EP1767676B1 - Method of producing a heddle, heddle of a shed forming device and loom incorporating such a heddle - Google Patents

Method of producing a heddle, heddle of a shed forming device and loom incorporating such a heddle Download PDF

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Publication number
EP1767676B1
EP1767676B1 EP06356115.3A EP06356115A EP1767676B1 EP 1767676 B1 EP1767676 B1 EP 1767676B1 EP 06356115 A EP06356115 A EP 06356115A EP 1767676 B1 EP1767676 B1 EP 1767676B1
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EP
European Patent Office
Prior art keywords
eyelet
tabs
edge
opening
heddle
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EP06356115.3A
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German (de)
French (fr)
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EP1767676A1 (en
Inventor
Michael Himmelstoss
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Staeubli Lyon SA
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Staeubli Lyon SA
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Publication of EP1767676A1 publication Critical patent/EP1767676A1/en
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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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/02—Healds
    • D03C9/024—Eyelets
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/02—Healds
    • 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

Definitions

  • the invention relates to a method of manufacturing a loom of a loom.
  • the invention also relates to a shedding mechanism rail on a loom and to a loom equipped with such a mechanism.
  • a leash In the field of crowd formation, it is known to equip a leash with a warp guide eyelet, the material and the shape of this lug being chosen so as not to injure the warp thread passing through the lug. central orifice defined by this eyelet. It is known to FR-A-2,267,403 to glue an eyelet in a longitudinal slot formed in a filiform element constituting a smooth. Some of the eyelets described are provided with an external peripheral groove intended to facilitate their retention in the opening of the filiform element. These eyelets have a greater thickness than that of the filiform element, which induces risks of attachment of warp threads during weaving. In addition, such a peripheral groove is difficult to achieve, especially in the high carbon steels used to make eyelets.
  • FR-A-2,776,676 provides, meanwhile, the realization of an oblong eyelet provided with a groove for receiving glue or welding material. In practice, such a throat is difficult to achieve.
  • EP-A-1,015,675 shows the use of an oblong eyelet forming a receiving groove of two strands constituting a filiform element, for the purpose of maintaining this eyelet, the eyelet being otherwise adhered to these strands.
  • the form imposed on the eyelet to allow its manufacture by forming is such that large openings remain respectively above and below the eyelet, these openings to be filled with glue. This is difficult to achieve and induces a high consumption of glue which substantially increases the cost price of the bar.
  • the invention more particularly intends to remedy by proposing a new method of manufacturing a loom of a loom which allows an effective fastening of an eyelet whose shape can be adapted to that of the loom. opening in which it is set up.
  • the projecting tabs allow effective attachment of the eyelet in the opening of the filiform element.
  • the offset of the two legs both along the edge of the eyelet or opening and perpendicular to the main faces of the eyelet or the filiform element corresponds to a "staggered" arrangement of the legs which allows them to each interact with one side of the filiform element or eyelet, while being able to be manufactured in a particularly simple manner, without resorting to complex machining ranges, which is all the more appreciable that the eyelets have very small dimensions.
  • the invention also relates to a rail that can be made by the above-mentioned method and, more specifically, to a shedding mechanism rail on a loom, the rail comprising a filamentary element, and an eyelet immobilized in a loom. Opening formed in this filiform element.
  • This smooth is characterized in that a first element, among the eyelet and the opening, carries, on an edge, at least two projecting lugs offset from each other along this edge and perpendicular to the faces. main part of this first element, while part of the edge of the second element is engaged with these tabs.
  • Such a smooth is more economical to manufacture than the smooth of the state of the art, while it ensures as efficient guiding warp, without risk of injury.
  • the invention relates to a loom equipped with a shedding mechanism comprising at least one rail as mentioned above.
  • the loom M represented at figure 1 is equipped with a Jacquard mechanism 2 which controls several arches 4 whose lower end is associated with several cords 6.
  • the lower end 6a of each bead 6 is connected to the upper end 8a of a rail 8, each rail 8 being provided with an eyelet 9 for the passage of a warp thread 10 and subjected to the action of a return spring 12 fixed to the frame 14 of the loom by means of a rod 16.
  • Smooth 8 is formed of a filamentary element 81 which is initially in the form of a stainless steel circular section wire. This wire is crushed to have a flattened cross section. In its central part, the element 81 is separated into two branches 82 and 83 between which is defined an opening 84 for receiving the eyelet 9.
  • the eyelet 9 is obtained by cutting a strip of metal, preferably a carbon steel strip. It defines a hole 91 for passing a warp thread 10.
  • X 91 is the central axis of the orifice 91, this axis being perpendicular to the main faces 92 and 93 of the eyelet 9, that is to say to say to its faces of the most important areas.
  • the eyelet 9 is oblong in shape and its outer edge 94 is generally oval or in the form of a flattened ellipse.
  • the edge 94 is equipped with eight lugs 95, four of which, bearing the reference 95a, have one of their sides flush with the surface 92, while the other four lugs, bearing the reference 95b, have one of their sides flush with the surface 93.
  • the tabs 95a and 95b protrude from the edge 94 and are arranged in pairs along the edge 94, each pair comprising a tab 95a and a tab 95b, these tabs being laterally offset from one another along from the edge 94.
  • the median plane of the eyelet 9 that is to say a plane parallel to the faces 92 and 93 and equidistant thereof.
  • the legs 95a and 95b are distributed on either side of this plane.
  • the tabs 95a and 95b of the same pair of tabs are offset, on either side of this plane, in a direction D 9 parallel to the X axis 91 .
  • the tabs 95a and 95b are arranged "staggered" on either side of the plane P 9 .
  • the tabs 95a and 95b of the same pair are offset along the edge 94 by a non-zero distance d and, parallel to the direction D 9 , by a distance between the centers of the tabs 95a and 95b. also non-zero.
  • the edge 85 is thinned, as is apparent from the Figures 7 to 10 .
  • the element 81 is shaped to produce the heddle 8
  • the latter 8 is stamped on a length corresponding to the largest dimension of the opening 84 to form, from each of its longer sides or main faces.
  • a slot 88 is created in the bottom thereof as shown in FIG. figure 9 , this slot joining the deepest parts of housing 86a and 87a.
  • the branches 82 and 83 are created which can then be separated from each other, in the direction of the arrows F 2 to figures 9 and 10 , to reach the position of the figure 10 where the branches 82 and 83 define between them the opening 84 with transverse dimensions greater than the bulk of the eyelet 10 in the plane visible at the figure 4 .
  • the edge 85 forms, over its entire length, a nose 85a calibrated on either side of which are formed two shoulders 85b of depth p 1 .
  • the nose 85a has a width l 85 , taken parallel to the axis X 91 , less than the thickness e 81 of the element 81 and at the distance of.
  • glue is applied in the openings 84a which remain on both sides of the eyelet 9.
  • the glue spreads by capillarity at least at least part of the interface between the This glue can be of any known type and, in particular, a one-component epoxy glue with ultraviolet ray curing or an ultraviolet-cured anaerobic glue.
  • each of the lugs 95 is denoted e 95 , this thickness being slightly less than the depth p 1 of the housings 86a and 87a.
  • the total thickness e 9 of the eyelet 9 is chosen substantially equal to the thickness e 81 .
  • the positioning of the tabs 95a and 95b, which are offset relative to each other along the edge 94, allows for these tabs by stamping of the steel strip in which the eyelet 9 is cut.
  • the eyelet can be achieved by cold forging. Using stamping or forging to create the legs 95 avoids the need for machining operations that would be very expensive and difficult to implement given the size of the eyelet 9 whose length is in practice, less than 20 mm, preferably 10 mm.
  • the method of manufacturing eyelets 9 allows very high production rates because the different operations implemented can be performed on the same machine, with several workstations, the formatting tools all having displacements perpendicular to the plane P 9 .
  • the tabs 95a and 95b are flush with the lateral faces of the filiform element 81.
  • nut 9 can be immobilized by a clamping force F 3 due to the branches 82 and 83 of the element 81 and being bonded, this in order to obtain additional anchoring.
  • the edge 94 of the eyelet 9 may be provided with two tabs 95a and 95b which form a pair of lugs 95 shifted as in the first embodiment.
  • the tab 95a is flush with a main face 92 of the eyelet 9, while the tab 95b is flush with the opposite main face 93.
  • the edge 85 of the branch 82 of the filiform element 81 is provided with two protruding lugs 95 ', namely a lug 95'a flush with the main face 86 of the branch 82 and a lug 95' flush with the opposite side 87 of this branch.
  • the tabs 95 ' are offset from each other along the edge 85 by a distance d which is identical to the distance d of offset of the tabs 95 relative to one another along the edge 94.
  • the offset direction of the tabs 95 'perpendicular to the faces 86 and 87 is opposite to that of the tabs 95.
  • edges 94 and 85 In the portions of the edges 94 and 85 without legs, these edges are rectilinear and perpendicular to the main faces 86 and 87, 92 and 93 of the elements 9 and 81, as shown in FIG. figure 12C .
  • the tabs 95a, 95b, 95'a and 95'b may be beveled, that is to say present a surface inclined at approximately 45 ° with respect to the main faces 86, 87, 92 and 93 of the elements 82 and 9, being offset perpendicularly to these faces, a distance of, along the edges 85 and 94.
  • the locking of the eyelet 9 in the opening 84 obtained thanks to the elastic nature of the branches 82 and 83, is very effective, the bonding of the eyelet in this opening can to be deleted.
  • the invention has been shown in the first two embodiments with an eyelet and an opening whose edge 94 or 85 is equipped with eight tabs 95.
  • the number of tabs 95 results from a design choice of the specialist who may provide to use only two of these legs or any number thereof, this number may be less than or greater than eight.
  • the specialist who may provide to use only two of these legs or any number thereof, this number may be less than or greater than eight.
  • they are advantageously distributed over the length of the edge 94 or 85, preferably in pairs.
  • the invention has been shown in its implementation for the manufacture of a loom Jacquard loom type. It also applies to the manufacture of a rail intended to be mounted on a loom frame, this frame being driven by a weave mechanism, for example a dobby or fundamental armor mechanics.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Sewing Machines And Sewing (AREA)

