Die pressing equipment with auxiliary edge pressing mechanism for solid circular metal sheet

Abstract

The invention relates to the technical field of fastener machining, in particular to die pressing equipment with an auxiliary edge pressing mechanism for a solid circular metal sheet, which comprises a bearing table, a vertical plate is arranged on one side of the bearing table, a bearing plate is fixedly connected to the top end of the vertical plate, and a stamping cylinder is arranged on the upper end face of the bearing plate. A piston rod of the stamping air cylinder penetrates through the bearing plate to be connected with a stamping block, the lower end face of the stamping block is fixedly connected with an upper male die used for stamping a cover body, the bearing table is connected with a lower female die, the lower female die is provided with a containing groove used for containing the cover body, a plurality of pressing plates are arranged on the peripheral side of the cover body, and rotating shafts are fixedly connected to the pressing plates. And a driving mechanism for synchronously driving the rotating shaft to rotate is arranged in the bearing table. The cover body is limited through the pressing plate instead of a traditional pressing mode, the positioning mode is changed, damage to the cover body when the cover body is pressed is avoided, and the stability of the stamping process is improved.

Description

Technical Field

[0001] This invention relates to the field of fastener processing technology, and in particular to a pressing die device for solid circular metal sheets with an auxiliary pressing mechanism. Background Technology

[0002] Solid circular metal elastic gaskets are mainly used as stabilizing components in fastening systems. By providing continuous preload, they effectively compensate for thermal expansion and contraction, vibration relaxation, and assembly errors, fundamentally improving the durability and safety of the connection. In actual processing, they need to be stamped using a die-casting machine.

[0003] Related technology can be found in patent application CN119819829A, which discloses a stamping forming device for a cover. The device includes a base, a gantry frame at the upper end of the base, a lifting mechanism on the inner side of the gantry frame, a top of the lifting mechanism fixedly connected to the top of the inner side of the gantry frame, a counterweight frame detachably connected to the telescopic end of the lifting mechanism, an upper mold detachably connected to the bottom of the counterweight frame, and a lower mold located at the upper end of the base and at the lower part of the inner side of the gantry frame. This application provides a stamping forming device for a cover, which, through a multi-structure design, enables the device to perform stamping operations and allows for the disassembly and replacement of the upper and lower molds according to production needs. Furthermore, the cooling mechanism allows for physical cooling of the stamped parts, reducing production time and improving efficiency. The cooling mechanism also allows for unified unloading of the stamped parts after stamping, improving the convenience of material handling.

[0004] Regarding the aforementioned technologies, the stamping process of solid circular metal elastic gaskets typically employs a forming method involving the cooperation of an upper and lower die. The bottom surface of the upper die is equipped with a punch structure for forming, while the top surface of the lower die is equipped with a matching concave die structure. Pressure is applied to the metal blank by the punch, achieving plastic deformation and geometric shaping of the metal sheet. Currently, the stamping process of metal sheets is usually equipped with a clamping device to prevent instability such as localized warping, displacement, or wrinkling of the sheet material by clamping the non-stamping areas. However, fixing the non-stamping areas of the metal sheet with the clamping device may cause unnecessary plastic deformation of the material in the non-stamping areas, thus affecting subsequent processing or the performance of the final product. To solve the above technical problems, there is an urgent need for a stamping device for solid circular metal sheets with an auxiliary edge-pressing mechanism. Summary of the Invention

[0005] To improve product quality in subsequent processing, this invention provides a die-pressing device for solid circular metal sheets with an auxiliary pressing mechanism.

[0006] This invention provides a die-pressing device for solid circular metal sheets with an auxiliary pressing mechanism, employing the following technical solution: A die-pressing device for solid circular metal sheets with an auxiliary pressing mechanism includes a support platform. A vertical plate is provided on one side of the support platform, and a bearing plate is fixedly connected to the top of the vertical plate. The bearing plate is horizontally positioned. A stamping cylinder is provided on the upper surface of the bearing plate. The piston rod of the stamping cylinder passes through the bearing plate and is connected to a stamping block. An upper punch for stamping a cover is fixedly connected to the lower surface of the stamping block. A lower die is connected to the support platform, and a placement groove for placing the cover is provided on the lower die. Several pressure plates are provided around the cover, evenly distributed. A rotating shaft is fixedly connected to the pressure plates. A drive mechanism for synchronously driving the rotating shaft is provided inside the support platform. When the cover is being stamped, the pressure plates are located above the cover; after the cover is stamped and reset, the pressure plates are located on the upper surface of the support platform away from the cover.

