EP0933456A1 - Harness cord fixing method, shedding mechanism and weaving loom - Google Patents

Harness cord fixing method, shedding mechanism and weaving loom Download PDF

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Publication number
EP0933456A1
EP0933456A1 EP98420238A EP98420238A EP0933456A1 EP 0933456 A1 EP0933456 A1 EP 0933456A1 EP 98420238 A EP98420238 A EP 98420238A EP 98420238 A EP98420238 A EP 98420238A EP 0933456 A1 EP0933456 A1 EP 0933456A1
Authority
EP
European Patent Office
Prior art keywords
funicular
pulley
funicular element
winding
actuator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98420238A
Other languages
German (de)
French (fr)
Other versions
EP0933456B1 (en
Inventor
Pierre Bourgeaux
Jean Paul Froment
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Staubli Faverges SCA
Original Assignee
Staubli Faverges SCA
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Publication date
Application filed by Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP0933456A1 publication Critical patent/EP0933456A1/en
Application granted granted Critical
Publication of EP0933456B1 publication Critical patent/EP0933456B1/en
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S254/00—Implements or apparatus for applying pushing or pulling force
    • Y10S254/90—Cable pulling drum having wave motion responsive actuator for operating drive or rotation retarding means

Definitions

  • the invention relates to a method for mounting an element. funicular and to a crowd training device on a weaving loom for controlling the mechanical arcades of Jacquard type armor.
  • Jacquard type armor mechanics it is known to cause, in phase opposition, two frames carrying each a multiplicity of claws or horizontal knives able to move the hooks connected to the arches vertically by a pulley or muffle mechanism.
  • Devices mechanical or electromagnetic are provided to immobilize these hooks along their vertical travel. This kind of known device requires significant power for the operation of claw frames, this power being supplied by the motor shaft of the loom, which induces a oversizing of this trade.
  • a rotary motor such than a stepper motor or a servo motor to control linearly a cord belonging to a loom.
  • the cord is designed to be surrounded, like a capstan, around a part of the rotary actuator. Given the slippages inherent in this kind of winding, it is not possible to precisely control the position of the cord. In in addition, the assembly and disassembly of the cord are difficult, and its positioning is imprecise.
  • the invention relates to a method of mounting of a funicular element in a training device of the crowd on a Jacquard type loom, characterized in that it consists in fixing at least one end of the funicular element on a pulley, able to receive it in winding on at least one turn and driven by the rotor of a electric rotary actuator, and to have the means to removable connection between the funicular element and the actuator.
  • the process of the invention it is possible to constitute a crowd training system by assembling successively at least one end of the funicular elements with rotors belonging to various rotary actuators electric.
  • the removable nature of the connection made thanks the method of the invention allows easy disassembly of the device, in particular for maintenance operations.
  • the fact that one end of the funicular element is fixed relative to the element driven in rotation of the actuator guarantees a good training accuracy, which is essential for effective crowd training.
  • the method consists in joining together one end of the funicular with a first member and to removably mount this first member on a second member secured to the actuator rotor. So the connection between the actuator rotor and the end of the funicular element is made by assembling these first and second organs.
  • the invention also relates to a device for implement the method described above and, more specifically, a crowd training device on a Jacquard type loom, this device comprising at less an electric rotary actuator provided for the drive at least one funicular element around an element winding, characterized in that at least one end of the funicular element is fixed on a pulley, suitable for receiving the funicular element in winding on at least one turn and driven in rotation by the actuator, and in that means of removable connection are arranged between the funicular element and the actuator.
  • the removable connection means comprise a first member provided with at least one retaining means the end of the funicular, and a second organ integral with a rotor of said actuator, said first and second members being provided to be assembled so removable.
  • the end of the funicular element can be assembled on the first organ in an assembly station provided for this purpose, while the second member is mounted on the actuator rotor during of the manufacture of this actuator.
  • the final assembly of first and second members can be produced during manufacture of the crowd training system, possibly on the site of use of the loom.
  • This aspect of the invention makes it possible to envisage replacing the harness complete with a Jacquard type weave mechanism by dismantling the different first organs, the corresponding second organs staying in place on the actuator and receiving new ones first organs connected to funicular elements, such as arches, belonging to a new harness.
  • the second organ is provided with an elastic element for hooking the first organ.
  • This structure allows a removable fixing first and second organs.
  • the first and second members are provided with polarizing means allowing their assembly in a suitable relative position.
  • This aspect of the invention facilitates the work of an operator when installing a large number of devices in accordance with the invention, insofar as it must not systematically check the correct positioning of the first organ as far as he was able to mount it on the second organ corresponding. This guarantees precise control of the element funicular.
  • the device comprises means for fixing at least two ends of funicular element (s).
  • s funicular element
  • the ends can be made for the ends belong to a single funicular element arranged around of a deflection pulley resiliently loaded so as to exert a tension force on the funicular element, these ends being intended to be wound in opposite directions on the pulley.
  • the two ends belong to separate funicular elements linked to individual tensioning means.
  • the two ends of the funicular element have a winding zone common on the winding assembly. This aspect of the invention makes it possible to optimize the dimensioning of the assembly winding.
  • the funicular element controls, by a first strand, the position of the chain wires while its second strand crosses a layer of chain son between the winding pulley and the return pulley.
  • the ends of funicular element (s) each control the position of an eyelet for passing a chain thread.
  • the pulley is provided with a helical groove for guiding the element funicular during winding.
  • the invention also relates to a weaving loom equipped a crowd training device as previously described. This job is simpler to implement and maintain that the devices of the prior art and allows a wire-to-wire control of a Jacquard loom harness with a significantly improved performance compared to technique known.
  • the distribution of the orientation of the removable connection means with respect to the polarities of the magnetic elements of the actuators is irregular or regularly shifted.
  • the electric rotary actuator 1, shown in the figure 1, is intended to ensure the winding, on a pulley 2, of a yoke 3 connected to one or more mechanical chain wires of Jacquard type armor.
  • Pulley 2 can receive yoke 3 wound on at least one turn because it has a peripheral winding surface continues 360 °. It can also receive the arch 3 on a fraction of a turn.
  • the winding of the arch on the pulley 2 can be helical or spiral.
  • the actuator 1 is a two-phase actuator. It comprises two stator elements 4 and 5, generally aligned and able to cooperate with a rotor 6 formed from a tube 7, preferably made of non-magnetic material such as, for example, brass.
  • the tube 7, which extends along an axis XX ′, contains two permanent magnets 8, 9, arranged opposite the two elements 4 and 5.
  • These elements 4 and 5 comprise windings 4 a and 5 a electrically conductive wire, such as copper wire, wound around stacks 4 b and 5 b of magnetically conductive sheets.
  • the shape of the stacks 4 b and 5 b is such that they form a circular housing 10 for receiving the tube 7.
  • the size of the housing 10 defines the air gap of the stator elements 4 and 5 relative to the rotor 6.
  • the tube 7 receives a generally cylindrical hub 20, which comprises an axial part 20 has force fitted inside the tube 7.
  • the hub 20 is intended to removably receive a roller 21 formed by a cylindrical winding part 21 a and an end part or flange 21 b .
  • the hub 20 is also provided with a part 20 b forming a flange, so that when the roller 21 is in place on the hub 20 as shown in FIG. 3, these parts form the pulley 2 bordered by the two flanges 20 b and B.
  • the hub 20 is provided with an elastic hook 20 c able to penetrate into a hollowed-out central part 21 c of the roller 21.
  • the hub 20 also carries a ramp 20 d intended to cooperate with a groove 21 d formed in the wall of the part 21 c of the roller 21, so that it can be mounted on the hub 20 in a single position.
  • the ramp 20 d also participates in the rotational drive of the roller 21 by playing the role of a key.
  • the arch 3 is mounted on the roller 21 forming at its end 3 has a node 3 b.
  • a housing 21 e is provided in the roller 21 to receive the end 3 a of the arch 3, the housing 21 e having an outlet 21 f of larger diameter making it possible to accommodate the node 3 b .
  • the arch 3 crosses the hollow central part 21 c of the roller 21 and passes through a slot 20 e , formed between the hook 20 c and the main part of the hub 20 in order to give the hook 20 c the elasticity necessary for its function.
  • the arch 3 is thus firmly held in position while the roller 21 is easily placed on the hub 20, by a simple pressure in the direction of the shaft 7.
  • the actuator 1 visible in Figure 1 can advantageously be installed in a battery, as appears in Figure 4, that is to say by having a large number of actuators side by side inside a structure 40 defining compartments or boxes 40 a for receiving the actuators.
  • the actuators are inserted into the compartments 40 a in a direction F 1 and can be extracted therefrom by means of a pierced tab 41 provided on the front face.
  • a tube 57 belonging to the rotor of an electric rotary actuator receives, at its end, a hub 70 of which an axial part 70 a is intended to be glued inside the tube 57.
  • a flange 71 is provided to be attached to the hub 70 so as to form a winding pulley 52 of the upper end 53 a of an arch 53.
  • the end 53 a of the arch 53 is received in a housing 71 e of the flange 71 and glued therein.
  • the lower end 53 b of the yoke 53 is connected to two smooth 81 and 81 'respectively equipped with an eyelet 81 a or 81' a passage of a warp yarn.
  • the heddles 81 and 81 ′ pass through a wire guide 82 located near the actuator and a grading board 83.
  • the external radial surface 70 b of the hub 70 constitutes the winding surface of the pulley 52 and is provided with a helical groove 70 c for guiding the yoke 53 during winding, over a fraction of a turn or over several turns, as needed.
  • the flange 71 comprises an axial part 71 a intended to penetrate into a housing 70 d of the hub 70 for a removable assembly of the flange 71 on the hub 70.
  • the housing 70 d comprises ribs or notches of shape complementary to that ribs or recesses provided on the outer surface of the portion 71a, so as to ensure the rotational drive of the flange 71 by the hub 70.
  • a key device may also be considered.
  • means are provided for angular indexing, training in rotation and the axial maintenance of the pulley 52.
  • the essential elements of the pulley 52, and in particular the winding surface 70 b are constituted by the hub 70 while the part secured to the end 53 a of the yoke 53 is reduced to the single flange 71.
  • a stud can be formed on the roller 21 or the flange 71, the end 3 a or 53 a of the arch then forming a loop provided for be arranged around this nipple.
  • Other retaining means can also be formed on the roller 21 or the flanges 71 to cooperate with the end of the yoke.
  • the actuator includes a hub attached by any suitable means to the rotor an actuator, while the upper end of the yoke or another funicular is simply tied on it hub which includes, for example, a hole for receiving this end.
  • the upper end of the funicular element can be removably attached to a element rotated by the electric rotary actuator.
  • the elements similar to those of the embodiment of FIGS. 1 to 4 bear identical references increased by 100.
  • the two ends 103 a and 103 b of a cable 103 forming a smooth and provided with an eyelet 103 c for passing a chain wire 132, are made integral with a hub 120 forming a pulley 102 and fixed on a tube 107 belonging to the rotor an electric rotary actuator.
  • the hub 120 comprises a flange 120 a defining two zones 120 b and 120 c for winding the ends 103 a and 103 b of the cable 103.
  • a grouting board 122 is provided for guiding the cable 103 below the hub 120 and comprises two orifices 122 a and 122 b for passage of the cable 103.
  • the cable 103 also passes around a mad pulley 123 held, with respect to a fixed frame 124, by a return spring 125 exerting on the pulley 123 a vertical force F 3 directed downwards, so that the pulley exerts on the cable 103 a tension force.
  • the ends 103 a and 103 b of the cable 103 are wound on the hub 120 in two different directions, so that the winding of one of these ends corresponds to the unwinding of the other end and vice versa.
  • the hub rotation movement 120 around the axis XX ' induces a vertical oscillating movement as represented by the arrow F 4 of the eyelet 103 c .
  • the cable 103 carries, on each strand, an eyelet for the passage of a chain, on either side of the pulley 123.
  • the movements of the eyelets are in phase opposition.
  • the hub 220 is bordered by two flanges 220 a , 220 b at the level of which the ends 203 a and 203 b are fixed, which are wound on a central zone 220 c of the hub 220.
  • the strands 203 c and 203 d of the assembly 203 are separated by a distance d corresponding substantially to the spacing of the orifices 222 a and 222 b of a grazing board 222.
  • These orifices guide the strands 203 c and 203 d above a chain wire 232 passing through an eyelet 231 a of the stringer 231.
  • the eyelet 231 a can take the two positions represented respectively by the positions in solid lines and in mixed lines of chain wire 232.
  • a mad pulley 223 is intended to be surrounded by the lower part of the yoke 230 while being connected to the frame of the machine 224 by a spring 225.
  • the spring 225 exerts on the pulley 223 a force F 5 of tension of the arch 230.
  • the rotation of the hub 220 around the axis XX 'of the tube 207 induces the unwinding of one of the ends of the assembly 203 and the corresponding winding of the other end.
  • the distance d is kept generally constant during the rotational movements of the hub 220.
  • the surface 220 c of the hub 220 is a zone of common winding of the ends 203 a and 203 b , it being understood that 'a distance d is permanently maintained between these ends. This makes it possible to provide the hub 220 approximately twice as short as the hub 120 of FIG. 6 and to prevent the yoke 203 from being deflected excessively at the level of the orifices 222 a and 222 b .
  • the cable of this fifth embodiment could also wear two eyelets which would be used to order two separate warp threads, as in the realization of figure 7.
  • the funicular element 103 or 203 runs on a single deflection pulley 123 or 223, which is particularly simple from a structural point of view and induces low inertia.
  • the funicular element 103 or 203 controls, by the eyelet 103 c or 231 a that it carries, on a first strand, the position of the chain wires 132 or 232, while its second strand also crosses the web of son chain.
  • the funicular element can be produced by a metallic wire, preferably cylindrical, thin and smooth.
  • helical grooves can be provided in the zones 120 b , 120 c and 220 c of the hubs 120 and 220.
  • the fixing of the ends of the funicular element to the hubs guarantees precise guiding of these elements, in particular when it is a Jacquard loom arch.
  • the removable nature of this attachment obtained, for example, by systems similar to those of the previous embodiments, gives the assembly a good dismantling ability.
  • the pulleys 102 and 202 could, in particular, be made in two parts equivalent to the members 20 and 21 or 70 and 71.
  • the two ends of the funicular element (s) have been shown as winding in opposite directions, which makes it possible to obtain opposite movements of connected eyelets at these ends.
  • FIG. 7 it is however possible to wind two or more of two ends of funicular elements in the same direction on a pulley, which makes it possible to control several eyelets in phase, as in the mode of embodiment of Figure 5, without using a connector of the type shown at the lower end 53 b of the yoke 53.
  • a loom which generally includes a large number of funicular elements
  • we assemble funicular elements on the pulleys so that the orientation of the removable connection means with respect to polarities of the magnetic elements of the different actuators, such as rotor magnets or stator elements, a irregular distribution. It is also possible to provide an orientation regularly shifted by one step relatively weak, of the order of 3 to 15 °. In both cases, this avoids mechanical or magnetic resonance of the device.

