JPH06502664A - How to cut leather - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a method for automatically cutting leather, which method comprises, inter alia, moving the leather; The present invention also provides an apparatus for moving and storing hides. .

Currently, most of the industry uses manual leather cutting methods, which are characterized by chalk marks. Check for scratches on the leather, then spread the leather on the work surface, taking into consideration the scratches and spread. Place the punch on top of the skin and press down on the punch. Move the bench and cut out the skin.

Such a method can either yield high-quality cuts or, unfortunately, be unproductive. Extremely low.

To further increase productivity, automatic cutting methods generally cut the leather with chalk marks. Check that the skin is clean and spread it out on one of the digitally controlled automatic cutting machine's mobile work tables. digitize the computer image of the skin shape, taking into account the flaws identified. Ru. From this point until cutting, the hide is preserved so that the shape of the hide is preserved during digitization. This means that the equipment on which the above method has been implemented is This is why we use multiple workstations that move from workstation to workstation. Next In the step, the mold to be cut out is made into a digital image, but this step It is done by software. The hide is then transferred to the workbench supporting it or to the cutting zone of the machine. will be moved. Once the cutting is done and the section is removed from the workbench, the workbench is You can then return to the digitization zone where an operator will spread a new skin over it. Ru.

For productivity, such equipment is equipped with at least two mobile workbenches. Up The design combines the spreading, digitizing and placement work related to the leather with the mapping work for the cutting work. You must be able to do it during school hours. In addition, the mobile workbench A very large item (approximately 3 meters (m) x 3 m) that can be spread over the entire skin. Must be. The size of such a workbench is such that automatic machines are necessarily very It means occupying a large space and poses installation difficulties. In the traditional method , the skin is flexible to the extent that it is impossible to retain the shape obtained from the computer image. Because of this, the skin cannot be removed from the workbench after digitization. Furthermore, place the skin on the workbench. If you spread it out, there will always be creases in the skin, which will reduce the quality of the cutouts.

The object of the invention is to overcome or at least reduce the above-mentioned difficulties.

According to the invention, the purpose is to digitally record the flaws and contours of the skin and to recognize the skin. , an automatic leather cutting process that consists of a continuous operation of moving the leather to a cutting workbench and placing it there. The method of cutting, determined as a function of moving work, area, or size of the skin, and on a semi-rigid uniform support suitable for being rolled together with the skin without relative displacement; It is possible to remove the cuttings from the support without damaging the skin or leaving any marks. characterized in that it is carried out by removably fixing the skin, so that This is achieved by the following method.

According to another characteristic of the invention, after the transfer, the rolled support is Stored.

The invention also provides a device for moving and storing hides, which is used prior to automatic cutting operations. and a supporting and fixing means for supporting and fixing the skin on which the flaw is digitally recorded. said supporting and fixing means is in adhesive contact with the skin at all points between opposing surfaces; The skin has a semi-rigid uniform support surface that allows the skin to fixed by being removably attached to a surface and connected to said surface or skin; can also be wrapped around and allows to check the position of the support surface on the cutting table It is characterized by comprising a positioning member that

According to other features, it may consist in particular of an information display element, such as a label, fixed to the supporting surface. The method further includes means for identifying the skin that has been removed.

This invention "freezes" the shape of the skin without using a system for moving the workbench. All the steps in the cutting method after the work to make it possible to digitize the shape of the leather Allows you to move hides between.

The present invention will be better understood by reading the following description and the accompanying drawings, in which: Figure 1 is an overall view of the leather on the support and fixing means, and Figure 2 is the leather cutting method of the present invention. This is a schematic diagram.

Figure 1 shows a supporting and fixing means consisting of a semi-rigid uniform support 1, on which a leather 3 is placed. Fixed and skin flaws marked 2 and 2° are shown. Fixation is done using a support and a skin. Achieved by separable or adhesive contact at all points between opposing surfaces. It will be done.

The semi-rigid material constituting the surface of the support 1 returns to a flat shape after being rolled up with the skin. The one that will be selected will be the one that

Furthermore, its color matches the supporting skin to facilitate digitization of skin contours. Choose a color that provides the desired contrast.

The area, color, quality and data on which the digitization of the skin 3 fixed on the support l was based Information such as data is written on a display means such as a label 5.

The device shown is for checking the position of the support surface 1 relative to the cutting table. It also includes positioning members such as reference markers.

The positioning of the skin 3 (contours and scratches) with respect to the support l can be determined using the digital guide shown in FIG. The judgment is made by the measuring device 7. Positioning can be determined relative to the edge of the support surface l. This becomes an orthogonal reference frame with the origin at one of the corners of the surface. mold cut out is graphically superimposed on top of the digital image of the skin, taking into account contours and flaws. . Then use the angle brackets fixed to the cutting table to create a semi-rigid support. Take one of the corners of the holding surface, and when the contour and the scratches are digitally recorded. Place the leather support side on the cutting table in the same position as before. The bracket is For example, it can consist of two strips at a 90 degree angle. This solution works on the support surface It has the advantage that the structure of the skin is not limited and can be changed as a function of the skin size.

