EP0413658A1 - Braiding machine - Google Patents

Braiding machine Download PDF

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Publication number
EP0413658A1
EP0413658A1 EP90810589A EP90810589A EP0413658A1 EP 0413658 A1 EP0413658 A1 EP 0413658A1 EP 90810589 A EP90810589 A EP 90810589A EP 90810589 A EP90810589 A EP 90810589A EP 0413658 A1 EP0413658 A1 EP 0413658A1
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EP
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Prior art keywords
braid
coil
core
support
supports
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EP90810589A
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German (de)
French (fr)
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EP0413658B1 (en
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Charles Maillefer
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Individual
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04CBRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C3/00Braiding or lacing machines

Definitions

  • the English patent GB 1 299 611 describes a braiding arrangement in which the bobbin carriers provided for the braid elements describe different closed curves, generally circles, in being guided on crossing tracks which are equipped with propulsion means. This arrangement avoids the shape of a lobed curve and the inertia effects which result therefrom, but the carriage of carriages along running tracks creates constructive complications which prevent achieving the desired stability with constructions of this type.
  • the spool holders for the braid elements are distributed on two rotary supports; these are arranged so that the surfaces described by the braid elements coming from the coils mounted on each support and the corresponding support delimit two closed volumes which interpenetrate.
  • a braid core reel is housed in the space thus defined which is common to both volumes.
  • the present invention provides a solution which differs mechanically from that described in the British document GB 853 454 while using the same topological arrangement of the various elements present.
  • the subject of the invention is a braiding machine comprising a frame, a coil supplying a braid core, a means for holding the coil supplying a braid core, two rotary supports, rotating around determined axes relative to the frame, and spool carriers of braid elements mounted on each of said supports and each carrying a spool supplying a braid element unwinding from the spool, the whole arranged so that the braid elements coming from coils mounted on each support and the supports together delimit two closed volumes which interpenetrate, and have a common part, the means for holding the said braid core supply coil in a determined position inside said common part, characterized in that the holding means comprises a means of remote action.
  • a braiding frame comprises a support 1 of a braid receiving coil 2 sithé downstream of a braiding die 3 placed at the braiding point.
  • the general layout of the machine is horizontal. Coils carrying braid elements, four in number, are distributed with their reel holders 4, 5, 6 and 7 in pairs on two supports 8 and 9 (fig. 1) the main parts of which are straight bars fixed to their center on shaft elements 10 and 11. These two shaft elements 10 and 11 rotate in fixed bearings 12, 13, 14 and 15. They are arranged horizontally and symmetrically with respect to the braiding axis, c that is to say with respect to a horizontal line coaxial with the braiding die 3. Pinions 16, 17 and 18 transmit a rotational movement to the shafts 10 and 11 from a motor 19, so that the shafts 10 and 11 rotate in opposite directions, as indicated by the arrows in fig. 1.
  • each of the raceways 20 or 21 comprises two rails 22, so that a carriage 23, mounted on pairs of rollers 23a, is maintained by the gravitational force permanently in the lowest part of the raceway 20 and 21 when the support is driven with the shaft 10.
  • the support 9 comprises, in addition to the diametral bar already mentioned and the length of which is the same as that of the bar 8, two bands 24 and 25 which are also provided with eyelets 33 making it possible to guide the braid elements unwinding from the reels 6 and 7. These bands 24 and 25 and their respective eyelets are arranged so that, when the supports 8 and 9 rotate in opposite directions, the bands 24 and 25 pass alternately through the slots formed between the parts of the raceways 20 and 21 They then penetrate inside the volume delimited by these raceways.
  • the carriage 23 which, under the effect of its weight, rolls on the rails 22 when the support 8 rotates, is constantly maintained in a stable position inside the space which is common to the two volumes delimited by the supports 8 and 9, and the conical surfaces defined by the braid elements which start from the braid coils pass through the eyelets 33 and end at the braiding point 3.
  • the braid core delivery coil designated by 26 and mounted on the support 23 takes place regularly while the coil 2 is rotated.
  • the carriage 23 can be equipped with an arm 27 supporting a guide eyelet 28 for the core of the braid.
  • each support 8 or 9 being equipped with two reel holders 6 and 7 or 4 and 5
  • the arrangement shown in fig. 3 is very similar to the one just described. Note however that the radial arms 8 and 9, which here replace the arms of the first variant, are oriented obliquely with respect to the shafts 10 and 11 in the plane containing the axis of the shaft. This arrangement allows the axes of the shafts 10 and 11 to be brought closer and, consequently, to save space for the space common to the two volumes defined by the supports and the envelopes described by the braid elements coming from the coils mounted on each support. .
