Cutting die

Abstract

The utility model discloses a cutting die which comprises an upper die and a lower die which are located in the same vertical direction, the upper die is located above the lower die, the upper die comprises a punch, and the lower die comprises a knife edge. The punch comprises a punch head, a protruding block is arranged at one end of the punch head, the area of the protruding block is smaller than that of one end of the punch head, and a plurality of inclined faces are arranged on the outer wall of the punch head. A punching hole for the punch to penetrate through is formed in the knife edge, and the shape of the punching hole is the same as that of the punch. According to the cutting die, the protruding block is arranged at one end of the punch head of the punch in the upper die, the inclined faces are arranged on the outer wall of the punch head, effective matching between the punch and the insert can be guaranteed, the position of the head of the punch can be fixed after the weak position of the insert is broken, and therefore cutting of the improved punch is more stable. The service life of the punch and the service life of the knife edge are greatly prolonged, and the scrap jumping phenomenon generated when small waste materials are cut can be well improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold equipment, and particularly relates to a cutting mold. Background Art

[0002] During product production and assembly, parts need to be cut. Currently, the punches of common cutting dies are of a relatively regular shape. When the space at the product to be cut is small, the punch block is positioned to avoid damaging the product. This weakens the wall thickness at the cutting point. When the weak area of ​​the punch block is damaged, the punch head is prone to deflection. This deflection can cause the punch to collide with the lower blade, causing severe wear on the lower blade, resulting in poor product cutting and reduced part life. Furthermore, the working surface of existing punch heads is only a single flat surface, which can easily cause chipping (waste being carried into the die) when cutting smaller scraps. Utility Model Content

[0003] In view of this, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a cutting die, which can make cutting more stable and improve the chip jumping phenomenon caused when cutting smaller waste materials.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A cutting die comprises an upper die and a lower die located in the same vertical direction, the upper die being located above the lower die, the upper die comprising a punch, and the lower die comprising a cutting edge; the punch comprising a punch head, one end of the punch head being provided with a bump, the area of ​​the bump being smaller than the area of ​​one end of the punch head, and the outer wall of the punch head having a plurality of inclined surfaces; the cutting edge having a punching hole for the punch head to pass through, the shape of the punching hole being the same as that of the punch head.

[0006] The punch of the utility model comprises a punch head, a punch rod and a connecting portion, one end of the connecting portion is connected to the punch rod, and the other end of the connecting portion is connected to the punch head.

[0007] According to a preferred embodiment of the present invention, the center of the bump and the center of the punch are located on the same straight line, and the thickness of the bump is 0.03 to 0.08 mm.

[0008] According to a preferred embodiment of the present invention, the ratio of the area of ​​the side of the bump connected to the punch to the area of ​​the end of the punch close to the bump is 0.3-0.4:1.

[0009] According to a preferred embodiment of the present invention, the outer wall of the punch includes a first side surface, a second side surface, a third side surface and a fourth side surface, and the first side surface, the second side surface, the third side surface and the fourth side surface are all inclined surfaces.

[0010] According to a preferred embodiment of the present invention, the outer wall of the punch further includes a fifth side, a sixth side, a seventh side and an eighth side, the fifth side is parallel to the eighth side, and the sixth side and the seventh side are both perpendicular to the fifth side.

[0011] According to a preferred embodiment of the present invention, the connection between the first side surface and the second side surface is a rounded transition, one side of the third side surface is connected to one side of the fourth side surface, and the other side of the third side surface is connected to one side of the seventh side surface; the connection between the first side surface and the fifth side surface is a rounded transition, the connection between the fifth side surface and the sixth side surface is a rounded transition, the connection between the sixth side surface and the fourth side surface is a rounded transition, and the connection between the seventh side surface and the eighth side surface is a rounded transition.

[0012] According to a preferred embodiment of the present invention, the first side surface is inclined outward and downward from a side close to the fifth side surface, the second side surface is inclined outward and upward from a side close to the eighth side surface, and the horizontal distance from the connection between the first side surface and the second side surface to the seventh side surface is greater than the width of the eighth side surface.

[0013] According to a preferred embodiment of the present invention, the third side surface is tilted outward and upward from a side close to the seventh side surface, and the fourth side surface is tilted inward and downward from a side close to the sixth side surface; a slot is formed between the third side surface and the fourth side surface.

