EP0143119B1 - Dispositif coupe-fil pour métier à tisser, plus particulièrement pour les métiers à tisser à foule linéaire multiple - Google Patents

Dispositif coupe-fil pour métier à tisser, plus particulièrement pour les métiers à tisser à foule linéaire multiple Download PDF

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Publication number
EP0143119B1
EP0143119B1 EP83112063A EP83112063A EP0143119B1 EP 0143119 B1 EP0143119 B1 EP 0143119B1 EP 83112063 A EP83112063 A EP 83112063A EP 83112063 A EP83112063 A EP 83112063A EP 0143119 B1 EP0143119 B1 EP 0143119B1
Authority
EP
European Patent Office
Prior art keywords
blowing tube
cutting member
cutting
looms
cutter according
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
Application number
EP83112063A
Other languages
German (de)
English (en)
Other versions
EP0143119A1 (fr
Inventor
Alois Steiner
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.)
Maschinenfabrik Sulzer Rueti AG
Original Assignee
Maschinenfabrik Sulzer Rueti AG
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 Maschinenfabrik Sulzer Rueti AG filed Critical Maschinenfabrik Sulzer Rueti AG
Priority to EP83112063A priority Critical patent/EP0143119B1/fr
Priority to DE8383112063T priority patent/DE3373504D1/de
Priority to US06/675,235 priority patent/US4576208A/en
Priority to CS849116A priority patent/CS251088B2/cs
Publication of EP0143119A1 publication Critical patent/EP0143119A1/fr
Application granted granted Critical
Publication of EP0143119B1 publication Critical patent/EP0143119B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/70—Devices for cutting weft threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D41/00—Looms not otherwise provided for, e.g. for weaving chenille yarn; Details peculiar to these looms
    • D03D41/005—Linear-shed multiphase looms

Definitions

  • the invention relates to a weft cutting device for weaving machines with at least one pair of scissors, and to the use of the device.
  • High-speed, defenseless weaving machines such as B. projectile weaving machines, water or air jet weaving machines and row shed weaving machines require a cutting device which carries out a cutting movement after each weft insertion. If weft threads from different weft thread bobbins are inserted in such weaving machines, scissors can be present for the weft threads of each individual weft thread bobbin. In particular, row shed machines require a cutter with a pair of scissors for each individual weft thread trace, and which cut movements in sequence.
  • French patent 1,468,156 describes a cutting nozzle with a suction device for defenseless weaving machines.
  • the weft thread is passed through two concentric tubes, which form the scissors and have a common lateral groove.
  • the cutting is done by twisting the two concentric tubes.
  • the remaining thread in the tube is drawn off.
  • Such a pair of scissors requires extremely high precision in the manufacture of the tubes, especially in the area of the grooves with the cutting edges which form the scissors.
  • Such scissors require cylindrical tubes for the scissors. The arrangement of several such scissors too.
  • a cutting device is structurally relatively complex and requires the movement of relatively large masses.
  • the scissors with suction shown in French patent 1,468,156 are only suitable for weft threads that are fed to the cutting device roughly cut to length.
  • the invention has for its object to provide a weft cutting device of the type defined, which is fast-working, has only a small mass, is simple in design and makes it possible to cut the thread length required for the weft insertion for each weft directly from the weft bobbin and to cut off.
  • This object is achieved according to the invention by the features specified in the characterizing part of claim 1.
  • the dependent claims 2 to 6 relate to advantageous embodiments of the invention.
  • Independent claim 7 relates to a particularly advantageous application of the weft thread cutting device.
  • a pair of scissors 1 according to FIG. 1 has a blow pipe 2, to which compressed air is continuously fed through a channel 3 in the wall of the cutting device.
  • the air enters the blow tube through a longitudinal slot 4 in the wall of the blow tube.
  • the blow pipe 2 guides a weft thread 5, which is sucked in by the blown air and fed via a (only partially drawn) guide channel 6 to a shed 7, for example a (also only partially drawn) weaving rotor 8.
  • the weaving rotor rotates in the direction of arrow 9. During the rotation of the weaving rotor, the weft thread 5 is pulled over the edge 10 of the blowpipe 2.
  • the blow pipe 2 is moved forward by a lever 11 and is guided with its mouth 12 into a bore 13 in a fixedly arranged cutting piece 14.
  • the weft thread 5 is cut.
  • a remaining piece of thread 5 ' is carried by the weaving rotor and later separated.
  • the lever 11 moves the blow tube back into the starting position of FIG. 1.
  • a tip 16 of the weft thread 5 is held by the air flowing through the blow tube and is conveyed forward into the guide channel 6 and to the weaving rotor 8 at the beginning of the new entry.
  • the cutting piece does not have to embrace the end of the blowpipe during the cutting process. It is sufficient if the end 12 of the blow pipe moves over the cutting edge 15. Furthermore, an embodiment is possible in which the cutting piece is movable with respect to the blow pipe, whereas the blow pipe is arranged stationary. An embodiment is also possible, wherein both the blow pipe and the cutting piece are movable with respect to one another.
  • scissors are described here with a view of a row shed weaving machine, they can also be used for other types of weaving machines, e.g. B. for rapier projectile weaving machines, generally where it is necessary to cut a weft thread without stopping it in its movement.
  • FIG. 4 shows a more practical embodiment of a pair of scissors.
  • a blow pipe 20 with a rectangular cross section is guided in a channel 21 with a rectangular cross section of a block 22.
  • block 22 there is a bore 23 for supplying blown air.
  • a channel 24 branches off from the bore 23 and opens at 24 ′ into a longitudinal slot 25 in the wall 26 of the channel 21.
  • the blow pipe has a cutting edge 20 'at its mouth.
  • a side wall 27 of the block 22 has a recess 28 which is delimited by a cutting piece 29 with a cutting edge 29 '.
  • An end 30 of Blower tube is located between two pins 31 and 32 of a cutting lever 33.
  • a weft thread 34 to be inserted is sucked in by the blown air which flows into the blower tube 20 from the channel 24 and fed to the weaving rotor through the blower tube via an entry device. If the weft thread is to be cut, it has emerged through the cutout 28 and is pulled by the weaving rotor over the cutting edge 29 'of the blowpipe. At the same time, the blow tube is moved forward by the cutting lever 34 and the weft thread is cut through by the cutting edges 20 'and 29'.
  • the scissors described can be assembled with several others to form a single cutting device. There are as many scissors as there are weft threads to be entered, e.g. B. four or six, depending on the design of the specialist organ, z. B. the web rotor. They are stacked on top of one another and held together by a plate 35.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (7)

