EP0704563A1 - Belt-type jacquard machine - Google Patents

Belt-type jacquard machine Download PDF

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Publication number
EP0704563A1
EP0704563A1 EP95420270A EP95420270A EP0704563A1 EP 0704563 A1 EP0704563 A1 EP 0704563A1 EP 95420270 A EP95420270 A EP 95420270A EP 95420270 A EP95420270 A EP 95420270A EP 0704563 A1 EP0704563 A1 EP 0704563A1
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EP
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Prior art keywords
mechanics
motor
shaft
encoder
belts
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EP95420270A
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German (de)
French (fr)
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EP0704563B1 (en
Inventor
Joseph Palau
Jean-Paul Froment
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Staubli Faverges SCA
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Staubli Faverges SCA
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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 relates to Jacquard mechanics for training the crowd on weaving machines and it relates more particularly to those in which the reciprocating hooks which actuate the arches of the usual harness are controlled by knives carried by the parallel strands of '' a series of funicular organs or belts arranged in pairs.
  • the movement is taken from the main shaft of the weaving machine using a first bevel gear connected by a vertical shaft to a second bevel gear provided the height of the mechanics to be driven.
  • the horizontal output shaft of this second reference constitutes the input shaft of the mechanics, on which are generally generally mounted a modulator device capable of conferring on said shaft the desired law of movement for mechanics, a device for research pitch (untwisting) and a brake intended to automatically immobilize the mechanics as soon as the drive stops.
  • the mechanical input shaft must obviously be connected to the drums which provide the alternating drive for each of the knife-carrying belts, and on this point we can refer to what has been described and represented in French Patent N ° 2 703 697 (STAUBLI).
  • the input shaft carries two eccentrics for the control of two vertical connecting rods which actuate themselves two horizontal connecting rods linked to the pairs of drums, these being established at different diameters which are decreasing by one end to end of the mechanics in order to give knives and hooks different strokes specific to obtaining an oblique crowd.
  • the present invention intends to remedy, which essentially consists in driving each of the shafts which carry the drums associated with the pulleys of the same pair of belts, using an independent electric motor which is powered. through an electronic variator for the cyclic reversal of the direction of rotation and to which is directly integrated an angular marking encoder.
  • Each of the mechanical encoders is connected to an electronic comparator which receives the signals from an angular encoder linked to the shaft of the weaving machine and which sends the instructions to the above-mentioned variators ensuring the correct angular setting of the mechanics by compared to the aforementioned machine.
  • Fig. 1 is a plan view from above of a Jacquard mechanism established in accordance with the invention.
  • Fig. 2 is a partial cross section on a large scale along the plane indicated in II-II in FIG. 1.
  • Fig. 3 is a diagram illustrating the electronic supply of the motors.
  • the frame of the Jacquard mechanism as shown in fig. 1 and 2 is formed by two vertical flanges which have been referenced 1 in FIG. 2. It is between these two flanges 1 that the different vertical rows of modules 2 are mounted, enclosing the members (lifting beam, electromagnet, hauling, etc.) associated with the reciprocating hooks (shown diagrammatically in 2 a in fig. 2) controlled by horizontal knives 3 to actuate the harness arches of the mechanics considered. Between the adjacent rows of modules 2 are mounted horizontal shafts 4 oriented perpendicular to the abovementioned flanges 1.
  • each shaft 4 the top of each of the flanges 1 is provided with a console 5 forming a support for two bearings 6 ensuring the mounting of the ends of a horizontal drum 7 for driving a vertical belt 8; the pair of belts 8 associated with the same shaft 4 supports by one of the strands two knives 3 arranged at heights suitable for acting on the two hooks of all the modules 2 of the same row.
  • tubular hub of one of the drums 7 (the one on the left in fig. 2) is directly engaged the corresponding end of the shaft 4 envisaged, the angular connection between the shaft and the drum being ensured by a flange of pinching 9.
  • the opposite end of the shaft 2 is engaged and pinched in the corresponding end of the other drum 7, the opposite end of the latter receiving the shaft 10 of an electric motor 11 fixed laterally against the console 5; the angular connection between the shaft 10 and the corresponding drum 7 is here also effected by means of a clamping flange 9.
  • the motors 11 are of the synchronous self-piloting type ("brushless") and each of them incorporates an automatic brake 18 and an angular encoder 14.
  • FIG. 3 clearly shows the electrical and electronic diagram for supplying these motors.
  • An electronic variator 12 is provided on the electrical supply conductors of each motor 11 which ensures the cyclic reversal of the direction of rotation of the shaft 10.
  • This variator 12 is placed under the control of an autonomous electronic comparator 13 which receives the signals coming from the angular encoder 14 integrated into the motor 11 envisaged, in order to compare them with those coming from an encoder 15 associated with the drive shaft of the weaving machine MT in order to permanently detect the angular position of said shaft .
  • the signals are processed on the one hand by a common electronic cam 16 for the transformation of the signals of continuous rotation into signals of alternative rotation, on the other hand by a independent amplifier 17 able to assign to the motor 11 which corresponds to it the coefficient amplification of the length of the alternative movement of movement of the two belts 8 as a function of the position of the shaft 4 along the mechanics (obtaining an oblique crowd).
  • each shaft 4 overcomes the drawbacks mentioned above. It will also be noted that the modification of the obliquity of the crowd is effected by means of a simple intervention at the level of the amplifiers 17, while in conventional Jacquard mechanics with central drive derived from the motor of the weaving machine, this same modification constitutes a very complex operation, involving the change of a series of mechanical components and delicate adjustments.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Supports For Plants (AREA)

