EP0462926A1 - Extraction de fils de trame cassés sur métiers à tisser sans navette - Google Patents

Extraction de fils de trame cassés sur métiers à tisser sans navette Download PDF

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Publication number
EP0462926A1
EP0462926A1 EP91810385A EP91810385A EP0462926A1 EP 0462926 A1 EP0462926 A1 EP 0462926A1 EP 91810385 A EP91810385 A EP 91810385A EP 91810385 A EP91810385 A EP 91810385A EP 0462926 A1 EP0462926 A1 EP 0462926A1
Authority
EP
European Patent Office
Prior art keywords
weft
shed
thread
rollers
projectile
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Withdrawn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
EP91810385A
Other languages
German (de)
English (en)
Inventor
Hubertus Henricus Aarts
Antonius Josephus Maria Hamer
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 EP0462926A1 publication Critical patent/EP0462926A1/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Withdrawn legal-status Critical Current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
    • D03D51/06—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 devices for handling weft threads when repairing weft breakage on projectile weaving machines; it also relates to projectile weaving machines with such devices and methods for eliminating weft breakage.
  • EP-PA-0290383 (T.732) describes a mechanical auxiliary device which, on the one hand, serves to counter the broken weft thread from the shed pulling out frictional forces caused by the warp threads, which on the other hand serves to temporarily store the thread before it is removed from this auxiliary device by means of a suction tube. It is an object of the invention to provide a device which feeds the weft thread to be removed to a collecting container by mechanical means and by means of a suction device without intermediate storage.
  • the solution of the invention task is given by the characterizing features of claim 1. It consists of a pair of take-off rollers with which the broken weft thread is fed to the suction opening of a suction device. With at least one gripping element, the weft thread is gripped at the shed at the beginning of the weft break repair and inserted between the take-off rollers, so that the thread can then be fed into the suction element.
  • a hook helps to insert the weft thread between the take-off rollers.
  • Claims 7 and 8 relate to projectile weaving machines with devices according to the invention, while claims 9 to 11 relate to methods for eliminating weft breakage.
  • FIG. 1 The following components can be seen in FIG. 1: the clamp 1 of the thread take-up device, this being in its front position; the scissors 2 in the cutting position; the centering wing 3, which is pivotable to the rear; the gripping member 4; the suction member 5; the puller roller pair 6; the thread monitor 7; the reed 10; the warp threads 11 forming the shed and the fabric 12.
  • the thread take-up with the clamp 1 is part of a weft mechanism, not shown, in which the projectile is prepared for the weft insertion. It is intended to use the device according to the invention in projectile weaving machines in which thread stores are located upstream of the weft mechanism and in which an injector nozzle for thread transport is arranged between each thread store and the weft mechanism.
  • the device according to the invention for eliminating the thread break is used as follows:
  • the thread 13 is then pulled upwards with the gripping member 4 (double arrow D), a loop being formed by pulling thread from the shed and from the thread store.
  • One side of the loop, namely the thread piece 13a is in front of the suction opening 5a Extractor 5 brought.
  • Air intake (arrow A) leads the thread piece 13a into the suction element 5 in the form of a loop.
  • the withdrawal of the thread 13a from the thread store is advantageously supported with the injector nozzle mentioned above.
  • the other side of the loop, the thread piece 13b is then inserted by means of the hook 8 between the two rollers 6a, 6b of the pull-off roller pair 6 driven by the drive 6c.
  • the gripping member 4 for example the shape of a thread clamp as described in EP-A-0290383.
  • This thread clamp with a servomotor for a pivotable clamping jaw is actuated by means of a manipulator designed as an automatic machine.
  • the hook 8, for which other embodiments are of course also conceivable, is also actuated when the thread piece 13b is inserted between the take-off rollers (double arrow E) by means of an automatic machine (not shown).
  • the aforementioned force sensor enables overload protection, which, when a critical thread tension force is exceeded, interrupts the removal of the weft break so that it can then be continued manually.
  • the broken weft thread 13b is completely removed from the shed by the suction element 5 with the aid of the pulling roller pair 6 and possibly the injector nozzle at the outlet of the thread store.
  • the completion of this process step can be initiated with the thread monitor 7, which registers the exit of the thread end.
  • the weft break repair ends on the input side of the shed with the fact that the weft thread 13 is held in place by the clamp 1 of the thread feeder, the thread 13 is cut off with the scissors 2 and the separated thread piece 13a is conveyed away into a collecting container by the suction element 5.
  • the other part of the broken weft thread, which has been transported further with the projectile, can be removed on the output side of the shed with the same device as on the input side in a corresponding manner.
  • weft thread breaks between the thread store and the shed, the inserted weft thread can be woven in. In this case, the threading in the weft mechanism only has to be carried out again. This can be done as follows: With the injector nozzle between the accumulator and the weft mechanism, a piece of weft thread 13 is pulled off the accumulator and blown over the centering wing 3 and the warp threads 11. This piece can be gripped by means of the gripping member 4 and first inserted into the throat of the centering wing 3.
  • the weft thread 13 can be drawn to the suction member 5 with the gripping member 4 and sucked in by this, whereby after the thread is released by the gripping member 4 the already known final phase of the weft break repair is created. To Cutting and suctioning off the excess piece of thread 13a, the weaving operation can be resumed.
  • FIG. 2 shows a second embodiment of the device according to the invention, with which the broken weft thread 15 on the exit side of the shed can be removed.
  • the following components can be seen in FIG. 2: the catching brake 20 for the projectile 16; a pivotable suction element 30 with a gripping element 31 arranged at its suction opening; a pair of take-off rollers 6 with a pivotable roller 6a, with a directly driven roller 6b and a drive 6c; a suction channel 32 and two blowing nozzles 35 and 36; the warp threads 11 and the fabric 12.
  • the catch brake 20 the lower brake shoe 21 and the projectile ejection channel 22 are also indicated; however, projectile pushers, projectile openers, ejectors and upper brake shoes are not shown.
  • the weft 15 can be torn out of the compartment and can also be thrown into the catch brake 20.
  • a blowing nozzle 36 is provided on the side next to the catching brake 20, with which the thread 15 can be blown out again into the space between the shed and the catching brake 20.
  • the suction element 30 which is mounted, for example, on the housing of the safety brake 20, and by actuating the gripping element 31 (arrow U).
  • the thread piece hanging down on the gripping member 31 can be inserted between the take-off rollers 6a and 6b.
  • the puller roller pair 6 must be opened beforehand, for example by pivoting the Roll 6a, as shown in Fig.2 (double arrow W).
  • the catching of the weft thread 15 by the gripping member 31 can be supported in that air is sucked in via the suction member 30 (arrow A ') and, on the other hand, a bundled air flow is generated by means of the air nozzle 35, which exerts a suction effect on the weft thread 15.
  • the thread After inserting the weft thread 15 'between the take-off rollers and after loosening the projectile clamp, the thread can be fed to a collecting container (not shown) by means of the suction member 30. Another possibility is to submit the weft thread 15 'by means of the gripping member 31 to a suction channel 32 arranged above the take-off roller pair 6, via which the thread is removed by suction (arrow A ⁇ ).
  • the puller roller pair 6 is not required. After loosening the projectile clamp, the short piece of thread 15 with the blowing nozzle 35 is blown directly, for example, into the downwardly pivoted suction member 30 or into the suction channel 32, where it is suctioned off and fed to the collecting container. It is advantageous if the suction channel 32 is flexible in the second example and its mouthpiece can be moved to a lower position 32 '. It is then sufficient for the blowing jet 35 to eliminate the thread piece 15.
EP91810385A 1990-06-21 1991-05-22 Extraction de fils de trame cassés sur métiers à tisser sans navette Withdrawn EP0462926A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH207590 1990-06-21
CH2075/90 1990-06-21

