WO1992008811A1 - Leather hide cutting method - Google Patents

Leather hide cutting method Download PDF

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Publication number
WO1992008811A1
WO1992008811A1 PCT/FR1991/000873 FR9100873W WO9208811A1 WO 1992008811 A1 WO1992008811 A1 WO 1992008811A1 FR 9100873 W FR9100873 W FR 9100873W WO 9208811 A1 WO9208811 A1 WO 9208811A1
Authority
WO
WIPO (PCT)
Prior art keywords
skin
cutting
support surface
support
semi
Prior art date
Application number
PCT/FR1991/000873
Other languages
French (fr)
Inventor
Jean Etcheparre
Bernard Etcheparre
Original Assignee
Lectra Systemes S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lectra Systemes S.A. filed Critical Lectra Systemes S.A.
Priority to JP4500410A priority Critical patent/JPH06502664A/en
Publication of WO1992008811A1 publication Critical patent/WO1992008811A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B5/00—Clicking, perforating, or cutting leather

Definitions

  • the present invention relates to an automatic cutting method for leather skins comprising in particular a step of transferring and optionally storing said skins, as well as a device for transferring and storing skins.
  • the automatic cutting process generally includes a step consisting in identifying skin defects using a chalk line, spreading it over one of the mobile working trays of an automatic cutting machine with numerical control, then to realize by digitization a computer image of the shape of the skin taking into account the identified defects.
  • the skin must no longer be moved until it has been cut, this is the reason for which the devices implementing the process above use several mobile platforms moving from station to station.
  • the next step is to place the shapes to be cut in the scanned image, this operation is carried out using graphic placement software. Then, the plate supporting the skin is brought into the cutting zone of La mac ⁇ -ne. Once the cut has been made and the pieces have been unloaded from the tray, it can return to the scanning area where the operator will spread a new skin on it.
  • these devices are equipped with at least two mobile trays. Indeed, this design must make it possible to carry out the operations of removal, scanning and placement relating to this skin, in masked time with the cutting operation.
  • the mobile trays must have very large dimensions (approximately 3 mx 3 m) because each of them must allow the spread of an entire skin.
  • the size of these plates means that the automatic machine necessarily has a very large footprint, which leads to installation difficulties.
  • the invention aims to solve these difficulties or at least to mitigate them.
  • an automatic cutting process for leather skins comprising the successive operations of digital recording of skin defects and contours, identification of the skin, transfer and placement of said skin on a cutting table, characterized in that the transfer operation is carried out by detachably fixing said skin on a uniform semi-rigid support whose surface is determined according to the size of the skins and which is susceptible to be wound with it without causing relative displacement of one relative to the other so that one can take off the cut pieces without damaging the skin and without leaving a trace.
  • the rolled supports are stored following the transfer for subsequent cutting.
  • Another object of the invention is a device for transferring and storing a skin comprising means for supporting and immobilizing said skin, the defects of which have been recorded digitally prior to a cutting operation.
  • said support means and immobilization comprise a uniform semi-rigid support surface in self-adhesive contact with the skin at all points of their respective facing faces, in order to allow immobilization by detachable fixing of the skin on said surface and its winding with the skin without causing a relative displacement of one with respect to the other, and positioning members allowing the location of the position of the support surface on the cutting table.
  • the device further comprises means for identifying said skin consisting in particular of information presentation elements such as labels fixed to the support surface.
  • the invention makes it possible to freeze the shape of the skin without using the system of mobile trays and to make it possible to transfer the leather skins between all the stages of the cutting process which follow the scanning operation of the shape of the skin.
