EP0620303A1 - Métier à tisser à griffes - Google Patents

Métier à tisser à griffes Download PDF

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Publication number
EP0620303A1
EP0620303A1 EP94103147A EP94103147A EP0620303A1 EP 0620303 A1 EP0620303 A1 EP 0620303A1 EP 94103147 A EP94103147 A EP 94103147A EP 94103147 A EP94103147 A EP 94103147A EP 0620303 A1 EP0620303 A1 EP 0620303A1
Authority
EP
European Patent Office
Prior art keywords
shed
rapier
guide
belt
guide means
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Withdrawn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
EP94103147A
Other languages
German (de)
English (en)
Inventor
Denis Moeneclaey
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.)
Picanol NV
Original Assignee
Picanol NV
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 Picanol NV filed Critical Picanol NV
Publication of EP0620303A1 publication Critical patent/EP0620303A1/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Withdrawn legal-status Critical Current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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/277—Guide mechanisms
    • 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
    • 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 invention relates to a rapier weaving machine with at least one rapier, which is arranged on a rapier belt that can be inserted into a shed and pulled out of the shed, with guide means arranged laterally outside the shed for guide surfaces of the rapier belt and with a plurality of moveable into the shed and guide means for guide surfaces of the gripper belt that can be moved out of the shed.
  • Guide means for the rapier belt are arranged laterally outside the shed between the drive wheel and the shed, and they cooperate with guide surfaces of the rapier belt and align it with the shed.
  • a plurality of guide means that can be moved into and out of the shed are provided, which guide the gripper belt on guide surfaces within the shed.
  • the invention is based on the knowledge that the wear is essentially caused by the movable guide means.
  • these movable guide means only have relatively small guide surfaces, while on the other hand they can only be aligned with great difficulty because they are individually attached.
  • the wear therefore essentially arises from not precisely aligned, movable guide means. Since, according to the invention, the movable guide means do not act on the same guide surfaces on which the guide means arranged outside the shed engage, wear on the guide surfaces assigned to these guide means is largely avoided.
  • the gripper belt is thus guided independently of the wear of the guide surfaces assigned to the movable guide means outside the shed by the guide means arranged outside the shed, so that an exact introduction into the shed is ensured.
  • the guide surfaces assigned to the guide means arranged outside the shed preferably extend essentially over the entire length of the gripper belt so that the gripper belt is guided continuously.
  • the rapier weaving machine shown in FIGS. 1 to 3 contains two rapier belts (1).
  • a looper belt (1) carries a gripper (2), the so-called donor gripper, which transports a weft thread from one side to the middle of the machine.
  • the other looper belt has a gripper (3), a so-called slave gripper, which takes over the weft thread and transports it to the opposite side of the weaving machine.
  • Drive means (4) for the gripper belts (1) are provided in the area of side frames (5). These drive means contain a drive wheel (6) which is driven synchronously with other elements of the loom, for example via a gear.
  • the drive wheels (6) are assigned guide blocks (7) which hold the gripper belts (1) on the drive wheels.
  • a comb drawer (8) is supported in the side frames (5) and carries a reed (9).
  • the comb drawer (8) is provided with drive means (10) which are synchronized with the drives (4) of the gripper belts (1).
  • the comb drawer (8) has a comb drawer axis (15) which carries a comb drawer profile (16).
  • a reed (9) is fastened to the comb drawer profile (16) by means of a clamp fastening (17).
