Dumbbell piece adjustable stamping device

Abstract

The invention discloses a dumbbell piece adjustable stamping device, and belongs to the technical field of dumbbell piece manufacturing, the dumbbell piece adjustable stamping device comprises a workbench, a lower die is fixedly mounted on the workbench, an adjusting assembly is arranged on the lower die, a frame body is fixedly mounted on the top wall of the workbench, and electric push rods with downward output ends are uniformly and fixedly mounted on the frame body; a mounting plate is fixedly mounted at the output end of the electric push rod, and a stamping assembly is arranged on the mounting plate. The stamping assembly comprises a hollow stamping column fixedly mounted on the bottom wall of the mounting plate, and a discharging assembly matched with the stamping column is arranged on the workbench. According to the scheme, when the stamping assembly is arranged and the electric push rod drives the stamping column to move downwards, concave circular groove stamping, outer edge cutting and convex column pipe cutting procedures of a metal plate can be completed at a time, positioning deviation and efficiency loss caused by multi-procedure step-by-step machining are avoided, the product forming consistency is effectively improved, the follow-up finishing procedure is reduced, and the production efficiency is improved. And the effect of improving the punching efficiency is achieved.

Description

Technical Field

[0001] This invention relates to the field of dumbbell plate manufacturing technology, and more specifically, to an adjustable dumbbell plate stamping device. Background Technology

[0002] Dumbbell plates are an important component of dumbbells. They are usually fitted onto both ends of the dumbbell bar to increase the weight of the dumbbell and meet the needs of strength training at different intensities.

[0003] Composite material dumbbell plates: These typically consist of a plastic shell filled with metal particles, making them lightweight, portable, and brightly colored. However, their load-bearing capacity is relatively weak, so they must be protected from drops. To improve the load-bearing capacity of dumbbell plates, most existing shells are made of metal. This involves placing a metal sheet on a punch press and using a stamping die to process it into the required patterns and shapes, such as circles and polygons. Therefore, in the manufacturing of composite material dumbbell plates, the forming of the central metal inner liner often faces the problem of separating the 'outer circle punching' and 'inner hole flanging' processes, resulting in poor coaxiality and significantly affecting the production efficiency of dumbbell plates.

[0004] To address the aforementioned issues, existing technologies have provided some solutions. For example, Chinese invention patent CN116748898B discloses an adjustable dumbbell plate stamping device. This device successfully achieves controllable adjustment of the thickness of the stamped concave groove by adjusting the distance between the upper surface of the external threaded ring block and the upper surface of the bottom support plate. Furthermore, through the first stamping, it successfully stamps the metal plate into a concave groove with a central protrusion, and through the second stamping, it successfully cuts the protrusion on the concave groove into a protruding tube, greatly improving the stamping efficiency. Although existing technologies can improve stamping efficiency to a certain extent, they require time for secondary stamping and cannot form the shape in one stamping, thus seriously affecting stamping efficiency. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide an adjustable dumbbell plate stamping device that can improve stamping efficiency.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] An adjustable dumbbell plate stamping device includes a worktable, a lower die fixedly mounted on the worktable, an adjustment component on the lower die, a frame fixedly mounted on the top wall of the worktable, and electric push rods with downward output ends evenly fixedly mounted on the frame. A mounting plate is fixedly mounted on the output end of the electric push rods, and a stamping component is provided on the mounting plate. The stamping assembly includes a hollow stamping column fixedly mounted on the bottom wall of the mounting plate. A first cutting ring is threaded onto the stamping column, and a second cutting ring is vertically slidably mounted on the stamping column. A horizontal rod fixedly connected to the second cutting ring is vertically slidably mounted on the stamping column. A connecting ring is rotatably mounted on the first cutting ring, and the connecting ring is fixedly connected to the end of the horizontal rod away from the second cutting ring. A waste processing assembly is provided on the second cutting ring. A driving assembly is provided between the mounting plate and the frame. The driving assembly is connected to a collection assembly and a discharge assembly set on the worktable via an air circuit.