  • the axial arms 24 and 25, as well as the elements of the raceways 20 and 21, carry on their outer face the reel carriers 4, 5, 6 7 for the braid elements.
  • Fig. 4 shows another variant based on the same construction and in which the two supports have practically the same shape as in the variant of FIG. 3.
  • the shafts 10 and 11 are hollow shafts.
  • Spool holders for braid elements 4, 5, 6 and 7 here are grouped together on circular plates 29 and 30 which are fixed respectively to the rear ends of the shafts 10 and 11, so that the braid elements unwinding from the reels pass through the center of the shafts and are then guided by rollers to reach the outer edges of the arms 24 and 25 or portions of raceways 20 or 21 facing the braiding die.
  • Fig. 5 schematically shows an arrangement in which the two supports 8 and 9 are mounted on shafts 31 and 32 which are not parallel, but whose axes form an angle between them and intersect at the braiding point defined by the braiding die 3 .
  • the shafts 31 and 32 are hollow shafts and the reel holders of the braid elements 4, 5, 6 and 7 are mounted on discs 29 and 30 integral respectively with the shafts 31 and 32.
  • the 'shaft 31 is arranged horizontally, so that the partial raceways 20 and 21 are located in a vertical plane and the carriage 23 is held by the gravitational force at the lowest point of this raceway.
  • the shaft 32 will be placed obliquely, its axis being directed upwards and situated in a vertical plane containing the axis of the shaft 31.
  • the machine has two supports 34 and 35 for the reel holders of the braid elements. These two supports 34 and 35 are here of similar construction and are arranged symmetrically in a vertical plane. Their trees 36 and 37, similar to trees 31 and 32, are directed towards the braiding point. Each support 34 or 35 comprises two diametrically opposite arms 38 and 39 which extend obliquely towards the braiding die and which are extended by two guide rods 40 and 41. Two reel holders 42 and 43 are mounted on the outer sides of the two arms 38 and 39.
  • the braid elements are unwound from the coils, 4, 5, 6 and 7, so as to pass through eyelets 44 and reach the braiding point 3, thus defining two volumes which are closed by the arms 38 and 39 and which interpenetrate.
  • the two supports 34 and 35 being of identical construction, they will simply be positioned relative to their drive means, so as never to be in the same plane.
  • the coil 45 which delivers the core wire 46 from the braid is mounted on a coil holder 47, the sides of which carry clamping devices 48 with electromagnetic action acting on a bar 49 which extends along the coil 45.
  • This bar may be provided with a roller. It plays the role of a brake, the device 48 being electronically controlled remotely from a control and adjustment element 50 and the coil support 47 being equipped with a detector which locates the height position or the unwinding speed of the reel 45.
  • the elements 47, 48 and 50 make it possible to adjust the braking force exerted by the bar 49, so that the reel 45 suspended from the core 46 of the braid is hand holds at constant height or takes place at a speed synchronized with the winding speed of the take-up reel 2.
  • the assembly 47 remains in a stabilized position inside the space common to the two volumes delimited by the braid elements and their support. This holding in position takes place under the action of the electronic remote control adjusted by the device 50.
  • This figure shows an arrangement comprising two reel supports 34 and 35 and a support 1 for the braid take-up reel 2, which is exactly similar to what is shown in FIG. 6.
  • reel carriers 42, 43 and the arms 40 or 41 parallel to the respective shaft 36 or 37.
  • the number of arms 38, 39 on each support could be greater than 2. It will be noted that the possibilities of increasing the number of arms and, consequently, of reel holders for the braid elements are here more easily achievable than in embodiments where the support of the core thread supplying coil is shaped like a rolling carriage on a raceway.
  • the core wire 46 which unwinds from the spool 45, extends vertically downstream of the braiding die 3 and slightly obliquely upstream of this die, as in the arrangement of fig. 6.
  • the coil 45 pivots on a support 51 which simply comprises a bearing and a fairing 52.
  • This fairing 52 cooperates with a device for propelling a fluid which is represented at 53 in the form of a nozzle, but which could, if necessary, have the shape of a crown of vertical axis with several jets.
  • Jets can also be fixed on the half-enclosures such as the elements 20 and 21 of FIG. 1, which represents an embodiment of a horizontal axis in which the carriage 23 is replaced by a floating support on an air cushion.
  • the propulsion device 53 or the jets described will preferably be supplied with pressurized air and will create a carrier cushion for the coil support 51.
  • the supply coil of the braid core wire is held in position inside the space entirely closed defined by the interpenetration of the two volumes defined by the supports of the braid elements and the surfaces described by the braid elements themselves when they reach the braiding point. Stabilization of the position of this coil is obtained by safe and practical means, easy to perform.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)

