CN221336239U - Hot punching compound die - Google Patents

Abstract

The application discloses a hot stamping compound die, which comprises a first die and a second die which can move relatively; the first die is provided with a clamping part for clamping a workpiece to be machined; the second die comprises a mounting base and a movable die, wherein the mounting base is provided with a punching part for carrying out hot punching on a workpiece to be processed and a trimming part for carrying out hot punching on the edge of the workpiece to be processed, part of the movable die is clamped between the mounting base and the trimming part, and part of the movable die faces the workpiece to be processed clamped in the clamping part; a telescopic elastic seat is arranged between the movable die and the mounting base and used for pushing the movable die to slide between the mounting base and the trimming part. The hot punching compound die can be used for processing special-shaped parts such as a crank and the like, can be combined with the waste heat of a forging blank of the crank to finish various working procedures such as hot punching, hot trimming, plastic correction and the like at one time, improves the processing efficiency and ensures the processing precision.

Description

Hot punching compound die

Technical Field

The application relates to the technical field of machining, in particular to a hot stamping compound die.

Background

Conventional processing of crank blanks often includes forging the blank, cutting off flash and punching out a profiled hole, some or all of these procedures; wherein, cold punching technology is mostly adopted for punching the special-shaped holes.

At present, a punch is generally adopted to punch a special-shaped hole on a crank blank, so as to avoid part deformation, a cold punching principle is adopted to punch the special-shaped hole on the crank blank, and when the cold punching principle is adopted to punch the special-shaped hole on the crank blank, noise is large, a punch is easy to damage, a longer time is reserved for cooling the crank blank, the rolling-out time of a single part is difficult to compress in batch operation, and the improvement of the operation efficiency is not facilitated.

In view of the foregoing, how to improve the punching process of the crank blank is a problem to be solved by those skilled in the art.

Disclosure of utility model

The application aims to provide a hot punching compound die which can utilize forging waste heat of a crank blank waiting for a workpiece to finish a plurality of working procedures of hot punching, hot trimming and plasticity correction at one time, thereby improving the working efficiency and guaranteeing the working quality.

In order to achieve the above object, the present application provides a thermal punching compound die, comprising a first die and a second die which can move relatively; the first die is provided with a clamping part for clamping a workpiece to be machined; the second die comprises a mounting base and a movable die, wherein the mounting base is provided with a punching part for carrying out hot punching on a workpiece to be processed and a trimming part for carrying out hot punching on the edge of the workpiece to be processed, part of the movable die is clamped between the mounting base and the trimming part, and part of the movable die faces the workpiece to be processed clamped in the clamping part; a telescopic elastic seat is arranged between the movable die and the mounting base and used for pushing the movable die to slide between the mounting base and the trimming part.

In some embodiments, the distance between the head of the punching part and the clamping part is smaller than the distance between the head of the trimming part and the clamping part, and the distance between the tail of the punching part and the clamping part is not smaller than the distance between the tail of the trimming part and the clamping part.

In some embodiments, the difference between the spacing of the head portions of both the punching portion and the trimming portion and the chucking portion is not less than the depth to be punched of the workpiece to be punched.

In some embodiments, the first mold comprises a main seat and an edge seat; the clamping part is arranged on the main seat and used for supporting a workpiece main body of a workpiece to be machined, and the side seat is arranged on the periphery of the main seat and used for supporting a edge to be cut of the workpiece to be machined; a hole for the punching part to penetrate is formed in the main seat, and the depth of the hole is not smaller than the maximum insertion depth of the punching part relative to the workpiece to be processed; the cutting edge of the trimming part is aligned with the abutting edges of the main seat and the side seat; the side seat is connected with the main seat in a sliding way, and the sliding direction is parallel to the relative movement direction of the first die and the second die.

In some embodiments, an elastic reset piece is arranged on one side of the side seat away from the second die; the telescopic direction of the elastic resetting piece is parallel to the sliding direction of the side seat.

