Material belt fixing structure and punching machine

Abstract

The utility model discloses a material strap fixing structure and a punching machine, the material strap fixing structure is used for the punching machine to process a material strap, the punching machine comprises an upper die and a lower die, the lower die comprises a material lifting plate, the material lifting plate is provided with a limiting groove, the limiting groove is arranged in an extending mode in the extending direction of the material lifting plate, the edge of the material strap is bent to form a buckling edge, and when the material strap is placed on the material lifting plate, the buckling edge is buckled on the limiting groove. And the buckling edge is buckled in the limiting groove. During stamping production, the buckling edge of the material belt is accurately buckled in the groove of the material lifting plate. Due to the fact that the buckling edge is limited in the groove, the degree of freedom of the material belt in the left-right direction is greatly reduced, and therefore left-right swinging of the material belt is effectively prevented. And meanwhile, the material lifting plate can also play a role in supporting the material belt in the stamping process, and deformation and shaking of the material belt caused by self gravity and stamping impact force are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of stamping processing, and in particular to a strip fixing structure and a punch press. Background Technology

[0002] In the stamping production process, the stability of the strip plays a crucial role in product quality and production efficiency. In traditional stamping operations, the strip often sways left and right due to a combination of factors, including the impact force during stamping, the strip's own tension, and equipment vibration. This swaying causes a misalignment between the stamping die and the strip, resulting in substandard dimensional accuracy and scrap. Furthermore, correcting the strip's position often requires frequent machine stops for adjustment, which not only severely impacts stamping efficiency but also increases production costs and the workload of workers. Utility Model Content

[0003] This invention aims to at least partially solve one of the problems in related technologies. Therefore, one objective of this invention is to provide a strip fixing structure to overcome the defect in existing technologies where the strip easily sways left and right during the stamping process, thereby improving the stability and efficiency of stamping production.

[0004] A strip fixing structure is provided for processing strips by a punch press. The punch press includes an upper die and a lower die. The lower die includes a lifting plate. The lifting plate has a limiting groove that extends along the extending direction of the lifting plate. The edge of the strip is bent to form a snap-fit ​​edge. When the strip is placed on the lifting plate, the snap-fit ​​edge is engaged in the limiting groove.

[0005] Furthermore, the width of the limiting groove is greater than the width of the fastening edge.

[0006] Furthermore, the height of the limiting groove is the same as the height of the fastening edge.

[0007] Furthermore, the bending angle of the buckle ranges from 90° to 135°.

[0008] Furthermore, the inner surface of the buckle is coated with a wear-resistant coating.

[0009] Furthermore, the end of the buckle is provided with a guide slope, which is inclined along the direction from the inner side to the outer side of the buckle toward the end.

[0010] Furthermore, the inclination angle of the guide ramp ranges from 30° to 60°.

[0011] Furthermore, the flange has a double or multi-layer structure, with each layer connected by means of bonding, welding, or nesting.

[0012] Furthermore, the inner wall of the limiting groove is coated with a lubricant.

[0013] This utility model also proposes a punch press, including a strip fixing structure as described above.

[0014] The technical solutions provided in this application have the following advantages compared with the prior art:

[0015] This application incorporates a limiting groove on the lifting plate corresponding to the edge of the strip. Through stamping or other suitable processing methods, the edge of the strip is bent inwards or outwards to form a flanged edge. During stamping, the flange of the strip is accurately fastened within the groove of the lifting plate. Because the flange is confined within the groove, the strip's lateral freedom is significantly reduced, effectively preventing lateral swaying. Simultaneously, the lifting plate also supports the strip during stamping, reducing deformation and swaying caused by the strip's own weight and the impact of stamping. Attached Figure Description

[0016] 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.

[0017] 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.

[0018] In the attached image:

[0019] Figure 1 This is a schematic diagram and a partial enlarged view of an embodiment of the material strip fixing structure of this application;

[0020] Figure 2 A schematic diagram and a partial enlarged view of another embodiment of the material strip fixing structure of this application;

[0021] Figure 3 These are a front view and a partial enlarged view of an embodiment of the material strip fixing structure of this application.

[0022] Figure label:

[0023] 1. A material strip fixing structure; 10. Lifting plate; 11. Limiting groove; 30. Material strip; 31. Fastening edge. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] like Figure 1 - Figure 3 As shown, this application provides a strip fixing structure 1 for punching strip 30. The punch includes an upper die and a lower die. The lower die includes a lifting plate 10. The lifting plate 10 has a limiting groove 11. The limiting groove 11 extends along the extending direction of the lifting plate 10. The edge of the strip 30 is bent to form a fastening edge 31. When the strip 30 is placed on the lifting plate 10, the fastening edge 31 is fastened in the limiting groove 11.

