Stamping die applied to automobile chassis component and stamping method of stamping die

Abstract

The invention relates to a stamping die applied to an automobile chassis component and a stamping method thereof.The stamping die comprises a rack, an upper movable die arranged above the rack and driven by a hydraulic mechanism and a fixing base fixed to the surface of the rack, and a conveying mechanism used for conveying workpieces is arranged on the surface of the rack; the top of the fixing base is movably connected with a lower die base, and an inner cavity of the fixing base is slidably connected with a positioning rod driven by a hydraulic cylinder. According to the stamping die applied to the automobile chassis component and the stamping method of the stamping die, automatic ejection is conducted through movement of the stamping die during demolding, automatic reset can be achieved after ejection is completed, the situation that workpiece positioning deviation is caused by large ejection force and subsequent machining movement is affected can be prevented through magnetic adsorption, discharging can be conducted without blockage, and the production efficiency is improved. And the positioning precision is not influenced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile chassis stamping, in particular to a stamping die and a stamping method for automobile chassis components. Background Art

[0002] Stamping is a production technology that uses the power of conventional or special stamping equipment to directly subject the sheet metal to deformation force in the die and deform it, thereby obtaining product parts of a certain shape, size and performance. The automobile chassis is composed of four parts: the transmission system, the running system, the steering system and the braking system. Therefore, it is an assembly structure formed by assembling multiple parts. In the processing of its parts, there are often many sheet metal structures. Therefore, stamping is required for stamping. However, the existing stamping equipment often has the following disadvantages when used:

[0003] (1) It takes multiple stamping processes to be completely formed. After stamping, it is easy to stick to the lower die due to the impact force. After being ejected by the ejection mechanism, it is easy to cause deviation, resulting in positioning failure. There will be errors when it is transported by the transfer equipment.

[0004] (2) The special-shaped workpiece needs to be adsorbed by adjusting the suction cup position each time, which is complicated to operate. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a stamping die and a stamping method for automobile chassis components, which solve the above-mentioned problems.

[0006] To achieve the above purpose, the present invention is implemented through the following technical solutions: a stamping die for automobile chassis components, comprising a frame, an upper movable die driven by a hydraulic mechanism above the frame, and a fixed seat fixed on the surface of the frame, the surface of the frame is provided with a conveying mechanism for conveying workpieces, the top of the fixed seat is movably connected to a lower die seat, the inner cavity of the fixed seat is slidably connected to a positioning rod driven by a hydraulic cylinder, the inner cavity of the lower die seat is provided with a positioning groove that is clamped with the surface of the positioning rod, and the inner cavity of the fixed seat is fixedly connected to A pneumatic piston rod is connected, one end of the pneumatic piston rod is fixedly connected to a top block, one end of the top block passes through and extends to the inner cavity of the lower die seat, the inner cavity of the lower die seat is provided with an ejection groove slidably connected to the surface of the top block, the surface of the upper movable die is fixedly connected to a push plate, the surface of the frame is fixedly connected to a motion compensation spring, the bottom end of the motion compensation spring is fixedly connected to a spring airbag located above the push plate, one end of the spring airbag is connected to the inner cavity of the pneumatic piston rod through a ventilation pipe, the top of the top block is made of magnetic material, and when in use At this time, the workpiece is conveyed step by step to different upper movable dies and lower die seats through the conveying mechanism for step-by-step stamping. After the stamping is completed, the workpiece may adhere to the lower die seat due to pressure. At this time, the upper movable die rises and resets, hitting the spring airbag. The spring airbag moves upward and contracts while squeezing the motion compensation spring. At this time, the gas in the spring airbag enters the pneumatic piston rod through the ventilation pipe, driving the top block at the top of the pneumatic piston rod to lift the workpiece for demoulding, and adsorbs and positions the workpiece through its own magnetic material. At this time, the motion compensation spring is contracted and depressurized, and the spring airbag squeezes the motion compensation spring upward to relax, and then the gas inside the pneumatic piston rod is extracted. At this time, the top block descends and is retracted into the ejection groove, and the workpiece is driven downward by magnetic adsorption, and then falls on the surface of the lower die seat. It is automatically ejected by its own movement during demoulding, and can be automatically reset after ejection. In addition, magnetic adsorption can prevent the ejection force from causing the workpiece positioning to deviate, affecting subsequent processing movements, and can discharge materials without jamming, and does not affect positioning accuracy.

