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EP0488915B1 - Driving system for the knife boxes of a shed-forming mechanism such as a dobby - Google Patents

Driving system for the knife boxes of a shed-forming mechanism such as a dobby Download PDF

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Publication number
EP0488915B1
EP0488915B1 EP91420420A EP91420420A EP0488915B1 EP 0488915 B1 EP0488915 B1 EP 0488915B1 EP 91420420 A EP91420420 A EP 91420420A EP 91420420 A EP91420420 A EP 91420420A EP 0488915 B1 EP0488915 B1 EP 0488915B1
Authority
EP
European Patent Office
Prior art keywords
rocker
articulated
rockers
frames
arms
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
EP91420420A
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German (de)
French (fr)
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EP0488915A1 (en
Inventor
Dario Bassi
Joseph Palau
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.)
Staeubli Verdol SA
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Staeubli Verdol SA
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Application filed by Staeubli Verdol SA filed Critical Staeubli Verdol SA
Publication of EP0488915A1 publication Critical patent/EP0488915A1/en
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Publication of EP0488915B1 publication Critical patent/EP0488915B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/06—Double-lift jacquards
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/32—Jacquard driving mechanisms
    • D03C3/36—Griffe operating mechanisms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C5/00—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices
    • D03C5/02—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices operated by rotating cams

Definitions

  • the crowd training devices of a loom have two frames which move in opposition in a back and forth movement so as to control the raising and lowering of warp threads to allow the passage between them of a weft thread or pick.
  • the movement of these frames is carried out thanks to a control assembly comprising cams, connecting rods and levers from a main shaft rotating in synchronism with that of the loom.
  • the improvements which are the subject of the present invention are aimed at implementing a control assembly for the movement of the frames, the number of elements of which is as small as possible so as to reduce the inertia, to reduce the costs. , the limitation of the number of parts resulting in greater ease of control of the mechanical clearances between said parts.
  • a known mechanism comprising cams actuating a bent lever is described, for example, in document DE-U-81 10 100.
  • Another mechanism of this kind is described in EP-A-0 136 244.
  • the control assembly comprises, on either side of the crowd-forming device, two cams which are each engaged with the end of an angled lever fixed on a shaft to which a flail is secured at the free ends of which the first ends of two connecting rods are articulated, the other ends of which are articulated respectively to two rockers, the first provided double, that is to say made up of two arms spaced from one another oriented in opposite directions and wedged on a pivoting axis in a bearing of the chassis and the second, simple, disposed between the two arms of the first rocker and mounted for rotation about said axis of the latter, while said rockers are connected to the frames by articulated levers .
  • an armor mechanism essentially comprising a frame 1 resting on two beams 2 and 3 situated above a weaving loom not shown.
  • the frame 1 is provided with a control shaft 4 rotating in synchronism with that of the loom by means not shown.
  • the frame 1 constitutes slides 1 a along which move back and forth in an opposite manner two frames 5, 6 intended, as is well known in practice, to raise and lower the arches associated with the healds cooperating with warp threads arranged on the loom.
  • the rocker 16 is produced by means of two arms 16 a , 16 b separated laterally and mounted for rotation on a fixed axis 18.
  • the connecting rod 15 attacks the lateral tab 16 c of the lever 16 a .
  • the two levers 16 a , 16 b each have an oblong slot 16 d , 16 e .
  • the rocker 17 is mounted for rotation about the axis 18 and is pivoted by the action of the connecting rod 14 engaging a side tab 17 has said rocker 17 which affects roughly the shape of a T.
  • the two branches of the latter have longitudinal lights 17 b , 17 c .
  • Each of the lights 16 e , 16 d , respectively 17 b , 17 c is associated with a stud 19, 20, 21, 22.
  • the studs 19 and 21 are associated with one of the ends of a long vertical lever 23, 24 whose other end is associated with the lower frame 6, while the studs 20 and 22 are articulated at one end of a short vertical lever 25, 26 whose other ends are articulated to the upper frame 5.
  • FIG. 3 Illustrated in fig. 3 very schematically all of the control according to the invention which shows that on either side of the mechanics is a mechanism such as that shown in fig. 1.
  • the upper frame 5 is attached to two vertical levers 25 and two vertical levers 26 which are further articulated as indicated above on the rockers 16 and 17.
  • the lower frame 6 is attached to two levers 23 and with two levers 24 dependent on the rockers 16, 17.
  • the flails 13 cause rods to move in the direction of the arrows F1, F2, that is to say in opposite directions so that the two levers 16 and 17 tilt in opposite directions on each side of the mechanics.
  • the frames 5 and 6 are alternately raised and lowered in opposite directions.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Toys (AREA)
  • Transmission Devices (AREA)