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  • Textile Engineering (AREA)
  • Looms (AREA)
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Abstract

Procédé de montage d'un élément funiculaire (3) dans un dispositif de formation de la foule sur un métier à tisser de type Jacquard, caractérisé en ce qu'il consiste à fixer au moins une extrémité (3a) de l'élément funiculaire sur une poulie (2), apte à recevoir cet élément funiculaire en enroulement sur au moins un tour et entraînée en rotation par un actionneur rotatif électrique, et à disposer des moyens (20, 21) de connection amovible entre l'élément funiculaire et l'actionneur. Le dispositif comprend des moyens (20, 21) de connection amovible de l'extrémité (3a) de l'élément funiculaire (3) sur la poulie (2). <IMAGE>Method for mounting a funicular element (3) in a crowd formation device on a Jacquard type loom, characterized in that it consists in fixing at least one end (3a) of the funicular element on a pulley (2), able to receive this funicular element in winding over at least one turn and driven in rotation by an electric rotary actuator, and to have means (20, 21) for removable connection between the funicular element and the actuator. The device comprises means (20, 21) for removable connection of the end (3a) of the funicular element (3) on the pulley (2). <IMAGE>

Description

L'invention a trait à un procédé de montage d'un élément funiculaire et à un dispositif de formation de la foule sur un métier à tisser pour la commande des arcades d'une mécanique d'armure de type Jacquard.The invention relates to a method for mounting an element. funicular and to a crowd training device on a weaving loom for controlling the mechanical arcades of Jacquard type armor.

Dans les mécaniques d'armure de type Jacquard, il est connu d'entraíner, en opposition de phase, deux cadres portant chacun une multiplicité de griffes ou couteaux horizontaux aptes à déplacer verticalement les crochets reliés aux arcades par un mécanisme à poulies ou à moufle. Des dispositifs mécaniques ou électro-magnétiques sont prévus pour immobiliser ces crochets le long de leur course verticale. Ce genre de dispositif connu nécessite une puissance importante pour la manoeuvre des cadres de griffes, cette puissance étant fournie par l'arbre moteur du métier à tisser, ce qui induit un surdimensionnement de ce métier.In Jacquard type armor mechanics, it is known to cause, in phase opposition, two frames carrying each a multiplicity of claws or horizontal knives able to move the hooks connected to the arches vertically by a pulley or muffle mechanism. Devices mechanical or electromagnetic are provided to immobilize these hooks along their vertical travel. This kind of known device requires significant power for the operation of claw frames, this power being supplied by the motor shaft of the loom, which induces a oversizing of this trade.

