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EP0619390B1 - Jacquard mechanism with different lifts - Google Patents

Jacquard mechanism with different lifts Download PDF

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Publication number
EP0619390B1
EP0619390B1 EP94420111A EP94420111A EP0619390B1 EP 0619390 B1 EP0619390 B1 EP 0619390B1 EP 94420111 A EP94420111 A EP 94420111A EP 94420111 A EP94420111 A EP 94420111A EP 0619390 B1 EP0619390 B1 EP 0619390B1
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EP
European Patent Office
Prior art keywords
drums
hooks
driven
longitudinal
mechanism 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.)
Expired - Lifetime
Application number
EP94420111A
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German (de)
French (fr)
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EP0619390A1 (en
Inventor
Pierre Bourgeaux
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Staubli Faverges SCA
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Staubli Faverges SCA
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Publication of EP0619390A1 publication Critical patent/EP0619390A1/en
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    • 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

  • the present invention intends to remedy, and this by proposing a mechanism of the general type described in the document FR-A-2677380 cited above, but in which the funicular organs which carry the knives for controlling the hooks actuation are animated by a race which decreases parallel to the plane of movement of the warp threads.
  • the JACQUARD mechanism according to the invention is defined in claim 1.
  • the reciprocating drums which drive the funicular organs supporting the control knives are set at diameters which are decreasing, while the alternating rotation of these drums is carried out using the same longitudinal member which is driven by an oscillating movement and which is linked to each of the drums to be driven.
  • FIG. 1 shows in perspective the general arrangement of a mechanism established in accordance with the invention.
  • Fig. 2 is a view similar to FIG. 1, the fixed frame having been removed from the representation in order to make the drive device appear better.
  • the mechanical frame shown in fig. 1 comprises a lower base 1 made integral with two vertical flanges 2, oriented parallel to one another. Each flange 2 is associated with an upper cheek 3 which extends parallel to the envisaged flange and which is fixed to the latter by means of transverse connecting rods 4. It is between the two flanges 2 that the modules 5 for actuating with the aid of movable hooks 5a provided on opposite sides of said modules, arcades for the vertical control of the warp son.
  • These modules 5, advantageously of the type described in document FR-A-2586432 (STAUBLI-VERDOL), are arranged side by side in a series of parallel rows oriented transversely to the axis of the flanges 2.
  • each connecting rod 4 which is between the opposite faces of a flange 2 and its cheek 3 is machined so as to form a support for two drive drums 6, arranged side by side, the mechanics thus being provided with two longitudinal series of sets or pairs of drums 6.
  • each drum 6 are moored, using a clamp such as 6 a , the ends of a funicular member constituted by a belt 7 which is returned by pulleys 8 to wind around the periphery of the drum and to define two vertical strands, the aforementioned pulleys being mounted cantilevered against the outer face of the flange 2 concerned so as to be in line with the envisaged drum.
  • the diameters of the different drums 6 of the mechanics decrease from one end to the other of the latter, in the sense that the two inner drums of the first row of modules have a diameter slightly larger than that of the two outer drums, themselves set at a larger diameter than the two inner drums corresponding to the second row, and so on up to the drums 6 which are mounted at the rear end of the mechanics as as shown in fig. 1 and 2.
  • the oscillating drive of the drums 6 is operated using two longitudinal connecting rods 10 each of which is housed in the space defined between each flange 2 and its cheek 3, c ' that is to say between the two drums 6 mounted on each of the assembly rods 4.
  • Each connecting rod 10 is coupled at 11 to the drums of each of the sets of drums, the radial distance between each rod 4 and the coupling point 11 being identical for all the drums 6, as well as the angle of inclination of the line 11-4.
  • each of the two sets of drums 6 with a larger diameter is articulated at 12 the end of a vertical connecting rod 13 whose lower end is provided with a ring engaged on an eccentric 14.
  • the two eccentrics 14 are wedged on the same shaft 15, driven in a continuous rotational movement by an appropriate motor, not shown.
  • the hooks 5 a can in fact be mounted in any suitable manner.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Toys (AREA)
  • Looms (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)

Description

On sait que pour la réalisation de noms, dessins ou autres motifs informatifs ou décoratifs sur les lisières des tissus en cours de tissage, on a proposé des petites mécaniques JACQUARD (parfois désignées sous le nom de "jacquarettes") qui comportent un nombre réduit de crochets mobiles pour la commande des arcades d'un harnais de volume restreint.It is known that for the production of names, drawings or other informative or decorative patterns on the edges of the fabrics being woven, small JACQUARD machines have been proposed (sometimes referred to as "jacquarettes") which include a reduced number of movable hooks for controlling the arches of a harness of limited volume.

