EP1373613B1 - System for automated management for spreading a textile cable web - Google Patents

System for automated management for spreading a textile cable web Download PDF

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Publication number
EP1373613B1
EP1373613B1 EP20020706912 EP02706912A EP1373613B1 EP 1373613 B1 EP1373613 B1 EP 1373613B1 EP 20020706912 EP20020706912 EP 20020706912 EP 02706912 A EP02706912 A EP 02706912A EP 1373613 B1 EP1373613 B1 EP 1373613B1
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EP
European Patent Office
Prior art keywords
tow
width
tows
textile sheet
positions
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.)
Expired - Lifetime
Application number
EP20020706912
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German (de)
French (fr)
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EP1373613A1 (en
Inventor
Yvan Baudry
Robert Jean
Jean-Pascal Pirodon
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
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Publication date
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Publication of EP1373613A1 publication Critical patent/EP1373613A1/en
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Publication of EP1373613B1 publication Critical patent/EP1373613B1/en
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/0204—Sensing transverse register of web
    • B65H23/0216—Sensing transverse register of web with an element utilising photoelectric effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B65H23/035—Controlling transverse register of web by guide bars
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/18—Separating or spreading
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/412—Photoelectric detectors in barrier arrangements, i.e. emitter facing a receptor element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/42—Cameras

Definitions

  • each swing which ensures an individual adjustment of the position of each cable is illustrated on the figures 3 and 4 which show four second cylinders 118a, 118b, 118c, 118d, preferably electrically operated, acting on an axis 120a, 120b, 120c, 120d of connection with a lower part of the swing by means of a control arm 122a , 122b, 122c, 122d.
  • These second jacks are advantageously mounted in a 102 of the lateral uprights of the frame.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Sewing Machines And Sewing (AREA)
  • Looms (AREA)
  • Nonwoven Fabrics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)

Abstract

Apparatus for automatically controlling the spreading of a textile sheet made up of a plurality of tows coming from a tow feed module and serving to feed a drive module, the apparatus comprises means for measuring the positions of the longitudinal edges of each tow, means for individually adjusting the width of each tow, means for individually adjusting the position of each tow in a direction perpendicular to a tow advance direction, and digital processor means responsive to said position measuring means to control the adjustment means in such a manner that the textile sheet presents determined width and position.

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 système de gestion automatisée pour l'étalement de câbles destinés à former ces structures textiles.The present invention relates to the field of needled textile structures and more particularly relates to an automated management system for spreading cables intended to form these textile structures.

Art antérieurPrior art

Dans les processus industriels d'aiguilletage traditionnel, la nappe textile qui sera aiguilletée et servira par exemple à l'élaboration de pièces de protection utilisées aux températures élevées, est formée à partir de plusieurs câbles disposés cote à cote et composés chacun d'une multitude de fils textiles avantageusement de type monofilaments. Chaque câble est issu d'un appareil appelé râtelier et sort sur une largeur et à une position devant a priori permettre une répartition la plus uniforme possible dans la nappe (appelée aussi voile de câble).In industrial processes of traditional needling, the textile web which will be needled and used for example in the development of protective parts used at high temperatures, is formed from several cables arranged side by side and each composed of a multitude textile threads advantageously of the monofilament type. Each cable is derived from a device called rack and out on a width and a position before a priori allow a distribution as uniform as possible in the sheet (also called cable sail).

Actuellement, cette répartition est assurée uniquement de façon manuelle par un opérateur placé en sortie du râtelier, qui scrute constamment la nappe, notamment au niveau des recouvrements entre câbles, et si c'est possible en modifie manuellement son étalement pour en limiter les imperfections. Malheureusement, lorsque ces imperfections apparaissent trop importantes, le processus doit être interrompu avec les conséquences graves qui en découlent. Outre que cette méthode est particulièrement coûteuse en personnel (notamment lorsqu'il s'agit d'assurer un processus continu 24 heures sur 24), elle n'est pas exempte de défauts de part la présence du facteur humain.Currently, this distribution is provided only manually by an operator placed at the output of the rack, which constantly scans the sheet, especially at the overlap between cables, and if possible by manually changing its spreading to limit imperfections. Unfortunately, when these imperfections appear too important, the process must be interrupted with the serious consequences that result. Apart from the fact that this method is particularly costly in terms of personnel (especially when it comes to ensuring a continuous process 24 hours a day), it is not free from defects due to the presence of the human factor.

