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EP1794358B1 - Cam harness mounting mechanism, weaving machine fitted therewith, method for assembling said mechanism - Google Patents

Cam harness mounting mechanism, weaving machine fitted therewith, method for assembling said mechanism Download PDF

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Publication number
EP1794358B1
EP1794358B1 EP05744238A EP05744238A EP1794358B1 EP 1794358 B1 EP1794358 B1 EP 1794358B1 EP 05744238 A EP05744238 A EP 05744238A EP 05744238 A EP05744238 A EP 05744238A EP 1794358 B1 EP1794358 B1 EP 1794358B1
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EP
European Patent Office
Prior art keywords
shaft
cam
cams
frame
openings
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EP05744238A
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German (de)
French (fr)
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EP1794358A1 (en
Inventor
Jean-Pierre Pages
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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

Definitions

  • the invention relates to a cam armor mechanism for a loom as well as to a loom equipped with such a mechanism and to a method for assembling such a mechanism.
  • cam armor mechanics 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 hitched 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 cams which are generally in number between four and twelve, must be mounted on their drive shaft. This assembly must be carried out with great precision in order to avoid or to limit to a very large extent the clearances between the conjugate tracks of the cams and the follower rollers.
  • Such a mechanism of cam armor is known from FR 860 225 A .
  • the frame of the mechanism defines two half-bearings on which are reported clamps or flanges forming the other half of the bearings after the common shaft equipped with the cams has been put in place on the half-bearings formed by the frame.
  • This technique induces inaccuracies in the positioning of the shaft relative to the frame, so that the value of the distance between the axis of the camshaft and the axis of articulation of the oscillating levers can not be guaranteed with prediction, as well as the parallelism of these axes.
  • the invention intends to remedy more particularly by proposing an armor mechanism in which the mounting and disassembly of the cams can be carried out on the machine itself, without loss of time, without resorting to specific tools and without affecting the accuracy of the positioning of their common drive shaft relative to the frame of the mechanical and oscillating levers cooperating with these cams.
  • the invention relates to a weave mechanism for weaving looms, this mechanism comprising several cams mounted on a common drive shaft and provided with tracks of follower rollers themselves mounted on oscillating levers. , this drive shaft being supported by means of two orifices formed in two monobloc parts of the frame of mechanics and one of which is crossed by this tree.
  • This mechanism is characterized in that the aforementioned shaft extends, from the first orifice and towards the second orifice, over a length less than the distance between these orifices, while removable means forming an extension and support connect the end of the shaft located between these orifices at the second port and while the difference between the distance between the orifices and the length on which the shaft extends between these orifices is greater than the width of a cam.
  • a space is created between the end of the shaft and the part of the frame in which is formed the second orifice, which allows to use this space, before setting up the means forming extensions or after removal of these, to set up the cams on the tree already installed in the frame.
  • the cams are placed individually on their drive shaft, so that it is not necessary to use a barrel, each cam having a mass and a size compatible with easy handling.
  • the invention also relates to a loom equipped with a weave mechanism as previously described. Such a business is more economical, easier to configure and more reliable than known trades.
  • the loom M represented at figure 1 comprises several heald frames, only one of which is visible in this figure with the reference 1.
  • the various frames of the trade M are driven by a vertical oscillations movement represented by the double arrow F 1 and printed by a cam mechanism 10 of which the output levers 11 respectively attack connecting rods 12 associated with bent levers 13 and connected to each other and to the frames by connecting rods 14.
  • the levers 11 are provided in number equivalent to the number of heald frames 1 and pivotally mounted, as represented by the double arrow F 2 , around the axis longitudinal axis X 15 of a common shaft 15 supported by the frame 16 of the mechanism 10.
  • the mechanism 10 also comprises a plurality of complementary cams 18 each defining two tracks 18A and 18B on which are respectively supported rollers 19A and 19B carried by the levers 11.
  • the cams 18 are mounted on a common shaft 20 which is supported by the frame 16 and of which a first end 20A carries a wheel 21 with conical teeth intended to cooperate with a pinion 22 with conical teeth and forming a gearbox for driving the wheel.
  • shaft 20 about its longitudinal axis X 20 .
  • the frame 16 is pierced with two holes 16A and 16B with a circular section and whose respective central axes are generally aligned with each other and with the X axis 20 when the shaft 20 is in position.
