EP0239514A1 - Rotary dobby for looms - Google Patents

Rotary dobby for looms Download PDF

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Publication number
EP0239514A1
EP0239514A1 EP87420084A EP87420084A EP0239514A1 EP 0239514 A1 EP0239514 A1 EP 0239514A1 EP 87420084 A EP87420084 A EP 87420084A EP 87420084 A EP87420084 A EP 87420084A EP 0239514 A1 EP0239514 A1 EP 0239514A1
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EP
European Patent Office
Prior art keywords
hook
spout
eccentric
disc
arm
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Granted
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EP87420084A
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German (de)
French (fr)
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EP0239514B1 (en
Inventor
Joseph Palau
Jean-Paul Froment
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Staubli Faverges SCA
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Staubli Faverges SCA
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Publication of EP0239514A1 publication Critical patent/EP0239514A1/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies

Definitions

  • the present invention relates to mechanics for the formation of the crowd on the weaving machines and it relates more particularly to the dobbies of the rotary type, that is to say in which the control of the alternating vertical displacement of each heald frame is provided by means of an oscillating rod, one end of which is coupled to said frame while the opposite end, cut out from an opening, is engaged on an actuating eccentric.
  • the object of the present invention is to simplify the construction of the rotary dobbies according to the aforementioned French patent, without compromising the reliability of the operation.
  • each of the articulated hooks is profiled on its outer edge in order to cooperate, when actuated with uncoupling, with one or the other of two retaining latches mounted at two points diametrically opposite with respect to the dobby tree.
  • reference 1 designates the frame of the dobby, which supports the main shaft 2 animated by the jerky rotation movement, which shaft is intended to control a series of oscillating connecting rods 3 each of which is coupled by a lever 4 to one of the heald frames 5 of the machine to weave associated with the dobby considered.
  • each of the connecting rods 3 is cut, opposite its coupling point with its lever 4, an opening 3 a which is engaged, with the interposition of a bearing 6, on the cylindrical periphery of an eccentric actuation 7; the latter is mounted idly on the shaft 2 by means of a bearing 8.
  • Each connecting rod 3 is associated with a drive disc 9 angularly secured to the shaft 2 and it will be observed that the periphery of this disc 9 is cut from two notches 9 a , diametrically opposite one another. These two notches 9 a are intended to cooperate with an articulated coupling hook 10 mounted on a small axis 11 carried by an overhanging plate 7 a , laterally secured to the eccentric 7.
  • Fig. 3 and 4 clearly show the profile of the hook 10 which has, on either side of its articulation axis 11, a selection arm 10 ⁇ and a coupling arm 10 ⁇ .
  • the edge of this 10" arm which is turned towards the disc 9 comprises a protruding tip 10 has own under the effect of elastic return means constituted by a spring 12 interposed between the plate 7a and the end of arm 10" of said hook, to be worn permanently against the free edge of the disc 9 and to engage, during each stop of the shaft 2, inside one or the other of the two notches 9 a .
  • the hook 10 is controlled, against the spring 12, by the end of two selector levers 13 (fig. 1) pivotally carried by two fixed axes 14 oriented parallel to the shaft 2.
  • These pivoting levers 13 are coupled one to the other by a link 15 and one of them (the one on the right in fig. 1) has an extension on which articulate two rods 16 which are moved transversely to their axis by two needles 17 controlled axially by a program reading device 18 with electronic or mechanical operation.
  • the transverse displacement of the rods 16 under the effect of the needles 17 allows, according to the program incorporated in the device 18, to the said rods either to cooperate with two pushers 19 with reciprocating movement thereby ensuring the actuation of the two pivoting levers 13, or to escape the action of said pushers 19 while remaining stationary.
  • a spring 20, interposed between one of the levers 13 and the frame 1, tends to permanently spring back towards the shaft 2 the end of the lever 13 with which it is associated, and on the contrary to maintain the end of the opposite lever 13 spaced from said shaft, so that the action of this spring 20 is exerted in an antagonistic manner with respect to that of the pushers 19.
  • a fixed stop 21 limits the tilting of the levers 13 under the effect of spring 20.
  • the selector lever 13 which is then placed at the level of the hook 10 receives no action from the reading device 18 (case of fig. 3)
  • the spring 12 associated with said hook 10 elastically engages the spout 10 a thereof in the notch 9 a of the drive disc which is then placed opposite; there is therefore coupling of the shaft 2 and the eccentric 7 through the hook 10 and the disc 9, so that the connecting rod 3 is controlled.
  • a notch 10 b which is intended to cooperate with the end spout 22 a of one or the other of two locks 22.
  • these two locks 22, oriented opposite one another are mounted on longitudinal supports 23 fixed to the frame 1 so as to be diametrically opposite one another with respect to the tree 2.
  • each of these latches 22 is pivotally mounted on its support 23 and receives the action of a spring 24 which tends to keep it applied against a fixed stop 25.
  • the angular immobilization of the connecting rod 3 as ensured in accordance with the invention has very great simplicity while proving to be perfectly effective.
  • the plate 7 has eccentric 7 and the hook 10 itself can be constituted by flat parts having no camber or bending. It will be noted that the coupling and immobilization functions are grouped in the same arm 10 ⁇ of the single hook 10, which makes it possible to obtain very high precision. In addition, and the point deserves to be stressed, there is action on the hook 10 only during the angular immobilization of the rod 3, which limits wear to a considerable extent.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

