EP0488914A1 - Driving system for the knife boxes of a dobby - Google Patents

Driving system for the knife boxes of a dobby Download PDF

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Publication number
EP0488914A1
EP0488914A1 EP91420419A EP91420419A EP0488914A1 EP 0488914 A1 EP0488914 A1 EP 0488914A1 EP 91420419 A EP91420419 A EP 91420419A EP 91420419 A EP91420419 A EP 91420419A EP 0488914 A1 EP0488914 A1 EP 0488914A1
Authority
EP
European Patent Office
Prior art keywords
lever
connecting rods
chassis
articulated
dobby
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Withdrawn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
EP91420419A
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German (de)
French (fr)
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
Original Assignee
Staeubli Verdol SA
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 Staeubli Verdol SA filed Critical Staeubli Verdol SA
Publication of EP0488914A1 publication Critical patent/EP0488914A1/en
Withdrawn legal-status Critical Current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
    • 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
    • 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

Definitions

  • the present invention relates to improvements made to the control of the back-and-forth movement of the frames of a device for training the crowd of a weaving loom, in particular an armor mechanism.
  • the present invention relates to such a control assembly which responds better than so far to the various requirements of the practice and which is among other things simple and robust construction while being able to operate at high speed thanks to its low inertia.
  • the chassis of the device according to the invention which is crossed by a shaft whose ends projecting beyond the chassis are each associated with the heads of two connecting rods by means of an eccentric, is characterized in that the feet of these connecting rods are articulated to the rod of a rocking lever in T whose branches are associated with pivoting one with a short lever and the other with a long lever also attached respectively to the upper frame and the lower frame.
  • Fig. 1 is an elevational view of an armor mechanism comprising application of the improvements according to the invention.
  • Fig. 2 schematically illustrates the various elements of the control assembly according to the invention.
  • FIG. 1 Illustrated in FIG. 1 is the chassis 1 of an armor mechanism resting on two supports 2 and 3 placed above a weaving loom which is not shown.
  • a shaft 4 suitably driven in synchronism with that of the loom passes right through the frame 1 and protrudes on each side thereof.
  • two eccentrics 5, 6 On the parts protruding on either side of the chassis, two eccentrics 5, 6 have been wedged on the shaft 4, each associated with the head of a connecting rod 7, respectively 8.
  • the foot of each connecting rod 7, 8 is respectively associated with the rod of a lever 9, 10, roughly affecting the shape of a T and which are both articulated around a transverse fixed shaft 11.
  • levers 9 and 10 are offset angularly with respect to each other, so that the branches 9 a and 10 a lie substantially in the same horizontal plane, so that levers 12, respectively 13 associated with said branches and which comprise the same length support one of the sides of the upper frame 14 of the chassis 1.
  • the branches 9 b and 10 b of the levers 9 and 10 lie substantially in the same horizontal plane, so that levers 15, 16, of the same length (greater than that of the levers 12, 13) which their are associated by one of their ends, are attached by their other end to the lower frame 17 of the chassis 1.
  • each lever 9, 10 is associated with a short lever 12, 13 and with a long lever 15, 16, respectively.
  • each lever has longitudinal slots not referenced in which are fixed end caps 18, 19, 21, 21 to which the levers 12, 13, 15 and 16 are articulated respectively.
  • the diagram in fig. 2 schematically shows the mounting of the control assembly according to the invention comprising two mechanisms such as that described with reference to FIG. 1 and each located on either side of the chassis.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

The frame of the dobby has passing through it a shaft (4), of which the ends projecting beyond the frame are each associated with the heads of two connecting rods (7, 8) by means of an eccentric (5, 6), whilst their foot is articulated on the rod of a T-shaped rocker lever (9, 10), the branches of which are associated pivotably with a short lever (12, 13) and with a long lever (15, 16) which, moreover, are attached respectively to the upper knife box (14) and to the lower knife box (17). <IMAGE>

Description

La présente invention a trait à des perfectionnements apportés à la commande du mouvement de va-et-vient des cadres d'un dispositif de formation de la foule d'un métier à tisser, notamment d'une mécanique d'armure.The present invention relates to improvements made to the control of the back-and-forth movement of the frames of a device for training the crowd of a weaving loom, in particular an armor mechanism.

