EP1743058B1 - Level adjustment device, cam harness mounting mechanism incorporating said device and weaving machine fitted with said mechanism - Google Patents

Level adjustment device, cam harness mounting mechanism incorporating said device and weaving machine fitted with said mechanism Download PDF

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Publication number
EP1743058B1
EP1743058B1 EP05744362A EP05744362A EP1743058B1 EP 1743058 B1 EP1743058 B1 EP 1743058B1 EP 05744362 A EP05744362 A EP 05744362A EP 05744362 A EP05744362 A EP 05744362A EP 1743058 B1 EP1743058 B1 EP 1743058B1
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EP
European Patent Office
Prior art keywords
eccentric
axis
levers
shaft
cam
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EP05744362A
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German (de)
French (fr)
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EP1743058A1 (en
Inventor
Jean-Pierre Pages
Patrick Iltis
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Staubli Faverges SCA
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Staubli Faverges SCA
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C5/00—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices
    • D03C5/02—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices operated by rotating cams
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C5/00—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices
    • D03C5/005—Leveling mechanisms

Definitions

  • the invention relates to a device for leveling the position of frames of a loom equipped with a cam armor mechanism.
  • the invention also relates to a weave mechanism comprising such a device and to a loom equipped with such a mechanism.
  • camming armor mechanisms which comprise a series of oscillating levers in number equal to that of the frames of healds to be mounted on the loom, each oscillating lever being intended to be coupled to the loom.
  • one of the frames and equipped with two rollers which cooperate with the two tracks of a complementary cam driven in rotation by a common shaft.
  • the invention intends to remedy more particularly by proposing a leveling device which is particularly simple to construct and to use and which makes it possible to move with good precision the various roller levers of a cam armor mechanism. .
  • the invention relates to a device for leveling the position of the frames of a loom equipped with a cam armor mechanism, these frames being actuated by oscillating levers provided with follower rollers and mounted on a common shaft whose position relative to the frame of the mechanism is variable by means of at least one eccentric.
  • This device is characterized in that the angular orientation of the eccentric is controlled by means of a motor assembly articulated on the frame about an axis generally parallel to the axis of pivoting of the eccentric, the shaft output of this motor assembly being secured in rotation with, or formed by, a threaded rod engaged in a captive nut of an actuating arm of the eccentric.
  • the threaded rod driven in rotation by the motor directly drives the captive nut of the operating arm, which has the effect of rotating the operating arm about the pivot axis of the eccentric, that is to say, to control the positioning of the common shaft of the oscillating levers with rollers along its trajectory in an arc imposed by the eccentric.
  • the invention also relates to a weaving cam mechanism for a loom which comprises a leveling device as described above.
  • a weaving cam mechanism for a loom which comprises a leveling device as described above.
  • Such a mechanism is more economical, more reliable and easier to implement, especially for leveling frames of the trade, than known equipment.
  • the invention relates to a loom equipped with a weave mechanism as mentioned above. Such a craft is easier to use than those of the state of the art.
  • the loom M represented at figure 1 consists of several heald frames, of which only one is represented at figure 1 with the reference 1.
  • the various frames of the trade M are driven by a movement of vertical oscillations represented by the double arrow F 1 and printed by a cam mechanism 10 whose output levers 11 respectively attack rods 12 associated with angled levers 13 connected to each other and to the frame 1 by connecting rods 14.
  • the levers 11 are provided in number equivalent to the number of heald frame 1 and pivotally mounted, as shown on the double arrow F 2 , about the longitudinal axis of a common shaft 15 supported by the frame 16 of the mechanical 10.
  • the shaft 15 is equipped at its two ends with two eccentrics 17 and 17 'which themselves support the shaft 15 and which are supported by two non-represented bearings defined by the frame 16.
  • the mechanism 10 also comprises a plurality of complementary cams 18 whose conjugate tracks 18A and 18B support the rollers 19A and 19B of the same lever 11.
  • each lever 11 follows a movement imposed by the geometry of the tracks 18A and 18B of the cam 18 to which it is associated.
  • a conical pair 20 is mounted at the end of the shaft 21 common to the cams 18. For clarity of the drawing, the conical torque 20 is shown only at figures 1 and 2 .
  • an electric motor 40 is mounted on a support 41 hinged about an axis X 42 defined by two bearings, only one of which is visible at the figure 2 with the reference 42, these bearings being carried by a median portion 16A of the frame 16.
  • the X axis 42 is generally parallel to the X axes 15 , X 17 and X 21 .
  • the assembly formed of the elements 40 and 41 can pivot about the X axis 42 as represented by the double arrow F 3 .
  • the output shaft 40A of the motor 40 is received in a sleeve 43 maintained by a bearing 44 in the support 41.
  • a key 45 makes it possible to associate in rotation the shaft 40A and the sleeve 43.
  • a threaded rod 46 is engaged in the sleeve 43 and secured thereto in rotation by a pin 47.
  • the threaded rod can be rotated by the motor 40 in a direction that depends on the motor supply current 40 .
  • the output shaft of the motor 40 could protrude outside the support 41 and be threaded.
  • a nut 50 whose thread is adapted to the threading of the rod 46, is mounted on this rod and held prisoner at the end of an operating arm 60 integral with the eccentric 17 and extending substantially in a radial direction. with respect to the X axis 17 .
  • the arm 60 which makes it possible to exert a torque for rotating the eccentric 17 around the X axis 17 , comprises a main portion 60A and a plate 60B attached to the portion 60A.
  • the nut 50 is made a chappe between the elements 60A and 60B.
  • the motor 40 When it is necessary to move the various oscillating levers 11 towards their leveling position, the motor 40 is actuated so as to drive the threaded rod 46 in a direction of rotation R inducing a displacement of the nut 50 in the direction of the support 41.
  • This displacement has the effect of rotating the arm 60 and the eccentric 17 in the direction of the arrow F 5 , which has the effect of rotating, in the same direction, the geometric axis X 15 about the axis geometric X 17 thus moving the shaft 15 away from the shaft 21 along an arcuate path C shown in phantom lines at the figure 3 .
  • a stop 70 is mounted on the frame 16 and carries a contact switch 71 provided with a rod 72 against which a surface 62 of the arm 60 rests, as represented at figure 5 . This makes it possible to detect that the eccentrics 17 and 17 'are in an end-of-travel position where the rollers of the various levers 11 are at reduced clearance with the conjugate tracks of the associated cams 18.
  • the switch 71 is actuated, the power supply of the motor 40 is interrupted and the weaving can take place.
  • the arm 60 is extended by an extension diametrically opposite the end of the arm 60 on which the nut 50 pivots and which abuts against a surface 73 of the abutment 70 in the configuration of the figure 4 .
  • a switch of the type of the switch 71 may be provided on the stop 70 to detect the fact that the armor mechanics is in the leveling configuration.
  • the invention is not limited to the single embodiment described and may, in particular, be implemented with the devices shown in FIGS. figures 2 and 5 of EP-B-0 580 528 .
  • the axis of articulation of the motor assembly may be located opposite the output shaft of the motor relative to this motor, that is to say , in the representation of the figures, above the engine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
  • Measurement Of Force In General (AREA)

