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EP1598460B1 - Device for driving knitting needles and loom with such a device - Google Patents

Device for driving knitting needles and loom with such a device Download PDF

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Publication number
EP1598460B1
EP1598460B1 EP05356085.0A EP05356085A EP1598460B1 EP 1598460 B1 EP1598460 B1 EP 1598460B1 EP 05356085 A EP05356085 A EP 05356085A EP 1598460 B1 EP1598460 B1 EP 1598460B1
Authority
EP
European Patent Office
Prior art keywords
shaft
meshing
needle
movement
needles
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.)
Not-in-force
Application number
EP05356085.0A
Other languages
German (de)
French (fr)
Other versions
EP1598460A1 (en
Inventor
Guillaume Boutte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Staeubli Lyon SA
Original Assignee
Staeubli Lyon SA
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Filing date
Publication date
Application filed by Staeubli Lyon SA filed Critical Staeubli Lyon SA
Publication of EP1598460A1 publication Critical patent/EP1598460A1/en
Application granted granted Critical
Publication of EP1598460B1 publication Critical patent/EP1598460B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/02—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein loops of continuous weft thread are inserted, i.e. double picks
    • D03D47/06—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein loops of continuous weft thread are inserted, i.e. double picks by a pivoted needle having a permanently-threaded eye
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D35/00—Smallware looms, i.e. looms for weaving ribbons or other narrow fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D41/00—Looms not otherwise provided for, e.g. for weaving chenille yarn; Details peculiar to these looms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/40—Forming selvedges
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/40—Forming selvedges
    • D03D47/42—Forming selvedges by knitting or interlacing loops of weft

