Stamping die

Abstract

The invention provides a stamping die. The stamping die comprises an upper die and a lower die, a side punching structure and a limiting structure for limiting a workpiece are arranged between the upper die and the lower die, at least part of the side punching structure and the limiting structure are stacked in the height direction, and the side punching structure is slidably connected with one of the upper die and the lower die; the limiting structure is provided with a limiting wall located on one side of the side punching structure, and the limiting wall is provided with an avoiding channel. The other one of the upper die and the lower die is provided with a driving piece, the driving piece is used for driving the side punching structure to move towards the limiting wall so as to extend into the avoiding channel, and the part, located between the side punching structure and the limiting wall, of the workpiece is punched, so that the side punching structure and the workpiece have the coincident size in the horizontal direction; by means of the area, in the horizontal direction of the die, of the workpiece, the side punching structure can be arranged, the side punching structure conducts punching from the inner side of the workpiece to the outer side of the workpiece to form side punching, the size of the punching die in the horizontal direction is reduced, and the convenience of layout of the punching die is improved.

Description

Technical Field

[0001] The invention relates to the technical field of molds, and in particular to a stamping mold. Background Art

[0002] Stamping is a forming method that uses a press and a die to apply external force to raw materials such as plates and strips to cause them to undergo plastic deformation or separation, thereby obtaining stamped parts of the desired shape and size. At present, most vehicle covering parts, such as fenders, are processed by stamping.

[0003] In the related art, the raw materials are placed in a mold and first punched to form a workpiece. A punch head for side punching the workpiece is usually provided in the mold, and the punch head is located on one side of the workpiece in the horizontal direction. After the workpiece is punched, it is usually necessary to drive the punch head to move in the horizontal direction toward the workpiece, so that the punch head punches from the outside to the inside of the workpiece, thereby punching a hole on the side of the workpiece. However, the arrangement of the punch head in the mold is unreasonable, resulting in a large space occupied by the mold in the horizontal direction of the stamping workshop, and an inconvenient layout. Summary of the invention

[0004] In view of this, an embodiment of the present invention is directed to providing a stamping die to solve the problem in the prior art that the stamping die occupies a large space in the horizontal direction and has an inconvenient layout.

[0005] The present invention provides a stamping die, comprising an upper die and a lower die which are arranged opposite to each other;

[0006] A side punching structure and a limiting structure for limiting the position of the workpiece are provided between the upper die and the lower die;

[0007] At least part of the side punching structure and the limiting structure are stacked in a height direction of the stamping die, and the side punching structure is slidably connected to one of the upper die and the lower die;

[0008] The limiting structure has a limiting wall, the limiting wall is located on one side of the side punching structure, and an avoidance channel is arranged on the limiting wall;

[0009] A driving member is provided on the other of the upper die and the lower die, and the driving member is used to drive the side punching structure to move toward the direction close to the limiting wall so as to extend into the avoidance channel to punch the part of the workpiece located between the side punching structure and the limiting wall.

[0010] Optionally, the side punching structure includes a sliding seat and a punch;

[0011] The sliding seat is slidably connected to one of the upper die and the lower die, the punch is arranged on a side of the sliding seat facing the limiting wall, and at least a part of the punch is used to penetrate the avoidance channel to punch the workpiece.

[0012] Optionally, the side punching structure further comprises a telescopic member arranged around the outside of the punch in the circumferential direction, one end of the telescopic member is connected to the sliding seat, and the other end of the telescopic member is used to abut against the workpiece;

[0013] The telescopic member comprises a flexible telescopic sleeve sleeved on the punch, and a side of the flexible telescopic sleeve facing the limiting wall is provided with an opening for the punch to enter or move out.

[0014] Optionally, the aperture of the avoidance channel on the side facing the side punching structure is larger than the aperture of the avoidance channel on the side facing away from the side punching structure;

[0015] And / or, an avoidance through hole is provided on the limiting wall, and an inner cavity of the avoidance through hole forms the avoidance channel.

[0016] Optionally, a blind avoidance hole is provided on the limiting wall, and the inner cavity of the blind avoidance hole forms the avoidance channel;

[0017] A discharge channel is arranged in the limiting wall, one end of the discharge channel is communicated with the avoidance blind hole, and the other end of the discharge channel is open and extends toward a direction close to the lower mold.

[0018] Optionally, a waste collecting piece is provided on the lower die, and the other end of the discharge channel is communicated with the inner cavity of the waste collecting piece;

[0019] The waste collecting piece is detachably connected to the lower mold.

[0020] Optionally, at least one first elastic member is connected between the side of the side punching structure facing the limiting wall and the lower die, and the first elastic member is used to drive the side punching structure to move in a direction away from the limiting wall after the side punching structure completes punching;

[0021] The first elastic member comprises a nitrogen spring;

[0022] And / or, at least one second elastic member is provided on a side of the side punching structure away from the limiting wall, the second elastic member is connected to one of the upper die and the lower die, and is used to abut against the side of the side punching structure away from the limiting wall;

[0023] The second elastic member includes a nitrogen spring.

[0024] Optionally, the driving member and the limiting wall are arranged on two opposite sides of the side punching structure.

[0025] Optionally, a first inclined surface is provided on the driving member, and a second inclined surface matching the first inclined surface is provided on the side punching structure, and the first inclined surface abuts against the second inclined surface when the upper mold and the lower mold move toward each other, and when the first inclined surface abuts against the second inclined surface, the driving member drives the side punching structure to move toward the limiting wall.

[0026] Optionally, the limiting structure includes a bearing member and a limiting member;

[0027] The bearing member is arranged on the lower die and used for bearing the workpiece, and at least part of the side punching structure is located on a side of the bearing member away from the upper die;

[0028] The limiting member is arranged on the upper die and can move toward the direction close to the bearing member to abut against the workpiece;

[0029] The limiting wall is connected to the limiting member.

[0030] Optionally, a third elastic member is provided between the limiting member and the upper mold, and two ends of the third elastic member are respectively connected to the upper mold and the limiting member;

[0031] There are at least two third elastic members, and at least two third elastic members are arranged at intervals;

[0032] And / or, the third elastic member comprises a nitrogen spring;

[0033] And / or, the limiting wall and the limiting member are integrally formed.