L'immobilisation angulaire de la bielle (3) est assurée par un verrou (22) avec la dent duquel le crochet d'accouplement (10) vient automatiquement coopérer lorsqu'il est actionné par celui des deux leviers pivotants (13) qui est lui-même commandé par le dispositif de lisage (18).The angular immobilization of the connecting rod (3) is ensured by a lock (22) with the tooth of which the coupling hook (10) automatically cooperates when it is actuated by that of the two pivoting levers (13) which is itself - even controlled by the reading device (18).

Description

La présente invention a trait aux mécaniques pour la formation de la foule sur les machines à tisser et elle vise plus particulièrement les ratières du type rotatif, c'est-à-dire dans lesquelles la commande du déplacement vertical alternatif de chaque cadre de lisses est assurée à l'aide d'une bielle oscillante dont une extrémité est attelée audit cadre tandis que l'extrémité opposée, découpée d'une ouverture, est engagée sur un excentrique d'actionnement.The present invention relates to mechanics for the formation of the crowd on the weaving machines and it relates more particularly to the dobbies of the rotary type, that is to say in which the control of the alternating vertical displacement of each heald frame is provided by means of an oscillating rod, one end of which is coupled to said frame while the opposite end, cut out from an opening, is engaged on an actuating eccentric.

Par le brevet français No 80 06545/2 478 682 déposé le 20 Mars 1980 au nom de la Demanderesse, on connaît des ratières rotatives dans lesquelles l'excentrique, monté fou sur un arbre animé d'un mouvement de rotation avec arrêt tous les 180°, est solidaire latéralement d'un plateau débordant formant support pour un organe d'accouplement destiné à lier angulairement au moment opportun l'arbre à l'excentrique afin d'opérer le déplacement de la bielle et du cadre attelé à cette dernière. Cet organe d'accouple­ment, ainsi placé à l'extérieur de l'excentrique, est en fait constitué par un crochet articulé qui est soumis, à l'encontre de moyens élastiques de rappel, à l'action de l'un ou de l'autre de deux leviers sélecteurs pivotants actionnés par le dispositif de lisage de la ratière, en fonction du programme incorporé audit dispositif. Chacune des deux extrémités opposées du crochet comporte un bec propre à coopérer avec l'une ou l'autre de deux encoches pratiquées dans un disque d'entraînement angulairement solidaire de l'arbre à rotation saccadée.In the French Patent No. 80 06545/2 478 682 filed March 20, 1980 on behalf of the Applicant, discloses rotary dobbies in which the eccentric, crazy mounted on a lively shaft of a rotational movement with stop all 180 °, is laterally secured to an overhanging plate forming a support for a coupling member intended to angularly link the shaft to the eccentric at the appropriate time in order to operate the displacement of the connecting rod and of the frame coupled to the latter. This coupling member, thus placed outside the eccentric, is in fact constituted by an articulated hook which is subjected, against elastic return means, to the action of one or the 'other of two pivoting selector levers actuated by the reading device of the dobby, according to the program incorporated in said device. Each of the two opposite ends of the hook has a spout suitable for cooperating with one or the other of two notches formed in a drive disc angularly integral with the jerky rotation shaft.

