EP0633336A1 - Procédé pour l'insertion simultanée de deux fils de trame et métier à tisser équipé d'un dispositif pour la mise en oeuvre du procédé - Google Patents

Procédé pour l'insertion simultanée de deux fils de trame et métier à tisser équipé d'un dispositif pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0633336A1
EP0633336A1 EP93810480A EP93810480A EP0633336A1 EP 0633336 A1 EP0633336 A1 EP 0633336A1 EP 93810480 A EP93810480 A EP 93810480A EP 93810480 A EP93810480 A EP 93810480A EP 0633336 A1 EP0633336 A1 EP 0633336A1
Authority
EP
European Patent Office
Prior art keywords
weft
weft thread
gripper
thread
threads
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.)
Withdrawn
Application number
EP93810480A
Other languages
German (de)
English (en)
Inventor
Egloff Anton
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
Maschinenfabrik Rueti AG
Original Assignee
Sultex AG
Maschinenfabrik 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 Sultex AG, Maschinenfabrik Rueti AG filed Critical Sultex AG
Priority to EP93810480A priority Critical patent/EP0633336A1/fr
Publication of EP0633336A1 publication Critical patent/EP0633336A1/fr
Withdrawn legal-status Critical Current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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers
    • D03D47/233—Carrying grippers
    • 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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick

