Chain link section burr-free blanking device

Abstract

The utility model relates to chain piece blanking technology field, concretely relates to a chain piece section no burr blanking device, including bottom plate, still including the workstation that bottom plate's top surface fixedly connected, the side surface of workstation is equipped with fixed component, the fixed component includes secondary support board, the secondary support board fixedly connected in the top side of workstation, the secondary support board is common two, and the two secondary support boards are rotatably connected with connecting rod between, the outside both ends of connecting rod are fixedly connected with special-shaped pressure rod, the outside median position of connecting rod is fixedly connected with gear ring, the side surface fixedly connected with main support board of workstation, through the linkage structure of motor drive gear, gear ring, connecting rod and special-shaped pressure rod, make the blanking lower die can be stabilized and compacted, and the situation that will not produce the deviation because of the effect of blanking force in the blanking process, ensure that the blanking upper die and blanking lower die always keep accurate cooperation position, thereby guarantee the stability of blanking process, reduce the processing error.

Description

Technical Field

[0001] This utility model relates to the field of chain piece punching technology, and in particular to a burr-free punching device for chain piece cross-sections. Background Technology

[0002] As a key component of mechanical transmission and conveying, the quality of the chain directly affects the operating efficiency and service life of the equipment. Chain links, as the core component of the chain, require precise machining and high-quality cross-sections. In the chain link production process, punching is a crucial step in forming the basic shape of the chain link. With the increasing demands for stability and wear resistance in the machinery industry, higher standards are being set for the smoothness and flatness of the chain link cross-sections.

[0003] Patent publication number "CN220970682U" discloses a burr-free punching device for chain links, relating to the field of chain processing. The device includes a base plate, a top plate, an upper punching die, and a lower punching die. The top plate is horizontally positioned above the base plate and fixedly connected to it via two side plates. The lower punching die is fixedly positioned at the upper end of the base plate, and a punching groove is provided in the middle of its upper end for the upper punching die to slide into. A pressure plate is connected to the lower side of the top plate via a hydraulic rod. The upper punching die is fixedly positioned in the middle of the lower side of the pressure plate and vertically aligned with the punching groove. Two circular openings are provided at the lower end of the upper punching die, and a punching rod is slidably disposed in each opening via a first elastic reset mechanism. Telescopic grooves are provided on both sides of the pressure plate. This invention can simultaneously punch metal sheets twice to complete the punching of chain links, reducing operating costs, improving processing efficiency, and increasing punching accuracy, making it convenient for users.

[0004] To address the aforementioned issues, existing burr-free punching devices for chain links rely on simple mechanical clamping or manual fixing, which makes it easy for the lower die to shift and wobble under the punching force. The positioning accuracy of the upper and lower dies is difficult to guarantee, resulting in poor stability during the punching process and numerous processing errors caused by die misalignment. Utility Model Content

[0005] The purpose of this invention is to provide a burr-free punching device for chain links, which solves the problem of lower die offset and shaking caused by punching force during punching, ensures the accuracy of the matching position of the upper and lower dies, improves the stability of the punching process, and reduces the processing error caused by die misalignment.

[0006] To achieve the above objectives, this utility model provides a burr-free punching device for chain links, including a base plate;

[0007] It also includes a worktable fixedly connected to the top surface of the base plate, and the side of the worktable is provided with a fixing component;

[0008] The fixing assembly includes two secondary support plates, which are fixedly connected to the top side of the workbench. A connecting rod is rotatably connected between the two secondary support plates. A shaped pressure rod is fixedly connected to both ends of the outer side of the connecting rod. A gear ring is fixedly connected to the center of the outer side of the connecting rod. A main support plate is fixedly connected to the side of the workbench. A gear is rotatably connected to the inner side of the main support plate. A motor is fixedly connected to the outer side of the main support plate. The output end of the motor passes through the main support plate and is fixedly connected to the gear. The gear and the gear ring mesh with each other.

