EP1099784B1 - Métier à tisser avec système d'insertion pour une pluralité de fils de trame en règle générale différents - Google Patents

Métier à tisser avec système d'insertion pour une pluralité de fils de trame en règle générale différents Download PDF

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Publication number
EP1099784B1
EP1099784B1 EP20000810756 EP00810756A EP1099784B1 EP 1099784 B1 EP1099784 B1 EP 1099784B1 EP 20000810756 EP20000810756 EP 20000810756 EP 00810756 A EP00810756 A EP 00810756A EP 1099784 B1 EP1099784 B1 EP 1099784B1
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EP
European Patent Office
Prior art keywords
thread
weft
brake
weaving machine
accordance
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
EP20000810756
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German (de)
English (en)
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EP1099784A1 (fr
Inventor
Karl Meier
Dietmar Markward
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.)
Itema Switzerland Ltd
Original Assignee
Itema Switzerland Ltd
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Filing date
Publication date
Application filed by Itema Switzerland Ltd filed Critical Itema Switzerland Ltd
Priority to EP20000810756 priority Critical patent/EP1099784B1/fr
Publication of EP1099784A1 publication Critical patent/EP1099784A1/fr
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Publication of EP1099784B1 publication Critical patent/EP1099784B1/fr
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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
    • 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
    • D03D47/38—Weft pattern mechanisms