Abstract

The invention relates to a weaving machine which is fitted with a cam harness mounting mechanism (10), wherein the frames are actuated by oscillating levers (11) provided with cam followers (19A) and mounted on a common shaft (15) whereby the position thereof can be varied in relation to the frame (16) with the aid of at least one eccentric (17). The angular orientation of said eccentric (17) is controlled with the aid of a motorization unit (40, 41) which is articulated (en 42) on the frame (16) about an axis (X42) which is globally parallel to the pivoting axis (X17) of the eccentric l (17), and the output shaft of the motorization unit (40, 41) is rotationally coupled to or formed by, a threaded rod (46) which is engaged in a plate nut (50) of a maneuvering arm (60) of the eccentric (17).

Description

L'invention a trait à un dispositif de nivelage de la position des cadres d'un métier à tisser équipé d'une mécanique d'armure à cames. L'invention a également trait à une mécanique d'armure comprenant un tel dispositif ainsi qu'à un métier à tisser équipé d'une telle mécanique.The invention relates to a device for leveling the position of frames of a loom equipped with a cam armor mechanism. The invention also relates to a weave mechanism comprising such a device and to a loom equipped with such a mechanism.

Dans le domaine des métiers à tisser, on connaît des mécaniques d'armure à cames qui comprennent une série de leviers oscillants en nombre égal à celui des cadres de lisses à monter sur le métier, chaque levier oscillant étant prévu pour être attelé à l'un des cadres et équipé de deux galets qui coopèrent avec les deux pistes d'une came complémentaire entraînée en rotation par un arbre commun. Lors de certaines opérations de maintenance ou de réglage d'un métier à tisser, il est nécessaire d'amener tous les cadres du métier à un même niveau. Tel est en particulier le cas lorsqu'on doit procéder à la réparation de fils de chaîne cassés.In the field of looms, there are known camming armor mechanisms which comprise a series of oscillating levers in number equal to that of the frames of healds to be mounted on the loom, each oscillating lever being intended to be coupled to the loom. one of the frames and equipped with two rollers which cooperate with the two tracks of a complementary cam driven in rotation by a common shaft. During certain maintenance operations or adjustment of a loom, it is necessary to bring all the executives of the trade to the same level. This is particularly the case when it is necessary to repair broken warp threads.

