Workpiece positioning device for punching machine
By designing an adjustment box and a multi-directional push-pull structure for the workpiece positioning device on the punch press, the problem of workpiece displacement during the stamping process is solved, achieving stable workpiece clamping and high-quality machining.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING FEIRUI HARDWARE PROD CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-05-15
AI Technical Summary
Existing punch presses lack effective positioning mechanisms during workpiece processing, which makes the workpiece prone to displacement and affects processing quality.
A workpiece positioning device including an adjustment box, clamping blocks, and a multi-directional push-pull structure was designed. The clamping blocks are brought together or dispersed by manually pushing and pulling the structure to achieve stable clamping of the workpiece.
It effectively prevents workpieces from shifting during the stamping process, ensures processing quality, and facilitates clamping of workpieces of different shapes. It is also easy to operate.
Smart Images
Figure CN224238092U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of punch press technology, specifically to a workpiece positioning device for punch presses. Background Technology
[0002] A punch press is a stamping press. In national production, stamping technology has become increasingly widely used due to its advantages over traditional machining, such as saving materials and energy, high efficiency, low operator skill requirements, and the ability to produce products that cannot be achieved by machining through the application of various molds.
[0003] Currently, most punch presses on the market do not have a structure for positioning workpieces during processing. Workpieces are generally placed on the platform of the punch press and then directly stamped. This can easily cause the workpiece to shift during processing, thus affecting the final processing quality of the workpiece.
[0004] To address the aforementioned problems, we propose a workpiece positioning device for punch presses. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide a workpiece positioning device for a punch press, which can firmly clamp and fix the workpiece to be punched.
[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:
[0007] A workpiece positioning device for a punch press includes a platform for the punch press, an adjustment box, clamping blocks, and a multi-directional push-pull structure. The adjustment box is detachably installed on the upper side of the platform, and a plurality of clamping blocks are evenly arranged circumferentially on its top wall. The clamping blocks are slidably arranged on the top wall of the adjustment box along the radial direction of the circumference. Each clamping block is driven by the multi-directional drag structure to move synchronously toward the center of the circumference or to move outwards from the circumference.
[0008] As an improvement, an I-shaped slider is fixed to the bottom of the clamping block, and a straight-line limiting slot is reserved on the top wall of the adjusting box for each slider. After the slider passes through the limiting slot, it is movably fitted in the limiting slot, and the clamping end of the clamping block protrudes to the outer periphery of the slider. This allows the clamping block to be stably slidably connected to the adjusting box.
[0009] As an improvement, the multi-directional push-pull structure includes a lever, a transmission disc, a rotating shaft, and a manual push-pull structure. The rotating shaft is rotatably connected between the top and bottom walls of the adjustment box. The transmission disc is a circular disc structure. After the center is rotated and sleeved on the rotating shaft, the non-center parts corresponding to each slider form a one-line actuation slot. A lever is formed on the bottom surface of the slider. The lever is movably fitted in the actuation slot. The angle between the actuation slot and the radial direction of the disc is 10° to 20°. One of the sliders is pushed and pulled by the manual push-pull structure set on the adjustment box.
[0010] As an improvement, the manual push-pull structure includes a threaded rod and a handwheel; the threaded rod is rotatably connected between the two ends of one of the limiting slots, and the corresponding slider is threaded onto the threaded rod. One end of the threaded rod extends to the outside of the limiting slot and is fixed with the handwheel. This facilitates the synchronous convergence or dispersion of the clamping blocks.
[0011] As an improvement, positioning posts are fixed at the four corners of the bottom surface of the adjustment box, and positioning holes are pre-drilled on the top surface of the placement platform corresponding to each positioning post. The positioning posts and positioning holes are inserted and matched. This allows the adjustment box to be easily installed and removed on the punch press, thus facilitating replacement.
[0012] The advantages of this utility model compared with the prior art are as follows:
[0013] 1. When using this new type of device, the clamping blocks can be controlled to move synchronously together or disperse synchronously by turning the handwheel. After the convergence movement, the workpiece placed on the upper side of the adjustment box can be clamped and fixed, which can effectively prevent the workpiece from shifting during the subsequent stamping process and ensure the processing quality. After the dispersion movement, the clamping and fixing of the workpiece can be released, making the operation convenient.
[0014] 2. The adjustment box of this invention can be easily replaced. By replacing it with the one in Embodiment 1, Embodiment 2 or other embodiments, workpieces of different shapes can be clamped and fixed. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model installed on the storage platform.
[0016] Figure 2 This is a structural schematic diagram of the storage platform of this utility model.
[0017] Figure 3 This is a schematic diagram of the structure of this utility model.
[0018] Figure 4 This is a cross-sectional structural diagram of the present invention.
[0019] Figure 5 This is the utility model Figure 4A partial structural diagram.
[0020] Figure 6 This is a schematic diagram of the clamping block and slider of this utility model.
[0021] As shown in the figure: 1. Placing platform; 2. Adjustment box; 3. Clamping block; 4. Slider; 5. Limiting slot; 6. Toggle lever; 7. Transmission disc; 8. Rotating shaft; 9. Toggle slot; 10. Threaded rod; 11. Handwheel; 12. Positioning pin; 13. Positioning socket. Detailed Implementation
[0022] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.
[0023] The present invention will now be described in further detail with reference to the accompanying drawings.