[0007] As a further solution of the present invention: two pneumatic piston rods and two spring airbags are provided, and are symmetrically arranged in groups of two. The pneumatic piston rod is supplied with air or exhausted by the contraction state of the spring airbag, thereby driving the pneumatic piston rod to rise and fall.

[0008] As a further solution of the present invention: when the push plate is raised to the uppermost position, the spring airbag contacts the push plate.

[0009] As a further solution of the present invention: a boss is provided at the bottom of the lower die base, and a groove matching the boss is provided in the inner cavity of the fixed base. Through the arrangement of the boss and the groove, the lower die base can be quickly disassembled and replaced with the corresponding product according to different processing requirements. Then, the positioning rod is driven by the hydraulic cylinder to extend and be inserted into the positioning groove in the inner cavity of the lower die base to position the lower die base.

[0010] As a further solution of the present invention: the outer periphery of the bottom boss of the lower die seat is provided with a buffer ring abutting against the inner groove of the fixed seat, thereby converting the hard connection into a soft connection. When subjected to the impact of the upper movable die above, the joint is buffered to prevent excessive impact force from causing dislocation.

[0011] As a further solution of the present invention: the conveying mechanism includes a track frame driven to reciprocate on the surface of the frame by a driving mechanism, and the track frame performs a reciprocating motion of rising - moving right - descending - rising - moving left - descending on the surface of the frame, continuously conveying the product of the previous station to the next stamping station for processing.

[0012] As a further solution of the present invention, a connecting plate is fixedly connected to the surface of the track frame, one side of the connecting plate is fixedly connected to the fixing plate, the top of the connecting plate is slidably connected to a movable plate driven by the first cylinder, the inner cavity of the fixing plate is provided with a sliding groove, the inner cavity of the sliding groove is slidably connected to a lifting cylinder, the bottom of the lifting cylinder is connected to a suction cup connected to a negative pressure mechanism, the top of the lifting cylinder is fixedly connected to a guide rod, one end of the guide rod passes through the movable plate and extends to the top of the movable plate, the inner cavity of the movable plate is provided with a guide groove movably connected to the surface of the guide rod, the top of the lifting cylinder is fixedly connected to a pressure sensor, the surface of the guide rod is sleeved with a return spring, the two ends of the return spring are respectively fixedly connected to the movable plate and one side of the pressure sensor, the inner cavity of the sliding groove is rotatably connected to a ball rollingly connected to the surface of the lifting cylinder, the inner cavity of the fixed plate is slidably connected to a pressure plate through an embedded groove, the pressure plate is located in the middle section of the sliding groove, and the embedded groove is connected to the sliding groove, The pressing plate is driven by a second cylinder fixed in the inner cavity of the fixed plate. When in use, different workpieces need to be processed, and the position of the suction cup needs to be adjusted each time. At this time, the workpiece is placed at the bottom, and then the track frame is driven to move downward, driving the connecting plate, the fixed plate and the movable plate to move downward. At this time, the suction cup abuts against different points of the workpiece below, and the suction cup is squeezed, pushing the lifting cylinder to move upward in the sliding groove. At this time, the reset spring is squeezed upward by the pressure sensor, and then the track frame descends to the fixed point until all the pressure sensors detect the extrusion data. At this time, the second cylinder is started to drive the pressing plate to move from the embedded groove to the sliding groove, abutting against the side of the lifting cylinder, and limiting the lifting cylinder. All the suction cups can be positioned at one time so that they can adapt to the uneven surface of the workpiece and can be adjusted quickly without manual proofreading one by one. Then the first cylinder is started to drive the movable plate to rise upward, and the reset spring is depressurized to prevent it from being compressed for a long time and affecting the deformation effect.