[0034] Optionally, a first guide portion is provided on the side punching structure, and a second guide portion is provided on the limiting wall, and the first guide portion and the second guide portion are cooperatively connected to guide the side punching structure;

[0035] One of the first guide portion and the second guide portion includes a guide column, and the other of the first guide portion and the second guide portion includes a guide sleeve into which the guide column can extend, and the axial direction of the guide column is the same as the axial direction of the avoidance channel;

[0036] And / or, at least two first guide portions are spaced apart on the side punching structure, and at least two second guide portions are spaced apart on the limiting wall, and the first guide portions and the second guide portions are disposed in one-to-one correspondence.

[0037] Optionally, there are two side punching structures, which are respectively arranged on both sides of the limiting wall, and the side of the limiting wall facing each side punching structure is provided with the avoidance channel, and there are two driving members, and one driving member corresponds to one side punching structure;

[0038] A discharge channel is arranged in the limiting wall, and the discharge channel is communicated with all the avoidance channels.

[0039] The stamping die provided by the present invention is provided with a side punching structure and a limiting structure for limiting the workpiece between the upper die and the lower die, so that at least part of the side punching structure and the limiting structure are stacked in the height direction of the stamping die, and the side punching structure is slidably connected to one of the upper die and the lower die. The limiting structure has a limiting wall, which is located on one side of the side punching structure in the horizontal direction, and an avoidance channel is provided on the limiting wall. A driving member is provided on the other of the upper die and the lower die, and the driving member is used to drive the side punching structure to move toward the direction close to the limiting wall so as to extend into the avoidance channel, so as to punch the part of the workpiece located between the side punching structure and the limiting wall. Since at least part of the side punching structure and the limiting structure are stacked in the height direction of the stamping die, that is, at least part of the side punching structure and the workpiece are stacked in the height direction of the stamping die, the projection of the side punching structure in the horizontal direction of the die and the projection of the workpiece in the horizontal direction of the die have an overlapping area, that is, the side punching structure and the workpiece have overlapping dimensions in the horizontal direction of the die. In this way, the area of ​​the workpiece in the horizontal direction of the die can be used to arrange the side punching structure and can also be used as a stroke space for the side punching structure, so that the side punching structure can be punched from the inside to the outside of the workpiece to form side punches. Compared with the scheme in the prior art that the punching head is located on one side of the workpiece in the horizontal direction, the arrangement of the side punching structure in the stamping die is more reasonable, which reduces the size of the stamping die in the horizontal direction, thereby reducing the space that the die needs to occupy in the horizontal direction of the stamping workshop to a certain extent, and improving the convenience of the die layout.

[0040] At the same time, since the side punching structure and the workpiece are stacked in the height direction of the stamping die, the projection of the side punching structure on the raw material of the workpiece overlaps with the area on the raw material used to form the workpiece, thereby reducing the size of the area occupied by the side punching structure on the raw material outside the area used to form the workpiece. In other words, the area on the raw material that cannot form the workpiece because it is covered by the side punching structure is reduced, that is, the waste area on the raw material where the workpiece cannot be formed is reduced, thereby improving the utilization rate of the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A cross-sectional view of a stamping die according to an embodiment of the present invention;

[0042] Figure 2 A cross-sectional view of a stamping die in use according to an embodiment of the present invention;

[0043] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0044] Figure 4 for Figure 3 A partial enlarged view of the

[0045] Figure 5 A schematic diagram of two workpieces being stamped on a stamping die according to an embodiment of the present invention;

[0046] Figure 6 It is a schematic diagram of two workpieces being punched on a punching die in the prior art.

[0047] Among them, 100, mold; 1, upper mold; 2, lower mold; 3, side punching structure; 31, sliding seat; 311, second inclined surface; 32, punch; 41, limit member; 42, limit wall; 421, avoidance channel; 422, discharge channel; 5, driving member; 51, first inclined surface; 6, telescopic member; 7, waste collecting member; 81, first elastic member; 82, second elastic member; 83, third elastic member; 91, first guide part; 92, second guide part; 200, workpiece; 300, raw material. DETAILED DESCRIPTION

[0048] The following will be combined with the accompanying 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 described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0049] Stamping is a forming method that uses a press and a die to apply external force to raw materials such as plates, strips, tubes and profiles to cause them to undergo plastic deformation or separation, thereby obtaining stamped parts of the desired shape and size. At present, most vehicle covering parts, such as fenders, are processed by stamping.

[0050] In the related art, the raw materials are placed in a mold and first punched to form a workpiece. A punch head for side punching the workpiece is usually provided in the mold, and the punch head is located on one side of the workpiece in the horizontal direction. After the workpiece is punched, it is usually necessary to drive the punch head to move in the horizontal direction toward the workpiece, so that the punch head punches from the outside to the inside of the workpiece, thereby punching a hole on the side of the workpiece. However, the arrangement of the punch head in the mold is unreasonable, resulting in a large space occupied by the mold in the horizontal direction of the stamping workshop, and an inconvenient layout.

[0051] Based on this, an embodiment of the present invention provides a stamping die, in which at least part of the side punching structure and the limiting structure of the workpiece are stacked along the height direction of the stamping die, that is, the side punching structure and the workpiece limited by the limiting structure are stacked along the height direction of the stamping die, so that the projection of the side punching structure in the horizontal direction of the die and the projection of the workpiece in the horizontal direction of the die have an overlapping area, that is, the side punching structure and the workpiece have overlapping dimensions in the horizontal direction, so that the area of ​​the workpiece in the horizontal direction of the die can be used to arrange the side punching structure and can also be used as a stroke space of the side punching structure, so that the side punching structure is punched from the inside to the outside of the workpiece to form side punches, and the arrangement of the side punching structure in the die is relatively reasonable, which reduces the size of the die in the horizontal direction, thereby reducing the space that the die needs to occupy in the horizontal direction of the stamping workshop to a certain extent, and improving the convenience of the die layout. At the same time, the size of the area occupied by the side punching structure on the raw material except the area used to form the workpiece is reduced. That is to say, the area on the raw material that cannot form the workpiece due to being covered by the side punching structure is reduced, that is, the waste area on the raw material where the workpiece cannot be formed is reduced, thereby improving the utilization rate of the raw materials.

