EP0477139A1 - Organe d'insertion du fil de trame pour métier à tisser à griffes - Google Patents

Organe d'insertion du fil de trame pour métier à tisser à griffes Download PDF

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Publication number
EP0477139A1
EP0477139A1 EP91810716A EP91810716A EP0477139A1 EP 0477139 A1 EP0477139 A1 EP 0477139A1 EP 91810716 A EP91810716 A EP 91810716A EP 91810716 A EP91810716 A EP 91810716A EP 0477139 A1 EP0477139 A1 EP 0477139A1
Authority
EP
European Patent Office
Prior art keywords
bringer
thread
side wall
clamping
arrangement 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.)
Granted
Application number
EP91810716A
Other languages
German (de)
English (en)
Other versions
EP0477139B1 (fr
Inventor
Anton Egloff
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.)
Gividi Di Diego Armando Scari Sapa
Original Assignee
Gividi Di Diego Armando Scari Sapa
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 Gividi Di Diego Armando Scari Sapa filed Critical Gividi Di Diego Armando Scari Sapa
Publication of EP0477139A1 publication Critical patent/EP0477139A1/fr
Application granted granted Critical
Publication of EP0477139B1 publication Critical patent/EP0477139B1/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
    • D03D47/12—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

Definitions

  • the present invention relates to an arrangement of a bringer gripper on a rapier weaving machine, which bringer comprises a cover plate and two side walls.
  • EP-A-0 272 206 This shows a type of thread clamping known today with a clamping edge 21 and a clamping tongue 4 or a clamping surface 22 and a clamping element 7. These parts serve to hold the weft thread. As can be seen from the patent application, these clamps are located in the bottom surface of the carrier gripper.
  • the invention is characterized in that a thread clamp for the weft thread to be inserted into the shed is provided on the outside of the side wall of the bringer facing the shed tip.
  • FIGS. 1, 2 and 3 has two side walls 12 and 13 and a cover plate 14. The latter is provided with an opening 15. The bringer 11 is detachable on a bringer holder 16 and fastened to a drive belt 17 by means of this.
  • FIG. 2 also shows a shed formed by warp threads 18, a fabric 19 and a loading bar 20.
  • a thread clamp 21 is provided on the outside of the side wall 12 of the applier 11 facing the shed tip. This comprises a clamping rod 22, a layer of elastic material 23 and a flexible clamping band 24, which is located between the clamping rod 22 and the material 23 and is pressed by this against the rod 22.
  • a thread to be clamped enters the thread entry point 25 and passes between the clamping rod 22 and the clamping band 24, where it is held as a result of the pressure exerted by the material 23.
  • This pressure can be set by several suitable measures. Two of them are briefly mentioned here, for example.
  • the clamping rod 22 forms a fixed unit together with a holder 26. In the example shown (FIGS. 1 and 2), this is fastened to the side wall 12 by means of screws. By turning the two outer screws in the opposite sense, i.e. by pivoting the rod 22 about a vertical axis, the contact pressure between the rod 22 and the clamping band 24 and thus the clamping force in the longitudinal direction can be set to different values at different points.
  • the distance of the rod 22 from the wall 12 can also be set as desired by a suitable choice of spacer plates 27 attached between the wall 12 and the holder 26.
  • the longitudinal slot 28 provided in the clamping bar 22 has the following advantages: It allows any contamination between the clamping bar 22 and the clamping band 24 to be seen with the naked eye. With a thin object can move back and forth in the slot 28 and the dirt can be removed in a simple manner by pressing against the clamping band 24, possibly with bubbles. The rods forming the slot 28 bring about a uniform contact pressure over the width of the "clamping band-elastic material" area.
  • the thread clamp 21 shown therefore has the following advantages:
  • the clamping region can be moved in the longitudinal direction. Above all, it extends over a certain length of the clamping band 24 or the clamping rod 22.
  • the clamping effect is distributed in the longitudinal extension of the rod 22 and also in the direction transverse to it.
  • the deflection of the thread is therefore not kink-like, but curved. This reduces the risk of the thread tearing. This is particularly advantageous for glass fibers.
  • the clamping area is approx. 10 mm long in the longitudinal direction, i.e. there is scope for cutting the weft thread to be inserted, since the tensile force acting on the thread only gradually approaches the limit of the tensile strength during clamping.
  • the arrangement according to the invention is also of particular advantage in its embodiment according to claim 6, because it allows the weft thread 31 to be inserted into the thread clamp 21 without there being any risk of damage to the weft thread 31, and for the following reason: In the known bringer grippers, the weft thread 31 must be passed between the threading tips when threading. It can be damaged by the tips. This is not the case with the arrangement shown in FIG. 2 (see also the same tags filed with this patent application parallel application No.CH02898 / 90-4).
  • the bringer 11 emerges from the shed immediately after the insertion of the weft thread 31, the weft thread 31 is struck by a reed (not shown) and the shed threads 18 are changed.
  • the weft thread 31, which is obtained from a thread supply not shown in FIG. 2, is moved by the reed length of the guide 34 up to the stop 35 of the thread lift 33.
  • the position of the stop 35 is higher than that of the free end of the clamping rod 22 and its tip. If the bringer 11 moves in again to the left to insert the next weft thread 31, the thread 31 (see FIG. 2) is located above the tip during the movement of the tip of the clamping rod 22 past the thread lifter 33. Damage to the thread by the tip of the rod 22 is therefore completely excluded.
  • FIG. 3 the hook section 29 of a slave gripper 37 which has penetrated into the bringer 11 for thread takeover was also drawn.
  • the guide plate 36 which can also be seen in FIG. 3 and is mentioned in claim 11, serves to hold the weft thread 31 in the position in which it is inserted into the bringer 11, in which the takeover by the hook 29 of the slave gripper 37 takes place in a reliable manner.
  • the guide plate 36 is slightly raised relative to the bottom surface of the bringer 11 in order to separate the lower warp threads 18 and the weft thread 31 to be inserted.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP19910810716 1990-09-05 1991-09-05 Organe d'insertion du fil de trame pour métier à tisser à griffes Expired - Lifetime EP0477139B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2899/90 1990-09-05
CH289990A CH682571A5 (de) 1990-09-05 1990-09-05 Bringergreifer an einer Greiferwebmaschine.

