JP2015136765A - Punching die, and cutting work method of work piece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a punching die and a cutting work method of a work piece in which one punching die can be used for the production of multiple products.SOLUTION: A punching die 1 comprises a base 2, an annular punching blade 3, and a cylindrical member 21 for supporting a sheet material which is a processing object. The cylindrical member 21 is attached to an attachment position P at the edge part of a square through hole 22 provided in the base 2. The cylindrical member 21 includes a wooden base part 21a and an elastic member 21b made of an urethan sponge. On the back side surface of the elastic member 21b, a first member of a hook-and-loop fastener is fastened. At the attachment position P of the base 2, a second member of a hook-and-loop fastener is fastened, and thereby the cylindrical member 21 can be attached to or detached from the attachment position P.

Description

  The present invention relates to a punching die for cutting a workpiece used for a synthetic resin tray or the like and a cutting method of the workpiece.

  Synthetic resin trays, paper boxes, cardboard boxes, and the like are manufactured by cutting a sheet material (material to be processed) as a material with a punching die (see, for example, Patent Document 1).

  The punching die is obtained by fixing a strip-shaped Thomson blade (hereinafter referred to as “strip-shaped blade”) bent into a planar shape to be punched to a punching base (base). In the punching die described in Patent Document 1, an inner guide member that supports the workpiece is provided in order to prevent the sheet material from being displaced or deformed during the cutting process. This inner guide member is disposed inside an annular belt-like blade (punching blade) via an inner elastic body. When the sheet material is cut, the sheet material is supported by the inner guide member, the molded sheet punching pedestal descends from above the sheet material, and the molded sheet punching pedestal and the molded sheet punching die are The sheet material is sandwiched therebetween, and the sheet material is cut by the punching blade.

  Further, as a member for supporting the sheet material, not only the inner guide member having a shape matched to the three-dimensional shape of the product as described in Patent Document 1, but also surrounding the through hole provided in the base. There is also a cylindrical member that is erected on the main body and is mainly made of sponge. In the case of this cylindrical member, a negative pressure is applied from the through hole, and the punched product is attracted to the cylindrical member.

JP 2012-236238 A

  However, in the conventional punching die as described above, the support member of the sheet material such as the inner guide member and the cylindrical member is made according to the shape of the product, and the support member is fixed to the base. Therefore, the punching die is dedicated to the product. For this reason, it is necessary to manufacture a punching die for each product, which is costly and time consuming, and the manufacturing burden of the punching die is large.

  This invention is made | formed in view of such a situation, The main objective is to provide the punching die and the cutting method of a workpiece which can solve the said subject.

  In order to solve the above-described problems, a punching die according to an aspect of the present invention includes a base, a belt-like blade attached to the base and bent in a two-dimensional ring shape, and the belt-like blade of the base. And a support member that supports the workpiece, and the support member is configured to be detachable from an attachment position of the base, and the support member extends from the attachment position. And an exchange support member having a height different from that of the support member can be attached to the attachment position.

  In this aspect, the base is formed with a step portion around the attachment position so that the attachment position is lower than the periphery thereof, and the step member can position the support member. It may be.

  Moreover, the said aspect WHEREIN: As for the said base, the said attachment position may be formed as a recessed part.

  Moreover, the said aspect WHEREIN: The said base may have a convex part surrounding the said attachment position.

  Moreover, the said aspect WHEREIN: The said base has the 1st member of a hook_and_loop | surface fastener attached to the said attachment position, and the said support member is a surface which can be attached or detached with the said 1st member on the connection surface to the said base. A second member of the fastener may be attached.

  In the above aspect, the base is attached with a magnet or a magnetic body at the mounting position, and the support member is a magnetic body or magnet that adsorbs the magnet or the magnetic body to a connection surface to the base. May be attached.

  Moreover, the said aspect WHEREIN: The said supporting member may have a rigid member which has a connection surface to the said base, and an elastic member fixed to the said rigid member.