Definitions

  • the invention relates to a mesh needle drive device for a sickle loom.
  • the invention also relates to a loom equipped with such a device.
  • a mesh needle drive device for a sickle loom according to the preamble of claim 1 is known from the document US-A-3,752,195 .
  • mesh needles In the field of looms with sickles, it is known to use, for the formation of selvedges fabrics or ribbons during manufacture, so-called mesh needles that operate by movement forward and back in synchronism with the movement of the sickles, in order to crochet the weft thread brought by a sickle and mesh it with the previous weft.
  • These mesh needles are generally provided with a valve and controlled by cams and rods that must be adjusted accurately to set the amplitude and extreme positions of the stroke of these needles.
  • These drive and control devices are complex and relatively unreliable. They are, moreover, expensive and their adjustment is long and delicate, which does not allow to obtain a satisfactory accuracy and repeatability of the movement of the mesh needles.
  • the invention intends to remedy more particularly by proposing a new training device for mesh needles which is easily adjustable and which does not have a tendency to deteriorate over time, whereas its construction is simpler than that of known devices, which gives it a better reliability.
  • the invention relates to a mesh needle drive device for a sickle loom which comprises an electric rotary actuator whose output shaft is kinematically linked, by means of transforming a rotary movement. in a translational movement, with several meshing needles.
  • the settings of the movement of the mesh needles can be performed extremely quickly and accurately by adjusting the control parameters of the electric rotary actuator.
  • the fact of controlling several needles through the same actuator limits the number of components of the drive device, which reduces its cost and improves its reliability.
  • the device of the invention can operate at high speed, in particular higher than the systems with rods and cams of the state of the art, while its size is reduced.
  • the linear movement of the mesh needles parallel to the edge of the fabric or ribbon during weaving makes it possible to make stitches smaller and to reduce the necessary compensation.
  • the invention also relates to a sickle loom equipped with a drive device as previously described.
  • a sickle loom equipped with a drive device as previously described.
  • Such a craft is easier to manufacture, adjust and maintain than those of the state of the art and can operate at a higher speed.
  • the loom M partially represented in the figure 1 allows to weave several ribbons in parallel by crossing warp son 1 and weft son 2.
  • the weft son are more or less spaced apart from each other forming a crowd F, this crowd being, for example, obtained by means of a Jacquard type mechanism, known per se and not shown.
  • the weft yarn 2 is supplied from a not shown reel and introduced into the shed F by means of a sickle 4 animated with an alternating rotation movement F 1 about an axis XX 'substantially vertical.
  • the weft yarn 2 passes through an eyelet 41 formed in the vicinity of the free end 42 of the sickle 4 whose drive mechanism about the axis XX 'is not shown for clarity of the drawing.
  • a mesh needle 5 is associated with each sickle 4, this needle being animated with a movement of advance and recoil, represented by the double arrow F 2 , which is essentially parallel to the direction of advance of the warp threads represented by the arrow F 3 .
  • the mesh needle can be of any known type and, for example, equipped with a valve 5a.
  • an electric rotary actuator 6 in this case a brushless DC electric motor or "brushless”
  • the output shaft 7 is grooved and centered on a geometric axis YY 'generally perpendicular to the XX 'axis and F 3 direction of the warp son.
  • pinions 8 On the shaft 7 are mounted pinions 8 in number equal to the number of needles 5 to drive, each of these pinions being intended to be engaged with a rack 9 on which is reported a needle 5.
  • each rack is provided with a housing 91 for receiving a rear end 51 of a needle 5, as well as a screw 92 for locking this end 51 in this housing 91.
  • each needle 5 is secured in a removable manner with a rack 9, which allows for a quick and easy exchange of one or more needles 5 during maintenance operations of the trade M.
  • each pinion 8 is provided with a central grooved opening 81 whose geometry is substantially complementary to the splines 71 of the shaft 7, so as to allow the pinion 8 to be secured in rotation with the shaft 7 and a reduced clearance clearance of the pinion 8 along this shaft, parallel to the axis YY ', as represented by the double arrow F 4 .
  • Each pinion 8 also includes an external toothing 83 adapted to cooperate with a longitudinal toothing 93 of the associated rack 9.
  • each of the mesh needles 5 is driven in its reciprocating movement F 2 .
  • the elements 8 and 9 constitute means for transforming the rotary movement F 5 of the shaft 7 into a translational movement F 2 of the different needles 5.
  • the needles 5 and the associated racks 9 are guided in their translational movement F 2 by housings 10 in which the racks 9 are arranged and which are formed of two half-shells 10A and 10B whose internal surfaces constitute parallel guide rails to the double arrow F 2 .
  • These half-shells 10a and 10b for guiding a rack 9 each extend by a lug 11a or 11b, these lugs together forming a bearing for receiving the pinion 8 associated with this rack. This contributes to the proper relative positioning of the rack / pinion assemblies.
  • a single motor 6 can control several needles 5, for example all the needles of the trade M. Alternatively, and depending on the number of weaving ribbons, two or more motors can be used.
  • the position of each of the pinions 8 along the shaft 7 is easily adjustable, which makes it possible to adjust the position of the different needles. 5 along this shaft, in particular to take into account the number of woven ribbons R or their respective widths.
  • the invention has been shown with pinions 8 whose opening 81 is substantially complementary to the grooves 71 over the entire periphery of the shaft 7. It can be provided that the section of the shaft and the profile of this opening are complementary that on an angular sector, or several, which nevertheless allows to effectively drive the gears.
  • the output shaft 107 of a brushless motor 106 extends perpendicularly to the feed direction F 3 of the warp threads 101 d a loom M whose sickles 104 have an alternating rotational movement F 1 about an axis X-X '.
  • Each mesh needle 105 is stuck on a bar 111 which is connected to the shaft 107 by means of a cable 112 which is stowed on the shaft 107 by means of a wedging member such as a wedge 113 immobilized on the shaft 107 by a screw not shown.
  • the cable 112 surrounds the shaft 107 over at least one turn and its two ends 112A and 112B are respectively secured to the two ends 111A and 111B of the corresponding bar 111, so that the alternating rotation movement F 5 of the shaft 107 is transmitted in the form of an alternating translation movement F 2 to the corresponding needle 105.
  • the power supply parameters of the motor 106 make it possible to control the travel of the hands 105.
  • the elements 105, 111 and 112 are movable parallel to the longitudinal axis YY 'of the shaft 107.
  • a brushless motor 206 drives, in an alternating rotational movement F 5 , an output shaft 207 on which rods 215 are keyed and slidably mounted along the longitudinal axis YY 'of the shaft 207. These rods extend radially relative to the longitudinal axis YY' and are each associated by a rod 217 to a bar 211 on which is mounted a mesh needle 205.
  • each connecting rod 215 could be coupled by a rod 217 directly to a needle 205.
  • the power supply parameters of the motor 206 make it possible to adjust the reciprocating stroke F 2 of the hands 205 whose position parallel to the axis YY 'is adjustable.
  • a mesh finger may, where appropriate, be associated with the sickle and the weave mesh needle of each of the R ribbons.
  • the output shaft of an electric rotary actuator is a shaft driven by this actuator, whether it is a shaft directly connected to the rotor of the actuator or of a solidarized shaft. to a tree itself connected to such a rotor.
  • Various types of electric rotary actuators can be used in the context of the present invention and, in particular, stepper-type motors or any other actuator allowing rotational movement back and forth and whose movement parameters, such as the speed, the instantaneous position and the amplitude, are adjustable.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Knitting Machines (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

L'invention a trait à un dispositif d'entraînement d'aiguilles de maillage pour métier à tisser à faucilles. L'invention a également trait à un métier à tisser équipé d'un tel dispositif.The invention relates to a mesh needle drive device for a sickle loom. The invention also relates to a loom equipped with such a device.