Description

On sait que les dispositifs de formation de la foule d'un métier à tisser comportent deux cadres qui se déplacent en opposition suivant un mouvement de va-et-vient de manière à commander l'élévation et l'abaissement des fils de chaîne pour permettre le passage entre eux d'un fil de trame ou duite. Le mouvement de ces cadres s'effectue grâce à un ensemble de commande comportant des cames, des bielles et des leviers à partir d'un arbre principal tournant en synchronisme avec celui du métier à tisser.We know that the crowd training devices of a loom have two frames which move in opposition in a back and forth movement so as to control the raising and lowering of warp threads to allow the passage between them of a weft thread or pick. The movement of these frames is carried out thanks to a control assembly comprising cams, connecting rods and levers from a main shaft rotating in synchronism with that of the loom.

Les métiers modernes étant de plus en plus rapides, il est nécessaire d'imprimer aux cadres précités des vitesses importantes qui ne sont pas toujours compatibles avec la complexité des ensembles de commande connus jusqu'à présent.As modern trades are becoming faster and faster, it is necessary to impart high speeds to the above-mentioned frames which are not always compatible with the complexity of the control assemblies known up to now.

Les perfectionnements qui font l'objet de la présente invention visent à la mise en oeuvre d'un ensemble de commande du mouvement des cadres dont le nombre d'éléments soit aussi réduit que possible de manière à diminuer l'inertie, à réduire les coûts, la limitation du nombre de pièces entraînant une plus grande facilité de maîtrise des jeux mécaniques entre lesdites pièces.The improvements which are the subject of the present invention are aimed at implementing a control assembly for the movement of the frames, the number of elements of which is as small as possible so as to reduce the inertia, to reduce the costs. , the limitation of the number of parts resulting in greater ease of control of the mechanical clearances between said parts.

Un mécanisme connu comportant des cames actionnant un levier coudé, est décrit, par exemple, dans le document DE-U-81 10 100. Un autre mécanisme de ce genre est décrit dans EP-A-0 136 244.A known mechanism comprising cams actuating a bent lever is described, for example, in document DE-U-81 10 100. Another mechanism of this kind is described in EP-A-0 136 244.

L'ensemble de commande suivant l'invention comprend, de part et d'autre du dispositif de formation de la foule, deux cames qui sont chacune en prise avec l'extrémité d'un levier coudé calé sur un arbre auquel est solidarisé un fléau aux extrémités libres duquel sont articulées les premières extrémités de deux bielles dont les autres extrémités s'articulent respectivement à deux basculeurs, le premier prévu double, c'est-à-dire constitué de deux bras écartés l'un de l'autre orientés en directions opposées et calé sur un axe pivotant dans un palier du châssis et le second, simple, disposé entre les deux bras du premier basculeur et monté à rotation autour dudit axe de ces derniers, tandis que lesdits basculeurs sont reliés aux cadres par des leviers articulés.The control assembly according to the invention comprises, on either side of the crowd-forming device, two cams which are each engaged with the end of an angled lever fixed on a shaft to which a flail is secured at the free ends of which the first ends of two connecting rods are articulated, the other ends of which are articulated respectively to two rockers, the first provided double, that is to say made up of two arms spaced from one another oriented in opposite directions and wedged on a pivoting axis in a bearing of the chassis and the second, simple, disposed between the two arms of the first rocker and mounted for rotation about said axis of the latter, while said rockers are connected to the frames by articulated levers .