[0052] The stamping die provided by the present invention is described in detail below with reference to the accompanying drawings through specific embodiments:

[0053] Reference Figures 1 to 6 As shown, this embodiment provides a stamping die 100, which includes an upper die 1 and a lower die 2 that are arranged opposite to each other.

[0054] Specifically, refer to Figures 1 to 4 As shown, a side punching structure 3 and a limiting structure for limiting the position of the workpiece 200 are arranged between the upper die 1 and the lower die 2. At least part of the side punching structure 3 and the limiting structure are arranged along the height direction of the stamping die 100 (reference Figure 3 The side punching structure 3 is stacked on the upper die 1 and the lower die 2 in the Z direction as shown, and the side punching structure 3 is slidably connected to one of the upper die 1 and the lower die 2. The limiting structure has a limiting wall 42 extending toward the side where the side punching structure 3 is located, and the limiting wall 42 is located on one side of the side punching structure 3 in the horizontal direction. The limiting wall 42 is provided with an avoidance channel 421, and the other of the upper die 1 and the lower die 2 is provided with a driving member 5, and the driving member 5 is used to drive the side punching structure 3 to move toward the direction close to the limiting wall 42 so as to extend into the avoidance channel 421, so as to punch the part of the workpiece 200 located between the side punching structure 3 and the limiting wall 42.

[0055] It should be noted that after the workpiece 200 is positioned by the limiting structure in the die 100, part of the workpiece 200 and the side punching structure 3 are stacked in the height direction of the stamping die 100, and the part to be punched on the workpiece 200 is located between the side punching structure 3 and the limiting wall 42. Specifically, the part to be punched on the workpiece 200 can be stopped on the side of the limiting wall 42 facing the side punching structure 3.

[0056] By stacking at least part of the side punching structure 3 and the limiting structure along the height direction of the stamping die 100, the side punching structure 3 and the workpiece 200 limited by the limiting structure are stacked along the height direction of the stamping die 100, that is, in the height direction of the stamping die 100, the side punching structure 3 is arranged on one side of the workpiece 200, so that the projection of the side punching structure 3 in the horizontal direction of the die 100 and the projection of the workpiece 200 in the horizontal direction of the die 100 have overlapping parts, so that in the horizontal direction of the die 100, the side punching structure 3 and the workpiece 200 have overlapping sizes. Compared with the solution in the prior art that the side punching structure 3 is arranged on one side of the workpiece 200 along the horizontal direction, at least the size of the die 100 in the horizontal direction is reduced, thereby reducing the volume of the die 100, which is convenient for the layout and assembly of the die 100.

[0057] Moreover, in the height direction of the stamping die 100, the side punching structure 3 is arranged on one side of the workpiece 200, so that the projection of the side punching structure 3 on the raw material 300 of the workpiece 200 overlaps with the area on the raw material 300 used to form the workpiece 200. In this way, the area of ​​the workpiece 200 in the horizontal direction of the die 100 can be used to arrange the side punching die 100 and can also be used as a travel space for the side punching structure 3, so that the side punching structure 3 punches from the inside to the outside of the workpiece 200 to form a side punching, which is consistent with the above. Compared with the solution in the prior art that the side punching structure 3 is arranged on one side of the workpiece 200 along the horizontal direction and the side punching structure 3 is punched from the outside to the inside of the workpiece 200 to form the side punching hole, the size of the area occupied by the side punching structure 3 on the raw material 300 outside the workpiece 200 is reduced. In other words, the area on the raw material 300 that is covered by the side punching structure 3 and cannot form the workpiece 200 is reduced, that is, the waste area on the raw material 300 where the workpiece 200 cannot be formed is reduced, that is, the utilization rate of the raw material 300 is improved.

[0058] At the same time, in the height direction of the stamping die 100, the side punching structure 3 is arranged on one side of the workpiece 200, so that the punching structure punches from the inside to the outside of the workpiece 200 to form a side punch, so that the burrs generated by the side punching are on the outside of the workpiece 200, which is convenient for removing the burrs.

[0059] In specific implementation, the limiting structure is used to position the workpiece 200 produced by stamping of the mold 100, so that the position of the workpiece 200 relative to the mold 100 is fixed at least during the side punching process, which facilitates the side punching structure 3 to punch the workpiece 200 to form side punches.

[0060] In some implementations, the driving member 5 can, for example, be driven by the upper mold 1 to move toward the direction close to the lower mold 2 to cooperate with the side punching structure 3, thereby driving the side punching structure 3 to move toward the direction close to the limiting wall 42 to achieve side punching.

[0061] Of course, in other implementations, the driving member 5 may be, for example, a motor, and the driving of the side punching by the driving member 5 does not depend on the movement of the upper die 1 .

[0062] The stamping die 100 provided in this embodiment is provided with a side punching structure 3 and a limiting structure for limiting the workpiece 200 between the upper die 1 and the lower die 2, so that at least part of the side punching structure 3 and the limiting structure are stacked in the height direction of the stamping die 100, and the side punching structure 3 is slidably connected to one of the upper die 1 and the lower die 2. The limiting structure has a limiting wall 42, which is located on one side of the side punching structure 3 in the horizontal direction, and an avoidance channel 421 is provided on the limiting wall 42. A driving member 5 is provided on the other of the upper die 1 and the lower die 2, and the driving member 5 is used to drive the side punching structure 3 to move toward the direction close to the limiting wall 42 so as to extend into the avoidance channel 421, so as to punch the part of the workpiece 200 located between the side punching structure 3 and the limiting wall 42. Since at least part of the side punching structure 3 and the limiting structure are stacked in the height direction of the stamping die 100, that is, at least part of the side punching structure 3 and the workpiece 200 are stacked in the height direction of the stamping die, the projection of the side punching structure 3 in the horizontal direction of the die 100 and the projection of the workpiece 200 in the horizontal direction of the die 100 have an overlapping area, that is, the side punching structure 3 and the workpiece 200 have overlapping dimensions in the horizontal direction of the die 100, so that the side punching structure 3 and the workpiece 200 can be arranged by utilizing the area of ​​the workpiece 200 in the horizontal direction of the die 100. The punching structure 3 can also be used as a travel space for the side punching structure 3, so that the side punching structure 3 can punch from the inside to the outside of the workpiece 200 to form a side punching. Compared with the solution in the prior art that the punching head is arranged on one side of the workpiece 200 in the horizontal direction, the arrangement of the side punching structure 3 in the stamping die 100 is more reasonable, which reduces the size of the stamping die 100 in the horizontal direction, thereby reducing the space that the stamping die 100 needs to occupy in the horizontal direction of the stamping workshop to a certain extent, and improving the convenience of the layout of the stamping die 100 in the stamping workshop.