1. Dispositif coupe-fil pour métiers à tisser comportant au minimum un ciseau, caractérisé en ce que chaque ciseau (1) présente, guidant le fil de trame (5) et le transportant vers le pas de chaîne, un tube de soufflage (2) qui coopère pour sectionner le fil avec une pièce de coupe (14), ainsi que des moyens (11) pour changer la position relative d'une pièce de coupe (12) et d'un tube de soufflage (2) dans la direction axiale de celui-ci.
2. Dispositif selon la revendication 1, caractérisé en ce que la pièce de coupe (14) consiste en une plaque qui présente un alésage (13) pourvu d'une arête de coupe (15) pour l'entrée de l'orifice (12) du tube de soufflage (2).
3. Dispositif selon la revendication 1, caractérisé en ce que le tube de soufflage (20) est amené dans une pièce de guidage (22) dans la paroi (26) de laquelle est placée une fente oblongue (25) dans laquelle débouche un canal (24) d'arrivée d'air comprimé pour le tuyau de soufflage, en ce que le tube de soufflage est muni d'une arête de coupe (20') et en ce que la pièce de coupe (29) se trouve sur la pièce de guidage et limite dans celle-ci un évidement (28) pour le passage du fil de trame (34).
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les moyens (11) pour changer la position relative de la pièce de coupe (12) et du tube de soufflage (2) translatent le tube de soufflage (2).
5. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les moyens pour changer la position relative de la pièce de coupe (12) et du tube de soufflage (2) translatent la pièce de coupe (12).
6. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les moyens pour changer la position relative de la pièce de coupe (12) et du tube de soufflage (2) translatent la pièce de coupe (12) et le tube de soufflage (2).
7. Utilisation d'un dispositif de coupe selon la revendication 1 dans un métier à tisser à foule linéaire multiple.
EP83112063A 1983-12-01 1983-12-01 Dispositif coupe-fil pour métier à tisser, plus particulièrement pour les métiers à tisser à foule linéaire multiple Expired EP0143119B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP83112063A EP0143119B1 (fr) 1983-12-01 1983-12-01 Dispositif coupe-fil pour métier à tisser, plus particulièrement pour les métiers à tisser à foule linéaire multiple
DE8383112063T DE3373504D1 (en) 1983-12-01 1983-12-01 Weft cutter for looms, especially for linear multiple shed looms
US06/675,235 US4576208A (en) 1983-12-01 1984-11-27 Weft severing device for a weaving machine
CS849116A CS251088B2 (en) 1983-12-01 1984-11-28 Weft cutting device for weaving machines especially for row shed looms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83112063A EP0143119B1 (fr) 1983-12-01 1983-12-01 Dispositif coupe-fil pour métier à tisser, plus particulièrement pour les métiers à tisser à foule linéaire multiple

