CN215587631U - Stamping module - Google Patents

Abstract

The utility model discloses a stamping module, which comprises a first male die and a second male die, wherein a first punch is arranged on the first male die, and a second punch is arranged on the second male die. The first punch and the second punch can be spliced into a punch forming working surface to punch a punched product. The first punch moves up and down along the longitudinal direction, the first punch generates thrust to the second punch through the contact surface with the second punch, so that the second punch can move in the transverse horizontal direction, and the avoidance of a lateral small forming structure of a punched product can be realized, so that the punched product is separated from the punching die set. This punching press module has under the bellied condition of side direction at stamping product, moves the setting through two terrace dies dislocation, can realize with stamping product's accurate separation, and then can improve stamping product's quality.

Description

Stamping module

Technical Field

The utility model relates to the technical field of processing, in particular to a stamping module.

Background

Modern industry is rapidly developing and the structures and types of current stamped products are increasingly diversified to meet production requirements. Under the influence of the performance (such as the grain direction) requirements of the stamping product, the process requirements and other factors, the situation that the local forming direction of the stamping product is not parallel to the stamping direction of the stamping die often occurs, so that the problem that the local small forming structure of the stamping product in the final shape cannot be separated from the stamping die in the opening/closing process of the stamping die, namely, the lateral small forming stripping is difficult is caused.

The prior art generally releases stamped articles having a laterally partial formation in the following manner:

1. and sliding stripping parallel to the lateral partial forming direction. In this method, when the material is removed by sliding, an inclined pushing punch is required, which has a moving direction consistent with the opening/closing direction of the stamping die, and the stamping die is pushed by the inclined pushing punch to slide in the direction perpendicular to the opening/closing direction, thereby separating the stamped product from the stamping die. However, in the sliding stripping process, sliding friction is generated between the stamping die and the stamped product, and the stamped product is scratched.

2. And avoiding the whole lateral local forming along the opening/closing direction of the stamping die. The overall space for avoiding the mold part is much larger than the lateral small forming space, so that the strength of the mold part can be reduced. And the avoiding area and the forming area are crossed to influence the forming stress state of the area, so that the stamped product is deformed, and the quality of the stamped product is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a stamping module, which moves a first male die and a second male die to avoid a lateral partially-formed portion of a stamped product, so as to realize accurate separation from the stamped product and improve the quality of the stamped product.

The stamping module of the embodiment of the utility model comprises: the first male die is convexly provided with a first punch; the second punch is convexly provided with a second punch head, the second punch head is positioned on one side of the first punch head, and the second punch head transversely and horizontally moves relative to the first punch head; wherein the first male die is configured to be controlled to move along the longitudinal direction and push the second male die to move horizontally along the transverse direction, so that the second punch is attached to the first punch and is arranged in a longitudinally-staggered mode for demolding.

In some embodiments, the first male die comprises a first extending portion, a first connecting portion and a first protruding portion, the first extending portion and the first protruding portion are connected into a whole through the first connecting portion, a first connecting groove with a downward opening is formed between the first extending portion and the first protruding portion, and the first punch is arranged below the first extending portion in a protruding mode; the second male die comprises a second extending part, a second connecting part and a second protruding part, the second extending part and the second protruding part are connected into a whole through the second connecting part, a second connecting groove with an upward opening is formed between the second extending part and the second protruding part, and the second punch is arranged below the second protruding part in a protruding mode; the first protruding portion is controlled to move longitudinally and is inserted into the second connecting groove, the first protruding portion pushes the second protruding portion to move along the transverse horizontal direction to one side where the first extending portion is located, and therefore the second protruding portion is attached to the first extending portion, the second punch is attached to the first punch, and the bottom surface of the first protruding portion is attached to the bottom surface of the second connecting groove.

In some embodiments, the first protruding portion is controlled to move out of the second connecting groove along the longitudinal direction, the first protruding portion pushes the second extending portion to move along the transverse direction and horizontally back to one side of the first extending portion, so that a gap is formed between the second protruding portion and the first extending portion, and the second punch is attached to the bottom of the first punch to form a punch forming working face.

In some embodiments, the first protrusion comprises a first vertical surface, a first inclined surface and a second vertical surface which are connected in sequence, the first vertical surface is connected with the bottom surface of the first connecting part, and the first inclined surface extends downwards and slantwise to one side back to the first extending part; the second protruding portion comprises a third vertical surface and a second inclined surface which are connected, the third vertical surface is connected with the bottom surface of the second connecting portion, the second inclined surface faces back to one side of the second extending portion in an inclined mode and extends upwards, and the height of the second vertical surface is smaller than that of the third vertical surface.

In some embodiments, the first protrusion further comprises a fourth vertical surface and a third inclined surface which are connected, the fourth vertical surface and the third inclined surface are arranged on the side of the first protrusion, which faces away from the first extension part, the fourth vertical surface is connected with the bottom surface of the first protrusion, and the third inclined surface extends upwards and slantwise towards the side of the first extension part; the second extending portion comprises a fifth vertical surface and a fourth inclined surface which are connected, the fifth vertical surface is connected with the bottom surface of the second connecting groove, and the fourth inclined surface extends upwards towards one side of the second protruding portion in an inclined mode.

In some embodiments, the first punch comprises a sixth vertical surface and a fifth inclined surface which are connected in sequence, the sixth vertical surface extends from the first extension, and the fifth inclined surface extends obliquely downwards to the side opposite to the first extension; the second punch comprises a seventh vertical surface and a sixth inclined surface which are sequentially connected, the seventh vertical surface extends out of the second protruding portion, and the sixth inclined surface extends downwards towards one side of the second extending portion in an inclined mode.

In some embodiments, the first punch further comprises an eighth vertical surface, a seventh inclined surface and a first curved surface which are connected in sequence, the eighth vertical surface is connected with the fifth inclined surface, the seventh inclined surface extends obliquely downwards to the side back to the first extending part, and the first curved surface is positioned on the side of the first punch back to the second punch; the second punch further comprises a second curved surface, the second curved surface is connected with the sixth inclined surface, and the second curved surface is positioned on one side, back to the first punch, of the second punch; first bellying is controlled along vertical rebound, the fifth inclined plane promotes the sixth inclined plane is in order to drive the second drift is along horizontal dorsad one side of first drift removes, extremely the seventh inclined plane with the laminating of sixth inclined plane the eighth vertical face with the laminating of seventh vertical face, the sixth vertical face with have the clearance between the seventh vertical face and first curved surface with the second curved surface is connected and is formed stamping forming working face.

In some embodiments, the first protrusion further comprises an eighth inclined surface and a ninth vertical surface connected, the eighth inclined surface is connected with the second vertical surface, and the eighth inclined surface extends obliquely downwards to a side facing away from the first extension part; the second protruding portion further comprises a tenth vertical surface and a ninth inclined surface which are connected, the tenth vertical surface is connected with the second inclined surface, and the ninth inclined surface extends upwards in an inclined mode towards one side back to the second extending portion.