  • the holes 16A and 16B are respectively formed in an intermediate rib 16C and in a side 16D of the frame 16 which are monobloc.
  • a bearing 23 is disposed in the orifice 16A and can support the shaft 20 which extends on either side of the rib 16C. From the orifice 16A, the shaft 20 extends towards the orifice 16B over a length L 20 which is strictly smaller than the distance D 16 between the orifices 16A and 16B, that is to say the distance between the facing faces 16C and 16D portions of the frame 16. It is thus created a space E shown in gray on the figure 3 of width l E equal to the difference of the distance D 16 and the length L 20 .
  • the space E can be used to place the cams 18 on the shaft 20 to the extent that the width E is greater than the width 18 of the cams 18.
  • a cam 18 can be inserted in the space E in the direction of the arrow F 3 , that is to say in a direction generally perpendicular to the axis X 20 , this cam 18 being inserted between the side 16D of the frame 16 and the free end 20B of the shaft 20.
  • the central bore 18C of the cam 18 is generally aligned with the axis X 20 , it is possible to move this cam in the direction of the arrow F 4 to the figure 3 , that is to say in the direction of the rib 16C, for this cam to surround the end 20B of the shaft 20. It can then angularly orientate the cam 20 to align an axial bore thereof provided for this effect with an angular indexing rod 24 previously placed in the corresponding aligned holes of the cams already installed on the shaft 20.
  • the end 20B of the shaft 20 is connected to the side 16D of the frame 16 by means of an end piece 40 and a sleeve 50 secured respectively with the shaft 20 and with the side 16D.
  • the tip 40 is intended to extend the shaft 20 in the direction of the orifice 16B and it is provided with a groove 40C intended to cooperate with a tenon 20C provided on the end 20B of the shaft 20, which allows to immobilize in rotation the elements 20 and 40 and thus secure the angular drive of the end piece 40 by the shaft 20.
  • the tip 40 comprises a skirt 40D intended to surround the end 20B of the shaft 20 and bear against the cam 18 closest to this end 8, thus exerting on the stack of cams 18 a force represented by the arrows F 5 and directed towards a ring 25 mounted on the shaft 20 and forming a shoulder. This force allows blocking in rotation of the cams by adhesion.
  • the end piece 40 is immobilized on the shaft 20 by means of screws 41 received in holes 40E of the end piece 40 and in threads 20E of the shaft 20.
  • screws 41 received in holes 40E of the end piece 40 and in threads 20E of the shaft 20.
  • the sleeve 50 is immobilized on the side 16D of the frame 16 by means of four screws 51, two of which are visible at the figure 2 and which penetrate into threads located radially outside the orifice 16B.
  • This sleeve 50 comprises a bearing flange 50A on the outer face of the side 16D and extends in the direction of the rib 16C surrounding the end piece 40 and the end 20B of the shaft 20.
  • a series of rollers 60 is interposed between the outer radial surface 40F of the tip 40 and the inner radial surface 50F of the sleeve 50, which allows to create a support bearing end 20D.
  • Tabs 50G immobilized on the sleeve 50 by screws 50J make it possible to hold the rollers 60 in position.
  • a 50K plug is removably mounted in the central opening of the sleeve 50 and makes it possible to mask the tip 40 and the screws 41.
  • the elements 40 to 60 extend the shaft 20, so that its end is supported by the side 16D at the port 16B.
  • bearing formed by the rollers 60 is not necessarily arranged at the level of the skirt 40D of the end piece 40 and could be arranged in any place along the length of the endpiece 40.
  • the tip 40 extending the shaft 20 extends to the inside of the bore 16B where it is received with the interposition of a bearing formed of rollers 60.
  • Screws 41 enable the end piece 40 to be secured to the end 20B of the shaft 20, this end being associated with a washer 70 for exerting on the cams 18 an axial force F 5 of rotationally fastening by adhesion.
  • a 50K plug is used to isolate the tip 40 and the screws 41 from the outside.
  • a space E is also provided through which the cams 18 can be put in place and removed as needed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Woven Fabrics (AREA)
  • Braking Systems And Boosters (AREA)
  • Air Bags (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The mechanism (10) comprises several cams (18) which are mounted on a common drive shaft (20) and provided with roller tracks (18A, 18B) for cam followers that are mounted on oscillating levers, wherein the drive shaft is supported with the aid of two openings (16A, 16B) which are made in the two single-pieced parts (16C, 16D) of the frame (16) of the mechanism (10) and whereby the shaft runs through one thereof (16A). The shaft (20) extends from the first opening (16A) in the direction of the second opening (16B) along a length (L20) which is less than the distance (D16) between said openings (16A, 16B),and detachable means (40, 50), which form an extension piece and a support, join the end (20B) of the shaft (20) located between the openings (16A, 16B) to the second opening (16B) and the difference (lE) between the distance (D16) between the openings (16A, 16B) and the length (L20) along which the shaft (20) extends between the openings is greater than the width (l18) of a cam (18).

