EP0443969B2 - Controlling mechanism for the movement of the needle frame of a shedding device - Google Patents

Controlling mechanism for the movement of the needle frame of a shedding device Download PDF

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Publication number
EP0443969B2
EP0443969B2 EP91420059A EP91420059A EP0443969B2 EP 0443969 B2 EP0443969 B2 EP 0443969B2 EP 91420059 A EP91420059 A EP 91420059A EP 91420059 A EP91420059 A EP 91420059A EP 0443969 B2 EP0443969 B2 EP 0443969B2
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EP
European Patent Office
Prior art keywords
frame
lever
movement
articulated
bed
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
EP91420059A
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German (de)
French (fr)
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EP0443969B1 (en
EP0443969A1 (en
Inventor
Dario Bassi
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 Lyon SA
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Publication date
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Application filed by Staeubli Lyon SA filed Critical Staeubli Lyon SA
Publication of EP0443969A1 publication Critical patent/EP0443969A1/en
Application granted granted Critical
Publication of EP0443969B1 publication Critical patent/EP0443969B1/en
Publication of EP0443969B2 publication Critical patent/EP0443969B2/en
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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
    • D03C3/24—Features common to jacquards of different types
    • D03C3/32—Jacquard driving mechanisms
    • D03C3/36—Griffe operating mechanisms

Definitions

  • a movement control mechanism back and forth from two claw frames from one trade to weaving is known, for example, from document DE-C-899 929 as well as CH-A- 433 139.
  • a crowd training system for a trade tape must have the most space small possible in length so as to decrease overall dimensions and moving masses.
  • the invention comprises on each side of its frame, at minus a set composed on the one hand a first lever articulated to this frame by one of its ends and to one of the claw frames by its opposite end, while said lever is associated with a command reciprocating and secondly a second lever whose ends are articulated respectively said claw frame and to the frame so that the latter, the two levers and the frame constitute a parallelogram irregular deformable, in order to communicate to it a movement such that in the high position it is oriented obliquely from its low position.
  • the distance between the axes of articulation of the two levers to the frame can be greater at the spacing between their axes of articulation to the frame.
  • each of the claw frames is arranged on either side of the frame 1, so that each frame of claws is cantilevered by compared to its control mechanism.
  • This provision is made possible by the fact that the width of frame 1 is weak when dealing with mechanics intended for the manufacture of narrow ribbons on a loom.
  • the frame 1 is crossed by a control shaft 3 rotating in synchronism with the control one of career.
  • This tree protrudes on each side of the frame to carry an eccentric 4.
  • Each eccentric constitutes a crank pin around which is rotatably mounted the head of a connecting rod 5 whose foot is articulated on an axis 6 integral with the top of a lever 7 of shape general triangular.
  • One end of the lever 7 is articulated with respect to the frame 1 around an axis 8, while its opposite end is articulated to the frame 2 via an axis 9.
  • Frame 2 is still connected to the frame by a second lever 10 whose axis hinge 11 on this lever is at a distance d below the hinge pin 9 of the lever 7 and which is different from that D separating the axis 8 from the axis 12 for pivoting the lever 10 relative to the frame 1.
  • the set of two levers 7 and 10 constitutes by therefore an irregular deformable parallelogram.
  • the connecting rod 5 causes a pivoting of the lever 7 around the axis 8. Because the presence of the lever 10, the frame 2 moves so in such a way that in the high position, illustrated in solid lines, it is oriented obliquely relative to its low position shown in broken lines.
  • the angular movement has lever 7, illustrated by the mixed lines 13, 14 uniting the centers of axes 8 and 9, causes the oblique displacement of the frame 2 upwards, so that the knives this frame which are arranged according to the mixed line 15, lie in a plane oblique to that in which they are located when frame 2 is at its low position.
  • lever 7, illustrated by the mixed lines 13, 14 uniting the centers of axes 8 and 9 causes the oblique displacement of the frame 2 upwards, so that the knives this frame which are arranged according to the mixed line 15, lie in a plane oblique to that in which they are located when frame 2 is at its low position.
  • eccentric 4 which controls the frame 2 is offset 180 ° from that which controls the second frame, not shown, so that these two organs move alternately in reverse directions in the known manner.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Rehabilitation Tools (AREA)
  • Automatic Assembly (AREA)

Description

On sait que dans les dispositifs de formation de la foule d'un métier à tisser, on dispose de crochets qui sont élevés et abaissés au moyen de deux cadres portant des couteaux d'actionnement desdits crochets et qu'on appelle dans le domaine considéré des cadres de griffes.We know that in the training devices of the crowd of a loom, we have hooks which are raised and lowered by means of two frames carrying knives for actuating said hooks and which are called in the field considered claw frames.

