EP2666893B1 - Shedding device and loom provided with such a device - Google Patents

Shedding device and loom provided with such a device Download PDF

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Publication number
EP2666893B1
EP2666893B1 EP13168912.7A EP13168912A EP2666893B1 EP 2666893 B1 EP2666893 B1 EP 2666893B1 EP 13168912 A EP13168912 A EP 13168912A EP 2666893 B1 EP2666893 B1 EP 2666893B1
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EP
European Patent Office
Prior art keywords
pulley
axis
crown
housing
pinion
Prior art date
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Active
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EP13168912.7A
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German (de)
French (fr)
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EP2666893A1 (en
Inventor
Clément Champion
Denis VOINÇON
Sébastien Communal
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Staubli Faverges SCA
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Staubli Faverges SCA
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Publication of EP2666893A1 publication Critical patent/EP2666893A1/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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/20—Electrically-operated jacquards
    • D03C3/205—Independently actuated lifting cords
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C13/00—Shedding mechanisms not otherwise provided for
    • D03C13/02—Shedding mechanisms not otherwise provided for with independent drive motors
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/20—Electrically-operated jacquards
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type

Definitions

  • the invention relates to a shedding device for installation on a loom.
  • a mechanical shaft drives the winding pulleys arcades, without the use of a rotary electric actuator.
  • the pulley is driven by an electric actuator which controls the race of the arch integral with the pulley.
  • housings comprising up to sixteen subsets formed of a pulley and an associated actuator. The housings grouping these subassemblies have the advantage of a space saving on the loom. Up to forty of these housings are mounted on either side of an aluminum profile that ensures their mechanical maintenance and cooling. Each actuator controls a pulley that is removably mounted.
  • EP-A-1,493,857 discloses a method and a device for simultaneous placement and disassembly of sixteen pulleys of a housing. These devices significantly improve the quality of maintenance operations, in terms of practicality and duration.
  • the sizing of a loom is the result of compromise between cost and space requirements taking into account the diversity of applications that can be processed.
  • the development of new weaving techniques, such as 3D weaving requires both an increase in strokes and allowable loads on the arcuate drive means of a Jacquard loom.
  • the invention is more particularly aimed at, by proposing a new device for forming the shed for a loom, which is easy to manufacture and economic and which allows a significant increase in the races and allowable loads on the means of training an arcade.
  • the invention relates to a shedding device for a loom comprising at least one rotary electric actuator intended for winding around a pulley of a funicular element controlling at least one rail, a shaft of output of the actuator being rotatable about a first axis.
  • the actuator shaft is provided with a pinion meshing with a ring gear integral with the pulley and movable in rotation therewith about a second axis perpendicular to the first axis.
  • the maximum load available at the funicular element can be increased by adjusting the ratio of the gear formed by the pinion and the ring gear.
  • the pulley rotates about an axis perpendicular to the axis of rotation of the motor shaft, it can be supported at both ends, without being cantilevered. Its axial length can thus be relatively large, which allows the winding of the funicular element on a number of turns allowing a relatively large stroke of the rail.
  • the invention also relates to a loom comprising a shedding device as mentioned above.
  • the Jacquard type loom M represented by figure 1 comprises a shedding device 1 mounted on a superstructure 2, above the beam 3 and the weft roller 4 of the loom on which a fabric T weaves during weaving.
  • the device 1 comprises a plurality of modules 10 for controlling the vertical displacement of arches 20 constituting the funicular elements of a harness 30 of the loom M, each lug supporting a lug 21 equipped with an eyelet 22 for the passage of a warp yarn . Only one column of housings 10, five arches 20 and five rails 21 are represented at figure 1 , for the sake of clarity.
  • Each module 10 is arranged on a rail 5.
  • the shedding device 1 comprises twelve rails, each of these rails being able to receive on either side up to forty of these modules. On each of the rails represented on the figure 1 only the first module of each rail is shown.
  • Each of the modules 10 comprises a housing 110 designed to receive sixteen actuators 112 in individual housings 110A.
  • the output shaft 114 of each of the actuators 112 is integral in rotation with a pinion 116 with straight teeth.
  • X114 is the axis of rotation of the shaft 114 and the pinion 116 of an actuator 112.
  • the axes X114 of the actuators 112 mounted in the housing 110 are parallel to each other.
  • Each actuator 112 is intended to drive a pulley 126 to which is attached the upper end of an arch 20.
  • each pulley 126 is provided with a housing 126A for receiving and jamming a not shown upper end of an arch 20. Alternatively, the upper end of the arch 20 may be overmolded in the pulley.
  • Each pulley 126 also comprises a cylindrical portion 126B and circular section on which can wind a yoke 20 whose end is wedged in the housing 126A.
  • Y126 denotes the central axis of the portion 126B which is, in fact, the axis of rotation of the pulley 126.
  • L126 denotes the axial length, measured parallel to the Y126 axis, of the portion 126B, it is that is, the portion of the pulley 126 available for winding an arch.
  • Each pulley 126 is integral in rotation, about the axis Y126, with a ring gear 124.
  • Each pair formed of a ring 124 and a pulley 126 is mounted in a housing 120A defined by a support 120 which is attached to the housing 110.
  • the support 120 is open on its first side facing the housing 110, to allow to introduce a pinion 116 in each housing 120A.
  • the support 120 is also open on its second side opposite to the housing 110 and visible to the figure 2 . On this second side, the support 120 is obstructed by a cover 130.
  • the parts 120 and 130 are advantageously made of plastic material, for example ABS polycarbonate alloy particularly adapted for its dimensional stability.
  • the support 120 is mounted reversibly on the housing 110, for example by means of screws not shown.
  • the cover 130 is mounted reversibly on the support 120, for example clipped thereon.
  • each pinion 116 of an actuator 112 is engaged with a ring 124, itself secured to a pulley 126, while the axes of rotation X114 and X126 of these parts are perpendicular.
  • the establishment of a pinion 116 and a ring 124 as intermediate pieces between the actuator 112, which generates the rotary movement of the pulley 126, and the pulley 126, on which is wound the yoke 20, allows the creation of a reducer.
  • the number of teeth of the pinion 116 is smaller than the number of teeth of the crown 124. This makes it possible to obtain a reduction effect of the torque obtained at the level of the shaft 114 and which is transmitted to the pulley 126 by the gearbox formed by parts 116 and 124.
  • the maximum load available at the yoke 20 can thus be adapted to the traction forces to be generated on each yoke. 20.
  • the ratio of the number of teeth of the crown 124 to the number of teeth of the pinion 116 is 1/3 in the chosen embodiment and could be between 1/2 and 1/5.
  • the pinion 116 is straight-toothed and cooperates with the ring 124 whose teeth are adapted to that of the pinion.
  • the toothing of the crown is of the "Cylkro" type, as known from WO-A-96/12585 .
  • the pinion has eleven teeth of 0.7 module, while the crown has thirty-three teeth.
  • the use of the right set of teeth makes it possible to position the ring 124 which is not very accurate along the axis X114. Indeed, the contact conditions remain the same along a tooth of the pinion.