This embodiment firstly allows for direct determination without newly recording the exact position of the piece to be cut out. Second, the cutting machine can be initialized to the support surface.

In another embodiment, the positioning member is attached to a support and during digitization. It consists of an adhesive profile 4 whose position is recorded.

The operator aligns such markers with target means fixed to the cutting head. Initialize the cutting machine by

According to the cutting method of this invention, as shown in FIG. using a coating consisting essentially of a transient adhesive. the leather is fixed on the semi-rigid support surface l, and the operator makes the skin as flat as possible. Spread it out so that it looks like this. "Transient" adhesive does not damage the skin and leaves no traces , is selected to ensure that the skin trimmings are removed from the support surface.

After that, the operator should digitize without taking into account the mark 2.2' indicating scratches. System 7 is activated to create a computer image of the contour of the skin.

The leather 3 remains removably fixed to the semi-rigid support 1 and is rolled before being cut. It is then sent to the waiting station 8 and stored.

Because of the adhesive contact between the support surface and the skin, no relative displacement between the skin and its support occurs. It is possible to fix the skin and roll the assembly without twisting.

The information about skin 3 can be printed automatically, for example, on the bracket of the cutting table. An adhesive label 5 or the like is attached near the corner of the support surface where the operator is located. The information is pre-marked on the support 1 by means of an information display element.

The computer output containing the digital image of the skin contour is then computerized. For example, a floppy disk before being removed from the graphics station 9. stored on disk. The operator working at said station must The cutout is superimposed on the digital image of the skin outline sent.

Computer files containing cutting information obtained from previous placements are stored sequentially. , and sent to an automatic machine 10 for cutting.

In order to cut the target leather and support aggregate 11, the operator of the automatic cutting machine , First, the roll 11 is collected from the stock at the standby station 8 and placed on the fixed workbench. It must be positioned using a positioning member on the cutting surface formed by Must be. Thereafter, the cutting file from the placement station 9 is transferred to the cutting machine 10. loaded into the digital control means.

In this way, all steps in the production cycle are independent, so the above cutting method is , which has the advantage of ease of installation by using multiple relatively small parts, while at the same time This increases flexibility in use. In addition, properly spread and fixed on the skin or support Because of this, the quality and accuracy of cutting often improves. Similarly, cut a large piece of skin It is also applied to a skin or semi-rigid support, and the operator or the support/skin collection It's extremely easy to do, as you can flatten the combination and then slide it to the designated location to spread it out. be.

Another advantage is that it allows the color of the semi-rigid support to have the best contrast with the skin color. If you choose to do so, you can further improve the quality of your digitalization.

Copy and translation of written amendment) Submission form (+#Ni11841(7)　8　)　May 7, 1993

Claims (9)

[Claims] 1. Digitally record the flaws (2, 2') and contours of the skin, recognize the skin, and cut the skin Automatic cutting method for leather (3), which involves continuous work of moving the leather to a workbench and placing it on the workbench. The area of the moving work is determined as a function of the size of the skin, and the displacement relative to the skin. The skin is placed on a semi-rigid uniform support (1) suitable for being rolled up with the skin without causing This allows the cutout to be removed from the support without damaging the material or leaving any marks. Sea urchin, characterized in that it is carried out by removably fixing the skin. Method. 2. characterized in that after the transfer, the rolled support is stored for later cutting 2. The method according to claim 1. 3. A recognition operation is performed by associating the information display member (5) with the support. The method according to claim 1 or 2, characterized in that: 4. This is a device that moves and stores leather (3), and removes scratches (2, 2) prior to automatic cutting. ') and a supporting and fixing means for supporting and fixing the skin whose outline is digitally recorded. , wherein the supporting and fixing means comprises: Semi-rigid uniform support surface (1) in adhesive contact with the skin (3) at all points between opposing surfaces ), the skin is removably attached to said surface without any relative displacement between the skin and the surface. fixed by gluing, said surface can be rolled with skin, and A positioning member that allows you to check the position of the support surface on the cutting workbench. A device characterized by: 5. A material that allows the semi-rigid support surface (1) to return to a flat shape after being rolled together with the skin. The signature material is made of high quality leather and has a color that provides the best contrast with the leather. The device according to claim 4. 6. Adhesive contact between the support surface (1) and the skin (3) ensures that the support surface (1) and the skin (3) do not leave marks on the skin. A coat consisting essentially of a "transient" adhesive that allows the skin to be removed from the skin. The device according to claim 4 or 5, characterized in that the device is achieved by waving. 7. In particular, the skin is composed of an information display member such as a label fixed to the surface of the support. Any of claims 4 to 6, further comprising means (5) for confirming the The device described in any of the above. 8. the positioning member is constituted by an adhesive profile (4) attached to a support; Its position is recorded during digitization and then the operator cuts said marker. Initialize the cutting machine by aligning it with the target means fixed to the head. 5. The device according to claim 4, characterized in that: 9. The same positioning means occupied when the contours and scratches were recorded accordingly Label (5) is attached so that the skin support side is placed on the workbench so that it is in position. An angle fixed to the cutting table that catches one of the corners of the semi-rigid support surface. 5. The device according to claim 4, characterized in that it is comprised of a metal bracket.