Pour ce faire, il est connu de EP-A-0 580 528 de monter les différents leviers à galets sur un excentrique et de faire tourner cet excentrique pour amener les différents leviers dans une position commune dite de nivelage. Dans ce genre de dispositif, la rotation de l'excentrique est commandée par un moto-réducteur à pignon droit ou par un réducteur à roue et vis sans fin. Le rapport de réduction de ces matériels doit être élevé, ce qui induit l'utilisation de plusieurs étages réducteurs pour les réducteurs à pignon droit. Dans le cas d'un réducteur à roue et vis sans fin, un tel matériel est volumineux, complexe et de réglage délicat. Dans tous les cas, ces réducteur sont relativement coûteux.To do this, it is known to EP-A-0 580 528 to mount the various roller levers on an eccentric and rotate this eccentric to bring the different levers in a common so-called leveling position. In this type of device, the rotation of the eccentric is controlled by a geared gear reducer or by a gearbox wheel and worm. The reduction ratio of these materials must be high, which induces the use of several reducing stages for the spur gearboxes. In the case of a wheel and worm gearbox, such material is voluminous, complex and delicate setting. In all cases, these reductants are relatively expensive.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un dispositif de nivelage particulièrement simple à construire et à utiliser et permettant de déplacer avec une bonne précision les différents leviers à galets d'une mécanique d'armure à cames.It is these drawbacks that the invention intends to remedy more particularly by proposing a leveling device which is particularly simple to construct and to use and which makes it possible to move with good precision the various roller levers of a cam armor mechanism. .

Dans cet esprit, l'invention concerne un dispositif de nivelage de la position des cadres d'un métier à tisser équipé d'une mécanique d'armure à cames, ces cadres étant actionnés par des leviers oscillants pourvus de galets suiveurs et montés sur un arbre commun dont la position par rapport au bâti de la mécanique est variable au moyen d'au moins un excentrique. Ce dispositif est caractérisé en ce que l'orientation angulaire de l'excentrique est commandé au moyen d'un ensemble de motorisation articulé sur le bâti autour d'un axe globalement parallèle à l'axe de pivotement de l'excentrique, l'arbre de sortie de cet ensemble de motorisation étant solidaire en rotation avec, ou formé par, une tige filetée engagée dans un écrou prisonnier d'un bras de manoeuvre de l'excentrique.In this spirit, the invention relates to a device for leveling the position of the frames of a loom equipped with a cam armor mechanism, these frames being actuated by oscillating levers provided with follower rollers and mounted on a common shaft whose position relative to the frame of the mechanism is variable by means of at least one eccentric. This device is characterized in that the angular orientation of the eccentric is controlled by means of a motor assembly articulated on the frame about an axis generally parallel to the axis of pivoting of the eccentric, the shaft output of this motor assembly being secured in rotation with, or formed by, a threaded rod engaged in a captive nut of an actuating arm of the eccentric.

Grâce à l'invention, la tige filetée entraînée en rotation par le moteur attaque directement l'écrou prisonnier du bras de manoeuvre, ce qui a pour effet de faire tourner ce bras de manoeuvre autour de l'axe de pivotement de l'excentrique, c'est-à-dire de contrôler le positionnement de l'arbre commun des leviers oscillants à galets le long de sa trajectoire en arc de cercle imposée par l'excentrique.Thanks to the invention, the threaded rod driven in rotation by the motor directly drives the captive nut of the operating arm, which has the effect of rotating the operating arm about the pivot axis of the eccentric, that is to say, to control the positioning of the common shaft of the oscillating levers with rollers along its trajectory in an arc imposed by the eccentric.

Selon des aspects avantageux mais non obligatoires de l'invention, un dispositif de nivelage peut incorporer une ou plusieurs des caractéristiques suivantes :

