EP0150057B1 - Procédé de fonctionnement d'un métier à tisser et dispositif pour exécuter ce procédé - Google Patents

Procédé de fonctionnement d'un métier à tisser et dispositif pour exécuter ce procédé Download PDF

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Publication number
EP0150057B1
EP0150057B1 EP85100491A EP85100491A EP0150057B1 EP 0150057 B1 EP0150057 B1 EP 0150057B1 EP 85100491 A EP85100491 A EP 85100491A EP 85100491 A EP85100491 A EP 85100491A EP 0150057 B1 EP0150057 B1 EP 0150057B1
Authority
EP
European Patent Office
Prior art keywords
weft
weft yarn
shed
reed
nozzle
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
EP85100491A
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German (de)
English (en)
Other versions
EP0150057A3 (en
EP0150057A2 (fr
Inventor
Paul Gunnemann
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.)
Rueti Te Strake BV
Original Assignee
Rueti Te Strake BV
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
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Application filed by Rueti Te Strake BV filed Critical Rueti Te Strake BV
Publication of EP0150057A2 publication Critical patent/EP0150057A2/fr
Publication of EP0150057A3 publication Critical patent/EP0150057A3/de
Application granted granted Critical
Publication of EP0150057B1 publication Critical patent/EP0150057B1/fr
Expired 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
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means

Definitions

  • the invention relates to a loom with fluid entry of the weft threads into the shed, in which a fluid flow at the arrival end of the shed stretches the weft thread during the stop movement of the reed, by means of a fluid flow acting on the weft thread at the end of the shed, and with a weft thread retraction device which Weft after the weft insertion is completed, during the initial phase of the stop movement of the reed, on the side of the weft spool retracts by the amount of the excess length, which excess length serves as excess length for the next weft thread to be inserted, and with a cutting device for cutting the weft thread.
  • the quality of a fabric depends to a large extent on the extent and the uniformity with which the weft threads are stretched after being inserted and kept stretched before and during the subsequent beating in the cloth.
  • this stretching effect is produced by a stretching nozzle, which is arranged on the arrival side of the weft thread and usually outside the fabric edge, in addition to the relay nozzles which distribute the weft threads and are arranged over the shed. It goes without saying that a more effective and more uniform stretching action and thereby a better cloth is obtained if the weft thread is surrounded over a relatively large length by the stretching air flow from the stretching nozzle.
  • FR-A-2.153.185 describes a whip weaving process in which the weft threads are inserted with a constant excess length and then withdrawn by this excess length with a retraction device which consists of a lever and an equalizer. After pulling back with the retraction device, the weft thread is cut. The thread on the bobbin side is placed with the lever in a suction tube, in which the thread is stored cut to length for the subsequent whip shot. The thread end on the weft bobbin side is pivoted in a direction opposite to the weft insertion direction in order to be pivoted again in the weft insertion direction during the weft insertion. The retraction device releases the end of the thread on the weft bobbin immediately after cutting.
  • the thread is rotated and retracted using the suction tube, which acts as a second retraction device.
  • This process is slow and is not suitable for modern weaving processes, since the preparation for the weft thread of the subsequent weft can only be triggered after the previous weft insertion has been completed, and the weft insertion in turn only begins after cutting to length.
  • the invention has for its object to provide a loom of the type defined, in which the time required for weft insertion can be further reduced.
  • a weaving machine is characterized in that the end of the weft thread on the weft bobbin side after cutting with the cutting device by the weft thread retraction device alone, in the direction opposite to the thread path when the weft insertion is further retractable.
  • a drawer 1 can be rotated back and forth about an axis 2 in the direction of an arrow I.
  • the weft yarn 7 is from a (not shown) supply spool via a (also not shown) weft thread measuring device, for. B. a weft store, fed via a thread clamp 8 of the main nozzle 4.
  • the thread clamp 8 closes each time a weft thread entry is finished and only opens again at the moment when the next entry is to begin.
  • the thread length already stored in the thread store for the next entry is then released by opening the thread clamp 8 for entry through the main nozzle 4.
  • a thread length is stored which is equal to the weft thread length required by the weaving width plus a certain excess length.
  • the drawing nozzle 9 is only shown schematically and is not described, since it is known per se, for example from NL-PS 72 06 367.
  • a lever 11 is provided in the space 10 between the thread clamp 8 and the main nozzle 4, which lever can be rotated about an axis 12, which is supported in two cheeks 13, in a plane perpendicular to the entry line.
  • the cheeks 13 are attached to the head of the projecting part of the drawer 1.
  • the lever 11 moves between an ineffective position, which is determined by a stop 14, and an active position, which is determined by a stop 15.
  • a forearm 11 'of the two-armed lever 11 is provided with a roller 16 which can roll on a guide rail 17 on a lever 18.
  • the lever 18 is fastened on an axis 19 which runs parallel to the entry line and is rotatably mounted in a bushing 20.
  • the bushing 20 in turn is fastened to a stationary part 22 of the weaving machine via a carrier 21.
  • a lever 23 with follower roller 24 is also fastened, which is guided on a control disk 25 rotating in the direction of an arrow 11.
  • the follower roller 24 is held on the control disk 25 by means of a compression spring 26 which presses on a protruding part 23 'of the lever 23.
  • the control disk 25 has two control sections 25a and 25b with different radii, which are connected to one another by straight transition sections. In the position shown in FIG.
  • This loop 28 is during the stop movement of the reed preceding the position B shown 3, during which movement the lever 11 was rotated from its ineffective, no loop position at the stop 14 to its effective, loop position at the stop 15.
  • the thread length contained in the loop 28 is intended for this during the next entry of a Weft to be used.
  • the operation of the device is described below using a weaving cycle, the starting point being the reed stop position A shown in the drawing.
  • the most important processes in the weaving cycle relate to the angular position of the main shaft of the weaving machine, which makes one full revolution per weaving cycle.
  • the drawn Rietanschlaglage A corresponds to the 0 ° angle position.
  • the pulling action of the main nozzle 4 on the weft thread releases the loop 28 released by the lever 11 on its way to the stop 14 and promotes it in the direction of the shed.
  • the weft thread is thus inserted approximately between the angular positions 90 ° and 100 ° of the main shaft. With an angular position of approximately 180 °, the drawer 1 has reached its rest position. The reed 3 is then in position B. The main nozzle 4 is then still effective; it is only switched off when the angle is 230 °. In the meantime, the stretching nozzle 9 is already in effect at approximately 200 ° kicked so that it can pick up the weft end 7 "at the end of the entry and start stretching.
  • the stretching nozzle contains a weft thread length equal to the length of the loop 28.