[0014] In some embodiments of the present invention, the upper die further includes a protective sleeve and an insert block, which are interconnected. The protective sleeve is used to protect the punch, and the entire punch can pass through the protective sleeve, and the punch head can pass through the insert block. The insert block includes an insert block body and an extension at its bottom. The insert block has a through hole extending through its height, and the shape of the through hole is the same as that of the punch head. The thickness of the extension corresponding to the eighth side surface of the punch head is 0.05 to 0.15 mm. The design of the punch head ensures effective cooperation between the punch and the insert block. Because the through hole in the insert block is configured to correspond to the shape of the punch head, the slot on the punch head can interlock with the corresponding position of the extension, thereby ensuring the stability of the punch. In addition, because the horizontal distance from the junction of the first and second side surfaces to the seventh side surface is greater than the width of the eighth side surface, this arrangement ensures that even if the weak point of the insert block (i.e., the side of the extension corresponding to the eighth side surface of the punch head) breaks, the insert block can still secure the punch head and prevent it from being dislodged from the through hole in the insert block.

[0015] According to a preferred embodiment of the present invention, the upper mold further includes a first fixing part and a second fixing part from top to bottom, an elastic member is arranged between the bottom of the first fixing part and the top of the second fixing part, and there is a gap between the first fixing part and the second fixing part; the punch is fixedly arranged in the middle of the first fixing part, and the punch passes through the thickness direction of the second fixing part.

[0016] According to a preferred embodiment of the present invention, the lower mold also includes a third fixing part and a base, the third fixing part is arranged toward the second fixing part, the third fixing part is provided with a first through groove running through its thickness direction, and the cutting edge is located in the first through groove; the cutting edge includes a first boss located at the top, the first boss has the punching hole, and the punching hole runs through the thickness direction of the first boss.

[0017] Compared with the prior art, the benefits of the present invention are as follows: the cutting die of the present invention provides a protrusion at one end of the punch of the upper die and provides multiple inclined surfaces on the outer wall of the punch, so that the shape of the end face of the punch close to the lower die is irregular, which can ensure the effective cooperation between the punch and the input block, and can also fix the position of the punch head after the weak part of the input block is broken, so that the cutting of the improved punch is more stable, the service life of the punch and the blade is greatly increased, and the chip jumping phenomenon caused by cutting smaller waste materials can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the cutting mold in the embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the cutting mold in the embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the punch, the protective cover and the insert block in the embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the block in the embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the punch in the embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the punch in the embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of the three-dimensional structure of the fifth fixing plate and the components arranged on the fifth fixing plate in an embodiment of the present utility model;

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the sixth fixing plate and the components arranged on the sixth fixing plate in an embodiment of the present utility model;

[0027] Figure 9 for Figure 8 Schematic diagram of the three-dimensional structure after the cover plate, extension plate and a pressing block are hidden;

[0028] Figure 10 This is a schematic diagram of the three-dimensional structure of the blade, the first clamping block and the second clamping block in an embodiment of the present utility model;

[0029] Wherein, the accompanying drawings are marked as follows:

[0030] Upper mold-100,

[0031] Punch 1, punch head 11, first side 111, second side 112, third side 113, fourth side 114, fifth side 115, sixth side 116, seventh side 117, eighth side 118, punch rod 12, connecting portion 13, protrusion 14, first fixing plate 21, second fixing plate 22, third fixing plate 23, fourth fixing plate 31, fifth fixing plate 32, first groove 321, second boss 322, positioning pin 323, positioning rod 324, elastic member 4, protective sleeve 5, insert block 6, insert block body 61, extension portion 62, through hole 63;

[0032] Lower mold -200,

[0033] Sixth fixing plate 71, second groove 711, third boss 712, fourth boss 713, fifth boss 714, second through-slot 715, third through-slot 716, seventh fixing plate 72, pressing block body 731, pressing rod 732, first positioning hole 7321, cover plate 74, second positioning hole 741, extension plate 75, notch 751, base 8, blade 91, first boss 911, punch hole 9111, first clamping block 92, second clamping block 93;

[0034] Guide column -300. DETAILED DESCRIPTION

[0035] In order to help those skilled in the art better understand the technical solutions of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0036] Reference Figures 1 to 10 A cutting mold of this embodiment includes an upper mold 100, a lower mold 200 and multiple guide pillars 300. The upper mold 100 is located above the lower mold 200. The upper mold 100 and the lower mold 200 are located in the same vertical direction and the upper mold 100 is slidably connected to the guide pillars 300. The lower mold 200 is fixedly connected to one end of the guide pillars 300. The upper mold 100 can move along the length direction of the guide pillars 300 toward or away from the lower mold 200.