Il est également connu d'utiliser un moteur rotatif tel qu'un moteur pas à pas ou un servomoteur pour commander linéairement une cordelette appartenant à un métier à tisser. Dans ce dispositif connu, la cordelette est prévue pour être entourée, à la manière d'un cabestan, autour d'une partie mobile de l'actionneur rotatif. Compte tenu des glissements inhérents à ce genre d'enroulement, il n'est pas possible de commander avec précision la position de la cordelette. En outre, le montage et le démontage de la cordelette sont difficiles, et son positionnement est peu précis.It is also known to use a rotary motor such than a stepper motor or a servo motor to control linearly a cord belonging to a loom. In this known device, the cord is designed to be surrounded, like a capstan, around a part of the rotary actuator. Given the slippages inherent in this kind of winding, it is not possible to precisely control the position of the cord. In in addition, the assembly and disassembly of the cord are difficult, and its positioning is imprecise.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un procédé de montage qui permet une commande précise et efficace d'un élément funiculaire tel qu'une arcade de mécanique d'armure du type Jacquard.It is to these disadvantages that we hear more particularly remedy the invention by proposing an assembly method which allows precise and efficient control of a funicular such as a Jacquard type armor mechanic arcade.

Dans cet esprit, l'invention concerne un procédé de montage d'un élément funiculaire dans un dispositif de formation de la foule sur un métier à tisser de type Jacquard, caractérisé en ce qu'il consiste à fixer au moins une extrémité de l'élément funiculaire sur une poulie, apte à le recevoir en enroulement sur au moins un tour et entraínée par le rotor d'un actionneur rotatif électrique, et à disposer des moyens de connection amovible entre l'élément funiculaire et l'actionneur. In this spirit, the invention relates to a method of mounting of a funicular element in a training device of the crowd on a Jacquard type loom, characterized in that it consists in fixing at least one end of the funicular element on a pulley, able to receive it in winding on at least one turn and driven by the rotor of a electric rotary actuator, and to have the means to removable connection between the funicular element and the actuator.

Grâce au procédé de l'invention, il est possible de constituer un dispositif de formation de la foule en assemblant successivement au moins une extrémité des éléments funiculaires avec des rotors appartenant à divers actionneurs rotatifs électriques. Le caractère amovible de la liaison réalisée grâce au procédé de l'invention permet un démontage aisé du dispositif, en particulier pour des opérations de maintenance. Le fait qu'une extrémité de l'élément funiculaire est fixée par rapport à l'élément entraíné en rotation de l'actionneur garantit une bonne précision de l'entraínement, ce qui est essentiel pour une formation efficace de la foule.Thanks to the process of the invention, it is possible to constitute a crowd training system by assembling successively at least one end of the funicular elements with rotors belonging to various rotary actuators electric. The removable nature of the connection made thanks the method of the invention allows easy disassembly of the device, in particular for maintenance operations. The fact that one end of the funicular element is fixed relative to the element driven in rotation of the actuator guarantees a good training accuracy, which is essential for effective crowd training.

Selon un aspect avantageux, le procédé consiste à solidariser une extrémité de l'élément funiculaire avec un premier organe et à monter, de façon amovible, ce premier organe sur un second organe solidaire du rotor de l'actionneur. Ainsi, la connexion entre le rotor de l'actionneur et l'extrémité de l'élément funiculaire est réalisée en assemblant ces premier et second organes.According to an advantageous aspect, the method consists in joining together one end of the funicular with a first member and to removably mount this first member on a second member secured to the actuator rotor. So the connection between the actuator rotor and the end of the funicular element is made by assembling these first and second organs.

L'invention concerne également un dispositif permettant de mettre en oeuvre le procédé précédemment décrit et, plus spécifiquement, un dispositif de formation de la foule sur un métier à tisser de type Jacquard, ce dispositif comprenant au moins un actionneur rotatif électrique prévu pour l'entraínement d'au moins un élément funiculaire autour d'un élément d'enroulement, caractérisé en ce qu'au moins une extrémité de l'élément funiculaire est fixée sur une poulie, apte à recevoir l'élément funiculaire en enroulement sur au moins un tour et entraínée en rotation par l'actionneur, et en ce que des moyens de connection amovible sont disposés entre l'élément funiculaire et l'actionneur.The invention also relates to a device for implement the method described above and, more specifically, a crowd training device on a Jacquard type loom, this device comprising at less an electric rotary actuator provided for the drive at least one funicular element around an element winding, characterized in that at least one end of the funicular element is fixed on a pulley, suitable for receiving the funicular element in winding on at least one turn and driven in rotation by the actuator, and in that means of removable connection are arranged between the funicular element and the actuator.

Selon un premier aspect avantageux du dispositif de l'invention, les moyens de connection amovible comprennent un premier organe pourvu d'au moins un moyen de retenue de l'extrémité de l'élément funiculaire, et un second organe solidaire d'un rotor dudit actionneur, lesdits premier et second organes étant prévus pour être assemblés de façon amovible. Grâce à cet aspect de l'invention, l'extrémité de l'élément funiculaire peut être assemblée sur le premier organe dans une station de montage prévue à cet effet, alors que le second organe est monté sur le rotor de l'actionneur au cours de la fabrication de cet actionneur. L'assemblage final des premier et second organes peut être réalisé lors de la fabrication du dispositif de formation de la foule, éventuellement sur le site d'utilisation du métier à tisser. Cet aspect de l'invention permet d'envisager le remplacement du harnais complet d'une mécanique d'armure du type Jacquard en démontant les différents premiers organes, les seconds organes correspondants restant en place sur l'actionneur et reçevant de nouveaux premiers organes reliés à des éléments funiculaires, tels que des arcades, appartenant à un nouveau harnais.According to a first advantageous aspect of the device the invention, the removable connection means comprise a first member provided with at least one retaining means the end of the funicular, and a second organ integral with a rotor of said actuator, said first and second members being provided to be assembled so removable. Thanks to this aspect of the invention, the end of the funicular element can be assembled on the first organ in an assembly station provided for this purpose, while the second member is mounted on the actuator rotor during of the manufacture of this actuator. The final assembly of first and second members can be produced during manufacture of the crowd training system, possibly on the site of use of the loom. This aspect of the invention makes it possible to envisage replacing the harness complete with a Jacquard type weave mechanism by dismantling the different first organs, the corresponding second organs staying in place on the actuator and receiving new ones first organs connected to funicular elements, such as arches, belonging to a new harness.

Selon un autre aspect avantageux de l'invention, le second organe est pourvu d'un élément élastique d'accrochage du premier organe. Cette structure permet une fixation amovible des premier et second organes.According to another advantageous aspect of the invention, the second organ is provided with an elastic element for hooking the first organ. This structure allows a removable fixing first and second organs.

Selon un autre aspect avantageux de l'invention, les premier et second organes sont pourvus de moyens de détrompage permettant leur assemblage dans une position relative adaptée. Cet aspect de l'invention facilite le travail d'un opérateur lors de la mise en place d'un grand nombre de dispositifs conformes à l'invention, dans la mesure où il ne doit pas systématiquement vérifier le bon positionnement du premier organe pour autant qu'il a pu le monter sur le second organe correspondant. Ceci garantit une commande précise de l'élément funiculaire.According to another advantageous aspect of the invention, the first and second members are provided with polarizing means allowing their assembly in a suitable relative position. This aspect of the invention facilitates the work of an operator when installing a large number of devices in accordance with the invention, insofar as it must not systematically check the correct positioning of the first organ as far as he was able to mount it on the second organ corresponding. This guarantees precise control of the element funicular.