  According to another aspect of the present invention, there is provided a method for cutting a workpiece by using a punching die having a base and a band-shaped blade attached to the base and bent in a two-dimensional ring shape. In the cutting method for cutting, in the case of manufacturing a first product having a first shape with a predetermined bottom depth, the first product is attached to the mounting position inside the strip blade of the base. A first supporting member having a corresponding height is detachably attached, and a workpiece supported by the first supporting member is cut by the strip blade, and the depth of the bottom is different from the first shape. In the case of manufacturing a second product having the second shape, a second support member having a height corresponding to the second product is detachably attached to an attachment position inside the band-shaped blade of the base. The workpiece supported by the second support member is moved by the strip blade. Cutting machining.

  According to the punching die and the workpiece cutting method according to the present invention, one punching die can be used for manufacturing a plurality of products.

FIG. 3 is a perspective view showing a schematic configuration of a punching die according to the first embodiment. FIG. 3 is a front sectional view showing a schematic configuration of the punching die according to the first embodiment. The perspective view which shows an example of the sheet | seat material of a process target. The perspective view which shows the tray which is an example of the product after a process. Front sectional drawing which shows a state when a cylindrical member is removed from the base. The schematic diagram for demonstrating replacement | exchange of a cylindrical member. The schematic diagram which shows the punching process of the sheet material by a punching die. The schematic diagram which shows the punching process of the sheet material by a punching die. The schematic diagram which shows the punching process of the sheet material by a punching die. FIG. 4 is a front sectional view showing a schematic configuration of a punching die according to a second embodiment. FIG. 6 is a front sectional view showing a schematic configuration of a punching die according to a third embodiment. FIG. 6 is a front sectional view showing a schematic configuration of a punching die according to a fourth embodiment.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a perspective view showing a schematic configuration of a punching die according to the present embodiment, and FIG. 2 is a front sectional view thereof. The punching die 1 is configured by arranging a strip-shaped punching blade 3 on one surface of a wooden base 2. Hereinafter, the side of the base 2 on which the punching blade 3 is disposed is referred to as “front side”, and the opposite side is referred to as “back side”.

  The surface of the base 2 is a flat surface, and a groove (not shown) having a shape to be punched by laser processing is formed on the surface, and a strip-shaped punching blade 3 is fitted into the groove, thereby punching die. 1 is configured. The punching blade 3 is fitted into the groove of the base 2 at the end opposite to the cutting edge so that the cutting edge is positioned on the front side.

  FIG. 3A is a perspective view illustrating an example of a sheet material to be processed, and FIG. 3B is a perspective view illustrating a tray that is an example of a product after processing. When the punching die 1 is used, the sheet material 4 to be processed is arranged on the front side of the punching blade 3 of the punching die 1, and the cradle 6 in which the sheet material 4 functions as the punching die 1 and a cutting board (see FIG. 6A). ), And is cut by being pushed out. Each of the concave portions 41 provided in the sheet material 4 corresponds to each rectangular shape of the punching die blade 3 one by one. In other words, the punching dies 1 shown in FIGS. 1 and 2 are arranged in a matrix, and the sheet material 4 is punched into the punching die 1 so that the concave portions 41 of the sheet material 4 are accommodated one by one inside the square of the punching blade 3. The periphery of each recess 41 is simultaneously cut by the punching blade 3. In this way, the tray 5 shown in FIG. 3B is created.

  As shown in FIG. 1, the punching blade 3 according to the present embodiment is arranged so as to form a plurality of quadrangles with rounded corners. Each square is a shape in which the sheet material 4 is punched, that is, the shape of the tray 5 that is a product. Thus, the punching blade 3 is arranged along the shape to be punched, and the shape is not limited to a quadrangle.

  As shown in FIGS. 1 and 2, a cylindrical member 21 having a quadrangular shape in a plan view is erected on the front side surface of the base 2. A square through hole 22 is provided in the central portion of the base 2, and the cylindrical member 21 is attached to an edge portion of the through hole 22 (see FIG. 2). That is, the cylindrical member 21 is attached to the base 2 so as to surround the through hole 22.

