EP1331293B1 - Method of fabricating a heddle frame slat for the heddle frame of a weaving machine and a heddle frame slat obtained by such method - Google Patents

Method of fabricating a heddle frame slat for the heddle frame of a weaving machine and a heddle frame slat obtained by such method Download PDF

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Publication number
EP1331293B1
EP1331293B1 EP03360003A EP03360003A EP1331293B1 EP 1331293 B1 EP1331293 B1 EP 1331293B1 EP 03360003 A EP03360003 A EP 03360003A EP 03360003 A EP03360003 A EP 03360003A EP 1331293 B1 EP1331293 B1 EP 1331293B1
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EP
European Patent Office
Prior art keywords
support section
slide bar
slat
heddle
template
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EP03360003A
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German (de)
French (fr)
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EP1331293A1 (en
Inventor
Joseph Scheiwe
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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
    • D03C9/00—Healds; Heald frames
    • D03C9/06—Heald frames
    • D03C9/0608—Construction of frame parts
    • D03C9/0616—Horizontal upper or lower rods
    • D03C9/0633—Heald bars or their connection to other frame parts

Definitions

  • the present invention relates to a method for manufacturing a crossbar for a weaving machine frame as well as a cross member obtained by said method, said crosspiece comprising at least one support profile and a support rod secured to said profile along a junction area.
  • Each stringer frame constitutes a rectangular structure arranged to carry weaving rails.
  • this rectangular structure conventionally comprises an upper cross member formed of a support profile integral with an upper support rod, a lower crossbar formed of a support profile secured to a lower support rod and two lateral uprights assembled at the ends of the sleepers to form said frame.
  • the main purpose of the support profiles is to provide the rigidity that is missing from the support rods and, in known manner, comprise a section greater than that of the support rods.
  • each weaving loom consists of a metal strip provided at its ends with a loop for mounting on the rods-smooth with a game of operation, and in the center of an eyelet for carrying and guiding a wire of chain.
  • weaving webs There are therefore as many weaving webs as warp threads, these weaving webs being distributed, for example one out of two, on two frames of smooth.
  • the stringer frames are set in reciprocating vertical movement by a suitable drive mechanism. For example for a speed of 1200 shots per minute, each smooth frame is animated at a speed of 600 periods per minute. The constant increase in weaving speeds has revealed new mechanical behaviors and technical problems both in the framework of the woven frames and the weaving rails.
  • the support profiles are mainly made of aluminum alloy and the support rods are usually made of stainless steel and attached to the support profiles by means of rivets to obtain a rigid assembly.
  • the use of aluminum alloy support profiles obtained by extrusion or spinning is an interesting solution because it makes it possible to achieve at reasonable costs support profiles of reduced weight with very good straightness.
  • any lack of straightness can be easily corrected by a mechanical dressing operation that is possible thanks to the specific mechanical characteristics of metal alloys.
  • This straightness then makes it possible to use the aluminum support profile as a reference base for fastening it by riveting the smooth support rod by making it rectilinear. Indeed, this smooth support rod is not necessarily linear in the free state because of its low rigidity.
  • the present invention aims at overcoming these disadvantages by proposing a method of manufacturing a crossbar for a weaving machine frame as well as a crossbar obtained by this method, making it possible to produce at a lower cost and without a rebate a cross-bar combining characteristics of lightness and high rigidity, and whose support rod is placed on the support profile in a perfectly linear precise position, this position being controlled and reproducible.
  • the invention relates to a method of manufacture of the kind indicated in the preamble, characterized in that a rigid jig is used comprising at least a first rectilinear groove having a width substantially equal to that of the smooth carrier rod, the guide rod is placed in said groove to make it rectilinear, a bead of glue is deposited in the junction zone, said support profile is positioned in a predetermined and unconstrained manner on said jig and on the carrier rod in crushing said adhesive bead and maintaining the support profile assembly and support rod secured to said template at least during the setting time of said adhesive.
  • the template and the support profile comprise complementary interlocking shapes arranged to accurately position the support profile relative to the smooth support rod.
  • the template comprises a second groove, at least the ends of which are rectilinear and parallel to the first groove, this second groove being arranged to receive said substantially rectangular section of the support profile.
  • the support profile may be non-rectilinear and the second groove of the template may have a width greater than the total width of the rectangular section of the support profile.
  • a number n of templates is advantageously used, each template being superimposed on the previous one after having put in place the support rod, the adhesive bead and the corresponding support profile, and maintains the assembly n support profiles and n support rails smooth solidarity n n superimposed templates at least during the setting time of the glue.
  • the invention also relates to a cross member of the kind indicated in the preamble, characterized in that the support profile is rigid, in that the smooth carrier rod is non-rigid and in that the carrier rod is fixed solidarily to said support profile by gluing in a rectilinear position obtained by means of a template arranged to maintain said smooth-carrying rod relative to said support profile in this rectilinear position at least during the setting time of said glue.
  • the support profile may be a non-rectilinear profile, made of composite materials and obtained by a process selected from the group comprising at least extrusion, pultrusion.
  • This support profile may have a substantially rectangular section extended by a cross section for receiving the smooth-carrying rod. It may also have a substantially rectangular section in which is formed a longitudinal groove for receiving the rod-holder.