L'invention est revendiquée dans les revendications 1-2.The invention is claimed in claims 1-2.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :

  • Fig. 1 est une vue en élévation d'une mécanique d'armure comportant un ensemble de commande établi conformément à l'invention.
  • Fig. 2 est une vue de détail en perspective des deux basculeurs de commande des cadres de la mécanique de fig. 1.
  • Fig. 3 est une vue en perspective schématique illustrant la structure de l'ensemble de commande suivant l'invention.
The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
  • Fig. 1 is an elevational view of an armor mechanism comprising a control assembly established in accordance with the invention.
  • Fig. 2 is a detailed perspective view of the two rockers for controlling the frames of the mechanics of FIG. 1.
  • Fig. 3 is a schematic perspective view illustrating the structure of the control assembly according to the invention.

On a représenté en fig. 1 une mécanique d'armure comportant essentiellement un châssis 1 reposant sur deux poutrelles 2 et 3 situées au-dessus d'un métier à tisser non représenté. A la manière usuelle, le châssis 1 est muni d'un arbre de commande 4 tournant en synchronisme avec celui du métier à tisser grâce à des moyens non représentés. Le châssis 1 constitue des glissières 1a le long desquelles se déplacent en va-et-vient de manière opposée deux cadres 5, 6 destinés, comme cela est bien connu dans la pratique, à élever et à abaisser les arcades associées aux lisses coopérant avec les fils de chaîne disposés sur le métier à tisser.There is shown in fig. 1 an armor mechanism essentially comprising a frame 1 resting on two beams 2 and 3 situated above a weaving loom not shown. In the usual way, the frame 1 is provided with a control shaft 4 rotating in synchronism with that of the loom by means not shown. The frame 1 constitutes slides 1 a along which move back and forth in an opposite manner two frames 5, 6 intended, as is well known in practice, to raise and lower the arches associated with the healds cooperating with warp threads arranged on the loom.

De part et d'autre du châssis 1 sont angulairement calés sur les parties dépassantes de l'arbre 4 deux cames 7, 8, chacune en prise avec le galet extrême 9, 10 des bras d'un levier coudé 11 monté angulairement fixe par rapport à un arbre 12 pivotant dans le châssis 1. Sur l'arbre 12 est calé un fléau 13 à bras inégaux dont les bouts sont articulés à l'une des extrémités d'une bielle 14, respectivement 15 dont l'autre extrémité s'articule respectivement à deux basculeurs 17, 16.On either side of the chassis 1 are angularly wedged on the protruding parts of the shaft 4 two cams 7, 8, each in engagement with the end roller 9, 10 of the arms of a bent lever 11 mounted angularly fixed relative to to a shaft 12 pivoting in the chassis 1. On the shaft 12 is wedged a flail 13 with unequal arms whose ends are articulated at one end of a connecting rod 14, respectively 15 whose other end is articulated respectively with two rockers 17, 16.

Comme illustré en fig. 2, le basculeur 16 est réalisé au moyen de deux bras 16a, 16b séparés latéralement et montés à rotation sur un axe fixe 18. La bielle 15 attaque la patte latérale 16c du levier 16a. On observe que les deux leviers 16a, 16b comportent chacun une lumière oblongue 16d, 16e.As illustrated in fig. 2, the rocker 16 is produced by means of two arms 16 a , 16 b separated laterally and mounted for rotation on a fixed axis 18. The connecting rod 15 attacks the lateral tab 16 c of the lever 16 a . It can be seen that the two levers 16 a , 16 b each have an oblong slot 16 d , 16 e .

Le basculeur 17 est monté à rotation autour de l'axe 18 et pivote grâce à l'action de la bielle 14 attaquant une patte latérale 17a dudit basculeur 17 qui affecte en gros la forme d'un T. Les deux branches de ce dernier comportent des lumières longitudinales 17b, 17c.The rocker 17 is mounted for rotation about the axis 18 and is pivoted by the action of the connecting rod 14 engaging a side tab 17 has said rocker 17 which affects roughly the shape of a T. The two branches of the latter have longitudinal lights 17 b , 17 c .

Chacune des lumières 16e, 16d, respectivement 17b, 17c est associée à un goujon 19, 20, 21, 22. Les goujons 19 et 21 sont associés à l'une des extrémités d'un levier vertical long 23, 24 dont l'autre extrémité est associée au cadre inférieur 6, tandis que les goujons 20 et 22 sont articulés à l'une des extrémités d'un levier vertical court 25, 26 dont les autres extrémités sont articulées au cadre supérieur 5.Each of the lights 16 e , 16 d , respectively 17 b , 17 c is associated with a stud 19, 20, 21, 22. The studs 19 and 21 are associated with one of the ends of a long vertical lever 23, 24 whose other end is associated with the lower frame 6, while the studs 20 and 22 are articulated at one end of a short vertical lever 25, 26 whose other ends are articulated to the upper frame 5.

