EP0431484A1 - Dispositif pour former une lisière de rentrage - Google Patents

Dispositif pour former une lisière de rentrage Download PDF

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Publication number
EP0431484A1
EP0431484A1 EP90122914A EP90122914A EP0431484A1 EP 0431484 A1 EP0431484 A1 EP 0431484A1 EP 90122914 A EP90122914 A EP 90122914A EP 90122914 A EP90122914 A EP 90122914A EP 0431484 A1 EP0431484 A1 EP 0431484A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
weft thread
reed
fabric
channel
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
EP90122914A
Other languages
German (de)
English (en)
Other versions
EP0431484B1 (fr
Inventor
Christoph Schwemmlein
Matthias Klöcker
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.)
Kloecker Entwicklungs GmbH
Original Assignee
Kloecker Entwicklungs 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 Kloecker Entwicklungs GmbH filed Critical Kloecker Entwicklungs GmbH
Priority to AT90122914T priority Critical patent/ATE101210T1/de
Publication of EP0431484A1 publication Critical patent/EP0431484A1/fr
Application granted granted Critical
Publication of EP0431484B1 publication Critical patent/EP0431484B1/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
    • D03D47/40—Forming selvedges
    • D03D47/48—Forming selvedges by inserting cut end of weft in next shed, e.g. by tucking, by blowing

Definitions

  • the invention relates to a method for forming an insert edge in a fabric on a pneumatic weaving machine provided with a reed, and a drawing nozzle, in particular a drawing nozzle for forming an insert edge in a fabric, on a pneumatic weaving machine provided with a reed.
  • Inlay edges for fabrics are known. These essentially serve to provide the fabric with a beaded edge. For this purpose, it is known to insert the end of the weft thread of a compartment after it has been closed into the opening of the next compartment.
  • the mechanical means for forming an insert edge are structurally very complex and therefore expensive, but also very fragile.
  • the invention is therefore based on the object of providing a method for forming an insert edge by which the disadvantages mentioned above are avoided.
  • the task also includes the formation of a stretching nozzle through which the insert edge can advantageously be formed.
  • the method according to the invention is characterized in that the weft thread is guided through a drawing nozzle arranged downstream of the reed, that the drawing nozzle is removed from the fabric together with the reed when the fabric is closed, the The weft thread is pulled out of the stretching nozzle and comes to lie in front of the fabric edge, and that the weft thread located in front of the fabric edge is inserted into the next opening tissue compartment by means of an air flow generated by a nozzle.
  • a thread reserve is formed by the drawing nozzle, which comes to lie approximately parallel to the fabric edge due to the retraction of the drawing nozzle together with the reed, so that to form the insert edge the weft end is now only blown into the next opening compartment by an air stream got to.
  • the air flow required to insert the weft end into the next fabric compartment is fan-shaped;
  • a nozzle with a plurality of nozzle openings arranged one above the other is provided.
  • a straightening nozzle is provided in the area of the reed directly in front of the drawing nozzle.
  • the stretching nozzle which in particular also serves to form the insertion edge, is characterized by a main channel and a deflecting channel arranged in a C-shape relative to the main channel, the deflecting channel in each case being connected at the end to the main channel, and a nozzle arranged perpendicular to the main channel at the entrance of the deflecting channel for the entry of the weft thread in the deflection channel.
  • a larger projecting weft thread end can be produced with the same width of the nozzle, whereby a firmer insert edge can be formed due to the longer protrusion. It should be noted in this regard that in order to form a longer weft end, the weft thread does not protrude from the drawing nozzle, since the drawing nozzle is immediately followed by a control device with which thread breaks are registered.
  • a further nozzle opens into the deflection channel, which causes the weft thread to be tightened further.
  • a bore is provided in the deflection channel, which is arranged downstream of the nozzle for the additional tightening of the thread. Through this hole it is achieved that lint introduced into the stretching nozzle is discharged through the hole so that they cannot get into the control device. This prevents interruptions in the production process.
  • the device for forming an insert edge consists of a reed 1, a stretching nozzle denoted overall by 2 and a control device denoted by 3.
  • a stretching nozzle denoted overall by 2
  • a control device denoted by 3.
  • In front of the reed 1 is an air nozzle 4, through which the weft thread 7 is inserted through the reed tunnel 5 into the stretching nozzle.
  • a further nozzle 6 is arranged in the region of the reed tunnel, which serves to guide the weft thread 7 in order to ensure that it runs into the stretching nozzle 2.
  • the control device 3 immediately downstream of the stretching nozzle 2 serves to determine whether the weft thread has broken.
  • the predetermined length of the weft thread ensures that it cannot get into the area of this control device 3; Only when there is a broken thread does the weft thread or part of the weft thread reach the control device, which registers the running-in of the weft thread and stops the machine.
  • the drawing nozzle 2 itself consists essentially of a main channel 8 and a deflection channel 9.
  • a nozzle 10 is arranged at an approximately perpendicular angle to the main channel, which ensures that the incoming weft thread 7 in the Deflection channel 9 is entered.
  • a further nozzle 11 which exerts an additional stretching action on the weft thread 7.
  • an opening 12 is provided at the end of the deflection channel 9, through which at least some of the fluff formed during weaving is carried out of the deflection channel in order to prevent it from entering the drawing nozzle Subordinate control device 3 run in and thereby possibly bring the machine to a standstill.
  • the insertion edge is now produced in such a way that after the insertion of the weft thread 7 into the deflection channel 9 of the drawing nozzle, the drawing nozzle 2 is pivoted together with the reed from the previously vertical position, the weft thread being moved out of the drawing nozzle or out during this movement of the drawing nozzle the deflection channel of the stretching nozzle is pulled out and comes to lie parallel to the fabric edge.
  • the weft thread or the end of the weft thread is introduced into the next opening compartment by the fan-like air flow generated by the nozzle 13 with the openings 13a arranged one above the other.
  • the weft is tied when the compartment is closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP90122914A 1989-12-06 1990-11-30 Dispositif pour former une lisière de rentrage Expired - Lifetime EP0431484B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90122914T ATE101210T1 (de) 1989-12-06 1990-11-30 Verfahren zum bilden einer einlegekante.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3940279 1989-12-06
DE3940279A DE3940279A1 (de) 1989-12-06 1989-12-06 Verfahren zum bilden einer einlegekante