Abstract

In the Jacquard mechanism, each pair of strap s(8) is operated by a separate electro-motor (11). The motor supply is through an electronic control (12), to reverse the rotation by cycles. The system has an integrated angular detection unit (14).

Description

La présente invention a trait aux mécaniques Jacquard pour la formation de la foule sur les machines à tisser et elle concerne plus particulièrement celles dans lesquelles les crochets à mouvement alternatif qui actionnent les arcades du harnais usuel sont commandés par des couteaux portés par les brins parallèles d'une série d'organes funiculaires ou courroies disposés par paires.The present invention relates to Jacquard mechanics for training the crowd on weaving machines and it relates more particularly to those in which the reciprocating hooks which actuate the arches of the usual harness are controlled by knives carried by the parallel strands of '' a series of funicular organs or belts arranged in pairs.

Le Brevet français N° 2 677 380 (STAUBLI) illustre bien l'agencement général des mécaniques de ce genre.French Patent No. 2,677,380 (STAUBLI) illustrates the general arrangement of this type of mechanical.

Pour l'entraînement de ce type de mécaniques, le mouvement est prélevé sur l'arbre principal de la machine à tisser à l'aide d'un premier renvoi d'angle relié par un arbre vertical à un second renvoi d'angle prévu à la hauteur de la mécanique à entraîner. L'arbre horizontal de sortie de ce second renvoi constitue l'arbre d'entrée de la mécanique, sur lequel sont en outre généralement montés un dispositif modulateur propre à conférer audit arbre la loi de mouvement désirée pour la mécanique, un dispositif pour la recherche du pas (détissage) et un frein destiné à immobiliser automatiquement la mécanique dès l'arrêt de l'entraînement.For the drive of this type of mechanical, the movement is taken from the main shaft of the weaving machine using a first bevel gear connected by a vertical shaft to a second bevel gear provided the height of the mechanics to be driven. The horizontal output shaft of this second reference constitutes the input shaft of the mechanics, on which are generally generally mounted a modulator device capable of conferring on said shaft the desired law of movement for mechanics, a device for research pitch (untwisting) and a brake intended to automatically immobilize the mechanics as soon as the drive stops.