[0007] By adopting the above technical solution, when stamping the cover, the operator first places the cover in the placement slot of the lower die, and then starts the stamping cylinder. The stamping cylinder drives the stamping block downward and simultaneously drives the upper punch downward to achieve the stamping process of the cover. During the stamping process, the drive mechanism works synchronously, driving the pressure plate to rotate above the cover, achieving multi-point uniform pressing of the cover edge, effectively limiting its free deformation during the stamping process, avoiding material instability, and improving the forming quality. After the stamping is completed and reset, the pressure plate rotates in the opposite direction and moves out of the working area to one side of the support platform, freeing up operating space for manual or robotic arms to quickly complete the picking and unloading of parts. By limiting the edge of the cover by the pressure plate, the traditional method of pressing the cover edge with a pressure block for fixation is changed, thereby avoiding damage to the cover edge due to stamping during the stamping process and improving production efficiency.

[0008] Optionally, the drive mechanism includes an internal gear ring, the support platform is a hollow cavity, the internal gear ring is rotatably connected to the support platform, a sun gear is provided inside the internal gear ring, the sun gear is located at the center of the internal gear ring, a number of planet gears are provided between the sun gear and the internal gear ring, a planet carrier is provided below the sun gear, the planet carrier is fixedly connected to the support platform, the sun gear and planet gears are rotatably connected to the upper end face of the planet carrier, the planet gears are arranged one-to-one with the rotating shaft, the planet gears are coaxially fixedly connected to the rotating shaft, the sun gear meshes with the planet gears, and the planet gears mesh with the internal gear ring.

[0009] By adopting the above technical solution, when the drive mechanism is working, the internal gear ring rotates, and with the assistance of the sun gear, multiple planetary gears rotate synchronously, thereby ensuring that all pressure plates move in the same direction, have the same angle, and have no phase deviation during opening and closing. This effectively avoids problems such as uneven load or uneven pressure caused by asynchronous pressing. When rotating forward, the pressure plate turns to the top of the cover to achieve pressing; when rotating in reverse, the pressure plate turns away from the working area, making it convenient to pick up and put down materials.

[0010] Optionally, a connecting rod is fixedly connected to the side of the stamping block near the upright plate. A sliding groove is provided on the side of the upright plate near the stamping block, extending along the height direction of the upright plate. A lifting screw is provided inside the upright plate. The end of the connecting rod away from the stamping block is threadedly connected to the lifting screw. The connecting rod is located at the sliding groove of the upright plate and is slidably connected to the upright plate. An external gear ring is fixedly connected to the outer side of the internal gear ring through the side wall of the support platform. The external gear ring is rotatably connected to the support platform. A synchronous pulley is coaxially fixedly connected to the lifting screw. The synchronous pulley meshes with the external gear ring. A connecting rod is provided between the lower die and the sun gear. One end of the connecting rod is fixedly connected to the lower die, and the other end is rotatably connected to the sun gear.

[0011] By adopting the above technical solution, during stamping, the operator starts the stamping cylinder, which drives the stamping block to descend, thereby driving the connecting rod to descend, which in turn causes the lifting screw to rotate, synchronously driving the synchronous wheel to rotate, which in turn drives the external gear ring to rotate, and then drives the internal planetary gear to rotate. This achieves the effect of the pressure plate pressing the cover during stamping. During resetting, the pressure plate releases the cover synchronously. Multiple actuators are controlled by the linkage of gear and thread transmission chain, which significantly improves the automation level, adjustment accuracy and structural integration of the equipment. Furthermore, the stability of the lower die is ensured by setting the connecting rod, realizing functional modularization.

