EP0102588A2 - Courroie à flexibilité variable pour métiers à tisser à lances porte-trame - Google Patents

Courroie à flexibilité variable pour métiers à tisser à lances porte-trame Download PDF

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Publication number
EP0102588A2
EP0102588A2 EP83108331A EP83108331A EP0102588A2 EP 0102588 A2 EP0102588 A2 EP 0102588A2 EP 83108331 A EP83108331 A EP 83108331A EP 83108331 A EP83108331 A EP 83108331A EP 0102588 A2 EP0102588 A2 EP 0102588A2
Authority
EP
European Patent Office
Prior art keywords
strap
stiffness
length
looms
control
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
EP83108331A
Other languages
German (de)
English (en)
Other versions
EP0102588B1 (fr
EP0102588A3 (en
Inventor
Luigi Pezzoli
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.)
VILMINORE OFFICINE MECCANICHE SpA
Original Assignee
VILMINORE OFFICINE MECCANICHE SpA
OMV Officine Meccaniche Vilminore SpA
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 VILMINORE OFFICINE MECCANICHE SpA, OMV Officine Meccaniche Vilminore SpA filed Critical VILMINORE OFFICINE MECCANICHE SpA
Priority to AT83108331T priority Critical patent/ATE31330T1/de
Publication of EP0102588A2 publication Critical patent/EP0102588A2/fr
Publication of EP0102588A3 publication Critical patent/EP0102588A3/en
Application granted granted Critical
Publication of EP0102588B1 publication Critical patent/EP0102588B1/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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/271—Rapiers
    • D03D47/272—Rapier bands

Definitions

  • the problem is now being solved by the present invention, which is based on the principle that it is not necessary to strengthen the stiffness of the straps along the whole length thereof, but only in correspondence of those parts whereon they are subjected to particularly high compressive stresses which tend to lift them.
  • the strap parts which are instead subjected to lower compressive stresses, or even to tractive efforts - as the lengths which, with the straps totally inside the shed, are situated close to the ends of the shed itself - do not require any stiffening.
  • the present invention concerns a control strap for weft carrying grippers, characterized by the fact that it has a stiffness which varies along its length.
  • variable stiffness can be obtained by suitably varying the composition of the layers of different materials (generally plastic materials) which form the strap, and said variation can be continuous or by steps.
  • the strap 1 of figures 1 and 2 is formed of a core 2 of highly stiff plastic material, incorporated into an ordinary strap structure 3, also of plastic material, but of less stiffness.
  • the core 2 is delimited in the sense of the thickness by two step configurations (steps 4, 5 and 6) being formed of lengths or zones of decreasing thickness 7, 8, 9 and 10.
  • the stiffening core 2 is completely missing in correspondence of the strap area 11, where the strap - consisting of the mere structure 3 - appears as an ordinary type strap.
  • the core 12 incorporated into the structure 13 of the strap 1 has a thickness varying continuously between a maximum 14 and a minimum 15 and, also in this case, said core is missing in correspondence of the area 16, with the same results as far as stiffness, which however varies in a continuous manner, instead of varying by steps.
  • the strap according to the invention could be obtained by associating thereto - by glueing onto both of its major faces - stiffening strips of metal or plastic material, having suitable characteristics. Such strips should of course vary in thickness or width, by steps or in a continuous manner.
  • the passage from flexible layers to stiff layers should be gradual, in the sense of the thickness in the strap and, for this purpose, it is appropriate to introduce also the use of a third material (not shown in the drawing) with intermediate characteristics of flexibility.
  • the strap according to the invention can be improved even further by applying onto both of its major faces a layer of antifriction material, as "Teflon".
  • the loom can be operated at speeds and for lengths of time so far unthinkable.
  • the aforespecified frictions are in fact considerably reduced, resulting into less heating and wear of the strap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Belt Conveyors (AREA)
  • Woven Fabrics (AREA)
EP83108331A 1982-09-03 1983-08-24 Courroie à flexibilité variable pour métiers à tisser à lances porte-trame Expired EP0102588B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83108331T ATE31330T1 (de) 1982-09-03 1983-08-24 Antriebsband mit variabler steife fuer greiferwebmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2311582 1982-09-03
IT8223115A IT1210932B (it) 1982-09-03 1982-09-03 Nastro di comando di pinze portatrama in telai di tessitura avente rigidita' variabile.