[0013] As a further solution of the present invention: a plurality of lifting cylinders are provided and are evenly arranged in the inner cavity of the fixed plate.

[0014] The present invention also discloses a stamping method applied to a stamping die for an automobile chassis component, comprising the following steps:

[0015] Step 1, place the workpiece at the bottom, and then drive the track frame to move downward, driving the connecting plate, the fixed plate and the movable plate to move downward. At this time, the suction cup abuts against different points of the workpiece below, and the suction cup is squeezed, pushing the lifting cylinder to move upward in the sliding groove. At this time, the reset spring is squeezed upward by the pressure sensor, and then the track frame descends to the fixed point until all the pressure sensors detect the extrusion data. At this time, the second cylinder is started to drive the pressure plate to move from the embedded groove to the sliding groove, abutting against the side of the lifting cylinder, and limiting the lifting cylinder. All the suction cups can be positioned at one time so that they can adapt to the uneven surface of the workpiece, and can be adjusted quickly without manual proofreading one by one. Then, the first cylinder is started to drive the movable plate to rise upward to relieve the pressure on the reset spring;

[0016] Step 2: The workpiece is transported step by step to different upper movable dies and lower die seats by a conveying mechanism for stamping step by step;

[0017] Step three, the upper movable die descends for stamping. After the stamping is completed, the upper movable die rises and resets, hitting the spring airbag. The spring airbag moves upward and contracts while squeezing the motion compensation spring. At this time, the gas in the spring airbag enters the pneumatic piston rod through the ventilation pipe, driving the top block at the top of the pneumatic piston rod to lift the workpiece for demoulding, and adsorbs and positions the workpiece through its own magnetic material. At this time, the motion compensation spring is contracted and depressurized, and the spring airbag squeezes the motion compensation spring upward to relax, and then the gas inside the pneumatic piston rod is extracted. At this time, the top block descends and is retracted into the ejection groove, and the workpiece is driven to move downward by magnetic adsorption, and then falls on the surface of the lower die seat. When demolding, it uses its own movement to automatically eject, and it can automatically reset after ejection. In addition, magnetic adsorption can prevent the ejection force from causing the workpiece positioning to shift, affecting subsequent processing movements, and can discharge materials without jamming without affecting positioning accuracy.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention can automatically eject the workpiece by its own movement during demoulding, and can automatically reset after ejection. Moreover, magnetic adsorption can prevent the workpiece positioning deviation caused by strong ejection force, which affects subsequent processing movements. The material can be ejected without jamming and does not affect the positioning accuracy.

[0020] 2. The present invention can position all suction cups at one time so that they can adapt to the uneven surface of the workpiece and can be adjusted quickly without manual calibration one by one. Then, the first cylinder is started to drive the movable plate to rise upward to relieve the pressure on the reset spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 It is a structural schematic diagram of the connecting plate of the present invention;

[0024] Figure 4 It is a top view of the structure of the fixing plate of the present invention.

