A metal sheet punching device and a method of using the same
By using a servo motor-driven lifting plate system and a limit buffer mechanism, the problems of poor stamping effect and inconvenient material handling in existing stamping devices have been solved, realizing efficient metal sheet stamping and convenient material handling, thus improving stamping quality and work efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FOSHAN ARMADA MASCH TECH CO LTD
- Filing Date
- 2023-04-19
- Publication Date
- 2026-07-14
AI Technical Summary
Existing stamping equipment has poor stamping effect, severe die wear, easy damage to blanks, and inconvenient material handling, which affects product quality and work efficiency.
The lifting plate system driven by a servo motor, combined with limit buffer and top material mechanism, achieves precise movement and buffering effect of the stamping block, and the formed thin plate can be easily removed through the top material mechanism.
It improves stamping effect, reduces die wear, protects blanks, simplifies the material handling process, and increases work efficiency.
Smart Images
Figure CN116550839B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of stamping equipment technology, and in particular to a stamping equipment for thin metal sheets and its method of use. Background Technology
[0002] The outer shells of various cabinets are all made of bent and spliced thin metal sheets. During the production of these sheets, a stamping device is used for forming. However, the existing stamping device has poor stamping efficiency, and the stamping blocks are prone to wear after prolonged stamping, resulting in high costs when replacing the entire mold. Furthermore, excessive impact during the stamping process can easily damage the blank, affecting the quality of subsequent products. Additionally, the current stamping device does not allow for easy removal of the sheet metal after stamping, thus requiring further improvement. Summary of the Invention
[0003] The purpose of this invention is to overcome the shortcomings of existing technologies by providing a stamping device for thin metal sheets. Its advantages include good stamping effect, improved stamping quality of thin sheets, convenient material handling, and increased work efficiency.
[0004] To achieve the above objectives, the invention adopts the following technical solution:
[0005] A stamping device for thin metal sheets includes a base, a gantry frame at the top of the base, and two lead screws connected to the outer wall of the gantry frame and the opposite side of the base via bearings. A servo motor is mounted on the top outer wall of the gantry frame, and the output shaft of the servo motor is connected to one of the lead screws. Sliding plates are sleeved on the outer walls of both lead screws. A common lifting plate is mounted on the outer wall of the two sliding plates on the opposite side. A protective mechanism is mounted on the top of the lifting plate. A drive motor is mounted on the bottom end of the lifting plate, and a rotating disk is sleeved on the output shaft of the drive motor. A connecting rod is hinged to the outer edge of the rotating disk, and a stamping block is hinged to the bottom end of the connecting rod. A stamping plate is mounted on the bottom of the stamping block. Limiting buffer mechanisms are mounted on both outer walls of the stamping block. A stamping die is mounted in the middle of the top outer wall of the base. A cavity is formed inside the base, and an ejector mechanism is mounted on the inner wall of the cavity. The top end of the ejector mechanism extends into the stamping die.
[0006] The above technical solution works as follows: During use, the blank to be stamped is placed inside the stamping die. The servo motor is controlled to drive the lead screw to rotate, which in turn moves the lifting plate up and down. When the lifting plate reaches a suitable distance, the drive motor is controlled to drive the rotating disk to rotate. Driven by the connecting rod, the rotating disk moves the stamping block up and down within the stamping die to stamp the blank. During the up-and-down movement of the stamping block, the limiting and buffering mechanism provides good limiting and buffering effects, ensuring the stamping block smoothly enters the stamping die while also providing cushioning. After the blank is stamped, the ejector mechanism ejects the formed sheet from the stamping die, thus completing the stamping of the sheet. This results in good stamping quality, improves the stamping quality of the sheet, facilitates material removal, and increases work efficiency.
[0007] The invention is further configured such that the protective mechanism includes a fixed frame fixed to the top and bottom of the gantry frame, and an adjusting block is slidably connected to the inner wall of the fixed frame. A buffer groove is provided at the bottom of the adjusting block, and a plurality of buffer springs are provided at equal intervals on the inner wall of the buffer groove. A buffer block is provided at the bottom of the buffer springs, and the bottom of the buffer block is fixedly connected to the top of the lifting plate. Locking components are provided on both outer walls of the fixed frame, and a plurality of limiting grooves are provided on both outer walls of the adjusting block. The locking components are adapted to the limiting grooves.