Publications (2)

Publication Number Publication Date
EP0143119A1 EP0143119A1 (fr) 1985-06-05
EP0143119B1 true EP0143119B1 (fr) 1987-09-09

Family

ID=8190844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112063A Expired EP0143119B1 (fr) 1983-12-01 1983-12-01 Dispositif coupe-fil pour métier à tisser, plus particulièrement pour les métiers à tisser à foule linéaire multiple

Country Status (4)

Country Link
US (1) US4576208A (fr)
EP (1) EP0143119B1 (fr)
CS (1) CS251088B2 (fr)
DE (1) DE3373504D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605333B1 (fr) * 1986-10-15 1989-02-03 Klimovskoe Sp Konstrukt Procede d'insertion de fil de trame en boucle continue sur un metier a tisser a aiguille volante.
US4957144A (en) * 1987-12-28 1990-09-18 Nissan Motor Co., Ltd. Tack-in system of shuttleless loom
EP0624672B1 (fr) * 1993-05-13 1997-09-24 Sulzer RàœTi Ag Dispositif de distribution du fil de trame pour métier à tisser multiphasé à foule linéaire
EP0624673B1 (fr) * 1993-05-13 1997-09-17 Sulzer RàœTi Ag Dispositif de distribution du fil de trame pour métier à tisser multiphasé à foule linéaire et métier avec un tel dispositif de distribution
DE59305157D1 (de) * 1993-05-21 1997-02-27 Rueti Ag Maschf Schneidvorrichtung für Schussfäden und Webmaschine mit einer solchen Vorrichtung
JP3498799B2 (ja) * 1995-06-02 2004-02-16 ズルテックス アクチェンゲゼルシャフト 開口直列配置型織機の緯糸分配装置
DE59707877D1 (de) * 1997-11-28 2002-09-05 Sulzer Textil Ag Rueti Verfahren und Vorrichtung zum Eintragen eines Schussfadens in einer Reihenfachwebmaschine

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA656605A (en) * 1963-01-29 H. Cerny Eric Method and apparatus for distributing a yarn
GB1054743A (fr) * 1963-02-06
FR1419036A (fr) * 1964-10-13 1965-11-26 Prive Des Inv S Modernes O F P Perfectionnements aux dispositifs de retenue et de coupe des fils de trame sur les métiers à tisser à fausse navette à duites coupées
FR1468156A (fr) * 1966-02-14 1967-02-03 Embouchure de coupe et d'aspiration de fils de trame pour métiers à tisser sans navette
CH464106A (de) * 1967-10-13 1968-10-15 Fischer Ag Georg Einrichtung zur Steuerung einer Schussgarn-Schneidevorrichtung einer Webmaschine
US3487436A (en) * 1968-03-18 1969-12-30 Vladimir Svaty Weft thread cutting arrangement
US3570339A (en) * 1969-02-06 1971-03-16 Leesona Corp Yarn handling method and apparatus
FR2191544A5 (en) * 1972-06-26 1974-02-01 Rhone Poulenc Textile Yarn cutting - by blade and sliding block which creates partial blockage in yarn path
GB1478856A (en) * 1975-02-19 1977-07-06 Ayrton & Co Ltd W Zarn cutting device
US4134434A (en) * 1976-03-11 1979-01-16 Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi Weft cutting device in looms with mechanisms for multi weft weaving
JPS5338755A (en) * 1976-09-17 1978-04-10 Atsushi Kitamura Loom without shuttle equipped with selvage cutting device
US4275773A (en) * 1978-10-12 1981-06-30 Nissan Motor Company, Limited Weft cutting device in shuttleless loom
GB2068422B (en) * 1980-02-01 1983-09-14 Nat Res Dev Weft patterning
BE885714A (nl) * 1980-10-15 1981-04-15 Picanol Nv Inslaginbrenginrichting voor luchtweefgetouwen
JPS58104247A (ja) * 1981-12-11 1983-06-21 株式会社豊田自動織機製作所 流体噴射式織機における不良緯糸処理方法

Also Published As

Publication number Publication date
US4576208A (en) 1986-03-18
DE3373504D1 (en) 1987-10-15
CS251088B2 (en) 1987-06-11
EP0143119A1 (fr) 1985-06-05

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