L'arbre d'entrée de la mécanique doit évidemment être relié aux tambours qui assurent l'entraînement alternatif de chacune des courroies porte-couteaux, et sur ce point on pourra se référer à ce qui a été décrit et représenté dans le Brevet Français N° 2 703 697 (STAUBLI). Dans cet agencement, l'arbre d'entrée porte deux excentriques pour la commande de deux bielles verticales qui actionnent elles-mêmes deux bielles horizontales liées aux paires de tambours, ceux-ci étant établis à des diamètres différents qui vont en décroissant d'une extrémité à l'autre de la mécanique afin de conférer aux couteaux et aux crochets des courses différentes propres à l'obtention d'une foule oblique.The mechanical input shaft must obviously be connected to the drums which provide the alternating drive for each of the knife-carrying belts, and on this point we can refer to what has been described and represented in French Patent N ° 2 703 697 (STAUBLI). In this arrangement, the input shaft carries two eccentrics for the control of two vertical connecting rods which actuate themselves two horizontal connecting rods linked to the pairs of drums, these being established at different diameters which are decreasing by one end to end of the mechanics in order to give knives and hooks different strokes specific to obtaining an oblique crowd.

On peut constater qu'un tel mode d'entraînement implique un nombre élevé de pièces différentes qui grêvent le prix de revient. Les appareils accessoires (modulateur, frein, recherche du pas) renchérissent le coût et les interventions pour les réglages (course et obliquité) sont délicates, impliquant le recours à un personnel qualifié. On notera au surplus qu'il est impossible d'obtenir des nappes de fils non planes, telles que celles formant la foule dite elliptique.It can be seen that such a drive mode involves a large number of different parts which increase the cost price. Accessory devices (modulator, brake, step search) increase the cost and interventions for adjustments (stroke and skew) are delicate, involving the use of qualified personnel. Note also that it is impossible to obtain sheets of non-planar wires, such as those forming the so-called elliptical crowd.

C'est à ces inconvénients qu'entend remédier la présente invention, laquelle consiste essentiellement à entraîner chacun des arbres qui portent les tambours associés aux poulies d'une même paire de courroies, à l'aide d'un moteur électrique indépendant qui est alimenté à travers un variateur électronique pour l'inversion cyclique du sens de rotation et auquel est directement intégré un codeur angulaire de repérage.It is to these drawbacks that the present invention intends to remedy, which essentially consists in driving each of the shafts which carry the drums associated with the pulleys of the same pair of belts, using an independent electric motor which is powered. through an electronic variator for the cyclic reversal of the direction of rotation and to which is directly integrated an angular marking encoder.

Chacun des codeurs de la mécanique est relié à un comparateur électronique qui reçoit les signaux d'un codeur angulaire lié à l'arbre de la machine à tisser et qui adresse aux variateurs sus-mentionnés les instructions assurant le calage angulaire convenable de la mécanique par rapport à la machine précitée.Each of the mechanical encoders is connected to an electronic comparator which receives the signals from an angular encoder linked to the shaft of the weaving machine and which sends the instructions to the above-mentioned variators ensuring the correct angular setting of the mechanics by compared to the aforementioned machine.

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 plan par dessus d'une mécanique Jacquard établie conformément à l'invention.Fig. 1 is a plan view from above of a Jacquard mechanism established in accordance with the invention.

Fig. 2 est une coupe transversale partielle à grande échelle suivant le plan indiqué en II-II en fig. 1.Fig. 2 is a partial cross section on a large scale along the plane indicated in II-II in FIG. 1.

Fig. 3 est un schéma illustrant l'alimentation électronique des moteurs.Fig. 3 is a diagram illustrating the electronic supply of the motors.

Le bâti de la mécanique Jacquard telle que représentée en fig. 1 et 2 est formé par deux flasques verticaux qui ont été référencés 1 en fig. 2. C'est entre ces deux flasques 1 que sont montées les différentes rangées verticales de modules 2 renfermant les organes (palonnier, électro-aimant, mouflage, etc...) associés aux crochets à mouvement alternatif (schématisés en 2a en fig. 2) commandés par des couteaux horizontaux 3 pour actionner les arcades du harnais de la mécanique considérée. Entre les rangées adjacentes de modules 2 sont montés des arbres horizontaux 4 orientés perpendiculairement aux flasques 1 précités.The frame of the Jacquard mechanism as shown in fig. 1 and 2 is formed by two vertical flanges which have been referenced 1 in FIG. 2. It is between these two flanges 1 that the different vertical rows of modules 2 are mounted, enclosing the members (lifting beam, electromagnet, hauling, etc.) associated with the reciprocating hooks (shown diagrammatically in 2 a in fig. 2) controlled by horizontal knives 3 to actuate the harness arches of the mechanics considered. Between the adjacent rows of modules 2 are mounted horizontal shafts 4 oriented perpendicular to the abovementioned flanges 1.