La présente invention vise un tel ensemble de commande qui réponde mieux que jusqu'à présent aux divers desiderata de la pratique et qui soit entre autre de construction simple et robuste tout en pouvant fonctionner à cadence élevée grâce à sa faible inertie.The present invention relates to such a control assembly which responds better than so far to the various requirements of the practice and which is among other things simple and robust construction while being able to operate at high speed thanks to its low inertia.

Le châssis du dispositif suivant l'invention qui est traversé par un arbre dont les extrémités dépassant au-delà du châssis sont associées chacune aux têtes de deux bielles par l'intermédiaire d'un excentrique, est caractérisé en ce que les pieds de ces bielles sont articulés à la tige d'un levier basculant en T dont les branches sont associées à pivotement l'une à un levier court et l'autre à un levier long attachés en outre respectivement au cadre supérieur et au cadre inférieur.The chassis of the device according to the invention which is crossed by a shaft whose ends projecting beyond the chassis are each associated with the heads of two connecting rods by means of an eccentric, is characterized in that the feet of these connecting rods are articulated to the rod of a rocking lever in T whose branches are associated with pivoting one with a short lever and the other with a long lever also attached respectively to the upper frame and the lower 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 :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 est une vue en élévation d'une mécanique d'armure comportant application des perfectionnements suivant l'invention.Fig. 1 is an elevational view of an armor mechanism comprising application of the improvements according to the invention.

Fig. 2 illustre schématiquement les différents éléments de l'ensemble de commande suivant l'invention.Fig. 2 schematically illustrates the various elements of the control assembly according to the invention.

On a illustré en fig, 1 le châssis 1 d'une mécanique d'armure reposant sur deux supports 2 et 3 placés au-dessus d'un métier à tisser non représenté. Conformément à l'invention, un arbre 4 convenablement entraîné en synchronisme avec celui du métier à tisser traverse de part en part le châssis 1 et dépasse de chaque côté de celui-ci. Sur les parties dépassant de part et d'autre du châssis, on a calé sur l'arbre 4 deux excentriques 5, 6 associées chacun à la tête d'une bielle 7, respectivement 8. Le pied de chaque bielle 7, 8 est respectivement associé à la tige d'un levier 9, 10, affectant en gros la forme d'un T et qui sont tous les deux articulés autour d'un arbre fixe transversal 11. 0n observe qu'à une position angulaire déterminée de l'arbre 4, les leviers 9 et 10 se trouvent décalés angulairement l'un par rapport à l'autre, de telle sorte que les branches 9a et 10a se trouvent sensiblement dans un même plan horizontal, si bien que des leviers 12, respectivement 13 associés auxdites branches et qui comportent la même longueur soutiennent l'un des côtés du cadre supérieur 14 du châssis 1.Illustrated in FIG. 1 is the chassis 1 of an armor mechanism resting on two supports 2 and 3 placed above a weaving loom which is not shown. According to the invention, a shaft 4 suitably driven in synchronism with that of the loom passes right through the frame 1 and protrudes on each side thereof. On the parts protruding on either side of the chassis, two eccentrics 5, 6 have been wedged on the shaft 4, each associated with the head of a connecting rod 7, respectively 8. The foot of each connecting rod 7, 8 is respectively associated with the rod of a lever 9, 10, roughly affecting the shape of a T and which are both articulated around a transverse fixed shaft 11. It is observed that at a determined angular position of the shaft 4, levers 9 and 10 are offset angularly with respect to each other, so that the branches 9 a and 10 a lie substantially in the same horizontal plane, so that levers 12, respectively 13 associated with said branches and which comprise the same length support one of the sides of the upper frame 14 of the chassis 1.