In some embodiments, the side seat includes a stripper plate and a plurality of first guide posts; the stripper plate is annular and sleeved with a main seat; all the first guide posts are distributed along the circumferential direction of the stripper plate, and any guide post extends along the relative movement direction of the first die and the second die and penetrates through the stripper plate.

In some embodiments, the clamping portion includes a central positioning hole in the main seat for the workpiece to be inserted and positioned.

In some embodiments, a plurality of second guide posts are disposed between the first mold and the second mold; all the second guide posts extend along the relative movement direction of the first die and the second die, one end of any second guide post is fixed on the first die, and the other end of any second guide post is slidably mounted on the second die.

In some embodiments, an edge of the mounting base is slidably mounted to the second guide post; the root of the punching part is fixed in the middle of the mounting base, and the root of the trimming part is fixed at the edge of the mounting base; the movable die is internally provided with a through hole for the punching part to slide.

In some embodiments, the elastic seat comprises a rigid core and a spring sleeved on the rigid core; one end of the rigid core is slidably inserted into the mounting base, and the other end of the rigid core is provided with a rigid push block; the two ends of the spring are respectively abutted against the mounting base and the rigid pushing block.

Compared with the background art, the hot stamping compound die provided by the application comprises a first die and a second die which can move relatively; the first die is provided with a clamping part for clamping a workpiece to be machined; the second die comprises a mounting base and a movable die, wherein the mounting base is provided with a punching part for hot punching a workpiece to be processed and a trimming part for hot punching the edge of the workpiece to be processed, a part of the movable die is clamped between the mounting base and the trimming part, and a part of the movable die faces towards the workpiece to be processed clamped in the clamping part; a telescopic elastic seat is arranged between the movable die and the mounting base and used for pushing the movable die to slide between the mounting base and the trimming part.

The hot stamping compound die provided by the application utilizes the first die and the second die to carry out hot stamping processing on a workpiece to be processed, and can be used for processing special-shaped parts such as a crank and the like. When the hot punching compound die provided by the application is used for carrying out hot punching processing on a workpiece waiting for a crank, the workpiece waiting for processing is clamped on the first die, the punching part and the trimming part arranged on the second die are used for respectively punching and trimming the workpiece waiting for processing, in addition, the movable die can carry out plastic correction on the workpiece waiting for processing together with the punching part and the trimming part, so that the hot punching effect of the workpiece waiting for processing is ensured.

Therefore, the hot punching compound die provided by the application can utilize the forging waste heat of a workpiece waiting for a crank blank to finish various working procedures of hot punching, hot trimming and plastic correction at one time, improves the working efficiency and ensures the working quality.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is an assembly schematic diagram of a hot stamping compound die and a workpiece to be machined according to an embodiment of the present application;

FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along the direction B-B of FIG. 1;

FIG. 4 is a schematic view of a thermal punching compound die in an initial state according to an embodiment of the present application;

FIG. 5 is a schematic view of a thermal punching compound die in a pre-compressed state according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a thermal punching compound die in a punching state according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a thermal punching compound die in a trimming state according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a thermal punching compound die in a corrected state according to an embodiment of the present application;

Fig. 9 is a schematic structural view of a thermal punching compound die in a return unloading state according to an embodiment of the present application.

The device comprises a 01-to-be-machined piece, a 1-first die, a 11-main seat, a 12-side seat, a 121-stripper plate, a 122-first guide column, a 2-second die, a 21-mounting base, a 22-movable die, a 3-punching part, a 4-trimming part, a 5-elastic seat, a 51-rigid core, a 511-rigid push block, a 52-spring, a 6-hole, a 7-elastic reset piece, an 8-center positioning hole and a 9-second guide column.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The present application will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present application.