Selon certains modes de réalisation de l'invention, le dispositif comprend des moyens de fixation d'au moins deux extrémités d'élément(s) funiculaire(s) . Ceci permet une commande des lisses d'un métier Jacquard avec une grande précision. Dans ce cas, on peut prévoir que les extrémités appartiennent à un unique élément funiculaire disposé autour d'une poulie de renvoi chargée élastiquement de façon à exercer un effort de tension sur l'élément funiculaire, ces extrémités étant prévues pour être enroulées en sens opposés sur la poulie. On peut également prévoir que les deux extrémités appartiennent à des éléments funiculaires distincts reliés à des moyens de mise en tension individuels. Avantageusement, les deux extrémités de l'élément funiculaire ont une zone d'enroulement commune sur l'ensemble d'enroulement. Cet aspect de l'invention permet d'optimiser le dimensionnement de l'ensemble d'enroulement. Dans certaines variantes de réalisation, l'élément funiculaire commande, par un premier brin, la position des fils de chaíne alors que son second brin traverse une nappe de fils de chaíne entre la poulie d'enroulement et la poulie de renvoi. Selon certains modes de réalisation, les extrémités d'élément(s) funiculaire(s) commandent chacune la position d'un oeillet de passage d'un fil de chaíne.According to certain embodiments of the invention, the device comprises means for fixing at least two ends of funicular element (s). This allows a order of heddles from a Jacquard loom with great precision. In this case, provision can be made for the ends belong to a single funicular element arranged around of a deflection pulley resiliently loaded so as to exert a tension force on the funicular element, these ends being intended to be wound in opposite directions on the pulley. We can also provide that the two ends belong to separate funicular elements linked to individual tensioning means. Advantageously, the two ends of the funicular element have a winding zone common on the winding assembly. This aspect of the invention makes it possible to optimize the dimensioning of the assembly winding. In some variant embodiments, the funicular element controls, by a first strand, the position of the chain wires while its second strand crosses a layer of chain son between the winding pulley and the return pulley. According to certain embodiments, the ends of funicular element (s) each control the position of an eyelet for passing a chain thread.

Selon un autre aspect avantageux de l'invention, applicable quel que soit le mode de réalisation considéré, la poulie est pourvue d'une rainure hélicoïdale de guidage de l'élément funiculaire en cours d'enroulement.According to another advantageous aspect of the invention, applicable whatever the embodiment considered, the pulley is provided with a helical groove for guiding the element funicular during winding.

L'invention concerne également un métier à tisser équipé d'un dispositif de formation de la foule tel que précédemment décrit. Ce métier est plus simple à mettre en oeuvre et à entretenir que les dispositifs de l'art antérieur et permet une commande fil à fil d'un harnais d'un métier Jacquard avec un rendement sensiblement amélioré par rapport à la technique connue. Avantageusement, la répartition de l'orientation des moyens de connection amovible par rapport aux polarités des éléments magnétiques des actionneurs est irrégulière ou régulièrement décalée.The invention also relates to a weaving loom equipped a crowd training device as previously described. This job is simpler to implement and maintain that the devices of the prior art and allows a wire-to-wire control of a Jacquard loom harness with a significantly improved performance compared to technique known. Advantageously, the distribution of the orientation of the removable connection means with respect to the polarities of the magnetic elements of the actuators is irregular or regularly shifted.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaítront plus clairement à la lumière de la description qui va suivre de cinq modes de réalisation d'un dispositif de formation de la foule sur 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 coupe longitudinale d'un actionneur utilisable avec le dispositif de l'invention ;
  • la figure 2 montre, en perspective éclatée, une tête d'extrémité du rotor de l'actionneur de la figure 1 ;
  • la figure 3 est une coupe selon la ligne III-III à la figure 2, les éléments étant montés ;
  • la figure 4 illustre un exemple de mise en place d'une extrémité d'arcade avec des actionneurs du type de la figure 1,
  • la figure 5 est une coupe analogue à la figure 3 pour un dispositif conforme à un second mode de réalisation de l'invention,
  • la figure 6 est une représentation schématique de principe d'un dispositif conforme à un troisième mode de réalisation de l'invention,
  • la figure 7 est une vue analogue à la figure 6 pour un dispositif conforme à un quatrième mode de réalisation de l'invention et
  • la figure 8 est une vue analogue à la figure 6 pour un dispositif conforme à un cinquième mode de réalisation de l'invention.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of five embodiments of a crowd training device on a weaving loom in accordance with its principle. , given solely by way of example and with reference to the appended drawings in which:
  • Figure 1 is a longitudinal section of an actuator usable with the device of the invention;
  • Figure 2 shows, in exploded perspective, an end head of the rotor of the actuator of Figure 1;
  • Figure 3 is a section along line III-III in Figure 2, the elements being mounted;
  • FIG. 4 illustrates an example of setting up a yoke end with actuators of the type of FIG. 1,
  • FIG. 5 is a section similar to FIG. 3 for a device according to a second embodiment of the invention,
  • FIG. 6 is a schematic representation of the principle of a device according to a third embodiment of the invention,
  • FIG. 7 is a view similar to FIG. 6 for a device according to a fourth embodiment of the invention and
  • Figure 8 is a view similar to Figure 6 for a device according to a fifth embodiment of the invention.

L'actionneur rotatif électrique 1, représenté à la figure 1, est destiné à assurer l'enroulement, sur une poulie 2, d'une arcade 3 reliée à un ou plusieurs fils de chaíne d'une mécanique d'armure du type Jacquard.The electric rotary actuator 1, shown in the figure 1, is intended to ensure the winding, on a pulley 2, of a yoke 3 connected to one or more mechanical chain wires of Jacquard type armor.

La poulie 2 peut recevoir l'arcade 3 enroulée sur au moins un tour, car elle présente une surface périphérique d'enroulement continue sur 360°. Elle peut également recevoir l'arcade 3 sur une fraction d'un tour. L'enroulement de l'arcade sur la poulie 2 peut être hélicoïdal ou spiral.Pulley 2 can receive yoke 3 wound on at least one turn because it has a peripheral winding surface continues 360 °. It can also receive the arch 3 on a fraction of a turn. The winding of the arch on the pulley 2 can be helical or spiral.

L'actionneur 1 est un actionneur biphasé. Il comprend deux éléments statoriques 4 et 5, globalement alignés et aptes à coopérer avec un rotor 6 formé d'un tube 7, de préférence en matériau amagnétique tel que, par exemple, en laiton. Le tube 7, qui s'étend selon un axe XX', contient deux aimants permanents 8, 9, disposés en vis-à-vis des deux éléments 4 et 5. Ces éléments 4 et 5 comprennent des bobinages 4a et 5a de fil électriquement conducteur, tel que du fil de cuivre, enroulé autour d'empilages 4b et 5b de tôles magnétiquement conductrices. La forme des empilages 4b et 5b est telle qu'ils forment un logement circulaire 10 pour la réception du tube 7. La taille du logement 10 définit l'entrefer des éléments statoriques 4 et 5 par rapport au rotor 6.The actuator 1 is a two-phase actuator. It comprises two stator elements 4 and 5, generally aligned and able to cooperate with a rotor 6 formed from a tube 7, preferably made of non-magnetic material such as, for example, brass. The tube 7, which extends along an axis XX ′, contains two permanent magnets 8, 9, arranged opposite the two elements 4 and 5. These elements 4 and 5 comprise windings 4 a and 5 a electrically conductive wire, such as copper wire, wound around stacks 4 b and 5 b of magnetically conductive sheets. The shape of the stacks 4 b and 5 b is such that they form a circular housing 10 for receiving the tube 7. The size of the housing 10 defines the air gap of the stator elements 4 and 5 relative to the rotor 6.

Comme il apparaít plus clairement aux figures 2 et 3, le tube 7 reçoit un moyeu globalement cylindrique 20, qui comprend une partie axiale 20a emmanchée à force à l'intérieur du tube 7. Le moyeu 20 est destiné à recevoir de façon amovible un galet 21 formé d'une partie cylindrique d'enroulement 21a et d'une partie d'extrémité ou flasque 21b. Le moyeu 20 est également pourvu d'une partie 20b formant flasque, de sorte que lorsque le galet 21 est en place sur le moyeu 20 comme représenté à la figure 3, ces pièces forment la poulie 2 bordée par les deux flasques 20b et 21b.As it appears more clearly in Figures 2 and 3, the tube 7 receives a generally cylindrical hub 20, which comprises an axial part 20 has force fitted inside the tube 7. The hub 20 is intended to removably receive a roller 21 formed by a cylindrical winding part 21 a and an end part or flange 21 b . The hub 20 is also provided with a part 20 b forming a flange, so that when the roller 21 is in place on the hub 20 as shown in FIG. 3, these parts form the pulley 2 bordered by the two flanges 20 b and B.

Le moyeu 20 est pourvu d'un crochet élastique 20c apte à pénétrer dans une partie centrale évidée 21c du galet 21. Le moyeu 20 porte également une rampe 20d destinée à coopérer avec une rainure 21d ménagée dans la paroi de la partie 21c du galet 21, de telle sorte que celui-ci peut être monté sur le moyeu 20 dans une unique position. La rampe 20d participe également à l'entraínement en rotation du galet 21 en jouant le rôle d'une clavette.The hub 20 is provided with an elastic hook 20 c able to penetrate into a hollowed-out central part 21 c of the roller 21. The hub 20 also carries a ramp 20 d intended to cooperate with a groove 21 d formed in the wall of the part 21 c of the roller 21, so that it can be mounted on the hub 20 in a single position. The ramp 20 d also participates in the rotational drive of the roller 21 by playing the role of a key.