[0008] Through the above technical solution: when the lifting plate is adjusted to a suitable height, the locking component is released, and the locking component can be inserted into the corresponding limit groove to limit the adjustment block. During the stamping, the lifting plate will be subjected to an upward reaction force, causing the buffer block to slide in the buffer groove. At this time, the buffer spring can play a good buffering effect, which can reduce the damage to the lifting plate and sliding plate caused by the reaction force.
[0009] The invention is further configured such that the locking component includes a mounting cavity opened inside the fixed frame, and a connecting spring is provided on the inner wall of the mounting cavity. A limiting rod is inserted into the inner wall of the connecting spring. A pull plate is provided at one end of the limiting rod, and the other end of the limiting rod is designed in the shape of a frustum.
[0010] With the above technical solution: when adjusting the height of the lifting plate, simply pull the plate by hand. After the height adjustment is completed, release the plate, and the end of the limit rod, which is designed in the shape of a frustum, will be inserted into the corresponding limit groove for fixation.
[0011] The present invention is further configured such that the stamping plate has a U-shaped structure, and the stamping plate is connected to the stamping block by fastening bolts. The bottom outer wall of the stamping block is provided with an embedding groove, and the top of the stamping plate is provided with an embedding block, which is adapted to the embedding groove.
[0012] Through the above technical solutions: during the stamping process, the stamping block will be worn. The stamping plate can reduce the wear on the surface of the stamping block. When the stamping plate is worn, it can be disassembled and replaced, which improves the convenience of workers' operation. When installing the stamping plate, the embedded block can be inserted into the embedded groove, which improves the accuracy of the stamping plate installation.
[0013] The present invention is further configured such that the limiting buffer mechanism includes shock-absorbing grooves formed at the four corners of the outer wall of the top of the stamping die, and a piston is slidably connected to the inner wall of the shock-absorbing groove. A limiting rod is provided at the top of the piston, and a shock-absorbing spring is sleeved on the outer wall of the limiting rod. A limiting plate is slidably connected to the outer wall of the limiting rod above the shock-absorbing spring, and the limiting plate is fixed to the outer wall of the stamping block.
[0014] Through the above technical solution: during stamping, the stamping block will move up and down along the limit rod under the action of the limit plate, thereby playing a good guiding role and improving the accuracy of stamping. At the same time, the shock-absorbing spring can play a good buffering role, avoiding the situation of the blank being damaged due to excessive stamping force.
[0015] The present invention is further configured such that a baffle is sleeved on the outer wall of the limiting rod located between the shock-absorbing spring and the limiting plate.
[0016] Through the above technical solution, when the baffle contacts the surface of the stamping die, it means that the stamping block has completely entered the stamping die, which can reduce the wear caused by the further downward movement of the stamping block and the inside of the stamping die, and improve the service life of the stamping block and the stamping die.
[0017] The present invention is further configured such that the material feeding mechanism includes a jacking rod slidably connected in the cavity, and a jacking block is provided at the top end of the jacking rod. A rack is provided on one side of the outer wall of the jacking rod. A rocker arm is connected to the outer wall of the base through a bearing. A gear is provided at one end of the rocker arm, and the gear meshes with the rack.
[0018] The above technical solution allows for the following: When picking up materials, the rocker arm is turned by hand, which drives the gear to rotate. The gear then drives the ejector rod to move upward, and the ejector block pushes the finished product out of the stamping die. When the rocker arm is not turned, the bottom end of the ejector rod is pressed against the bottom inner wall of the cavity, which can prevent damage to the gear during stamping.
[0019] The invention is further configured such that a handle is sleeved on the outer wall of the rocker arm, and an anti-slip strip is provided on the outer wall of the handle.
[0020] Through the above technical solutions, the crank handle with anti-slip strips can increase the friction between the palm and the crank, preventing the hand from slipping when cranking.
[0021] The present invention is further configured such that the limiting rod has a T-shaped structure, and the wider end of the limiting rod faces the lifting plate.
