A stamping and drawing die

Abstract

The present invention relates to a stamping and drawing die. The stamping and drawing die comprises a stamping upper die, the lower end surface of the stamping upper die is provided with an elastic structure and an upper pressing plate, the elastic structure is connected to the upper pressing plate, the elastic structure is located between the stamping upper die and the upper pressing plate, when the upper pressing plate approaches the lower end surface of the stamping upper die, the elastic structure generates resistance, the upper pressing plate comprises a plurality of groups of pressing plates, the lower end of the stamping upper die is connected to a drawing die body, the pressing plate does not cover the position of the drawing die body; the elastic structure comprises an integrated elastic layer, a corrugated telescopic tube is inserted into the elastic layer, the corrugated telescopic tube is telescopic in the vertical direction, the lower end of the corrugated telescopic tube is fixed to the pressing plate, and the upper end of the corrugated tube is fixed to the lower end of the upper die; the stamping and drawing die has a simple structure, is easy to operate, is flexible to use, helps to improve the quality of the workpiece after drawing, and is convenient for popularization and use.

Description

Technical Field

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

[0002] With the continuous development of the manufacturing industry, the pursuit of product quality and saving manufacturing costs have become two major issues that companies are very concerned about. In the field of stamping and forming of automobile panels, the amount of stamping material inflow generated by different product shapes is also different. If not handled and controlled, excessive material inflow will cause wrinkles on the stamping sheet, thereby destroying the stamping effect and affecting the quality of the entire vehicle. Especially for the side panels, hoods, roofs and door panels of automobiles, which are the most important stamping parts among all kinds of automobile exterior panels, their quality directly affects the appearance and safety performance of the car.

[0003] Traditional stamping and drawing dies prepare an upper die that meets the requirements for workpiece processing, and then directly drive the upper die to stamp and draw the workpiece through a pressing mechanism. In order to improve the stability of the workpiece during processing, a positioning column is also provided to cooperate with the bottom plate of the upper die to achieve the positioning of the workpiece. However, the bottom plate of the upper die is in direct contact and cannot well meet the pressing effect during the drawing of the workpiece. Its material is too rigid and may also cause damage to the surface of the workpiece. Summary of the invention

[0004] The purpose of the present invention is to provide a stamping and drawing die with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A stamping and drawing die comprises a stamping upper die, the lower end face of the stamping upper die is provided with an elastic structure and an upper pressure plate, the elastic structure is connected to the upper pressure plate, the elastic structure is located between the stamping upper die and the upper pressure plate, when the upper pressure plate approaches the lower end face of the stamping upper die, the elastic structure generates resistance, the upper pressure plate comprises a plurality of groups of pressure plates, the lower end of the stamping upper die is connected to a drawing die body, and the pressure plate does not cover the position of the drawing die body.

[0007] As a further optimization scheme of the present invention, the elastic structure includes an integrated elastic layer, a bellows expansion tube is inserted into the interior of the elastic layer, the bellows expansion tube expands and contracts in the vertical direction, the lower end of the bellows expansion tube is fixed to the pressure plate, and the upper end of the bellows is fixed to the lower end of the upper mold.

[0008] As a further optimization scheme of the present invention, the elastic structure includes several groups of spring package columns, the number of the spring package columns is the same as the number of the pressure plates, and the upper end surfaces of the spring package columns are in contact with the lower end outer surface of the stamping upper die, and the lower end surfaces of the spring package columns are in contact with the upper end surface of the pressure plate.

[0009] As a further optimization scheme of the present invention, the elastic structure also includes an auxiliary elastic mechanism, which includes a pressure rod, the bullet column is wrapped around the outer surface of the pressure rod, the upper end of the pressure rod is connected to a No. 2 connecting column, the interior of the No. 2 connecting column is connected to a compression spring, one end of the compression spring is in contact with the upper end of the pressure rod, the pressure rod is located in the No. 2 connecting column, and the compression spring moves by compressing or stretching; the upper end of the stamping upper mold is not sealed, and an installation groove is provided, the bottom surface of the installation groove is provided with an installation hole, the No. 2 connecting column is cooperatively connected to the installation hole, and the drawing mold body includes a No. 1 connecting column, and the No. 1 connecting column is cooperatively connected to the installation hole.

[0010] As a further optimization scheme of the present invention, the elastic structure also includes an elastic force adjustment mechanism, the elastic force adjustment mechanism includes a driving member, the upper end of the compression spring contacts a movable plate, and the driving member drives the movable plate to move up and down along the second connecting column.