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

La présente invention pallie ces inconvénients en proposant un dispositif de gestion automatisée de l'étalement d'une nappe textile formée à partir d'une pluralité de câbles issus d'un module d'alimentation de câbles et destinée à alimenter un module d'entraînement, caractérisé en ce qu'il comporte des moyens pour mesurer la position des bords longitudinaux de chaque câble, des moyens pour régler individuellement la largeur de chaque câble, des moyens pour régler individuellement la position de chaque câble dans une direction perpendiculaire à une direction d'avancée des câbles, et des moyens de traitement numérique pour, à partir desdits moyens de mesure de position, commander lesdits moyens de réglage, de telle sorte que ladite nappe textile présente une largeur et une position déterminées.The present invention overcomes these disadvantages by proposing an automated management device for spreading a textile web formed from a plurality of cables from a cable supply module and intended to feed a drive module. , characterized in that it comprises means for measuring the position of the longitudinal edges of each cable, means for adjusting individually the width of each cable, means for individually adjusting the position of each cable in a direction perpendicular to a direction of advance of the cables, and digital processing means for, from said position measuring means, controlling said means of adjustment, such that said textile web has a specific width and position.

Avec cette configuration particulière, il est possible d'obtenir automatiquement une répartition uniforme de la nappe textile dont la largeur et la position sont ainsi parfaitement garanties et contrôlées en temps réel pour permettre son introduction dans un module de préaiguilletage ou directement dans un étaleur/nappeur.With this particular configuration, it is possible to automatically obtain a uniform distribution of the textile web whose width and position are thus perfectly guaranteed and controlled in real time to allow its introduction into a pre-needling module or directly into a spreader / lapper .

Avantageusement, les moyens de mesure de la position des bords longitudinaux de chaque câble comportent soit une caméra numérique disposée au dessus de la nappe textile soit un détecteur, de préférence un capteur linéaire optique formé d'une pluralité de diodes émettrices disposées en regard d'une pluralité de diodes réceptrices et entre lesquelles va passer le câble à mesurer. De même, les moyens de réglage individuel de la largeur de chaque câble comportent une barre banane de réglage dont le pivotement autour d'un axe de rotation sous l'action d'un premier vérin a pour effet, en modifiant la position de la courbure de sa partie centrale, d'agir sur la largeur du câble passant sur cette barre banane de réglage. Pareillement, les moyens de réglage individuel de la position de chaque câble dans une direction perpendiculaire à une direction d'avancée des câbles comportent un second vérin, agissant sur un axe de liaison pour déplacer, au moyen d'un bras de commande, une balancelle de support de ce câble. Les premiers et seconds vérins sont de préférence des vérins à commande électrique actionnés directement par lesdits moyens de traitement numérique.Advantageously, the means for measuring the position of the longitudinal edges of each cable comprise either a digital camera disposed above the textile web or a detector, preferably an optical linear sensor formed of a plurality of emitting diodes arranged opposite to each other. a plurality of receiving diodes and between which will pass the cable to be measured. Similarly, the individual adjustment means of the width of each cable comprise a banana adjustment bar whose pivoting about an axis of rotation under the action of a first cylinder has the effect, by changing the position of the curvature its central part, to act on the width of the cable passing on this adjustment banana bar. Similarly, the means for individually adjusting the position of each cable in a direction perpendicular to a direction of advance of the cables comprise a second jack, acting on a connecting pin to move, by means of a control arm, a swing supporting this cable. The first and second cylinders are preferably electrically actuated actuators actuated directly by said digital processing means.

