A sheet metal material stamping equipment

Abstract

The present invention is a stamping equipment for thin sheet metal materials, in particular, a stamping equipment for lead frames and pins. The present invention includes a base; a frame including a left side plate, a right side plate and a top plate is fixed on the base, and the top plate connects the left side plate and the right side plate at their upper parts; an upper die seat and a lower die seat are arranged between the top plate and the base, a lifting plate is arranged below the top plate, a first hydraulic cylinder is installed above the top plate, the piston rod of the first hydraulic cylinder is connected to the lifting plate, and the upper die seat is installed on two vertical plates fixedly connected to the lifting plate below the lifting plate through a first rotating shaft, and the first rotating shaft is connected to a first motor. In the present invention, upper and lower die seats in the shape of a polygonal column are provided, and multiple sets of upper and lower dies of different models can be installed. During the working process, the corresponding upper and lower dies can be selected according to the model of the semiconductor chip, thereby avoiding the phenomenon of frequent disassembly of the mold and saving preparation time; by adding a driving motor to the upper and lower die seats, rapid switching of the upper and lower dies can be achieved.

Description

Technical Field

[0001] The invention relates to a sheet metal material stamping device, in particular to a lead frame and a pin stamping device. Background Art

[0002] The molds used in metal stamping processing will be damaged to varying degrees after use, so they will be replaced after a period of time. Some products use different molds in different processes during processing, so they also need to be easily replaced. For example: the lead frame of an integrated circuit is formed by stamping a thin copper sheet, and there is also a subsequent pin stamping process, which requires the use of different molds. Most of the existing pin stamping equipment is designed for semiconductor chips of a specific size, and only one mold is used in the equipment. Although this design ensures the accuracy of pin stamping, its limitations are gradually highlighted in the face of the market trend of diversification and rapid iteration of semiconductor chips. Whenever the model of the semiconductor chip changes, the corresponding mold needs to be replaced. When replacing the mold, professional technicians are required to replace it. The replacement process is time-consuming and labor-intensive, and the degree of automation is low, which increases the production preparation time and cost, and restricts the flexibility and production speed of the production line. In addition, the shape of the lead frame of different models of integrated circuits is different, and different molds are also required. For lead frame manufacturers, the stamping mold should be replaced according to the product situation. Summary of the invention

[0003] The purpose of the present invention is to design a sheet metal material stamping device capable of quickly replacing different dies.

[0004] The present invention comprises a base; a frame comprising a left side plate, a right side plate and a top plate is fixed on the base, and the top plate connects the left side plate and the right side plate at their upper parts; an upper die seat and a lower die seat are arranged between the top plate and the base, a lifting plate is arranged below the top plate, a first hydraulic cylinder is arranged above the top plate, a piston rod of the first hydraulic cylinder is connected to the lifting plate, two vertical plates fixedly connected to the lifting plate are arranged below the lifting plate, an upper die seat is arranged between the two vertical plates via a first rotating shaft, and the first rotating shaft is connected to a first motor arranged on the lifting plate;

[0005] The upper die seat is a transversely arranged multi-prism, at least a part of its surface is provided with an upper die installation groove, an upper die group including at least one upper die is arranged in the upper die installation groove, and the upper die group is fixed in the upper die installation groove by bolts; an upper die seat positioning mechanism is arranged between the upper die seat and the lifting plate;

[0006] The lower die base is installed on the left plate and the right plate through a second rotating shaft, and the second rotating shaft is connected to the second motor; the lower die base is a transversely arranged multi-prism, at least a part of its surface is provided with a lower die installation groove, a lower die assembly including at least one lower die is arranged in the lower die installation groove, and the lower die assembly is fixed in the lower die installation groove by bolts;

[0007] A second hydraulic cylinder is arranged on the base, and a piston rod of the second hydraulic cylinder is upwardly connected to a lower die seat support plate; and the lower die seat support plate can cooperate with the bottom surface of the lower die seat.