  • a further profile (18) is fastened to the comb shutter profile (16), to which the individual guide means (12) which can be moved into and out of the shed (14) are fastened by means of screws (21).
  • the shed (14) is formed between upper warp threads (19) and lower warp threads (20) by means of shed forming devices, not shown.
  • the warp threads (19, 20) converge towards the fabric (22). 2 and 3, the comb drawer is in its rear position, in which the shed is fully open.
  • the guidance of the gripper belts (1) is designed identically for the slave gripper (2) and the encoder gripper (3), so that it is sufficient if details of this guidance are explained in the following only in connection with the gripper belt (1) of the master gripper (2) .
  • the rapier belt (1) has guide surfaces (23, 24, 25, 26) that work exclusively with the stationary guide means (11), but not with the ones attached to the comb drawer (8) and into and into the shed (14) movable guide means (12).
  • the guide surfaces (23, 24, 25, 26) work together with the guide means (11) which is arranged in a stationary manner laterally outside the shed (14) in such a way that the rapier belt is guided in two transverse directions (B) and (C) which are essentially perpendicular to one another .
  • the two narrow sides of the gripper belt (1) serve as guide surfaces (24, 26). Edge regions of the upper side and the lower side of the gripper belt, which are located in the vicinity of a narrow side, serve as further guide surfaces (23, 25).
  • the stationary guide means (11) have corresponding guides (27, 28, 29, 30).
  • the guide part (13) As can be seen from FIG. 4, there is a relatively large amount of play between the guide part (13) arranged in the area of the gripper (2) and the stationary guide means (11). In contrast, the guide part (13) with its mutually opposite guide surfaces (31, 33; 32, 34) has very little play in the corresponding guide of the movable guide means (12). It is therefore possible to guide the grippers (2 or 3) exactly by means of the guide means (12).
  • the movable guide means (12) are also provided with guides (37, 38) which cooperate with guide surfaces (35) on the top and (36) on the bottom of the gripper belt (1).
  • the gripper belt is thus also guided in direction (B) transverse to the direction of movement of the gripper belt (1) by means of the guide means (12).
  • the gripper belt (1) is constantly guided in two directions (B and C) running perpendicular to one another transversely to the direction of movement in the stationary guide means (11), there is the advantage that no abrupt movements or vibrations occur in the gripper belt (1).
  • the gripper belt (1) and the guide part (13) of the gripper (2 and 3) leave the stationary guide means (11) or are returned again.
  • Wear on the guide surfaces (35, 36), which are assigned to the movable guide means (12) has no influence on the guidance of the gripper belt (1) in the guide means (11) or on the guidance of the guide part (13) in the guide means (12).
  • the reduction of the vibrations of the gripper belt (1) also has the advantage that the guide surfaces (35, 36) of the gripper belt (1) and the guide part (13) under the action of the guides (37, 38) of the guide means (12) are less exposed to wear. Since the guide surfaces (23 to 26) are not guided by the guide means (12) in the shed (14), a greater overlap of the comb drawer movement with the gripper movement is possible.
  • the grippers (2, 3) can already be brought into the shed (14) or withdrawn from it when the comb tray (8) is not or is no longer in its outermost position. This is possible without moving guide means (12) being dispensed with in the region of the side edge of the compartment (14).
  • FIGS. 6 to 8 The attachment of the guide part (13) in the area of the sensor gripper (2) to the gripper belt (1) is shown in FIGS. 6 to 8.
  • a recess is milled into which the guide part (13) is inserted.
  • This guide part (13) is fastened together with the encoder gripper (2) to the gripper belt (1) by means of screws (65) and nuts (66) in such a way that the gripper belt (1) is clamped between the guide part (13) and the encoder gripper (2) .
  • the slave gripper (3) is attached in a corresponding manner to its gripper belt (1).