On comprend que lorsque l'un des becs du crochet est engagé par les moyens élastiques de rappel à l'intérieur de l'une des encoches du disque d'entraînement, l'excentrique est lié angulairement à l'arbre et opère l'actionnement de la bielle. Au contraire, lorsque l'un des leviers sélecteurs pivotants vient porter contre le crochet, il n'y a plus accouplement et l'excentrique n'est donc pas déplacé par l'arbre, de telle sorte que la bielle n'est elle-même pas commandée ; comme à cette position l'autre bec du crochet est engagé dans une entaille pratiquée dans un bossage annulaire de la bielle, cette dernière est liée angulairement à l'excentrique à travers le crochet et est en conséquence immobilisée, en évitant de la sorte tout déplacement parasite de la bielle sous l'effet du poids du cadre de lisses correspondant.It is understood that when one of the hooks spouts is engaged by the elastic return means inside one of the notches of the drive disc, the eccentric is angularly linked to the shaft and operates the actuation of the connecting rod. On the contrary, when one of the pivoting selector levers comes to bear against the hook, there is no longer coupling and the eccentric is therefore not displaced by the shaft, so that the connecting rod is not itself not even ordered; as at this position the other hook spout is engaged in a notch made in an annular boss of the connecting rod, the latter is angularly linked to the eccentric through the hook and is consequently immobilized, thereby avoiding any displacement parasite of the connecting rod under the effect of the weight of the corresponding heald frame.

La présente invention a pour objet de simplifier la construction des ratières rotatives suivant le brevet français sus­mentionné, sans nuire à la fiabilité du fonctionnement.The object of the present invention is to simplify the construction of the rotary dobbies according to the aforementioned French patent, without compromising the reliability of the operation.

Conformément à l'invention, chacun des crochets articulés est profilé sur son bord extérieur afin de coopérer, lorsqu'il est actionné au désaccouplement, avec l'un ou l'autre de deux verrous de retenue montés en deux points diamétralement opposés par rapport à l'arbre de la ratière.According to the invention, each of the articulated hooks is profiled on its outer edge in order to cooperate, when actuated with uncoupling, with one or the other of two retaining latches mounted at two points diametrically opposite with respect to the dobby tree.

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 :

  • Fig. 1 est une coupe transversale d'une ratière rotative suivant l'invention, montrant l'agencement de l'un des ensembles de celle-ci destinés à la commande des cadres de lisses.
  • Fig. 2 est une coupe axiale partielle de l'un de ces ensembles.
  • Fig. 3 et 4 sont des vues de détails illustrant le fonctionnement du crochet basculant d'accouplement.
  • Fig. 5 est une coupe transversale analogue à celle de fig. 1, mais correspondant à une variante 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:
  • Fig. 1 is a cross section of a rotary dobby according to the invention, showing the arrangement of one of the assemblies thereof intended for the control of heald frames.
  • Fig. 2 is a partial axial section of one of these assemblies.
  • Fig. 3 and 4 are detail views illustrating the operation of the tilting coupling hook.
  • Fig. 5 is a cross section similar to that of FIG. 1, but corresponding to a variant implementation of the invention.

En fig. 1, la référence 1 désigne le bâti de la ratière, qui supporte l'arbre principal 2 animé du mouvement de rotation saccadé, lequel arbre est destiné à assurer la commande d'une série de bielles oscillantes 3 dont chacune est attelée par un levier 4 à l'un des cadres de lisses 5 de la machine à tisser associée à la ratière considérée.In fig. 1, reference 1 designates the frame of the dobby, which supports the main shaft 2 animated by the jerky rotation movement, which shaft is intended to control a series of oscillating connecting rods 3 each of which is coupled by a lever 4 to one of the heald frames 5 of the machine to weave associated with the dobby considered.

Comme plus particulièrement montré en fig. 2, chacune des bielles 3 est découpée, à l'opposé de son point d'attelage avec son levier 4, d'une ouverture 3a qui est engagée, avec interposition d'un roulement 6, sur la périphérie cylindrique d'un excentrique d'actionnement 7 ; ce dernier est monté fou sur l'arbre 2 par l'intermédiaire d'un roulement 8. A chaque bielle 3 est associé un disque d'entraînement 9 angulairement solidaire de l'arbre 2 et l'on observera que la périphérie de ce disque 9 est découpée de deux encoches 9a, diamétralement opposées l'une à l'autre. Ces deux encoches 9a sont destinées à coopérer avec un crochet articulé d'accouplement 10 monté sur un petit axe 11 porté par un plateau débordant 7a, solidaire latéralement de l'excentrique 7.As more particularly shown in fig. 2, each of the connecting rods 3 is cut, opposite its coupling point with its lever 4, an opening 3 a which is engaged, with the interposition of a bearing 6, on the cylindrical periphery of an eccentric actuation 7; the latter is mounted idly on the shaft 2 by means of a bearing 8. Each connecting rod 3 is associated with a drive disc 9 angularly secured to the shaft 2 and it will be observed that the periphery of this disc 9 is cut from two notches 9 a , diametrically opposite one another. These two notches 9 a are intended to cooperate with an articulated coupling hook 10 mounted on a small axis 11 carried by an overhanging plate 7 a , laterally secured to the eccentric 7.

