EP0125945B1 - Method and installation for transferring and positioning workpieces - Google Patents

Method and installation for transferring and positioning workpieces Download PDF

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Publication number
EP0125945B1
EP0125945B1 EP84400692A EP84400692A EP0125945B1 EP 0125945 B1 EP0125945 B1 EP 0125945B1 EP 84400692 A EP84400692 A EP 84400692A EP 84400692 A EP84400692 A EP 84400692A EP 0125945 B1 EP0125945 B1 EP 0125945B1
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EP
European Patent Office
Prior art keywords
workpiece
station
conveying means
installation according
transfer means
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
Application number
EP84400692A
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German (de)
French (fr)
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EP0125945A1 (en
Inventor
Bernard Helffer
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.)
Institut Textile de France
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Institut Textile de France
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.)
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Publication date
Application filed by Institut Textile de France filed Critical Institut Textile de France
Priority to AT84400692T priority Critical patent/ATE25061T1/en
Publication of EP0125945A1 publication Critical patent/EP0125945A1/en
Application granted granted Critical
Publication of EP0125945B1 publication Critical patent/EP0125945B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/08—Holding devices, e.g. finger, needle, suction, for retaining articles in registered position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58—Article switches or diverters
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B25/00—Sewing units consisting of combinations of several sewing machines

Definitions

  • the present invention relates to the automatic handling of parts, in particular during the course of a production, when the parts which come from a processing station in a given direction and a position must be presented in a second processing station in a direction and a predetermined position different from those they have in the first post.
  • the invention relates preferably to the manufacture of textile articles, during which the textile pieces, which are unit parts of the article, pass from one station to another to undergo all the hemming operations. , folding, assembling, sewing ... which will give birth to the fully made article.
  • the object of the invention is to provide a method which not only performs the transfer but also the positioning in the sense that it changes the orientation of the part.
  • the method according to the invention is characterized by the features of claim 1.
  • This method can be implemented in a transfer installation which, according to the invention, is characterized by the features of claim 4.
  • the part is fed from the first station by sliding on a flat surface thanks to the displacement of the first means of transport which can be a belt; when the part reaches the first given location, the movable table, the sliding surface of which is in the high position in line with the sliding surface of the first station, lowers, thus releasing the part from contact with the first means of transport.
  • the workpiece is supported by the transfer means which transfers it by sliding on the mobile table, from the first to the second given location while giving it the position and orientation determined when it reaches said second location.
  • the movable table is raised and the part, freed from the transfer means, is taken up by the second transport means which transfers the part, by sliding on a surface which is in the extension of the sliding surface of the movable table in the high position, at the second position in the predetermined direction and position.
  • the means for lowering the movable table when the workpiece reaches the first given location comprises a position sensor element which materializes the first given location and a support element which exerts on the table sufficient pressure for it to pass from the position high to low position.
  • the high position corresponds to that where the part is both in contact with the first means of transport of the first station and with the surface of the table; the low position corresponds to that where the part is only in contact with the table surface, and is therefore no longer driven by the first means of transport.
  • the position sensor element controls the vertical movement of the support element so that, taking into account the mechanical inertia, the part reaches the first given location when the support element has passed the table. the high position to the low position.
  • the transfer means comprises a displacement member, which by moving can rotate on itself around an axis perpendicular to the plane of displacement.
  • the movement member is itself the support element which moves the table in height. So when the position sensor element detects the presence of the part, the support and displacement element is applied to the part as soon as it has reached the first given location, the pressure exerted on the part puts the table in position low, which releases the part from the first means of transport, and simultaneously the support and displacement element moves the part on the table to the second given location.
  • the support and displacement element from the first to the second given location, it turns on itself around an axis perpendicular to the plane of displacement, so that the part has the predetermined position when it reaches the second location given.
  • the means for raising the movable table when the workpiece reaches the second given location comprises a second position sensor element which corresponds to the second given location and a counter-support element which brings the movable table back from the low position, where it holds it. support element, in the high position.
  • the second position sensor element controls the raising of the support element, so that, taking into account the mechanical inertia, the part reaches the second given location when, the support element no longer exerting its pressure on the table, it goes up.
  • the part is then taken over by the second means of transport, which can be one or more belts having the predetermined direction; in this case the belt drives the part by sliding towards the second station in the predetermined position and direction. It is generally preferable to facilitate the adjustments that the belts ensuring the transfers to the first and to the second station have perpendicular directions.
  • the transfer and positioning installation comprises a table 1 movable in height, that is, as shown in FIGS. 1 and 2, that said table can pivot around an axis 2 parallel to the direction of supply of the part, or that table 1 can move entirely vertically.
  • the surface of table 1 when the latter is in the high position, is in the same plane with on the one hand the sliding surface corresponding to the first station from which the part originates and on the other hand to that corresponding to the second post to which it is directed. Furthermore, these three surfaces are approximately contiguous, so that a part can pass by sliding from one to the other without the formation of folds or other defects.
  • the belt 3, which conveys the part of the first station extends both over the sliding surface of said first station and over a part of the table 1.
  • a window 4 made in table 1 and a lamp not shown are placed opposite a photoelectric cell 5.
  • the element of support and displacement consists of a comb 8 which comprises two fingers 9 and 10, one of which 9 is mounted fixed on the carriage 6 while the other 10 can pivot around the vertical axis constituted by finger 9.
  • the comb 8 moves up and down thanks to the opening of the trigger 11, opening controlled by the photoelectric cell 5 when it detects the presence of the part on the table 1 at the right of the window 4.
  • the comb 8 moves laterally thanks to the movement of the carriage 6 itself.
  • the finger 10 pivots by a certain angle around the finger 9: this pivoting is obtained by the combined action of the compression spring 12 which tends to repel the finger 9, and of the roller 13 which limits this pivoting, the roller 13 being integral with the comb 8 and bearing on a ramp 14.
  • the angle of this ramp 14 relative to the predetermined direction 6 is adjustable by means of the screw 15, the ramp 14 being biased against this screw by a spring not shown.
  • a stop 16 triggers the raising of the comb 8 by pressing on the lever 17, integral with the comb 8.
  • the complete movement cycle of the comb 8 therefore comprises 4 continuous phases: descent, lateral movement for example of left to right in Figure 1, ascent, moving from right to left.
  • a guide assembly a part of which consists of a wheel 18 is integral with the lever 17 and therefore of the carriage 6 and the other part of which, consisting of two bars 19 and 20, is fixed relative to to the carriage 6.
  • the bar 19 parallel to the bar 20 is mounted above the latter. One of its ends is located opposite the trigger 11, while the other end overhangs the corresponding end of the bar 20.
  • the operation of the transfer and positioning installation is as follows.
  • the part 23 is conveyed by means of the belt 3 by sliding on the horizontal sliding surface of the first station and then partially on the table 1 (FIG. 2A).
  • the interruption of the illumination of the lamp located below this window is detected by the photoelectric cell 5, which controls the opening of the trigger 11.
  • the wheel 18 which was held between the trigger 11 and the bar 19 is released, and authorizes the descent of the comb 8 until the caster 18 meets the bar 20.
  • the comb 8 in lowering rests on the part 23 at the 'using fingers 9 and 10, and exerts pressure on the table 1 which pivots around the axis 2 ( Figure 2B).
  • the comb 8 drives the part 23 which slides on the inclined surface of the table 1 (FIG. 2C).
  • the inclination of the table 1 is identical to that of the bars 19 and 20 relative to the horizontal, since it is the movement of the caster 18 along the rod 20 which guides the movement of the comb 8.
  • the roller 13 secured to the comb 8 follows the direction of the ramp 14 against which it is pressed under the effect of the compression spring 12: thus during this lateral displacement, the finger 10, which follows the movement of the roller 13, pivots around the vertical axis formed by the finger 9. This relative movement of the two fingers 9 and 10 relative to one another makes it possible to give the part 23 the desired position.
  • the angle by which the part will pivot around the fixed finger 9, during lateral movement from left to right can be adjusted by modifying the angle formed by the ramp 14 relative to in the direction of transfer of the carriage, by action on the adjusting screw 15.
  • the stop 16 bears on the lever 17 secured to the carriage 6. By tilting, the lever 17 raises both the caster 18 and the comb 8.
  • the comb 8 no longer exerts pressure on the table 1, and the latter returns to the high position under the effect of the counterweight 24: the part 23 comes into contact with the belts 21 and 22 which have the determined direction, and is driven by them in the position and the direction determined by sliding first on a part of the table 1 then on the sliding surface of the second station (FIG. 2D).
  • the connecting rod-crank continues to drive the carriage 6: the caster 18, raised under the action of the lever 17, is passed over the rod 19 and guides in its movement from right to left the comb 8 towards the position initial.
  • a new part 23 is supplied from the first station, and the cycle resumes.
  • the part 23 is a sleeve from of a first finishing station having effected for example the hemming or the colleting of the bottom of the sleeve (25), then the folding (26) of the sleeve along an axis of symmetry 27 and so that there has exact overlap of the two parts of the sleeve one over the other.
  • the part 23 must be closed; this closure is effected by sewing the two edges 28, adjusted and superimposed.
  • the installation according to the invention includes all the adjustments necessary for changes of parts and position, in particular adjustment of the ramp (14) by the screw (15) but also adjustment of the finger (s) (9 and 10) depending of the size of the parts, adjustment of the opto-electronic sensor control delay as a function of the choice of the first location, adjustment of the stop (16) and of the stroke of the crank-rod (7) as a function of the length of the displacement lateral desired.