On pourra se référer avec avantage au document FR-A-2677380 (STAUBLI) qui montre l'agencement d'une mécanique de ce type, dans laquelle la commande des crochets d'actionnement d'une même rangée est assurée à l'aide de deux couteaux fixés sur un organe funiculaire animé d'un mouvement alternatif, lequel organe est renvoyé par des poulies disposées de manière à déterminer des brins parallèles se déplaçant en opposition pour former supports pour les couteaux précités.We can refer with advantage to document FR-A-2677380 (STAUBLI) which shows the arrangement of a mechanism of this type, in which the control of the actuating hooks of the same row is ensured using two knives fixed to a funicular organ driven by an alternating movement, which organ is returned by pulleys arranged so as to determine parallel strands moving in opposition to form supports for the aforementioned knives.

Pour le tissage de lisières, c'est-à-dire d'articles qui impliquent un harnais de faible profondeur, on peut sans inconvénient majeur adopter une course unique pour tous les crochets. Par contre, il n'en va plus de même lorsqu'on désire réaliser des rubans ou autres articles dont le tissage nécessite un nombre d'arcades obligeant le recours impératif à une foule oblique, impliquant des courses différenciées pour les différents crochets de la mécanique.For weaving selvedges, that is to say articles which involve a shallow harness, it is possible without major drawback to adopt a single stroke for all the hooks. On the other hand, it is no longer the same when one wishes to make ribbons or other articles whose weaving requires a number of arches requiring the imperative use of an oblique crowd, implying different races for the different hooks of the mechanics .

En pareil cas, les petites mécaniques ou "jacquarettes" usuelles ne peuvent évidemment convenir et l'on doit recourir aux mécaniques conventionnelles comportant un très grand nombre de crochets.In such a case, the usual small mechanics or "jacquarettes" are obviously not suitable and one must resort to conventional mechanics comprising a very large number of hooks.

C'est à cet inconvénient qu'entend remédier la présente invention, et ce en proposant une mécanique du type général décrit au document FR-A-2677380 précité, mais dans laquelle les organes funiculaires qui portent les couteaux pour la commande des crochets d'actionnement sont animés d'une course qui va en décroissant parallèlement au plan de déplacement des fils de chaîne.It is to this drawback that the present invention intends to remedy, and this by proposing a mechanism of the general type described in the document FR-A-2677380 cited above, but in which the funicular organs which carry the knives for controlling the hooks actuation are animated by a race which decreases parallel to the plane of movement of the warp threads.

La mécanique JACQUARD suivant l'invention est définie à la revendication 1.The JACQUARD mechanism according to the invention is defined in claim 1.

En fait, conformément à l'invention, les tambours à mouvement alternatif qui assurent l'entraînement des organes funiculaires supportant les couteaux de commande sont établis à des diamètres qui vont en décroissant, tandis que la mise en rotation alternée de ces tambours est opérée à l'aide d'un même organe longitudinal qui est animé d'un mouvement oscillant et qui est lié à chacun des tambours à entraîner.In fact, in accordance with the invention, the reciprocating drums which drive the funicular organs supporting the control knives are set at diameters which are decreasing, while the alternating rotation of these drums is carried out using the same longitudinal member which is driven by an oscillating movement and which is linked to each of the drums to be driven.

D'autres caractéristiques selon l'invention sont revendiquées dans les revendications 2-4.Other features according to the invention are claimed in claims 2-4.

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 :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 montre en perspective l'agencement général d'une mécanique établie conformément à l'invention.Fig. 1 shows in perspective the general arrangement of a mechanism established in accordance with the invention.

Fig. 2 est une vue analogue à fig. 1, le bâti fixe ayant été supprimé de la représentation afin de mieux faire apparaître le dispositif d'entraînement.Fig. 2 is a view similar to FIG. 1, the fixed frame having been removed from the representation in order to make the drive device appear better.