[0008] Preferably, the upper mold base positioning mechanism includes a first positioning sensor arranged on a vertical plate of the lifting plate, and a first trigger member group is arranged on the side of the upper mold base adjacent to the vertical plate. Each first trigger member in the first trigger member group corresponds to a surface of the upper mold base, and when it cooperates with the first positioning sensor, the surface of the upper mold base faces downward and is in a position perpendicular to the piston rod of the first hydraulic cylinder.

[0009] Furthermore, the first trigger member is T-shaped, with a top surface fixedly connected to the upper mold base and a vertical surface perpendicular to the vertical plate of the lifting plate.

[0010] Preferably, a second positioning sensor is provided on the left side plate, and a second triggering member group for positioning the lower die seat is provided on the side of the lower die seat adjacent to the second positioning sensor; each second triggering member in the second triggering member group corresponds to a surface of the lower die seat, and when it cooperates with the second positioning sensor, the surface of the lower die seat faces upward and is in a position perpendicular to the piston rod of the first hydraulic cylinder. In the present invention, the first motor and the second motor can be stepper motors, and the rotation angle of the stepper motor can be adjusted according to the number of facets of the upper and lower die seats, and the switching of the upper and lower dies can also be realized, but the stepper motor will have a deviation in the rotation angle, resulting in the upper and lower dies being switched not being in a horizontal state; and the design using the positioning sensor can better ensure the accuracy of the switching of the upper and lower dies.

[0011] Furthermore, the second triggering member is T-shaped, with a top surface fixedly connected to the lower mold base and a vertical surface perpendicular to the left side plate.

[0012] Furthermore, a first auxiliary positioning sensor corresponding to the position of the first triggering member is arranged on the vertical plate in the front direction of the first positioning sensor; or a second auxiliary positioning sensor corresponding to the position of the second triggering member is arranged on the side plate in the front direction of the second positioning sensor. The design of adding auxiliary positioning sensors can decelerate the upper and lower mold bases in advance when positioning the upper and lower molds, thereby improving the accuracy of positioning.

[0013] Furthermore, the upper die base or the lower die base is a regular polygonal prism. The regular polygonal prism design adopted in the present invention can make the interval angles of adjacent dies the same when they are rotated and switched, which is convenient for the control of the processing and operation process.

[0014] Furthermore, the upper die base or the lower die base has an even number of surfaces, and the upper surface of the lower die base support plate is a plane.

[0015] Further, a gripping space is provided between the upper die and the upper die mounting groove on the upper die base; or a gripping space is provided between the lower die and the lower die mounting groove on the lower die base.

[0016] The present invention is provided with upper and lower die seats in the shape of a polygon, which can be equipped with multiple sets of upper and lower dies of different models. During the working process, the corresponding upper and lower dies can be selected according to the models of semiconductor chips and lead frames, thereby avoiding the phenomenon of frequent disassembly of the molds and saving preparation time; by adding a drive motor to the upper and lower die seats, the upper and lower molds can be quickly switched, thereby improving the flexibility of the production line. The upper and lower die seats of the present invention adopt a positioning mechanism, and through the design of a sensor induction trigger, the upper and lower molds can be judged by the sensor, and the motor is linked to control to achieve automatic switching of the molds. The design of increasing the gripping space of the present invention is convenient for disassembly and replacement of the embedded molds, and avoids the phenomenon of the mold falling during the disassembly and assembly process. In the present invention, in order to make the rotating lower mold better supported, the present invention further uses a second hydraulic cylinder to support the lower die seat, so the present invention is more suitable for stamping processing of metal plates with smaller thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of an embodiment of the present invention;

[0018] Figure 2 It is a left view of an embodiment of the present invention;

[0019] Figure 3 for Figure 1 Middle AA section view;

[0020] Figure 4 for Figure 1 A partial enlarged view of point B in the middle;

[0021] Figure 5 for Figure 1 The main view of the upper and lower die bases;