[0009] The worktable is provided with a slide rod fixedly connected to its inner side, a slider slidably connected to the outer side of the slide rod, a bidirectional screw rotatably connected to the inner side of the worktable, and sliders screwed onto the outer sides of different threads of the bidirectional screw. A disc wheel is rotatably connected to the side of the worktable, and the output end of the disc wheel passes through the worktable and is fixedly connected to the bidirectional screw.

[0010] The slider is fixedly connected to a connecting rod on its outer side, a push plate is fixedly connected to the inner side of the connecting rod, a damper is fixedly connected to the inner side of the push plate, a fixing plate is fixedly connected to the side of the damper, a transverse spring is fixedly connected between the fixing plate and the push plate, and the transverse spring is sleeved on the outer side of the damper.

[0011] The base plate is fixedly connected to the top of a support column, and the support column is fixedly connected to the top of a top plate.

[0012] The top plate is fixedly connected to a hydraulic rod at its bottom. The output end of the hydraulic rod passes through the top plate and is fixedly connected to a connecting plate. A guide rod is fixedly connected to the top side of the connecting plate. The guide rod is slidably installed on the inner side of the top plate. A cover plate is fixedly connected to the top of the guide rod. A vertical spring is fixedly connected between the cover plate and the top plate. The vertical spring is sleeved on the outer side of the guide rod.

[0013] The connecting plate is fixedly connected to the bottom side of the upper punching die, the workbench is provided with the lower punching die on the top side, and the stripper plate is fixedly connected to the inner side of the lower punching die.

[0014] This utility model discloses a burr-free punching device for chain links. Through a linkage structure involving a motor-driven gear, toothed ring, connecting rod, and irregularly shaped pressure rod, the lower punching die is stably clamped, preventing displacement or wobbling during the punching process due to the punching force. This ensures that the upper and lower punching dies maintain a precise fit, guaranteeing the stability of the punching process and reducing processing errors caused by die misalignment. The hydraulic rod drives the upper and lower punching dies to operate in coordination, ensuring uniform force and smooth shearing of the chain links during punching. This avoids defects such as burrs and corner collapse that may occur in traditional punching methods, achieving burr-free punching, guaranteeing the processing quality of the chain links, and improving the smoothness of subsequent assembly and the overall performance of the chain. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the external structure of an embodiment of the present utility model.

[0017] Figure 2 This is an embodiment of the present utility model. Figure 1 Enlarged view of the structure at point A in the middle.

[0018] Figure 3 This is a front view structural diagram of an embodiment of the present utility model.

[0019] Figure 4 This is a schematic diagram of the back structure of an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the top anatomical structure of an embodiment of this utility model.

[0021] 1. Base plate; 2. Support column; 3. Top plate; 4. Guide rod; 5. Vertical spring; 6. Cover plate; 7. Hydraulic rod; 8. Fixing component; 81. Secondary support plate; 82. Motor; 83. Gear; 84. Main support plate; 85. Connecting rod; 86. Gear ring; 87. Irregular pressure rod; 9. Worktable; 10. Disc wheel; 11. Double-acting screw; 12. Slider; 13. Connecting rod; 14. Push plate; 15. Connecting plate; 16. Upper punching die; 17. Slide rod; 18. Lower punching die; 19. Stripper plate; 20. Damper; 21. Horizontal spring; 22. Fixing plate. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] Please see Figures 1-5 .

[0024] A burr-free punching device for chain links includes a base plate 1;

[0025] It also includes a worktable 9 fixedly connected to the top surface of the base plate 1, and a fixing component 8 is provided on the side of the worktable 9;

[0026] The fixed assembly 8 includes a secondary support plate 81, which is fixedly connected to the top side of the workbench 9. There are two secondary support plates 81, and a connecting rod 85 is rotatably connected between the two secondary support plates 81. A special-shaped pressure rod 87 is fixedly connected to both ends of the outer side of the connecting rod 85. A gear ring 86 is fixedly connected to the center of the outer side of the connecting rod 85. A main support plate 84 is fixedly connected to the side of the workbench 9. A gear 83 is rotatably connected to the inner side of the main support plate 84. A motor 82 is fixedly connected to the outer side of the main support plate 84. The output end of the motor 82 passes through the main support plate 84 and is fixedly connected to the gear 83. The gear 83 and the gear ring 86 mesh with each other.