  The cylindrical member 21 is for supporting the sheet material 4 when the sheet material 4 is cut. The tubular member 21 has a wooden base portion 21a and an elastic member 21b made of urethane sponge, and the elastic member 21b is fixed to the front side end of the base portion 21a. When the sheet material 4 is cut, the elastic member 21b comes into contact with the sheet material 4 so that the sheet material 4 is supported.

  The cylindrical member 21 is detachably attached to the base 2. FIG. 4 is a front sectional view showing a state when the tubular member 21 is removed from the base 2. The 1st member 23a which is one member (the side which has many hook-like raising) of a hook_and_loop | surface fastener is adhering to the back side end surface of the base part 21a. Further, as described above, the edge portion of the through hole 22 of the base 2 is the attachment position P of the cylindrical member 21, and the other member of the hook-and-loop fastener (having a large number of loop-like raised portions) is provided at this attachment position. The second member 23b which is the side) is fixed. The cylindrical member 21 is attached to the attachment position P of the base 2 by sticking the first member 23a to the second member 23b.

  The cylindrical member 21 is a dedicated product for manufacturing the tray 5. That is, the cylindrical member 21 has a height corresponding to the depth of the tray 5. In the punching die 1 according to the present embodiment, the tubular member 21 is removed, and another tubular shape that is a dedicated product for producing a tray different from the tray 5 (a tray having a depth larger than the tray 5). It can be exchanged for a member (hereinafter referred to as “exchange cylindrical member”). FIG. 5 is a schematic diagram for explaining replacement of the cylindrical member. The replacement tubular member 24 has a planar shape that is the same size and shape as the tubular member 21, and a height that is greater than that of the tubular member 21. The replacement cylindrical member 24 also includes a base portion 24a and an elastic member 24b fixed to the front side surface of the base portion 24a. The first member 23c of the surface fastener is fixed to the back side surface of the base portion 24a. Yes. The replacement cylindrical member 24 is attached to the attachment position P of the base 2 by sticking the first member 23c to the second member 23b.

  The punching die 1 includes a support member 25 attached to the base 2 so as to be in contact with the inner surface of the punching blade 3, and a support member 26 attached to the base 2 so as to be in contact with the outer surface of the punching blade 3. have. In FIG. 1, the support member 26 is omitted. Similarly to the cylindrical member 24, the support members 25, 26 also have wooden base portions 25a, 26a and elastic members 25b, 26b, and elastic members 25b, 26b on the front side surfaces of the base portions 25a, 26a. Is fixed.

  The height of the support member 26 is slightly higher than that of the punching blade 3. More specifically, the front side end surface of the base portion 26a of the support member 26 is located slightly behind the cutting edge of the punching blade 3, and the front side end surface of the elastic member 26b is located slightly front side of the cutting edge of the punching blade 3. doing. That is, the cutting edge of the punching blade 3 is located at an intermediate position in the front and back direction of the elastic member 26b.

  On the other hand, the height of the support member 25 is slightly lower than the punching blade 3. That is, the front side end surface of the elastic member 25 b of the support member 25 is located on the back side of the cutting edge of the punching blade 3.

  Hereinafter, the punching process of the sheet material 4 will be described. 6A to 6C are schematic diagrams illustrating a punching process of the sheet material 4 by the punching die 1. When the punching of the sheet material 4 is performed, the sheet material 4 is positioned on the front side of the punching die 1 as shown in FIG. 6A. In the present embodiment, the punching of the sheet material 4 is performed by the punching die 1 disposed below the sheet material 4. That is, in the present embodiment, the front side direction is upward, and the back side direction is downward. The punching die 1 is not only disposed below the sheet material 4 as in the present embodiment, but may be disposed above the sheet material 4.

  A cradle 6 is disposed further above the sheet material 4. The cradle 6 functions as a cutting board for the punching blade 3 when punching the sheet material 4. The cradle 6 is mainly composed of a base 61, a support member 62, and a blade receiving member 63.