Les perfectionnements qui font l'objet de la présente invention s'appliquent plus spécialement, bien que non exclusivement, à un mécanisme de commande des cadres de griffes d'un dispositif de formation de la foule pour un métier à ruban.The improvements which are the subject of the present invention apply more specifically, well that not exclusively, to a control mechanism claw frames of a training device from the crowd for a ribbon loom.

Un mécanisme de commande du mouvement de va et vient des deux cadres de griffes d'un métier à tisser est connu, par exemple, du document DE-C-899 929 ainsi que CH-A- 433 139.A movement control mechanism back and forth from two claw frames from one trade to weaving is known, for example, from document DE-C-899 929 as well as CH-A- 433 139.

Un dispositif de formation de la foule pour un métier à ruban doit présenter un encombrement le plus faible possible en longueur de manière à diminuer l'encombrement général et les masses en mouvement.A crowd training system for a trade tape must have the most space small possible in length so as to decrease overall dimensions and moving masses.

A cet effet, le mécanisme de commande suivant l'invention comprend de chaque côté de son bâti, au moins un ensemble composé d'une part un premier levier articulé à ce bâti par l'une de ses extrémités et à l'un des cadres de griffes par son extrémité opposée, tandis que ledit levier est associé à une commande à mouvement alternatif et d'autre part un second levier dont les extrémités sont articulées respectivement audit cadre de griffes et au bâti afin que ce dernier, les deux leviers et le cadre constituent un parallélogramme déformable irrégulier, afin de communiquer à celui-ci un mouvement tel qu'en position haute il se trouve orienté obliquement par rapport à sa position basse. La distance séparant les axes d'articulation des deux leviers au bâti peut être supérieure à l'écartement entre leurs axes d'articulation au cadre.To this end, the following control mechanism the invention comprises on each side of its frame, at minus a set composed on the one hand a first lever articulated to this frame by one of its ends and to one of the claw frames by its opposite end, while said lever is associated with a command reciprocating and secondly a second lever whose ends are articulated respectively said claw frame and to the frame so that the latter, the two levers and the frame constitute a parallelogram irregular deformable, in order to communicate to it a movement such that in the high position it is oriented obliquely from its low position. The distance between the axes of articulation of the two levers to the frame can be greater at the spacing between their axes of articulation to the frame.

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 :

  • La figure unique du dessin illustre en élévation un dispositif de formation de la foule d'un métier à tisser, comportant un mécanisme de commande des cadres de griffes établi suivant l'invention.
  • On a illustré sur cette figure, un dispositif de formation de la foule d'un métier à tisser réalisé sous la forme d'une mécanique d'armure du type Jacquard comprenant un bâti 1 à l'intérieur duquel se déplacent deux cadres de griffes 2 dont un seul a été représenté pour simplifier le dessin. Chacun des cadres de griffes comporte une multiplicité de couteaux, non représentés, destinés à coopérer avec des crochets associés aux lisses qui commandent les différentes arcades. Etant donné qu'un tel dispositif de formation de la foule est bien connu dans la pratique, il n'est pas utile de le décrire plus en détail.
    • 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:
  • The single figure of the drawing illustrates in elevation a device for forming the crowd of a loom, comprising a mechanism for controlling the claw frames established according to the invention.
  • Is illustrated in this figure, a device for training the crowd of a loom made in the form of a weaving mechanism of the Jacquard type comprising a frame 1 inside which move two claw frames 2 only one of which has been shown to simplify the drawing. Each of the claw frames comprises a multiplicity of knives, not shown, intended to cooperate with hooks associated with the healds which control the various arches. Since such a crowd training device is well known in practice, it is not worth describing it in more detail.

    • Conformément à l'invention, le mécanisme de commande de chacun des cadres de griffes est disposé de part et d'autre du bâti 1, de telle sorte que chaque cadre de griffes se trouve en porte-à-faux par rapport à son mécanisme de commande. Cette disposition est rendue possible par le fait que la largeur du bâti 1 est faible lorsqu'on a affaire à des mécaniques destinées à la fabrication de rubans étroits sur un métier à tisser.According to the invention, the control of each of the claw frames is arranged on either side of the frame 1, so that each frame of claws is cantilevered by compared to its control mechanism. This provision is made possible by the fact that the width of frame 1 is weak when dealing with mechanics intended for the manufacture of narrow ribbons on a loom.