[0011] As a further optimization scheme of the present invention, a slideway is provided on the inner wall surface of the stamping upper die, and the stamping upper die is slidably connected to a control board via the slideway, and the control board is detachably connected to the driving member.

[0012] As a further optimization solution of the present invention, the driving member includes a driving motor, the output shaft of the driving motor is connected to a built-in screw, and the moving plate is sleeved on the outer surface of the built-in screw and moves up and down along the built-in screw.

[0013] As a further optimization scheme of the present invention, a limiting plate is provided at the upper end of the pressure rod, and the limiting plate limits the pressure rod from sliding out of the second connecting column. A connecting hole is opened on the outer surface of the upper end of the limiting plate, and the built-in screw can be inserted into the connecting hole.

[0014] As a further optimization scheme of the present invention, the driving member includes a telescopic cylinder member, the output end of the cylinder member is connected to the movable plate, the number of the cylinder members is the same as the number of the pressure plates, the outer surface of the control plate is connected to an air pipe, the air pipe is connected to a plurality of branches, and the branch pipes are connected to the cylinder member.

[0015] As a further optimization scheme of the present invention, the elastic force adjustment mechanism includes a control machine, the control end of the control machine is connected to the driving member, a pressure sensor is arranged in the No. 2 connecting column, the pressure sensor senses the elastic force of the compression spring, and the data output end of the pressure sensor is electrically connected to the input end of the control machine.

[0016] The beneficial effects of the present invention are as follows: the present invention is provided with an elastic structure, which can give the pressure plate adaptability after the pressure plate contacts the workpiece, prevent wrinkles on the surface of the processed workpiece, and improve the success rate of drawing; the elastic structure can be an elastic layer, and the elastic layer is made of rubber, which is easy to install and low in price; the elastic structure can also be a separate elastic package column, which is convenient for it to extend to all sides when compressed, reducing the horizontal lateral force on the pressure plate and preventing it from affecting the pressure on the processed workpiece; the elastic structure can also include an auxiliary elastic mechanism, when the lower end face of the pressure plate contacts the workpiece, the pressure plate moves upward, squeezes the elastic package column, and at the same time enters the second connecting column through the pressure rod to squeeze the compression spring to move, further improving The elastic support of the whole device is provided, and the wrinkle resistance of the processed workpiece is further improved; the elastic structure can also include an elastic force adjustment mechanism, which includes a driving member, and the upper end of the compression spring contacts a movable plate, and the driving member drives the movable plate to move up and down along the second connecting column, and the elastic force of the compression spring is adjusted by the position of the movable plate; the elastic force adjustment mechanism and the auxiliary elastic mechanism in the elastic structure cooperate with each other, and when pressing the workpiece, the pressing force of the pressing plate at each position can be adjusted, and in the actual drawing of the workpiece, the possibility of wrinkles during drawing is greatly reduced; the whole device has a simple structure, is easy to operate, and is flexible to use, which helps to improve the quality of the workpiece after drawing and is convenient for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic diagram of the internal structure of the elastic layer in Example 1 of the present invention;

[0019] Figure 3 is a schematic diagram of the bottom structure of Example 2 of the present invention after the pressure rod is removed;

[0020] Figure 4 It is a structural schematic diagram of the stamping upper die in the driving mode of the driving motor of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the stamping upper die in the cylinder drive mode of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the second connecting column under the driving motor driving mode of the present invention.

[0023] In the figure: 1. stamping upper die; 2. elastic layer; 3. upper pressure plate; 4. connecting plate; 5. mounting groove; 6. pressure rod; 7. spring column; 8. pressure plate; 9. drawing die body; 10. No. 1 connecting column; 11. control board; 12. driving motor; 13. limit plate; 14. No. 2 connecting column; 15. compression spring; 16. built-in screw; 17. rotating connecting pipe; 18. moving plate; 19. connecting hole; 20. slideway; 21. fixed screw ring; 22. cylinder part; 23. gas pipe; 24. top plate. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Example 1