Comme montré en fig. 2, au niveau de chaque arbre 4, le sommet de chacun des flasques 1 est pourvu d'une console 5 formant support pour deux roulements 6 assurant le montage des extrémités d'un tambour horizontal 7 pour l'entraînement d'une courroie verticale 8 ; la paire de courroies 8 associée à un même arbre 4 supporte par l'un des brins deux couteaux 3 disposés à des hauteurs appropriées pour agir sur les deux crochets de l'ensemble des modules 2 d'une même rangée.As shown in fig. 2, at each shaft 4, the top of each of the flanges 1 is provided with a console 5 forming a support for two bearings 6 ensuring the mounting of the ends of a horizontal drum 7 for driving a vertical belt 8; the pair of belts 8 associated with the same shaft 4 supports by one of the strands two knives 3 arranged at heights suitable for acting on the two hooks of all the modules 2 of the same row.

Dans le moyeu tubulaire de l'un des tambours 7 (celui de gauche en fig. 2) est directement engagée l'extrémité correspondante de l'arbre 4 envisagé, la solidarisation angulaire entre l'arbre et le tambour étant assurée par une bride de pinçage 9. L'extrémité opposée de l'arbre 2 est engagée et pincée dans l'extrémité correspondante de l'autre tambour 7, l'extrémité opposée de ce dernier recevant l'arbre 10 d'un moteur électrique 11 fixé latéralement contre la console 5 ; la solidarisation angulaire entre l'arbre 10 et le tambour 7 correspondant est ici également opérée au moyen d'une bride de pinçage 9.In the tubular hub of one of the drums 7 (the one on the left in fig. 2) is directly engaged the corresponding end of the shaft 4 envisaged, the angular connection between the shaft and the drum being ensured by a flange of pinching 9. The opposite end of the shaft 2 is engaged and pinched in the corresponding end of the other drum 7, the opposite end of the latter receiving the shaft 10 of an electric motor 11 fixed laterally against the console 5; the angular connection between the shaft 10 and the corresponding drum 7 is here also effected by means of a clamping flange 9.

Dans l'exemple de réalisation envisagé, on a supposé que pour des raisons évidentes de limitation d'encombrement, les moteurs 11 des différents arbres 4 étaient disposés de manière alternée.In the envisaged exemplary embodiment, it has been assumed that for obvious reasons of space limitation, the motors 11 of the different shafts 4 were arranged in an alternating manner.

Les moteurs 11 sont du type synchrone autopiloté ("brushless") et à chacun d'eux sont incorporés un frein automatique 18 et un codeur angulaire 14. Fig. 3 fait bien apparaître le schéma électrique et électronique d'alimentation de ces moteurs.The motors 11 are of the synchronous self-piloting type ("brushless") and each of them incorporates an automatic brake 18 and an angular encoder 14. FIG. 3 clearly shows the electrical and electronic diagram for supplying these motors.

Sur les conducteurs électriques d'alimentation de chaque moteur 11 est prévu un variateur électronique 12 qui assure l'inversion cyclique du sens de rotation de l'arbre 10. Ce variateur 12 est placé sous le contrôle d'un comparateur électronique autonome 13 qui reçoit les signaux provenant du codeur angulaire 14 intégré au moteur 11 envisagé, afin de les comparer à ceux provenant d'un codeur 15 associé à l'arbre d'entraînement de la machine à tisser MT en vue de détecter en permanence la position angulaire dudit arbre.An electronic variator 12 is provided on the electrical supply conductors of each motor 11 which ensures the cyclic reversal of the direction of rotation of the shaft 10. This variator 12 is placed under the control of an autonomous electronic comparator 13 which receives the signals coming from the angular encoder 14 integrated into the motor 11 envisaged, in order to compare them with those coming from an encoder 15 associated with the drive shaft of the weaving machine MT in order to permanently detect the angular position of said shaft .