Description

L'invention a trait à un procédé de fabrication d'une lisse de métier à tisser. L'invention a également trait à une lisse de mécanisme de formation de la foule sur un métier à tisser, ainsi qu'à un métier à tisser équipé d'un tel mécanisme.The invention relates to a method of manufacturing a loom of a loom. The invention also relates to a shedding mechanism rail on a loom and to a loom equipped with such a mechanism.

Dans le domaine de la formation de la foule, il est connu d'équiper une lisse d'un oeillet de guidage de fil de chaîne, le matériau et la forme de cet oeillet étant choisis pour ne pas blesser le fil de chaîne traversant l'orifice central défini par cet oeillet. Il est connu de FR-A-2 267 403 de coller un oeillet dans une fente longitudinale formée dans un élément filiforme constitutif d'une lisse. Certains des oeillets décrits sont pourvus d'une gorge périphérique externe destinée à faciliter leur maintien dans l'ouverture de l'élément filiforme. Ces oeillets ont une épaisseur supérieure à celle de l'élément filiforme, ce qui induit des risques d'accrochage des fils de chaîne en cours de tissage. En outre, une telle gorge périphérique est difficile à réaliser, surtout dans les aciers à forte teneur en carbone utilisés pour fabriquer des oeillets. En particulier, si une telle gorge peut être envisagée avec des oeillets circulaires, elle n'est que très difficilement réalisable, exclusivement par usinage, dans un oeillet oblong. D'ailleurs, l'oeillet oblong de cet art antérieur est dépourvu de gorge, au point que son maintien par rapport à l'élément filiforme est quelque peu aléatoire.In the field of crowd formation, it is known to equip a leash with a warp guide eyelet, the material and the shape of this lug being chosen so as not to injure the warp thread passing through the lug. central orifice defined by this eyelet. It is known to FR-A-2,267,403 to glue an eyelet in a longitudinal slot formed in a filiform element constituting a smooth. Some of the eyelets described are provided with an external peripheral groove intended to facilitate their retention in the opening of the filiform element. These eyelets have a greater thickness than that of the filiform element, which induces risks of attachment of warp threads during weaving. In addition, such a peripheral groove is difficult to achieve, especially in the high carbon steels used to make eyelets. In particular, if such a groove can be envisaged with circular eyelets, it is only very difficult to achieve, exclusively by machining, in an oblong eyelet. Moreover, the oblong eyelet of this prior art is devoid of throat, so that its holding relative to the filiform element is somewhat random.

FR-A-2 776 676 prévoit, quant à lui, la réalisation d'un oeillet de forme oblongue pourvu d'une gorge destinée à recevoir de la colle ou un matériau de soudage. En pratique, une telle gorge est difficile à réaliser. FR-A-2,776,676 provides, meanwhile, the realization of an oblong eyelet provided with a groove for receiving glue or welding material. In practice, such a throat is difficult to achieve.

EP-A-1 015 675 montre l'utilisation d'un oeillet oblong formant une gorge de réception de deux brins constitutifs d'un élément filiforme, en vue du maintien de cet oeillet, l'oeillet étant par ailleurs collé sur ces brins. La forme imposée à l'oeillet pour permettre sa fabrication par formage est telle que des ajours importants demeurent respectivement au-dessus et au-dessous de l'oeillet, ces ajours devant être comblés par de la colle. Ceci est difficile à réaliser et induit une consommation élevée de colle qui augmente sensiblement le prix de revient de la lisse. EP-A-1,015,675 shows the use of an oblong eyelet forming a receiving groove of two strands constituting a filiform element, for the purpose of maintaining this eyelet, the eyelet being otherwise adhered to these strands. The form imposed on the eyelet to allow its manufacture by forming is such that large openings remain respectively above and below the eyelet, these openings to be filled with glue. This is difficult to achieve and induces a high consumption of glue which substantially increases the cost price of the bar.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un nouveau procédé de fabrication d'une lisse de métier à tisser qui permet un accrochage efficace d'un oeillet dont la forme peut être adaptée à celle de l'ouverture dans laquelle il est mis en place.It is to these drawbacks that the invention more particularly intends to remedy by proposing a new method of manufacturing a loom of a loom which allows an effective fastening of an eyelet whose shape can be adapted to that of the loom. opening in which it is set up.