Publications (2)

Publication Number Publication Date
EP0477139A1 true EP0477139A1 (fr) 1992-03-25
EP0477139B1 EP0477139B1 (fr) 1996-04-24

Family

ID=4244122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910810716 Expired - Lifetime EP0477139B1 (fr) 1990-09-05 1991-09-05 Organe d'insertion du fil de trame pour métier à tisser à griffes

Country Status (3)

Country Link
EP (1) EP0477139B1 (fr)
CH (1) CH682571A5 (fr)
DE (1) DE59107713D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996002692A1 (fr) * 1994-07-19 1996-02-01 Gividi Italia S.P.A. Tissu en verre produit avec des fils sans torsion
EP1338688A1 (fr) * 2002-02-25 2003-08-27 GIVIDI-Italia S.p.A. Pince à fil pour une lance d'une machine à tisser à lances
US7482291B2 (en) 2005-03-18 2009-01-27 Saint-Gobain Technical Fabrics Canada, Ltd. Low profile reinforcing tape

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH502461A (de) * 1969-11-27 1971-01-31 Fischer Ag Brugg Georg Greiferpaar für den Schusseintrag in einer Webmaschine
EP0272206A2 (fr) * 1986-11-19 1988-06-22 GebràœDer Sulzer Aktiengesellschaft Organe d'insertion du fil de trame pour métier à tisser à griffes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH502461A (de) * 1969-11-27 1971-01-31 Fischer Ag Brugg Georg Greiferpaar für den Schusseintrag in einer Webmaschine
EP0272206A2 (fr) * 1986-11-19 1988-06-22 GebràœDer Sulzer Aktiengesellschaft Organe d'insertion du fil de trame pour métier à tisser à griffes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996002692A1 (fr) * 1994-07-19 1996-02-01 Gividi Italia S.P.A. Tissu en verre produit avec des fils sans torsion
EP1338688A1 (fr) * 2002-02-25 2003-08-27 GIVIDI-Italia S.p.A. Pince à fil pour une lance d'une machine à tisser à lances
US7482291B2 (en) 2005-03-18 2009-01-27 Saint-Gobain Technical Fabrics Canada, Ltd. Low profile reinforcing tape
US8828537B2 (en) 2005-03-18 2014-09-09 Saint-Gobain Adfors Canada, Ltd. Low profile reinforcing tape

Also Published As

Publication number Publication date
CH682571A5 (de) 1993-10-15
DE59107713D1 (de) 1996-05-30
EP0477139B1 (fr) 1996-04-24

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