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EP1397544A1 - Needling loom feeding with continuous helical strip - Google Patents

Needling loom feeding with continuous helical strip

Info

Publication number
EP1397544A1
EP1397544A1 EP02727699A EP02727699A EP1397544A1 EP 1397544 A1 EP1397544 A1 EP 1397544A1 EP 02727699 A EP02727699 A EP 02727699A EP 02727699 A EP02727699 A EP 02727699A EP 1397544 A1 EP1397544 A1 EP 1397544A1
Authority
EP
European Patent Office
Prior art keywords
strip
needling
textile material
rollers
machine according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02727699A
Other languages
German (de)
French (fr)
Other versions
EP1397544B1 (en
Inventor
Renaud Duval
Thierry Marjollet
Robert Jean
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Landing Systems SAS
Original Assignee
Messier Bugatti SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Messier Bugatti SA filed Critical Messier Bugatti SA
Publication of EP1397544A1 publication Critical patent/EP1397544A1/en
Application granted granted Critical
Publication of EP1397544B1 publication Critical patent/EP1397544B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H18/00—Needling machines
    • D04H18/02—Needling machines with needles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H18/00—Needling machines

Definitions

  • the present invention relates to the field of needled textile structures and it relates more particularly to a device for the automatic feeding of the textile strip to a needling machine of circular type.
  • the annular preform to be needled is placed on a needling table and driven in rotation by drive means, usually friction, with which it is in continuous contact.
  • the feeding of this type of machine is made flat at the level of the needling table from a strip of material to be needled delivered from an unwinding device external to the needling machine.
  • this flat feeding poses a particular difficulty, in particular when it is a question of ensuring the production of preforms automatically without manual intervention.
  • 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 produce such a device without significantly modifying the overall dimensions of a needling machine of the circular type.
  • a machine for needling a textile structure formed from a wound band of needling material supplied by means of tape supply characterized in that said tape supply means comprise a basket of storage containing said wound web of textile material, an unwinding assembly for continuously extracting said strip from said storage basket, and a helical chute (twist) for taking up said extracted strip unwound from said basket and bringing it to a needling table at the level of friction drive means.
  • the storage basket and said helical chute have the same axis C as said needling table.
  • the helical chute for supplying said unwound strip of textile material to said needling table is integral with the chassis of the machine and formed in two successive parts separated by a space for the passage of means for cutting said strip.
  • the unwound strip of textile material is kept in contact with said helical chute during its supply to said needling table by two separate drive assemblies disposed respectively upstream and downstream of said means for cutting said strip.
  • the machine may further comprise, downstream of said downstream drive assembly, a dancer roller articulated on said chassis 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.
  • Each drive assembly comprises a plurality of rollers arranged one behind the other so as to best match the helical shape of said feed chute of said unwound strip of textile material.
  • each drive assembly comprises at least two rollers each mounted on a support integral with said chassis and connected to each other by a drive belt, at least one of said rollers of each assembly being connected to a geared motor group. by means of a universal joint.
  • the device for unwinding said rolled up strip of textile material comprises a plurality of conical rollers driven in rotation by friction from a crown centered on rollers integral with said chassis and rotated by a driven belt. by a motor, and on which rests said wrapped strip of textile material once said storage basket installed on said machine.
  • the storage basket comprises a central barrel rotating on an axis of rotation at the bottom of which (backplane) is fixed a receiving plate provided with openings for receiving said conical rollers for driving said strip wound with textile material.
  • FIG. 1 is a general elevation view of a needling machine incorporating an automatic feeding device according to the invention
  • FIG. 1A is a detail view of FIG. 1 at the level of an unwinding assembly for the textile material
  • FIG. 2 is a top view of the needling machine of FIG. 1 showing the unwinding assembly
  • FIG. 2A illustrates a basket for storing the textile material
  • FIG. 3 is a view along plane III of FIG. 2,
  • FIG. 4 shows rollers for taking up the textile material at the outlet of the unwinding assembly
  • - Figure 5 shows in perspective the drive of the textile material through a first drive module according to the invention
  • FIGS. 6A and 6B illustrate another embodiment of the textile material drive module
  • FIG. 7A and 7B illustrate yet another embodiment of the textile material drive module.
  • FIG. 1 schematically illustrates a circular type needling machine intended for needling a textile structure, or annular preform, produced from a wound strip, of fabric or nonwoven, of a textile material to be needled and provided with an automatic feeding device according to the invention.
  • This machine intended for needling textile structures 10 formed from a strip of a textile material to needling delivered continuously by supply means 12 conventionally comprises a needling table 14, forming a winding plate, on which goes come to rest this strip of textile material and which is movable vertically under the action of movement transmission means 16 as the strip unfolds.
  • Drive means 18 advantageously consisting 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 drive the rotation of this strip of textile material on the needling table.