[0027] The lifting plate 10 is made of high-strength, wear-resistant and rigid metal material. Its shape and size are adapted to the worktable of the stamping equipment, and it can be stably installed on the worktable of the punch press and provide support for the strip 30.

[0028] A groove is machined on the lifting plate 10 at the position corresponding to the snap-fit ​​edge 31 of the strip 30. The width of the groove is slightly larger than the width of the snap-fit ​​edge 31 to ensure that the snap-fit ​​edge 31 can be smoothly embedded in the groove. The depth of the groove is reasonably set according to the thickness of the strip 30 and the height of the snap-fit ​​edge 31, so that after the snap-fit ​​edge 31 is embedded in the groove, the surface of the strip 30 can remain flush with or nearly flush with the surface of the lifting plate 10, avoiding additional damage to the strip 30 during the stamping process. The length of the groove is determined according to the stroke of the strip 30 during the stamping process to ensure that the snap-fit ​​edge 31 of the strip 30 can always maintain a good fit with the groove throughout the entire stamping process.

[0029] During stamping production, the retaining edge 31 of the strip 30 is accurately engaged within the groove of the lifting plate 10. Because the retaining edge 31 is confined within the groove, the freedom of the strip 30 in the left-right direction is significantly reduced, effectively preventing lateral swaying. Simultaneously, the lifting plate 10 also supports the strip 30 during stamping, reducing deformation and swaying caused by its own weight and stamping impact. Furthermore, appropriate surface treatments of the retaining edge 31 and the groove, such as polishing and applying lubricant, further reduce friction between the strip 30 and the lifting plate 10, allowing for smoother movement of the strip 30 within the groove and improving stamping efficiency. The related mating structures of the press provide overall assurance for the stable stamping of the strip 30, ensuring high precision and efficiency throughout the entire stamping process.

[0030] Before stamping, accurately embed the retaining edge 31 at the starting end of the strip 30 into the groove of the lifting plate 10, and check whether the tension of the strip 30 is appropriate. During the stamping process, regularly check the fit between the retaining edge 31 of the strip 30 and the groove of the lifting plate 10. If foreign matter enters the groove or the retaining edge 31 shows wear, stop the machine immediately for cleaning and repair to ensure the normal operation of the equipment. At the same time, adjust the parameters of the stamping equipment, such as stamping speed and pressure, in a timely manner according to the quality of the stamped product and the actual operating status of the strip 30 to further optimize the stamping effect.

[0031] Furthermore, the width of the limiting groove 11 is greater than the width of the fastening edge 31.

[0032] The width of the limiting groove 11 is greater than the width of the retaining edge 31. This design ensures that the retaining edge 31 of the strip 30 can be stably embedded in the groove during the stamping process, and the strip 30 will not easily fall out of the groove even under high-speed stamping and gravity. This design not only improves the stability of stamping, but also reduces production interruptions caused by poor movement of the strip 30, thereby improving production efficiency and product quality. In addition, the width design of the limiting groove 11 also allows for the absorption of thermal expansion of the strip 30 during the stamping process to a certain extent. This is especially important for long-term continuous operation, as it can prevent dimensional errors caused by temperature changes and ensure the dimensional accuracy of the stamped parts.

[0033] In practical applications, this structural design also offers the advantages of easy maintenance and replacement. When the retaining edge 31 wears out due to long-term use, it can be simply replaced without requiring complex adjustments or replacements to the lifting plate 10. This significantly reduces maintenance costs and time, and improves equipment efficiency. Furthermore, since the fit clearance between the retaining edge 31 and the limiting groove 11 can be adjusted appropriately, when using strips 30 of different thicknesses and materials, only the corresponding retaining edge 31 needs to be replaced, without modifying the entire lifting plate 10 structure. This facilitates rapid changeover in stamping production lines.

[0034] Furthermore, the height of the limiting groove 11 is consistent with the height of the fastening edge 31.

[0035] The height of the limiting groove 11 is consistent with the height of the retaining edge 31, ensuring the stability and positioning accuracy of the strip 30 during the stamping process. This design prevents the strip 30 from shifting during stamping, thus guaranteeing the quality of the stamped parts. Furthermore, this design of the limiting groove 11 effectively prevents the strip 30 from shifting due to vibration or impact during high-speed stamping, further improving the reliability of the stamping equipment.

[0036] In practical applications, this structural design also offers excellent maintainability. Because the limiting groove 11 and the retaining edge 31 are at the same height, the strip 30 can be quickly replaced when it becomes worn or damaged, without requiring complex adjustments to the press. This significantly reduces downtime and improves production efficiency. Simultaneously, this design simplifies the operation process, lowers the skill requirements for operators, and makes stamping operations easier and more convenient.