Dans cet esprit, l'invention concerne un procédé de fabrication d'une lisse de métier à tisser, ce procédé comprenant des étapes consistant à :

  1. a) fabriquer un oeillet de guidage de fil de chaîne ;
  2. b) réaliser, dans un élément filiforme, une ouverture de réception de cet oeillet et
  3. c) mettre en place et immobiliser l'oeillet dans l'ouverture précitée.
In this spirit, the invention relates to a method of manufacturing a loom smooth, this method comprising the steps of:
  1. a) manufacturing a warp guide eyelet;
  2. b) forming, in a filiform element, an opening for receiving this eyelet and
  3. c) put in place and immobilize the eyelet in the aforementioned opening.

Ce procédé est caractérisé en ce que,

  • d) lors de la fabrication de l'oeillet ou de la réalisation de l'ouverture, on forme, sur un bord d'un premier élément, parmi l'oeillet et l'ouverture, au moins deux pattes en saillie décalées l'une de l'autre à la fois le long de ce bord et perpendiculairement aux faces principales de ce premier élément
  • e) lors de la mise en place de l'oeillet dans l'ouverture précitée, on amène en prise avec les pattes en saillie une partie du bord du second élément, parmi l'oeillet et l'ouverture.
This method is characterized in that,
  • d) during the manufacture of the eyelet or the making of the opening, forming, on an edge of a first element, among the eyelet and the opening, at least two projecting lugs offset one on the other both along this edge and perpendicular to the main faces of this first element
  • e) during the establishment of the eyelet in the aforementioned opening, is brought into engagement with the projecting tabs part of the edge of the second element, among the eyelet and the opening.

Grâce à l'invention, les pattes en saillie permettent un accrochage efficace de l'oeillet dans l'ouverture de l'élément filiforme. Le décalage des deux pattes à la fois le long du bord de l'oeillet ou de l'ouverture et perpendiculairement aux faces principales de l'oeillet ou de l'élément filiforme correspond à une disposition « en quinconce » des pattes qui leur permet d'interagir chacune avec un côté de l'élément filiforme ou de l'oeillet, tout en pouvant être fabriquées de façon particulièrement simple, sans avoir recours à des gammes d'usinage complexes, ce qui est d'autant plus appréciable que les oeillets ont des dimensions très réduites. Le fait de prévoir un accrochage de l'oeillet sur l'élément filiforme grâce aux deux pattes en saillie évite d'avoir recours à une gorge périphérique continue sur le bord de l'oeillet, ce qui autorise, pour ce bord, une forme qui peut être adaptée à la géométrie de l'ouverture créée dans l'élément filiforme.Thanks to the invention, the projecting tabs allow effective attachment of the eyelet in the opening of the filiform element. The offset of the two legs both along the edge of the eyelet or opening and perpendicular to the main faces of the eyelet or the filiform element corresponds to a "staggered" arrangement of the legs which allows them to each interact with one side of the filiform element or eyelet, while being able to be manufactured in a particularly simple manner, without resorting to complex machining ranges, which is all the more appreciable that the eyelets have very small dimensions. The fact of providing a hooking of the eyelet on the filiform element thanks to the two protruding tabs avoids resorting to a continuous peripheral groove on the edge of the eyelet, which allows, for this edge, a shape that can be adapted to the geometry of the opening created in the filiform element.

Selon des aspects avantageux mais non obligatoires de l'invention, un tel procédé peut incorporer une ou plusieurs des caractéristiques suivantes prises dans toutes combinaisons techniquement admissibles :

  • Il est prévu une étape d'amincissement et de calibrage du bord destiné à être amené en prise avec, ou engagé entre, les pattes en saillie, cette étape étant préalable à l'étape e). Cette étape d'amincissement et de calibrage est, de préférence, effectuée par matriçage localisé de l'élément filiforme, ce matriçage induisant, sur chaque côté de cet élément, la création d'un logement de réception d'une des pattes, cette étape d'amincissement étant suivie d'une étape de réalisation d'une fente longitudinale dans l'élément filiforme, cette fente étant ensuite élargie pour constituer l'ouverture précitée.
  • On forme, sur le bord du second élément des pattes en saillies complémentaires de celles formées sur le bord du premier élément, ces pattes complémentaires étant décalées l'une de l'autre le long du bord du second élément et perpendiculairement au faces principales de ce second élément, avec une répartition inverse de celle des pattes formées sur le premier élément.
  • L'oeillet ou l'ouverture est réalisé par découpage, alors que les pattes sont réalisées par matriçage ou forgeage. Ceci s'avère particulièrement économique et est compatible avec une production à cadence élevée.
According to advantageous but non-obligatory aspects of the invention, such a method may incorporate one or more of the following features taken in any technically permissible combination:
  • There is provided a step of thinning and calibration of the edge intended to be brought into engagement with, or engaged between, the projecting tabs, this step being prior to step e). This step of thinning and calibration is preferably carried out by localized matrixing of the filiform element, this matrixing inducing, on each side of this element, the creation of a housing for receiving one of the legs, this step thinning being followed by a step of producing a longitudinal slot in the filiform element, this slot being then widened to constitute the aforementioned opening.
  • On the edge of the second element are formed tabs projecting from those formed on the edge of the first element, these complementary tabs being offset from each other along the edge of the second element and perpendicularly to the main faces of the second element, with a distribution opposite to that of the tabs formed on the first element.
  • The eyelet or opening is made by cutting, while the legs are made by stamping or forging. This is particularly economical and is compatible with high speed production.

L'invention concerne également une lisse pouvant être réalisée grâce au procédé mentionné précédemment et, plus spécifiquement, une lisse de mécanisme de formation de la foule sur un métier à tisser, cette lisse comprenant un élément filiforme, ainsi qu'un oeillet immobilisé dans une ouverture ménagée dans cet élément filiforme. Cette lisse est caractérisée en ce qu'un premier élément, parmi l'oeillet et l'ouverture, porte, sur un bord, au moins deux pattes en saillie décalées l'une de l'autre le long de ce bord et perpendiculairement aux faces principales de ce premier élément, alors qu'une partie du bord du second élément est en prise avec ces pattes.The invention also relates to a rail that can be made by the above-mentioned method and, more specifically, to a shedding mechanism rail on a loom, the rail comprising a filamentary element, and an eyelet immobilized in a loom. opening formed in this filiform element. This smooth is characterized in that a first element, among the eyelet and the opening, carries, on an edge, at least two projecting lugs offset from each other along this edge and perpendicular to the faces. main part of this first element, while part of the edge of the second element is engaged with these tabs.

Une telle lisse est plus économique à fabriquer que les lisses de l'état de la technique, alors qu'elle assure un guidage aussi efficace du fil de chaîne, sans risque de blesser celui-ci.Such a smooth is more economical to manufacture than the smooth of the state of the art, while it ensures as efficient guiding warp, without risk of injury.

