EP0580528A1 - Levelling device for cam operated shedding mechanisms on looms - Google Patents

Levelling device for cam operated shedding mechanisms on looms Download PDF

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Publication number
EP0580528A1
EP0580528A1 EP93420299A EP93420299A EP0580528A1 EP 0580528 A1 EP0580528 A1 EP 0580528A1 EP 93420299 A EP93420299 A EP 93420299A EP 93420299 A EP93420299 A EP 93420299A EP 0580528 A1 EP0580528 A1 EP 0580528A1
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EP
European Patent Office
Prior art keywords
axis
frame
arms
pivot axis
eccentrics
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Granted
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EP93420299A
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German (de)
French (fr)
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EP0580528B1 (en
Inventor
Jean-Paul Froment
Jean-Pierre Pages
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Staubli Faverges SCA
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Staubli Faverges SCA
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Priority claimed from FR929208898A external-priority patent/FR2693482B1/en
Priority claimed from FR9211358A external-priority patent/FR2695945B1/en
Application filed by Staubli Faverges SCA filed Critical Staubli Faverges SCA
Publication of EP0580528A1 publication Critical patent/EP0580528A1/en
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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
    • D03C5/005—Leveling mechanisms
    • 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
    • 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 present invention relates to cam mechanics used for the formation of shed on weaving machines.
  • the reference 1 designates one of the oscillating levers coupled to one of the heald frames CL of the weaving machine, while the reference 2 corresponds to the two rollers which are offset laterally with respect to each other to cooperate with the two tracks of a complementary cam 3, wedged on a drive shaft 4.
  • the various oscillating levers 1 of the mechanical under consideration are mounted idly on a common axis 5 oriented parallel to the shaft 4 and one observe that each of the ends 5 a with a small diameter of this axis 5 is supported by an eccentric 6 with a circular profile, housed in the cylindrical bore of a bearing 7 secured to the frame of the mechanics.
  • the present invention is based on the observation that fitting of the ends 5a of the shaft 5 within the eccentric 6 and the maintenance thereof in the bearings 7 impair the rigidity of attachment of said axis so that during normal operation (weaving) of the mechanics, this axis is subjected to very high forces and to significant vibratory effects. These forces and vibrations cause rapid wear of the parts which support the pivot axis, causing the formation of rust in the bearings 7, as well as the appearance of residual play detrimental to the proper functioning of all of the mechanics. .
  • the invention essentially consists in causing the ends of the pivot axis to act as elastic means capable of keeping said ends very strongly pressed against fixed bearing surfaces integral with the frame.
  • fig. 1 shows schematically the structure of conventional leveling devices.
  • Fig. 2 illustrates in the same way the arrangement of a mechanism equipped with a leveling device according to the invention.
  • Fig. 3 reproduced fig. 2 at the leveling position.
  • Fig. 4 is a perspective view showing clearly the mounting of the pivot axis.
  • Fig. 5 and 6 are schematic vertical sections similar to those according to FIG. 2 and 3, but illustrating another embodiment of the invention.
  • these eccentrics are in the form of two lateral arms 10 whose upper end supports, for example by means of screws 11, the corresponding end 5 a of the axis 5, while the lower end is mounted on a pivot 12 secured to the frame 9 of the mechanics.
  • each arm 10 is coupled by a connecting rod 13 to a cylindrical eccentric 14 engaged in a bore of the frame 9 and provided with a rotary actuating means, shown diagrammatically in the form of a handle 15, suitable for move between two fixed angular limit stops indicated in 15 '.
  • the eccentrics 14 are oriented in such a way that the links 13, established at an arcuate profile so as to be susceptible to a slight elastic deformability along their axis, tend to elastically push the arms 10 in the direction of the shaft 4.
  • the system applies an elastic preload to the pivot axis 5 which tends to keep its ends applied against two bearing surfaces 9a provided for this purpose in the frame 9.
  • the axis 5 is thus perfectly immobilized and this avoids the wear caused by the vibrations imparted to this axis 5 during weaving.
  • the ends 5 a of the axis 5 are carried by eccentrics or arms 10 established at a short length, in the manner of crank pins oriented radially with respect to said axis.
  • the free end of each arm 10 is coupled to an arcuate link 13 which is linked to articulation to the frame 9 by means of a lateral pivot pin 16, located between the axis 5 and the shaft 4.
  • the ends 5 a of the axis 5 are engaged in slots 9 b formed in the frame 9, the axis of each slot 9 b being oriented substantially orthogonal to the guide direction exerted by the links 13 on the arms 10 when these pivot to pass from the weaving position according to fig. 5 at the leveling position according to fig. 6.
  • At least one lateral jack whose cylinder 17 is articulated in 9 c on the frame 9, while the movable rod 18 is coupled to an ear 10 a of the arm 10 considered .
  • the average position of the ear 10 a is perpendicular to the axis of the jack 17-18, so that actuation of the latter results in a rotation of the arms 10 and the shaft 5 resulting in the transition from a to the other of the arrangements shown in fig. 5 and 6.
  • a stop 13 ' is provided to limit the amplitude of the angular displacement of the rods 13.