Fig. 3 et 4 font bien ressortir le profil du crochet 10 qui présente, de part et d'autre de son axe d'articulation 11, un bras de sélection 10ʹ et un bras d'accouplement 10ʺ. Le bord de ce bras 10ʺ qui est tourné en direction du disque 9 comporte un bec en saillie 10a, propre sous l'effet de moyens élastiques de rappel constitués par un ressort 12 interposé entre le plateau 7a et l'extrémité du bras 10ʺ dudit crochet, à porter en permanence contre le bord libre du disque 9 et à s'engager, lors de chaque arrêt de l'arbre 2, à l'intérieur de l'une ou de l'autre des deux encoches 9a.Fig. 3 and 4 clearly show the profile of the hook 10 which has, on either side of its articulation axis 11, a selection arm 10ʹ and a coupling arm 10ʺ. The edge of this 10" arm which is turned towards the disc 9 comprises a protruding tip 10 has own under the effect of elastic return means constituted by a spring 12 interposed between the plate 7a and the end of arm 10" of said hook, to be worn permanently against the free edge of the disc 9 and to engage, during each stop of the shaft 2, inside one or the other of the two notches 9 a .

Le crochet 10 est commandé, à l'encontre du ressort 12, par l'extrémité de deux leviers sélecteurs 13 (fig. 1) portés à pivotement par deux axes fixes 14 orientés parallèlement à l'arbre 2. Ces leviers pivotants 13 sont attelés l'un à l'autre par une biellette 15 et l'un d'eux (celui de droite en fig. 1) comporte un prolongement sur lequel s'articulent deux tiges 16 qui sont déplacées transversalement à leur axe par deux aiguilles 17 commandées axialement par un dispositif de lisage à programme 18 à fonctionnement électronique ou mécanique. A la manière usuelle, le déplacement transversal des tiges 16 sous l'effet des aiguilles 17 permet, en fonction du programme incorporé au dispositif 18, auxdites tiges soit de coopérer avec deux poussoirs 19 à mouvement alternatif en assurant de la sorte l'actionnement des deux leviers pivotants 13, soit d'échapper à l'action desdits poussoirs 19 en restant alors immobiles.The hook 10 is controlled, against the spring 12, by the end of two selector levers 13 (fig. 1) pivotally carried by two fixed axes 14 oriented parallel to the shaft 2. These pivoting levers 13 are coupled one to the other by a link 15 and one of them (the one on the right in fig. 1) has an extension on which articulate two rods 16 which are moved transversely to their axis by two needles 17 controlled axially by a program reading device 18 with electronic or mechanical operation. In the usual way, the transverse displacement of the rods 16 under the effect of the needles 17 allows, according to the program incorporated in the device 18, to the said rods either to cooperate with two pushers 19 with reciprocating movement thereby ensuring the actuation of the two pivoting levers 13, or to escape the action of said pushers 19 while remaining stationary.

On observera qu'un ressort 20, interposé entre l'un des leviers 13 et le bâti 1, tend à rappeler élastiquement en permanence en direction de l'arbre 2 l'extrémité du levier 13 auquel il est associé, et au contraire à maintenir l'extrémité du levier 13 opposé écartée dudit arbre, de telle sorte que l'action de ce ressort 20 s'exerce de manière antagoniste par rapport à celle des poussoirs 19. Une butée fixe 21 limite le basculement des leviers 13 sous l'effet du ressort 20.It will be observed that a spring 20, interposed between one of the levers 13 and the frame 1, tends to permanently spring back towards the shaft 2 the end of the lever 13 with which it is associated, and on the contrary to maintain the end of the opposite lever 13 spaced from said shaft, so that the action of this spring 20 is exerted in an antagonistic manner with respect to that of the pushers 19. A fixed stop 21 limits the tilting of the levers 13 under the effect of spring 20.

Le fonctionnement de la ratière ci-dessus décrite se comprend aisément.The operation of the dobby described above is easily understood.