[0037] Furthermore, if Figure 1 and Figure 2 As shown, the upper mold 100 includes a first fixing portion, an elastic member 4, and a second fixing portion from top to bottom. The first fixing portion includes a first fixing plate 21, a second fixing plate 22, and a third fixing plate 23 fixedly connected from top to bottom. The second fixing portion includes a fourth fixing plate 31 and a fifth fixing plate 32 fixedly connected from top to bottom. A plurality of elastic members 4 are provided between the bottom of the third fixing plate 23 and the top of the fourth fixing plate 31. When the cutting mold is in a non-working state, the elastic members 4 are in a compressed state, so that there is a gap between the third fixing plate 23 and the fourth fixing plate 31. When the first fixing portion is pushed downward, the elastic member 4 is further compressed, so that the gap between the bottom of the third fixing plate 23 and the top of the fourth fixing plate 31 gradually disappears until the third fixing plate 23 and the fourth fixing plate 31 are in contact with each other, thereby causing the entire upper mold 100 to gradually move downward toward the lower mold 200 for stamping and cutting. The elastic member 4 in this embodiment is preferably a spring.

[0038] Furthermore, the punch 1 is fixedly arranged in the middle of the first fixing part and the punch 1 passes through the thickness direction of the second fixing part. Specifically, the punch 1 includes a punch 11, a punch rod 12 and a connecting part 13, one end of the connecting part 13 is connected to the punch rod 12, the other end of the connecting part 13 is connected to the punch 11, and one end of the punch rod 12 is fixedly connected to the third fixing plate 23. A protrusion 14 is provided at the end of the punch 11 away from the connecting part 13, the center of the protrusion 14 is located on the same straight line as the center of the punch 11, and the ratio of the area of ​​the side where the protrusion 14 is connected to the punch 11 to the area of ​​the end of the punch 11 close to the protrusion 14 is 0.3 to 0.4:1, preferably 0.3:1; in addition, the thickness of the protrusion 14 is 0.03 to 0.08 mm, preferably 0.05 mm. The provision of the protrusion 14 can well improve the chip jumping phenomenon generated when cutting smaller scraps.

[0039] like Figure 5 and Figure 6 As shown, the outer wall of the punch 11 includes a first side 111, a second side 112, a third side 113, a fourth side 114, a fifth side 115, a sixth side 116, a seventh side 117 and an eighth side 118, the fifth side 115 is parallel to the eighth side 118, and the sixth side 116 and the seventh side 117 are both perpendicular to the fifth side 115; the connection between the first side 111 and the second side 112 is a rounded transition, one side of the third side 113 is connected to one side of the fourth side 114 and a slot is formed between the third side 113 and the fourth side 114, and the other side of the third side 113 is connected to one side of the seventh side 117; the connection between the first side 111 and the fifth side 115 is a rounded transition, the connection between the fifth side 115 and the sixth side 116 is a rounded transition, the connection between the sixth side 116 and the fourth side 114 is a rounded transition, and the connection between the seventh side 117 and the eighth side 118 is a rounded transition. Among them, the first side surface 111, the second side surface 112, the third side surface 113 and the fourth side surface 114 are all inclined surfaces. The first side surface 111 is inclined outward and downward from the side close to the fifth side surface 115, the second side surface 112 is inclined outward and upward from the side close to the eighth side surface 118, the third side surface 113 is inclined outward and upward from the side close to the seventh side surface 117, and the fourth side surface 114 is inclined inward and downward from the side close to the sixth side surface 116; and the horizontal distance from the connection between the first side surface 111 and the second side surface 112 to the seventh side surface 117 is greater than the width of the eighth side surface 118.