Un dispositif d'entraînement d'aiguilles de maillage pour métier a tisser à faucilles selon le préambule de la revendication 1 est connu du document US-A-3 752 195 .A mesh needle drive device for a sickle loom according to the preamble of claim 1 is known from the document US-A-3,752,195 .

Dans le domaine des métiers à tisser à faucilles, il est connu d'utiliser, pour la formation des lisières des tissus ou rubans en cours de fabrication, des aiguilles dites de maillage qui opèrent par mouvement d'avance et de recul en synchronisme avec le mouvement des faucilles, ceci afin de crocheter le fil de trame amené par une faucille et le mailler avec la trame précédente. Ces aiguilles de maillage sont généralement pourvues d'un clapet et commandées par des dispositifs à cames et bielles qui doivent être réglés de façon précise afin de fixer l'amplitude et les positions extrêmes de la course de ces aiguilles. Ces dispositifs d'entraînement et de commande sont complexes et relativement peu fiables. Ils sont, en outre, coûteux et leur réglage est long et délicat, ce qui ne permet pas d'obtenir une précision et une répétitivité satisfaisantes du mouvement des aiguilles de maillage.In the field of looms with sickles, it is known to use, for the formation of selvedges fabrics or ribbons during manufacture, so-called mesh needles that operate by movement forward and back in synchronism with the movement of the sickles, in order to crochet the weft thread brought by a sickle and mesh it with the previous weft. These mesh needles are generally provided with a valve and controlled by cams and rods that must be adjusted accurately to set the amplitude and extreme positions of the stroke of these needles. These drive and control devices are complex and relatively unreliable. They are, moreover, expensive and their adjustment is long and delicate, which does not allow to obtain a satisfactory accuracy and repeatability of the movement of the mesh needles.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un nouveau dispositif d'entraînement pour des aiguilles de maillage qui est aisément réglable et qui n'a pas tendance à se dérégler au cours du temps, alors que sa construction est plus simple que celle des dispositifs connus, ce qui lui confère une meilleure fiabilité.It is these drawbacks that the invention intends to remedy more particularly by proposing a new training device for mesh needles which is easily adjustable and which does not have a tendency to deteriorate over time, whereas its construction is simpler than that of known devices, which gives it a better reliability.

Dans cet esprit, l'invention concerne un dispositif d'entraînement d'aiguilles de maillage pour métier à tisser à faucilles qui comprend un actionneur rotatif électrique dont l'arbre de sortie est cinématiquement lié, par des moyens de transformation d'un mouvement rotatif en un mouvement translatif, à plusieurs aiguilles de maillages.In this spirit, the invention relates to a mesh needle drive device for a sickle loom which comprises an electric rotary actuator whose output shaft is kinematically linked, by means of transforming a rotary movement. in a translational movement, with several meshing needles.

Grâce à l'invention, les réglages du mouvement des aiguilles de maillage peuvent être effectués de façon extrêmement rapide et précise en jouant sur les paramètres de commande de l'actionneur rotatif électrique. En outre, le fait de commander plusieurs aiguilles grâce à un même actionneur permet de limiter le nombre de composants du dispositif d'entraînement, ce qui diminue son coût et améliore sa fiabilité. Le dispositif de l'invention peut fonctionner à vitesse élevée, notamment plus élevée que les systèmes à bielles et cames de l'état de la technique, alors que son encombrement est réduit. Le mouvement linéaire des aiguilles de maillage parallèlement à la lisière du tissu ou du ruban en cours de tissage permet de faire des mailles moins hautes et de réduire la compensation nécessaire.Thanks to the invention, the settings of the movement of the mesh needles can be performed extremely quickly and accurately by adjusting the control parameters of the electric rotary actuator. In addition, the fact of controlling several needles through the same actuator limits the number of components of the drive device, which reduces its cost and improves its reliability. The device of the invention can operate at high speed, in particular higher than the systems with rods and cams of the state of the art, while its size is reduced. The linear movement of the mesh needles parallel to the edge of the fabric or ribbon during weaving makes it possible to make stitches smaller and to reduce the necessary compensation.