[0022] Through the above technical solutions, the T-shaped limiting rod can effectively limit the limiting plate and prevent the limiting plate from sliding out of the limiting rod.
[0023] A method of using a stamping apparatus for thin metal sheets includes the following steps:
[0024] S1: Place the blank to be stamped into the stamping die, control the servo motor to drive the lead screw to rotate, the lead screw rotation can drive the lifting plate to move up and down. When the lifting plate moves to a suitable distance, control the drive motor to drive the rotating disk to rotate. When the rotating disk rotates, under the drive of the connecting rod, it can drive the stamping block to move up and down in the stamping die to stamp the blank.
[0025] S2: When the stamping block moves up and down, the limiting and buffering mechanism can play a good limiting and buffering role, ensuring that the stamping block enters the stamping die smoothly on the one hand, and buffering on the other hand.
[0026] S3: After the blank is stamped, the ejector mechanism can be controlled to eject the formed sheet from the stamping die, thereby completing the stamping of the sheet.
[0027] The beneficial effects of this invention are as follows:
[0028] 1. This metal sheet stamping device places the blank to be stamped into the stamping die, controls the servo motor to drive the lead screw to rotate, and the rotation of the lead screw can drive the lifting plate to move up and down. When the lifting plate moves to a suitable distance, the drive motor drives the rotating disk to rotate. When the rotating disk rotates, under the drive of the connecting rod, it can drive the stamping block to move up and down in the stamping die to stamp the blank. When the stamping block moves up and down, the limiting and buffering mechanism can play a good limiting and buffering role. On the one hand, it ensures that the stamping block enters the stamping die smoothly, and on the other hand, it can buffer. After the blank is stamped, the ejector mechanism can eject the formed sheet from the stamping die, thereby completing the stamping of the sheet. The stamping effect is good, the stamping quality of the sheet is improved, and the material is easy to remove, increasing work efficiency.
[0029] 2. In the stamping device for the metal sheet, after the lifting plate is adjusted to a suitable height, the locking component is released and can be inserted into the corresponding limit groove to limit the adjustment block. During stamping, the lifting plate will be subjected to an upward reaction force, causing the buffer block to slide in the buffer groove. At this time, the buffer spring can play a good buffering effect, which can reduce the damage to the lifting plate and sliding plate caused by the reaction force.
[0030] 3. In the stamping device for this sheet metal, when taking material, the rocker arm is turned by hand. The rocker arm drives the gear to rotate, and the gear drives the ejector rod to move upward. The ejector block pushes the finished product out of the stamping die. When the rocker arm is not turned, the bottom end of the ejector rod just abuts against the bottom inner wall of the cavity, which can avoid damage to the gear during stamping. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the overall structure of a metal sheet stamping device proposed in this invention;
[0032] Figure 2 This is a schematic diagram of the jacking rod structure of a stamping device for metal sheets proposed in this invention;
[0033] Figure 3 for Figure 1 Enlarged structural diagram at point A;
[0034] Figure 4 for Figure 1 Enlarged structural diagram at point B;
[0035] Figure 5 for Figure 1 A magnified structural diagram at point C.
[0036] In the diagram: 1. Gear; 2. Stamping plate; 3. Push rod; 4. Embedded block; 5. Stamping die; 6. Limiting plate; 7. Rotating disk; 8. Drive motor; 9. Sliding plate; 10. Servo motor; 11. Adjusting block; 12. Buffer spring; 13. Fixed frame; 14. Buffer block; 15. Lifting plate; 16. Gantry frame; 17. Connecting rod; 18. Lead screw; 19. Stamping block; 20. Base; 21. Handle; 22. Rack; 23. Pushing block; 24. Limiting rod; 25. Shock-absorbing spring; 26. Shock-absorbing groove; 27. Piston; 28. Baffle; 29. Fastening bolt; 30. Mounting cavity; 31. Pull plate; 32. Limiting groove; 33. Limiting insert rod; 34. Connecting spring; 35. Rocker arm. Detailed Implementation
[0037] The technical solution of this patent will be further described in detail below with reference to specific embodiments.
[0038] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.
[0039] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.
[0040] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.
