A stamping device applied to spherical gasket manufacturing

Abstract

The application relates to the technical field of stamping devices, and discloses a stamping device applied to spherical gasket manufacturing, which comprises a press main body, a workbench for bearing a die assembly is assembled in the press main body, and the workbench is assembled with a constraint piece for locking the die assembly through a mounting cavity arranged in the workbench, and a slot hole in communication with the mounting cavity is formed in the top of the workbench. The stamping device applied to spherical gasket manufacturing can effectively solve the problem that in the prior art, the positioning and locking of the die assembly on the workbench are mostly designed in a traditional split structure, and common locking modes are manual bolt tightening or adjusting multiple independent locking pieces, so that the operation is complicated, the adjusting efficiency is low, and the synchronous action of the locking pieces cannot be realized, the center axis of the die assembly is easy to deviate from the reference axis of the workbench, and the problems of asymmetric spherical surface profile of the spherical gasket and size deviation exceeding the standard are caused.

Description

Technical Field

[0001] This invention relates to the field of stamping equipment technology, and more specifically to a stamping equipment used in the manufacture of spherical gaskets. Background Technology

[0002] As a key component in mechanical transmission, sealing connection and other fields, the forming accuracy of spherical gaskets directly affects the assembly stability and operational reliability of equipment. Due to its advantages of high efficiency and low cost, stamping forming process has become the mainstream technical solution for the production of spherical gaskets, and the stamping device is the core equipment for realizing this process.

[0003] In the production process of spherical gaskets, the die assembly is the core component of the stamping device, and its cavity structure and dimensional parameters must be precisely matched with the specifications of the target spherical gasket. Because spherical gaskets have diverse applications, different scenarios have different requirements for their diameter, radius of curvature, thickness, and other specifications. Therefore, in actual production, the dies in the stamping device need to be replaced accordingly based on the change of production tasks to meet the manufacturing needs of spherical gaskets of different specifications.

[0004] However, in existing stamping devices for manufacturing spherical gaskets, the positioning and locking of the mold components on the worktable mostly adopts a traditional split structure design. The common locking method is to manually tighten the bolts or adjust multiple independent locking parts. This is not only cumbersome to operate and inefficient to adjust, but also makes it difficult to achieve synchronous action of each locking part. This can easily lead to the offset between the central axis of the mold component and the reference axis of the worktable, which in turn causes problems such as asymmetry of the spherical contour of the spherical gasket and excessive dimensional deviation. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides a stamping device for manufacturing spherical gaskets. This device effectively solves the problem that in existing technologies, the positioning and locking of the mold assembly on the worktable often employs a traditional split-structure design. Common locking methods involve manually tightening bolts or adjusting multiple independent locking components. This is not only cumbersome and inefficient, but also makes it difficult to achieve synchronized movement of all locking components. This can easily lead to misalignment between the central axis of the mold assembly and the reference axis of the worktable, resulting in asymmetrical spherical gasket contours and excessive dimensional deviations.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides a stamping device for manufacturing spherical gaskets, including a press body. The press body is equipped with a worktable for supporting a mold assembly, and the worktable is equipped with a constraint member for locking the mold assembly through an installation cavity provided inside it. The top of the worktable has a slot that communicates with the installation cavity. There are four slots arranged in a circular array along the central axis of the worktable. The inner wall of the slot has a guide groove, and there are two guide grooves arranged symmetrically along the central plane of the slot.

[0008] The constraint component includes a limiting plate assembled in the slot. The limiting plate has a flexible rubber pad on the side near the mold assembly. The mounting cavity is provided with a driving component for adjusting the position of the limiting plate. The driving component can drive the limiting plate to slide along the guide groove, so that the four limiting plates converge synchronously toward the central axis of the worktable, so as to realize the calibration and initial positioning of the mold assembly.