[0037] Regarding parameter adjustments for the stamping equipment, the height consistency between the limiting groove 11 and the retaining edge 31 provides convenience. Operators can fine-tune the position of the strip 30 by adjusting the position of the limiting groove 11 according to the specific requirements of the stamped part, thereby optimizing the stamping effect. This adjustment method is both precise and quick, helping to respond rapidly to market changes and meet the needs of different customers.

[0038] Furthermore, the bending angle of the snap edge 31 ranges from 90° to 135°.

[0039] The bending angle of the retaining edge 31 ranges from 90° to 135°. This design ensures that the retaining edge 31 has sufficient strength and stability when mating with the groove of the lifting plate 10. When the strip 30 is subjected to pressure during the stamping process, the appropriate bending angle can effectively prevent the retaining edge 31 from deforming or breaking, thereby ensuring the continuity of the stamping process and the service life of the strip 30. In addition, by precisely controlling the bending angle, the movement resistance of the strip 30 in the groove can be reduced, the stamping speed can be increased, and the heat generated by friction can be reduced, avoiding changes in material properties due to temperature rise, and further improving the quality of the stamped products.

[0040] In practical applications, the setting of the bending angle needs to take into account the physical properties of the material, the specifications of the stamping equipment, and the design requirements of the product. For example, for materials with high hardness and good toughness, the bending angle can be appropriately increased to enhance the tensile strength of the clasp 31; while for soft or ductile materials, the bending angle may need to be reduced to avoid unnecessary stress concentration during the stamping process.

[0041] Furthermore, the inner surface of the snap-edge 31 is coated with a wear-resistant coating.

[0042] Specifically, the coating material is a wear-resistant material such as tungsten carbide, titanium nitride, or ceramics to improve the wear resistance and service life of the snap-fit ​​31. Tungsten carbide coatings, due to their high hardness and good wear resistance, are suitable for stamping environments subjected to high pressure and high friction; titanium nitride coatings, due to their excellent corrosion resistance and high-temperature resistance, are suitable for stamping equipment that needs to operate under harsh conditions; and ceramic coatings, due to their lightweight and high hardness, are suitable for precision stamping applications with strict weight requirements. By rationally selecting and applying wear-resistant coatings, the overall performance of the snap-fit ​​31 can be significantly improved, its service life extended, thereby reducing production costs and increasing production efficiency.

[0043] Understandably, the thickness and uniformity of the wear-resistant coating directly affect the performance of the snap-fit ​​31. An excessively thin coating may result in insufficient wear resistance, while an excessively thick coating may cause peeling, affecting the overall performance. Therefore, precise process control is required to ensure uniform coating and achieve the optimal thickness. In actual production, techniques such as plasma spraying, thermal spraying, or chemical vapor deposition are typically used to achieve this. These techniques ensure good adhesion between the coating and the snap-fit ​​31 substrate, thus providing stable protection during the stamping process.

[0044] Furthermore, the end of the fastening edge 31 is provided with a guide slope, which is inclined along the direction from the inner side to the outer side of the fastening edge 31 toward the end.

[0045] Specifically, the design of the guide bevel not only improves the efficiency of the snap fastener 31 but also reduces wear on the mating structure to a certain extent. To further optimize the performance of the snap fastener 31, the inclination angle of the guide bevel is carefully calculated to ensure that the snap fastener 31 can smoothly slide into the mating structure during engagement, while maintaining sufficient contact area to withstand working pressure. Furthermore, the surface treatment of the guide bevel is also crucial; polishing or coating can further reduce the coefficient of friction, improving the durability and reliability of the snap fastener 31.

[0046] In practical applications, the design of the guide bevel also takes into account the characteristics of different materials. For example, for materials with high hardness, the inclination angle of the guide bevel can be appropriately increased to reduce material deformation and wear; while for materials with good toughness, the inclination angle may need to be reduced to avoid generating excessive stress during the fastening process. Through this design, the optimal performance of the fastening edge 31 can be ensured under various material and working conditions.

[0047] Furthermore, the inclination angle of the guide ramp ranges from 30° to 60°.

[0048] Specifically, within an inclination angle range of 30° to 60°, the fastening edge 31 can effectively reduce the impact force on the mating structure during fastening, thereby extending the service life of the entire strip fixing structure 1. At the same time, this inclination angle also ensures that the fastening edge 31 can maintain stable contact under working pressure, avoiding the problem of local stress concentration caused by insufficient contact area.

[0049] To further verify the rationality of this design, we conducted multiple experiments. The experimental results show that the sliding resistance of the snap-on edge 31 is minimal at tilt angles ranging from 30° to 60°, and it exhibits high stability during repeated snap-on operations. This indicates that this tilt angle range not only meets the structural strength requirements but also takes into account the convenience and efficiency of operation.