[0008] Furthermore, the waste treatment assembly includes a magnetic ring fixedly installed inside the second cutting ring, and a peeling vertical rod extending into the second cutting ring is fixedly installed on the bottom wall of the frame. The magnetic ring is configured to: descend with the second cutting ring during the stamping process and magnetically attract and cut the metal waste generated during the cutting process; The peeling vertical rod is configured such that when the second cutting ring moves upward and resets, its bottom end extends into the second cutting ring and abuts against the waste material, forcing the waste material to overcome the magnetic attraction force, detach from the magnet ring, and fall towards the downward collection assembly.

[0009] Furthermore, the collection assembly includes a first collection box installed on a workbench, a vertical plate fixedly installed on the top wall of the workbench, a pneumatic spring telescopic rod fixedly installed on the side wall of the vertical plate, an installation rod fixedly installed on the output end of the pneumatic spring telescopic rod, a support plate fixedly installed on the top wall of the workbench, a ball bearing fixedly installed on the installation rod, and a collection plate rotatably mounted on the ball bearing that slides with the support plate, and a collection groove is formed on the collection plate.

[0010] Furthermore, the drive assembly includes a metal airbag fixedly installed between the top wall of the mounting plate and the frame. An air inlet valve with its input end connected to the outside is inserted into the metal airbag. An exhaust valve is inserted into the metal airbag. A first air pipe is fixedly installed on the output end of the exhaust valve. A second air pipe is fixedly installed on the input end of the pneumatic spring telescopic rod. A pressure relief assembly is provided on the frame, and the first air pipe and the second air pipe are connected through the pressure relief assembly.

[0011] Furthermore, the unloading assembly includes a second collection box installed on the workbench, a linkage plate fixedly installed on the collection plate, and a collection hole that cooperates with the stripping vertical rod on the linkage plate. A push ring is vertically slidably installed on the stamping column, and a second spring is installed between the push ring and the stamping column. A push rod is fixedly installed on the top wall of the stamping column.

[0012] Furthermore, the pressure relief assembly includes a horizontal plate that is horizontally slidably mounted on the frame, the horizontal plate having an inclined groove that cooperates with the push rod, and a third spring being installed between the horizontal plate and the frame, the horizontal plate having an air groove that communicates with the first air pipe, and a pressure relief pipe that communicates with the air groove being fixedly installed on the frame.

[0013] Furthermore, the adjustment assembly includes a disc that is threadedly engaged with the lower mold, and a central column is threadedly mounted on the disc. Both the disc and the central column are fixedly fitted with adjustment knobs.

[0014] Furthermore, a storage box is fixedly installed on the lower mold, and the storage box is filled with lubricating fluid. A lubrication cavity is opened on the lower mold, and atomizing holes are evenly opened on the lubrication cavity. A lubrication pipe extending into the storage box is inserted into the lubrication cavity, and the end of the pressure relief pipe away from the horizontal plate extends into the storage box.

[0015] Furthermore, a round rod that mates with a collection tray is rotatably mounted on the top wall of the support plate, a first support rod is fixedly mounted on the frame, and a second support rod is fixedly mounted on the first support rod.

[0016] Furthermore, a counterweight is fixedly installed on the linkage plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By setting up a stamping assembly, when the electric push rod drives the stamping column downward, the concave groove stamping, outer edge cutting and convex column cutting processes of the metal plate can be completed in one go, avoiding the positioning deviation and efficiency loss caused by multi-process step-by-step processing, effectively improving the consistency of product forming, reducing subsequent finishing processes, and playing the role of improving stamping efficiency. (2) This solution sets up a waste processing component. After the dumbbell plate shell is cut, the magnetic ring can attract the cutting waste. Then, the stripping vertical rod pushes the waste away from the magnetic ring when the stamping component is reset. The waste is automatically collected in conjunction with the collection component. The unloading component is linked with the drive component and the pressure relief component. The formed dumbbell plate can be automatically separated from the stamping column. The finished product is collected through the linkage plate and the second collection box. The whole process does not require manual picking of waste and finished products, avoiding the efficiency bottleneck and safety hazards caused by manual operation, and further improving the stamping efficiency. (3) This solution opens a lubrication chamber and a pressure relief pipe to introduce airflow into the storage box. It also uses air pressure to spray lubricant evenly into the lower mold cavity through the lubrication pipe, lubrication chamber and atomization hole, thereby avoiding the dumbbell plate shell after molding from being adsorbed in the lower mold cavity, which would prevent the stamping column from lifting the dumbbell plate shell and affecting the unloading efficiency, thus further improving the stamping efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the frame, metal airbag, mounting plate, and stamping column of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a sectional view of the frame, mounting plate, stamping column, horizontal plate, and push ring of the present invention; Figure 5 For the present invention Figure 4 Enlarged view at point B; Figure 6 This is an assembly diagram of the workbench, lower mold, collection plate, and storage box of the present invention; Figure 7 For the present invention Figure 6 Enlarged view at point C; Figure 8 This is a combined diagram of the collecting plate, the first support rod, and the second support rod of the present invention; Figure 9 This is a combination diagram of the pneumatic spring telescopic rod, mounting rod, and ball bearings of the present invention; Figure 10 This is a schematic diagram of the product structure of the present invention.