Description

L'invention a trait à une mécanique d'armure à cames pour métier à tisser ainsi qu'à un métier à tisser équipé d'une telle mécanique et à un procédé d'assemblage d'une telle mécanique.The invention relates to a cam armor mechanism for a loom as well as to a loom equipped with such a mechanism and to a method for assembling 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 la fabrication initiale de la mécanique ou lors de la modification de l'armure, les cames, qui sont en général en nombre compris entre quatre et douze, doivent être montées sur leur arbre d'entraînement. Ce montage doit être effectué avec une grande précision afin d'éviter ou de limiter dans une très large mesure les jeux entre les pistes conjuguées des cames et les galets suiveurs. Une telle mécanique d'armure à cames est connue de FR 860 225 A .In the field of looms, there are known cam armor mechanics 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 hitched 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 the initial manufacture of the mechanics or during the modification of the armor, the cams, which are generally in number between four and twelve, must be mounted on their drive shaft. This assembly must be carried out with great precision in order to avoid or to limit to a very large extent the clearances between the conjugate tracks of the cams and the follower rollers. Such a mechanism of cam armor is known from FR 860 225 A .

Dans certaines mécaniques connues, le bâti de la mécanique définit deux demi paliers sur lesquels sont rapportés des colliers ou brides formant l'autre moitié des paliers après que l'arbre commun équipé des cames ait été mis en place sur les demi paliers formés par le bâti. Cette technique induit des imprécisions dans le positionnement de l'arbre par rapport au bâti, de sorte que la valeur de l'entraxe entre l'axe de l'arbre des cames et l'axe d'articulation des leviers oscillants ne peut pas être garantie avec prévision, de même que le parallélisme de ces axes.In certain known mechanics, the frame of the mechanism defines two half-bearings on which are reported clamps or flanges forming the other half of the bearings after the common shaft equipped with the cams has been put in place on the half-bearings formed by the frame. This technique induces inaccuracies in the positioning of the shaft relative to the frame, so that the value of the distance between the axis of the camshaft and the axis of articulation of the oscillating levers can not be guaranteed with prediction, as well as the parallelism of these axes.

Pour obtenir un bon positionnement des axes géométriques principaux de la mécanique, il est connu d'utiliser des bâtis dans lesquels sont définis deux orifices de support de l'arbre commun des cames, avec interposition de paliers. Dans ce cas, il est connu de monter les différentes cames sur un fourreau ou « canon », à l'extérieur de la mécanique puis de disposer le canon équipé des cames bloquées en rotation et indexées angulairement entre les deux parties du bâti dans lesquelles sont définis les orifices monobloc, puis d'introduire l'arbre d'entraînement à travers l'un de ces orifices, à travers le fourreau puis à travers le second orifice. Cette technique nécessite la manipulation de pièces lourdes et encombrantes lors de la mise en place du canon dans le bâti de la mécanique. Le montage des cames sur le canon doit avoir lieu à l'extérieur de la machine, sur un établi, ce qui nécessite des moyens de transport et engendre une perte de temps.To obtain a good positioning of the main geometric axes of the mechanics, it is known to use frames in which are defined two support orifices of the common camshaft, with the interposition of bearings. In this case, it is known to mount the various cams on a sheath or "barrel", outside the mechanical and then dispose the barrel equipped cams locked in rotation and indexed angularly between the two parts of the frame in which are define the one-piece orifices, then introduce the drive shaft through one of these orifices, through the sheath and through the second orifice. This technique requires the handling of heavy and bulky parts during the installation of the barrel in the frame of the mechanics. The mounting of the cams on the barrel must take place outside the machine, on a workbench, which requires means of transport and generates a waste of time.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant une mécanique d'armure dans laquelle le montage et le démontage des cames peuvent être réalisés sur la machine elle même, sans perte de temps, sans faire appel à des outillages spécifiques et sans nuire à la précision du positionnement de leur arbre commun d'entraînement par rapport au bâti de la mécanique et aux leviers oscillants coopérants avec ces cames.It is these drawbacks that the invention intends to remedy more particularly by proposing an armor mechanism in which the mounting and disassembly of the cams can be carried out on the machine itself, without loss of time, without resorting to specific tools and without affecting the accuracy of the positioning of their common drive shaft relative to the frame of the mechanical and oscillating levers cooperating with these cams.

Dans cet esprit, l'invention concerne une mécanique d'armure à cames pour métier à tisser, cette mécanique comprenant plusieurs cames montées sur un arbre d'entraînement commun et pourvue de pistes de roulement de galets suiveurs eux-mêmes montés sur des leviers oscillants, cet arbre d'entraînement étant supporté au moyen de deux orifices ménagés dans deux parties monobloc du bâti de la mécanique et dont l'un est traversé par cet arbre. Cette mécanique est caractérisée en ce que l'arbre précité s'étend, à partir du premier orifice et en direction du second orifice, sur une longueur inférieure à la distance entre ces orifices, alors que des moyens amovibles formant prolongateur et support relient l'extrémité de cet arbre située entre ces orifices au second orifice et alors que la différence entre la distance entre les orifices et la longueur sur laquelle s'étend l'arbre entre ces orifices est supérieure à la largeur d'une came.In this spirit, the invention relates to a weave mechanism for weaving looms, this mechanism comprising several cams mounted on a common drive shaft and provided with tracks of follower rollers themselves mounted on oscillating levers. , this drive shaft being supported by means of two orifices formed in two monobloc parts of the frame of mechanics and one of which is crossed by this tree. This mechanism is characterized in that the aforementioned shaft extends, from the first orifice and towards the second orifice, over a length less than the distance between these orifices, while removable means forming an extension and support connect the end of the shaft located between these orifices at the second port and while the difference between the distance between the orifices and the length on which the shaft extends between these orifices is greater than the width of a cam.