Landscapes

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

Claims (4)

1. Métier à tisser à insertion avec surlongueur, par fluide, des fils de trame (7, 7', 7") dans la foule de tissage, dans lequel, à l'extrémité arrivée de la foule, un flux de fluide étire le fil de trame (7, 7', 7") lors du mouvement de bourrage du ros (3), au moyen d'un flux de fluide agissant sur le fil de trame à l'extrémité de la foule, le métier présentant un dispositif (11, 11') de rétraction du fil de trame qui, à l'achèvement de l'insertion de la trame et en phase initiale du mouvement de bourrage du ros (3), rétracte le fil de trame (7, 7', 7"), côté canette, de la valeur de la surlongueur (7"), laquelle surlongueur sert de surlongueur au fil de trame (7, 7', 7") devant être consécutivement inséré, ainsi qu'un dispositif de sectionnement (29) pour sectionner le fil de trame (7, 7', 7"), caractérisé par le fait que, après le sectionnement opéré par le dispositif de sectionnement (29), l'extrémité (7') du fil de trame située côté canette peut être rétractée davantage encore, avec le seul concours du dispositif (10, 11, 11", 12, 13) de rétraction du fil de trame, dans la direction opposée à la trajectoire du fil lors de l'insertion de la trame.
2. Métier à tisser selon la revendication 1, comprenant un dispositif doseur de fil de trame, un ros (3), une buse principale (4) d'insertion du fil de trame, un dispositif (29) de sectionnement du fil de trame, intercalé entre cette buse principale et la foule, ainsi qu'une buse (9) étireuse du fil de trame du côté arrivée du fil de trame dans la foule, caractérisé par le fait que le dispositif (10, 11, 11", 12, 13) de rétraction du fil de trame est interposé entre le dispositif doseur et la buse principale (4).
3. Métier à tisser selon la revendication 2, dans lequel la buse principale (4) se trouve sur le battant (1) portant le ros (3), caractérisé par le fait que le dispositif de rétraction (10, 11, 11", 12, 13) est également installé sur le battant (1) et présente un levier (11) qui peut tourner dans un plan transversalement par rapport à la ligne d'insertion et qui, lors du mouvement du battant (1) dans la direction du bourrage, accomplit dans la direction du bourrage un mouvement se superposant à ce mouvement, en croisant et en déviant alors le fil de trame (7').
EP85100491A 1984-01-19 1985-01-18 Procédé de fonctionnement d'un métier à tisser et dispositif pour exécuter ce procédé Expired EP0150057B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH235/84 1984-01-19
CH235/84A CH662136A5 (de) 1984-01-19 1984-01-19 Verfahren zum betrieb einer webmaschine und vorrichtung zum durchfuehren des verfahrens.