[0063] At the same time, since the side punching structure 3 and the workpiece 200 are stacked in the height direction of the stamping die 100, the projection of the side punching structure 3 on the raw material 300 of the workpiece 200 overlaps with the area on the raw material 300 used to form the workpiece 200, thereby reducing the size of the area occupied by the side punching structure 3 on the raw material 300 outside the area used to form the workpiece 200. In other words, the area on the raw material 300 that cannot form the workpiece 200 due to being covered by the side punching structure 3 is reduced, that is, the waste area on the raw material 300 that cannot form the workpiece 200 is reduced, thereby improving the utilization rate of the raw material 300.

[0064] In some implementations, reference Figure 3 and Figure 4 As shown, in the height direction of the stamping die 100, the side punching structure 3 is arranged below the workpiece 200, and the side punching structure 3 is slidably connected to the lower die 2. The limiting structure has a limiting wall 42 extending downward, and the workpiece 200 has a flange to be punched, which can extend downward, for example, and is located between the limiting wall 42 and the side facing the side punching structure 3. A driving member 5 is provided on the upper die 1.

[0065] In other embodiments, in the height direction of the stamping die 100, the side punching structure 3 is arranged above the workpiece 200, and the side punching structure 3 is slidably connected to the upper die 1. The limiting structure has a limiting wall 42 extending upward, and the workpiece 200 has a flange to be punched, which can extend upward, for example, and is located between the limiting wall 42 and the side facing the side punching structure 3. A driving member 5 is provided on the lower die 2.

[0066] The following embodiments are described by taking the case where the side punching structure 3 is arranged below the workpiece 200 , the side punching structure 3 is slidably connected to the lower die 2 , and the upper die 1 is provided with a driving member 5 .

[0067] In some embodiments, a first sliding part is provided on the side punching structure 3, and a second sliding part is provided on the lower mold 2. The side punching structure 3 is slidably connected to the lower mold 2 through the cooperation of the first sliding part and the second sliding part. The structure is simple and easy to manufacture.

[0068] In a specific implementation, the first sliding part may be, for example, a slide rail, and the second sliding part may be a slide groove matching the slide rail.

[0069] Of course, in other implementations, the first sliding portion may be, for example, a sliding groove, and the second sliding portion may be a sliding rail that can extend into the sliding groove.

[0070] In other embodiments, the side punching structure 3 and the lower die 2 may also be slidably connected via a ball screw or the like.

[0071] In some embodiments, the side punching structure 3 includes a sliding seat 31 and a punch 32. The sliding seat 31 is slidably connected to one of the upper die 1 and the lower die 2. The punch 32 is arranged on the side of the sliding seat 31 facing the limiting wall 42. At least a portion of the punch 32 is used to penetrate into the avoidance channel 421 to punch the flange of the workpiece 200, thereby forming an opening on the flange of the workpiece 200.

[0072] Exemplarily, the sliding seat 31 is slidably connected to the lower die 2. During side punching, the sliding seat 31 is driven by the driving member 5 to move toward the direction close to the limiting wall 42, so that the punch 32 extends into the avoidance channel 421, thereby forming a punch hole on the flange of the workpiece 200.

[0073] In a specific implementation, the sliding seat 31 can be slidably connected to the lower mold 2 by, for example, using a slide rail and a slide groove.

[0074] During side punching, since the punch 32 is inserted into the avoidance channel 421 , waste materials formed by the side punching of the punch 32 can be discharged from the avoidance channel 421 .

[0075] In some implementations, the shape of the punch 32 matches the shape of the avoidance channel 421 to facilitate side punching.

[0076] Exemplarily, the punch 32 is circular, the inner cavity of the avoidance channel 421 may be, for example, a cylindrical through hole, and the radial cross-section of the avoidance channel 421 is circular.

[0077] refer to Figure 4 As shown, in some embodiments, the side punching structure 3 further includes a telescopic member 6 arranged around the outside of the punch 32 , one end of the telescopic member 6 is connected to the sliding seat 31 , and the other end of the telescopic member 6 is used to abut against the workpiece 200 .

[0078] By arranging a telescopic member 6 on the circumferential outer side of the punch 32, the telescopic member 6 is connected to the sliding seat 31. In this way, during side punching, the telescopic member 6 and the punch 32 move with the movement of the sliding seat 31. When the end of the telescopic member 6 facing away from the sliding seat 31 abuts against the workpiece 200, the telescopic member 6 can press the workpiece 200 and press the workpiece 200 against the limiting wall 42, so that the position of the limiting wall 42 during side punching is more stable, thereby facilitating the punch 32 to perform side punching.

[0079] The telescopic member 6 is elastically retractable, so when the side-punching operation is completed, the telescopic member 6 can be reset, which is convenient to use.

[0080] In a specific implementation, the telescopic member 6 includes a flexible telescopic sleeve sleeved on the punch 32 , and a side of the flexible telescopic sleeve facing the limiting wall 42 has an opening for the punch 32 to enter or move out.

[0081] By setting the telescopic part 6 as a flexible telescopic sleeve, the flexible telescopic sleeve is arranged around the circumferential outer side of the punch 32, so that the flexible telescopic sleeve can not only press the workpiece 200 during side punching, making the workpiece 200 more stable, but the flexible telescopic sleeve also has a certain protective effect on the punch 32, thereby extending the service life of the punch 32 to a certain extent.

[0082] The flexible telescopic sleeve may be, for example, a rubber sleeve, a silicone sleeve, or the like.

[0083] In other implementations, the telescopic member may be, for example, a spring.