[0009] Furthermore, the top of the workbench is provided with a mounting hole that communicates with the mounting cavity, and a support plate is slidably connected in the mounting hole, and a ball bearing assembly is fitted into the top of the support plate;

[0010] A support plate for supporting the support plate is fixedly connected inside the mounting hole, and the support plate has multiple plates arranged in a circular array along the central axis of the mounting hole.

[0011] Furthermore, a guide rod is fixedly connected to the bottom of the support plate, penetrating the bearing plate. Two guide rods are provided and symmetrically distributed along the central axis of the support plate. The guide rods are connected to the bottom of the bearing plate through a return spring provided on their outer side.

[0012] The bottom of the support plate is fixedly connected to a support rod that penetrates the bearing plate, and the support rod and the guide rod are staggered. An auxiliary ball bearing is fitted into the bottom of the support rod.

[0013] Furthermore, a shaft is slidably connected inside the limiting plate, and there are two shafts symmetrically distributed along the center plane of the limiting plate. A locking plate is fixedly connected to the top of the shaft, and the locking plate is designed with an inclined surface on the side near the mold assembly. An abutment plate is fixedly connected to the bottom of the shaft, and the abutment plate is connected to the bottom of the limiting plate by a compression spring set on its top.

[0014] Furthermore, a wedge is fixedly connected to the top of the abutment plate, and two wedges are provided and symmetrically distributed along the center surface of the abutment plate. The wedge is designed with an inclined surface on the side near the mold assembly. An arc block that fits against the inclined surface of the wedge is fixedly connected in the slot. An abutment rod that penetrates the abutment plate is fixedly connected to the bottom of the limiting plate.

[0015] Furthermore, the driving component includes an adjusting plate rotatably connected inside the mounting cavity. The top of the adjusting plate has a guide hole that fits with the outer circumferential surface of the abutment rod. The top of the adjusting plate is fixedly connected to a protrusion that fits with the spherical surface of the auxiliary ball bearing. The bottom of the worktable is fixedly connected to a drive motor connected to the adjusting plate.

[0016] Furthermore, the guide groove includes an integrally formed high region and a low region, and a preset height difference is formed between the high region and the low region;

[0017] When the limiting plate slides to the low position area, the locking plate is in a non-locking state; when the limiting plate slides to the high position area, the locking plate is in a locked state.

[0018] The technical solution provided by this invention has the following advantages compared with the prior art:

[0019] This invention incorporates a constraint component. Four slots on the top of the worktable are arranged in a circular array along the central axis. The driving component drives four sets of limiting plates to slide directionally along symmetrically arranged guide slots through the arc-shaped guide holes of the adjusting plate, synchronously converging towards the central axis. Utilizing the symmetrical constraint characteristics of the centering mechanism, the central axis of the mold assembly is forced to coincide with the reference axis of the worktable, solving the axial misalignment problem caused by the inability to synchronize the movements of traditional split locking components. This ensures the symmetry of the spherical contour of the spherical gasket from the source. Furthermore, when the adjusting plate rotates, the auxiliary balls of the protruding drive support rod slide along its surface. The height difference between the high and low sections causes the support plate to rise and fall axially along the guide rod, disengaging the bottom of the mold from the top surface of the worktable. Simultaneously, the ball bearing assembly on the top of the support plate converts the sliding friction between the mold and the support plate into rolling friction, reducing the driving force required during correction and preventing scratches on the top surface of the worktable and wear failure on the bottom surface of the mold caused by long-term friction. Meanwhile, the constraint components employ a dual locking mechanism to enhance the reliability of mold fixation. The first layer is the radial convergence limiting of the limiting plate, where the flexible rubber pad generates continuous radial pressure through compression elastic deformation. The second layer is the axial pressing limiting of the locking plate. When the limiting plate moves, the wedge block of the abutment plate engages with the inclined surface of the arc block inside the slot, generating an axial force that drives the shaft to press the locking plate against the mold surface. This dual locking mechanism works synergistically to prevent mold displacement due to vibration during stamping. Compared to traditional bolt locking, the locking torque dynamically increases with the compression of the flexible rubber pad, enhancing the mold's locking stability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the three-dimensional separation structure of the workbench in an embodiment of the present invention;