Definitions

  • the invention relates to a method for the simultaneous insertion of two weft threads according to the preamble of claim 1 and an arrangement for performing the method and a weaving machine with such an arrangement.
  • JP-A-209852 discloses a method for the simultaneous insertion of two weft threads, in which two weft threads are picked up and clamped in a wedge-shaped thread clamp of a bringer gripper in a predetermined sequence. When it is taken over by a slave gripper, the weft threads are picked up in the same order and completely entered into a shed. In this process, the two weft threads are presented simultaneously by weft thread feeders.
  • This method has the disadvantage that the weft threads are not guided by the rapier gripper nor by the slave gripper during insertion. This causes a so-called rollover of the weft threads, ie the sequence of the weft threads is not clearly defined.
  • the invention seeks to remedy this.
  • the invention as characterized in claim 1 solves the problem of creating a method for the simultaneous insertion of two weft threads, in which the sequence of the weft threads in the fabric is exactly the same as the sequence of the inserted weft threads.
  • weft threads are prevented from rolling over according to the invention.
  • the method according to the invention in addition to a conventional double-shot entry, it is also possible to carry out a double-shot entry which guarantees a parallel shot position.
  • weft threads with the same or different thickness and with the same or different colors can be inserted and a uniform product appearance can be achieved in an advantageous manner.
  • the method is advantageously completely independent of which thread e.g. with thread of different thickness is presented or threaded because the weft threads are presented to the gripper in a predetermined position.
  • An arrangement for performing the method is characterized by the features of claim 12.
  • This arrangement has the advantages that, in addition to its simple structure, in particular universal application is possible, ie, as mentioned above, parallel shots are also entered in addition to the double shot. Since the recesses form first deflection points and the thread clamp is connected downstream of the deflection points, the thread clamp can be arranged inside or outside a lower part of the carrier gripper.
  • a rapier weaving machine with an arrangement for the simultaneous insertion of two weft threads is characterized according to the invention by the features of claim 17.
  • a bringer gripper 1 and a slave gripper 2 interacting therewith are used to insert two weft threads 3, 4, which have a different thickness.
  • FIGS. 1 and 2 show a preferred embodiment of a rapier gripper 1.
  • This rapier gripper 1 contains a rapier body 5 and a thread clamp 6 and is fastened to a rapier belt or rapier bar (not shown).
  • the rapier body 5 consists of a lower part 7 with U-shaped cross-sectional shapes and a plate 8. The lower part is arranged with the open side down in a rapier weaving machine (not shown).
  • the thread clamp 6 is attached to the outside of the lower part 7. It is pointed out that the thread clamp 6 can be arranged at a suitable location within the lower part 7.
  • the lower part 7 forms a ceiling 9 and two side walls 10, 11, the thread clamp 6 being fastened to the one side wall 11.
  • a flap 12 is provided on this side wall 11 and protrudes inwards parallel to the ceiling 9. This tab 12 forms a deflection section, as will be described later.
  • the plate 8 is arranged at a distance from the ceiling 11 and is connected on one side to the lower part 7, so that a space 13 open on one side is formed.
  • the plate 8 has a curved section on the free side which projects beyond the ceiling 9 and forms an inlet gap 13a which is open at the bottom for a weft thread.
  • An elongated hole 14 is formed in the plate 8 and extends in the longitudinal direction of the gripper body 5.
  • a cutout 15 is shown which is drawn with broken lines and which, starting from the front of the carrier gripper 1, narrows towards the rear toward the base of the cutout.
  • the elongated hole 14 and the cutout 15 are arranged such that the elongated hole end and the cutout base lie staggered on a line 16, the cutout bottom being set back with respect to the elongated hole end.
  • a self-contained recess with an essentially triangular contour which is wide towards the front of the gripper body 5 and narrow towards the rear, can advantageously be provided in the plate 8.
  • the recess 14 and the cutout 15 have a similar contour, the same as in the embodiment described above, the end of the recess and the cutout base are staggered on the line 16.
  • FIGS. 3 to 8 An exemplary embodiment of the method according to the invention is described below with reference to FIGS. 3 to 8, in which two weft threads with different thicknesses are inserted into a shed at the same time.
  • the rapier gripper 1 is moved from a rapier drive (not shown) into a shed 21, i.e. 3 to the left in Fig.
  • the thick weft thread 3 runs from a weft supply (not shown) through a thread monitor 22, through the elongated hole 14 and a known thread guide arrangement (not shown) to the thick weft thread that was last inserted and struck.
  • the thin weft thread 4 runs from a weft thread supply, not shown, through a thread monitor 22 and weft thread dispenser 24 and Thread steering arrangement for the last entered and struck weft.
  • the thick weft thread 3 is always threaded into the rapier gripper 1, while in this position the thin weft thread 4 runs outside the rapier gripper 1.
  • FIG. 3 shows, the thin weft thread 4 is inserted from the looper grain 25 into the cavity 13 between the lower part 7 and plate 8 on the looper body 5 and further into the cutout 14 during the movement of the bring gripper 1 (FIGS. 1 and 2).
  • the weft threads 3, 4 are next captured by the deflecting section 12 (FIG. 2) and inserted and clamped into the thread clamp 6 to form a loop.
  • the thick weft thread 3 already lies against the edge of the cutout 15, while the thin weft thread 4 is still exposed in the elongated hole 14 (FIG. 5).
  • the weft threads 3, 4 are cut and the clamped weft threads are inserted into the shed 21 as new weft threads (FIG. 4).
  • the thin weft thread 4 is brought into contact with the edge at the end of section 15.
  • the weft threads 3, 4 have assumed a predetermined position relative to one another. As can be seen from FIG. 7, this position is predetermined by deflecting the loop-shaped inserted weft threads 3 and 4.
  • the threaded thick weft thread 3 is deflected at the end edge of the elongated hole 14, which forms a first deflection point 31, and at the deflection section 11, which forms a second deflection point 32 for the thick weft thread 3.
  • the thin weft thread 4 is deflected at the edge of the cutout 15, which forms a first deflection point 33 and at the deflection section 12, the one forms second deflection point 34 for the thin weft thread 4.
  • the distance X 1 of the first deflection points 31, 33 is defined, while the distance X 2 of the second deflection points 32, 34 is determined by the thread clamp (not shown) depending on the thickness differences of the weft threads. It follows from this arrangement that the thick weft thread 3 is arranged in front of the thin weft thread 4 in the predetermined position in relation to the running direction "A" of the carrier gripper 1. This advantageously ensures that the weft grippers 3 take over the weft threads 3, 4 in the order of thin and thick weft threads.
  • the thick weft thread 3 is guided approximately parallel to the edge of the goods after the takeover by the slave gripper 2 by the carrier gripper 1, while the thin weft thread 4 is guided in the intermediate space 13 (FIG. 2).
  • the weft thread generator (not shown) ensures that the running direction of the weft thread 4 differs from that of the weft thread 3. This advantageously prevents the weft threads 3, 4 from rolling over when they are inserted into the shed (not shown).
  • the weft threads 3, 4 are wound in the order of thin - thick weft threads. This results in a perfect parallel shot position.
  • FIGS. 9 and 10 show another embodiment of a bringer gripper according to the invention, which has a gripper body 41 and a wedge-shaped thread clamp 42.
  • the rapier body 41 has a U-shaped cross-sectional shape and is arranged with the open side down in a rapier weaving machine.
  • the gripper body 41 has an analogous manner to that in the preferred embodiment an elongated hole 44 and a cutout 45 open to the front of the carrier gripper.
  • the elongated hole 44 on the side of the gripper horn 46 is formed such that a section with one end lies parallel to the cutout edge and a section with the other behind the cutout base.
  • the weft insertion is carried out with a weft thread that is always threaded and in each case presented, the weft threads being guided along separate raceways in order to prevent the threads from rolling over.
  • an arrangement has a rapier gripper (1) which contains two recesses (14, 15) which are intended to take over the weft threads (3, 4) spatially separated from the latter by the slave rapier (2) in the middle of the weaving machine and to continue.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP93810480A 1993-07-06 1993-07-06 Procédé pour l'insertion simultanée de deux fils de trame et métier à tisser équipé d'un dispositif pour la mise en oeuvre du procédé Withdrawn EP0633336A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93810480A EP0633336A1 (fr) 1993-07-06 1993-07-06 Procédé pour l'insertion simultanée de deux fils de trame et métier à tisser équipé d'un dispositif pour la mise en oeuvre du procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93810480A EP0633336A1 (fr) 1993-07-06 1993-07-06 Procédé pour l'insertion simultanée de deux fils de trame et métier à tisser équipé d'un dispositif pour la mise en oeuvre du procédé