On a illustré en fig. 3 de manière très schématique l'ensemble de la commande suivant l'invention qui montre que de part et d'autre de la mécanique se trouve un mécanisme tel que celui représenté en fig. 1. Ainsi, le cadre supérieur 5 est accroché à deux leviers verticaux 25 et à deux leviers verticaux 26 qui sont articulés en outre comme indiqué ci-dessus aux basculeurs 16 et 17. De même, le cadre inférieur 6 est accroché à deux leviers 23 et à deux leviers 24 dépendants des basculeurs 16, 17.Illustrated in fig. 3 very schematically all of the control according to the invention which shows that on either side of the mechanics is a mechanism such as that shown in fig. 1. Thus, the upper frame 5 is attached to two vertical levers 25 and two vertical levers 26 which are further articulated as indicated above on the rockers 16 and 17. Similarly, the lower frame 6 is attached to two levers 23 and with two levers 24 dependent on the rockers 16, 17.

Lorsque l'arbre 12 bascule dans un sens et dans l'autre, les fléaux 13 font déplacer des bielles dans le sens des flèches F1, F2 c'est-à-dire en sens contraires afin que les deux leviers 16 et 17 basculent en sens inverses de chaque côté de la mécanique. Ainsi, les cadres 5 et 6 sont-ils alternativement élevés et abaissés en sens opposés.When the shaft 12 rocks in one direction and in the other, the flails 13 cause rods to move in the direction of the arrows F1, F2, that is to say in opposite directions so that the two levers 16 and 17 tilt in opposite directions on each side of the mechanics. Thus, the frames 5 and 6 are alternately raised and lowered in opposite directions.

En déplacant les goujons 19-22 dans leurs lumières respectives, on peut soit obtenir un déplacement parallèle des cadres, soit un déplacement avec une certaine ouverture angulaire de manière à constituer une foule oblique.By moving the studs 19-22 in their respective slots, one can either obtain a parallel displacement of the frames, or a displacement with a certain angular opening so as to constitute an oblique crowd.

On a ainsi réalisé une commande aussi directe que possible des cadres 5 et 6 de manière à obtenir une plus grande précision et par conséquent une vitesse supérieure à celle des mécaniques dont les cadres sont entraînés par des mécanismes plus complexes.As a direct control as possible has been achieved of the frames 5 and 6 so as to obtain greater precision and therefore a speed greater than that of the mechanics whose frames are driven by more complex mechanisms.

Claims (2)

  1. An operating assembly for the reciprocating movement of the frames (5-6) of a shedding device of a weaving loom, particularly of a dobby loom, of the type comprising cams (7-8) which operate rocker bars and levers, wherein on both sides of the underframe of the device the cams are each in engagement with the end of an elbow lever (11), characterised in that the said lever (11) is fixed to a shaft (12) on which a balance arm (13) is integrally formed, to the free ends of which balance arm the first ends of two connecting rods (14, 15) are articulated, the other ends of which are respectively articulated to two rockers (16, 17), the first rocker (16) being of double construction, namely formed by two arms (16a, 16b) which are spaced apart from each other, oriented in opposite directions and rotatably mounted on a spindle (18), and the second rocker (17) being a single rocker disposed between the two arms (16a, 16b) of the first rocker (16) and rotatably mounted about the said spindle (18) of the said arms, whilst the said rockers (16, 17) are linked to the frames (5, 6) by articulated levers (23, 24, 25, 26).
  2. An assembly according to claim 1, characterised in that the rockers (16, 17) each comprise a side lug (16c, 17a) to which the corresponding connecting rod (14, 15) is articulated.
EP91420420A 1990-11-27 1991-11-26 Driving system for the knife boxes of a shed-forming mechanism such as a dobby Expired - Lifetime EP0488915B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9015140 1990-11-27
FR9015140A FR2669648B1 (en) 1990-11-27 1990-11-27 ASSEMBLY FOR CONTROLLING THE MOVEMENT OF THE FRAMES OF A CROWD FORMING DEVICE SUCH AS AN ARMOR MECHANICS.