In some embodiments, the first protrusion further comprises an eleventh vertical surface and a tenth slope surface connected, the eleventh vertical surface being connected with the third slope surface, the tenth slope surface extending obliquely upward to a side toward the first extension; the second extending part further comprises a twelfth vertical surface and an eleventh inclined surface which are connected, the twelfth vertical surface is connected with the fourth inclined surface, and the eleventh inclined surface extends upwards in an inclined mode towards one side of the second protruding part.

In some embodiments, the first protrusion further comprises a thirteenth vertical surface, a twelfth inclined surface, a fourteenth vertical surface and a thirteenth inclined surface which are connected in sequence, the thirteenth vertical surface is arranged on one side of the first protrusion, which is away from the first extending portion, and is connected with the top surface of the first protrusion, and the twelfth inclined surface and the thirteenth inclined surface extend obliquely downwards towards one side, which is away from the first extending portion; the second extending part further comprises a fifteenth vertical surface and a fourteenth inclined surface which are connected, the fifteenth vertical surface is arranged on one side, facing the second protruding part, of the second extending part and is connected with the top surface of the second extending part, and the fourteenth inclined surface extends downwards in an inclined mode towards one side, back to the second protruding part.

In some embodiments, the second punch has a lateral movement through hole; the stamping module further comprises: the plate stripping main body comprises a moving through groove and a connecting through groove which are communicated, the first male die and the second male die are arranged in the moving through groove, and the connecting through groove is communicated with the transverse moving through hole; the second male die and the stripper plate body are connected through the connecting through groove and the transverse moving through hole by the stop block, and the width of the transverse moving through hole is larger than that of the stop block so that the second male die horizontally moves in the transverse direction relative to the first male die.

In some embodiments, the stamping die set further comprises: a top rod positioned above the first male die, wherein the top rod is configured to controllably push the first male die to move along the longitudinal direction; the elastic piece is arranged on the ejector rod and is configured to drive the first male die to reset through the ejector rod so as to punch; the die is provided with a stamping groove matched with the stamping forming working surface, and the die is positioned below the first male die and the second male die.

The stamping module disclosed by the embodiment of the utility model comprises a first male die and a second male die, wherein a first punch is arranged on the first male die, and a second punch is arranged on the second male die. The first punch and the second punch can be spliced into a punch forming working surface to punch a punched product. The lateral direction of the punched product is provided with a local bulge, and then the local bulge can be avoided through the movement of the second punch, so that the punched product is separated. The second punch can move up and down through the first punch, the first punch moves up and down along the longitudinal direction, the first punch generates thrust to the second punch through a contact surface with the second punch, the second punch can move in the transverse horizontal direction, and then the second punch can be separated from a local bulge in a punched product, and therefore falling-off of the punched product can be completed. By the aid of the stamping module, the stamping product can be accurately separated from the stamping product under the condition that the stamping product is provided with the lateral protrusions, and accordingly quality of the stamping product can be improved.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 is a related art stripper module;

FIG. 2 is a schematic view of a stamping die set according to an embodiment of the utility model;

FIG. 3 is a cross-sectional view of a stamping die set according to an embodiment of the utility model;

FIG. 4 is a schematic view of a stamping die set according to an embodiment of the utility model;

FIG. 5 is a schematic view of a first male mold according to an embodiment of the utility model;

FIG. 6 is a schematic view of a second punch according to an embodiment of the present invention;

FIG. 7 is a schematic view of a first positional relationship of a stamping die set according to an embodiment of the present invention;

FIG. 8 is a schematic diagram illustrating a second positional relationship of the stamping die set according to an embodiment of the present invention;

FIG. 9 is a schematic view of a first male die of another embodiment of the utility model;

FIG. 10 is a schematic view of a second male die according to another embodiment of the utility model;

FIG. 11 is a schematic view of a first positional relationship of a stamping die set according to another embodiment of the present invention;

FIG. 12 is a second position relationship of the stamping die set according to another embodiment of the present invention;

FIG. 13 is a schematic view of a stripper body according to an embodiment of the utility model;

fig. 14 is a schematic view of a stamped article according to an embodiment of the utility model.

Detailed Description

In the art, since a certain face of a stamped product to be completed has two planes which are not parallel, a stamping die is also required to have a form matching such a stamped product. However, when the press die has two non-parallel surfaces, the press product may be difficult to separate during the stripping process.

In the related art, a method of avoiding a lateral small forming whole is adopted. As shown in fig. 1, fig. 1 is a schematic diagram of a related art of lateral partial forming stripping. In fig. 1, a punched product 1 is punched by a punch 2 and a die 3, and the punch 2 is pressed against the die 3 from the direction shown in fig. 1. One side of the stamped product 1 has a lateral forming part 11 protruding from the body of the stamped product 1, because the lateral forming part 11 and the other part 12 on the same side have a front-rear position difference in a direction perpendicular to the moving direction of the punch 2. Therefore, when the press die is separated from the press product 1, the lateral forming portion 11 needs to be set aside.

The relief can be achieved by providing a recess 21 in the punch 2 at a position corresponding to the lateral profile 11. The depth of the depression of the depressed portion 21 is the same as the difference in the front-rear position of the lateral forming portion 11 and the other portion 12 on the same side in the direction perpendicular to the moving direction of the punch 2. The length of the recess 21 in the moving direction of the punch 2 is the same as the length of the punch 22 of the punch 2. Further, since the press die is provided with the recessed portion 21 when being separated from the press product 1, the press die can move the punch 2 upward, thereby completing the separation from the press product 1.

When the knockout is performed using the punch 2 shown in fig. 1, the clearance space formed by the recess 21 is larger than the clearance space required for the side forming portion 11, and therefore the accuracy of the die component is lowered. And because there is unnecessary space of keeping away, terrace die 2 and stamping product 1 can not laminate completely, and when the region of not laminating receives the exogenic action, the corresponding part of stamping product 1 can take place to warp, and then can influence the quality of stamping product 1.

An embodiment of the present invention provides a stamping die set, as shown in fig. 2 and 3. The stamping die set of the embodiment of the utility model comprises a first male die 1 and a second male die 2. Wherein, a first punch 11 is arranged on the first punch 1, and a second punch 21 is arranged on the second punch 2.

The second punch 2 is disposed on one side of the first punch 1, and the second punch 21 is disposed opposite to the first punch 11. The first punch 1 and the second punch 2 can be connected in a sliding mode, and the second punch 2 can move horizontally in the transverse direction under the condition that the first punch 1 is controlled to move longitudinally. Namely, the first male die 1 is controlled to move longitudinally, and the first male die 1 pushes the second male die 2 to move horizontally in the transverse direction through the sliding connection device. The sliding connection means may be a slide groove, for example, a connection between the first punch 1 and the second punch 2 via an inclined slide groove.