  • the needling of the strip is carried out by a needling head
  • this needling head is driven in a vertical reciprocating movement by conventional displacement means 26.
  • Cutting means 28 (see FIG. 5) arranged upstream of the needling zone are also provided for cutting the strip once the final predetermined thickness for the textile structure has been obtained (sensors not shown make it possible to precisely control this thickness as and when the different layers are superimposed) .
  • 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 means of reciprocating movement 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.
  • evacuation means 32 allow this structure to be pushed out of the needling table, for example towards a conveyor belt (not shown) with a view to its transfer to another station of the production line as a processing station thermal such as that illustrated by international patent application WO96 / 33295 and relating to densification in annular stacks.
  • the means 12 for supplying the material to be needled comprise a storage basket 40 containing a rolled up strip of textile material 42 and formed from a central barrel 44 with an axis of rotation C at the lower part of which (also called backplane 44a) is fixed a series of fins 46a-46f forming perforated receiving plate and intended, in particular during its transport, to support the strip wound around the central drum.
  • 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 tray are intended to be traversed by the conical rollers 48a-48f of an unwinding assembly advantageously driven by a belt and carrying out the extraction of the strip at the backplane (see figure 2).
  • the conical rollers for driving the unwinding assembly partially pass through the perforated receiving plate forming the bottom of this basket so that these rollers come into direct contact with the material. textile to unroll.
  • the unwinding of the strip results from the rotation on themselves of the conical rollers for driving the unwinding assembly, this rotation being obtained by friction from a crown 52 centered on rollers 54a, 54b, 54c integral with the chassis of the machine 50 and set in rotation about the axis C by a belt 56 driven by a motor 58 (see FIG. 1A) whose speed is advantageously regulated from the central control means 30, for example as a function of the average rotational speed of the preform.
  • the drive means of the rollers 48 cannot be limited to the aforementioned friction system alone, and individual drive of each roller by a motor-reduction unit controlled from the central control means 30, like that 22 used for the tapered rollers 20, is for example also possible.
  • the free end of the unrolled strip 42 is taken between one of the drive rollers 48b and a pressure roller 60, held against this drive roller by means of an elastic element acting in traction 62 (see FIG. 4), and it is guided (swallowed) between the fins 46b-46c under the receiving plate towards a helical chute 64, 66 (twist) bringing the textile material onto the needling table 14 at the level of a conical drive roller 20.
  • the initial setting of the end between the drive roller and the pressure roller is generally carried out manually when setting in place of the basket, the rest of the process then taking place automatically.
  • the helical chute integral with the chassis 50 of the machine is formed in two successive parts 64, 66 separated only by a space 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 joined in two separate assemblies 70, 72 respectively disposed one 70 upstream the other 72 downstream of these cutting means 28.
  • Each drive assembly is preferably powered by an individual geared motor group 78, 80 controlled from the central control means 30. However, a common motorization is equally possible.
  • Each drive assembly 70, 72 comprises at least two, preferably three, rollers 74a, 74b, 74c; 76a, 76b, 76c each mounted on a support integral with the chassis 50 and connected together by a drive belt 82, 84 which drives the textile sheet along the twist.
  • the choice of the number of rollers to be used 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 best match the helical shape of the chute.
  • Each geared motor group 78, 80 is connected to one 74a, 76a of the rollers of each drive assembly by means of a cardan link 86, 88.
  • a dancer roller 90 articulated on the frame 50 and intended to guarantee a regular tension on the unwound strip of textile material 42 after it has been cut by the cutting means and before it is taken up again at the needling table 14 by one of the conical drive rollers 20.
  • any slack in this unwound strip is eliminated and the needling rate can then be precisely controlled.
  • FIGS. 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 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 gear motor group 78 , 80 by means of the universal joint 86, 88. It will be noted that all of the rollers can be articulated to allow their displacement relative to the median axis of the twist in order to ensure a possible recentering of the textile web.
  • FIGS. 7A and 7B Another embodiment of these drive assemblies is illustrated in FIGS. 7A and 7B.
  • the textile material is driven by a plurality of wheels 100a, 100b, 100c, 100d articulated independently on the chassis 50 (and each subjected to the action of an elastic element 102) and the rotation is controlled, through associated bevel gears 104a, 104b, 104c, 104d, by a corresponding plurality of horizontal rollers 106a, 106b, 106c, 106d driven simultaneously by a belt 108.
  • the return of the belt is effected by by means of horizontal end rollers 110, 112 (and possibly of a tensioning roller 114), one of these end rollers (for example that referenced 112) being connected to the geared motor group 78, 80 at by means of a universal joint or other.
  • all of the rollers can be articulated to allow their displacement relative to the median axis of the twist.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Screw Conveyors (AREA)
  • Finger-Pressure Massage (AREA)
  • Preliminary Treatment Of Fibers (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)