[0027] First, this part of the structure is also used to fix the blanking die 18. After the motor 82 is powered on, its output shaft begins to rotate, which in turn drives the gear 83 fixedly connected to it to rotate synchronously. Since the gear 83 is engaged with the gear ring 86, the rotational force of the gear 83 is transmitted to the gear ring 86, causing the gear ring 86 to rotate accordingly. The gear ring 86 is fixed in the center of the connecting rod 85, so the connecting rod 85 will rotate under the support of the two secondary support plates 81. As the connecting rod 85 rotates, the irregular pressure rods 87 at both ends will rotate around the connecting rod 85 as the axis, gradually approaching the blanking die 18 placed on the worktable 9, until they are in close contact with the surface of the blanking die 18, thereby firmly pressing the blanking die 18 onto the worktable 9. Throughout the blanking process, this clamping force can effectively counteract the impact force generated during blanking, preventing the blanking die 18 from shifting or shaking, and ensuring the accuracy of the blanking position.

[0028] Furthermore, a slide rod 17 is fixedly connected to the inner side of the worktable 9, and a slider 12 is slidably connected to the outer side of the slide rod 17. A bidirectional screw 11 is rotatably connected to the inner side of the worktable 9, and the sliders 12 are respectively screwed onto the outer sides of different threads of the bidirectional screw 11. A disc wheel 10 is rotatably connected to the side of the worktable 9, and the output end of the disc wheel 10 passes through the worktable 9 and is fixedly connected to the bidirectional screw 11. This part of the structure is mainly used to fix the blanking die 18. When it is necessary to change or adjust the blanking die 18 according to the size of the chain links, the operator rotates the disc wheel 10. The rotation of the disc wheel 10 will drive the bidirectional screw 11 fixedly connected to it to rotate synchronously inside the worktable 9. Since the two sliders 12 are respectively screwed onto different thread sections of the bidirectional screw 11, and the sliders 12 are sleeved on the outer side of the slide rod 17 and slide with it, the rotation of the bidirectional screw 11 will cause the two sliders 12 to be driven by opposite directions. Under the guiding and limiting effect of the slide bar 17, the slider 12 cannot rotate with the bidirectional screw 11, and can only move towards or away from each other along the axis of the slide bar 17. When the two sliders 12 move towards each other, they clamp and fix the lower die 18 placed on the top side of the worktable 9 from both sides; when it is necessary to remove the lower die 18, the two sliders 12 are moved away from each other to loosen the fixation. Through this movement method, the lower dies 18 of different specifications can be firmly fixed, ensuring that the lower die will not be displaced during the punching process, ensuring punching accuracy, and also facilitating quick replacement of the lower die 18 to meet the processing requirements of different chain links.

[0029] Furthermore, a connecting rod 13 is fixedly connected to the outer side of the slider 12, a push plate 14 is fixedly connected to the inner side of the connecting rod 13, a damper 20 is fixedly connected to the inner side of the push plate 14, a fixed plate 22 is fixedly connected to the side of the damper 20, and a transverse spring 21 is fixedly connected between the fixed plate 22 and the push plate 14, with the transverse spring 21 sleeved on the outer side of the damper 20. When the slider 12 moves under the action of the bidirectional screw 11 and the slide rod 17, the slider 12 will drive the push plate 14 to move synchronously through the connecting rod 13. The movement of the push plate 14 will transmit the force to the fixed plate 22 through the damper 20 and the transverse spring 21, causing the fixed plate 22 to move closer to the punching die 18. When the fixed plate 22 contacts the side of the punching die 18, as the push plate 14 continues to move, the transverse spring 21 will be compressed and undergo elastic deformation, generating a reverse elastic force, while the damper 20 will generate a damping force due to compression. The combined action of these two forces not only ensures that the fixing plate 22 fits tightly against the side of the lower die 18, further enhancing the fixing effect on the lower die, but also prevents rigid collisions between the push plate 14 and the lower die, preventing scratches or damage to the surface of the lower die 18, thus providing a good buffering and protective effect.