  • the guide part (13) extends approximately to the guide surface (25), but it ends in such a way that it remains outside the guide surface (25) and therefore does not touch the guide (29) of the stationary guide means (11).
  • the looper belt (1) is thus not interrupted in the region of the guide surfaces (24, 25), so that no warp threads can get caught between the looper belt (1) and the guide part (13), which could lead to warp thread breaks. This is particularly important for incorrectly separated warp threads, especially for warp threads that are located below the rapier belt (1), but actually belong to the upper warp threads (19) and should be located there. Since the guide surfaces (24, 25) that can touch the warp threads are subject to only slight wear, damage to the warp threads is avoided in this area.
  • the guide part (13) also leaves the guide surfaces (23 and 26) free.
  • the gripper belt (1) is provided with recesses (39) which cooperate with a toothing arranged on the drive wheel (6).
  • the stationary guide means (11) has guides (40, 41) which cooperate with the guide surfaces (35, 36) of the gripper belt (1), which are in themselves the movable guide means (12) assigned.
  • the gripper belt (1) is still in the two mutually perpendicular directions (B and C) transverse to Direction of movement in the stationary guide means (11) safely guided by means of the guides (27, 28, 29, 30).
  • the guides (40, 41) of the stationary guide means (11) only serve to increase safety.
  • the guide part (13) is provided with a longitudinal groove (42) to which a web (43) of the guide means (12) is assigned.
  • the risk of warp threads getting stuck to the guide means is reduced, which is inherent in certain bindings and / or incorrectly separated warp threads.
  • a guide part is attached to the top of the gripper belt (1).
  • this guide part is then between the gripper belt (1) and the gripper (2 or 3).
  • the gripper belt (1) is provided with a longitudinal groove (44).
  • This longitudinal groove (44) creates two profiles running in the longitudinal direction on the side of the rapier belt (1), one for guidance in the stationary guide means (11) and the other for guidance in the guide means (12) that can be moved into the shed (14) ) be exploited.
  • the gripper belt (1) is guided with the guide surfaces (23, 24, 25) and a guide surface (45) of the side wall of the longitudinal groove (44) in the guide means (11) arranged outside the shed (14).
  • This guide means (11) is provided with corresponding guides (27, 28, 29, 46).
  • the guide surfaces (23, 24, 25, 45) are located in the area of the side (47) of the rapier belt (1) facing the reed (9) and do not work together with the guide means (12) that can be inserted into the shed (14).
  • the longitudinal profile of the opposite side (48) of the rapier belt (1) is provided with guide surfaces (49, 50, 51, 52) which cooperate with the guide means (12) which can be inserted into the shed (14).
  • a side wall of the longitudinal groove (44) serves as a guide surface (52).
  • the gripper belt (1) with guide surfaces (23, 24, 25) is guided by guides (27, 28, 29) of the stationary guide means (11).
  • a support (53) for the lower warp threads (20) is arranged on the profile element (18) of the comb drawer (8).
  • the support (53) consists of a soft and / or elastic material.
  • the lower warp threads (20) together with the support (53) form a guide for the looper belt (1).
  • the gripper belt (1) is guided with guides (63, 64) of guide means (12) which can be inserted into the shed (14) and which are attached to the profile element (18).
  • the guide surfaces (23, 24, 25) do not work together with the guide means (12).
  • a support (54) is attached to the gripper (2) and works together with the reed (9), not shown.
  • the support (54) has a tab which works together with the stationary guide means (11) in a manner not shown to increase the guiding security.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP94103147A 1993-04-15 1994-03-03 Métier à tisser à griffes Withdrawn EP0620303A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9300369 1993-04-15
BE9300369A BE1007003A3 (nl) 1993-04-15 1993-04-15 Weefmachine voorzien van een lans en geleidingsmiddelen.