[0012] Optionally, the support platform is provided with an adjusting screw. One end of the adjusting screw passes through the planetary carrier and is fixedly connected to the sun gear on the same axis. The other end is rotatably connected to the inner bottom surface of the support platform. The lower die is provided with several air pressure holes. The support platform is provided with a double-layer piston plate. Limiting blocks are fixedly connected to both sides of the piston plate. A limiting groove is provided on the inner side wall of the support platform. The limiting groove extends along the height direction of the support platform. The limiting block is located at the limiting groove of the support platform. The piston plate is slidably connected to the inner side wall of the support platform.

[0013] By adopting the above technical solution, when stamping is performed, the operator starts the stamping cylinder, which drives the stamping block to descend, thereby driving the connecting rod to descend, which in turn causes the lifting screw to rotate, synchronously driving the synchronous wheel to rotate, which in turn drives the external gear ring to rotate, which in turn drives the internal planetary gear to rotate, and simultaneously drives the sun gear to rotate. The rotation of the sun gear also drives the adjusting screw to rotate, thereby causing the two piston plates to descend. The air pressure is regulated through the gap between the air pressure hole and the cover, so that the cover is firmly attached to the upper surface of the support platform, forming a negative pressure adsorption, which cooperates with the pressure plate, further improving the stability of the stamping process. At the same time, during the return phase, air can be introduced through the air pressure hole to prevent the formation of negative pressure adsorption, which is conducive to the demolding of the workpiece.

[0014] Optionally, an abutment ring is fixedly connected to the upper end face of the support platform to restrict the descent of the upper punch.

[0015] By adopting the above technical solution, an abutment ring is fixedly installed on the upper end face of the bearing platform to limit the downward stroke of the upper punch, thereby accurately controlling the closing height of the upper and lower dies. This structure can effectively prevent the upper punch from going too far downward during the stamping process, avoiding over-pressure deformation, cracking, or die damage to the cover due to excessive extrusion. At the same time, when the pressure plate is in the closed and pressed state, the abutment ring can also share part of the stamping force, reduce the load stress on the pressure plate and its shaft connection structure, play an auxiliary support and protection role, and improve the overall operational safety and structural durability of the equipment.

[0016] Optionally, the number of pressure plates is three, evenly distributed along the perimeter of the cover.

[0017] By adopting the above technical solution, namely using three pressure plates evenly arranged along the perimeter of the cover for fixing, stable clamping of the blank can be achieved, effectively preventing forming defects such as material displacement, wrinkling, or warping during the stamping process. Since three points determine a plane, the three evenly distributed pressure plates can ensure sufficient constraint force while making the clamping force distribution more uniform, reducing local stress concentration, and helping to improve forming accuracy and product consistency.

[0018] Optionally, the pressure plate can be made of a smooth material.

[0019] By adopting the above technical solution, the material damage to the billet caused by repeated friction between the pressure plate and the billet can be avoided, which helps to improve the safety of the device.

[0020] In summary, the present invention has at least one of the following beneficial technical effects: By setting up a support platform, upright plate, support plate, stamping cylinder, stamping block, upper punch, lower die, placement groove, pressure plate, and drive mechanism, when stamping the cover, the operator first places the cover in the placement groove of the lower die, and then starts the stamping cylinder. The stamping cylinder drives the stamping block downward and simultaneously drives the upper punch downward to achieve the stamping process of the cover. During the stamping process, the drive mechanism works synchronously, driving the pressure plate to rotate above the cover, achieving multi-point uniform pressing of the cover edge, effectively limiting its free deformation during the stamping process, avoiding material instability, and improving the forming quality. After the stamping is completed and reset, the pressure plate rotates in the opposite direction, moves out of the working area, and is located on one side of the support platform, freeing up operating space for manual or robotic arms to quickly complete the picking and unloading of parts. By setting an abutment ring, the downward stroke of the upper punch is limited, thereby precisely controlling the closing height of the upper and lower dies. This structure can effectively prevent the upper punch from going too far downward during the stamping process, avoiding over-pressure deformation, cracking, or die damage to the cover due to excessive extrusion. At the same time, when the pressure plate is in the closed and pressed state, the abutment ring can also share part of the stamping force, reduce the load stress on the pressure plate and its shaft connection structure, play an auxiliary support and protection role, and improve the overall operational safety and structural durability of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a die-pressing device for solid circular metal sheets with an auxiliary pressing mechanism.