  • the meshing generates no resultant on the pinion directed along the axis X114. The meshing therefore has no consequence on the operating conditions of the bearings of the actuator shaft.
  • the pinion and the crown are made of polyacetal, the choice of this plastic material allowing operation without lubricant supply and guaranteeing good resistance to wear.
  • the ring gear 124 and the pulley 126 are mounted free to rotate, with the interposition of a ball bearing 122, around a shaft 128 whose longitudinal axis is aligned with the axis Y126. Since the axes X114 and Y126 are perpendicular, the shaft 128 extends between two walls 1201 of the support 120 which are vertical to the figure 2 , while the X114 and Y126 axes are horizontal.
  • a housing 1244 of the crown 124 is provided to accommodate a nose 1264 of the pulley 126.
  • the housing 1244 and the nose 1264 have complementary and non-circular shapes.
  • the mounting of the pulley 126 on the ring 124 is by clipping the nose 1264 of the pulley 126 in the housing 1244, with 1262 tabs elastically deformable and provided with end nozzles 1266.
  • the beaks 1266 tabs 1262 are clipped into slots 1242 of the ring 124 provided for this purpose, on either side of the housing 1244. This clipping of the pulley 126 on the ring 124 thus ensures their translation solidarity along the axis Y126.
  • a spring 123 is disposed between the shaft 128 and a wall 1201 of the support 120. It exerts on this shaft an elastic force E1 directed towards the other wall 1201 of the housing 120A in which the shaft is received.
  • a pulley subassembly 129 is considered comprising a pulley 126, a ring 124, a bearing 122, a spring 123 and a shaft 128.
  • Each subassembly 129, of which the shaft 128 is the central member, is disposed in a housing 120A of the support 120.
  • one end 123A of the spring is in abutment against a wall 1201 of the support 120, while the other end 123B is in contact with the bottom of an internal bore 1281 of the shaft 128.
  • the spring 123 thus exerts the elastic force E1 on the shaft 128.
  • the bearing 122 resting on a shoulder 1286 of the shaft 128, the shaft also exerts the force E1 on the bearing 122, which itself exerts this effort E1 on the pulley 126, at an internal shoulder 1268 of the pulley.
  • an elastic load means such as the spring 123 allows the clearance of the meshing clearance between the pinion 116 and the ring gear 124 along the axis Y126, the ring being elastically biased towards the pinion.
  • each housing 1204 is bordered by an elastically deformable tooth 1205 which serves as a retaining member of the end 1282 of the shaft 128 in place in the housing 1204. This tooth is erased during the installation of the shaft 128 in the housing 1204., following which the shaft 128 is clipped and retained in place by the tooth 1205.
  • a similar tooth is provided at the housing 1206 so that the end 1284 of the shaft 128 is held in place.
  • another clipping member or more generally retaining may be provided at the housing 1204 and 1206.
  • the shaft 128 thus clipped is immobilized in rotation around the axis Y126 and has a certain axial freedom.
  • the pulley 126 whose shaft is held at both ends by the support 120, is stable on its axis since it is not cantilevered.
  • it rotates around the shaft 128 by means of two bearings formed on the one hand by the bearing 122 and on the other hand by a zone S of smooth contact between the inner bore of the pulley 124 and the cylindrical outer surface of the shaft 128 located opposite the bearing 122.
  • the two bearings are located on either side of the winding portion 126B of the arch 20. It thus becomes possible to increase the length L126 of the portion 126B hosting the arch 20, without reducing the stability of the pulley.
  • the length L126 is between 8 and 10 mm for a pulley 126 whose portion 126B has a diameter of the order of 9 mm. Under these conditions, the winding length of the yoke 20 in the configuration of the figure 8 has a value between 270 and 290 mm.
  • the length L126 is increased relative to the axial length of the pulleys of the prior devices. This increased length makes it possible to wind around the pulley a longer length of arcade. This thus makes it possible to increase the possible stroke for the rails 21, compared to the known devices.
  • multilayer 3D weaving applications which involve the formation of several superimposed crowds or the displacement of the crowd following the woven layer are easily achievable.
  • the play-catching device along the axis Y126 thanks to the spring 123, previously described, functions identically for the sixteen pulley subassemblies 129 contained in a support 120.
  • it allows an individual self-tuning of the axial position along the axes Y126 of the sixteen crowns 124 of the pulley subassemblies 129 mounted on the support 120, with respect to the sixteen pinions 116 of the actuators 112 mounted on the housing 110, when the support 120 is attached to the housing 110.
  • the X114 and Y126 axes are concurrent.
  • the distribution of the mounting tolerances of the gears 116 and pulley subassemblies 129 is centered on a nominal configuration where these axes are effectively intersecting.
  • the teeth of the elements 116 and 124 remain engaged under satisfactory meshing conditions.
  • the reducer formed of the elements 116 and 124 is not very sensitive to defects in positioning along the Z axis perpendicular to the X114 and Y126 axes which are distributed on either side of the nominal configuration where these axes are actually concurrent.
  • these axes may not be concurrent, which is possible given the type of teeth used.
  • the positioning of the ring 124 on the axis of the actuator X114 need not be precise.
  • the device is therefore compatible with a montage without fine adjustment.
  • the envisaged design of the device allows an adaptation of the meshing conditions in the directions of the axes X114 and Y126, as well as a tolerance in the direction Z.
  • the pulley subassemblies 129 are supported by the support 120, which is a separate piece from the housing 110. In this way, the sixteen subassemblies 129 and their support 120 form a removable functional unit that can be easily dismantled in order to carry out maintenance operations at the same time. both on the actuators 112 and on the pulley subassemblies 129.
  • the mounting of a shedding device according to the invention is done by equipping each housing 110 of the actuators 112 mounted in their housing 110A.
  • a pinion 116 is mounted on the shaft 114 of each actuator 112 before or after it is mounted in the housing 110.
  • the support 120 equipped with the pulley subassemblies 129 is attached to the housing 110.
  • the hood 130 is mounted on the support 120.
  • the crowns 124 come into contact with the end chamfer of the teeth of the pinion 116 and then offset along the axis of the pulley shaft Y126 126 to the against the action of the spring 123. This spring recalls the teeth in meshing configuration, without action of the operator. Once in place, the gears 116 and crowns 124 are in operating condition, without play and without a specific adjustment operation is necessary.
  • the installation of such a device also allows the reconditioning of a loom of the state of the art in a loom according to the invention.
  • the transition from a system with simple pulleys cantilevered to a gear system can comprise the following three steps. In a first step, and for each actuator, the pulley is replaced by a pinion 116. Then, the support 120 is mounted on the housing 110 and the cover on the support, as explained above.
  • the invention can be implemented with bevel gears. These gears with concurrent axes require to operate under conditions optimal, the coincidence of the tops of the tooth cones.
  • the catch-up device along the axis of rotation of the pulley allows a satisfactory adjustment of the game.
  • the invention can also be implemented with hypoid gears that is to say with spiral left gears.
  • the gears and crowns have conical teeth but are not necessarily in rotation around intersecting axes.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Gears, Cams (AREA)

Description

L'invention a trait à un dispositif de formation de la foule destiné à être installé sur un métier à tisser.The invention relates to a shedding device for installation on a loom.

