JP7553380B2 - Thomson mold and manufacturing method of the product - Google Patents

Description

This disclosure relates to a Thomson mold and a method for manufacturing a product using a Thomson mold.

The Thomson mold is inexpensive and widely used as a mold for mass-producing the same products (see, for example, Patent Document 1).

JP 2019-177466 A (paragraph [0001])

However, as Thomson dies become more widespread, there is a demand for improved machining accuracy of products using Thomson dies. Therefore, this disclosure provides technology that can improve machining accuracy using Thomson dies compared to conventional techniques.

The first aspect of the present invention, which was made to solve the above problems, is a Thomson type that has a product receiving section that cuts off a part of the material and receives it as a product, and an air passage that communicates with the inside and outside of the product receiving section and includes a groove or through hole that exhausts the air inside the product receiving section to the outside.

According to the first aspect of the invention, when a part of the material is cut by the Thomson die and pushed into the product receiving section of the Thomson die, the air inside the product receiving section escapes to the outside through the ventilation passage, suppressing deformation of the material caused by the compressed air inside the product receiving section and improving the machining accuracy of the Thomson die compared to conventional methods.

FIG. 1 is a perspective view of a Thomson type according to a first embodiment; Bottom view of Thomson type Cross section of Thomson type Cross-sectional view showing the punching process using a Thomson die Perspective view of cut material

[First embodiment]
A Thomson die 10 according to an embodiment of the present disclosure will be described with reference to Figures 1 to 5. As shown in Figure 1, the Thomson die 10 of this embodiment includes a positioning protrusion 12 and a Thomson blade 13 fixed to a support plate 11.

The support plate 11 is, for example, a wooden plate having a rectangular shape. Hereinafter, the longitudinal direction of the support plate 11 is referred to as the "horizontal direction H1" and the short direction is referred to as the "vertical direction H2". The support plate 11 may be a veneer board (so-called plywood), a single-phase wooden board, or even a resin board or a metal board.

The positioning protrusion 12 is a rectangular frame-shaped foamed resin body that is slightly smaller than the support plate 11 and is fixed to the top surface of the support plate 11, for example with an adhesive. The cross section of each side of the positioning protrusion 12 is a square, and the top surface 12J of the positioning protrusion 12 is horizontal like the top surface of the support plate 11, and the inner surface 12N of the positioning protrusion 12 is perpendicular to the top surface of the support plate 11.

The Thomson blades 13 are provided in multiple locations inside the positioning projection 12 and stand up from the top surface of the support plate 11. Specifically, the Thomson blades 13 are in the form of a horizontally extending strip, and the upper side of the widthwise direction is a double-edged blade with a groove on both the front and back sides. The lower part of the widthwise direction of the Thomson blades 13 is divided into multiple insertion pieces by vertically elongated notches 13K (see FIG. 2) formed at multiple positions in the longitudinal direction, and these insertion pieces are pressed into slits 11K formed in the support plate 11. As a result, the multiple Thomson blades 13 stand up vertically from the support plate 11, and the cutting edges are horizontal. The height from the top surface of the support plate 11 to the top end of the Thomson blades 13, that is, the cutting edge of the multiple Thomson blades 13, is uniform and is, for example, about half the height of the positioning projection 12.

The Thomson blade 13 may be a single-edged blade with a chamfer on only one of the front and back surfaces. The blade length of the multiple Thomson blades 13 may be different, or the blade length of one Thomson blade 13 may vary in the longitudinal direction of the Thomson blade 13 (the blade tip may be inclined relative to the horizontal direction).

The multiple Thomson blades 13 include first to third Thomson blades 13A to 13C, which are arranged as follows in the material receiving section R1 inside the positioning projection 12. That is, the first Thomson blade 13A is arranged at a position slightly shifted inward from both ends of the material receiving section R1 in the horizontal direction H1 and extends straight in the vertical direction H2. The second Thomson blade 13B is arranged at a position further inward than the pair of first Thomson blades 13A from both ends of the material receiving section R1 in the horizontal direction H1 and extends straight in the vertical direction H2.

The third Thomson blades 13C are arranged in two rows in the vertical direction H2 between a pair of second Thomson blades 13B. Each third Thomson blade 13C is, for example, roughly U-shaped, and is arranged in a state where the opening of the U-shape is blocked by the horizontal side of the positioning projection 12 that extends in the horizontal direction H1. In this embodiment, the area surrounded by the multiple third Thomson blades 13C and the horizontal side of the positioning projection 12 forms multiple product receiving portions R2 in the Thomson mold 10.