Si, lors de l'arrêt de l'arbre 2, le levier sélecteur 13 qui se trouve alors disposé au niveau du crochet 10 ne reçoit aucune action du dispositif de lisage 18 (cas de fig. 3), le ressort 12 associé audit crochet 10 engage élastiquement le bec 10a de celui-ci dans l'encoche 9a du disque d'entraînement qui est alors placée en vis-à-vis ; il y a en conséquence accouplement de l'arbre 2 et de l'excentrique 7 à travers le crochet 10 et le disque 9, de telle sorte que la bielle 3 est commandée.If, during the stopping of the shaft 2, the selector lever 13 which is then placed at the level of the hook 10 receives no action from the reading device 18 (case of fig. 3), the spring 12 associated with said hook 10 elastically engages the spout 10 a thereof in the notch 9 a of the drive disc which is then placed opposite; there is therefore coupling of the shaft 2 and the eccentric 7 through the hook 10 and the disc 9, so that the connecting rod 3 is controlled.

Si au contraire, lors de l'arrêt, l'un des deux leviers sélecteurs 13 exerce une action sur le crochet 10 qui est alors repoussé jusqu'à ce que son bras 10ʹ vienne au contact du disque 9, à la manière illustrée en fig. 4, le bec 10a est dégagé de l'encoche 9a et il n'y a aucun accouplement ; l'excentrique 7 ne peut alors actionner la bielle 3.If on the contrary, during the stop, one of the two selector levers 13 exerts an action on the hook 10 which is then pushed back until its arm 10ʹ comes into contact with the disc 9, in the manner illustrated in fig . 4, the beak 10 a is released from notch 9 a and there is no coupling; the eccentric 7 cannot then actuate the connecting rod 3.

Toutefois, il est indispensable d'assurer à ce moment là l'immobilisation positive de l'ensemble bielle-excentrique et c'est à cet effet qu'on a prévu, dans le bord extérieur du bras 10ʺ du crochet 10 et au-delà du doigt 10a, une entaille 10b qui est destinée à coopérer avec le bec terminal 22a de l'un ou de l'autre de deux verrous 22. Comme montré en fig. 1, ces deux verrous 22, orientés à l'opposé l'un de l'autre, sont montés sur des supports longitudinaux 23 fixés au bâti 1 de façon à se trouver diamétralement opposés l'un à l'autre par rapport à l'arbre 2.However, it is essential to ensure at this time the positive immobilization of the rod-eccentric assembly and it is for this purpose that provision has been made, in the outer edge of the arm 10ʺ of the hook 10 and beyond of the finger 10 a , a notch 10 b which is intended to cooperate with the end spout 22 a of one or the other of two locks 22. As shown in FIG. 1, these two locks 22, oriented opposite one another, are mounted on longitudinal supports 23 fixed to the frame 1 so as to be diametrically opposite one another with respect to the tree 2.

On comprend que lorsque l'un des leviers sélecteurs 13 vient actionner le crochet 10 à la manière illustrée en fig. 4, le bras 10ʺ de celui-ci est projeté vers l'extérieur, de telle sorte que l'entaille 10b vient naturellement se crocheter contre le bec 22a du verrou considéré ; celui-ci assure de la sorte, à travers le crochet 10, l'immobilisation angulaire de l'excentrique 7 et de la bielle 3. Dès que l'action du levier sélecteur 13 sur le crochet 10 cesse, le ressort 12 associé à celui-ci opère le dégagement de l'entaille 10b hors du bec 22a du verrou 22.It is understood that when one of the selector levers 13 actuates the hook 10 in the manner illustrated in FIG. 4, the arm 10ʺ thereof is projected outward, so that the notch 10 b is naturally hooked against the spout 22 a of the lock considered; the latter thus ensures, through the hook 10, the angular immobilization of the eccentric 7 and of the connecting rod 3. As soon as the action of the selector lever 13 on the hook 10 ceases, the spring 12 associated with that -This operates the release of the notch 10 b out of the spout 22 a of the lock 22.