[0023] Figure 3 This is a cross-sectional planar structural diagram of the worktable according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the three-dimensional separation structure of the workbench and support plate in an embodiment of the present invention;

[0025] Figure 5 This is an embodiment of the present invention. Figure 4 A magnified structural diagram of part A in the middle;

[0026] Figure 6 This is a schematic diagram of the three-dimensional separation structure of the driving component according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the three-dimensional separation structure of the limiting member according to an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the planar state transformation structure of the support plate according to an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the planar state transformation structure of the limiting plate in an embodiment of the present invention.

[0030] The labels in the diagram represent: 1. Press body; 2. Worktable; 21. Mounting cavity; 22. Constraint component; 221. Limiting plate; 222. Shaft; 223. Locking plate; 224. Abutment plate; 225. Wedge block; 226. Abutment rod; 23. Slot; 231. Guide groove; 232. Arc block; 24. Driving component; 241. Adjusting plate; 242. Guide hole; 243. Protrusion; 25. Mounting hole; 251. Support plate; 252. Ball assembly; 253. Bearing plate; 254. Guide rod; 255. Support rod; 256. Auxiliary ball. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] The present invention will be further described below with reference to embodiments.

[0033] Example:

[0034] Please see Figures 1-9 The present invention provides a technical solution: a stamping device for manufacturing spherical gaskets, including a press body 1, a worktable 2 for supporting mold components is assembled inside the press body 1, and the worktable 2 is equipped with a constraint member 22 for locking the mold components through an installation cavity 21 provided inside it. The top of the worktable 2 is provided with a slot 23 communicating with the installation cavity 21. There are four slots 23 arranged in a circumferential array along the central axis of the worktable 2. The inner wall of the slot 23 is provided with a guide groove 231, and there are two guide grooves 231 arranged symmetrically along the central plane of the slot 23.

[0035] The constraint component 22 includes a limiting plate 221 assembled in the slot 23. The limiting plate 221 has a flexible rubber pad on the side near the mold assembly. The mounting cavity 21 is provided with a driving component 24 for adjusting the position of the limiting plate 221. The driving component 24 can drive the limiting plate 221 to slide directionally along the guide groove 231, so that the four limiting plates 221 converge synchronously toward the central axis of the worktable 2, so as to realize the calibration and initial positioning of the mold assembly.

[0036] The top of the workbench 2 is provided with a mounting hole 25 that communicates with the mounting cavity 21, and a support plate 251 is slidably connected in the mounting hole 25. A ball bearing assembly 252 is fitted into the top of the support plate 251.

[0037] A support plate 253 for supporting the support plate 251 is fixedly connected inside the mounting hole 25, and the support plate 253 has multiple plates arranged in a circular array along the central axis of the mounting hole 25.

[0038] The bottom of the support plate 251 is fixedly connected to a guide rod 254 that passes through the bearing plate 253. There are two guide rods 254 and they are symmetrically distributed along the central axis of the support plate 251. The guide rods 254 are connected to the bottom of the bearing plate 253 by a return spring set on their outer side.

[0039] A support rod 255 that penetrates the bearing plate 253 is fixedly connected to the bottom of the support plate 251, and the support rod 255 and the guide rod 254 are staggered. An auxiliary ball bearing 256 is fitted into the bottom of the support rod 255.

[0040] A shaft 222 is slidably connected inside the limiting plate 221, and there are two shafts 222 that are symmetrically distributed along the center plane of the limiting plate 221. A locking plate 223 is fixedly connected to the top of the shaft 222, and the locking plate 223 is designed with an inclined surface on the side near the mold assembly. An abutment plate 224 is fixedly connected to the bottom of the shaft 222, and the abutment plate 224 is connected to the bottom of the limiting plate 221 by a compression spring set on its top.