In addition, both ends of the first to third Thompson blades 13A, 13C are each received in a notch 12K formed in the positioning protrusion 12.

Although not shown in FIG. 1, as shown in FIG. 3, the material receiving section R1 is filled with extrusion members 14 that are thicker than the blade height of the Thomson blade 13. The extrusion members 14 are made by dividing a flat plate made of foamed resin, which has the same planar shape as the material receiving section R1, into multiple parts 14P at positions corresponding to the Thomson blade 13. In addition, a gap equal to the thickness of the Thomson blade 13 is formed between the parts 14P. Furthermore, the upper surface of the extrusion member 14 is positioned at a position that is approximately 2/3 the height of the positioning protrusion 12.

Before describing the detailed configuration of the Thomson die 10 of this embodiment, we will briefly explain the manufacturing method for producing multiple products 91 using the Thomson die 10.

As shown in FIG. 4(A), the support plate 11 of the Thomson die 10 is fixed to the upper surface of the lower platen of the press machine by overlapping it. A backing plate 95 of the same size as the support plate 11 or larger is fixed to the upper platen of the press machine. The backing plate 95 is made of a material (e.g., a resin plate or a wooden plate) that will not damage the Thomson blade 13 even when it comes into contact with it. The material 90 is prepared by cutting a foamed resin plate thicker than the height difference between the upper surface 12J of the positioning protrusion 12 and the upper surface of the extrusion member 14 into a flat shape that fits just inside the positioning protrusion 12.

The material 90 is pushed into the positioning projection 12 with the upper platen of the press machine and the backing plate 95 positioned near the top dead center, and the lower surface of the material 90 is set in a state where it abuts against the upper surface of the extrusion member 14 and the upper surface of the material 90 is positioned above the upper surface 12J of the positioning projection 12. Then, when the press machine is started, the backing plate 95 descends, and as shown in Figures 4(A) and 4(B), the material 90 and the extrusion member 14 are elastically compressed in the vertical direction and pushed into the positioning projection 12. Then, the backing plate 95 descends further, and as shown in Figures 4(B) and 4(C), the positioning projection 12, the material 90, and the extrusion member 14 are elastically compressed in the vertical direction. Then, when the backing plate 95 reaches the bottom dead center, the upper ends of the multiple Thompson blades 13 abut against the backing plate 95 so as to slightly bite into it. As a result, the material 90 is cut into a plurality of parts having the same planar shape as the plurality of parts 14P of the extrusion member 14, and the portions of the plurality of parts that are pushed into the plurality of third Thompson blades 13C become a plurality of products 91 (see FIG. 5). In this embodiment, the press is started with the upper surface plate of the press at its lowest position, i.e., with the bottom dead center preset.

Then, the backing plate 95 returns to the vicinity of the top dead center and stops. Then, the material 90 elastically recovers together with the positioning projection 12 and the extrusion member 14, returning to the state where it protrudes from the positioning projection 12 (see FIG. 4(A)). Then, the material 90 is removed from the positioning projection 12, and only the multiple products 91 are collected from the material 90, completing the production of the products 91.

In the Thomson die 10 of this embodiment, in order to improve the processing accuracy, the compression stiffness of the positioning protrusion 12 and the extrusion member 14 is higher than that of the material 90. Specifically, in this embodiment, the positioning protrusion 12 and the extrusion member 14 are, for example, rubber foam, and the material 90 is, for example, polyethylene foam. In addition, the foam structure is common in that both are closed-cell structures. As a result, the compression stiffness of the positioning protrusion 12 and the extrusion member 14 is higher than that of the material 90. In this embodiment, the foaming ratio of the rubber foam of the positioning protrusion 12 and the extrusion member 14 is both 3 to 10 times, and the foaming ratio of the polyethylene foam of the material 90 is 15 times.