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

  • Les moyens de transformation de mouvement sont répartis selon la longueur ou la direction longitudinale de l'arbre précité et permettent d'entraîner chacun une aiguille de maillage. Dans ce cas, la position de ces moyens de transformation de mouvement le long de cet arbre est avantageusement réglable, ce qui permet un déplacement aisé des aiguilles de maillage dans le sens de la trame, donc un réglage de la largeur du tissu ou du ruban tissé.
  • Selon un premier mode de réalisation, le dispositif comprend au moins un pignon entraîné en rotation par l'arbre précité et en prise avec une crémaillère solidaire d'une aiguille de maillage. Ce pignon est avantageusement monté coulissant à jeu réduit le long de l'arbre précité. Cet arbre peut avoir une section extérieure non circulaire, alors que le pignon est pourvu d'une ouverture de passage de l'arbre qui a un profil au moins en partie sensiblement complémentaire de sa section. On peut, par exemple, prévoir que l'arbre est cannelé, alors que le pignon a une ouverture centrale également cannelée.
  • Selon un second mode de réalisation de l'invention, au moins un élément flexible est arrimé et partiellement enroulé autour de l'arbre, cet élément flexible étant solidarisé à une aiguille de maillage ou à un organe d'entraînement en translation d'une telle aiguille.
  • Selon un troisième mode de réalisation de l'invention, l'arbre précité est équipé d'au moins un élément faisant saillie radialement, notamment de type bielle ou came, qui s'étend vers l'extérieur par rapport à l'arbre précité et qui est accouplé à l'une des aiguilles de maillage ou à un organe d'entraînement en translation d'une telle aiguille.
  • Quel que soit le mode de réalisation, l'aiguille de maillage est avantageusement solidarisée de façon amovible sur la crémaillère ou sur son organe d'entraînement.
According to advantageous but non-mandatory aspects of the invention, a mesh needle driving device may incorporate one or more of the following features taken in any technically permissible combination:
  • The movement transformation means are distributed along the length or the longitudinal direction of the aforementioned shaft and allow each to drive a mesh needle. In this case, the position of these movement transformation means along this shaft is advantageously adjustable, which allows an easy movement of the mesh needles in the direction of the weft, so an adjustment of the width of the fabric or ribbon woven.
  • According to a first embodiment, the device comprises at least one pinion rotated by the aforementioned shaft and engaged with a rack integral with a mesh needle. This pinion is advantageously slidably mounted with reduced clearance along the aforementioned shaft. This tree can have a section outer non-circular, while the pinion is provided with a passage opening of the shaft which has a profile at least partly substantially complementary to its section. One can, for example, provide that the shaft is fluted, while the pinion has a central opening also fluted.
  • According to a second embodiment of the invention, at least one flexible element is stowed and partially wound around the shaft, this flexible element being secured to a mesh needle or to a drive member in translation of such a needle.
  • According to a third embodiment of the invention, the aforementioned shaft is equipped with at least one radially projecting element, in particular of the connecting rod or cam type, which extends outwards with respect to the aforementioned shaft and which is coupled to one of the mesh needles or to a drive member in translation of such a needle.
  • Whatever the embodiment, the mesh needle is preferably releasably secured to the rack or on its drive member.

L'invention concerne également un métier à tisser à faucilles équipé d'un dispositif d'entraînement tel que précédemment décrit. Un tel métier est plus aisé à fabriquer, à régler et à entretenir que ceux de l'état de la technique et peut fonctionner à vitesse plus élevée.The invention also relates to a sickle loom equipped with a drive device as previously described. Such a craft is easier to manufacture, adjust and maintain than those of the state of the art and can operate at a higher speed.

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

  • la figure 1 est une représentation schématique en perspective d'une partie d'un métier à tisser conforme à l'invention incorporant un dispositif d'entraînement d'aiguilles de maillage conforme à l'invention ;
  • la figure 2 est une vue en perspective éclatée d'une partie du dispositif de la figure 1 ;
  • la figure 3 est une vue en perspective d'une partie d'un dispositif conforme à un second mode de réalisation de l'invention ;
  • la figure 3A est une vue partielle à plus grande échelle dans le sens de la flèche IIIA à la figure 3 et
  • la figure 4 est une vue analogue à la figure 3 pour un dispositif conforme à un troisième 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 three embodiments of a training device according to its principle, given solely as a example and with reference to the accompanying drawings in which:
  • the figure 1 is a schematic representation in perspective of a part of a loom according to the invention incorporating a mesh needle drive device according to the invention;
  • the figure 2 is an exploded perspective view of a part of the device of the figure 1 ;
  • the figure 3 is a perspective view of a portion of a device according to a second embodiment of the invention;
  • the figure 3A is a partial view on a larger scale in the direction of arrow IIIA to the figure 3 and
  • the figure 4 is a view similar to the figure 3 for a device according to a third embodiment of the invention.