[0019] Explanation of the labels in the diagram: 101. Workbench; 102. Lower mold; 103. Frame; 104. Electric push rod; 105. Mounting plate; 2. Stamping assembly; 201. Stamping column; 202. First cutting ring; 203. Second cutting ring; 204. Horizontal bar; 205. Connecting ring; 3. Waste processing components; 301. Magnetic ring; 302. Stripping vertical bar; 4. Collection components; 401. First collection box; 402. Vertical plate; 403. Pneumatic spring telescopic rod; 404. Mounting rod; 405. Support plate; 406. Ball bearing; 407. Collection plate; 408. Collection trough; 5. Drive assembly; 501. Metal airbag; 502. Intake valve; 503. Exhaust valve; 504. First air pipe; 505. Second air pipe; 6. Unloading assembly; 601. Second collection box; 602. Linkage plate; 603. Collection hole; 604. Push ring; 605. Second spring; 606. Push rod; 7. Pressure relief assembly; 701. Horizontal plate; 702. Third spring; 703. Air groove; 704. Inclined groove; 705. Pressure relief pipe; 8. Adjustment components; 801. Disc; 802. Central column; 803. Adjustment knob; 901. Storage box; 902. Lubrication chamber; 903. Atomizing hole; 904. Lubrication pipe; 11. Round rod; 12. First support rod; 13. Second support rod; 14. Counterweight. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0021] Please see Figures 1 to 10 An adjustable dumbbell plate stamping device includes a worktable 101, a lower mold 102 fixedly installed on the worktable 101, an adjustment component 8 provided on the lower mold 102, a frame 103 fixedly installed on the top wall of the worktable 101, electric push rods 104 with downward output ends evenly fixedly installed on the frame 103, an mounting plate 105 fixedly installed on the output end of the electric push rods 104, and a stamping component 2 provided on the mounting plate 105; The stamping assembly 2 includes a hollow stamping column 201 fixedly installed on the bottom wall of the mounting plate 105, and a material unloading assembly 6 that cooperates with the stamping column 201 is provided on the workbench 101. A first cutting ring 202 is threadedly installed on the stamping column 201, and a second cutting ring 203 is vertically slidably installed on the stamping column 201. A horizontal rod 204 fixedly connected to the second cutting ring 203 is vertically slidably installed on the stamping column 201. A connecting ring 205 is rotatably installed on the first cutting ring 202, and the connecting ring 205 is fixedly connected to the end of the horizontal rod 204 away from the second cutting ring 203. A waste processing assembly is provided on the second cutting ring 203. A driving assembly 5 is provided between the mounting plate 105 and the frame 103. The driving assembly 5 is connected to the collection assembly 4 and the material unloading assembly 6 on the workbench through an air passage.