Grâce à l'invention, un espace est créé entre l'extrémité de l'arbre et la partie du bâti dans laquelle est ménagé le second orifice, ce qui permet d'utiliser cet espace, avant mise en place des moyens formant prolongateurs ou après retrait de ceux-ci, pour mettre en place les cames sur l'arbre déjà installé dans le bâti. Les cames sont mises en place individuellement sur leur arbre d'entraînement, de sorte qu'il n'est pas nécessaire d'utiliser un canon, chaque came ayant une masse et un encombrement compatible avec une manipulation aisée.Thanks to the invention, a space is created between the end of the shaft and the part of the frame in which is formed the second orifice, which allows to use this space, before setting up the means forming extensions or after removal of these, to set up the cams on the tree already installed in the frame. The cams are placed individually on their drive shaft, so that it is not necessary to use a barrel, each cam having a mass and a size compatible with easy handling.

Selon des aspects avantageux mais non obligatoires, une mécanique d'armure peut incorporer une ou plusieurs des caractéristiques suivantes prises dans toutes combinaisons techniquement admissibles :

  • Les moyens formant prolongateur et support portent ou forment un palier de support de l'extrémité de l'arbre situé entre les deux orifices
  • Les moyens formant prolongateur et support comprennent un embout apte à être rapporté sur l'extrémité de l'arbre et à exercer sur les cames montées sur cet arbre un effort axial de blocage en rotation des cames par adhérence. Cet embout est avantageusement solidaire en rotation de l'extrémité de l'arbre. Il peut s'étendre axialement jusqu'au niveau du second orifice du bâti dans lequel il inséré, avec interposition d'un palier.
  • Les moyens formant prolongateur et support comprennent un manchon monté de façon amovible dans le second orifice et qui s'étend en direction de l'extrémité de l'arbre. Ce manchon s'étend avantageusement jusqu'au niveau de cette extrémité qu'il entoure, avec interposition d'un palier. Lorsqu'un embout est prévu, le manchon peut s'étendre axialement jusqu'au niveau de cet embout, avec interposition d'un palier.
According to advantageous but not mandatory aspects, a weave mechanism may incorporate one or more of the following features taken in any technically permissible combination:
  • The means forming an extension and support bear or form a support bearing of the end of the shaft located between the two orifices
  • The means forming an extension and support comprise a tip adapted to be attached to the end of the shaft and to exert on the cams mounted on this shaft an axial force for locking in rotation of the cams by adhesion. This end piece is advantageously integral in rotation with the end of the tree. It can extend axially to the level of the second hole of the frame in which it inserted, with the interposition of a bearing.
  • The extension and support means comprise a sleeve removably mounted in the second port and extending toward the end of the shaft. This sleeve advantageously extends to the level of this end that it surrounds, with the interposition of a bearing. When a tip is provided, the sleeve can extend axially to the level of this tip, with the interposition of a bearing.

L'invention concerne également un métier à tisser équipé d'une mécanique d'armure telle que précédemment décrite. Un tel métier est plus économique, plus facile à configurer et plus fiable que les métiers connus.The invention also relates to a loom equipped with a weave mechanism as previously described. Such a business is more economical, easier to configure and more reliable than known trades.

L'invention concerne également un procédé d'assemblage d'une mécanique d'armure telle que précédemment décrite et, plus spécifiquement, un procédé qui comprend des étapes consistant à :

  • mettre en place l'arbre commun d'entraînement des cames dans le bâti de la mécanique ;
  • déplacer au moins une came, selon une direction globalement perpendiculaire à un axe Longitudinal de l'arbre et dans un volume défini entre l'extrémité libre de cet arbre et une partie monobloc du bâti, jusqu'à aligner sensiblement un alésage central de cette came avec cet arbre ;
  • déplacer alors cette came selon une direction globalement parallèle à l'axe longitudinal de l'arbre et dans un sens dirigé à l'opposé de la partie précitée du bâti, jusqu'à entourer l'arbre avec cette came et
  • installer de façon amovible des moyens formant prolongateur et support et reliant cette extrémité à un orifice ménagé dans la partie précitée du bâti.
The invention also relates to a method of assembling a weave mechanism as previously described and, more specifically, to a method which comprises the steps of:
  • set up the common drive shaft of the cams in the frame of the mechanics;
  • moving at least one cam, in a direction generally perpendicular to a longitudinal axis of the shaft and in a volume defined between the free end of this shaft and a one-piece portion of the frame, to substantially align a central bore of this cam with this tree;
  • then move this cam in a direction generally parallel to the longitudinal axis of the shaft and in a direction directed away from the aforesaid part of the frame, to surround the shaft with this cam and
  • removably install means forming an extension and support and connecting this end to a hole in the aforementioned part of the frame.

