EP1397544B1 - Needling loom feeding with continuous helical strip - Google Patents

Needling loom feeding with continuous helical strip Download PDF

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Publication number
EP1397544B1
EP1397544B1 EP02727699A EP02727699A EP1397544B1 EP 1397544 B1 EP1397544 B1 EP 1397544B1 EP 02727699 A EP02727699 A EP 02727699A EP 02727699 A EP02727699 A EP 02727699A EP 1397544 B1 EP1397544 B1 EP 1397544B1
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EP
European Patent Office
Prior art keywords
strip
needling
textile material
drive
machine according
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EP02727699A
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German (de)
French (fr)
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EP1397544A1 (en
Inventor
Renaud Duval
Thierry Marjollet
Robert Jean
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Safran Landing Systems SAS
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Messier Bugatti SA
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00Needling machines
    • D04H18/02Needling machines with needles
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00Needling machines

Definitions

  • the helical chute for feeding said unwound strip of textile material to said needling table is integral with the frame of the machine and formed in two successive parts separated by a space for the passage of cutting means of said strip.
  • the machine may further comprise, downstream of said downstream drive assembly, a dancer roll hinged to said frame and intended to guarantee a regular tension on said unwound strip of textile material after its cutting by said cutting means and before its recovery at said needling table by said friction drive means.
  • a dancer roll hinged to said frame intended to guarantee a regular tension on said unwound strip of textile material after its cutting by said cutting means and before its recovery at said needling table by said friction drive means.
  • Each drive assembly comprises a plurality of rollers arranged one behind the other so as to marry at best the helical shape of said feed chute of said unwound strip of textile material.
  • the storage basket comprises a central shaft rotating on an axis of rotation at the bottom of which (backplane) is fixed a receiving plate provided with openings for receiving said conical drive rollers of said wound strip of textile material.
  • the figure 1 schematically illustrates a needling machine circular type for needling a textile structure, or annular preform, prepared from a rolled strip, of fabric or nonwoven fabric, a textile material needling and provided with an automatic feeding device according to the invention.
  • the supply means 12 of the material to needling comprise a storage basket 40 containing a wound band of textile material 42 and formed of a central shaft 44 of axis of rotation C at the bottom of which (also called backplane 44a) is fixed a series of fins 46a-46f perforated receiving tray and intended, especially during transport, to support the band wound around the central shaft.
  • FIG. figure 5 shows his training in a first embodiment.
  • Each drive assembly 70, 72 comprises at least two, preferably three, rollers 74a, 74b, 74c, 76a, 76b, 76c each mounted on a support secured to the frame 50 and interconnected by a drive belt 82, 84 which ensures the training of the textile web along the twist.
  • the choice of the number of rollers to be implemented is essentially a function of the dimensions of the chute themselves linked to the overall size of the needling machine.
  • the rollers are arranged one behind the other so as to marry at best the helical shape of the chute.
  • Each geared motor unit 78, 80 is connected to one 74a, 76a of the rollers of each drive unit by means of a universal joint 86, 88.
  • a dancer roll 90 articulated on the frame 50 and intended to guarantee a regular tension on the unwound strip of textile material 42 after its cutting by the cutting means and before its recovery at the needling table 14 by one of the conical drive rollers 20.
  • any possible slack of this unwound tape is eliminated and the rate of needling can then be precisely controlled.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Finger-Pressure Massage (AREA)
  • Sewing Machines And Sewing (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Screw Conveyors (AREA)

Abstract

A machine for needling a textile structure built up from a wound strip of material to be needled that is delivered by strip supply means comprising a storage drum containing said wound strip of textile material, an unwinding assembly for continuously extracting said strip from said storage drum, and a helical chute or "twist" for taking up said extracted strip unwound from said drum and for bringing it up to a needling table where there are friction drive means. The storage drum and the helical chute have the same axis C as the needling table.

Description

Domaine de l'inventionField of the invention

La présente invention se rapporte au domaine des structures textiles aiguilletées et elle concerne plus particulièrement un dispositif pour l'alimentation automatique en bande textile d'une machine d'aiguilletage de type circulaire.The present invention relates to the field of needled textile structures and more particularly relates to a device for automatically feeding textile web of a circular needling machine.