[0041] Reference Figure 1-5 A stamping device for thin metal sheets includes a base 20, a gantry frame 16 on the top of the base 20, and two lead screws 18 connected to the outer wall of the gantry frame 16 on the opposite side of the base 20 via bearings. The two lead screws 18 rotate synchronously through a linkage mechanism. A servo motor 10 is installed on the top outer wall of the gantry frame 16, and the output shaft of the servo motor 10 is connected to one of the lead screws 18. Sliding plates 9 are sleeved on the outer walls of both lead screws 18. A common lifting plate 15 is installed on the outer wall of the two sliding plates 9 on the opposite side. The top of the lifting plate 15... The base is equipped with a protective mechanism. The bottom end of the lifting plate 15 is equipped with a drive motor 8, and the output shaft of the drive motor 8 is sleeved with a rotating disk 7. A connecting rod 17 is hinged to the outer edge of the rotating disk 7. A stamping block 19 is hinged to the bottom end of the connecting rod 17. A stamping plate 2 is provided at the bottom of the stamping block 19. Limiting buffer mechanisms are provided on both sides of the outer wall of the stamping block 19. A stamping die 5 is provided in the middle of the top outer wall of the base 20. A cavity is opened inside the base 20. An ejector mechanism is provided on the inner wall of the cavity. The top of the ejector mechanism extends into the stamping die 5.
[0042] Specifically, the protective mechanism includes a fixed frame 13 fixed to the top and bottom of the gantry frame 16, with an adjusting block 11 slidably connected to the inner wall of the fixed frame 13. A buffer groove is provided at the bottom of the adjusting block 11, and several equally spaced buffer springs 12 are provided on the inner wall of the buffer groove. A buffer block 14 is provided at the bottom of each buffer spring 12, and the bottom of the buffer block 14 is fixedly connected to the top of the lifting plate 15. Locking components are provided on both outer walls of the fixed frame 13, and several equally spaced limiting grooves 32 are provided on both outer walls of the adjusting block 11. The locking components are adapted to the limiting grooves 32. When the lifting plate 15 is adjusted to a suitable height, the locking components are released, allowing them to insert into the corresponding limiting grooves 32 to limit the adjusting block 11. During stamping, the lifting plate 15 experiences an upward reaction force, causing the buffer block 14 to slide within the buffer groove. At this time, the buffer springs 12 provide a good buffering effect, reducing the risk of damage to the lifting plate 15 and the sliding plate 9 caused by the reaction force.
[0043] Specifically, the locking component includes a mounting cavity 30 inside the fixed frame 13, and a connecting spring 34 is provided on the inner wall of the mounting cavity 30. A limiting rod 33 is inserted into the inner wall of the connecting spring 34. One end of the limiting rod 33 is provided with a pull plate 31, and the other end of the limiting rod 33 is designed in the shape of a frustum. When adjusting the height of the lifting plate 15, the pull plate 31 can be pulled by hand. After the height adjustment is completed, the pull plate 31 is released, and the frustum-shaped end of the limiting rod 33 will be inserted into the corresponding limiting groove 32 for fixation.
[0044] Specifically, the stamping plate 2 has a U-shaped structure and is connected to the stamping block 19 by fastening bolts 29. The bottom outer wall of the stamping block 19 has an embedding groove, and the top of the stamping plate 2 has an embedding block 4 that fits into the embedding groove. During the stamping process, the stamping block 19 will be worn. The stamping plate 2 can reduce the wear on the surface of the stamping block 19. When the stamping plate 2 is worn, it can be disassembled and replaced, improving the convenience of worker operation. When installing the stamping plate 2, the embedding block 4 can be inserted into the embedding groove, improving the accuracy of the stamping plate 2 installation.
[0045] Specifically, the limiting and buffering mechanism includes damping grooves 26 located at the four corners of the top outer wall of the stamping die 5. A piston 27 is slidably connected to the inner wall of the damping grooves 26. A limiting rod 24 is installed at the top of the piston 27. A damping spring 25 is sleeved on the outer wall of the limiting rod 24. A limiting plate 6 is slidably connected to the outer wall of the limiting rod 24 above the damping spring 25. The limiting plate 6 is fixed to the outer wall of the stamping block 19. During stamping, the stamping block 19 moves up and down along the limiting rod 24 under the action of the limiting plate 6, thus providing good guidance and improving the accuracy of stamping. At the same time, the damping spring 25 provides good buffering, preventing damage to the blank due to excessive stamping force.