Publications (1)

Publication Number Publication Date
EP0620303A1 true EP0620303A1 (fr) 1994-10-19

Family

ID=3886974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103147A Withdrawn EP0620303A1 (fr) 1993-04-15 1994-03-03 Métier à tisser à griffes

Country Status (3)

Country Link
US (1) US5413151A (fr)
EP (1) EP0620303A1 (fr)
BE (1) BE1007003A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0741200A1 (fr) * 1995-05-04 1996-11-06 Picanol N.V. Dispositif à griffes pour un métier à tisser à griffes
EP0623694B2 (fr) † 1993-05-05 2001-05-02 NUOVA VAMATEX S.p.A. Ruban à griffes pour métiers à tisser

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2314095B (en) * 1996-06-14 2000-05-17 Griffith Textile Mach Ltd Gripper type loom
BE1011147A3 (nl) * 1997-05-07 1999-05-04 Picanol Nv Grijperweefmachine voorzien voor geleidingsmiddelen.
US6073660A (en) * 1999-11-18 2000-06-13 Williams-Pyro, Inc. Rotary apparatus for dent spacing variation for a loom reed
JP4595187B2 (ja) * 2000-10-12 2010-12-08 株式会社豊田自動織機 レピア織機における緯入れ装置
KR100435507B1 (ko) * 2001-04-18 2004-06-09 김영호 레피어 직기용 그리퍼 테이프 안내구
DE102004049255B4 (de) * 2004-10-05 2013-07-18 Picanol Führungselemente für ein Greifertransportelement einer Webmaschine
DE102004049254B4 (de) * 2004-10-05 2013-07-25 Picanol Greifertransportelement für eine Webmaschine
DE102004049256B4 (de) * 2004-10-05 2014-01-02 Picanol Führungselemente für ein Greifertransportelement einer Webmaschine
FR2903425B1 (fr) * 2006-07-07 2008-08-29 Schonherr Textilmaschb Gmbh Lance,son procede de fabrication,dispositif d'insertion de fils de trame comprenant une telle lance et metier a tisser comprenant un tel dispositif
BE1024494B1 (nl) * 2016-08-11 2018-03-12 Picanol Naamloze Vennootschap Grijperband en grijpereenheid voor een grijperweefmachine
BE1028436B1 (nl) * 2020-06-25 2022-01-31 Vandewiele Nv Geleidingsinrichting in een grijperweefmachine, grijperweefmachine en werkwijze voor het omvormen van een grijperweefmachine
EP4212658A1 (fr) 2022-01-13 2023-07-19 Picanol Dispositif de réglage d'une position d'un guide fixe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2270356A1 (fr) * 1972-03-04 1975-12-05 Desveus Duran Magin
EP0357974A1 (fr) * 1988-09-08 1990-03-14 NUOVA VAMATEX S.p.A. Moyens de guidage du mouvement des pinces de trame dans la foule d'un métier à tisser sans navette
EP0406926A1 (fr) * 1989-07-06 1991-01-09 Picanol N.V. Métier à tisser à griffes avec guidage des rubans
EP0576854A1 (fr) * 1992-07-03 1994-01-05 Picanol N.V. Métier à tisser à griffes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010776A (en) * 1975-11-28 1977-03-08 Rockwell International Corporation Tape wheel for shuttleless looms
IT1171737B (it) * 1983-10-10 1987-06-10 Vamatex Spa Gancio per la guida di nastri portapinze all'interno del passo di telai di tessitura e complesso di guida con esso realizzabile
JPS61146843A (ja) * 1984-12-12 1986-07-04 株式会社石川製作所 フレキシブルバンドレピア織機の緯入れ装置
DE3561477D1 (en) * 1985-05-03 1988-02-25 Sulzer Ag Weft insertion device for a gripper shuttle loom
IT1228493B (it) * 1989-01-20 1991-06-19 Nuovo Pignone Spa Perfezionamenti nel sistema di ancoraggio del supporto pinze al nastro trasportatore in un telaio tessile.
US5179979A (en) * 1990-07-16 1993-01-19 Sulzer Brothers Limited Rapier loom with inclined tape guide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2270356A1 (fr) * 1972-03-04 1975-12-05 Desveus Duran Magin
EP0357974A1 (fr) * 1988-09-08 1990-03-14 NUOVA VAMATEX S.p.A. Moyens de guidage du mouvement des pinces de trame dans la foule d'un métier à tisser sans navette
EP0406926A1 (fr) * 1989-07-06 1991-01-09 Picanol N.V. Métier à tisser à griffes avec guidage des rubans
US5183084A (en) * 1989-07-06 1993-02-02 Picanol N.V., Naamloze Vennootschap Rapier guide with two series of guide elements
EP0576854A1 (fr) * 1992-07-03 1994-01-05 Picanol N.V. Métier à tisser à griffes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0623694B2 (fr) † 1993-05-05 2001-05-02 NUOVA VAMATEX S.p.A. Ruban à griffes pour métiers à tisser
EP0741200A1 (fr) * 1995-05-04 1996-11-06 Picanol N.V. Dispositif à griffes pour un métier à tisser à griffes

Also Published As

Publication number Publication date
BE1007003A3 (nl) 1995-02-14
US5413151A (en) 1995-05-09

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