  • L'écrou est articulé par rapport au bras de manoeuvre, au moins autour d'un axe globalement parallèle à l'axe de pivotement de l'excentrique.
  • Le bras de manoeuvre est pourvu d'une surface d'appui contre une butée de fin de course lorsque l'excentrique est dans une position compatible avec l'utilisation de la mécanique d'armure pour le tissage.
  • Un organe entraîné par l'excentrique est apte à venir en appui contre une butée de fin de course lorsque les leviers sont en position de nivelage. Dans ce cas, cet organe est avantageusement solidaire du bras de manoeuvre.
  • La butée de fin de course est équipée de moyens de détection de l'appui ou bras ou de l'organe précité dans l'une des positions sus-mentionnées.
  • En configuration d'utilisation de la mécanique d'armure pour tissage, l'axe géométrique de l'arbre commun aux leviers, l'axe géométrique de l'arbre d'entraînement des cames et l'axe géométrique de pivotement de l'excentrique sont sensiblement parallèles et co-planaires. Cet aspect de l'invention concoure à une bonne stabilité de la mécanique d'armure en configuration de tissage.
  • L'arbre commun au levier est supporté par rapport au bâti au moyen de deux excentriques disposés chacun au voisinage d'une de ses extrémités.
According to advantageous but not compulsory aspects of the invention, a leveling device can incorporate one or more of the following features:
  • The nut is articulated relative to the operating arm, at least about an axis generally parallel to the axis of pivoting of the eccentric.
  • The operating arm is provided with a bearing surface against a limit stop when the eccentric is in a position compatible with the use of weave mechanics for weaving.
  • A member driven by the eccentric is able to bear against an end stop when the levers are in the leveling position. In this case, this member is advantageously secured to the operating arm.
  • The limit stop is equipped with means for detecting the support or arm or the aforementioned member in one of the abovementioned positions.
  • In the configuration of use of weave armor mechanics, the geometric axis of the shaft common to the levers, the geometric axis of the cam drive shaft and the geometric pivot axis of the eccentric are substantially parallel and co-planar. This aspect of the invention contributes to good stability of the weave mechanics in the weaving configuration.
  • The shaft common to the lever is supported relative to the frame by means of two eccentric members each disposed in the vicinity of one of its ends.

L'invention concerne également une mécanique d'armure à cames pour métier à tisser qui comprend un dispositif de nivelage tel que décrit ci-dessus. Une telle mécanique est plus économique, plus fiable et plus aisée à mettre en oeuvre, notamment pour le nivelage des cadres du métier, que les matériels connus.The invention also relates to a weaving cam mechanism for a loom which comprises a leveling device as described above. Such a mechanism is more economical, more reliable and easier to implement, especially for leveling frames of the trade, than known equipment.

L'invention concerne enfin un métier à tisser équipé d'une mécanique d'armure telle que mentionnée ci-dessus. Un tel métier est plus facile à utiliser que ceux de l'état de la technique.Finally, the invention relates to a loom equipped with a weave mechanism as mentioned above. Such a craft is easier to use than those of the state of the art.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre d'un métier à tisser et d'une mécanique d'armure équipés d'un dispositif de nivelage conforme à l'invention, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une représentation schématique partielle de principe d'un métier à tisser conforme à l'invention ;
  • la figure 2 est une représentation schématique à plus grande échelle de la mécanique d'armure du métier de la figure 1 en configuration de tissage ;
  • la figure 3 représente certaines parties de la mécanique de la figure 2 lorsque celles-ci passent d'une configuration de tissage à une configuration de nivelage ;
  • la figure 4 est une vue analogue à la figure 3, alors que la mécanique est en configuration de nivelage ;
  • la figure 5 est une vue à plus grande échelle du détail V à la figure 2 ;
  • la figure 6 est une vue à plus grande échelle de détail VI à la figure 4 et
  • la figure 7 est une vue en perspective de certains éléments constitutifs du dispositif de nivelage de la mécanique représentée sur les figures 2 à 6.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of a loom and armor mechanics equipped with a leveling device according to the invention, given solely by way of example and with reference to the appended drawings in which:
  • the figure 1 is a partial schematic representation of a loom according to the invention;
  • the figure 2 is a schematic representation on a larger scale of the armor mechanics of the craft of the figure 1 in weaving configuration;
  • the figure 3 represents some parts of the mechanics of the figure 2 when they move from a weaving configuration to a leveling configuration;
  • the figure 4 is a view similar to the figure 3 , while the mechanism is in leveling configuration;
  • the figure 5 is a larger-scale view of detail V to the figure 2 ;
  • the figure 6 is a larger-scale view of detail VI to the figure 4 and
  • the figure 7 is a perspective view of certain constituent elements of the leveling device of the mechanics shown in Figures 2 to 6 .

Le métier à tisser M représenté à la figure 1 comprend plusieurs cadres de lisses, dont un seul est représenté à la figure 1 avec la référence 1. Les différents cadres du métier M sont animés d'un mouvement d'oscillations verticales représenté par la double flèche F1 et imprimé par une mécanique à cames 10 dont les leviers de sortie 11 attaquent respectivement des bielles 12 associées à des leviers coudés 13 reliés entre eux et au cadre 1 par des bielles 14.The loom M represented at figure 1 consists of several heald frames, of which only one is represented at figure 1 with the reference 1. The various frames of the trade M are driven by a movement of vertical oscillations represented by the double arrow F 1 and printed by a cam mechanism 10 whose output levers 11 respectively attack rods 12 associated with angled levers 13 connected to each other and to the frame 1 by connecting rods 14.