[0022] The waste treatment assembly includes a magnet ring 301 fixedly installed inside the second cutting ring 203, and a peeling vertical rod 302 extending into the second cutting ring 203 is fixedly installed on the bottom wall of the frame 103. The magnetic ring 301 is configured to: descend with the second cutting ring 203 during the stamping process and magnetically adsorb the metal waste generated during cutting; The peeling vertical rod 302 is configured such that when the second cutting ring 203 moves upward and resets, its bottom end extends into the second cutting ring 203 and abuts against the waste material, forcing the waste material to overcome the magnetic attraction force, detach from the magnet ring 301, and fall towards the downward collection assembly 4.

[0023] During stamping, the operator can first adjust the cavity size of the lower die 102 using the adjusting component 8 to stamp out the required dumbbell plates. After adjusting the lower die 102, the operator can rotate the first cutting ring 202. During the movement of the first cutting ring 202, the horizontal rod 204 drives the second cutting ring 203 to move, thereby adjusting the first cutting ring 202 and the second cutting ring 203 to the appropriate positions. Then, the metal plate is placed on the worktable 101 directly below the stamping column 201. Then, the output end of the electric push rod 104 extends and drives the mounting plate 105 to move downwards. During the downward movement, the stamping column 201 moves downward and gradually comes into contact with the metal plate, stamping the metal plate to form a concave circular groove with a central protrusion. At the same time, the stamping column 201 moves downward, causing the first cutting ring 202 and the second cutting ring 203 to move downward. The first cutting ring 202 can cut the stamped metal plate, and the second cutting ring 203 can cut the protrusion on the concave circular groove into a protruding tube during its downward movement. This allows for stamping in one step, improving stamping efficiency.

[0024] During the cutting process of the second cutting ring 203 on the protruding post in the concave groove, the cut waste gradually comes into contact with the magnetic ring 301. After the cutting is completed, the output end of the electric push rod 104 retracts and drives the mounting plate 105 to move upward. During the upward movement of the mounting plate 105, the stamping column 201 moves upward, and during the upward movement of the stamping column 201, the second cutting ring 203 moves upward. During the upward movement of the second cutting ring 203, the magnetic ring 301 drives the waste to move upward. As the mounting plate 105 drives the stamping column 201 to move upward, the peeling vertical rod 302 gradually enters the second cutting ring 203. Then, the peeling vertical rod 302 gradually comes into contact with the waste and drives the waste to move downward. During the downward movement of the waste, it gradually moves away from the magnetic ring 301. At this time, the attraction of the magnetic ring 301 to the waste gradually decreases. Then, under the action of gravity, the waste gradually falls into the collection component 4, which makes it easier for the user to handle the waste and further improves the stamping efficiency.

[0025] like Figures 1 to 6As shown, the collection assembly 4 includes a first collection box 401 installed on a workbench 101. A vertical plate 402 is fixedly installed on the top wall of the workbench 101. A pneumatic spring telescopic rod 403 is fixedly installed on the side wall of the vertical plate 402. An installation rod 404 is fixedly installed on the output end of the pneumatic spring telescopic rod 403. A support plate 405 is fixedly installed on the top wall of the workbench 101. A ball bearing 406 is fixedly installed on the installation rod 404. A collection plate 407 that slides with the support plate 405 is rotatably installed on the ball bearing 406. A collection groove 408 is provided on the collection plate 407.

[0026] The drive assembly 5 includes a metal airbag 501 fixedly installed between the top wall of the mounting plate 105 and the frame 103. An air inlet valve 502 with its input end connected to the outside is inserted into the metal airbag 501. An exhaust valve 503 is inserted into the metal airbag 501. A first air pipe 504 is fixedly installed on the output end of the exhaust valve 503. A second air pipe 505 is fixedly installed on the input end of the pneumatic spring telescopic rod 403. The frame 103 is provided with a pressure relief assembly 7, and the first air pipe 504 and the second air pipe 505 are connected through the pressure relief assembly 7.