Selon des aspects avantageux mais non obligatoires de l'invention, une telle lisse peut incorporer une ou plusieurs des caractéristiques suivantes, prises dans toutes combinaisons techniquement admissibles :

  • L'épaisseur de l'oeillet est sensiblement égale à l'épaisseur maximale de l'élément filiforme, y compris au niveau des pattes.
  • Le bord qui est en partie engagé entre les pattes en saillie est, au moins au niveau de sa partie engagée entre ces pattes, aminci par rapport à l'épaisseur maximale de l'élément filiforme ou de l'oeillet.
  • Le second élément porte, sur un bord, des pattes en saillie complémentaires de celles formées sur le bord du premier élément, ces pattes complémentaires étant décalées l'une de l'autre le long du bord du second élément et perpendiculairement à ses faces principales, avec une répartition inverse de celle des pattes formées sur le premier élément.
  • Chaque patte est, par un de ses côtés, affleurante, avec une face principale de l'oeillet ou de l'élément filiforme, qui est perpendiculaire à l'axe précité.
  • L'élément filiforme est en acier inoxydable et l'oeillet est collé dans l'ouverture ménagée dans cet élément.
  • L'oeillet ou l'ouverture est pourvu de huit pattes réparties, sur son bord externe, par groupe de deux pattes décalées l'une par rapport à l'autre le long de ce bord et parallèlement à un axe central de l'orifice de guidage formé par l'oeillet.
According to advantageous but non-obligatory aspects of the invention, such a rail may incorporate one or more of the following features, taken in any technically permissible combination:
  • The thickness of the eyelet is substantially equal to the maximum thickness of the filiform element, including the legs.
  • The edge which is partly engaged between the projecting lugs is, at least at the level of its part engaged between these lugs, thinned with respect to the maximum thickness of the filiform element or the eyelet.
  • The second element carries, on one edge, projecting tabs complementary to those formed on the edge of the first element, these complementary tabs being offset from one another along the edge of the second element and perpendicular to its main faces, with an inverse distribution of that of the tabs formed on the first element.
  • Each leg is, by one of its sides, flush with a main face of the eyelet or filiform element, which is perpendicular to the aforementioned axis.
  • The filiform element is made of stainless steel and the eyelet is glued into the opening in this element.
  • The eyelet or aperture is provided with eight tabs distributed on its outer edge, in groups of two tabs offset relative to each other along this edge and parallel to a central axis of the aperture. guide formed by the eyelet.

L'invention concerne enfin un métier à tisser équipé d'un mécanisme de formation de la foule comprenant au moins une lisse telle que mentionnée ci-dessus.Finally, the invention relates to a loom equipped with a shedding mechanism comprising at least one rail as mentioned above.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre de quatre modes de réalisation d'une lisse conforme à son principe et de son procédé de fabrication, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une représentation schématique de principe d'un métier à tisser conforme à l'invention ;
  • la figure 2 est une vue en perspective et à plus grande échelle de la partie centrale d'une lisse du métier de la figure 1 ;
  • la figure 3 est une coupe partielle de principe à plus grande échelle selon la ligne III-III à la figure 2 ;
  • la figure 4 est une vue de face à plus grande échelle de l'oeillet de la lisse des figures 2 et 3 ;
  • la figure 5 est une coupe selon la ligne IV-IV à la figure 4 ;
  • la figure 6 est une vue de côté dans le sens de la flèche VI à la figure 4 ;
  • la figure 7 est une vue de face partielle d'un élément filiforme destiné à constituer une partie de la lisse des figures 2 et 3, lors d'une première étape de fabrication ;
  • la figure 8 est une coupe selon la ligne VIII-VIII à la figure 7 ;
  • la figure 9 est une coupe analogue à la figure 8, lors d'une deuxième étape de fabrication ;
  • la figure 10 est une vue en perspective analogue à la figure 2, lors d'une troisième étape de fabrication ;
  • la figure 11 est une vue analogue à la figure 2 pour une lisse conforme à un second mode de réalisation de l'invention ;
  • la figure 12 est une représentation partielle du bord d'un oeillet et du bord de l'ouverture d'un élément filiforme d'une lisse conforme à un troisième mode de réalisation de l'invention ;
  • les figues 12A, 12B et 12C sont respectivement des coupes selon les ligne A-A, B-B et C-C à la figure 12 ;
  • la figure 13 est une vue analogue à la figure 12, la lisse étant en cours de fabrication lors d'une étape correspondant à la figure 10 pour le premier mode de réalisation et
  • les figures 14A et 14B sont des coupes analogues respectivement aux figures 12A et 12B pour une lisse conforme à un quatrième mode de réalisation de l'invention.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of four embodiments of a smooth according to its principle and its manufacturing method, given only to by way of example and with reference to the appended drawings in which:
  • the figure 1 is a schematic representation of a weaving machine according to the invention;
  • the figure 2 is a perspective view and on a larger scale of the central part of a smooth of the trade of the figure 1 ;
  • the figure 3 is a partial sectional view on a larger scale along line III-III at figure 2 ;
  • the figure 4 is a front view on a larger scale of the eyelet of the smooth Figures 2 and 3 ;
  • the figure 5 is a section along the line IV-IV to the figure 4 ;
  • the figure 6 is a side view in the direction of arrow VI to the figure 4 ;
  • the figure 7 is a partial front view of a filiform element intended to constitute a part of the rail of Figures 2 and 3 during a first manufacturing step;
  • the figure 8 is a section along the line VIII-VIII to the figure 7 ;
  • the figure 9 is a cut similar to the figure 8 during a second manufacturing step;
  • the figure 10 is a perspective view similar to the figure 2 at a third stage of manufacture;
  • the figure 11 is a view similar to the figure 2 for a smooth according to a second embodiment of the invention;
  • the figure 12 is a partial representation of the edge of an eyelet and the edge of the opening of a filiform element of a smooth according to a third embodiment of the invention;
  • figs 12A, 12B and 12C are respectively sections along the lines AA, BB and CC at the figure 12 ;
  • the figure 13 is a view similar to the figure 12 , the arm is being manufactured during a stage corresponding to the figure 10 for the first embodiment and
  • the Figures 14A and 14B are similar cuts respectively to Figures 12A and 12B for a smooth according to a fourth embodiment of the invention.

Le métier à tisser M représenté à la figure 1 est équipé d'une mécanique Jacquard 2 qui commande plusieurs arcades 4 dont l'extrémité inférieure est associée à plusieurs cordons 6. L'extrémité inférieure 6a de chaque cordon 6 est reliée à l'extrémité supérieure 8a d'une lisse 8, chaque lisse 8 étant pourvue d'un oeillet 9 de passage d'un fil de chaîne 10 et soumise à l'action d'un ressort de rappel 12 fixé au cadre 14 du métier grâce à une tige 16.The loom M represented at figure 1 is equipped with a Jacquard mechanism 2 which controls several arches 4 whose lower end is associated with several cords 6. The lower end 6a of each bead 6 is connected to the upper end 8a of a rail 8, each rail 8 being provided with an eyelet 9 for the passage of a warp thread 10 and subjected to the action of a return spring 12 fixed to the frame 14 of the loom by means of a rod 16.

La lisse 8 est formée d'un élément filiforme 81 qui se présente au départ sous la forme d'un fil à section circulaire en acier inoxydable. Ce fil est écrasé pour présenter une section transversale aplatie. Dans sa partie centrale, l'élément 81 est séparé en deux branches 82 et 83 entre lesquelles est définie une ouverture 84 de réception de l'oeillet 9.Smooth 8 is formed of a filamentary element 81 which is initially in the form of a stainless steel circular section wire. This wire is crushed to have a flattened cross section. In its central part, the element 81 is separated into two branches 82 and 83 between which is defined an opening 84 for receiving the eyelet 9.