Abstract

Transfer and positioning apparatus including a vertically adjustable table, a workpiece introducing belt adapted to slidably move an underlying workpiece into a first location on the table. At the first location, the workpiece is engaged by fingers which depress the table to disengage the workpiece from the belt and subsequently move the workpiece across the table to a second location while changing the direction and orientation of the workpiece. At the second station, the fingers are elevated, allowing an elevation of the table and an engagement of the workpiece with a second belt which in turn slides the workpiece from the table to a second station.

Description

La présente invention concerne la manutention automatique de pièces, notamment au cours du déroulement d'une fabrication, lorsque les pièces qui proviennent d'un poste de traitement dans une direction et une position données doivent être présentées dans un second poste de traitement dans une direction et une position prédéterminées différentes de celles qu'elles possèdent dans le premier poste. L'invention a trait de manière préférentielle à la confection d'articles textiles, au cours de laquelle les pièces textiles, qui sont des parties unitaires de l'article, passent d'un poste à un autre pour subir toutes les opérations d'ourlage, pliage, assemblage, couture... qui donneront naissance à l'article entièrement confectionné.The present invention relates to the automatic handling of parts, in particular during the course of a production, when the parts which come from a processing station in a given direction and a position must be presented in a second processing station in a direction and a predetermined position different from those they have in the first post. The invention relates preferably to the manufacture of textile articles, during which the textile pieces, which are unit parts of the article, pass from one station to another to undergo all the hemming operations. , folding, assembling, sewing ... which will give birth to the fully made article.