[0041] A wedge 225 is fixedly connected to the top of the abutment plate 224, and there are two wedges 225 that are symmetrically distributed along the center surface of the abutment plate 224. The wedge 225 has an inclined design on the side near the mold assembly. An arc block 232 that fits the inclined surface of the wedge 225 is fixedly connected in the slot 23. An abutment rod 226 that penetrates the abutment plate 224 is fixedly connected to the bottom of the limiting plate 221.

[0042] The driving component 24 includes an adjusting plate 241 rotatably connected inside the mounting cavity 21. The top of the adjusting plate 241 has a guide hole 242 that fits against the outer circumferential surface of the abutment rod 226. The top of the adjusting plate 241 is fixedly connected to a protrusion 243 that fits against the spherical surface of the auxiliary ball 256. The bottom of the worktable 2 is fixedly connected to a drive motor that is connected to the adjusting plate 241.

[0043] The guide groove 231 includes an integrally formed high-level region and a low-level region, with a preset height difference between the high-level region and the low-level region;

[0044] When the limiting plate 221 slides to the low position area, the locking plate 223 is in a non-locking state; when the limiting plate 221 slides to the high position area, the locking plate 223 is in a locked state.

[0045] The working principle and advantages of the stamping device used in the manufacture of spherical gaskets:

[0046] In practical applications, operators use an external transfer unit to place the stamping die, which meets the requirements of the spherical gasket stamping process, into the preset positioning area on top of worktable 2. Because the stamping die (especially the spherical gasket stamping die, which requires a spherical cavity structure and a heavy-duty design) is quite heavy, the external transfer unit can only achieve coarse positioning of the die. Subsequent precise positioning and calibration by the operator requires auxiliary tools. During calibration, the bottom surface of the die and the top surface of worktable 2 are in sliding friction contact. Pushing the die requires a large driving force, making the operation difficult. Furthermore, long-term friction can easily lead to scratches, damage, and wear failure on the top surface of worktable 2 and the bottom surface of the die.

[0047] In this invention, the drive motor built into the drive component 24 drives the adjustment plate 241 to rotate around its central axis. During this process, the auxiliary ball bearings 256 mounted on the bottom of the support plate 251 gradually come into contact with the protrusion 243. In the initial contact stage, the auxiliary ball bearings 256 are located in the lower section of the protrusion 243. As the adjustment plate 241 continues to rotate, the support rod 255, together with the auxiliary ball bearings 256, gradually moves along the protrusion 243 from the lower section to the higher section. Because there is a preset height difference between the lower and higher sections of the protrusion 243, this height difference can drive the support plate 251 to make linear displacement along its central axis, thereby driving the mold to synchronously complete the displacement adjustment, and finally causing the bottom of the mold to disengage from the top surface of the worktable 2, avoiding the friction caused by direct contact between the mold and the worktable 2, and preventing wear and failure of both.

[0048] It is worth noting that the mounting hole 25 has a built-in bearing plate 253, which, together with the guide rod 254 and support rod 255 mounted at the bottom of the support plate 251, can constrain the support plate 251 to only make unidirectional linear displacement along its central axis. At the same time, the limiting constraint effect of the bearing plate 253 on the support plate 251 can prevent the support plate 251 from rotating or shifting within the mounting hole 25, ensuring that the initial coarse positioning reference of the mold on the two sides of the worktable does not change, and ensuring that the subsequent mold positioning and correction accuracy is not affected.