And, since the compression stiffness of the positioning projection 12 is higher than that of the material 90, the restriction of the escape of the compressed material 90 to the side (i.e., the positioning projection 12 side) is strengthened. Also, since the compression stiffness of the extrusion member 14 is higher than that of the material 90, the compression rate of the material 90 is increased. Here, since the extrusion member 14 protrudes from the Thomson blade 13 before being pushed by the material 90 as described above, the material 90 can be compressed a lot before the material 90 reaches the upper end of the Thomson blade 13. Specifically, the extrusion member 14 of the Thomson die 10 of this embodiment is configured to push back the material 90 and compress and deform the material 90 until it becomes thinner than the blade length of the Thomson blade 13 by being pushed by the material 90 and compressed to the same thickness as the blade length of the Thomson blade 13. And, since the material 90 is cut by the Thomson blade 13 in a state compressed at a high compression rate, the variation in processing is suppressed, and the perpendicularity of the cut surface by the Thomson blade 13 on both the front and back sides of the material 90 is increased. In other words, curvature of the cut surface by the Thomson blade 13 on both the front and back sides of the material 90 is suppressed. The double-edged structure of the Thomson blade 13 also improves the perpendicularity. Moreover, the Thomson blade 13 includes first and second Thomson blades 13A and 13B for cutting both ends of the material 90 in the longitudinal direction that will not become the product 91, so that variations in the compression state of both ends of the material 90 due to variations in the length of the material 90 are less likely to extend to multiple products 91, which also improves the processing accuracy of the products 91 by the Thomson die 10.

In addition to the rubber foam mentioned above, the positioning protrusion 12 and the extrusion member 14 can be made of, for example, polyethylene foam, polyurethane foam, ethylene-vinyl acetate copolymer resin foam (EVA foam), silicone foam, latex foam, and polyvinyl chloride resin foam. Also, as for the material 90, if it has a lower compression rigidity than the positioning protrusion 12 and the extrusion member 14, the foams mentioned above can be used in addition to polyethylene foam.

The positioning protrusion 12 and the extrusion member 14, and the material 90 may be made of the same type of foamed resin. In that case, it is preferable to adjust either or both of the foaming ratio and the thickness of the material so that the compression stiffness of the positioning protrusion 12 and the extrusion member 14 is higher than the compression stiffness of the material 90.

The positioning protrusion 12 and the extrusion member 14 may be made of elastomer other than the rubber foam for the material 90, which is a foamed resin body, so that the compression stiffness of the positioning protrusion 12 and the extrusion member 14 is higher than that of the material 90. The foamed resin of the positioning protrusion 12 and the extrusion member 14 and the foamed resin of the material 90 may both have an open-cell structure, or when the foamed resin of the material 90 has an open-cell structure, the foamed resin of the positioning protrusion 12 and the extrusion member 14 may have a closed-cell structure, so that the compression stiffness of the positioning protrusion 12 and the extrusion member 14 is higher than that of the material 90. The Thomson die 10 may also be configured so that only one of the positioning protrusion 12 and the extrusion member 14 has a higher compression stiffness than that of the material 90, and the other has a compression stiffness equal to or lower than that of the material 90.

In the Thomson die 10 of this embodiment, in order to improve the processing accuracy, in addition to the configuration related to the compression rigidity of the positioning protrusion 12 and the extrusion member 14 described above, the Thomson die 10 is provided with an air passage 20. The air passage 20 includes the through holes 13H, 14H, and 15 and the back groove 16 described below. As shown in FIG. 1, the through holes 15 are round holes that vertically penetrate the approximate center positions of each product receiving portion R2 of the support plate 11, and are arranged in multiple rows and columns vertically and horizontally of the support plate 11 as shown in FIG. 2. In addition, the through holes 14H are round holes that vertically penetrate the parts 14P of the extrusion member 14 that are fitted into each product receiving portion R2 as shown in FIG. 3, and have the same inner diameter as the through holes 15 of the support plate 11 and are arranged coaxially. As shown in FIG. 1, the through holes 13H are circular holes that pass horizontally through each of the third Thomson blades 13C, and are located at the midpoint of each of the horizontal and vertical straight sections of each of the third Thomson blades 13C, below the edge and above the support plate 11.

In the Thomson die 10 of this embodiment, the support plate 11 does not have a through hole 15 in any part other than the product receiving portion R2. In addition, the extrusion member 14 does not have a through hole 14H in any part 14P other than the part 14P fitted into the product receiving portion R2. Furthermore, the first and second Thomson blades 13A and 13B of the Thomson blade 13, which are away from the product receiving portion R2, do not have a through hole 13H.