Publications (2)

Publication Number Publication Date
EP0431484A1 true EP0431484A1 (fr) 1991-06-12
EP0431484B1 EP0431484B1 (fr) 1994-02-02

Family

ID=6394887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122914A Expired - Lifetime EP0431484B1 (fr) 1989-12-06 1990-11-30 Dispositif pour former une lisière de rentrage

Country Status (3)

Country Link
EP (1) EP0431484B1 (fr)
AT (1) ATE101210T1 (fr)
DE (1) DE3940279A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4424271C1 (de) * 1994-07-09 1995-06-29 Dornier Gmbh Lindauer Luftwebmaschinen mit Kantenniederhalter
EP1083253A1 (fr) * 1999-09-08 2001-03-14 Tsudakoma Kogyo Kabushiki Kaisha Dispositif à replier les bouts de fil de trame dans un métier à tisser sans navette
EP1179624A1 (fr) * 2000-08-10 2002-02-13 Tsudakoma Kogyo Kabushiki Kaisha Dispositif de rentrage des fils de trame

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4131167A1 (de) * 1991-09-19 1993-03-25 Dornier Gmbh Lindauer Luftwebmaschine mit einrichtung zur bildung einer gewebegasse
DE19917953C1 (de) * 1999-04-21 2001-01-25 Dornier Gmbh Lindauer Pneumatisch betriebener Leistenleger für Webmaschinen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE725262C (de) * 1939-09-02 1942-09-18 Sulzer Ag Vorrichtung zum Herstellen fester Kanten bei Geweben
FR2141808A1 (fr) * 1971-06-18 1973-01-26 Dewas Raymond
EP0351361A1 (fr) * 1988-07-14 1990-01-17 GebràœDer Sulzer Aktiengesellschaft Appareil pneumatique pour la formation de lisières dans les métiers à tisser
US4957144A (en) * 1987-12-28 1990-09-18 Nissan Motor Co., Ltd. Tack-in system of shuttleless loom

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0291744A3 (fr) * 1987-05-19 1991-08-07 Zvs Vyzkumnevyvojovy Ustav Koncernova Ucelova Organizace Dispositif pour la formation de lisières du type à fil rentré dans les métiers à tisser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE725262C (de) * 1939-09-02 1942-09-18 Sulzer Ag Vorrichtung zum Herstellen fester Kanten bei Geweben
FR2141808A1 (fr) * 1971-06-18 1973-01-26 Dewas Raymond
US4957144A (en) * 1987-12-28 1990-09-18 Nissan Motor Co., Ltd. Tack-in system of shuttleless loom
EP0351361A1 (fr) * 1988-07-14 1990-01-17 GebràœDer Sulzer Aktiengesellschaft Appareil pneumatique pour la formation de lisières dans les métiers à tisser

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4424271C1 (de) * 1994-07-09 1995-06-29 Dornier Gmbh Lindauer Luftwebmaschinen mit Kantenniederhalter
EP0695821A1 (fr) 1994-07-09 1996-02-07 Lindauer Dornier Gesellschaft M.B.H Métier à air avec guide de lisière
US5570726A (en) * 1994-07-09 1996-11-05 Lindauer Dornier Gesellschaft Mbh Air weaving loom with weft hold-down members and enlarged inlet and outlet weft insertion channel
EP1083253A1 (fr) * 1999-09-08 2001-03-14 Tsudakoma Kogyo Kabushiki Kaisha Dispositif à replier les bouts de fil de trame dans un métier à tisser sans navette
US6321796B1 (en) 1999-09-08 2001-11-27 Tsudakoma Kogyo Kabushiki Kaisha Tuck-in apparatus for shuttleless loom
EP1179624A1 (fr) * 2000-08-10 2002-02-13 Tsudakoma Kogyo Kabushiki Kaisha Dispositif de rentrage des fils de trame

Also Published As

Publication number Publication date
EP0431484B1 (fr) 1994-02-02
ATE101210T1 (de) 1994-02-15
DE3940279A1 (de) 1991-06-13
DE3940279C2 (fr) 1991-09-12

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