On connaît déjà, par la demande de brevet français N° 79 13 658, un procédé et une installation pour amener à un second poste, dans une position et orientation fixes prédéterminées, une pièce, notamment une pièce souple en feuille telle qu'une étoffe, qui se trouve dans un premier poste dans une position approximative. Le fait que la pièce se trouve au premier poste dans une position approximative nécessite l'utilisation de moyens de repérage de la position de la pièce par rapport à un repère fixe, en sorte que les moyens de transfert se placent sur la pièce en fonction des informations transmises par les moyens de repérage et transfèrent celle-ci au second poste dans la position et orientation fixes prédéterminées.Already known, from French patent application No. 79 13 658, a method and an installation for bringing to a second station, in a predetermined fixed position and orientation, a part, in particular a flexible sheet part such as a fabric , which is in a first position in an approximate position. The fact that the part is at the first station in an approximate position requires the use of means for locating the position of the part with respect to a fixed mark, so that the transfer means are placed on the part according to the information transmitted by the tracking means and transfer it to the second station in the predetermined fixed position and orientation.

L'inconvénient majeur des techniques connues, comme celle décrite dans la demande précitée, réside dans la succession d'opérations indépendantes les unes des autres qui augmente le temps nécessaire à l'accomplissement d'un cycle complet. Il est déjà connu du document US-A-3 640 235 un procédé pour transférer une pièce depuis un premier poste d'où elle est alimentée par glissement sur une surface plane grâce à un premier moyen de transport dans une direction donnée jusqu'au second poste où ladite pièce est menée par glissement sur une surface plane dans une direction prédéterminée, différente de celle qu'elle possède au premier poste. Le procédé connu comprend les étapes suivantes :

  • a. lorsque la pièce atteint un premier emplacement donné, elle est dégagée du premier moyen de transport et presque simultanément prise en charge par un moyen de transfert,
  • b. elle est ensuite transférée vers le second poste par le moyen de transfert,
  • c. lorsque la pièce atteint un second emplacement donné où elle a la position prédéterminée, elle est dégagée du moyen de transfert et presque simultanément prise en charge par un second moyen de transport qui la transfère au second poste dans la direction prédéterminée.
The major drawback of known techniques, such as that described in the aforementioned application, lies in the succession of operations independent of each other which increases the time necessary for the completion of a complete cycle. It is already known from document US-A-3 640 235 a method for transferring a part from a first station from where it is supplied by sliding on a flat surface by means of a first means of transport in a given direction to the second station where said part is led by sliding on a flat surface in a predetermined direction, different from that which it has at the first station. The known method comprises the following steps:
  • at. when the part reaches a first given location, it is released from the first means of transport and almost simultaneously taken care of by a transfer means,
  • b. it is then transferred to the second station by the transfer means,
  • vs. when the part reaches a second given location where it has the predetermined position, it is released from the transfer means and almost simultaneously taken up by a second transport means which transfers it to the second station in the predetermined direction.

L'objet de l'invention est de prévoir une méthode qui effectue non seulement le transfert mais également le positionnement en ce sens qu'il modifie l'orientation de la pièce.The object of the invention is to provide a method which not only performs the transfer but also the positioning in the sense that it changes the orientation of the part.

Le procédé selon l'invention est caractérisé par les caractéristiques de la revendication 1.The method according to the invention is characterized by the features of claim 1.

Ce procédé peut être mis en oeuvre dans une installation de transfert qui, conformément à l'invention, est caractérisée par les caractéristiques de la revendication 4.This method can be implemented in a transfer installation which, according to the invention, is characterized by the features of claim 4.

La pièce est alimentée du premier poste par glissement sur une surface plane grâce au déplacement du premier moyen de transport qui peut être une courroie ; lorsque la pièce atteint le premier emplacement donné, la table mobile dont la surface de glissement est en position haute dans le prolongement de la surface de glissement du premier poste, s'abaisse, dégageant ainsi la pièce du contact avec le premier moyen de transport. Simultanément à l'abaissement de la table mobile, la pièce est prise en charge par le moyen de transfert qui la transfère par glissement sur la table mobile, du premier au second emplacement donné tout en lui conférant la position et l'orientation déterminées lorsqu'elle atteint ledit second emplacement. Simultanément, lorsque la pièce atteint ce second emplacement donné, la table mobile se relève et la pièce, libérée du moyen de transfert, est prise en charge par le second moyen de transport qui transfère la pièce, par glissement sur une surface qui est dans le prolongement de la surface de glissement de la table mobile en position haute, au second poste dans la direction et la position prédéterminées.The part is fed from the first station by sliding on a flat surface thanks to the displacement of the first means of transport which can be a belt; when the part reaches the first given location, the movable table, the sliding surface of which is in the high position in line with the sliding surface of the first station, lowers, thus releasing the part from contact with the first means of transport. Simultaneously with the lowering of the mobile table, the workpiece is supported by the transfer means which transfers it by sliding on the mobile table, from the first to the second given location while giving it the position and orientation determined when it reaches said second location. Simultaneously, when the part reaches this second given location, the movable table is raised and the part, freed from the transfer means, is taken up by the second transport means which transfers the part, by sliding on a surface which is in the extension of the sliding surface of the movable table in the high position, at the second position in the predetermined direction and position.

Les moyens pour abaisser la table mobile lorsque la pièce atteint le premier emplacement donné comprennent un élément capteur de position qui matérialise le premier emplacement donné et un élément d'appui qui exerce sur la table une pression suffisante pour que celle-ci passe de la position haute à la position basse. La position haute correspond à celle où la pièce est à la fois en contact avec le premier moyen de transport du premier poste et avec la surface de la table ; la position basse correspond à celle où la pièce est uniquement en contact avec la surface de la table, et n'est donc plus entraînée par le premier moyen de transport. L'élément capteur de position commande le déplacement vertical de l'élément d'appui de telle sorte que, compte tenu de l'inertie mécanique, la pièce atteigne le premier emplacement donné lorsque l'élément d'appui a fait passer la table de la position haute à la position basse.The means for lowering the movable table when the workpiece reaches the first given location comprises a position sensor element which materializes the first given location and a support element which exerts on the table sufficient pressure for it to pass from the position high to low position. The high position corresponds to that where the part is both in contact with the first means of transport of the first station and with the surface of the table; the low position corresponds to that where the part is only in contact with the table surface, and is therefore no longer driven by the first means of transport. The position sensor element controls the vertical movement of the support element so that, taking into account the mechanical inertia, the part reaches the first given location when the support element has passed the table. the high position to the low position.