Les moyens de traitement numérique comportent un microcalculateur ou un automate programmable qui, à partir desdites mesures relevées par lesdits détecteurs de position, commande lesdits premiers et seconds vérins de réglage de la largeur et de la position de chaque câble, de façon à assurer une régulation de la largeur et de la position de ladite nappe textile par rapport à des valeurs de consigne prédéterminée. Avantageusement, ces valeurs de consigne prédéterminée comportent une largeur totale de nappe Nc, un recouvrement nominal entre câbles R1 c, R2c, R3c et une largeur individuelle de câble Lc. Toutefois, seules les valeurs de consigne relatives à ladite largeur totale de nappe et lesdits recouvrements nominaux sont fournies auxdits moyens de traitement numérique par un opérateur, la valeur de consigne relative à ladite largeur individuelle de câble étant calculée automatiquement par lesdits moyens de traitement à partir desdites consignes fournies par l'opérateur.The digital processing means comprise a microcomputer or a programmable controller which, from said measurements taken by said position detectors, controls said first and second cylinders for adjusting the width and the position of each cable, so as to provide a regulation the width and position of said textile web relative to predetermined set values. Advantageously, these predetermined setpoint values comprise a total width of the sheet Nc, a nominal covering between cables R1 c, R2c, R3c and an individual cable width Lc. However, only the set values relating to said total width of the web and said nominal overlays are supplied to said digital processing means by an operator, the set value relating to said individual cable width being calculated automatically by said processing means from said instructions provided by the operator.

L'invention concerne également le procédé mis en oeuvre dans ce dispositif de gestion automatisée de l'étalement d'une nappe textile.The invention also relates to the method implemented in this automated management device for spreading a textile web.

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 :

  • la figure 1 est une vue schématique de coté d'un dispositif automatisé de gestion de l'étalement d'une nappe textile selon l'invention,
  • la figure 2 est une vue selon le plan II de la figure 1,
  • la figure 3 est une vue selon le plan III de la figure 1,
  • la figure 4 est une vue selon le plan IV de la figure 1, et
  • la figure 5 montre différents modules électroniques assurant de gestion du dispositif selon l'invention.
The features and advantages of the present invention will emerge more clearly from the following description, given by way of non-limiting indication, with reference to the appended drawings in which:
  • the figure 1 is a schematic side view of an automated device for managing the spreading of a textile web according to the invention,
  • the figure 2 is a view according to plan II of the figure 1 ,
  • the figure 3 is a view according to plan III of the figure 1 ,
  • the figure 4 is a view according to plane IV of the figure 1 , and
  • the figure 5 shows various electronic modules providing management of the device according to the invention.

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

Un dispositif de gestion automatisée de l'étalement d'une nappe textile est illustré de façon schématique sur la figure 1.An automated management device for the spreading of a textile web is schematically illustrated on the figure 1 .

Ce dispositif 10 prend place dans un râtelier traditionnel entre un module d'alimentation des câbles 12 et un module d'entraînement de ces câbles 14. Ce module d'entraînement peut également être intégré à un module de préaiguilletage ou à un étaleur/nappeur. Dans l'exemple illustré, le module d'alimentation 12 qui est disposé dans un plan supérieur par rapport au module d'entraînement, délivre quatre câbles 16a, 16b, 16c, 16d qui sortent selon une direction d'avancée entre des barres de détour respectives 120a, 120b, 120c, 120d disposées sur quatre niveaux différents. Bien entendu, ce nombre de câbles n'est en aucune façon limitatif et le recours à un nombre inférieur (au moins deux) ou supérieur, sans autre limitation que l'espace disponible pour l'installation du dispositif, est tout à fait possible. Le module d'entraînement 14 comporte quant à lui une série de rouleaux de prise 140 (appelé aussi presse d'entraînement) qui reprennent et entraînent la nappe formée des quatre câbles précédents et uniformément répartie par le dispositif de gestion de l'étalement 10 selon l'invention.This device 10 takes place in a traditional rack between a cable supply module 12 and a drive module of these cables 14. This drive module can also be integrated with a pre-needling module or a spreader / lapper. In the example shown, the power supply module 12 which is arranged in a plane higher than the drive module, delivers four cables 16a, 16b, 16c, 16d which exit in a direction of advance between detour bars respective 120a, 120b, 120c, 120d disposed on four different levels. Of course, this number of cables is in no way limiting and the use of a smaller number (at least two) or greater, with no other limitation than the space available for the installation of the device, is quite possible. The drive module 14 comprises a series of take-up rollers 140 (also called drive press) which take up and drive the sheet formed by the four preceding cables and uniformly distributed by the spreading management device 10 according to the invention.