De manière symétrique, les branches 9b et 10b des leviers 9 et 10 se trouvent sensiblement dans un même plan horizontal, de telle sorte que des leviers 15, 16, de même longueur (supérieure à celle des leviers 12, 13) qui leurs sont associés par l'une de leurs extrémités, sont attachés par leur autre extrémité au cadre inférieur 17 du châssis 1.Symmetrically, the branches 9 b and 10 b of the levers 9 and 10 lie substantially in the same horizontal plane, so that levers 15, 16, of the same length (greater than that of the levers 12, 13) which their are associated by one of their ends, are attached by their other end to the lower frame 17 of the chassis 1.

Autrement dit, chaque levier 9, 10 est associé à un levier court 12, 13 et à un levier long 15, 16, respectivement.In other words, each lever 9, 10 is associated with a short lever 12, 13 and with a long lever 15, 16, respectively.

On observe que les deux ailes de chaque levier comportent des lumières longitudinales non référencées dans lesquelles sont fixés des embouts 18, 19, 21, 21 auxquels sont articulés les leviers 12, 13, 15 et 16 respectivement.It is observed that the two wings of each lever have longitudinal slots not referenced in which are fixed end caps 18, 19, 21, 21 to which the levers 12, 13, 15 and 16 are articulated respectively.

Si les embouts 18 et 19 sont exactement dans le même plan horizontal, le cadre 14 se trouve également horizontal, tandis que le cadre 17 se trouve parallèle à celui 14 si les embout 21 et 21 se trouvent dans un même plan horizontal inférieur à celui contenant les embouts 18 et 19. Si l'on désire obtenir une foule oblique, il suffit de changer la position des embouts dans leur lumière respective afin d'orienter obliquement les cadres 16 et 17 l'un par rapport à l'autre. Le diagramme de fig. 2 montre schématiquement le montage de l'ensemble de commande suivant l'invention comportant deux mécanisme tels que celui décrit en référence à fig. 1 et situés chacun de part et d'autre du châssis.If the end pieces 18 and 19 are in exactly the same horizontal plane, the frame 14 is also horizontal, while the frame 17 is parallel to that 14 if the end pieces 21 and 21 are in the same horizontal plane less than that containing the end pieces 18 and 19. If it is desired to obtain an oblique crowd, it suffices to change the position of the end pieces in their respective lumen in order to orient the frames 16 and 17 obliquely relative to each other. The diagram in fig. 2 schematically shows the mounting of the control assembly according to the invention comprising two mechanisms such as that described with reference to FIG. 1 and each located on either side of the chassis.

On retrouve ainsi de chaque côté du châssis non représenté deux excentriques 5, 6 actionnant deux bielles 7, 8 articulées à deux leviers en T 9, 11. La rotation de l'arbre 4 dans le sens de la flèche F entraîne des déplacements des bielles 7 et 8 en sens opposés, c'est-à-dire suivant les flèches F1 et F2 de telle sorte que les cadres 14 et 17 se déplacent en va-et-vient de manière inverse comme illustré par les flèches F3 et F4 illustrant le déplacement des cadres à partir de leur position la plus rapprochée.There are thus on each side of the chassis not shown two eccentrics 5, 6 actuating two connecting rods 7, 8 articulated with two T-shaped levers 9, 11. The rotation of the shaft 4 in the direction of the arrow F causes displacements of the connecting rods 7 and 8 in opposite directions, that is to say according to the arrows F1 and F2 so that the frames 14 and 17 move back and forth in reverse as illustrated by the arrows F3 and F4 illustrating the moving the frames from their closest position.

On comprend aisément que le nombre d'organes nécessaire au déplacement des cadres étant très réduit, l'inertie de la commande est faible, de telle sorte que l'arbre 4 peut tourner à des vitesses élevées. Ce nombre réduit d'organes entraîne une diminution des jeux généraux qui facilitent la précision du déplacement des cadres 14 et 17.It is easily understood that the number of members required for moving the frames being very small, the inertia of the control is low, so that the shaft 4 can rotate at high speeds. This reduced number of members leads to a reduction in the general clearances which facilitate the precision of the movement of the frames 14 and 17.