In one case, the first punch 1 is controlled to move upwards, and the first punch 1 pushes the second punch 2 to move along the transverse horizontal direction to the side far away from the first punch 1. The first punch 11 and the second punch 21 are separated by a certain distance, and the bottom parts of the first punch 11 and the second punch 21 are flush to form a punch forming working surface.

In another case, the first punch 1 is controlled to move downwards, and the first punch 1 pushes the second punch 2 to move horizontally to the side close to the first punch 1 in the transverse direction. The first punch 11 and the second punch 21 are attached, and the bottom parts of the first punch 11 and the second punch 21 are distributed in a staggered mode in the longitudinal direction. And then can make punching press goods 8 drop, break away from the in-process, punching press module and punching press goods 8 do not produce relative slip, and then punching press goods 8 can not produce the mar, also need not other appurtenance, convenient operation.

When the stamping module provided by the embodiment of the utility model is used for stripping, the second male die 2 is driven to horizontally move along the transverse direction by the up-and-down movement of the first male die 1, so that the first punch 11 and the second punch 21 can be attached to each other or separated by a certain distance in the horizontal direction, and meanwhile, the bottoms of the first punch and the second punch can be distributed in a staggered manner or distributed in a flush manner in the vertical direction. The forming of the punched article 8 can be done with the first punch 11 and the second punch 21 spaced apart in the horizontal direction and distributed flush at the bottom in the vertical direction. When the first punch 11 and the second punch 21 are attached to each other in the horizontal direction and are arranged with the bottom portions thereof displaced in the vertical direction, they can be detached from the pressed product 8.

According to the punching die set of the embodiment of the utility model, the relative position relationship between the first punch 1 and the second punch 2 is changed, and further the relative position relationship between the first punch 11 and the second punch 21 is changed, so that the punched product 8 is punched or separated by utilizing the different position relationship between the first punch 11 and the second punch 21. Unlike the related art that a large-range clearance area needs to be provided on the first punch 11 or the second punch 21 to separate the punched product 8, the punching module according to the embodiment of the present invention punches or separates the punched product 8 by using the positional relationship between the first punch 11 and the second punch 21, so that the range of the clearance area can be reduced, the degree of adhesion between the punched product 8 and the first punch 11 and the second punch 21 can be further improved, and the quality of the punched product 8 can be further improved.

Figure 4 schematically shows a front view of the first punch 1 and the second punch 2. As shown in fig. 4, according to an embodiment of the present invention, the first punch 1 may include a first extension portion 12, a first connecting portion 13, and a first boss portion 14. The second male die 2 may include a second extension portion 22, a second connecting portion 23, and a second boss portion 24.

The first extension portion 12, the first connection portion 13, and the first protrusion portion 14 are rectangular solids, and the first extension portion 12 and the first protrusion portion 14 are connected as a whole by the first connection portion 13. The first extension portion 12, the first connection portion 13, and the first projection portion 14 have the same length in the Z axis, and the length in the X axis is not limited. The length of the first extension portion 12 and the first projection portion 14 in the Y axis is greater than the length of the first connection portion 13 in the Y axis, as shown in fig. 2. Further, a first connecting groove 15 opened downward is formed between the first extension portion 12 and the first boss portion 14. The first punch 11 is arranged to protrude below the first extension 12, preferably, the first punch 11 is arranged to protrude below the first extension 12 on the side close to the second punch 2, and the length of the first punch 11 in the Z axis is the same as the length of the first extension 12 in the Z axis.

The second extension portion 22, the second connection portion 23, and the second protrusion portion 24 may be rectangular solids, and the second extension portion 22 and the second protrusion portion 24 are integrally connected by the second connection portion 23. The second extension portion 22, the second connection portion 23, and the second protrusion portion 24 may have the same length in the Z-axis, and may have the same length in the Z-axis as the first extension portion 12, the first connection portion 13, and the first protrusion portion 14. The lengths of the second extending portion 22, the second connecting portion 23 and the second protruding portion 24 on the X axis are not limited, and the lengths of the three portions may be the same or different. The length of the second extending portion 22 and the second projecting portion 24 in the Y axis is greater than the length of the second connecting portion 23 in the Y axis, whereby a second connecting groove 25 opening upward is formed between the second extending portion 22 and the second projecting portion 24.

According to an embodiment of the present invention, the second extension 22 may be disposed in the same vertical direction as the first connection portion 13, that is, a portion of the second extension 22 may be located in the first connection groove 15. Meanwhile, the first projecting portion 14 may also be disposed in the same vertical direction as the second connecting portion 23, i.e., a portion of the first projecting portion 14 is located within the second connecting groove 25.

According to an embodiment of the present invention, the second punch 21 may be provided to protrude below the second boss portion 24. Preferably, the second punch 21 may be protruded below the second boss 24 on a side close to the first punch 1, and the length of the second punch 21 in the Z axis is the same as the length of the second boss 24 in the Z axis.

According to the embodiment of the present invention, the first protruding portion 14 is controlled to move in the longitudinal direction and be inserted into the second connecting groove 25, the first protruding portion 14 can push the second protruding portion 24 to move horizontally in the lateral direction to the side where the first extending portion 12 is located, so that the second protruding portion 24 abuts against the first extending portion 12, the second punch 21 abuts against the first punch 11, and the bottom surface of the first protruding portion 14 abuts against the bottom surface of the second connecting groove 25.

According to the embodiment of the utility model, when the first protruding part 14 is controlled to move out of the second connecting groove 25 in the longitudinal direction, the first protruding part 14 pushes the second extending part 22 to move horizontally back to the side of the first extending part 12 in the transverse direction, so that a gap is formed between the second protruding part 24 and the first extending part 12, and the second punch 21 is attached to the bottom of the first punch 11 to form a punch forming working surface.

Fig. 5 schematically shows a front view of the first male die 1 of an embodiment of the utility model. As shown in fig. 5, according to an embodiment of the present invention, a first vertical surface 141, a first inclined surface 142, and a second vertical surface 143, which are connected in sequence, may be included at a side of the first boss 14 adjacent to the first extension 12.

Wherein the first vertical surface 141 may be connected with a bottom surface of the first connection portion 13, the first vertical surface 141 extending toward the first punch 11. The first inclined surface 142 extends obliquely downward toward a side facing away from the first extending portion 12. The second vertical surface 143 is connected to the first vertical surface 141 by the first slope 142, and the second vertical surface 143 extends toward the first punch 11. The heights of the first vertical surface 141, the first inclined surface 142, and the second vertical surface 143 in the Y axis are not limited herein. The angle at which the first inclined surface 142 is inclined is not limited herein. Preferably, the first slope 142 is inclined at an angle between 30 ° and 60 °.