Le bâti de la mécanique représentée en fig. 1 comprend un socle inférieur 1 rendu solidaire de deux flasques verticaux 2, orientés parallèlement l'un à l'autre. A chaque flasque 2 est associée une joue supérieure 3 qui s'étend parallèlement au flasque envisagé et qui est fixée à celui-ci à l'aide de tiges transversales d'assemblage 4. C'est entre les deux flasques 2 que sont montés les modules 5 pour l'actionnement, à l'aide de crochets mobiles 5a prévus sur les faces opposées desdits modules, des arcades destinées à la commande verticale des fils de chaîne. Ces modules 5, avantageusement du type décrit au document FR-A-2586432 (STAUBLI-VERDOL), sont disposés côte à côte suivant une série de rangées parallèles orientées transversalement à l'axe des flasques 2.The mechanical frame shown in fig. 1 comprises a lower base 1 made integral with two vertical flanges 2, oriented parallel to one another. Each flange 2 is associated with an upper cheek 3 which extends parallel to the envisaged flange and which is fixed to the latter by means of transverse connecting rods 4. It is between the two flanges 2 that the modules 5 for actuating with the aid of movable hooks 5a provided on opposite sides of said modules, arcades for the vertical control of the warp son. These modules 5, advantageously of the type described in document FR-A-2586432 (STAUBLI-VERDOL), are arranged side by side in a series of parallel rows oriented transversely to the axis of the flanges 2.

La partie de chaque tige d'assemblage 4 qui est comprise entre les faces en vis-à-vis d'un flasque 2 et de sa joue 3 est usinée afin de former support pour deux tambours d'entraînement 6, disposés côte à côte, la mécanique étant ainsi dotée de deux séries longitudinales de jeux ou paires de tambours 6.The part of each connecting rod 4 which is between the opposite faces of a flange 2 and its cheek 3 is machined so as to form a support for two drive drums 6, arranged side by side, the mechanics thus being provided with two longitudinal series of sets or pairs of drums 6.

Sur chaque tambour 6 viennent s'amarrer, à l'aide d'une pince telle que 6a, les extrémités d'un organe funiculaire constitué par une courroie 7 qui est renvoyée par des poulies 8 pour s'enrouler autour de la périphérie du tambour et pour définir deux brins verticaux, les poulies précitées étant montées en porte-à-faux contre la face extérieure du flasque 2 concerné de façon à se trouver à l'aplomb du tambour envisagé.On each drum 6 are moored, using a clamp such as 6 a , the ends of a funicular member constituted by a belt 7 which is returned by pulleys 8 to wind around the periphery of the drum and to define two vertical strands, the aforementioned pulleys being mounted cantilevered against the outer face of the flange 2 concerned so as to be in line with the envisaged drum.

Comme dans le document FR-A-2677380, sur chacun des brins verticaux des deux courroies 7 qui coopèrent avec les deux tambours extérieurs, respectivement intérieurs, qui se font face pour correspondre aux mêmes rangées de modules 5, sont fixés deux couteaux horizontaux 9 destinés à coopérer avec les crochets en saillie 5a des modules précités ; ces couteaux 9 sont engagés dans des lumières verticales 2a des flaques 2. On conçoit qu'il suffise d'impartir aux tambours 6 un mouvement alternatif de rotation autour des tiges ou axes 4 pour que les couteaux 9 soient eux-mêmes animés d'un mouvement vertical alternatif propre à assurer la commande des crochets 5a de l'ensemble des modules 5 de la mécanique.As in the document FR-A-2677380, on each of the vertical strands of the two belts 7 which cooperate with the two exterior drums, respectively interior, which face each other to correspond to the same rows of modules 5, are fixed two horizontal knives 9 intended to cooperate with the projecting hooks 5 has the aforementioned modules; these knives 9 are engaged in vertical lights 2 has puddles 2. It is understood that it suffices to impart to the drums 6 an alternating movement of rotation around the rods or axes 4 so that the knives 9 are themselves driven by a reciprocating vertical movement suitable for controlling the hooks 5 a of all of the mechanical modules 5.