Abstract

Deux supports (8 et 9) montés sur des axes parallèles (10 et 11) comportent l'un les deux bras parallèles (24 et 25) et l'autre des portions de chemins de roulement (20 et 21). La bobine débitrice (26) de l'âme de la tresse est montée sur le chariot (23) qui roule sur le chemin de roulement (20, 21) en restant à la partie inférieure de celui-ci. Le mandrin (28) solidaire du chariot (23) guide le fil d'âme de la tresse vers la filière de tressage (3) vers laquelle convergent les éléments de tresse qui se déroulent des bobines (4, 5, 6 et 7) portées par les supports (8 et 9).Two supports (8 and 9) mounted on parallel axes (10 and 11) one have two parallel arms (24 and 25) and the other of the raceway portions (20 and 21). The supply coil (26) of the core of the braid is mounted on the carriage (23) which rolls on the raceway (20, 21) remaining at the lower part thereof. The mandrel (28) integral with the carriage (23) guides the core wire of the braid towards the braiding die (3) towards which converge the braid elements which unwind from the spools (4, 5, 6 and 7) carried by the supports (8 and 9).

Description

On sait que dans les tresseuses de construc­tion classique, une des deux nappes coniques décrites par les éléments de tresse provenant de chacun des deux groupes de porte-bobines a comme directrice un cercle centré sur l'axe de tressage, tandis que l'autre nappe a pour directrice, du fait de la mise en action pério­dique d'un jeu de leviers se déplaçant radialement, une courbe fermée qui est également centrée sur l'axe de tressage, mais qui a une forme lobée. Ces machines sont compliquées et bruyantes. On note que la vitesse des porte-bobines sur leur support le long de leurs orbites est limitée.It is known that in conventional braiding machines, one of the two conical plies described by the braid elements coming from each of the two groups of spool carriers has as its director a circle centered on the braiding axis, while the other ply has for its direction, due to the periodic actuation of a set of levers moving radially, a closed curve which is also centered on the braiding axis, but which has a lobed shape. These machines are complicated and noisy. It is noted that the speed of the reel holders on their support along their orbits is limited.

On a déjà cherché à remédier à ces inconvé­nients et, dans ce but, le brevet anglais GB 1 299 611 décrit un agencement de tresseuse dans lequel les por­te-bobines prévus pour les éléments de tresses décri­vent différentes courbes fermées, en général des cer­cles, en étant guidés sur des voie de roulement qui se croisent et qui sont équipées de moyens de propulsion. Cette disposition évite la forme de courbe lobée et les effets d'inertie qui en découlent, mais l'entraînement de chariots le long de voies de roulement crée des com­plications constructives qui empêchent d'atteindre la stabilité désirable avec les constructions de ce type.We have already sought to remedy these drawbacks and, to this end, the English patent GB 1 299 611 describes a braiding arrangement in which the bobbin carriers provided for the braid elements describe different closed curves, generally circles, in being guided on crossing tracks which are equipped with propulsion means. This arrangement avoids the shape of a lobed curve and the inertia effects which result therefrom, but the carriage of carriages along running tracks creates constructive complications which prevent achieving the desired stability with constructions of this type.

Selon une proposition antérieure (brevet britannique GB 853 454), les porte-bobines pour les éléments de tresse sont répartis sur deux supports ro­tatifs; ceux-ci sont disposés de manière que les surfaces décrites par les éléments de tresse provenant des bobines montées sur chaque support et le support correspondant délimitent deux volumes fermés qui s'interpénètrent. Une bobine débitrice de l'âme de la tresse est logée dans l'espace ainsi défini qui est commun aux deux volumes.According to an earlier proposal (British patent GB 853,454), the spool holders for the braid elements are distributed on two rotary supports; these are arranged so that the surfaces described by the braid elements coming from the coils mounted on each support and the corresponding support delimit two closed volumes which interpenetrate. A braid core reel is housed in the space thus defined which is common to both volumes.

Topologiquement, cette disposition est favo­rable, mais le document mentionné ci-dessus ne suggère pas une solution mécaniquement fiable pour le maintien de la bobine débitrice de l'âme de la tresse. Le sup­port de cette bobine est tenu en place par l'action conjointe des deux supports sur lesquels les porte-bo­bines des éléments de tresse sont montés, de sorte qu'il est à la merci d'effets de frottement et d'effets d'inertie. De plus, l'exécution se complique énormément si le nombre des bobines des éléments de tresses est supérieur à deux.Topologically, this arrangement is favorable, but the document mentioned above does not suggest a mechanically reliable solution for maintaining the supply coil of the core of the braid. The support of this spool is held in place by the joint action of the two supports on which the spool holders of the braid elements are mounted, so that it is at the mercy of friction effects and inertia. In addition, the execution becomes enormously complicated if the number of coils of the braid elements is greater than two.

La présente invention propose une solution qui se distingue mécaniquement de celle décrite dans le document britannique GB 853 454 tout en reprenant la même disposition topologique des divers éléments en présence.The present invention provides a solution which differs mechanically from that described in the British document GB 853 454 while using the same topological arrangement of the various elements present.

Dans ce but, l'invention a pour objet une tresseuse comportant un bâti, une bobine débitrice d'une âme de tresse, un moyen de maintien de la bobine débitrice d'âme de tresse, deux supports rotatifs, tournant autour d'axes déterminés par rapport au bâti, et des porte-bobines d'éléments de tresse montés sur chacun des dits supports et portant chacun une bobine débitrice d'un élément de tresse se déroulant de la bobine, le tout disposé de manière que les éléments de tresse provenant des bobines montées sur chaque support et les supports délimitent ensemble deux volumes fermés qui s'interpénètrent, et comportent une partie commune, le moyen de maintien maintenant la dite bobine débitrice d'âme de tresse dans une position déterminée à l'intérieur de la dite partie commune, caractérisée en ce que le moyen de maintien comporte un moyen d'action à distance.To this end, the subject of the invention is a braiding machine comprising a frame, a coil supplying a braid core, a means for holding the coil supplying a braid core, two rotary supports, rotating around determined axes relative to the frame, and spool carriers of braid elements mounted on each of said supports and each carrying a spool supplying a braid element unwinding from the spool, the whole arranged so that the braid elements coming from coils mounted on each support and the supports together delimit two closed volumes which interpenetrate, and have a common part, the means for holding the said braid core supply coil in a determined position inside said common part, characterized in that the holding means comprises a means of remote action.

