EP0431484B1 - Dispositif pour former une lisière de rentrage - Google Patents

Dispositif pour former une lisière de rentrage Download PDF

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Publication number
EP0431484B1
EP0431484B1 EP90122914A EP90122914A EP0431484B1 EP 0431484 B1 EP0431484 B1 EP 0431484B1 EP 90122914 A EP90122914 A EP 90122914A EP 90122914 A EP90122914 A EP 90122914A EP 0431484 B1 EP0431484 B1 EP 0431484B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
weft thread
stretching
reed
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.)
Expired - Lifetime
Application number
EP90122914A
Other languages
German (de)
English (en)
Other versions
EP0431484A1 (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 insertion 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 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 essentially parallel to the fabric edge, and that the weft thread located in front of the fabric edge is introduced into the next opening tissue compartment by means of an air flow generated by a nozzle.
  • a thread reserve is formed by the stretching nozzle, which comes to lie approximately parallel to the fabric edge due to the retraction of the stretching nozzle together with the reed, so that the weft thread end is now only blown into the next opening compartment by an air stream to form the insertion edge got to.
  • the air flow required for the insertion of the weft end into the next fabric compartment is fan-shaped; for this purpose, 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 end can be produced with the same width of the nozzle, which, due to the longer overhang, can form a firmer insert edge.
  • 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.
  • An upstream 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 effect 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)

Claims (7)

  1. Procédé pour former une lisière de rentrage dans un tissu sur une machine à tisser pneumatique pourvue d'un peigne,
    caractérisé en ce que le fil de trame (7) est conduit à travers une buse d'extension (2) disposée à la suite du peigne (1), en ce que la buse d'extension (2), conjointement avec le peigne (1), est écartée du tissu lors de la fermeture de la foule, de sorte que le fil de trame est tiré hors de la buse d'extension et se place sensiblement parallèlement à la lisière du tissu, et en ce que le fil de trame (7) se trouvant devant la lisière est introduit dans la prochaine foule qui s'ouvre, au moyen d'un jet d'air produit par une buse (13).
  2. Procédé selon la revendication 1, caractérisé en ce que ledit jet d'air produit par la buse (13) est en éventail.
  3. Procédé selon la revendication 1, caractérisé en ce qu'il est prévu, devant la buse d'extension dans la zone du peigne, une buse directrice (6) agencée pour faire entrer le fil de trame (7) dans la buse d'extension (2).
  4. Procédé selon la revendication 2, caractérisé en ce que la buse (13) produisant le jet d'air en éventail comporte plusieurs orifices de buse (13a) disposés les uns au-dessus des autres.
  5. Buse d'extension pour la mise en oeuvre du procédé selon la revendication 1, caractérisée par un canal principal (8) et un canal détourné (9) disposé en forme de C à côté du canal principal, les deux extrémités du canal détourné (9) étant raccordées au canal principal (8), et par une buse (10) disposée perpendiculairement au canal principal (8) à l'entrée du canal détourné (9) pour introduire le fil de trame (7) dans le canal détourné (9).
  6. Buse d'extension selon la revendication 5, caractérisée en ce qu'une autre buse (11) débouche dans le canal détourné (9) et produit une tension supplémentaire du fil de trame (7).
  7. Buse d'extension selon la revendication 5, caractérisée en ce que ladite buse (11) est suivie d'un trou (12) dans le canal détourné (9).
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 EP0431484A1 (fr) 1991-06-12
EP0431484B1 true 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)

Families Citing this family (5)

* 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
DE4424271C1 (de) 1994-07-09 1995-06-29 Dornier Gmbh Lindauer Luftwebmaschinen mit Kantenniederhalter
DE19917953C1 (de) * 1999-04-21 2001-01-25 Dornier Gmbh Lindauer Pneumatisch betriebener Leistenleger für Webmaschinen
US6321796B1 (en) 1999-09-08 2001-11-27 Tsudakoma Kogyo Kabushiki Kaisha Tuck-in apparatus for shuttleless loom
JP2002061052A (ja) * 2000-08-10 2002-02-28 Tsudakoma Corp タックイン装置

Family Cites Families (5)

* 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
LU63368A1 (fr) * 1971-06-18 1973-01-22
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
US4957144A (en) * 1987-12-28 1990-09-18 Nissan Motor Co., Ltd. Tack-in system of shuttleless loom
DE58901147D1 (de) * 1988-07-14 1992-05-21 Sulzer Ag Pneumatische leistenlegevorrichtung fuer webmaschinen.

Also Published As

Publication number Publication date
DE3940279A1 (de) 1991-06-13
ATE101210T1 (de) 1994-02-15
DE3940279C2 (fr) 1991-09-12
EP0431484A1 (fr) 1991-06-12

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