Abstract

Associated with the tilting arms (10) carrying the shaft (5a), on which the set of rocker levers (1) of the mechanism pivots, are deformable operating means (13-14) which tend, during weaving, to keep the said shaft (5a) laid elastically against fixed bearing surfaces (9a) of the frame (9). This avoids the occurrence of the wear attributable to the residual play following the effect of the vibrations to which the shaft (5a) is subjected. <IMAGE>

Description

La présente invention a trait aux mécaniques à cames utilisées pour la formation de la foule sur les machines à tisser.The present invention relates to cam mechanics used for the formation of shed on weaving machines.

On sait que sous l'appellation "mécanique à cames" on désigne généralement un ensemble comprenant une série de leviers oscillants en nombre égal à celui des cadres de lisses montés sur la machine à tisser. Chaque levier oscillant, attelé à l'un des cadres précités, est pourvu de deux galets qui coopèrent avec les deux pistes profilées d'une came complémentaire entraînée en rotation par un arbre commun lié à celui de la machine à tisser correspondante. On comprend que l'entraînement de ces cames, convenablement décalées angulairement les unes par rapport aux autres sur l'arbre commun précité, assure bien la commande des leviers et le déplacement vertical alternatif des cadres de lisses.We know that under the name "mechanical cams" we generally designate an assembly comprising a series of oscillating levers in number equal to that of the heald frames mounted on the weaving machine. Each oscillating lever, coupled to one of the aforementioned frames, is provided with two rollers which cooperate with the two profiled tracks of a complementary cam driven in rotation by a common shaft linked to that of the corresponding weaving machine. It is understood that the drive of these cams, suitably angularly offset relative to each other on the aforementioned common shaft, ensures the control of the levers and the alternating vertical displacement of the heald frames.

L'expérience démontre que lors de chaque arrêt de la machine à tisser, soit en fin de travail, soit en vue d'une intervention momentanée sur ladite machine ou sur la mécanique à cames, il y avait lieu d'amener tous les cadres de lisses à la même hauteur. A cet effet, les mécaniques sont généralement dotées d'un dispositif dit "niveleur" qui peut revêtir différentes formes, mais dont la structure la plus courante est celle qui a été schématiquement représentée à la fig. 1 du dessin annexé aux présentes.Experience has shown that each time the weaving machine is stopped, either at the end of work or for a momentary intervention on said machine or on the cam mechanism, all the frames of the smooth at the same height. For this purpose, the mechanics are generally provided with a device called "leveler" which can take different forms, but the most common structure of which is that which has been schematically represented in FIG. 1 of the drawing appended hereto.

Sur cette fig. 1, la référence 1 désigne l'un des leviers oscillants attelés à l'un des cadres de lisses CL de la machine à tisser, tandis que la référence 2 correspond aux deux galets qui sont décalés latéralement l'un par rapport à l'autre pour coopérer avec les deux pistes d'une came complémentaire 3, calée sur un arbre d'entraînement 4. Les différents leviers oscillants 1 de la mécanique considérée sont montés fous sur un axe commun 5 orienté parallèlement à l'arbre 4 et l'on observera que chacune des extrémités 5a à petit diamètre de cet axe 5 est supportée par un excentrique 6 à profil circulaire, logé dans l'alésage cylindrique d'un palier 7 solidaire du bâti de la mécanique.In this fig. 1, the reference 1 designates one of the oscillating levers coupled to one of the heald frames CL of the weaving machine, while the reference 2 corresponds to the two rollers which are offset laterally with respect to each other to cooperate with the two tracks of a complementary cam 3, wedged on a drive shaft 4. The various oscillating levers 1 of the mechanical under consideration are mounted idly on a common axis 5 oriented parallel to the shaft 4 and one observe that each of the ends 5 a with a small diameter of this axis 5 is supported by an eccentric 6 with a circular profile, housed in the cylindrical bore of a bearing 7 secured to the frame of the mechanics.