L'arcade 3 est montée sur le galet 21 en formant à son extrémité 3a un noeud 3b. Un logement 21e est prévu dans le galet 21 pour recevoir l'extrémité 3a de l'arcade 3, le logement 21e ayant un débouché 21f de diamètre plus important permettant d'accommoder le noeud 3b. L'arcade 3 traverse la partie centrale creuse 21c du galet 21 et passe dans une fente 20e, ménagée entre le crochet 20c et la partie principale du moyeu 20 afin de conférer au crochet 20c l'élasticité nécessaire à sa fonction. L'arcade 3 est ainsi fermement maintenue en position alors que le galet 21 est facilement mis en place sur le moyeu 20, par une simple pression en direction de l'arbre 7.The arch 3 is mounted on the roller 21 forming at its end 3 has a node 3 b. A housing 21 e is provided in the roller 21 to receive the end 3 a of the arch 3, the housing 21 e having an outlet 21 f of larger diameter making it possible to accommodate the node 3 b . The arch 3 crosses the hollow central part 21 c of the roller 21 and passes through a slot 20 e , formed between the hook 20 c and the main part of the hub 20 in order to give the hook 20 c the elasticity necessary for its function. The arch 3 is thus firmly held in position while the roller 21 is easily placed on the hub 20, by a simple pressure in the direction of the shaft 7.

Ainsi, lors de l'assemblage d'une mécanique d'armure, il est possible de monter l'arcade 3 en fixant simplement, de façon amovible, le galet 21 sur le moyeu 20, ce qui permet d'enrouler plus ou moins l'extrémité 3a de l'arcade 3 autour de la poulie 2.Thus, during the assembly of an armor mechanism, it is possible to mount the yoke 3 by simply fixing, in a removable manner, the roller 21 on the hub 20, which makes it possible to wind more or less the end 3 a of the arch 3 around the pulley 2.

Selon une variante non représentée de l'invention, on peut prévoir de remplacer le noeud 3b par un point de soudure 2 de l'extrémité 3a de l'arcade 3 sur le galet 21. On peut également prévoir de surmouler l'extrémité 3a de l'arcade 3 dans le galet.According to a variant not shown of the invention, provision can be made to replace the node 3 b with a welding point 2 at the end 3 a of the yoke 3 on the roller 21. It is also possible to provide for overmolding the end 3 has arch 3 in the roller.

L'actionneur 1 visible à la figure 1 peut avantageusement être installé en batterie, comme cela apparaít à la figure 4, c'est-à-dire en disposant un grand nombre d'actionneurs côte à côte à l'intérieur d'une structure 40 définissant des compartiments ou cases 40a de réception des actionneurs. Les actionneurs sont insérés dans les compartiments 40a selon une direction F1 et peuvent en être extraits grâce à une patte percée 41 prévue sur la face avant.The actuator 1 visible in Figure 1 can advantageously be installed in a battery, as appears in Figure 4, that is to say by having a large number of actuators side by side inside a structure 40 defining compartments or boxes 40 a for receiving the actuators. The actuators are inserted into the compartments 40 a in a direction F 1 and can be extracted therefrom by means of a pierced tab 41 provided on the front face.

Lorsque les actionneurs 1 sont en place dans les compartiments 40, il est possible de clipper les différents galets 21 sur les moyeux 20 comme cela est représenté par la flèche F2, et ce, sans autre intervention sur les actionneurs 1.When the actuators 1 are in place in the compartments 40, it is possible to clip the various rollers 21 onto the hubs 20 as shown by the arrow F 2 , without any other intervention on the actuators 1.

Lorsqu'on souhaite démonter l'arcade 3, il suffit de tirer sur le galet 21 dans le sens opposé à la flèche F2. Le crochet 20c, qui a une face d'appui inclinée contre le galet 21, est repoussé automatiquement en direction de l'axe XX', de sorte qu'il ne s'oppose pas à l'extraction du galet 21 vers la gauche de la figure 3.When it is desired to dismantle the yoke 3, it suffices to pull the roller 21 in the opposite direction to the arrow F 2 . The hook 20c, which has an inclined bearing face against the roller 21, is automatically pushed back towards the axis XX ', so that it does not oppose the extraction of the roller 21 to the left of Figure 3.

Dans le second mode de réalisation de l'invention représenté à la figure 5, les éléments analogues à ceux du mode de réalisation des figures 1 à 4 portent des références identiques augmentées de 50. Dans ce mode de réalisation, un tube 57 appartenant au rotor d'un actionneur rotatif électrique reçoit, à son extrémité, un moyeu 70 dont une partie axiale 70a est prévue pour être collée à l'intérieur du tube 57. Un flasque 71 est prévu pour être rapporté sur le moyeu 70 de façon à former une poulie d'enroulement 52 de l'extrémité supérieure 53a d'une arcade 53. L'extrémité 53a de l'arcade 53 est reçue dans un logement 71e du flasque 71 et collée dans celui-ci. L'extrémité inférieure 53b de l'arcade 53 est reliée à deux lisses 81 et 81' respectivement équipées d'un oeillet 81a ou 81'a de passage d'un fil de chaíne. Les lisses 81 et 81' traversent un guide-fil 82 situé à proximité de l'actionneur et une planche d'empoutage 83.In the second embodiment of the invention shown in Figure 5, elements similar to those of the embodiment of Figures 1 to 4 bear identical references increased by 50. In this embodiment, a tube 57 belonging to the rotor of an electric rotary actuator receives, at its end, a hub 70 of which an axial part 70 a is intended to be glued inside the tube 57. A flange 71 is provided to be attached to the hub 70 so as to form a winding pulley 52 of the upper end 53 a of an arch 53. The end 53 a of the arch 53 is received in a housing 71 e of the flange 71 and glued therein. The lower end 53 b of the yoke 53 is connected to two smooth 81 and 81 'respectively equipped with an eyelet 81 a or 81' a passage of a warp yarn. The heddles 81 and 81 ′ pass through a wire guide 82 located near the actuator and a grading board 83.

La surface radiale externe 70b du moyeu 70 constitue la surface d'enroulement de la poulie 52 et est pourvue d'une rainure hélicoïdale 70c de guidage de l'arcade 53 en cours d'enroulement, sur une fraction de tour ou sur plusieurs tours, en fonction des besoins. The external radial surface 70 b of the hub 70 constitutes the winding surface of the pulley 52 and is provided with a helical groove 70 c for guiding the yoke 53 during winding, over a fraction of a turn or over several turns, as needed.

Le flasque 71 comprend une partie axiale 71a destinée à pénétrer dans un logement 70d du moyeu 70 pour un assemblage amovible du flasque 71 sur le moyeu 70. On peut prévoir que le logement 70d comprend des nervures ou des encoches de forme complémentaire à celle de nervures ou encoches prévues sur la surface extérieure de la partie 71a, de façon à garantir l'entraínement en rotation du flasque 71 par le moyeu 70. Un dispositif de clavette peut également être envisagé.The flange 71 comprises an axial part 71 a intended to penetrate into a housing 70 d of the hub 70 for a removable assembly of the flange 71 on the hub 70. It can be provided that the housing 70 d comprises ribs or notches of shape complementary to that ribs or recesses provided on the outer surface of the portion 71a, so as to ensure the rotational drive of the flange 71 by the hub 70. A key device may also be considered.

Comme dans le dispositif du premier mode de réalisation, des moyens sont prévus pour l'indexage angulaire, l'entraínement en rotation et le maintien axial de la poulie 52.As in the device of the first embodiment, means are provided for angular indexing, training in rotation and the axial maintenance of the pulley 52.

Dans ce mode de réalisation, les éléments essentiels de la poulie 52, et en particulier la surface d'enroulement 70b, sont constitués par le moyeu 70 alors que la partie solidaire de l'extrémité 53a de l'arcade 53 est réduite au seul flasque 71.In this embodiment, the essential elements of the pulley 52, and in particular the winding surface 70 b , are constituted by the hub 70 while the part secured to the end 53 a of the yoke 53 is reduced to the single flange 71.

A la place des logements 21e et 71e des premier et second mode de réalisation, un téton peut être formé sur le galet 21 ou le flasque 71, l'extrémité 3a ou 53a de l'arcade formant alors une boucle prévue pour être disposée autour de ce téton. D'autres moyens de retenue peuvent également être formés sur le galet 21 ou le flasques 71 pour coopérer avec l'extrémité de l'arcade.In place of the housings 21 e and 71 e of the first and second embodiment, a stud can be formed on the roller 21 or the flange 71, the end 3 a or 53 a of the arch then forming a loop provided for be arranged around this nipple. Other retaining means can also be formed on the roller 21 or the flanges 71 to cooperate with the end of the yoke.