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 deux modes de réalisation d'une mécanique d'armure, d'un métier à tisser et d'un procédé conformes à son principe, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés dans lesquels :

  • la figure 1 est une représentation schématique partielle de principe d'un métier à tisser conforme à l'invention, une partie de la mécanique étant arrachée pour la clarté du dessin ;
  • la figure 2 est une coupe à plus grande échelle selon la ligne II-II à la figure 1 ;
  • la figure 3 est une coupe analogue à la figure 2, alors que la mécanique est en cours d'assemblage et
  • la figure 4 est une représentation schématique de principe, en coupe partielle dans un plan analogue à celui de la figure 2, d'une mécanique conforme à un second 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 two embodiments of a weave mechanism, a loom and a method according to its principle, given solely by way of example and with reference to the accompanying drawings, in which:
  • the figure 1 is a partial schematic representation of principle of a loom according to the invention, a part of the mechanism being torn off for the sake of clarity of the drawing;
  • the figure 2 is a larger-scale section along the line II-II to the figure 1 ;
  • the figure 3 is a cut similar to the figure 2 , while the mechanics is being assembled and
  • the figure 4 is a schematic representation of the principle, in partial section in a plane similar to that of the figure 2 , a mechanical according to a second embodiment of the invention.

Le métier à tisser M représenté à la figure 1 comprend plusieurs cadres de lisses dont un seul est visible sur cette figure 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 et reliés entre eux et aux cadres par des bielles 14.The loom M represented at figure 1 comprises several heald frames, only one of which is visible in this figure with the reference 1. The various frames of the trade M are driven by a vertical oscillations movement represented by the double arrow F 1 and printed by a cam mechanism 10 of which the output levers 11 respectively attack connecting rods 12 associated with bent levers 13 and connected to each other and to the frames by connecting rods 14.

Les leviers 11 sont prévus en nombre équivalent au nombre de cadres de lisses 1 et montés pivotants, comme représenté par la double flèche F2, autour de l'axe longitudinal X15 d'un arbre commun 15 soutenu par Le bâti 16 de la mécanique 10. La mécanique 10 comprend également plusieurs cames complémentaires 18 définissant chacune deux pistes 18A et 18B sur lesquelles viennent respectivement en appui des galets 19A et 19B portés par les leviers 11.The levers 11 are provided in number equivalent to the number of heald frames 1 and pivotally mounted, as represented by the double arrow F 2 , around the axis longitudinal axis X 15 of a common shaft 15 supported by the frame 16 of the mechanism 10. The mechanism 10 also comprises a plurality of complementary cams 18 each defining two tracks 18A and 18B on which are respectively supported rollers 19A and 19B carried by the levers 11.

Les cames 18 sont montées sur un arbre commun 20 qui est supporté par le bâti 16 et dont une première extrémité 20A porte une roue 21 à denture conique destinée à coopérer avec un pignon 22 à denture conique et formant un réducteur permettant l'entraînement de l'arbre 20 autour de son axe longitudinal X20.The cams 18 are mounted on a common shaft 20 which is supported by the frame 16 and of which a first end 20A carries a wheel 21 with conical teeth intended to cooperate with a pinion 22 with conical teeth and forming a gearbox for driving the wheel. shaft 20 about its longitudinal axis X 20 .

Pour supporter l'arbre 20 et les cames 18, le bâti 16 est percé de deux orifices 16A et 16B à section circulaire et dont les axes centraux respectifs sont globalement alignés entre eux et avec l'axe X20 lorsque l'arbre 20 est en place dans le bâti 16. Les orifices 16A et 16B sont respectivement formés dans une nervure intermédiaire 16C et dans un côté 16D du bâti 16 qui sont monoblocs.To support the shaft 20 and the cams 18, the frame 16 is pierced with two holes 16A and 16B with a circular section and whose respective central axes are generally aligned with each other and with the X axis 20 when the shaft 20 is in position. The holes 16A and 16B are respectively formed in an intermediate rib 16C and in a side 16D of the frame 16 which are monobloc.

Un palier 23 est disposé dans l'orifice 16A et permet de supporter l'arbre 20 qui s'étend de part et d'autre de la nervure 16C. A partir de l'orifice 16A, l'arbre 20 s'étend en direction de l'orifice 16B sur une longueur L20 qui est strictement inférieure à la distance D16 entre les orifices 16A et 16B, c'est-à-dire la distance entre les faces en regard des parties 16C et 16D du bâti 16. Il est ainsi créé un espace E représenté en grisé à la figure 3 de largeur lE égale à la différence de la distance D16 et de la longueur L20.A bearing 23 is disposed in the orifice 16A and can support the shaft 20 which extends on either side of the rib 16C. From the orifice 16A, the shaft 20 extends towards the orifice 16B over a length L 20 which is strictly smaller than the distance D 16 between the orifices 16A and 16B, that is to say the distance between the facing faces 16C and 16D portions of the frame 16. It is thus created a space E shown in gray on the figure 3 of width l E equal to the difference of the distance D 16 and the length L 20 .