  The wooden base 61 is provided with a square through hole 61a at the center thereof, and a square annular support member 62 is attached to the edge of the through hole 61a. That is, the support member 62 is attached to the base 61 so as to surround the through hole 61a. As shown in FIG. 6A, the through hole 61 a of the base 61 is the same size as the through hole 22 of the base 2, and the planar position thereof is also the same as the planar position of the through hole 22. Therefore, the square at the inner end of the support member 62 has the same size as the square at the inner end of the tubular member 21. In addition, the square at the outer end of the support member 62 is larger than the square at the outer end of the tubular member 21. Thereby, the whole upper end surface (front side end surface) of the cylindrical member 21 overlaps the lower end surface (back side end surface) of the support member 62 in the vertical direction. The support member 62 is made of a urethane sponge.

  The blade receiving member 63 is a member that receives the cutting edge of the punching blade 3, and is arranged in a rounded square ring along the cutting edge of the punching blade 3 on the base 61. The blade receiving member 63 is configured by fixing a plate member 63b made of polypropylene to the lower end of a wooden base portion 63a.

  As the cradle 6 is lowered and the punching die 1 is lifted, the punching die 1 and the cradle 6 are placed in a state where the sheet material 4 is sandwiched between the punching die 1 and the cradle 6. Are relatively close to each other (see FIG. 6A).

  The lower surface of the sheet material 4 is in contact with the upper end surface of the cylindrical member 21 of the punching die 1, the upper end surface of the support member 25, and the upper end surface of the support member 26. Further, the upper surface of the sheet material 4 is in contact with the lower end surface of the support member 62 of the cradle 6 and the lower end surface of the blade receiving member 63. From this state, the sheet material 4 is pushed downward by the blade receiving member 63. Accordingly, the elastic member 26b of the support member 26 is compressed and deformed, and the sheet material 4 is cut by the punching blade 3 (see FIG. 6B).

  When the sheet material 4 is cut, the sheet material 4 is supported by the cylindrical member 21 and the support members 25, 26 and 62. At this time, the cylindrical member 21 and the support member 62 support the same part of the sheet material 4 so as to be sandwiched between the back side and the front side. Further, the elastic member 21b of the cylindrical member 21 and the elastic member 62b of the support member 62 are deformed according to the shape of the sheet material. As a result, the sheet material 4 is punched without being damaged or deformed.

  When the sheet material 4 is punched and the tray 5 is manufactured, negative pressure is applied through the through hole 22 by a vacuum device (not shown) connected to the lower side of the punching die 1, and the tray 5 is applied to the cylindrical member 21. Adsorbed. In this state, the cradle 6 is raised and the cradle 6 is separated from the tray 5 (see FIG. 6C).

  Thereafter, application of negative pressure by the vacuum device is stopped, and the punched tray 5 is transported from the punching die 1 to a collection position (not shown) by a transport device (not shown).

  When another tray having the same shape as that of the tray 5 and having a depth larger than that of the tray 5 is manufactured, the tubular member 21 of the punching die 1 is replaced with the replacement tubular member 24 for the tray. To do. That is, the cylindrical member 21 is removed from the base 2 and the replacement cylindrical member 24 is attached to the mounting position P of the base 2. By using the punching die 1 to which the replacement tubular member 24 is mounted in this manner, a punching process similar to that for the sheet 4 described above is performed, thereby producing a tray having a large depth. Therefore, it is not necessary to manufacture a punching die for each product, and it is possible to cope with a plurality of products (products having different bottom depths) only by changing the cylindrical member.

(Embodiment 2)
FIG. 7 is a front sectional view showing a schematic configuration of the punching die according to the present embodiment. The punching die 201 according to the present embodiment has a guide member 221 having a shape that matches the inner shape of the tray 51 that is a product, inside the punching blade 3 that is arranged in an annular shape.