Ce dispositif automatisé comporte, montés entre de deux montants latéraux 100, 102, formant bâti quatre premières traverses support 104a, 104b, 104c, 104d, formant rail de guidage, disposés sur quatre niveaux différents légèrement décalés par rapport aux quatre niveaux des barres de détour, chaque première traverse support portant une balancelle (ou portique) 106a, 106b, 106c, 106d mobile transversalement entre ces montants, dans une direction perpendiculaire à la direction d'avancée des câbles, et destinée à supporter le câble durant sa traversée du dispositif.This automated device comprises, mounted between two lateral uprights 100, 102, forming a frame four first cross support 104a, 104b, 104c, 104d, forming a guide rail, arranged on four different levels slightly offset from the four levels of detour bars , each first support beam carrying a swing (or gantry) 106a, 106b, 106c, 106d movable transversely between these uprights, in a direction perpendicular to the direction of advance of the cables, and for supporting the cable during its passage through the device.

Sur une partie supérieure de cette balancelle (au niveau de sa traverse support), et de chaque côté de celle-ci, sont fixées, comme le montrent les figures 2 et 3, deux flasques latéraux 108a, 108b, 108c, 108d ; 108'a, 108'b, 108'c, 108'd entre lesquels sont montées décalées l'une au dessus de l'autre une première barre de centrage fixe 110a, 110b, 110c, 110d et des moyens de réglage de la largeur du câble formés par une barre de réglage 112a, 112b, 112c, 112d mobile autour d'un axe 114a, 114b, 114c, 114d dont la rotation est commandée par un premier vérin 116a, 116b, 116c, 116d, de préférence à commande électrique, monté sur la balancelle.On an upper part of this swing (at its cross support), and on each side thereof, are fixed, as shown by the figures 2 and 3 two side flanges 108a, 108b, 108c, 108d; 108'a, 108'b, 108'c, 108'd between which are mounted offset one above the other a first fixed centering bar 110a, 110b, 110c, 110d and means for adjusting the width cable formed by an adjusting bar 112a, 112b, 112c, 112d movable about an axis 114a, 114b, 114c, 114d whose rotation is controlled by a first cylinder 116a, 116b, 116c, 116d, preferably electrically controlled , mounted on the swing.

La barre de centrage fixe qui est sensiblement alignée sur les barres de détour est de préférence une barre banane, c'est à dire présentant une forme incurvée dans sa partie centrale. Toutefois, une barre de centrage droite est aussi envisageable. La barre de réglage mobile est par contre nécessairement une barre banane, son pivotement autour de son axe de rotation sous l'action du premier vérin ayant pour effet de modifier la position de la courbure de sa partie centrale qui, en passant d'une forme creuse à une forme bombée, va agir sur la largeur du câble passant sur cette barre banane. Ainsi, à une position bombée correspondra une largeur plus grande que celle correspondant à une position creuse.The fixed centering bar which is substantially aligned with the detour bars is preferably a banana bar, ie having a curved shape in its central part. However, a right centering bar is also possible. The movable adjustment bar is necessarily against a banana bar, its pivoting about its axis of rotation under the action of the first cylinder having the effect of changing the position of the curvature of its central portion which, passing from a shape hollow to a convex shape, will act on the width of the cable passing on this banana bar. Thus, at a curved position will correspond a width greater than that corresponding to a hollow position.

La commande du déplacement transversal de chaque balancelle qui assure un réglage individuel de la position de chaque câble est illustrée sur les figures 3 et 4 qui montrent quatre seconds vérins 118a, 118b, 118c, 118d, de préférence à commande électrique, agissant sur un axe 120a, 120b, 120c, 120d de liaison avec une partie inférieure de la balancelle par l'intermédiaire d'un bras de commande 122a, 122b, 122c, 122d. Ces seconds vérins sont avantageusement montés dans un 102 des montants latéraux du bâti. Sur cette partie inférieure de la balancelle est également montée, sensiblement au niveau de la presse d'entraînement 140, une seconde barre de centrage fixe 124a, 124b, 124c, 124d faisant fonction de barre de détour pour ramener le câble descendant le long de la balancelle vers l'entrée du module d'entraînement 14.The control of the transverse displacement of each swing which ensures an individual adjustment of the position of each cable is illustrated on the figures 3 and 4 which show four second cylinders 118a, 118b, 118c, 118d, preferably electrically operated, acting on an axis 120a, 120b, 120c, 120d of connection with a lower part of the swing by means of a control arm 122a , 122b, 122c, 122d. These second jacks are advantageously mounted in a 102 of the lateral uprights of the frame. On this lower part of the swing is also mounted, substantially at the level of the drive press 140, a second fixed centering bar 124a, 124b, 124c, 124d acting as a detour bar for bringing the downward cable along the swing to the input of the drive module 14.