  • FIG. 1 is an overall view of a leather skin on its support and immobilization means
  • FIG. 2 is a diagram of the process for cutting leather skins according to the invention.
  • FIG. 1 represents the support and immobilization means comprising a uniform semi-rigid support 1 on which the leather skin 3 is immobilized, the defects of which are identified by the lines 2 and 2 '.
  • the immobilization is carried out by detachable or self-adhesive contact between said support and the skin at all points on their respective facing faces.
  • the semi-rigid material constituting the support surface 1 is chosen so that it can be rolled up with the skin and then resume a flat shape.
  • the information such as the surface, the color, the quality, the date of the scanning of the skin 3 fixed on the support 1 are indicated on means of identification such as the label 5.
  • the device shown also comprises positioning members such as a marker allowing the location of the position of the support surface 1 relative to the cutting table.
  • the measurement of the positioning of the skin 3 (contours and defects) relative to the support 1 is carried out by the digitizing machine 7 shown in FIG. 2. This measurement can be made with respect to the edges of the support surface 1, which serve orthogonal landmark with one of the angles of the surface as origin.
  • the angle is made for example by means of two strips forming between them an angle of 90.
  • This solution has the advantage of not limiting the format of the support surface which can thus vary depending on the size of the skins.
  • This embodiment allows on the one hand to find directly and without new recording the exact position of the parts to be cut and on the other hand to initialize the cutting machine relative to the support surface.
  • said positioning members consist of a self-adhesive pad 4, applied to the support, the position of which was recorded during scanning. The operator then comes to initialize the cutting machine by aligning this mark with a viewfinder attached to the cutting head.
  • the operator takes a leather skin from the storage easel 6, then fixes this skin on the semi-rigid support surface 1 using a coating consisting essentially of a fugitive glue by spreading it so as to make it as flat as possible.
  • This "fugitive" glue is chosen so that the cut pieces can be peeled off from the support surface without damaging the skin and without leaving a trace.
  • He then starts the digitization system 7 which takes a computer image of the skin contour taking into account the traces identifying the faults 2, 2 '.
  • the leather skin 3 still detachably attached to its semi-rigid support 1, is then rolled up so that it can be transported and then stored in a waiting station 8, before being cut up.
  • the self-adhesive contact between the support surface and the skin allows the immobilization of the latter and the winding of the assembly without any relative displacement of one with respect to the other appearing.
  • the information relating to the skin 3 will have been marked on the support 1, for example using information presentation elements such as self-adhesive labels 5 automatically printed and then glued near the corner of the surface. of support that the operator must position in the angle iron fixed on the cutting table.
  • information presentation elements such as self-adhesive labels 5 automatically printed and then glued near the corner of the surface. of support that the operator must position in the angle iron fixed on the cutting table.
  • the computer file containing the digital image of the skin outline is then saved, on a floppy disk for example, while waiting to be retrieved by a graphic computer placement station 9. A working operator on this station will then place the shapes at cut out from the digital image of the skin contour that has been transmitted to Him.
  • the computer file containing the cutting information resulting from the placement made previously is saved in turn, then transmitted to the automatic machine 10 performing the cutting.
  • Another advantage is that the quality of the scanning can be considerably improved if the color of the semi-rigid support is adjusted so as to obtain the best possible contrast with the color of the skin.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