Le métier à tisser M représenté partiellement à la figure 1 permet de tisser en parallèle plusieurs rubans R en croisant des fils de chaîne 1 et des fils de trame 2. Pour chaque ruban R, les fils de trame sont plus ou moins écartés les uns des autres en formant une foule F, cette foule étant, par exemple, obtenue au moyen d'un mécanisme de type Jacquard, connu en soi et non représenté.The loom M partially represented in the figure 1 allows to weave several ribbons in parallel by crossing warp son 1 and weft son 2. For each ribbon R, the weft son are more or less spaced apart from each other forming a crowd F, this crowd being, for example, obtained by means of a Jacquard type mechanism, known per se and not shown.

Pour chaque ruban, le fil de trame 2 est fourni à partir d'un dévidoir non représenté et introduit dans la foule F au moyen d'une faucille 4 animée d'un mouvement de rotation alternée F1 autour d'un axe X-X' sensiblement vertical. Le fil de trame 2 passe dans un oeillet 41 ménagé au voisinage de l'extrémité libre 42 de la faucille 4 dont le mécanisme d'entraînement autour de l'axe X-X' n'est pas représenté pour la clarté du dessin.For each ribbon, the weft yarn 2 is supplied from a not shown reel and introduced into the shed F by means of a sickle 4 animated with an alternating rotation movement F 1 about an axis XX 'substantially vertical. The weft yarn 2 passes through an eyelet 41 formed in the vicinity of the free end 42 of the sickle 4 whose drive mechanism about the axis XX 'is not shown for clarity of the drawing.

Pour retenir le fil de trame au niveau de la lisière La plus proche de l'observateur à la figure 1, une aiguille de maillage 5 est associée à chaque faucille 4, cette aiguille étant animée d'un mouvement d'avance et de recul, représenté par la double flèche F2, qui est essentiellement parallèle à la direction d'avance des fils de chaîne représentée par la flèche F3.To retain the weft at the edge of the edge closest to the observer at the figure 1 a mesh needle 5 is associated with each sickle 4, this needle being animated with a movement of advance and recoil, represented by the double arrow F 2 , which is essentially parallel to the direction of advance of the warp threads represented by the arrow F 3 .

L'aiguille de maillage peut être de tout type connu et, par exemple, équipée d'un clapet 5a.The mesh needle can be of any known type and, for example, equipped with a valve 5a.

Pour entraîner les trois aiguilles de maillages 5 représentées à la figure 1, il est prévu un actionneur rotatif électrique 6, dans le cas d'espèce un moteur électrique à courant continu sans balai ou « brushless », dont l'arbre de sortie 7 est cannelé et centré sur un axe géométrique Y-Y' globalement perpendiculaire à l'axe X-X' et à la direction F3 d'avance des fils de chaîne. Sur l'arbre 7 sont montés des pignons 8 en nombre égal au nombre d'aiguilles 5 à entraîner, chacun de ces pignons étant destiné à être en prise avec une crémaillère 9 sur laquelle est rapportée une aiguille 5.To train the three meshes 5 represented at the figure 1 , there is provided an electric rotary actuator 6, in this case a brushless DC electric motor or "brushless", the output shaft 7 is grooved and centered on a geometric axis YY 'generally perpendicular to the XX 'axis and F 3 direction of the warp son. On the shaft 7 are mounted pinions 8 in number equal to the number of needles 5 to drive, each of these pinions being intended to be engaged with a rack 9 on which is reported a needle 5.

En pratique, chaque crémaillère est pourvue d'un logement 91 de réception d'une extrémité arrière 51 d'une aiguille 5, ainsi que d'une vis 92 de blocage de cette extrémité 51 dans ce logement 91. Ainsi, chaque aiguille 5 est solidarisée de façon amovible avec une crémaillère 9, ce qui permet de procéder à un échange rapide et aisé d'une ou plusieurs aiguilles 5 lors des opérations de maintenance du métier M.In practice, each rack is provided with a housing 91 for receiving a rear end 51 of a needle 5, as well as a screw 92 for locking this end 51 in this housing 91. Thus, each needle 5 is secured in a removable manner with a rack 9, which allows for a quick and easy exchange of one or more needles 5 during maintenance operations of the trade M.

Comme il ressort plus particulièrement de la figure 2, chaque pignon 8 est pourvu d'une ouverture centrale cannelée 81 dont la géométrie est sensiblement complémentaire des cannelures 71 de l'arbre 7, de façon à permettre une solidarisation en rotation du pignon 8 avec l'arbre 7 et un coulissement à jeu réduit du pignon 8 le long de cet arbre, parallèlement à l'axe Y-Y', comme représenté par la double flèche F4.As is clear from the figure 2 each pinion 8 is provided with a central grooved opening 81 whose geometry is substantially complementary to the splines 71 of the shaft 7, so as to allow the pinion 8 to be secured in rotation with the shaft 7 and a reduced clearance clearance of the pinion 8 along this shaft, parallel to the axis YY ', as represented by the double arrow F 4 .