[0027] By adopting the above technical solution, during the downward movement of the mounting plate 105, the metal airbag 501 draws air from the outside through the air inlet valve 502. Then, during the upward movement of the mounting plate 105, the airflow inside the metal airbag 501 flows through the exhaust valve 503, the first air pipe 504, and the pressure relief assembly 7 to the second air pipe 505, and then through the second air pipe 505 to the pneumatic spring telescopic rod 403. The output end of the second pneumatic spring telescopic rod 403 extends and drives the collecting plate 407 to move through the mounting rod 404 and the ball bearing 406. After the bottom wall of the stamping column 201 is higher than the collecting plate 407, the collecting plate 407 gradually moves to directly below the stamping column 201. When the pneumatic spring telescopic rod 403 reaches its maximum extension, the collecting plate 407 is located directly below the stamping column 201, and at this time, the weight of the waste material itself is greater than that of the magnetic ring 301. The suction force draws the waste material into the top wall of the collection plate 407. As the mounting plate 105 continues to move upward, the pressure relief assembly 7 connects the second air pipe 505 to the outside. At this time, the output end of the pneumatic spring telescopic rod 403 retracts and drives the mounting rod 404 to reset. During the reset of the mounting rod 404, the collecting plate 407 is reset via the ball bearing 406. During the reset of the collecting plate 407, the weight on the side of the support plate 405 closer to the first collection box 401 gradually increases to the weight on the side of the support plate 405 farther from the first collection box 401. Then, the support plate 405 gradually rotates around the ball bearing 406 and tilts. At this time, the waste material slides down the slope of the collecting plate 407 and enters the first collection box 401 through the collection groove 408. This eliminates the need for users to spend time processing the waste material, further improving the stamping efficiency.

[0028] like Figures 1 to 8 As shown, the unloading assembly 6 includes a second collection box 601 installed on the workbench 101, a linkage plate 602 fixedly installed on the collection plate 407, and a collection hole 603 that cooperates with the stripping vertical rod 302 on the linkage plate 602. A push ring 604 is vertically slidably installed on the stamping column 201. A second spring 605 is installed between the push ring 604 and the stamping column 201. A push rod 606 is fixedly installed on the top wall of the stamping column 201.

[0029] The pressure relief assembly 7 includes a horizontal plate 701 that is horizontally slidably mounted on the frame 103. The horizontal plate 701 has a slanted groove 704 that cooperates with the push rod 606. A third spring 702 is installed between the horizontal plate 701 and the frame 103. The horizontal plate 701 has an air groove 703 that communicates with the first air pipe 504. A pressure relief pipe 705 that communicates with the air groove 703 is fixedly installed on the frame 103.

[0030] By adopting the above technical solution, when the mounting plate 105 drives the stamping column 201 to stamp the metal plate, the top wall of the push ring 604 is in close contact with the stamping column 201, and at this time the bottom wall of the push ring 604 is flush with the bottom wall of the stamping column 201. Then, as the mounting plate 105 drives the stamping column 201 to move upward, the stamping column 201 will drive the dumbbell plate shell that has finished stamping to move upward, and at the same time, the push ring 604 will drive the push rod 606 to move upward, and in the collection... When plate 407 moves the linkage plate 602 to directly below the stamping column 201, the push rod 606 contacts the inclined surface of the horizontal plate 701. Then, the horizontal plate 701 drives the push rod 606 and the push ring 604 to move downwards synchronously. During the downward movement of the push ring 604, the dumbbell plate shell moves downwards. After the waste material falls through the collection hole 603 onto the top wall of the collection plate 407, the dumbbell plate shell gradually loses contact with the stamping column 201 and falls onto the linkage plate 602. On the top wall, after the dumbbell plate shell disengages from the stamping column 201, the third spring 702 assembly reaches its maximum extension. At this point, the third spring 702 cannot move further downward, meaning the push rod 606 cannot move further. Then, although the push rod 606 continues to move upward, it drives the horizontal rod 204 to move horizontally through the inclined surface of the horizontal plate 701. During the horizontal movement of the horizontal rod 204, the pressure relief groove and pressure relief pipe 705 are connected. At this time, the airflow in the pneumatic spring telescopic rod 403 flows to the outside through the second air pipe 505, the pressure relief groove, and the pressure relief pipe 705. At this time, the pneumatic spring telescopic rod 403 drives the collecting plate 407 and the linkage plate 602 to reset. During the rotation and tilting of the collecting plate 407 around the ball 406, the linkage plate 602 is tilted. At this time, the dumbbell plate shell enters the second collecting box 601 through the inclined surface of the linkage plate 602, thus automatically completing the unloading and further improving the stamping efficiency.