[0026] like Figure 1 As shown, a stamping and drawing die comprises a stamping upper die 1, the lower end surface of the stamping upper die 1 is provided with an elastic structure and an upper pressing plate 3, the elastic structure is connected to the upper pressing plate 3, the elastic structure is located between the stamping upper die 1 and the upper pressing plate 3, when the upper pressing plate 3 is close to the lower end surface of the stamping upper die 1, the elastic structure generates resistance, the upper pressing plate 3 comprises a plurality of groups of pressing plates 8, the lower end of the stamping upper die 1 is connected with a drawing die body 9, the pressing plate 8 does not cover the position of the drawing die body 9; the elastic structure comprises an integrated elastic layer 2, the distance between the plurality of groups of pressing plates 8 is very close, in this embodiment, a notch is provided on the outer surface of the elastic layer 2, the drawing die body 9 is located in the notch, according to the different positions of the drawing die body 9, the actual position of the notch of the elastic layer 2 is different, and as Figure 2 As shown, a bellows expansion tube is inserted into the elastic layer 2, and the bellows expansion tube expands and contracts in the vertical direction. The lower end of the bellows expansion tube is fixed to the pressure plate 8, and the upper end of the bellows is fixed to the lower end of the stamping upper mold 1. The bellows expansion tube only provides a certain degree of elasticity in the vertical direction. The stability of the separate pressure plate 8 is further improved by the bellows expansion tube. When the surface of the workpiece is pressed, the elastic layer 2 is squeezed, and the separate pressure plate 8 will not be affected by the side sliding deviation due to the tiny gap between them. The technical solution in this embodiment has been verified by actual experiments. By setting the elastic layer 2, the surface of the processed workpiece can be prevented from wrinkling, thereby improving the success rate of drawing.

[0027] Example 2

[0028] A stamping and drawing die prepared on the basis of the above-mentioned embodiment 1 comprises a stamping upper die 1, wherein the lower end surface of the stamping upper die 1 is provided with an elastic structure and an upper pressing plate 3, wherein the elastic structure is connected to the upper pressing plate 3, and wherein the elastic structure is located between the stamping upper die 1 and the upper pressing plate 3, wherein when the upper pressing plate 3 approaches the lower end surface of the stamping upper die 1, the elastic structure generates resistance, wherein the upper pressing plate 3 comprises a plurality of groups of pressing plates 8, wherein the lower end of the stamping upper die 1 is connected with a drawing die body 9, wherein the pressing plate 8 does not cover the position of the drawing die body 9;

[0029] In this embodiment, the elastic structure includes several groups of elastic package columns 7, that is, in this embodiment, the so-called elastic layer 2 is composed of several groups of elastic package columns 7, the number of the elastic package columns 7 is the same as the number of the pressure plates 8, and the upper end faces of the elastic package columns 7 are in contact with the lower end outer surface of the stamping upper die 1, and the lower end faces of the elastic package columns 7 are in contact with the upper end face of the pressure plate 8. In this embodiment, the structure of the elastic package columns 7 is a columnar shape with narrow upper and lower end faces and a wide middle part. There are gaps between several groups of elastic package columns 7, and the elastic package columns 7 correspond to the pressure plates 8 one by one. After the bottom surface of the pressure plate 8 contacts the workpiece, the pressure plate 8 compresses the elastic package columns 7, and the elastic package columns 7 extend to the surrounding areas. Compared with the technical solution in Example 1, it further reduces the lateral movement force exerted on each pressure plate 8 by dividing a layer of elastic layer 2 into several groups of elastic package columns 7, so that the pressure plate 8 only provides a vertical pressing force, thereby preventing the lateral movement force exerted on the pressure plate 8 from affecting the pressing effect of the pressure plate 8.