Abstract

The invention concerns a loom for needling a textile structure (10) formed from a strip of material to be needle-punched supplied by strip feeding means (12) comprising a storage basket containing the wound strip, an unwinding assembly (48-62) for continuously extracting said strip from the storage basket, and a twist for taking up the unwound extracted strip from the basket and bringing it to the needling table at the frictional driving means. The storage basket and the twist have a common axis C with the needling table.

Description

Titre de l'inventionTitle of invention
Alimentation aiguilleteuse par bande spirale continue.Needle feed by continuous spiral band.
Domaine de l'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.Field of the Invention The present invention relates to the field of needled textile structures and it relates more particularly to a device for the automatic feeding of the textile strip to a needling machine of circular type.
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 be needled is placed on a needling table and driven in rotation by drive means, usually friction, with which it is in continuous contact. The feeding of this type of machine is made flat at the level of the needling table from a strip of material to be needled delivered from an unwinding device external to the needling machine. However, this flat feeding poses a particular difficulty, in particular when it is a question of ensuring the 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 produce such a device without significantly modifying the overall dimensions of a needling machine of the circular type.
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. 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.These aims are achieved by a machine for needling a textile structure formed from a wound band of needling material supplied by means of tape supply, characterized in that said tape supply means comprise a basket of storage containing said wound web of textile material, an unwinding assembly for continuously extracting said strip from said storage basket, and a helical chute (twist) for taking up said extracted strip unwound from said basket and bringing it to a needling table at the level of friction drive means. The storage basket and said helical chute have the same axis C as said needling table. Thus, with this particular structure, it is possible to ensure an easy and automatic supply of textile material while retaining the same size on the ground of the needling machine.
En outre, on assure un parfait guidage de la bande jusqu'à la table d'aiguilletage.In addition, a perfect guiding of the strip is provided 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. 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. 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'aiguilletage par lesdits moyens d'entraînement à friction.The helical chute for supplying said unwound strip of textile material to said needling table is integral with the chassis of the machine and formed in two successive parts separated by a space for the passage of means for cutting said strip. The unwound strip of textile material is kept in contact with said helical chute during its supply to said needling table by two separate drive assemblies disposed respectively upstream and downstream of said means for cutting said strip. Preferably, the machine may further comprise, downstream of said downstream drive assembly, a dancer roller articulated on said chassis 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. 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. 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. 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.Each drive assembly comprises a plurality of rollers arranged one behind the other so as to best match the helical shape of said feed chute of said unwound strip of textile material. Advantageously, each drive assembly comprises at least two rollers each mounted on a support integral with said chassis and connected to each other by a drive belt, at least one of said rollers of each assembly being connected to a geared motor group. by means of a universal joint. According to a preferred embodiment, the device for unwinding said rolled up strip of textile material comprises a plurality of conical rollers driven in rotation by friction from a crown centered on rollers integral with said chassis and rotated by a driven belt. by a motor, and on which rests said wrapped strip of textile material once said storage basket installed on said machine. It can also include a roller presser held against one of said conical drive rollers by an elastic element acting in traction so as to allow the recovery of a free end of said unwound strip of textile material and its guidance towards said helical chute. The storage basket comprises a central barrel rotating on an axis of rotation at the bottom of which (backplane) is fixed a receiving plate provided with openings for receiving said conical rollers for driving said strip wound with textile material.