Publications (3)

Publication Number Publication Date
EP0150057A2 EP0150057A2 (fr) 1985-07-31
EP0150057A3 EP0150057A3 (en) 1985-08-21
EP0150057B1 true EP0150057B1 (fr) 1988-12-21

Family

ID=4182368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100491A Expired EP0150057B1 (fr) 1984-01-19 1985-01-18 Procédé de fonctionnement d'un métier à tisser et dispositif pour exécuter ce procédé

Country Status (4)

Country Link
US (1) US4601314A (fr)
EP (1) EP0150057B1 (fr)
CH (1) CH662136A5 (fr)
DE (2) DE3402393A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3704277A1 (de) * 1986-11-20 1988-06-01 Kloecker Entwicklungs Gmbh Verfahren zur erzielung eines geringen schussfadenabfalls
DE3721116A1 (de) * 1987-03-12 1988-09-29 Kloecker Entwicklungs Gmbh Verfahren zum spannen eines bei schuetzenlosen webmaschinen eingetragenen schussfadens an der schussfadeneintrittsseite
EP0297040B1 (fr) * 1987-06-25 1991-06-26 GebràœDer Sulzer Aktiengesellschaft Procédé pour l'insertion de trame dans un métier pneumatique multicouleurs et métier pour l'exécution de ce procédé
JP2912665B2 (ja) * 1990-03-05 1999-06-28 津田駒工業株式会社 ジェットルームの１ピック緯入れ方法と、その制御装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2153185A1 (en) * 1971-09-22 1973-05-04 Moessinger Sa Shuttleless weaving compensator - draws excess weft back into reserve

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE459397C (de) * 1929-09-09 Johann Gabler Vorrichtung zum Regeln der Laenge des mittels Greifers eingetragenen Schussfadens fuer Webstuehle mit feststehenden Schussspulen
BE467199A (fr) * 1945-08-11
FR1260351A (fr) * 1960-06-16 1961-05-05 Sulzer Ag Dispositif de tension de la matière de trame à insérer dans la foule
GB1058607A (en) * 1963-05-30 1967-02-15 Jose Llado Llado Improvements in weft clamping and positioning devices for shuttleless looms
CH449543A (fr) * 1964-12-22 1967-12-31 Moessinger Albert Procédé de tissage
CH474589A (fr) * 1965-02-15 1969-06-30 Moessinger Albert Procédé de tissage et métier pour sa mise en oeuvre
CH502459A (de) * 1969-07-22 1971-01-31 Rueti Ag Maschf Einrichtung zur Beeinflussung eines Fadens
US3938561A (en) * 1971-04-10 1976-02-17 Walter Scheffel Device for drawing off weft thread
US3698442A (en) * 1971-06-18 1972-10-17 Enshu Seisaku Kk Weft controller usable for a weaving loom of weft propellent fluid jet type
FR2198014A2 (en) * 1972-09-04 1974-03-29 Moessinger Sa Shuttleless weaving compensator - draws excess weft back into reserve
US4054159A (en) * 1973-10-04 1977-10-18 Societe Alsacienne De Constructions Mecaniques De Mulhouse Picking method for a shuttleless weaving machine
CH593851A5 (fr) * 1975-07-04 1977-12-15 Sulzer Ag
US4473096A (en) * 1979-08-06 1984-09-25 Leesona Corporation Weft end reception system
JPS5926554A (ja) * 1982-08-04 1984-02-10 日産自動車株式会社 流体噴射式織機における緯糸引戻し装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2153185A1 (en) * 1971-09-22 1973-05-04 Moessinger Sa Shuttleless weaving compensator - draws excess weft back into reserve

Also Published As

Publication number Publication date
EP0150057A3 (en) 1985-08-21
EP0150057A2 (fr) 1985-07-31
DE3566912D1 (en) 1989-01-26
DE3402393A1 (de) 1985-07-25
US4601314A (en) 1986-07-22
CH662136A5 (de) 1987-09-15
DE3402393C2 (fr) 1988-02-11

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