[0031] like Figure 5 , Figure 6 As shown, the adjustment component 8 includes a disc 801 that is threadedly engaged with the lower mold 102, and a central column 802 is threadedly mounted on the disc 801. Both the disc 801 and the central column 802 are fixedly mounted with adjustment knobs 803.

[0032] A storage box 901 is fixedly installed on the lower mold 102, and the storage box 901 is filled with lubricating fluid. A lubrication cavity 902 is opened on the lower mold 102, and atomizing holes 903 are evenly opened on the lubrication cavity 902. A lubrication tube 904 extending into the storage box 901 is inserted into the lubrication cavity 902. The end of the pressure relief tube 705 away from the horizontal plate 701 extends into the storage box 901.

[0033] By adopting the above technical solution, when it is necessary to adjust the forming size of the dumbbell plate shell, the user can first drive the disc 801 to rotate by adjusting the knob 803, thereby adjusting the distance between the top wall of the disc 801 and the top wall of the worktable 101, and thus adjusting the size of the dumbbell plate shell. After the disc 801 is adjusted, the user can adjust the height of the central column 802 by adjusting the knob 803 which is fixedly connected to the central column 802, thereby ensuring that the top wall of the central column 802 is flush with the top wall of the worktable 101, which makes it easier for the user to adjust the size of the dumbbell plate shell and further improves the stamping efficiency.

[0034] After the airflow passes through the pressure relief groove and flows to the pressure relief pipe 705, the airflow then flows through the pressure relief pipe 705 into the storage box 901. Specifically, the storage box 901 is a sealed structure. When high-pressure gas is introduced through the pressure relief pipe 705, the internal air pressure of the storage box 901... It rises rapidly, making it greater than the external atmospheric pressure. According to the principles of fluid mechanics, this pressure difference drives the lubricating fluid to rise along the lubrication pipe 904: .in, For the density of the lubricating fluid, It is the acceleration due to gravity. To raise the liquid level, This refers to the pressure loss of the lubricating fluid during its flow within the lubrication pipe. After being forced into the lubrication chamber 902, the lubricating fluid mixes with the high-speed escaping residual gas at the atomizing hole 903. Due to the extremely small aperture of the atomizing hole 903, the liquid is broken into micron-sized droplets under the shearing action of the high-speed airflow, forming an aerosol cone that evenly covers the inner wall of the lower mold 102. This achieves demolding lubrication without affecting stamping accuracy. Then, the pressure inside the storage box 901 increases, and under the action of the pressure, the lubricating fluid in the storage box 901 flows through the lubrication pipe 904 into the lubrication chamber 902, and is evenly sprayed into the mold cavity of the lower mold 102 through the atomizing hole 903 on the lubrication chamber 902. This prevents the formed dumbbell plate shell from adhering to the mold cavity of the lower mold 102, which would prevent the stamping column 201 from being unable to lift the dumbbell plate shell and affect the unloading efficiency, further improving the stamping efficiency.

[0035] like Figure 6 , Figure 8 As shown, a round rod 11 that cooperates with the collection tray is rotatably installed on the top wall of the support plate 405, a first support rod 12 is fixedly installed on the frame 103, and a second support rod 13 is fixedly installed on the first support rod 12.

[0036] A counterweight 14 is fixedly installed on the linkage plate 602.

[0037] By adopting the above technical solution, during the process of the pneumatic spring telescopic rod 403 extending at the output end and driving the collection plate 407 to move, the friction between the collection plate 407 and the support plate 405 can be reduced by setting the round rod 11, thereby facilitating the movement and rotation of the collection plate 407. Furthermore, by setting the first support rod 12 and the second support rod 13, when the collection plate 407 is in a horizontal state, the first support rod 12 and the second support rod 13 can support the bottom wall of the collection plate 407 near the ball bearing 406, thereby preventing the dumbbell plate shell from falling onto the top wall of the linkage plate 602, which would cause the collection plate 407 to flip upwards and cause the dumbbell plate shell to fall off, affecting the stamping efficiency. In addition, the setting of the counterweight block 14 can prevent the collection plate 407 from flipping upwards, and when the pneumatic spring telescopic rod 403 drives the collection plate 407 to reset, it can increase the weight of the collection plate 407 near the first collection box 401, thereby ensuring that the collection plate 407 rotates downwards, thus ensuring normal collection of dumbbell plate shells and waste materials.