Chaque pignon 8 comprend également une denture externe 83 apte à coopérer avec une denture longitudinale 93 de la crémaillère 9 associée.Each pinion 8 also includes an external toothing 83 adapted to cooperate with a longitudinal toothing 93 of the associated rack 9.

En fonction de la rotation de l'arbre 7 représentée par la double flèche F5 à la figure 1, chacune des aiguilles de maillage 5 est entraînée dans son mouvement de va-et-vient F2.According to the rotation of the shaft 7 represented by the double arrow F 5 to the figure 1 each of the mesh needles 5 is driven in its reciprocating movement F 2 .

Ainsi, les éléments 8 et 9 constituent des moyens de transformation du mouvement rotatif F5 de l'arbre 7 en un mouvement translatif F2 des différentes aiguilles 5.Thus, the elements 8 and 9 constitute means for transforming the rotary movement F 5 of the shaft 7 into a translational movement F 2 of the different needles 5.

Les aiguilles 5 et les crémaillères 9 associées sont guidées dans leur mouvement de translation F2 par des boîtiers 10 dans lesquels sont disposées les crémaillères 9 et qui sont formés de deux demi-coques 10A et 10B dont les surfaces internes constituent des rails de guidage parallèles à la double flèche F2. Ces demi-coques 10a et 10b de guidage d'une crémaillère 9 se prolongent chacune par une patte 11a ou 11b, ces pattes formant ensemble un palier de réception du pignon 8 associé à cette crémaillère. Ceci contribue au bon positionnement relatif des ensembles pignon/crémaillère.The needles 5 and the associated racks 9 are guided in their translational movement F 2 by housings 10 in which the racks 9 are arranged and which are formed of two half-shells 10A and 10B whose internal surfaces constitute parallel guide rails to the double arrow F 2 . These half-shells 10a and 10b for guiding a rack 9 each extend by a lug 11a or 11b, these lugs together forming a bearing for receiving the pinion 8 associated with this rack. This contributes to the proper relative positioning of the rack / pinion assemblies.

On comprend que l'amplitude et la vitesse de déplacement des différentes aiguilles 5 sont aisément réglables par un ajustement approprié des paramètres d'alimentation du moteur 6.It is understood that the amplitude and the speed of movement of the different needles 5 are easily adjustable by appropriate adjustment of the engine power parameters 6.

Un unique moteur 6 permet de commander plusieurs aiguilles 5, par exemple toutes les aiguilles du métier M. En variante, et en fonction du nombre de rubans à tisser, deux ou plus de deux moteurs peuvent être utilisés.A single motor 6 can control several needles 5, for example all the needles of the trade M. Alternatively, and depending on the number of weaving ribbons, two or more motors can be used.

Compte tenu du mode de solidarisation en rotation des pignons 8 et de l'arbre 7, la position de chacun des pignons 8 le long de l'arbre 7 est aisément ajustable, ce qui permet de régler la position des différentes aiguilles 5 le long de cet arbre, notamment pour tenir compte du nombre de rubans R tissés ou de leurs largeurs respectives.Given the way in which the pinions 8 and the shaft 7 are connected in rotation, the position of each of the pinions 8 along the shaft 7 is easily adjustable, which makes it possible to adjust the position of the different needles. 5 along this shaft, in particular to take into account the number of woven ribbons R or their respective widths.

L'invention a été représentée avec des pignons 8 dont l'ouverture 81 est sensiblement complémentaire des cannelures 71 sur toute la périphérie de l'arbre 7. On peut prévoir que la section de l'arbre et le profil de cette ouverture ne soient complémentaires que sur un secteur angulaire, voire plusieurs, ce qui permet néanmoins d'entraîner efficacement les pignons.The invention has been shown with pinions 8 whose opening 81 is substantially complementary to the grooves 71 over the entire periphery of the shaft 7. It can be provided that the section of the shaft and the profile of this opening are complementary that on an angular sector, or several, which nevertheless allows to effectively drive the gears.