L'espace E peut être utilisé pour mettre en place les cames 18 sur l'arbre 20 dans la mesure où la largeur lE est supérieur à la largeur l18 des cames 18. En effet, comme représenté à la figure 3, une came 18 peut être insérée dans l'espace E dans le sens de la flèche F3, c'est-à-dire selon une direction globalement perpendiculaire à l'axe X20, cette came 18 étant insérée entre le côté 16D du bâti 16 et l'extrémité libre 20B de l'arbre 20. Lorsque l'alésage central 18C de la came 18 est globalement aligné avec l'axe X20, il est possible de déplacer cette came dans le sens de la flèche F4 à la figure 3, c'est-à-dire en direction de la nervure 16C, pour que cette came vienne entourer l'extrémité 20B de l'arbre 20. On peut alors orienter angulairement la came 20 pour aligner un perçage axial de celle-ci prévu à cet effet avec une tige d'indexation angulaire 24 précédemment mise en place dans les orifices correspondants alignés des cames déjà installées sur l'arbre 20.The space E can be used to place the cams 18 on the shaft 20 to the extent that the width E is greater than the width 18 of the cams 18. Indeed, as shown in FIG. figure 3 a cam 18 can be inserted in the space E in the direction of the arrow F 3 , that is to say in a direction generally perpendicular to the axis X 20 , this cam 18 being inserted between the side 16D of the frame 16 and the free end 20B of the shaft 20. When the central bore 18C of the cam 18 is generally aligned with the axis X 20 , it is possible to move this cam in the direction of the arrow F 4 to the figure 3 , that is to say in the direction of the rib 16C, for this cam to surround the end 20B of the shaft 20. It can then angularly orientate the cam 20 to align an axial bore thereof provided for this effect with an angular indexing rod 24 previously placed in the corresponding aligned holes of the cams already installed on the shaft 20.

Lorsque toutes les cames prévues pour la mécanique 10 ont été installées sur l'arbre 20 comme indiqué ci-dessus, on relie l'extrémité 20B de l'arbre 20 au côté 16D du bâti 16 au moyen d'un embout 40 et d'un manchon 50 solidarisés respectivement avec l'arbre 20 et avec le côté 16D. L'embout 40 est destiné à prolonger l'arbre 20 en direction de l'orifice 16B et il est pourvu d'une rainure 40C destinée à coopérer avec un tenon 20C prévu sur l'extrémité 20B de l'arbre 20, ce qui permet de solidariser en rotation les éléments 20 et 40 et de sécuriser ainsi l'entraînement angulaire de l'embout 40 par l'arbre 20.When all the cams provided for the mechanism 10 have been installed on the shaft 20 as indicated above, the end 20B of the shaft 20 is connected to the side 16D of the frame 16 by means of an end piece 40 and a sleeve 50 secured respectively with the shaft 20 and with the side 16D. The tip 40 is intended to extend the shaft 20 in the direction of the orifice 16B and it is provided with a groove 40C intended to cooperate with a tenon 20C provided on the end 20B of the shaft 20, which allows to immobilize in rotation the elements 20 and 40 and thus secure the angular drive of the end piece 40 by the shaft 20.

L'embout 40 comprend une jupe 40D destinée à entourer l'extrémité 20B de l'arbre 20 et à venir en appui sur la came 18 la plus proche de cette extrémité 8 en exerçant ainsi sur l'empilement de cames 18 un effort représenté par les flèches F5 et dirigé vers une bague 25 montée sur l'arbre 20 et formant un épaulement. Cet effort permet un blocage en rotation des cames par adhérence.The tip 40 comprises a skirt 40D intended to surround the end 20B of the shaft 20 and bear against the cam 18 closest to this end 8, thus exerting on the stack of cams 18 a force represented by the arrows F 5 and directed towards a ring 25 mounted on the shaft 20 and forming a shoulder. This force allows blocking in rotation of the cams by adhesion.

L'embout 40 est immobilisé sur l'arbre 20 au moyen de vis 41 reçues dans des perçages 40E de l'embout 40 et dans des taraudages 20E de l'arbre 20. Ainsi, par le serrage des vis 41, on exerce l'effort F5 qui permet de solidariser en rotation, par adhérence, les cames 18 à l'arbre 20.The end piece 40 is immobilized on the shaft 20 by means of screws 41 received in holes 40E of the end piece 40 and in threads 20E of the shaft 20. Thus, by tightening the screw 41, the force F 5 is exerted which makes it possible to join the cams 18 to the shaft 20 by rotationally adhering them together.

Le manchon 50 est immobilisé sur le côté 16D du bâti 16 au moyen de quatre vis 51 dont deux sont visibles à la figure 2 et qui pénétrent dans des taraudages situés radialement à l'extérieur de l'orifice 16B. Ce manchon 50 comprend un rebord 50A d'appui sur la face externe du côté 16D et se prolonge en direction de la nervure 16C en venant entourer l'embout 40 et l'extrémité 20B de l'arbre 20. Une série de rouleaux 60 est interposée entre la surface radiale externe 40F de l'embout 40 et la surface radiale interne 50F du manchon 50, ce qui permet de créer un palier de support de l'extrémité 20D. Des pattes 50G immobilisées sur le manchon 50 par des vis 50J permettent de maintenir en position les rouleaux 60.The sleeve 50 is immobilized on the side 16D of the frame 16 by means of four screws 51, two of which are visible at the figure 2 and which penetrate into threads located radially outside the orifice 16B. This sleeve 50 comprises a bearing flange 50A on the outer face of the side 16D and extends in the direction of the rib 16C surrounding the end piece 40 and the end 20B of the shaft 20. A series of rollers 60 is interposed between the outer radial surface 40F of the tip 40 and the inner radial surface 50F of the sleeve 50, which allows to create a support bearing end 20D. Tabs 50G immobilized on the sleeve 50 by screws 50J make it possible to hold the rollers 60 in position.