Publications (1)

Publication Number Publication Date
EP0462926A1 true EP0462926A1 (fr) 1991-12-27

Family

ID=4225319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91810385A Withdrawn EP0462926A1 (fr) 1990-06-21 1991-05-22 Extraction de fils de trame cassés sur métiers à tisser sans navette

Country Status (4)

Country Link
US (1) US5199468A (fr)
EP (1) EP0462926A1 (fr)
JP (1) JPH04241146A (fr)
RU (1) RU2051229C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015067465A1 (fr) * 2013-11-07 2015-05-14 Picanol Dispositif de retrait d'un fil de trame

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3339884B2 (ja) * 1992-08-21 2002-10-28 津田駒工業株式会社 織機の不良緯糸除去装置
KR940009396A (ko) * 1992-10-02 1994-05-20 고시바 헤이지 다색용 레피아 직기에 있어서의 불량위사 분리장치
EP0617153B1 (fr) * 1993-03-26 1996-10-09 Sulzer RàœTi Ag Procédé pour influencer le mouvement d'un fil de trame tiré d'une bobine de réserve vers le dispositif d'insertion de trame d'un métier à tisser et métier à tisser pour l'exécution de ce procédé
US5546735A (en) * 1994-07-19 1996-08-20 Brooks; Carleton Horse hoof sandal
DE59607707D1 (de) * 1995-06-28 2001-10-25 Dornier Gmbh Lindauer Kombinierte Schussfadenklemm- und -schneideinrichtung für Luftdüsenwebmaschinen
DE59908000D1 (de) * 1998-09-02 2004-01-22 Sultex Ag Rueti Verfahren und System zum Eintragen eines Schussfadens in einer Greiferwebmaschine
DE10213639C1 (de) * 2002-03-27 2003-12-18 Dornier Gmbh Lindauer Verfahren und Vorrichtung zum Zubringen eines geklemmten Schussfadens zu einem Bringergreifer einer Webmaschine
DE202004003308U1 (de) * 2004-03-01 2005-07-14 Wangner Gmbh & Co. Kg Vorrichtung zur Minimierung von Maschinenstillstandszeiten infolge von Spulenwechsels an Webmaschinen
FR2981091B1 (fr) * 2011-10-06 2013-12-20 Michelin Soc Tech Dispositif et procede d'extraction de trames dans une nappe de renfort destinee a la fabrication d'un pneumatique