En fonctionnement normal, les verrous 22 restent parfaitement immobiles puisque c'est le crochet articulé 10 qui vient s'accrocher par son entaille 10b. Toutefois, en vue de constituer une sécurité apte à fonctionner de manière automatique, chacun de ces verrous 22 est monté à pivotement sur son support 23 et reçoit l'action d'un ressort 24 qui tend à le maintenir appliqué contre une butée fixe 25. Dans ces conditions, si à la suite d'un défaut de fonctionnement le bec 10a du crochet 10 venait à rester partiellement engagé dans l'une des encoches 9a du disque 9 alors que le verrou correspondant 22 assurerait encore la retenue dudit crochet, par suite du profil tronconique conféré à cet effet au bec 22a et à l'entaille 10b, l'effort exercé par le crochet sur le verrou provoquerait le basculement de ce dernier à l'encontre de son ressort 24 et la libération totale dudit crochet.In normal operation, the latches 22 remain perfectly stationary since it is the articulated hook 10 which is hooked by its notch 10 b . However, with a view to constituting a safety device capable of operating automatically, each of these latches 22 is pivotally mounted on its support 23 and receives the action of a spring 24 which tends to keep it applied against a fixed stop 25. in those circumstances, if as a result of a malfunction of the beak 10a of the hook 10 were to remain partially engaged in one of the notches 9a of the disc 9, while the corresponding latch 22 still ensure the retaining of said hook, as a result of the frustoconical profile imparted for this purpose to the spout 22 a and to the notch 10 b , the force exerted by the hook on the bolt would cause the latter to tilt against its spring 24 and release total of said hook.

On observera que l'immobilisation angulaire de la bielle 3 telle qu'assurée conformément à l'invention présente une très grande simplicité tout en se révélant parfaitement efficace. Le plateau 7a de l'excentrique 7 et le crochet 10 lui-même peuvent être constitués par des pièces plates ne comportant aucune cambrure ou pliage. On notera que les fonctions d'accouplement et d'immobilisation sont regroupées dans le même bras 10ʺ du seul crochet 10, ce qui permet d'obtenir une très grande précision. En outre, et le point mérite d'être souligné, il n'y a action sur le crochet 10 que lors de l'immobilisation angulaire de la bielle 3, ce qui limite l'usure dans une mesure considérable.It will be observed that the angular immobilization of the connecting rod 3 as ensured in accordance with the invention has very great simplicity while proving to be perfectly effective. The plate 7 has eccentric 7 and the hook 10 itself can be constituted by flat parts having no camber or bending. It will be noted that the coupling and immobilization functions are grouped in the same arm 10ʺ of the single hook 10, which makes it possible to obtain very high precision. In addition, and the point deserves to be stressed, there is action on the hook 10 only during the angular immobilization of the rod 3, which limits wear to a considerable extent.

Il convient de relever qu'un résultat identique serait obtenu en montant les verrous 22, non plus sur des supports communs 23 solidaires du bâti fixe 1 de la ratière, mais sur des supports individuels 26 prévus sur chacune des bielles 3 elle-mêmes, à la manière illustrée en fig. 5. L'immobilisation angulaire de chaque bielle 3 est alors assurée en reliant celle-ci à son excentrique d'actionnement 7, comme dans le brevet français antérieur mentionné au début des présentes.It should be noted that an identical result would be obtained by mounting the locks 22, no longer on common supports 23 integral with the fixed frame 1 of the dobby, but on individual supports 26 provided on each of the connecting rods 3 themselves, the way illustrated in fig. 5. The angular immobilization of each connecting rod 3 is then ensured by connecting the latter to its actuating eccentric 7, as in the prior French patent mentioned at the beginning of the present document.

Claims (2)

