EP0747520A2 - Procédé et dispositif pour le tirage pneumatique commandé de fils de trame pour la réparation de fil de trame cassé sur métiers à jet d'air - Google Patents

Procédé et dispositif pour le tirage pneumatique commandé de fils de trame pour la réparation de fil de trame cassé sur métiers à jet d'air Download PDF

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Publication number
EP0747520A2
EP0747520A2 EP96108676A EP96108676A EP0747520A2 EP 0747520 A2 EP0747520 A2 EP 0747520A2 EP 96108676 A EP96108676 A EP 96108676A EP 96108676 A EP96108676 A EP 96108676A EP 0747520 A2 EP0747520 A2 EP 0747520A2
Authority
EP
European Patent Office
Prior art keywords
thread
weft
specific properties
weaving machine
weft thread
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.)
Withdrawn
Application number
EP96108676A
Other languages
German (de)
English (en)
Other versions
EP0747520A3 (fr
Inventor
Adnan Dr.-Ing. Wahhoud
Josef Hehle
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.)
Lindauer Dornier GmbH
Original Assignee
Lindauer Dornier GmbH
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 Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP0747520A2 publication Critical patent/EP0747520A2/fr
Publication of EP0747520A3 publication Critical patent/EP0747520A3/fr
Withdrawn legal-status Critical Current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
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/06—Driving, starting, or stopping arrangements; Automatic stop motions using particular methods of stopping
    • D03D51/08—Driving, starting, or stopping arrangements; Automatic stop motions using particular methods of stopping stopping at definite point in weaving cycle, or moving to such point after stopping
    • D03D51/085—Extraction of defective weft

Definitions

  • the invention relates to a method for the controlled pneumatic pulling of a defective and twisted, single- or multi-thread weft thread that has caused a weaving stop from the fabric stop edge with the shed open and a device for carrying out the method.
  • suitable nozzles e.g. a twisted single or multi-thread weft thread is entered into a shed and attached to the stop edge of the fabric by means of a reed.
  • the entry of the weft thread and the control of the nozzles required for this takes place depending on certain thread-specific parameters.
  • thread-specific parameters are, for example, the density of the thread or its weight per unit length and its surface quality.
  • the pneumatic extraction then takes place either through a suitable negative pressure of a suction nozzle arranged after the exit of the shed or through an injector nozzle.
  • a sensor to determine whether a weft thread is held in the pulling device or whether the weft thread has already been completely pulled off the fabric stop edge.
  • the sensors usually used work on an optical basis. A weft thread that only moves in the direction of its longitudinal axis is not reliably detected by these sensors. It is therefore intended to use a pull-off device which also sets the thread in movements perpendicular to its longitudinal axis.
  • the object of the present invention is therefore to provide a method and a device for the pneumatic pulling of a weft thread from the fabric stop edge, according to which a reliable pulling of the weft thread is made possible in the course of a weft breakage elimination.
  • sucking and accessible rotating flow is generated depending on the thread-specific properties in a pull-off device arranged at the exit of the shed.
  • the rotation and / or the strength of the suction flow are generated as a function of certain thread-specific properties.
  • twist direction of the weft thread and any other necessary parameters are entered by the machine control.
  • any other necessary parameters such as the tensile strength
  • An essential advantage of the invention in this preferred development is that it is no longer possible to unravel the weft thread. This leads to an improved pulling off of the weft thread.
  • the relevant thread-specific properties of each weft thread are predefined for the control of the machine.
  • This control unit is informed of which weft thread has just been inserted and, in the event of a machine stop, it can accordingly control the pneumatic removal during the automatic weft breakage elimination due to a faulty weft thread being entered.
  • the puller itself can be designed in the form of an injector nozzle, which is described in more detail with reference to the accompanying figures. However, it is of course also possible to carry out any other type of pneumatic pulling.
  • injector nozzles are not necessarily possible, but, of course, air baffles or the like which can be adjusted accordingly are also possible.
  • a main nozzle 1 is provided in a manner known per se, which enters a weft thread 2 into a shed 23 along the stop edge 3a of a fabric 3.
  • a sensor 4 and a puller 5 are provided at the end of the shed 23.
  • a cutting device 6 and a clamping device 7 are provided between the input side of the shed 23 and the main nozzle 1.
  • the pull-off device 5 is designed as an injector nozzle according to FIG.
  • An interior space 8 is provided, which is acted upon either from the inlet 9 or from the inlet 10.
  • inlet 9 is acted upon, there is consequently a rotation of the suction flow in the direction of arrow 11, while when inlet 10 is acted upon, a rotation of the suction flow in arrow direction 12 is generated.
  • either the input 9 or the input 10 of the pulling device 5 can be acted on, which results in a corresponding rotation in the direction of the arrow 11 or 12 of the suction flow. Unraveling of the weft thread 2 or tearing of the weft thread thereon is thus successfully avoided.
  • Figure 3 shows an embodiment with different weft threads.
  • the weft thread 2b has been inserted from the main nozzle 1b and is to be removed again from the fabric stop edge 3a of the fabric 3 by means of the puller 5.
  • the controller 13 of the machine is informed which main nozzle 1a, 1b, 1c has delivered the last weft insertion and, for this reason, knows the respective thread-specific properties of the inserted weft thread 2b.
  • a first pressure accumulator 14 or a second pressure accumulator 15 is actuated, each of which acts on the inputs 9 or 10 of the pull-off device 5 shown in FIG. This results in a twist-direction-controlled pneumatic pulling of the weft thread 2b.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP96108676A 1995-06-09 1996-05-30 Procédé et dispositif pour le tirage pneumatique commandé de fils de trame pour la réparation de fil de trame cassé sur métiers à jet d'air Withdrawn EP0747520A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19521100 1995-06-09
DE19521100A DE19521100C1 (de) 1995-06-09 1995-06-09 Kontrollierte Absaugung an Webmaschinen