Brève description des dessinsBrief description of the drawings
Les caractéristiques et avantages de la présente invention ressortiront mieux de la description suivante, faite à titre indicatif et non limitatif, en regard des dessins annexés sur lesquels :The characteristics and advantages of the present invention will emerge more clearly from the following description, given by way of non-limiting illustration, with reference to the appended drawings in which:
- la figure 1 est une vue générale en élévation d'une machine d'aiguilletage intégrant un dispositif d'alimentation automatique selon l'invention,FIG. 1 is a general elevation view of a needling machine incorporating an automatic feeding device according to the invention,
- la figure 1A est une vue de détail de la figure 1 au niveau d'un ensemble de déroulement de la matière textile,FIG. 1A is a detail view of FIG. 1 at the level of an unwinding assembly for the textile material,
- la figure 2 est une vue de dessus de la machine d'aiguilletage de la figure 1 montrant l'ensemble de déroulement,FIG. 2 is a top view of the needling machine of FIG. 1 showing the unwinding assembly,
- la figure 2A illustre un panier de stockage de la matière textile,FIG. 2A illustrates a basket for storing the textile material,
- la figure 3 est une vue selon le plan III de la figure 2,FIG. 3 is a view along plane III of FIG. 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,- Figure 4 shows rollers for taking up the textile material at the outlet of the unwinding assembly, - Figure 5 shows in perspective the drive of the textile material through a first drive module according to the invention ,
- les figures 6A et 6B illustrent un autre mode de réalisation du module d'entraînement de la matière textile, etFIGS. 6A and 6B illustrate another embodiment of the textile material drive module, and
- les figures 7A et 7B illustrent encore un autre mode de réalisation du module d'entraînement de la matière textile.- Figures 7A and 7B illustrate yet another embodiment of the textile material drive module.
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.FIG. 1 schematically illustrates a circular type needling machine intended for needling a textile structure, or annular preform, produced from a wound strip, of fabric or nonwoven, of a textile material to be needled 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. L'aiguilletage de la bande est réalisé par une tête d'aiguilletageThis machine intended for needling textile structures 10 formed from a strip of a textile material to needling delivered continuously by supply means 12 conventionally comprises a needling table 14, forming a winding plate, on which goes come to rest this strip of textile material and which is movable vertically under the action of movement transmission means 16 as the strip unfolds. Drive means 18 advantageously consisting 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 drive the rotation of this strip of textile material on the needling table. The needling of the strip is carried out by a needling head
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 W096/33295 et relatif à une densification en piles annulaires.24 comprising a determined number of barbed needles and disposed directly above the needling table between two of the three conical drive rollers. To allow the needling of the different superposed layers of textile material to each other, this needling head is driven in a vertical reciprocating movement by conventional displacement means 26. Cutting means 28 (see FIG. 5) arranged upstream of the needling zone are also provided for cutting the strip once the final predetermined thickness for the textile structure has been obtained (sensors not shown make it possible to precisely control this thickness as and when the different layers are superimposed) . 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 means of reciprocating movement 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 strip has been cut and the needled structure, evacuation means 32 allow this structure to be pushed out of the needling table, for example towards a conveyor belt (not shown) with a view to its transfer to another station of the production line as a processing station thermal such as that illustrated by international patent application WO96 / 33295 and relating to densification in annular stacks.
