Fitness equipment machining stamping die and method thereof

Abstract

The invention discloses a fitness equipment machining stamping die and a method thereof, and belongs to the technical field of stamping die, the fitness equipment machining stamping die comprises a base, limiting columns are fixedly connected to the four corners of the top of the base, an adapting mechanism is installed on the side, close to the base, of a stamping mechanism, and the adapting mechanism comprises a plurality of limiting bodies; and a fixing mechanism is installed in the base, the fixing mechanism comprises two threaded rods, the outer walls of the two arc-shaped grooves are in threaded connection with extrusion bodies, and corresponding fixing clamps are arranged on the bevel edges of the opposite sides of the two extrusion bodies in a limiting mode. By designing the stamping mechanism, the adapting mechanism and the fixing mechanism, when the fitness equipment machining stamping die conducts stamping, a stamping die head can be adjusted, the situation that local stress is single in the stamping process is avoided, meanwhile, it can be guaranteed that dumbbell pieces are always kept in the middle during stamping, and taking is convenient after stamping is completed.

Description

Technical Field

[0001] The invention belongs to the technical field of stamping dies, and in particular relates to a stamping die for processing fitness equipment and a method thereof. Background Art

[0002] As an important part of modern healthy lifestyle, fitness equipment has become an indispensable tool in physical exercise and health management with the development of science and technology and the continuous improvement of people's demand for fitness. There are many types of fitness equipment, from simple dumbbells and barbells to complex aerobic exercise equipment such as treadmills, spinning bikes, elliptical machines, etc. These equipment help users effectively exercise different muscle groups, improve physical fitness, enhance cardiopulmonary function, and improve overall health by simulating various exercise methods. The continuous innovation and technological upgrading of fitness equipment not only provides users with a more efficient and safe exercise experience, but also promotes the development and transformation of the global fitness industry.

[0003] With the development of science and technology and the advancement of urbanization, many people have led a more sedentary life, facing computers, mobile phones and other electronic devices for a long time. In order to combat this health hazard, people have begun to pay more attention to fitness, and with it comes the demand for fitness equipment. Existing fitness equipment processing stamping dies usually use fixed placement grooves to process dumbbell pieces when in use, so that the dumbbell pieces cannot be quickly removed after stamping, and thus the dumbbell pieces cannot be processed in large quantities, affecting the processing speed. In addition, during the stamping process, the stamping die always maintains a fixed position for stamping, which can easily cause excessive pressure on local areas, resulting in uneven deformation, affecting the quality of the finished product. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a fitness equipment processing stamping die and method thereof.

[0005] The technical solution adopted to solve the above technical problems is: a fitness equipment processing stamping die, including a base, the top four corners of the base are fixedly connected to the limit columns, and the outer walls of the four limit columns are all equipped with stamping mechanisms, and the stamping mechanism is equipped with an adaptation mechanism near the side of the base for stably stamping dumbbell plates; The adapting mechanism comprises a plurality of limiting bodies, and the plurality of limiting bodies are located at the bottom of the middle side of the four limiting columns and are provided with fitting grooves for fitting the top arc edge of the dumbbell plate; A fixing mechanism is installed inside the base to cooperate with a plurality of fitting grooves to position the dumbbell pieces; The fixing mechanism comprises two threaded rods, and the outer walls of the two arc-shaped grooves are both threadedly connected with extrusion bodies, and the oblique edges of the two extrusion bodies on opposite sides are limited with corresponding fixing clips for positioning the dumbbell plates.

[0006] One side of the base away from the four limit posts is fixedly connected with a main body at the bottom.