[0022] Figure 2 This is a cross-sectional structural diagram of a die-pressing device for solid circular metal sheets with an auxiliary pressing mechanism.

[0023] Figure 3 This is a schematic diagram highlighting part of the drive mechanism.

[0024] Figure 4 yes Figure 2 Enlarged view of section A.

[0025] Figure 5 It is an exploded view highlighting the fixed components.

[0026] Figure 6 This is a schematic diagram highlighting the structure of the fixed components.

[0027] Explanation of reference numerals in the attached drawings: 10. Cover body; 1. Support platform; 11. Abutment ring; 2. Stamping assembly; 21. Support plate; 22. Stamping cylinder; 23. Vertical plate; 24. Stamping block; 25. Upper punch; 26. Lower die; 261. Air pressure hole; 27. Placement slot; 3. Fixing assembly; 31. Pressure plate; 32. Rotating shaft; 33. Drive mechanism; 331. Internal gear ring; 332. Planetary gear; 333. Sun gear; 334. Planetary carrier; 335. External gear ring; 34. Connecting rod; 35. Sliding groove; 36. Lifting screw; 37. Synchronous pulley; 38. Connecting rod; 39. Adjusting screw; 391. Piston plate; 392. Limiting block; 393. Limiting groove. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to all the accompanying drawings.

[0029] This invention discloses a pressing device for solid circular metal sheets with an auxiliary pressing mechanism.

[0030] Reference Figures 1-6A die-pressing device for solid circular metal sheets with an auxiliary pressing mechanism includes a support platform 1, a stamping assembly 2, and a fixing assembly 3. A cover 10 is placed on the support platform 1, the stamping assembly 2 is located above the support platform 1, and the fixing assembly 3 is connected to the support platform 1. The stamping assembly 2 stamps the cover 10, and the fixing assembly 3 ensures the stability of the cover 10 during stamping.

[0031] Reference Figures 1-6 The stamping assembly 2 includes a support plate 21 and a stamping cylinder 22. A vertical plate 23 is provided on one side of the support platform 1. The support plate 21 is horizontally set at the top of the vertical plate 23. The support plate 21 and the vertical plate 23 are fixedly connected. The stamping cylinder 22 is located on the upper end face of the support plate 21. The piston rod of the stamping cylinder 22 passes through the support plate 21 and is connected to a stamping block 24. An upper punch 25 for stamping the cover 10 is fixedly connected to the lower end face of the stamping block 24. A lower die 26 is connected to the support platform 1. The lower die 26 is provided with a placement groove 27 for placing the cover 10.

[0032] Reference Figures 1-6 When stamping the cover 10, the operator first places the cover 10 in the placement groove 27 of the lower die 26, and then starts the stamping cylinder 22. The stamping cylinder 22 drives the stamping block 24 to move down and simultaneously drives the upper punch 25 to move down, thereby realizing the stamping process of the cover 10. The placement groove 27 is set to limit the position of the cover 10, which facilitates the stability during stamping.

[0033] Reference Figures 1-6 An abutment ring 11 is fixedly connected to the upper end face of the support platform 1 to limit the descent of the upper punch 25. By fixing the abutment ring 11 to the upper end face of the support platform 1, the downward stroke of the upper punch 25 is limited, thereby precisely controlling the closing height of the upper and lower dies. This structure can effectively prevent the upper punch 25 from going too far downward during the stamping process, avoiding over-pressure deformation, cracking, or die damage to the cover 10 due to excessive extrusion. At the same time, when the pressure plate 31 is in the closed and pressed state, the abutment ring 11 can also share part of the stamping force, reduce the load stress on the pressure plate 31 and its shaft 32 connection structure, play an auxiliary support and protection role, and improve the overall operational safety and structural durability of the equipment.