[0040] Furthermore, if Figure 3 and Figure 4As shown, the upper die 100 also includes a protective cover 5 and an insertion block 6 that are interconnected. The protective cover 5 is used to protect the punch 1. The entire punch 1 can pass through the protective cover 5, and the punch 11 of the punch 1 can pass through the insertion block 6. The protective cover 5 and the insertion block 6 are both arranged in the middle of the fifth fixed plate 32. The top surface of the protective cover 5 is flush with the top surface of the fifth fixed plate 32. The insertion block 6 includes an insertion block body 61 and an extension portion 62 located at the bottom thereof. The bottom surface of the insertion block body 61 is flush with the bottom surface of the fifth fixed plate 32. A through hole 63 is provided inside the entire insertion block 6 that runs through the height direction thereof. The shape of the through hole 63 is the same as that of the punch 11, and the thickness of the side of the extension portion 62 corresponding to the eighth side surface 118 of the punch 11 is 0.05 to 0.15 mm. This thickness is relatively thin, and breakage is likely to occur here. The outer wall of the punch 11 of the utility model is a special-shaped surface setting, which is punched through. The design of the head 11 can enable effective cooperation between the punch 1 and the insert 6. Since the through hole 63 in the insert 6 is set to correspond to the shape of the punch 11, the groove on the punch 11 can be engaged with the position corresponding to the extension 62; furthermore, since the horizontal distance from the connection between the first side 111 and the second side 112 to the seventh side 117 is greater than the width of the eighth side 118, such a comprehensive setting can ensure that even if the weak point of the insert 6 (that is, the side of the extension 62 corresponding to the eighth side 118 of the punch 11) is broken, the insert 6 can fix the punch 11 to prevent the punch 11 from detaching from the through hole 63 of the insert 6.

[0041] In addition, a first groove 321 is defined on the bottom surface of the fifth fixing plate 32 (the side closest to the lower mold 200). The first groove 321 is located in the middle of the fifth fixing plate 32, extending from the bottom surface to the top surface of the fifth fixing plate 32. The depth of the first groove 321 is less than the thickness of the fifth fixing plate 32. Two sets of second boss units are located within the first groove 321. Each second boss unit includes six spaced-apart second bosses 322. The second bosses 322 in the two second boss units are arranged in a one-to-one correspondence. Each second boss 322 is fixedly provided with a positioning pin 323, one end of which extends downward from the bottom surface of the second boss 322. Furthermore, a plurality of positioning rods 324 are fixedly provided on the side of the two second boss units facing away from each other. In this embodiment, five positioning rods 324 are evenly spaced on one side of each second boss unit. Both the positioning pins 323 and the positioning rods 324 are used to cooperate with the lower mold 200 to position the product to be cut.

[0042] Furthermore, the lower mold 200 includes, from top to bottom, a third fixed portion and a base 8 that are fixedly connected. The third fixed portion is arranged toward the second fixed portion. The third fixed portion includes, from top to bottom, a sixth fixed plate 71 and a seventh fixed plate 72 that are fixedly connected. The middle portion of the sixth fixed plate 71 is provided with a first through groove that runs through the thickness direction thereof. The lower mold 200 also includes a knife edge 91 located in the first through groove, a first clamping block 92, and a second clamping block 93, as shown in FIG. Figures 8 to 10 As shown, the first clamping block 92 and the second clamping block 93 cooperate to clamp the blade 91. The blade 91 includes a first boss 911 at the top. The first boss 911 is provided with a punch hole 9111 extending through the thickness of the blade. The shape of the punch hole 9111 is the same as that of the punch 11. The punch hole 9111 is used to pass through the punch 11. The punch hole 9111 is aligned with the punch 11 of the punch 1 and the through hole 63 of the extension portion 62 to ensure cutting accuracy.

[0043] Specifically, if Figure 8 and Figure 9 As shown, the top surface of the sixth fixing plate 71 (the side closest to the upper mold 100) is provided with a second groove 711. The second groove 711 is located in the middle of the sixth fixing plate 71, extending from the top to the bottom surface of the sixth fixing plate 71. The depth of the second groove 711 is less than the thickness of the sixth fixing plate 71. A third boss 712 and a fourth boss 713 are fixedly disposed in the middle of the second groove 711. The top surface of the third boss 712 is fixedly connected to the bottom surface of the fourth boss 713. The width of the third boss 712 is greater than the width of the fourth boss 713. The length of the third boss 712 is equal to that of the fourth boss 713 and equal to the length of the second groove 711. The width of the third boss 712 is less than the width of the second groove 711. Multiple fourth bosses 713 are spaced apart on the top surface of the fourth boss 713. The length of the fifth boss 714 is perpendicular to the length of the fourth boss 713. The fifth boss 714 is used to place the product to be cut when the punch 1 is downwardly cutting.