Figure 6 schematically shows a front view of the second punch 2 of an embodiment of the utility model. As shown in fig. 6, according to an embodiment of the present invention, the second boss 24 may include a third vertical surface 241 and a second inclined surface 242 connected thereto. The third vertical surface 241 is connected to the bottom surface of the second connecting portion 25, the third vertical surface 241 is connected to the top surface of the first connecting portion 13, and the third vertical surface 241 extends toward the first connecting portion 13. The second inclined surface 242 extends obliquely upward toward a side facing away from the second extending portion 22. The second slope 242 is inclined at the same angle as the first slope 142.

Preferably, the lengths of the first slope 142 and the second slope 242 are the same, so that the first slope 142 and the second slope 242 can be completely attached. The height of the second vertical surface 143 is smaller than that of the third vertical surface 241, and the first protruding portion 14 is controlled to move downward in the vertical direction on the basis that the first inclined surface 142 is completely attached to the second inclined surface 242 and the second vertical surface 143 is attached to the third vertical surface 241, so that the second vertical surface 143 can have a space to move downward. In addition, the sum of the height of the first inclined surface 142 in the vertical direction and the height of the second vertical surface 143 may be the same as or different from the height of the third vertical surface 241.

According to the embodiment of the present invention, when the first protruding portion 14 is controlled to move in the longitudinal direction and inserted into the second connecting groove 25, the first inclined surface 142 is controlled to move downwards in the longitudinal direction on the basis that the first inclined surface 142 completely abuts against the second inclined surface 242, and the second vertical surface 143 abuts against the third vertical surface 241, and the second inclined surface 242 is pushed by the first inclined surface 142, so that the second inclined surface 242 can drive the second protruding portion 24 to move horizontally in the transverse direction to the side where the first extending portion 12 is located.

According to an embodiment of the present invention, an elastic element, which may be a spring, for example, may be disposed between the first extension 12 and the second boss 24. For example, when the first protruding portion 14 is controlled to move in the longitudinal direction to be inserted into the second coupling groove 25, the second protruding portion 24 moves horizontally in the lateral direction to the side where the first extending portion 12 is located, thereby compressing the spring. And, when the first protruding part 14 is moved out of the second connecting groove 25 in the controlled longitudinal movement, the spring generates the elastic force to push the second protruding part 24 to move in the lateral horizontal direction to the side far away from the first extending part 12.

As shown in fig. 5, according to an embodiment of the present invention, the first boss 14 may further include a fourth vertical surface 144 and a third inclined surface 145 connected thereto. The fourth vertical surface 144 and the third inclined surface 145 are disposed on a side of the first protruding portion 14 facing away from the first extending portion 12, that is, on a contact surface of the first protruding portion 14 and the second extending portion 22. The fourth vertical surface 144 is connected to the bottom surface of the first projecting portion 14, and the fourth vertical surface 144 extends toward the side away from the second connecting portion 23. The third slope 145 extends obliquely upward toward the side of the first extension 12. The heights of the fourth vertical surface 144 and the third inclined surface 145 in the Y-axis direction are not limited herein. The angle at which the third slope 145 is inclined is not limited herein, and preferably, the angle at which the third slope 145 is inclined is between 30 ° and 60 °.

As shown in fig. 6, according to an embodiment of the present invention, the second extension 22 may include a fifth vertical surface 221 and a fourth slope surface 222 connected. The fifth vertical surface 221 is connected to the bottom surface of the second connecting groove 23, and the fifth vertical surface 221 extends toward a side toward the first extending portion 14. The fourth slope 222 extends obliquely upward toward the side toward the second boss 24. Preferably, the height of the fifth vertical surface 221 is the same as the height of the fourth vertical surface 144, and the length and the inclination angle of the fourth slope 222 are the same as those of the third slope 145.

According to the embodiment of the present invention, as shown in fig. 7 and 8, when the first protruding part 14 is controlled to be moved in the longitudinal direction to be inserted into the second coupling groove 25, the second protruding part 24 is moved in the lateral direction horizontally to the side where the first extending part 12 is located, until the fourth inclined surface 222 is completely attached to the third inclined surface 145, and the fifth vertical surface 221 is completely attached to the fourth vertical surface 144. When the first protruding portion 14 is moved out of the second connecting groove 25 in the controlled longitudinal movement, the third inclined surface 145 moves upward in the longitudinal direction, and a pushing force is generated to push the fourth inclined surface 222, and the fourth inclined surface 222 drives the second extending portion 22 to move horizontally in the lateral direction to the side far away from the first extending portion 12.

As shown in fig. 5, according to an embodiment of the present invention, the first punch 11 may include a sixth vertical surface 111 and a fifth inclined surface 112 connected in sequence. The sixth vertical surface 111 may extend from a side of the first extension portion 12 close to the first connection portion 13, that is, the sixth vertical surface 111 and a surface of the first extension portion 12 close to the first connection portion 13 may be connected to form a same plane. The fifth inclined surface 112 has one side connected to the sixth vertical surface 111 and the other side extending obliquely downward away from the first extending portion 14. The heights of the sixth vertical surface 111 and the fifth inclined surface 112 in the Y axis are not limited herein, and the angle at which the fifth inclined surface 112 is inclined is not limited herein.

As shown in fig. 6, according to an embodiment of the present invention, the second punch 21 may include a seventh vertical surface 211 and a sixth inclined surface 212 which are connected in sequence. The seventh vertical surface 211 may extend from a side of the second boss 24 close to the first punch 11, that is, the seventh vertical surface 211 and a side of the second boss 24 close to the first punch 11 may be connected to be the same plane. The sixth slope 212 extends obliquely downward toward the side of the second extension 22. The heights of the seventh vertical surface 211 and the sixth inclined surface 212 in the Y axis are not limited herein, and the angle at which the sixth inclined surface 212 is inclined is not limited herein. Preferably, the height of the seventh vertical surface 211 is the same as the height of the sixth vertical surface 111, and the length and the inclination angle of the sixth inclined surface 212 are the same as those of the fifth inclined surface 112.

According to the embodiment of the present invention, as shown in fig. 7, when the first protruding portion 14 is controlled to be moved in the longitudinal direction and inserted into the second connecting groove 25, the second protruding portion 24 is moved horizontally in the lateral direction to the side where the first extending portion 12 is located until the sixth vertical surface 111 abuts against the seventh vertical surface 211 and the fifth inclined surface 112 abuts against the sixth inclined surface 212.

