Stamping die and stamping equipment

Abstract

The utility model relates to a stamping die and stamping equipment. The stamping die comprises an upper die assembly and a lower die assembly, wherein the upper die assembly comprises an upper die plate and an upper pressing block; the upper pressing block is arranged on the inner side of the upper die plate and provided with a first protruding part. The lower die assembly comprises a lower die plate and a lower material pressing block; the lower material pressing block is arranged on the inner side of the lower die plate, a concave part is arranged on the side, close to the upper material pressing block, of the lower material pressing block, the first protruding part is matched with the concave part, a second protruding part is arranged on the side, close to the lower material pressing block, of the lower die plate, and the second protruding part faces the upper die plate. The elastic assembly is arranged above the lower die plate, the elastic assembly is connected with the lower die plate, and the elastic assembly is used for enabling the lower die assembly to be higher than the punch before die opening. According to the stamping die, a material can be reversely stretched and pressed firstly, so that the problem that wrinkles are generated on the edge of the stainless steel material when the stainless steel material is stamped is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping and forming, in particular to a stamping die and stamping equipment. Background Art

[0002] Battery casings are typically welded together from a stretched part and a cover plate. With increasing demands for lightweighting and space utilization, coupled with increasing battery casing capacity and thinner materials, the requirements for battery stretching in production are becoming increasingly stringent. Some materials have smooth surfaces, but insufficient pressure at the edges can lead to excessive tangential pressure at the edges during stretching, resulting in uneven wrinkles along the edges and compromising battery casing assembly. Utility Model Content

[0003] In view of this, the utility model provides a stamping die and a stamping device, wherein the stamping die can reduce the problem of wrinkles on the edge of the stainless steel material during stamping.

[0004] The utility model provides a stamping die, comprising:

[0005] Upper mold assembly, the upper mold assembly includes: an upper mold plate and an upper pressing block;

[0006] The upper pressing block is arranged on the inner side of the upper template, and the upper pressing block is provided with a first protrusion;

[0007] A lower die assembly, comprising a lower die plate and a lower pressing block;

[0008] The lower pressing block is arranged on the inner side of the lower template, a recess is provided on a side of the lower pressing block close to the upper pressing block, the first protrusion is adapted to the recess, and a second protrusion is provided on a side of the lower template close to the lower pressing block, the second protrusion faces the upper template;

[0009] An elastic component is arranged above the lower template, the elastic component is connected to the lower template, and the elastic component is used to make the height of the lower template component higher than the punch before the mold is opened.

[0010] Furthermore, the first protrusion extends in a direction close to the lower template, a bending portion is provided on a side of the first protrusion close to the upper template, and an arc chamfer is provided on a side of the first protrusion away from the upper template.

[0011] Furthermore, a side of the second protrusion close to the lower pressing block is provided with an arc chamfer, and a side of the second protrusion away from the lower pressing block is provided with an inclination.

[0012] Furthermore, a side of the upper template close to the upper pressing block and a side of the upper pressing block close to the upper template are both located on the second protrusion, and a height of the lower pressing block is smaller than a height of the lower template.

[0013] Furthermore, the elastic component includes: an elastic member, a connecting plate, and a support rod; the elastic member is arranged at the bottom of the connecting plate, one end of the support rod is connected to the connecting plate, and the other end of the support rod is connected to the lower template.

[0014] Furthermore, it also includes: a support seat; the support seat has a receiving cavity, the elastic member and the connecting plate are both arranged in the receiving cavity, and the support rod passes through the surface of the support seat facing the lower template.

[0015] Furthermore, the lower mold assembly also includes: a floating material backing plate, a lower pad, and a punch; the floating material backing plate and the lower pad are arranged in sequence along the first direction, wherein the lower pad is arranged on the support seat, the floating material backing plate is connected to the lower mold plate, the support rod passes through the lower pad and is connected to the floating material backing plate, and the punch is arranged on the lower pad.