[0022] Figure 6 for Figure 5 Left view of;

[0023] Figure 7 for Figure 1 Right view of the left center vertical panel;

[0024] Figure 8 This is a cross-sectional view of the structure of the upper and lower molds in this embodiment;

[0025] Fig. 9 Schematic diagram of the structure of the lower mold in this embodiment;

[0026] Wherein: 1. base, 2. left plate, 3. right plate, 4. top plate, 5. second motor, 6. lower die seat, 7. second rotating shaft, 8. lower die mounting groove, 9. second hydraulic cylinder, 10. lower die seat support plate, 11. first hydraulic cylinder, 12. lifting plate, 13. guide rod, 14. vertical plate, 15. first motor, 16. upper die seat, 17. first rotating shaft, 18. upper die mounting groove, 19. grabbing groove, 20. first positioning sensor, 21. first trigger component group, 22. second positioning sensor, 23. second trigger component group, 24. lower die group, 25. molding groove, 26. upper die group, 27. first auxiliary positioning sensor, 28. second auxiliary positioning sensor. DETAILED DESCRIPTION

[0027] by Figure 1 The up, down, left, right, front and back directions of this embodiment are defined.

[0028] As shown in the figure, this embodiment includes a base 1, a frame is fixedly installed on the top of the base 1, the frame includes a left side plate 2, a right side plate 3 is arranged on the right side of the left side plate 2, and the lower ends of the left side plate 2 and the right side plate 3 are fixedly connected to the upper surface of the base 1. A top plate 4 is arranged above the two side plates, and the upper parts of the left side plate 2 and the right side plate 3 are fixedly connected via the top plate 4.

[0029] A lower die base 6 is arranged between the left side plate 2 and the right side plate 3. In this embodiment, the lower die base 6 adopts a regular quadrangular prism structure and is transversely arranged between the left side plate 2 and the right side plate 3. The four rectangular surfaces of the lower die base 6 are all provided with lower die mounting grooves 8, and a lower die set 24 is arranged in the lower die mounting grooves 8. In this embodiment, the lower die set 24 is provided with four lower dies of different models, which are respectively embedded in each lower die mounting groove 8 by bolts. The left and right sides of the lower die base 6 are fixedly connected with a second rotating shaft 7, and the left and right ends of the second rotating shaft 7 are respectively rotatably connected with the left side plate 2 and the right side plate 3. The lower die base 6 is installed between the left side plate 2 and the right side plate 3 through the second rotating shaft 7. A second motor 5 is arranged on the left end surface of the left side plate 2. The second motor 5 is installed on the left side plate 2 by bolts, and its rotating shaft extends rightward and is fixedly connected with the second rotating shaft 7. When in use, starting the second motor 5 can control the rotation of the lower die base 6. A second hydraulic cylinder 9 is provided below the lower die base 6, and the cylinder body of the second hydraulic cylinder 9 is fixedly mounted on the base 1, and a lower die base support plate 10 is provided above the piston rod thereof. In this embodiment, the lower die base support plate 10 adopts a flat plate structure, and the upper surface is a plane, which matches the surface of the lower die base 6 in the shape of a regular quadrangular prism. After the second hydraulic cylinder 9 is started, the lower die base support plate 10 moves upward to contact the lower die base 6, and supports the lower die base 6.

[0030] In the present invention, when the lower die base 6 adopts a regular polygonal prism with an odd number of surfaces, the lower die base support plate 10 can adopt a V-shape or other shapes corresponding to the lower part of the polygonal prism to support the lower die base 6. When the polygonal prism adopted is not a regular polygonal prism, the design of two or more second hydraulic cylinders 9 can be adopted, and the lower die base support plate 10 is respectively arranged on the piston rod of each second hydraulic cylinder 9 to adapt to the lower surface of the lower die base 6 with different shapes.