Le moyen de transfert comporte un organe de déplacement, qui en se déplaçant peut tourner sur lui-même autour d'un axe perpendiculaire au plan du déplacement. Avantageusement l'organe du déplacement est lui-même l'élément d'appui qui déplace la table en hauteur. Ainsi lorsque l'élément capteur de position détecte la présence de la pièce, l'élément d'appui et de déplacement vient s'appliquer sur la pièce dès que celle-ci a atteint le premier emplacement donné, la pression exercée sur la pièce met la table en position basse, ce qui dégage la pièce du premier moyen de transport, et simultanément l'élément d'appui et de déplacement déplace la pièce sur la table vers le second emplacement donné. Pendant le déplacement de l'élément d'appui et de déplacement du premier au second emplacement donnés, il tourne sur lui-même autour d'un axe perpendiculaire au plan de déplacement, de sorte que la pièce ait la position prédéterminée lorsqu'elle atteint le second emplacement donné.The transfer means comprises a displacement member, which by moving can rotate on itself around an axis perpendicular to the plane of displacement. Advantageously, the movement member is itself the support element which moves the table in height. So when the position sensor element detects the presence of the part, the support and displacement element is applied to the part as soon as it has reached the first given location, the pressure exerted on the part puts the table in position low, which releases the part from the first means of transport, and simultaneously the support and displacement element moves the part on the table to the second given location. During the displacement of the support and displacement element from the first to the second given location, it turns on itself around an axis perpendicular to the plane of displacement, so that the part has the predetermined position when it reaches the second location given.

Les moyens pour relever la table mobile lorsque la pièce atteint le second emplacement donné comprennent un second élément capteur de position qui correspond au second emplacement donné et un élément de contre-appui qui fait revenir la table mobile de la position basse, où la maintenait l'élément d'appui, à la position haute. Avantageusement le second élément capteur de position commande le relèvement de l'élément d'appui, de telle sorte que, compte tenu de l'inertie mécanique, la pièce atteigne le second emplacement donné lorsque, l'élément d'appui n'exerçant plus sa pression sur la table, celle-ci passe en position haute. A cet instant la pièce est alors prise en charge par le second moyen de transport, qui peut être une ou plusieurs courroies ayant la direction prédéterminée ; dans ce cas la courroie entraîne la pièce par glissement vers le second poste dans la position et la direction prédéterminées. Il est généralement préférable pour faciliter les réglages que les courroies assurant les transferts au premier et au second poste aient des directions perpendiculaires. The means for raising the movable table when the workpiece reaches the second given location comprises a second position sensor element which corresponds to the second given location and a counter-support element which brings the movable table back from the low position, where it holds it. support element, in the high position. Advantageously, the second position sensor element controls the raising of the support element, so that, taking into account the mechanical inertia, the part reaches the second given location when, the support element no longer exerting its pressure on the table, it goes up. At this instant the part is then taken over by the second means of transport, which can be one or more belts having the predetermined direction; in this case the belt drives the part by sliding towards the second station in the predetermined position and direction. It is generally preferable to facilitate the adjustments that the belts ensuring the transfers to the first and to the second station have perpendicular directions.

Un mode de réalisation de l'installation pour la mise en oeuvre du procédé selon la présente invention et un exemple d'application sont décrits ci-après à titre d'exemples non limitatifs en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective d'une installation de transfert et de positionnement,
  • les figures 2A, 2B, 2C et 2D sont des représentations schématiques des différentes étapes du fonctionnement de l'installation,
  • la figure 3 représente un exemple d'application du procédé à la fermeture des manches.
An embodiment of the installation for implementing the method according to the present invention and an example of application are described below by way of nonlimiting examples with reference to the appended drawings in which:
  • FIG. 1 is a perspective view of a transfer and positioning installation,
  • FIGS. 2A, 2B, 2C and 2D are schematic representations of the different stages of the operation of the installation,
  • FIG. 3 represents an example of application of the method for closing the sleeves.