Les leviers 11 sont prévus en nombre équivalent au nombre de cadre de lisses 1 et montés pivotants, comme représenté sur la double flèche F2, autour de l'axe longitudinal d'un arbre commun 15 soutenu par le bâti 16 de la mécanique 10. L'arbre 15 est équipé, à ses deux extrémités, de deux excentriques 17 et 17' qui supportent eux-mêmes l'arbre 15 et qui sont supportés par deux paliers non représentés définis par le bâti 16.The levers 11 are provided in number equivalent to the number of heald frame 1 and pivotally mounted, as shown on the double arrow F 2 , about the longitudinal axis of a common shaft 15 supported by the frame 16 of the mechanical 10. The shaft 15 is equipped at its two ends with two eccentrics 17 and 17 'which themselves support the shaft 15 and which are supported by two non-represented bearings defined by the frame 16.

La mécanique 10 comprend également plusieurs cames complémentaires 18 dont les pistes conjuguées 18A et 18B reçoivent en appui les galets 19A et 19B d'un même levier 11. Ainsi, chaque levier 11 suit un mouvement imposé par la géométrie des pistes 18A et 18B de la came 18 à laquelle il est associé.The mechanism 10 also comprises a plurality of complementary cams 18 whose conjugate tracks 18A and 18B support the rollers 19A and 19B of the same lever 11. Thus, each lever 11 follows a movement imposed by the geometry of the tracks 18A and 18B of the cam 18 to which it is associated.

Un couple conique 20 est monté à l'extrémité de l'arbre 21 commun aux cames 18. Pour la clarté du dessin, le couple conique 20 est représenté uniquement aux figures 1 et 2.A conical pair 20 is mounted at the end of the shaft 21 common to the cams 18. For clarity of the drawing, the conical torque 20 is shown only at figures 1 and 2 .

Un capot 16B monté sur le bâti 16 et représenté par sa silhouette en traits mixtes uniquement aux figures 1 et 2 permet d'isoler les éléments 15 à 21 de l'extérieur.A hood 16B mounted on the frame 16 and represented by its silhouette in phantom only with the figures 1 and 2 allows to isolate the elements 15 to 21 from the outside.

A la figure 2, la trace de l'arbre 15 est représentée en traits mixtes et l'on note X15 son axe géométrique. De la même manière, on note X17 l'axe géométrique de pivotement des excentriques 17 et 17' et X21 l'axe géométrique de l'arbre 21. Ces axes sont globalement parallèles entre eux.To the figure 2 , The trace of the shaft 15 is shown in phantom and denoted its axis X 15. In the same way, we write X 17 the geometric pivot axis eccentric 17 and 17 'and X 21 the geometric axis of the shaft 21. These axes are generally parallel to each other.

Dans la configuration de tissage représentée à la figure 2, dans laquelle les leviers oscillants 11 sont prévus pour entraîner les cadres de lisse 1 et équivalents, les axes X15 et X17 et X21 sont co-planaires, ce qui induit que les efforts d'écartement entre les arbres 15 et 21 résultant de l'action des cames sur les leviers ne tendent pas à faire tourner l'excentrique 17 et à charger son dispositif de commande.In the weave configuration shown in figure 2 , in which the oscillating levers 11 are provided for driving the hoop frames 1 and the like, the X axes 15 and X 17 and X 21 are co-planar, which induces that the spacing forces between the shafts 15 and 21 resulting the action of the cams on the levers do not tend to turn the eccentric 17 and load its control device.

Lorsqu'on souhaite procéder au nivelage des cadres 1, il convient d'amener les leviers 11 dans la configuration de la figure 4 où les galets 19A et 19B sont écartés des cames 18 et où les leviers 11 ont tous la même position angulaire par rapport à l'axe X15.When it is desired to level the frames 1, it is necessary to bring the levers 11 into the configuration of the figure 4 where the rollers 19A and 19B are spaced from the cams 18 and where the levers 11 all have the same angular position with respect to the X axis 15 .

Pour ce faire, un moteur électrique 40 est monté sur un support 41 articulé autour d'un axe X42 défini par deux paliers, dont un seul est visible à la figure 2 avec la référence 42, ces paliers étant portés par une partie médiane 16A du bâti 16. L'axe X42 est globalement parallèle aux axes X15, X17 et X21.To do this, an electric motor 40 is mounted on a support 41 hinged about an axis X 42 defined by two bearings, only one of which is visible at the figure 2 with the reference 42, these bearings being carried by a median portion 16A of the frame 16. The X axis 42 is generally parallel to the X axes 15 , X 17 and X 21 .