[0031] A second positioning sensor 22 is provided at the right end of the left side plate 2; on the right side of the second positioning sensor 22, a second triggering member group 23 is provided on the left end surface of the lower die base 6. In this embodiment, the second triggering member group 23 includes four second triggering members, each of which has a different size and corresponds to a surface of the lower die base 6. A group of grooves is provided on the left end surface of the lower die base 6. In this embodiment, four grooves are provided, each of which is located in the middle position of each surface adjacent to the left end surface, and each second triggering member is respectively embedded in the groove; each second triggering member is T-shaped, and its top surface is close to the second rotating shaft 7, and is fixedly connected to the groove provided in the lower die base 6 by bolts; its vertical surface is close to the outer surface of the lower die base 6, and is perpendicular to the left side plate 2, and is located in the middle position of each corresponding surface of the lower die base 6. When in use, when the second positioning sensor 22 senses the second triggering member, it feedbacks information, and the second motor 5 is stopped by the system control, and the lower die corresponding to the second triggering member is horizontally upward; at this time, the horizontally upward surface of the lower die base 6 is the working surface of the lower die base 6. Since the sizes of the second trigger members are different, the system can determine the lower mold based on the information fed back by the second positioning sensor 22. A second auxiliary positioning sensor 28 is provided in the front direction of the second positioning sensor 22. In this embodiment, the shaft of the second motor 5 rotates counterclockwise. According to the rotation direction of the shaft, the position of the second trigger member that can be sensed before the second positioning sensor 22 is defined as the front direction of the second positioning sensor 22. The second auxiliary positioning sensor 28 and the second positioning sensor 22 are arranged on a circle, corresponding to the position of the second trigger member. During the rotation of the lower mold base 6, the second auxiliary positioning sensor 28 first senses the second trigger member corresponding to the required lower mold. After feedback, the system controls the second motor 5 to decelerate, and then stops the rotation of the lower mold base 6 through the second positioning sensor 22 to ensure the accuracy of the positioning of the lower mold base 6.

[0032] A first hydraulic cylinder 11 is arranged above the top plate 4. The cylinder body of the first hydraulic cylinder 11 is installed on the upper surface of the top plate 4 by bolts. Its piston rod extends downward through the top plate 4 and is parallel to the piston rod of the second hydraulic cylinder 9. A lifting plate 12 is arranged below the top plate 4. The upper surface of the lifting plate 12 is fixedly connected to the lower end of the piston rod of the first hydraulic cylinder 11. When in use, starting the first hydraulic cylinder 11 can control the lifting plate 12 to move up and down. Guide rods 13 are symmetrically arranged on the left and right sides of the piston rod of the first hydraulic cylinder 11. The guide rods 13 are slidably connected to the top plate 4, and the lower ends of the guide rods 13 are fixedly installed on the lifting plate 12. When the lifting plate 12 moves up and down, it plays a role of guiding and limiting. The lower end of the lifting plate 12 is provided with a vertical plate 14. In this embodiment, two vertical plates 14 are provided. The vertical plate 14 is a part of the lifting plate 12, is fixedly connected to the lower surface of the lifting plate 12, and can move up and down with the lifting plate 12. An upper die seat 16 is arranged between the two vertical plates 14. In this embodiment, the upper die seat 16 adopts a regular quadrangular prism structure and is arranged horizontally between the two vertical plates 14. The four rectangular surfaces of the upper die seat 16 are all provided with upper die mounting grooves 18, and an upper die set 26 is arranged in the upper die mounting grooves 18. In this embodiment, the upper die set 26 is provided with four upper dies of different models, which are respectively embedded in each upper die mounting groove 18 by bolts. The left and right sides of the upper die seat 16 are fixedly connected with a first rotating shaft 17, and the left and right ends of the first rotating shaft 17 are respectively rotatably connected with the two vertical plates 14. The upper die seat 16 is installed between the two vertical plates 14 through the first rotating shaft 17. A first motor 15 is arranged on the left end surface of the left vertical plate 14, and its rotating shaft extends rightward and is fixedly connected with the first rotating shaft 17. When in use, starting the first motor 15 can control the rotation of the upper die seat 16.