Dans le domaine textile, il est connu que, sur une machine à tisser de type Jacquard, la formation de la foule des fils de chaine du métier à tisser a lieu en faisant passer chaque fil de chaine au travers de l'oeillet d'une lisse dont une extrémité est reliée à un ressort et l'autre extrémité est connectée à un élément funiculaire. L'élément funiculaire ou arcade est un fil, un câble mono ou multi brin apte à s'enrouler autour d'une poulie et à suivre un chemin défini par des guidages. Le principe d'enroulement de l'arcade autour d'une poulie est connu, par exemple, de US-A-4 433 704 ou de EP-A-0 933 456 . Dans le matériel de US-A-4 433 704 , un arbre mécanique entraîne des poulies d'enroulement des arcades, sans qu'il soit fait usage d'un actionneur électrique rotatif. Dans le matériel de EP-A-0 933 456 , la poulie est entraînée par un actionneur électrique qui contrôle la course de l'arcade solidaire de la poulie. Il est également connu de EP 0 926 280 d'utiliser des boîtiers comprenant jusqu'à seize sous-ensembles formés d'une poulie et d'un actionneur associé. Les boîtiers regroupant ces sous-ensembles présentent l'avantage d'un gain d'espace sur le métier à tisser. Jusqu'à quarante de ces boîtiers sont montés de part et d'autre d'un profilé en aluminium qui assure leur maintien mécanique et leur refroidissement. Chaque actionneur commande une poulie qui est montée de façon amovible. L'ensemble des poulies, des arcades, des lisses, des ressorts et des éléments de guidage associés requiert un nombre d'opérations de montage important. EP-A-1 493 857 divulgue un procédé et un dispositif permettant la mise en place et le démontage simultanés de seize poulies d'un boîtier. Ces dispositifs améliorent significativement la qualité des opérations de maintenance, en termes de praticité et de durée.In the textile field, it is known that, on a Jacquard weaving machine, the formation of the shedding of the warp yarns of the loom takes place by passing each warp thread through the eyelet of a garment. one end is connected to a spring and the other end is connected to a funicular element. The funicular or arcade element is a wire, a single or multi-strand cable capable of wrapping around a pulley and following a path defined by guides. The principle of winding the arch around a pulley is known, for example, from US-A-4,433,704 or EP-A-0 933 456 . In the material of US-A-4,433,704 , a mechanical shaft drives the winding pulleys arcades, without the use of a rotary electric actuator. In the material of EP-A-0 933 456 , the pulley is driven by an electric actuator which controls the race of the arch integral with the pulley. It is also known to EP 0 926 280 to use housings comprising up to sixteen subsets formed of a pulley and an associated actuator. The housings grouping these subassemblies have the advantage of a space saving on the loom. Up to forty of these housings are mounted on either side of an aluminum profile that ensures their mechanical maintenance and cooling. Each actuator controls a pulley that is removably mounted. The set of pulleys, arches, rails, springs and associated guide elements requires a number of important mounting operations. EP-A-1,493,857 discloses a method and a device for simultaneous placement and disassembly of sixteen pulleys of a housing. These devices significantly improve the quality of maintenance operations, in terms of practicality and duration.

Le dimensionnement d'un métier à tisser est le résultat de compromis entre les impératifs de coût et d'encombrement en tenant compte de la diversité des applications qui peuvent être traitées. Parallèlement, le développement de nouvelles techniques de tissage, comme le tissage 3D, requiert à la fois une augmentation des courses et des charges admissibles sur les moyens d'entraînement des arcades d'un métier à tisser de type Jacquard.The sizing of a loom is the result of compromise between cost and space requirements taking into account the diversity of applications that can be processed. At the same time, the development of new weaving techniques, such as 3D weaving, requires both an increase in strokes and allowable loads on the arcuate drive means of a Jacquard loom.

Ce sont ces objectifs que vise plus particulièrement l'invention, en proposant un nouveau dispositif de formation de la foule pour métier à tisser, de fabrication aisée et économique et qui permet une augmentation significative des courses et des charges admissibles sur les moyens d'entraînement d'une arcade.It is these objectives which the invention is more particularly aimed at, by proposing a new device for forming the shed for a loom, which is easy to manufacture and economic and which allows a significant increase in the races and allowable loads on the means of training an arcade.

A cet effet, l'invention concerne un dispositif de formation de la foule pour métier à tisser comprenant au moins un actionneur électrique rotatif prévu pour l'enroulement autour d'une poulie d'un élément funiculaire commandant au moins une lisse, un arbre de sortie de l'actionneur étant rotatif autour d'un premier axe. Conformément à l'invention, l'arbre de l'actionneur est pourvu d'un pignon, engrenant avec une couronne dentée solidaire de la poulie et mobile en rotation avec celle-ci autour d'un deuxième axe perpendiculaire au premier axe.For this purpose, the invention relates to a shedding device for a loom comprising at least one rotary electric actuator intended for winding around a pulley of a funicular element controlling at least one rail, a shaft of output of the actuator being rotatable about a first axis. According to the invention, the actuator shaft is provided with a pinion meshing with a ring gear integral with the pulley and movable in rotation therewith about a second axis perpendicular to the first axis.

Grâce à l'invention, la charge maximum disponible au niveau de l'élément funiculaire peut être augmentée en jouant sur le rapport de l'engrenage formé par le pignon et la couronne. En outre, comme la poulie tourne autour d'un axe perpendiculaire à l'axe de rotation de l'arbre du moteur, elle peut être supportée à ses deux extrémités, sans être en porte-à-faux. Sa longueur axiale peut ainsi être relativement importante, ce qui autorise l'enroulement de l'élément funiculaire sur un nombre de tours permettant une course relativement importante de la lisse.Thanks to the invention, the maximum load available at the funicular element can be increased by adjusting the ratio of the gear formed by the pinion and the ring gear. In addition, as the pulley rotates about an axis perpendicular to the axis of rotation of the motor shaft, it can be supported at both ends, without being cantilevered. Its axial length can thus be relatively large, which allows the winding of the funicular element on a number of turns allowing a relatively large stroke of the rail.

Selon des aspects avantageux mais non obligatoires de l'invention, un tel dispositif peut incorporer une ou plusieurs des caractéristiques suivantes, prises dans toute combinaison techniquement admissible :

  • La couronne est mobile le long du deuxième axe et le dispositif comprend des moyens de charge élastique de la couronne vers le pignon, le long du deuxième axe.
  • L'arbre de l'actionneur et l'axe de la poulie sont concourants.
  • Le pignon a une denture droite et la couronne a une denture adaptée à celle du pignon.
  • L'actionneur est monté dans un boîtier, alors que la poulie et la couronne sont montées mobiles en rotation autour du deuxième axe dans un support distinct et séparable du boîtier.
  • Le dispositif comprend plusieurs actionneurs montés dans un même boîtier, avec leurs premiers axes respectifs parallèles entre eux, et plusieurs sous-ensembles comprenant chacun une poulie et une couronne, en nombre égal au nombre d'actionneurs montés dans le boîtier, ces sous-ensembles étant montés dans le même support distinct et séparable du boîtier, avec leurs deuxièmes axes de rotation respectifs perpendiculaires aux premiers axes des actionneurs.
  • La couronne et la poulie sont montées rotatives autour d'un arbre aligné selon le deuxième axe et clipsé sur le support.
  • Les moyens de charge élastique de la couronne vers le pignon agissent entre l'arbre et le support.
  • Le nombre de dents du pignon est inférieur au nombre de dent de la couronne.
  • La couronne est clipsée et immobilisée en rotation par coopération de formes sur la poulie.
According to advantageous but non-mandatory aspects of the invention, such a device may incorporate one or more of the following features, taken in any technically permissible combination:
  • The ring is movable along the second axis and the device comprises means for elastic loading of the ring gear towards the pinion, along the second axis.
  • The actuator shaft and the pulley axis are concurrent.
  • The pinion has a straight toothing and the crown has a toothing adapted to that of the pinion.
  • The actuator is mounted in a housing, while the pulley and the ring are rotatably mounted around the second axis in a separate and separable support housing.
  • The device comprises several actuators mounted in the same housing, with their respective first axes parallel to each other, and several subassemblies each comprising a pulley and a ring, in number equal to the number of actuators mounted in the housing, these subassemblies being mounted in the same separate and separable support housing, with their respective second axes of rotation perpendicular to the first axes of the actuators.
  • The ring and the pulley are rotatably mounted around a shaft aligned along the second axis and clipped on the support.
  • The elastic load means of the crown towards the pinion act between the shaft and the support.
  • The number of teeth of the pinion is less than the number of teeth of the crown.
  • The crown is clipped and immobilized in rotation by cooperation of shapes on the pulley.