Art antérieurPrior art

Dans une machine d'aiguilletage de type circulaire, la préforme annulaire à aiguilleter est posée sur une table d'aiguilletage et entraînée en rotation par des moyens d'entraînement, le plus souvent à friction, avec lesquels elle est en contact continu. L'alimentation de ce type de machine est faite à plat au niveau de la table d'aiguilletage à partir d'une bande de matière à aiguilleter débité d'un dispositif de déroulage externe à la machine d'aiguilletage. Cette alimentation à plat pose toutefois une difficulté particulière, notamment lorsqu'il s'agit d'assurer une production de préformes de façon automatique sans intervention manuelle.In a circular type needling machine, the annular preform to needling is placed on a needling table and driven in rotation by drive means, usually friction, with which it is in continuous contact. The feed of this type of machine is made flat at the level of the needling table from a strip of stuffing material cut from a peeling device external to the needling machine. This flat feed however poses a particular difficulty, especially when it comes to ensuring production of preforms automatically without manual intervention.

Objet et définition de l'inventionObject and definition of the invention

La présente invention se propose donc de résoudre ce problème spécifique avec une machine d'aiguilletage intégrant un dispositif d'alimentation automatique. Un but de l'invention est aussi de réaliser un tel dispositif sans modifier de façon notable l'encombrement général d'une machine d'aiguilletage de type circulaire.The present invention therefore proposes to solve this specific problem with a needling machine incorporating an automatic feeding device. An object of the invention is also to provide such a device without significantly modifying the overall size of a circular needling machine.

Ces buts sont atteints par une machine d'aiguilletage d'une structure textile formée à partir d'une bande enroulée de matière à aiguilleter débitée par des moyens de fourniture de bande, caractérisée en ce que lesdits moyens de fourniture de bande comportent un panier de stockage contenant ladite bande enroulée de matière textile, un ensemble de déroulement pour extraire en continu ladite bande dudit panier de stockage, et une goulotte hélicoïdale (twist) pour reprendre ladite bande extraite déroulée dudit panier et l'amener vers une table d'aiguilletage au niveau de moyens d'entraînement à friction. Le panier de stockage et ladite goulotte hélicoïdale ont même axe C que ladite table d'aiguilletage.These objects are achieved by a needling machine of a textile structure formed from a wound strip of needle material dispensed by web supply means, characterized in that said web supply means comprises a basket of a storage container containing said wound web of textile material, an unwinding assembly for continuously extracting said web from said storage basket, and a twist chute for retrieving said pulled web from said basket and feeding it to a needling table at level of friction drive means. The storage basket and said helical chute have the same axis C as said needling table.

Ainsi, avec cette structure particulière, il est possible d'assurer une alimentation en matière textile facile et automatique tout en conservant un même encombrement au sol de la machine d'aiguilletage. En outre, on assure un parfait guidage de la bande jusqu'à la table d'aiguilletage.Thus, with this particular structure, it is possible to ensure an easy and automatic textile feed while maintaining the same footprint of the needling machine. In addition, it ensures a perfect guidance of the band to the needling table.

La goulotte hélicoïdale d'amenée de ladite bande déroulée de matière textile vers ladite table d'aiguilletage est solidaire du châssis de la machine et formée en deux parties successives séparées par un espace pour le passage de moyens de découpe de ladite bande.The helical chute for feeding said unwound strip of textile material to said needling table is integral with the frame of the machine and formed in two successive parts separated by a space for the passage of cutting means of said strip.

La bande déroulée de matière textile est maintenue en contact avec ladite goulotte hélicoïdale pendant son amenée vers ladite table d'aiguilletage par deux ensembles d'entraînement séparés disposés respectivement en amont et en aval desdits moyens de découpe de ladite bande.The unwound strip of textile material is kept in contact with said helical chute during its feed to said needling table by two separate drive assemblies disposed respectively upstream and downstream of said cutting means of said strip.

De préférence, la machine peut comporter en outre, en aval dudit ensemble d'entraînement aval, un rouleau danseur articulé sur ledit châssis et destiné à garantir une tension régulière sur ladite bande déroulée de matière textile après sa découpe par lesdits moyens de découpe et avant sa reprise au niveau de ladite table d'aiguilletagé par lesdits moyens d'entraînement à friction.Preferably, the machine may further comprise, downstream of said downstream drive assembly, a dancer roll hinged to said frame and intended to guarantee a regular tension on said unwound strip of textile material after its cutting by said cutting means and before its recovery at said needling table by said friction drive means.