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. 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 (entre 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.According to the invention and as illustrated in FIGS. 1A and 2A, the means 12 for supplying the material to be needled comprise a storage basket 40 containing a rolled up strip of textile material 42 and formed from a central barrel 44 with an axis of rotation C at the lower part of which (also called backplane 44a) is fixed a series of fins 46a-46f forming perforated receiving plate and intended, in particular during its transport, to support the strip wound around the central drum. 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 tray (between the fins 46a-46f) are intended to be traversed by the conical rollers 48a-48f of an unwinding assembly advantageously driven by a belt and carrying out the extraction of the strip at the backplane (see figure 2). In fact, when the basket is placed on the chassis, the conical rollers for driving the unwinding assembly partially pass through the perforated receiving plate forming the bottom of this basket so that these rollers come into direct 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 for driving the unwinding assembly, this rotation being obtained by friction from a crown 52 centered on rollers 54a, 54b, 54c integral with the chassis of the machine 50 and set in rotation about the axis C by a belt 56 driven by a motor 58 (see FIG. 1A) whose speed is advantageously regulated from the central control means 30, for example as a function of the average rotational speed of the preform. Of course, the drive means of the rollers 48 cannot be limited to the aforementioned friction system alone, and individual drive of each roller by a motor-reduction unit controlled from the central control means 30, like 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 FIG. 3, the free end of the unrolled strip 42 is taken between one of the drive rollers 48b and a pressure roller 60, held against this drive roller by means of an elastic element acting in traction 62 (see FIG. 4), and it is guided (swallowed) between the fins 46b-46c under the receiving plate towards a helical chute 64, 66 (twist) bringing the textile material onto the needling table 14 at the level of a conical drive roller 20. It will be noted that the initial setting of the end between the drive roller and the pressure roller is generally carried out manually when setting in place of the basket, the rest of the process 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 to its deposition on the needling table is illustrated in Figure 5 which shows its 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 space 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 joined in two separate assemblies 70, 72 respectively disposed one 70 upstream the other 72 downstream of these cutting means 28. Each drive assembly is preferably powered by an individual geared motor group 78, 80 controlled from the central control means 30. However, a common motorization is equally possible.
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. 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.Each drive assembly 70, 72 comprises at least two, preferably three, rollers 74a, 74b, 74c; 76a, 76b, 76c each mounted on a support integral with the chassis 50 and connected together by a drive belt 82, 84 which drives the textile sheet along the twist. The choice of the number of rollers to be used 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 best match the helical shape of the chute. Each geared motor group 78, 80 is connected to one 74a, 76a of the rollers of each drive assembly by means of a cardan link 86, 88. Downstream of the downstream drive assembly 72 is disposed a dancer roller 90 articulated on the frame 50 and intended to guarantee a regular tension on the unwound strip of textile material 42 after it has been cut by the cutting means and before it is taken up again at the needling table 14 by one of the conical drive rollers 20. Thus, any slack in this unwound strip is eliminated and the needling rate 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.FIGS. 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 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 gear motor group 78 , 80 by means of the universal joint 86, 88. It will be noted that all of the rollers can be articulated to allow their displacement relative to the median axis of the twist in order 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 embodiment of these drive assemblies is illustrated in FIGS. 7A and 7B. With this new assembly, the textile material is driven by a plurality of wheels 100a, 100b, 100c, 100d articulated independently on the chassis 50 (and each subjected to the action of an elastic element 102) and the rotation is controlled, through associated bevel gears 104a, 104b, 104c, 104d, by a corresponding plurality of horizontal rollers 106a, 106b, 106c, 106d driven simultaneously by a belt 108. The return of the belt is effected by by means of horizontal end rollers 110, 112 (and possibly of a tensioning roller 114), one of these end rollers (for example that referenced 112) being connected to the geared motor group 78, 80 at by means of a universal joint or other. As in the previous embodiment, all of the rollers can be articulated to allow their displacement relative to the median axis of the twist.