L'invention concerne également un métier à tisser comprenant un dispositif de formation de la foule tel que mentionné ci-dessus.The invention also relates to a loom comprising a shedding device as mentioned above.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre d'un mode de réalisation d'un dispositif de formation de la foule et d'un métier à tisser conforme à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective d'un métier à tisser de type Jacquard conforme à l'invention ;
  • la figure 2 est une vue en perspective éclatée d'un module appartenant au dispositif de formation de la foule du métier de la figure 1, lui-même conforme à l'invention ;
  • la figure 3 est une vue en perspective éclatée de certains éléments appartenant au module de la figure 2 ;
  • la figure 4 est une vue en perspective éclatée, selon un autre angle, de la poulie et de la couronne représentées à la figure 3 ;
  • la figure 5 est une vue en perspective du détail V à la figure 2, à plus grande échelle selon un autre angle ;
  • la figure 6 est une vue en perspective selon la flèche VI à la figure 5, et
  • la figure 7 est une coupe longitudinale prise le long de l'arbre d'un sous-ensemble poulie, selon un plan analogue au plan VII à la figure 6, mais dans une partie centrale du support visible sur la figure 2.
  • la figure 8 est une vue de face de la partie du dispositif représentée à la figure 6, montrant une arcade enroulée sur la poulie.
The invention will be better understood and other advantages thereof will become more apparent in light of the following description of an embodiment of a shedding device and a compliant loom. in principle, given purely by way of example and with reference to the appended drawings in which:
  • the figure 1 is a perspective view of a Jacquard loom according to the invention;
  • the figure 2 is an exploded perspective view of a module belonging to the crowd forming device of the trade of the figure 1 itself in accordance with the invention;
  • the figure 3 is an exploded perspective view of some elements belonging to the module of the figure 2 ;
  • the figure 4 is an exploded perspective view, from another angle, of the pulley and the crown shown in FIG. figure 3 ;
  • the figure 5 is a perspective view of detail V to the figure 2 on a larger scale from another angle;
  • the figure 6 is a perspective view according to arrow VI at figure 5 , and
  • the figure 7 is a longitudinal section taken along the shaft of a pulley subassembly, according to a plane similar to plane VII at figure 6 but in a central part of the support visible on the figure 2 .
  • the figure 8 is a front view of the part of the device shown in figure 6 , showing an arch rolled up on the pulley.

Le métier à tisser M de type Jacquard représenté à la figure 1 comprend un dispositif de formation de la foule 1 monté sur une superstructure 2, au-dessus de l'ensouple 3 et du rouleau toilier 4 du métier sur laquelle s'enroule un tissu T en cours de tissage. Le dispositif 1 comprend plusieurs modules 10 destinés à commander le déplacement vertical d'arcades 20 constituant les éléments funiculaires d'un harnais 30 du métier M, chaque arcade supportant une lisse 21 équipée d'un oeillet 22 de passage d'un fil de chaîne. Seule une colonne de boîtiers 10, cinq arcades 20 et cinq lisses 21 sont représentées à la figure 1, pour la clarté du dessin. Chaque module 10 est disposé sur un rail 5. Le dispositif de formation de la foule 1 comprend douze rails, chacun de ces rails pouvant recevoir de part et d'autre jusqu'à quarante de ces modules. Sur chacun des rails représentés sur la figure 1, il n'est représenté que le premier module de chaque rail.The Jacquard type loom M represented by figure 1 comprises a shedding device 1 mounted on a superstructure 2, above the beam 3 and the weft roller 4 of the loom on which a fabric T weaves during weaving. The device 1 comprises a plurality of modules 10 for controlling the vertical displacement of arches 20 constituting the funicular elements of a harness 30 of the loom M, each lug supporting a lug 21 equipped with an eyelet 22 for the passage of a warp yarn . Only one column of housings 10, five arches 20 and five rails 21 are represented at figure 1 , for the sake of clarity. Each module 10 is arranged on a rail 5. The shedding device 1 comprises twelve rails, each of these rails being able to receive on either side up to forty of these modules. On each of the rails represented on the figure 1 only the first module of each rail is shown.

Chacun des modules 10 comprend un boîtier 110 prévu pour recevoir seize actionneurs 112 dans des logements individuels 110A. L'arbre de sortie 114 de chacun des actionneurs 112 est solidaire en rotation d'un pignon 116 à denture droite. On note X114 l'axe de rotation de l'arbre 114 et du pignon 116 d'un actionneur 112. Les axes X114 des actionneurs 112 montés dans le boîtier 110 sont parallèles entre eux.Each of the modules 10 comprises a housing 110 designed to receive sixteen actuators 112 in individual housings 110A. The output shaft 114 of each of the actuators 112 is integral in rotation with a pinion 116 with straight teeth. X114 is the axis of rotation of the shaft 114 and the pinion 116 of an actuator 112. The axes X114 of the actuators 112 mounted in the housing 110 are parallel to each other.

Chaque actionneur 112 est prévu pour entraîner une poulie 126 à laquelle est accrochée l'extrémité supérieure d'une arcade 20. Pour ce faire, et comme visible à la figure 3, chaque poulie 126 est pourvue d'un logement 126A de réception et de coincement d'une extrémité supérieure non représentée d'une arcade 20. En variante, l'extrémité supérieure de l'arcade 20 peut être surmoulée dans la poulie. Chaque poulie 126 comprend également une portion 126B cylindrique et à section circulaire sur laquelle peut s'enrouler une arcade 20 dont l'extrémité est coincée dans le logement 126A. On note Y126 l'axe central de la portion 126B qui est, en fait, l'axe de rotation de la poulie 126. On note L126 la longueur axiale, mesurée parallèlement à l'axe Y126, de la portion 126B, c'est-à-dire de la portion de la poulie 126 disponible pour l'enroulement d'une arcade.Each actuator 112 is intended to drive a pulley 126 to which is attached the upper end of an arch 20. To do this, and as visible in FIG. figure 3 , each pulley 126 is provided with a housing 126A for receiving and jamming a not shown upper end of an arch 20. Alternatively, the upper end of the arch 20 may be overmolded in the pulley. Each pulley 126 also comprises a cylindrical portion 126B and circular section on which can wind a yoke 20 whose end is wedged in the housing 126A. Y126 denotes the central axis of the portion 126B which is, in fact, the axis of rotation of the pulley 126. L126 denotes the axial length, measured parallel to the Y126 axis, of the portion 126B, it is that is, the portion of the pulley 126 available for winding an arch.

