EP0853692B1 - Vorrichtung zum strecken eines eingetragenen schussfadens, insbesondere für eine luftdüsenwebmaschine - Google Patents

Vorrichtung zum strecken eines eingetragenen schussfadens, insbesondere für eine luftdüsenwebmaschine Download PDF

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Publication number
EP0853692B1
EP0853692B1 EP96934506A EP96934506A EP0853692B1 EP 0853692 B1 EP0853692 B1 EP 0853692B1 EP 96934506 A EP96934506 A EP 96934506A EP 96934506 A EP96934506 A EP 96934506A EP 0853692 B1 EP0853692 B1 EP 0853692B1
Authority
EP
European Patent Office
Prior art keywords
wear
passage
resistant
branch passage
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.)
Expired - Lifetime
Application number
EP96934506A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0853692A1 (de
Inventor
Jean-Marie Bamelis
Chris Delanote
Jozef Peeters
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.)
Picanol NV
Original Assignee
Picanol NV
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 Picanol NV filed Critical Picanol NV
Publication of EP0853692A1 publication Critical patent/EP0853692A1/de
Application granted granted Critical
Publication of EP0853692B1 publication Critical patent/EP0853692B1/de
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
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D03D47/308—Stretching or holding the weft

Definitions

  • the invention relates to a device for stretching a registered weft thread, especially for an air jet loom, one to a weft insertion channel of a reed adjoining channel into which a blowing nozzle empties into a substantially perpendicular from this channel branching, at least one deflection point for the weft having branch duct is directed.
  • the invention has for its object a device to improve the type mentioned.
  • the at least one Deflection point is formed from a wear-resistant insert, which is essentially transverse to the direction of insertion of the weft is arranged.
  • the invention is based on the consideration that the deflection point or deflection points due to wear subject to ongoing weft so that after a certain Operating time the effect of the device changes and also, if applicable, the one entering the device and wefts held in them will be damaged can. Because of the or the wear-resistant elements on the or the deflection points ensures that a constant Function guaranteed over a longer operating time while reducing the risk that the device damaged the weft threads.
  • the branch channel a curved course and flows back into the channel one, two at the entrance of the branch duct each a deflection point for the weft forming, wear-resistant elements are arranged.
  • the Friction of the weft thread at the deflection points and the applied pneumatic forces cause the weft thread to spring back contrary, the existing conditions also remain the same over a longer period of operation because the deflection points are designed as wear-resistant elements and therefore not essential even after a long period of operation Subject to wear.
  • the device 1 for stretching is together on a sley 2 attached with a reed 3.
  • the reed 3 exists from a multitude of slats that open on one side Form U-shaped weft insertion channel 4.
  • the stretching device 1 has a housing-like body, who with a directly to the weft entry channel 4 of the Reed 3 connecting channel 5 is also provided a U-shaped, essentially the weft insertion channel 4 has the corresponding cross section and in the direction of entry A extends in the weft insertion channel 4.
  • a branch channel branches 6 from the channel 5, the first section approximately directed perpendicular to the channel 5 from the sley 2 and then with an approximately cylindrical curvature into one passes over to the second section, which leads back to channel 5.
  • a blowing nozzle is on the inlet opening of the branch duct 6 8 directed, facing in the sley 2, opposite the entry channel 4 slightly offset bottom 13 of the channel 5 opens. Because of this remote arrangement, the Blowing the incoming weft thread into the branch duct 6 facilitated.
  • the branch duct 6 is by means of the duct 5 a thread guide element separated in the thread running direction an approximately pear-shaped or teardrop-shaped overall cross-section having.
  • the thread guide element has the side of the entrance of the branch duct 6 a wear-resistant Element 7, which has a cylindrical shape and forms an apex deflection for a weft thread 14.
  • wear-resistant element 7 On this essentially transversely to the entry direction A of the weft 14 arranged wear-resistant element 7 includes Support element 12 on, the component of the housing-like body or can be a separate component.
  • a wear-resistant Element 11 is located at the exit of the branch duct 6 on the side facing the channel 5.
  • the support element 12 is designed so that it is compared to the wear-resistant Elements 7 and 11 guided weft 14 reset is. The support element therefore touches the weft not and therefore cannot cause damage, even if there was a burr.
  • the two wear-resistant Elements 7 and 10 are essentially transverse to Blowing direction of the blowing nozzle 8 and have curved outer surfaces.
  • blow nozzle 9 runs essentially in Direction of the second section of the branch duct 6, which to leads back to channel 5.
  • the one emerging from the blowing nozzle 9 Airflow ensures that the weft 14 is secure the wear-resistant element 7 and also to the wear-resistant Element 11 creates.
  • the blow nozzle 8 two or more has small blowing openings from which compressed air with good the blown nozzle is blown out 9 only a larger blow opening.
  • the wear-resistant element 7 has a cross section that corresponds essentially to the cross section of the branch duct 6, so that the thread runs along a relatively large Stretch on the wear-resistant element 7 creates.
  • the wear-resistant elements 7 and 11 and the support element 12 consist of a component, which is then a pear-shaped or has a teardrop-shaped cross section.
  • the housing-like Body of the device 1 attached a connector 20 to which a compressed air supply line can be attached.
  • a connector 20 to which a compressed air supply line can be attached.
  • the body can be made, for example, by injection molding the shape of the duct 5 and the branch duct 6 and the blowing nozzles 8 and 9 and the supply channels 15, 16 and 17 are molded in injection molding.
  • Another one Solution is poured only while the outside shape of the body the duct 5 and the branch duct 6 are produced by milling become.
  • the supply channels 15, 16 and 17 as well as the blow nozzles 8, 9 are then realized through holes, the Supply channels 16 and 17 by means of sealing plugs 18 and 19 be closed.
  • the wear-resistant elements 7, 10 and 11, the deflection points form for a weft 14, have rounded for the weft Contact surfaces. They are preferably cylindrical Bodies that are easy to manufacture and assemble. There they are wear-resistant, they are subject to a relatively low level Wear, so that the risk of damage to the thread end a weft thread 14 is reduced.
  • the most wear-resistant Elements 7, 10 and 11 are in a first Embodiment designed as a ceramic body. Another one Embodiment they are metal or plastic basic elements, which have a wear-resistant coating are.
  • a detector 21 is arranged at the outlet end thereof, in which a weft 14 is blown.
  • this detector 21 which is also attached to the sley 2, it is for example possible to recognize a weft 14 that is too long.
  • the device for stretching the weft known in Way through the main blow nozzles and relay nozzles
  • Weft insertion channel 4 of the reed 3 is blown through, is first the weft 14 through the blow nozzle 8 to the wear-resistant element 7 deflected and then by the other Blow nozzle 9 deflected around the wear-resistant element 7.
  • a return of the weft thread 14 after the weft insertion is blown due to the action of the blow nozzles 8 and 9 Air flow and due to the friction of the weft 14 in particular on the wear-resistant element 7 and also prevented on the wear-resistant element 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP96934506A 1995-10-02 1996-10-01 Vorrichtung zum strecken eines eingetragenen schussfadens, insbesondere für eine luftdüsenwebmaschine Expired - Lifetime EP0853692B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE9500814A BE1009619A6 (nl) 1995-10-02 1995-10-02 Strekinrichting voor weefmachines.
BE9500814 1995-10-02
PCT/EP1996/004282 WO1997013017A1 (de) 1995-10-02 1996-10-01 Vorrichtung zum strecken eines eingetragenen schussfadens, insbesondere für eine luftdüsenwebmaschine