[0030] Furthermore, a support column 2 is fixedly connected to the top of the base plate 1, and a top plate 3 is fixedly connected to the top of the support column 2. The base plate 1 serves as the foundation of the entire device, providing a stable mounting platform for the support column 2. The support column 2 vertically connects the base plate 1 and the top plate 3, forming a robust frame structure. This frame structure organically connects all components of the device, ensuring that the workbench 9, the fixed components, and related parts on the top plate 3 are in relatively stable positions. During the punching operation, the support column 2 can withstand the weight from the top plate 3 and related components above, as well as the downward impact force generated during punching, and evenly transmits these forces to the base plate 1, which then distributes them to the ground. This ensures that the entire device does not experience shaking, tilting, or other instability during operation, providing reliable structural support for the smooth execution of the punching operation.

[0031] Furthermore, a hydraulic rod 7 is fixedly connected to the bottom of the top plate 3. The output end of the hydraulic rod 7 passes through the top plate 3 and is fixedly connected to a connecting plate 15. A guide rod 4 is fixedly connected to the top side of the connecting plate 15. The guide rod 4 is slidably installed on the inner side of the top plate 3. A cover plate 6 is fixedly connected to the top of the guide rod 4. A vertical spring 5 is fixedly connected between the cover plate 6 and the top plate 3, and the vertical spring 5 is sleeved on the outer side of the guide rod 4. As a power component, the hydraulic rod 7 extends or retracts when hydraulic oil is supplied, thereby driving the connecting plate 15 to move up and down. During the movement of the connecting plate 15, it drives the top guide rod 4 to slide on the inner side of the top plate 3. The sliding cooperation between the guide rod 4 and the top plate 3 can strictly limit the movement direction of the connecting plate 15, ensuring that the connecting plate 15 always maintains vertical up and down movement, avoiding deviation that would affect the punching accuracy. When the connecting plate 15 moves downward, the cover plate 6 at the top of the guide rod 4 moves downward accordingly. The vertical spring 5 between the cover plate 6 and the top plate 3 is compressed, and the elastic potential energy of the spring gradually increases, generating an upward buffering force. This force is transmitted to the connecting plate 15 through the guide rod 4, effectively mitigating the impact force during punching and making the punching process smoother. When the hydraulic rod 7 drives the connecting plate 15 to return to its original position, the compressed vertical spring 5 releases its elastic potential energy, generating a downward thrust, which helps the connecting plate 15 return to its initial position quickly and smoothly, improving the working efficiency of the device.

[0032] Furthermore, a punching upper die 16 is fixedly connected to the bottom side of the connecting plate 15, and a punching lower die 18 is provided on the top side of the worktable 9. A stripper plate 19 is fixedly connected to the inner side of the punching lower die 18. When the connecting plate 15 moves downward under the drive of the hydraulic rod 7, the punching upper die 16 fixed on its bottom side will move downward accordingly, gradually approaching the punching lower die 18 fixed on the top side of the worktable 9. When the punching upper die 16 contacts the chain piece placed on the punching lower die 18, as the connecting plate 15 continues to move downward, the punching upper die 16 will apply pressure to the chain piece, cooperating with the punching lower die 18 to complete the punching operation of the chain piece. Due to the precise design of the die, burr-free processing of the chain piece cross-section can be achieved. After the blanking is completed, the hydraulic rod 7 drives the connecting plate 15 and the upper blanking die 16 to move upward. At this time, the stripper plate 19 inside the lower blanking die 18 will move upward under its own elasticity or the push of the related linkage structure, pushing out the blanking chain piece stuck in the lower blanking die 18, so that it can be separated from the lower blanking die 18, making it easier for the operator to pick up the material, realizing automated stripping and improving work efficiency.