  • This smooth support rod may be metallic and have a section selected from the group comprising at least one T-shaped, a J-shaped.
  • the invention relates to a method of manufacturing a crossbar 2, 2 'for a frame of loom 1 of a weaving machine and a crossbar 2, 2' obtained by this method.
  • FIG. 1 An example of a traditional stringer frame 1 for a weaving machine is shown in FIG. 1. It comprises, in known manner, two substantially parallel struts 2 laterally assembled by two uprights 2 ", each strut 2 is formed of a support profile. 3 and a smooth carrier rod 4.
  • the function of the smooth carrier rods 4 is to carry and guide a set of weaving rails 5, only two of which are represented by their ends 50 in the shape of a loop, respecting 1 in the center, each weaving loom 5 carries an eyelet 51 for the passage of a warp 6.
  • These weaving laces 5 are generally made of a hardened metal material, for example stainless steel, for In order to guarantee this operating clearance J over the entire length of the stringer frame 1, the struts 4 must be perfectly linear and parallel to each other. respecting an accuracy of approximately + or - 0.3 mm.
  • the support profile 3 comprises a substantially rectangular section 30 extended by a straight section 31 adapted to receive on the smooth support rod 4 along a junction zone 40 formed of a flat surface .
  • This smooth support rod 4 may have a coated T section 4a or J 4b according to the shape of the loops 50 of the weaving rails 5.
  • FIGS. 5A and 5B illustrate an alternative embodiment of a cross member 2 ', in which the support profile 3' has a substantially rectangular section 30 in which is formed a longitudinal groove 33 able to receive the smooth support rod 4 'on the along a junction area 40 'formed of at least two parallel flat surfaces.
  • the longitudinal groove 33 may be oriented parallel to the plane of the support profile 3 ', according to the example shown, or perpendicular to the shape of the smooth support rod 4'.
  • This smooth support rod 4 ' may have a prolonged T-section coated with a connecting tab 4'a, inverted J 4b or inverted T 4'c depending on the shape of the loops 50 of the weaving rails 5.
  • the substantially rectangular section 30 of the support profile 3,3 ' has a central recess 32 which has the advantage of reducing its mass and material cost.
  • This support profile 3, 3 ' may have other sections for example in I.
  • the jig 7 and the support profile 3, 3 ' comprise complementary interlocking shapes allowing the precise positioning of the support profile 3, 3' with respect to the smooth support rod 4, 4 '.
  • the template 7 comprises a second groove 71, at least the ends of which are rectilinear and parallel to the first groove 70.
  • This second groove 71 has a width greater than the total width of the substantially rectangular section 30 of the support profile. 3, 3 '.
  • the complementary interlocking forms are constituted by the positioning members 9 and the ends of the second groove 71. It is of course possible to provide other equivalent forms.
  • positioning members 9 are constituted with reference to FIG. 3C of a T-shaped plate 90, the leg of the T forming a male part able to fit into the central recess 32 of the support profile 3, 3 ' and the T bar having a width equal to that of the ends of the groove 71 of the template 7.
  • the manufacturing method then comprises a step in which positioning members 9 are placed in the ends of the support profile 3,3 '( see Fig. 3C) before placing said support profile 3, 3 'in the jig 7.
  • the templates 7 have a wider rear part. that their front part respectively forming a female interlocking zone 72 and a male interlocking zone 73.
  • the rear part comprises two longitudinal flanges 74 delimiting the female interlocking zone 72, the interval between these two longitudinal flanges 74 corresponding to the width of the male interlocking area 73.
  • This manufacturing method therefore makes it possible to produce a crossmember 2, 2 'in which the smooth support rod 4, 4' is fixed integrally to the support profile 3, 3 'by gluing in a rectilinear position obtained by means of the jig 7 arranged for maintain this smooth rod 4, 4 'relative to the support profile 3, 3' in this position at least during the setting time of the glue.
  • This manufacturing method is particularly advantageous when using a support profile 3, 3 'which is made of a rigid material but which does not necessarily have a rectilinear geometry and a smooth support rod 4, 4' which does not It does not necessarily have a rectilinear geometry in the free state but which is made in a non-rigid material allowing straightening.
  • This difference of rigidity is obtained by the choice of the materials but also by the differences of section, the section of the rail-smooth 4, 4 'being significantly lower than that of the support profile 3, 3'.
  • this smooth support rod 4, 4 ' which constitutes the functional part of the crossbar 2, 2', is fixed in a rectilinear position imposed by the template 7.
  • the support profile 3, 3 ' is then assembled to this smooth support rod 4, 4' without undergoing significant deformation in the plane of said profile.
  • the support rod 4, 4' restete in its rectilinear position given the large difference in rigidity between the support profile 3, 3' and the smooth rod 4, 4 '. Indeed, if the smooth support rod 4,4 'tends to return to its original shape, the support profile 3, 3' being much more rigid, opposes any deformation and freezes the smooth rod 4, 4 'in the position imposed by the template 7.
  • This manufacturing method is therefore particularly suitable for support profiles 3, 3 'made of composite materials and obtained by a continuous process such as extrusion or pultrusion.
  • These composite materials are, for example, thermoset resins based on carbon fibers, glass or other fibers. They have the advantage of giving the support profile 3, 3 'a very high rigidity increasing its mechanical resistance to fatigue while significantly reducing its weight.
  • the lack of straightness related to the use of these composite materials is no longer a drawback thanks to the combination of the template 7 and the positioning members 9 or any other equivalent means.
  • this manufacturing method can also be advantageous for support profiles 3, 3 'made in the traditional manner of aluminum alloy in order to eliminate the prior straightening step. In this case, the bonding may be replaced by riveting or any equivalent means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Moulding By Coating Moulds (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Golf Clubs (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Springs (AREA)