A method for automatically cutting leather hides (3), wherein a hide's flaws (2, 2') and contours are digitally recorded, and the hide is identified and transferred to a cutting table by means of a semi-rigid support (1) to which the hide is removably fixed and which can be rolled up together with said hide without causing any relative movement therebetween and in such a way that cutouts can be removed without damaging the hide or leaving any marks.

Description

Procédé pour découper des peaux de cuir Method for cutting leather skins
La présente invention concerne un procédé de découpe automatique des peaux de cuir comprenant notamment une étape de transfert et éventuelLement de stockage desdites peaux, ainsi qu'un dispositif de transfert et de stockage des peaux.The present invention relates to an automatic cutting method for leather skins comprising in particular a step of transferring and optionally storing said skins, as well as a device for transferring and storing skins.
Actuellement, la majorité des industriels utilisent un procédé manuel de découpe des peaux de cuir qui consiste à repérer Les défauts de la peau à l'aide d'un tracé à la craie, à étaler cette peau sur un plateau, à positionner des emporte-pièces sur la peau en tenant compte de ses défauts et de son étaLement, puis à amener le plateau sous une presse venant appuyer sur les emporte- pièces et découper ainsi la peau. Ce procédé permet d'obtenir une grande qualité de découpe, mais a en revanche une très faible productivité. Dans le but d'améliorer notablement la productivité, le procédé automatique de découpe comprend généralement une étape consistant à repérer les défauts de La peau à l'aide d'un tracé à La craie, à l'étaler sur un des plateaux mobiles de travail d'une machine de coupe automatique à commande numérique, puis à réaliser par numérisation une image informatique de La forme de La peau en tenant compte des défauts repérés. Dès cet instant, pour pouvoir conserver La forme qu'elle avait lors de La numérisation, La peau ne doit plus être déplacée jusqu'à ce qu'elle ait été découpée, c'est la raison pour Laquelle Les dispositifs mettant en oeuvre Le procédé ci-dessus utilisent plusieurs plateaux mobiles se déplaçant de poste en poste. L'étape suivante consiste à placer les formes à découper dans L'image numérisée, cette opération s'effectue à l'aide d'un logiciel de placement graphique. Ensuite, le plateau supportant la peau est amené dans La zone de coupe de La macμ-ne. Une fois que la découpe a été effectuée et que les pièces on ëté déchargées du plateau, celui-ci peut retourner dans la zone de numérisation où L'opérateur y étalera une nouvelle peau.Currently, the majority of industrialists use a manual process for cutting leather skins which consists of identifying skin defects using a chalk line, spreading this skin on a tray, positioning cookie cutters pieces on the skin, taking into account its defects and its spreading, then bringing the tray under a press which presses on the cookie cutters and thus cuts the skin. This process makes it possible to obtain a high quality of cut, but on the other hand has a very low productivity. In order to significantly improve productivity, the automatic cutting process generally includes a step consisting in identifying skin defects using a chalk line, spreading it over one of the mobile working trays of an automatic cutting machine with numerical control, then to realize by digitization a computer image of the shape of the skin taking into account the identified defects. From this moment, to be able to keep the shape it had during the digitization, the skin must no longer be moved until it has been cut, this is the reason for which the devices implementing the process above use several mobile platforms moving from station to station. The next step is to place the shapes to be cut in the scanned image, this operation is carried out using graphic placement software. Then, the plate supporting the skin is brought into the cutting zone of La mac μ -ne. Once the cut has been made and the pieces have been unloaded from the tray, it can return to the scanning area where the operator will spread a new skin on it.
Dans un souci de productivité, ces dispositifs sont équipés de deux plateaux mobiles au minimum. En effet, cette conception doit permettre d'effectuer les opérations de dépose, de numérisation et de placement ayant trait à cette peau, en temps masqué avec l'opération de découpe. De plus, les plateaux mobiles doivent avoir de très grandes dimensions (environ 3 m x 3 m) car chacun d'entre eux doit permettre d'étaler une peau entière. La dimension de ces plateaux fait que la machine automa¬ tique présente nécessairement un très grand encombrement, ce qui entraîne des difficultés d'implantation. Dans les procédés anté¬ rieurs, il était impossible de séparer les peaux de leur plateau après les avoir numérisées, car elles ont une si grande souplesse que l'on ne peut pas conserver la forme de La peau dont l'image informatique a été réalisée. De plus, lorsque L'on étale une peau sur un plan de travail, il y a toujours des plis qui se créent sur la peau et qui nuisent à la qualité de découpe des formes.For the sake of productivity, these devices are equipped with at least two mobile trays. Indeed, this design must make it possible to carry out the operations of removal, scanning and placement relating to this skin, in masked time with the cutting operation. In addition, the mobile trays must have very large dimensions (approximately 3 mx 3 m) because each of them must allow the spread of an entire skin. The size of these plates means that the automatic machine necessarily has a very large footprint, which leads to installation difficulties. In the prior processes, it was impossible to separate the skins from their tray after having digitized them, because they have such great flexibility that one cannot keep the shape of The skin of which the computer image was produced . In addition, when you spread a skin on a work surface, there are always folds that are created on the skin and that affect the quality of cutting shapes.