Les mesures de la largeur et de la position de chaque câble dans la nappe desquelles sera déduite la largeur totale de la nappe sont assurées par quatre détecteurs montés chacun sur une seconde traverse support 126a, 126b, 126c, 126d, disposé également entre les montants latéraux 100, 102, sensiblement au niveau de la partie inférieure de la balancelle. Chaque détecteur 128a, 128b, 128c, 128d, avantageusement constitué par un capteur linéaire optique (de préférence une rampe de lumière infrarouge de largeur supérieure à celle d'un câble individuel) formé d'une pluralité de diodes émettrices 130a, 130b, 130c, 130d et de diodes réceptrices 132a, 132b, 132c, 132d disposées en regard et entre lesquelles va passer le câble à mesurer, est monté sur la seconde traverse support de façon à assurer une détection au moins au niveau des deux côtés longitudinaux du câble, et de préférence sur toute sa largeur. On notera que l'on peut avantageusement remplacer ces détecteurs par une unique caméra numérique placée dans une position telle, au dessus de la nappe textile, qu'elle puisse couvrir dans son champ de vision toute la largeur de cette nappe.The measurements of the width and the position of each cable in the ply from which the total width of the ply will be deduced are provided by four detectors each mounted on a second support beam 126a, 126b, 126c, 126d, also arranged between the lateral uprights. 100, 102, substantially at the bottom of the swing. Each detector 128a, 128b, 128c, 128d, advantageously constituted by an optical linear sensor (preferably an infrared light beam of width greater than that of an individual cable) formed of a plurality of emitting diodes 130a, 130b, 130c, 130d and of receiving diodes 132a, 132b, 132c, 132d disposed opposite and between which will pass the cable to be measured, is mounted on the second support beam so as to ensure detection at least at the two longitudinal sides of the cable, and preferably over its entire width. It will be noted that these detectors can advantageously be replaced by a single digital camera placed in such a position, above the textile sheet, that it can cover the whole width of this sheet in its field of vision.

Cette gestion automatisée est assurée par un moyen de traitement numérique (voir la figure 5), de préférence un microcalculateur ou un automate programmable 134, qui reçoit des informations de position des détecteurs 128a, 128b, 128c, 128d et, à partir de ces informations et de paramètres internes actionne les différents vérins à commande électrique 116a, 116b, 116c, 116d;118a, 118b, 118c, 118d assurant la commande du déplacement des barres de réglage et des balancelles. Les paramètres pris en compte sont essentiellement la vitesse d'avancée des câbles devant former la nappe textile et la distance existant entre les détecteurs et l'axe de rotation des barres de réglage. Ce calculateur réalise en fait en temps réel une régulation par rapport à trois valeurs de consigne : une largeur totale de nappe souhaitée (largeur totale de consigne Nc), un recouvrement nominal entre câble désiré (recouvrements de consigne R1 c, R2c, R3c), et une largeur individuelle de câble (largeur individuelle de consigne Lc), de façon à obtenir une répartition uniforme des fibres textiles constituant la nappe. Seules les deux premières valeurs de consignes sont fournies par l'opérateur au moyen de traitement numérique qui calcule alors automatiquement la consigne Lc. A titre d'exemple, on a pu obtenir d'excellents résultats avec les consignes suivantes :

  • Nc = 530 mm, R1c = R2c = R3c = 10 mm, Lc = 140 mm.
This automated management is provided by a digital processing means (see figure 5 ), preferably a microcomputer or a programmable controller 134, which receives position information from the detectors 128a, 128b, 128c, 128d, and from this information and internal parameters actuates the various power actuators 116a, 116b, 116c , 116d, 118a, 118b, 118c, 118d controlling the movement of adjusting bars and swings. The parameters taken into account are essentially the speed of advance of the cables to form the textile web and the distance between the detectors and the axis of rotation of the adjustment bars. This calculator realizes in fact in real time a regulation with respect to three setpoint values: a desired total width of web (total setpoint width Nc), a nominal recovery between desired cable (setpoint recoveries R1c, R2c, R3c), and an individual cable width (individual set width Lc), so as to obtain a uniform distribution of textile fibers constituting the web. Only the first two setpoint values are provided by the operator by means of digital processing which then automatically calculates the setpoint Lc. By way of example, excellent results have been obtained with the following instructions:
  • Nc = 530 mm, R1c = R2c = R3c = 10 mm, Lc = 140 mm.