[0050] Furthermore, we considered the impact of different working environments on the guide bevel. In environments with high humidity or corrosive media, the surface treatment of the guide bevel is particularly important. By employing special coating technologies, we can significantly improve the corrosion resistance and wear resistance of the guide bevel, thereby ensuring that the performance of the snap-fit ​​31 is not affected in harsh environments. For example, using a carbide coating can effectively prevent wear on the guide bevel, while using a Teflon coating can reduce friction between the snap-fit ​​31 and the guide bevel, further improving the service life and operational smoothness of the snap-fit ​​31.

[0051] Furthermore, the flange has a double or multi-layer structure, with each layer connected by bonding, welding, or nesting.

[0052] The flange has a double or multi-layer structure, with each layer connected by bonding, welding, or nesting. Optionally, the thickness and material of each layer can be the same or different to meet the strength and performance requirements of the flange 31 under different working conditions. For example, in conditions requiring higher strength, a combination of different materials can be used, such as using a more corrosion-resistant material for the outer layer and a high-strength metal material for the inner layer. This structural design not only improves the overall performance of the flange 31 but also allows for customized adjustments according to actual application needs.

[0053] In practical implementation, we also considered the shape design of the snap fastener 31. By optimizing the geometry of the snap fastener 31, the amount of material used can be further reduced while maintaining or improving its structural strength. For example, by adopting a wavy or serrated snap fastener 31 design, the tensile and shear strength of the snap fastener 31 can be increased through special shape design without adding extra material. In addition, this design can also absorb and disperse impact forces to a certain extent, thereby improving the stability and durability of the snap fastener 31 under dynamic loads.

[0054] During the manufacturing process, we also paid close attention to the machining accuracy and surface treatment of the snap fastener 31. Through precise machining techniques, we ensured the dimensional accuracy and shape consistency of the snap fastener 31, thereby guaranteeing its reliability and consistency in practical applications. For surface treatment, we adopted various techniques, such as sandblasting, polishing, and plating, to improve the wear resistance and corrosion resistance of the snap fastener 31 and extend its service life.

[0055] Furthermore, the inner wall of the limiting groove 11 is coated with a lubricant.

[0056] The inner wall of the limiting groove 11 is coated with lubricant, which not only reduces the frictional resistance of the strip 30 during movement but also effectively extends the service life of the limiting groove 11. The surfaces of the retaining edge 31 and the groove are polished and coated with lubricant to reduce the friction between the strip 30 and the lifting plate 10. These measures ensure the smooth operation of the strip 30 at high speeds, reduce heat accumulation caused by friction, and thus prevent thermal deformation and wear of the material. Furthermore, the use of lubricant reduces noise, providing a quieter working environment for operators. In practical applications, this design significantly improves the efficiency and precision of the punch press while reducing maintenance costs and downtime. Through these detailed optimizations, we not only improve product performance but also enhance the user experience, further consolidating the product's market position.

[0057] This utility model also proposes a punch press, which includes a strip fixing structure 1. The specific structure of the strip fixing structure 1 is as described in the above embodiments. Since this punch press adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0058] 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 strip fixing structure for processing strip material in a punch press, the punch press including an upper die and a lower die, the lower die including a lifting plate, characterized in that, The lifting plate has a limiting groove that extends along the extension direction of the lifting plate. The edge of the material strip is bent to form a snap-on edge. When the material strip is placed on the lifting plate, the snap-on edge is engaged in the limiting groove.

2. The material strip fixing structure according to claim 1, characterized in that, The width of the limiting groove is greater than the width of the buckle.

3. The material strip fixing structure according to claim 1, characterized in that, The height of the limiting groove is the same as the height of the fastening edge.

4. The material strip fixing structure according to claim 1, characterized in that, The bending angle of the buckle ranges from 90° to 135°.

5. The material strip fixing structure according to claim 1, characterized in that, The inner surface of the buckle is coated with a wear-resistant coating.

6. The material strip fixing structure according to claim 1, characterized in that, The end of the buckle is provided with a guide slope, which is inclined along the direction from the inner side to the outer side of the buckle toward the end.

7. The material strip fixing structure according to claim 6, characterized in that, The inclination angle of the guide ramp ranges from 30° to 60°.

8. The material strip fixing structure according to claim 1, characterized in that, The fastening edge has a double or multi-layer structure, with each layer connected by bonding, welding or nesting.

9. The material strip fixing structure according to claim 1, characterized in that, The inner wall of the limiting groove is coated with lubricant.

10. A punch press, characterized in that, Includes a strip fixing structure as described in any one of claims 1 to 9.

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