As shown in fig. 5, according to an embodiment of the present invention, the first punch 11 may further include an eighth vertical surface 113, a seventh inclined surface 114, and a first curved surface 115, which are sequentially connected. The eighth vertical surface 113 is connected to the fifth inclined surface 112, and the eighth vertical surface 113 extends toward a side facing away from the first extending portion 12. The seventh inclined surface 114 extends obliquely downward toward a side facing away from the first extending portion 12. The first curved surface 115 may include a first curved surface portion and a first vertical portion, one side of the first curved surface portion is connected to the seventh inclined surface 114, the first curved surface portion extends toward a side facing away from the second punch 21, the other side of the first curved surface portion is connected to one side of the first vertical portion, and the other side of the first vertical portion is connected to the first extending portion 12 in an intersecting manner. The shape of the first curved surface portion projected on the vertical plane may be a quarter of a circular arc, or other shapes.

As shown in fig. 6, according to an embodiment of the present invention, the second punch 21 may further include a second curved surface 213. The second curved surface 213 may include a second curved surface portion and a second vertical portion, one side of the second curved surface portion is connected to the sixth inclined surface 212, the second curved surface portion extends toward a side facing away from the first punch 11, the other side of the second curved surface portion is connected to one side of the second vertical portion, and the other side of the second vertical portion is connected to the second protruding portion 24 in an intersecting manner. The shape of the projection of the second curved surface portion on the vertical plane may be a quarter of a circular arc, or other shapes. The second curved surface portion is provided with a groove 2131, the groove 1231 can be used for placing a lateral recess 81 in the stamped product 8, and the length, width and depth of the groove 1231 are matched with the lateral recess 81, as shown in fig. 14.

According to the embodiment of the present invention, as shown in fig. 7 and 8, when the first protruding portion 14 is moved out of the second connecting groove 25 in the longitudinal direction, the fifth inclined surface 112 is subjected to a force moving upward in the longitudinal direction, and the sixth inclined surface 212 is pushed to move toward the side away from the first punch 11. The sixth inclined surface 212 drives the second punch 21 to move towards the side back to the first punch 11 until the seventh inclined surface 114 is attached to the sixth inclined surface 212, the eighth vertical surface 113 is attached to the seventh vertical surface 211, a gap is formed between the sixth vertical surface 111 and the seventh vertical surface 211, and the first curved surface 115 is connected with the second curved surface 213 to form a punch forming working surface. The first curved surface 115 is connected with the second curved surface 213, and the projection of the connected forming part on the vertical surface may be a half circular arc.

According to the embodiment of the present invention, the second punch 2 has the lateral transfer through-hole 26, and the lateral transfer through-hole 26 may be a rectangular parallelepiped penetrating the second punch 2 in the Z-axis direction, and the length and width of the cross section of the lateral transfer through-hole 26 are not limited herein.

According to an embodiment of the present invention, the punching die set may further include a stripper body 3. Fig. 9 is a perspective view of the stripper body 3. As shown in fig. 9, the stripping plate body 3 may be a rectangular parallelepiped with a hollow center, and the stripping plate body 3 may include a moving through groove 31 and a connecting through groove 32.

The movable through groove 31 can be used for placing the first male die 1 and the second male die 2, and the shape of the movable through groove 31 is matched with that of the first male die 1 and the second male die 2. The height of the moving channel 31 in the Y axis may be the same as the height of the first punch 1 and the second punch 2 in the Y axis. The length of the moving channel 31 in the Z axis may be the same as the length of the first punch 1 and the second punch 2 in the Z axis, so as to fix the first punch 1 and the second punch 2 and prevent the first punch 1 and the second punch 2 from being displaced in the Z axis direction. The connecting through-slots 32 are positioned to correspond to the lateral shift through-holes 26.

According to an embodiment of the utility model, the punching die set may further comprise a stopper 4. The connecting through-groove 32 is disposed opposite to the lateral movement through-hole 26 so that the stopper 4 can pass through the connecting through-groove 32 and the lateral movement through-hole 26. The length and width of the cross section of the stopper 4 are the same as those of the cross section of the connecting through groove 32. The width of the cross section of the lateral movement through hole 26 is larger than that of the connecting through groove 32 so that the second punch 2 can move horizontally in the lateral direction with respect to the first punch 1.

Further, the length of the moving channel 31 in the X axis is greater than the sum of the lengths of the first punch 1 and the second punch 2 in the X axis. Further, one side of the first extension 12 of the first punch 1 may be placed in close contact with one side of the moving through groove 31, and in a case where the sixth vertical surface 111 is in contact with the seventh vertical surface 211, there may be a certain gap between one side of the second extension 22 and the other side of the moving through groove 31. The width of the gap may be the same as the difference in length of the stop block 4 and the lateral displacement through hole 26 in the X-axis. The width of the gap may also be the same as the depth of the recess of the lateral recessed portion 81 of the punched product 8 to the first punch 11 side, or slightly larger than the depth of the recess of the lateral recessed portion 81 to the first punch 11 side.

According to an embodiment of the present invention, the punching die set may further include a ram 5, an elastic member 6, and a die 7.

The carrier rod 5 may be located above the first punch 1. The mandril 5 is used for controllably pushing the first male die 1 to move along the longitudinal direction. The ejector rod 5 can be a cylinder and is fixedly connected with the first male die 1.

The elastic part 6 can be arranged on the mandril 5, and the elastic part 6 can drive the first male die 1 to reset through the mandril 5 for punching. The elastic member 6 may be a spring, for example. The top of elastic component 6 can set up the fixed plate, and elastic component 6 produces elastic deformation under the condition that the interval of ejector pin 5 and fixed plate diminishes, and then can make the interval between ejector pin 5 and the fixed plate recover.

The female die 7 is positioned below the first male die 1 and the second male die 2, and the female die 7 is provided with a stamping groove matched with the stamping working surface. The punched article 8 may be placed on the die 7 and the punched article 8 may be punched using the first punch 1 and the second punch 2.

As shown in fig. 7 and 8, in the embodiment of the present invention, the press-formed product 8 is pressed by the press-forming work surface formed by the first punch 11 and the second punch 21. In use, the stamped product 8 to be completed may be placed on the female die 7. The initial state of the first punch 1 and the second punch 2 is shown in fig. 7. The upper end of the elastic part 6 can be provided with a control part, and the control part is fixedly connected with the elastic part 6 and can drive the first male die 1, the second male die 2, the ejector rod 5 and the elastic part 6 to move downwards to the female die 7 so as to punch the punched part 8. The matrix 7 can be placed on a fixed plane. When the second male die 2 moves downwards, the first punch contacts the female die 7 and keeps a relative static state with the female die 7, and the second male die 2, the ejector rod 5 and the control piece of the elastic piece 6 still continue to move downwards, so that the distance between the control piece and the first male die 1 is reduced, and the elastic piece 6 is compressed.