Le fonctionnement du dispositif 10 peut s'analyser comme suit. Il suppose bien entendu que les câbles A, B, C et D, de répartition non uniforme et de largeur a priori non conforme (en générale plus petite) soient préalablement extraits du module 12, puis que la nappe N formée dans le dispositif soit introduite dans le module 14 qui assurera son entraînement. Ces câbles passent chacun successivement sur la première barre de centrage 110 puis sur la barre de réglage associée 112 qui, dans sa position initiale, présente une position de courbure conforme aux commandes de consigne, et enfin sur la seconde barre de centrage 124. Dans cette position initiale, donc avant un entraînement continu de la nappe, chaque détecteur dispose d'informations précises sur la position exacte du câble, par rapport à un référentiel fixe prédéterminé, dont il assure le contrôle. Ces informations sont les positions des deux bords longitudinaux du câble, desquelles est déduite la largeur individuelle du câble. L'ensemble des informations des quatre détecteurs permet de déterminer une valeur initiale N0 pour la largeur totale de la nappe, trois valeurs initiales (qui peuvent être identiques) pour les différents recouvrements, R10 pour le recouvrement entre les câbles A et B, R20 pour le recouvrement entre les câbles B et C, R30 pour le recouvrement entre les câbles C et D, et également quatre valeurs initiales LA0, LBO, LCO, LDO pour les largeurs individuelles des câbles. C'est à partir de la comparaison de ces valeurs initiales et des valeurs mesurées ultérieures Ni, Ri, Li avec les valeurs de consignes prédéterminées que sera effectuée la régulation par les moyens de traitement 134.The operation of the device 10 can be analyzed as follows. It assumes, of course, that the cables A, B, C and D, of non-uniform distribution and of a priori non-compliant width (generally smaller), are previously extracted from the module 12, then that the sheet N formed in the device is introduced. in module 14 which will ensure his training. These cables each pass successively on the first centering bar 110 then on the associated adjustment bar 112 which, in its initial position, has a curvature position in accordance with the setpoint commands, and finally on the second centering bar 124. In this initial position, so before a continuous drive of the web, each detector has accurate information on the exact position of the cable, relative to a predetermined fixed reference, which he ensures control. This information is the position of the two longitudinal edges of the cable, from which the individual cable width is deduced. The set of information of the four detectors makes it possible to determine an initial value N0 for the total width of the ply, three initial values (which may be identical) for the different overlaps, R10 for the covering between the cables A and B, R20 for the overlap between the cables B and C, R30 for the covering between the cables C and D, and also four initial values LA0, LBO, LCO, LDO for the individual widths of the cables. It's from the comparing these initial values and the subsequent measured values Ni, Ri, Li with the predetermined setpoint values that the regulation by the processing means 134 will perform.