[0030] Example 3

[0031] On the basis of Example 2, a stamping and drawing die is prepared, including a stamping upper die 1, wherein the lower end face of the stamping upper die 1 is provided with an elastic structure and an upper pressing plate 3, wherein the elastic structure is connected to the upper pressing plate 3, and the elastic structure is located between the stamping upper die 1 and the upper pressing plate 3. When the upper pressing plate 3 is close to the lower end face of the stamping upper die 1, the elastic structure generates resistance, and the upper pressing plate 3 includes a plurality of groups of pressure plates 8. The lower end of the stamping upper die 1 is connected to a drawing die body 9, and the pressure plate 8 does not cover the position of the drawing die body 9; the elastic structure includes a plurality of groups of spring-loaded columns 7, that is, in this embodiment, a so-called elastic layer 2 is composed of a plurality of groups of spring-loaded columns 7, wherein the number of the spring-loaded columns 7 is the same as the number of the pressure plates 8, and the upper end faces of the spring-loaded columns 7 are in contact with the outer surface of the lower end of the stamping upper die 1. , the lower end surface of the bullet column 7 is in contact with the upper end surface of the pressure plate 8; the elastic structure also includes an auxiliary elastic mechanism, the auxiliary elastic mechanism includes a pressure rod 6, the bullet column 7 is wrapped around the outer surface of the pressure rod 6, the upper end of the pressure rod 6 is connected to a No. 2 connecting column 14, the interior of the No. 2 connecting column 14 is connected to a compression spring 15, one end of the compression spring 15 is in contact with the upper end of the pressure rod 6, the pressure rod 6 is located in the No. 2 connecting column 14, and the compression or tension compression spring 15 moves; the upper end of the stamping upper die 1 is not sealed, and is provided with a mounting groove 5, the groove bottom surface of the mounting groove 5 is provided with a mounting hole, the No. 2 connecting column 14 is connected in cooperation with the mounting hole, and the drawing die body 9 includes a No. 1 connecting column 10, and the No. 1 connecting column 10 is connected in cooperation with the mounting hole;

[0032] In this embodiment, the auxiliary elastic mechanism is used to further improve the situation of elastic force shortage that cannot be dealt with and satisfied in embodiment 2, such as Figure 3-5 It can be seen from the structural diagram of the auxiliary elastic mechanism that when the lower end surface of the pressing plate 8 contacts the workpiece, the pressing plate 8 moves upward to squeeze the elastic package column 7, and at the same time, the pressing rod 6 enters the second connecting column 14 to squeeze the compression spring 15 to move, further improving the elastic support that the mold in the above-mentioned embodiment 1 and embodiment 2 cannot provide, and further improving the wrinkle resistance of the processed workpiece;

[0033] Furthermore, in this embodiment, Figure 4As shown, the No. 2 connecting column 14 is inserted and fixed in the stamping upper die 1, and the outer surface of the No. 2 connecting column 14 is connected with a threaded structure. The No. 2 connecting column 14 is threadedly connected to the internal entity part of the stamping upper die 1 through the threaded structure. The drawing die body 9 is also threadedly connected to the stamping upper die 1 through the No. 1 connecting column 10. The No. 1 connecting column 10 and the No. 2 connecting column 14 are the same size. The No. 2 connecting column 14 can be further provided with a fixed screw ring 21 at its upper end for reinforcement. In this embodiment, the disassembly of the No. 2 connecting column 14 is equivalent to the simultaneous disassembly of the pressure rod 6, the pressure plate 8 and the spring column 7 connected to the No. 2 connecting column 14, which is convenient for adjusting the position with the drawing die body 9. The stamping upper die 1 thus becomes an adjustable, detachable and installable die body, and the entire device is more practical.

[0034] Example 4

[0035] Based on the above embodiment 3, a stamping and drawing die is prepared, such as Figure 4-6 , including a stamping upper die 1, the lower end surface of the stamping upper die 1 is provided with an elastic structure and an upper pressing plate 3, the elastic structure is connected to the upper pressing plate 3, the elastic structure is located between the stamping upper die 1 and the upper pressing plate 3, when the upper pressing plate 3 is close to the lower end surface of the stamping upper die 1, the elastic structure generates resistance, the upper pressing plate 3 includes a plurality of groups of pressure plates 8, the lower end of the stamping upper die 1 is connected with a drawing die body 9, the pressure plate 8 does not cover the position of the drawing die body 9; the elastic structure includes a plurality of groups of spring package columns 7, that is, in this embodiment, the so-called elastic layer 2 is composed of a plurality of groups of spring package columns 7, the number of the spring package columns 7 is the same as the number of the pressure plates 8, and the upper end surface of the spring package columns 7 is in contact with the outer surface of the lower end of the stamping upper die 1, and the lower end of the spring package columns 7 The surface is in contact with the upper end surface of the pressure plate 8; the elastic structure also includes an auxiliary elastic mechanism, which includes a pressure rod 6, the elastic package column 7 is wrapped around the outer surface of the pressure rod 6, the upper end of the pressure rod 6 is connected to a No. 2 connecting column 14, the interior of the No. 2 connecting column 14 is connected to a compression spring 15, one end of the compression spring 15 is in contact with the upper end of the pressure rod 6, the pressure rod 6 is located in the No. 2 connecting column 14, and the compression or tension compression spring 15 moves; the upper end of the stamping upper die 1 is not sealed, and is provided with a mounting groove 5, the groove bottom surface of the mounting groove 5 is provided with a mounting hole, the No. 2 connecting column 14 is connected in cooperation with the mounting hole, and the drawing die body 9 includes a No. 1 connecting column 10, and the No. 1 connecting column 10 is connected in cooperation with the mounting hole;