Publications (2)

Publication Number Publication Date
EP0853692A1 EP0853692A1 (de) 1998-07-22
EP0853692B1 true EP0853692B1 (de) 2002-05-02

Family

ID=3889211

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96934506A Expired - Lifetime EP0853692B1 (de) 1995-10-02 1996-10-01 Vorrichtung zum strecken eines eingetragenen schussfadens, insbesondere für eine luftdüsenwebmaschine

Country Status (6)

Country Link
US (1) US6014990A (ja)
EP (1) EP0853692B1 (ja)
JP (1) JP4070237B2 (ja)
BE (1) BE1009619A6 (ja)
DE (1) DE59609162D1 (ja)
WO (1) WO1997013017A1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19802254C1 (de) * 1998-01-22 1999-08-05 Dornier Gmbh Lindauer Schußfadenstreck- und -detektiereinrichtung für Düsenwebmaschinen, insbesondere mit pneumatischem Schußeintrag
DE20107885U1 (de) 2001-05-10 2001-10-11 Dornier Gmbh Lindauer Halteeinrichtung für die Enden von Schussfäden bei einer Luftdüsenwebmaschine
DE50300789D1 (de) * 2002-04-26 2005-08-25 Sultex Ag Rueti Fang- und Haltevorrichtung für das fangseitige Schussfadenende in einer Webmaschine
DE10261774A1 (de) * 2002-12-20 2004-07-01 Picanol N.V. Vorrichtung und Verfahren zum Strecken
US20080271807A1 (en) * 2006-09-07 2008-11-06 Sultex Ag Method and a stretching device for the holding of a weft thread

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1000989A3 (nl) * 1987-10-09 1989-05-30 Picanol Nv Inrichting voor het strekken van een inslagdraad bij weefmachines.
EP0342135A1 (fr) * 1988-05-10 1989-11-15 S.A. Saurer Diederichs Dispositif d'aspiration et de retenue du fil de trame, pour machine à tisser avec insertion de trame pneumatique
US4976292A (en) * 1988-06-27 1990-12-11 Tagawa Kikai Co., Ltd. Weft end tensioning and detecting devices for shuttleless loom
FR2643657B1 (fr) * 1989-02-20 1994-08-12 Toyoda Automatic Loom Works Tissu tridimensionnel et procede pour sa fabrication
BE1005230A3 (nl) * 1991-01-04 1993-06-01 Picanol Nv Inrichting voor het strekken van een inslagdraad bij weefmachines.
DE4311918A1 (de) * 1993-04-10 1994-10-13 Kloecker Entwicklungs Gmbh Eine dem Webblatt nachgeordnete Vorrichtung zum Bremsen eines mittels Luftstrom eingetragenen Schußfadens
DE4443371C1 (de) * 1994-12-06 1996-01-18 Dornier Gmbh Lindauer Schußfadenstreck- und Detektiereinrichtung für Düsenwebmaschinen
DE19545839C1 (de) * 1995-12-08 1996-08-29 Dornier Gmbh Lindauer Verfahren und Webmaschine zur Handhabung eines Schußfadens

Also Published As

Publication number Publication date
JPH11512790A (ja) 1999-11-02
DE59609162D1 (de) 2002-06-06
JP4070237B2 (ja) 2008-04-02
WO1997013017A1 (de) 1997-04-10
EP0853692A1 (de) 1998-07-22
US6014990A (en) 2000-01-18
BE1009619A6 (nl) 1997-06-03

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