L'oeillet 9 est obtenu par découpage d'une bande de métal, de préférence une bande d'acier au carbone. Il définit un orifice 91 de passage d'un fil de chaîne 10. On note X91 l'axe central de l'orifice 91, cet axe étant perpendiculaire aux faces principales 92 et 93 de l'oeillet 9, c'est-à-dire à ses faces d'aires les plus importantes.The eyelet 9 is obtained by cutting a strip of metal, preferably a carbon steel strip. It defines a hole 91 for passing a warp thread 10. X 91 is the central axis of the orifice 91, this axis being perpendicular to the main faces 92 and 93 of the eyelet 9, that is to say to say to its faces of the most important areas.

L'oeillet 9 est de forme oblongue et l'on note 94 son bord externe qui est globalement ovale ou en forme d'ellipse aplatie.The eyelet 9 is oblong in shape and its outer edge 94 is generally oval or in the form of a flattened ellipse.

Le bord 94 est équipé de huit pattes 95 dont quatre, portant la référence 95a, ont un de leurs côtés affleurant avec la surface 92, alors que les quatre autres pattes, portant la référence 95b, ont un de leurs côtés affleurant avec la surface 93.The edge 94 is equipped with eight lugs 95, four of which, bearing the reference 95a, have one of their sides flush with the surface 92, while the other four lugs, bearing the reference 95b, have one of their sides flush with the surface 93.

Les pattes 95a et 95b font saillie par rapport au bord 94 et sont disposées par paires se suivant le long du bord 94, chaque paire comprenant une patte 95a et une patte 95b, ces pattes étant décalées latéralement l'une de l'autre le long du bord 94.The tabs 95a and 95b protrude from the edge 94 and are arranged in pairs along the edge 94, each pair comprising a tab 95a and a tab 95b, these tabs being laterally offset from one another along from the edge 94.

On note P9 le plan médian de l'oeillet 9, c'est-à-dire un plan parallèle aux faces 92 et 93 et équidistant de celles-ci. Les pattes 95a et 95b sont réparties de part et d'autre de ce plan. En particulier, les pattes 95a et 95b d'une même paire de pattes sont décalées, de part et d'autre de ce plan, selon une direction D9 parallèle à l'axe X91. En regardant la tranche de l'oeillet 9 représentée à la figure 5, on peut considérer que les pattes 95a et 95b sont disposées « en quinconce » de part et d'autre du plan P9. Les pattes 95a et 95b d'une même paire sont décalées, le long du bord 94, d'une distance d non nulle et, parallèlement à la direction D9, d'une distance d' prise entre les centres des pattes 95a et 95b également non nulle.Note P 9 the median plane of the eyelet 9, that is to say a plane parallel to the faces 92 and 93 and equidistant thereof. The legs 95a and 95b are distributed on either side of this plane. In particular, the tabs 95a and 95b of the same pair of tabs are offset, on either side of this plane, in a direction D 9 parallel to the X axis 91 . Looking at the slice of the eyelet 9 represented in the figure 5 , it can be considered that the tabs 95a and 95b are arranged "staggered" on either side of the plane P 9 . The tabs 95a and 95b of the same pair are offset along the edge 94 by a non-zero distance d and, parallel to the direction D 9 , by a distance between the centers of the tabs 95a and 95b. also non-zero.

Il est formé par la succession de deux pattes 95a et 95b d'une même paire un volume V, représenté en grisé à la figure 6 et de largeur d', dans lequel peut être introduit partiellement le bord 85 de l'ouverture 84 afin de retenir fermement en position l'oeiilet 9 dans cette ouverture.It is formed by the succession of two legs 95a and 95b of the same pair a volume V, shown in gray at the figure 6 and width of, in which can be partially introduced the edge 85 of the opening 84 to firmly hold the oeiilet 9 in this opening.

Pour pouvoir être engagé dans ce volume grisé V, le bord 85 est aminci, ainsi que cela ressort des figures 7 à 10. Lorsqu'on met en forme l'élément 81 pour réaliser la lisse 8, celui-ci est matricé sur une longueur correspondant à la plus grande dimension de l'ouverture 84 pour former, à partir de chacun de ses plus grands côtés ou faces principales 86 et 87, deux logements 86a et 87a qui s'étendent chacun sur deux profondeurs p1 et p2, la profondeur la plus importante p2 correspondant à la zone centrale de chacun des logements 86a et 87a.To be able to be engaged in this gray volume V, the edge 85 is thinned, as is apparent from the Figures 7 to 10 . When the element 81 is shaped to produce the heddle 8, the latter 8 is stamped on a length corresponding to the largest dimension of the opening 84 to form, from each of its longer sides or main faces. 86 and 87, two housing 86a and 87a which each extend over two depths p 1 and p 2 , the most important depth p 2 corresponding to the central zone of each housing 86a and 87a.

Lorsque les logements 86a et 87a ont été formés par matriçage de l'élément 81, une fente 88 est créée dans le fond de ceux-ci comme représenté à la figure 9, cette fente rejoignant les parties les plus profondes des logements 86a et 87a. Par la formation de cette fente 88, on crée les branches 82 et 83 qui peuvent alors être écartées l'une de l'autre, dans le sens des flèches F2 aux figures 9 et 10, pour atteindre la position de la figure 10 où les branches 82 et 83 définissent entre elles l'ouverture 84 avec des dimensions transversales supérieures à l'encombrement de l'oeillet 10 dans le plan visible à la figure 4.When the housings 86a and 87a have been formed by stamping the element 81, a slot 88 is created in the bottom thereof as shown in FIG. figure 9 , this slot joining the deepest parts of housing 86a and 87a. By the formation of this slot 88, the branches 82 and 83 are created which can then be separated from each other, in the direction of the arrows F 2 to figures 9 and 10 , to reach the position of the figure 10 where the branches 82 and 83 define between them the opening 84 with transverse dimensions greater than the bulk of the eyelet 10 in the plane visible at the figure 4 .

Au terme de cette opération, le bord 85 forme, sur toute sa longueur, un nez 85a calibré de part et d'autre duquel sont ménagés deux épaulements 85b de profondeur p1. Le nez 85a a une largeur l85, prise parallèlement à l'axe X91, inférieure à l'épaisseur e81 de l'élément 81 et à la distance d'.At the end of this operation, the edge 85 forms, over its entire length, a nose 85a calibrated on either side of which are formed two shoulders 85b of depth p 1 . The nose 85a has a width l 85 , taken parallel to the axis X 91 , less than the thickness e 81 of the element 81 and at the distance of.