Referring to fig. 1 to 9, fig. 1 is an assembly schematic diagram of a hot stamping compound die and a workpiece to be machined according to an embodiment of the present application; FIG. 2 is a cross-sectional view taken along the line A-A of FIG. 1; FIG. 3 is a cross-sectional view taken along the direction B-B of FIG. 1; FIG. 4 is a schematic view of a thermal punching compound die in an initial state according to an embodiment of the present application; FIG. 5 is a schematic view of a thermal punching compound die in a pre-compressed state according to an embodiment of the present application; fig. 6 is a schematic structural diagram of a thermal punching compound die in a punching state according to an embodiment of the present application; fig. 7 is a schematic structural diagram of a thermal punching compound die in a trimming state according to an embodiment of the present application; FIG. 8 is a schematic diagram of a thermal punching compound die in a corrected state according to an embodiment of the present application; fig. 9 is a schematic structural view of a thermal punching compound die in a return unloading state according to an embodiment of the present application.

Referring to fig. 1, the present application provides a thermal punching compound die, which comprises a first die 1 and a second die 2; the first die 1 and the second die 2 can relatively move to realize mutual approaching and mutual separating; the first die 1 has a clamping part for clamping a workpiece 01 to be machined; the second die 2 includes a mounting base 21, a movable die 22, and a stretchable elastic seat 5, wherein the mounting base 21 is provided with a punching portion 3 and a trimming portion 4, the punching portion 3 is used for performing thermal punching on a workpiece 01 to be processed which is clamped in the first die 1, the trimming portion 4 is used for performing thermal trimming on the workpiece 01 to be processed which is clamped in the first die 1, a part of the movable die 22 is clamped between the mounting base 21 and the trimming portion 4, a part of the movable die 22 faces the workpiece 01 to be processed which is clamped in the clamping portion, the elastic seat 5 is arranged between the movable die 22 and the mounting base 21, and is used for pushing the movable die 22 to slide between the mounting base 21 and the trimming portion 4, and when the first die 1 and the second die 2 are close to a certain extent, the end faces of the movable die 22 are attached to and pressed against the surface of the workpiece 01 to be processed which is clamped in the first die 1.

In this embodiment, the movable die 22 is floatingly mounted between the mounting base 21 and the trimming portion 4, for example, the circumferential edge of the movable die 22 is caught between the mounting base 21 and the trimming portion 4, the movement range of the movable die 22 can be restricted, the end face of the movable die 22 faces the workpiece 01 caught in the catching portion for pressing the workpiece 01, and the plasticity and correction are achieved for the foregoing.

The hot stamping compound die provided by the embodiment performs hot stamping processing on the workpiece 01 to be processed by using the first die 1 and the second die 2, and performs punching and trimming on the workpiece 01 to be processed at one time by using the punching part 3 and the trimming part 4 arranged on the second die 2, so that the operation is simplified, and the operation efficiency is improved. The first die 1 and the second die 2 can process corresponding die contours according to the blank shape of the to-be-machined piece 01, and positioning is guaranteed.

When the hot punching compound die is used, a to-be-machined piece 01 is clamped on the first die 1, and the punching part 3 and the trimming part 4 arranged on the second die 2 are used for respectively punching and trimming the to-be-machined piece 01; the punching part 3 and the trimming part 4 both adopt a hot stamping technology to process the workpiece 01 to be processed, and for this purpose, the embodiment also adopts the movable die 22 to attach and compress the workpiece 01 to be processed when the first die 1 and the second die 2 extrude the workpiece 01 to be processed, and the workpiece 01 to be processed together with the punching part 3 and the trimming part 4 is plastic, so that the hot stamping effect of the workpiece 01 to be processed is ensured.

In summary, the hot stamping compound die provided by the application can be used for processing special-shaped parts such as a crank and the like, fully utilizes the characteristics of the compound die to finish various hot stamping processing procedures of a crank waiting for a workpiece 01 at one time, combines the waste heat of a forging blank of the crank to correct a product after hot stamping, and improves the product precision.

The thermal punching compound die provided by the application is further described below with reference to the accompanying drawings and embodiments.