[0049] When the adjusting plate 241 rotates at a constant speed around its central axis, the arc-shaped guide hole 242 at its top and the abutment rod 226 inside the constraint member 22 form a kinematic pair, transmitting driving force through the cam transmission principle. During the rotation of the adjusting plate 241, the arc-shaped guide hole 242 applies driving force to the abutment rod 226 through the cam transmission principle, thereby driving the constraint member 22 to translate along the guide groove 231 inside the slot 23. As the adjusting plate 241 continues to rotate, under the guidance of the arc-shaped guide hole 242, the abutment rod 226 drives the limiting plate 221 to move synchronously along the guide groove 231. In the initial state, the limiting plate 221 is in the low section of the guide groove 231. At this time, the overall height of the constraint member 22 is not higher than the table surface 2. The adjusting plate 241 continues to rotate, and the constraint member 22 gradually moves to the high area of ​​the guide groove 231. With the help of the preset height difference between the low and high areas of the guide groove 231, the four sets of constraint members 22 extend out of the slot hole 23 simultaneously (when the constraint member 22 is in the initial position of the high area of ​​the guide groove 231, the size of the area enclosed by the four sets of constraint members 22 is larger than the outer size of the mold).

[0050] The adjusting plate 241, in conjunction with the arc-shaped guide hole 242, continuously drives the abutment rod 226 to move along the high section of the guide groove 231, and the four sets of constraint members 22 move towards the outside of the mold simultaneously. During this process, the four sets of limiting plates 221 achieve mold posture correction through the centering principle until the limiting plates 221 are completely in contact with the outer peripheral surface of the mold, thus completing the mold correction process.

[0051] During the calibration process, the support rod 255, together with the auxiliary ball bearings 256, rolls along the high section of the protrusion 243, ensuring that the mold remains in non-contact with the worktable 2 surface. Simultaneously, the ball bearing assembly 252, fitted into the top of the support plate 251, utilizes rolling friction instead of sliding friction, significantly reducing the frictional resistance between the mold and the support plate 251 and improving the stability of the calibration process. The ball bearing assembly 252 of the support plate 251 and the auxiliary ball bearings 256 of the support rod 255 form a dual rolling friction structure, respectively reducing the frictional resistance between the mold and the support plate 251, and between the support plate 251 and the adjusting plate 241. This allows for smoother mold movement during positioning and calibration, reduces jamming, and lowers the difficulty for operators in fine-tuning the mold's posture, making it particularly suitable for spherical gasket stamping dies with significant mass.

[0052] After the mold is aligned, the support rod 255 resets along the lower section of the protrusion 243 (the upper and lower sections of the protrusion 243 are transitioned by a slope), and the support plate 251 drives the mold to descend along the area enclosed by the four sets of limiting plates 221 to the workbench 2 surface (the mold has been aligned when the support plate 251 resets). Because the limiting plate 221 is fitted with a flexible rubber pad on its inner side, the limiting plate 221 can continue to move towards the mold side, causing the flexible rubber pad to undergo compressive elastic deformation.

[0053] The drive motor drives the limiting plate 221 to move continuously along the high area of ​​the guide groove 231 via the adjusting plate 241, the arc-shaped guide hole 242, and the abutment rod 226. Under the buffering effect of the flexible rubber pad, the limiting plate 221 further generates a short-stroke displacement, improving the limiting reliability of the mold. During this process, the wedge 225 on the abutment plate 224 gradually abuts against the arc block 232 on the inner wall of the slot 23. As the abutment deepens, the compressive force on the wedge 225 gradually increases, driving the abutment plate 224 to drive the shaft 222 to move axially along the axis of the abutment rod 226 until the locking plate 223 at the top of the shaft 222 is in contact with the mold surface. Finally, the four sets of locking plates 223 and the limiting plate 221 enclose a mold locking and limiting space. As the compression of the flexible rubber pad increases, the locking torque of the locking plate 223 on the mold increases synchronously.

[0054] After the mold is aligned and locked, the operator can then use the pressure mechanism built into the press body 1 to press the blank inside the mold, thus completing the production of the spherical gasket. When the operator needs to change the mold in the stamping device according to the production task, the operator only needs to drive the adjusting plate 241 to rotate in the opposite direction to release the constraint 22 from the mold. At this time, the operator can remove the mold from the worktable 2 for replacement.