Publications (2)

Publication Number Publication Date
EP0747520A2 true EP0747520A2 (fr) 1996-12-11
EP0747520A3 EP0747520A3 (fr) 1997-09-24

Family

ID=7764031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96108676A Withdrawn EP0747520A3 (fr) 1995-06-09 1996-05-30 Procédé et dispositif pour le tirage pneumatique commandé de fils de trame pour la réparation de fil de trame cassé sur métiers à jet d'air

Country Status (4)

Country Link
US (1) US5746256A (fr)
EP (1) EP0747520A3 (fr)
JP (1) JP2857103B2 (fr)
DE (1) DE19521100C1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10224078A1 (de) * 2002-05-31 2003-12-18 Dornier Gmbh Lindauer Verfahren zum Gestreckthalten eines Schussfadens und Webmaschine zur Verfahrensdurchführung
US6997215B2 (en) * 2003-03-24 2006-02-14 Sultex Ag Method for weaving low flaw cloths by means of the elimination of weft thread sections which have irregularities
CN102146611B (zh) * 2010-11-17 2013-07-10 江苏万工科技集团有限公司 一种织机内部气流流动装置
DE102012208158B3 (de) * 2012-05-15 2013-09-05 Lindauer Dornier Gmbh Luftdüsenwebmaschine mit einer Vorrichtung zur Druckluftversorgung
BE1024099B1 (nl) * 2015-01-07 2017-11-16 Nv Michel Van De Wiele Gaapvormingsinrichting met ventilatie-inrichting
DE102016208186A1 (de) 2016-05-12 2017-11-16 Rwth Aachen Bildbasierte Webfachüberwachung zur Unterstützung der automatisierten Behebung von Schusseintragsfehlern in Luftdüsenwebmaschinen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0207470A2 (fr) 1985-06-29 1987-01-07 Nissan Motor Co., Ltd. Méthode et système pour enlever un fil de trame mal inséré
EP0309013A1 (fr) 1987-08-26 1989-03-29 Picanol N.V. Procédé pour retirer un fil de trame fautif de la foule sur un métier à tisser et métier à tisser utilisant ce procédé
EP0310804A2 (fr) 1987-09-11 1989-04-12 Picanol N.V. Dispositif pour éloigner un fil de trame cassé pour un métier à tisser à jet d'air

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61167048A (ja) * 1985-01-17 1986-07-28 株式会社豊田自動織機製作所 流体噴射式織機における緯糸吸引装置
JPH01156553A (ja) * 1987-12-08 1989-06-20 Toyota Autom Loom Works Ltd 無杼織機のミス糸自動除去装置におけるミス糸搬送装置
CS274515B1 (en) * 1987-12-29 1991-04-11 Pajgrt Jan Method of loosening and repairing weft defectively inserted into shed on jet loom
CS276602B6 (en) * 1988-02-25 1992-07-15 Texing Brno Method of weft preparation and its removing from the closed shed of the jet weaving machine
BE1001507A3 (nl) * 1988-03-10 1989-11-14 Picanol Nv Werkwijze voor het uit de gaap verwijderen van een los foutief inslagdraadgedeelte bij weefmachines.
JPH0726287B2 (ja) * 1989-08-11 1995-03-22 株式会社石川製作所 空気噴射式織機の不良糸除去装置
EP0421511A1 (fr) * 1989-10-04 1991-04-10 Picanol N.V. Procédé et dispositif pour l'alimentation de fils de trame dans la foule d'un métier à jet d'air
BE1005230A3 (nl) * 1991-01-04 1993-06-01 Picanol Nv Inrichting voor het strekken van een inslagdraad bij weefmachines.
IT1251495B (it) * 1991-09-18 1995-05-15 Somet Soc Mec Tessile Metodo per l'estrazione automatica dal passo di un filo di trama rotto in telai di tessitura ad aria e dispositivo pneumomeccanico di avvolgimento utilizzato in detto metodo
JPH05230740A (ja) * 1992-02-18 1993-09-07 Tsudakoma Corp 巻き付け糸排出方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0207470A2 (fr) 1985-06-29 1987-01-07 Nissan Motor Co., Ltd. Méthode et système pour enlever un fil de trame mal inséré
US4781221A (en) 1985-06-29 1988-11-01 Nissan Motor Co., Ltd. Mispicked weft yarn removing method and system therefor
EP0309013A1 (fr) 1987-08-26 1989-03-29 Picanol N.V. Procédé pour retirer un fil de trame fautif de la foule sur un métier à tisser et métier à tisser utilisant ce procédé
EP0310804A2 (fr) 1987-09-11 1989-04-12 Picanol N.V. Dispositif pour éloigner un fil de trame cassé pour un métier à tisser à jet d'air

Also Published As

Publication number Publication date
DE19521100C1 (de) 1996-07-11
JPH09119043A (ja) 1997-05-06
JP2857103B2 (ja) 1999-02-10
US5746256A (en) 1998-05-05
EP0747520A3 (fr) 1997-09-24

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