1. Ratière du type rotatif pour machines à tisser, du genre dans laquelle chacune des bielles oscillantes (3) attelées aux cadres de lisses (5) est montée sur un excentrique d'actionnement (7) qui tourne librement sur un arbre (2) à rotation saccadée mais qui peut être lié angulairement à celui-ci à travers d'une part un disque d'entraînement (9) solidaire dudit arbre et d'autre part un crochet articulé (10) comprenant un bras de sélection (10ʹ) et un bras d'entraînement (10ʺ) prévus de part et d'autre de son axe d'articulation (11), lequel crochet, porté par un plateau (7a) de l'excentrique (7), est placé sous la commande de l'un ou de l'autre de deux leviers sélecteurs pivotants (13) associés à un dispositif de lisage (18) en vue d'agir à l'encontre de moyens élastiques de rappel (12) tendant à engager le bec (10a) du bras d'accouplement (10ʺ) dans l'une ou l'autre de deux encoches (9a) du disque (g), la bielle (3) étant immobilisée angulairement lorsque le levier (13) considéré agit sur le crochet (10) pour le désaccoupler dudit disque (9), caractérisée en ce que le bras d'accouplement (10ʺ) du crochet articulé (10) comporte, substantiellement à l'opposé du bec d'entraînement (10a), un profil propre à venir coopérer, au moment du retrait de ce bec (10a), avec l'un ou l'autre de deux verrous extérieurs de retenue (22) qui assurent de ce fait l'immobilisation angulaire de l'excentrique (7) et de la bielle (3) considérée.1. Dobby of the rotary type for weaving machines, of the kind in which each of the oscillating connecting rods (3) coupled to the heald frames (5) is mounted on an actuating eccentric (7) which rotates freely on a shaft (2) jerky rotation but which can be angularly linked thereto through on the one hand a drive disc (9) integral with said shaft and on the other hand an articulated hook (10) comprising a selection arm (10ʹ) and a drive arm (10") provided on either side of its axis of articulation (11), which hook, borne by a plate (7 a) of the eccentric (7) is placed under the control of one or the other of two pivoting selector levers (13) associated with a reading device (18) for acting against return elastic means (12) tending to engage the spout (10 a ) of the coupling arm (10ʺ) in one or the other of two notches (9 a ) of the disc (g), the connecting rod (3) being immobilized angularly when the lever (13) considers é acts on the hook (10) to disengage it from said disc (9), characterized in that the coupling arm (10ʺ) of the articulated hook (10) comprises, substantially opposite the drive spout (10 a ), a profile suitable for coming to cooperate, at the time of the withdrawal of this spout (10 a ), with one or the other of two external retaining latches (22) which thereby ensure the angular immobilization of the eccentric (7) and the connecting rod (3) considered. 2. Ratière suivant la revendication 1, caractérisée en ce que le bord extérieur du bras d'accouplement (10ʺ) du crochet (10) est découpé d'une entaille (10b) établie à un profil tronconique, tandis que chaque verrou (22), pourvu d'un bec d'accrochage (22a) établi au même profil, est mobile à l'encontre de moyens élastiques de rappel (24) de façon à constituer un système de sécurité assurant le déplacement automatique du verrou et la libération du crochet dans le cas où par suite d'un basculement incomplet ledit crochet (10) serait encore lié angulairement au disque d'entraînement (9).2. Dobby according to claim 1, characterized in that the outer edge of the coupling arm (10ʺ) of the hook (10) is cut by a notch ( 10b ) established to a frustoconical profile, while each latch (22 ), provided with a hooking spout (22 a ) established to the same profile, is movable against elastic return means (24) so as to constitute a security system ensuring the automatic movement of the lock and the release of the hook in the event that as a result of an incomplete tilting said hook (10) is still angularly linked to the drive disc (9).
EP87420084A 1986-03-26 1987-03-26 Rotary dobby for looms Expired EP0239514B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8604635A FR2596425B1 (en) 1986-03-26 1986-03-26 ROTARY RATIERE FOR WEAVING MACHINES
FR8604635 1986-03-26

Publications (2)

Publication Number Publication Date
EP0239514A1 true EP0239514A1 (en) 1987-09-30
EP0239514B1 EP0239514B1 (en) 1989-11-15

Family

ID=9333753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420084A Expired EP0239514B1 (en) 1986-03-26 1987-03-26 Rotary dobby for looms

Country Status (6)

Country Link
US (1) US4858655A (en)
EP (1) EP0239514B1 (en)
JP (2) JPS62238840A (en)
DE (1) DE3761001D1 (en)
ES (1) ES2011642B3 (en)
FR (1) FR2596425B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457698A1 (en) * 1990-05-18 1991-11-21 S.A. DES ETABLISSEMENTS STAUBLI (France) Process for mounting the driving elements of rotary dobbies for looms and obtained dobbies
EP0467444A1 (en) * 1990-07-20 1992-01-22 Brevtex Sa Actuation device for the programming of rotary dobbies in looms
EP0768402A1 (en) * 1995-10-06 1997-04-16 FIMTEXTILE S.p.A. Device for programming rotary dobbies in weaving machines
EP0882821A1 (en) * 1997-06-03 1998-12-09 FIMTEXTILE S.p.A. Programming device for rotary dobbies in weaving machines