Ainsi, l'ensemble formé des éléments 40 et 41 peut pivoter autour de l'axe X42 comme représenté par la double flèche F3.Thus, the assembly formed of the elements 40 and 41 can pivot about the X axis 42 as represented by the double arrow F 3 .

L'arbre de sortie 40A du moteur 40 est reçu dans un manchon 43 maintenu grâce à un palier 44 dans le support 41. Une clavette 45 permet d'associer en rotation l'arbre 40A et le manchon 43. Par ailleurs, une tige filetée 46 est engagée dans le manchon 43 et solidarisée à celui-ci en rotation grâce à une goupille 47. Ainsi, la tige filetée peut-elle être entraînée en rotation par le moteur 40 dans un sens qui dépend du courant d'alimentation du moteur 40.The output shaft 40A of the motor 40 is received in a sleeve 43 maintained by a bearing 44 in the support 41. A key 45 makes it possible to associate in rotation the shaft 40A and the sleeve 43. Moreover, a threaded rod 46 is engaged in the sleeve 43 and secured thereto in rotation by a pin 47. Thus, the threaded rod can be rotated by the motor 40 in a direction that depends on the motor supply current 40 .

En variante, l'arbre de sortie du moteur 40 pourrait faire saillie à l'extérieur du support 41 et être fileté.Alternatively, the output shaft of the motor 40 could protrude outside the support 41 and be threaded.

Un écrou 50, dont le taraudage est adapté au filetage de la tige 46, est monté sur cette tige et retenu prisonnier à l'extrémité d'un bras de manoeuvre 60 solidaire de l'excentrique 17 et s'étendant sensiblement selon une direction radiale par rapport à l'axe X17. Le bras 60, qui permet d'exercer un couple de mise en rotation de l'excentrique 17 autour de l'axe X17, comprend une partie principale 60A et une plaque 60B rapportée sur la partie 60A. L'écrou 50 est pris en chappe entre les éléments 60A et 60B. Il est pourvu de deux tourillons, dont un seul est visible avec la référence 61, qui sont engagés dans les alésages correspondants des éléments 60A et 60B, de telle sorte que l'écrou 50 est articulé par rapport au bras 60 autour d'un axe X61 sensiblement parallèle aux axes X15, X17, X21 et X42.A nut 50, whose thread is adapted to the threading of the rod 46, is mounted on this rod and held prisoner at the end of an operating arm 60 integral with the eccentric 17 and extending substantially in a radial direction. with respect to the X axis 17 . The arm 60, which makes it possible to exert a torque for rotating the eccentric 17 around the X axis 17 , comprises a main portion 60A and a plate 60B attached to the portion 60A. The nut 50 is made a chappe between the elements 60A and 60B. It has two trunnions, only one of which is visible with the reference 61, which are engaged in the corresponding bores of the elements 60A and 60B, so that the nut 50 is hinged relative to the arm 60 about an axis X 61 substantially parallel to the axes X 15 , X 17 , X 21 and X 42 .

Il est à noter que la plaque 60B n'est pas représentée sur les figures 2 à 6 pour la clarté du dessin.It should be noted that the plate 60B is not represented on the Figures 2 to 6 for the clarity of the drawing.

Lorsqu'il convient de déplacer les différents leviers oscillants 11 vers leur position de nivelage, le moteur 40 est actionné de façon à entraîner la tige filetée 46 dans un sens de rotation R induisant un déplacement de l'écrou 50 en direction du support 41.When it is necessary to move the various oscillating levers 11 towards their leveling position, the motor 40 is actuated so as to drive the threaded rod 46 in a direction of rotation R inducing a displacement of the nut 50 in the direction of the support 41.

Ce déplacement a pour effet de faire tourner le bras 60 et l'excentrique 17 dans le sens de la flèche F5, ce qui a pour effet de faire tourner, dans le même sens, l'axe géométrique X15 autour de l'axe géométrique X17 en éloignant ainsi l'arbre 15 de l'arbre 21 selon une trajectoire en arc de cercle C représentée en traits mixtes à la figure 3.This displacement has the effect of rotating the arm 60 and the eccentric 17 in the direction of the arrow F 5 , which has the effect of rotating, in the same direction, the geometric axis X 15 about the axis geometric X 17 thus moving the shaft 15 away from the shaft 21 along an arcuate path C shown in phantom lines at the figure 3 .