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2248353A1 (fr) * 1973-10-20 1975-05-16 Dornier Gmbh Lindauer
FR2527655A1 (fr) * 1982-06-01 1983-12-02 Rueti Te Strake Bv Metier a tisser sans navette comprenant un moyen pour retirer des fils defectueux de trame, de la foule
FR2537168A1 (fr) * 1982-12-01 1984-06-08 Rueti Te Strake Bv Metier a tisser sans navette comprenant un moyen pour retirer, de la foule, des fils defectueux de trame
EP0171057A2 (fr) * 1984-08-06 1986-02-12 Tsudakoma Corporation Dispositif et procédé pour réparer un fil de trame dans un inséreur de trames
US4664157A (en) * 1985-01-09 1987-05-12 Tsukakoma Corp. Incomplete weft removing device for shuttleless loom
EP0236597A1 (fr) * 1986-03-11 1987-09-16 Tsudakoma Corporation Dispositif pour éloigner un fil de trame cassé à un métier à tisser sans navette
EP0332257A1 (fr) * 1988-03-10 1989-09-13 Picanol N.V. Procédé pour retirer une pièce de fil de trame fautif de la foule d'un métier à tisser
US4890650A (en) * 1987-08-25 1990-01-02 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Detecting and removing faulty weft in a jet loom

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5477764A (en) * 1977-12-01 1979-06-21 Nissan Motor Yarn end treating apparatus of fragment loom
US4749006A (en) * 1984-07-26 1988-06-07 Tsudakoma Kogyo Kabushiki Kaisha Automatic method and apparatus for removing a faulty weft on a loom
EP0290383B1 (fr) * 1987-05-08 1991-06-05 GebràœDer Sulzer Aktiengesellschaft Moyen pour retirer un fil de trame défectueux de la foule d'un métier à tisser
EP0355281B1 (fr) * 1988-07-14 1993-08-18 Nissan Motor Co., Ltd. Système d'enfilage de la trame pour métier à tuyères

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2248353A1 (fr) * 1973-10-20 1975-05-16 Dornier Gmbh Lindauer
FR2527655A1 (fr) * 1982-06-01 1983-12-02 Rueti Te Strake Bv Metier a tisser sans navette comprenant un moyen pour retirer des fils defectueux de trame, de la foule
FR2537168A1 (fr) * 1982-12-01 1984-06-08 Rueti Te Strake Bv Metier a tisser sans navette comprenant un moyen pour retirer, de la foule, des fils defectueux de trame
EP0171057A2 (fr) * 1984-08-06 1986-02-12 Tsudakoma Corporation Dispositif et procédé pour réparer un fil de trame dans un inséreur de trames
US4664157A (en) * 1985-01-09 1987-05-12 Tsukakoma Corp. Incomplete weft removing device for shuttleless loom
EP0236597A1 (fr) * 1986-03-11 1987-09-16 Tsudakoma Corporation Dispositif pour éloigner un fil de trame cassé à un métier à tisser sans navette
US4890650A (en) * 1987-08-25 1990-01-02 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Detecting and removing faulty weft in a jet loom
EP0332257A1 (fr) * 1988-03-10 1989-09-13 Picanol N.V. Procédé pour retirer une pièce de fil de trame fautif de la foule d'un métier à tisser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015067465A1 (fr) * 2013-11-07 2015-05-14 Picanol Dispositif de retrait d'un fil de trame
BE1021785B1 (nl) * 2013-11-07 2016-01-18 Picanol Inrichting voor het verwijderen van inslagdraad
CN105874113A (zh) * 2013-11-07 2016-08-17 必佳乐公司 用于移除纬纱的装置

Also Published As

Publication number Publication date
US5199468A (en) 1993-04-06
JPH04241146A (ja) 1992-08-28
RU2051229C1 (ru) 1995-12-27

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