[0084] refer to Figure 4 As shown, in some embodiments, the aperture of the avoidance channel 421 on the side facing the side punching structure 3 is larger than the aperture of the avoidance channel 421 on the side facing away from the side punching structure 3, that is, the aperture of the avoidance channel 421 on the side facing the sliding seat 31 is larger than the aperture of the avoidance channel 421 on the side facing away from the sliding seat 31, so that the waste formed during side punching can be discharged more conveniently after entering the avoidance channel 421.

[0085] In a specific implementation, the minimum aperture of the avoidance channel 421 facing the sliding seat 31 is larger than the diameter of the punch 32 .

[0086] In some embodiments, an avoidance through hole is provided on the limiting wall 42, and the inner cavity of the avoidance through hole is formed as an avoidance channel 421, and waste generated during side punching can be directly discharged through the avoidance through hole.

[0087] refer to Figure 3 and Figure 4 As shown, in some embodiments, a blind avoidance hole is provided on the limiting wall 42, and the inner cavity of the blind avoidance hole is formed as a avoidance channel 421. A discharge channel 422 with two ends opened is provided in the limiting wall 42, one end of the discharge channel 422 is connected to the avoidance channel 421, and the other end of the discharge channel 422 is extended toward the direction close to the lower mold 2.

[0088] By setting a discharge channel 422 connected to the avoidance channel 421 in the limiting wall 42, the end of the discharge channel 422 that is away from the avoidance channel 421 is extended in the direction close to the lower mold 2. In this way, during side punching, as long as the waste enters the discharge channel 422, it can move downward and be discharged under the action of gravity, so that the waste formed by side punching can be discharged more conveniently.

[0089] refer to Figure 3 and Figure 4 As shown, in some embodiments, a waste collecting piece 7 is provided on the lower mold 2 , and the other end of the discharge channel 422 is connected to the inner cavity of the waste collecting piece 7 .

[0090] By arranging a waste collecting piece 7 on the lower mold 2, the other end of the discharge channel 422, i.e., the end of the discharge channel 422 facing away from the avoidance channel 421, is connected to the inner cavity of the waste collecting piece 7, so that the waste discharged from the discharge channel 422 can enter the waste collecting piece 7, making it convenient to collect the waste and clean it up.

[0091] The waste collecting part 7 may be, for example, a waste tray, a waste box, a waste drawer, etc.

[0092] In a specific implementation, the waste collecting piece 7 can be detachably connected to the lower mold 2, so that the waste collecting piece 7 can be removed from the lower mold 2, and then the waste in the waste collecting piece 7 can be cleaned, which further improves the convenience of waste cleaning.

[0093] In some implementations, the lower mold 2 may have a receiving groove for receiving the waste collecting piece 7, and the groove opening of the receiving groove is opened on the side wall of the lower mold. The waste collecting piece 7 can be placed into the receiving groove from the groove opening of the receiving groove, or removed from the receiving groove to clean the collected side-punching waste.

[0094] Among them, the top of the accommodating groove can be, for example, an opening, and the lower mold has a material receiving port for exposing the opening at the position corresponding to the opening. The bottom end of the discharge channel 422 can be, for example, located directly above the material receiving port, and the side-flushing waste discharged through the discharge channel 422 enters the waste collecting part 7 through the material receiving port and the opening in turn.

[0095] In a specific implementation, the material receiving opening is, for example, an opening coaxial with the opening, and of course, it can also be a hollow cylindrical hole coaxial with the opening.

[0096] refer to Figure 3 and Figure 4 As shown, in some embodiments, at least one first elastic member 81 is connected between the side of the side punching structure 3 facing the limiting wall 42 and the lower mold 2, and the first elastic member 81 is used to drive the side punching structure 3 to move in a direction away from the limiting wall 42 after the side punching structure 3 completes punching.

[0097] By connecting the first elastic member 81 between the side punching structure 3 and the limiting wall 42, after the side punching is completed, the side punching structure 3 can move in a direction away from the limiting wall 42 under the action of the elastic force of the first elastic member 81, which is convenient for resetting the side punching structure 3 and is easy to use.

[0098] In a specific implementation, for example, a first elastic member 81 can be connected between the side punching structure 3 and the limiting wall 42. Of course, multiple first elastic members 81 can also be connected between the side punching structure 3 and the limiting wall 42. The multiple first elastic members 81 are arranged at intervals to further facilitate the resetting of the side punching structure 3.

[0099] In some implementations, the first elastic member 81 may be, for example, a nitrogen spring. Of course, in other implementations, the first elastic member may also be, for example, a mechanical spring, a hydraulic cylinder, a pneumatic cylinder, etc.

[0100] refer to Figure 1 and Figure 2 As shown, in some embodiments, at least one second elastic member 82 is provided on the side of the side punching structure 3 facing away from the limiting wall 42, and the second elastic member 82 is connected to one of the upper mold 1 and the lower mold 2, and is used to abut against the side of the side punching structure 3 facing away from the limiting wall 42.

[0101] By arranging a second elastic member 82 on the side of the side punching structure 3 away from the limiting wall 42, one end of the second elastic member 82 is connected to the lower mold 2 connected to the side punching structure 3, and the other end of the second elastic member 82 is used to abut against the side punching structure 3, so that when the side punching structure 3 moves and resets in the direction away from the limiting wall 42, when the side punching structure 3 moves to a preset position, the second elastic member 82 can support the side punching structure 3, and the second elastic member 82 plays a certain resetting and limiting role on the side punching structure 3, thereby avoiding the side punching structure 3 from colliding with the lower mold 2 due to excessive movement. Therefore, the second elastic member 82 has a certain protective effect on both the side punching structure 3 and the mold 100.

[0102] In a specific implementation, for example, a plurality of second elastic members 82 may be provided on the side of the side punching structure 3 that is away from the limiting wall 42. The plurality of second elastic members 82 are arranged at intervals, thereby enhancing the resetting and limiting effect of the side punching structure 3, further avoiding the side punching structure 3 from colliding with the lower mold 2 due to excessive movement, and providing better protection for the side punching structure 3 and the mold 100.

[0103] In some implementations, the second elastic member 82 may be, for example, a nitrogen spring. Of course, in other implementations, the second elastic member may also be, for example, a mechanical spring, a hydraulic cylinder, a pneumatic cylinder, etc.