Chaque ensemble d'entraînement comporte une pluralité de galets disposés les uns derrière les autres de façon à épouser au mieux la forme hélicoïdale de ladite goulotte d'amenée de ladite bande déroulée de matière textile.Each drive assembly comprises a plurality of rollers arranged one behind the other so as to marry at best the helical shape of said feed chute of said unwound strip of textile material.

Avantageusement, chaque ensemble d'entraînement comporte au moins deux galets montés chacun sur un support solidaire dudit châssis et reliés entre eux par une courroie d'entraînement, l'un au moins desdits galets de chaque ensemble étant relié à un groupe moto-réducteur au moyen d'une liaison à cardan.Advantageously, each drive assembly comprises at least two rollers each mounted on a support secured to said frame and connected to each other by a drive belt, at least one of said rollers of each assembly being connected to a geared motor unit at means of a universal joint.

Selon un mode de réalisation préférentiel, le dispositif de déroulement de ladite bande enroulée de matière textile comporte une pluralité de rouleaux coniques entraînés en rotation par friction à partir d'une couronne centrée sur des galets solidaires dudit châssis et mise en rotation par une courroie entraînée par un moteur, et sur lesquels vient reposer ladite bande enroulée de matière textile une fois ledit panier de stockage installé sur ladite machine. Il peut comporter en outre un rouleau presseur maintenu contre l'un desdits rouleaux coniques d'entraînement par un élément élastique agissant en traction de façon à permettre la reprise d'une extrémité libre de ladite bande déroulée de matière textile et son guidage vers ladite goulotte hélicoïdale.According to a preferred embodiment, the unwinding device of said wound strip of textile material comprises a plurality of tapered rollers driven in rotation by friction from a ring centered on rollers integral with said frame and rotated by a driven belt. by a motor, and on which comes to rest said wrapped band of textile material once said storage basket installed on said machine. It may further comprise a roller presser held against one of said conical drive rollers by an elastic member acting in tension so as to allow the recovery of a free end of said unwound strip of textile material and its guidance to said helical chute.

Le panier de stockage comporte un fût central tournant sur un axe de rotation à la partie inférieure duquel (fond de panier) est fixé un plateau de réception muni d'ouvertures pour recevoir lesdits rouleaux coniques d'entraînement de ladite bande enroulée de matière textile.The storage basket comprises a central shaft rotating on an axis of rotation at the bottom of which (backplane) is fixed a receiving plate provided with openings for receiving said conical drive rollers of said wound strip of textile material.

Brève description des dessinsBrief description of the drawings

Les caractéristiques et avantages due la présente invention ressortiront mieux de la description suivante, faite à titre indicatif et non limitatif, en regard des dessins annexés sur lesquels :

  • la figure 1 est une vue générale en élévation d'une machine d'aiguilletage intégrant un dispositif d'alimentation automatique selon l'invention,
  • la figure 1A est une vue de détail de la figure 1 au niveau d'un ensemble de déroulement de la matière textile,
  • la figure 2 est une vue de dessus de la machine d'aiguilletage de la figure 1 montrant l'ensemble de déroulement,
  • la figure 2A illustre un panier de stockage de la matière textile,
  • la figure 3 est une vue selon le plan III de la figure 2,
  • la figure 4 montre des rouleaux de reprise de la matière textile en sortie de l'ensemble de déroulement,
  • la figure 5 montre en perspective l'entraînement de la matière textile au travers d'un premier module d'entraînement selon l'invention,
  • les figures 6A et 6B illustrent un autre mode de réalisation du module d'entraînement de la matière textile, et
  • les figures 7A et 7B illustrent encore un autre mode de réalisation du module d'entraînement de la matière textile.
The features and advantages of the present invention will become more apparent from the following description, given by way of non-limiting indication, with reference to the accompanying drawings in which:
  • the figure 1 is a general elevational view of a needling machine incorporating an automatic feeding device according to the invention,
  • the Figure 1A is a detail view of the figure 1 at the level of a set of unwinding of the textile material,
  • the figure 2 is a top view of the needling machine from the figure 1 showing the set of unfolding,
  • the Figure 2A illustrates a storage basket of the textile material,
  • the figure 3 is a view according to plan III of the figure 2 ,
  • the figure 4 shows rolls of recovery of the textile material at the exit of the unwinding assembly,
  • the figure 5 shows in perspective the drive of the textile material through a first drive module according to the invention,
  • the Figures 6A and 6B illustrate another embodiment of the training module of the textile material, and
  • the Figures 7A and 7B illustrate yet another embodiment of the training module of the textile material.