  The configuration of the punching die 201 according to the present embodiment will be described in more detail. The base 202 of the punching die 201 has a flat plate shape having no through holes. A guide member 221 is attached to the base 202 in place of the cylindrical member 21 and the support member 25.

  The guide member 221 is for supporting a concave portion of a sheet material corresponding to a tray as a product from the inside, and has a guide portion 221a having the same outer shape as the inner surface shape of the concave portion. The guide portion 221a is made of a rigid material that does not substantially elastically deform, such as wood or plastic. An elastic member 221b made of a urethane sponge is attached to the back side surface of the guide portion 221a. A first member, which is one member of the hook-and-loop fastener (the side having a large number of hook-like raised portions), is fixed to the back end face of the elastic member 221b. On the other hand, a mounting position P2 for mounting the guide member 221 is provided on the front side surface of the base 202, and the mounting position P2 is the other member of the hook-and-loop fastener (the side having a large number of looped raising). A certain second member is fixed. The guide member 221 is attached to the attachment position P <b> 2 of the base 202 by sticking the first member of the guide member 221 to the second member of the base 202.

  The guide member 221 is a dedicated product for manufacturing a tray having a predetermined shape. In the punching die 201 according to the present embodiment, the guide member 221 is removed, and another guide that is a dedicated product for manufacturing a tray different from the tray (a tray having a deeper bottom than the tray). It can be replaced with a member (hereinafter referred to as “exchange guide member”). The replacement guide member has a guide portion having the same outer shape as the inner surface shape of the tray having a large bottom depth, and the other configuration is the same as that of the guide member 221. The replacement member is attached to the attachment position P <b> 2 of the base 202 by sticking the first member fixed to the back side end surface of the replacement guide member to the second member of the base 202.

  In addition, since the other structure of the punching die 201 according to the present embodiment is the same as that of the punching die 1 according to the first embodiment, the description thereof is omitted.

(Embodiment 3)
FIG. 8 is a front sectional view showing a schematic configuration of the punching die according to the present embodiment. In the punching die 301 according to the present embodiment, an annular recess 302 a is provided on the front side surface of the base 302 so as to surround the through hole 22 provided in the center of the base 302. That is, the mounting position P of the base 302 is a recess 302a that is one step lower than the surroundings. A second member 23b of a hook-and-loop fastener is fixed to the recess 302a.

  When the cylindrical member 21 is attached to the base 302, the attachment position P is set as the concave portion 302a, so that the outer periphery of the cylindrical member 21 is aligned with the stepped portion around the attachment position P so that the cylindrical member 21 is Positioned. Thereby, the cylindrical member 21 can be accurately attached to the attachment position P.

  In addition, since the cylindrical member 21 is fitted into the recess 302 a, high sealing performance is secured at the connection portion between the cylindrical member 21 and the base 302. Therefore, when a negative pressure is applied to the inside of the cylindrical member 21 by the vacuum device, the loss of the negative pressure is reduced.

  Since the other configuration of the punching die 301 according to the present embodiment is the same as that of the punching die 1 according to the first embodiment, the description thereof is omitted.

(Embodiment 4)
FIG. 9 is a front sectional view showing a schematic configuration of the punching die according to the present embodiment. In the punching die 401 according to the present embodiment, a square annular convex portion 403 is provided on the front side surface of the base 402 so as to surround the annular mounting position P of the base 402. That is, the convex portion 403 that is one step higher than the mounting position P is provided around the mounting position P of the base 402.

  When the cylindrical member 21 is attached to the base 402, since the convex portion 403 is provided around the attachment position P, the cylindrical member 21 is aligned with the inner surface of the convex portion 403 so that the outer periphery of the cylindrical member 21 is aligned. 21 is positioned. Thereby, the cylindrical member 21 can be accurately attached to the attachment position P.

  Moreover, since the cylindrical member 21 is fitted inside the convex part 403, high sealing performance is ensured at the connection portion between the cylindrical member 21 and the base 402. Therefore, when a negative pressure is applied to the inside of the cylindrical member 21 by the vacuum device, the loss of the negative pressure is reduced.

