Punching jig

Abstract

The punching jig comprises a machining base, a punch and a clamping assembly, the machining base is connected with a punching base, the punching base is provided with a punching space and a punching hole, the punching hole is communicated with the punching space, and the cross section of the punching hole is semicircular; the shape of the cross section of the punch is matched with the shape of the punching hole, the end, away from the punching base, of the punch is connected with external equipment, and the other end of the punch penetrates through the punching hole and is inserted into the punching space. The clamping assembly is movably connected to the machining base and located on one side of the punching base, and the clamping assembly is used for clamping a product. The punching time of a single product is shortened, so that the overall production efficiency is improved, the labor intensity of operators is reduced, the working comfort of the operators is improved, the product precision is improved, the defective rate of products is greatly reduced, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of punching fixtures, and in particular to a punching fixture. Background Technology

[0002] In current production operations, punching holes in outer packaging boxes or bags is generally done manually by operators. This traditional method has many drawbacks: Firstly, manual punching is extremely inefficient, greatly affecting the overall production progress. Furthermore, the repetitive manual operation significantly increases the workload of operators, easily leading to fatigue and consequently affecting work quality. Secondly, due to the lack of effective error-proofing and limit designs, the accuracy of the product during the punching process is difficult to control, resulting in inconsistent product quality that fails to meet the growing market demand for high precision. Utility Model Content

[0003] This utility model aims to at least partially solve one of the problems in the related technology. Therefore, one of the objectives of this utility model is to provide a punching fixture to solve the problems of low efficiency, high labor intensity, and difficulty in controlling product accuracy in existing manual punching methods.

[0004] A punching fixture, the punching fixture comprising:

[0005] A processing base is connected to a punching seat, the punching seat has a punching space, the punching seat has a punching hole, the punching hole is connected to the punching space, and the cross-sectional shape of the punching hole is semi-circular.

[0006] A punch, the cross-sectional shape of which is adapted to the shape of the punching hole, one end of the punch away from the punching seat is connected to an external device, and the other end of the punch passes through the punching hole and is inserted into the punching space;

[0007] A clamping assembly is movably connected to the processing base and close to the punching seat, and the clamping assembly is used to clamp the product.

[0008] Furthermore, the clamping assembly includes two clamping seats arranged opposite each other, both of which are movably connected to the processing base and are located on both sides of the punching base, respectively.

[0009] Furthermore, the processing base has two connecting holes, both of which extend along the extension direction of the processing base, and the clamping seat is threadedly connected to the connecting holes by bolts.

[0010] Furthermore, the processing base is connected to a slide rail, which extends along the extension direction of the processing base, and the bottom of the clamping seat is recessed with a sliding groove that matches the slide rail.

[0011] Furthermore, each of the two clamping seats has a recessed snap-fit ​​groove on the side near the top of its opposite side surface, and the two sides of the product are respectively held in the two snap-fit ​​grooves.

[0012] Furthermore, the punch includes a stamping part and a connecting part connected together. The cross-sectional shape of the stamping part is adapted to the shape of the stamping hole. The stamping part passes through the stamping hole and is inserted into the punching space. The diameter of the connecting part is larger than the diameter of the stamping hole.

[0013] Furthermore, the end of the stamping part away from the connecting part has a double-layer structure, with the inner layer being alloy steel and the outer layer being a diamond coating.

[0014] Furthermore, the walls of the punched holes are plated with hard chrome.

[0015] Furthermore, the punching seat is connected to a movable adjusting ring, which encloses the punching hole to form the punching hole, and the adjusting ring is adjusted to change the diameter of the punching hole.

[0016] Furthermore, the punching fixture is also provided with a liquid injection device, which is connected to the processing base and the liquid outlet of the liquid injection device is arranged facing the punch.

[0017] The technical solutions provided in this application have the following advantages compared with the prior art:

[0018] This application designs the punch and punch holder's punch holes with semi-circular cross-sectional shapes. The semi-circular shape effectively maintains the direction of movement of the punch column during its motion, thus ensuring accurate punching position. Furthermore, the hemispherical design facilitates easier docking when the punch column aligns with the cutting edge, eliminating the need for complex calibration and allowing for quick and accurate alignment. Even if minor deviations occur during operation, the guiding effect of the hemispherical surface automatically returns the punch column to the correct position, achieving a foolproof effect. Moreover, this design makes the punching process smoother, reduces cutting resistance, and improves punching quality to a certain extent, resulting in smoother and neater hole edges.

[0019] Furthermore, by connecting the punch to external equipment, in actual operation, the product can be placed smoothly into the fixture, and the punching operation can be carried out with the help of the equipment's power, completely eliminating the cumbersome method of manual drilling.

[0020] Furthermore, it is equipped with a clamping component that is movably connected to the processing base, which can be flexibly adjusted according to products of different sizes, enhancing the versatility of the fixture.