[0104] refer to Figure 3 As shown, in some embodiments, the projection of the driving member 5 on one of the upper mold 1 and the lower mold 2 is located on the side of the side punching structure 3 away from the limiting wall 42. The arrangement is such that the driving member 5 is located on the side of the side punching structure 3 away from the limiting wall 42 in the horizontal direction of the mold 100, that is, the driving member 5 and the limiting wall 42 are arranged on the opposite sides of the side punching structure 3 in the horizontal direction of the mold 100, so that the driving member 5 and the limiting wall 42 are arranged on the opposite sides of the side punching structure 3 in the horizontal direction of the mold 100, so that during side punching, it is convenient for the driving member 5 to drive the side punching structure 3 to move in a straight line, so that the driving efficiency of the driving member 5 is higher.

[0105] refer to Figure 3 As shown, in some embodiments, a first inclined surface 51 is provided on the driving member 5, and a second inclined surface 311 matching the first inclined surface 51 is provided on the side punching structure 3. The first inclined surface 51 abuts against the second inclined surface 311 when the upper mold 1 and the lower mold 2 move toward each other. When the first inclined surface 51 abuts against the second inclined surface 311, the driving member 5 drives the side punching structure 3 to move toward the direction close to the limiting wall 42.

[0106] In some implementations, the driving member 5 is, for example, disposed on the upper mold 1 , and the driving member 5 is relatively fixed to the upper mold 1 .

[0107] By setting a first inclined surface 51 on the driving member 5 and a second inclined surface 311 on the side punching structure 3, when the upper mold 1 moves toward the direction close to the lower mold 2 (that is, the upper mold 1 moves downward along the height direction of the mold 100) until the first inclined surface 51 and the second inclined surface 311 abut against each other, the driving member 5 has a component force in the horizontal direction on the side punching structure 3, so that when the driving member 5 moves toward the direction close to the lower mold 2 driven by the upper mold 1, the side punching structure 3 can be driven to move in the horizontal direction toward the direction close to the stop wall. In this way, with the cooperation of the first inclined surface 51 and the second inclined surface 311, the vertical movement of the driving member 5 is converted into the horizontal movement of the side punching structure 3, and the driving member 5 and the side punching structure 3 form an inclined wedge mechanism, so that the movement of the side punching structure 3 is convenient and stable.

[0108] In a specific implementation, the first inclined surface 51 can be, for example, disposed at the bottom end of the driving member 5 , and the second inclined surface 311 can be, for example, disposed at the top end of the sliding seat 31 which is away from the stop wall.

[0109] In a specific implementation, in the direction from the side punching structure 3 to the limiting wall 42, the first inclined surface 51 and the second inclined surface 311 are both inclined toward a direction away from the moving direction of the side punching structure 3, so that the movement of the side punching structure 3 is more convenient.

[0110] refer to Figure 3 and Figure 4 As shown, in some embodiments, the limiting structure includes a bearing member and a limiting member 41, the bearing member is arranged on the lower die 2 and is used to bear the workpiece 200, and at least part of the side punching structure 3 is located on the side of the bearing member away from the upper die 1. The limiting member 41 is arranged on the upper die 1 and can move toward the direction close to the bearing member to abut against the workpiece 200. The limiting wall 42 is connected to the limiting member 41. Specifically, the limiting member 41, the bearing member, and at least part of the sliding seat 31 are stacked along the height direction of the stamping die, so that the limiting member 41, the workpiece 200, and at least part of the sliding seat 31 are stacked along the height direction of the stamping die.

[0111] In a specific implementation, the raw material 300 is placed in the mold 100 , and after the workpiece 200 is formed by punching the raw material 300 , the workpiece 200 is located on the carrier of the lower mold 2 .

[0112] By setting a limit piece on the upper mold 1, and the limit piece can move toward the direction close to the supporting member, during side punching, the limit piece can be moved downward to abut against the workpiece 200, so that the position of the workpiece 200 is relatively stable, thereby fixing the workpiece 200 on the supporting member, making it easier for the side punching structure 3 to side punch the workpiece 200 and realize side punching.

[0113] In a specific implementation, the limit member 41 can be fixedly connected to the upper die 1, for example. In this way, when the press drives the upper die 1 to move downward in a direction close to the lower die 2, the limit member 41 can abut against the workpiece 200 under the drive of the upper die 1, so that the movement of the limit member 41 does not require additional driving force to drive, and is easy to use.

[0114] Exemplarily, the limiting member and the driving member 5 are both connected to the upper die 1. In specific use, when the press drives the upper die 1 to move downward toward the direction close to the lower die 2, the limiting member 41 and the driving member 5 move toward the direction of the lower die 2 at the same time under the drive of the upper die 1, and the workpiece 200 is limited by the contact between the limiting member 41 and the workpiece 200, and the first inclined surface 51 of the driving member 5 and the second inclined surface 311 of the side punching structure 3 are contacted, so that the driving member 5 can drive the side punching structure 3 to move toward the direction close to the stop wall during the downward movement, so as to realize side punching, which is convenient to use.

[0115] In some implementations, the stroke of the limit member 41 is, for example, smaller than the stroke of the driving member 5. Thus, before the first inclined surface 51 of the driving member 5 abuts the second inclined surface 311 of the side punching structure 3, the limit member 41 can abut against the workpiece 200, thereby limiting the workpiece 200 and improving the accuracy and convenience of the side punching operation.

[0116] refer to Figure 3 As shown, in some embodiments, a third elastic member 83 is disposed between the limiting member 41 and the upper mold 1 , and two ends of the third elastic member 83 are respectively connected to the upper mold 1 and the limiting member 41 .

[0117] The limiting member 41 is connected to the upper mold 1 through the third elastic member 83. Since the third elastic member 83 is elastic, it can prevent the limiting member 41 from excessively abutting against the workpiece 200, has a certain protective effect on the workpiece 200, and improves the safety of the side punching operation.

[0118] In a specific implementation, for example, a plurality of third elastic members 83 may be provided between the limit member 41 and the upper mold 1. The plurality of third elastic members 83 are arranged at intervals in the horizontal direction, thereby improving the resilience of the limit member 41 and further avoiding the excessive abutment of the limit member 41 against the workpiece 200. Thus, the limit member 41 has a better protective effect on the workpiece 200 while having a limiting effect on the workpiece 200.