[0044] Furthermore, a plurality of second through grooves 715 are spaced apart on both sides of the second groove 711 and pass through the thickness direction of the sixth fixed plate 71, and a plurality of third through grooves 716 are spaced apart on both sides of the third boss 712 and pass through the thickness direction of the sixth fixed plate 71. The third through grooves 716 are located within the range of the second groove 711 and the depth of the second through grooves 715 is greater than the depth of the third through grooves 716. The width of the second through grooves 715 is equal to the width of the third through grooves 716. The third through grooves 716 and the second through grooves 715 are arranged one-to-one in correspondence and a corresponding third through groove 716 is connected to the second through groove 715.

[0045] In addition, the lower mold 200 also includes a pressure block arranged corresponding to each second through groove 715 and the third through groove 716, and each pressure block includes a fixedly connected pressure block body 731 and a pressure rod 732, the pressure block body 731 is perpendicular to the pressure rod 732, and the pressure rod 732 is fixedly arranged on the top of the pressure block body 731, and the side of the pressure rod 732 close to the fifth boss 714 is flush with the side of the pressure block body 731 close to the fifth boss 714, and the top surface of the pressure rod 732 is higher than the top surface of the pressure block body 731; the length of the pressure rod 732 is greater than the width of the pressure block body 731 and greater than the width of the third through groove 716, and the width of the pressure rod 732 is less than the length of the pressure block body 731, so that the two ends of the pressure rod 732 extend outward from the two sides of the pressure block body 731 respectively; and the height of the pressure block is less than or equal to the depth difference between the second through groove 715 and the third through groove 716. The corresponding second through-slot 715 and third through-slot 716 are used to accommodate the pressing block body 731. When the pressing block body 731 is accommodated in the second through-slot 715 and the third through-slot 716, the two ends of the pressing rod 732 are located on the bottom surface of the second groove 711. This arrangement can limit the pressing block and ensure that it does not fall. The pressing rods 732 on both sides of the third boss 712 are used to place the product to be cut. When the product is just delivered, the top surfaces of the multiple pressing rods 732 on both sides are located above the top surface of the fifth boss 714. In other words, the newly delivered product is placed on the top surface of the pressing rod 732 and does not yet come into contact with the top surface of the fifth boss 714. In this embodiment, the product to be cut is part of a USB interface, and each part has multiple mounting holes at both ends. Therefore, to ensure effective positioning of the product to be cut, first positioning holes 7321 are provided on some of the pressure rods 732 on each side of the third boss 712. The first positioning holes 7321 on the pressure rods 732 on both sides are arranged in a one-to-one correspondence, thus avoiding the need for excessive first positioning holes 7321 and the resulting increased complexity of the process. In addition, the positioning pins 323 of the upper mold 100 are also arranged in a one-to-one correspondence with the first positioning holes 7321. The positioning pins 323 are used to insert into the corresponding first positioning holes 7321 to position and secure the product.

[0046] Furthermore, if Figure 8As shown, a cover plate 74 is fixedly installed on both sides of the second groove 711. The bottom surface of the cover plate 74 is fixedly connected to the top surface of the sixth fixed plate 71. Each cover plate 74 is used to cover all the second through-slots 715 on one side of the second groove 711. Specifically, each cover plate 74 is provided with a plurality of second positioning holes 741 at intervals. The second positioning holes 741 are arranged in a one-to-one correspondence with the second through-slots 715, and the area of ​​the second positioning holes 741 is smaller than the area of ​​the top surface of the pressing block body 731, ensuring that the top surface of the pressing block body 731 can completely cover the bottom surface of the second positioning holes 741. In addition, the second through-slots 715 are arranged in a one-to-one correspondence with the positioning rods 324 of the upper mold 100. When the upper mold 100 moves downward and gradually approaches the lower mold 200, it will drive the positioning rod 324 downward through the first positioning hole 7321 to contact the pressing block body 731 of the pressing block and push the pressing block downward, thereby driving the product located on the pressing rod 732 to move downward as a whole until the bottom surface of the product contacts the top surface of the fifth boss 714.

