Continuous stamping die

Abstract

The utility model discloses a continuous stamping die which comprises a lower die holder and an upper die holder, and a base is arranged below the lower die holder. A lower die plate is arranged at the upper end of the lower base plate; an upper padding plate is arranged at the lower end of the upper die base, and an upper die plate is arranged below the upper padding plate; the lower die plate is provided with a plurality of forming stations, and the upper die plate is provided with a plurality of forming punches in one-to-one correspondence with the forming stations. A plurality of forming stations are arranged on the lower die plate, and the forming punches in one-to-one correspondence with the forming stations are arranged on the upper die plate, so that continuous and step-by-step punching procedures are realized; meanwhile, the positioning holes formed in the middle of the lower die plate at equal intervals in the length direction of the lower die plate are matched with the positioning columns in the middle of the upper die plate, so that the problem of deviation of the metal sheets in the conveying and feeding process is effectively solved, the stamping precision and the product quality are remarkably improved, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a continuous stamping die. Background Art

[0002] In the automotive parts processing industry, traditional production methods rely primarily on single-step engineering dies for stamping. This approach has numerous drawbacks, including cumbersome processes, high labor and material investment, and low production efficiency due to the need for multiple machines. To overcome these limitations, progressive die technology has emerged, aiming to significantly improve production efficiency through a continuous, step-by-step stamping process.

[0003] While existing progressive stamping dies have reduced the transition time between processes to a certain extent, they still face some key challenges. One significant issue is insufficient positioning. During the progressive stamping process, the metal sheet needs to be moved at a fixed distance until the product is completed. However, because the metal sheet extends too long during the stamping process, the upper and lower dies are prone to vibration during the stamping process, causing the metal sheet to easily shift during the feeding process, which in turn affects the stamping quality. Furthermore, existing progressive stamping dies lack a buffering design when clamping the metal sheet, which can easily damage the clamping equipment during the stamping process, resulting in reduced stamping efficiency. Summary of the Invention

[0004] The purpose of the present utility model is to provide a continuous stamping die to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A continuous stamping die comprises a lower die base and an upper die base, wherein a base is provided under the lower die base; a lower pad is provided at the upper end of the lower die base, wherein a lower template is provided at the upper end of the lower pad; an upper pad is provided at the lower end of the upper die base, wherein an upper template is provided under the upper pad; a plurality of forming stations are provided on the lower template, wherein the upper template is provided with a plurality of forming punches corresponding to the forming stations one by one; the forming stations include a first punching station, a side cutting station, a first bending station, a second bending station, a third bending station, a second punching station and a chamfering cutting station; the forming punches include a first hole position punch, a side cutting punch, a first bending punch, a second bending punch, a third bending punch, a second hole position punch and a chamfering cutting punch; a plurality of positioning holes are equidistantly provided in the middle of the lower template along its length direction, wherein a plurality of positioning columns are equidistantly provided in the middle of the upper template along its length direction, and the positioning columns are arranged corresponding to the positioning holes.

[0007] Preferably, the lower template is symmetrically provided with material guide plates on both sides close to the first punching station, wherein a material guide groove is provided on the lower inner side of the material guide plate.

[0008] Preferably, limit blocks are symmetrically provided on both sides of the third bending station, wherein the inner wall of the limit block abuts against the outer wall of the third bending punch.

[0009] Preferably, a plurality of blanking holes are provided on the lower pad, wherein the blanking holes are respectively connected to the first punching station, the side cutting station, the second punching station and the chamfering cutting station.

[0010] Preferably, a plurality of positioning rods are provided between the upper pad and the upper mold base, wherein the lower end of the positioning rod is fixedly connected to the upper pad, and the upper end of the positioning rod is movably connected to the upper mold base; a rectangular spring is provided on the outer wall of the positioning rod, wherein the two ends of the rectangular spring are respectively in contact with the upper pad and the upper mold base.

[0011] Preferably, the four corners of the upper die base are movably connected with guide pillars, wherein the guide pillars pass through the upper pad and extend downward to be fixedly connected to the lower pad.

[0012] Preferably, a receiving groove is provided at the upper end of the base, wherein a waste recovery box is installed in the receiving groove; the waste recovery box is located below the lower pad, wherein the upper end of the waste recovery box is connected to the drop hole.

[0013] Preferably, rollers are provided at the four corners of the lower end of the base, and supporting foot cups are provided side by side on one side of the rollers.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention realizes a continuous and step-by-step stamping process by arranging multiple forming stations on the lower template and arranging forming punches corresponding to the forming stations on the upper template; at the same time, the positioning holes equidistantly opened in the middle of the lower template along its length direction are adapted to the positioning columns in the middle of the upper template, which effectively solves the problem of offset of metal sheets during the transmission and feeding process, and significantly improves the stamping accuracy and product quality; the positioning rod and rectangular spring arranged between the upper pad and the upper die seat play a buffering role, which reduces the impact on the clamping equipment during the stamping process and extends the service life of the mold; a waste recovery box is installed on the upper end of the base, wherein the waste recovery box is located under the lower pad and connected to the blanking hole, which realizes the automatic recovery and processing of punching waste, reduces the trouble of manual cleaning, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the exploded structure of the punching die of the utility model;

[0017] Figure 3 This is a structural diagram of the lower die base of the utility model;

[0018] Figure 4 This is a schematic diagram of the bottom structure of the lower die base of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the upper die base of the utility model.