On va décrire ci-après, à titre d'exemple, différentes formes d'exécution de l'objet de l'inven­tion en se référant au dessin annexé, dont

  • les fig. 1 et 2 sont des vues schématiques en coupe, respectivement par des plans I-I et II-II montrant une première forme d'exécution,
  • la fig. 3 est une vue en coupe générale sem­blable à la fig. 2 d'une variante d'exécution de cette première forme de réalisation,
  • la fig. 4 est une vue du même genre que la fig. 3 montrant une autre variante de réalisation,
  • la fig. 5 est une vue schématique d'une deu­xième forme d'exécution de la tresseuse selon l'inven­tion,
  • la fig. 6 est une vue schématique d'une troisième forme d'exécution, et
  • la fig. 7 une vue schématique d'une quatriè­me forme d'exécution.
We will describe below, by way of example, different embodiments of the subject of the invention with reference to the accompanying drawing, of which
  • fig. 1 and 2 are schematic sectional views, respectively through planes II and II-II showing a first embodiment,
  • fig. 3 is a general sectional view similar to FIG. 2 of an alternative embodiment of this first embodiment,
  • fig. 4 is a view of the same kind as FIG. 3 showing another alternative embodiment,
  • fig. 5 is a schematic view of a second embodiment of the braider according to the invention,
  • fig. 6 is a schematic view of a third embodiment, and
  • fig. 7 is a schematic view of a fourth embodiment.

Aux fig. 1 et 2, un bâti de tresseuse com­porte un support 1 d'une bobine réceptrice de tresse 2 sithé en aval d'une filière de tressage 3 placée au point de tressage. La disposition générale de la machi­ne est horizontale. Des bobines portant des éléments de tresse, au nombre de quatre, sont réparties avec leur porte-bobines 4, 5, 6 et 7 par paires sur deux supports 8 et 9 (fig. 1) dont les parties principales sont des barres rectilignes fixées à leur centre sur des élé­ments d'arbre 10 et 11. Ces deux éléments d'arbre 10 et 11 tournent dans des paliers fixes 12, 13, 14 et 15. Ils sont disposés horizontalement et symétriquement par rapport à l'axe de tressage, c'est-à-dire par rapport à une ligne horizontale coaxiale à la filière de tressage 3. Des pignons 16, 17 et 18 transmettent un mouvement de rotation aux arbres 10 et 11 à partir d'un moteur 19, de manière que les arbres 10 et 11 tournent en sens inverse, comme indiqué par les flèches de la fig. 1.In fig. 1 and 2, a braiding frame comprises a support 1 of a braid receiving coil 2 sithé downstream of a braiding die 3 placed at the braiding point. The general layout of the machine is horizontal. Coils carrying braid elements, four in number, are distributed with their reel holders 4, 5, 6 and 7 in pairs on two supports 8 and 9 (fig. 1) the main parts of which are straight bars fixed to their center on shaft elements 10 and 11. These two shaft elements 10 and 11 rotate in fixed bearings 12, 13, 14 and 15. They are arranged horizontally and symmetrically with respect to the braiding axis, c that is to say with respect to a horizontal line coaxial with the braiding die 3. Pinions 16, 17 and 18 transmit a rotational movement to the shafts 10 and 11 from a motor 19, so that the shafts 10 and 11 rotate in opposite directions, as indicated by the arrows in fig. 1.

A chaque extrémité du bras 8 est fixée une demi-enceinte rigide 20, 21. Celles-ci forment ensemble un chemin de roulement cylindrique d'axe horizontal in­terrompu seulement sur deux passages diamétralement op­posés où subsistent des fentes de faible largeur. Sur sa face intérieure, chacun des chemins de roulement 20 ou 21 comporte deux rails 22, de sorte qu'un chariot 23, monté sur des paires de galets 23a, est maintenu par la force de gravitation en permanence dans la par­tie la plus basse du chemin de roulement 20 et 21 lors­que le support est entraîné avec l'arbre 10.At each end of the arm 8 is fixed a rigid half-enclosure 20, 21. These together form a cylindrical raceway with a horizontal axis interrupted only on two diametrically opposite passages where there remain slots of small width. On its inner face, each of the raceways 20 or 21 comprises two rails 22, so that a carriage 23, mounted on pairs of rollers 23a, is maintained by the gravitational force permanently in the lowest part of the raceway 20 and 21 when the support is driven with the shaft 10.

Sur la génératrice centrale de chacune des demi-enceintes 20, 21 sont fixés des oeillets de guida­ge 33 pour les éléments de tresse se déroulant à partir des porte-bobines 4 et 5.On the central generator of each of the half-enclosures 20, 21 are fixed guide eyelets 33 for the braid elements unwinding from the reel holders 4 and 5.

Le support 9 comporte, outre la barre diamé­trale déjà mentionnée et dont la longueur est la même que celle de la barre 8, deux bandes 24 et 25 qui sont également munies d'oeillets 33 permettant de guider les éléments de tresse se déroulant des bobines 6 et 7. Ces bandes 24 et 25 et leurs oeillets respectifs sont agen­cés de façon que, lorsque les supports 8 et 9 tournent en sens inverse, les bandes 24 et 25 passent alternati­vement dans les fentes formées entre les parties de chemins de roulement 20 et 21. Elles pénètrent alors à l'intérieur du volume délimité par ces chemins de roulement. Ainsi, le chariot 23 qui, sous l'effet de son poids, roule sur les rails 22 lorsque le support 8 tourne, se trouve constamment maintenu dans une posi­tion stable à l'intérieur de l'espace qui est commun aux deux volumes délimités par les supports 8 et 9, et les surfaces coniques définies par les éléments de tresse qui partent des bobines de tresse passent par les oeillets 33 et aboutissent au point de tressage 3.The support 9 comprises, in addition to the diametral bar already mentioned and the length of which is the same as that of the bar 8, two bands 24 and 25 which are also provided with eyelets 33 making it possible to guide the braid elements unwinding from the reels 6 and 7. These bands 24 and 25 and their respective eyelets are arranged so that, when the supports 8 and 9 rotate in opposite directions, the bands 24 and 25 pass alternately through the slots formed between the parts of the raceways 20 and 21 They then penetrate inside the volume delimited by these raceways. Thus, the carriage 23 which, under the effect of its weight, rolls on the rails 22 when the support 8 rotates, is constantly maintained in a stable position inside the space which is common to the two volumes delimited by the supports 8 and 9, and the conical surfaces defined by the braid elements which start from the braid coils pass through the eyelets 33 and end at the braiding point 3.