[0025] In the figure: 1. frame; 2. upper movable mold; 3. fixed seat; 4. push plate; 5. lower mold seat; 6. positioning groove; 7. positioning rod; 8. pneumatic piston rod; 9. ejector block; 10. ejector groove; 11. spring airbag; 12. motion compensation spring; 13. ventilation duct; 14. track frame; 15. connecting plate; 16. fixed plate; 17. ball bearing; 18. sliding groove; 19. second cylinder; 20. embedded groove; 21. pressure plate; 22. lifting cylinder; 23. suction cup; 24. reset spring; 25. guide groove; 26. movable plate; 27. first cylinder; 28. pressure sensor. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0027] See also Figure 1-4The present invention provides a technical solution: a stamping die for automobile chassis components, comprising a frame 1, an upper movable die 2 driven by a hydraulic mechanism above the frame 1, and a fixed seat 3 fixed on the surface of the frame 1, the surface of the frame 1 is provided with a conveying mechanism for conveying a workpiece, a lower die seat 5 is movably connected to the top of the fixed seat 3, a positioning rod 7 driven by a hydraulic cylinder is slidably connected to the inner cavity of the fixed seat 3, a positioning groove 6 is provided in the inner cavity of the lower die seat 5 for clamping with the surface of the positioning rod 7, a pneumatic piston rod 8 is fixedly connected to the inner cavity of the fixed seat 3, and the pneumatic piston rod 8 is fixedly connected to the inner cavity of the fixed seat 3. One end of 8 is fixedly connected with a top block 9, one end of the top block 9 penetrates and extends to the inner cavity of the lower die seat 5, the inner cavity of the lower die seat 5 is provided with an ejection groove 10 which is slidably connected with the surface of the top block 9, the surface of the upper movable die 2 is fixedly connected with a push plate 4, the surface of the frame 1 is fixedly connected with a motion compensation spring 12, the bottom end of the motion compensation spring 12 is fixedly connected with a spring airbag 11 located above the push plate 4, one end of the spring airbag 11 is connected with the inner cavity of the pneumatic piston rod 8 through a ventilation pipe 13, the top of the top block 9 is made of magnetic material, and the workpiece is moved by the conveying mechanism during use The workpiece is transported step by step to different upper movable molds 2 and lower mold bases 5 for step-by-step stamping. After the stamping is completed, the workpiece may adhere to the lower mold base 5 due to pressure. At this time, the upper movable mold 2 rises and resets, hitting the spring airbag 11. The spring airbag 11 moves upward and contracts while squeezing the motion compensation spring 12. At this time, the gas in the spring airbag 11 enters the pneumatic piston rod 8 through the ventilation pipe 13, driving the top block 9 at the top of the pneumatic piston rod 8 to lift the workpiece for demoulding, and adsorbs and positions the workpiece through its own magnetic material. At this time, the motion compensation spring 1 2 After the contraction is completed, the pressure is released, the spring airbag 11 squeezes the motion compensation spring 12 upward to relax, and then the gas inside the pneumatic piston rod 8 is extracted. At this time, the ejector block 9 is retracted into the ejection groove 10, and the workpiece is driven to move downward by magnetic adsorption, and then falls on the surface of the lower die seat 5. When demolding, it is automatically ejected by its own movement, and it can be automatically reset after ejection. In addition, magnetic adsorption can prevent the ejection force from causing the workpiece positioning deviation, affecting the subsequent processing movement, and can be discharged without jamming, and does not affect the positioning accuracy.

[0028] There are two pneumatic piston rods 8 and two spring airbags 11, which are symmetrically arranged in groups of two. The pneumatic piston rod 8 is supplied with air or exhausted by the contraction state of the spring airbag 11, thereby driving the pneumatic piston rod 8 to rise and fall.

[0029] When the push plate 4 is raised to the uppermost position, the spring airbag 11 contacts the push plate 4 .

[0030] A boss is provided at the bottom of the lower die base 5, and a groove matching the boss is provided in the inner cavity of the fixed base 3. Through the arrangement of the boss and the groove, the lower die base 5 can be quickly disassembled according to different processing requirements, and the lower die base 5 of the corresponding product can be replaced. Then, the positioning rod 7 is driven by the hydraulic cylinder to extend and insert into the positioning groove 6 in the inner cavity of the lower die base 5 to position the lower die base 5.

[0031] The outer periphery of the bottom boss of the lower die seat 5 is provided with a buffer ring that abuts against the inner groove of the fixed seat 3, converting the hard connection into a soft connection. When the upper movable die 2 is impacted, the joint is buffered to prevent excessive impact force from causing dislocation.