[0007] Furthermore, the stamping mechanism includes two support plates slidably connected to the outer walls of the four limit posts. Fixed circular plates are fixedly connected to the opposite sides of the two support plates. Arc-shaped grooves are provided in a staggered manner on the opposite sides of the two fixed circular plates. A regulating column is slidably connected to the center of the fixed circular plate on one of the support plates. At the concave parts of the two arc-shaped grooves on the outer wall of the top of the regulating column, two opposite support columns are fixedly connected. Four adjusting bolts are slidably connected to the periphery of the inner sides of the two support plates away from the fixed circular plates. Nuts are threadedly connected to the outer walls of the four adjusting bolts for adjusting the distance between the two fixed circular plates to control the stamping force. A first spring is fixedly connected to the outer walls of the four adjusting bolts between the two support plates. The side of the regulating column away from the support plate is fixedly connected with a die head. The limit rings on the side of the two support plates away from the fixed circular plates are threadedly connected with threaded rods. The die head is stamped to the concave part of the upper arc-shaped groove and then drops to the concave part of the lower arc-shaped groove.

[0008] Through the above technical solution, during use, when stamping dumbbells of fitness equipment, it can be adjusted according to the specifications of the dumbbells. At this time, the stamping mechanism is used to adjust it to control the stamping distance, so as to ensure that the stamping force can be adjusted accordingly. And during the adjustment process, through a unique structure, it can ensure that the punch can rotate during stamping, protect the punch, and avoid the mold from gradually becoming fatigued under long-term high-pressure impact, thereby extending its service life. Specifically, by turning the nut with a wrench, the two support plates are moved closer or farther away, so that the four first springs are deformed. At the same time, during the stamping process, the two support plates move downward. When the die head finishes stamping the dumbbell plate, the stamping will push the regulating column upward. The two support columns will slide along one side of the arc-shaped groove and fall into the fixed circular plate at the bottom along the arc-shaped groove at the bottom during the gravity fall process, so as to ensure that the die head is adjusted. It should be noted that adjusting with the nut is to control the distance between the two fixed circular plates to control the buffer time of the regulating column.

[0009] Furthermore, a stamping assembly is installed on the side of the main body away from the base at the top. The stamping assembly includes a plurality of hydraulic oil pipes. The output ends of two of the hydraulic oil pipes are connected to hydraulic cylinders, and the output end of the other hydraulic oil pipe is fixedly connected with a stamping connection column.

[0010] Through the above technical solution, the relevant hydraulic components are arranged in the main body. Through the hydraulic pump arranged in the main body in the prior art and transmitted through the hydraulic oil pipes, the hydraulic cylinders and the stamping connection column are used in cooperation to complete the stamping of the dumbbell plates in the fitness equipment.

[0011] Further, a second spring is installed on one side of each of the plurality of limiting bodies away from the corresponding fitting groove. A circular ring is slidably connected to the outer walls of the plurality of limiting bodies. A circumferential groove is formed on one side of the outer wall of the circular ring close to the second spring. When the dumbbell pieces are pressed and extruded, the second springs located inside the circumferential groove of the plurality of limiting bodies are compressed. The widths of the plurality of limiting bodies on the side away from the second spring are narrower than those on the side close to the second spring, which is used for limiting.

[0012] Through the above technical solution, after the dumbbell pieces are placed, during the subsequent stamping process, the adaptation mechanism can quickly fit the dumbbell pieces during the stamping process, adapt to the sizes of different specifications of dumbbell pieces, and at the same time center the dumbbell pieces, making the stamping position accurate. Specifically, when the die head contacts the dumbbell, at this time, the arc edges of the fitting grooves between the two fixed circular plates first contact the top edges of the dumbbell pieces. At the same time, according to the specifications of the dumbbell pieces, the limiting bodies will be extruded outward. Under the elastic potential energy of the second springs, forces will be evenly generated to center the dumbbell pieces for stamping.