La bobine débitrice de l'âme de la tresse désignée par 26 et montée sur le support 23 se déroule régulièrement pendant que la bobine 2 est entraînée en rotation.The braid core delivery coil designated by 26 and mounted on the support 23 takes place regularly while the coil 2 is rotated.

Comme on le voit à la fig. 2, le chariot 23 peut être équipé d'un bras 27 supportant un oeillet de guidage 28 pour l'âme de la tresse.As seen in fig. 2, the carriage 23 can be equipped with an arm 27 supporting a guide eyelet 28 for the core of the braid.

Bien entendu, au lieu que chaque support 8 ou 9 soit équipé de deux porte-bobines 6 et 7 ou 4 et 5, on pourrait également prévoir des supports à trois bras radiaux ou plus, distribués de façon régulière au­tour des arbres 10 et 11 et portant chacun à leur ex­trémité extérieure soit un élément de chemin de roule­ment, comme les éléments 20 et 21, soit une bande orientée axialement comme les bandes 24 et 25.Of course, instead of each support 8 or 9 being equipped with two reel holders 6 and 7 or 4 and 5, one could also provide supports with three or more radial arms, distributed regularly around the shafts 10 and 11 and each carrying at their outer end either a track element, like the elements 20 and 21, or an axially oriented band like the bands 24 and 25.

La disposition représentée à la fig. 3 est très semblable à celle qui vient d'être décrite. On no­tera toutefois que les bras radiaux 8 et 9, qui rempla­cent ici les bras de la première variante, sont orien­tés obliquement par rapport aux arbres 10 et 11 dans le plan contenant l'axe de l'arbre. Cette disposition per­met de rapprocher les axes des arbres 10 et 11 et, par conséquent, de gagner de la place pour l'espace commun aux deux volumes définis par les supports et les enve­loppes décrites par les éléments de tresse provenant des bobines montées sur chaque support. Dans cette va­riante, les bras axiaux 24 et 25, de même que les élé­ments des chemins de roulement 20 et 21, portent sur leur face extérieure les porte-bobines 4, 5, 6 7 pour les éléments de tresse.The arrangement shown in fig. 3 is very similar to the one just described. Note however that the radial arms 8 and 9, which here replace the arms of the first variant, are oriented obliquely with respect to the shafts 10 and 11 in the plane containing the axis of the shaft. This arrangement allows the axes of the shafts 10 and 11 to be brought closer and, consequently, to save space for the space common to the two volumes defined by the supports and the envelopes described by the braid elements coming from the coils mounted on each support. . In this variant, the axial arms 24 and 25, as well as the elements of the raceways 20 and 21, carry on their outer face the reel carriers 4, 5, 6 7 for the braid elements.

La fig. 4 représente une autre variante ba­sée sur la même construction et dans laquelle les deux supports ont pratiquement la même forme que dans la va­riante de la fig. 3. En revanche, dans cette variante, les arbres 10 et 11 sont des arbres creux. Les por­te-bobines pour les éléments de tresse 4, 5, 6 et 7 sont ici regroupées sur des plateaux circulaires 29 et 30 qui sont fixés respectivement aux extrémités arriè­res des arbres 10 et 11, de sorte que les éléments de tresse se déroulant des bobines passent au centre des arbres et sont guidés ensuite par des galets pour par­venir sur les bords extérieurs des bras 24 et 25 ou des portions de chemins de roulement 20 ou 21 tournés vers la filière de tressage.Fig. 4 shows another variant based on the same construction and in which the two supports have practically the same shape as in the variant of FIG. 3. On the other hand, in this variant, the shafts 10 and 11 are hollow shafts. Spool holders for braid elements 4, 5, 6 and 7 here are grouped together on circular plates 29 and 30 which are fixed respectively to the rear ends of the shafts 10 and 11, so that the braid elements unwinding from the reels pass through the center of the shafts and are then guided by rollers to reach the outer edges of the arms 24 and 25 or portions of raceways 20 or 21 facing the braiding die.

La fig. 5 montre schématiquement une dispo­sition dans laquelle les deux supports 8 et 9 sont mon­tés sur des arbres 31 et 32 qui ne sont pas parallèles, mais dont les axes font entre eux un angle et se cou­pent au point de tressage défini par la filière de tressage 3.Fig. 5 schematically shows an arrangement in which the two supports 8 and 9 are mounted on shafts 31 and 32 which are not parallel, but whose axes form an angle between them and intersect at the braiding point defined by the braiding die 3 .