En passant par la position intermédiaire de la figure 3, on peut ainsi atteindre la position de la figure 4 où tous les galets 19a et 19b des leviers 11 sont dégagés des cames 18, les leviers étant alignés, de telle sorte que les cadres 1 sont également alignés.Going through the intermediate position of the figure 3 , we can thus reach the position of the figure 4 where all the rollers 19a and 19b of the levers 11 are disengaged cams 18, the levers being aligned, so that the frames 1 are also aligned.

Le fait que l'ensemble formé du moteur 40 et du support 41 est monté oscillant autour de l'axe X12 permet d'atteindre les différentes orientations nécessaires de la tige filetée 46 au cours du mouvement de remontée de l'écrou 40 le long de cette tige et en direction du support 41, ces différentes orientations provenant de la variation de la distance horizontale d entre l'axe central X46 de la tige 46 et l'axe X17.The fact that the assembly formed of the motor 40 and the support 41 is mounted oscillating about the axis X 12 makes it possible to reach the different necessary orientations of the threaded rod 46 during the upward movement of the nut 40 along of this rod and towards the support 41, these different orientations resulting from the variation of the horizontal distance d between the central axis X 46 of the rod 46 and the X axis 17 .

Une butée 70 est montée sur le bâti 16 et porte un interrupteur à contact 71 muni d'une tige 72 contre laquelle vient en appui une surface 62 du bras 60, comme représenté à la figure 5. Ceci permet de détecter que les excentriques 17 et 17' sont bien dans une position de fin de course où les galets des différents leviers 11 se trouvent à jeu réduit avec les pistes conjuguées des cames 18 associées. Lorsque l'interrupteur 71 est actionné, l'alimentation du moteur 40 est interrompue et le tissage peut avoir lieu.A stop 70 is mounted on the frame 16 and carries a contact switch 71 provided with a rod 72 against which a surface 62 of the arm 60 rests, as represented at figure 5 . This makes it possible to detect that the eccentrics 17 and 17 'are in an end-of-travel position where the rollers of the various levers 11 are at reduced clearance with the conjugate tracks of the associated cams 18. When the switch 71 is actuated, the power supply of the motor 40 is interrupted and the weaving can take place.

En outre, le bras 60 se prolonge par une extension diamétralement opposée à l'extrémité du bras 60 sur laquelle tourillonne l'écrou 50 et qui vient en appui contre une surface 73 de la butée 70 dans la configuration de la figure 4. Selon une variante non représentée de l'invention, un interrupteur du type de l'interrupteur 71 peut être prévu sur la butée 70 pour détecter le fait que la mécanique d'armure est en configuration de nivelage.In addition, the arm 60 is extended by an extension diametrically opposite the end of the arm 60 on which the nut 50 pivots and which abuts against a surface 73 of the abutment 70 in the configuration of the figure 4 . According to a not shown variant of the invention, a switch of the type of the switch 71 may be provided on the stop 70 to detect the fact that the armor mechanics is in the leveling configuration.

L'invention n'est pas limitée au seul mode de réalisation décrit et peut, en particulier, être mise en oeuvre avec les dispositifs représentés aux figures 2 et 5 de EP-B-0 580 528 .The invention is not limited to the single embodiment described and may, in particular, be implemented with the devices shown in FIGS. figures 2 and 5 of EP-B-0 580 528 .

Selon une variante non représentée de l'invention, l'axe d'articulation de l'ensemble de motorisation peut être situé à l'opposé de l'arbre de sortie du moteur par rapport à ce moteur, c'est-à-dire, dans la représentation des figures, au-dessus du moteur.According to a variant not shown of the invention, the axis of articulation of the motor assembly may be located opposite the output shaft of the motor relative to this motor, that is to say , in the representation of the figures, above the engine.

Claims (10)