Un bouchon 50K est monté de façon amovible dans l'ouverture centrale du manchon 50 et permet de masquer l'embout 40 et les vis 41.A 50K plug is removably mounted in the central opening of the sleeve 50 and makes it possible to mask the tip 40 and the screws 41.

Ainsi, les éléments 40 à 60 permettent de prolonger l'arbre 20, de telle sorte que son extrémité est supportée par le côté 16D au niveau de l'orifice 16B.Thus, the elements 40 to 60 extend the shaft 20, so that its end is supported by the side 16D at the port 16B.

On comprend que le palier formé des rouleaux 60 n'est pas nécessairement disposé au niveau de la jupe 40D de l'embout 40 et pourrait être ménagé dans n'importe quel endroit de la longueur de l'embout 40.It is understood that the bearing formed by the rollers 60 is not necessarily arranged at the level of the skirt 40D of the end piece 40 and could be arranged in any place along the length of the endpiece 40.

Lorsqu'il convient de démonter la mécanique à cames, notamment pour procéder à l'échange de certaines cames, il suffit de retirer le bouchon 50K, puis de desserrer les vis 51 et 41 pour retirer les éléments 40 et 50 afin de ménager à nouveau l'espace E par lequel les cames 18 peuvent être retirées selon un mouvement inverse à celui décrit ci-dessus, puis de nouvelles cames peuvent être mises en place.When disassembling the cam mechanism, in particular to exchange some cams, simply remove the cap 50K, then loosen the screws 51 and 41 to remove the elements 40 and 50 to spare again the space E by which the cams 18 can be removed in a reverse movement to that described above, and new cams can be implemented.

Dans le second mode de réalisation de l'invention représenté à la figure 4, l'embout 40 prolongeant l'arbre 20 s'étend jusqu'à l'intérieur de l'alésage 16B où il est reçu avec interposition d'un palier formé de rouleaux 60. Des vis 41 permettent de solidariser l'embout 40 à l'extrémité 20B de l'arbre 20, cet embout étant associé à une rondelle 70 permettant d'exercer sur les cames 18 un effort axial F5 de solidarisation en rotation par adhérence.In the second embodiment of the invention shown in figure 4 , the tip 40 extending the shaft 20 extends to the inside of the bore 16B where it is received with the interposition of a bearing formed of rollers 60. Screws 41 enable the end piece 40 to be secured to the end 20B of the shaft 20, this end being associated with a washer 70 for exerting on the cams 18 an axial force F 5 of rotationally fastening by adhesion.

Un bouchon 50K permet d'isoler l'embout 40 et les vis 41 de l'extérieur.A 50K plug is used to isolate the tip 40 and the screws 41 from the outside.

Dans le deuxième mode de réalisation, un espace E est également ménagé grâce auquel les cames 18 peuvent être mises en place et retirées en fonction des besoins.In the second embodiment, a space E is also provided through which the cams 18 can be put in place and removed as needed.

Les caractéristiques des différents modes de réalisation décrits peuvent être combinées dans le cadre de la présente invention.The characteristics of the various embodiments described can be combined in the context of the present invention.

Claims (10)