L'invention a pour but de résoudre ces difficultés ou du moins de les atténuer.The invention aims to solve these difficulties or at least to mitigate them.
Ce but est atteint conformément à L'invention par un procédé de découpe automatique de peaux de cuir comprenant les opé¬ rations successives d'enregistrement numérique des défauts et contours de la peau, d'identification de La peau, de transfert et de placement de ladite peau sur une table de découpe, caractérisé en ce qu'on effectue l'opération de transfert en fixant de façon détachable Ladite peau sur un support uniforme semi-rigide dont La surface est déterminée en fonction de La dimension des peaux et qui est susceptible d'être enroulé avec elle sans provoquer de déplacement relatif de l'une par rapport à l'autre de telle sorte que l'on puisse décoller les pièces découpées sans détériorer La peau et sans y Laisser de trace.This object is achieved in accordance with the invention by an automatic cutting process for leather skins comprising the successive operations of digital recording of skin defects and contours, identification of the skin, transfer and placement of said skin on a cutting table, characterized in that the transfer operation is carried out by detachably fixing said skin on a uniform semi-rigid support whose surface is determined according to the size of the skins and which is susceptible to be wound with it without causing relative displacement of one relative to the other so that one can take off the cut pieces without damaging the skin and without leaving a trace.
Selon une autre caractéristique de l'invention, on effectue consécutivement au transfert le stockage des supports enroulés en vue d'une découpe ultérieure.According to another characteristic of the invention, the rolled supports are stored following the transfer for subsequent cutting.
Un autre objet de l'invention est un dispositif de trans¬ fert et de stockage d'une peau comprenant des moyens de support et d'immobilisation de ladite peau dont les défauts ont été enregis¬ trés de façon numérique préalablement à une opération de découpe automatique, caractérisé en ce que Lesdits moyens de support et d'immobilisation comprennent une surface de support uniforme semi-rigide en contact auto-adhésif avec la peau en tous points de leurs faces respectives en regard, afin de permettre L'immobilisation par fixation détachable de la peau sur Ladite surface et son enroulement avec la peau sans provoquer un déplacement relatif de l'une par rapport à L'autre, et des organes de positionnement permettant le repérage de La position de la surface de support sur la table de découpe.Another object of the invention is a device for transferring and storing a skin comprising means for supporting and immobilizing said skin, the defects of which have been recorded digitally prior to a cutting operation. automatic, characterized in that said support means and immobilization comprise a uniform semi-rigid support surface in self-adhesive contact with the skin at all points of their respective facing faces, in order to allow immobilization by detachable fixing of the skin on said surface and its winding with the skin without causing a relative displacement of one with respect to the other, and positioning members allowing the location of the position of the support surface on the cutting table.
Selon une autre caractéristique, le dispositif comprend, en outre, des moyens d'identification de Ladite peau constitués notamment d'éléments de présentation d'informations tels que des étiquettes fixées sur la surface de support.According to another characteristic, the device further comprises means for identifying said skin consisting in particular of information presentation elements such as labels fixed to the support surface.
L'invention permet de figer La forme de la peau sans utiliser le système des plateaux mobiles et de rendre possible le transfert des peaux de cuir entre toutes les étapes du procédé de découpe qui suivent l'opération de numérisation de la forme de La peau.The invention makes it possible to freeze the shape of the skin without using the system of mobile trays and to make it possible to transfer the leather skins between all the stages of the cutting process which follow the scanning operation of the shape of the skin.
L'invention sera mieux comprise à la lecture de la description qui va suivre accompagnée des dessins annexés, sur lesquels : la figure 1 est une vue d'ensemble d'une peau de cuir sur son moyen de support et d'immobilisation, la figure 2 est un schéma du procédé de découpe des peaux de cuir selon l'invention. La figure 1 représente les moyens de support et d'immo¬ bilisation comprenant un support uniforme semi-rigide 1 sur lequel est immobilisée la peau de cuir 3 dont les défauts sont repérés par Les tracés 2 et 2'. L'immobilisation est réalisée par contact détachable ou auto-adhésif entre ledit support et la peau en tous points de leurs faces respectives en regard.The invention will be better understood on reading the description which follows, accompanied by the appended drawings, in which: FIG. 1 is an overall view of a leather skin on its support and immobilization means, FIG. 2 is a diagram of the process for cutting leather skins according to the invention. FIG. 1 represents the support and immobilization means comprising a uniform semi-rigid support 1 on which the leather skin 3 is immobilized, the defects of which are identified by the lines 2 and 2 '. The immobilization is carried out by detachable or self-adhesive contact between said support and the skin at all points on their respective facing faces.