Cette régulation en temps réel s'effectue selon trois niveaux de priorités successifs, la priorité la plus élevée étant donnée à l'obtention d'une largeur totale de nappe conforme à la largeur de consigne entrée par l'opérateur. Pour cela, il est procédé en premier lieu à un réglage des câbles d'extrémité A et D pour que leurs bords extérieurs définissent la largeur de nappe voulue Nc. Ce réglage porte à la fois sur la position des deux balancelles et des deux barres de réglage supportant ces deux câbles d'extrémité. En second lieu, il est procédé à un équilibrage des recouvrements par un réglage des câbles centraux B et C pour que leurs bords respectifs se superposent entre eux et avec les bords intérieurs des deux câbles d'extrémité sensiblement de façon similaire et conforme aux recouvrements nominaux de consigne R1 c, R2c, R3c entrés également par l'opérateur. Ici encore, le réglage porte à la fois sur la position des deux balancelles et des deux barres de réglage supportant ces deux câbles centraux. Enfin, en dernier lieu, un réglage portant sur l'ensemble des positions des balancelles et des barres de réglage supportant les câbles centraux et d'extrémité est effectué pour obtenir une largeur individuelle de câble conforme à la largeur individuelle de consigne Lc définie par le calculateur. On notera que la largeur individuelle des câbles est régulée pour obtenir les recouvrements de consigne qui ne peuvent être eux mêmes régulés au détriment de la régulation de la largeur totale de la nappe dont le respect est prioritaire.This real-time regulation is carried out according to three successive priority levels, the highest priority being given to obtaining a total width of the web corresponding to the setpoint width entered by the operator. For this purpose, the end cables A and D are first adjusted so that their outer edges define the desired web width Nc. This adjustment relates to both the position of the two swings and the two adjustment bars supporting these two end cables. Secondly, the overlaps are balanced by adjusting the central cables B and C so that their respective edges overlap with each other and with the inner edges of the two end cables substantially similarly and in accordance with the nominal overlaps. setpoint R1c, R2c, R3c also entered by the operator. Here again, the adjustment relates to both the position of the two swings and the two adjustment bars supporting these two central cables. Finally, lastly, an adjustment relating to all the positions of the swings and adjustment bars supporting the central and end cables is performed to obtain an individual cable width in accordance with the individual setpoint width Lc defined by the computer. It should be noted that the individual width of the cables is regulated to obtain setpoint recoveries which can not themselves be regulated to the detriment of the regulation of the total width of the sheet whose compliance has priority.

Dans l'exemple illustré, compte tenu de la proximité du détecteur 128 par rapport à la seconde barre de centrage 124, la correction de position d'un câble par le déplacement de la balancelle a un effet immédiat sur la position de ce câble. Par contre, la correction de largeur d'un câble par la commande de la rotation de la barre de réglage s'effectue avec un décalage de temps du fait à la fois de la distance (position déportée) existant entre ce détecteur et la barre de réglage 112 et de l'étalement non instantané des fils textiles formant le câble, d'où la nécessité de connaître (et de définir comme paramètres internes) à la fois cette distance et la vitesse d'avancée de la nappe.In the illustrated example, given the proximity of the detector 128 relative to the second centering bar 124, the position correction of a cable by the movement of the swing has an immediate effect on the position of this cable. On the other hand, the correction of the width of a cable by the control of the rotation of the adjustment bar takes place with a time offset due to both the distance (remote position) existing between this detector and the bar of setting 112 and non-instantaneous spreading of the textile son forming the cable, hence the need to know (and define as internal parameters) both this distance and the advancing speed of the web.

Claims (12)