Publications (1)

Publication Number Publication Date
EP0633336A1 true EP0633336A1 (fr) 1995-01-11

Family

ID=8214997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93810480A Withdrawn EP0633336A1 (fr) 1993-07-06 1993-07-06 Procédé pour l'insertion simultanée de deux fils de trame et métier à tisser équipé d'un dispositif pour la mise en oeuvre du procédé

Country Status (1)

Country Link
EP (1) EP0633336A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000029651A2 (fr) * 1998-11-17 2000-05-25 Sulzer Tessile S.R.L. Ensemble passe-fil pour metiers a tisser sans navette approprie, notamment, a l'introduction simultanee de plusieurs trames dans une entree de chaine
WO2009135636A1 (fr) 2008-05-07 2009-11-12 Picanol N.V. Pince de réception, pince d'amenée et dispositif pour machine à tisser à lances
WO2010142264A1 (fr) * 2009-06-10 2010-12-16 Lindauer Dornier Gesellschaft Mbh Dispositif et procédé d'insertion des fils de trame dans une machine à tisser à pinces
CN109322045A (zh) * 2018-11-09 2019-02-12 江苏理工学院 一种剑杆织机的送纬装置及引纬装置
CN110760979A (zh) * 2019-12-02 2020-02-07 朱惠忠 一种用于纬纱束编织的剑杆织机及其操作方法
WO2020126546A1 (fr) * 2018-12-21 2020-06-25 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Tête de pince donneuse, métier à tisser comprenant une telle tête de pince donneuse et procédé d'insertion de double trame

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1574626A (fr) * 1967-08-12 1969-07-11
EP0272206A2 (fr) * 1986-11-19 1988-06-22 GebràœDer Sulzer Aktiengesellschaft Organe d'insertion du fil de trame pour métier à tisser à griffes
EP0477138A1 (fr) * 1990-09-05 1992-03-25 GIVIDI, DI DIEGO ARMANDO SCARI S.a.p.a Métier à tisser à griffes
JPH04209852A (ja) * 1990-11-30 1992-07-31 Kanebo Ltd 緯糸の２本同時挿入方法およびそれに用いる溝付きインサートレピアならびに溝付きキヤリアレピア

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1574626A (fr) * 1967-08-12 1969-07-11
EP0272206A2 (fr) * 1986-11-19 1988-06-22 GebràœDer Sulzer Aktiengesellschaft Organe d'insertion du fil de trame pour métier à tisser à griffes
EP0477138A1 (fr) * 1990-09-05 1992-03-25 GIVIDI, DI DIEGO ARMANDO SCARI S.a.p.a Métier à tisser à griffes
JPH04209852A (ja) * 1990-11-30 1992-07-31 Kanebo Ltd 緯糸の２本同時挿入方法およびそれに用いる溝付きインサートレピアならびに溝付きキヤリアレピア

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000029651A2 (fr) * 1998-11-17 2000-05-25 Sulzer Tessile S.R.L. Ensemble passe-fil pour metiers a tisser sans navette approprie, notamment, a l'introduction simultanee de plusieurs trames dans une entree de chaine
WO2000029651A3 (fr) * 1998-11-17 2000-08-17 Sulzer Tessile S R L Ensemble passe-fil pour metiers a tisser sans navette approprie, notamment, a l'introduction simultanee de plusieurs trames dans une entree de chaine
WO2009135636A1 (fr) 2008-05-07 2009-11-12 Picanol N.V. Pince de réception, pince d'amenée et dispositif pour machine à tisser à lances
EP2594671A1 (fr) 2008-05-07 2013-05-22 Picanol Dispositif de présentation de fils de trame à une pince d'un métier à tisser à pince, machine à tisser à pinces et procédé pour la présentation de deux fils de trame
WO2010142264A1 (fr) * 2009-06-10 2010-12-16 Lindauer Dornier Gesellschaft Mbh Dispositif et procédé d'insertion des fils de trame dans une machine à tisser à pinces
CN109322045A (zh) * 2018-11-09 2019-02-12 江苏理工学院 一种剑杆织机的送纬装置及引纬装置
CN109322045B (zh) * 2018-11-09 2024-02-23 江苏理工学院 一种剑杆织机的送纬装置及引纬装置
WO2020126546A1 (fr) * 2018-12-21 2020-06-25 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Tête de pince donneuse, métier à tisser comprenant une telle tête de pince donneuse et procédé d'insertion de double trame
CN113195811A (zh) * 2018-12-21 2021-07-30 林道尔·多尼尔有限责任公司 投送器-夹持器头、带有这样的投送器-夹持器头的织机和用于双投纬的方法
CN113195811B (zh) * 2018-12-21 2023-02-17 林道尔·多尼尔有限责任公司 投送器-夹持器头、带有这样的投送器-夹持器头的织机和用于双投纬的方法
CN110760979A (zh) * 2019-12-02 2020-02-07 朱惠忠 一种用于纬纱束编织的剑杆织机及其操作方法

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