[0038] Instructions for use: During stamping, first place the metal plate to be stamped stably on the worktable 101 directly below the stamping column 201. Turn on the electric push rod 104. The output end of the electric push rod 104 extends, driving the mounting plate 105 and the stamping assembly 2 downward as a whole. The stamping column 201 first contacts the metal plate and completes the concave circular groove stamping. Then, the first cutting ring 202 cuts the outer edge of the metal plate, and the second cutting ring 203 simultaneously cuts the central convex column into a convex tube.

[0039] During waste collection, after stamping, the output end of the electric push rod 104 retracts, driving the mounting plate 105 and stamping assembly 2 upwards. Simultaneously, the stamping column 201 drives the formed dumbbell plate upwards. At the same time, the magnetic ring 301 attracts waste as it rises with the second cutting ring 203. During the upward movement of the stamping assembly 2, the peeling vertical rod 302 on the frame 103 extends into the second cutting ring 203, pushing the waste away from the magnetic ring 301. Simultaneously, the metal airbag 501 exhausts air, driving the pneumatic spring telescopic rod 403 to extend and move the collection plate 407 directly below the stamping column 201. The waste falls into the collection groove 408 of the collection plate 407 under gravity. Then, the pressure relief assembly 7 activates, the pneumatic spring telescopic rod 403 retracts, causing the collection plate 407 to reset. Due to the counterweight 14, the collection plate 407 tilts towards the first collection box 401, causing the waste to slide down the slope into the first collection box 401.

[0040] During unloading, the collecting plate 407 moves synchronously, driving the linkage plate 602 to move as well. Then, the push rod 606 contacts the inclined surface of the horizontal plate 701 and drives the push ring 604 to move downward, pushing the formed dumbbell piece out from the stamping column 201 and causing the dumbbell piece to fall onto the linkage plate 602. Then, when the collecting plate 407 returns to its original tilt, the linkage plate 602 tilts synchronously, and the dumbbell piece slides into the second collecting box 601, completing the collection of finished products.

[0041] Finally, the above feeding, stamping, and unloading process is repeated to achieve continuous processing of multiple dumbbell plates. During the processing, the pressure relief pipe 705 continuously introduces airflow into the storage box 901, and the lubricant is automatically sprayed into the mold cavity through the atomizing hole 903 to ensure smooth unloading.

[0042] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A press device for adjustable dumbbells comprising a worktable (101), characterized in that: The workbench (101) is fixedly installed with a lower mold (102), the lower mold (102) is provided with an adjusting assembly (8), the top wall of the workbench (101) is fixedly installed with a frame body (103), the frame body (103) is uniformly fixedly installed with an electric push rod (104) with the output end downward, the output end of the electric push rod (104) is fixedly installed with a mounting plate (105), and the mounting plate (105) is provided with a stamping assembly (2); The stamping assembly (2) comprises a hollow stamping column (201) fixedly installed on the bottom wall of the mounting plate (105), a first cutting ring (202) threadedly installed on the stamping column (201), a second cutting ring (203) vertically and slidingly installed on the stamping column (201), a horizontal rod (204) vertically and slidingly installed on the stamping column (201) and fixedly connected with the second cutting ring (203), a connecting ring (205) rotatably installed on the first cutting ring (202) and fixedly connected with the end of the horizontal rod (204) away from the second cutting ring (203), and a waste treatment assembly provided on the second cutting ring (203), wherein the mounting plate (105) and the frame body (103) are provided with a driving assembly (5), and the driving assembly (5) is connected with a collecting assembly (4) and a discharging assembly (6) arranged on the workbench through an air circuit.

