EP0735170A1 - Procédé d'augmentation de la capacité d'insertion de trame d'un métier à air et tuyère pour la mise en oeuvre du procédé - Google Patents

Procédé d'augmentation de la capacité d'insertion de trame d'un métier à air et tuyère pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0735170A1
EP0735170A1 EP96101390A EP96101390A EP0735170A1 EP 0735170 A1 EP0735170 A1 EP 0735170A1 EP 96101390 A EP96101390 A EP 96101390A EP 96101390 A EP96101390 A EP 96101390A EP 0735170 A1 EP0735170 A1 EP 0735170A1
Authority
EP
European Patent Office
Prior art keywords
air flow
thread feed
feed tube
nozzle
weft
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.)
Granted
Application number
EP96101390A
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German (de)
English (en)
Other versions
EP0735170B1 (fr
Inventor
Peter D. Dornier
Adnan Dr. Wahnoud
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 EP0735170A1 publication Critical patent/EP0735170A1/fr
Application granted granted Critical
Publication of EP0735170B1 publication Critical patent/EP0735170B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D03D47/28—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
    • D03D47/30—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 by gas jet
    • D03D47/3006—Construction of the nozzles
    • D03D47/3013—Main nozzles

Definitions

  • the invention relates to a method for increasing the performance of weft insertion into a shed of an air jet loom and insertion nozzle for carrying out the method.
  • An entry nozzle for an air weaving machine with adjustable air flow acceleration is previously known from EP 0 239 137 B1.
  • This entry nozzle essentially consists of a nozzle housing with an axially displaceable or fixedly arranged thread supply tube, an air supply channel for the nozzle medium which is concentrically enclosed by the nozzle housing, and a mixing tube which is in the extension of the thread supply tube and optionally axially displaceable or fixed in the housing is arranged, and wherein the air supply channel ends between the end of the thread supply tube and the mixing tube.
  • the object of the invention is therefore to provide a method for gentle entrainment of the weft thread and at the same time for increasing the performance of the entry nozzle of a weaving machine. It is also an object of the invention to provide an entry nozzle for carrying out the method.
  • Tests by the applicant have based on comparative measurements between the invention. trained entry nozzle and known entry nozzles shown that at a pressure of the air flow between 1.0 to 6.0 bar, the force transmission to the weft by about 10% to 30%, depending on the ratio of the end section-outer diameter of the weft feed tube to the start section-inner diameter of the mixing tube , is higher.
  • the invention Solution guaranteed, and this is confirmed by measurement results from the applicant, that at a pre-pressure of 1.0 bar there is suction at the entrance of the weft feed tube of below - 100 mbar, which guarantees the threading function of the weft thread in the entry nozzle.
  • the machine speed could be increased to 128% without the quality of the fabric being adversely affected.
  • the entry nozzle 1 for inserting the weft thread 2 in a shed consists according to Fig. 1 from a thread feed tube 3, from a concentrically surrounded by a housing 4 air supply duct 5 for an air pressure supplied via the nozzle 6, see also arrow 7, and from a mixing tube 8, which is in the extension of the thread feed tube 3 within the feed nozzle 1 is arranged.
  • Both the thread feed tube 3 and the mixing tube 8 can be arranged axially displaceably in the direction of the double arrows 9 and 10 in the housing 4, in order to overlap, see also detail Z, between the end section 3a of the thread feed tube 3 and the start section 8a of the mixing tube 8 to accelerate the air flow.
  • the end section 3a is formed, for example, in the manner of an outer cone and the beginning section 8a, for example in the manner of an inner cone.
  • An air flow channel 5a with an annular cross-sectional area is formed between the outer cone and the inner cone, see also FIG. 3, the cross section of which is variable when the thread feed tube 3 or the mixing tube 8 is axially adjustable in order to give the air flow the desired acceleration.
  • the annular air flow channel 5a opens into a circularly enclosed air flow channel 8b of the mixing tube 8.
  • the cross-sectional area of the air flow channel 8b is larger compared to the cross-sectional area of the air flow channel 5a.
  • the end section 3a of the thread feed pipe 3 has the invention. eg incisions 11, for example in the manner of a notch, which are preferably arranged symmetrically about the central axis 12 of the thread feed tube 3. It has been found to be advantageous when inserting the weft thread if the opening angle of the incision in question is 11 ⁇ 90 °.
  • FIGS. 4 and 5 show the end section 3a of the thread feed tube 3, the wall of which has more than 2 incisions 11.
  • openings 13, 14, 15 are provided in the manner of through bores, which are made in one or more circumferential rows in the wall of the end section 3a. It is advantageous if the bores are arranged at an acute angle to the central axis 12 in the air flow direction, see also arrows 7. It is also advantageous if the cross-sectional areas of both the incisions 11 and the rows of bores 13, 14, 15 increase in the direction of the end face of the thread feed tube 3 in the end section 3a.
  • the air supply takes place via the nozzle 6 with a certain pressure potential.
  • This air flow enters the annular air supply duct 5 and the tapered one Air flow channel 5a, which is formed by the overlap of the start portion 8a of the mixing tube 8 and the end portion 3a of the thread feed tube 3.
  • the air flow experiences an acceleration, as a result of which it can assume a supersonic speed.
  • the invention is achieved. the expansion process is shifted into the thread feed tube 3 by means of precautions in the end section 3a of the thread feed tube 3. This has the consequence that the air flow speed is reduced and the weft thread is carried gently and at an earlier point in time than is known.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Coiling Of Filamentary Materials In General (AREA)
EP96101390A 1995-03-29 1996-02-01 Procédé d'augmentation de la capacité d'insertion de trame d'un métier à air et tuyère pour la mise en oeuvre du procédé Expired - Lifetime EP0735170B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19511439 1995-03-29
DE19511439A DE19511439C1 (de) 1995-03-29 1995-03-29 Verfahren zur Leistungssteigerung beim Schußfadeneintrag in ein Webfach einer Luftdüsenwebmaschine und Eintragsdüse zur Durchführung des Verfahrens