Il convient ici d'observer que les diamètres des différents tambours 6 de la mécanique vont en décroissant d'une extrémité à l'autre de celle-ci, en ce sens que les deux tambours intérieurs de la première rangée de modules présentent un diamètre légèrement plus grand que celui des deux tambours extérieurs, eux-mêmes établis à un plus grand diamètre que les deux tambours intérieurs correspondant à la deuxième rangée, et ainsi de suite jusqu'aux tambours 6 qui sont montés à l'extrémité arrière de la mécanique telle que représentée en fig. 1 et 2.It should be observed here that the diameters of the different drums 6 of the mechanics decrease from one end to the other of the latter, in the sense that the two inner drums of the first row of modules have a diameter slightly larger than that of the two outer drums, themselves set at a larger diameter than the two inner drums corresponding to the second row, and so on up to the drums 6 which are mounted at the rear end of the mechanics as as shown in fig. 1 and 2.

On comprend dans ces conditions que l'amplitude de la course verticale des couteaux 9 va elle-même en diminuant d'une extrémité à l'autre de la mécanique, et ce même dans le cas où les tambours 6 sont tous animés d'un déplacement angulaire de même amplitude. On obtient en conséquence la formation de la foule oblique recherchée, propre à permettre la réalisation d'articles du genre des rubans et autres.It is understood under these conditions that the amplitude of the vertical stroke of the knives 9 itself decreases from one end to the other of the mechanics, even if the drums 6 are all driven by angular displacement of the same amplitude. The result is the formation of the desired oblique crowd, suitable for enabling the production of articles such as ribbons and the like.

Conformément à une autre caractéristique remarquable de la mécanique représentée, l'entraînement oscillant des tambours 6 est opéré à l'aide de deux bielles longitudinales 10 dont chacune vient se loger dans l'espace défini entre chaque flasque 2 et sa joue 3, c'est-à-dire entre les deux tambours 6 montés sur chacune des tiges d'assemblage 4. Chaque bielle 10 est attelée en 11 aux tambours de chacun des jeux de tambours, la distance radiale comprise entre chaque tige 4 et le point d'attelage 11 étant identique pour tous les tambours 6, ainsi que l'angle d'inclinaison de la ligne 11-4.In accordance with another remarkable characteristic of the mechanics shown, the oscillating drive of the drums 6 is operated using two longitudinal connecting rods 10 each of which is housed in the space defined between each flange 2 and its cheek 3, c ' that is to say between the two drums 6 mounted on each of the assembly rods 4. Each connecting rod 10 is coupled at 11 to the drums of each of the sets of drums, the radial distance between each rod 4 and the coupling point 11 being identical for all the drums 6, as well as the angle of inclination of the line 11-4.

Sur chacun des deux jeux de tambours 6 à plus grand diamètre s'articule en 12 l'extrémité d'une bielle verticale 13 dont l'extrémité inférieure est pourvue d'une bague engagée sur un excentrique 14. Les deux excentriques 14 sont calés sur un même arbre 15, animé d'un mouvement de rotation continu par un moteur approprié, non représenté.On each of the two sets of drums 6 with a larger diameter is articulated at 12 the end of a vertical connecting rod 13 whose lower end is provided with a ring engaged on an eccentric 14. The two eccentrics 14 are wedged on the same shaft 15, driven in a continuous rotational movement by an appropriate motor, not shown.

On conçoit qu'un résultat équivalent pourrait être obtenu en remplaçant les bielles 10 par deux crémaillères coopérant avec des pignons dentés solidaires des tambours 6 de chaque jeu, et en animant lesdites crémaillères d'un mouvement longitudinal alternatif, par exemple à l'aide d'un vérin ou autre engin moteur approprié.It is understood that an equivalent result could be obtained by replacing the connecting rods 10 with two racks cooperating with toothed pinions integral with the drums 6 of each set, and by animating said racks with an alternating longitudinal movement, for example using '' a cylinder or other suitable motor vehicle

On conçoit en particulier que le groupement, sous la forme de modules, des crochets d'actionnement des arcades n'est pas indispensable, les crochets 5a pouvant en fait être montés de toute manière appropriée.It is understood in particular that the grouping, in the form of modules, of the actuating hooks of the arches is not essential, the hooks 5 a can in fact be mounted in any suitable manner.