Publications (2)

Publication Number Publication Date
EP0488915A1 EP0488915A1 (en) 1992-06-03
EP0488915B1 true EP0488915B1 (en) 1995-05-10

Family

ID=9402858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420420A Expired - Lifetime EP0488915B1 (en) 1990-11-27 1991-11-26 Driving system for the knife boxes of a shed-forming mechanism such as a dobby

Country Status (6)

Country Link
US (1) US5183080A (en)
EP (1) EP0488915B1 (en)
JP (1) JP2904978B2 (en)
DE (1) DE69109636T2 (en)
ES (1) ES2072586T3 (en)
FR (1) FR2669648B1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690696B1 (en) * 1992-04-30 1995-06-23 Staubli Verdol COMPLIANCE MECHANISM OF CLAW FRAMES OF A CROWD FORMING DEVICE OF A WEAVING MATERIAL.
FR2717189B1 (en) * 1994-03-10 1996-07-19 Staubli Verdol Back and forth movement control mechanism of the claw frames of an armor mechanic.
FR2736939B1 (en) * 1995-07-18 1997-09-05 Staubli Sa Ets MECHANICAL JACQUARD ACTUATED BY COAXIAL SHAFTS
FR2757544B1 (en) * 1996-12-19 1999-03-05 Staubli Lyon CROWD FORMING DEVICE, MOUNTING METHOD AND JACQUARD TYPE WEAVING EQUIPMENT PROVIDED WITH SUCH A DEVICE
BE1016559A4 (en) * 2005-03-21 2007-01-09 Wiele Michel Van De Nv JACQUARD DEVICE.
BE1017667A3 (en) * 2007-07-02 2009-03-03 Wiele Michel Van De Nv Jacquard device, has knife grid driving levers directly connected to eccentric shaft via drive rods in front and behind this device
CN101831743B (en) * 2010-05-05 2011-08-31 汪建兴 Transmission mechanism for griffe of jacquard
CN104562359B (en) * 2015-01-23 2017-11-10 浙江奇汇电子提花机有限公司 Jacquard rod head adjustment structure

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596177A (en) * 1947-08-23 1952-05-13 Schiavon Bruno Heald raising device for weaving looms
US2727538A (en) * 1950-10-12 1955-12-20 Staubli Geb & Co Dobby loom and method of weaving
DE1535220B1 (en) * 1965-03-10 1970-12-23 Grosse Webereimaschinen Gmbh Shed forming device for double-stroke jacquard machines
JPS5620635A (en) * 1979-07-26 1981-02-26 Toyoda Automatic Loom Works Opening apparatus of warp yarn in loom
DE8110100U1 (en) * 1981-04-03 1983-10-27 Maschinenfabrik Carl Zangs Ag, 4150 Krefeld RETURN DEVICE FOR JACQUARD MACHINES
IT8222086V0 (en) * 1982-06-07 1982-06-07 Tagliabue Spa DOUBLE LIFT JACQUARD EQUIPMENT.
FR2534936A1 (en) * 1982-10-20 1984-04-27 Staubli Sa Ets LEVELING DEVICE FOR CAMERA WEAPON MECHANICS OF THE NEGATIVE TYPE
FR2551096B1 (en) * 1983-08-26 1986-06-06 Staubli Verdol IMPROVED MECHANISM FOR THE ORDER OF THE CLAW FRAMES OF AN ARMOR MECHANICS
DE3721932A1 (en) * 1987-07-02 1989-01-19 Grosse Webereimaschinen Gmbh DOUBLE LIFT OPEN-PACK JACQUARD MACHINE

Also Published As

Publication number Publication date
EP0488915A1 (en) 1992-06-03
JP2904978B2 (en) 1999-06-14
ES2072586T3 (en) 1995-07-16
DE69109636D1 (en) 1995-06-14
US5183080A (en) 1993-02-02
FR2669648B1 (en) 1993-01-29
JPH04263643A (en) 1992-09-18
DE69109636T2 (en) 1995-09-07
FR2669648A1 (en) 1992-05-29

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