[0047] Each cover plate 74 is provided with an extension plate 75 on the side adjacent to the pressure block. The top surface of the extension plate 75 is flush with the top surface of the cover plate 74, and the height of the extension plate 75 is less than that of the cover plate 74. The extension plate 75 is located above the third through slot 716. Each extension plate 75 is provided with a plurality of notches 751 spaced apart. Each notch 751 on the extension plate 75 corresponds one-to-one with the first positioning hole 7321 on the corresponding side. The notches 751 are provided to avoid the positioning pins 323, ensuring that the positioning pins 323 can be inserted downward into the corresponding first positioning holes 7321 without obstruction. Furthermore, a flow channel for product transport is formed between the bottom surface of the extension plate 75, the side surface of the cover plate 74, and the top surface of the multiple pressure rods 732 on the corresponding side. The product can also be positioned between the adjacent sides of the two cover plates 74 to prevent the product from shifting left or right during transport, resulting in inaccurate positioning.

[0048] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cutting die, characterized in that: It includes an upper die and a lower die located in the same vertical direction, the upper die is located above the lower die, the upper die includes a punch, and the lower die includes a cutting edge; the punch includes a punch head, a protrusion is provided at one end of the punch head, the area of ​​the protrusion is smaller than the area of ​​one end of the punch head, and the outer wall of the punch head has multiple inclined surfaces; the cutting edge has a punching hole for the punch head to pass through, and the shape of the punching hole is the same as that of the punch head.

2. The cutting die according to claim 1, characterized in that: The center of the bump and the center of the punch are located on the same straight line, and the thickness of the bump is 0.03-0.08 mm.

3. The cutting die according to claim 2, characterized in that: The ratio of the area of ​​the side of the bump connected to the punch to the area of ​​the end of the punch close to the bump is 0.3-0.4:

1.

4. The cutting die according to claim 1, wherein: The outer wall of the punch includes a first side surface, a second side surface, a third side surface and a fourth side surface, and the first side surface, the second side surface, the third side surface and the fourth side surface are all inclined surfaces.

5. The cutting die according to claim 4, characterized in that: The outer wall of the punch further includes a fifth side surface, a sixth side surface, a seventh side surface and an eighth side surface. The fifth side surface is parallel to the eighth side surface, and the sixth side surface and the seventh side surface are both perpendicular to the fifth side surface.

6. The cutting die according to claim 5, characterized in that: The connection between the first side surface and the second side surface is a rounded transition, one side of the third side surface is connected to one side of the fourth side surface, and the other side of the third side surface is connected to one side of the seventh side surface; the connection between the first side surface and the fifth side surface is a rounded transition, the connection between the fifth side surface and the sixth side surface is a rounded transition, the connection between the sixth side surface and the fourth side surface is a rounded transition, and the connection between the seventh side surface and the eighth side surface is a rounded transition.

7. The cutting die according to claim 6, characterized in that: The first side surface is tilted outward and downward from a side close to the fifth side surface, and the second side surface is tilted outward and upward from a side close to the eighth side surface. The horizontal distance from the connection between the first side surface and the second side surface to the seventh side surface is greater than the width of the eighth side surface.

8. The cutting die according to claim 6, characterized in that: The third side surface is tilted outward and upward from a side close to the seventh side surface, and the fourth side surface is tilted inward and downward from a side close to the sixth side surface; a slot is formed between the third side surface and the fourth side surface.

9. The cutting die according to claim 5, characterized in that: The upper mold also includes a first fixing part and a second fixing part from top to bottom, an elastic part is arranged between the bottom of the first fixing part and the top of the second fixing part, and there is a gap between the first fixing part and the second fixing part; the punch is fixedly arranged in the middle of the first fixing part, and the punch passes through the thickness direction of the second fixing part.

10. The cutting die according to claim 9, characterized in that: The lower mold also includes a third fixing part and a base. The third fixing part is arranged toward the second fixing part. The third fixing part is provided with a first through groove running through the thickness direction thereof, and the blade is located in the first through groove; the blade includes a first boss located at the top, the first boss has the punching hole, and the punching hole runs through the thickness direction of the first boss.

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