Abstract

The heald frame, for a loom, has a cross beam formed by a rigid gauge (7) with at least one straight groove (70) with a width matching the non-rigid heddle slide bar (4) placed in it to keep it straight. A thread of adhesive is placed at the junction. A rigid support profile (3) is placed on the gauge and heddle slide bar, which is not necessarily straight, to compress the adhesive and hold the assembly together at least while the adhesive sets. The adhesive is a heat setting resin containing carbon, glass or other fibers.

Description

La présente invention concerne un procédé de fabrication d'une traverse pour cadre de lisse de machine à tisser ainsi qu'une traverse obtenue par ledit procédé, cette traverse comportant au moins un profilé de support et une tringle porte-lisse solidaire dudit profilé le long d'une zone de jonction.The present invention relates to a method for manufacturing a crossbar for a weaving machine frame as well as a cross member obtained by said method, said crosspiece comprising at least one support profile and a support rod secured to said profile along a junction area.

Les cadres de lisse sont bien connus dans le domaine de l'industrie textile et principalement utilisés dans les machines à tisser. Chaque cadre de lisse constitue une structure rectangulaire agencée pour porter des lisses de tissage. A cet effet, cette structure rectangulaire comporte de manière classique une traverse supérieure formée d'un profilé de support solidaire d'une tringle porte-lisse supérieure, dune traverse inférieure formée d'un profilé de support solidaire d'une tringle porte-lisse inférieure et de deux montants latéraux assemblés aux extrémités des traverses pour former ledit cadre. Les profilés de support ont pour principale fonction d'apporter la rigidité qui manque aux tringles porte-lisse et comportent de manière connue une section supérieure à celle des tringles porte-lisse. Par ailleurs, pour garantir le bon fonctionnement des lisses de tissage et leur coulissement sur toute la longueur du cadre, les tringles porte-lisse doivent impérativement être linéaires et parallèles entre elles avec une précision d'environ + ou - 0,3 mm. Rappelons que chaque lisse de tissage est constituée d'une lamelle métallique pourvue en ses extrémités d'une boucle pour se monter sur les tringles porte-lisse moyennant un jeu de fonctionnement, et en son centre d'un oeillet pour porter et guider un fil de chaîne. Il y a donc autant de lisses de tissage que de fils de chaîne, ces lisses de tissage étant réparties, par exemple une sur deux, sur deux cadres de lisse. Sur la machine de tissage, les cadres de lisse sont mis en mouvement vertical alternatif par un mécanisme d'entraînement adapté. Par exemple pour une vitesse de 1200 coups par minute, chaque cadre de lisse est animé à une vitesse de 600 périodes par minute. L'augmentation constante des vitesses de tissage a fait apparaître des comportements mécaniques et des problèmes techniques nouveaux aussi bien au niveau des cadres de lisse que des lisses de tissage.Smooth frames are well known in the field of the textile industry and mainly used in weaving machines. Each stringer frame constitutes a rectangular structure arranged to carry weaving rails. For this purpose, this rectangular structure conventionally comprises an upper cross member formed of a support profile integral with an upper support rod, a lower crossbar formed of a support profile secured to a lower support rod and two lateral uprights assembled at the ends of the sleepers to form said frame. The main purpose of the support profiles is to provide the rigidity that is missing from the support rods and, in known manner, comprise a section greater than that of the support rods. In addition, to ensure smooth operation of the weaving rails and their sliding over the entire length of the frame, the support rods must imperatively be linear and parallel to each other with an accuracy of about + or - 0.3 mm. Remember that each weaving loom consists of a metal strip provided at its ends with a loop for mounting on the rods-smooth with a game of operation, and in the center of an eyelet for carrying and guiding a wire of chain. There are therefore as many weaving webs as warp threads, these weaving webs being distributed, for example one out of two, on two frames of smooth. On the weaving machine, the stringer frames are set in reciprocating vertical movement by a suitable drive mechanism. For example for a speed of 1200 shots per minute, each smooth frame is animated at a speed of 600 periods per minute. The constant increase in weaving speeds has revealed new mechanical behaviors and technical problems both in the framework of the woven frames and the weaving rails.

A ce jour, les profilés de support sont essentiellement fabriqués en alliage d'aluminium et les tringles porte-lisse sont habituellement fabriquées en acier inoxydable et rapportées sur les profilés de support au moyen de rivets afin d'obtenir un assemblage rigide. L'utilisation de profilés de support en alliage d'aluminium obtenus par extrusion ou filage est une solution intéressante car elle permet de réaliser à des coûts raisonnables des profilés de support d'un poids réduit ayant une très bonne rectitude. De plus, éventuel défaut de rectitude peut être aisément corrigé par une opération de dressage mécanique qui est possible grâce aux caractéristiques mécaniques spécifiques des alliages métalliques. Cette rectitude permet alors d'utiliser le profilé de support en aluminium comme base de référence pour y fixer par rivetage la tringle porte-lisse en la rendant rectiligne. En effet, cette tringle porte-lisse n'est pas forcément linéaire à l'état libre du fait de sa faible rigidité.To this day, the support profiles are mainly made of aluminum alloy and the support rods are usually made of stainless steel and attached to the support profiles by means of rivets to obtain a rigid assembly. The use of aluminum alloy support profiles obtained by extrusion or spinning is an interesting solution because it makes it possible to achieve at reasonable costs support profiles of reduced weight with very good straightness. In addition, any lack of straightness can be easily corrected by a mechanical dressing operation that is possible thanks to the specific mechanical characteristics of metal alloys. This straightness then makes it possible to use the aluminum support profile as a reference base for fastening it by riveting the smooth support rod by making it rectilinear. Indeed, this smooth support rod is not necessarily linear in the free state because of its low rigidity.

Néanmoins, ce type de cadre de lisse largement répandu présente des performances modestes en terme de rigidité et une mauvaise tenue à la fatigue mécanique. Ces inconvénients se sont amplifiés avec l'augmentation des vitesses de tissage. De plus, l'assemblage par rivets des tringles porte-lisse sur les profilés de support génère des concentrations de contraintes néfastes pouvant occasionner des ruptures prématurées des cadres de lisse face aux fortes sollicitations dynamiques altematives.Nevertheless, this type of widespread stringer frame has modest performance in terms of stiffness and poor resistance to mechanical fatigue. These disadvantages are amplified with increasing weaving speeds. In addition, the assembly by rivets of the smooth-carrying rods on the support profiles generates harmful stress concentrations that may lead to premature fractures of the frame frames facing the high dynamic alternating stresses.

On a cherché à résoudre ce problème en incorporant dans les profilés de support des raidisseurs en fibres de carbone et en assemblant la tringle porte-lisse par emboîtement dans une rainure prévue sur chaque profilé de support, comme décrit dans la publication US-A-4,913,194. Néanmoins, ce type de réalisation est complexe et très coûteux compte tenu du nombre et de la diversité des pièces à assembler.This problem has been solved by incorporating into the support profiles carbon fiber stiffeners and assembling the support rod by interlocking in a groove provided on each support profile, as described. in US-A-4,913,194. Nevertheless, this type of embodiment is complex and very expensive given the number and diversity of parts to be assembled.

Une autre solution consiste à réaliser les profilés de support entièrement en matériaux composites, par exemple par pultrusion de résines thermodures incorporant des fibres de carbone ou des fibres de verre, et à rapporter par collage les tringles porte-lisse. Les matériaux composites présentent de nombreux avantages :