On conçoit sans peine que si après arrêt de l'arbre d'entraînement 4 on fait tourner les deux excentriques 6 dans leurs paliers 7, l'axe commun 5 sur lequel pivotent tous les leviers 1 se déplace suivant la flèche qui apparait en fig. 1, ce mouvement de recul dudit axe ayant pour effet d'amener tous les leviers 1 en appui contre une butée fixe 8 du bâti 9.It is easily understood that if, after stopping the drive shaft 4, the two eccentrics 6 are rotated in their bearings 7, the common axis 5 on which all the levers 1 pivot, moves according to the arrow which appears in FIG. 1, this backward movement of said axis having the effect of bringing all the levers 1 to bear against a fixed stop 8 of the frame 9.

En conséquence, tous les leviers oscillants 1 sont amenés à la même orientation angulaire, quelle que soit, au moment de l'arrêt, l'orientation de la came complémentaire 3 qui assure l'actionnement de chacun d'eux.Consequently, all the oscillating levers 1 are brought to the same angular orientation, whatever, at the time of stopping, the orientation of the complementary cam 3 which actuates each of them.

La présente invention se fonde sur l'observation que le montage des extrémités 5a de l'axe 5 à l'intérieur des excentriques 6 et le maintien de ces derniers dans les paliers 7 nuisent à la rigidité de la fixation dudit axe alors qu'au cours du fonctionnement normal (tissage) de la mécanique, cet axe est soumis à des efforts très élevés et à des effets vibratoires importants. Ces efforts et vibrations entrainent une usure rapide des pièces qui supportent l'axe de pivotement, en engendrant la formation de rouille dans les paliers 7, ainsi que l'apparition d'un jeu résiduel préjudiciable au bon fonctionnement de l'ensemble de la mécanique.The present invention is based on the observation that fitting of the ends 5a of the shaft 5 within the eccentric 6 and the maintenance thereof in the bearings 7 impair the rigidity of attachment of said axis so that during normal operation (weaving) of the mechanics, this axis is subjected to very high forces and to significant vibratory effects. These forces and vibrations cause rapid wear of the parts which support the pivot axis, causing the formation of rust in the bearings 7, as well as the appearance of residual play detrimental to the proper functioning of all of the mechanics. .

C'est à cet inconvénient qu'entend principalement remédier la présente invention, laquelle a pour objet la mécanique à cames qui est définie à la revendication 1.It is to this drawback that the present invention mainly intends to remedy, which relates to the cam mechanism which is defined in claim 1.

En fait, l'invention consiste essentiellement à faire agir sur les extrémités de l'axe de pivotement des moyens élastiques propres à maintenir très fortement pressées lesdites extrémités contre des portées fixes solidaires du bâti.In fact, the invention essentially consists in causing the ends of the pivot axis to act as elastic means capable of keeping said ends very strongly pressed against fixed bearing surfaces integral with the frame.

Les essais ont démontré que les efforts de contact ainsi obtenus entre l'axe et ses portées, joints aux forces d'adhérence qui en découlent, s'opposaient radicalement à tous les micro-déplacements observés dans les constructions classiques.The tests demonstrated that the contact forces thus obtained between the axis and its spans, joined to the adhesion forces which result therefrom, radically opposed all the micro-displacements observed in conventional constructions.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :
   Comme indiqué plus haut, fig. 1 expose de manière schématique la structure des dispositifs niveleurs classiques.
   Fig. 2 illustre de la même manière l'agencement d'une mécanique équipée d'un dispositif niveleur conforme à l'invention.
   Fig. 3 reproduit fig. 2 à la position de nivellement.
   Fig. 4 est une vue en perspective faisant bien ressortir le montage de l'axe de pivotement.
   Fig. 5 et 6 sont des coupes verticales schématiques analogues à celles suivant fig. 2 et 3, mais illustrant un autre mode de mise en oeuvre de l'invention.The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
As indicated above, fig. 1 shows schematically the structure of conventional leveling devices.
Fig. 2 illustrates in the same way the arrangement of a mechanism equipped with a leveling device according to the invention.
Fig. 3 reproduced fig. 2 at the leveling position.
Fig. 4 is a perspective view showing clearly the mounting of the pivot axis.
Fig. 5 and 6 are schematic vertical sections similar to those according to FIG. 2 and 3, but illustrating another embodiment of the invention.