Publications (2)

Publication Number Publication Date
EP0735170A1 true EP0735170A1 (fr) 1996-10-02
EP0735170B1 EP0735170B1 (fr) 2001-05-30

Family

ID=7758005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101390A Expired - Lifetime EP0735170B1 (fr) 1995-03-29 1996-02-01 Procédé d'augmentation de la capacité d'insertion de trame d'un métier à air et tuyère pour la mise en oeuvre du procédé

Country Status (4)

Country Link
US (1) US5697405A (fr)
EP (1) EP0735170B1 (fr)
JP (1) JP2635954B2 (fr)
DE (2) DE19511439C1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW484184B (en) 1998-11-06 2002-04-21 Canon Kk Sample separating apparatus and method, and substrate manufacturing method
DE20003070U1 (de) * 2000-02-19 2000-04-20 Staedtler & Uhl Fixkamm für eine Kämm-Maschine
JP4461650B2 (ja) * 2001-07-11 2010-05-12 株式会社豊田自動織機 エアジェットルームにおける緯糸搬送ノズル
US6497257B1 (en) 2002-02-28 2002-12-24 Glen Raven, Inc. Control of fill yarn during basket weave type patterns on air jet looms
DE10224078A1 (de) * 2002-05-31 2003-12-18 Dornier Gmbh Lindauer Verfahren zum Gestreckthalten eines Schussfadens und Webmaschine zur Verfahrensdurchführung
JP2004270080A (ja) * 2003-03-10 2004-09-30 Toyota Industries Corp ジェットルームにおける糸抜け防止装置
DE102004036996B3 (de) * 2004-07-30 2005-12-01 Lindauer Dornier Gmbh Duesenwebmaschine, insbesondere Luftdüsenwebmaschine, mit einer Klemmeinrichtung im Mischrohr
JP2007308825A (ja) * 2006-05-17 2007-11-29 Toyota Central Res & Dev Lab Inc エアジェットルームにおける緯入れ装置
DE102006025968B3 (de) * 2006-06-02 2007-11-29 Lindauer Dornier Gmbh Verfahren zum Klemmen eines Schussfadens in einer Düsenwebmaschine, insbesondere Luftdüsenwebmaschine, Klemmeinrichtung und Düsenwebmaschine
US7748414B2 (en) * 2006-12-12 2010-07-06 Itema (Switzerland) Ltd Method and apparatus for the insertion of weft threads
JP5008185B2 (ja) * 2007-03-30 2012-08-22 津田駒工業株式会社 緯入れノズル
JP2009007694A (ja) 2007-06-27 2009-01-15 Tsudakoma Corp 緯入れノズルおよび緯入れノズルに用いられる緯糸のノズル抜け防止部材
ITMI20090336A1 (it) * 2009-03-06 2010-09-07 Promatech Spa Ugello di lancio con mezzi di ritegno di trama per un telaio tessile ad aria.
CN103510249A (zh) * 2013-09-24 2014-01-15 吴江唯奇布业有限公司 一种带整流气室的喷气织机用喷嘴
CN103526433A (zh) * 2013-10-25 2014-01-22 吴江唯奇布业有限公司 一种喷气织机喷嘴
CN107853285A (zh) * 2017-11-10 2018-03-30 桐乡守敬应用技术研究院有限公司 一种农业防护材料
JP2023183167A (ja) * 2022-06-15 2023-12-27 株式会社豊田自動織機 エアジェット織機の緯糸搬送ノズル