The first punch 1 is held stationary relative to the holding die 7 while the second punch 2 is moved downwardly relative to the holding die 7, and it can be considered that the first punch 1 is moved upwardly relative to the second punch 2. In the case where the first punch 1 is moved upward, the third slope 145 is moved upward in the longitudinal direction, pushing the fourth slope 222, and the fifth slope 112 is moved upward in the longitudinal direction pushing the sixth slope 212. Since the second punch 2 can move in the X-axis direction, during the upward movement of the first punch 1, the first punch 1 can push the second punch 2 to the side away from the first punch 1 until the seventh inclined surface 114 and the sixth inclined surface 212 abut, the eighth vertical surface 113 abuts the seventh vertical surface 211, the second vertical surface 143 abuts the third vertical surface 241, the first inclined surface 142 and the second inclined surface 242 abut, and the bottoms of the first curved surface 115 and the second curved surface 213 are flush. Thereby, the press-formed product 8 can be pressed by the press-forming work surface formed by the first curved surface 115 and the second curved surface 213. At the same time, in the case where the second punch 2 is moved to the side facing away from the first punch 1, the second punch 2 can also complete the punching of the punched article 8 in the lateral direction, as shown in fig. 14. At this time, the state of the first punch 1 and the second punch 2 is as shown in fig. 8, and the elastic member 6 is in a compressed state at this time.

When the punching die set of the embodiment of the utility model is used for stripping, the female die 7 can move downwards and is separated from the punched product 8, the first punch 11 and the second punch 21. Alternatively, the control member can drive the first punch 1, the second punch 2, the ejector rod 5 and the elastic member 6 to move upwards. When the first punch 1 and the second punch 2 are separated from the die 7, the elastic member 6 is restored, and the elastic force generated by the elastic member moves the first punch 1 downward.

During the downward movement of the first punch 1, the first slope 142 pushes the second slope 242 to move toward the side of the first punch 1. That is, the first punch 1 moves downwards to push the second punch 2 to move towards one side of the first punch 1 until the sixth vertical surface 111 and the seventh vertical surface 211 are jointed, the fifth inclined surface 112 is jointed with the sixth inclined surface 212, the fifth vertical surface 221 is jointed with the fourth vertical surface 144, and the third inclined surface 145 is jointed with the fourth inclined surface 222. At this time, since the second punch 2 is moved toward the side of the first punch 1 by a certain distance, the recessed groove 2131 of the second punch 21 is separated from the lateral recessed portion 81 in the punched product 8, whereby the punched product 8 can be detached from the first punch 1 and the second punch 2.

According to the embodiment of the utility model, the first male die 1 moves up and down to drive the second male die 2 to move in the transverse horizontal direction, so that the stamping and the separation of the stamped product 8 are completed. And a large-range avoiding area is not required to be arranged on the punch. In addition, when the stamping module provided by the embodiment of the utility model is used for stripping, the stamped product 8 can be quickly separated from the punch, long-time sliding friction is avoided, and the quality of the stamped product 8 can be further ensured.

As shown in fig. 10, according to the embodiment of the present invention, the first protrusion 14 may further include an eighth inclined surface 146 and a ninth vertical surface 147 connected, the eighth inclined surface 146 is connected with the second vertical surface 143, and the eighth inclined surface 146 extends obliquely downward toward a side away from the first extension portion 12. The ninth vertical surface 147 extends to a side facing away from the first extending portion 14. Preferably, the length and the inclination angle of the eighth slope 146 are the same as those of the first slope 142. The ninth vertical surface 147 has a height smaller than that of the third vertical surface 241.

As shown in fig. 11, according to the embodiment of the present invention, the second protruding portion 24 may further include a tenth vertical surface 243 and a ninth inclined surface 244 connected, the tenth vertical surface 243 is connected with the second inclined surface 242, and the tenth vertical surface 243 extends toward a side away from the second protruding portion 24. The ninth inclined surface 244 extends obliquely upward toward a side facing away from the second extending portion 22. Preferably, the length and the inclination angle of the ninth slope 244 may be the same as those of the second slope 242, and the length and the inclination angle of the first slope 142 and the eighth slope 146 may also be the same as those of the ninth slope 244. Preferably, the tenth vertical surface 243 may have the same height as the second vertical surface 143, and further, the ninth vertical surface 147 may have the same height as the tenth vertical surface 243.

As shown in fig. 12 and 13, according to the embodiment of the present invention, when the first protrusion 14 is inserted into the second coupling groove 25 by being controlled to move in the longitudinal direction, the eighth slope 146 pushes the second slope 242 and the first slope 142 pushes the ninth slope 244. Therefore, the second inclined surface 242 and the ninth inclined surface 244 can drive the second protrusion 24 to move horizontally along the lateral direction to the side where the first extension portion 12 is located until the bottom surface of the first extension portion 14 is attached to the top surface of the second connection portion 23.

As shown in fig. 10, according to an embodiment of the present invention, the first boss 14 may further include an eleventh vertical surface 148 and a tenth inclined surface 149 connected thereto. The eleventh vertical surface 148 is connected to the third inclined surface 145, and the eleventh vertical surface 148 extends to a side away from the second connecting portion 23. The tenth inclined surface 149 extends obliquely upward toward a side of the first extension portion 12. The height of the eleventh vertical surface 148 is not limited herein. Preferably, the length and the inclination angle of the tenth slope 149 are the same as those of the third slope 145.

As shown in fig. 11, according to an embodiment of the present invention, the second extension 22 may further include a connected twelfth vertical surface 223 and an eleventh inclined surface 224. The twelfth vertical surface 223 is connected to the fourth slope 222, and the twelfth vertical surface 223 extends to a side facing away from the second connection portion 23. The eleventh inclined surface 224 extends obliquely upward toward a side of the second convex portion. Preferably, the twelfth vertical surface 223 has the same height as the eleventh vertical surface 148 and the same height as the fourth vertical surface 144. The length and the inclination angle of the eleventh inclined surface 224 are the same as those of the tenth inclined surface 149.

As shown in fig. 12 and 13, according to the embodiment of the present invention, when the first protrusion 14 is moved out of the second connection slot 25 along the longitudinal movement, the third inclined surface 145 pushes the fourth inclined surface 222, and the tenth inclined surface 149 pushes the eleventh inclined surface 224 to move the second extension 22 along the lateral direction and horizontally back to the side where the first extension 12 is located.