[0021] In summary, the manual punching method has been replaced by machine-powered stamping, significantly reducing the punching time for individual products and thus improving overall production efficiency. By reducing manual operation by operators, the labor intensity of workers is reduced, and their work comfort is improved. Furthermore, through foolproof structures and limit designs, product accuracy is effectively controlled, the defect rate is significantly reduced, product quality is improved, and the product's competitiveness in the market is enhanced. Finally, the adjustable clamping components can adapt to different product sizes, eliminating the need for frequent fixture changes for different sizes, reducing production costs, and improving production flexibility and convenience. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] In the attached image:

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the punching fixture of this application;

[0026] Figure 2 This is a schematic diagram of the structure of a punch in one embodiment of the punching fixture of this application;

[0027] Figure 3 This is a structural schematic diagram of the punch in the punching fixture of this application from another perspective.

[0028] Figure label:

[0029] 1. A punching fixture; 10. A processing base; 11. A punching seat; 111. A punching hole; 13. A slide rail; 30. A punch; 113. A punching space; 31. A punching part; 33. A connecting part; 50. A clamping assembly; 51. A clamping seat; 511. A slide groove; 513. A snap-fit ​​groove; 70. A liquid jetting device. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0032] like Figures 1 to 3 As shown, the punching fixture 1 provided in this application includes:

[0033] The processing base 10 is connected to a punching seat 11. The punching seat 11 has a punching space 113 and a punching hole 111. The punching hole 111 is connected to the punching space 113 and has a semi-circular cross-sectional shape.

[0034] Punch 30, the cross-sectional shape of punch 30 is adapted to the shape of punch hole 111, one end of punch 30 away from punch seat 11 is connected to external equipment, and the other end of punch 30 passes through punch hole 111 and is inserted into punch space 113.

[0035] Clamping assembly 50 is movably connected to processing base 10 and close to punching base 11. Clamping assembly 50 is used to clamp the product.

[0036] The processing base 10 serves as a basic support, connecting to the punching seat 11. The punching space 113 and the semi-circular punching hole 111 of the punching seat 11 provide a space and specific shape constraints for the punching operation. The punch 30 is adapted to the punching hole 111, and one end is connected to external equipment to obtain power to realize the punching action. The clamping assembly 50 is used to fix the product, ensuring the stability of the product during the punching process. All components work together to form the basic punching fixture structure.

[0037] Optionally, the machining base 10 can be made of high-strength aluminum alloy, which is lightweight and high-strength, effectively reducing the overall weight of the fixture and facilitating installation and relocation. Multiple mounting slots of different sizes are provided on the machining base 10 for connecting various auxiliary devices, such as positioning sensors and waste collection devices, increasing the functionality of the fixture.

[0038] Optionally, the punching base 11 is connected to the processing base 10 by detachable bolts, which facilitates disassembly and installation when the punching base 11 is damaged or needs to be replaced with a different specification.

[0039] Optionally, a buffer layer, such as rubber, can be provided inside the punching space 113 to reduce the impact force on the product during punching by the punch 30.

[0040] Optionally, the semi-circular cross-section of the punch hole 111 can be designed with different radius specifications according to different product requirements to meet diverse punching requirements.

[0041] Optionally, the punch 30 and the external equipment connection part 33 adopt a standard interface, such as a universal hydraulic interface or pneumatic interface, to facilitate compatibility with various stamping equipment.

[0042] Optionally, in addition to holding the product, the clamping assembly 50 can also be equipped with a fine-tuning device to precisely adjust the position of the product within a small range, further improving the punching accuracy.

[0043] Furthermore, the clamping assembly 50 includes two clamping seats 51 arranged opposite to each other. Both clamping seats 51 are movably connected to the processing base 10 and are located on both sides of the punching seat 11, respectively.

[0044] Specifically, the clamping assembly 50 is further refined, with two opposing and movably connected clamping seats 51 that can stably clamp the product from both sides. Compared to a single clamping seat 51, it can better adapt to products of different shapes and sizes, enhancing the stability and versatility of clamping.

[0045] Optionally, the two clamping seats 51 can adopt different clamping methods. One clamping seat 51 adopts a mechanical clamping method, which achieves clamping by rotating the screw to drive the clamping block to move; the other clamping seat 51 adopts a magnetic clamping method, which can clamp some metal products more quickly and stably, improving versatility.

[0046] Optionally, the surface of the holder can be covered with a flexible anti-slip material, such as silicone, which can increase friction with the product, prevent the product from sliding, and avoid scratching the product surface during clamping.

[0047] Furthermore, the processing base 10 has two connecting holes, both of which extend along the extension direction of the processing base 10, and the clamping seat 51 is threadedly connected to the connecting holes by bolts.