[0034] Reference Figures 1-6 The fixing component 3 includes three pressure plates 31, which are evenly arranged around the periphery of the cover 10. A rotating shaft 32 is fixedly connected to the pressure plate 31. The support platform 1 is provided with a drive mechanism 33 for synchronously driving the rotating shaft 32 to rotate. When the cover 10 is stamped, the pressure plate 31 is located above the cover 10. After the cover 10 is stamped and reset, the pressure plate 31 is located on the side of the upper end face of the support platform 1 away from the cover 10.

[0035] Reference Figures 1-6During the stamping process, the drive mechanism 33 works synchronously, driving the rotating shaft 32 to rotate, thereby causing the pressure plate 31 to rotate above the cover 10. This achieves multi-point uniform pressing of the edge of the cover 10, effectively limiting its free deformation during the stamping process, avoiding material instability, and improving forming quality. After the stamping is completed and reset, the pressure plate 31 rotates in the opposite direction, moves out of the working area, and is located on one side of the support platform 1, freeing up operating space. This facilitates quick picking and unloading of parts by manual labor or robotic arms. By limiting the edge of the cover through the pressure plate 31, the traditional method of pressing the edge of the cover 10 with a pressure block is changed. This avoids damage to the edge of the cover 10 caused by stamping during the stamping process, which is conducive to improving production efficiency.

[0036] Reference Figures 1-6 The drive mechanism 33 includes an internal gear ring 331, three planetary gears 332, and a sun gear 333. The support platform 1 is a hollow cavity. The internal gear ring 331 is rotatably connected to the support platform 1. The sun gear 333 is located at the center of the internal gear ring 331. The three planetary gears 332 are evenly arranged between the sun gear 333 and the internal gear ring 331. A planet carrier 334 is provided below the sun gear 333. The planet carrier 334 is fixedly connected to the support platform 1. The sun gear 333 meshes with the planetary gears 332, and the planetary gears 332 mesh with the internal gear ring 331. The sun gear 333 and the planetary gears 332 are rotatably connected to the upper end face of the planet carrier 334. The planetary gears 332 are arranged one-to-one with the rotating shafts 32, and the planetary gears 332 and the rotating shafts 32 are coaxially fixedly connected.

[0037] Reference Figures 1-6 When the drive mechanism 33 is working, the internal gear ring 331 rotates, and with the assistance of the sun gear 333, multiple planetary gears 332 rotate synchronously, thereby ensuring that all pressure plates 31 move in the same direction, at the same angle, and without phase deviation during opening and closing. This effectively avoids problems such as uneven load or uneven pressure caused by asynchronous pressing. When rotating forward, the pressure plate 31 turns upward to the cover 10 to achieve pressing; when rotating in reverse, the pressure plate 31 turns away from the working area for easy material handling.

[0038] Reference Figures 1-6A connecting rod 34 is fixedly connected to the side of the stamping block 24 near the upright plate 23. A sliding groove 35 is provided on the side of the upright plate 23 near the stamping block 24. The sliding groove 35 extends along the height direction of the upright plate 23. A lifting screw 36 is provided inside the upright plate 23. The end of the connecting rod 34 away from the stamping block 24 is threadedly connected to the lifting screw 36. The connecting rod 34 is located at the sliding groove 35 of the upright plate 23 and is slidably connected to the upright plate 23. An external gear ring 335 is fixedly connected to the outer side of the internal gear ring 331 through the side wall of the support platform 1. The external gear ring 335 is rotatably connected to the support platform 1. A synchronous wheel 37 is coaxially fixedly connected to the lifting screw 36. The synchronous wheel 37 meshes with the external gear ring 335. A connecting rod 38 is provided between the lower die 26 and the sun gear 333. One end of the connecting rod 38 is fixedly connected to the lower die 26, and the other end is rotatably connected to the sun gear 333.