A la sortie du codeur 15 et avant envoi à chacun des comparateurs autonomes 13, les signaux sont traités d'une part par une came électronique commune 16 pour la transformation des signaux de rotation continue en signaux de rotation alternative, d'autre part par un amplificateur indépendant 17 apte à affecter au moteur 11 qui lui correspond le coefficient d'amplification de la longueur de la course alternative de déplacement des deux courroies 8 en fonction de la position de l'arbre 4 le long de la mécanique (obtention d'une foule oblique).At the output of the encoder 15 and before sending to each of the autonomous comparators 13, the signals are processed on the one hand by a common electronic cam 16 for the transformation of the signals of continuous rotation into signals of alternative rotation, on the other hand by a independent amplifier 17 able to assign to the motor 11 which corresponds to it the coefficient amplification of the length of the alternative movement of movement of the two belts 8 as a function of the position of the shaft 4 along the mechanics (obtaining an oblique crowd).

L'entraînement indépendant de chaque arbre 4 permet d'obvier aux inconvénients signalés plus haut. On notera en outre que la modification de l'obliquité de la foule est opérée moyennant une simple intervention au niveau des amplificateurs 17, alors que dans les mécaniques Jacquard classiques à entraînement central dérivé du moteur de la machine à tisser, cette même modification constitue une opération très complexe, impliquant le changement d'une série de composants mécaniques et des réglages délicats.The independent drive of each shaft 4 overcomes the drawbacks mentioned above. It will also be noted that the modification of the obliquity of the crowd is effected by means of a simple intervention at the level of the amplifiers 17, while in conventional Jacquard mechanics with central drive derived from the motor of the weaving machine, this same modification constitutes a very complex operation, involving the change of a series of mechanical components and delicate adjustments.

On supprime ainsi la nécessité des appareils accessoires tels que modulateurs, recherche du pas, frein automatique, etc... des systèmes classiques. Il est aisé d'obtenir tout type de foule désiré, même la foule elliptique, moyennant intervention au niveau des amplificateurs 17.This eliminates the need for accessory devices such as modulators, step search, automatic brake, etc ... conventional systems. It is easy to obtain any type of desired crowd, even the elliptical crowd, by means of intervention at the level of the amplifiers 17.

Claims (4)

Mécanique Jacquard, du genre dans laquelle les crochets à mouvement alternatif (2a) qui actionnent les arcades du harnais sont commandés par des couteaux (3) portés par les brins parallèles d'une série de paires de courroies (8) elles-même animées d'un mouvement alternatif, caractérisée en ce que chacune des paires de courroies (8) est entrainée par un moteur électrique indépendant (11) qui est alimenté à travers un variateur électronique (12) pour l'inversion cyclique du sens de rotation dudit moteur, ce dernier intégrant directement un codeur angulaire de repérage (14).Jacquard mechanics, of the kind in which the reciprocating hooks (2 a ) which activate the harness arches are controlled by knives (3) carried by the parallel strands of a series of pairs of belts (8) themselves animated of an alternating movement, characterized in that each of the pairs of belts (8) is driven by an independent electric motor (11) which is supplied through an electronic variator (12) for the cyclic reversal of the direction of rotation of said motor , the latter directly integrating an angular location coder (14). Mécanique suivant la revendication 1, caractérisée en ce que les signaux émis par chaque codeur (14) sont envoyés à un comparateur autonome (13) pour être comparés à ceux provenant d'un codeur commun (15) associé à l'arbre de la machine à tisser (MT).Mechanics according to claim 1, characterized in that the signals emitted by each encoder (14) are sent to an autonomous comparator (13) to be compared with those coming from a common encoder (15) associated with the machine shaft to weave (MT). Mécanique suivant la revendication 2, caractérisée qu'à leur sortie du codeur commun (15) les signaux de celui-ci sont traités par une came électronique (16), puis par un amplificateur indépendant (17) avant d'être analysés par chaque comparateur (13).Mechanics according to claim 2, characterized in that at their output from the common encoder (15) the signals thereof are processed by an electronic cam (16), then by an independent amplifier (17) before being analyzed by each comparator (13). Mécanique suivant l'une quelconque des revendications qui précédent, caractérisé en ce que chaque moteur (11) incorpore un frein automatique (18).Mechanics according to any one of the preceding claims, characterized in that each motor (11) incorporates an automatic brake (18).
EP95420270A 1994-09-27 1995-09-26 Belt-type jacquard machine Expired - Lifetime EP0704563B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9411772 1994-09-27
FR9411772A FR2724948B1 (en) 1994-09-27 1994-09-27 BELT TYPE JACQUARD MECHANISM