Chaque poulie 126 est solidaire en rotation, autour de l'axe Y126, avec une couronne dentée 124. Chaque paire formée d'une couronne 124 et d'une poulie 126 est montée dans un logement 120A défini par un support 120 qui est rapporté sur le boîtier 110.Each pulley 126 is integral in rotation, about the axis Y126, with a ring gear 124. Each pair formed of a ring 124 and a pulley 126 is mounted in a housing 120A defined by a support 120 which is attached to the housing 110.

Le support 120 est ouvert sur son premier côté tourné vers le boîtier 110, pour permettre d'introduire d'un pignon 116 dans chaque logement 120A. Le support 120 est également ouvert sur son deuxième côté opposé au boîtier 110 et visible à la figure 2. Sur ce deuxième côté, le support 120 est obstrué par un capot 130.The support 120 is open on its first side facing the housing 110, to allow to introduce a pinion 116 in each housing 120A. The support 120 is also open on its second side opposite to the housing 110 and visible to the figure 2 . On this second side, the support 120 is obstructed by a cover 130.

Les pièces 120 et 130 sont avantageusement réalisées en matériau plastique, par exemple en alliage de polycarbonate ABS particulièrement adapté par sa stabilité dimensionnelle.The parts 120 and 130 are advantageously made of plastic material, for example ABS polycarbonate alloy particularly adapted for its dimensional stability.

Le support 120 est monté de façon réversible sur le boîtier 110, par exemple au moyen de vis non représentées. De même, le capot 130 est monté de façon réversible sur le support 120, par exemple clipsé sur celui-ci.The support 120 is mounted reversibly on the housing 110, for example by means of screws not shown. Similarly, the cover 130 is mounted reversibly on the support 120, for example clipped thereon.

En configuration montée d'un module 10, chaque pignon 116 d'un actionneur 112 est en prise avec une couronne 124, elle-même solidaire d'une poulie 126, alors que les axes de rotation X114 et X126 de ces pièces sont perpendiculaires.In mounted configuration of a module 10, each pinion 116 of an actuator 112 is engaged with a ring 124, itself secured to a pulley 126, while the axes of rotation X114 and X126 of these parts are perpendicular.

La mise en place d'un pignon 116 et d'une couronne 124 comme pièces intermédiaires entre l'actionneur 112, qui génère le mouvement rotatif de la poulie 126, et la poulie 126, sur laquelle est enroulée l'arcade 20, permet la création d'un réducteur. Le nombre de dents du pignon 116 est inférieur au nombre de dents de la couronne 124. Ceci permet d'obtenir un effet de démultiplication du couple obtenu au niveau de l'arbre 114 et qui est transmis à la poulie 126 par le réducteur formé par les pièces 116 et 124. En jouant sur le rapport du couple d'engrenages composé par le pignon 116 et la couronne 124, la charge maximum disponible au niveau de l'arcade 20 peut ainsi être adaptée aux efforts de traction à générer sur chaque arcade 20.The establishment of a pinion 116 and a ring 124 as intermediate pieces between the actuator 112, which generates the rotary movement of the pulley 126, and the pulley 126, on which is wound the yoke 20, allows the creation of a reducer. The number of teeth of the pinion 116 is smaller than the number of teeth of the crown 124. This makes it possible to obtain a reduction effect of the torque obtained at the level of the shaft 114 and which is transmitted to the pulley 126 by the gearbox formed by parts 116 and 124. By varying the ratio of the gear pair composed by the pinion 116 and the ring gear 124, the maximum load available at the yoke 20 can thus be adapted to the traction forces to be generated on each yoke. 20.

Le rapport du nombre de dents de la couronne 124 sur le nombre de dents du pignon 116 est de 1/3 dans l'exemple de réalisation choisi et pourrait être compris entre 1/2 et 1/5.The ratio of the number of teeth of the crown 124 to the number of teeth of the pinion 116 is 1/3 in the chosen embodiment and could be between 1/2 and 1/5.

Le pignon 116 est à denture droite et coopère avec la couronne 124 dont la denture est adaptée à celle du pignon. En pratique, la denture de la couronne est de type « Cylkro », tel que connu de WO-A-96/12585 . Dans l'exemple du dispositif considéré et visible aux figures 1 à 8, le pignon a onze dents de module 0,7, alors que la couronne a trente-trois dents. L'utilisation de la denture droite permet un positionnement de la couronne 124 peu précis suivant l'axe X114. En effet, les conditions de contact restent les même le long d'une dent du pignon. De plus, l'engrènement ne génère aucune résultante sur le pignon dirigée suivant l'axe X114. L'engrènement n'a donc pas de conséquence sur les conditions de fonctionnement des paliers de l'arbre de l'actionneur.The pinion 116 is straight-toothed and cooperates with the ring 124 whose teeth are adapted to that of the pinion. In practice, the toothing of the crown is of the "Cylkro" type, as known from WO-A-96/12585 . In the example of the device considered and visible Figures 1 to 8 , the pinion has eleven teeth of 0.7 module, while the crown has thirty-three teeth. The use of the right set of teeth makes it possible to position the ring 124 which is not very accurate along the axis X114. Indeed, the contact conditions remain the same along a tooth of the pinion. In addition, the meshing generates no resultant on the pinion directed along the axis X114. The meshing therefore has no consequence on the operating conditions of the bearings of the actuator shaft.

Le pignon et la couronne sont en polyacétal, le choix de cette matière plastique permettant un fonctionnement sans apport de lubrifiant et garantissant une bonne tenue à l'usure.The pinion and the crown are made of polyacetal, the choice of this plastic material allowing operation without lubricant supply and guaranteeing good resistance to wear.

La couronne 124 et la poulie 126 sont montées libres en rotation, avec interposition d'un roulement à billes 122, autour d'un arbre 128 dont l'axe longitudinal est aligné avec l'axe Y126. Comme les axes X114 et Y126 sont perpendiculaires, l'arbre 128 s'étend entre deux parois 1201 du support 120 qui sont verticales à la figure 2, alors que les axes X114 et Y126 sont horizontaux.The ring gear 124 and the pulley 126 are mounted free to rotate, with the interposition of a ball bearing 122, around a shaft 128 whose longitudinal axis is aligned with the axis Y126. Since the axes X114 and Y126 are perpendicular, the shaft 128 extends between two walls 1201 of the support 120 which are vertical to the figure 2 , while the X114 and Y126 axes are horizontal.

Un logement 1244 de la couronne 124 est prévu pour accueillir un nez 1264 de la poulie 126. Le logement 1244 et le nez 1264 ont des formes complémentaires et non circulaires. Ainsi, le montage de la poulie 126 sur la couronne 124 assure une solidarisation en rotation d'axe Y126 de la couronne et de la poulie, par coopération de formes.A housing 1244 of the crown 124 is provided to accommodate a nose 1264 of the pulley 126. The housing 1244 and the nose 1264 have complementary and non-circular shapes. Thus, the assembly of the pulley 126 on the ring 124 ensures a joining Y126 axis in rotation of the crown and the pulley, by cooperation of forms.