Selon un autre mode de réalisation, non représenté, de l'invention, on pourrait également prévoir que l'actionneur comprend un moyeu fixé par tout moyen approprié sur le rotor d'un actionneur, alors que l'extrémité supérieure de l'arcade ou d'un autre élément funiculaire est simplement nouée sur ce moyeu qui comprend, par exemple, un trou de réception de cette extrémité. Dans ce cas également, l'extrémité supérieure de l'élément funiculaire peut être fixée de façon amovible sur un élément entraíné en rotation par l'actionneur rotatif électrique.According to another embodiment, not shown, of the invention, it could also be provided that the actuator includes a hub attached by any suitable means to the rotor an actuator, while the upper end of the yoke or another funicular is simply tied on it hub which includes, for example, a hole for receiving this end. In this case also, the upper end of the funicular element can be removably attached to a element rotated by the electric rotary actuator.

Dans le troisième mode de réalisation de l'invention représenté à la figure 6, les éléments analogues à ceux du mode de réalisation des figures 1 à 4 portent des références identiques augmentées de 100. Dans ce mode de réalisation, les deux extrémités 103a et 103b d'un câble 103, formant une lisse et pourvu d'un oeillet 103c de passage d'un fil de chaíne 132, sont rendues solidaires d'un moyeu 120 formant une poulie 102 et fixé sur un tube 107 appartenant au rotor d'un actionneur rotatif électrique. Le moyeu 120 comprend une collerette 120a définissant deux zones 120b et 120c d'enroulement des extrémités 103a et 103b du câble 103. Une planche d'empoutage 122 est prévue pour le guidage du câble 103 en dessous du moyeu 120 et comprend deux orifices 122a et 122b de passage du câble 103.In the third embodiment of the invention shown in FIG. 6, the elements similar to those of the embodiment of FIGS. 1 to 4 bear identical references increased by 100. In this embodiment, the two ends 103 a and 103 b of a cable 103, forming a smooth and provided with an eyelet 103 c for passing a chain wire 132, are made integral with a hub 120 forming a pulley 102 and fixed on a tube 107 belonging to the rotor an electric rotary actuator. The hub 120 comprises a flange 120 a defining two zones 120 b and 120 c for winding the ends 103 a and 103 b of the cable 103. A grouting board 122 is provided for guiding the cable 103 below the hub 120 and comprises two orifices 122 a and 122 b for passage of the cable 103.

Le câble 103 passe également autour d'une poulie folle 123 maintenue, par rapport à un cadre fixe 124, par un ressort de rappel 125 exerçant sur la poulie 123 un effort vertical F3 dirigé vers le bas, de telle sorte que la poulie exerce sur le câble 103 un effort de tension.The cable 103 also passes around a mad pulley 123 held, with respect to a fixed frame 124, by a return spring 125 exerting on the pulley 123 a vertical force F 3 directed downwards, so that the pulley exerts on the cable 103 a tension force.

Les extrémités 103a et 103b du câble 103 sont enroulées sur le moyeu 120 dans deux sens différents, de telle sorte que l'enroulement de l'une de ces extrémités correspond au déroulement de l'autre extrémité et vice versa. Ainsi, le mouvement de rotation de moyeu 120 autour de l'axe XX' induit un mouvement oscillant vertical tel que représenté par la flèche F4 de l'oeillet 103c.The ends 103 a and 103 b of the cable 103 are wound on the hub 120 in two different directions, so that the winding of one of these ends corresponds to the unwinding of the other end and vice versa. Thus, the hub rotation movement 120 around the axis XX 'induces a vertical oscillating movement as represented by the arrow F 4 of the eyelet 103 c .

Dans le cas d'un mouvement d'armure particulièrement simple, notamment pour du drap, et selon une variante non représentée de l'invention, on peut prévoir que le câble 103 porte, sur chaque brin, un oeillet de passage d'un fil de chaíne, de part et d'autre de la poulie 123. Ainsi, les mouvements des oeillets sont en opposition de phase.In the case of a particularly armor movement simple, especially for sheets, and according to a variant not shown in the invention, it can be provided that the cable 103 carries, on each strand, an eyelet for the passage of a chain, on either side of the pulley 123. Thus, the movements of the eyelets are in phase opposition.

Dans le quatrième mode de réalisation de l'invention représentée à la figure 7, les éléments analogues à ceux du mode de réalisation de la figure 6 portent des références identiques. Deux câbles 103 et 103' sont solidaires de et entraínés par une poulie 102, identique à celle du troisième mode de réalisation. Le mouvement en opposition de phase des brins correspondant aux extrémités 103a et 103'a des câbles 103 et 103' est utilisé pour la réalisation d'une lisière. Dans ce cas, les câbles portent chacun un oeillet 103c ou 103'c de commande de la position d'un fil de chaíne 132 ou 132' et constituent chacun un élément funiculaire relié au bâti 124 de la machine par un moyen de rappel élastique, tel qu'un ressort 135 ou 135'. In the fourth embodiment of the invention shown in Figure 7, elements similar to those of the embodiment of Figure 6 bear identical references. Two cables 103 and 103 'are integral with and driven by a pulley 102, identical to that of the third embodiment. The strands antiphase motion corresponding to the ends 103 and 103 'are cables 103 and 103' is used for producing a selvedge. In this case, the cables each carry an eyelet 103 c or 103 ′ c for controlling the position of a chain wire 132 or 132 ′ and each constitute a funicular element connected to the frame 124 of the machine by an elastic return means. , such as a spring 135 or 135 '.

Dans le cinquième mode de réalisation de l'invention représenté à la figure 8, les éléments analogues à ceux du mode de réalisation des figures 1 à 4 portent des références identiques augmentées de 200. Dans ce mode de réalisation, les extrémités 203a et 203b d'un ensemble 203, formé d'une arcade 230 et d'une lisse 231 de métier Jacquard, sont fixées à une poulie 202 constituée par un moyeu 220 solidaire d'un tube 207 appartenant au rotor d'un actionneur rotatif électrique.In the fifth embodiment of the invention shown in Figure 8, elements similar to those of the embodiment of Figures 1 to 4 bear identical references increased by 200. In this embodiment, the ends 203 a and 203 b of an assembly 203, formed by an arch 230 and a heddle 231 of the Jacquard loom, are fixed to a pulley 202 constituted by a hub 220 integral with a tube 207 belonging to the rotor of an electric rotary actuator.

Le moyeu 220 est bordé de deux flasques 220a, 220b au niveau desquels sont fixées les extrémités 203a et 203b qui sont enroulées sur une zone centrale 220c du moyeu 220. Au niveau de leur zone de raccordement avec la surface 220c, les brins 203c et 203d de l'ensemble 203 sont séparés par une distance d correspondant sensiblement à l'écartement des orifices 222a et 222b d'une planche d'empoutage 222. Ces orifices guident les brins 203c et 203d au-dessus d'un fil de chaíne 232 traversant un oeillet 231a de la lisse 231.The hub 220 is bordered by two flanges 220 a , 220 b at the level of which the ends 203 a and 203 b are fixed, which are wound on a central zone 220 c of the hub 220. At their connection zone with the surface 220 c , the strands 203 c and 203 d of the assembly 203 are separated by a distance d corresponding substantially to the spacing of the orifices 222 a and 222 b of a grazing board 222. These orifices guide the strands 203 c and 203 d above a chain wire 232 passing through an eyelet 231 a of the stringer 231.

En fonction de l'enroulement des extrémités 203a et 203b sur la poulie 202, c'est-à-dire sur le moyeu 220, l'oeillet 231a peut prendre les deux positions représentées respectivement par les positions en traits pleins et en traits mixtes du fil de chaíne 232.Depending on the winding of the ends 203 a and 203 b on the pulley 202, that is to say on the hub 220, the eyelet 231 a can take the two positions represented respectively by the positions in solid lines and in mixed lines of chain wire 232.

Comme précédemment, une poulie folle 223 est destinée à être entourée par la partie inférieure de l'arcade 230 en étant reliée au bâti de la machine 224 par un ressort 225. Le ressort 225 exerce sur la poulie 223 un effort F5 de tension de l'arcade 230.As before, a mad pulley 223 is intended to be surrounded by the lower part of the yoke 230 while being connected to the frame of the machine 224 by a spring 225. The spring 225 exerts on the pulley 223 a force F 5 of tension of the arch 230.