Dans le second mode de réalisation de l'invention représenté à la figure 3, les éléments analogues à ceux du premier mode de réalisation portent des références identiques augmentées de 100. L'arbre de sortie 107 d'un moteur sans balai 106 s'étend perpendiculairement à la direction d'avance F3 des fils de chaîne 101 d'un métier à tisser M dont les faucilles 104 ont un mouvement de rotation alterné F1 autour d'un axe X-X'. Chaque aiguille de maillage 105 est coincée sur une barrette 111 qui est reliée à l'arbre 107 au moyen d'un câble 112 qui est arrimé sur l'arbre 107 au moyen d'un organe de coincement tel qu'un coin 113 immobilisé sur l'arbre 107 par une vis non représentée. Le câble 112 entoure l'arbre 107 sur au moins un tour et ses deux extrémités 112A et 112B sont respectivement solidarisées aux deux extrémités 111A et 111B de la barrette 111 correspondante, de telle sorte que le mouvement de rotation alterné F5 de l'arbre 107 est transmis sous la forme d'un mouvement de translation alternée F2 à l'aiguille 105 correspondante.In the second embodiment of the invention shown in figure 3 , the elements similar to those of the first embodiment have identical references increased by 100. The output shaft 107 of a brushless motor 106 extends perpendicularly to the feed direction F 3 of the warp threads 101 d a loom M whose sickles 104 have an alternating rotational movement F 1 about an axis X-X '. Each mesh needle 105 is stuck on a bar 111 which is connected to the shaft 107 by means of a cable 112 which is stowed on the shaft 107 by means of a wedging member such as a wedge 113 immobilized on the shaft 107 by a screw not shown. The cable 112 surrounds the shaft 107 over at least one turn and its two ends 112A and 112B are respectively secured to the two ends 111A and 111B of the corresponding bar 111, so that the alternating rotation movement F 5 of the shaft 107 is transmitted in the form of an alternating translation movement F 2 to the corresponding needle 105.

Comme précédemment, les paramètres d'alimentation du moteur 106 permettent de commander la course des aiguilles 105. En outre, les éléments 105, 111 et 112 sont déplaçables parallèlement à l'axe longitudinal Y-Y' de l'arbre 107.As previously, the power supply parameters of the motor 106 make it possible to control the travel of the hands 105. In addition, the elements 105, 111 and 112 are movable parallel to the longitudinal axis YY 'of the shaft 107.

Dans le troisième mode de réalisation de l'invention représenté à la figure 4, les éléments analogues à ceux du premier mode de réalisation portent des références identiques augmentées de 200. Dans ce mode de réalisation, un moteur sans balai 206 entraîne, selon un mouvement de rotation alternée F5, un arbre de sortie 207 sur lequel des bielles 215 sont clavetées et montées coulissantes le long de l'axe longitudinal Y-Y' de l'arbre 207. Ces bielles s'étendent radialement par rapport à l'axe longitudinal Y-Y' et sont chacune associées par une tige 217 à une barrette 211 sur laquelle est montée une aiguille de maillage 205.In the third embodiment of the invention shown in figure 4 , elements similar to those of the first embodiment carry identical references increased by 200. In this embodiment, a brushless motor 206 drives, in an alternating rotational movement F 5 , an output shaft 207 on which rods 215 are keyed and slidably mounted along the longitudinal axis YY 'of the shaft 207. These rods extend radially relative to the longitudinal axis YY' and are each associated by a rod 217 to a bar 211 on which is mounted a mesh needle 205.

Selon une variante non représentée de l'invention, chaque bielle 215 pourrait être attelée par une tige 217 directement à une aiguille 205.According to a variant not shown of the invention, each connecting rod 215 could be coupled by a rod 217 directly to a needle 205.

Comme précédemment, les paramètres d'alimentation du moteur 206 permettent de régler la course de va-et-vient F2 des aiguilles 205 dont la position parallèlement à l'axe Y-Y' est réglable.As previously, the power supply parameters of the motor 206 make it possible to adjust the reciprocating stroke F 2 of the hands 205 whose position parallel to the axis YY 'is adjustable.

Quel que soit le mode de réalisation considéré, un doigt de maillage peut, le cas échéant, être associé à la faucille et à l'aiguille de maillage de tissage de chacun des rubans R.Whatever the embodiment considered, a mesh finger may, where appropriate, be associated with the sickle and the weave mesh needle of each of the R ribbons.

Au sens de la présente demande, l'arbre de sortie d'un actionneur rotatif électrique est un arbre entraîné par cet actionneur, qu'il s'agisse d'un arbre directement relié au rotor de l'actionneur ou d'un arbre solidarisé à un arbre lui-même relié à un tel rotor.For the purposes of the present application, the output shaft of an electric rotary actuator is a shaft driven by this actuator, whether it is a shaft directly connected to the rotor of the actuator or of a solidarized shaft. to a tree itself connected to such a rotor.

Différents types d'actionneurs rotatifs électriques peuvent être utilisés dans le cadre de la présente invention et, notamment, des moteurs de type pas à pas ou tout autre actionneur permettant un mouvement rotatif en aller-retour et dont les paramètres de mouvement, tels que la vitesse, la position instantanée et l'amplitude, sont réglables.Various types of electric rotary actuators can be used in the context of the present invention and, in particular, stepper-type motors or any other actuator allowing rotational movement back and forth and whose movement parameters, such as the speed, the instantaneous position and the amplitude, are adjustable.