[0013] Further, cylinders are fixedly connected to the tops of the two threaded rods. Guide columns are fixedly connected to the inside of the base away from the two extrusion bodies. Intermediate connectors are installed in the middle of the two guide columns. Third springs are fixedly connected to the two fixing clips close to the corresponding fixing clips. Adjustment grooves are formed at the bottoms of the corresponding extrusion bodies inside the base. Circular grooves are formed on the opposite sides of the tops of the two fixing clips for fitting the circular rings to complete stamping. By rotating the two threaded rods, the extrusion bodies are driven to move downward to center the dumbbell pieces by extruding the corresponding fixing clips.

[0014] Through the above technical solution, when the dumbbell plates are placed, as the stamping assembly drives the adaptation mechanism to move downward for stamping, during the downward movement, at this time, the fixing mechanism will squeeze the dumbbell plates towards the middle as it descends, ensuring the stability of the dumbbell plates during the stamping process. At the same time, it can limit the dumbbell plates up and down together with the adaptation mechanism, thereby ensuring the stamping quality. Specifically, at this time, one of the support plates is rotationally connected to the threaded rod connected to the two cylinders, thereby driving the threaded rod to rotate, and at the same time driving the two extrusion bodies to move downward. The hypotenuses of the two extrusion bodies will gradually squeeze the fixing clips towards the dumbbell plate end to move, realizing the centering positioning of the dumbbell plates. At the same time, the third springs between the two fixing clips and the corresponding intermediate connectors are compressed. As the support plate moves downward until the dumbbell plates are stamped, at the same time, the two fixing clips squeeze the dumbbell plates to the center most. It should be understood that as the specifications of different dumbbell plates are different, if the dumbbell plates are smaller than the normal specifications, at this time, the stamping force needs to be reduced. Then one of the fixed circular plates will move downward, and at the same time, the stamping height is reduced. At this time, the horizontal planes of the two adjustment grooves at the bottoms of the two extrusion bodies are lower than the horizontal plane of the dumbbell plates. Therefore, the falling height of the extrusion bodies can continue to decrease, and it can continue to squeeze the fixing clips until the smaller-sized dumbbell plates are centered to ensure stability. At the same time, multiple limiting bodies are located inside. The circular grooves are for cooperating with the circular rings to ensure that the multiple limiting bodies fit the top of the dumbbell plates.

[0015] A stamping method for a stamping die for processing fitness equipment includes the following specific steps: Step 1: According to the size and production requirements of the dumbbell, first adjust the stamping die. Turn the nut with a wrench to make the two support plates approach or move away from each other, thereby deforming the four first springs to change the stamping force. At the same time, place the dumbbell plates between the two fixing clips, and then start the hydraulic cylinder. The stamping work is realized by the combined action of the hydraulic oil pipe and the stamping connection column. Step 2: When the piston end of the hydraulic cylinder and the bottom of the stamping connection column drive the two support plates to stamp downward, at this time, one of the support plates is rotationally connected to the threaded rod connected to the two cylinders, thereby driving the threaded rod to rotate, and at the same time driving the two extrusion bodies to move downward. The hypotenuses of the two extrusion bodies will gradually squeeze the fixing clips towards the dumbbell plate end to move, realizing the centering positioning of the dumbbell plates. At the same time, the third springs between the two fixing clips and the corresponding intermediate connectors are compressed. As the support plate moves downward until the dumbbell plates are stamped, at the same time, the two fixing clips squeeze the dumbbell plates to the center most. After the stamping is completed, under the action of the elastic potential energy of the multiple third springs, the fixing clips return to their original positions. Step 3: During the stamping process of the dumbbell plate, when the die head contacts the dumbbell, at this time, the arc edges of the fitting grooves between the two fixed circular plates first contact the top edge of the dumbbell plate. At the same time, according to the specifications of the dumbbell plate, the limiting body will be extruded outward. Under the elastic potential energy of the second spring, a uniform force will be generated, enabling the dumbbell plate to be centered during stamping. Meanwhile, during stamping, the adjusting column will be pushed upward. The two support columns will slide along one side of the arc-shaped groove and fall into the fixed circular plate at the bottom along the arc-shaped groove at the bottom during the gravity drop process, thereby realizing the rotation of the direction.