L'installation de transfert et de positionnement comporte une table 1 mobile en hauteur, soit, comme cela est représenté aux figures 1 et 2, que ladite table peut pivoter autour d'un axe 2 parallèle à la direction d'alimentation de la pièce, soit que la table 1 peut se déplacer tout entière verticalement. La surface de la table 1, lorsque celle-ci est en position haute, est dans le même plan avec d'une part la surface de glissement correspondant au premier poste d'où provient la pièce et d'autre part à celle correspondant au second poste vers lequel elle est dirigée. Par ailleurs ces trois surfaces sont approximativement jointives, de sorte qu'une pièce peut passer par glissement de l'une à l'autre sans qu'il y ait formation de plis ou autres défauts. La courroie 3, qui véhicule la pièce du premier poste, s'étend à la fois sur la surface de glissement dudit premier poste et sur une partie de la table 1. A proximité immédiate de l'emplacement de la courroie 3, une fenêtre 4 pratiquée dans la table 1 et une lampe non représentée sont placées en regard d'une cellule photo-électrique 5. Monté sur un chariot 6, déplaçable d'avant en arrière grâce à un système 7 de bielle-manivelle, l'élément d'appui et de déplacement consiste en un peigne 8 qui comporte deux doigts 9 et 10, dont l'un 9 est monté fixe sur le chariot 6 tandis que l'autre 10 peut pivoter autour de l'axe vertical constitué par le doigt 9. Le peigne 8 se déplace de haut en bas grâce à l'ouverture de la gâchette 11, ouverture commandée par la cellule photoélectrique 5 quand elle détecte la présence de la pièce sur la table 1 au droit de la fenêtre 4. Le peigne 8 se déplace latéralement grâce au déplacement du chariot 6 lui-même. Pendant le déplacement latéral du peigne 8, le doigt 10 pivote d'un certain angle autour du doigt 9 : ce pivotement est obtenu par l'action conjuguée du ressort de compression 12 qui tend à repousser le doigt 9, et du galet 13 qui limite ce pivotement, le galet 13 étant solidaire du peigne 8 et prenant appui sur une rampe 14. L'angle de cette rampe 14 par rapport à la direction prédéterminée 6 est réglable au moyen de la vis 15, la rampe 14 étant rappelée contre cette vis par un ressort non représenté. En fin de course du chariot 6 une butée 16 déclenche le relèvement du peigne 8 en prenant appui sur le levier 17, solidaire du peigne 8. Le cycle complet de déplacement du peigne 8 comprend donc 4 phases continues : descente, déplacement latéral par exemple de gauche à droite sur la figure 1, remontée, déplacement de droite à gauche. Le bon fonctionnement de ce cycle est assuré par un ensemble guide, dont une partie constituée par une roulette 18 est solidaire du levier 17 et donc du chariot 6 et dont l'autre partie, constituée par deux barres 19 et 20, est fixe par rapport au chariot 6. La barre 19 parallèle à la barre 20 est montée au-dessus de celle-ci. L'une de ses extrémités est située en regard de la gâchette 11, tandis que l'autre extrémité surplombe l'extrémité correspondante de la barre 20. Les courroies 21 et 22, qui ont la direction prédéterminée, perpendiculaire à celle de la courroie 3, et qui assurent le transfert de la pièce vers le second poste, s'étendent à la fois sur la surface de glissement dudit second poste et sur une partie de la table 1.The transfer and positioning installation comprises a table 1 movable in height, that is, as shown in FIGS. 1 and 2, that said table can pivot around an axis 2 parallel to the direction of supply of the part, or that table 1 can move entirely vertically. The surface of table 1, when the latter is in the high position, is in the same plane with on the one hand the sliding surface corresponding to the first station from which the part originates and on the other hand to that corresponding to the second post to which it is directed. Furthermore, these three surfaces are approximately contiguous, so that a part can pass by sliding from one to the other without the formation of folds or other defects. The belt 3, which conveys the part of the first station, extends both over the sliding surface of said first station and over a part of the table 1. In the immediate vicinity of the location of the belt 3, a window 4 made in table 1 and a lamp not shown are placed opposite a photoelectric cell 5. Mounted on a carriage 6, movable from front to back thanks to a system 7 of connecting rod-crank, the element of support and displacement consists of a comb 8 which comprises two fingers 9 and 10, one of which 9 is mounted fixed on the carriage 6 while the other 10 can pivot around the vertical axis constituted by finger 9. The comb 8 moves up and down thanks to the opening of the trigger 11, opening controlled by the photoelectric cell 5 when it detects the presence of the part on the table 1 at the right of the window 4. The comb 8 moves laterally thanks to the movement of the carriage 6 itself. During the lateral displacement of the comb 8, the finger 10 pivots by a certain angle around the finger 9: this pivoting is obtained by the combined action of the compression spring 12 which tends to repel the finger 9, and of the roller 13 which limits this pivoting, the roller 13 being integral with the comb 8 and bearing on a ramp 14. The angle of this ramp 14 relative to the predetermined direction 6 is adjustable by means of the screw 15, the ramp 14 being biased against this screw by a spring not shown. At the end of the carriage 6 travel, a stop 16 triggers the raising of the comb 8 by pressing on the lever 17, integral with the comb 8. The complete movement cycle of the comb 8 therefore comprises 4 continuous phases: descent, lateral movement for example of left to right in Figure 1, ascent, moving from right to left. The proper functioning of this cycle is ensured by a guide assembly, a part of which consists of a wheel 18 is integral with the lever 17 and therefore of the carriage 6 and the other part of which, consisting of two bars 19 and 20, is fixed relative to to the carriage 6. The bar 19 parallel to the bar 20 is mounted above the latter. One of its ends is located opposite the trigger 11, while the other end overhangs the corresponding end of the bar 20. The belts 21 and 22, which have the predetermined direction, perpendicular to that of the belt 3 , and which ensure the transfer of the part to the second station, extend both over the sliding surface of said second station and over part of the table 1.