Definitions

  • the invention relates to a weaving machine with a registration system for a plurality of generally different weft threads according to the preamble of claim 1 (US Pat. EP-A-0 461 524 ).
  • systems which, for each weft thread, have at least one thread supply, a thread store with brake integrated on the take-off side, e.g. in the form of a brush ring, a thread monitor, a thread brake, and a thread rug as part of a color selector and a gripper include.
  • the weft threads extend from the thread supply via the thread store, the thread monitor, the thread brake and the thread rug either into the fabric in which the weft thread is incorporated or into a thread clamp in which the weft thread is held. To enter a weft thread this is displaced by the thread rug into the raceway of the gripper and received by the gripper.
  • the wrapped weft thread is cut off and entered into the open shed.
  • the clamped weft thread is entered and struck and cut off after the nip.
  • a disadvantage of this registration system proves that for each weft yarn thread monitor and at least one yarn brake is provided, in which the retracted weft thread always remains. As a result of the abrasion, the thread brake becomes dirty, so that the thread brake has to be cleaned periodically in order to avoid yarn breaks.
  • the invention has for its object to provide a loom with a simplified and reliable registration system.
  • the weft threads extend from the thread supply via the thread store and the thread rollover of the color selector in the tissue.
  • the color selector sets by means of a thread rug in each case a weft before the gripper, which takes over the weft and enters into the open shed. It is merely a thread brake provided to brake the respectively presented weft. Because each weft thread is pulled into the thread brake, the thread brake cleans itself.
  • FIGS. 1 . 4 and 5 The embodiments of the FIGS. 1 . 4 and 5 However, which do not fall within the scope of the claims, facilitate the understanding of the claimed invention.
  • the figures show an embodiment of a registration system with, for example, four weft threads are entered with eg different color or thickness and / or structure.
  • the registration system contains for each weft thread 1 a supply reel 2, a yarn store 3 integrated on the yarn withdrawal side brake eg in the form of a brush ring and a color picker 4 with four thread rugs 5 and for all four weft threads together guide members 6 to calm the submitted weft thread, in the area of action the thread ripper 5 are arranged as well as a yarn brake 7, a sensor 8, with which the yarn tension measured and monitored weft thread is monitored and a thread monitor 9 for detecting an unintentional double shot, which are arranged downstream of the color picker 4 in the direction of the thread and a gripper 10th
  • the supply reels 2, the yarn stores 3 and the color picker 4 are arranged in a known manner on the weaving machine.
  • the guide members 6, the thread brake 7, the sensor 8 and the thread monitor 9 are arranged on a guide part 11 for the gripper.
  • the guide members 6 are formed as pins.
  • the thread rugs 5, the thread brake 7, the sensor 8 and the thread monitor 9 are signal-transmitting connected to a control device (not shown) of the loom to control the entry.
  • the weft threads 1 are in a holding position ( Fig.1 ), which extend from the yarn store 3 on the thread rug 4 in the fabric 11A and are held outside the career of the gripper.
  • the corresponding thread rug 4 will shift the weft thread to be inserted into the shed from the holding position into a transfer position.
  • the weft thread 1 crosses the raceway of the gripper.
  • the weft thread is applied to the guide members 6 to calm the weft.
  • the gripper with its thread clamp 15 picks up the weft thread presented.
  • the weft thread tied in the fabric is introduced into the nip of the thread clamp, so that the weft thread is held in the thread clamp ( Fig.2 ).
  • the thread monitor 9 scanned the weft and on the other hand, the weft thread pulled into the brake gap of the yarn brake 7. Subsequently, the weft thread is cut in the region of the fabric edge by means of a cutting device.
  • the weft yarn is brought into contact with the sensor 8 to measure the course of the yarn tension during the entry of the weft yarn and optionally in the same or a subsequent entry cycle as needed to change and monitor the weft thread, for example, to determine a yarn break and a weaving machine stop signal leave.
  • a second yarn brake 21 is provided in order, for example, to increase the braking effect and / or to distribute the braking force over a longer yarn section.
  • This yarn brake is provided with guide bracket 22 to introduce the weft yarn to be presented safely in the yarn brake 21.
  • the Figure 4 shows a third embodiment of a registration system. This version is different from Fig. 1 and 2 in that the yarn brake 7 is arranged on the batten.
  • the advantage of this solution is that the effect of the thread brake is maintained until the time of leaf strike.
  • the Figure 5 shows an embodiment with a wrap friction brake.
  • This yarn brake 25 is formed from two brake pins 26 and the respective thread rug 5, which presents a selected weft.
  • This version represents the simplest solution, with which in addition to the template function and the braking function is executable. In this case, the size of the loop and thus the braking effect on the amount of draft of the thread roving in relation to the brake pins controllable.
  • the Figure 6 shows a modified version of the yarn brake after Figure 5 ,
  • the yarn brake 27 includes two fixed bracket 28, which are mounted at a distance from each other on the guide member 11 for the gripper and a linearly movable bracket 29 which is connected to a servomotor 30 and relative to the fixed brackets 28 is adjustable. It goes without saying that several fixed as well as movable bracket can be provided with, for example, the distribution of a reduced stroke.
  • the weaving machine includes a registration system for a plurality of generally different weft threads, which comprises a thread supply 2, a yarn store 3 and a color picker 4 for selectively presenting the weft threads and a gripper 10 for entering the weft thread presented for each weft.
  • a registration system for a plurality of generally different weft threads which comprises a thread supply 2, a yarn store 3 and a color picker 4 for selectively presenting the weft threads and a gripper 10 for entering the weft thread presented for each weft.
  • At least one thread brake 7 common to all the weft threads is provided in order to brake the respective weft thread 1 as required during registration.

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

Claims (10)