[0016] The beneficial effects of the present invention are as follows: (1) By designing the stamping mechanism, adaptation mechanism, and fixing mechanism, the stamping die for fitness equipment processing can adjust the stamping die head during stamping, avoiding single local force during the stamping process. At the same time, it can ensure that the dumbbell plate always remains centered during stamping, and after stamping, it is convenient to take. (2) By designing the stamping mechanism, when punching the dumbbell plate of fitness equipment, after each punching is completed, the rotation of the punch can be realized through a unique structure. Furthermore, rotation can ensure that each stamping can be successfully completed without angle errors. In addition, the pressure can be adjusted according to the different hardness, thickness, elasticity, and other characteristics of different materials of the dumbbell plate. (3) By designing the adaptation mechanism and fixing mechanism, during the stamping of the dumbbell plate, the dumbbell plate can be quickly centered and stamped during the stamping process, and then released after stamping, which is convenient for taking the dumbbell plate. On this basis, the fixing mechanism and the die head can adapt to the changes in the specifications of the dumbbell plate. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural view of the first perspective of the present invention; Figure 2 is a schematic structural view of the second perspective of the present invention; Figure 3 is the front view of the present invention; Figure 4 is a schematic structural view of the stamping mechanism of the present invention; Figure 5 is a schematic structural view of the adaptation mechanism of the present invention; Figure 6 is an exploded view of the adaptation mechanism of the present invention; Figure 7 is a schematic structural view of the fixing mechanism of the present invention.

[0018] Reference numerals: 11, main body; 12, base; 13, limit post; 2, stamping mechanism; 21, support plate; 22, adjusting bolt; 23, nut; 24, first spring; 25, fixed circular plate; 26, arc-shaped groove; 27, adjusting post; 28, support post; 29, die head; 3, stamping assembly; 31, hydraulic oil pipe; 32, hydraulic cylinder; 33, stamping connection post; 4, adaptation mechanism; 41, circular ring; 42, circumferential groove; 43, second spring; 44, limiting body; 45, fitting groove; 5, fixing mechanism; 51, cylinder; 52, threaded rod; 53, guide post; 54, intermediate connecting body; 55, third spring; 56, extrusion body; 57, adjusting groove; 58, fixing clamp; 59, circular groove. Detailed implementation manners

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] As Figures 1 - 7As shown, a fitness equipment processing stamping die of the present embodiment includes a base 12, and the four corners of the top of the base 12 are fixedly connected to the limiting columns 13, and the outer walls of the four limiting columns 13 are installed with a stamping mechanism 2, and the stamping mechanism 2 includes two support plates 21 slidably connected to the outer walls of the four limiting columns 13, and the opposite sides of the two support plates 21 are fixedly connected to the fixed circular plates 25, and the opposite sides of the two fixed circular plates 25 are provided with staggered arc grooves 26, and the center of the fixed circular plate 25 located on one of the support plates 21 is slidably connected to an adjusting column 27, and the outer wall of the top of the adjusting column 27 is located between the two arc grooves. Two supporting columns 28 are fixedly connected to the concave part of the groove 26. Adjusting bolts 22 are slidably connected around the sides of the two supporting plates 21 away from the fixed circular plate 25. The outer walls of the four adjusting bolts 22 are all threadedly connected with nuts 23, which are used to adjust the distance between the two fixed circular plates 25 to control the punching force. The outer walls of the four adjusting bolts 22 are located between the two supporting plates 21 and are fixedly connected with a first spring 24. The adjusting column 27 is fixedly connected with a die head 29 on the side away from the supporting plate 21. The limiting rings of the two supporting plates 21 on the side away from the fixed circular plate 25 are threadedly connected with the threaded rod 52, and the die head 29 is subjected to force. The arc groove 26 punched to the top falls to the arc groove 26 at the bottom. When in use, when punching the dumbbells of fitness equipment, it can be adjusted according to the specifications of the dumbbells. At this time, the punching mechanism 2 is used to adjust it and control the punching distance, so as to ensure that the punching intensity is adjusted accordingly. In the process of adjustment, through the unique structure, it can be ensured that the punch can be rotated during punching, the punch is protected, and the mold is prevented from gradually fatigued under long-term high-pressure impact, thereby extending its service life. Specifically, the nut 23 is turned by a wrench so that the two support plates 21 approaches or moves away, thereby causing the four first springs 24 to deform. At the same time, during the stamping process, the two support plates 21 move downward. When the die head 29 completes the stamping of the dumbbell plate, the stamping will push the adjusting column 27 upward, and the two support columns 28 will slide along one side of the arc groove 26. During the process of falling due to gravity, they will fall into the fixed circular plate 25 at the bottom along the arc groove 26 at the bottom, thereby ensuring that the die head 29 is adjusted. It should be understood that the adjustment through the nut 23 is to control the distance between the two fixed circular plates 25, so as to control the buffering time of the adjusting column 27.