[0016] Furthermore, the upper die assembly further comprises: an upper backing plate, an upper die seat;

[0017] The upper die base, the upper pad, and the upper die plate are sequentially arranged along a first direction, and the axes of the upper die base, the upper pad, and the upper die plate are collinear.

[0018] Furthermore, the stamping die further comprises: an inner stripping plate and a reset part;

[0019] The inner stripping plate is arranged on the inner periphery of the upper pressing block, the reset member passes through the upper pad, one end of the reset member is connected to the inner stripping plate, and the other end of the reset member is connected to the upper die seat.

[0020] The utility model also provides a stamping device, comprising the stamping die.

[0021] The stamping die in the utility model includes an upper die assembly, a lower die assembly and an elastic assembly. When the stamping die is opened, the plate is placed on the lower die, and the lower die assembly is driven by the elastic assembly to move in the direction close to the upper die assembly. When the upper die assembly abuts against the lower die assembly, the first protrusion abuts against the recessed portion, so that the edge of the plate can be stretched in the opposite direction to a height first, so that the outer periphery of the plate is compressed. Then, the second protrusion abuts against the position where the upper template and the upper pressing block are connected, so that the outer periphery of the plate can be bent again, so that the plate forms multiple bends to increase the compression force of the plate. During the stretching process, the outer ring material is in a squeezed and tightened state, so that it is not easy to wrinkle during the stretching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the implementation. Obviously, the drawings described below are some implementations of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 Schematic diagram of the exploded cross-section of the upper die assembly and the lower die assembly in the stamping die provided by the embodiment of the present utility model;

[0024] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0025] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0026] Figure 4 A schematic cross-sectional view of a portion of the lower die assembly structure of a stamping die provided by an embodiment of the present invention;

[0027] Figure 5 for Figure 4 A partial enlarged view of point C in the middle;

[0028] Figure 6 A schematic cross-sectional view of the upper die assembly and lower die assembly of a stamping die provided in an embodiment of the present invention;

[0029] Figure 7 A schematic cross-sectional view of a stamping die (when the die is opened) provided in an embodiment of the present utility model;

[0030] Figure 8 A schematic cross-sectional view of a stamping die (when the die is closed) provided in an embodiment of the present invention;

[0031] Figure 9 A schematic structural diagram of the stamping equipment provided in an embodiment of the present utility model.

[0032] Description of reference numerals:

[0033] 100-stamping die; 10-upper die assembly; 11-upper template; 12-upper pressing block; 121-first protrusion; 13-upper pad; 14-upper die base; 20-lower die assembly; 21-lower template; 211-second protrusion; 22-lower pressing block; 221-recessed portion; 23-floating material backing plate; 24-lower pad; 30-elastic assembly; 31-elastic member; 32-connecting plate; 33-support rod; 40-punch; 50-support seat; 51-accommodating cavity; 60-inner stripping plate; 70-resetting member; 200-stamping equipment. DETAILED DESCRIPTION

[0034] 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 creative work are within the scope of protection of the present invention.

[0035] The terms "first," "second," and so on, in the specification and claims of this utility model and the accompanying drawings are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0036] References herein to "embodiments" or "implementations" mean that a particular feature, structure, or characteristic described in connection with the embodiments or implementations may be included in at least one embodiment of the present invention. The appearance of such phrases in various places in the specification does not necessarily refer to the same embodiment, nor do they constitute independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] Battery cases are typically welded together from a stretched part and a cover plate. With increasing demands for lightweighting and space utilization, and the increasing capacity of battery cases requiring thinner materials, the requirements for battery stretching in production are becoming increasingly stringent. Due to the smooth surface of stainless steel, insufficient pressure on the edges results in excessive tangential pressure on the edges during stretching, creating uneven wrinkles along the edges and hindering assembly of the battery case. Stainless steel also undergoes work hardening during the stretching process, making it more susceptible to breakage and cracking during subsequent stretching, resulting in high production costs.