As shown in fig. 10, according to an embodiment of the present invention, the first boss 14 may further include a thirteenth vertical surface 1410, a twelfth inclined surface 1411, a fourteenth vertical surface 1412 and a thirteenth inclined surface 1413, which are connected in sequence. A thirteenth vertical surface 1410 is provided at a side of the first boss 14 facing away from the first extension 12 and is connected to a top surface of the first boss 14, and the thirteenth vertical surface 1410 extends toward a side facing the second connecting portion 23. One side of the twelfth inclined surface 1411 is connected to the thirteenth vertical surface 1410 and extends obliquely downward toward a side facing away from the first extending portion 12, and the other side of the twelfth inclined surface 1411 is connected to the fourteenth vertical surface 1412. The fourteenth vertical surface 1412 extends toward a side toward the second connecting portion 23. A side of the thirteenth slope 1413 is connected to the fourteenth vertical surface 1412 and extends obliquely downward toward a side facing away from the first extension 12.

As shown in fig. 11, the second extension 22 may further include a fifteenth vertical surface 225 and a fourteenth inclined surface 226 connected according to an embodiment of the present invention. The fifteenth vertical surface 225 is provided on a side of the second extension portion 22 facing the second protrusion portion 24, is connected to the top surface of the second extension portion 22, and extends to a side facing the second connection portion 23. The fourteenth inclined surface 226 extends obliquely downward toward a side away from the second projecting portion 24.

According to an embodiment of the present invention, the inclination angles of the twelfth and thirteenth slopes 1411 and 1413 may be the same. Preferably, the twelfth and thirteenth slopes 1411 and 1413 have the same length and inclination angle. Further, the inclination angle of the fourteenth inclined surface 226 is the same as that of the twelfth inclined surface 1411, and the length of the fourteenth inclined surface 226 is the same as the sum of the lengths of the twelfth inclined surface 1411 and the thirteenth inclined surface 1413, so that when the first protruding portion 14 is located in the second connecting groove 25, the thirteenth vertical surface 1410 may be attached to the fifteenth vertical surface 225, and a portion of the fourteenth inclined surface 226 is attached to the twelfth inclined surface 1411. Alternatively, when the first protruding portion 14 moves out of the second connecting groove 25, the fifteenth vertical surface 225 abuts with the fourteenth vertical surface 1412, and a portion of the fourteenth inclined surface 226 abuts with the thirteenth inclined surface 1413.

According to an embodiment of the present invention, the twelfth ramp 1411 pushes the fourteenth ramp 226 when the first protrusion 14 is controlled to move in the longitudinal direction out of the second coupling groove 25. Therefore, the fourteen inclined planes 226 can drive the second protruding portions 24 to move horizontally back to the side where the first extending portion 12 is located along the transverse direction.

As shown in fig. 12 and 13, in the embodiment of the present invention, the punched product 8 may be punched by the punch forming work surface formed by the first punch 11 and the second punch 21. In use, the stamped product 8 to be completed may be placed on the female die 7. The initial position relationship of the first male die 1 and the second male die 2 is shown in fig. 12, a control member may be disposed at the upper end of the elastic member 6, and the control member is fixed to the elastic member 6 and may drive the first male die 1, the second male die 2, the ejector rod 5 and the elastic member 6 to move downward to the female die 7, so as to punch the punched article 8. The matrix 7 can be placed on a fixed plane.

When the first punch 1 moves downwards, under the condition that the first punch contacts the female die 7, the first punch 1 and the female die 7 are kept in a relatively static state, and the second punch 2, the ejector rod 5 and the elastic piece 6 still continue to move downwards, so that the distance between the control piece and the first punch 1 is reduced, and the elastic piece 6 is compressed.

In the case where the first punch 1 is moved upward, the third slope 145 is moved upward in the longitudinal direction to generate a pushing force to push the fourth slope 222, the tenth slope 149 to push the eleventh slope 224, the twelfth slope 1411 to push the fourteenth slope 226, and the fifth slope 112 to push the sixth slope 212. Thus, the fourth inclined surface 222, the eleventh inclined surface 224, the fourteenth inclined surface 226 and the sixth inclined surface 212 can drive the second punch 2 to push the second punch 2 to the side away from the first punch 1 until the seventh inclined surface 114 and the sixth inclined surface 212 are attached, the eighth vertical surface 113 is attached to the seventh vertical surface 211, the bottoms of the first curved surface 115 and the second curved surface 213 are flush, the fourth vertical surface 144 is attached to the twelfth vertical surface 223, the third inclined surface 145 is attached to the eleventh inclined surface 224, the thirteenth inclined surface 1413 is attached to the fourteenth inclined surface 226, and the fourteenth vertical surface 1412 is attached to the fifteenth vertical surface 225, as shown in fig. 13. In the case where the second punch 2 is moved to the side facing away from the first punch 1, the pressing of the side of the pressed article 8 can be completed, as shown in fig. 14.

When the punching die set of the embodiment of the utility model is used for stripping, the female die 7 can move downwards and is separated from the punched product 8, the first punch 11 and the second punch 21. The first punch 1 is moved downward by the elastic force generated by the elastic member 6. During the downward movement of the first punch 1, the first slope 142 pushes the ninth slope 244 and the eighth slope 146 pushes the second slope 242 to move toward the side of the first punch 1. Until the sixth vertical surface 111 and the seventh vertical surface 211 are jointed, the fifth inclined surface 112 and the sixth inclined surface 212 are jointed, the fifth vertical surface 221 and the fourth vertical surface 144 are jointed, the third inclined surface 145 and the fourth inclined surface 222 are jointed, the twelfth vertical surface 223 and the eleventh vertical surface 148 are jointed, the tenth inclined surface 149 and the eleventh inclined surface 224 are jointed, the twelfth inclined surface 1411 and the fourteenth inclined surface 226 are jointed, and the thirteenth vertical surface 1410 and the fifteenth vertical surface 225 are jointed. Further, the recessed groove 2131 of the second punch 21 is separated from the lateral recessed portion 81 in the punched product 8, whereby the punched product 8 can be detached from the first punch 1 and the second punch 2.

According to an embodiment of the present invention, the first protruding part 14 may further include other vertical surfaces and other inclined surfaces, and the second protruding part 24 may include corresponding vertical surfaces and inclined surfaces, so that when the first protruding part 14 is inserted into the second connecting groove 25, the first protruding part 14 may push the second protruding part 24 to move toward one side of the first extending part 12 through the other inclined surfaces. The first protrusion 14 may further comprise additional vertical and inclined surfaces, and the second extension 22 may comprise corresponding vertical and inclined surfaces, so that when the first protrusion 14 moves out of the second connection groove 25, the first protrusion 14 may push the second extension 22 to move towards the side facing away from the first extension 12 by the additional inclined surface.

According to the embodiment of the present invention, the moving direction of the first punch 1 is not limited to moving in the longitudinal direction, and the moving direction of the second punch 2 is not limited to moving horizontally in the lateral direction. For example, the first punch 1 may also be moved horizontally while the second punch 2 may be pushed to move longitudinally to punch the punched article 8. The direction of movement of the first punch 1 and the second punch 2 is not limited here.