Description détaillée d'un mode de réalisation préférentielDetailed description of a preferred embodiment

La figure 1 illustre de façon schématique une machine d'aiguilletage de type circulaire destinée à l'aiguilletage d'une structure textile, ou préforme annulaire, élaborée à partir d'une bande enroulée, de tissu ou de non tissé, d'une matière textile à aiguilleter et munie d'un dispositif d'alimentation automatique selon l'invention.The figure 1 schematically illustrates a needling machine circular type for needling a textile structure, or annular preform, prepared from a rolled strip, of fabric or nonwoven fabric, a textile material needling and provided with an automatic feeding device according to the invention.

Cette machine destinée à aiguilleter des structures textiles 10 formées à partir d'une bande d'une matière textile à aiguilleter délivrée en continu par des moyens de fourniture 12 comporte classiquement une table d'aiguilletage 14, formant plateau d'enroulement, sur laquelle va venir se poser cette bande de matière textile et qui est mobile verticalement sous l'action de moyens de transmission de mouvement 16 au fur et à mesure du déroulement de la bande. Des moyens d'entraînement 18 avantageusement constitués de trois rouleaux coniques 20 actionnés chacun par un groupe moto-réducteur indépendant 22 et disposés de préférence à 120° au dessus de cette table, vont ensuite assurer par friction l'entraînement en rotation de cette bande de matière textile sur la table d'aiguilletage.This machine intended to needle textile structures 10 formed from a strip of textile material needling delivered continuously by supply means 12 conventionally comprises a needling table 14, forming a winding plate, on which will This strip of textile material comes into being and which is vertically movable under the action of movement transmission means 16 as the tape unfolds. Drive means 18 advantageously consist of three conical rollers 20 each actuated by an independent geared motor group 22 and preferably arranged at 120 ° above this table, will then frictionally ensure the rotational drive of this band of textile material on the needling table.

L'aiguilletage de la bande est réalisé par une tête d'aiguilletage 24 comportant un nombre déterminé d'aiguilles à barbes et disposée à l'aplomb de la table d'aiguilletage entre deux des trois rouleaux coniques d'entraînement. Pour permettre l'aiguilletage les unes aux autres des différentes couches superposées de matière textile, cette tête d'aiguilletage est animée d'un mouvement alternatif vertical par des moyens conventionnels de déplacement 26. Des moyens de découpe 28 (voir la figure 5) disposés en amont de la zone d'aiguilletage sont aussi prévus pour couper la bande une fois obtenue l'épaisseur finale prédéterminée pour la structure textile (des capteurs non représentés permettent de contrôler précisément cette épaisseur au fur et à mesure de la superposition des différentes couches). Des moyens de commande centrale 30 reliés aux moyens de transmission de mouvement de la table 16, aux moyens d'entraînement de la structure textile 18, aux moyens de déplacement alternatif de la tête 26, et aux moyens de découpe 28 permettent d'assurer les commande et synchronisation nécessaires à l'obtention d'un processus d'aiguilletage continu. Une fois la bande coupée et la structure aiguilletée, des moyens d'évacuation 32 permettent de pousser cette structure hors de la table d'aiguilletage, par exemple vers un tapis convoyeur (non représenté) en vue de son transfert vers un autre poste de la chaîne de production comme un poste de traitement thermique tel que celui illustré par la demande de brevet internationale WO96/33295 et relatif à une densification en piles annulaires.The needling of the strip is performed by a needling head 24 comprising a determined number of barb needles and disposed vertically above the needling table between two of the three tapered drive rollers. In order to enable the different superposed layers of textile material to be needled to each other, this needling head is driven by a vertical reciprocating movement by conventional means of displacement 26. Cutting means 28 (see FIG. figure 5 ) arranged upstream of the needling zone are also provided to cut the strip once obtained the predetermined final thickness for the textile structure (unrepresented sensors allow to control precisely this thickness as the superposition of different layers). Central control means 30 connected to the movement transmission means of the table 16, to the drive means of the textile structure 18, to the reciprocating means of the head 26, and to the cutting means 28 make it possible to ensure the control and synchronization necessary to obtain a continuous needling process. Once the band has been cut and the structure is needled, evacuation means 32 make it possible to push this structure out of the needling table, for example towards a conveyor belt (not shown) with a view to transferring it to another station of the production line as a treatment station thermal such as that illustrated by the international patent application WO96 / 33295 and relating to densification in ring cells.