[0021] like Figures 1 - 3As shown in the figure, a main body 11 is fixedly connected to the bottom of one side of the base 12 away from the four limit posts 13. A stamping assembly 3 is installed on one side of the top of the main body 11 away from the base 12. The stamping assembly 3 includes a plurality of hydraulic oil pipes 31. The output ends of two of the hydraulic oil pipes 31 are connected to a hydraulic cylinder 32, and the output end of the other hydraulic oil pipe 31 is fixedly connected to a stamping connection column 33. The relevant hydraulic components are arranged in the main body 11 and are transmitted through the hydraulic oil pipes 31 by a hydraulic pump arranged in the main body 11 in the prior art, so that the hydraulic cylinder 32 and the stamping connection column 33 are used in cooperation to complete the stamping of the dumbbell plates in the fitness equipment.

[0022] As Figures 5 - 6 As shown in the figure, an adaptation mechanism 4 is installed on one side of the stamping mechanism 2 close to the base 12 for stabilizing the stamping of the dumbbell plates. The adaptation mechanism 4 includes a plurality of limit bodies 44. A fitting groove 45 is provided at the bottom of the middle side of the four limit posts 13 for fitting the top arc edge of the dumbbell plates. A second spring 43 is installed on one side of each of the plurality of limit bodies 44 away from the corresponding fitting groove 45. A circular ring 41 is slidably connected to the outer walls of the plurality of limit bodies 44. A circumferential groove 42 is formed on one side of the outer wall of the circular ring 41 close to the second spring 43. The second springs 43 located inside the circumferential groove 42 of the plurality of limit bodies 44 are compressed by the stamping of the dumbbell plates. The width of one side of each of the plurality of limit bodies 44 away from the second spring 43 is narrower than that of the side close to the second spring 43 for limiting. When the dumbbell plates are placed, during the subsequent stamping process, the adaptation mechanism 4 can quickly fit the dumbbell plates during the stamping process, adapt to the sizes of different specifications of dumbbell plates, and center the dumbbell plates at the same time, making the stamping position accurate. Specifically, when the die head 29 contacts the dumbbell, at this time, the arc edges of the fitting grooves 45 between the two fixed circular plates 25 first contact the top edges of the dumbbell plates. At the same time, according to the specifications of the dumbbell plates, the limit bodies 44 will be extruded outward. Under the elastic potential energy of the second spring 43, a uniform force will be generated to center the stamping of the dumbbell plates.