In general, as shown in fig. 1, the punching portion 3 and the trimming portion 4 each include a head portion and a tail portion which are relatively distributed; wherein, the head of the punching part 3 faces to the workpiece 01 to be processed, and is used for punching the workpiece 01 to be processed, and the head of the trimming part 4 faces to the workpiece 01 to be processed, and is used for trimming the workpiece 01 to be processed. When the punching part 3 punches a hole on the workpiece 01 to be processed, the head of the punching part 3 firstly contacts and cuts the workpiece 01 to be processed, then the punching part 3 continuously stretches into the workpiece 01 to be processed, and the tail of the punching part 3 continuously approaches to the workpiece 01 to be processed. Also, when the punching portion 3 trims the workpiece 01, the head portion of the trimming portion 4 first contacts and cuts the workpiece 01, and then the trimming portion 4 continuously extends into the workpiece 01, and the tail portion of the trimming portion 4 continuously approaches the workpiece 01.

In some embodiments, the distance between the head of the punching portion 3 and the clamping portion is smaller than the distance between the head of the trimming portion 4 and the clamping portion, which means that when the first die 1 and the second die 2 are close to each other, the head of the punching portion 3 will first contact the workpiece 01 to be processed disposed in the clamping portion and punch the workpiece 01, whereas the time when the head of the trimming portion 4 contacts the workpiece 01 is later than the time when the head of the punching portion 3 contacts the workpiece 01 to be processed, simply, the hot-punching compound die punches and then trims. In addition, in the thermal punching compound die provided by the application, the distance between the tail of the punching part 3 and the clamping part is not smaller than the distance between the tail of the trimming part 4 and the clamping part, which means that when the punching part 3 and the trimming part 4 work, the time for the punching part 3 to separate from the workpiece 01 is equal to or later than the time for the trimming part 4 to separate from the workpiece 01, in short, the punching part 3 is always positioned in the workpiece 01 during the whole process of trimming the workpiece 01 by the trimming part 4.

It can be seen that in the above embodiment, when the hot punching compound die punches and then trims, and the trimming portion 4 trims, the punching portion 3 is always located in the workpiece 01 to be processed, so that the processing precision of the hole can be ensured, and the trimming effect of the trimming portion 4 can be improved.

On the basis of the above embodiment, the difference between the head of the punching portion 3 and the trimming portion 4 and the clearance of the clamping portion is not smaller than the depth to be punched of the workpiece 01, which means that the punching portion 3 finishes punching the workpiece 01, and the trimming portion 4 starts trimming the workpiece 01, in other words, the two processes of punching and trimming the workpiece 01 are independently performed, so that the punching portion 3 and the trimming portion 4 are prevented from applying the acting force to the workpiece 01 at the same time to affect each other.

Referring to fig. 1, in some embodiments, the first mold 1 may include a main seat 11 and an edge seat 12; the clamping part is arranged on the main seat 11, the clamping part and the main seat 11 can jointly support a workpiece main body of the workpiece 01 to be processed, for example, the part of the structure body which is not needed to be trimmed and removed in the workpiece 01 to be processed is supported, the side seat 12 is arranged on the periphery of the main seat 11 and is used for supporting the edge to be trimmed of the workpiece 01 to be processed, and obviously, the edge to be trimmed of the workpiece 01 to be processed refers to the part of the structure body which is needed to be trimmed and removed in the workpiece 01 to be processed.

From the viewpoint of the punching operation, in the above embodiment, the hole 6 into which the punching portion 3 penetrates is provided in the main seat 11, and the depth of the hole 6 is not smaller than the maximum insertion depth of the punching portion 3 with respect to the workpiece 01 to be processed, that is, when the punching portion 3 completes the punching operation of the workpiece 01 to be processed, the punching portion 3 can move in the hole 6 of the main seat 11, the relative movement of both the first die 1 and the second die 2 is ensured, and the head of the punching portion 3 is prevented from being accidentally bumped.