Le fonctionnement de l'installation de transfert et de positionnement est le suivant. La pièce 23 est véhiculée grâce à la courroie 3 par glissement sur la surface horizontale de glissement du premier poste puis partiellement sur la table 1 (figure 2A). Lorsqu'elle passe au droit de la fenêtre 4, l'interruption de l'éclairement de la lampe située en dessous de cette fenêtre est détectée par la cellule photo-électrique 5, qui commande l'ouverture de la gâchette 11. La roulette 18 qui était maintenue entre la gâchette 11 et la barre 19 est libérée, et autorise la descente du peigne 8 jusqu'à ce que la roulette 18 rencontre la barre 20. Le peigne 8 en s'abaissant s'appuie sur la pièce 23 à l'aide des doigts 9 et 10, et exerce une pression sur la table 1 qui pivote autour de l'axe 2 (figure 2B). Lors du déplacement de gauche à droite du chariot 6 sous l'effet de la bielle-manivelle 7, le peigne 8 entraîne la pièce 23 qui glisse sur la surface inclinée de la table 1 (figure 2C). L'inclinaison de la table 1 est identique à celle des barres 19 et 20 par rapport à l'horizontale, puisque c'est le déplacement de la roulette 18 le long de la tige 20 qui guide le déplacement du peigne 8. Pendant le même déplacement du chariot 6, le galet 13 solidaire du peigne 8 suit la direction de la rampe 14 contre laquelle il est appuyé sous l'effet du ressort de compression 12 : ainsi pendant ce déplacement latéral, le doigt 10, qui suit le mouvement du galet 13, pivote autour de l'axe vertical formé par le doigt 9. Ce mouvement relatif des deux doigts 9 et 10 l'un par rapport à l'autre permet de donner à la pièce 23 la position désirée. En fonction des pièces à traiter sur l'installation, l'angle selon lequel la pièce va pivoter autour du doigt fixe 9, pendant le déplacement latéral de gauche à droite, peut être réglé en modifiant l'angle formé par la rampe 14 par rapport à la direction du transfert du chariot, par action sur la vis de réglage 15. En fin de ce déplacement latéral, la butée 16 prend appui sur le levier 17 solidaire du chariot 6. En basculant, le levier 17 relève à la fois la roulette 18 et le peigne 8. Une fois relevé, le peigne 8 n'exerce plus de pression sur la table 1, et celle-ci retrouve la position haute sous l'effet du contrepoids 24 : la pièce 23 vient en contact avec les courroies 21 et 22 qui ont la direction déterminée, et est entraînée par elles dans la position et la direction déterminées par glissement d'abord sur une partie de la table 1 puis sur la surface de glissement du second poste (figure 2D). Pendant ce temps, la bielle-manivelle poursuit l'entraînement du chariot 6 : la roulette 18, relevée sous l'action du levier 17, est passée sur la tige 19 et guide dans son déplacement de droite à gauche le peigne 8 vers la position initiale. Une nouvelle pièce 23 est alimentée du premier poste, et le cycle reprend.The operation of the transfer and positioning installation is as follows. The part 23 is conveyed by means of the belt 3 by sliding on the horizontal sliding surface of the first station and then partially on the table 1 (FIG. 2A). When it passes to the right of window 4, the interruption of the illumination of the lamp located below this window is detected by the photoelectric cell 5, which controls the opening of the trigger 11. The wheel 18 which was held between the trigger 11 and the bar 19 is released, and authorizes the descent of the comb 8 until the caster 18 meets the bar 20. The comb 8 in lowering rests on the part 23 at the 'using fingers 9 and 10, and exerts pressure on the table 1 which pivots around the axis 2 (Figure 2B). When moving from left to right of the carriage 6 under the effect of the connecting rod-crank 7, the comb 8 drives the part 23 which slides on the inclined surface of the table 1 (FIG. 2C). The inclination of the table 1 is identical to that of the bars 19 and 20 relative to the horizontal, since it is the movement of the caster 18 along the rod 20 which guides the movement of the comb 8. During the same displacement of the carriage 6, the roller 13 secured to the comb 8 follows the direction of the ramp 14 against which it is pressed under the effect of the compression spring 12: thus during this lateral displacement, the finger 10, which follows the movement of the roller 13, pivots around the vertical axis formed by the finger 9. This relative movement of the two fingers 9 and 10 relative to one another makes it possible to give the part 23 the desired position. Depending on the parts to be treated on the installation, the angle by which the part will pivot around the fixed finger 9, during lateral movement from left to right, can be adjusted by modifying the angle formed by the ramp 14 relative to in the direction of transfer of the carriage, by action on the adjusting screw 15. At the end of this lateral displacement, the stop 16 bears on the lever 17 secured to the carriage 6. By tilting, the lever 17 raises both the caster 18 and the comb 8. Once raised, the comb 8 no longer exerts pressure on the table 1, and the latter returns to the high position under the effect of the counterweight 24: the part 23 comes into contact with the belts 21 and 22 which have the determined direction, and is driven by them in the position and the direction determined by sliding first on a part of the table 1 then on the sliding surface of the second station (FIG. 2D). During this time, the connecting rod-crank continues to drive the carriage 6: the caster 18, raised under the action of the lever 17, is passed over the rod 19 and guides in its movement from right to left the comb 8 towards the position initial. A new part 23 is supplied from the first station, and the cycle resumes.

La mise en oeuvre du procédé et de l'installation selon l'invention est particulièrement adaptée à la fermeture des manches courtes telles que des manches de tee-shirt, comme le montre la figure 3. Dans ce cas la pièce 23 est une manche provenant d'un premier poste de finition ayant effectué par exemple l'ourlage ou le colletage du bas de la manche (25), puis le pliage (26) de la manche selon un axe de symétrie 27 et de façon à ce qu'il y ait recouvrement exact des deux parties de la manche l'une sur l'autre. Une fois pliée, la pièce 23 doit être fermée ; cette fermeture s'effectue par couture des deux bords 28, ajustés et superposés. Compte tenu de la conformation de la manche 23, il est alors nécessaire d'amener la ligne de couture 28 sous la machine à coudre 29 dans une direction et une position différentes de celles qu'elle avait en sortant du pliage 26. Comme montré sur la figure 3, il faut à la fois transférer la manche 23 du poste de pliage 26 au poste de couture 30 et lui faire subir une rotation partielle sur elle-même, de manière à placer exactement la ligne de couture 28 en position et en direction sous la machine à coudre.The implementation of the method and the installation according to the invention is particularly suitable for closing short sleeves such as t-shirt sleeves, as shown in Figure 3. In this case the part 23 is a sleeve from of a first finishing station having effected for example the hemming or the colleting of the bottom of the sleeve (25), then the folding (26) of the sleeve along an axis of symmetry 27 and so that there has exact overlap of the two parts of the sleeve one over the other. Once folded, the part 23 must be closed; this closure is effected by sewing the two edges 28, adjusted and superimposed. Given the shape of the sleeve 23, it is then necessary to bring the seam line 28 under the sewing machine 29 in a direction and a position different from that which it had when leaving the folding 26. As shown on FIG. 3, it is necessary both to transfer the sleeve 23 from the folding station 26 to the sewing station 30 and to make it undergo a partial rotation on itself, so as to exactly place the seam line 28 in position and in direction under the sewing machine.