Comme représenté à la figure 10, il est alors possible de mettre en place l'oeillet 9 dans l'ouverture 84, après avoir écarté les branches 82 et 83 par déformation élastique, puis en les laissant se rapprocher l'une de l'autre dans le sens des flèches F3 sur cette figure, ce qui revient à engager localement, c'est-à-dire à amener en prise, le nez 85a du bord 85 dans les volumes V définis par les deux pattes 95a et 95b de chaque paire de pattes. L'oeillet 9 est alors serré, fermement et sans jeu, par les branches 82 et 83.As represented in figure 10 it is then possible to put in place the eyelet 9 in the opening 84, after spreading the branches 82 and 83 by elastic deformation, and then allowing them to approach each other in the direction of the arrows F 3 in this figure, which amounts to engaging locally, that is to say, to bring into engagement, the nose 85a of the edge 85 in the volumes V defined by the two legs 95a and 95b of each pair of legs. The eyelet 9 is then tight, firmly and without play, by the branches 82 and 83.

Pour assurer la pérennité de l'accrochage et combler les ajours entre l'oeillet 9 et l'élément 81, de la colle est appliquée dans les ajours 84a qui demeurent de part et d'autre de l'oeillet 9. La colle se propage par capillarité au niveau d'une partie au moins de l'interface entre le bord 85 et l'oeillet 9. Cette colle peut être de tout type connu et, notamment une colle époxy mono-composant avec durcissement aux rayons ultra-violets ou une colle anaérobie durcie par rayons ultra-violets.To ensure the durability of the attachment and fill the openings between the eyelet 9 and the element 81, glue is applied in the openings 84a which remain on both sides of the eyelet 9. The glue spreads by capillarity at least at least part of the interface between the This glue can be of any known type and, in particular, a one-component epoxy glue with ultraviolet ray curing or an ultraviolet-cured anaerobic glue.

On note e95 l'épaisseur de chacune des pattes 95, cette épaisseur étant légèrement inférieure à la profondeur p1 des logements 86a et 87a. Par ailleurs, l'épaisseur totale e9 de l'oeillet 9 est choisie sensiblement égale à l'épaisseur e81. Ainsi, lorsque l'oeillet 9 est coincé et collé dans l'ouverture 84 comme représenté à la figure 3, ses faces 92 et 93 peuvent être en affleurement des faces 86 et 87 de l'élément 81, les pattes 95 étant reçues dans les épaulements 85b, de part et d'autre du nez 85a.The thickness of each of the lugs 95 is denoted e 95 , this thickness being slightly less than the depth p 1 of the housings 86a and 87a. Moreover, the total thickness e 9 of the eyelet 9 is chosen substantially equal to the thickness e 81 . Thus, when the eyelet 9 is jammed and stuck in the opening 84 as shown in FIG. figure 3 , its faces 92 and 93 may be flush with the faces 86 and 87 of the element 81, the tabs 95 being received in the shoulders 85b, on either side of the nose 85a.

Le positionnement des pattes 95a et 95b, qui sont décalées les unes par rapport aux autres le long du bord 94, permet de réaliser ces pattes par matriçage de la bande d'acier dans laquelle est découpée l'oeillet 9. En variante, l'oeillet peut être réalisé par forgeage à froid. Le fait d'utiliser le matriçage ou le forgeage pour créer les pattes 95 évite d'avoir recours à des opérations d'usinage qui seraient très coûteuses et délicates à mettre en oeuvre compte tenu de la taille de l'oeillet 9 dont la longueur est, en pratique, inférieure à 20 mm, de préférence à 10 mm.The positioning of the tabs 95a and 95b, which are offset relative to each other along the edge 94, allows for these tabs by stamping of the steel strip in which the eyelet 9 is cut. In a variant, the eyelet can be achieved by cold forging. Using stamping or forging to create the legs 95 avoids the need for machining operations that would be very expensive and difficult to implement given the size of the eyelet 9 whose length is in practice, less than 20 mm, preferably 10 mm.

Compte tenu du mode de fabrication des oeillets 9 par découpage, matriçage et/ou forgeage, il n'est pas nécessaire d'avoir recours à une ébauche circulaire du type de celle utilisée dans FR-A-2 267 403 ou EP-A-1 015 675 , ce qui permet d'adapter la forme du bord 94 à la forme finale de l'ouverture 84, les ajours 84a à obturer éventuellement avec la colle pouvant être de dimensions réduites par rapport à la surface totale de l'ouverture 84.Taking into account the method of manufacture of the eyelets 9 by cutting, stamping and / or forging, it is not necessary to use a circular blank of the type used in FR-A-2,267,403 or EP-A-1,015,675 , which makes it possible to adapt the shape of the edge 94 to the final shape of the opening 84, the openings 84a to be closed possibly with the glue being able to be reduced in size with respect to the total surface of the opening 84.

Le mode de fabrication des oeillets 9 permet des cadences de production très élevées car les différentes opérations mises en oeuvre peuvent être effectuées sur une même machine, avec plusieurs postes de travail, les outils de mise en forme ayant tous des déplacements perpendiculaires au plan P9.The method of manufacturing eyelets 9 allows very high production rates because the different operations implemented can be performed on the same machine, with several workstations, the formatting tools all having displacements perpendicular to the plane P 9 .

Le fait que l'oeillet est collé sur l'élément 81 et non pas brasé sur celui-ci permet que cet élément 81 soit réalisé en acier inoxydable. L'utilisation d'un élément 81 en acier inoxydable permet de se dispenser des opérations de nickelage classiques sur les éléments en acier non inoxydable, alors que ces opérations de nickelage sont susceptibles de générer l'apparition de bavures « grattons » qui peuvent blesser ou couper les fils de chaîne.The fact that the eyelet is stuck on the element 81 and not soldered to it allows this element 81 to be made of stainless steel. The use of a stainless steel element 81 makes it possible to dispense with conventional nickel-plating operations on non-stainless steel elements, whereas these nickel-plating operations are capable of generating the appearance of "scrape" burrs which can injure or cut the warp threads.

Dans le second mode de réalisation de l'invention représenté à la figure 11, les éléments analogues à ceux du premier mode de réalisation portent des références identiques. Ce mode de réalisation présente une solution inversée ou « miroir » par rapport au premier mode de réalisation en ce sens que les pattes 95a et 95b sont réparties sur le bord 85 de l'ouverture 84 ménagée dans l'élément filiforme 81 de la lisse 8, alors que le bord externe 94 de l'oeillet 9 est aminci et présente un nez 94a de moindre épaisseur que l'oeillet et destiné à être engagé dans le volume défini par deux pattes adjacentes 95a et 95b d'une même paire de pattes 95. Comme dans le premier mode de réalisation, les pattes 95a et 95b sont disposées en quinconce, en étant décalées l'une de l'autre à la fois parallèlement au bord 85, ce que représente la distance d à la figure 11, et perpendiculairement à celui-ci, selon la direction de l'axe X91 de l'orifice 91 défini par l'oeillet 9.In the second embodiment of the invention shown in figure 11 elements similar to those of the first embodiment bear identical references. This embodiment has an inverse solution or "mirror" with respect to the first embodiment in that the tabs 95a and 95b are distributed over the edge 85 of the opening 84 formed in the filiform element 81 of the stringer 8 , while the outer edge 94 of the eyelet 9 is thinned and has a nose 94a of lesser thickness than the eyelet and intended to be engaged in the volume defined by two adjacent legs 95a and 95b of the same pair of legs 95 As in the first embodiment, the tabs 95a and 95b are staggered, being offset from each other both parallel to the edge 85, which represents the distance d to the figure 11 and perpendicularly thereto in the direction of the X axis 91 of the orifice 91 defined by the eyelet 9.

