05-23 Printing Research, Inc. Printing press cylinder flexible jacket covering
NL1027372C2 (nl) * 2004-10-29 2006-05-03 Te Strake Textile B V Weefinrichting.
EP2034061B1 (fr) * 2007-09-10 2010-09-01 ITEMA (Switzerland) Ltd. Dispositif de coupe pour une machine à tisser et son procédé de fonctionnement
CN102776672A (zh) * 2012-07-23 2012-11-14 苏州迪盛织造整理有限公司 金属丝投纬稳定性控制装置及控制方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU632773A1 (ru) * 1977-06-03 1978-11-15 Всесоюзный Научно-Исследовательский Институт По Переработке Химических Волокон Способ подачи уточной нити на пневматическом ткацком станке
JPS5750303Y2 (fr) * 1978-04-04 1982-11-04
NL7908357A (nl) * 1979-11-15 1981-06-16 Rueti Te Strake Bv Werkwijze voor het met behulp van een stromend medium transporteren van een inslagdraad door het weefvak bij een weefmachine, alsmede weefmachine, ingericht voor het toepassen van deze werkwijze.
CH641506A5 (de) * 1980-01-23 1984-02-29 Sulzer Ag Webmaschine.
CH646470A5 (de) * 1980-09-05 1984-11-30 Rueti Ag Maschf Duesenwebmaschine.
CH647279A5 (de) * 1980-10-14 1985-01-15 Loepfe Ag Geb Elektronischer schussfadenwaechter an einer luftduesenwebmaschine.
CH648614A5 (de) * 1980-12-13 1985-03-29 Loepfe Ag Geb Elektronische steuereinrichtung an einer greiferschuetzenwebmaschine.
FR2508501A1 (fr) * 1981-06-30 1982-12-31 Saurer Diederichs Sa Dispositif determinant la longueur de trame a chaque transfert, sur une machine a tisser a vecteur fluide

Also Published As

Publication number Publication date
EP0108183A1 (fr) 1984-05-16
DE3273230D1 (en) 1986-10-16
US4527598A (en) 1985-07-09

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