[0046] Specifically, a baffle 28 is sleeved on the outer wall of the limiting rod 24 between the shock-absorbing spring 25 and the limiting plate 6. When the baffle 28 contacts the surface of the stamping die 5, it means that the stamping block 19 has completely entered the stamping die 5, which can reduce the wear caused by the further downward movement of the stamping block 19 and the interior of the stamping die 5, and improve the service life of the stamping block 19 and the stamping die 5.
[0047] Specifically, the ejector mechanism includes an ejector rod 3 slidably connected within the cavity, with an ejector block 23 at the top of the ejector rod 3. A rack 22 is provided on one outer wall of the ejector rod 3. A rocker arm 35 is connected to the outer wall of the base 20 via a bearing. A gear 1 is provided at one end of the rocker arm 35, and the gear 1 meshes with the rack 22. During material removal, the rocker arm 35 is manually rotated, causing the gear 1 to rotate. The gear 1 then moves the ejector rod 3 upward, and the ejector block 23 pushes the finished product out of the stamping die 5. When the rocker arm 35 is not rotated, the bottom end of the ejector rod 3 rests against the bottom inner wall of the cavity, preventing damage to the gear 1 during stamping.
[0048] Specifically, a crank handle 21 is sleeved on the outer wall of the rocker arm 35, and the outer wall of the crank handle 21 is provided with anti-slip strips. The crank handle 21 with anti-slip strips can increase the friction between the palm and the rocker arm 35, preventing the hand from slipping when cranking.
[0049] Specifically, the limiting rod 24 has a T-shaped structure, with the wider end of the limiting rod 24 facing the lifting plate 15. The T-shaped limiting rod 24 can effectively limit the limiting plate 6, preventing the limiting plate 6 from sliding out of the limiting rod 24.
[0050] A method of using a stamping apparatus for thin metal sheets includes the following steps:
[0051] S1: Place the blank to be stamped into the stamping die 5, control the servo motor 10 to drive the lead screw 18 to rotate, the lead screw 18 can drive the lifting plate 15 to move up and down. When the lifting plate 15 moves to a suitable distance, control the drive motor 8 to drive the rotating disk 7 to rotate. When the rotating disk 7 rotates, under the drive of the connecting rod 17, it can drive the stamping block 19 to move up and down in the stamping die 5 to stamp the blank.
[0052] S2: When the stamping block 19 moves up and down, the limiting and buffering mechanism can play a good limiting and buffering role. On the one hand, it ensures that the stamping block 19 can smoothly enter the stamping die 5, and on the other hand, it can buffer.
[0053] S3: After the blank is stamped, the ejector mechanism is controlled to eject the formed sheet from the stamping die 5, thereby completing the stamping of the sheet.
[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A stamping device for thin metal sheets, comprising a base (20), characterized in that, A gantry frame (16) is provided on the top of the base (20), and two lead screws (18) are connected to the outer wall of the gantry frame (16) and the base (20) on opposite sides via bearings. The two lead screws (18) rotate synchronously through a linkage mechanism. A servo motor (10) is provided on the top outer wall of the gantry frame (16), and the output shaft of the servo motor (10) is connected to one of the lead screws (18). Sliding plates (9) are sleeved on the outer walls of both lead screws (18), and the same lifting plate (15) is provided on the outer wall of the two sliding plates (9) on opposite sides. A protective mechanism is provided on the top of the lifting plate (15). A drive motor (8) is provided at the bottom of the plate (15), and a rotating disk (7) is sleeved on the output shaft of the drive motor (8). A connecting rod (17) is hinged at the outer edge of the rotating disk (7). A stamping block (19) is hinged at the bottom of the connecting rod (17). A stamping plate (2) is provided at the bottom of the stamping block (19). Limiting buffer mechanisms are provided on both sides of the outer wall of the stamping block (19). A stamping die (5) is provided in the middle of the top outer wall of the base (20). A cavity is opened inside the base (20). A material ejection mechanism is provided on the inner wall of the cavity. The top of the material ejection mechanism extends into the stamping die (5). The protective mechanism includes a fixed frame (13) fixed to the top and bottom of the gantry (16), and an adjusting block (11) is slidably connected to the inner wall of the fixed frame (13). The bottom of the adjusting block (11) is provided with a buffer groove. The inner wall of the buffer groove is provided with several buffer springs (12) distributed at equal distances. The bottom of the buffer springs (12) is provided with a buffer block (14). The bottom of the buffer block (14) is fixedly connected to the top of the lifting plate (15). Locking components are provided on both outer walls of the fixed frame (13). Several limiting grooves (32) are distributed at equal distances on both outer walls of the adjusting block (11). The locking components are adapted to the limiting grooves (32). The stamping plate (2) has a U-shaped structure and is connected to the stamping block (19) by fastening bolts (29). The bottom outer wall of the stamping block (19) is provided with an embedding groove, and the top of the stamping plate (2) is provided with an embedding block (4). The embedding block (4) is adapted to the embedding groove.