En outre, le montage de la poulie 126 sur la couronne 124 se fait par clipsage du nez 1264 de la poulie 126 dans le logement 1244, à l'aide de languettes 1262 élastiquement déformables et pourvues de becs terminaux 1266. Les becs 1266 des languettes 1262 sont clipsés dans des fentes 1242 de la couronne 124 prévues à cet effet, de part et d'autre du logement 1244. Ce clipsage de la poulie 126 sur la couronne 124 assure ainsi leur solidarisation en translation selon l'axe Y126.In addition, the mounting of the pulley 126 on the ring 124 is by clipping the nose 1264 of the pulley 126 in the housing 1244, with 1262 tabs elastically deformable and provided with end nozzles 1266. The beaks 1266 tabs 1262 are clipped into slots 1242 of the ring 124 provided for this purpose, on either side of the housing 1244. This clipping of the pulley 126 on the ring 124 thus ensures their translation solidarity along the axis Y126.

Un ressort 123 est disposé entre l'arbre 128 et une paroi 1201 du support 120. Il exerce sur cet arbre un effort élastique E1 dirigé vers l'autre paroi 1201 du logement 120A dans lequel est reçu cet arbre.A spring 123 is disposed between the shaft 128 and a wall 1201 of the support 120. It exerts on this shaft an elastic force E1 directed towards the other wall 1201 of the housing 120A in which the shaft is received.

On considère un sous-ensemble poulie 129 comprenant une poulie 126, une couronne 124, un roulement 122, un ressort 123 et un arbre 128. Chaque sous-ensemble 129, dont l'arbre 128 est l'organe central, est disposé dans un logement 120A du support 120.A pulley subassembly 129 is considered comprising a pulley 126, a ring 124, a bearing 122, a spring 123 and a shaft 128. Each subassembly 129, of which the shaft 128 is the central member, is disposed in a housing 120A of the support 120.

En configuration normale d'utilisation, une extrémité 123A du ressort est en appui contre une paroi 1201 du support 120, tandis que l'autre extrémité 123B est en contact avec le fond d'un alésage interne 1281 de l'arbre 128. Le ressort 123 exerce ainsi l'effort élastique E1 sur l'arbre 128. Le roulement 122 reposant sur un épaulement 1286 de l'arbre 128, l'arbre exerce également l'effort E1 sur le roulement 122, qui exerce lui-même cet effort E1 sur la poulie 126, au niveau d'un épaulement interne 1268 de la poulie.In the normal configuration of use, one end 123A of the spring is in abutment against a wall 1201 of the support 120, while the other end 123B is in contact with the bottom of an internal bore 1281 of the shaft 128. The spring 123 thus exerts the elastic force E1 on the shaft 128. The bearing 122 resting on a shoulder 1286 of the shaft 128, the shaft also exerts the force E1 on the bearing 122, which itself exerts this effort E1 on the pulley 126, at an internal shoulder 1268 of the pulley.

L'utilisation d'un moyen de charge élastique tel que le ressort 123 permet le rattrapage du jeu d'engrènement, entre le pignon 116 et la couronne 124, selon l'axe Y126, la couronne étant rappelée élastiquement vers le pignon.The use of an elastic load means such as the spring 123 allows the clearance of the meshing clearance between the pinion 116 and the ring gear 124 along the axis Y126, the ring being elastically biased towards the pinion.

Il est possible de clipser les extrémités 1282 et 1284 de l'arbre 128 dans des logements 1204 et 1206 ménagés dans les parois 1201 et prévus à cet effet. Les extrémités 1282 et 1284 sont à section non circulaire et les logements 1204 et 1206 ont des géométries compatibles avec la mise en place des extrémités 1282 et 1284 et avec un blocage de celles-ci en rotation autour de l'axe Y126. En outre, chaque logement 1204 est bordé par une dent élastiquement déformable 1205 qui sert d'organe de retenue de l'extrémité 1282 de l'arbre 128 en place dans le logement 1204. Cette dent s'efface lors de la mise en place de l'arbre 128 dans le logement 1204., suite à quoi l'arbre 128 est clipsé et retenu en place par la dent 1205. Une dent similaire est prévue au niveau du logement 1206 de sorte que l'extrémité 1284 de l'arbre 128 est retenue en place. En variante, un autre organe de clipsage ou plus généralement de retenue peut être prévu au niveau des logements 1204 et 1206.It is possible to clip the ends 1282 and 1284 of the shaft 128 in housings 1204 and 1206 formed in the walls 1201 and provided for this purpose. The ends 1282 and 1284 are non-circular section and the housing 1204 and 1206 have compatible geometries with the establishment of the ends 1282 and 1284 and with a blocking thereof in rotation about the axis Y126. In addition, each housing 1204 is bordered by an elastically deformable tooth 1205 which serves as a retaining member of the end 1282 of the shaft 128 in place in the housing 1204. This tooth is erased during the installation of the shaft 128 in the housing 1204., following which the shaft 128 is clipped and retained in place by the tooth 1205. A similar tooth is provided at the housing 1206 so that the end 1284 of the shaft 128 is held in place. In Alternatively, another clipping member or more generally retaining may be provided at the housing 1204 and 1206.

L'arbre 128 ainsi clipsé est immobilisé en rotation autour de l'axe Y126 et dispose d'une certaine liberté axiale. La poulie 126, dont l'arbre est maintenu à ses deux extrémités par le support 120, est stable sur son axe puisqu'elle n'est pas en porte-à-faux. D'autre part, elle tourne autour de l'arbre 128 par l'intermédiaire de deux paliers constitués d'une part par le roulement 122 et d'autre part par une zone S de contact lisse entre l'alésage intérieur de la poulie 124 et la surface externe cylindrique de l'arbre 128 située à l'opposé du roulement 122. Les deux paliers sont localisés de part et d'autre de la portion 126B d'enroulement de l'arcade 20. Il devient ainsi possible d'augmenter la longueur L126 de la portion 126B accueillant l'arcade 20, sans diminuer la stabilité de la poulie. En pratique, la longueur L126 est comprise entre 8 et 10 mm pour une poulie 126 dont la portion 126B a une diamètre de l'ordre de 9 mm. Dans ces conditions, la longueur d'enroulement de l'arcade 20 dans la configuration de la figure 8 a une valeur comprise entre 270 et 290 mm .The shaft 128 thus clipped is immobilized in rotation around the axis Y126 and has a certain axial freedom. The pulley 126, whose shaft is held at both ends by the support 120, is stable on its axis since it is not cantilevered. On the other hand, it rotates around the shaft 128 by means of two bearings formed on the one hand by the bearing 122 and on the other hand by a zone S of smooth contact between the inner bore of the pulley 124 and the cylindrical outer surface of the shaft 128 located opposite the bearing 122. The two bearings are located on either side of the winding portion 126B of the arch 20. It thus becomes possible to increase the length L126 of the portion 126B hosting the arch 20, without reducing the stability of the pulley. In practice, the length L126 is between 8 and 10 mm for a pulley 126 whose portion 126B has a diameter of the order of 9 mm. Under these conditions, the winding length of the yoke 20 in the configuration of the figure 8 has a value between 270 and 290 mm.