Claims (1)

Ensemble de commande du mouvement de va-et-vient des cadres d'un dispositif de formation de la foule d'un métier à tisser, notamment d'une mécanique d'armure, comprenant des mécanismes de bielle et manivelle articulés à des biellettes et des leviers, le châssis dudit dispositif étant traversé par un arbre (4) dont les extrémités dépassant au-delà du châssis sont associées chacune aux têtes de deux bielles (7, 8) par l'intermédiaire d'un excentrique (5, 6) caractérisé en ce que les pieds de ces bielles sont articulés à la tige d'un levier basculant (9, 10) en T dont les branches sont associées à pivotement l'une à un levier court (12, 13) et l'autre à un levier long (15, 16) attachés en outre respectivement au cadre supérieur (14) et au cadre inférieur (17).Control assembly for the back-and-forth movement of the frames of a device for training the crowd of a weaving loom, in particular a weaving mechanism, comprising connecting rod and crank mechanisms articulated with connecting rods and levers, the chassis of said device being traversed by a shaft (4) whose ends projecting beyond the chassis are each associated with the heads of two connecting rods (7, 8) by means of an eccentric (5, 6) characterized in that the feet of these connecting rods are articulated to the rod of a tilting lever (9, 10) in T, the branches of which are pivotally associated, one with a short lever (12, 13) and the other with a long lever (15, 16) further attached respectively to the upper frame (14) and the lower frame (17).
EP91420419A 1990-11-27 1991-11-26 Driving system for the knife boxes of a dobby Withdrawn EP0488914A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9015139A FR2669650B1 (en) 1990-11-27 1990-11-27 MECHANISM FOR CONTROLLING THE FRAMES OF A CROWD FORMING DEVICE.
FR9015139 1990-11-27

Publications (1)

Publication Number Publication Date
EP0488914A1 true EP0488914A1 (en) 1992-06-03

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ID=9402857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420419A Withdrawn EP0488914A1 (en) 1990-11-27 1991-11-26 Driving system for the knife boxes of a dobby

Country Status (4)

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US (1) US5176181A (en)
EP (1) EP0488914A1 (en)
JP (1) JP2904977B2 (en)
FR (1) FR2669650B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025654A1 (en) * 1993-04-26 1994-11-10 Textilma Ag Shedding device for a weaving machine
EP0681042A1 (en) * 1994-05-05 1995-11-08 Staubli-Verdol S.A. Driving system for reciprocating crank driven knife boxes
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
CN102912505A (en) * 2012-10-29 2013-02-06 江苏万工科技集团有限公司 Device with two upper openings and lower opening

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB9715480D0 (en) * 1997-07-23 1997-10-01 Bonas Machine Co Drive mechanism for a griffe frame
BE1013564A3 (en) * 2000-06-16 2002-04-02 Wiele Michel Van De Nv DEVICE FOR KNIVES beams OF THE LEGAL GUIDE IN A Jacquard machine.
FR2854642B1 (en) * 2003-05-06 2005-07-08 Staubli Lyon CROWN FORMING DEVICE AND JACQUARD TYPE WEAVING EQUIPPED WITH SUCH A DEVICE
BE1016559A4 (en) * 2005-03-21 2007-01-09 Wiele Michel Van De Nv JACQUARD DEVICE.
FR2945825B1 (en) * 2009-05-19 2011-06-24 Staubli Lyon CROWN FORMATION DEVICE AND JACQUARD - TYPE WEAVING MACHINE EQUIPPED WITH SUCH A DEVICE.
CN101831743B (en) * 2010-05-05 2011-08-31 汪建兴 Transmission mechanism for griffe of jacquard
CN102071508A (en) * 2011-01-28 2011-05-25 浙江奇汇电子提花机有限公司 Warp extraction transmission mechanism for electronic jacquard machine
CN104480607B (en) * 2015-01-19 2016-03-09 尹黎明 The mounting structure of knitting needle in a kind of jacquard
CN104593926B (en) * 2015-01-19 2016-06-01 海宁市天一纺织有限公司 A kind of jacquard machine
CN104562358B (en) * 2015-01-23 2016-03-09 海宁市天一纺织有限公司 A kind of drive apparatus of jacquard fabric
CN106149175A (en) * 2016-09-24 2016-11-23 青岛升世真机械有限公司 The driving means of weaving machine with water spraying