Le matériau semi-rigide constituant la surface de support 1 est choisi de façon qu'il puisse être enroulé avec La peau et reprendre ensuite une forme plane.The semi-rigid material constituting the support surface 1 is chosen so that it can be rolled up with the skin and then resume a flat shape.
De plus, sa couleur sera choisie de manière à obtenir le meilleur contraste possible avec la peau qu'il supporte, ceci afin de faciliter la numérisation des contours de la peau.In addition, its color will be chosen so as to obtain the best possible contrast with the skin it supports, this in order facilitate the digitization of skin contours.
Les informations telles que la surface, La couleur, la qualité, la date de la numérisation de la peau 3 fixée sur Le support 1 sont indiquées sur des moyens d'identification tels que l'étiquette 5.The information such as the surface, the color, the quality, the date of the scanning of the skin 3 fixed on the support 1 are indicated on means of identification such as the label 5.
Le dispositif représenté comporte également des organes de positionnement tels qu'un le repère permettant le repérage de la position de la surface de support 1 par rapport à la table de découpe. Le relevé du positionnement de la peau 3 (contours et défauts) par rapport au support 1 est effectué par la machine de numérisation 7 représentée sur la figure 2. Ce relevé peut être effectué par rapport aux bords de la surface de support 1, qui servent de repère orthogonal avec comme origine un des angles de la surface. On effectue ensuite un placement graphique des formes à découper sur L'image numérique de La peau en tenant compte des défauts et contours. On utilise ensuite une cornière d'angle fixée sur la tabLe de découpe destinée à recevoir un des coins de La surface de support semi-rigide pour que Ladite surface supportant la peau soit placée sur la table de découpe dans La même position que celle qu'elle occupait lors de L'enregistre¬ ment numérique des défauts et contours. La cornière est réalisée par exemple au moyen de deux réglettes formant entre elles un angle de 90 . Cette solution a l'avantage de ne pas limiter le format de la surface de support qui peut ainsi varier en fonction de La dimension des peaux.The device shown also comprises positioning members such as a marker allowing the location of the position of the support surface 1 relative to the cutting table. The measurement of the positioning of the skin 3 (contours and defects) relative to the support 1 is carried out by the digitizing machine 7 shown in FIG. 2. This measurement can be made with respect to the edges of the support surface 1, which serve orthogonal landmark with one of the angles of the surface as origin. We then carry out a graphic placement of the shapes to be cut on the digital image of the skin, taking into account the defects and contours. We then use a corner angle fixed on the cutting table intended to receive one of the corners of the semi-rigid support surface so that said surface supporting the skin is placed on the cutting table in the same position as that during digital recording it occupied defects and contours. The angle is made for example by means of two strips forming between them an angle of 90. This solution has the advantage of not limiting the format of the support surface which can thus vary depending on the size of the skins.
Ce mode de réalisation permet d'une part de retrouver directement et sans nouvel enregistrement la position exacte des pièces à découper et d'autre part d'initialiser La machine de coupe par rapport à La surface de support.This embodiment allows on the one hand to find directly and without new recording the exact position of the parts to be cut and on the other hand to initialize the cutting machine relative to the support surface.
Selon un autre mode de réalisation, lesdits organes de positionnement sont constitués d'une pastille autocollante 4, appliquée sur Le support, dont la position a été enregistrée lors de la numérisation. L'opérateur vient ensuite initialiser La machine de coupe en alignant ce repère avec un viseur fixé sur la tête de coupe.According to another embodiment, said positioning members consist of a self-adhesive pad 4, applied to the support, the position of which was recorded during scanning. The operator then comes to initialize the cutting machine by aligning this mark with a viewfinder attached to the cutting head.
Selon le procédé de découpe de ladite invention tel qu'illustré sur la figure 2, l'opérateur prélève une peau de cuir sur le chevalet de stockage 6, il fixe ensuite cette peau sur la surface de support semi-rigide 1 à l'aide d'un revêtement constitué essentiellement d'une colle fugitive en l'étalant de façon à la rendre la plus plane possible. Cette colle "fugitive" est choisie de telle sorte que l'on puisse décoller les pièces découpées de la surface de support sans détériorer la peau et sans y laisser de trace. Il met ensuite en route le système de numérisation 7 qui prend une image informatique du contour de la peau en tenant compte des tracés repérant les défauts 2, 2'.According to the cutting method of said invention as illustrated in FIG. 2, the operator takes a leather skin from the storage easel 6, then fixes this skin on the semi-rigid support surface 1 using a coating consisting essentially of a fugitive glue by spreading it so as to make it as flat as possible. This "fugitive" glue is chosen so that the cut pieces can be peeled off from the support surface without damaging the skin and without leaving a trace. He then starts the digitization system 7 which takes a computer image of the skin contour taking into account the traces identifying the faults 2, 2 '.