[0033] An upper mold base positioning mechanism is arranged between the upper mold base 16 and the lifting plate 12, and the upper mold base positioning mechanism includes a first positioning sensor 20, and the first positioning sensor 20 is arranged at the right end of the left vertical plate 14; on the right side of the first positioning sensor 20, a first trigger member group 21 is arranged on the left end face of the upper mold base 16. In this embodiment, the first trigger member group 21 includes four first trigger members, each of which has a different size and corresponds to a surface of the upper mold base 16 respectively. A group of grooves are provided on the left end surface of the upper die seat 16. In this embodiment, four grooves are provided. Each groove is located in the middle of each surface adjacent to the left end surface. Each first triggering member is respectively embedded in the groove; each first triggering member is T-shaped, and its top surface is close to the first rotating shaft 17, and is fixedly connected to the groove provided in the upper die seat 16 by bolts; its vertical surface is close to the outer surface of the upper die seat 16, and is perpendicular to the vertical plate 14, and is located in the middle of each corresponding surface of the upper die seat 16. When in use, when the first positioning sensor 20 senses the first triggering member and feedbacks information, the system controls the first motor 15 to stop, and the upper die corresponding to the first triggering member faces downward and is in a position perpendicular to the first hydraulic cylinder 11; at this time, the horizontal downward surface of the upper die seat 16 is the working surface of the upper die seat 16, and the working surface is parallel to the working surface of the lower die seat 6. Because the sizes of each first triggering member are different, the system can judge the lower die according to the information fed back by the first positioning sensor 20. A first auxiliary positioning sensor 27 is provided in the front direction of the first positioning sensor 20. In this embodiment, the shaft of the first motor 15 rotates counterclockwise. According to the rotation direction of the shaft, the position of the first triggering member that can be sensed before the first positioning sensor 20 is defined as the front direction of the first positioning sensor 20. The first auxiliary positioning sensor 27 and the first positioning sensor 20 are arranged on a circle, corresponding to the position of the first triggering member. During the rotation of the upper mold base 16, the first auxiliary positioning sensor 27 first senses the first triggering member of the required upper mold. After feedback, the system controls the first motor 15 to decelerate, and then stops the rotation of the upper mold base 16 through the first positioning sensor 20 to ensure the accuracy of the positioning of the upper mold base 16. In this embodiment, both the first motor 15 and the second motor 5 use reduction motors to avoid excessive rotation speed of the upper and lower mold bases, which affects the accuracy of positioning.

[0034] In this embodiment, the lower die base 6 and the upper die base 16 are designed in the shape of a regular quadrangular prism, which enables the interval angles of adjacent dies to be the same when they are rotated and switched, thereby facilitating the control of the processing and operation process.

[0035] In this embodiment, the lower die base 6 and the upper die base 16 can adopt different shapes of structures, such as the upper die base 16 adopts a triangular prism, and the lower die base 6 adopts a hexagonal prism, and the corresponding three sets of upper and lower dies are sequentially or intermittently installed in the upper and lower die bases, and the corresponding molds can be switched through the recognition of the positioning sensor. Alternatively, three sets of corresponding upper and lower dies are installed in the upper and lower die bases of regular quadrangular prisms. This method of use can avoid replacing the upper and lower die bases and the lower die base support plate 10, saving preparation time, and the upper and lower dies can be flexibly installed according to the needs of the production line when in use.