As shown in FIG. 1, the back groove 16 is formed on the back surface of the support plate 11, which is opposite to the surface having the positioning protrusion 12. As shown in FIG. 2, the back groove 16 includes a plurality of lateral grooves 16A extending along the entire lateral direction H1 of the support plate 11, and a plurality of vertical grooves 16B extending along the entire longitudinal direction H2 of the support plate 11, and the through holes 15 of the support plate 11 are disposed at all intersections of the lateral grooves 16A and the vertical grooves 16B. Both ends of the lateral grooves 16A and the vertical grooves 16B open to the outer surface 11S of the support plate 11, and the middle portions open to the inner surface of the through holes 15.

The ventilation path 20 includes the through holes 13H, 14H, 15 and the back groove 16 described above, and communicates with the inside and outside of each product receiving portion R2, and improves the machining accuracy of the Thomson die 10 by discharging the air in each product receiving portion R2 to the outside. In other words, if the Thomson die 10 does not have the ventilation path 20, when the upper opening of the positioning protrusion 12 is blocked by the material 90, the air in the positioning protrusion 12 above the extrusion member 14 and the air contained in the extrusion member 14 are trapped in the material receiving portion R1. When the positioning protrusion 12, the extrusion member 14, and the material 90 are pressed against the backing plate 95 and compressed all at once, the air trapped in each material receiving portion R1 has no place to escape and accumulates between the material 90 and the extrusion member 14 and the positioning protrusion 12, so-called air pockets may be formed. Air pockets that occur between the material 90 and the extrusion member 14 in the product receiving section R2 may cause the material 90 to be compressed and partially curved in the product receiving section R2 before being cut by the third Thompson blade 13C to become the product 91, resulting in reduced and variable processing accuracy. Air pockets that occur between the material 90 and the extrusion member 14 around the product receiving section R2 may also adversely affect the processing accuracy of the product 91 due to the curved deformation around the portion of the material 90 that will become the product 91.

In contrast, in the Thomson die 10 of this embodiment, the air in each product receiving portion R2 is discharged to the outside of the Thomson die 10 through the through holes 14H of the extrusion member 14 and the through holes 15 and back grooves 16 of the support plate 11 connected thereto. In addition, the air around each product receiving portion R2 of the material receiving portion R1 is also discharged to the outside via the product receiving portion R2 by the multiple through holes 13H of the third Thomson blade 13C. As a result, no air pockets are generated in and around the product receiving portion R2, and the processing accuracy of the product 91 by the Thomson die 10 is improved. In addition, when the cutting of the material 90 is completed and the backing plate 95 is raised, air is easily sucked into the material receiving portion R1 through the ventilation path 20 as the positioning projection 12, the extrusion member 14, and the material 90 elastically recover, and the elastic recovery speed of the positioning projection 12, the extrusion member 14, and the material 90 is increased, improving productivity.

As described above, according to the Thomson die 10 of this embodiment and the method for manufacturing a product using the Thomson die 10, the Thomson die 10 has an air passage 20, and both the positioning protrusion 12 and the extrusion member 14 have elasticity and a higher compression stiffness than the material 90, so that the processing precision can be improved compared to the conventional method.

[Other embodiments]
(1) Instead of the rear surface groove 16 of the support plate 11 in the above embodiment, for example, a plurality of protrusions may be provided on the rear surface of the support plate 11, or spacers may be stacked to form a gap as the air passage 20 between the lower surface plate of the press machine and the support plate 11. Also, if a groove is formed in the lower surface plate of the press machine, the through hole 15 of the support plate 11 may be disposed opposite the groove.

(2) In the Thomson die 10 of the above embodiment, instead of providing the through holes 15, the surface (top surface) of the support plate 11 from which the positioning projections 12 and the Thomson blade 13 protrude may be provided with multiple vertical and horizontal grooves that extend across the entire length and width of the support plate 11, similar to the back surface groove 16 shown in Figure 2, to connect each product receiving portion R2 to the outside of the positioning projections 12.

(3) In the above embodiment of the Thomson die 10, the through holes 15 are formed only in each product receiving portion R2 of the support plate 11, but the through holes 15 may be provided only in the portion of the support plate 11 surrounding the product receiving portion R2, and the air in the product receiving portion R2 may be exhausted to the outside through the through holes 13H of the third Thomson blade 13C and the through holes 15 of the support plate 11 surrounding the product receiving portion R2, or the through holes 13H of the third Thomson blade 13C may be eliminated, and the through holes 15 may be provided in each product receiving portion R2 of the support plate 11 and around the product receiving portion R2. Furthermore, only the inside of each product receiving portion R2, which has the greatest effect on the shape of the product 91, may be connected to the outside. In other words, the through holes 13H of the third Thomson blade 13C in the first embodiment may be eliminated.