[0119] In specific implementation, the third elastic member 83 may be, for example, a nitrogen spring, which has a simple structure and is easy to manufacture. Of course, in other implementations, the third elastic member may also be, for example, a mechanical spring, a hydraulic cylinder, a pneumatic cylinder, etc.

[0120] In some embodiments, the limiting wall 42 and the limiting member 41 are integrally formed, that is, the limiting wall 42 and the limiting member 41 are an integral structure with good integrity and high structural strength, which improves the stopping strength of the limiting wall 42 on the flange to be punched on the workpiece 200. In addition, the limiting wall 42 and the avoidance channel 421 for the punch 32 of the side punching structure 3 to extend into are formed on the limiting member 41, so that before the side punching process, the limiting wall 42 can be retracted together with the limiting member 41, avoiding the interference of the limiting wall 42 with the workpiece 200, thereby improving the safety of the stamping process.

[0121] refer to Figure 1 and Figure 2 As shown, in some embodiments, a first guide portion 91 is provided on the side punching structure 3, and a second guide portion 92 is provided on the limiting wall 42. The first guide portion 91 and the second guide portion 92 are connected in cooperation to guide the cooperation between the side punching structure 3 and the avoidance channel 421. In this way, through the cooperation between the first guide portion 91 and the second guide portion 92, the side punching structure 3 enters the avoidance channel 421, which has a guiding effect, thereby ensuring the accuracy of the side punching.

[0122] During specific use, the sliding seat 31 moves toward the direction close to the limiting wall 42. When performing side punching operation, the first guide part 91 and the second guide part 92 are first connected and matched, and then the punch 32 enters the avoidance channel 421 to perform side punching operation, thereby improving the accuracy of side punching.

[0123] In some embodiments, one of the first guide portion 91 and the second guide portion 92 includes a guide column, and the other of the first guide portion 91 and the second guide portion 92 includes a guide sleeve into which the guide column can be inserted. The axial direction of the guide column is the same as the axial direction of the avoidance channel 421, and the structure is simple and easy to manufacture.

[0124] In some implementations, a side of the limiting wall 42 facing the sliding seat 31 may be provided with a guide sleeve, and a side of the sliding seat 31 facing the limiting wall 42 may be provided with a guide column.

[0125] In some other implementations, a side of the limiting wall 42 facing the sliding seat 31 may be provided with a guide column, and a side of the sliding seat 31 facing the limiting wall 42 may be provided with a guide sleeve.

[0126] In some other embodiments, one of the first guide portion 91 and the second guide portion 92 is a guide block, and the other of the first guide portion 91 and the second guide portion 92 is a guide plate.

[0127] In a specific implementation, at least two first guide portions 91 are spaced apart on the side punching structure 3, and at least two second guide portions 92 are spaced apart on the limiting wall 42. The first guide portions 91 and the second guide portions 92 are arranged in a one-to-one correspondence, that is, a plurality of groups of guide structures are arranged between the side punching structure 3 and the limiting wall 42, and the plurality of groups of guide structures are spaced apart, thereby further improving the accuracy of the side punching.

[0128] refer to Figures 1 to 3 As shown, in some embodiments, there are two side punching structures 3, and the two side punching structures 3 are arranged on both sides of the limiting wall 42. An avoidance channel 421 is opened on one side of the limiting wall 42 facing each side punching structure 3, and a discharge channel 422 connected to all the avoidance channels 421 is arranged in the limiting wall 42. There are two driving members 5, and one driving member 5 corresponds to one side punching structure 3. In this way, side punching operations can be performed on two workpieces 200 at the same time, thereby improving the work efficiency of the side punching operation.

[0129] refer to Figure 3 and Figure 4 As shown, a discharge channel 422 is provided in the limiting wall 42, and the discharge channel 422 is connected to all the avoidance channels 421. The discharge channel 422 is opened on the side away from the avoidance channel 421, and is extended in the direction close to the lower mold, so that the mold 100 performs side punching operations on two workpieces 200 at the same time, and the waste generated during the side punching of the two side punching structures 3 can be discharged from the discharge channel 422.

[0130] Furthermore, when side punching is performed on two workpieces 200 at the same time, since the two side punching structures 3 are respectively stacked with the corresponding workpieces 200 in the height direction of the mold 100, the two side punching structures 3 will not occupy the distance between the two workpieces 200, thereby reducing the distance between the two areas on the raw material 300 for forming the workpieces 200. In this way, when two workpieces 200 are stamped out on a piece of raw material 300, the utilization rate of the raw material 300 is improved.

[0131] The following description will be made by taking the example of simultaneously punching two workpieces 200 from a raw material 300 .

[0132] For example, reference Figure 6As shown, in the prior art, a large interval needs to be reserved between two areas on the raw material 300 for forming the workpiece 200 for arranging the two side punching structures 3, so that on the raw material 300, the horizontal dimension L1 of the interval between the two areas for forming the workpiece 200 is usually 600 mm. After the stamping is completed, a large waste area is formed between the two areas of the workpiece 200 on the raw material 300 due to the arrangement of the side punching structure 3, resulting in a low utilization rate of the raw material 300. Figure 6 The utilization rate of raw material 300 is 32.4%.

[0133] refer to Figure 5 As shown, when the stamping die 100 of this embodiment is used to stamp the raw material 300, since the two side punching structures 3 are respectively arranged under the two workpieces 200, there is no need to reserve a space between the two areas on the raw material 300 for forming the workpieces 200 to arrange the side punching structures 3. Figure 5 and Figure 6 In the case where the workpieces 200 have the same structure, it is only necessary to reserve a small space between two areas for forming the workpieces 200 on the raw material 300 to separate the workpieces 200 formed by stamping.

[0134] refer to Figure 5 As shown, in the case where the workpieces 200 have the same structure, since the two side punching structures 3 are respectively arranged below the two workpieces 200, the horizontal dimension L1 of the interval between the two areas for forming the workpieces 200 on the raw material 300 is reduced to 60m. In this way, after the stamping is completed, due to the arrangement of the side punching structure 3 on the raw material 300, no waste area will be formed between the areas of the two workpieces 200, thereby improving the utilization rate of the raw material 300. Figure 6 The utilization rate of raw material 300 is 56.4%.