From the point of view of the trimming operation, in the above embodiment, the side seat 12 is slidably attached to the main seat 11, and the sliding direction is parallel to the relative movement direction of both the first die 1 and the second die 2, while the blade edge of the trimming portion 4 is aligned with the abutting edges of both the main seat 11 and the side seat 12. It can be seen that when the trimming portion 4 trims the workpiece 01, the trimming portion 4 first contacts the workpiece 01 to effect cutting of the edge of the workpiece 01 along the adjoining edges of both the main seat 11 and the side seat 12, and then the trimming portion 4 pushes the side seat 12 to slide relative to the main seat 11 by applying pressure to the side seat 12 by the edge of the workpiece 01 that has been cut off. After the trimming operation is completed, the trimming portion 4 can push the trimming seat 12 to slide relative to the main seat 11, which not only can protect the trimming portion 4 and the first mold 1, but also can enable the first mold 1 and the second mold 2 to continuously approach each other, so as to prepare for the plastic process of the hot stamping compound mold.

On the basis of the above embodiment, the first mold 1 further includes an elastic restoring member 7, the elastic restoring member 7 is disposed on a side of the side seat 12 away from the second mold 2, and the expansion and contraction direction of the elastic restoring member 7 is parallel to the sliding direction of the side seat 12. Referring to fig. 1, the lower end surface of the side seat 12 is far away from the second mold 2, one end of the elastic restoring member 7 along the extending direction thereof abuts against the lower end surface of the side seat 12, and the other end of the elastic restoring member 7 along the extending direction thereof abuts against the bottom end of the first mold 1. The elastic restoring member 7 can be continuously compressed when the trimming part 4 pushes the trimming seat 12 to slide relative to the main seat 11, so that after the trimming part 4 moves reversely and is separated from the trimming seat 12, the elastic restoring member 7 releases elastic potential energy thereof, and the trimming seat 12 and the trimming edge arranged on the trimming seat 12 can be pushed to move towards the second die 2, thereby realizing discharging. The flash refers to an edge structure of the workpiece 01 cut from the workpiece 01.

In general, as shown in fig. 1 and 2, the side seat 12 may include a stripper plate 121 and a plurality of first guide posts 122; the stripper plate 121 is annular, and the stripper plate 121 is sleeved with the main seat 11; all the first guide posts 122 are distributed along the circumferential direction of the stripper plate 121, any one guide post extends along the relative movement direction of the first die 1 and the second die 2 and penetrates through the stripper plate 121, and the stripper plate 121 can be guided to slide along the relative movement direction of the first die 1 and the second die 2; the elastic restoring member 7 is provided between the stripper plate 121 and the bottom end of the first mold 1.

In the embodiments provided by the application, the workpiece 01 to be machined needs to be punched and cut, and the clamping part of the first die 1 cannot clamp and position the workpiece 01 to be machined through the edge of the workpiece 01 to be machined, so as to ensure that the clamping part comprises a central positioning hole 8 arranged in a main seat 11, and the central positioning hole 8 can be used for inserting and positioning the workpiece 01 to be machined, thereby meeting the installation and positioning requirements of the workpiece 01 to be machined in the clamping part, as shown in fig. 1.

In some embodiments, a plurality of second guide posts 9 are arranged between the first die 1 and the second die 2 and used for guiding the relative movement of the first die 1 and the second die 2, so as to ensure the die clamping precision of the first die 1 and the second die 2. Wherein all the second guide posts 9 extend in the direction of the relative movement of both the first mold 1 and the second mold 2, for example, both the first mold 1 and the second mold 2 move relatively in the up-down direction, all the second guide posts 9 extend in the up-down direction; one end of any one second guide post 9 is fixed in first mould 1, and the other end slidable mounting of any one second guide post 9 is in second mould 2, and it can be seen that first mould 1 and dress card wait to work piece 01 in first mould 1 are motionless, and second mould 2 can drive punching part 3, side cut portion 4 motion, make punching part 3, side cut portion 4 be close to wait to work piece 01 and keep away from wait to work piece 01.