  • en terme de légèreté, réduisant considérablement la masse et l'inertie du cadre et améliorant ainsi son comportement dynamique, et
  • en terme de rigidité en traction et en compression, augmentant sa tenue à la fatigue mécanique bien au-delà de celle des alliages d'aluminium.
Néanmoins, les performances en terme de rectitude sont relativement mauvaises. A titre d'exemple, la flèche moyenne d'un profilé de ce type est d'environ 1 mm par mètre de longueur. Sachant que dans le domaine des cadres de lisse, les profilés de support peuvent mesurer jusqu'à 4,2 mètres, la flèche possible peut atteindre environ 4 mm. De plus, ces matériaux composites n'autorisent aucun redressage étant donné qu'il s'agit de résines thermodures donc très rigides et irréversibles. L'utilisation de ce type de profilés de support implique une sélection rigoureuse des profilés de support ayant une rectitude acceptable pour réaliser un cadre porte lisse conforme et, par conséquent, des coûts élevés compte tenu des rebus importants générés.Another solution consists in producing the support profiles made entirely of composite materials, for example by pultrusion of thermoset resins incorporating carbon fibers or glass fibers, and by gluing the smooth-carrying rods. Composite materials have many advantages:
  • in terms of lightness, considerably reducing the mass and the inertia of the frame and thus improving its dynamic behavior, and
  • in terms of stiffness in traction and compression, increasing its resistance to mechanical fatigue far beyond that of aluminum alloys.
Nevertheless, the performances in terms of straightness are relatively bad. For example, the average arrow of a profile of this type is about 1 mm per meter of length. Knowing that in the field of smooth frames, the support profiles can measure up to 4.2 meters, the possible deflection can reach about 4 mm. In addition, these composite materials do not allow straightening since they are thermoset resins therefore very rigid and irreversible. The use of this type of support profiles implies a rigorous selection of the support profiles having an acceptable straightness to achieve a compliant smooth door frame and, therefore, high costs given the significant rejects generated.

La présente invention vise à pallier ces inconvénients en proposant un procédé de fabrication d'une traverse pour cadre de lisse de machine à tisser ainsi qu'une traverse obtenue par ce procédé, permettant de réaliser à moindre coût et sans rebus une traverse combinant des caractéristiques de légèreté et de grande rigidité, et dont la tringle porte-lisse est placée sur le profilé de support dans une position précise parfaitement linéaire, cette position étant contrôlée et reproductible.The present invention aims at overcoming these disadvantages by proposing a method of manufacturing a crossbar for a weaving machine frame as well as a crossbar obtained by this method, making it possible to produce at a lower cost and without a rebate a cross-bar combining characteristics of lightness and high rigidity, and whose support rod is placed on the support profile in a perfectly linear precise position, this position being controlled and reproducible.

Dans ce but, l'invention concerne un procédé de fabrication du genre indiqué en préambule, caractérisé en ce que l'on utilise un gabarit rigide comportant au moins une première rainure rectiligne présentant une largeur sensiblement égale à celle de la tringle porte-lisse, on place la tringle porte-lisse dans ladite rainure pour la rendre rectiligne, on dépose un cordon de colle dans la zone de jonction, on positionne de manière prédéterminée et sans contrainte ledit profilé de support sur ledit gabarit et sur la tringle porte-lisse en écrasant ledit cordon de colle et on maintient l'ensemble profilé de support et tringle porte-lisse solidaire dudit gabarit au moins pendant le temps de prise de ladite colle.For this purpose, the invention relates to a method of manufacture of the kind indicated in the preamble, characterized in that a rigid jig is used comprising at least a first rectilinear groove having a width substantially equal to that of the smooth carrier rod, the guide rod is placed in said groove to make it rectilinear, a bead of glue is deposited in the junction zone, said support profile is positioned in a predetermined and unconstrained manner on said jig and on the carrier rod in crushing said adhesive bead and maintaining the support profile assembly and support rod secured to said template at least during the setting time of said adhesive.

D'une manière préférentielle, le gabarit et le profilé de support comportent des formes complémentaires d'emboîtement agencées pour positionner avec précision le profilé de support par rapport à la tringle porte-lisse.Preferably, the template and the support profile comprise complementary interlocking shapes arranged to accurately position the support profile relative to the smooth support rod.

Dans le cas où le profilé de support présente une section sensiblement rectangulaire, le gabarit comporte une seconde rainure dont au moins les extrémités sont rectilignes et parallèles à la première rainure, cette seconde rainure étant agencée pour recevoir ladite section sensiblement rectangulaire du profilé de support.In the case where the support profile has a substantially rectangular section, the template comprises a second groove, at least the ends of which are rectilinear and parallel to the first groove, this second groove being arranged to receive said substantially rectangular section of the support profile.

Le profilé de support peut être non rectiligne et la seconde rainure du gabarit peut présenter une largeur supérieure à la largeur totale de la section rectangulaire du profilé de support. Dans ce cas, on peut utiliser des organes de positionnement agencés pour être montés aux extrémités du profilé de support, ces organes de positionnement présentant une largeur sensiblement égale à celle des extrémités de la seconde rainure.The support profile may be non-rectilinear and the second groove of the template may have a width greater than the total width of the rectangular section of the support profile. In this case, it is possible to use positioning members arranged to be mounted at the ends of the support profile, these positioning members having a width substantially equal to that of the ends of the second groove.

Pour fabriquer un nombre n de traverses, on utilise avantageusement un nombre n de gabarits, chaque gabarit étant superposé sur le précédent après avoir mis en place la tringle porte-lisse, le cordon de colle et le profilé de support correspondants, et on maintient l'ensemble n profilés de support et n tringles porte-lisse solidaires des n gabarits superposés au moins pendant le temps de prise de la colle.To manufacture a number n of crosspieces, a number n of templates is advantageously used, each template being superimposed on the previous one after having put in place the support rod, the adhesive bead and the corresponding support profile, and maintains the assembly n support profiles and n support rails smooth solidarity n n superimposed templates at least during the setting time of the glue.

Dans ce but, l'invention concerne également une traverse du genre indiqué en préambule, caractérisée en ce que le profilé de support est rigide, en ce que la tringle porte-lisse est non rigide et en ce que la tringle porte-lisse est fixée solidairement audit profilé de support par collage dans une position rectiligne obtenue au moyen d'un gabarit agencé pour maintenir ladite tringle porte-lisse par rapport audit profilé de support dans cette position rectiligne au moins pendant le temps de prise de ladite colle.For this purpose, the invention also relates to a cross member of the kind indicated in the preamble, characterized in that the support profile is rigid, in that the smooth carrier rod is non-rigid and in that the carrier rod is fixed solidarily to said support profile by gluing in a rectilinear position obtained by means of a template arranged to maintain said smooth-carrying rod relative to said support profile in this rectilinear position at least during the setting time of said glue.

Le profilé de support peut être un profilé non rectiligne, réalisé en matériaux composites et obtenu par un procédé choisi dans le groupe comprenant au moins l'extrusion, la pultrusion.The support profile may be a non-rectilinear profile, made of composite materials and obtained by a process selected from the group comprising at least extrusion, pultrusion.