[0036] The elastic structure also includes an elastic force adjustment mechanism, which includes a driving member. The upper end of the compression spring 15 contacts a movable plate 18, and the driving member drives the movable plate 18 to move up and down along the second connecting column 14. In this embodiment, an elastic force adjustment mechanism is provided, and the position of the compression spring 15 inside the second connecting column 14 (i.e., its compression state) is adjusted by the elastic force adjustment mechanism, thereby adjusting the elastic force state generated by the compression spring 15. In this embodiment, two groups of driving member driving modes are provided as follows: The first is: the driving member includes a driving motor 12, and the output shaft of the driving motor 12 is connected to a built-in screw 16, and the movable plate 18 is connected to the movable plate 18. 8 is sleeved on the outer surface of the built-in screw 16 and moves up and down along the built-in screw 16; a limit plate 13 is provided on the upper end of the pressure rod 6, and the limit plate 13 limits the pressure rod 6 from sliding out of the second connecting column 14, and a connecting hole 19 is opened on the upper outer surface of the limit plate 13, and the built-in screw 16 can be inserted into the connecting hole 19; the second type is: the driving member includes a telescopic cylinder member 22, the output end of the cylinder member 22 is connected to the moving plate 18, the number of the cylinder members 22 is the same as the number of the pressure plates 8, and the outer surface of the control plate 11 is connected to an air pipe 23, and the air pipe 23 is connected to a plurality of branches, and the branches are connected to the cylinder member 22;

[0037] In the first method, the driving motor 12 is generally a stepping motor, and the built-in screw 16 is driven by the driving motor 12 to rotate, so that when the moving plate 18 fits in the second connecting column 14 and cannot rotate, the moving plate 18 moves down to squeeze the compression spring 15. In addition, in this method, a limit plate 13 with a connecting hole 19 can be provided, and the pressure rod 6 is in a hollow state. When the distance is limited, the built-in screw 16 can be inserted into the interior of the pressure rod 6; in the second method, a telescopic cylinder part 22 is directly used to compress and adjust the position of the moving plate 18; the former method is more complicated to install and the regulation is more precise; the latter method is easy to install and easy to operate; in addition, other forms of driving parts can also be used to drive and adjust the elastic force of the compression spring 15.

[0038] Example 5

[0039] A stamping and drawing die is prepared on the basis of the above-mentioned embodiment 4, and the driving scheme of the driving motor 12 in the above-mentioned embodiment 4 is adopted. In this embodiment, Figure 4-6As shown, a top plate 24 is provided on the upper end face of the No. 2 connecting column 14, and a rotating connecting tube 17 is movably connected inside the top plate 24. The rotating connecting tube 17 is fixedly connected to the built-in screw 16. The rotating connecting tube 17 rotates at the top plate 24 and cannot move up and down. A driving groove is provided on the upper end face of the rotating connecting tube 17, and a tooth mark is provided on the groove wall. A slideway 20 is provided on the inner wall surface of the stamping upper mold 1. The stamping upper mold 1 is slidably connected to a control board 11 through the slideway 20. The control board 11 is detachably connected to a driving motor 12. When in use, the control board 11 slides down directly, and the driving shaft of the driving motor 12 (the shaft end is fixedly connected to a gear matching the driving groove) is inserted into the driving groove. The control board 11 is fixed, and the rotating connecting tube 17 can be driven to rotate, thereby achieving rapid assembly and controlling the movement of the movable plate 18. The entire device is more practical.

[0040] Example 6

[0041] A stamping and drawing die is prepared on the basis of Example 4 or Example 5, wherein the elastic force adjustment mechanism includes a control machine, wherein the control end of the control machine is connected to the driving member, and a pressure sensor is arranged in the No. 2 connecting column 14, wherein the pressure sensor senses the elastic force of the compression spring 15, and the data output end of the pressure sensor is electrically connected to the input end of the control machine.