La longueur L126 est augmentée par rapport à la longueur axiale des poulies des dispositifs antérieurs. Cette longueur augmentée rend possible l'enroulement autour de la poulie d'une longueur plus importante d'arcade. Ceci permet ainsi d'augmenter la course possible pour les lisses 21, par rapport aux dispositifs connus. En particulier, les applications de tissage 3D multicouche qui impliquent la formation de plusieurs foules superposées ou le déplacement de la foule suivant la couche tissée sont aisément réalisables.The length L126 is increased relative to the axial length of the pulleys of the prior devices. This increased length makes it possible to wind around the pulley a longer length of arcade. This thus makes it possible to increase the possible stroke for the rails 21, compared to the known devices. In particular, multilayer 3D weaving applications which involve the formation of several superimposed crowds or the displacement of the crowd following the woven layer are easily achievable.

Le dispositif de rattrapage de jeu le long de l'axe Y126, grâce au ressort 123, précédemment décrit fonctionne de manière identique pour les seize sous-ensembles poulie 129 que contient un support 120. En particulier, il permet un auto-réglage individuel de la position axiale suivant les axes Y126 des seize couronnes 124 des sous-ensembles poulie 129 montés sur le support 120, par rapport aux seize pignons 116 des actionneurs 112 montés sur le boîtier 110, lorsque le support 120 est rapporté sur le boîtier 110.The play-catching device along the axis Y126, thanks to the spring 123, previously described, functions identically for the sixteen pulley subassemblies 129 contained in a support 120. In particular, it allows an individual self-tuning of the axial position along the axes Y126 of the sixteen crowns 124 of the pulley subassemblies 129 mounted on the support 120, with respect to the sixteen pinions 116 of the actuators 112 mounted on the housing 110, when the support 120 is attached to the housing 110.

Selon un aspect tout à fait avantageux de l'invention, les axes X114 et Y126 sont concourants. Ainsi, la distribution des tolérances de montage des pignons 116 et des sous-ensembles poulies 129 est centrée sur une configuration nominale où ces axes sont effectivement sécants. Ainsi, en cas de variation de la position de ces axes, les dentures des éléments 116 et 124 restent en prise, dans des conditions d'engrènement satisfaisantes. En d'autres termes, du fait du caractère concourant des axes X114 et Y126, le réducteur formé des éléments 116 et 124 est peu sensible aux défauts de positionnement suivant l'axe Z perpendiculaire aux axes X114 et Y126 qui se répartissent de part et d'autre de la configuration nominale où ces axes sont effectivement concourants.According to a very advantageous aspect of the invention, the X114 and Y126 axes are concurrent. Thus, the distribution of the mounting tolerances of the gears 116 and pulley subassemblies 129 is centered on a nominal configuration where these axes are effectively intersecting. Thus, in case of variation of the position of these axes, the teeth of the elements 116 and 124 remain engaged under satisfactory meshing conditions. In other words, because of the concurrent nature of the X114 and Y126 axes, the reducer formed of the elements 116 and 124 is not very sensitive to defects in positioning along the Z axis perpendicular to the X114 and Y126 axes which are distributed on either side of the nominal configuration where these axes are actually concurrent.

En variante, ces axes peuvent ne pas être concourants, ce qui est possible compte tenu du type de dentures utilisé.Alternatively, these axes may not be concurrent, which is possible given the type of teeth used.

De cette façon, le positionnement de la couronne 124 sur l'axe de l'actionneur X114 n'a pas besoin d'être précis. Le dispositif est donc compatible avec un montage sans réglage fin. La conception envisagée du dispositif permet une adaptation des conditions d'engrènement dans les directions des axes X114 et Y126, ainsi qu'une tolérance dans la direction Z.In this way, the positioning of the ring 124 on the axis of the actuator X114 need not be precise. The device is therefore compatible with a montage without fine adjustment. The envisaged design of the device allows an adaptation of the meshing conditions in the directions of the axes X114 and Y126, as well as a tolerance in the direction Z.

Les sous-ensembles poulie 129 sont supportés par le support 120 qui est une pièce distincte du boîtier 110. De cette façon, les seize sous-ensembles 129 et leur support 120 constituent un unité fonctionnelle amovible facilement démontable pour procéder à des opérations de maintenance à la fois sur les actionneurs 112 et sur les sous-ensembles poulies 129. Le montage d'un dispositif de formation de la foule conforme à l'invention se fait en équipant chaque boîtier 110 des actionneurs 112 montés dans leur logement 110A. Un pignon 116 est monté sur l'arbre 114 de chaque actionneur 112 avant ou après son montage dans le boîtier 110. Ensuite, le support 120 équipé des sous-ensembles poulies 129 est rapporté sur le boîtier 110. Puis le capot 130 est monté sur le support 120.The pulley subassemblies 129 are supported by the support 120, which is a separate piece from the housing 110. In this way, the sixteen subassemblies 129 and their support 120 form a removable functional unit that can be easily dismantled in order to carry out maintenance operations at the same time. both on the actuators 112 and on the pulley subassemblies 129. The mounting of a shedding device according to the invention is done by equipping each housing 110 of the actuators 112 mounted in their housing 110A. A pinion 116 is mounted on the shaft 114 of each actuator 112 before or after it is mounted in the housing 110. Next, the support 120 equipped with the pulley subassemblies 129 is attached to the housing 110. Then the hood 130 is mounted on the support 120.

Au cours de la mise en place du support 120 sur le boîtier 110, les couronnes 124 entrent en contact avec le chanfrein d'extrémité des dents du pignon 116 puis se décalent selon l'axe de l'arbre Y126 de poulie 126 à l'encontre de l'action du ressort 123. Ce ressort rappelle les dentures en configuration d'engrènement, sans action de l'opérateur. Une fois mis en place, les pignons 116 et couronnes 124 sont en condition de fonctionnement, sans jeu et sans qu'une opération de réglage spécifique ne soit nécessaire.During the establishment of the support 120 on the housing 110, the crowns 124 come into contact with the end chamfer of the teeth of the pinion 116 and then offset along the axis of the pulley shaft Y126 126 to the against the action of the spring 123. This spring recalls the teeth in meshing configuration, without action of the operator. Once in place, the gears 116 and crowns 124 are in operating condition, without play and without a specific adjustment operation is necessary.

L'installation d'un tel dispositif permet également le reconditionnement d'un métier à tisser de l'état de la technique en un métier à tisser selon l'invention. En pratique, le passage d'un système à poulies simples en porte à faux à un système à engrenages peut comporter les trois étapes suivantes. Dans un premier temps, et pour chaque actionneur, on remplace la poulie par un pignon 116. Ensuite, on monte le support 120 sur le boîtier 110 et le capot sur le support, comme expliqué ci-dessus.The installation of such a device also allows the reconditioning of a loom of the state of the art in a loom according to the invention. In practice, the transition from a system with simple pulleys cantilevered to a gear system can comprise the following three steps. In a first step, and for each actuator, the pulley is replaced by a pinion 116. Then, the support 120 is mounted on the housing 110 and the cover on the support, as explained above.

En variante, l'invention peut être mise en oeuvre avec des engrenages coniques. Ces engrenages à axes concourants requièrent pour fonctionner dans des conditions optimales, la coïncidence des sommets des cônes de denture. Le dispositif de rattrapage du jeu suivant l'axe de rotation de la poulie permet un ajustement satisfaisant du jeu.Alternatively, the invention can be implemented with bevel gears. These gears with concurrent axes require to operate under conditions optimal, the coincidence of the tops of the tooth cones. The catch-up device along the axis of rotation of the pulley allows a satisfactory adjustment of the game.