[0135] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0136] In this article, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0137] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A stamping die, characterized in that: It comprises an upper die (1) and a lower die (2) which are arranged opposite to each other; A side punching structure (3) and a limiting structure for limiting the position of a workpiece (200) are provided between the upper die (1) and the lower die (2); At least part of the side punching structure (3) and the limiting structure are stacked in a height direction of the stamping die; the side punching structure (3) is slidably connected to one of the upper die (1) and the lower die (2); The limiting structure comprises a limiting wall (42), the limiting wall (42) is located on one side of the side punching structure (3), and an avoidance channel (421) is provided on the limiting wall (42); A driving member (5) is provided on the other of the upper die (1) and the lower die (2), and the driving member (5) is used to drive the side punching structure (3) to move in a direction close to the limiting wall (42) so as to extend into the avoidance channel (421) so as to punch a portion of the workpiece (200) located between the side punching structure (3) and the limiting wall (42).

2. The stamping die according to claim 1, characterized in that: The side punching structure (3) comprises a sliding seat (31) and a punch (32); The sliding seat (31) is slidably connected to one of the upper die (1) and the lower die (2); the punch (32) is arranged on a side of the sliding seat (31) facing the limiting wall (42); at least a portion of the punch (32) is used to penetrate the avoidance channel (421) to punch the workpiece (200).

3. The stamping die according to claim 2, characterized in that: The side punching structure (3) further comprises a telescopic member (6) arranged around the outside of the punch (32) in the circumferential direction, one end of the telescopic member (6) is connected to the sliding seat (31), and the other end of the telescopic member (6) is used to abut against the workpiece (200); The telescopic member (6) comprises a flexible telescopic sleeve sleeved on the punch (32), and a side of the flexible telescopic sleeve facing the limiting wall (42) has an opening for the punch (32) to enter or move out.

4. The stamping die according to claim 1, characterized in that: The aperture of the avoidance channel (421) on the side facing the side punching hole structure (3) is larger than the aperture of the avoidance channel (421) on the side facing away from the side punching hole structure (3); And / or, the limiting wall (42) is provided with an avoidance through hole, and the inner cavity of the avoidance through hole forms the avoidance channel (421).

5. The stamping die according to claim 1, characterized in that: The limiting wall (42) is provided with an avoidance blind hole, and the inner cavity of the avoidance blind hole forms the avoidance channel (421); A discharge channel (422) is provided in the limiting wall (42), one end of the discharge channel (422) is communicated with the avoidance blind hole, and the other end of the discharge channel (422) is open and extends in a direction close to the lower mold (2).

6. The stamping die according to claim 5, characterized in that: The lower mold (2) is provided with a waste collecting piece (7), and the other end of the discharge channel (422) is connected to the inner cavity of the waste collecting piece (7); The waste collecting piece (7) is detachably connected to the lower mold (2).

7. The stamping die according to claim 1, characterized in that: At least one first elastic member (81) is connected between the side of the side punching structure (3) facing the limiting wall (42) and the lower mold (2), and the first elastic member (81) is used to drive the side punching structure (3) to move in a direction away from the limiting wall (42) after the side punching structure (3) completes punching; The first elastic member (81) comprises a nitrogen spring; And / or, at least one second elastic member (82) is provided on a side of the side punching structure (3) facing away from the limiting wall (42), and the second elastic member (82) is connected to one of the upper mold (1) and the lower mold (2), and is used to abut against the side of the side punching structure (3) facing away from the limiting wall (42); The second elastic member (82) comprises a nitrogen spring.

8. The stamping die according to claim 1, characterized in that: The driving member (5) and the limiting wall (42) are arranged on two opposite sides of the side punching structure (3).

9. The stamping die according to claim 8, characterized in that: The driving member (5) is provided with a first inclined surface (51), and the side punching structure (3) is provided with a second inclined surface (311) matching the first inclined surface (51); The first inclined surface and the second inclined surface abut against each other when the upper mold (1) and the lower mold (2) move toward each other, and the driving member (5) drives the side punching structure (3) to move in a direction close to the limiting wall (42) when the first inclined surface (51) abuts against the second inclined surface (311).

10. The stamping die according to claim 1, characterized in that: The limiting structure comprises a bearing member and a limiting member (41); The carrier is arranged on the lower die (2) and is used to carry the workpiece (200), and at least part of the side punching structure (3) is located on a side of the carrier facing away from the upper die (1); The limiting member (41) is arranged on the upper die (1) and is capable of moving in a direction close to the carrier to abut against the workpiece (200); The limiting wall (42) is connected to the limiting member (41).

11. The stamping die according to claim 10, characterized in that: A third elastic member (83) is provided between the limiting member (41) and the upper mold (1), and two ends of the third elastic member (83) are respectively connected to the upper mold (1) and the limiting member (41); There are at least two third elastic members (83), and at least two third elastic members (83) are arranged at intervals; And / or, the third elastic member (83) comprises a nitrogen spring; And / or, the limiting wall (42) and the limiting member (41) are integrally formed.

12. The stamping die according to any one of claims 1 to 11, characterized in that: The side punching structure (3) is provided with a first guide portion (91), and the limiting wall (42) is provided with a second guide portion (92), and the first guide portion (91) and the second guide portion (92) are matched and connected to guide the side punching structure (3); One of the first guide portion (91) and the second guide portion (92) comprises a guide column, and the other of the first guide portion (91) and the second guide portion (92) comprises a guide sleeve into which the guide column can extend; And / or, at least two first guide portions (91) are arranged at intervals on the side punching structure (3), and at least two second guide portions (92) are arranged at intervals on the limiting wall (42), and the first guide portions (91) and the second guide portions (92) are arranged in a one-to-one correspondence.

13. The stamping die according to any one of claims 1 to 11, characterized in that: There are two side punching structures (3), and the two side punching structures (3) are arranged on both sides of the limiting wall (42). The side of the limiting wall (42) facing each side punching structure (3) is provided with the avoidance channel (421). There are two driving members (5), and one driving member (5) corresponds to one side punching structure (3). A discharge channel (422) is provided in the limiting wall (42), and the discharge channel (422) is communicated with all the avoidance channels (421).

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