  In addition, about the other structure of the punching die 401 which concerns on this Embodiment, since it is the same as that of the punching die 1 which concerns on Embodiment 1, the description is abbreviate | omitted.

(Other embodiments)
In the first to fourth embodiments described above, the cylindrical member 21 and the guide member 221 can be attached to and detached from the bases 2, 202, 302, and 402 by means of a hook-and-loop fastener, and replaced with the replacement cylindrical member 24 and the replacement guide member. Although the possible configuration has been described, the present invention is not limited to this. A sheet-like magnet is fixed to the back side end surface of the cylindrical member 21 or the guide member 221, and a carbon steel plate material, which is a magnetic body, is fixed to the mounting positions P and P 2 of the bases 2, 202, 302, and 402. The cylindrical member 21 and the guide member 221 can be attached to and detached from the bases 2, 202, 302, and 402 by a magnet, and the replacement cylindrical member 24 and the replacement guide member can be exchanged with the magnet fixed to the back side end surface. It is also possible to do. Further, a magnetic plate can be fixed to the cylindrical member 21 or the guide member 221 (and the replacement cylindrical member and the replacement guide member), and a magnet can be fixed to the bases 2, 202, 302, and 402. The cylindrical member 21 or the guide member 221 (and the replacement cylindrical member and the replacement guide member) and the bases 2, 202, 302, and 402 are arranged so that the opposite surfaces have opposite polarities. 21 and the guide member 221 can be attached to and detached from the bases 2, 202, 302, and 402 by magnetic force, and can be replaced with the replacement cylindrical member 24 and the replacement guide member.

  Further, the cylindrical members 21, the guide member 221, and the bases 2, 202, 302, 402 are not provided with adsorption members such as hook-and-loop fasteners or magnets, and the bases 302, 402 of the third and fourth embodiments. In addition, by making the mounting position P a concave portion or providing a convex portion around the mounting position P, the cylindrical member 21 and the guide member 221 are fitted to the stepped portion around the mounting position P, thereby The cylindrical member 21 and the guide member 221 can be attached to and detached from the bases 2, 202, 302, and 402, and can be exchanged for the replacement cylindrical member 24 and the replacement guide member that are not provided with surface fasteners or magnets on the back side surface. It is also possible to do.

  In the first to fourth embodiments described above, the configuration in which the cylindrical member 21 and the guide member 221 are used as the members that can be attached to and detached from the bases 2, 202, 302, and 402 has been described. is not. It is possible to make the support member 25 arranged inside the annular punching blade 3 detachable from the base 2, and a member different from the cylindrical member 21, the support member 25, and the guide member 221, for example, punching A support member for the other sheet material 4 such as a wooden guide member and a honeycomb plate disposed inside the blade 3 is configured to be detachable from the base, and has a height higher than that of the wooden guide member and the honeycomb plate. It is also possible to make it possible to manufacture a plurality of products with different bottom depths by making it possible to replace with different replacement wooden guide members, honeycomb plates or the like.

  Moreover, in Embodiment 2 mentioned above, although the structure which adheres the 1st member of a surface fastener directly to the elastic member 221b of the guide member 221 was described, it is not limited to this. A plate-like member made of a material that does not generate elastic deformation, such as wood or plastic, is fixed to the back side surface of the elastic member 221b, and the first member of the hook-and-loop fastener is fixed to the back side surface of the plate-like member. It is also possible. Thus, by providing the plate-like member on the mounting surface side of the guide member 221 to the base 202, it is possible to prevent the elastic member 221b from being damaged during attachment / detachment.

  Moreover, in Embodiment 1 thru | or 4 mentioned above, although the structure which uses an elastic member as a urethane sponge was described, it is not limited to this. It is also possible to use synthetic resin rubber as the elastic member.