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1535220B1 (en) * 1965-03-10 1970-12-23 Grosse Webereimaschinen Gmbh Shed forming device for double-stroke jacquard machines
DE8110100U1 (en) * 1981-04-03 1983-10-27 Maschinenfabrik Carl Zangs Ag, 4150 Krefeld RETURN DEVICE FOR JACQUARD MACHINES
FR2528078A1 (en) * 1982-06-07 1983-12-09 Tagliabue Spa
EP0136244A1 (en) * 1983-08-26 1985-04-03 Staubli-Verdol S.A.R.L. Mechanism for the control of the knife boxes of dobbies
EP0297586A2 (en) * 1987-07-02 1989-01-04 Grosse Webereimaschinen GmbH Double-lift open-shed Jacquard machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2246668B2 (en) * 1973-10-05 1976-05-07 Verdol Sa
CH641218A5 (en) * 1979-10-19 1984-02-15 Staeubli Ag UPPER CABLE BETWEEN A DUMPING MACHINE AND THE SHAFTS OF A WEAVING MACHINE.
FR2535742A1 (en) * 1982-11-04 1984-05-11 Verdol Sa ARMOR MECHANICS WITH PERFECTED SELECTION OF HOOKS
BE1004307A3 (en) * 1989-07-14 1992-10-27 Wiele Michel Van De Nv DEVICE FOR HAKENSELEKTIE TO AN ELECTRONIC CONTROLLED jacquard, AND ELECTRONIC CONTROLLED Jacquard OF SUCH DEVICE PROVIDED.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1535220B1 (en) * 1965-03-10 1970-12-23 Grosse Webereimaschinen Gmbh Shed forming device for double-stroke jacquard machines
DE8110100U1 (en) * 1981-04-03 1983-10-27 Maschinenfabrik Carl Zangs Ag, 4150 Krefeld RETURN DEVICE FOR JACQUARD MACHINES
FR2528078A1 (en) * 1982-06-07 1983-12-09 Tagliabue Spa
EP0136244A1 (en) * 1983-08-26 1985-04-03 Staubli-Verdol S.A.R.L. Mechanism for the control of the knife boxes of dobbies
EP0297586A2 (en) * 1987-07-02 1989-01-04 Grosse Webereimaschinen GmbH Double-lift open-shed Jacquard machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025654A1 (en) * 1993-04-26 1994-11-10 Textilma Ag Shedding device for a weaving machine
EP0681042A1 (en) * 1994-05-05 1995-11-08 Staubli-Verdol S.A. Driving system for reciprocating crank driven knife boxes
FR2720414A1 (en) * 1994-05-05 1995-12-01 Staubli Verdol Mechanism for controlling the reciprocating movement of claw frames with rod-crank systems.
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
CN102912505A (en) * 2012-10-29 2013-02-06 江苏万工科技集团有限公司 Device with two upper openings and lower opening
CN102912505B (en) * 2012-10-29 2014-02-19 江苏万工科技集团有限公司 Device with two upper openings and lower opening

Also Published As

Publication number Publication date
US5176181A (en) 1993-01-05
FR2669650A1 (en) 1992-05-29
JP2904977B2 (en) 1999-06-14
JPH04263642A (en) 1992-09-18
FR2669650B1 (en) 1994-04-29

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