[0039] Reference Figures 1-6 During stamping, the operator starts the stamping cylinder 22, which drives the stamping block 24 to descend, thereby driving the connecting rod 34 to descend, which in turn causes the lifting screw 36 to rotate, synchronously driving the synchronous wheel 37 to rotate, which in turn drives the external gear ring 335 to rotate, which in turn drives the internal planetary gear 332 to rotate. This achieves the effect of the pressure plate 31 pressing the cover 10 during stamping. During reset, the pressure plate 31 releases the cover 10 synchronously. Multiple actuators are controlled by the linkage of gear and thread transmission chain, which significantly improves the automation level, adjustment accuracy and structural integration of the equipment. Furthermore, the stability of the lower die 26 is ensured by setting the connecting rod 38, realizing functional modularization.

[0040] Reference Figures 1-6 The support platform 1 is provided with an adjusting screw 39. One end of the adjusting screw 39 passes through the planetary carrier 334 and is coaxially fixedly connected to the sun gear 333. The other end is rotatably connected to the inner bottom surface of the support platform 1. The lower die 26 is provided with several air pressure holes 261. The support platform 1 is provided with a double-layer piston plate 391. Limiting blocks 392 are fixedly connected to both sides of the piston plate 391. The inner side wall of the support platform 1 is provided with a limiting groove 393. The limiting groove 393 extends along the height direction of the support platform 1. The limiting block 392 is located at the limiting groove 393 of the support platform 1. The piston plate 391 is slidably connected to the inner side wall of the support platform 1.

[0041] Reference Figures 1-6When stamping is performed, the operator starts the stamping cylinder 22, which drives the stamping block 24 to descend, thereby driving the connecting rod 34 to descend, which in turn causes the lifting screw 36 to rotate, synchronously driving the synchronous wheel 37 to rotate, which in turn drives the external gear ring 335 to rotate, which in turn drives the internal planetary gear 332 to rotate, and simultaneously drives the sun gear 333 to rotate. The rotation of the sun gear 333 also drives the adjusting screw 39 to rotate, thereby causing the two piston plates 391 to descend. The air pressure is regulated through the gap between the air pressure hole 261 and the cover 10, so that the cover 10 is firmly attached to the upper surface of the support platform 1, forming a negative pressure adsorption. At the same time, during the return phase, air can be introduced through the air pressure hole 261 to prevent the formation of negative pressure adsorption, which is conducive to the demolding of the workpiece.

[0042] The implementation principle of a solid circular metal sheet pressing device with an auxiliary pressing mechanism in this embodiment of the invention is as follows: During the stamping process, the operator starts the stamping cylinder 22, which drives the stamping block 24 to descend, thereby driving the connecting rod 34 to descend, which in turn causes the lifting screw 36 to rotate, synchronously driving the synchronous wheel 37 to rotate, which in turn drives the outer gear ring 335 to rotate, which in turn drives the internal planetary gear 332 to rotate, and simultaneously drives the sun gear 333 to rotate. The rotation of the planetary gear 332 drives the pressure plate 31 to rotate, thereby pressing the edge of the cover 10. The rotation of the sun gear 333 drives the adjusting screw 39 to rotate, thereby causing the two piston plates 391 to descend. The air pressure is adjusted through the gap between the air pressure hole 261 and the cover 10, so that the cover 10 is firmly adsorbed on the upper surface of the support platform 1, forming a negative pressure adsorption, which further improves the stability of the cover 10 on the support platform 1, and is conducive to improving the stability of the stamping process.

[0043] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A die-pressing device for solid circular metal sheets with an auxiliary pressing mechanism, comprising a support platform (1), characterized in that, A vertical plate (23) is provided on one side of the support platform (1). A support plate (21) is fixedly connected to the top of the vertical plate (23). The support plate (21) is horizontally arranged. A stamping cylinder (22) is provided on the upper end face of the support plate (21). The piston rod of the stamping cylinder (22) passes through the support plate (21) and is connected to a stamping block (24). An upper punch (25) for stamping the cover (10) is fixedly connected to the lower end face of the stamping block (24). A lower die (26) is connected to the support platform (1). A die (26) for stamping the cover (10) is provided on the lower die (26). In the placement slot (27) for placing the cover (10), a number of pressure plates (31) are provided around the cover (10). The pressure plates (31) are evenly arranged, and a rotating shaft (32) is fixedly connected to the pressure plate (31). The support platform (1) is provided with a drive mechanism (33) for synchronously driving the rotating shaft (32) to rotate. When the cover (10) is stamped, the pressure plate (31) is located above the cover (10). When the cover (10) is stamped and reset, the pressure plate (31) is located on the side of the upper end face of the support platform (1) away from the cover (10).