    Le bâti 1 est traversé par un arbre de commande 3 tournant en synchronisme avec celui de commande du métier. Cet arbre dépasse de chaque côté du bâti pour porter un excentrique 4. Chaque excentrique constitue un maneton autour duquel est montée à rotation la tête d'une bielle 5 dont le pied est articulé sur un axe 6 solidaire du sommet d'un levier 7 de forme générale triangulaire. L'une des extrémités du levier 7 est articulée par rapport au bâti 1 autour d'un axe 8, tandis que son extrémité opposée est articulée au cadre 2 par l'intermédiaire d'un axe 9. Le cadre 2 est encore relié au bâti par un second levier 10 dont l'axe d'articulation 11 sur ce levier se trouve à une distance d en dessous de l'axe d'articulation 9 du levier 7 et qui est différente de celle D séparant l'axe 8 de l'axe 12 de pivotement du levier 10 par rapport au bâti 1. L'ensemble des deux leviers 7 et 10 constitue par conséquent un parallélogramme déformable irrégulier.The frame 1 is crossed by a control shaft 3 rotating in synchronism with the control one of career. This tree protrudes on each side of the frame to carry an eccentric 4. Each eccentric constitutes a crank pin around which is rotatably mounted the head of a connecting rod 5 whose foot is articulated on an axis 6 integral with the top of a lever 7 of shape general triangular. One end of the lever 7 is articulated with respect to the frame 1 around an axis 8, while its opposite end is articulated to the frame 2 via an axis 9. Frame 2 is still connected to the frame by a second lever 10 whose axis hinge 11 on this lever is at a distance d below the hinge pin 9 of the lever 7 and which is different from that D separating the axis 8 from the axis 12 for pivoting the lever 10 relative to the frame 1. The set of two levers 7 and 10 constitutes by therefore an irregular deformable parallelogram.

    Lors de la rotation de l'arbre 3, la bielle 5 provoque un pivotement du levier 7 autour de l'axe 8. Du fait de la présence du levier 10, le cadre 2 se déplace donc de telle manière qu'en position haute, illustrée en traits continus, il se trouve orienté obliquement par rapport à sa position basse montrée en traits discontinus.During the rotation of the shaft 3, the connecting rod 5 causes a pivoting of the lever 7 around the axis 8. Because the presence of the lever 10, the frame 2 moves so in such a way that in the high position, illustrated in solid lines, it is oriented obliquely relative to its low position shown in broken lines.

    Le débattement angulaire a du levier 7, illustré par les traits mixtes 13, 14 unissant les centres des axes 8 et 9, provoque le déplacement oblique du cadre 2 vers le haut, de telle sorte que les couteaux de ce cadre qui sont disposés suivant le trait mixte 15, se trouvent dans un plan oblique par rapport à celui dans lequel ils sont situés lorsque le cadre 2 est à sa position basse. On obtient ainsi une foule oblique qui est souhaitée à la manière connue pour faciliter le passage des duites.The angular movement has lever 7, illustrated by the mixed lines 13, 14 uniting the centers of axes 8 and 9, causes the oblique displacement of the frame 2 upwards, so that the knives this frame which are arranged according to the mixed line 15, lie in a plane oblique to that in which they are located when frame 2 is at its low position. We thus obtain an oblique crowd which is desired in the known manner to facilitate the passage of picks.

    Il va de soi que l'excentrique 4 qui commande le cadre 2 se trouve décalé à 180° par rapport à celui qui commande le second cadre, non représenté, de manière que ces deux organes se déplacent alternativement en sens inverses à la manière connue.It goes without saying that the eccentric 4 which controls the frame 2 is offset 180 ° from that which controls the second frame, not shown, so that these two organs move alternately in reverse directions in the known manner.

    On observe qu'il est possible de prévoir de faire varier les distances d et D de manière à changer l'obliquité de la foule.We observe that it is possible to plan to do vary the distances d and D so as to change the obliquity a crowd.