[0042] In Example 4, Example 5 and this Example 6, an elastic force adjustment mechanism is used. Actually, it is to cope with the fact that when the workpiece is drawn, the relative force generated on the surface of the entire workpiece is not the same, and some places should require a stronger pressing force. In Example 4 and Example 5, empirical judgment and manual adjustment are used to adjust the elastic force of certain elastic structures. In this embodiment, the situation during the drawing process can be simulated and calculated by computer finite element analysis, and then the state of the compression spring 15 at the corresponding position can be adjusted by the control machine. The actual situation of the elastic force of the compression spring 15 can be obtained through feedback from the pressure sensor. In this embodiment, the pressure sensor can be set at a place where the upper and lower ends of the compression spring 15 can contact.

[0043] It should be noted that, when the stamping and drawing die is in use, the outer surface of the stamping upper die 1 is also fixedly connected to a connecting plate 4, which is generally connected to a pressing mechanism or a guiding mechanism, which will not be described again here.

[0044] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A stamping and drawing die, characterized in that: It comprises a stamping upper die (1), the lower end surface of the stamping upper die (1) is provided with an elastic structure and an upper pressing plate (3), the elastic structure is connected to the upper pressing plate (3), the elastic structure is located between the stamping upper die (1) and the upper pressing plate (3), when the upper pressing plate (3) is close to the lower end surface of the stamping upper die (1), the elastic structure generates resistance, the upper pressing plate (3) comprises a plurality of groups of pressure plates (8), the lower end of the stamping upper die (1) is connected to a drawing die body (9), and the pressure plate (8) does not cover the position of the drawing die body (9); The elastic structure comprises a plurality of groups of elastic column (7), the number of the elastic column (7) is the same as the number of the pressure plate (8), the upper end surface of the elastic column (7) is in contact with the lower end outer surface of the stamping upper die (1), and the lower end surface of the elastic column (7) is in contact with the upper end surface of the pressure plate (8); The elastic structure also includes an auxiliary elastic mechanism, which includes a pressure rod (6), the elastic column (7) is wrapped around the outer surface of the pressure rod (6), the upper end of the pressure rod (6) is connected to a No. 2 connecting column (14), the interior of the No. 2 connecting column (14) is connected to a compression spring (15), one end of the compression spring (15) contacts the upper end of the pressure rod (6), the pressure rod (6) is located in the No. 2 connecting column (14), and the compression or tension compression spring (15) moves; the upper end of the stamping upper die (1) is not sealed, and is provided with a mounting groove (5), the groove bottom surface of the mounting groove (5) is provided with a mounting hole, the No. 2 connecting column (14) is connected in cooperation with the mounting hole, and the drawing die body (9) includes a No. 1 connecting column (10), and the No. 1 connecting column (10) is connected in cooperation with the mounting hole; The elastic structure also includes an elastic force adjustment mechanism, which includes a driving member, the upper end of the compression spring (15) contacts a moving plate (18), and the driving member drives the moving plate (18) to move up and down along the second connecting column (14); The elastic force adjustment mechanism comprises a control machine, a control end of the control machine is connected to a driving member, a pressure sensor is arranged in the second connecting column (14), the pressure sensor senses the elastic force of a compression spring (15), and a data output end of the pressure sensor is electrically connected to an input end of the control machine.

2. A stamping and drawing die according to claim 1, characterized in that: The inner wall surface of the stamping upper die (1) is provided with a slideway (20), and the stamping upper die (1) is slidably connected to a control board (11) via the slideway (20), and the control board (11) is detachably connected to the driving member.

3. The stamping and drawing die according to claim 1, characterized in that: The driving member comprises a driving motor (12), the output shaft of the driving motor (12) is connected to an internal screw rod (16), and the moving plate (18) is sleeved on the outer surface of the internal screw rod (16) and moves up and down along the internal screw rod (16).

4. A stamping and drawing die according to claim 3, characterized in that: A limiting plate (13) is provided at the upper end of the pressure rod (6), and the limiting plate (13) limits the pressure rod (6) from sliding out of the second connecting column (14). A connecting hole (19) is provided on the outer surface of the upper end of the limiting plate (13), and the built-in screw rod (16) can be inserted into the connecting hole (19).

5. The stamping and drawing die according to claim 2, characterized in that: The driving member comprises a telescopic cylinder member (22), the output end of the cylinder member (22) is connected to the movable plate (18), the number of the cylinder members (22) is the same as the number of the pressure plates (8), the outer surface of the control plate (11) is connected to an air supply pipe (23), the air supply pipe (23) is connected to a plurality of groups of branch pipes, and the branch pipes are in communication with the cylinder member (22).

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