EP0735170B1 - Verfahren zur Leistungssteigerung beim Schussfadeneintrag in ein Webfach einer Luftdüsenwebmaschine und Eintragsdüse zur Durchführung des Verfahrens - Google Patents

Verfahren zur Leistungssteigerung beim Schussfadeneintrag in ein Webfach einer Luftdüsenwebmaschine und Eintragsdüse zur Durchführung des Verfahrens Download PDF

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Publication number
EP0735170B1
EP0735170B1 EP96101390A EP96101390A EP0735170B1 EP 0735170 B1 EP0735170 B1 EP 0735170B1 EP 96101390 A EP96101390 A EP 96101390A EP 96101390 A EP96101390 A EP 96101390A EP 0735170 B1 EP0735170 B1 EP 0735170B1
Authority
EP
European Patent Office
Prior art keywords
air stream
supply tube
thread supply
tube
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.)
Expired - Lifetime
Application number
EP96101390A
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German (de)
English (en)
French (fr)
Other versions
EP0735170A1 (de
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/de
Application granted granted Critical
Publication of EP0735170B1 publication Critical patent/EP0735170B1/de
Anticipated expiration legal-status Critical
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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 in a shed of an air jet loom and entry nozzle for implementation of the procedure.
  • This entry nozzle consists essentially of a nozzle housing with a therein axially displaceable or fixedly arranged thread feed tube, one Air supply duct for the nozzle medium, which is concentric from the nozzle housing is enclosed, and a mixing tube, which is in the extension of the Thread feed tube and optionally axially displaceable or fixed in the housing is arranged, and wherein the air supply duct between the end of the Thread feed tube and the mixing tube ends.
  • the object of the invention is therefore to provide a method for taking the Weft and at the same time to increase the performance of the entry nozzle To create loom. It is also an object of the invention to provide an entry nozzle to specify to carry out the procedure.
  • 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 there is a suction of less than 100 mbar at the inlet of the weft feed tube at a pre-pressure of 1.0 bar, which guarantees the threading function of the weft yarn in the entry nozzle.
  • the machine speed could be reduced to 128% be increased without adversely affecting the quality of the fabric.
  • the entry nozzle 1 for inserting the weft thread 2 in a shed, not shown, is 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 3 a.
  • 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 Verfahren zur Leistungssteigerung beim Schussfadeneintrag in ein Webfach einer Luftdüsenwebmaschine und Eintragsdüse zur Durchführung des Verfahrens Expired - Lifetime EP0735170B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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
DE19511439 1995-03-29

Publications (2)

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

Family

ID=7758005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101390A Expired - Lifetime EP0735170B1 (de) 1995-03-29 1996-02-01 Verfahren zur Leistungssteigerung beim Schussfadeneintrag in ein Webfach einer Luftdüsenwebmaschine und Eintragsdüse zur Durchführung des Verfahrens

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2014808A2 (en) 2007-06-27 2009-01-14 Tsudakoma Kogyo Kabushiki Kaisha Weft insertion nozzle and weft-fall-out preventing component used in weft insertion nozzle

Families Citing this family (16)

* 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
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

Family Cites Families (11)

* 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
JPS5771445A (en) * 1980-10-15 1982-05-04 Nissan Motor Wefting nozzle of air jet type loom
JPS57501869A (ja) * 1980-11-17 1982-10-21
CS249259B1 (en) * 1983-08-01 1987-03-12 Frantisek Vykydal Pick insertion device for jet loom
CS247783B1 (en) * 1984-08-23 1987-01-15 Miroslav Hrus Nozzle for weft threads' carrying on jet looms
NL8503440A (nl) * 1985-12-13 1987-07-01 Picanol Nv Hoofdblazer voor luchtweefmachines.
BE904260A (nl) * 1986-02-21 1986-08-21 Picanol Nv Inrichting voor de insertie van inslagdraden in de gaap bij luchtweefmachines en regelbare blazers hierbij toegepast.
NL8603069A (nl) * 1986-12-02 1988-07-01 Picanol Nv Hoofdblazer met verhoogde trekkracht voor weefmachines.
BE1003558A3 (nl) * 1989-09-19 1992-04-21 Picanol Nv Blaasinrichting voor inslagdraden bij weefmachines.
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2014808A2 (en) 2007-06-27 2009-01-14 Tsudakoma Kogyo Kabushiki Kaisha Weft insertion nozzle and weft-fall-out preventing component used in weft insertion nozzle

Also Published As

Publication number Publication date
US5697405A (en) 1997-12-16
DE59606975D1 (de) 2001-07-05
EP0735170A1 (de) 1996-10-02
DE19511439C1 (de) 1996-03-14
JPH0921035A (ja) 1997-01-21
JP2635954B2 (ja) 1997-07-30

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