EP3106555B1 - Gripper weaving loom with a pneumatic device for the removal of wrong wefts from the gripper path and method - Google Patents

Gripper weaving loom with a pneumatic device for the removal of wrong wefts from the gripper path and method Download PDF

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Publication number
EP3106555B1
EP3106555B1 EP16173466.0A EP16173466A EP3106555B1 EP 3106555 B1 EP3106555 B1 EP 3106555B1 EP 16173466 A EP16173466 A EP 16173466A EP 3106555 B1 EP3106555 B1 EP 3106555B1
Authority
EP
European Patent Office
Prior art keywords
gripper
loom
wrong
weft
air flows
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.)
Active
Application number
EP16173466.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3106555A1 (en
Inventor
Fabio Rabolini
Diego Poletti
Roberto NAVA
Walter GUERINONI
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.)
Itema SpA
Original Assignee
Itema SpA
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 Itema SpA filed Critical Itema SpA
Publication of EP3106555A1 publication Critical patent/EP3106555A1/en
Application granted granted Critical
Publication of EP3106555B1 publication Critical patent/EP3106555B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/24—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick by gripper or dummy shuttle
    • 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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/277—Guide mechanisms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/04—Auxiliary apparatus combined with or associated with looms for treating weft

Definitions

  • the present invention relates to a gripper weaving loom with a device for the removal of wrong wefts from the gripper path and to a method for the removal of wrong wefts that makes use of such a device.
  • the invention relates to a device as above which temporarily removes wrong wefts, outside the shed, during the stop transient of the loom as a result of the insertion of a wrong weft.
  • composition of the device for the removal of wrong wefts is particularly simple and includes an electrovalve 1, controlled by the loom control unit, to which a compressed-air supply 2 and a small tube for air distribution 3 are connected, respectively upstream and downstream, the small tube 3 having a series of holes 4 on its side surface, acting as nozzles for the emission of compressed-air jets.
  • the small tube 3 can be replaced with a specific channel, formed inside the carrying gripper guide G, wherein holes 4 are opened for the formation of the desired air jets.
  • the device operation is also particularly simple and effective.
  • the device program included into the loom central control unit provides that, when the loom central control unit detects the presence of a wrong weft, in addition to starting the usual loom stop procedure - which involves braking and stopping the grippers movement, in one/two cycles, and simultaneously deactivating the weft presenting machine so that said cycles are carried out idly, i.e. without insertion of wefts - the activation of the electrovalve 1 into the open position is also immediately controlled, so that a compressed air flow is ejected from the holes 4 of the small tube 3, causing a lifting action on the loose weft which is positioned in that area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP16173466.0A 2015-06-16 2016-06-08 Gripper weaving loom with a pneumatic device for the removal of wrong wefts from the gripper path and method Active EP3106555B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUB20151437 2015-06-16

Publications (2)

Publication Number Publication Date
EP3106555A1 EP3106555A1 (en) 2016-12-21
EP3106555B1 true EP3106555B1 (en) 2019-08-07

Family

ID=55358045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16173466.0A Active EP3106555B1 (en) 2015-06-16 2016-06-08 Gripper weaving loom with a pneumatic device for the removal of wrong wefts from the gripper path and method

Country Status (3)

Country Link
EP (1) EP3106555B1 (zh)
JP (1) JP6856980B2 (zh)
CN (1) CN106256937B (zh)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1093423A (zh) * 1993-04-07 1994-10-12 金刚铁工厂股份有限公司 自动除纬装置
JPH07133551A (ja) * 1993-11-09 1995-05-23 Tsudakoma Corp レピア織機における不良緯糸処理装置
FR2908426B1 (fr) * 2006-11-15 2009-05-29 Schonherr Textilmaschb Gmbh Dispositif d'insertion de trame,metier a tisser pour tapis equipe d'un tel dispositif et procede de traitement d'un defaut d'insertion de trame dans un tel metier
EP2230341A1 (de) * 2009-03-18 2010-09-22 ITEMA (Switzerland) Ltd. Verfahren und Speichervorrichtung zum Speichern von Schussfäden in einer Webmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN106256937B (zh) 2020-09-15
CN106256937A (zh) 2016-12-28
EP3106555A1 (en) 2016-12-21
JP6856980B2 (ja) 2021-04-14
JP2017036534A (ja) 2017-02-16

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