  1. A device for leveling the position of the frames (1) of a loom (M) fitted with a cam weave mechanism (10), said frames (1) being actuated by oscillating levers (11) provided with cam followers (19A) and mounted on a common shaft (15) whose position relative to the frame (16) of the mechanism can be varied by means of at least one eccentric (17, 17'), characterized in that the angular orientation of said eccentric (17, 17') is controlled by means of a drive assembly (40, 41) articulated (at 42) on said frame about an axis (X42) globally parallel with the pivoting axis (X17) of said eccentric, the output shaft (40A) of said drive assembly being fixedly attached in rotation with, or formed by, a threaded rod (46) engaged in a captive nut (50) of a maneuvering arm (60) of said eccentric (17).
  2. The device as claimed in claim 1, characterized in that said nut (50) is articulated relative to said maneuvering arm (60) at least about an axis (X61) globally parallel with said pivoting axis (X17) of said eccentric (17, 17').
  3. The device as claimed in one of the preceding claims, characterized in that said maneuvering arm (60) is provided with a surface (62) for pressing against an end-of-travel stop (70) when said eccentric (17, 17') is in a position (figures 2, 5) compatible with the use of the weave mechanism (10) for weaving.
  4. The device as claimed in one of the preceding claims, characterized in that it comprises a member (63) driven by said eccentric (17) and capable of pressing against an end-of-travel stop (73) when said levers (11) are in the leveling position (figures 4 and 6).
  5. The device as claimed in claim 4, characterized in that said member (63) is fixedly attached to said maneuvering arm (60).
  6. The device as claimed in one of claims 3 to 5, characterized in that said stop (70, 73) is fitted with means (71) for detecting the pressure of said arm (60) or of said member (63) in said position.
  7. The device as claimed in one of the preceding claims, characterized in that, in the configuration for using the weave mechanism for weaving (figures 2, 5), the geometric axis (X15) of the shaft (15) common to said levers (11), the geometric axis (X21) of the drive shaft (21) of said cams (20) and the geometric pivoting axis (X17) of said eccentric (17, 17') are substantially parallel and coplanar.
  8. The device as claimed in one of the preceding claims, characterized in that said shaft (15) common to said levers (11) is supported relative to said frame (16) by means of two eccentrics (17, 17') each placed in the vicinity of one of its ends.
  9. A cam weave mechanism (10) for a loom, characterized in that it comprises a leveling device (40-72) as claimed in one of the preceding claims.
  10. A loom (M) fitted with a weave mechanism (10) as claimed in claim 9.
EP05744362A 2004-03-29 2005-03-25 Level adjustment device, cam harness mounting mechanism incorporating said device and weaving machine fitted with said mechanism Active EP1743058B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0403218A FR2868090B1 (en) 2004-03-29 2004-03-29 DEVICE FOR LEVELING, MECHANICAL ARMOR WITH CAME INCORPORATING SUCH A DEVICE AND WEAVING FABRIC OF SUCH A MECHANICAL
PCT/FR2005/000725 WO2005098107A1 (en) 2004-03-29 2005-03-25 Level adjustment device, cam harness mounting mechanism incorporating said device and weaving machine fitted with said mechanism

Publications (2)

Publication Number Publication Date
EP1743058A1 EP1743058A1 (en) 2007-01-17
EP1743058B1 true EP1743058B1 (en) 2011-03-02

Family

ID=34944509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05744362A Active EP1743058B1 (en) 2004-03-29 2005-03-25 Level adjustment device, cam harness mounting mechanism incorporating said device and weaving machine fitted with said mechanism

Country Status (8)

Country Link
EP (1) EP1743058B1 (en)
JP (1) JP2007530815A (en)
KR (1) KR101245226B1 (en)
CN (1) CN1938462B (en)
AT (1) ATE500363T1 (en)
DE (1) DE602005026645D1 (en)
FR (1) FR2868090B1 (en)
WO (1) WO2005098107A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2113592B1 (en) 2008-04-30 2013-05-08 Groz-Beckert KG Excenter with levelling device
FR3043098B1 (en) 2015-10-29 2017-12-22 Staubli Sa Ets CROWN FORMING MACHINE AND WOVEN WEAR COMPRISING SUCH MOBILE FORMING MACHINE
FR3043097B1 (en) 2015-10-29 2017-12-22 Staubli Sa Ets ARMOR MECHANICAL COMPRISING A LEVELING DEVICE AND WEAVING COMPRISING AN ARMOR MECHANICAL MECHANICAL

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594775U (en) * 1982-06-30 1984-01-12 株式会社山田ドビ− Leveling device in tapepet opening device
JPH0721584Y2 (en) * 1990-03-19 1995-05-17 株式会社豊田自動織機製作所 Loom heald frame leveling device
JPH086055Y2 (en) * 1992-07-08 1996-02-21 株式会社山田ドビー Active cam leveling device
JP3320841B2 (en) * 1992-07-10 2002-09-03 シュトイブリー・ファベルゲ Cam mechanism used for loom
JP3855482B2 (en) * 1998-08-17 2006-12-13 株式会社豊田自動織機 Opening device in loom

Also Published As

Publication number Publication date
FR2868090B1 (en) 2006-05-26
KR101245226B1 (en) 2013-03-25
DE602005026645D1 (en) 2011-04-14
FR2868090A1 (en) 2005-09-30
EP1743058A1 (en) 2007-01-17
KR20060132961A (en) 2006-12-22
ATE500363T1 (en) 2011-03-15
JP2007530815A (en) 2007-11-01
CN1938462B (en) 2010-09-08
WO2005098107A1 (en) 2005-10-20
CN1938462A (en) 2007-03-28

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