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH610366A5 (en) * 1976-09-27 1979-04-12 Rueti Ag Maschf Device for inserting weft threads into a shed
GB2085487A (en) * 1980-10-15 1982-04-28 Nissan Motor A weft inserting nozzle of an air jet type weaving loom
FR2550235A1 (fr) * 1983-08-01 1985-02-08 Vyzk Vyvojovy Ustav Dispositif d'insertion de trame pour machines de tissage a jet
DE3527751A1 (de) * 1984-08-23 1986-02-27 Elitex Zavody Textilniho Duese zum schussfadeneintragen einer pneumatischen duesenwebmaschine
NL8503440A (nl) * 1985-12-13 1987-07-01 Picanol Nv Hoofdblazer voor luchtweefmachines.
EP0239137A1 (fr) * 1986-02-21 1987-09-30 Picanol N.V. Dispositif pour l'insertion de fils de trame dans la foule de métiers à tisser à jet d'air et tuyères ajustables utilisées dans ce but
EP0273473A1 (fr) * 1986-12-02 1988-07-06 Picanol N.V. Injecteur principal avec force de tension augmentée pour métiers à tisser à jet d'air
EP0418948A1 (fr) * 1989-09-19 1991-03-27 Picanol N.V. Dispositif de soufflage pour les fils de trame dans les métiers à tisser

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57501869A (fr) * 1980-11-17 1982-10-21
US5282779A (en) * 1991-12-09 1994-02-01 Mitsubishi Rayon Company Ltd. Air jet for producing filter plug for cigarette
IT1266636B1 (it) * 1993-10-27 1997-01-09 Nuovo Pignone Spa Ugello principale perfezionato per telaio tessile ad aria

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH610366A5 (en) * 1976-09-27 1979-04-12 Rueti Ag Maschf Device for inserting weft threads into a shed
GB2085487A (en) * 1980-10-15 1982-04-28 Nissan Motor A weft inserting nozzle of an air jet type weaving loom
FR2550235A1 (fr) * 1983-08-01 1985-02-08 Vyzk Vyvojovy Ustav Dispositif d'insertion de trame pour machines de tissage a jet
DE3527751A1 (de) * 1984-08-23 1986-02-27 Elitex Zavody Textilniho Duese zum schussfadeneintragen einer pneumatischen duesenwebmaschine
NL8503440A (nl) * 1985-12-13 1987-07-01 Picanol Nv Hoofdblazer voor luchtweefmachines.
EP0239137A1 (fr) * 1986-02-21 1987-09-30 Picanol N.V. Dispositif pour l'insertion de fils de trame dans la foule de métiers à tisser à jet d'air et tuyères ajustables utilisées dans ce but
EP0273473A1 (fr) * 1986-12-02 1988-07-06 Picanol N.V. Injecteur principal avec force de tension augmentée pour métiers à tisser à jet d'air
EP0418948A1 (fr) * 1989-09-19 1991-03-27 Picanol N.V. Dispositif de soufflage pour les fils de trame dans les métiers à tisser

Also Published As

Publication number Publication date
US5697405A (en) 1997-12-16
DE59606975D1 (de) 2001-07-05
JP2635954B2 (ja) 1997-07-30
EP0735170B1 (fr) 2001-05-30
DE19511439C1 (de) 1996-03-14
JPH0921035A (ja) 1997-01-21

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