Referring to fig. 1 and 3, in the above-described embodiment, the second mold 2 includes a mounting base 21 and a movable mold 22; wherein, the edge of the mounting base 21 is slidably mounted on the second guide post 9, the root of the punching portion 3 and the root of the trimming portion 4 are both fixed on the mounting base 21, for example, the root of the punching portion 3 is fixed in the middle of the mounting base 21, and the root of the trimming portion 4 is fixed on the edge of the mounting base 21; the movable die 22 is clamped between the mounting base 21 and the trimming part 4, can float between the mounting base 21 and the trimming part 4 along the relative movement direction of the first die 1 and the second die 2, and is internally provided with a through hole for the punching part 3 to slide, so that the punching operation and the plastic operation are not affected.

The hot stamping compound die provided by the application comprises an elastic seat 5 arranged between a movable die 22 and a mounting base 21. In some embodiments, the elastic seat 5 may include a rigid core 51 and a spring 52 sleeved on the rigid core 51; wherein, one end of the rigid core 51 is slidably inserted into the mounting base 21, and the other end of the rigid core 51 is provided with a rigid push block 511; the two ends of the spring 52 are respectively abutted against the mounting base 21 and the rigid pushing block 511, when the movable die 22 is abutted against the workpiece 01 to be processed clamped in the first die 1 and is continuously close to the workpiece 01, the spring 52 is compressed, and meanwhile, the spring 52 continuously extrudes the workpiece 01 to be processed through the movable die 22, and the workpiece 01 to be processed is plastic by the movable die 22.

In summary, the hot punching compound die provided by the application can process a workpiece 01 to be processed according to the operation flow shown in fig. 4 to 9, and can realize multiple procedures of hot punching, hot trimming and plasticity.

In operation, as shown in fig. 4, first, a to-be-machined member 01 such as a crank forging blank is loaded into the hot stamping compound die, specifically, the crank forging blank is loaded and clamped at the clamping part of the first die 1 when the first die 1 and the second die 2 of the hot stamping compound die are separated from each other; subsequently, as shown in fig. 5, the first die 1 and the second die 2 are relatively moved in a direction approaching each other, for example, the second die 2 located above the first die is lowered, and when the movable die 22 of the second die 2 contacts the upper surface of the crank forging blank, the movable die 22 gradually presses the crank forging blank, ready for the hot stamping operation of the punching portion 3 and the trimming portion 4; then, the second die 2 continues to descend, and as shown in fig. 6, the punching portion 3 provided to the second die 2 starts to contact the crank forging blank and punch the crank forging blank; subsequently, the second die 2 continues to descend, as shown in fig. 7, at this time, the punching portion 3 provided to the second die 2 has completed punching, and the trimming portion 4 provided to the second die 2 starts to contact and trim the crank forging blank, and during this process, the elastic restoring member 7 located below the side seat 12 of the first die 1 continues to compress, and likewise, the elastic seat 5 provided between the mounting base 21 and the movable die 22 also continues to compress; further, as shown in fig. 8, the second die 2 is moved to the bottom dead center, the elastic seat 5 is brought into contact with the mounting base 21 and is sufficiently pressed, and at this time, the hot stamping compound die forms a rigid whole, and the crank forging blank sandwiched in the rigid whole can be subjected to shaping correction, thereby improving the precision of the part by the thermal correction; finally, as shown in fig. 9, the second mold 2 is moved upward, so that the first mold 1 and the second mold 2 are separated relatively, the elastic force of the elastic reset piece 7 is released to enable the stripper plate 121 of the side seat 12 to move upward, the cut flash is ejected out, and the unloading is completed, at this time, the machined crank forging blank can be removed, the whole hot stamping compound die is restored to an initial state, and the hot stamping processing of the next crank forging blank can be performed. In short, the hot punching compound die provided by the application can process crank forging blanks according to the process flow of pre-compacting, punching, trimming (also called trimming), correcting and unloading in a returning way.

Compared with the conventional punching process of the crank forging blank, the hot punching compound die provided by the application changes the punching process from cold punching to hot punching, can utilize the waste heat of the workpiece 01 waiting for the crank forging blank to finish the three processes of hot punching, hot trimming and correction in the same die at one time, improves the processing efficiency and the equipment utilization rate, can ensure the processing precision of parts, and also reduces the normalizing cost.

The hot stamping compound die provided by the application is described in detail above. The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present application and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.