[0036] In this embodiment, the first and second motors can be stepper motors, and the positioning of the upper and lower mold bases can be achieved through stepper motors. When the upper and lower mold bases are in the shape of a regular quadrangular prism, after adjusting the rotation angle of the stepper motor to 90 degrees, the upper and lower molds can be switched and the positions of the upper and lower molds can be positioned by controlling the stepper motor. When upper and lower mold bases of other shapes are used, the rotation angle of the stepper motor needs to be adaptively adjusted. However, the stepper motor has a phenomenon of rotation angle deviation during use. When the upper and lower mold bases are rotated, if the corresponding upper and lower molds are not in a horizontal state, the upper and lower molds and the stamped parts will be damaged during the stamping process. Therefore, the positioning mechanism using the positioning sensor in this embodiment can ensure the accuracy when switching the upper and lower molds.

[0037] In this embodiment, each lower mold in the lower mold assembly 24 is an H-shaped structure. After the lower mold is installed in the lower mold installation groove 8, a gripping space is formed between the groove on the outer surface of the lower mold and the lower mold installation groove 8, which is convenient for maintenance personnel to grip the embedded lower mold and can prevent the lower mold from falling during installation and removal. A gripping groove 19 is provided on the inner wall of each upper mold installation groove 18. After the upper mold is installed, a gripping space is formed between the outer surface of the upper mold and the gripping groove 19, which is convenient for maintenance personnel to grip the embedded upper mold and can prevent the upper mold from falling during installation and removal. A molding groove 25 is provided on the upper surface of each lower mold in the lower mold assembly 24 to provide space for pin stamping and determine the shape of the pin after molding; the height of the raised upper surface on the inner side of the molding groove 25 is lower than the upper surface of the lower mold, which can limit the semiconductor chip after placing it. The lower surface of each upper mold in the upper mold group 26 is provided with a protrusion structure, the shape of which matches the forming groove 25 of each lower mold, and is used to stamp the pin; the groove part in the middle of the upper mold protrusion structure can cooperate with the lower mold to limit the semiconductor chip during the stamping process to prevent the semiconductor chip from shifting. A group of countersunk holes are opened on the opposite surfaces of each group of upper and lower molds. In this embodiment, two countersunk holes are provided to place bolts connecting the upper and lower mold seats to prevent the exposed bolts from damaging the semiconductor chip.

[0038] In the present invention, the upper and lower molds in the lower mold group 24 and the upper mold group 26 can be lead frame stamping molds. When producing a variety of different types of lead frames, different types of lead frame stamping molds can be installed in the upper and lower mold bases, and the molds can be switched according to the product conditions during the production process; the lead frame stamping mold and the pin forming mold described above can also be used in a mixed design, so that the equipment can be used in different processes by switching the upper and lower molds, saving production time. Because the upper and lower mold bases in the present invention are both supported by a rotating shaft, the present invention is more suitable for stamping plates with smaller thickness.

[0039] When the present invention is in use, the information of the upper and lower molds to be used is first set. After the setting is completed, the first motor 15 is started to control the upper mold base 16 to start rotating. After the first auxiliary positioning sensor 27 senses the first trigger member corresponding to the upper mold, the first motor 15 starts to decelerate; after the first positioning sensor 20 senses the first trigger member corresponding to the upper mold, the first motor 15 stops rotating. At this time, the required upper mold is facing downward and in a horizontal state; after the first motor 15 stops, the second motor 5 is started to control the lower mold base 6 to start rotating. After the second auxiliary positioning sensor 28 senses the second trigger member corresponding to the lower mold, the second motor 5 starts to decelerate; after the second positioning sensor 22 senses the second trigger member corresponding to the lower mold, the second motor 5 stops rotating. At this time, the required lower mold is facing upward and in a horizontal state, parallel to the upper mold. After the second motor 5 stops, the second hydraulic cylinder 9 starts to push the lower die support plate 10 upward. When the piston rod of the second hydraulic cylinder 9 reaches the upper limit, the lower die support plate 10 contacts the lower surface of the lower die 6. After completion, the semiconductor chip that needs to undergo the pin stamping process is placed in the lower die, and the first hydraulic cylinder 11 is started to push the upper die downward to perform the stamping process. After the stamping is completed, the first hydraulic cylinder 11 is reset. When it is necessary to switch the model of the upper and lower dies, reset the second hydraulic cylinder 9, and then reset the information of the upper and lower dies to be used, and repeat the above positioning steps to switch the upper and lower dies.