La rotation du moyeu 220 autour de l'axe XX' du tube 207 induit le déroulement de l'une des extrémités de l'ensemble 203 et l'enroulement correspondant de l'autre extrémité. Ainsi, la distance d est maintenue globalement constante au cours des mouvements de rotation du moyeu 220. En d'autres termes, la surface 220c du moyeu 220 est une zone d'enroulement commune des extrémités 203a et 203b, étant entendu qu'une distance d est maintenue en permanence entre ces extrémités. Ceci permet de prévoir le moyeu 220 environ deux fois plus court que le moyeu 120 de figure 6 et d'éviter que l'arcade 203 ne soit déviée de façon trop importante au niveau des orifices 222a et 222b.The rotation of the hub 220 around the axis XX 'of the tube 207 induces the unwinding of one of the ends of the assembly 203 and the corresponding winding of the other end. Thus, the distance d is kept generally constant during the rotational movements of the hub 220. In other words, the surface 220 c of the hub 220 is a zone of common winding of the ends 203 a and 203 b , it being understood that 'a distance d is permanently maintained between these ends. This makes it possible to provide the hub 220 approximately twice as short as the hub 120 of FIG. 6 and to prevent the yoke 203 from being deflected excessively at the level of the orifices 222 a and 222 b .

Bien entendu, le câble de ce cinquième mode de réalisation pourrait également porter deux oeillets qui serviraient à commander deux fils de chaíne distincts, comme dans le mode de réalisation de la figure 7.Of course, the cable of this fifth embodiment could also wear two eyelets which would be used to order two separate warp threads, as in the realization of figure 7.

Dans les modes de réalisation des figures 6 et 8, l'élément funiculaire 103 ou 203 circule sur une unique poulie de renvoi 123 ou 223, ce qui est particulièrement simple sur le plan structurel et induit une faible inertie. L'élément funiculaire 103 ou 203 commande, par l'oeillet 103c ou 231a qu'il porte, sur un premier brin, la position des fils de chaíne 132 ou 232, alors que son second brin traverse également la nappe de fils de chaíne. Avantageusement, au niveau de cette nappe, l'élément funiculaire peut être réalisé par un fil métallique, de préférence cylindrique, fin et lisse.In the embodiments of FIGS. 6 and 8, the funicular element 103 or 203 runs on a single deflection pulley 123 or 223, which is particularly simple from a structural point of view and induces low inertia. The funicular element 103 or 203 controls, by the eyelet 103 c or 231 a that it carries, on a first strand, the position of the chain wires 132 or 232, while its second strand also crosses the web of son chain. Advantageously, at this level, the funicular element can be produced by a metallic wire, preferably cylindrical, thin and smooth.

Dans les modes de réalisation des figures 6 à 8 et pour guider les extrémités des éléments funiculaires dans leur enroulement et leur déroulement, des gorges hélicoïdales peuvent être prévues sur les zones 120b, 120c et 220c des moyeux 120 et 220. Comme dans les autres modes de réalisation, la fixation des extrémités de l'élément funiculaire sur les moyeux garantit un guidage précis de ces éléments, en particulier lorsqu'il s'agit d'une arcade de métier Jacquard. Le caractère amovible de cette fixation obtenu, par exemple, par des systèmes analogues à ceux des modes de réalisation précédents, confère à l'ensemble une bonne aptitude au démontage. Les poulies 102 et 202 pourraient, en particulier, être réalisées en deux parties équivalentes aux organes 20 et 21 ou 70 et 71.In the embodiments of FIGS. 6 to 8 and to guide the ends of the funicular elements in their winding and unwinding, helical grooves can be provided in the zones 120 b , 120 c and 220 c of the hubs 120 and 220. As in the other embodiments, the fixing of the ends of the funicular element to the hubs guarantees precise guiding of these elements, in particular when it is a Jacquard loom arch. The removable nature of this attachment obtained, for example, by systems similar to those of the previous embodiments, gives the assembly a good dismantling ability. The pulleys 102 and 202 could, in particular, be made in two parts equivalent to the members 20 and 21 or 70 and 71.

Dans les modes de réalisation des figures 6 à 8, les deux extrémités du ou des élément(s) funiculaire(s) ont été représentées comme s'enroulant dans des sens opposés, ce qui permet d'obtenir des mouvements opposés d'oeillets reliés à ces extrémités. Dans le mode de réalisation de la figure 7, il est cependant possible d'enrouler deux ou plus de deux extrémités d'éléments funiculaires dans le même sens sur une poulie, ce qui permet de commander plusieurs oeillets en phase, comme dans le mode de réalisation de la figure 5, sans avoir recours à un raccord du type de celui représenté à l'extrémité inférieure 53b de l'arcade 53.In the embodiments of FIGS. 6 to 8, the two ends of the funicular element (s) have been shown as winding in opposite directions, which makes it possible to obtain opposite movements of connected eyelets at these ends. In the embodiment of FIG. 7, it is however possible to wind two or more of two ends of funicular elements in the same direction on a pulley, which makes it possible to control several eyelets in phase, as in the mode of embodiment of Figure 5, without using a connector of the type shown at the lower end 53 b of the yoke 53.

De plus, il est possible, sans sortir du cadre de la présente invention, d'associer plusieurs poulies juxtaposées destinées à être entraínées par le rotor d'un unique actionneur. Ces poulies peuvent être identiques ou différentes et peuvent commander chacune un ou plusieurs éléments funiculaires.In addition, it is possible, without departing from the scope of the present invention, to combine several juxtaposed pulleys intended to be driven by the rotor of a single actuator. These pulleys can be the same or different and can each order one or more funicular elements.

Dans tous les modes de réalisation décrits, on peut utiliser des courroies plates comme éléments funiculaires, notamment au niveau des poulies. Dans ce cas, on prévoit avantageusement qu'elles s'enroulent en superposition, c'est-à-dire en spirale.In all the embodiments described, it is possible to use flat belts as funicular elements, especially at the pulleys. In this case, we plan advantageously that they roll up in superposition, that is to say spiral.

Dans un métier à tisser, qui comprend généralement un grand nombre d'éléments funiculaires, on réalise l'assemblage des éléments funiculaires sur les poulies de telle sorte que l'orientation des moyens de connection amovible par rapport aux polarités des éléments magnétiques des différents actionneurs, tels que les aimants des rotors ou les éléments statoriques, a une répartition irrégulière. Il est également possible de prévoir une orientation régulièrement décalée selon un pas relativement faible, de l'ordre de 3 à 15°. Dans les deux cas, ceci permet d'éviter une résonnance mécanique ou magnétique du dispositif.In a loom, which generally includes a large number of funicular elements, we assemble funicular elements on the pulleys so that the orientation of the removable connection means with respect to polarities of the magnetic elements of the different actuators, such as rotor magnets or stator elements, a irregular distribution. It is also possible to provide an orientation regularly shifted by one step relatively weak, of the order of 3 to 15 °. In both cases, this avoids mechanical or magnetic resonance of the device.

Claims (15)