Dans ce cas également, les arbres 31 et 32 sont des arbres creux et les porte-bobines des éléments de tresse 4, 5, 6 et 7 sont montés sur des disques 29 et 30 solidaires respectivement des arbres 31 et 32. On note que l'arbre 31 est disposé horizontalement, de sorte que les chemins de roulement partiels 20 et 21 sont situés dans un plan vertical et le chariot 23 est maintenu par la force de gravitation au point le plus bas de ce chemin de roulement. De ce fait, l'arbre 32 sera placé obliquement, son axe étant dirigé vers le haut et situé dans un plan vertical contenant l'axe de l'arbre 31.In this case also, the shafts 31 and 32 are hollow shafts and the reel holders of the braid elements 4, 5, 6 and 7 are mounted on discs 29 and 30 integral respectively with the shafts 31 and 32. It is noted that the 'shaft 31 is arranged horizontally, so that the partial raceways 20 and 21 are located in a vertical plane and the carriage 23 is held by the gravitational force at the lowest point of this raceway. As a result, the shaft 32 will be placed obliquely, its axis being directed upwards and situated in a vertical plane containing the axis of the shaft 31.

On va décrire maintenant une troisième forme d'exécution qui est représentée de façon schématique à la fig. 6 et dans laquelle les contraintes quant à la disposition des supports de bobines par rapport à la direction verticale sont différentes.We will now describe a third embodiment which is shown schematically in FIG. 6 and in which the constraints as to the arrangement of the coil supports relative to the vertical direction are different.

On retrouve à la fig. 6 la bobine réceptrice de tresse 2 avec ses moyens d'entraînement et son sup­port 1, ainsi que la filière de tressage 3. Au lieu d'être horizontale, la disposition est maintenant verticale.We find in fig. 6 the braid take-up reel 2 with its drive means and its support 1, as well as the braiding die 3. Instead of being horizontal, the arrangement is now vertical.

La machine comporte deux supports 34 et 35 pour les porte-bobines des éléments de tresse. Ces deux supports 34 et 35 sont ici de contruction semblable et sont disposés symétriquement dans un plan vertical. Leurs arbres 36 et 37, analogues aux arbres 31 et 32, sont dirigés vers le point de tressage. Chaque support 34 ou 35 comporte deux bras diamétralement opposés 38 et 39 qui s'étendent obliquement vers la filière de tressage et qui se prolongent par deux tiges de guidage 40 et 41. Deux porte-bobines 42 et 43 sont montés sur les côtés extérieurs des deux bras 38 et 39. Les élé­ments de tresse se déroulent à partir des bobines, 4, 5, 6 et 7, de façon à passer dans des oeillets 44 et à aboutir au point de tressage 3 en définissant ainsi deux volumes qui sont fermés par les bras 38 et 39 et qui s'interpénètrent.The machine has two supports 34 and 35 for the reel holders of the braid elements. These two supports 34 and 35 are here of similar construction and are arranged symmetrically in a vertical plane. Their trees 36 and 37, similar to trees 31 and 32, are directed towards the braiding point. Each support 34 or 35 comprises two diametrically opposite arms 38 and 39 which extend obliquely towards the braiding die and which are extended by two guide rods 40 and 41. Two reel holders 42 and 43 are mounted on the outer sides of the two arms 38 and 39. The braid elements are unwound from the coils, 4, 5, 6 and 7, so as to pass through eyelets 44 and reach the braiding point 3, thus defining two volumes which are closed by the arms 38 and 39 and which interpenetrate.

Les deux supports 34 et 35 étant de cons­truction identique, ils seront simplement positionnés par rapport à leurs moyens d'entraînement, de façon à ne jamais se trouver dans le même plan.The two supports 34 and 35 being of identical construction, they will simply be positioned relative to their drive means, so as never to be in the same plane.

Dans cette forme d'exécution, la bobine 45 qui débite le fil d'âme 46 de la tresse est montée sur un porte-bobine 47 dont les flancs portent des disposi­tifs de serrage 48 à action électromagnétique agissant sur une barre 49 qui s'étend le long de la bobine 45. Cette barre peut être munie d'un galet. Elle joue le rôle d'un frein, le dispositif 48 étant à commande électronique à distance à partir d'un élément de com­mande et de réglage 50 et le support de bobine 47 étant équipé d'un détecteur qui repère la position en hauteur ou la vitesse de déroulement de la bobine 45. Ainsi, les éléments 47, 48 et 50 permettent de régler la force de freinage exercée par la barre 49, de telle façon que la bobine 45 suspendue à l'âme 46 de la tresse se main­ tient à hauteur constante ou se déroule à une vitesse synchronisée avec la vitesse d'enroulement de la bobine réceptrice 2. De ce fait, l'ensemble 47 reste dans une position stabilisée à l'intérieur de l'espace commun aux deux volumes délimités par les éléments de tresse et leur support. Ce maintien en position a lieu sous l'action de la commande électronique à distance réglée par le dispositif 50.In this embodiment, the coil 45 which delivers the core wire 46 from the braid is mounted on a coil holder 47, the sides of which carry clamping devices 48 with electromagnetic action acting on a bar 49 which extends along the coil 45. This bar may be provided with a roller. It plays the role of a brake, the device 48 being electronically controlled remotely from a control and adjustment element 50 and the coil support 47 being equipped with a detector which locates the height position or the unwinding speed of the reel 45. Thus, the elements 47, 48 and 50 make it possible to adjust the braking force exerted by the bar 49, so that the reel 45 suspended from the core 46 of the braid is hand holds at constant height or takes place at a speed synchronized with the winding speed of the take-up reel 2. As a result, the assembly 47 remains in a stabilized position inside the space common to the two volumes delimited by the braid elements and their support. This holding in position takes place under the action of the electronic remote control adjusted by the device 50.