  1. Apparatus for automatically controlling the spreading of a textile sheet made up of a plurality of tows coming from a tow feed module (12) for feeding to a drive module (14), the apparatus being characterized in that it comprises means (128) for measuring the positions of the longitudinal edges of each tow, means (112-116) for individually adjusting the width of each tow, means (118) for individually adjusting the position of each tow in a direction perpendicular to a tow advance direction, and digital processor means (134) responsive to said position measuring means to control said adjustment means in such a manner that said textile sheet presents determined width and position.
  2. Apparatus according to claim 1, characterized in that said means for measuring the positions of the longitudinal edges of each tow comprise a detector (128a, 128b, 128c, 128d), preferably a linear optical sensor made up of a plurality of light-emitting diodes (130a, 130b, 130c, 130d) placed in register with a plurality of light-receiving diodes (132a, 132b, 132c, 132d), and with the tow to be measured passing between them.
  3. Apparatus according to claim 1, characterized in that said means for measuring the positions of the longitudinal edges of each tow comprise a digital camera placed over said textile sheet.
  4. Apparatus according to claim 1, characterized in that said means for individually adjusting the width of each tow comprise a curved adjustment bar (112a, 112b, 112c, 112d) whose pivoting about a pivot axis (114a, 114b, 114c, 114d) under drive from a first actuator (116a, 116b, 116c, 116d) has the effect of modifying the position of the curvature of the central portion of the bar, thereby acting on the width of the tow passing over said curve adjustment bar.
  5. Apparatus according to claim 1, characterized in that said means for individually adjusting the position of each tow in a direction perpendicular to an advance direction of the tows comprise a second actuator (118a, 118b, 118c, 118d) acting on a bell crank (122a, 122b, 122c, 122d) and a connecting rod (120a, 120b, 120c, 120d) to move a slider (106a, 106b, 106c, 106d) supporting the tow.
  6. Apparatus according to claim 4 or claim 5, characterized in that said first and second actuators are electrically controlled actuators that are actuated directly by said digital processing means.
  7. Apparatus according to claim 2 and claim 6, characterized in that said digital control means include a microcomputer or a programmable controller which, on the basis of said measurements made by said position detectors, controls said first and second actuators for adjusting the width and the position of each tow in such a manner as to regulate the width and the position of said textile sheet on the basis of predetermined reference values.
  8. Apparatus according to claim 7, characterized in that said predetermined reference values comprise a total sheet width Nc, a nominal overlap between tows Rc, and an individual tow width Lc.
  9. Apparatus according to claim 8, characterized in that only the reference values relating to said total sheet width and to said nominal overlap are provided to said processor means by an operator, with the reference value relating to said individual tow width being calculated automatically by said processor means on the basis of said reference values provided by the operator.
  10. A method of automatically controlling the spreading of a textile sheet made up of a plurality of tows, in which, initially, detector means (128) are used to measure the positions of the longitudinal edges of each tow and a microcomputer or a programmable controller (134) is used to deduce an individual width value Li for each tow, an overlap value Ri between tows, and a total width value Ni of the textile sheet, after which said microcomputer or said programmable controller compares these measured values with corresponding predetermined reference values Lc, Rc, Nc, and finally actuators means (116, 118) are used to control individually the width and the position of each tow so as to cause the measured values to match the reference values, such that said textile sheet presents predetermined width and position.
  11. A method according to claim 10, characterized in that the width and the position of each tow is individually controlled as a function of three successive priority levels: firstly the total width of the textile sheet is adjusted to said predetermined reference value Nc, secondly overlaps between tows are balanced to comply with the predetermined reference overlap values Rc, and finally the individual width of each tow is adjusted to comply with the predetermined reference value Lc.
  12. A method according to claim 10, characterized in that the positions of the longitudinal edges of the tows are measured in a position that is offset relative to the positions of said actuators (116) for controlling the width of each tow.
EP20020706912 2001-03-02 2002-03-01 System for automated management for spreading a textile cable web Expired - Lifetime EP1373613B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0102867A FR2821628B1 (en) 2001-03-02 2001-03-02 AUTOMATED MANAGEMENT SYSTEM FOR THE SPREADING OF A TEXTILE TABLECLOTH
FR0102867 2001-03-02
PCT/FR2002/000743 WO2002070798A1 (en) 2001-03-02 2002-03-01 System for automated management for spreading a textile cable web

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EP1373613A1 EP1373613A1 (en) 2004-01-02
EP1373613B1 true EP1373613B1 (en) 2010-01-13

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EP (1) EP1373613B1 (en)
JP (1) JP4369123B2 (en)
KR (1) KR100787663B1 (en)
CN (1) CN100379913C (en)
AT (1) ATE455197T1 (en)
BR (1) BR0207431B1 (en)
CA (1) CA2439699C (en)
DE (1) DE60235070D1 (en)
FR (1) FR2821628B1 (en)
HU (1) HU228087B1 (en)
IL (1) IL157422A0 (en)
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EP1373613A1 (en) 2004-01-02
CN1494609A (en) 2004-05-05
US6687564B2 (en) 2004-02-03
BR0207431A (en) 2004-07-06
JP2004528490A (en) 2004-09-16
FR2821628B1 (en) 2003-05-16
FR2821628A1 (en) 2002-09-06
KR20030077648A (en) 2003-10-01
MXPA03007823A (en) 2004-11-12
HUP0400100A2 (en) 2004-04-28
ATE455197T1 (en) 2010-01-15
BR0207431B1 (en) 2013-11-12
HU228087B1 (en) 2012-10-29
UA74241C2 (en) 2005-11-15
JP4369123B2 (en) 2009-11-18
CN100379913C (en) 2008-04-09
CA2439699C (en) 2009-05-19
KR100787663B1 (en) 2007-12-21
HUP0400100A3 (en) 2008-09-29
US20020123819A1 (en) 2002-09-05
WO2002070798A1 (en) 2002-09-12
CA2439699A1 (en) 2002-09-12
RU2283382C2 (en) 2006-09-10
IL157422A0 (en) 2004-03-28
DE60235070D1 (en) 2010-03-04
WO2002070798A8 (en) 2004-06-03
RU2003127061A (en) 2005-02-27

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