Ce profilé de support peut présenter une section sensiblement rectangulaire prolongée par une section droite destinée à recevoir la tringle porte-lisse. Il peut aussi présenter une section sensiblement rectangulaire dans laquelle est ménagée une rainure longitudinale destinée à recevoir la tringle porte-lisse. Cette tringle porte-lisse peut être métallique et présenter une section choisie dans le groupe comportant au moins une forme en T, une forme en J.This support profile may have a substantially rectangular section extended by a cross section for receiving the smooth-carrying rod. It may also have a substantially rectangular section in which is formed a longitudinal groove for receiving the rod-holder. This smooth support rod may be metallic and have a section selected from the group comprising at least one T-shaped, a J-shaped.

La présente invention et ses avantages apparaîtront mieux dans la description suivante d'un exemple de réalisation, en référence aux dessins annexés, dans lesquels:

  • la figure 1 est une vue en perspective d'un cadre de lisse traditionnel pour machine à tisser,
  • les figures 2A et 2B sont des vues de côté d'une traverse selon l'invention respectivement avant et après assemblage,
  • les figures 3A à D sont des vues partielles en perspective de quatre étapes du procédé de fabrication selon l'invention pour réaliser une traverse,
  • la figure 4 est une vue partielle en perspective d'une étape du procédé de fabrication selon l'invention pour réaliser un nombre n de traverses, et
  • les figures 5A et 5B sont des vues de côté d'une variante de réalisation d'une traverse selon l'invention respectivement avant et après assemblage.
The present invention and its advantages will become more apparent in the following description of an exemplary embodiment, with reference to the appended drawings, in which:
  • FIG. 1 is a perspective view of a traditional stringer frame for a weaving machine,
  • FIGS. 2A and 2B are side views of a cross member according to the invention respectively before and after assembly,
  • FIGS. 3A to D are partial perspective views of four steps of the manufacturing method according to the invention for producing a cross member,
  • FIG. 4 is a partial perspective view of a step of the manufacturing method according to the invention for producing a number n of sleepers, and
  • Figures 5A and 5B are side views of an alternative embodiment of a cross member according to the invention respectively before and after assembly.

En référence aux figures, l'invention concerne un procédé de fabrication d'une traverse 2, 2' pour cadre de lisse 1 de machine à tisser et une traverse 2, 2' obtenue par ce procédé.With reference to the figures, the invention relates to a method of manufacturing a crossbar 2, 2 'for a frame of loom 1 of a weaving machine and a crossbar 2, 2' obtained by this method.

Un exemple de cadre de lisse 1 traditionnel pour machine à tisser est représenté à la figure 1. Il comporte, de manière connue, deux traverses 2 sensiblement parallèles assemblées latéralement par deux montants 2". Chaque traverse 2 est formée d'un profilé de support 3 et d'une tringle porte-lisse 4. Les tringles porte-lisse 4 ont pour fonction de porter et de guider un ensemble de lisses de tissage 5, dont deux seules sont représentées, par leurs extrémités 50 en forme de boucle, en respectant un jeu de fonctionnement J. Au centre, chaque lisse de tissage 5 porte un oeillet 51 pour le passage d'un fil de chaîne 6. Ces lisses de tissage 5 sont généralement réalisées dans une matière métallique trempée, par exemple en acier inoxydable, pour résister aux contraintes mécaniques. Dans le but de garantir ce jeu de fonctionnement J sur toute la longueur de cadre de lisse 1, les tringles porte-lisse 4 doivent être parfaitement linéaires et parallèles entre-elles en respectant une précision d'environ + ou - 0,3 mm.An example of a traditional stringer frame 1 for a weaving machine is shown in FIG. 1. It comprises, in known manner, two substantially parallel struts 2 laterally assembled by two uprights 2 ", each strut 2 is formed of a support profile. 3 and a smooth carrier rod 4. The function of the smooth carrier rods 4 is to carry and guide a set of weaving rails 5, only two of which are represented by their ends 50 in the shape of a loop, respecting 1 in the center, each weaving loom 5 carries an eyelet 51 for the passage of a warp 6. These weaving laces 5 are generally made of a hardened metal material, for example stainless steel, for In order to guarantee this operating clearance J over the entire length of the stringer frame 1, the struts 4 must be perfectly linear and parallel to each other. respecting an accuracy of approximately + or - 0.3 mm.

En référence aux figures 2A et 2B, le profilé de support 3 comporte une section sensiblement rectangulaire 30 prolongée par une section droite 31 apte à recevoir sur la tringle porte-lisse 4 le long d'une zone de jonction 40 formée d'une surface plane. Cette tringle porte-lisse 4 peut présenter une section en T couché 4a ou en J 4b selon la forme des boucles 50 des lisses de tissage 5.With reference to FIGS. 2A and 2B, the support profile 3 comprises a substantially rectangular section 30 extended by a straight section 31 adapted to receive on the smooth support rod 4 along a junction zone 40 formed of a flat surface . This smooth support rod 4 may have a coated T section 4a or J 4b according to the shape of the loops 50 of the weaving rails 5.

Les figures 5A et 5B illustrent une variante de réalisation d'une traverse 2', dans laquelle le profilé de support 3'comporte une section sensiblement rectangulaire 30 dans laquelle est ménagée une rainure longitudinale 33 apte à recevoir la tringle porte-lisse 4' le long d'une zone de jonction 40' formée au moins de deux surfaces planes parallèles. La rainure longitudinale 33 peut être orientée parallèlement au plan du profilé de support 3', conformément à l'exemple illustré, ou perpendiculairement selon la forme de la tringle porte-lisse 4'. Cette tringle porte-lisse 4' peut présenter une section en T couché prolongé d'une patte de jonction 4'a, en J retourné 4 b ou en T inversé 4'c selon la forme des boucles 50 des lisses de tissage 5.FIGS. 5A and 5B illustrate an alternative embodiment of a cross member 2 ', in which the support profile 3' has a substantially rectangular section 30 in which is formed a longitudinal groove 33 able to receive the smooth support rod 4 'on the along a junction area 40 'formed of at least two parallel flat surfaces. The longitudinal groove 33 may be oriented parallel to the plane of the support profile 3 ', according to the example shown, or perpendicular to the shape of the smooth support rod 4'. This smooth support rod 4 'may have a prolonged T-section coated with a connecting tab 4'a, inverted J 4b or inverted T 4'c depending on the shape of the loops 50 of the weaving rails 5.