Selon l'invention et comme l'illustrent les figures 1A et 2A, les moyens de fourniture 12 de la matière à aiguilleter comportent un panier de stockage 40 contenant une bande enroulée de matière textile 42 et formé d'un fût central 44 d'axe de rotation C à la partie inférieure duquel (appelée aussi fond de panier 44a) est fixé une série d'ailettes 46a-46f formant plateau de réception ajouré et destiné, notamment pendant son transport, à supporter la bande enroulée autour du fût central.According to the invention and as illustrated by Figures 1A and 2A , the supply means 12 of the material to needling comprise a storage basket 40 containing a wound band of textile material 42 and formed of a central shaft 44 of axis of rotation C at the bottom of which (also called backplane 44a) is fixed a series of fins 46a-46f perforated receiving tray and intended, especially during transport, to support the band wound around the central shaft.

Le panier de stockage est installé sur la machine d'aiguilletage, dans le même axe C de la table d'aiguilletage, au niveau d'un châssis supérieur 50 de cette machine. Les ouvertures du plateau (entré les ailettes 46a-46f) sont destinées à être traversées par les rouleaux coniques 48a-48f d'un ensemble de déroulement entraîné avantageusement par courroie et réalisant l'extraction de la bande en fond de panier (voir la figure 2). En effet, lorsque le panier est posé sur le châssis, les rouleaux coniques d'entraînement de l'ensemble de déroulement traversent en partie le plateau de réception ajouré formant le fond de ce panier de sorte que ces rouleaux viennent directement en contact avec la matière textile à dérouler.The storage basket is installed on the needling machine, in the same axis C of the needling table, at an upper frame 50 of this machine. The openings of the plate (between the fins 46a-46f) are intended to be traversed by the tapered rollers 48a-48f of a set of unwinding advantageously driven by belt and performing the extraction of the strip backplane (see figure 2 ). Indeed, when the basket is placed on the frame, the tapered drive rollers of the unwinding assembly pass partially through the perforated receiving tray forming the bottom of the basket so that these rollers come directly into contact with the material textile to unroll.

Le déroulement de la bande résulte de la rotation sur eux mêmes des rouleaux coniques d'entraînement de l'ensemble de déroulement, cette rotation étant obtenue par friction à partir d'une couronne 52 centrée sur des galets 54a, 54b, 54c solidaires du châssis de la machine 50 et mise en rotation autour de l'axe C par une courroie 56 entraînée par un moteur 58 (voir la figure 1A) dont le régime est avantageusement régulé à partir des moyens de commande centrale 30, par exemple en fonction de la vitesse de rotation moyenne de la préforme. Bien entendu, le moyen d'entraînement des rouleaux 48 ne saurait être limité au seul système à friction précité, et un entraînement individuel de chaque rouleau par un ensemble moto-réducteur commandé depuis les moyens de commande centrale 30, à l'image de celui 22 utilisé pour les rouleaux coniques 20, est par exemple aussi envisageable.The unwinding of the strip results from the rotation on themselves of the conical rollers driving the unwinding assembly, this rotation being obtained by friction from a ring 52 centered on rollers 54a, 54b, 54c secured to the frame of the machine 50 and rotated about the axis C by a belt 56 driven by a motor 58 (see Figure 1A ) whose rate is advantageously regulated from the central control means 30, for example as a function of the average speed of rotation of the preform. Of course, the driving means of the rollers 48 can not be limited to the only friction system mentioned above, and an individual drive of each roll by a geared motor unit controlled from the central control means 30, in the image of that 22 used for the tapered rollers 20, is for example also possible.

En sortie du panier de stockage et comme le montre la figure 3, l'extrémité libre de la bande déroulée 42 est prise entre un des rouleaux d'entraînement 48b et un rouleau presseur 60, maintenu contre ce rouleau d'entraînement au moyen d'un élément élastique agissant en traction 62 (voir la figure 4), et elle est guidée (avalée) entre les ailettes 46b-46c sous le plateau de réception vers une goulotte hélicoïdale 64, 66 (twist) amenant la matière textile sur la table d'aiguilletage 14 au niveau d'un rouleau d'entraînement conique 20. On notera que la prise initiale de l'extrémité entre rouleau d'entraînement et rouleau presseur est en général effectuée manuellement lors de la mise en place du panier, la suite du déroulement s'effectuant alors automatiquement.At the outlet of the storage basket and as shown in figure 3 the free end of the uncoiled strip 42 is gripped between one of the drive rollers 48b and a press roll 60, held against this driving roller by means of an elastic element acting in traction 62 (see FIG. figure 4 ), and it is guided (swallowed) between the fins 46b-46c under the receiving plate to a helical chute 64, 66 (twist) bringing the textile material to the needling table 14 at a drive roller It will be noted that the initial grip of the end between the driving roller and the pressure roller is generally carried out manually during the setting up of the basket, the rest of the unwinding then taking place automatically.