[0023] As Figure 7As shown in the figure, a fixing mechanism 5 is installed inside the base 12 for positioning dumbbell plates in cooperation with a plurality of fitting grooves 45. The fixing mechanism 5 includes two threaded rods 52, and extrusion bodies 56 are threadedly connected to the outer walls of the two arc-shaped grooves 26. The hypotenuses on the opposite sides of the two extrusion bodies 56 are limited by corresponding fixing clips 58 for positioning dumbbell plates. The tops of the two threaded rods 52 are fixedly connected to a cylinder 51. Guide columns 53 are fixedly connected inside the base 12 away from the two extrusion bodies 56, and intermediate connectors 54 are installed in the middle of the two guide columns 53. A third spring 55 is fixedly connected to one side of each of the two fixing clips 58 close to the corresponding fixing clip 58. Adjustment grooves 57 are formed at the bottoms of the corresponding extrusion bodies 56 inside the base 12. Circular grooves 59 are formed on the opposite sides of the tops of the two fixing clips 58 for stamping in cooperation with the circular ring 41. By rotating the two threaded rods 52, the extrusion bodies 56 are driven to move downward to squeeze the corresponding fixing clips 58 to center the dumbbell plates. When the dumbbell plates are placed, as the stamping assembly 3 drives the adaptation mechanism 4 to move downward for stamping, during the downward movement, at this time, the fixing mechanism 5 will squeeze the dumbbell plates towards the middle as it descends, ensuring the stability of the dumbbell plates during stamping. At the same time, it can limit the dumbbell plates up and down with the adaptation mechanism 4, thereby ensuring the stamping quality. Specifically, at this time, one of the support plates 21 is rotationally connected to the threaded rod 52 connected to the two cylinders 51, thereby driving the threaded rod 52 to rotate, and at the same time driving the two extrusion bodies 56 to move downward. The hypotenuses of the two extrusion bodies 56 will gradually squeeze the fixing clips 58 towards the dumbbell plate end to move, realizing the centering positioning of the dumbbell plates, and at the same time compressing the third spring 55 between the two fixing clips 58 and the corresponding intermediate connectors 54. As the support plate 21 moves downward until the dumbbell plates are stamped, at the same time, the two fixing clips 58 squeeze the dumbbell plates to the center most. It should be understood that as the specifications of different dumbbell plates are different, if the dumbbell plates are smaller than the normal specifications, at this time, the stamping force needs to be reduced. Then one of the fixed circular plates 25 will move downward, and at the same time the stamping height is reduced. At this time, the horizontal planes of the two adjustment grooves 57 at the bottoms of the two extrusion bodies 56 are lower than the horizontal plane of the dumbbell plates, so the falling height of the extrusion bodies 56 can continue to decrease, and the fixing clips 58 can be continuously squeezed until the smaller-sized dumbbell plates are centered to ensure stability. At the same time, a plurality of limit bodies 44 are located inside. The circular grooves 59 are for cooperating with the circular ring 41 to ensure that the plurality of limit bodies 44 fit on the top of the dumbbell plates.

[0024] A stamping method for a stamping die for processing fitness equipment includes the following specific steps: Step 1: According to the size and production requirements of the dumbbell, first adjust the stamping die. Rotate the nut 23 with a wrench to make the two support plates 21 approach or move away from each other, thereby deforming the four first springs 24 to change the stamping force. At the same time, place the dumbbell plates between the two fixing clips 58, and then start the hydraulic cylinder 32. The stamping work is achieved through the combined action of the hydraulic oil pipe 31 and the stamping connection column 33. Step 2: When the piston end of the hydraulic cylinder 32 and the bottom of the stamping connection column 33 drive the two support plates 21 to press downwards, at this time, one of the support plates 21 is rotationally connected to the threaded rod 52 connected to the two cylinders 51, thereby driving the threaded rod 52 to rotate. At the same time, the two extrusion bodies 56 are driven to move downwards. The hypotenuses of the two extrusion bodies 56 will gradually squeeze the fixing clip 58 towards the dumbbell piece end to move, realizing the centering positioning of the dumbbell piece. At the same time, the third spring 55 between the two fixing clips 58 and the corresponding intermediate connecting body 54 is compressed. As the support plate 21 moves downwards until the dumbbell piece is stamped. At the same time, the two fixing clips 58 squeeze the dumbbell piece to the most central position. After the stamping is completed, under the action of the elastic potential energy of the multiple third springs 55, the fixing clip 58 returns to its original position; Step 3: During the stamping process of the dumbbell piece, when the die head 29 contacts the dumbbell, at this time, the arc edges of the fitting groove 45 between the two fixed circular plates 25 first contact the top edge of the dumbbell piece. At the same time, according to the specifications of the dumbbell piece, the limiting body 44 will be extruded towards the outer wall. Under the elastic potential energy of the second spring 43, a uniform force will be generated, enabling the dumbbell piece to be centered during stamping. At the same time, during stamping, the adjusting column 27 will be pushed upwards. The two support columns 28 will slide along one side of the arc-shaped groove 26 and fall into the fixed circular plate 25 at the bottom along the arc-shaped groove 26 at the bottom during the process of falling under gravity, thereby realizing the rotation of the direction.