[0038] In view of this, the present embodiment provides a stamping die 100 and a stamping device 200 . The stamping die 100 can reduce the problem of wrinkles on the edges of stainless steel materials during stamping.

[0039] See also Figures 1 to 3 The present invention provides a stamping die 100, comprising: an upper die assembly 10, wherein the upper die assembly 10 comprises: an upper die plate 11, an upper pressing block 12;

[0040] The upper pressing block 12 is arranged on the inner side of the upper template 11, and the upper pressing block 12 is provided with a first protrusion 121;

[0041] The lower mold assembly 20 includes a lower mold plate 21 and a lower pressing block 22;

[0042] The lower pressing block 22 is arranged on the inner side of the lower template 21, and a recessed portion 221 is provided on the side of the lower pressing block 22 close to the upper pressing block 12, and the first protrusion 121 is adapted to the recessed portion 221. A second protrusion 211 is provided on the side of the lower template 21 close to the lower pressing block 22, and the second protrusion 211 faces the upper template 11;

[0043] The elastic component 30 is arranged above the lower mold plate 21 and is connected to the lower mold plate 21. The elastic component 30 is used to make the height of the lower mold component 20 higher than the punch 40 before the mold is opened.

[0044] The stamping die 100 in the present invention includes an upper die assembly 10, a lower die assembly 20 and an elastic assembly 30. When the stamping die 100 is in the mold opening, the plate is placed on the lower die, and the lower die assembly 20 is driven by the elastic assembly 30 to move toward the direction close to the upper die assembly 10. When the upper die assembly 10 is in contact with the lower die assembly 20, the first protrusion 121 abuts against the recessed portion 221, so that the edge of the plate can be stretched in the opposite direction to a height so that the outer periphery of the plate is compressed. Then, the second protrusion 211 abuts against the position where the upper template 11 and the upper pressing block 12 are connected, so that the outer periphery of the plate can be bent again, so that the plate forms multiple bends to increase the clamping force of the plate. During the stretching process, the outer ring material is in a squeezed and tightened state, so that it is not easy to wrinkle during the stretching process.

[0045] It can be understood that the upper pressing block 12 is sleeved in the upper template 11, and the lower pressing block 22 is sleeved in the lower template 21. By providing a first protrusion 121 on the side of the upper pressing block 12 facing the lower template 21, a recessed portion 221 and a second protrusion 211 are provided on the lower pressing block 22, and the second protrusion 211 is provided facing the upper template 11. In this way, the elastic component 30 can be squeezed downward by the upper mold assembly 10 during the downward movement during stamping. At this time, the first protrusion 121 can be pressed against the recessed portion 221. With the cooperation of the recessed portion 221, the second protrusion 211 can abut against the upper template 11. When stamping, the plate is bent and squeezed by the first protrusion 121 and the second protrusion 211 to form two bends. Compared with the traditional stamping method, the stamping die 100 in this scheme can have a larger contact area with the plate. At the same time, the two bends can also make each section of the bent plate have a certain limiting effect between the two end bends when being stretched, so that the edge of the plate can be tightened, thereby reducing wrinkling on the edge of the plate.

[0046] See also Figures 2 to 4 In some embodiments, the first protrusion 121 extends toward the lower template 21, a bending portion is provided on a side of the first protrusion 121 close to the upper template 11, and an arc chamfer is provided on a side of the first protrusion 121 away from the upper template 11.

[0047] It can be understood that the first protrusion 121 extends in the direction close to the lower template 21, and a bending portion is provided on the side of the first protrusion 121 close to the upper template 11. The bending portion is to enable the first protrusion 121 to protrude from the upper pressing plate to form the first protrusion 121. The first protrusion 121 is provided with an arc chamfer on the side away from the upper module. The arc chamfer can form a part with an arc transition on the plate when the upper pressing block 12 and the lower pressing block 22 are matched, thereby avoiding damage to the plate caused by the upper pressing block 12 and the lower pressing block 22 breaking the plate after matching during the stamping process.