La peau de cuir 3, toujours fixée de manière détachable sur son support semi-rigide 1, est ensuite enroulée pour pouvoir être transportée puis stockée dans un poste d'attente 8, avant d'être découpée.The leather skin 3, still detachably attached to its semi-rigid support 1, is then rolled up so that it can be transported and then stored in a waiting station 8, before being cut up.
Le contact auto-adhésif entre la surface de support et La peau permet L'immobilisation de cette dernière et l'enroulement de l'ensemble sans qu'il n'apparaisse un quelconque déplacement relatif de l'une par rapport à L'autre.The self-adhesive contact between the support surface and the skin allows the immobilization of the latter and the winding of the assembly without any relative displacement of one with respect to the other appearing.
Préalablement, les informations concernant la peau 3 auront été marquées sur le support 1 par exemple à l'aide d'élé¬ ments de présentation d'informations tels que Les étiquettes auto¬ collantes 5 imprimées automatiquement puis collées à proximité du coin de la surface de support que L'opérateur doit positionner dans la cornière fixée sur La table de découpe.Beforehand, the information relating to the skin 3 will have been marked on the support 1, for example using information presentation elements such as self-adhesive labels 5 automatically printed and then glued near the corner of the surface. of support that the operator must position in the angle iron fixed on the cutting table.
Le fichier informatique contenant L'image numérique du contour de La peau est ensuite sauvegardé, sur disquette par exemple, en attendant d'être récupéré par une station graphique de placement informatique 9. Un opérateur travailLant sur cette station effectuera ensuite le placement des formes à découper sur L'image numérique du contour de la peau qui Lui aura été trans¬ mise.The computer file containing the digital image of the skin outline is then saved, on a floppy disk for example, while waiting to be retrieved by a graphic computer placement station 9. A working operator on this station will then place the shapes at cut out from the digital image of the skin contour that has been transmitted to Him.
Le fichier informatique contenant Les informations de découpe résultant du placement effectué précédemment est sauvegardé à son tour, puis transmis à la machine automatique 10 réalisant La découpe.The computer file containing the cutting information resulting from the placement made previously is saved in turn, then transmitted to the automatic machine 10 performing the cutting.
En vue de découper l'ensemble peau/support considéré 11, L'opérateur de la machine automatique de découpe doit d'abord récu- pérer le rouleau 11 dans le stock au poste d'attente 8, puis le positionner sur le plan de coupe constitué d'un plateau fixe à l'aide des organes de positionnement. Il charge ensuite Le fichier de découpe issu de La station de placement 9 dans la commande numérique de La machine de coupe 10. Ainsi, toutes les étapes du cycle de production étant indépendantes, le procédé de découpe décrit ci-dessus a une plus grande souplesse d'utilisation, tout en ayant l'avantage d'utiliser plusieurs éléments de faible encombrement, ce qui en facilite l'implantation. De plus, la peau étant bien étalée et fixée sur son support, La qualité et la précision de la découpe se trouvent améliorées.In order to cut the skin / support assembly considered 11, The operator of the automatic cutting machine must first collect the roll 11 from the stock at the waiting station 8, then position it on the cutting plane consisting of a fixed plate using positioning devices. It then loads the cutting file from the placement station 9 into the digital control of the cutting machine 10. Thus, all the stages of the production cycle being independent, the cutting process described above has greater flexibility of use, while having the advantage of using several elements of small size, which facilitates the establishment. In addition, the skin being well spread and fixed on its support, the quality and precision of the cut are improved.
De même, le travail de dépose des grandes peaux sur Le plan de coupe se trouve grandement facilité, car elles sont collées sur Le support semi-rigide et L'opérateur n'a donc plus qu'à dérouler l'ensemble support/peau et ensuite à le faire glisser pour Le mettre en position.Similarly, the work of removing large skins on the cutting plane is greatly facilitated, because they are glued to the semi-rigid support and the operator therefore only has to unroll the support / skin assembly and then drag it to position it.
Un autre avantage est que la qualité de la numérisation peut être considérablement améliorée si l'on adapte la couleur du support semi-rigide de façon à obtenir le meilleur contraste possible avec la couleur de la peau. Another advantage is that the quality of the scanning can be considerably improved if the color of the semi-rigid support is adjusted so as to obtain the best possible contrast with the color of the skin.