[0025] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A stamping die for processing fitness equipment, comprising a base (12), characterized in that: The four corners of the top of the base (12) are fixedly connected to the limiting columns (13), and the outer walls of the four limiting columns (13) are all installed with a punching mechanism (2), and the punching mechanism (2) is installed with an adaption mechanism (4) on the side close to the base (12) for stably punching the dumbbell plate; The adapting mechanism (4) comprises a plurality of limiting bodies (44), and the plurality of limiting bodies (44) are located at the bottom of the central side of the four limiting columns (13) and are provided with a fitting groove (45) for fitting with the arc edge of the top of the dumbbell plate; A fixing mechanism (5) is installed inside the base (12) for cooperating with a plurality of fitting grooves (45) to position the dumbbell plates; The fixing mechanism (5) comprises two threaded rods (52), and the outer walls of the two arc-shaped grooves (26) are both threadedly connected with extrusion bodies (56), and the opposite side bevels of the two extrusion bodies (56) are limited by corresponding fixing clips (58) for positioning the dumbbell plates.

2. The fitness equipment processing stamping die according to claim 1, characterized in that: The bottom of the base (12) on one side away from the four limiting columns (13) is fixedly connected to the main body (11).

3. The fitness equipment processing stamping die according to claim 1, characterized in that: The punching mechanism (2) comprises two support plates (21) slidably connected to the outer walls of the four limit columns (13), and the two support plates (21) are fixedly connected to opposite sides thereof with fixed circular plates (25), and the two fixed circular plates (25) are provided with staggered arc grooves (26) on opposite sides thereof, and an adjusting column (27) is slidably connected to the center of the fixed circular plate (25) on one of the support plates (21), and the outer wall of the top of the adjusting column (27) is fixedly connected to two opposite support plates located in the recesses of the two arc grooves (26). A support column (28) is provided, and the inside of the two support plates (21) is slidably connected with adjustment bolts (22) around the sides away from the fixed circular plate (25). The outer walls of the four adjustment bolts (22) are all threadedly connected with nuts (23) for adjusting the distance between the two fixed circular plates (25) to control the punching force. The outer walls of the four adjustment bolts (22) are located between the two support plates (21) and are fixedly connected with a first spring (24). The side of the adjustment column (27) away from the support plate (21) is fixedly connected with a die head (29).

4. The fitness equipment processing stamping die according to claim 3, characterized in that: The limiting rings on the side of the two support plates (21) away from the fixed circular plate (25) are threadedly connected to the threaded rod (52), and the die head (29) is pressed to the concave part of the top arc groove (26) and falls to the concave part of the bottom arc groove (26).

5. The fitness equipment processing stamping die according to claim 2, characterized in that: A stamping assembly (3) is installed on the top of the main body (11) at a side away from the base (12), and the stamping assembly (3) comprises a plurality of hydraulic oil pipes (31), wherein the output ends of two of the hydraulic oil pipes (31) are connected to hydraulic cylinders (32), and the output end of another of the hydraulic oil pipes (31) is fixedly connected to a stamping connection column (33).