En fig. 2, on retrouve le levier oscillant 1 pourvu de ses deux galets 2 coopérant avec les pistes d'une came complémentaire 3 calée sur un arbre d'entraînement 4. Tous les leviers 1 de la mécanique pivotent autour d'un axe commun 5 au niveau duquel est agencé le dispositif niveleur, incorporant un système d'excentriques propre à amener ledit axe à une position pour laquelle les galets 2 ne sont plus au contact des cames 3.In fig. 2, we find the oscillating lever 1 provided with its two rollers 2 cooperating with the tracks of an additional cam 3 wedged on a drive shaft 4. All the levers 1 of the mechanics pivot around a common axis 5 at the level of which the leveling device is arranged, incorporating a system of eccentrics suitable for bringing said axis to a position for which the rollers 2 are no longer in contact with the cams 3.

Dans l'exemple de réalisation considéré, ces excentriques se présentent sous la forme de deux bras latéraux 10 dont l'extrémité supérieure supporte, par exemple par le moyen de vis 11, l'extrémité correspondante 5a de l'axe 5, tandis que l'extrémité inférieure est montée sur un pivot 12 solidaire du bâti 9 de la mécanique. Au voisinage de son sommet, chaque bras 10 est attelé par une biellette 13 à un excentrique cylindrique 14 engagé dans un alésage du bâti 9 et pourvu d'un moyen de manoeuvre en rotation, schématisé sous la forme d'une poignée 15, apte à se déplacer entre deux butées fixes de fin de course angulaire indiquées en 15' .In the embodiment considered, these eccentrics are in the form of two lateral arms 10 whose upper end supports, for example by means of screws 11, the corresponding end 5 a of the axis 5, while the lower end is mounted on a pivot 12 secured to the frame 9 of the mechanics. In the vicinity of its top, each arm 10 is coupled by a connecting rod 13 to a cylindrical eccentric 14 engaged in a bore of the frame 9 and provided with a rotary actuating means, shown diagrammatically in the form of a handle 15, suitable for move between two fixed angular limit stops indicated in 15 '.

A la position de tissage illustrée en fig. 2, les excentriques 14 sont orientés de manière telle dans leur palier que les biellettes 13, établies à un profil arqué de manière à être susceptibles d'une légère déformabilité élastique suivant leur axe, tendent à repousser élastiquement les bras 10 en direction de l'arbre 4. Dans ces conditions, le systéme applique à l'axe de pivotement 5 une précharge élastique qui tend à maintenir ses extrémités appliquées contre deux portées 9a prévues à cet effet dans le bâti 9. L'axe 5 se trouve ainsi parfaitement immobilisé et l'on évite de la sorte l'usure engendrée par les vibrations imparties à cet axe 5 au cours du tissage.At the weaving position illustrated in fig. 2, the eccentrics 14 are oriented in such a way that the links 13, established at an arcuate profile so as to be susceptible to a slight elastic deformability along their axis, tend to elastically push the arms 10 in the direction of the shaft 4. Under these conditions, the system applies an elastic preload to the pivot axis 5 which tends to keep its ends applied against two bearing surfaces 9a provided for this purpose in the frame 9. The axis 5 is thus perfectly immobilized and this avoids the wear caused by the vibrations imparted to this axis 5 during weaving.

La précontrainte élastique ainsi créée étend ses effets bénéfiques à l'ensemble du système de commande en évitant toute apparition de rouille au niveau des articulations. On observera par ailleurs que les deux positions suivant fig. 2 et 3 sont parfaitement stables, les deux ensembles latéraux 13-14 étant comparables à des systèmes de genouillères à dépassement de point mort par suite de la limitation de déplacement angulaire introduite par les deux butées 15'The elastic prestress thus created extends its beneficial effects to the entire control system, avoiding any appearance of rust at the joints. It will also be observed that the two positions according to FIG. 2 and 3 are perfectly stable, the two lateral assemblies 13-14 being comparable to knee joint systems with exceeding neutral point owing to the angular displacement limitation introduced by the two stops 15 ′