(4) Furthermore, the ventilation passage 20 may be a through hole that penetrates the positioning projection 12 from the side, or a through hole that penetrates the first and second Thomson blades 13A, 13B from the side. However, when provided in the positioning projection 12, it is preferable to provide a through hole of a size that ensures the support function of the positioning projection 12 for the material 90. Also, since it is more difficult to form a through hole in the Thomson blade 13 than to form a through hole 15 or a back groove 16 in the support plate 11, it is preferable from a cost perspective to provide a through hole 13H only in the third Thomson blade 13C around the product receiving portion R2 of the Thomson blade 13 as in the first embodiment.

(5) In the above embodiment, the Thomson die 10 improves the machining accuracy by using both the air passage 20 and the positioning protrusion 12 and the compression rigidity of the extrusion member, but it is also possible to improve the machining accuracy by using only one of the Thomson die 10.

(6) Although the Thomson die 10 in the above embodiment has a positioning protrusion 12, it does not have to have a positioning protrusion 12. Also, for example, the positioning protrusion 12 in the above embodiment may have only one of a pair of short sides and only one of a pair of long sides.

(7) Although a foamed resin body is given as an example of the material 90, the material 90 is not limited to a foamed resin body and may be, for example, rubber or cardboard.

(8) In the air passage 20 of the Thomson die 10 of the above embodiment, the through hole 15 and back groove 16 of the support plate 11 and the through hole 14H of the extrusion member 14 may not be provided, and only the through hole 13H of the Thomson blade 13 may be provided. Also, in the air passage 20 of the Thomson die 10 of the first embodiment, the through hole 15 and back groove 16 of the support plate 11 and the through hole 13H of the Thomson blade 13 may not be provided, and only the through hole 14H of the extrusion member 14 may be provided. With these configurations, the machining accuracy of the Thomson die is improved compared to conventional methods.

(9) In the Thomson die 10 of the above embodiment, as shown in FIG. 4(A), the material 90 is thicker than the height difference between the upper surface 12J of the positioning protrusion 12 and the upper surface of the extrusion member 14, but the material 90 may be the same thickness as the height difference or thinner than the height difference.

(10) In the above embodiment of the Thomson die 10, the material 90 has a planar shape that fits exactly inside the positioning projection 12 (material receiving portion R1). However, as long as the planar shape of the inside of the positioning projection 12 is not larger than the planar shape of the inside of the positioning projection 12, for example, the longitudinal length of the material 90 may be shorter than the longitudinal length of the inside of the positioning projection 12.

(11) In the above embodiment of the Thomson die 10, the product receiving portion R2 is formed by the third Thomson blade 13C and the horizontal side of the positioning protrusion 12, but the product receiving portion R2 may be formed only by the Thomson blade 13.

<Additional Notes>
The following describes the features of the inventions extracted from the above embodiments, while indicating, as necessary, their effects, etc. In the following, for ease of understanding, the corresponding configurations in the above embodiments are appropriately indicated in parentheses, but the present invention is not limited to the specific configurations indicated in parentheses.

[Feature A1]
a product receiving section for cutting a part of the material and receiving it as a product;
A Thomson type having an air passage that communicates with the inside and outside of the product receiving portion and includes a groove or a through hole for discharging air within the product receiving portion to the outside.

According to feature A1, when a part of the material is cut by the Thomson die and pushed into the product receiving section of the Thomson die, the air inside the product receiving section escapes to the outside through the ventilation passage, so deformation of the material caused by the compressed air inside the product receiving section is suppressed, and the processing accuracy of the Thomson die is improved compared to conventional methods.

[Feature A2]
2. The Thomson die according to claim 1, wherein the air passage includes a through hole penetrating a support plate that supports the Thomson blade.

As an air passage, as in feature A2, a through hole is provided in the support plate, allowing the air inside the product receiving section to escape to the outside.

[Feature A3]
The Thomson type described in feature A2, wherein the air passage includes a back surface groove formed on the back surface of the support plate opposite the side from which the Thomson blade protrudes, connecting between the through hole of the support plate and the outer surface of the support plate.