[0032] The conveying mechanism includes a track frame 14 driven by a driving mechanism to reciprocate on the surface of the frame 1. The track frame 14 performs a reciprocating motion of rising-rightward movement-descending-rising-leftward movement-descending on the surface of the frame 1, continuously conveying the product of the previous station to the next stamping station for processing.

[0033] The surface of the track frame 14 is fixedly connected with a connecting plate 15, one side of the connecting plate 15 is fixedly connected with a fixed plate 16, the top of the connecting plate 15 is slidably connected with a movable plate 26 driven by a first cylinder 27, the inner cavity of the fixed plate 16 is provided with a sliding groove 18, the inner cavity of the sliding groove 18 is slidably connected with a lifting cylinder 22, the bottom of the lifting cylinder 22 is connected with a suction cup 23 connected with the negative pressure mechanism, the top of the lifting cylinder 22 is fixedly connected with a guide rod, one end of the guide rod passes through the movable plate 26 and extends to the top of the movable plate 26, the inner cavity of the movable plate 26 is provided with a suction cup 23 connected with the negative pressure mechanism, and the suction cup 23 connected with the negative pressure mechanism is connected with the guide rod. The guide groove 25 is movably connected to the surface of the rod, the top of the lifting cylinder 22 is fixedly connected to the pressure sensor 28, the surface of the guide rod is sleeved with a reset spring 24, the two ends of the reset spring 24 are respectively fixedly connected to the movable plate 26 and one side of the pressure sensor 28, the inner cavity of the sliding groove 18 is rotatably connected to the ball 17 that is rollingly connected to the surface of the lifting cylinder 22, the inner cavity of the fixed plate 16 is slidably connected to the pressing plate 21 through the embedded groove 20, the pressing plate 21 is located in the middle section of the sliding groove 18, the embedded groove 20 is connected to the sliding groove 18, and the pressing plate 21 is fixed to the fixed plate 1 6 is driven by the second cylinder 19 in the inner cavity. When different workpieces need to be processed during use, the position of the suction cup 23 needs to be adjusted each time. At this time, the workpiece is placed at the bottom, and then the track frame 14 is driven to move downward, driving the connecting plate 15, the fixed plate 16 and the movable plate 26 to move downward. At this time, the suction cup 23 abuts against different points of the workpiece below, and the suction cup 23 is squeezed, pushing the lifting cylinder 22 to move upward in the sliding groove 18. At this time, the reset spring 24 is squeezed upward by the pressure sensor 28, and then the track frame 14 descends to the fixed point until All the pressure sensors 28 detect the extrusion data. At this time, the second cylinder 19 is started to drive the pressure plate 21 to move from the embedded groove 20 to the sliding groove 18, abutting against the side of the lifting cylinder 22 to limit the lifting cylinder 22. All the suction cups 23 can be positioned at one time so that they can adapt to the uneven surface of the workpiece and can be adjusted quickly without manual calibration one by one. Then, the first cylinder 27 is started to drive the movable plate 26 to rise upward to relieve the pressure on the reset spring 24 to prevent it from being under pressure for a long time and affecting the deformation effect.

[0034] A plurality of lifting cylinders 22 are provided and are evenly arranged in the inner cavity of the fixing plate 16 .

[0035] The present invention also discloses a stamping method applied to a stamping die for an automobile chassis component, comprising the following steps:

[0036] Step 1, place the workpiece at the bottom, then drive the track frame 14 to move downward, drive the connecting plate 15, the fixed plate 16 and the movable plate 26 to move downward, at this time, the suction cup 23 abuts against different points of the workpiece below, the suction cup 23 is squeezed, and the lifting cylinder 22 moves upward in the sliding groove 18, at this time, the pressure sensor 28 squeezes the reset spring 24 to move upward, and then the track frame 14 drops to the fixed point until all the pressure sensors 28 detect the extrusion data, at this time, start the second cylinder 19 to drive the pressure plate 21 to move from the embedded groove 20 to the sliding groove 18, abut against the side of the lifting cylinder 22, limit the lifting cylinder 22, and position all the suction cups 23 at one time, so that they can adapt to the uneven surface of the workpiece, and can be adjusted quickly without manual proofreading one by one, and then start the first cylinder 27 at this time to drive the movable plate 26 to rise upward, and relieve the pressure on the reset spring 24;