2. A dumbbell plate adjustable press according to claim 1, wherein: The waste treatment assembly comprises a magnet ring (301) fixedly installed in the second cutting ring (203), and a stripping vertical rod (302) fixedly installed on the bottom wall of the frame body (103) and extending into the second cutting ring (203). The magnet ring (301) is configured to descend with the second cutting ring (203) during stamping and magnetically attract the metal waste generated by cutting; The stripping vertical rod (302) is configured to extend into the second cutting ring (203) and abut against the waste when the second cutting ring (203) ascends to reset, so as to force the waste to overcome the magnetic attraction and fall to the collecting assembly (4) below.

3. A dumbbell plate adjustable press according to claim 2, wherein: The collecting assembly (4) comprises a first collecting box (401) arranged on the workbench (101), a vertical plate (402) fixedly installed on the top wall of the workbench (101), a pneumatic spring telescopic rod (403) fixedly installed on the side wall of the vertical plate (402), an installation rod (404) fixedly installed on the output end of the pneumatic spring telescopic rod (403), a support plate (405) fixedly installed on the top wall of the workbench (101), a ball (406) fixedly installed on the installation rod (404), and a collecting plate (407) rotatably installed on the ball (406) and slidingly matched with the support plate (405), wherein a collecting groove (408) is formed in the collecting plate (407).

4. A dumbbell plate adjustable press according to claim 3, wherein: The driving assembly (5) comprises a metal air bag (501) fixedly installed between the top wall of the mounting plate (105) and the frame body (103), an air inlet valve (502) communicating with the outside is inserted on the metal air bag (501), an air outlet valve (503) is inserted on the metal air bag (501), a first air pipe (504) is fixedly installed on the output end of the air outlet valve (503), a second air pipe (505) is fixedly installed on the input end of the pneumatic spring telescopic rod (403), the frame body (103) is provided with a pressure relief assembly (7), and the first air pipe (504) and the second air pipe (505) communicate through the pressure relief assembly (7).

5. A dumbbell plate adjustable press according to claim 4, wherein: The discharging assembly (6) comprises a second collecting box (601) installed on the workbench (101), a linkage plate (602) is fixedly installed on the collecting plate (407), a collecting hole (603) matched with the stripping vertical rod (302) is formed in the linkage plate (602), a push ring (604) is vertically and slidingly installed on the stamping column (201), a second spring (605) is jointly installed between the push ring (604) and the stamping column (201), and a pushing rod (606) is fixedly installed on the top wall of the stamping column (201).

6. A dumbbell plate adjustable press according to claim 5, wherein: The pressure relief assembly (7) comprises a horizontal plate (701) horizontally and slidingly installed on the frame body (103), an inclined groove (704) matched with the pushing rod (606) is formed in the horizontal plate (701), a third spring (702) is jointly installed between the horizontal plate (701) and the frame body (103), an air groove (703) communicating with the first air pipe (504) is formed in the horizontal plate (701), and a pressure relief pipe (705) communicating with the air groove (703) is fixedly installed on the frame body (103).

7. The adjustable dumbbell press apparatus of claim 1, wherein: The adjusting assembly (8) comprises a disc (801) threadedly matched with the lower die (102), a center column (802) is threadedly installed on the disc (801), and adjusting knobs (803) are fixedly installed on the disc (801) and the center column (802).

8. A dumbbell plate adjustable press according to claim 6, wherein: The lower die (102) is fixedly installed with a storage box (901), lubricating liquid is contained in the storage box (901), a lubricating cavity (902) is formed in the lower die (102), atomizing holes (903) are uniformly formed in the lubricating cavity (902), a lubricating pipe (904) extending into the storage box (901) is inserted in the lubricating cavity (902), and one end of the pressure relief pipe (705) extending away from the horizontal plate (701) extends into the storage box (901).

9. The adjustable dumbbell press apparatus of claim 3, wherein: A circular rod (11) matched with the collecting disc is rotatably installed on the top wall of the supporting plate (405), a first supporting rod (12) is fixedly installed on the frame body (103), and a second supporting rod (13) is fixedly installed on the first supporting rod (12).

10. The adjustable dumbbell press apparatus of claim 5, wherein: A counterweight (14) is fixedly installed on the linkage plate (602).

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