Dans tous les cas, la section sensiblement rectangulaire 30 du profilé de support 3,3' comporte un évidement central 32 qui a l'avantage de réduire sa masse et son coût matière. Ce profilé de support 3, 3' peut avoir d'autres sections par exemple en I.In all cases, the substantially rectangular section 30 of the support profile 3,3 'has a central recess 32 which has the advantage of reducing its mass and material cost. This support profile 3, 3 'may have other sections for example in I.

En référence aux figures 3A à D, le procédé de fabrication selon l'invention d'une traverse 2,2' comporte au moins les étapes suivantes :

  1. 1. on utilise un gabarit 7 rigide comportant au moins une première rainure 70 rectiligne présentant une largeur sensiblement égale à celle de la tringle porte-lisse 4,4',
  2. 2. on place la tringle porte-lisse 4, 4' dans la rainure 70 (cf. fig. 3A),
  3. 3. on dépose un cordon de colle sur la zone de jonction 40, 40' par exemple au moyen d'une buse 8 (cf. fig. 3B),
  4. 4. on positionne de manière prédéterminée le profilé de support 3, 3'sur le gabarit 7 et sur la tringle porte-lisse 4, 4' en écrasant le cordon de colle, et
  5. 5. on maintient l'ensemble profilé de support 3, 3' et tringle porte-lisse 4, 4'solidaire du gabarit 7 au moins pendant le temps de prise de la colle. Ce temps de prise peut correspondre au temps de polymérisation de la colle. Selon le type de colle, on peut déposer la colle directement sur la tringle porte-lisse 4, 4' et/ou directement sur le profilé de support 3, 3'.
With reference to FIGS. 3A to D, the manufacturing method according to the invention of a cross member 2,2 'comprises at least the following steps:
  1. 1. a rigid jig 7 is used comprising at least a first rectilinear groove 70 having a width substantially equal to that of the smooth-carrying rod 4,4 ',
  2. 2. Place the smooth rod 4, 4 'in the groove 70 (see Fig. 3A),
  3. 3. a bead of adhesive is deposited on the joining zone 40, 40 'for example by means of a nozzle 8 (see FIG.
  4. 4. the support profile 3, 3 'on the jig 7 and the smooth support rod 4, 4' are positioned in predetermined manner by crushing the bead of glue, and
  5. 5. the supporting profile assembly 3, 3 'and the support rod 4, 4' of the template 7 are held at least during the setting time of the adhesive. This setting time may correspond to the polymerization time of the glue. Depending on the type of glue, the glue can be deposited directly on the support rod 4, 4 'and / or directly on the support profile 3, 3'.

Le gabarit 7 et le profilé de support 3, 3' comportent des formes complémentaires d'emboîtement permettant le positionnement précis du profilé de support 3, 3' par rapport à la tringle porte-lisse 4, 4'. Dans les exemples représentés, le gabarit 7 comporte une seconde rainure 71 dont au moins les extrémités sont rectilignes et parallèles à la première rainure 70. Cette seconde rainure 71 présente une largeur supérieure à la largeur totale de la section sensiblement rectangulaire 30 du profilé de support 3, 3'. On utilise, dans cet exemple de réalisation, des organes de positionnement 9 agencés pour être montés aux extrémités du profilé de support 3, 3', ces organes de positionnement 9 présentant une largeur sensiblement égale à celle des extrémités de la seconde rainure 71. Dans cet exemple, les formes complémentaires d'emboîtement sont constituées par les organes de positionnement 9 et les extrémités de la seconde rainure 71. On peut bien entendu prévoir d'autres formes équivalentes.The jig 7 and the support profile 3, 3 'comprise complementary interlocking shapes allowing the precise positioning of the support profile 3, 3' with respect to the smooth support rod 4, 4 '. In the examples shown, the template 7 comprises a second groove 71, at least the ends of which are rectilinear and parallel to the first groove 70. This second groove 71 has a width greater than the total width of the substantially rectangular section 30 of the support profile. 3, 3 '. In this embodiment, use is made of positioning members 9 arranged to be mounted at the ends of the support profile 3, 3 ', these positioning members 9 having a width substantially equal to that of the ends of the second groove 71. in this example, the complementary interlocking forms are constituted by the positioning members 9 and the ends of the second groove 71. It is of course possible to provide other equivalent forms.

Ces organes de positionnement 9 sont constitués en référence à la figure 3C d'une plaque 90 en forme de T, la jambe du T formant une partie mâle apte à s'emboîter dans l'évidement central 32 du profilé de support 3, 3' et la barre du T ayant une largeur égale à celle des extrémités de la rainure 71 du gabarit 7. Le procédé de fabrication comporte alors une étape dans laquelle on place des organes de positionnement 9 dans les extrémités du profilé de support 3,3' (cf. fig. 3C) avant de placer ledit profilé de support 3, 3' dans le gabarit 7.These positioning members 9 are constituted with reference to FIG. 3C of a T-shaped plate 90, the leg of the T forming a male part able to fit into the central recess 32 of the support profile 3, 3 ' and the T bar having a width equal to that of the ends of the groove 71 of the template 7. The manufacturing method then comprises a step in which positioning members 9 are placed in the ends of the support profile 3,3 '( see Fig. 3C) before placing said support profile 3, 3 'in the jig 7.

L'utilisation de ces organes de positionnement 9, ou de tout autre moyen équivalent, permet de garantir un positionnement précis des extrémités du profilé de support 3, 3' par rapport à la tringle porte-lisse 4, 4' quelle que soit la rectitude du profilé de support 3, 3'. Ainsi l'intervalle I entre l'axe A passant par le centre de l'évidement central 32 aux extrémités du profilé de support 3, 3' et l'axe central B de la tringle porte-lisse 4, 4' (cf. fig. 1) est précis et constant sur l'ensemble des traverses 2, 2' fabriquées selon ce procédé, quelle que soit la rectitude du profilé de support 3, 3'.The use of these positioning members 9, or any other equivalent means, ensures a precise positioning of the ends of the support profile 3, 3 'relative to the smooth support rod 4, 4' regardless of the straightness of the support profile 3, 3 '. Thus the gap I between the axis A passing through the center of the central recess 32 at the ends of the support profile 3, 3 'and the central axis B of the support rod 4, 4' (see fig. 1) is precise and constant on all the sleepers 2, 2 'manufactured according to this method, regardless of the straightness of the support profile 3, 3'.