Claims (10)

1. A hot stamping compound die, characterized by comprising a first die (1) and a second die (2) which are relatively movable; the first die (1) is provided with a clamping part for clamping a workpiece (01) to be machined; the second die (2) comprises a mounting base (21) and a movable die (22), wherein the mounting base (21) is provided with a punching part (3) for hot punching a workpiece (01) to be processed and a trimming part (4) for hot punching the edge of the workpiece (01) to be processed, part of the movable die (22) is clamped between the mounting base (21) and the trimming part (4), and part of the movable die (22) faces the workpiece (01) to be processed clamped in the clamping part; a telescopic elastic seat (5) is arranged between the movable die (22) and the mounting base (21) and used for pushing the movable die (22) to slide between the mounting base (21) and the trimming part (4).

2. The thermal punching compound die according to claim 1, characterized in that a distance between a head of the punching part (3) and the clamping part is smaller than a distance between a head of the trimming part (4) and the clamping part, and a distance between a tail of the punching part (3) and the clamping part is not smaller than a distance between a tail of the trimming part (4) and the clamping part.

3. The hot stamping compound die according to claim 2, characterized in that the difference between the spacing of the head of both the punching section (3) and the trimming section (4) and the clamping section is not smaller than the depth to be punched of the workpiece (01) to be punched.

4. The hot stamping compound die of claim 1, wherein the first die (1) comprises a main seat (11) and an edge seat (12); the clamping part is arranged on the main seat (11) and used for supporting a workpiece main body of a workpiece (01), and the side seat (12) is arranged on the periphery of the main seat (11) and used for supporting a to-be-cut edge of the workpiece (01); a hole (6) for the punching part (3) to penetrate is formed in the main seat (11), and the depth of the hole (6) is not smaller than the maximum insertion depth of the punching part (3) relative to the workpiece (01) to be processed; the cutting edge of the trimming part (4) is aligned with the abutting edges of the main seat (11) and the side seat (12); the side seat (12) is connected to the main seat (11) in a sliding manner, and the sliding direction is parallel to the relative movement direction of the first die (1) and the second die (2).

5. The hot stamping compound die according to claim 4, characterized in that the side of the side seat (12) remote from the second die (2) is provided with an elastic return element (7); the telescopic direction of the elastic resetting piece (7) is parallel to the sliding direction of the side seat (12).

6. The hot stamping compound die of claim 5, wherein the rim (12) comprises a stripper plate (121) and a plurality of first guide posts (122); the stripper plate (121) is annular and sleeved with the main seat (11); all the first guide posts (122) are circumferentially distributed along the stripper plate (121), and any guide post (122) extends along the relative movement direction of the first die (1) and the second die (2) and penetrates through the stripper plate (121).

7. The hot stamping compound die according to claim 4, characterized in that the clamping portion comprises a central positioning hole (8) provided in the main seat (11) for the insertion positioning of a workpiece (01) to be machined.

8. The hot stamping compound die according to any one of claims 1 to 7, characterized in that a plurality of second guiding studs (9) are provided between the first die (1) and the second die (2); all the second guide posts (9) extend along the relative movement direction of the first die (1) and the second die (2), one end of any one of the second guide posts (9) is fixed on the first die (1) and the other end is slidably mounted on the second die (2).

9. The hot stamping compound die of claim 8, characterized in that the edge of the mounting base (21) is slidingly mounted to the second guide post (9); the root of the punching part (3) is fixed in the middle of the mounting base (21), and the root of the trimming part (4) is fixed at the edge of the mounting base (21); the movable die (22) is internally provided with a through hole for the punching part (3) to slide.

10. The hot stamping compound die according to claim 9, characterized in that the elastic seat (5) comprises a rigid core (51) and a spring (52) sheathed on the rigid core (51); one end of the rigid core (51) is slidably inserted into the mounting base (21), and the other end of the rigid core (51) is provided with a rigid push block (511); both ends of the spring (52) are respectively abutted against the mounting base (21) and the rigid push block (511).