Les pattes 95a et 95b sont affleurantes aux faces latérales de l'élément filiforme 81.The tabs 95a and 95b are flush with the lateral faces of the filiform element 81.

Comme dans le premier mode de réalisation, sillet 9 peut être immobilisé par un effort de serrage F3 dû aux branches 82 et 83 de l'élément 81 et en étant collé, ceci afin d'obtenir un ancrage supplémentaire.As in the first embodiment, nut 9 can be immobilized by a clamping force F 3 due to the branches 82 and 83 of the element 81 and being bonded, this in order to obtain additional anchoring.

Comme représenté aux figures 12 et 13 où les éléments analogues à ceux du premier mode de réalisation portent les mêmes références, le bord 94 de l'oeillet 9 peut être pourvu de deux pattes 95a et 95b qui forment une paire de pattes 95 décalées comme dans le premier mode de réalisation. La patte 95a est affleurante avec une face principale 92 de l'oeillet 9, alors que la patte 95b est affleurante avec la face principale opposée 93.As represented in Figures 12 and 13 where elements similar to those of the first embodiment bear the same references, the edge 94 of the eyelet 9 may be provided with two tabs 95a and 95b which form a pair of lugs 95 shifted as in the first embodiment. The tab 95a is flush with a main face 92 of the eyelet 9, while the tab 95b is flush with the opposite main face 93.

De la même manière, le bord 85 de la branche 82 de l'élément filiforme 81 est pourvu de deux pattes en saillie 95', à savoir une patte 95'a affleurante avec la face 86 principale de la branche 82 et une patte 95'b affleurante avec la face opposée 87 de cette branche. Les pattes 95' sont décalées l'une de l'autre le long du bord 85, d'une distance d identique à la distance d de décalage des pattes 95 l'une par rapport à l'autre le long du bord 94. Les pattes 95' sont également décalées l'une de l'autre perpendiculairement aux faces 86 et 87 d'une distance d' entre leurs centres respectifs, de même que les pattes 95 sont décalées perpendiculairement aux faces 92 et 93 de la même distance d'. Le sens de décalage des pattes 95' perpendiculairement aux faces 86 et 87 est inverse de celui des pattes 95.In the same way, the edge 85 of the branch 82 of the filiform element 81 is provided with two protruding lugs 95 ', namely a lug 95'a flush with the main face 86 of the branch 82 and a lug 95' flush with the opposite side 87 of this branch. The tabs 95 'are offset from each other along the edge 85 by a distance d which is identical to the distance d of offset of the tabs 95 relative to one another along the edge 94. tabs 95 'are also offset from each other perpendicular to faces 86 and 87 by a distance from their respective centers, as well as tabs 95 are offset perpendicular to faces 92 and 93 of the same distance from each other. . The offset direction of the tabs 95 'perpendicular to the faces 86 and 87 is opposite to that of the tabs 95.

Il est ainsi possible, lors de la mise en place de l'oeillet 9 dans l'ouverture 84 d'amener les pattes 95a et 95'b en recouvrement l'une de l'autre, alors que les pattes 95'a et 95b sont amenées en recouvrement l'une de l'autre, comme représenté respectivement aux figures 12A et 12B.It is thus possible, during the establishment of the eyelet 9 in the opening 84 to bring the legs 95a and 95'b overlapping each other, while the legs 95'a and 95b are brought into recovery from each other, as shown respectively in Figures 12A and 12B .

Dans les portions des bords 94 et 85 dépourvus de pattes, ces bords sont rectilignes et perpendiculaires aux faces principales 86 et 87, 92 et 93 des éléments 9 et 81, comme représenté à la figure 12C.In the portions of the edges 94 and 85 without legs, these edges are rectilinear and perpendicular to the main faces 86 and 87, 92 and 93 of the elements 9 and 81, as shown in FIG. figure 12C .

Comme le montrent les figures 14A et 14B, les pattes 95a, 95b, 95'a et 95'b peuvent être en biseau, c'est-à-dire présenter une surface inclinée de 45° environ par rapport aux faces principales 86, 87, 92 et 93 des éléments 82 et 9, en étant décalées perpendiculairement à ces faces, d'une distance d', le long des bords 85 et 94.As shown by Figures 14A and 14B , the tabs 95a, 95b, 95'a and 95'b may be beveled, that is to say present a surface inclined at approximately 45 ° with respect to the main faces 86, 87, 92 and 93 of the elements 82 and 9, being offset perpendicularly to these faces, a distance of, along the edges 85 and 94.

En variante, dans les quatre modes de réalisation décrits, comme le blocage de l'oeillet 9 dans l'ouverture 84, obtenu grâce au caractère élastique des branches 82 et 83, est très efficace, le collage de l'oeillet dans cette ouverture peut être supprimé.Alternatively, in the four embodiments described, as the locking of the eyelet 9 in the opening 84, obtained thanks to the elastic nature of the branches 82 and 83, is very effective, the bonding of the eyelet in this opening can to be deleted.

L'invention a été représentée dans les deux premiers modes de réalisation avec un oeillet et une ouverture dont le bord 94 ou 85 est équipé de huit pattes 95. En pratique, le nombre de pattes 95 résulte d'un choix de conception du spécialiste qui peut prévoir de n'utiliser que deux de ces pattes ou un nombre quelconque de celles-ci, ce nombre pouvant être inférieur ou supérieur à huit. Lorsque plus de deux pattes sont utilisées, elles sont avantageusement réparties sur la longueur du bord 94 ou 85, de préférence par paire.The invention has been shown in the first two embodiments with an eyelet and an opening whose edge 94 or 85 is equipped with eight tabs 95. In practice, the number of tabs 95 results from a design choice of the specialist who may provide to use only two of these legs or any number thereof, this number may be less than or greater than eight. When more than two legs are used, they are advantageously distributed over the length of the edge 94 or 85, preferably in pairs.

L'invention a été représentée lors de sa mise en oeuvre pour la fabrication d'une lisse de métier à tisser de type Jacquard. Elle s'applique également à la fabrication d'une lisse destinée à être montée sur un cadre de métier à tisser, ce cadre étant entraîné par une mécanique d'armure, par exemple une ratière ou une mécanique d'armure fondamentale.The invention has been shown in its implementation for the manufacture of a loom Jacquard loom type. It also applies to the manufacture of a rail intended to be mounted on a loom frame, this frame being driven by a weave mechanism, for example a dobby or fundamental armor mechanics.