Enfin, on décrira une quatrième forme d'exé­cution de l'objet de l'invention qui est représentée de façon également schématique à la fig. 7.Finally, a fourth embodiment of the object of the invention will be described, which is also shown schematically in FIG. 7.

On retrouve à cette figure une disposition comportant deux supports de bobine 34 et 35 et un sup­port 1 pour la bobine réceptrice de tresse 2, qui est exactement semblable à ce qui est représenté à la fig. 6. On retrouve donc sur chacun des deux supports 34 et 35 des porte-bobines 42, 43 et les bras 40 ou 41 paral­lèles à l'arbre respectif 36 ou 37.This figure shows an arrangement comprising two reel supports 34 and 35 and a support 1 for the braid take-up reel 2, which is exactly similar to what is shown in FIG. 6. Thus, on each of the two supports 34 and 35, there are reel carriers 42, 43 and the arms 40 or 41 parallel to the respective shaft 36 or 37.

Bien entendu, dans cette forme d'exécution comme dans la forme d'exécution de la fig. 6, le nombre des bras 38, 39 sur chaque support pourrait être supé­rieur à 2. On notera que les possibilités d'augmenter le nombre des bras et, par conséquent, des por­te-bobines pour les éléments de tresse sont ici plus facilement réalisables que dans les formes d'exécution où le support de la bobine débitrice du fil d'âme est conformé en chariot roulant sur un chemin de roulement.Of course, in this embodiment as in the embodiment of FIG. 6, the number of arms 38, 39 on each support could be greater than 2. It will be noted that the possibilities of increasing the number of arms and, consequently, of reel holders for the braid elements are here more easily achievable than in embodiments where the support of the core thread supplying coil is shaped like a rolling carriage on a raceway.

Dans la forme d'exécution décrite ici, le fil d'âme 46, qui se dévide de la bobine 45, s'étend verticalement à l'aval de la filière de tressage 3 et légèrement en oblique à l'amont de cette filière, comme dans la disposition de la fig. 6. La bobine 45 pivote sur un support 51 qui comporte simplement un palier et un carénage 52. Ce carénage 52 coopère avec un disposi­tif de propulsion d'un fluide qui est représenté en 53 sous forme d'une tuyère, mais qui pourrait, le cas échéant, avoir la forme d'une couronne d'axe vertical avec plusieurs jets.In the embodiment described here, the core wire 46, which unwinds from the spool 45, extends vertically downstream of the braiding die 3 and slightly obliquely upstream of this die, as in the arrangement of fig. 6. The coil 45 pivots on a support 51 which simply comprises a bearing and a fairing 52. This fairing 52 cooperates with a device for propelling a fluid which is represented at 53 in the form of a nozzle, but which could, if necessary, have the shape of a crown of vertical axis with several jets.

Des jets peuvent aussi être fixés sur les demi-enceintes telles que les éléments 20 et 21 de la fig. 1, ce qui représente une forme d'exécution d'axe horizontal dans laquelle le chariot 23 est remplacé par un support flottant sur coussin d'air.Jets can also be fixed on the half-enclosures such as the elements 20 and 21 of FIG. 1, which represents an embodiment of a horizontal axis in which the carriage 23 is replaced by a floating support on an air cushion.

Le dispositif de propulsion 53 ou les jets décrits seront alimentés de préférence en air sous pression et créeront un coussin porteur pour le support de bobine 51.The propulsion device 53 or the jets described will preferably be supplied with pressurized air and will create a carrier cushion for the coil support 51.

On notera qu'un dispositif de sustentation électromagnétique pourrait également être prévu en lieu et place du dispositif de support à coussin d'air re­présenté ici.Note that an electromagnetic lift device could also be provided in place of the air cushion support device shown here.

Ainsi, par l'emploi d'un moyen d'action à distance utilisant la force de gravitation ou un autre champ de force, la bobine débitrice du fil d'âme de tresse est maintenue en position à l'intérieur de l'es­pace entièrement fermé défini par l'interpénétration des deux volumes définis par les supports des éléments de tresse et les surfaces décrites par les éléments de tresse eux-mêmes lorsqu'ils aboutissent au point de tressage. La stabilisation de la position de cette bo­bine est obtenue par des moyens sûrs et pratiques, fa­ciles à réaliser.Thus, by the use of a means of remote action using the gravitational force or another force field, the supply coil of the braid core wire is held in position inside the space entirely closed defined by the interpenetration of the two volumes defined by the supports of the braid elements and the surfaces described by the braid elements themselves when they reach the braiding point. Stabilization of the position of this coil is obtained by safe and practical means, easy to perform.

Claims (6)