Procédé de montage d'un élément funiculaire (3 ; 53 ; 103, 103' ; 203) dans un dispositif de formation de la foule sur un métier à tisser de type Jacquard, caractérisé en ce qu'il consiste à fixer au moins une extrémité (3a ; 53a ; 103a, 103'a ; 103b ; 203a ; 203b) dudit élément funiculaire sur une poulie (2 ; 52 ; 102 ; 202) apte à recevoir ledit élément funiculaire en enroulement sur au moins un tour et entraínée par le rotor (6, 7 ; 57 ; 107 ; 207) d'un actionneur rotatif électrique (1) et à disposer des moyens (20, 21 ; 70, 71 ; 120, 220) de connection amovible entre ledit élément funiculaire et ledit actionneur.Method for mounting a funicular element (3; 53; 103, 103 '; 203) in a crowd formation device on a Jacquard type loom, characterized in that it consists in fixing at least one end (3 a ; 53 a ; 103 a , 103 'a; 103 b ; 203 a ; 203 b ) of said funicular element on a pulley (2; 52; 102; 202) capable of receiving said funicular element in winding on at least one tower and driven by the rotor (6, 7; 57; 107; 207) of an electric rotary actuator (1) and having means (20, 21; 70, 71; 120, 220) for removable connection between said element funicular and said actuator. Procédé selon la revendication 1, caractérisé en ce qu'il consiste à solidariser une extrémité (3a, 53a) dudit élément funiculaire (3 ; 53 ; 103, 103' ; 203) avec un premier organe (21 ; 71) et à monter, de façon amovible, ledit premier organe sur un second organe (20 ; 70) solidaire dudit rotor (6, 7 ; 57 ; 107 ; 207).A method according to claim 1, characterized in that it consists in securing one end (3 a, 53 a) of the said funicular element (3; 53; 103, 103 '; 203) with a first member (21; 71) and removably mounting said first member on a second member (20; 70) integral with said rotor (6, 7; 57; 107; 207). Dispositif de formation de la foule sur un métier à tisser de type Jacquard, ledit dispositif comprenant au moins un actionneur rotatif électrique (1) prévu pour l'entraínement d'au moins un élément funiculaire (3 ; 53 ; 103, 103' ; 203) autour d'un élément d'enroulement, caractérisé en ce qu'au moins une extrémité (3a ; 53a ; 103a, 103'a, 103b ; 203a, 203b) dudit élément funiculaire est fixée sur une poulie (2 ; 52 ; 102 ; 202), apte à recevoir ledit élément funiculaire en enroulement sur au moins un tour et entraínée en rotation par ledit actionneur, et en ce que des moyens (20, 21 ; 70, 71 ; 120, 220) de connection amovible sont disposés entre ledit élément funiculaire et ledit actionneur.Device for training the crowd on a Jacquard type loom, said device comprising at least one electric rotary actuator (1) intended for driving at least one funicular element (3; 53; 103, 103 '; 203 ) around a winding element, characterized in that at least one end (3 a ; 53 a ; 103 a , 103 ' a , 103 b ; 203 a , 203 b ) of said funicular element is fixed on a pulley (2; 52; 102; 202), capable of receiving said funicular element in winding over at least one turn and driven in rotation by said actuator, and in that means (20, 21; 70, 71; 120, 220) removable connection are arranged between said funicular element and said actuator. Dispositif selon la revendication 3, caractérisé en ce que lesdits moyens de connection amovible comprennent un premier organe (21 ; 71) pourvu d'au moins un moyen de retenue (21e, 71e) de ladite extrémité (3a, 53a) dudit élément funiculaire (3 ; 53) et un second organe (20 ; 70) solidaire d'un rotor (7 ; 57) dudit actionneur (1), lesdits premier et second organes étant prévus pour être assemblés de façon amovible.Device according to claim 3, characterized in that said removable connection means comprise a first member (21; 71) provided with at least one retaining means (21 e , 71 e ) of said end (3 a , 53 a ) of said funicular element (3; 53) and a second member (20; 70) integral with a rotor (7; 57) of said actuator (1), said first and second members being designed to be assembled in a removable manner. Dispositif selon la revendication 4, caractérisé en ce que ledit second organe (20) est pourvu d'un élément (20c) élastique d'accrochage dudit premier organe (21).Device according to claim 4, characterized in that said second member (20) is provided with an elastic element (20 c ) for hooking said first member (21). Dispositif selon l'une des revendications 4 ou 5, caractérisé en ce que lesdits premier et second organes (20. 21) sont pourvus de moyens (20d, 21d) de détrompage permettant leur assemblage dans une position relative adaptée.Device according to one of claims 4 or 5, characterized in that said first and second members (20. 21) are provided with polarizing means (20 d , 21 d ) allowing their assembly in a suitable relative position. Dispositif selon l'une des revendications 3 à 6, caractérisé en ce qu'il comprend des moyens de fixation d'au moins deux extrémités (103a, 103b ; 103a, 103'a ; 203a, 203b) d'élément(s) funiculaire(s) (103 ; 103, 103' ; 203).Device according to one of claims 3 to 6, characterized in that it comprises means for fixing at least two ends (103 a , 103 b ; 103 a , 103 'a; 203 a , 203 b ) d funicular element (s) (103; 103, 103 '; 203). Dispositif selon la revendication 7, caractérisé en ce que lesdites extrémités (103a, 103b ; 203a, 203b) appartiennent à un unique élément funiculaire (103 ; 203) disposé autour d'une poulie de renvoi (123 ; 223) chargée élastiquement (F3 ; F5) de façon à exercer un effort de tension sur ledit élément funiculaire (103 ; 203), lesdites deux extrémités étant prévues pour être enroulées en sens opposés sur ladite poulie (102 ; 202).Device according to claim 7, characterized in that said ends (103 a , 103 b ; 203 a , 203 b ) belong to a single funicular element (103; 203) disposed around a loaded pulley (123; 223) elastically (F 3 ; F 5 ) so as to exert a tensile force on said funicular element (103; 203), said two ends being intended to be wound in opposite directions on said pulley (102; 202). Dispositif selon la revendication 7, caractérisé en ce que lesdites deux extrémités (103a, 103'a) appartiennent à des éléments funiculaires distincts (103, 103') reliés à des moyens (135, 135') de mise en tension individuels.Device according to claim 7, characterized in that said two ends (103 a , 103 ' a ) belong to separate funicular elements (103, 103') connected to means (135, 135 ') for individual tensioning. Dispositif selon l'une des revendications 7 à 9, caractérisé en ce que lesdites deux extrémités (203a, 203b) dudit élément funiculaire (203) ont une zone d'enroulement commune (220c) sur ledit ensemble d'enroulement (220).Device according to one of claims 7 to 9, characterized in that said two ends (203 a , 203 b ) of said funicular element (203) have a common winding zone (220 c ) on said winding assembly (220 ). Dispositif selon l'une des revendications 7 à 10, caractérisé en ce que ledit élément funiculaire (103, 203) commande, par un premier brin, la position de fils de chaíne (132 ; 232) alors que son second brin traverse une nappe de fils de chaíne entre ladite poulie d'enroulement (102 ; 202) et ladite poulie de renvoi (123 ; 223).Device according to one of claims 7 to 10, characterized in that said funicular element (103, 203) controls, by a first strand, the position of chain wires (132; 232) while its second strand crosses a sheet of chain son between said winding pulley (102; 202) and said return pulley (123; 223). Dispositif selon l'une des revendications 7 à 10, caractérisé en ce que lesdites extrémités (103a, 103b ; 103a, 103'a ; 203a, 203b) d'élément(s) funiculaire(s) ( 103 ; 103, 103', 203) commandent chacune la position d'un oeillet (103c, 103'c) de passage d'un fil de chaíne (132, 132').Device according to one of claims 7 to 10, characterized in that said ends (103 a , 103 b ; 103 a , 103 'a; 203 a , 203 b ) of funicular element (s) (103; 103, 103 ', 203) each control the position of an eyelet (103 c , 103' c ) for the passage of a chain wire (132, 132 '). Dispositif selon l'une des revendications 3 à 12, caractérisé en ce que ladite poulie (52) est pourvue d'une rainure hélicoïdale (70c) de guidage dudit élément funiculaire (53) en cours d'enroulement.Device according to one of claims 3 to 12, characterized in that said pulley (52) is provided with a helical groove (70 c ) for guiding said funicular element (53) during winding. Métier à tisser de type Jacquard, caractérisé en ce qu'il comprend un dispositif de formation de la foule selon l'une des revendications 3 à 13.Jacquard type loom, characterized in that it includes a crowd training device according to one of claims 3 to 13. Métier à tisser selon la revendication 14, caractérisé en ce que l'orientation desdits moyens (20, 21 ; 70, 71 ; 120 ; 220) de connection amovible par rapport aux polarités des éléments magnétiques (4, 5, 6) des actionneurs (1) a une répartition irrégulière ou régulièrement décalée.Weaving machine according to claim 14, characterized in that the orientation of said means (20, 21; 70, 71; 120; 220) of removable connection with respect to the polarities of the magnetic elements (4, 5, 6) of the actuators (1) have a irregular or regularly shifted distribution.
EP98420238A 1997-12-24 1998-12-17 Harness cord fixing method, shedding mechanism and weaving loom Expired - Lifetime EP0933456B1 (en)

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FR9716739 1997-12-24
FR9716739A FR2772796B1 (en) 1997-12-24 1997-12-24 METHOD FOR MOUNTING A FUNICULAR ELEMENT, A CROWD FORMING DEVICE AND A WEAVING MATERIAL

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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
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FR2772796A1 (en) 1999-06-25
TR199802688A1 (en) 1999-07-21
US6092564A (en) 2000-07-25
PT933456E (en) 2002-01-30
EP0933456B1 (en) 2001-07-25
KR100571877B1 (en) 2006-11-30
BR9805699A (en) 2000-01-11
KR19990063264A (en) 1999-07-26
ES2159171T3 (en) 2001-09-16
JPH11241246A (en) 1999-09-07
CN1083906C (en) 2002-05-01
CN1221821A (en) 1999-07-07
FR2772796B1 (en) 2000-01-28
DE69801208T2 (en) 2002-05-02
DE69801208D1 (en) 2001-08-30
TW451005B (en) 2001-08-21
JP4230033B2 (en) 2009-02-25

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