Le trajet de la bande déroulée le long de la goulotte hélicoïdale depuis son extraction en fond de panier jusqu'à son dépôt sur la table d'aiguilletage est illustré à la figure 5 qui montre son entraînement dans un premier mode de réalisation.The path of the strip unwound along the helical chute from its extraction in the backplane until it is deposited on the needling table is illustrated in FIG. figure 5 which shows his training in a first embodiment.

La goulotte hélicoïdale solidaire du châssis 50 de la machine est formée en deux parties successives 64, 66 séparées seulement par un espace 68 formant saignée pour permettre le passage des moyens de découpe 28. Tout le long de ce trajet, la bande est maintenue en contact avec cette goulotte par des moyens d'entraînement réunis de préférence en deux ensembles séparés 70, 72 disposés respectivement l'un 70 en amont l'autre 72 en aval de ces moyens de découpe 28. Chaque ensemble d'entraînement est de préférence motorisé par un groupe moto-réducteur individuel 78, 80 commandé depuis les moyens de commande centrale 30. Toutefois une motorisation commune est tout aussi envisageable.The helical chute integral with the chassis 50 of the machine is formed in two successive parts 64, 66 separated only by a gap 68 forming a groove to allow the passage of the cutting means 28. All along this path, the strip is kept in contact with this chute by drive means preferably combined in two separate assemblies 70, 72 respectively disposed one upstream 70 the other 72 downstream of these cutting means 28. Each drive assembly is preferably motorized by an individual geared motor group 78, 80 controlled from the central control means 30. However a common motor is equally conceivable.

Chaque ensemble d'entraînement 70, 72 comporte au moins deux, de préférence trois, galets 74a, 74b, 74c ;76a, 76b, 76c montés chacun sur un support solidaire du châssis 50 et reliés entre eux par une courroie d'entraînement 82, 84 qui assure l'entraînement de la nappe textile le long du twist. Le choix du nombre de galets à mettre en oeuvre est essentiellement fonction des dimensions de la goulotte liées elles-mêmes à l'encombrement général de la machine d'aiguilletage. Les galets sont disposés les uns derrière les autres de façon à épouser au mieux la forme hélicoïdale de la goulotte. Chaque groupe moto-réducteur 78, 80 est relié à l'un 74a, 76a des galets de chaque ensemble d'entraînement au moyen d'une liaison à cardan 86, 88.Each drive assembly 70, 72 comprises at least two, preferably three, rollers 74a, 74b, 74c, 76a, 76b, 76c each mounted on a support secured to the frame 50 and interconnected by a drive belt 82, 84 which ensures the training of the textile web along the twist. The choice of the number of rollers to be implemented is essentially a function of the dimensions of the chute themselves linked to the overall size of the needling machine. The rollers are arranged one behind the other so as to marry at best the helical shape of the chute. Each geared motor unit 78, 80 is connected to one 74a, 76a of the rollers of each drive unit by means of a universal joint 86, 88.

En aval de l'ensemble d'entraînement aval 72 est disposé un rouleau danseur 90 articulé sur le châssis 50 et destiné à garantir une tension régulière sur la bande déroulée de matière textile 42 après sa découpe par les moyens de découpe et avant sa reprise au niveau de la table d'aiguilletage 14 par un des rouleaux d'entraînement coniques 20. Ainsi, tout mou éventuel de cette bande déroulée est éliminé et la cadence d'aiguilletage peut être ensuite précisément contrôlée.Downstream of the downstream drive assembly 72 is a dancer roll 90 articulated on the frame 50 and intended to guarantee a regular tension on the unwound strip of textile material 42 after its cutting by the cutting means and before its recovery at the needling table 14 by one of the conical drive rollers 20. Thus, any possible slack of this unwound tape is eliminated and the rate of needling can then be precisely controlled.