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US5214834A (en) * 1990-05-18 1993-06-01 S.A. Des Etablissments Staubli Process for assembling the actuation elements of a rotating dobby
IT1243890B (en) * 1990-11-05 1994-06-28 Giobbe Srl DEVICE FOR THE COMMAND AND CONTROL OF A ROTARY DOBBY OF TEXTILE MACHINES WITH CAM PROFILE LEVER AND RELATIVE COOPERATING CONTRAST MEANS
IT1260291B (en) * 1992-12-18 1996-04-03 Lucio Burigana ROTARY DOBBY
FR2757882B1 (en) * 1996-12-31 1999-02-19 Staubli Sa Ets ROTARY RATIERE AND WEAVING MACHINE EQUIPPED WITH SUCH A RATIERE
FR2772793B1 (en) * 1997-12-24 2000-01-28 Staubli Sa Ets LOCKING DEVICE OF AN ELECTRIC ROTARY ACTUATOR FOR FORMING CROWD ON WEAVING MATERIAL, WEAVING MECHANICS AND WEAVING MATERIAL
US6660198B1 (en) 2000-09-19 2003-12-09 Marconi Communications, Inc. Process for making a plastic counterflow heat exchanger
US6364007B1 (en) 2000-09-19 2002-04-02 Marconi Communications, Inc. Plastic counterflow heat exchanger
US7475708B2 (en) * 2004-11-17 2009-01-13 Groz-Beckert Kg Shaft drive for heald shafts of weaving machines
DE102005059911B3 (en) * 2005-12-15 2007-02-08 Groz-Beckert Kg Heddle frame drive unit for loom, includes non circular-gearing of varying velocity ratio, with shaft compensating fluctuations in loading
CN101709525B (en) * 2009-11-19 2011-04-13 常熟纺织机械厂有限公司 Three-shed shedding mechanism for rotary electronic dobby
FR2990958B1 (en) * 2012-05-24 2014-06-13 Staubli Sa Ets CROWN FORMING DEVICE AND WOVEN WEAVING EQUIPPED WITH SUCH A DEVICE

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EP0036830A1 (en) * 1980-03-20 1981-09-30 S.A. DES ETABLISSEMENTS STAUBLI (France) Dobbies of the rotational type for looms
EP0050160A1 (en) * 1980-10-10 1982-04-28 GebràœDer Sulzer Aktiengesellschaft Coupling system for operating the heald frames in a loom
EP0056098A1 (en) * 1981-01-09 1982-07-21 Textilma AG Coupling device, more especially for a loom
EP0109999A1 (en) * 1982-12-03 1984-06-13 GebràœDer Sulzer Aktiengesellschaft Loom dobby

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DE3069829D1 (en) * 1980-09-12 1985-01-31 Sulzer Ag Coupling system for operating the heald frames in a loom
FR2515702A1 (en) * 1981-10-29 1983-05-06 Staubli Sa Ets IMPROVEMENTS ON ROTARY TRACKS
EP0142681B1 (en) * 1983-10-07 1987-01-21 Stäubli AG (Stäubli SA) (Stäubli Ltd.) Lifting device for a rotary dobby
DE3414639A1 (en) * 1984-04-18 1985-10-24 W. Schlafhorst & Co, 4050 Mönchengladbach ROTATIONAL SHAFT

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0036830A1 (en) * 1980-03-20 1981-09-30 S.A. DES ETABLISSEMENTS STAUBLI (France) Dobbies of the rotational type for looms
EP0050160A1 (en) * 1980-10-10 1982-04-28 GebràœDer Sulzer Aktiengesellschaft Coupling system for operating the heald frames in a loom
EP0056098A1 (en) * 1981-01-09 1982-07-21 Textilma AG Coupling device, more especially for a loom
EP0109999A1 (en) * 1982-12-03 1984-06-13 GebràœDer Sulzer Aktiengesellschaft Loom dobby

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457698A1 (en) * 1990-05-18 1991-11-21 S.A. DES ETABLISSEMENTS STAUBLI (France) Process for mounting the driving elements of rotary dobbies for looms and obtained dobbies
FR2662186A1 (en) * 1990-05-18 1991-11-22 Staubli Sa Ets METHOD FOR MOUNTING ACTUATORS OF ROTARY RAINFORMS FOR WEAVING FABRICS, AND RATIOS OBTAINED
EP0467444A1 (en) * 1990-07-20 1992-01-22 Brevtex Sa Actuation device for the programming of rotary dobbies in looms
EP0768402A1 (en) * 1995-10-06 1997-04-16 FIMTEXTILE S.p.A. Device for programming rotary dobbies in weaving machines
EP0882821A1 (en) * 1997-06-03 1998-12-09 FIMTEXTILE S.p.A. Programming device for rotary dobbies in weaving machines

Also Published As

Publication number Publication date
US4858655A (en) 1989-08-22
EP0239514B1 (en) 1989-11-15
FR2596425B1 (en) 1988-05-20
ES2011642B3 (en) 1990-02-01
JPH0342058Y2 (en) 1991-09-03
DE3761001D1 (en) 1989-12-21
JPS62238840A (en) 1987-10-19
JPH0246879U (en) 1990-03-30
FR2596425A1 (en) 1987-10-02

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