Dans le but de fabriquer un nombre n de traverses 2, 2', on peut utiliser un nombre n de gabarit 7 identiques que l'on superpose comme illustré à la figure 4. Dans ce cas, les gabarits 7 ont une partie arrière plus large que leur partie avant formant respectivement une zone d'emboîtement femelle 72 et une zone d'emboîtement mâle 73. La partie arrière comporte deux rebords longitudinaux 74 délimitant la zone d'emboîtement femelle 72, l'intervalle entre ces deux rebords longitudinaux 74 correspondant à la largeur de la zone d'emboîtement mâle 73.In order to manufacture a number n of crosspieces 2, 2 ', it is possible to use a number n of identical template 7 which is superposed as illustrated in FIG. 4. In this case, the templates 7 have a wider rear part. that their front part respectively forming a female interlocking zone 72 and a male interlocking zone 73. The rear part comprises two longitudinal flanges 74 delimiting the female interlocking zone 72, the interval between these two longitudinal flanges 74 corresponding to the width of the male interlocking area 73.

Ce procédé de fabrication permet donc de réaliser une traverse 2, 2' dans laquelle la tringle porte-lisse 4, 4' est fixée solidairement au profilé de support 3, 3' par collage dans une position rectiligne obtenue au moyen du gabarit 7 agencé pour maintenir cette tringle porte-lisse 4, 4' par rapport au profilé de support 3, 3' dans cette position au moins pendant le temps de prise de la colle.This manufacturing method therefore makes it possible to produce a crossmember 2, 2 'in which the smooth support rod 4, 4' is fixed integrally to the support profile 3, 3 'by gluing in a rectilinear position obtained by means of the jig 7 arranged for maintain this smooth rod 4, 4 'relative to the support profile 3, 3' in this position at least during the setting time of the glue.

Ce procédé de fabrication est particulièrement avantageux quand on utilise un profilé de support 3, 3' qui est réalisé dans une matière rigide mais qui n'a pas forcément une géométrie rectiligne ainsi qu'une tringle porte-lisse 4, 4' qui n'a pas forcément une géométrie rectiligne à l'état libre mais qui est réalisée dans une matière non rigide autorisant un redressage. Cette différence de rigidité est obtenue par le choix des matières mais aussi par les différences de section, la section de la tringle porte-lisse 4, 4' étant nettement inférieure à celle du profilé de support 3, 3'. Avant d'assembler solidairement le profilé de support 3, 3' à la tringle porte-lisse 4, 4', cette tringle porte-lisse 4, 4', qui constitue la partie fonctionnelle de la traverse 2, 2', est figée dans une position rectiligne imposée par le gabarit 7. Le profilé de support 3, 3' est ensuite assemblé à cette tringle porte-lisse 4, 4' sans subir de déformation sensible dans le plan dudit profilé. Après assemblage, lors du retrait de la traverse 2, 2' obtenue du gabarit 7, la tringle porte-lisse 4, 4'reste dans sa position rectiligne compte tenu de la grande différence de rigidité entre le profilé de support 3, 3' et la tringle porte-lisse 4, 4'. En effet, si la tringle porte-lisse 4,4' tend à reprendre sa forme d'origine, le profilé de support 3, 3' étant beaucoup plus rigide, s'oppose à toute déformation et fige la tringle porte-lisse 4, 4' dans la position imposée par le gabarit 7.This manufacturing method is particularly advantageous when using a support profile 3, 3 'which is made of a rigid material but which does not necessarily have a rectilinear geometry and a smooth support rod 4, 4' which does not It does not necessarily have a rectilinear geometry in the free state but which is made in a non-rigid material allowing straightening. This difference of rigidity is obtained by the choice of the materials but also by the differences of section, the section of the rail-smooth 4, 4 'being significantly lower than that of the support profile 3, 3'. Before solidly assembling the support profile 3, 3 'to the smooth support rod 4, 4', this smooth support rod 4, 4 ', which constitutes the functional part of the crossbar 2, 2', is fixed in a rectilinear position imposed by the template 7. The support profile 3, 3 'is then assembled to this smooth support rod 4, 4' without undergoing significant deformation in the plane of said profile. After assembly, during removal of the crossbar 2, 2 'obtained from the template 7, the support rod 4, 4'restete in its rectilinear position given the large difference in rigidity between the support profile 3, 3' and the smooth rod 4, 4 '. Indeed, if the smooth support rod 4,4 'tends to return to its original shape, the support profile 3, 3' being much more rigid, opposes any deformation and freezes the smooth rod 4, 4 'in the position imposed by the template 7.

Ce procédé de fabrication est donc particulièrement adapté aux profilés de support 3, 3' réalisés en matériaux composites et obtenus selon un procédé continu tel que l'extrusion ou la pultrusion. Ces matériaux composites sont par exemple des résines thermodures à base de fibres de carbone, de verre ou d'autres fibres. Ils ont l'avantage de conférer au profilé de support 3, 3' une très grande rigidité augmentant sa tenue mécanique à la fatigue tout en réduisant considérablement son poids. Le défaut de rectitude lié à l'utilisation de ces matériaux composites n'est plus un inconvénient grâce à la combinaison du gabarit 7 et des organes de positionnement 9 ou de tout autre moyen équivalent. Toutefois, ce procédé de fabrication peut également être avantageux pour des profilés de support 3, 3' réalisés de manière traditionnelle en alliage d'aluminium afin d'éliminer l'étape préalable de redressage. Dans ce cas, le collage peut être remplacé par du rivetage ou tout moyen équivalent.This manufacturing method is therefore particularly suitable for support profiles 3, 3 'made of composite materials and obtained by a continuous process such as extrusion or pultrusion. These composite materials are, for example, thermoset resins based on carbon fibers, glass or other fibers. They have the advantage of giving the support profile 3, 3 'a very high rigidity increasing its mechanical resistance to fatigue while significantly reducing its weight. The lack of straightness related to the use of these composite materials is no longer a drawback thanks to the combination of the template 7 and the positioning members 9 or any other equivalent means. However, this manufacturing method can also be advantageous for support profiles 3, 3 'made in the traditional manner of aluminum alloy in order to eliminate the prior straightening step. In this case, the bonding may be replaced by riveting or any equivalent means.