Claims (10)

  1. Device for driving meshing needles in a sickle-type weaving loom, characterized in that it comprises an electric rotary actuator (6; 106; 206) of which the output shaft (7; 107; 207) is kinematically connected, by means (8, 9; 111, 112; 215, 217) for transforming a rotary movement (F5) into a translational movement (F2), to a plurality of meshing needles (5; 105; 205).
  2. Device according to Claim 1, characterized in that said means (8, 9; 111, 112; 215, 217) for transforming movement (F5, F2) are distributed over the length of said shaft (7; 107; 207) and make it possible each to drive a meshing needle (5; 105; 205).
  3. Device according to Claim 2, characterized in that the position of said movement transformation means (8, 9; 111, 112; 215, 217) along (Y-Y') said shaft (7; 107; 207) is adjustable (F4).
  4. Device according to one of the preceding Claims, characterized in that it comprises at least one pinion (8) driven in rotation by said shaft (7) and in mesh with a rack (9) fast with a meshing needle (5).
  5. Device according to Claims 3 and 4, characterized in that said pinion (8) is mounted to slide (F4) with reduced clearance along said shaft (7).
  6. Device according to one of Claims 4 or 5, characterized in that said shaft (7) has a non-circular outer section (71), while said pinion (8) is provided with an opening (81) for passage of said shaft, said opening having a profile at least in part substantially complementary of said section.
  7. Device according to one of Claims 1 or 2, characterized in that it comprises at least one flexible element (112) fastened and partially wound around said shaft (107), said flexible element being connected to a meshing needle (105) or to a member (111) for driving a meshing needle in translation.
  8. Device according to one of Claims 1 or 2, characterized in that said shaft is equipped with at least one element (215) projecting radially, particularly of connecting rod or cam type, which extends outwardly with respect to said shaft and which is coupled (217) to one of said meshing needles (205) or to a member (211) for driving a meshing needle in translation.
  9. Device according to one of Claims 4 to 8, characterized in that said meshing needle (5; 105; 205) is removably connected on said rack (9) or said member (111).
  10. Weaving loom (M) incorporating sickles (4; 104) equipped with a drive device (6-10; 106-112; 206-217) according to one of the preceding Claims.
EP05356085.0A 2004-05-19 2005-05-18 Device for driving knitting needles and loom with such a device Not-in-force EP1598460B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0405491A FR2870548B1 (en) 2004-05-19 2004-05-19 DEVICE FOR DRAWING MESH NEEDLES AND WOVEN WEB EQUIPPED WITH SUCH A DEVICE
FR0405491 2004-05-19

Publications (2)

Publication Number Publication Date
EP1598460A1 EP1598460A1 (en) 2005-11-23
EP1598460B1 true EP1598460B1 (en) 2013-07-03

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EP05356085.0A Not-in-force EP1598460B1 (en) 2004-05-19 2005-05-18 Device for driving knitting needles and loom with such a device

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EP (1) EP1598460B1 (en)
KR (1) KR101208389B1 (en)
CN (1) CN1699660B (en)
FR (1) FR2870548B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101851827B (en) * 2009-04-01 2011-06-29 明新弹性织物（中国）有限公司 Double-layer half-moon-shaped solid cored ray flower braid, braiding method and hooked needle assembly therefor
CN103451833B (en) * 2013-08-23 2015-01-07 绍兴县通用提花机械有限公司 Knitting machine for gunny bag
KR101673436B1 (en) * 2015-06-15 2016-11-07 주식회사 영도트림아트 High speed ribbon loom having cone shuttle
EP3269855A1 (en) * 2016-07-13 2018-01-17 Textilma Ag Ribbon needle loom

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752195A (en) * 1970-03-23 1973-08-14 Riordan J Loom
CS162120B1 (en) * 1972-02-08 1975-07-15
IT1046026B (en) 1974-02-14 1980-06-30 Gardella Spa Adriano DEVICE FOR THE FORMATION OF THE CIMOSSA IN TEXTILE FRAMES WITHOUT SHUTTLE
JPS5182064A (en) 1974-12-28 1976-07-19 Yoshida Kogyo Kk
CH661067A5 (en) * 1983-10-06 1987-06-30 Textilma Ag NEEDLEBAND WAVING MACHINE.

Also Published As

Publication number Publication date
CN1699660B (en) 2011-03-23
FR2870548B1 (en) 2006-06-30
KR20060046074A (en) 2006-05-17
KR101208389B1 (en) 2012-12-05
FR2870548A1 (en) 2005-11-25
EP1598460A1 (en) 2005-11-23
CN1699660A (en) 2005-11-23

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