[0048] See also Figures 2 to 4 In some embodiments, a side of the second protrusion 211 close to the lower pressing block 22 is provided with an arc chamfer, and a side of the second protrusion 211 away from the lower pressing block 22 is provided with an inclination.

[0049] It can be understood that the second protrusion 211 is provided with an arc chamfer on the side close to the lower pressing block 22. The arc chamfer of the second protrusion 211 can also enable the upper pressing block 12 and the lower pressing block 22 to form a part with an arc transition on the plate when they are matched, so as to avoid damage to the plate caused by the upper pressing block 12 and the lower pressing block 22 breaking the plate after matching during the stamping process. The second protrusion 211 is set to be inclined on the side away from the lower pressing block 22. The inclined setting can enable the material to be drawn and thinned relatively evenly, avoiding local rupture, which is conducive to further improving the forming effect and reducing the defective rate, thereby further improving production efficiency and reducing costs.

[0050] See also Figure 5 In some embodiments, the side of the upper template 11 close to the upper pressing block 12 and the side of the upper pressing block 12 close to the upper template 11 are both located on the second protrusion 211, and the height of the lower pressing block 22 is less than the height of the lower template 21.

[0051] It can be understood that the side of the upper template 11 close to the upper pressure block 12 and the side of the upper pressure block 12 close to the upper template 11 are both located on the second protrusion 211, that is, the second protrusion 211 abuts against the intersection of the upper pressure block 12 and the upper template 11 when it abuts against the upper mold assembly 10. In this way, when the second protrusion 211 abuts against the position where the upper pressure block 12 and the upper template 11 intersect during stamping, the second protrusion 211 can also correct the position of the upper pressure block 12 relative to the upper template 11, avoiding the position of the upper template 11 and the upper pressure block 12 from shifting during stamping, so that the stamping die 100 has higher precision during stamping.

[0052] See also Figure 6 In some embodiments, the elastic component 30 includes: an elastic member 31, a connecting plate 32, and a support rod 33; the elastic member 31 is arranged at the bottom of the connecting plate 32, one end of the support rod 33 is connected to the connecting plate 32, and the other end of the support rod 33 is connected to the lower template 21.

[0053] The cam 33 is provided with a plurality of support rods 33 on the top of the plate 32, and the support rods 33 are provided with a plurality of support rods 33 on the top of the plate 32. The support rods 33 are provided with a plurality of support rods 33 on the top of the plate 32, and the support rods 33 are provided with a plurality of support rods 33 on the top of the plate 32. The support rods 33 are provided with a plurality of support rods 33 on the top of the plate 32, and the support rods 33 are provided with a plurality of support rods 33 on the top of the plate 32. The support rods 33 are provided with a plurality of support rods 33 on the top of the plate 32, and the plurality of support rods 33 are provided with a plurality of support rods 33 on the top of the plate 32.

[0054] See also Figure 7 In some embodiments, the stamping die 100 further includes a support seat 50; the support seat 50 has a receiving cavity 51, the elastic member 31 and the connecting plate 32 are both arranged in the receiving cavity 51, and the support rod 33 passes through the surface of the support seat 50 facing the lower template 21.

[0055] It can be understood that the support seat 50 is used to support the lower die assembly 20. The support seat 50 can prevent the lower die assembly 20 from position displacement or shaking during the stamping process, and can reduce the vibration and impact force of the stamping die 100 during the stamping process, and can improve the accuracy of the stamping process.

[0056] It can be understood that the interior of the support base 50 is a accommodating chamber 51, which is mainly used to install the connecting plate 32 and the elastic member 31. In order to enable the support rod 33 to extend into the accommodating chamber 51, a hole is provided on the upper surface of the base, and the support rod 33 can extend into the accommodating chamber 51 through the hole. In this way, the support rod 33 can be connected to the connecting plate 32. One end of the elastic member 31 is set on the ground of the accommodating chamber 51, and the other end of the elastic member 31 is connected to the connecting plate 32. In this way, the elastic member 31 can play a supporting role.