2. The stamping apparatus for a thin metal sheet according to claim 1, characterized in that, The locking component includes an installation cavity (30) opened inside the fixed frame (13), and a connecting spring (34) is provided on the inner wall of the installation cavity (30). A limiting rod (33) is inserted into the inner wall of the connecting spring (34). A pull plate (31) is provided at one end of the limiting rod (33), and the other end of the limiting rod (33) is designed in the shape of a frustum.
3. The stamping apparatus for a thin metal sheet according to claim 1, characterized in that, The limiting buffer mechanism includes shock-absorbing grooves (26) opened at the four corners of the top outer wall of the stamping die (5), and a piston (27) is slidably connected to the inner wall of the shock-absorbing groove (26). A limiting rod (24) is provided on the top of the piston (27). A shock-absorbing spring (25) is sleeved on the outer wall of the limiting rod (24). A limiting plate (6) is slidably connected to the outer wall of the limiting rod (24) above the shock-absorbing spring (25). The limiting plate (6) is fixed on the outer wall of the stamping block (19).
4. The stamping apparatus for a thin metal sheet according to claim 3, characterized in that, The limiting rod (24) is fitted with a baffle (28) on its outer wall between the shock-absorbing spring (25) and the limiting plate (6).
5. The stamping apparatus for a thin metal sheet according to claim 1, characterized in that, The material feeding mechanism includes a jacking rod (3) slidably connected in the cavity, and a jacking block (23) is provided at the top of the jacking rod (3). A rack (22) is provided on one side of the outer wall of the jacking rod (3). A rocker arm (35) is connected to the outer wall of the base (20) through a bearing. A gear (1) is provided at one end of the rocker arm (35). The gear (1) meshes with the rack (22).
6. The stamping apparatus for a thin metal sheet according to claim 5, characterized in that, The rocker arm (35) is fitted with a handle (21) on its outer wall, and the handle (21) is provided with an anti-slip strip on its outer wall.
7. The stamping apparatus for a thin metal sheet according to claim 3, characterized in that, The limiting rod (24) has a T-shaped structure, and the wider end of the limiting rod (24) faces the lifting plate (15).
8. A method of using the stamping apparatus for metal sheets as described in claim 1, characterized in that, Includes the following steps: S1: Place the blank to be stamped into the stamping die (5), control the servo motor (10) to drive the lead screw (18) to rotate. The rotation of the lead screw (18) can drive the lifting plate (15) to move up and down. When the lifting plate (15) moves to a suitable distance, control the drive motor (8) to drive the rotating disk (7) to rotate. When the rotating disk (7) rotates, under the drive of the connecting rod (17), it can drive the stamping block (19) to move up and down in the stamping die (5) to stamp the blank. S2: When the stamping block (19) moves up and down, the limiting and buffering mechanism can play a good limiting and buffering role. On the one hand, it ensures that the stamping block (19) enters the stamping die (5) smoothly, and on the other hand, it can buffer. S3: After the blank is stamped, the ejector mechanism is controlled to eject the formed sheet from the stamping die (5), thereby completing the stamping of the sheet.