Claims (15)

  1. A process for manufacturing a slat (2, 2') for the heddle frame (1) of a loom, said slat (2, 2') comprising at least one support section (3, 3') and at least one heddle slide bar (4, 4') integral with said support section (3, 3') along a junction zone (40, 40'), characterised in that a rigid template (7) comprising at least a first rectilinear groove (70) having a width substantially equal to that of the heddle slide bar (4, 4') is used, the heddle slide bar (4, 4') is placed in said groove (70) to make it rectilinear, a bead of glue is laid in the junction zone (40, 40'), said support section (3, 3') is positioned in predetermined manner and without stress on said template (7) and on the heddle slide bar (4, 4'), flattening said bead of glue, and the assembly consisting of support section (3, 3') and heddle slide bar (4, 4') is kept integral with said template (7) at least during the setting time of said glue.
  2. A process according to Claim 1, characterised in that said template (7) and said support section (3, 3') comprise complementary engagement forms arranged so as to position the support section (3, 3') accurately relative to the heddle slide bar (4, 4').
  3. A process according to Claim 2, characterised in that the support section (3, 3') has at least a substantially rectangular section (30), in that the template (7) comprises a second groove (71) at least the ends of which are rectilinear and parallel to the first groove (70), this second groove (71) being arranged to receive said substantially rectangular section (30) of the support section (3, 3').
  4. A process according to Claim 3, characterised in that the support section (3, 3') is non-rectilinear, the second groove (71) of said template (7) having a width greater than the total width of the substantially rectangular section (30) of said support section (3, 3'), in that positioning elements (9) arranged to be mounted at the ends of said support section (3, 3') are used, these positioning elements (9) having a width substantially equal to that of the ends of said second groove (71).
  5. A process according to Claim 1, characterised in that, in order to manufacture a number n of slats (2, 2'), a number n of templates (7) is used, each template (7) being superposed on the preceding one once the corresponding heddle slide bar (4, 4'), bead of glue and support section (3, 3') have been put in position, and in that the assembly consisting of n support sections (3, 3') and n heddle slide bars (4, 4') is kept integral with the superposed n templates (7) at least during the setting time of said glue.
  6. A slat (2, 2') for the heddle frame (1) of a loom, obtained by the manufacturing process according to Claim 1, said slat (2, 2') comprising at least one support section (3, 3') and at least one heddle slide bar (4, 4') integral with said support section (3, 3') along a junction zone (40, 40'), characterised in that the support section (3, 3') is rigid, in that the heddle slide bar (4, 4') is non-rigid and in that the heddle slide bar (4, 4') is fixed integrally to said support section (3, 3') by gluing in a rectilinear position obtained by means of a template (7) arranged to hold said heddle slide bar (4, 4') relative to said support section (3, 3') in this rectilinear position at least during the setting time of said glue.
  7. A slat according to Claim 6, characterised in that the support section (3, 3') is a non-rectilinear section.
  8. A slat according to Claim 7, characterised in that the support section (3, 3') is made of composite materials.
  9. A slat according to Claim 8, characterised in that the support section (3, 3') is obtained by a process selected from the group comprising at least extrusion and pultrusion.
  10. A slat according to Claim 6, characterised in that the support section (3) has a substantially rectangular section (30) extended by a substantially straight section (31) intended to receive said heddle slide bar (4).
  11. A slat according to Claim 6, characterised in that the support section (3') has a substantially rectangular section (30) and comprises a longitudinal groove (33) intended to receive said heddle slide bar (4').
  12. A slat according to Claim 6, characterised in that the heddle slide bar (4, 4') is metallic.
  13. A slat according to Claim 6, characterised in that the heddle slide bar (4, 4') has a section selected from the group comprising at least a T-shaped form and a J-shaped form.
  14. A template for the manufacture of a slat (2, 2') according to one of Claims 6 to 13, characterised in that it comprises:
    - at least a first rectilinear groove (70) having a width substantially equal to that of the heddle slide bar (4, 4') of the slat and in which said bar may be placed, and
    - a second groove (71) for receiving the rectangular section (30) of the support section (3, 3') of the slat.
  15. A template according to Claim 14, characterised in that it comprises a female engagement zone (72) and a male engagement zone (73) with identical templates for their superposition.
EP03360003A 2002-01-25 2003-01-10 Method of fabricating a heddle frame slat for the heddle frame of a weaving machine and a heddle frame slat obtained by such method Expired - Lifetime EP1331293B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0200961A FR2835264B1 (en) 2002-01-25 2002-01-25 METHOD FOR MANUFACTURING A BUSHING FOR A WEAVING MACHINE SMOOTH FRAME AND A BUSHING OBTAINED BY SAID METHOD
FR0200961 2002-01-25

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EP1331293B1 true EP1331293B1 (en) 2006-03-22

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US (1) US6926042B2 (en)
EP (1) EP1331293B1 (en)
CN (1) CN1324180C (en)
AT (1) ATE321160T1 (en)
DE (2) DE60304145T2 (en)
FR (1) FR2835264B1 (en)

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DE102005029699B3 (en) * 2005-06-24 2007-02-08 Groz-Beckert Kg heald
DE102005029700B3 (en) * 2005-06-24 2006-10-12 Groz-Beckert Kg Side of heald frame for a loom has drive connection formed by a one-piece extension of the flat sides of a folded sheet metal part
EP1790761B8 (en) * 2005-11-23 2011-09-21 Promatech S.p.A. Cross-bar for heald carrying frames of weaving looms with improved attachment of the heald carrying plate
BE1017334A3 (en) * 2006-10-05 2008-06-03 Picanol Nv WEAVING FRAME WITH REINFORCEMENT PROFILE FOR A WEAVING MACHINE.
WO2016004610A1 (en) * 2014-07-10 2016-01-14 姚红丽 Improved textile loom
CN112935845A (en) * 2021-02-03 2021-06-11 上海拓璞数控科技股份有限公司 Composite material frame structure of gantry type multi-axis machining center and machining center
CN113737351A (en) * 2021-10-14 2021-12-03 西安康本材料有限公司 PAN fiber beating-up device

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CN1324180C (en) 2007-07-04
US20030140981A1 (en) 2003-07-31
ATE321160T1 (en) 2006-04-15
DE60304145T2 (en) 2006-12-21
EP1331293A1 (en) 2003-07-30
DE03360003T1 (en) 2004-04-15
DE60304145D1 (en) 2006-05-11
US6926042B2 (en) 2005-08-09
FR2835264A1 (en) 2003-08-01
CN1441101A (en) 2003-09-10
FR2835264B1 (en) 2004-05-21

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