L'invention peut être également mise en oeuvre avec des engrenages hypoïdes c'est-à-dire avec des engrenages gauche en spirale. Les pignons et couronnes ont des dents coniques mais ne sont pas nécessairement en rotation autour d'axes concourants.The invention can also be implemented with hypoid gears that is to say with spiral left gears. The gears and crowns have conical teeth but are not necessarily in rotation around intersecting axes.

Claims (11)

  1. A shed forming device (1) for a weaving machine (M) comprising at least one rotary electric actuator (112) provided for winding around a pulley (126) of the funicular element (20) controlling at least one heddle (21), an output shaft (114) of the actuator (112) rotating around a first axis (X114), characterized in that the shaft of the actuator (114) is provided with a pinion (116), meshing with a toothed crown (124) secured to the pulley (126) and rotatable therewith around a second axis (Y126) perpendicular to the first axis (X114).
  2. The device according the previous claim, characterized in that the crown (124) is movable along the second axis and in that the device comprises means (123) elastically forcing (E1) the crown (124) toward the pinion (116), along the second axis (Y126).
  3. The device according to one of the preceding claims, characterized in that the shaft of the actuator (X114) and the axis of the pulley (Y126) are concurrent.
  4. The device according to one of claims 1 or 2, characterized in that the pinion (116) has a straight toothing and the crown (124) has a toothing adapted to that of the pinion (116).
  5. The device according to one of claims 1 or 2, characterized in that the actuator (112) is mounted in a housing (110), and in that the pulley (126) and the crown (124) are rotatably mounted around the second axis (Y126) in a holder (120) that is separate and separable from the housing (110).
  6. The device according to claim 5, characterized in that it comprises several actuators (112) mounted in a same housing (110), with their first respective axes (X114) parallel to each other, and several subassemblies (129) each comprising a pulley (126) and a crown (124), in a number equal to the number of actuators (112) mounted in the housing (110), and in that said subassemblies being mounted in the same holder (120) separate and separable from the housing (110), with their second respective axes (Y126) of rotation perpendicular to the first axes of the actuators (X114).
  7. The device according to claim 5, characterized in that the crown (124) and the pulley (126) are rotatably mounted around a shaft (128) aligned along the second axis (Y126) and clipped on the holder.
  8. The device according to claim 7, characterized in that the means (123) for elastically forcing (E1) the crown (124) toward the pinion (116) along the second axis (Y126) act between the shaft (128) and the holder (120).
  9. The device according to one of claims 1 or 2, characterized in that the number of teeth of the pinion (116) is smaller than the number of teeth of the crown (124).
  10. The device according to one of claims 1 or 2, characterized in that the crown (124) is clipped and immobilized in rotation by cooperation of shapes (1244, 1264) on the pulley (126).
  11. A weaving machine (M) comprising a weaving shed device (1) according to one of the preceding claims.
EP13168912.7A 2012-05-24 2013-05-23 Shedding device and loom provided with such a device Active EP2666893B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1254794A FR2990958B1 (en) 2012-05-24 2012-05-24 CROWN FORMING DEVICE AND WOVEN WEAVING EQUIPPED WITH SUCH A DEVICE

Publications (2)

Publication Number Publication Date
EP2666893A1 EP2666893A1 (en) 2013-11-27
EP2666893B1 true EP2666893B1 (en) 2014-12-03

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Family Applications (1)

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EP13168912.7A Active EP2666893B1 (en) 2012-05-24 2013-05-23 Shedding device and loom provided with such a device

Country Status (8)

Country Link
US (1) US9121116B2 (en)
EP (1) EP2666893B1 (en)
KR (1) KR102059605B1 (en)
CN (1) CN103422214B (en)
BR (1) BR102013012775B1 (en)
CA (1) CA2817159C (en)
FR (1) FR2990958B1 (en)
RU (1) RU2628933C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2990958B1 (en) * 2012-05-24 2014-06-13 Staubli Sa Ets CROWN FORMING DEVICE AND WOVEN WEAVING EQUIPPED WITH SUCH A DEVICE
BE1022969B1 (en) * 2015-04-22 2016-10-24 Nv Michel Van De Wiele DEVICE FITTED WITH PATTERN-CONTROLLED COMPONENTS AND TEXTILE MACHINE INCLUDING SUCH DEVICE
FR3054245B1 (en) * 2016-07-22 2018-08-31 Staubli Faverges MOBILE TRAINING MACHINE AND WEAVING MACHINE COMPRISING SUCH A MACHINE.
CN209555469U (en) * 2017-04-28 2019-10-29 爱世伴公司 The heddle (heald) system and actuator system of loom and loom
FR3103235B1 (en) * 2019-11-15 2021-11-26 Staubli Sa Ets Bearing for a shed forming machine or motion transmission system, armor mechanism lever comprising such a bearing and a shed forming machine comprising such a lever or such a bearing

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FR2772792B1 (en) * 1997-12-24 2000-01-28 Staubli Sa Ets ELECTRIC ACTUATOR POSITIONING BOX FOR CROWD FORMATION AND WEAVING
FR2794140B1 (en) * 1999-05-31 2001-07-13 Staubli Sa Ets JACQUARD WEAPON MECHANICS AND WEAVING MACHINE EQUIPPED WITH SUCH MECHANICS
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FR2856704B1 (en) * 2003-06-25 2005-12-09 Staubli Sa Ets ELECTRICAL ROTARY ACTUATOR, ARMOR MECHANICAL FOR FORMING THE CROWD EQUIPPED WITH SUCH ACTUATOR AND WEAVING EQUIPPED WITH SUCH A MECHANICAL
FR2856705B1 (en) * 2003-06-30 2005-08-05 Staubli Sa Ets ARMOR MECHANICS OF THE JACQUART TYPE, WEAVING EQUIPPED WITH SUCH A MECHANICAL AND METHODS OF ASSEMBLING AND DISASSEMBLING SUCH A MECHANICAL
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RU107162U1 (en) * 2011-04-05 2011-08-10 Государственное образовательное учреждение высшего профессионального образования "Ивановская государственная текстильная академия" (ИГТА) WEAVING MACHINE
FR2990958B1 (en) * 2012-05-24 2014-06-13 Staubli Sa Ets CROWN FORMING DEVICE AND WOVEN WEAVING EQUIPPED WITH SUCH A DEVICE

Also Published As

Publication number Publication date
CN103422214B (en) 2016-04-20
US9121116B2 (en) 2015-09-01
RU2628933C2 (en) 2017-08-22
CN103422214A (en) 2013-12-04
KR102059605B1 (en) 2019-12-26
RU2013123298A (en) 2014-11-27
EP2666893A1 (en) 2013-11-27
CA2817159C (en) 2019-08-20
US20130312867A1 (en) 2013-11-28
BR102013012775A2 (en) 2015-07-07
CA2817159A1 (en) 2013-11-24
KR20130132307A (en) 2013-12-04
BR102013012775B1 (en) 2021-08-10
FR2990958A1 (en) 2013-11-29
FR2990958B1 (en) 2014-06-13

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