    Claims (2)

    1. Mechanism for controlling the to-and-fro movement of the two knife boxes of a shed-forming device of a Jacquard-type weaving loom, comprising, on each side of its bed (1), at least one assembly composed, on the one hand, of a first lever (7) which is articulated to this bed by one of its ends and to one of the boxes by its opposite end, whereas the said lever (7) is associated with a control (3,4,5) with reciprocating movement and, on the other hand, with a second lever (10) the ends of which are articulated respectively to the said box (2) and to the bed (1), so that the latter, the two levers (7,10) and the box (2) constitute a deformable irregular parallelogram so as to impart to the latter a movement such that in the high position it points obliquely by comparison with its low position.
    2. Mechanism according to Claim 1, characterized in that the distance (D) separating the axes (8,12) by which the two levers (7,10) are articulated to the bed (1) is different from the separation (d) between the axes (9,11) by which they are articulated to the box (2).
    EP91420059A 1990-02-22 1991-02-20 Controlling mechanism for the movement of the needle frame of a shedding device Expired - Lifetime EP0443969B2 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9002466 1990-02-22
    FR9002466A FR2658539B1 (en) 1990-02-22 1990-02-22 MECHANISM FOR CONTROLLING THE MOVEMENT OF THE CLAW FRAMES OF A CROWD FORMING DEVICE.

    Publications (3)

    Publication Number Publication Date
    EP0443969A1 EP0443969A1 (en) 1991-08-28
    EP0443969B1 EP0443969B1 (en) 1994-07-06
    EP0443969B2 true EP0443969B2 (en) 2001-10-10

    Family

    ID=9394202

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP91420059A Expired - Lifetime EP0443969B2 (en) 1990-02-22 1991-02-20 Controlling mechanism for the movement of the needle frame of a shedding device

    Country Status (6)

    Country Link
    US (1) US5103873B2 (en)
    EP (1) EP0443969B2 (en)
    JP (1) JP2609372B2 (en)
    DE (1) DE69102716T3 (en)
    ES (1) ES2059091T5 (en)
    FR (1) FR2658539B1 (en)

    Families Citing this family (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB9114077D0 (en) * 1991-06-28 1991-08-14 Bonas Machine Co Jacquard mechanism
    FR2717189B1 (en) * 1994-03-10 1996-07-19 Staubli Verdol Back and forth movement control mechanism of the claw frames of an armor mechanic.
    FR2720414B1 (en) * 1994-05-05 1996-07-19 Staubli Verdol Control mechanism for the reciprocating movement of claw frames with rod-crank systems.
    FR2736939B1 (en) * 1995-07-18 1997-09-05 Staubli Sa Ets MECHANICAL JACQUARD ACTUATED BY COAXIAL SHAFTS
    GB9517346D0 (en) * 1995-08-24 1995-10-25 Bonas Machine Co Jacquard mechanism
    BE1016559A4 (en) * 2005-03-21 2007-01-09 Wiele Michel Van De Nv JACQUARD DEVICE.

    Family Cites Families (10)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE446333C (en) * 1924-11-11 1927-06-28 Rueti Ag Maschf Double stroke jacquard machine for looms
    US3096792A (en) * 1960-04-19 1963-07-09 Strach Lothar Jacquard machines
    CH433139A (en) * 1963-07-10 1967-03-31 Kenk Erhard Double lifting jacquard machine
    DE1535220B1 (en) * 1965-03-10 1970-12-23 Grosse Webereimaschinen Gmbh Shed forming device for double-stroke jacquard machines
    FR1476526A (en) * 1965-03-31 1967-04-14 Webstuhlbau Karl Marx Stadt Jacquard loom with forced movement
    FR1523252A (en) * 1967-02-28 1968-05-03 Mecaniques Verdol Soc D Double-lift armor mechanics refinements
    CH586768A5 (en) * 1975-01-31 1977-04-15 Sulzer Ag
    FR2403407A1 (en) * 1977-09-16 1979-04-13 Verdol Sa IMPROVEMENTS TO DEVICES INTENDED TO ALLOW THE OPENING OF THE CHAIN THREADS OF A Loom
    JPS57133999A (en) * 1981-02-13 1982-08-18 Japan National Railway Manufacture of lock bolt cement capsule
    DE3721932A1 (en) * 1987-07-02 1989-01-19 Grosse Webereimaschinen Gmbh DOUBLE LIFT OPEN-PACK JACQUARD MACHINE

    Also Published As

    Publication number Publication date
    US5103873B2 (en) 1995-11-14
    DE69102716T2 (en) 1994-10-20
    US5103873A (en) 1992-04-14
    JPH04214435A (en) 1992-08-05
    EP0443969B1 (en) 1994-07-06
    FR2658539A1 (en) 1991-08-23
    US5103873B1 (en) 1994-07-05
    FR2658539B1 (en) 1992-06-05
    DE69102716T3 (en) 2002-05-08
    ES2059091T5 (en) 2001-12-16
    ES2059091T3 (en) 1994-11-01
    EP0443969A1 (en) 1991-08-28
    DE69102716D1 (en) 1994-08-11
    JP2609372B2 (en) 1997-05-14

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