  The punching die and the non-working material cutting method of the present invention are useful as a punching die and a work material cutting method for cutting a work material used for a synthetic resin tray or the like.

DESCRIPTION OF SYMBOLS 1 Punching die 2 Base 21 Cylindrical member 21a Base part 21b Elastic member 22 Through-hole 23a 1st member 23b 2nd member 24 Replacement cylindrical member 3 Punching blade 4 Sheet material 5 Tray P Attachment position

In order to solve the above-described problems, a punching die according to an aspect of the present invention includes a base, a belt-like blade attached to the base and bent in a two-dimensional ring shape, and the belt-like blade of the base. And a support member that supports the workpiece, and the support member has a depth of the recess to support the inner bottom surface of the recess of the workpiece having the recess. And has a recess having a depth different from that of the recessed portion of the workpiece. In order to support the inner bottom surface of the concave portion of another workpiece , an exchange support member having a height corresponding to the depth of the concave portion of the other workpiece can be attached to the attachment position. It is configured as follows.

Further, in the above aspect, the support member is a cylindrical body having a cavity for adsorbing the workpiece, and supports the inner bottom surface of the recess of the workpiece on one annular end surface. You may be comprised so that attachment or detachment is possible at the attachment position of the said base in an end surface .

According to another aspect of the present invention, there is provided a method for cutting a workpiece by using a punching die having a base and a band-shaped blade attached to the base and bent in a two-dimensional ring shape. In the cutting method for cutting, in the case of manufacturing a first product having a first recess having a predetermined depth , the first workpiece is attached to the mounting position inside the belt-like blade of the base. attaching a first support member having a height corresponding to the depth of said first recess to support the inner bottom surface of the first concave portion provided detachably, thus the first to the first support member of the first workpiece whose inner bottom face is supported in the recess was cut by the band blade, when the depth from the first recess to produce a second product having a different second recess It is on the inside of the mounting position of the strip edges of the base, provided in the second workpiece Attaching a second support member having a height corresponding to the depth of the second recess to support the inner bottom surface of the second recess detachably, said thus the second recess to the second supporting member The second workpiece with the inner bottom surface supported is cut by the strip blade.

Claims (8)

The base,
A band-shaped blade attached to the base and bent into a two-dimensional ring;
A support member attached to the inside of the belt-like blade of the base and supporting a workpiece;
In a punching die comprising
The support member is configured to be detachable at the mounting position of the base,
The support member is removed from the attachment position, and an exchange support member having a height different from that of the support member can be attached to the attachment position.
Punching mold. The base has a step formed around the mounting position so that the mounting position is lower than the surroundings, and the support member can be positioned by the step.
The punching die according to claim 1. In the base, the mounting position is formed as a recess,
The punching die according to claim 2. The base has a convex portion surrounding the mounting position,
The punching die according to claim 2 or 3. The base has a first member of a hook-and-loop fastener attached to the attachment position,
The support member has a second surface of a hook-and-loop fastener detachably attached to the first member on a connection surface to the base.
The punching die according to any one of claims 1 to 4. The base has a magnet or a magnetic body attached to the attachment position,
The support member has a magnetic body or a magnet attached to the connection surface to the base to be attracted to the magnet or the magnetic body.
The punching die according to any one of claims 1 to 4. The support member includes a rigid member having a connection surface to the base, and an elastic member fixed to the rigid member.
The punching die according to claim 5 or 6. In a cutting method for cutting a workpiece by a punching die having a base and a band-shaped blade attached to the base and bent in a two-dimensional ring shape,
When manufacturing a first product having a first shape with a predetermined bottom depth,
A first support member having a height corresponding to the first product is detachably attached to an attachment position inside the strip blade of the base,
The workpiece supported by the first support member is cut by the strip blade,
When manufacturing a second product having a second shape having a bottom depth different from the first shape,
A second support member having a height corresponding to the second product is detachably attached to an attachment position inside the strip blade of the base,
The workpiece supported by the second support member is cut by the strip blade,
A method of cutting a workpiece.

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