[0057] See also Figure 8 In some embodiments, the lower mold assembly 20 further includes: a floating material backing plate 23, a lower pad 24, and a punch 40; the floating material backing plate 23 and the lower pad 24 are arranged in sequence along the first direction, wherein the lower pad 24 is arranged on the support seat 50, the floating material backing plate 23 is connected to the lower mold plate 21, the support rod 33 passes through the lower pad 24 and is connected to the floating material backing plate 23, and the punch 40 is arranged on the lower pad 24.

[0058] It can be understood that the support rod 33 is connected to the floating material back plate 23, and there is a certain gap between the floating material back plate 23 and the lower pad 24. Therefore, when stamping, the lower pad 24 and the floating material back plate 23 contact first to provide a certain buffering force for the lower mold assembly 20, and when the stamping is completed, the lower template 21 and the lower pressure block 22 will not directly contact the base and cause wear of the lower template 21 or the lower pressure block 22, thereby extending the service life of the equipment and the mold.

[0059] It can be understood that the punch 40 is arranged on the lower pad 24, and the punch 40 is arranged facing the upper die assembly 10. Due to the support of the elastic component 30, the height of the punch 40 is lower than the height of the upper die assembly 10. In this way, the upper die assembly 10 and the lower die assembly 20 can cooperate to press the plate during stamping, and then stamping is performed, so that the punch 40 can have a larger contact area with the plate during stamping to improve the accuracy of stamping.

[0060] See also Figure 8 In some embodiments, the upper mold assembly 10 further includes: an upper pad 13 and an upper mold base 14; the upper mold base 14, the upper pad 13, and the upper mold plate 11 are arranged in sequence along the first direction, and the axes of the upper mold base 14, the upper pad 13, and the upper mold plate 11 are collinear.

[0061] It can be understood that the upper die base 14, the upper pad 13 and the upper template 11 are arranged in sequence along the first direction, and the axis of the upper die base 14, the axis of the upper pad 13 and the axis of the upper template 11 are collinear, ensuring the integrity of the above-mentioned upper die base 14, the upper pad 13 and the upper template 11 during stamping, and also enhancing the overall rigidity of the mold, avoiding the problem of uneven mechanical stress distribution caused by offset or misalignment of the upper die assembly 10 during operation, so as to improve the stability of the die assembly.

[0062] See also Figure 8 In some embodiments, the stamping die 100 further includes: an inner stripping plate 60 and a reset member 70; the inner stripping plate 60 is arranged on the inner periphery of the upper pressing block 12, the reset member 70 passes through the upper pad 13, one end of the reset member 70 is connected to the inner stripping plate 60, and the other end of the reset member 70 is connected to the upper die base 14.

[0063] It is understandable that after the reset member 70 passes through the upper pad 13, one end of the reset member 70 is connected to the upper die assembly, and the other end of the reset member 70 is connected to the inner stripping plate 60. The inner stripping plate 60 is arranged on the inner periphery of the upper pressing block 12. The reset member 70 can make the inner stripping plate 60 move up and down within the inner periphery of the upper pressing block 12. In this way, after the stamping is completed, when the upper die assembly 10 is away from the lower die assembly 20, the reset member 70 can push the inner stripping plate 60 to reset, so as to remove the stamped sheet from the die and avoid the workpiece from sticking or getting stuck in the die. The position design of the inner stripping plate 60 makes it close to the inner side of the upper pressing block 12, ensuring uniform force during demoulding, improving the accuracy and efficiency of the demoulding operation, and reducing pauses and delays during the processing.