According to feature A3, air can be released to the outside through the through holes in the support plate and the back groove.

[Feature A4]
A Thomson type according to any one of features A1 to A3, wherein the air passage includes a through hole penetrating the Thomson blade.

According to feature A4, the through holes in the Thompson blade allow air inside the product receiving section to escape outside the product receiving section.

[Feature A5]
A Thomson type according to any one of Features A1 to A4, wherein the product receiving portion accommodates an extrusion member that is pressed by the material, elastically compressed, and then elastically returns to its original state to extrude the product from the product receiving portion.

Feature A5 makes it possible to easily remove the product from the Thomson mold.

[Feature A6]
The Thomson type according to Feature A5, wherein the air passage includes a through hole penetrating the extrusion member.

Feature A6 makes it possible to discharge air that escapes from the material when the material is compressed to the outside through the through-holes of the extrusion member.

[Feature A7]
The Thomson type according to Feature A5 or Feature A6, wherein the extrusion member has a higher compression rigidity than the material and protrudes from the Thomson blade before being pressed by the material.

According to feature A7, the compression stiffness of the extrusion member is higher than that of the material, making it possible to increase the compression rate of the material.

[Feature A8]
The extrusion member is pressed against the material, and compresses and deforms the material until the material is compressed to a thickness equal to or smaller than the blade height of the Thomson blade.

According to feature A8, the material is cut by the Thomson blade while compressed at a high compression ratio, which reduces processing variation and makes it possible to increase the perpendicularity of the cut surface by the Thomson blade on both the front and back sides of the material.

[Feature A9]
A positioning protrusion is provided which protrudes from a support plate supporting the Thomson blade, positions the material in a direction parallel to the support plate, and is pressed by a press machine together with the material to be compressed and deformed;
A Thomson type according to any one of features A1 to A8, wherein the compressive stiffness of the positioning protrusion is higher than the compressive stiffness of the material.

According to feature A9, the compression stiffness of the positioning projection is higher than that of the material, which strengthens the restriction of the compressed material from escaping to the side.

[Feature A10]
A method for manufacturing a product in which a part of a material is cut from a Thomson mold and an air passage including a groove or through hole that connects the inside and outside of a product receiving section that receives the product by cutting the material with the Thomson mold while discharging the air inside the product receiving section to the outside through the air passage.

According to feature A10, when a part of the material is cut by the Thomson die and pushed into the product receiving section of the Thomson die, the air inside the product receiving section escapes to the outside through the ventilation passage, so deformation of the material caused by the compressed air inside the product receiving section is suppressed, and the processing accuracy of the Thomson die is improved compared to conventional methods.

[Feature A11]
A method for manufacturing a product as described in feature A10, comprising: housing an extrusion member in the product receiving section for extruding the product from the product receiving section; setting the compression rigidity of the extrusion member higher than that of the material; and compressively deforming a portion of the material before forcing it into the product receiving section.

According to feature A11, the compression stiffness of the extrusion member is higher than that of the material, making it possible to increase the compression rate of the material.

[Feature A12]
A method for manufacturing a product according to feature A11, in which the extruded member is made thicker than the blade height of the Thomson blade of the Thomson type, and the material is compressed and deformed to a thickness equal to or smaller than the blade height by the time the extruded member is pressed by the material and reaches the same thickness as the blade height.

According to feature A12, the material is cut by the Thomson blade in a state compressed at a high compression ratio, which reduces processing variation and makes it possible to increase the perpendicularity of the cut surface by the Thomson blade on both the front and back sides of the material.

[Feature A13]
A manufacturing method for a product described in feature A11 or 12, in which a support plate supporting the Thomson blade is provided with a positioning protrusion that has a compressive rigidity higher than that of the material and positions the material in a direction parallel to the support plate, and the positioning protrusion is compressively deformed together with the material.

According to feature A13, the compression stiffness of the positioning projection is higher than that of the material, which strengthens the restriction of the compressed material from escaping to the side.

[Feature A14]
The method of any one of Features A10 to A13, wherein the product is made of foamed resin.

The product may be made of, for example, cardboard or rubber, but it may also be made of foamed resin (configuration of feature A14).

[Feature B1]
A Thomson type in which the part of the Thomson blade that protrudes from the support plate has a through hole.

Feature B1 allows air to escape through the through holes in the Thompson blade.