Claims

1. A sheet metal material stamping equipment, comprising a base; a frame including a left plate, a right plate and a top plate is fixed on the base, and the top plate connects the left plate and the right plate at their upper parts; an upper die seat and a lower die seat are arranged between the top plate and the base, a lifting plate is arranged below the top plate, a first hydraulic cylinder is installed above the top plate, a piston rod of the first hydraulic cylinder is connected to the lifting plate, two vertical plates fixedly connected thereto are provided below the lifting plate, an upper die seat is installed between the two vertical plates via a first rotating shaft, and the first rotating shaft is connected to a first motor installed on the lifting plate; the upper die seat is a transversely arranged multi-prism, and an upper die seat positioning mechanism is arranged between the upper die seat and the lifting plate; its characteristics are: An upper die installation groove is provided on at least a portion of the surface of the upper die seat, an upper die assembly including at least one upper die is provided in the upper die installation groove, and the upper die assembly is fixed in the upper die installation groove by bolts; The lower die base is installed on the left plate and the right plate through a second rotating shaft, and the second rotating shaft is connected to the second motor; the lower die base is a transversely arranged multi-prism, at least a part of its surface is provided with a lower die installation groove, a lower die assembly including at least one lower die is arranged in the lower die installation groove, and the lower die assembly is fixed in the lower die installation groove by bolts; A second hydraulic cylinder is arranged on the base, and a piston rod of the second hydraulic cylinder is upwardly connected to a lower die seat support plate; the lower die seat support plate can cooperate with the bottom surface of the lower die seat; The upper die seat positioning mechanism includes a first positioning sensor arranged on a vertical plate of the lifting plate, and a first trigger member group is arranged on the side of the upper die seat adjacent to the vertical plate, each first trigger member in the first trigger member group corresponds to a surface of the upper die seat, and when it cooperates with the first positioning sensor, the surface of the upper die seat faces downward and is in a position perpendicular to the piston rod of the first hydraulic cylinder; A first auxiliary positioning sensor corresponding to the position of the first trigger member is arranged on the vertical plate in the front direction of the first positioning sensor.

2. The sheet metal material stamping equipment according to claim 1, characterized in that: The first triggering member is T-shaped, with a top surface fixedly connected to the upper die base and a vertical surface perpendicular to the vertical plate of the lifting plate.

3. The sheet metal material stamping equipment according to claim 1 or 2, characterized in that: A second positioning sensor is arranged on the left side plate, and a second trigger member group for positioning the lower die base is arranged on the side surface of the lower die base adjacent to the second positioning sensor; each second trigger member in the second trigger member group corresponds to a surface of the lower die base, and when it cooperates with the second positioning sensor, the surface of the lower die base faces upward and is in a position perpendicular to the piston rod of the first hydraulic cylinder.

4. The sheet metal material stamping equipment according to claim 3, characterized in that: The second triggering member is T-shaped, with a top surface fixedly connected to the lower die base and a vertical surface perpendicular to the left side plate.

5. The sheet metal material stamping equipment according to claim 3 is characterized in that: In the front direction of the second positioning sensor, a second auxiliary positioning sensor corresponding to the position of the second triggering member is arranged on the side plate where the second positioning sensor is located.

6. The sheet metal material stamping equipment according to claim 1 or 2, characterized in that: The upper die seat or the lower die seat is a regular polygonal prism.

7. The sheet metal material stamping equipment according to claim 6, characterized in that: The upper die base or the lower die base has an even number of surfaces, and the upper surface of the lower die base support plate is a plane.

8. The sheet metal material stamping equipment according to claim 6, characterized in that: A gripping space is provided between the upper die and the upper die mounting groove on the upper die base; or a gripping space is provided between the lower die and the lower die mounting groove on the lower die base.

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