Les figures 6A et 6B illustrent un second mode de réalisation des ensembles séparés d'entraînement 70, 72 dans lequel, pour mieux épouser la forme du twist 64, la courroie d'entraînement 82, 84 est montée sur une pluralité de galets inclinés 92a, 92b, 92c, 92d, 92e, 92f. Deux galets droits d'extrémité 94, 96 et une même pluralité de galets horizontaux 98a, 98b, 98c, 98d, 98e, 98f permettent le retour de la courroie, l'un de ces deux galets droits étant relié au groupe moto-réducteur 78, 80 au moyen de la liaison à cardan 86, 88. On notera que l'ensemble des galets peut être articulé pour permettre leur déplacement par rapport à l'axe médian du twist afin d'assurer un éventuel recentrage de la nappe textile.The Figures 6A and 6B illustrate a second embodiment of the separate drive assemblies 70, 72 in which, to better conform to the shape of the twist 64, the drive belt 82, 84 is mounted on a plurality of inclined rollers 92a, 92b, 92c, 92d , 92e, 92f. Two straight end rollers 94, 96 and one and the same plurality of horizontal rollers 98a, 98b, 98c, 98d, 98e, 98f allow the return of the belt, one of these two straight rollers being connected to the geared motor unit 78 , 80 by means of the universal joint 86, 88. Note that all of the rollers can be articulated to allow their displacement relative to the central axis of the twist to ensure a possible recentering of the textile web.

Un autre exemple de réalisation de ces ensembles d'entraînement est illustré aux figures 7A et 7B. Avec ce nouvel ensemble, l'entraînement de la matière textile est effectuée par une pluralité de roues 100a, 100b, 100c, 100d articulées indépendamment sur le châssis 50 (et soumise chacune à l'action d'un élément élastique 102) et dont la rotation est commandée, au travers de renvois d'angle associés 104a, 104b, 104c, 104d, par une pluralité correspondante de galets horizontaux 106a, 106b, 106c, 106d entraînés simultanément par un courroie 108. Le retour de la courroie s'effectue par l'intermédiaire de galets horizontaux d'extrémité 110, 112 (et éventuellement d'un galet tenseur 114), l'un de ces galets d'extrémité (par exemple celui référencé 112) étant relié au groupe moto-réducteur 78, 80 au moyen d'une liaison à cardan ou autre. Comme dans le mode de réalisation précédent, l'ensemble des galets peut être articulé pour permettre leur déplacement par rapport à l'axe médian du twist.Another exemplary embodiment of these training sets is illustrated in FIGS. Figures 7A and 7B . With this new assembly, the drive of the textile material is performed by a plurality of wheels 100a, 100b, 100c, 100d articulated independently on the frame 50 (and each subjected to the action of an elastic element 102) and whose rotation is controlled, through associated angle feeders 104a, 104b, 104c, 104d, by a corresponding plurality of horizontal rollers 106a, 106b, 106c, 106d driven simultaneously by a belt 108. The belt is returned by intermediate horizontal end rollers 110, 112 (and optionally a tensioner roller 114), one of these end rollers (for example that referenced 112) being connected to the geared motor group 78, 80 to means of a cardan link or other. As in the previous embodiment, all the rollers can be articulated to allow their displacement relative to the central axis of the twist.

Claims (10)