6. The fitness equipment processing stamping die according to claim 1, characterized in that: A second spring (43) is installed on the side of the plurality of limiting bodies (44) away from the corresponding fitting groove (45), and the outer walls of the plurality of limiting bodies (44) are slidably connected to a circular ring (41), and a circumferential groove (42) is formed on the outer wall of the circular ring (41) close to the second spring (43).

7. The fitness equipment processing stamping die according to claim 6, characterized in that: The plurality of limiting bodies (44) are pressed by the dumbbell plate to press the second spring (43) located inside the circumferential groove (42); the width of the plurality of limiting bodies (44) on the side away from the second spring (43) is narrower than that on the side close to the second spring (43), and are used for limiting.

8. The fitness equipment processing stamping die according to claim 6, characterized in that: The tops of the two threaded rods (52) are fixedly connected with a cylinder (51), the inside of the base (12) away from the two extrusion bodies (56) are fixedly connected with guide pillars (53), and the middle ends of the two guide pillars (53) are installed with intermediate connecting bodies (54), the two fixing clamps (58) are fixedly connected with a third spring (55) on one side close to the corresponding fixing clamp (58), the inside of the base (12) is provided with an adjustment groove (57) at the bottom of the corresponding extrusion body (56), and the tops of the two fixing clamps (58) are provided with circular grooves (59) on opposite sides thereof for fitting with the circular ring (41) to complete the stamping.

9. The fitness equipment processing stamping die according to claim 8, characterized in that: The two threaded rods (52) are rotated to drive the extrusion body (56) to move downward to extrude the corresponding fixing clip (58) to center the dumbbell plate.

10. A stamping method for a fitness equipment stamping die according to claims 1-9, comprising the following specific steps: Step 1: According to the size of the dumbbell and production requirements, first adjust the stamping die, turn the nut (23) with a wrench to make the two support plates (21) approach or move away, thereby causing the four first springs (24) to deform, thereby changing the stamping force, and at the same time place the dumbbell plate between the two fixing clamps (58), then start the hydraulic cylinder (32), and the hydraulic oil pipe (31) and the stamping connecting column (33) work together to achieve the stamping work; Step 2: When the piston end of the hydraulic cylinder (32) and the bottom of the punching connection column (33) drive the two support plates (21) to punch downward, one of the support plates (21) is connected to the threaded rod (52) connected to the two cylinders (51) and is rotatably connected, thereby driving the threaded rod (52) to rotate and driving the two extrusion bodies (56) to move downward. The oblique sides of the two extrusion bodies (56) gradually squeeze the fixed clamp (58) toward the end of the dumbbell piece to move, so as to achieve the center positioning of the dumbbell piece, and at the same time compress the third spring (55) between the two fixed clamps (58) and the corresponding intermediate connecting body (54). As the support plate (21) moves downward, until the dumbbell piece is punched, at the same time, the two fixed clamps (58) squeeze the dumbbell piece to the center. After the punching is completed, under the action of the elastic potential energy of the multiple third springs (55), the fixed clamp (58) returns to its position; Step 3: During the punching process of the dumbbell plate, when the die head (29) contacts the dumbbell, the arc edge of the fitting groove (45) between the two fixed circular plates (25) first contacts the top edge of the dumbbell plate. At the same time, according to the specifications of the dumbbell plate, the limiting body (44) will be pressed toward the outer wall. Under the elastic potential energy of the second spring (43), a force will be uniformly generated, so that the dumbbell plate is punched in the center. At the same time, the punching will push the adjustment column (27) upward, and the two support columns (28) will slide along one side of the arc groove (26). In the process of falling due to gravity, they will fall into the fixed circular plate (25) at the bottom along the arc groove (26) at the bottom, thereby realizing the rotation of the direction.

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