[0048] Specifically, this connection method allows the position of the clamping seat 51 on the machining base 10 to be adjusted via bolts, making operation simple and convenient. The connecting holes provided along the extension direction of the machining base 10 provide adjustable space for the clamping seat 51, facilitating the adjustment of the clamping seat 51 spacing according to product dimensions and improving the versatility of the fixture.

[0049] Optionally, the connecting hole adopts an oblong design, which provides a wider adjustment range for the bolt and makes the position adjustment of the clamping seat 51 more flexible. A threaded reinforcing sleeve made of high-strength copper alloy is installed inside the connecting hole to improve the wear resistance and strength of the thread and prevent thread damage due to frequent adjustment.

[0050] Furthermore, the processing base 10 is connected to a slide rail 13, which extends along the extension direction of the processing base 10. The bottom of the clamping seat 51 is recessed with a slide groove 511, which matches the slide rail 13.

[0051] Specifically, the cooperation between the slide rail 13 and the slide groove 511 complements the bolt connection. The slide rail 13 slides within the slide groove 511, making the movement of the clamping seat 51 smoother and allowing for more precise positioning during adjustment. This avoids deviations that may occur during bolt adjustment and further enhances the fixture's adaptability to different product sizes.

[0052] Optionally, the slide rail 13 adopts a T-shaped slide rail 13, which cooperates with the T-slot on the processing base 10. This structure has better guidance and stability, which can ensure that the clamping seat 51 maintains linear motion during movement and improves positioning accuracy.

[0053] Optionally, a lubrication groove 511 is provided inside the slide rail 511. By injecting lubricating oil, the coefficient of friction between the slide rail 13 and the slide rail 511 can be further reduced, making the movement of the clamping seat 51 smoother, while reducing wear and extending service life.

[0054] Furthermore, each of the two clamping seats 51 has a recessed locking groove 513 on the side of its opposite sides near the top, and the two sides of the product are respectively held in the two locking grooves 513.

[0055] Specifically, the design of the snap-fit ​​groove 513 further enhances the clamping effect on the product. The two sides of the product are held against the snap-fit ​​groove 513, which can effectively prevent the product from shifting during the punching process, improve the stability and accuracy of the product during the clamping process, and help ensure the quality of punching.

[0056] Optionally, the shape of the snap-fit ​​slot 513 can be designed in various ways according to the shape of common products. In addition to the common rectangle, it can also be designed as a trapezoid, arc, etc.

[0057] Optionally, an elastic buffer pad, such as polyurethane, can be provided inside the snap-fit ​​slot 513. This pad can better adapt to the shape of the product and provide a buffering effect during clamping, preventing the product from being damaged due to excessive clamping force.

[0058] Furthermore, the punch 30 includes a stamping part 31 and a connecting part 33 connected to each other. The cross-sectional shape of the stamping part 31 is adapted to the shape of the stamping hole 111. The stamping part 31 passes through the stamping hole 111 and is inserted into the punching space 113. The diameter of the connecting part 33 is larger than the diameter of the stamping hole 111.

[0059] Specifically, the stamping part 31 is adapted to the stamping hole 111 to realize the punching function. The diameter of the connecting part 33 is larger than the diameter of the stamping hole 111, which plays a limiting role, preventing the punch 30 from being over-inserted into the punching space 113, protecting the punch 30 and other parts of the fixture, and ensuring the stability of the punch 30 during the stamping process.

[0060] Optionally, the stamping part 31 and the connecting part 33 are connected by welding. To ensure the strength and stability of the connection, an argon arc welding process is used during welding. Multiple positioning holes are provided in the connecting part 33 for precise positioning when installing the punch 30, ensuring the concentricity of the punch 30 and the stamping hole 111, and improving stamping accuracy.

[0061] Furthermore, the end of the stamping part 31 away from the connecting part 33 has a double-layer structure, with the inner layer being alloy steel and the outer layer being a diamond coating.

[0062] Specifically, a composite punch 30 is developed, with the front end of the punch 30 using a combination of different materials, such as an outer layer of high-hardness diamond coating and an inner layer of high-strength alloy steel. This ensures both the wear resistance and sufficient strength of the punch 30, making it suitable for stamping various complex materials.

[0063] Optionally, the inner alloy steel layer can be made of high-strength chromium-molybdenum alloy steel. This type of steel has excellent comprehensive mechanical properties, which can improve the toughness of the punch 30 while ensuring strength, preventing breakage during the stamping process. The thickness of the diamond coating can be adjusted according to the actual application. For stamping materials with higher hardness, the coating thickness can be appropriately increased to improve wear resistance; for stamping softer materials, the coating thickness can be appropriately reduced to lower costs.

[0064] Furthermore, the hole wall of the stamping hole 111 is plated with hard chrome.