[0037] Step 2: The workpiece is conveyed step by step to different upper movable dies 2 and lower die bases 5 by a conveying mechanism for stamping step by step;

[0038] Step 3, the upper movable mold 2 descends for stamping. After the stamping is completed, the upper movable mold 2 rises and resets, hitting the spring airbag 11. The spring airbag 11 moves upward and contracts while squeezing the motion compensation spring 12. At this time, the gas in the spring airbag 11 enters the pneumatic piston rod 8 through the ventilation pipe 13, driving the top block 9 at the top of the pneumatic piston rod 8 to lift the workpiece for demoulding, and adsorbs and positions the workpiece through its own magnetic material. At this time, the motion compensation spring 12 is contracted and depressurized, and the spring airbag 11 squeezes the motion compensation spring 12 upward to relax, and then the gas inside the pneumatic piston rod 8 is extracted. At this time, the top block 9 descends and retracts into the ejection groove 10, and drives the workpiece to move downward through magnetic adsorption, and then falls on the surface of the lower die seat 5. It is automatically ejected by its own movement during demoulding, and can be automatically reset after ejection is completed. In addition, magnetic adsorption can prevent the ejection force from causing the workpiece positioning to deviate, affecting subsequent processing movements, and can discharge materials without jamming, and does not affect positioning accuracy.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A stamping die for automobile chassis components, comprising a frame (1), an upper movable die (2) driven by a hydraulic mechanism above the frame (1), and a fixing seat (3) fixed on the surface of the frame (1), wherein a conveying mechanism for conveying a workpiece is provided on the surface of the frame (1), and characterized in that: The top of the fixed seat (3) is movably connected to the lower die seat (5); the inner cavity of the fixed seat (3) is slidably connected to a positioning rod (7) driven by a hydraulic cylinder; the inner cavity of the lower die seat (5) is provided with a positioning groove (6) engaged with the surface of the positioning rod (7); the inner cavity of the fixed seat (3) is fixedly connected to a pneumatic piston rod (8); one end of the pneumatic piston rod (8) is fixedly connected to a top block (9); one end of the top block (9) penetrates and extends to the inner cavity of the lower die seat (5); the lower die seat ( The inner cavity of the upper movable mold (5) is provided with an ejection groove (10) which is slidably connected to the surface of the ejector block (9), the surface of the upper movable mold (2) is fixedly connected to the push plate (4), the surface of the frame (1) is fixedly connected to the motion compensation spring (12), the bottom end of the motion compensation spring (12) is fixedly connected to a spring airbag (11) located above the push plate (4), one end of the spring airbag (11) is connected to the inner cavity of the pneumatic piston rod (8) through a ventilation pipe (13), and the top of the ejector block (9) is made of magnetic material.

2. The stamping die for automobile chassis components according to claim 1, characterized in that: The pneumatic piston rod (8) and the spring airbag (11) are both provided in pairs, and are arranged symmetrically in pairs.

3. The stamping die for automobile chassis components according to claim 1, characterized in that: When the push plate (4) is raised to the uppermost position, the spring airbag (11) contacts the push plate (4).

4. The stamping die for automobile chassis components according to claim 1, characterized in that: The bottom of the lower die seat (5) is provided with a boss, and the inner cavity of the fixing seat (3) is provided with a groove matched with the boss.

5. The stamping die for automobile chassis components according to claim 1, characterized in that: The bottom boss of the lower die seat (5) is sleeved with a buffer ring on the periphery thereof and abuts against the inner cavity groove of the fixing seat (3).