  1. Métier à tisser avec un système d'insertion pour une pluralité de fils de trame différents, qui contient pour chaque fil de trame (1) une réserve de fil (2), un fournisseur de fil (3) et un sélecteur de couleur (4) pour la présentation sélective des fils de trame ainsi qu'une griffe (10) pour l'insertion du fil de trame présenté, caractérisé par un premier frein de fil (7; 25;27) commun à tous les fils de trame (1) pour freiner le fil de trame respectivement présenté pendant l'insertion, et un deuxième frein de fil (21) pour atteindre un effet de freinage plus élevé et/ou pour répartir la force de freinage sur une section de fil plus longue.
  2. Métier à tisser selon l'une des revendications précédentes, caractérisé en ce que le premier frein de fil (7; 25; 27) est disposé à une partie de guidage (11) prévue pour la griffe (10).
  3. Métier à tisser selon l'une des revendications précédentes, caractérisé en ce que le premier frein de fil est disposé entre le fournisseur de fil et le sélecteur de couleur.
  4. Métier à tisser selon l'une des revendications précédentes, caractérisé en ce que le premier frein de fil (7) est disposé au peigne (24).
  5. Métier à tisser selon l'une des revendications précédentes, caractérisé par des organes de guidage (6) pour le fil de trame présenté.
  6. Métier à tisser selon l'une des revendications précédentes, caractérisé par des étriers de guidage (22) pour le frein de fil, pour guider le fil de trame présenté.
  7. Métier à tisser selon l'une des revendications précédentes, caractérisé par un capteur (8) pour la surveillance et/ou pour la mesure de la force de traction du fil de trame à insérer, qui est disposé à une partie stationnaire du métier à tisser.
  8. Métier à tisser selon la revendication 7, où le capteur (8) pour la surveillance et/ou pour la mesure de la force de traction du fil de trame à insérer est disposé à une partie de guidage (22) prévue pour la griffe (10).
  9. Métier à tisser selon l'une des revendications précédentes, caractérisé par un casse-fil supplémentaire (9) pour la constatation d'une duite double non-intentionnelle.
  10. Métier à tisser selon la revendication 1, caractérisé en ce que le premier frein de fil est un frein d'enlacement qui est formé par deux organes de freinage fixes (26) et l'organe de présentation de fil (5) présentant respectivement un fil de trame, où l'effet de freinage peut être déterminé par la grandeur du mouvement de l'organe de présentation de fil.
EP20000810756 1999-09-23 2000-08-24 Métier à tisser avec système d'insertion pour une pluralité de fils de trame en règle générale différents Expired - Lifetime EP1099784B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20000810756 EP1099784B1 (fr) 1999-09-23 2000-08-24 Métier à tisser avec système d'insertion pour une pluralité de fils de trame en règle générale différents

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99810853 1999-09-23
EP99810853 1999-09-23
EP20000810756 EP1099784B1 (fr) 1999-09-23 2000-08-24 Métier à tisser avec système d'insertion pour une pluralité de fils de trame en règle générale différents

Publications (2)

Publication Number Publication Date
EP1099784A1 EP1099784A1 (fr) 2001-05-16
EP1099784B1 true EP1099784B1 (fr) 2009-11-11

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EP20000810756 Expired - Lifetime EP1099784B1 (fr) 1999-09-23 2000-08-24 Métier à tisser avec système d'insertion pour une pluralité de fils de trame en règle générale différents

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EP (1) EP1099784B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010047014A1 (de) * 2010-09-30 2012-04-05 Lindauer Dornier Gmbh Ermittlung der Fadenzugkräfte in mehreren Schussfäden einer Webmaschine
CN112410981B (zh) * 2020-10-29 2022-05-13 鲁泰纺织股份有限公司 突破剑杆织机单次引纬数量限制的系统及方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524727A1 (de) * 1985-07-11 1987-01-22 Dornier Gmbh Lindauer Verfahren zum schussfadeneintrag bei schuetzenlosen webmaschinen durch ins webfach vorgeschobene und wieder zurueckgezogene, mit klemmvorrichtungen fuer den schussfaden ausgeruestete greifer
IT1227077B (it) * 1988-09-08 1991-03-14 Vamatex Spa Sistema per controllare la tensione della trama alimentata ad un telaio tessile senza navette.
IT1248715B (it) 1990-06-11 1995-01-26 Vamatex Spa Dispositivo di presentazione della trama per telai di tessitura a pinze
DE19611320C2 (de) * 1996-03-22 1999-05-20 Dornier Gmbh Lindauer Verfahren und Vorrichtung zum pneumatischen Unterstützen des Eintragens und Spannens eines Schußfadens in Webmaschinen
DE59604371D1 (de) * 1996-07-03 2000-03-09 Sulzer Textil Ag Rueti Vorrichtung an einer Greiferwebmaschine zum Erkennen eines fehlerhaften Schussfadeneintrages

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