[0024] Example 1
[0025] A workpiece positioning device for a punch press, comprising:
[0026] Storage platform 1 for the punch press;
[0027] The system comprises an adjustment box 2, clamping blocks 3, and a multi-directional push-pull structure. The adjustment box 2 is a square box structure, with positioning posts 12 fixed at the four corners of its bottom surface. Positioning insertion holes 13 are pre-drilled on the top surface of the storage platform 1 corresponding to each positioning post 12, and the positioning posts 12 are inserted into the positioning insertion holes 13. Six clamping blocks 3 are evenly arranged circumferentially on the top wall of the adjustment box 2. I-shaped sliders 4 are fixed to the bottom of each clamping block 3. A straight-line limiting slot 5 is pre-drilled on the top wall of the adjustment box 2 corresponding to each slider 4. After the slider 4 passes through the limiting slot 5, it is movably fitted within the limiting slot 5. The clamping end of the clamping block 3 protrudes to the periphery of the slider 4. The multi-directional push-pull structure includes a lever 6, a transmission disc 7, a rotating shaft 8, a threaded rod 10, and a handwheel 11. The rotating shaft 8 is rotatably connected between the top and bottom walls of the regulating box 2. The transmission disc 7 is a circular disc structure. After the center is rotated and sleeved on the rotating shaft 8, the non-center parts corresponding to each slider 4 form a one-line actuation groove 9. A lever 6 is formed on the bottom surface of the slider 4. The lever 6 is movably fitted in the actuation groove 9. The included angle between the actuation groove 9 and the radial direction of the disc is 10° to 20°. The threaded rod 10 is rotatably connected between the two ends of one of the limiting grooves 5. The corresponding slider 4 is threadedly sleeved on the threaded rod 10. After one end of the threaded rod 10 extends to the outside of the limiting groove 5, a handwheel 11 is fixed thereon.
[0028] In the specific implementation of this embodiment:
[0029] like Figure 1 and 3 As shown, after installing the adjusting box 2 onto the placing platform 1, the cylindrical workpiece is placed on the top surface of the adjusting box 2, positioned between the clamping blocks 3. Then, rotating the handwheel 11 clockwise causes the threaded rod 10 to directly move one slider 4 closer to the workpiece. Through the interaction of the transmission disc 7 and the lever 6, all sliders 4 are simultaneously moved closer to the workpiece until it is clamped and fixed. The workpiece can then be stamped. After completion, rotating the handwheel 11 counterclockwise causes each clamping block 3 to move away from the workpiece synchronously, thus releasing the clamping.
[0030] Example 2
[0031] Unlike the embodiments described above, this invention provides four clamping blocks. This allows the present invention to stably clamp and fix a square workpiece.
[0032] The clamping block 3 can also be configured with more or three. In this way, the present invention can clamp and fix workpieces of more shapes, or triangular prism workpieces.
[0033] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A workpiece positioning device for a punch press, comprising a work platform (1) of the punch press, characterized in that: It also includes an adjustment box (2), clamping blocks (3) and a multi-directional push-pull structure; the adjustment box (2) is detachably installed on the upper side of the storage platform (1), and a number of clamping blocks (3) are evenly arranged along the circumference on the top wall. The clamping blocks (3) are slidably arranged on the top wall of the adjustment box (2) along the radial direction of the circumference. Each clamping block (3) is driven by the multi-directional drag structure to move synchronously towards the center of the circumference or to move outwards from the circumference.
2. The workpiece positioning device for a punch press according to claim 1, characterized in that: The bottom of the clamping block (3) is fixed with an I-shaped slider (4). The top wall of the adjusting box (2) is reserved with a straight-line limiting slot (5) corresponding to each slider (4). After the slider (4) passes through the limiting slot (5), it is movably fitted in the limiting slot (5). The clamping end of the clamping block (3) protrudes to the periphery of the slider (4).
3. The workpiece positioning device for a punch press according to claim 2, characterized in that: The multi-directional push-pull structure includes a lever (6), a transmission disc (7), a rotating shaft (8), and a manual push-pull structure. The rotating shaft (8) is rotatably connected between the top and bottom walls of the regulating box (2). The transmission disc (7) is a circular disc structure. After the center is rotated and sleeved on the rotating shaft (8), the non-center corresponding to each slider (4) forms a one-line actuation slot (9). A lever (6) is formed on the bottom surface of the slider (4). The lever (6) is movably fitted in the actuation slot (9). The included angle between the actuation slot (9) and the radial direction of the disc is 10° to 20°. One of the sliders (4) is pushed and pulled by the manual push-pull structure set on the regulating box (2).
4. A workpiece positioning device for a punch press according to claim 3, characterized in that: The manual push-pull structure includes a threaded rod (10) and a handwheel (11); the threaded rod (10) is rotatably connected between the two ends of one of the limiting slots (5), and the corresponding slider (4) is threaded onto the threaded rod (10). After one end of the threaded rod (10) extends to the outside of the limiting slot (5), a handwheel (11) is fixed thereon.
5. A workpiece positioning device for a punch press according to claim 1, characterized in that: Positioning posts (12) are fixed at the four corners of the bottom surface of the adjustment box (2). Positioning holes (13) are reserved on the top surface of the storage platform (1) corresponding to each positioning post (12). The positioning posts (12) and positioning holes (13) are inserted and matched.