[0064] It can be understood that the inner stripping plate 60 can effectively reduce the mechanical stress on the mold and the surface damage of the workpiece through the precise resetting function of the resetting member 70 during demolding, and can also reduce the wear rate of the mold, thereby achieving the purpose of extending the service life of the mold and improving work efficiency.

[0065] After the product is formed in the mold cavity, when the mold is opened, the reset member 70 drives the inner stripping plate 60 to reset in the direction of the lower mold assembly 20 to facilitate the product to be separated from the mold cavity of the upper mold assembly 10.

[0066] Since the surface of stainless steel is smooth and the pressing force on the edge of the material is insufficient, the tangential pressure on the edge during the stretching process is too large, causing uneven wrinkles to form along the tangential direction of the edge of the product. Therefore, during the stretching process, the stamping die 100 of the present invention can press the surrounding materials to prevent wrinkling problems during the stretching process. Conventional stretching dies use upper and lower templates 21 to press the material. Since the surface of stainless steel is smoother, the material is easier to flow into the stretching cavity. The stamping die 100 of the present invention first stretches the edge of the product in the opposite direction to a certain height through the upper pressing block 12, the lower template 21, and the lower pressing block 22, so that the outer ring material is pressed. Then, during the process of stretching the material into the mold cavity, there is a raised fillet at the lower pressing block 22, which cooperates with the fillet of the stretching die to tighten and level the stretched material.

[0067] The aforementioned stamping die 100, based on a conventional upward-stretching die, incorporates a set of downward-stretching components. This first stretches the outer ring of the material downward by a certain height before the upward stretching begins in the middle region. At the bottom of the stretching process, the protrusion of the lower punch 22 cooperates with the rounded corners of the stretching die (upper punch 12) to squeeze the material, increasing the pressure. This keeps the outer ring material squeezed and taut during the stretching process, thus preventing wrinkles.

[0068] See also Figure 9The present invention also provides a stamping device 200, including the above-mentioned stamping die 100, the stamping die 100 is afraid of an upper die assembly 10 and a lower die assembly 20, the upper die assembly 10 includes: an upper template 11, an upper pressure block 12; the upper pressure block 12 is arranged on the inner side of the upper template 11, and the upper pressure block 12 is provided with a first protrusion 121; the lower die assembly 20, the lower die assembly 20 includes: a lower template 21, a lower pressure block 22; the lower pressure block 22 is arranged on the inner side of the lower template 21, and the lower pressure block 22 is provided with a first protrusion 121. A recessed portion 221 is provided on the side of the block 22 close to the upper pressing block 12, and the first protrusion 121 is adapted to the recessed portion 221. A second protrusion 211 is provided on the side of the lower template 21 close to the lower pressing block 22, and the second protrusion 211 faces the upper template 11; an elastic component 30, the elastic component 30 is provided above the lower template 21, the elastic component 30 is connected to the lower template 21, and the elastic component 30 is used to make the height of the lower mold component 20 higher than the punch 40 before the mold is opened. When the upper die assembly 10 and the lower die assembly 20 are opened, under the action of the elastic assembly 30, the lower die assembly 20 is higher than the upper end of the punch 40, and the forming material (metal material) can be located on the lower die assembly 20. In this way, during the stamping process, that is, when the upper die assembly 10 and the lower die assembly 20 are closed, the upper die assembly 10 and the lower die assembly 20 can first press the edge of the metal material to ensure that the outer ring of the metal material can be pressed first before the punch 40 stretches upward. The punch 40 then stamps the metal material and reversely stretches the edge of the metal material through the recessed portion 221 and the second protrusion 211. The edge pressing force of the metal material can well meet the requirements of longer stroke stretching, avoiding the problem of excessive tangential pressure on the edge of the metal material during stretching, resulting in uneven wrinkles along the tangential edge of the product. The stamped products have a low defective rate, which is conducive to improving production efficiency and reducing production costs.