Bien évidemment, il suffit de manoeuvrer la poignée 15 pour opérer le nivellement de l'ensemble des leviers 1 de la mécanique. Comme illustré en fig. 3 et 4, le déplacement angulaire des deux excentriques 14 a pour effet tout d'abord de faire cesser l'arc-boutement qui s'exerce sur l'axe 5, puis de faire reculer ce dernier par rapport à l'arbre 4 jusqu'à ce que les leviers 1 viennent prendre appui contre la butée fixe 8, les galets 2 n'étant alors plus en contact avec les cames 3.Obviously, it suffices to maneuver the handle 15 to operate the leveling of all of the levers 1 of the mechanics. As illustrated in fig. 3 and 4, the angular displacement of the two eccentrics 14 has the effect first of all of putting an end to the bracing which is exerted on the axis 5, then of making the latter move back with respect to the shaft 4 until 'that the levers 1 come to bear against the fixed stop 8, the rollers 2 then no longer being in contact with the cams 3.

Il va de soi qu'on peut imaginer d'autres formes de réalisation pour les moyens qui agissent élastiquement sur l'axe de pivotement 5 lors des opérations de tissage.It goes without saying that other embodiments can be imagined for the means which act elastically on the pivot axis 5 during the weaving operations.

Dans la forme de réalisation illustrée en fig. 5 et 6, les extrémités 5a de l'axe 5 sont portées par des excentriques ou bras 10 établis à une courte longueur, à la manière de manetons orientés radialement par rapport audit axe. L'extrémité libre de chaque bras 10 est attelée à une biellette arquée 13 qui est liée à articulation au bâti 9 par l'intermédiaire d'un goujon latéral de pivotement 16, situé entre l'axe 5 et l'arbre 4. Les extrémités 5a de l'axe 5 sont engagées dans des lumières 9b pratiquées dans le bâti 9, l'axe de chaque lumière 9b étant orienté de manière substantiellement orthogonale à la direction de guidage qu'exercent les biellettes 13 sur les bras 10 lorsque ceux-ci pivotent pour passer de la position de tissage suivant fig. 5 à la position de nivelage suivant fig. 6.In the embodiment illustrated in FIG. 5 and 6, the ends 5 a of the axis 5 are carried by eccentrics or arms 10 established at a short length, in the manner of crank pins oriented radially with respect to said axis. The free end of each arm 10 is coupled to an arcuate link 13 which is linked to articulation to the frame 9 by means of a lateral pivot pin 16, located between the axis 5 and the shaft 4. The ends 5 a of the axis 5 are engaged in slots 9 b formed in the frame 9, the axis of each slot 9 b being oriented substantially orthogonal to the guide direction exerted by the links 13 on the arms 10 when these pivot to pass from the weaving position according to fig. 5 at the leveling position according to fig. 6.

Pour l'actionnement du dispositif niveleur ainsi constitué, il est prévu au moins un vérin latéral dont le cylindre 17 s'articule en 9c sur le bâti 9, tandis que la tige mobile 18 est attelée à une oreille 10a du bras 10 considéré. La position moyenne de cette oreille 10a est perpendiculaire à l'axe du vérin 17-18, si bien que l'actionnement de ce dernier se traduit par une rotation des bras 10 et de l'arbre 5 entraînant le passage de l'une à l'autre des dispositions représentées en fig. 5 et 6. Ici également une butée 13' est prévue pour limiter l'amplitude du déplacement angulaire des biellettes 13.For actuation of the leveling device thus formed, there is provided at least one lateral jack whose cylinder 17 is articulated in 9 c on the frame 9, while the movable rod 18 is coupled to an ear 10 a of the arm 10 considered . The average position of the ear 10 a is perpendicular to the axis of the jack 17-18, so that actuation of the latter results in a rotation of the arms 10 and the shaft 5 resulting in the transition from a to the other of the arrangements shown in fig. 5 and 6. Here also a stop 13 'is provided to limit the amplitude of the angular displacement of the rods 13.