[0055] The drive motor drives the adjustment plate 241 to rotate in both directions, which can realize the integrated control of the gathering and locking and dispersing unlocking actions of the limit plate 221. There is no need for manual adjustment or tightening of individual locking parts or bolts. The locking and unlocking of the mold can be completed by motor control alone, which greatly simplifies the operation process.

[0056] The present invention employs constraint member 22, which has the following advantages:

[0057] Advantage 1: The four slots 23 on the top of the worktable 2 are arranged in a circular array along the central axis. The driving component 24 drives the four sets of limiting plates 221 to slide directionally along the symmetrically arranged guide grooves 231 through the arc-shaped guide hole 242 of the adjusting plate 241, and they converge synchronously towards the central axis. With the help of the symmetrical constraint characteristics of the centering mechanism, the central axis of the mold assembly is forced to coincide with the reference axis of the worktable 2, which solves the problem of axis misalignment caused by the inability of traditional split locking components to move synchronously. This ensures the symmetry of the spherical contour of the spherical gasket from the source. When the adjusting plate 241 rotates, the protrusion 243 drives the auxiliary ball 256 of the support rod 255 to slide along its surface. The height difference between the high and low sections drives the support plate 251 to rise and fall axially along the guide rod 254, so that the bottom of the mold is disengaged from the top surface of the worktable 2. Meanwhile, the ball bearing assembly 252 on the top of the support plate 251 converts the sliding friction between the mold and the support plate 251 into rolling friction, which reduces the driving force required during calibration and avoids scratches on the top surface of the workbench 2 and wear failure on the bottom surface of the mold caused by long-term friction.

[0058] The second advantage is the dual locking mechanism, which enhances the reliability of mold fixation. The first layer is the radial convergence limiting of the limiting plate 221, where the flexible rubber pad generates continuous radial pressure through compression elastic deformation. The second layer is the axial pressing limiting of the locking plate 223. When the limiting plate 221 moves, the wedge block 225 of the abutment plate 224 and the inclined surface of the inner arc block 232 of the slot 23 engage to generate an axial force, which drives the shaft 222 to press the locking plate 223 against the mold surface. The synergistic effect of the dual locking mechanism prevents the mold from shifting due to vibration during the stamping process. Compared with traditional bolt locking, the locking torque dynamically increases with the compression of the flexible rubber pad, increasing the locking stability of the mold.

[0059] Thirdly, the guide groove 231 is composed of an integrally formed high-position area and a low-position area, which form a preset height difference. When the limiting plate 221 slides to the low-position area, the locking plate 223 is in a non-locking state, which facilitates mold placement and removal. When it slides to the high-position area, the wedge block 225 and the arc block 232 automatically engage to trigger the locking action. Furthermore, a flexible rubber pad is installed on the side of the limiting plate 221 near the mold assembly. During the radial convergence process, the flexible rubber pad first contacts the outer peripheral surface of the mold and undergoes elastic deformation. On the one hand, it absorbs the impact force when the limiting plate 221 converges through a buffering effect, avoiding damage to the mold edge caused by rigid contact; on the other hand, it increases the contact area with the mold and improves the stability of radial limiting.