Publications (3)

Publication Number Publication Date
EP0102588A2 true EP0102588A2 (fr) 1984-03-14
EP0102588A3 EP0102588A3 (en) 1984-05-23
EP0102588B1 EP0102588B1 (fr) 1987-12-09

Family

ID=11203943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108331A Expired EP0102588B1 (fr) 1982-09-03 1983-08-24 Courroie à flexibilité variable pour métiers à tisser à lances porte-trame

Country Status (5)

Country Link
EP (1) EP0102588B1 (fr)
AT (1) ATE31330T1 (fr)
DE (1) DE3374881D1 (fr)
HK (1) HK103290A (fr)
IT (1) IT1210932B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585735A1 (fr) * 1985-07-30 1987-02-06 Dornier Gmbh Lindauer Lance pour metier a tisser automatique sans navette.
EP0253184A1 (fr) * 1986-07-15 1988-01-20 GebràœDer Sulzer Aktiengesellschaft Dispositif pour l'insertion du fil de trame dans un métier à tisser à griffes
EP0341522A1 (fr) * 1988-05-10 1989-11-15 VAMATEX S.p.A. Ruban pour contrôler le mouvement des pinces-trame dans les métiers à tisser sans navette
EP0412453A1 (fr) * 1989-08-09 1991-02-13 NUOVA VAMATEX S.p.A. Ruban pour aiguille avec épaisseur variable pour métiers à aiguilles
EP0414214A2 (fr) * 1989-08-24 1991-02-27 Neste Oy Bande résistante à l'abrasion, et procédé pour sa fabrication
EP0741200A1 (fr) * 1995-05-04 1996-11-06 Picanol N.V. Dispositif à griffes pour un métier à tisser à griffes
EP0939155A2 (fr) * 1998-02-18 1999-09-01 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Dispositif d'insertion de la trame et ruban d'insertion pour métiers à tisser à griffes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2030433A1 (en) * 1970-06-20 1971-12-30 Fa. Hermann Wangner, 7410 Reutlingen Weft lance - with bowed steel spring stiffners
DE2902729B1 (de) * 1979-01-25 1980-02-21 Dornier Gmbh Lindauer Schussfadeneintragorgan fuer schuetzenlose Webmaschinen
DE3042054A1 (de) * 1980-11-07 1982-06-03 Lindauer Dornier-Gesellschaft Mbh, 8990 Lindau Greiferstange fuer schuetzenlose webmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2030433A1 (en) * 1970-06-20 1971-12-30 Fa. Hermann Wangner, 7410 Reutlingen Weft lance - with bowed steel spring stiffners
DE2902729B1 (de) * 1979-01-25 1980-02-21 Dornier Gmbh Lindauer Schussfadeneintragorgan fuer schuetzenlose Webmaschinen
DE3042054A1 (de) * 1980-11-07 1982-06-03 Lindauer Dornier-Gesellschaft Mbh, 8990 Lindau Greiferstange fuer schuetzenlose webmaschinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RESEARCH DISCLOSURE, no. 199, November 1980, pages 480,481, no. 19933, Havant Hampshire, GB. *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585735A1 (fr) * 1985-07-30 1987-02-06 Dornier Gmbh Lindauer Lance pour metier a tisser automatique sans navette.
US4690177A (en) * 1985-07-30 1987-09-01 Lindauer Dornier Gesellschaft Mbh Gripper rod for shuttleless looms
EP0253184A1 (fr) * 1986-07-15 1988-01-20 GebràœDer Sulzer Aktiengesellschaft Dispositif pour l'insertion du fil de trame dans un métier à tisser à griffes
EP0341522A1 (fr) * 1988-05-10 1989-11-15 VAMATEX S.p.A. Ruban pour contrôler le mouvement des pinces-trame dans les métiers à tisser sans navette
US4982767A (en) * 1988-05-10 1991-01-08 Vamatex S.P.A. Wear indicator for weft gripper strap
EP0412453A1 (fr) * 1989-08-09 1991-02-13 NUOVA VAMATEX S.p.A. Ruban pour aiguille avec épaisseur variable pour métiers à aiguilles
EP0414214A2 (fr) * 1989-08-24 1991-02-27 Neste Oy Bande résistante à l'abrasion, et procédé pour sa fabrication
EP0414214A3 (en) * 1989-08-24 1991-12-11 Neste Oy Abrasion resistant band and method of preparing the same
EP0741200A1 (fr) * 1995-05-04 1996-11-06 Picanol N.V. Dispositif à griffes pour un métier à tisser à griffes
EP0939155A2 (fr) * 1998-02-18 1999-09-01 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Dispositif d'insertion de la trame et ruban d'insertion pour métiers à tisser à griffes
EP0939155A3 (fr) * 1998-02-18 1999-09-08 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Dispositif d'insertion de la trame et ruban d'insertion pour métiers à tisser à griffes

Also Published As

Publication number Publication date
ATE31330T1 (de) 1987-12-15
IT8223115A0 (it) 1982-09-03
EP0102588B1 (fr) 1987-12-09
IT1210932B (it) 1989-09-29
EP0102588A3 (en) 1984-05-23
HK103290A (en) 1990-12-14
DE3374881D1 (en) 1988-01-21

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