Claims (4)

  1. A JACQUARD mechanism, of the type in which the blades (9) which are intended to actuate the rows of hooks (5a) associated with the harnesses are borne by the parallel strands of a series of funicular elements or belts (7) driven by drums (6) moved in an alternating movement, characterised in that the drums (6) are constructed with diameters which decrease from one end of the mechanism to the other in order to impart to the hooks (5a) differentiated strokes which enable an oblique shed to be obtained.
  2. A mechanism according to Claim 1, characterised in that the alternate rotation of the drums (6) is effected by means of one and the same longitudinal element (10) which is driven in an oscillating movement and is connected to each of the drums to be driven.
  3. A mechanism according to Claim 2, characterised in that the longitudinal element is formed by a connecting-rod (10) attached (at 11) to each of the corresponding drums, and associated with a drive mechanism of the connecting-rod-(13)-and-eccentric (14) type.
  4. A mechanism according to any one of Claims 2 to 3, characterised in that the drums (6) are arranged in pairs to form two symmetrical longitudinal rows, one longitudinal drive element (10) being accommodated between the two drums of the pairs of one and the same row.
EP94420111A 1993-04-07 1994-04-06 Jacquard mechanism with different lifts Expired - Lifetime EP0619390B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9304347A FR2703697B1 (en) 1993-04-07 1993-04-07 Jacquard mechanical with differentiated strokes.
FR9304347 1993-04-07

Publications (2)

Publication Number Publication Date
EP0619390A1 EP0619390A1 (en) 1994-10-12
EP0619390B1 true EP0619390B1 (en) 1997-06-25

Family

ID=9446025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94420111A Expired - Lifetime EP0619390B1 (en) 1993-04-07 1994-04-06 Jacquard mechanism with different lifts

Country Status (6)

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US (1) US5435353A (en)
EP (1) EP0619390B1 (en)
JP (1) JP2847208B2 (en)
DE (1) DE69403929T2 (en)
FR (1) FR2703697B1 (en)
TW (1) TW239171B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2724948B1 (en) * 1994-09-27 1996-12-27 Staubli Sa Ets BELT TYPE JACQUARD MECHANISM
FR2826671B1 (en) * 2001-06-29 2003-09-12 Staubli Lyon DEVICE FOR FORMING A CROWD ON A JACQUARD-TYPE WEAVING MATERIAL
FR2900666B1 (en) * 2006-05-03 2008-06-20 Staubli Lyon Soc Par Actions S CROWN FORMING MECHANISM, WEAVING EQUIPPED WITH SUCH A MECHANISM AND METHOD OF SELECTING MOBILE HOOKS OF SUCH A MECHANISM
CN102277673B (en) * 2011-07-12 2014-03-26 浙江奇汇电子提花机有限公司 Transmission mechanism of double-gearbox electronic jacquard machine
KR101434043B1 (en) 2012-11-09 2014-08-26 박용우 Shedding device for jacquard loom

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR605701A (en) * 1924-11-11 1926-06-01 Rueti Ag Maschf Double stroke jacquard machine
GB519021A (en) * 1938-09-06 1940-03-14 Boucher & Company Ltd Improved jacquard mechanism for looms
FR2586432B1 (en) * 1985-08-23 1987-11-13 Staubli Verdol DEVICE FOR FORMING A CROWD IN A WEAVING MATERIAL
DE3721932A1 (en) * 1987-07-02 1989-01-19 Grosse Webereimaschinen Gmbh DOUBLE LIFT OPEN-PACK JACQUARD MACHINE
JPH0473237A (en) * 1990-07-09 1992-03-09 Maruhachi Tekkosho:Yugen Shedding motion in jacquard machine
DE4027575C1 (en) * 1990-08-31 1992-02-06 Wolfgang 5600 Wuppertal De Herold Skew shed for loom - has lifting knives to carry sinkers for controlling needles, permitting high working speed
FR2677380B3 (en) * 1991-06-10 1993-05-07 Staubli Ets MECHANISM FOR CONTROLLING THE HOOKS OF A MOBILE FORMING DEVICE.

Also Published As

Publication number Publication date
EP0619390A1 (en) 1994-10-12
FR2703697A1 (en) 1994-10-14
TW239171B (en) 1995-01-21
JP2847208B2 (en) 1999-01-13
US5435353A (en) 1995-07-25
DE69403929D1 (en) 1997-07-31
FR2703697B1 (en) 1995-06-23
JPH0748748A (en) 1995-02-21
DE69403929T2 (en) 1997-12-18

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