Bien entendu l'installation selon l'invention comporte tous les réglages nécessaires aux changements de pièces et de position, notamment réglage de la rampe (14) par la vis (15) mais également réglage du ou des doigts (9 et 10) en fonction de la taille des pièces, réglage de délai de commande du capteur opto-électronique en fonction du choix du premier emplacement, réglage de la butée (16) et de la course de la bielle-manivelle (7) en fonction de la longueur du déplacement latéral souhaitée.Of course, the installation according to the invention includes all the adjustments necessary for changes of parts and position, in particular adjustment of the ramp (14) by the screw (15) but also adjustment of the finger (s) (9 and 10) depending of the size of the parts, adjustment of the opto-electronic sensor control delay as a function of the choice of the first location, adjustment of the stop (16) and of the stroke of the crank-rod (7) as a function of the length of the displacement lateral desired.

Claims (15)

1. A process for transferring a workpiece (23) from a first station (26) from which it is supplied by sliding over a flat surface thanks to a first conveying means (3) in a given direction, up to a second station (30) where it is taken by sliding over a flat surface in predetermined direction which differs from the one that it presents at the first station (26), said process comprising the following steps :
a) when the workpiece reaches a first given location, the workpiece (23) is released from the first conveying means (3) and almost simultaneously taken over by a so-called transfer means (8),
b) the workpiece is then transferred towards the second station (30) by the transfer means (8),
c) when the workpiece (23) reaches a second given location, it is released from the transfer means (8) and simultaneously taken over by a second conveying means (21, 22) which transfers it to the second station in the predetermined direction,

characterized in that the sliding surface (1) is adapted to be mobile heightwise, whereas the conveying means (3, 21, 22) are mounted above said sliding surface so that the lowering, respectively the raising, of said surface makes it possible to release, respectively to engage, the workpiece (23) of the first conveying means with the second conveying means (3, 21, 22) nearly simultaneously with the engagement, respectively the release, of the workpiece (23) with the transfer means (8).
2. The process according to claim 1, characterized in that the given direction at the first station is perpendicular to the predetermined direction at the second station.
3. The process according to claim 1, characterized in that the transfer means (8) provides for both the transfer and the change in orientation of the workpiece (23).
4. An installation for transferring a workpiece (23) from a first station (26) from which it is supplied by sliding over a flat surface thanks to a first conveying means (3) in a given direction up to a second station (30) where it is taken by sliding over a flat surface in a predetermined direction which differs from the one that it presents at the first station (26), of the type comprising :
a) a flat table (1) over which the workpiece (23) slides,
b) a transfer means (8) adapted to take over the workpiece (23) as soon as the latter reaches the first given location, to transfer the workpiece (23) from the first to the second given location,
c) a second conveying means (21, 22) for transferring the workpiece (23) to the second station (30) in the predetermined direction, adapted to take over the workpiece (23) as soon as the latter reaches the second given location, characterized in that the flat table (1) is mobile in height an in that the conveying means (3, 21, 22) are mounted above the table, the transfer means (8, 9, 10) are mounted between the conveying means und push, in the active position, a workpiece supplied by the first conveying means (3) on the table up to a first given location on the table surface, simultaneously releasing the workpiece from the conveying means (3) thanks to the table being lowered or by the action of the transfer means (8, 9, 10) which lower the table, the transfer means then causing the workpiece to slide over the table surface up to a second given location above the second conveying means (21, 22) directing the workpiece towards a predetermined position where the table is raised to reach the height of the second conveying means (21, 22) which simultaneously engages and takes over the workpiece from the table.
5. Installation according to claim 4, characterized in that the table (1) may pivot about an axis (2) parallel to the initial direction of the workpiece (23) at the first station (26), and adopt a high position where its surface is in the same plane as the sliding surfaces of the first and of the second station, and a low position where its surface is below the plane of these two surfaces.
6. Installation according to claim 4, characterized in that the means (3, 21, 22) for transferring the workpiece (23) to the first (26) and to the second (30) station are belts which drive said workpiece by sliding.
7. Installation according to any one of claims 4 to 6, characterized in that the means for lowering the mobile table (1) comprise a position sensor element (4-5) and a bearing element (8) which exerts on the table (1) a pressure sufficient for the latter to pass from the high position to the low position, and in that the position sensor element consists of an opto-electronic assembly (4-5) located in the immediate vicinity of the first conveying means (3), which controls the lowering of the bearing element (8) when it detects the presence of the workpiece (23) which cuts off the light beam.
8. Installation according to any one of claims 4 to 7, characterized in that the transfer means (8) consists of a comb element (8) displaceable laterally and in height and associated with means adapted to pivot it and cause the workpiece (23) to rotate on itself during its lateral displacement through an angle corresponding to the desired change in position.
9. Installation according to claim 8, characterized in that the lateral displacement of the comb element (8) is ensured by a rod-crank system (7).
10. Installation according to claim 8, characterized in that the displacement of the comb element (8) in height is ensured on the one hand, as far as the lowering is concerned, by the release of a caster (18) fast with the comb element (8) out of the retention element formed by a follower (11) controlled by the position sensor element (4-5) and by a bar (19), and on the other hand, as far as the raising is concerned, by a lever (17) fast with the comb element (8) whose pivoting is controlled by the second position sensor element (16).
11. Installation according to claim 8, characterized in that the comb element (8) comprises two fingers, one mobile (10), the other fixed (9), and in that the means adapted to pivot the comb element (8) consists of a compression spring (12) which tends to rotate the mobile finger (10) about the fixed finger (9), of a roller (13) fast with the comb element (8) and which abuts on a ramp (14) which forms with the predetermined direction an angle equal to that corresponding to the desired change in position, whereby, when the comb element (8) moves laterally, the roller (13) follows the direction of the ramp (14) and causes the mobile finger to pivot about the fixed finger (9) through the desired angle.
12. Installation according to claims 7 and 8, characterized in that the transfer means (8) also serves as bearing element.
13. Installation according to claim 4, characterized in that the means for raising the mobile table (1) comprises a counter bearing element (17) cooperating with a second position sensor element (16).
14. Installation according to claim 6, characterized in that the belts for driving the workpiece (23) to the first (26) and to the second (30) station have perpendicular directions.
15. Application of the process according to claim 6, and of the installation according to claim 4, characterized in that the sleeve (23) is supplied from a first station (23) where is has undergone the operations of hemming or cording the sleeve bottoms, then of folding along an axis of symmetry perpendicular to the given direction at the first station, and in that the sleeve is closed at the second stitching station (30) after the sleeve (23) has been transferred, according to the process of the invention, from the first (26) to the second (30) station and positioned so that the line of stitching (28) of the sleeve (23) is in alignment with the sewing maching, in direction and in position.
EP84400692A 1983-05-04 1984-04-09 Method and installation for transferring and positioning workpieces Expired EP0125945B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400692T ATE25061T1 (en) 1983-05-04 1984-04-09 METHOD AND DEVICE FOR TRANSFERRING AND POSITIONING WORKPIECES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8307461A FR2545461B1 (en) 1983-05-04 1983-05-04 TRANSFER AND POSITIONING METHOD AND INSTALLATION FOR PROVIDING A PREDETERMINED DIRECTION AND POSITION TO A ROOM FROM A POSITION WHERE IT HAS A DIFFERENT DIRECTION AND POSITION
FR8307461 1983-05-04