[0069] Mentioning "embodiments" and "implementation methods" in this utility model means that the specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the utility model. The appearance of the phrases in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this utility model can be combined with other embodiments. In addition, it should also be understood that the features, structures or characteristics described in the various embodiments of this utility model can be arbitrarily combined to form another embodiment that does not deviate from the spirit and scope of the technical solution of this utility model, provided that there is no contradiction between them.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the above preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A stamping die, characterized in that: include: An upper mold assembly (10), comprising: an upper mold plate (11), an upper pressing block (12); The upper pressing block (12) is arranged on the inner side of the upper template (11), and the upper pressing block (12) is provided with a first protrusion (121); A lower die assembly (20), comprising: a lower die plate (21), a lower pressing block (22); The lower pressing block (22) is arranged on the inner side of the lower template (21); a recessed portion (221) is provided on the side of the lower pressing block (22) close to the upper pressing block (12); the first protrusion (121) is adapted to the recessed portion (221); a second protrusion (211) is provided on the side of the lower template (21) close to the lower pressing block (22); the second protrusion (211) faces the upper template (11); An elastic component (30) is provided above the lower mold plate (21), the elastic component (30) is connected to the lower mold plate (21), and the elastic component (30) is used to make the height of the lower mold component (20) higher than the punch (40) before mold opening.

2. The stamping die according to claim 1, characterized in that: The first protrusion (121) extends in a direction close to the lower template (21), a bending portion is provided on a side of the first protrusion (121) close to the upper template (11), and an arc chamfer is provided on a side of the first protrusion (121) away from the upper template (11).

3. The stamping die according to claim 1, characterized in that The side of the second protrusion (211) close to the lower pressing block (22) is provided with an arc chamfer, and the side of the second protrusion (211) away from the lower pressing block (22) is provided with an inclination.

4. The stamping die according to claim 1, wherein: The side of the upper template (11) close to the upper pressing block (12) and the side of the upper pressing block (12) close to the upper template (11) are both located on the second protrusion (211), and the height of the lower pressing block (22) is less than the height of the lower template (21).

5. The stamping die according to claim 1, wherein: The elastic component (30) comprises: an elastic member (31), a connecting plate (32), and a support rod (33); The elastic member (31) is arranged at the bottom of the connecting plate (32), one end of the support rod (33) is connected to the connecting plate (32), and the other end of the support rod (33) is connected to the lower template (21).

6. The stamping die according to claim 5, characterized in that: Also includes: Support seat (50); The support seat (50) has a receiving cavity (51), the elastic member (31) and the connecting plate (32) are both arranged in the receiving cavity (51), and the support rod (33) passes through the surface of the support seat (50) facing the lower template (21).

7. The stamping die according to claim 6, characterized in that: The lower die assembly (20) further includes: a floating material back plate (23), a lower pad (24), and a punch (40); The floating material backing plate (23) and the lower pad (24) are arranged in sequence along a first direction, wherein the lower pad (24) is arranged on the support seat (50), the floating material backing plate (23) is connected to the lower template (21), the support rod (33) passes through the lower pad (24) and is connected to the floating material backing plate (23), and the punch (40) is arranged on the lower pad (24).

8. The stamping die according to claim 1, wherein: The upper die assembly (10) further comprises: an upper backing plate (13) and an upper die seat (14); The upper die base (14), the upper pad (13), and the upper die plate (11) are arranged in sequence along a first direction, and the axes of the upper die base (14), the upper pad (13), and the upper die plate (11) are collinear.

9. The stamping die according to claim 8, characterized in that: Also includes: Inner stripping plate (60), reset member (70); The inner stripping plate (60) is arranged on the inner periphery of the upper pressing block (12), the reset member (70) passes through the upper pad (13), one end of the reset member (70) is connected to the inner stripping plate (60), and the other end of the reset member (70) is connected to the upper die seat (14).

10. A stamping device, characterized in that: include: The stamping die (100) according to any one of claims 1 to 9.

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