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EP0704563A1 true EP0704563A1 (en) 1996-04-03
EP0704563B1 EP0704563B1 (en) 1999-06-02

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US (1) US5613526A (en)
EP (1) EP0704563B1 (en)
JP (1) JP3599444B2 (en)
DE (1) DE69509995T2 (en)
ES (1) ES2131784T3 (en)
FR (1) FR2724948B1 (en)

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DE19651799A1 (en) * 1996-12-13 1998-06-18 Schoenherr Webstuhlbau Gmbh Drive device for the shedding elements of weaving machines
WO2017076724A1 (en) * 2015-11-02 2017-05-11 Grosse (Zhejiang) Machinery Co., Ltd Shedding device

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EP0893525A1 (en) * 1997-07-24 1999-01-27 Sulzer Rüti Ag Driving arrangement for a loom and loom with such an arrangement
FR2772796B1 (en) * 1997-12-24 2000-01-28 Staubli Sa Ets METHOD FOR MOUNTING A FUNICULAR ELEMENT, A CROWD FORMING DEVICE AND A WEAVING MATERIAL
FR2795434B1 (en) 1999-06-25 2001-08-10 Staubli Sa Ets METHOD AND DEVICE FOR POSITIONING CHAIN THREADS OF A WEAVING MATERIAL AND WEAVING MATERIAL EQUIPPED WITH SUCH A DEVICE
IT1313636B1 (en) * 1999-09-28 2002-09-09 Tsm S R L AUTOMATIC NEEDLE FRAME FOR THE PRODUCTION OF BELTS.
FR2808812B1 (en) * 2000-05-15 2002-07-19 Staubli Sa Ets METHOD AND DEVICE FOR DETECTING ABNORMALITY IN THE CROWD OF A JACQUARD BUSINESS
ITMI20040086A1 (en) * 2004-01-22 2004-04-22 Fimtextile Spa ELECTRONIC CONTROL SYSTEM FOR DRAWING OF FABRICS IN DOBBIN WEAVING FRAMES
BE1016669A3 (en) * 2005-07-05 2007-04-03 Wiele Michel Van De Nv DEVICE FOR DRIVING A WEAVING WINDOW IN A WEAVING MACHINE AND A WEAVING MACHINE FITTED WITH ONE OR MULTIPLE SUCH DEVICES.

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JPH03249233A (en) * 1990-02-23 1991-11-07 Murata Mach Ltd Jacquard driving apparatus
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19651799A1 (en) * 1996-12-13 1998-06-18 Schoenherr Webstuhlbau Gmbh Drive device for the shedding elements of weaving machines
WO2017076724A1 (en) * 2015-11-02 2017-05-11 Grosse (Zhejiang) Machinery Co., Ltd Shedding device

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DE69509995T2 (en) 1999-10-07
JP3599444B2 (en) 2004-12-08
ES2131784T3 (en) 1999-08-01
EP0704563B1 (en) 1999-06-02
JPH08170241A (en) 1996-07-02
FR2724948A1 (en) 1996-03-29
DE69509995D1 (en) 1999-07-08
US5613526A (en) 1997-03-25
FR2724948B1 (en) 1996-12-27

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