  1. Cam shedding mechanism for a weaving machine, the said mechanism comprising a plurality of cams which are mounted on a common drive shaft and provided with rolling tracks for follower rollers which are themselves mounted on oscillating levers, the said drive shaft being supported by means of two openings which are made in two monobloc parts of the frame of the mechanism and through one of which the said shaft passes, characterised in that the said shaft (20) extends, from the said first opening (16A) and in the direction of the second opening (16B), over a length (L20) which is less than the distance (D16) between the said openings, while detachable means (40, 50) which form an extension piece and a support connect the end (20B) of the said shaft located between the said openings to the second opening and the difference (lE) between the distance (D16) between the said openings and the length (L20) over which the said shaft extends between the said openings is greater than the width (l18) of a cam (18).
  2. Mechanism according to Claim 1, characterised in that the said means (40, 50) which form an extension piece and a support carry or form a bearing (60) for supporting the said end (20B) of the said shaft (20).
  3. Mechanism according to one of the preceding claims, characterised in that the said means (40, 50) which form an extension piece and a support comprise an end piece (40) capable of being mounted on the said end (20B) of the said shaft (20) and of exerting on the cams (18) mounted on the said shaft an axial force (F5) for rotationally locking the said cams by adherence.
  4. Mechanism according to Claim 3, characterised in that the said end piece (40) is rotationally fixed to the said end (20B) of the said shaft (20).
  5. Mechanism according to one of Claims 3 or 4, characterised in that the said end piece (40) extends axially as far as the level of the said second opening (16B), into which it is inserted with interposition of a bearing (60).
  6. Mechanism according to one of Claims 1 or 4, characterised in that the said means (40, 50) which form an extension piece and a support comprise a sleeve (50) mounted detachably in the said second opening (16B) and extending in the direction of the said end (20B) of the said shaft (20).
  7. Mechanism according to Claim 6, characterised in that the said sleeve (50) extends axially as far as the level of the said end (20B) of the said shaft (20), which it surrounds with interposition of a bearing (60).
  8. Mechanism according to one of Claims 3 or 4 and 6, characterised in that the said sleeve (50) extends axially as far as the level of the said end piece (40), which it surrounds with interposition of a bearing (60).
  9. Weaving machine (M) fitted with a shedding mechanism (10) according to one of the preceding claims.
  10. Method for assembling a cam shedding mechanism for a weaving machine, in which mechanism the said cams are mounted on a common drive shaft and provided with rolling tracks for follower rollers which are themselves mounted on oscillating levers, characterised in that it comprises steps consisting in:
    - putting in place the said drive shaft (20) in the frame (16) of the mechanism (10);
    - moving (F3) at least one cam (18), along a direction generally perpendicular to a longitudinal axis (X20-X'20) of the said shaft and in a volume (E) defined between a free end (20B) of the said shaft and a monobloc part (16D) of the said frame, until a central hole (18C) of the said cam is substantially aligned with the said shaft;
    - moving the said cam (F4), along a direction generally parallel to the said longitudinal axis of the said shaft and in a direction opposite the said part of the said frame, until the said shaft is surrounded by the said cam and
    - detachably installing means (40, 50) which form an extension piece and a support and connect the said end (20B) to an opening (16B) made in the said part of the said frame.
EP05744238A 2004-03-29 2005-03-25 Cam harness mounting mechanism, weaving machine fitted therewith, method for assembling said mechanism Active EP1794358B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0403217A FR2868088B1 (en) 2004-03-29 2004-03-29 CAM ARMOR MECHANISM, WOVEN WEAVING EQUIPPED WITH SUCH A MECHANICAL AND METHOD FOR ASSEMBLING SUCH A MECHANICAL
PCT/FR2005/000730 WO2005098108A1 (en) 2004-03-29 2005-03-25 Cam harness mounting mechanism, weaving machine fitted therewith, method for assembling said mechanism

Publications (2)

Publication Number Publication Date
EP1794358A1 EP1794358A1 (en) 2007-06-13
EP1794358B1 true EP1794358B1 (en) 2008-12-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05744238A Active EP1794358B1 (en) 2004-03-29 2005-03-25 Cam harness mounting mechanism, weaving machine fitted therewith, method for assembling said mechanism

Country Status (8)

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EP (1) EP1794358B1 (en)
JP (1) JP4971976B2 (en)
KR (1) KR101245224B1 (en)
CN (1) CN1934301B (en)
AT (1) ATE417147T1 (en)
DE (1) DE602005011647D1 (en)
FR (1) FR2868088B1 (en)
WO (1) WO2005098108A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2322702A1 (en) 2009-11-13 2011-05-18 Groz-Beckert KG Shedding machine and method for assembly and disassembly of cam discs

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502006006342D1 (en) 2006-10-06 2010-04-15 Groz Beckert Kg Shaft gear for a weaving machine
JP5410814B2 (en) * 2009-04-02 2014-02-05 津田駒工業株式会社 Drive mechanism for weaving related equipment in looms

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
FR860225A (en) * 1938-09-14 1941-01-09 K C Engineering Company Ltd Cam mechanism for reciprocating motion
US2637348A (en) * 1951-08-02 1953-05-05 Draper Corp Harness cam and treadle means for looms
CH484305A (en) * 1968-03-06 1970-01-15 Brevitex Ets Device for controlling the opening of the shed in a frame for the production of ribbon fabrics
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
JP3167943B2 (en) * 1996-09-26 2001-05-21 津田駒工業株式会社 Cam opening device with positioning function
CN2483403Y (en) * 2001-05-10 2002-03-27 高邮市新型纺机有限公司 Active type can opening device for water spraying weaving machine
DE10233017B4 (en) * 2002-07-20 2004-09-30 Dürkopp Adler AG Eye buttonhole sewing machine
CN2592670Y (en) * 2002-12-17 2003-12-17 承巍 Heddle frame lifting mechanism for high-speed shuttleless webbing loom
KR20040005730A (en) * 2003-12-02 2004-01-16 박군시 a high-speed chain sewing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2322702A1 (en) 2009-11-13 2011-05-18 Groz-Beckert KG Shedding machine and method for assembly and disassembly of cam discs

Also Published As

Publication number Publication date
CN1934301A (en) 2007-03-21
JP2007530816A (en) 2007-11-01
CN1934301B (en) 2010-06-09
FR2868088B1 (en) 2006-05-26
FR2868088A1 (en) 2005-09-30
KR101245224B1 (en) 2013-03-19
ATE417147T1 (en) 2008-12-15
DE602005011647D1 (en) 2009-01-22
WO2005098108A1 (en) 2005-10-20
JP4971976B2 (en) 2012-07-11
EP1794358A1 (en) 2007-06-13
KR20060132959A (en) 2006-12-22

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