Le fonctionnement du dispositif est analogue à celui exposé en référence aux fig. 2 à 4. Effectivement l'extrémité, reférencée 9a, des lumières 9b qui est tournée du côté de l'arbre 4 tient lieu des portées 9a de fig. 2 à 4. Dans ces conditions, à la position suivant fig. 5, les biellettes 13 appliquent à l'axe de pivotement 5 une précharge élastique qui s'oppose à tout déplacement intempestif dudit axe, tandis qu'à la position nivelée suivant fig. 6, l'actionnement opéré par le ou les vérin 17-18 a amené, par coulissement transversal des extrémités 5a de cet axe 5 dans les lumières 9b, l'ensemble des leviers 1 en appui contre le butée fixe 8.The operation of the device is similar to that explained with reference to FIGS. 2 to 4. Indeed, the end, referenced 9 a , of the lights 9 b which is turned towards the side of the shaft 4 takes the place of the bearing surfaces 9 a of FIG. 2 to 4. Under these conditions, in the position according to fig. 5, the links 13 apply an elastic preload to the pivot axis 5 which prevents any untimely movement of said axis, while in the leveled position according to FIG. 6, the actuator operated by the cylinder or 17-18 brought, by transverse sliding of the ends 5a of the shaft 5 in the slots 9B, all the levers 1 bears against the fixed abutment 8.

Dans ce cas également, la position d'équilibre verrouillée suivant fig. 5, c'est-à-dire après dépassement du point d'extension maximale des biellettes 13, est rendue stable par la présence des butées fixes 13' .In this case also, the locked equilibrium position according to fig. 5, that is to say after exceeding the point of maximum extension of the rods 13, is made stable by the presence of fixed stops 13 '.

Il convient d'observer que le coulissement des extrémités 5a dans les lumières 9a s'effectue suivant une trajectoire pratiquement rectiligne, évitant tout déplacement des cadres de lisses CL dans le sens de l'ouverture de la foule.It should be noted that the sliding of the ends 5a in the slots 9A is next performs a substantially rectilinear path, avoiding any displacement of the heddle frames CL in the direction of the opening of the shed.

Claims (5)

Mécanique à cames pour la formation de la foule sur les machines à tisser, du genre dans lequel les extrémités (5a) de l'axe de pivotement (5) qui supporte les leviers oscillants (1) attelés aux cadres de lisses (CL) sont portées par deux excentriques (10) qui coopèrent avec le bâti (9) de façon à ce que la rotation desdits excentriques sous l'effet de moyens de manoeuvre (14-15, 17-18) provoque, par déplacement transversal dudit axe et basculement des leviers précités qui viennent prendre appui contre une butée (8), le nivellement de l'ensemble des cadres, caractérisée en ce qu'elle comporte des moyens propres à exercer sur les extrémités (5a) de l'axe de pivotement (5) un effort qui tend à appliquer élastiquement ce dernier contre des portées fixes (9a) du bâti (9) lors du fonctionnement normal de la mécanique.Cam mechanism for crowd formation on weaving machines, of the type in which the ends (5 a ) of the pivot axis (5) which supports the oscillating levers (1) coupled to the heald frames (CL) are carried by two eccentrics (10) which cooperate with the frame (9) so that the rotation of said eccentrics under the effect of operating means (14-15, 17-18) causes, by transverse displacement of said axis and tilting of the aforementioned levers which abut against a stop (8), leveling of the assembly frames, characterized in that it comprises means suitable for exerting on the ends (5 a) of the pivot axis ( 5) a force which tends to elastically apply the latter against fixed bearing surfaces (9 a) of the frame (9) during normal operation of the mechanism. Mécanique suivant la revendication 1, caractérisée en ce que les excentriques sont constitués par deux bras-latéraux pivotants (10) qui sont manoeuvrés angulairement par des biellettes (13) établies à un profil arqué afin de se déformer élastiquement.Mechanics according to claim 1, characterized in that the eccentrics consist of two pivoting side arms (10) which are angularly actuated by rods (13) established with an arcuate profile in order to deform elastically. Mécanique suivant la revendication 2, caractérisée en ce que l'extrémité des bras (10) opposée à celle qui porte l'axe de pivotement (5) est directement articulée sur un axe fixe (12) du bâti (9), les biellettes déformables (13) étant interposées entre lesdits bras (10) et les moyens de manoeuvre (14-15).Mechanics according to claim 2, characterized in that the end of the arms (10) opposite to that which carries the pivot axis (5) is directly articulated on a fixed axis (12) of the frame (9), the deformable links (13) being interposed between said arms (10) and the operating means (14-15). Mécanique suivant la revendication 2, caractérisée en ce que les biellettes déformables (13) sont interposées entre les bras (10) et le bâti (9) tandis que les extrémités (5a) de l'axe de pivotement (5) sont engagées à coulissement transversal dans des lumières (9b) pratiquées dans le bâti (9) suivant une direction orientée perpendiculairement à la direction de guidage qu'exercent lesdites biellettes (13) sur les bras (10), de sorte que l'axe (5) se déplace suivant une trajectoire pratiquement rectiligne.Mechanics according to claim 2, characterized in that the deformable links (13) are interposed between the arms (10) and the frame (9) while the ends (5 a ) of the pivot axis (5) are engaged with transverse sliding in slots (9 b ) made in the frame (9) in a direction oriented perpendicular to the guide direction exerted by said links (13) on the arms (10), so that the axis (5) moves along an almost straight path. Mécanique suivant la revendication 2, caractérisée en ce qu'il est prévu au moins une butée (13', 15') apte à limiter l'amplitude du déplacement angulaire des biellettes (13) et assurer ainsi une position d'équilibre verrouillée après dépassement du point d'extension maximale desdites biellettes.Mechanics according to claim 2, characterized in that at least one stop (13 ', 15') is provided capable of limiting the amplitude of the angular displacement of the rods (13) and thus ensuring a locked equilibrium position after passing from the point of maximum extension of said links.
EP93420299A 1992-07-10 1993-07-09 Levelling device for cam operated shedding mechanisms on looms Expired - Lifetime EP0580528B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9208898 1992-07-10
FR929208898A FR2693482B1 (en) 1992-07-10 1992-07-10 Leveling device for mechanical cams for training the crowd on weaving machines.
FR9211358 1992-09-18
FR9211358A FR2695945B1 (en) 1992-09-18 1992-09-18 Leveling device for mechanical cams for training the crowd on weaving machines.