1. Tresseuse comportant un bâti, une bobine débitrice d'une ame de tresse, un moyen de maintien de la bobine débitrice d'âme de tresse, deux supports ro­tatifs, tournant autour d'axes déterminés par rapport au bâti, et des porte-bobines d'éléments de tresse mon­tés sur chacun des dits supports et portant chacun une bobine débitrice d'un élément de tresse se déroulant de la bobine, le tout disposé de manière que les éléments de tresse provenant des bobines montées sur chaque sup­port et les supports délimitent ensemble deux volumes fermés qui s'interpénètrent, et comportent une partie commune, le moyen de maintien maintenant la dite bobine débitrice d'âme de tresse dans une position déterminée à l'intérieur de la dite partie commune,c aractérisée en ce que le moyen de maintien comporte un moyen d'ac­tion à distance.1. Braider comprising a frame, a coil for supplying a braid core, a means for holding the coil for supplying a braid core, two rotary supports, rotating around axes determined with respect to the frame, and holders coils of braid elements mounted on each of said supports and each carrying a coil supplying a braid element unwinding from the coil, the whole arranged so that the braid elements coming from the coils mounted on each support and the supports together delimit two closed volumes which interpenetrate, and comprise a common part, the means for holding the said braid core delivery coil in a determined position inside the said common part, characterized in that the holding means comprises a means of remote action. 2. Tresseuse selon la revendication 1, ca­ractérisée en ce qu'un des supports comporte une voie de roulement coaxiale au support, en ce qu'un chariot portant la bobine débitrice d'âme est guidé par cette voie de roulement, et en ce que ledit moyen d'action à distance est agencé pour maintenir le chariot dans une position stable par rapport au bâti de la tresseuse durant la rotation du support qui comporte la voie de roulement.2. braiding machine according to claim 1, characterized in that one of the supports has a rolling path coaxial with the support, in that a carriage carrying the core delivery coil is guided by this rolling path, and in that said remote action means is arranged to maintain the carriage in a stable position relative to the frame of the braider during the rotation of the support which comprises the track. 3. Tresseuse selon la revendication 2, ca­ractérisée en ce que la voie de roulement s'étend selon une surface cylindrique ou conique, en ce que l'axe de rotation du support muni de la voie de roulement est horizontal ou oblique, et en ce que ledit moyen d'ac­tion à distance est le champ de gravitation, la tres­ seuse étant agencée de manière que le champ de gravita­tion maintienne le chariot et la bobine débitrice d'â­me, au point le plus bas de la voie de roulement.3. braiding machine according to claim 2, characterized in that the track extends on a cylindrical or conical surface, in that the axis of rotation of the support provided with the track is horizontal or oblique, and in that that said means of action at a distance is the gravitational field, the very threshold being arranged so that the gravitational field maintains the carriage and the core-supplying coil, at the lowest point of the track. 4. Tresseuse selon la revendication 1, ca­ractérisée en ce que la bobine débitrice de l'âme est montée rotativement sur un réceptacle et en ce que le moyen d'action à distance est un flux de gaz dirigé sur le réceptacle.4. braiding machine according to claim 1, characterized in that the core supply coil is rotatably mounted on a receptacle and in that the remote action means is a flow of gas directed onto the receptacle. 5. Tresseuse selon la revendication 1, ca­ractérisée en ce que le moyen d'action à distance est un dispositif de sustentation magnétique, électrostati­que ou électromagnétique agissant sur un support de la bobine débitrice d'âme de tresse.5. braider according to claim 1, characterized in that the remote action means is a magnetic, electrostatic or electromagnetic levitation device acting on a support of the braid core supply coil. 6. Tresseuse selon la revendication 1, ca­ractérisée en ce que le moyen d'action à distance com­porte un moyen de commande d'une action de freinage réglant la vitesse de rotation de la bobine débitrice d'âme par rapport à son porte-bobine.6. braiding machine according to claim 1, characterized in that the remote action means comprises a means for controlling a braking action regulating the speed of rotation of the core-feeding reel relative to its reel holder.
EP90810589A 1989-08-17 1990-08-03 Braiding machine Expired - Lifetime EP0413658B1 (en)

Applications Claiming Priority (2)

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CH300889 1989-08-17
CH3008/89 1989-08-17

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US8397611B2 (en) * 2010-07-16 2013-03-19 DVM Tecnologia S.A.S Machine and method with magnets for plaiting threads
US8261648B1 (en) 2011-10-17 2012-09-11 Sequent Medical Inc. Braiding mechanism and methods of use
US8826791B2 (en) 2011-10-17 2014-09-09 Sequent Medical, Inc. Braiding mechanism and methods of use
JP6937327B2 (en) 2016-03-17 2021-09-22 スワミナサン ジャヤラマン Anatomical blockage
CN109853127A (en) * 2017-11-30 2019-06-07 多彩隆纺织制品(深圳)有限公司 Seamless braider and weaving method around yarn rope

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GB853454A (en) * 1956-01-16 1960-11-09 Charles Maria Wahl Improvements in and relating to winding apparatus
GB1299611A (en) * 1969-06-26 1972-12-13 British Insulated Callenders Improvements in braiding machines
CH636146A5 (en) * 1978-04-18 1983-05-13 Ernst F Voegeli Braiding machine
EP0321406A1 (en) * 1987-12-16 1989-06-21 Charles Maillefer Braiding machine

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US1913292A (en) * 1930-11-04 1933-06-06 Schweiter Hans Braiding machine for covering wires
US2931162A (en) * 1956-01-17 1960-04-05 Wahl Brothers Winding machinery
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Publication number Priority date Publication date Assignee Title
GB853454A (en) * 1956-01-16 1960-11-09 Charles Maria Wahl Improvements in and relating to winding apparatus
GB1299611A (en) * 1969-06-26 1972-12-13 British Insulated Callenders Improvements in braiding machines
CH636146A5 (en) * 1978-04-18 1983-05-13 Ernst F Voegeli Braiding machine
EP0321406A1 (en) * 1987-12-16 1989-06-21 Charles Maillefer Braiding machine

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DE69005396T2 (en) 1994-06-23
EP0413658B1 (en) 1993-12-22
DE69005396D1 (en) 1994-02-03
US5176062A (en) 1993-01-05

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