Claims

REVENDICATIONS
1. Machine d'aiguilletage d'une structure textile (10) formée à partir d'une bande enroulée de matière à aiguilleter débitée par des moyens de fourniture de bande (12), caractérisée en ce que lesdits moyens de fourniture de bande comportent un panier de stockage (40) contenant ladite bande enroulée de matière textile, un ensemble de déroulement (48-62) pour extraire en continu ladite bande dudit panier de stockage, et une goulotte hélicoïdale (twist 64, 66) pour reprendre ladite bande extraite déroulée dudit panier et l'amener vers une table d'aiguilletage (14) au niveau de moyens d'entraînement à friction (18 ;20, 22).1. A needling machine for a textile structure (10) formed from a wound band of needling material supplied by means of tape supply (12), characterized in that said tape supply means comprise a storage basket (40) containing said wound web of textile material, an unwinding assembly (48-62) for continuously extracting said strip from said storage basket, and a helical chute (twist 64, 66) for taking up said unwound extracted strip said basket and bring it towards a needling table (14) at the level of friction drive means (18; 20, 22).
2. Machine d'aiguilletage selon la revendication 1 , caractérisé en ce que ledit panier de stockage et ladite goulotte hélicoïdale ont même axe C que ladite table d'aiguilletage.2. Needling machine according to claim 1, characterized in that said storage basket and said helical chute have the same axis C as said needling table.
3. Machine d'aiguilletage selon la revendication 1 , caractérisé en ce que ladite goulotte hélicoïdale d'amenée de ladite bande déroulée de matière textile vers ladite table d'aiguilletage est solidaire du châssis de la machine (50) et formée en deux parties successives (64, 66) séparées par un espace (68) pour le passage de moyens de découpe (28) de ladite bande déroulée de matière textile.3. 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 integral with the chassis of the machine (50) and formed in two successive parts (64, 66) separated by a space (68) for the passage of cutting means (28) of said unwound strip of textile material.
4. Machine d'aiguilletage selon la revendication 3, caractérisé en ce que ladite 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 (70, 72) disposés respectivement en amont et en aval desdits moyens de découpe de ladite bande déroulée de matière textile.4. Needling machine according to claim 3, characterized in that said unwound strip of textile material is kept in contact with said helical chute during its supply to said needling table by two separate drive assemblies (70, 72) disposed respectively upstream and downstream of said means for cutting said unwound strip of textile material.
5. Machine d'aiguilletage selon la revendication 4, caractérisé en ce qu'elle comporte en outre, en aval dudit ensemble d'entraînement aval, un rouleau danseur (90) 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'aiguilletage par lesdits moyens d'entraînement à friction. 5. Needling machine according to claim 4, characterized in that it further comprises, downstream of said downstream drive assembly, a dancer roller (90) articulated on said chassis and intended to guarantee a regular tension on said strip unwinding of textile material after being cut by said cutting means and before being taken up again at said needling table by said friction drive means.
6. Machine d'aiguilletage selon la revendication 4, caractérisé en ce que chacun desdits ensembles d'entraînement comporte des 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.6. Needling machine according to claim 4, characterized in that each of said drive assemblies comprises rollers arranged one behind the other so as to best match the helical shape of said feed chute of said unwound strip of textile material.