6. The stamping die for automobile chassis components according to claim 1, characterized in that: The conveying mechanism comprises a track frame (14) driven by a driving mechanism to perform reciprocating motion on the surface of a frame (1), wherein the track frame (14) performs a reciprocating motion of rising-moving right-descending-rising-moving left-descending on the surface of the frame (1).

7. The stamping die for automobile chassis components according to claim 1, characterized in that: The surface of the track frame (14) is fixedly connected with a connecting plate (15), one side of the connecting plate (15) is fixedly connected with a fixed plate (16), the top of the connecting plate (15) is slidably connected with a movable plate (26) driven by a first cylinder (27), the inner cavity of the fixed plate (16) is provided with a sliding groove (18), the inner cavity of the sliding groove (18) is slidably connected with a lifting cylinder (22), the bottom of the lifting cylinder (22) is connected with a suction cup (23) connected with a negative pressure mechanism, the top of the lifting cylinder (22) is fixedly connected with a guide rod, one end of the guide rod passes through the movable plate (26) and extends to the top of the movable plate (26), the inner cavity of the movable plate (26) is provided with a surface movable connection with the guide rod The guide groove (25) of the lifting cylinder (22) is fixedly connected to the top end thereof with a pressure sensor (28). The surface of the guide rod is sleeved with a reset spring (24). The two ends of the reset spring (24) are respectively fixedly connected to the movable plate (26) and one side of the pressure sensor (28). The inner cavity of the sliding groove (18) is rotatably connected to a ball (17) that is rollingly connected to the surface of the lifting cylinder (22). The inner cavity of the fixed plate (16) is slidably connected to a pressure plate (21) through an embedded groove (20). The pressure plate (21) is located in the middle section of the sliding groove (18). The embedded groove (20) is connected to the sliding groove (18). The pressure plate (21) is driven by a second cylinder (19) fixed to the inner cavity of the fixed plate (16).

8. The stamping die for automobile chassis components according to claim 7, characterized in that: A plurality of lifting cylinders (22) are provided and are evenly arranged in the inner cavity of the fixed plate (16).

9. A stamping method for a stamping die for a chassis component of an automobile, characterized in that: The following steps are involved: Step 1, place the workpiece at the bottom, then drive the track frame (14) to move downward, drive the connecting plate (15), the fixed plate (16) and the movable plate (26) to move downward, at this time, the suction cup (23) abuts against different points of the workpiece below, the suction cup (23) is squeezed, and the lifting cylinder (22) moves upward in the sliding groove (18), at this time, the pressure sensor (28) squeezes the reset spring (24) to move upward, and then the track frame (14) descends to the fixed point until all the pressure sensors (28) detect the squeezing data, at this time, start the second cylinder (19) to drive the pressure plate (21) to move from the embedded groove (20) to the sliding groove (18), abut against the side of the lifting cylinder (22), limit the lifting cylinder (22), start the first cylinder (27) to drive the movable plate (26) to rise upward, and relieve the pressure of the reset spring (24); Step 2: The workpiece is conveyed step by step by a conveying mechanism to different upper movable dies (2) and lower die seats (5) for stamping step by step; Step 3, the upper movable die (2) descends to perform stamping. After the stamping is completed, the upper movable die (2) rises and resets, hitting the spring airbag (11). The spring airbag (11) moves upward and contracts while squeezing the motion compensation spring (12). At this time, the gas in the spring airbag (11) enters the pneumatic piston rod (8) through the ventilation pipe (13), driving the top block (9) at the top of the pneumatic piston rod (8) to lift the workpiece for demoulding, and adsorbs and positions the workpiece through its own magnetic material. At this time, the motion compensation spring (12) is contracted and pressure is released. The spring airbag (11) squeezes the motion compensation spring (12) upward to relax, and then the gas inside the pneumatic piston rod (8) is extracted. At this time, the top block (9) descends and retracts into the ejection groove (10), and drives the workpiece to move downward through magnetic adsorption, and then falls on the surface of the lower die base (5).

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