Publications (2)

Publication Number Publication Date
EP0580528A1 true EP0580528A1 (en) 1994-01-26
EP0580528B1 EP0580528B1 (en) 1995-03-15

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EP93420299A Expired - Lifetime EP0580528B1 (en) 1992-07-10 1993-07-09 Levelling device for cam operated shedding mechanisms on looms

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US (1) US5341850A (en)
EP (1) EP0580528B1 (en)
JP (1) JP3320841B2 (en)
KR (1) KR100260048B1 (en)
CN (1) CN1030579C (en)
DE (1) DE69300087T2 (en)
ES (1) ES2070652T3 (en)
RU (1) RU2085633C1 (en)
TW (1) TW223666B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1516947A2 (en) † 2003-09-17 2005-03-23 Groz-Beckert KG Shaft drive for weaving machines
FR2868090A1 (en) * 2004-03-29 2005-09-30 Staubli Faverges Sca DEVICE FOR LEVELING, MECHANICAL ARMOR WITH CAME INCORPORATING SUCH A DEVICE AND WEAVING FABRIC OF SUCH A MECHANICAL
WO2007096129A1 (en) * 2006-02-20 2007-08-30 Picanol N.V. Method for driving heddle frames and weaving machine
EP1944397A1 (en) * 2007-01-12 2008-07-16 Staubli Faverges Cam shedding mechanism for forming a shed on a loom, loom and method for decoupling the cams in relation to the cam followers of a cam mechanism
EP3162932A1 (en) 2015-10-29 2017-05-03 Staubli Faverges Shedding mechanism comprising a level adjustment device and weaving machine including said mechanism

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KR19980019504A (en) * 1998-03-16 1998-06-05 김기호 A planing method for double cam
KR20030066994A (en) * 2002-02-06 2003-08-14 주식회사 칩팩코리아 Multi-layer lead frame and chip size package using the same
FR2842538B1 (en) * 2002-07-16 2004-10-29 Staubli Sa Ets ROTARY RATIERE FOR WEAVING, AND WEAVING EQUIPMENT PROVIDED WITH SUCH A RAIL
FR2857987B1 (en) * 2003-07-21 2005-10-07 Staubli Sa Ets FRAME OF LISSES AND WEAVING EQUIPPED WITH AT LEAST ONE SUCH FRAMEWORK
BE1015819A3 (en) * 2003-12-16 2005-09-06 Wiele Michel Van De Nv Drive device.
FR2868088B1 (en) * 2004-03-29 2006-05-26 Staubli Faverges Sca CAM ARMOR MECHANISM, WOVEN WEAVING EQUIPPED WITH SUCH A MECHANICAL AND METHOD FOR ASSEMBLING SUCH A MECHANICAL
FR2868089B1 (en) * 2004-03-29 2006-06-09 Staubli Faverges Sca COMPLEMENTARY CAME FOR MECHANICS OF WEAVING WEAPONS AND METHOD OF MANUFACTURING THE SAME
FR2868091B1 (en) * 2004-03-29 2006-05-26 Staubli Faverges Sca FOLLOWING ROLLER LEVER FOR ARMOR MECHANICS AND METHOD FOR MANUFACTURING SAME, ARMOR MECHANISM COMPRISING SUCH LEVER AND WEAVING EQUIPPED WITH SUCH A MECHANICAL
FR2884527B1 (en) * 2005-04-15 2007-07-13 Staubli Faverges Sca ARMOR CAM MECHANICS, METHOD OF ASSEMBLING SUCH A MECHANICAL AND WEAVING COMPRISING SUCH A MECHANICAL
TW200951258A (en) * 2008-06-11 2009-12-16 Cci Tech Inc Up-and-down swing mechanism for separated-type heddle frame of fabrics sample loom
CN105648613B (en) * 2016-03-24 2017-12-12 江苏瑞德机械有限公司 A kind of frame shedding motion