[Feature C1]
a product receiving section for cutting a part of the material and receiving it as a product;
an extrusion member that is accommodated in the product receiving portion, is pressed by the material to be elastically compressed, and then elastically returns to its original state to extrude the product from the product receiving portion;
A Thomson die having a through hole formed through the extrusion member.

Feature C1 allows air to escape through the through-holes in the extrusion member.

[Feature D1]
a product receiving section for cutting a part of the material and receiving it as a product;
a push-out member that is accommodated in the product receiving portion, is pressed by the material to be elastically compressed, and then elastically returns to its original state to push out the product from the product receiving portion,
The extrusion member is a Thomson type having a higher compression rigidity than the material and protruding from the Thomson blade before being pressed by the material.

According to feature D1, the compression stiffness of the extrusion member is higher than that of the material, making it possible to increase the compression rate of the material.

[Feature D2]
The extrusion member is pressed against the material, and compresses and deforms the material until the material is compressed to a thickness equal to or smaller than the blade height of the Thomson blade.

According to feature D2, the material is cut by the Thomson blade in a state compressed at a high compression ratio, which reduces processing variation and makes it possible to increase the perpendicularity of the cut surface by the Thomson blade on both the front and back sides of the material.

Note that although specific examples of the technology included in the scope of the claims are disclosed in this specification and drawings, the technology described in the claims is not limited to these specific examples, but includes various modifications and variations of the specific examples, as well as parts of the specific examples taken separately.

REFERENCE SIGNS LIST 10 Thomson die 11 Support plate 12 Positioning projection 13 Thomson blade 14 Extrusion member 13H, 14H, 15 Through hole 16 Back surface groove 90 Material 91 Product

Claims (9)

a product receiving section for cutting a part of the material and receiving it as a product;
an air passage including a groove or a through hole that communicates with the inside and outside of the product receiving portion and exhausts air within the product receiving portion to the outside;
a positioning protrusion protruding from a support plate supporting the Thomson blade, for positioning the material in a direction parallel to the support plate, and for being pressed by a press machine together with the material to be compressed and deformed;
The positioning projection has a compressive rigidity higher than that of the material. a product receiving section for cutting a part of the material and receiving it as a product;
an air passage including a groove or a through hole that communicates with the inside and outside of the product receiving portion and exhausts air within the product receiving portion to the outside;
The Thomson die has a positioning protrusion protruding from a support plate supporting the Thomson blade, for positioning the material in a direction parallel to the support plate, and for being pressed by a press machine together with the material to be compressed and deformed. The Thomson type according to claim 1 or 2, wherein the air passage includes a through hole that penetrates the positioning protrusion laterally. a product receiving section for cutting a part of the material and receiving it as a product;
an air passage including a groove or a through hole that communicates with the inside and outside of the product receiving portion and exhausts air from within the product receiving portion to the outside;
The Thomson type includes a gap formed between the lower platen of the press and the support plate, the gap being formed by providing a plurality of protrusions on the back surface of the support plate supporting the Thomson blade, opposite the side from which the Thomson blade protrudes, or by stacking spacers. A method for manufacturing a product by cutting a part of a material with a Thomson die, the method comprising the steps of: providing an air passage including a groove or a through hole communicating with the inside and outside of a product receiving section for receiving the product by cutting the material with the Thomson die while discharging air from within the product receiving section to the outside through the air passage;
A manufacturing method for a product in which a support plate supporting a Thomson blade is provided with a positioning protrusion which has a compressive rigidity higher than that of the material and which positions the material in a direction parallel to the support plate, and the positioning protrusion is compressively deformed together with the material. 6. A method for manufacturing a product as described in claim 5, wherein an extrusion member for extruding the product from the product receiving section is housed in the product receiving section, the compression rigidity of the extrusion member is made higher than that of the raw material, and a portion of the raw material is compressed and deformed before being forced into the product receiving section. 7. The method for manufacturing a product according to claim 6, wherein the extruded member is made thicker than the blade height of the Thomson blade of the Thomson type, and the material is compressed and deformed to a thickness equal to or smaller than the blade height before the extruded member is pressed by the material and becomes the same thickness as the blade height. A method for manufacturing a product, comprising the steps of: cutting a material with a Thomson die according to any one of claims 1 to 4 to manufacture a product. The method for manufacturing a product according to any one of claims 5 to 8, wherein the product is made of foamed resin.

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