  1. A machine for needling a textile structure (10) built up from a wound strip of material to be needled that is delivered by strip supply means(12), characterized in that said strip supply means comprise a storage drum (40) containing said wound strip of textile material, an unwinding assembly (48-62) for continuously extracting said strip from said storage drum, and a helical chute (twist 64, 66) for talking up said extracted strip unwound from said drum and for bringing it to a needling table (14) at a location where friction drive means are provided (18; 20; 22).
  2. A needling machine according to claim 1, characterized in that said storage drum and said helical chute have the same axis C as said needling table.
  3. A needling machine according to claim 1, characterized in that said helical chute for feeding said unwound strip of textile material to said needling table is secured to the frame of the machine (50) and comprises two successive portions (64, 66) separated by a gap (68) to allow cutting means (28) to pass to cut said unwound strip of textile material.
  4. A needling machine according to claim 3, characterized in that said unwound strip of textile material is kept in contact with said helical chute while it is being fed to said needling table by two separate drive assemblies (70, 72) disposed respectively upstream and downstream from said means for cutting said unwound strip of textile material.
  5. A needling machine according to claim 4, characterized in that it further includes, downstream from said downstream drive assembly, a jockey roller (90) hinged to said frame and designed to guarantee regular tension on said unwound strip of textile material after it has been cut by said cutting means and before it is taken up on said needling table by said friction drive means.
  6. A needling machine according to claim 4, characterized in that each of said drive assemblies comprises wheels placed one after another so as to fit closely to the helical shape of said feed chute for said unwound strip of textile material.
  7. A needling machine according to claim 6, characterized in that each of said drive assemblies has at least two wheels (74a, 74b, 74c; 76a, 76b, 76c) each mounted on a support secured to said frame and connected to one another by a drive belt (82, 84), at least one of said wheels (74a, 76a) in each assembly being connected to a motor and gear box unit (78, 80) by means of a universal joint (86, 88).
  8. A needling machine according to claim 1, characterized in that said assembly for unwinding said wound strip of textile material includes a plurality of conical rollers (48a-48f) rotated by friction from a ring (52) centered on wheels (54a, 54b, 54c) secured to said frame and rotated by a belt (56) driven by a motor (58), and on which said wound strip of textile material rests once said storage drum has been installed on said machine.
  9. A needling machine according to claim 8, characterized in that said assembly for unwinding said wound strip of textile material further includes a presser roller (60) held against one of said conical drive rollers by a resilient element (62) acting in traction so as to enable a free end of said unwound strip of textile material to be taken up and guided towards said helical chute.
  10. A needling machine according to claim 8, characterized in that said storage drum comprises a central hub (44) having an axis of rotation C, with a series of fins (46a-46f) being fixed to the bottom thereof (drum bottom 44a) to form a perforated reception tray for receiving said conical rollers in the openings left between the fins to drive said wound strip of textile material.
EP02727699A 2001-04-30 2002-04-26 Needling loom feeding with continuous helical strip Expired - Lifetime EP1397544B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0105796A FR2824084B1 (en) 2001-04-30 2001-04-30 NEEDLE FEEDER BY CONTINUOUS SPIRAL BAND
FR0105796 2001-04-30
PCT/FR2002/001454 WO2002088449A1 (en) 2001-04-30 2002-04-26 Needling loom feeding with continuous helical strip

Publications (2)

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EP1397544A1 EP1397544A1 (en) 2004-03-17
EP1397544B1 true EP1397544B1 (en) 2010-01-13

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EP (1) EP1397544B1 (en)
JP (1) JP4068465B2 (en)
KR (1) KR100805420B1 (en)
CN (1) CN1327065C (en)
AT (1) ATE455200T1 (en)
BR (1) BR0209323A (en)
CA (1) CA2445981C (en)
DE (1) DE60235082D1 (en)
FR (1) FR2824084B1 (en)
HU (1) HU227929B1 (en)
IL (2) IL158391A0 (en)
MX (1) MXPA03009814A (en)
RU (1) RU2280722C2 (en)
UA (1) UA75131C2 (en)
WO (1) WO2002088449A1 (en)

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FR3072675B1 (en) 2017-10-19 2019-11-01 Safran Ceramics METHOD FOR MANUFACTURING A FRICTION PIECE OF COMPOSITE MATERIAL
FR3072693B1 (en) * 2017-10-20 2020-11-06 Safran Landing Systems FEED REGULATION PROCESS AND MACHINE FOR CIRCULAR NEEDLETING OF A TEXTILE STRUCTURE FORMED FROM A HELICOIDAL FIBROUS TABLECLOTH
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IL158391A0 (en) 2004-05-12
RU2003131881A (en) 2005-02-27
BR0209323A (en) 2004-07-20
HUP0400074A3 (en) 2008-08-28
KR100805420B1 (en) 2008-02-20
EP1397544A1 (en) 2004-03-17
HU227929B1 (en) 2012-06-28
CA2445981A1 (en) 2002-11-07
JP2004533547A (en) 2004-11-04
FR2824084A1 (en) 2002-10-31
FR2824084B1 (en) 2003-08-01
JP4068465B2 (en) 2008-03-26
ATE455200T1 (en) 2010-01-15
US6363593B1 (en) 2002-04-02
CN1327065C (en) 2007-07-18
RU2280722C2 (en) 2006-07-27
WO2002088449A1 (en) 2002-11-07
CN1505712A (en) 2004-06-16
IL158391A (en) 2010-02-17
KR20040025673A (en) 2004-03-24
DE60235082D1 (en) 2010-03-04
HUP0400074A2 (en) 2004-04-28
UA75131C2 (en) 2006-03-15
MXPA03009814A (en) 2004-01-29
CA2445981C (en) 2008-09-02

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