[0065] Specifically, the inner wall of the punching hole 111 undergoes special surface treatment, such as hard chrome plating or ceramic coating technology, to improve the wear resistance and smoothness of the hole wall, reduce the friction between the punch 30 and the hole wall, reduce the wear of the punch 30, and ensure the punching quality.

[0066] Optionally, before hard chrome plating, the hole wall of the stamping hole 111 can be pretreated by first grinding the surface to achieve a certain roughness standard, and then pickling to remove surface impurities. This improves the adhesion between the hard chrome plating layer and the hole wall. The thickness of the hard chrome plating layer is controlled between 0.05 and 0.1 mm to ensure sufficient wear resistance without affecting the dimensional accuracy of the stamping hole 111.

[0067] Furthermore, the punch seat 11 is connected to a movable adjusting ring, which encloses and forms a punch hole 111. The adjusting ring is adjusted to change the diameter of the punch hole 111.

[0068] Specifically, an adjustable diameter punch hole 111 structure is designed, which can be adjusted according to different hole diameter requirements through a built-in movable adjusting ring. When punching holes of different specifications, there is no need to replace the entire fixture, which greatly improves production efficiency and fixture versatility.

[0069] Optionally, the movable adjusting ring adopts a split structure, composed of multiple arc-shaped adjusting blocks. Each adjusting block is threaded onto the punch seat 11, and the inner diameter of the adjusting ring can be precisely adjusted by rotating the nut on the adjusting block. A scale marking is provided on the inner side of the adjusting ring, allowing operators to intuitively understand the diameter of the punch hole 111 and improving the accuracy of adjustment.

[0070] Furthermore, the punching fixture is also equipped with a liquid injection device 70, which is connected to the processing base 10, and the liquid outlet of the liquid injection device 70 is set towards the punch 30.

[0071] Specifically, a self-cleaning system is designed inside the punch 30. Through the built-in micro air pump or liquid jet device 70, the surface of the punch 30 is automatically cleaned after each punching to remove attached debris and impurities, thus avoiding the impact of debris accumulation on the punching quality and the life of the punch 30.

[0072] Optionally, the liquid spraying device 70 employs a high-pressure spray nozzle, which can evenly spray the cleaning fluid onto the surface of the punch 30, improving the cleaning effect. A specialized metal cleaner can be used as the cleaning fluid, effectively removing debris and impurities from the punch 30 without corroding its material. The liquid spraying device 70 is equipped with flow and pressure regulating valves, allowing operators to adjust the flow and pressure of the cleaning fluid according to actual conditions to achieve the best cleaning effect.

[0073] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A punching fixture, characterized in that, include: A processing base is connected to a punching seat, the punching seat has a punching space, the punching seat has a punching hole, the punching hole is connected to the punching space, and the cross-sectional shape of the punching hole is semi-circular. A punch, the cross-sectional shape of which is adapted to the shape of the punching hole, one end of which is connected to an external device, and the other end of which passes through the punching hole and is inserted into the punching hole space; A clamping assembly is movably connected to the processing base and close to the punching seat, and the clamping assembly is used to clamp the product.

2. The punching fixture according to claim 1, characterized in that, The clamping assembly includes two clamping seats arranged opposite each other. Both clamping seats are movably connected to the processing base and are located on both sides of the punching base, respectively.

3. A punching fixture according to claim 2, characterized in that, The processing base has two connecting holes, both of which extend along the extension direction of the processing base. The clamping seat is threadedly connected to the connecting holes by bolts.

4. A punching fixture according to claim 2, characterized in that, The processing base is connected to a slide rail, which extends along the extension direction of the processing base. The bottom of the clamping seat is recessed with a sliding groove that matches the slide rail.

5. A punching fixture according to claim 2, characterized in that, Each of the two clamping seats has a recessed snap-fit ​​groove on the side of its opposite sides near the top, and the two sides of the product are respectively held in the two snap-fit ​​grooves.

6. A punching fixture according to any one of claims 1 to 5, characterized in that, The punch includes a stamping part and a connecting part connected together. The cross-sectional shape of the stamping part is adapted to the shape of the stamping hole. The stamping part passes through the stamping hole and is inserted into the punching space. The diameter of the connecting part is larger than the diameter of the stamping hole.

7. A punching fixture according to claim 6, characterized in that, The end of the stamping part away from the connecting part has a double-layer structure, with the inner layer being alloy steel and the outer layer being a diamond coating.

8. A punching fixture according to any one of claims 1 to 5, characterized in that, The walls of the punched holes are plated with hard chrome.

9. A punching fixture according to any one of claims 1 to 5, characterized in that, The punching seat is connected to a movable adjusting ring, which encloses the punching hole. The adjusting ring is adjusted to change the diameter of the punching hole.

10. A punching fixture according to any one of claims 1 to 5, characterized in that, The punching fixture is also equipped with a liquid injection device, which is connected to the processing base and the liquid outlet of the liquid injection device is oriented towards the punch.

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