[0060] Fourthly, when the constraint member 22 is located in the low area of ​​the guide groove 231, the locking plate 223 and the limiting plate 221 built into the constraint member 22 do not exceed the height of the worktable 2. This structural design can effectively avoid the physical interference between the mold and the constraint member 22 when the external transfer unit performs rough positioning and removal operations on the mold. It ensures that the mold can be smoothly placed into the preset positioning area of ​​the worktable 2, and prevents the mold cavity from being damaged by collision with the constraint member 22, thus ensuring the accuracy of the mold cavity and the structural integrity of the constraint member 22.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stamping apparatus for manufacturing spherical gaskets, comprising a press body (1), characterized in that, The press body (1) is equipped with a worktable (2) for carrying the mold assembly, and the worktable (2) is equipped with a constraint member (22) for locking the mold assembly through the mounting cavity (21) provided inside it. The top of the worktable (2) is provided with a slot (23) that communicates with the mounting cavity (21). There are four slots (23) and they are arranged in a circular array along the central axis of the worktable (2). The inner wall of the slot (23) is provided with a guide groove (231), and there are two guide grooves (231) that are symmetrically distributed along the central plane of the slot (23). The constraint member (22) includes a limiting plate (221) assembled in the slot (23). The limiting plate (221) has a flexible rubber pad on the side near the mold assembly. The mounting cavity (21) is provided with a driving member (24) for adjusting the position of the limiting plate (221). The driving member (24) can drive the limiting plate (221) to slide along the guide groove (231) in a directional direction, so that the four limiting plates (221) converge synchronously toward the central axis of the worktable (2) to achieve calibration and preliminary positioning of the mold assembly. A shaft (222) is slidably connected inside the limiting plate (221), and there are two shafts (222) symmetrically distributed along the center plane of the limiting plate (221). A locking plate (223) is fixedly connected to the top of the shaft (222), and the locking plate (223) is designed with an inclined surface on the side near the mold assembly. An abutment plate (224) is fixedly connected to the bottom of the shaft (222), and the abutment plate (224) is connected to the limiting plate (221) by a compression spring set on its top. 1) The bottom is connected, and the top of the abutment plate (224) is fixedly connected to a wedge (225), and there are two wedges (225) symmetrically distributed along the center plane of the abutment plate (224). The wedge (225) is designed with an inclined surface on the side near the mold assembly. An arc block (232) that fits the inclined surface of the wedge (225) is fixedly connected in the slot (23). The bottom of the limiting plate (221) is fixedly connected to an abutment rod (226) that penetrates the abutment plate (224). The guide groove (231) includes an integrally formed high region and a low region, and a preset height difference is formed between the high region and the low region; When the limiting plate (221) slides to the low position area, the locking plate (223) is in a non-locking state; when the limiting plate (221) slides to the high position area, the locking plate (223) is in a locked state.

2. The stamping device for manufacturing spherical gaskets according to claim 1, characterized in that: The top of the workbench (2) is provided with a mounting hole (25) that communicates with the mounting cavity (21), and a support plate (251) is slidably connected in the mounting hole (25). A ball bearing assembly (252) is fitted into the top of the support plate (251). The mounting hole (25) is fixedly connected to a support plate (253) for supporting the support plate (251), and the support plate (253) has multiple plates arranged in a circular array along the central axis of the mounting hole (25).

3. A stamping device for manufacturing spherical gaskets according to claim 2, characterized in that: The bottom of the support plate (251) is fixedly connected to a guide rod (254) that passes through the bearing plate (253). There are two guide rods (254) and they are symmetrically distributed along the central axis of the support plate (251). The guide rods (254) are connected to the bottom of the bearing plate (253) through a return spring set on its outer side. The bottom of the support plate (251) is fixedly connected to a support rod (255) that penetrates the bearing plate (253), and the number of the support rod (255) and the guide rod (254) are arranged in a one-to-one correspondence. The guide rod (254) and the support rod (255) are alternately distributed. The bottom of the support rod (255) is fitted with an auxiliary ball bearing (256).

4. A stamping device for manufacturing spherical gaskets according to claim 1, characterized in that: The driving component (24) includes an adjusting plate (241) rotatably connected inside the mounting cavity (21). The top of the adjusting plate (241) is provided with a guide hole (242) that fits against the outer circumferential surface of the abutment rod (226). The top of the adjusting plate (241) is fixedly connected with a protrusion (243) that fits against the spherical surface of the auxiliary ball (256). The bottom of the worktable (2) is fixedly connected with a drive motor that is connected to the adjusting plate (241).

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