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1516947B2 (en) † 2003-09-17 2012-08-29 Groz-Beckert KG Shaft drive for weaving machines
EP1516947A2 (en) † 2003-09-17 2005-03-23 Groz-Beckert KG Shaft drive for weaving machines
CN1938462B (en) * 2004-03-29 2010-09-08 施托布利法韦日公司 Level adjustment device, cam harness mounting mechanism incorporating said device and weaving machine fitted with said mechanism
FR2868090A1 (en) * 2004-03-29 2005-09-30 Staubli Faverges Sca DEVICE FOR LEVELING, MECHANICAL ARMOR WITH CAME INCORPORATING SUCH A DEVICE AND WEAVING FABRIC OF SUCH A MECHANICAL
WO2005098107A1 (en) * 2004-03-29 2005-10-20 Staubli Faverges Level adjustment device, cam harness mounting mechanism incorporating said device and weaving machine fitted with said mechanism
WO2007096129A1 (en) * 2006-02-20 2007-08-30 Picanol N.V. Method for driving heddle frames and weaving machine
BE1017000A3 (en) * 2006-02-20 2007-11-06 Picanol Nv METHOD FOR DRIVING WEIGHT FRAMEWORK AND WEAVING MACHINE
FR2911348A1 (en) * 2007-01-12 2008-07-18 Staubli Faverges Sca CAM MECHANICS FOR CROWN FORMATION ON WEAVING, WOVEN WEAVING AND METHOD OF DECOUPLING CAMS FROM CAMEL MECHANICS
EP1944397A1 (en) * 2007-01-12 2008-07-16 Staubli Faverges Cam shedding mechanism for forming a shed on a loom, loom and method for decoupling the cams in relation to the cam followers of a cam mechanism
EP3162932A1 (en) 2015-10-29 2017-05-03 Staubli Faverges Shedding mechanism comprising a level adjustment device and weaving machine including said mechanism
FR3043097A1 (en) * 2015-10-29 2017-05-05 Staubli Sa Ets ARMOR MECHANICAL COMPRISING A LEVELING DEVICE AND WEAVING COMPRISING AN ARMOR MECHANICAL MECHANICAL
CN107059200A (en) * 2015-10-29 2017-08-18 史陶比尔法万举 Shedding mechanism including level(l)ing device is with including the loom of the mechanism
US9873961B2 (en) 2015-10-29 2018-01-23 Staubli Faverges Shedding mechanism comprising a level adjustment device and weaving machine including said mechanism
CN107059200B (en) * 2015-10-29 2020-06-30 史陶比尔法万举 Shedding mechanism comprising a level adjustment device and weaving loom comprising said mechanism

Also Published As

Publication number Publication date
CN1030579C (en) 1995-12-27
EP0580528B1 (en) 1995-03-15
TW223666B (en) 1994-05-11
JPH06158470A (en) 1994-06-07
RU2085633C1 (en) 1997-07-27
ES2070652T3 (en) 1995-06-01
JP3320841B2 (en) 2002-09-03
US5341850A (en) 1994-08-30
KR100260048B1 (en) 2000-07-01
CN1086275A (en) 1994-05-04
KR940002388A (en) 1994-02-17
DE69300087D1 (en) 1995-04-20
DE69300087T2 (en) 1995-11-09

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