Claims (13)

  1. Process for manufacturing a loom (M) heddle (8), said process including the steps consisting in:
    a) manufacturing an eyelet (9) for guiding a warp yarn (10),
    b) making an opening (84) for receiving said eyelet in a threadlike element (81), and
    c) placing and immobilizing the said eyelet in said opening,
    characterized in that
    d) during the manufacture of said eyelet or the implementation of the opening, on an edge (85 or 94) of a first element, among said eyelet (9) and said opening (84), are formed at least two projecting tabs (95) offset (d, d') from each other both along said edge and perpendicularly to the principal faces (86, 87 ; 92, 93) of said first element,
    e) during the placement of said eyelet in said opening, said tabs (95) are engaged (F3) with a part (85a ; 94a ; 95') of the edge (85 ; 94) of the second element, among said eyelet and said opening.
  2. Process according to Claim 1, characterized in that it includes a step of thinning and sizing said edge (85) intended to be engaged with said tabs (95), said step of thinning being prior to the placement of said eyelet in said opening (84).
  3. Process according to Claim 2, characterized in that said thinning and sizing step is carried out by localized die-stamping of said threadlike element (81) said die-stamping induces on each side (86 and 87) of this threadlike element the creation of a housing (86a and 87a) for receiving one of said tabs (95) and said step of thinning is followed by a step of forming a longitudinal slit (88) in the threadlike element with said slit next enlarged (F2) to make said opening (84).
  4. Process according to Claim 1, characterized in that it includes a step consisting in forming, on the edge (85) of the second element (81), projecting tabs (95') which are complementary to those (95) formed on the edge (94) of the first element (9) said complementary tabs being offset from each other along the edge of said second element and perpendicularly to the principal faces (86 and 87) of said second element, with an inverse distribution from that of the tabs formed on said first element.
  5. Process according to one of the preceding claims, characterized in that said eyelet (9) or said opening (84) is made by cutting, and said tabs (95 and 95') are made by die-stamping or forging.
  6. Heddle for a shed-forming mechanism on a loom including a threadlike element (81) and an eyelet (9) immobilized in an opening (84) arranged in said threadlike element, characterized in that a first element, among said eyelet and said opening, has, on one edge (85 ; 94), at least two projecting tabs (95) offset (d, d') from each other along said edge and perpendicularly to the principal faces (86, 87 ; 92, 93) of said first element, whereas a part (85a ; 94a ; 95') of the edge (85 ; 94) of the second element, among said eyelet and said opening, is engaged (F3) with said tabs.
  7. Heddle according to Claim 6, characterized in that the thickness (e9) of said eyelet is roughly equal to the maximum thickness (e81) of said threadlike element (81), including in the area of said tabs (95).
  8. Heddle according to one of Claims 6 or 7, characterized in that said edge (85 ; 94) which is partly engaged (F3) with said tabs (95) is, at least in the area of a part (85a ; 94a) inserted between said tabs, thinned (l85) relative to the maximum thickness (e81) of said threadlike element (81) or said eyelet(9).
  9. Heddle according to one of Claims 6 or 7, characterized in that said second element (81) has, on one edge (85), projecting tabs (95') which are complementary to those (95) formed on the edge (94) of said first element (9) said complementary tabs being offset from each other along said edge of said second element and perpendicularly to the principal faces (86, 87) of said second element, with an inverse distribution from that of the tabs formed on said first element.
  10. Heddle according to one of Claims 6 to 9, characterized in that each tab (95 and 95') is, on one of its sides, flush with a principal face (86, 87 ; 92, 93) of said eyelet (9) or said threadlike element (81).
  11. Heddle according to one of Claims 6 to 10, characterized in that said threadlike element (81) is of stainless steel and said eyelet (9) is bonded in said opening (84).
  12. Heddle according to one of Claims 6 to 11, characterized in that said eyelet (9) or said opening (84) is provided with eight tabs (95) distributed on its edge (85 ; 94) in groups of two tabs offset (d, d') relative to each other along said edge and in a direction parallel to a central axis (X91) of a guiding hole (91) formed by said eyelet.
  13. Loom (M) equipped with a shed-forming mechanism including at least one heddle (8) according to one of Claims 6 to 12.
EP06356115.3A 2005-09-27 2006-09-26 Method of producing a heddle, heddle of a shed forming device and loom incorporating such a heddle Active EP1767676B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0509854A FR2891282B1 (en) 2005-09-27 2005-09-27 METHOD FOR MANUFACTURING A SMOOTH, MECHANISM OF CROWN FORMATION MECHANISM, AND WOVEN BELT INCORPORATING SUCH A SMOOTH.

Publications (2)

Publication Number Publication Date
EP1767676A1 EP1767676A1 (en) 2007-03-28
EP1767676B1 true EP1767676B1 (en) 2017-05-17

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EP06356115.3A Active EP1767676B1 (en) 2005-09-27 2006-09-26 Method of producing a heddle, heddle of a shed forming device and loom incorporating such a heddle

Country Status (9)

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US (1) US7469723B2 (en)
EP (1) EP1767676B1 (en)
JP (1) JP5143391B2 (en)
KR (1) KR101274052B1 (en)
CN (1) CN1940157B (en)
ES (1) ES2629078T3 (en)
FR (1) FR2891282B1 (en)
PT (1) PT1767676T (en)
TW (1) TWI361233B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2166138A1 (en) 2008-09-23 2010-03-24 Groz-Beckert KG Jacquard heald with embossed heald eye area
BE1018732A3 (en) * 2009-04-24 2011-07-05 Wiele Michel Van De Nv THREE-DIMENSIONAL LEVEL.
EP2730687B1 (en) * 2012-11-08 2015-09-16 Groz-Beckert KG Heald for a weaving machine, in particular a circular loom
US9328435B2 (en) * 2013-11-08 2016-05-03 Deertex, Inc. Functional weaving vamp fabric
CN104153088B (en) * 2014-08-13 2015-09-16 朱永春 The connection device of a kind of harness cord and heald bar
FR3027315B1 (en) * 2014-10-16 2019-04-26 Staubli Lyon SMOOTH FOR WEAVING AND WORK EQUIPPED WITH SUCH A SMOOTH
FR3027314B1 (en) * 2014-10-16 2019-04-26 Staubli Lyon SMOOTH FOR WEAVING AND WEAVING EQUIPMENT EQUIPPED WITH SUCH A SMOOTH
TWM493278U (en) * 2014-10-21 2015-01-11 Deertex Inc Footwear assembly with breathable and wear-resistant woven vamp
FR3105269B1 (en) * 2019-12-20 2021-12-31 Staubli Lyon Heddle for loom and harness fitted with such a heddle

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US5052446A (en) * 1989-06-12 1991-10-01 Sulzer Brothers Limited Thermoplastic heddle with braided fiber tube reinforcement
US5092370A (en) * 1990-01-31 1992-03-03 Asten Group, Inc. Split heddle with superimposed blades with aligned apertures
DE4336362C1 (en) 1993-10-25 1994-10-13 Grob & Co Ag Thread eyelet for a heald
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FR2776676B1 (en) * 1998-03-31 2000-05-26 Staubli Lyon METHOD FOR MANUFACTURING A SMOOTH, SMOOTH AND CROWD FORMING DEVICE FOR WEAVING MATERIAL
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Publication number Publication date
FR2891282B1 (en) 2007-11-16
CN1940157A (en) 2007-04-04
JP2007092267A (en) 2007-04-12
TW200722568A (en) 2007-06-16
FR2891282A1 (en) 2007-03-30
KR20070035446A (en) 2007-03-30
US7469723B2 (en) 2008-12-30
US20070084518A1 (en) 2007-04-19
TWI361233B (en) 2012-04-01
EP1767676A1 (en) 2007-03-28
CN1940157B (en) 2011-04-13
ES2629078T3 (en) 2017-08-07
PT1767676T (en) 2017-08-04
KR101274052B1 (en) 2013-06-12
JP5143391B2 (en) 2013-02-13

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