[0033] Overall workflow: The device is based on the base plate 1, and the top plate 3 is supported by the support column 2 to form a stable frame. The fixed components 8 and slider 12 on the worktable 9 work together to punch the lower die 18. The motor 82 drives the gear 83 to rotate, which drives the connecting rod 85 and the irregular pressure rod 87 to rotate through the gear ring 86, pressing the lower die 18 from above. At the same time, the operator rotates the disc wheel 10 to rotate the bidirectional screw 11, which drives the slider 12 to move in opposite directions along the slide rod 17. The slider 12 is connected by the connecting rod 13, the push plate 14, and the damper 20. The horizontal spring 21 drives the fixed plate 22 to clamp and buffer the lower die 18 from both sides, ensuring its stability. During punching, the hydraulic rod 7 on the top plate 3 drives the connecting plate 15 and the upper die 16 to move up and down. The guide rod 4 ensures the verticality of the movement. The vertical spring 5 and the cover plate 6 play a buffering and auxiliary reset role. The upper die 16 and the fixed lower die 18 cooperate to complete the burr-free punching of the chain pieces. After punching, the stripper plate 19 pushes the chain pieces out from the lower die, realizing automated stripping. All components work together in the whole process to ensure punching accuracy and efficiency.

[0034] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A burr-free punching device for chain links, comprising a base plate, characterized in that: It also includes a worktable fixedly connected to the top surface of the base plate, and the side of the worktable is provided with a fixing component; The fixing assembly includes two secondary support plates, which are fixedly connected to the top side of the workbench. A connecting rod is rotatably connected between the two secondary support plates. A shaped pressure rod is fixedly connected to both ends of the outer side of the connecting rod. A gear ring is fixedly connected to the center of the outer side of the connecting rod. A main support plate is fixedly connected to the side of the workbench. A gear is rotatably connected to the inner side of the main support plate. A motor is fixedly connected to the outer side of the main support plate. The output end of the motor passes through the main support plate and is fixedly connected to the gear. The gear and the gear ring mesh with each other.

2. The burr-free punching device for chain links according to claim 1, characterized in that: A slide rod is fixedly connected to the inner side of the worktable, and a slider is slidably connected to the outer side of the slide rod. A bidirectional screw is rotatably connected to the inner side of the worktable, and the sliders are screwed onto the outer sides of different threads of the bidirectional screw. A disc wheel is rotatably connected to the side of the worktable, and the output end of the disc wheel passes through the worktable and is fixedly connected to the bidirectional screw.

3. The burr-free punching device for chain links according to claim 2, characterized in that: A connecting rod is fixedly connected to the outer side of the slider, a push plate is fixedly connected to the inner side of the connecting rod, a damper is fixedly connected to the inner side of the push plate, a fixing plate is fixedly connected to the side of the damper, and a transverse spring is fixedly connected between the fixing plate and the push plate, with the transverse spring sleeved on the outer side of the damper.

4. The burr-free punching device for chain links according to claim 1, characterized in that: A support column is fixedly connected to the top of the base plate, and a top plate is fixedly connected to the top of the support column.

5. The burr-free punching device for chain links according to claim 4, characterized in that: A hydraulic rod is fixedly connected to the bottom of the top plate. The output end of the hydraulic rod passes through the top plate and is fixedly connected to a connecting plate. A guide rod is fixedly connected to the top side of the connecting plate. The guide rod is slidably installed on the inner side of the top plate. A cover plate is fixedly connected to the top of the guide rod. A vertical spring is fixedly connected between the cover plate and the top plate. The vertical spring is sleeved on the outer side of the guide rod.

6. The burr-free punching device for chain links according to claim 5, characterized in that: The bottom side of the connecting plate is fixedly connected to the upper punching die, the top side of the workbench is provided with the lower punching die, and the inner side of the lower punching die is fixedly connected to the stripper plate.

Images