7. Machine d'aiguilletage selon la revendication 6, caractérisé en ce que chacun desdits ensembles d'entraînement comporte au moins deux galets (74a, 74b, 74c ;76a, 76b, 76c) montés chacun sur un support solidaire dudit châssis et reliés entre eux par une courroie d'entraînement (82, 84), l'un au moins (74a, 76a) desdits galets de chaque ensemble étant relié à un groupe moto-réducteur (78, 80) au moyen d'une liaison à cardan (86, 88).7. Needling machine according to claim 6, characterized in that each of said drive assemblies comprises at least two rollers (74a, 74b, 74c; 76a, 76b, 76c) each mounted on a support integral with said chassis and connected between them by a drive belt (82, 84), at least one (74a, 76a) of said rollers of each assembly being connected to a geared motor group (78, 80) by means of a cardan link ( 86, 88).
8. Machine d'aiguilletage selon la revendication 1 , caractérisé en ce que ledit ensemble de déroulement de ladite bande enroulée de matière textile comporte une pluralité de rouleaux coniques (48a-48f) entraînés en rotation par friction à partir d'une couronne (52) centrée sur des galets (54a, 54b, 54c) solidaires dudit châssis et mise en rotation par une courroie (56) entraînée par un moteur (58), et sur lesquels vient reposer ladite bande enroulée de matière textile une fois ledit panier de stockage installé sur ladite machine.8. Needling machine according to claim 1, characterized in that said unwinding assembly of said rolled up strip of textile material comprises a plurality of conical rollers (48a-48f) rotated by friction from a crown (52 ) centered on rollers (54a, 54b, 54c) integral with said chassis and rotated by a belt (56) driven by a motor (58), and on which rests said strip wound with textile material once said storage basket installed on said machine.
9. Machine d'aiguilletage selon la revendication 8, caractérisé en ce que ledit ensemble de déroulement de ladite bande enroulée de matière textile comporte en outre un rouleau presseur (60) maintenu contre l'un desdits rouleaux coniques d'entraînement par un élément élastique agissant en traction (62) de façon à permettre la reprise d'une extrémité libre de ladite bande déroulée de matière textile et son guidage vers ladite goulotte hélicoïdale.9. Needling machine according to claim 8, characterized in that said unwinding assembly of said wound web of textile material further comprises a pressure roller (60) held against one of said conical drive rollers by an elastic element acting in traction (62) so as to allow the recovery of a free end of said unwound strip of textile material and its guidance towards said helical chute.
10. Machine d'aiguilletage selon la revendication 8, caractérisé en ce que ledit panier de stockage comporte un fût central (44) d'axe de rotation C à la partie inférieure duquel (fond de panier 44b) est fixé une série d'ailettes (46a, 46f) formant plateau de réception ajouré pour recevoir dans les ouvertures laissées entre ailettes lesdits rouleaux coniques d'entraînement de ladite bande enroulée de matière textile. 10. Needling machine according to claim 8, characterized in that said storage basket comprises a central barrel (44) of axis of rotation C at the bottom of which (backplane 44b) is fixed a series of fins (46a, 46f) forming a perforated receiving plate for receiving in the openings left between fins said conical rollers for driving said rolled up 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)

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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

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AT (1) ATE455200T1 (en)
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CN1327065C (en) 2007-07-18
HUP0400074A2 (en) 2004-04-28
JP2004533547A (en) 2004-11-04
JP4068465B2 (en) 2008-03-26
DE60235082D1 (en) 2010-03-04
CA2445981C (en) 2008-09-02
IL158391A (en) 2010-02-17
WO2002088449A1 (en) 2002-11-07
CA2445981A1 (en) 2002-11-07
RU2280722C2 (en) 2006-07-27
IL158391A0 (en) 2004-05-12
RU2003131881A (en) 2005-02-27
UA75131C2 (en) 2006-03-15
FR2824084A1 (en) 2002-10-31
BR0209323A (en) 2004-07-20
US6363593B1 (en) 2002-04-02
FR2824084B1 (en) 2003-08-01
HU227929B1 (en) 2012-06-28
KR100805420B1 (en) 2008-02-20
ATE455200T1 (en) 2010-01-15
MXPA03009814A (en) 2004-01-29
EP1397544B1 (en) 2010-01-13
HUP0400074A3 (en) 2008-08-28
CN1505712A (en) 2004-06-16

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