Claims

REVENDICATIONS
1. Procédé de découpe automatique de peaux de cuir (3) comprenant Les opérations successives, d'enregistrement numérique des défauts (2, 2') et contours de La peau, d'identification de La peau, de transfert et de placement de ladite peau sur une table de découpe, caractérisé en ce qu'on effectue l'opération de transfert en fixant de façon détachable ladite peau sur un support uniforme semi-rigide (1) dont la surface est déterminée en fonction de La dimension des peaux et qui est susceptible d'être enroulé avec elle sans provoquer de déplacement relatif de l'un par rapport à l'autre de telle sorte que l'on puisse décoller les pièces découpées sans détériorer La peau et sans y laisser de trace.1. Process for automatic cutting of leather skins (3) comprising successive operations, digital recording of defects (2, 2 ') and contours of the skin, identification of the skin, transfer and placement of said skin skin on a cutting table, characterized in that the transfer operation is carried out by detachably fixing said skin on a uniform semi-rigid support (1) whose surface is determined according to the size of the skins and which is capable of being wound up with it without causing relative displacement of one with respect to the other so that the cut pieces can be peeled off without damaging the skin and without leaving a trace there.
2. Procédé selon la revendication 1, caractérisé en ce qu'on effectue consécutivement au transfert le stockage des supports enroulés en vue d'une découpe ultérieure.2. Method according to claim 1, characterized in that the storage of the wound supports is carried out consecutively to the transfer with a view to subsequent cutting.
3. Procédé selon les revendications 1 ou 2, caractérisé n ce qu'on effectue l'opération d'identification en associant audit support un élément de présentation d'informations (5). 3. Method according to claims 1 or 2, characterized n that the identification operation is carried out by associating to said support an information presentation element (5).
4. Dispositif de transfert et de stockage d'une peau (3) comprenant des moyens de support et d'immobilisation de ladite peau dont Les défauts (2, 2') et Les contours ont été enregistrés de façon numérique préalablement à une opération de découpe automatique, caractérisé en ce que lesdits moyens de support et d'immobilisation comprennent :4. Device for transferring and storing a skin (3) comprising means for supporting and immobilizing said skin, the defects (2, 2 ') and the contours of which have been recorded digitally prior to an operation of automatic cutting, characterized in that said support and immobilization means comprise:
- une surface de support uniforme semi-rigide (1) en contact auto-adhésif avec La peau (3) en tous points de leurs faces respectives en regard, afin de permettre L'immobilisation par fixation détachable de la peau sur ladite surface et son enroulement avec La peau sans provoquer un déplacement relatif de l'une par rapport à l'autre ; et,- a semi-rigid uniform support surface (1) in self-adhesive contact with the skin (3) at all points of their respective facing faces, in order to allow immobilization by detachable fixing of the skin on said surface and its winding with the skin without causing a relative displacement of one with respect to the other; and,
- des organes de positionnement permettant le repérage de La position de La surface de support sur la table de découpe.- positioning members allowing the location of the position of the support surface on the cutting table.
5. Dispositif selon la revendication 4, caractérisé en ce que La surface de support semi-rigide (1) est réalisée en un matériau lui permettant d'être enroulée et de reprendre ensuite une forme plane et dont La couleur donne le meilleur contraste possible avec la peau.5. Device according to claim 4, characterized in that the semi-rigid support surface (1) is produced in a material allowing it to be rolled up and then resume a flat shape and whose color gives the best possible contrast with the skin.
6. Dispositif selon l'une des revendications 4 ou 5, caractérisé en ce que Le contact auto-adhésif entre la surface de support (1) et la peau (3) est réalisé au moyen d'un revêtement constitué essentiellement d'une colle "fugitive" permettant de décoller les pièces découpées sans laisser de trace sur La peau.6. Device according to one of claims 4 or 5, characterized in that The self-adhesive contact between the support surface (1) and the skin (3) is achieved by means of a coating consisting essentially of an adhesive "fugitive" allowing to take off the cut pieces without leaving a trace on the skin.
7. Dispositif selon l'une des revendications 4 à 6, caractérisé en ce qu'il comprend en outre des moyens d'identifica¬ tion (5) de ladite peau constitués notamment d'éléments de présen¬ tation d'informations tels que des étiquettes fixées sur la surface de support.7. Device according to one of claims 4 to 6, characterized in that it further comprises means of identification (5) of said skin consisting in particular of information presentation elements such as labels attached to the support surface.
8. Dispositif selon la revendication 4, caractérisé en ce que lesdits organes de positionnement sont constitués d'une pastille autocollante (4), appliquée sur le support, dont la position a été enregistrée lors de La numérisation ; l'opérateur vient ensuite initialiser La machine de coupe en alignant ce repère avec un viseur fixé sur la tête de coupe. 8. Device according to claim 4, characterized in that said positioning members consist of an adhesive patch (4), applied to the support, the position of which was recorded during digitization; the operator then initializes the cutting machine by aligning this mark with a viewfinder attached to the cutting head.
9. Dispositif selon la revendication 4, caractérisé en ce que lesdits organes de positionnement sont constitués par une cornière d'angle fixée sur la table de découpe destinée à recevoir un des coins de la surface de support semi-rigide repéré par l'étiquette (5) pour que ladite surface supportant La peau soit placée sur la table dans La même position que celle qu'elle occupait lors de l'enregistrement numérique des défauts et contours. 9. Device according to claim 4, characterized in that said positioning members are constituted by a corner angle fixed on the cutting table intended to receive one of the corners of the semi-rigid support surface identified by the label ( 5) so that said surface supporting the skin is placed on the table in the same position as that which it occupied during the digital recording of the defects and contours.
PCT/FR1991/000873 1990-11-09 1991-11-08 Leather hide cutting method WO1992008811A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4500410A JPH06502664A (en) 1990-11-09 1991-11-08 How to cut leather

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9013933A FR2669039A1 (en) 1990-11-09 1990-11-09 PROCESS FOR CUTTING LEATHER SKINS.
FR90/13933 1990-11-09