Publications (2)

Publication Number Publication Date
EP0125945A1 EP0125945A1 (en) 1984-11-21
EP0125945B1 true EP0125945B1 (en) 1987-01-21

Family

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Application Number Title Priority Date Filing Date
EP84400692A Expired EP0125945B1 (en) 1983-05-04 1984-04-09 Method and installation for transferring and positioning workpieces

Country Status (6)

Country Link
US (1) US4679785A (en)
EP (1) EP0125945B1 (en)
JP (1) JPS59231616A (en)
AT (1) ATE25061T1 (en)
DE (1) DE3462118D1 (en)
FR (1) FR2545461B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1257775B (en) * 1992-03-24 1996-02-13 Gd Spa CONVEYOR DEVICE FOR SHEET WRAPPING MATERIAL
CN106564737B (en) * 2016-10-12 2020-09-22 武汉慧能机器人科技有限公司 Conveying device

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE701215C (en) * 1939-01-13 1941-01-11 Dr Ernst Melzer Device for automatic, all-round hemming of textile materials
US2940404A (en) * 1956-05-17 1960-06-14 Deering Milliken Res Corp Pillow case manufacturing apparatus
DE1485279B1 (en) * 1965-10-25 1969-10-02 Pfaff Ag G M Device for removing the sewn material from sewing machines
US3712254A (en) * 1970-04-28 1973-01-23 B Beamish Apparatus and method for edge stitching/binding workpieces
US3772948A (en) * 1970-06-05 1973-11-20 Burton Noonan Method and apparatus for forming cloth lengths with folded hems
US3640235A (en) * 1970-06-05 1972-02-08 Burton & Noonan Method and apparatus for cutting and hemming cloth lengths
DE2145816A1 (en) * 1971-09-14 1973-03-15 Ivanhoe Research Corp Automated garment prodn line - with universal worktables which carry stacks between stations
DE2451989A1 (en) * 1974-11-02 1976-05-06 Beisler Gmbh Pocket edge strip sewing equipment - with section of auxiliary table which is raised or lowered to bring strip under conveyor belts
FR2456691A1 (en) * 1979-05-18 1980-12-12 Anvar PROCESS FOR POSITIONING A FLEXIBLE SHEET PIECE ON A SUPPORT SURFACE AND HANDLING INSTALLATION USING THE SAME
FR2457827A1 (en) * 1979-05-29 1980-12-26 Anvar HANDLING METHOD AND INSTALLATION FOR BRINGING A PIECE TO AN ARRIVAL STATION IN A PREDETERMINED POSITION
FR2498211A1 (en) * 1981-01-16 1982-07-23 Inst Textile De France METHOD AND DEVICE FOR PROCESSING RECTANGULAR TISSUE PIECES
JPS57142289A (en) * 1981-02-26 1982-09-02 Aisin Seiki Controller for position of cloth of sewing machine

Also Published As

Publication number Publication date
FR2545461A1 (en) 1984-11-09
JPS59231616A (en) 1984-12-26
DE3462118D1 (en) 1987-02-26
ATE25061T1 (en) 1987-02-15
FR2545461B1 (en) 1985-12-06
US4679785A (en) 1987-07-14
EP0125945A1 (en) 1984-11-21

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