2. The die-pressing device for solid circular metal sheets with an auxiliary pressing mechanism according to claim 1, characterized in that, The drive mechanism (33) includes an internal gear ring (331), the support platform (1) is a hollow cavity, the internal gear ring (331) is rotatably connected to the support platform (1), a sun gear (333) is provided inside the internal gear ring (331), the sun gear (333) is located at the center of the internal gear ring (331), a number of planet gears (332) are provided between the sun gear (333) and the internal gear ring (331), and a planet carrier is provided below the sun gear (333). 334), the planet carrier (334) is fixedly connected to the support platform (1), the sun gear (333) and the planet gear (332) are rotatably connected to the upper end face of the planet carrier (334), the planet gear (332) is set one-to-one with the rotating shaft (32), the planet gear (332) and the rotating shaft (32) are coaxially fixedly connected, the sun gear (333) meshes with the planet gear (332), and the planet gear (332) meshes with the internal gear ring (331).

3. A die-pressing device for solid circular metal sheets with an auxiliary pressing mechanism according to claim 2, characterized in that, A connecting rod (34) is fixedly connected to the side of the stamping block (24) near the upright plate (23). A sliding groove (35) is provided on the side of the upright plate (23) near the stamping block (24). The sliding groove (35) extends along the height direction of the upright plate (23). A lifting screw (36) is provided inside the upright plate (23). The end of the connecting rod (34) away from the stamping block (24) is threadedly connected to the lifting screw (36). The connecting rod (34) is located at the sliding groove (35) of the upright plate (23). The connecting rod (34) and the upright plate (23) are connected to each other. 3) Sliding connection: The outer side of the inner gear ring (331) passes through the side wall of the support platform (1) and is fixedly connected to the outer gear ring (335). The outer gear ring (335) is rotatably connected to the support platform (1). The lifting screw (36) is coaxially fixedly connected to the synchronous wheel (37). The synchronous wheel (37) meshes with the outer gear ring (335). A connecting rod (38) is provided between the lower die (26) and the sun gear (333). One end of the connecting rod (38) is fixedly connected to the lower die (26), and the other end is rotatably connected to the sun gear (333).

4. A die-pressing device for a solid circular metal sheet with an auxiliary pressing mechanism according to claim 3, characterized in that, The support platform (1) is provided with an adjusting screw (39). One end of the adjusting screw (39) passes through the planetary carrier (334) and is coaxially fixedly connected to the sun gear (333). The other end is rotatably connected to the inner bottom surface of the support platform (1). The lower die (26) is provided with several air pressure holes (261). The support platform (1) is provided with a double-layer piston plate (391). Limiting blocks (392) are fixedly connected to both sides of the piston plate (391). The inner side wall of the support platform (1) is provided with a limiting groove (393). The limiting groove (393) extends along the height direction of the support platform (1). The limiting block (392) is located at the limiting groove (393) of the support platform (1). The piston plate (391) is slidably connected to the inner side wall of the support platform (1).

5. A die-pressing device for a solid circular metal sheet with an auxiliary pressing mechanism according to claim 1, characterized in that, The upper end face of the support platform (1) is fixedly connected to an abutment ring (11) for limiting the descent of the upper punch (25).

6. A die-pressing device for a solid circular metal sheet with an auxiliary pressing mechanism according to claim 1, characterized in that, The number of pressure plates (31) is three, which are evenly arranged along the periphery of the cover (10).

7. A die-pressing device for a solid circular metal sheet with an auxiliary pressing mechanism according to claim 1, characterized in that, The lower end face of the pressure plate (31) is made of a smooth material.

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