Publications (1)

Publication Number Publication Date
WO1992008811A1 true WO1992008811A1 (en) 1992-05-29

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Application Number Title Priority Date Filing Date
PCT/FR1991/000873 WO1992008811A1 (en) 1990-11-09 1991-11-08 Leather hide cutting method

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EP (1) EP0556270A1 (en)
JP (1) JPH06502664A (en)
CA (1) CA2095934A1 (en)
FR (1) FR2669039A1 (en)
WO (1) WO1992008811A1 (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO1995029046A1 (en) * 1994-04-27 1995-11-02 Lectra Systemes Method for digitising and cutting remnants with non-repetitive shapes
AT1377U1 (en) * 1995-07-28 1997-04-25 Gfm Gmbh DEVICE FOR CUTTING OUT CUTTINGS FROM FLAT, IRREGULAR WORKPIECES, IN PARTICULAR LEATHER PIECES
US11172922B2 (en) 2004-09-20 2021-11-16 Intuitive Surgical Operations, Inc. Apparatus and method for minimally invasive suturing
US11253250B2 (en) 2017-02-26 2022-02-22 Intuitive Surgical Operations, Inc. Apparatus and method for minimally invasive suturing

Families Citing this family (1)

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CN107557503A (en) * 2017-10-19 2018-01-09 响水金瑞皮件有限公司 A kind of leather production high-efficient cutting

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DE3405480A1 (en) * 1984-02-16 1985-10-24 Ostbayerische Lederfabrik Josef Ciecierski KG, 8402 Neutraubling Method and device for transporting leather
FR2565884A1 (en) * 1984-06-15 1985-12-20 Andre Chaussures Sa Method and device for placing, especially a hide, on a surface for automated cutting out.
GB2188170A (en) * 1986-03-20 1987-09-23 Gerber Garment Technology Inc Method and apparatus for cutting parts from pieces of irregularly shaped and sized sheet material
FR2603513A1 (en) * 1986-09-04 1988-03-11 Automatique Indle Machine for cutting products in sheet form, particularly hides and skins
DE4111304A1 (en) * 1990-04-09 1991-10-10 Gerber Garment Technology Inc METHOD AND DEVICES FOR CUTTING PARTS FROM WORKPIECES FROM FLAT MATERIAL

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DE3405480A1 (en) * 1984-02-16 1985-10-24 Ostbayerische Lederfabrik Josef Ciecierski KG, 8402 Neutraubling Method and device for transporting leather
FR2565884A1 (en) * 1984-06-15 1985-12-20 Andre Chaussures Sa Method and device for placing, especially a hide, on a surface for automated cutting out.
GB2188170A (en) * 1986-03-20 1987-09-23 Gerber Garment Technology Inc Method and apparatus for cutting parts from pieces of irregularly shaped and sized sheet material
FR2603513A1 (en) * 1986-09-04 1988-03-11 Automatique Indle Machine for cutting products in sheet form, particularly hides and skins
DE4111304A1 (en) * 1990-04-09 1991-10-10 Gerber Garment Technology Inc METHOD AND DEVICES FOR CUTTING PARTS FROM WORKPIECES FROM FLAT MATERIAL

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995029046A1 (en) * 1994-04-27 1995-11-02 Lectra Systemes Method for digitising and cutting remnants with non-repetitive shapes
FR2719403A1 (en) * 1994-04-27 1995-11-03 Lectra Systemes Sa Method of scanning and cutting coupons having non-repetitive shapes.
US5838569A (en) * 1994-04-27 1998-11-17 Letra Systemes Method of digitizing and cutting up remnants of non-repetitive shapes
AT1377U1 (en) * 1995-07-28 1997-04-25 Gfm Gmbh DEVICE FOR CUTTING OUT CUTTINGS FROM FLAT, IRREGULAR WORKPIECES, IN PARTICULAR LEATHER PIECES
US11172922B2 (en) 2004-09-20 2021-11-16 Intuitive Surgical Operations, Inc. Apparatus and method for minimally invasive suturing
US11253249B2 (en) 2004-09-20 2022-02-22 Intuitive Surgical Operations, Inc. Apparatus and method for minimally invasive suturing
US11253250B2 (en) 2017-02-26 2022-02-22 Intuitive Surgical Operations, Inc. Apparatus and method for minimally invasive suturing

Also Published As

Publication number Publication date
FR2669039A1 (en) 1992-05-15
CA2095934A1 (en) 1992-05-10
JPH06502664A (en) 1994-03-24
EP0556270A1 (en) 1993-08-25

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