According to an embodiment of the present invention, the stamping die set may further include other punches, and the other punches may be connected to the first punch 1 and/or the second punch 2. And, other punches can also slide relative to the first punch 1 and/or the second punch 2, for example, the first punch 1 moves upwards and can push the other punches to move downwards, and the other punches can push the second punch 2 to move towards the side opposite to the first punch 1. The number of other punches is not limited herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A stamping die set, comprising:

the first male die (1), the first male die (1) is convexly provided with a first punch (11); and

the second punch (2), a second punch head (21) is convexly arranged on the second punch (2), the second punch (2) is positioned on one side of the first punch (1), and the second punch (2) transversely and horizontally moves relative to the first punch (1);

wherein the first punch (1) is configured to be controlled to move longitudinally and push the second punch (2) to move horizontally in the transverse direction, so that the second punch (21) is attached to the first punch (11) and is arranged in a longitudinally-staggered manner for demoulding.

2. The punching die set according to claim 1, characterized in that the first punch (1) comprises a first extension portion (12), a first connecting portion (13) and a first protruding portion (14), the first extension portion (12) and the first protruding portion (14) are connected into a whole through the first connecting portion (13), a first connecting groove (15) with a downward opening is formed between the first extension portion (12) and the first protruding portion (14), and the first punch (11) is arranged below the first extension portion (12) in a protruding manner;

the second male die (2) comprises a second extending portion (22), a second connecting portion (23) and a second protruding portion (24), the second extending portion (22) and the second protruding portion (24) are connected into a whole through the second connecting portion (23), a second connecting groove (25) with an upward opening is formed between the second extending portion (22) and the second protruding portion (24), and the second punch (21) is arranged below the second protruding portion (24) in a protruding mode.

3. The punching die set according to claim 2, characterized in that the first protruding portion (14) is controlled to move out of the second connecting groove (25) along the longitudinal direction, the first protruding portion (14) pushes the second extending portion (22) to move along the lateral direction and horizontally back to the side of the first extending portion (12), a gap is formed between the second protruding portion (24) and the first extending portion (12), and the second punch (21) is attached to the bottom of the first punch (11) to form a punch forming working surface.

4. The punching die set according to claim 2, characterized in that the first boss (14) comprises a first vertical surface (141), a first inclined surface (142) and a second vertical surface (143) which are connected in sequence, the first vertical surface (141) is connected with the bottom surface of the first connecting portion (13), and the first inclined surface (142) extends obliquely downward to a side facing away from the first extending portion (12);

the second protruding portion (24) comprises a third vertical surface (241) and a second inclined surface (242), the third vertical surface (241) is connected with the bottom surface of the second connecting portion (23), the second inclined surface (242) extends upwards in an inclined mode towards one side back to the second extending portion (22), and the height of the second vertical surface (143) is smaller than that of the third vertical surface (241).

5. The stamping die set according to claim 4, wherein the first protruding portion (14) further comprises a fourth vertical surface (144) and a third inclined surface (145) connected, the fourth vertical surface (144) and the third inclined surface (145) are disposed on a side of the first protruding portion (14) facing away from the first extending portion (12), the fourth vertical surface (144) is connected with a bottom surface of the first protruding portion (14), and the third inclined surface (145) extends obliquely upward toward a side facing the first extending portion (12);

the second extending portion (22) comprises a fifth vertical surface (221) and a fourth inclined surface (222) which are connected, the fifth vertical surface (221) is connected with the bottom surface of the second connecting groove (25), and the fourth inclined surface (222) extends upwards in an inclined mode towards one side of the second protruding portion (24).

6. The punching die set according to claim 2, characterized in that the first punch (11) comprises a sixth vertical face (111) and a fifth inclined face (112) connected in series, the sixth vertical face (111) extending from the first extension (12), the fifth inclined face (112) extending obliquely downwards to a side facing away from the first extension (12);

the second punch (21) comprises a seventh vertical surface (211) and a sixth inclined surface (212) which are connected in sequence, the seventh vertical surface (211) extends out of the second protruding portion (24), and the sixth inclined surface (212) extends downwards in an inclined mode towards one side of the second extending portion (22).

7. The punching die set according to claim 6, characterized in that the first punch (11) further comprises an eighth vertical surface (113), a seventh inclined surface (114) and a first curved surface (115) which are connected in sequence, the eighth vertical surface (113) is connected with the fifth inclined surface (112), the seventh inclined surface (114) extends obliquely downwards to a side facing away from the first extending portion (12), and the first curved surface (115) is located on a side of the first punch (11) facing away from the second punch (21);

the second punch (21) further comprises a second curved surface (213), the second curved surface (213) is connected with the sixth inclined surface (212), and the second curved surface (213) is located on one side, back to the first punch (11), of the second punch (21).

8. The stamping die set according to claim 4, wherein the first boss (14) further comprises an eighth chamfer (146) and a ninth upright surface (147) connected, the eighth chamfer (146) being connected with the second upright surface (143), the eighth chamfer (146) extending obliquely downward to a side facing away from the first extension (12);

the second protruding portion (24) further comprises a tenth vertical surface (243) and a ninth inclined surface (244), the tenth vertical surface (243) is connected with the second inclined surface (242), and the ninth inclined surface (244) extends upwards in an inclined mode towards one side, back to the second extending portion (22).

9. The stamping die set according to claim 5, wherein the first boss (14) further comprises an eleventh vertical face (148) and a tenth ramp (149) connected, the eleventh vertical face (148) being connected with the third ramp (145), the tenth ramp (149) extending obliquely upward to a side toward the first extension (12);

the second extending part (22) further comprises a twelfth vertical surface (223) and an eleventh inclined surface (224), wherein the twelfth vertical surface (223) is connected with the fourth inclined surface (222), and the eleventh inclined surface (224) extends upwards in an inclined mode towards one side of the second protruding part (24).

10. The stamping die set according to claim 5, wherein the first protruding portion (14) further comprises a thirteenth vertical surface (1410), a twelfth inclined surface (1411), a fourteenth vertical surface (1412) and a thirteenth inclined surface (1413) which are connected in sequence, the thirteenth vertical surface (1410) is arranged at a side of the first protruding portion (14) facing away from the first extending portion (12) and is connected with a top surface of the first protruding portion (14), and the twelfth inclined surface (1411) and the thirteenth inclined surface (1413) extend obliquely downwards at a side facing away from the first extending portion (12);

the second extending portion (22) further comprises a fifteenth vertical surface (225) and a fourteenth inclined surface (226), the fifteenth vertical surface (225) is arranged on one side, facing the second protruding portion (24), of the second extending portion (22) and is connected with the top surface of the second extending portion (22), and the fourteenth inclined surface (226) extends obliquely downwards to one side, facing away from the second protruding portion (24).

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