[0020] Among them: 1. Lower die base; 2. Upper die base; 3. Base; 4. Lower pad; 5. Lower template; 6. Upper pad; 7. Upper template; 8. First punching station; 9. Side cutting station; 10. First bending station; 11. Second bending station; 12. Third bending station; 13. Second punching station; 14. Chamfering and cutting station; 15. First hole punch; 16. Side cutting punch; 17. First Bending punch; 18. Second bending punch; 19. Third bending punch; 20. Second hole punch; 21. Chamfering punch; 22. Positioning hole; 23. Positioning column; 24. Guide plate; 25. Guide trough; 26. Limit block; 27. Blanking hole; 28. Positioning rod; 29. Rectangular spring; 30. Guide column; 31. Receiving groove; 32. Waste recycling box; 33. Roller; 34. Support foot cup. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings.

[0022] Please refer to Figures 1 to 5 To achieve the above objectives, the present invention provides the following technical solutions:

[0023] A continuous stamping die comprises a lower die base 1 and an upper die base 2, wherein a base 3 is provided below the lower die base 1, and the base 3 is used to fix and support the entire die; a lower pad 4 is provided at the upper end of the lower die base 1, wherein a lower template 5 is provided at the upper end of the lower pad 4, and the lower pad 4 plays the role of buffering and supporting the lower template 5; an upper pad 6 is provided at the lower end of the upper die base 2, wherein an upper template 7 is provided below the upper pad 6, and the upper pad 6 plays the role of buffering and supporting the upper template 7; a plurality of forming stations are provided on the lower template 5, and each forming station is responsible for different stamping operations, wherein a plurality of The forming stations correspond to forming punches one by one, and the forming punches cooperate with the forming stations to perform specific stamping actions; the forming stations include a first punching station 8, a side cutting station 9, a first bending station 10, a second bending station 11, a third bending station 12, a second punching station 13 and a chamfering cutting station 14, wherein the first punching station 8 is used to punch the initial holes; the side cutting station 9 is responsible for cutting the side of the metal sheet; the first bending station 10, the second bending station 11, and the third bending station 12 perform different degrees of bending operations on the metal sheet respectively; the second The punching station 13 is used to punch a second hole on the metal sheet; the chamfering and cutting station 14 is used to chamfer and cut the metal sheet to form the required edge shape; the forming punch includes a first hole punch 15, a side cutting punch 16, a first bending punch 17, a second bending punch 18, a third bending punch 19, a second hole punch 20 and a chamfering and cutting punch 21, wherein the first hole punch 15 corresponds to the first punching station 8 and is used to perform a punching operation; the side cutting punch 16 corresponds to the side cutting station 9 and is used to perform side cutting; the first bending punch 17, the second The bending punch 18 and the third bending punch 19 correspond to the three bending stations respectively, and are used to perform bending operations on the metal sheets to different degrees; the second hole punch 20 corresponds to the second punching station 13, and is used to punch the second hole; the chamfering and cutting punch 21 corresponds to the chamfering and cutting station 14, and is used to perform chamfering and cutting operations; a plurality of positioning holes 22 are equidistantly provided in the middle of the lower template 5 along its length direction, wherein a plurality of positioning columns 23 are equidistantly provided in the middle of the upper template 7 along its length direction, and the positioning columns 23 correspond one-to-one to the positioning holes 22 respectively, to ensure precise positioning during the stamping process.

[0024] Please refer to Figure 2 、 Figure 3 As an embodiment of the present invention, the lower template 5 is symmetrically provided with guide plates 24 on both sides close to the first punching station 8, wherein a guide groove 25 is opened on the lower inner side of the guide plate 24.

[0025] In the above-described scheme, the main function of the guide plate 24 is to guide the metal sheet to smoothly enter the first punching station 8. During the stamping process, the metal sheet needs to be accurately fed into each station to ensure the accuracy and efficiency of stamping; the guide plate 24 ensures that the metal sheet can maintain the correct direction and position when it is fed into the first punching station 8 through its specific shape and position, thereby avoiding offset or misalignment; before the metal sheet enters the first punching station 8, the guide plate 24 provides support for it to ensure that the metal sheet remains stable before stamping; at the same time, the guide trough 25 can also guide the metal sheet to smoothly enter the next station, ensuring the smooth progress of continuous stamping.

[0026] Please refer to Figure 3 、 Figure 5 As an embodiment of the present invention, limit blocks 26 are symmetrically provided on both sides of the third bending station 12 , wherein the limit blocks 26 abut against the outer wall of the third bending punch 19 on the side close to the third bending station 12 .

[0027] In the above-described scheme, the limit block 26 abuts against the outer wall of the third bending punch 19 through its inner wall, effectively limiting the stroke of the third bending punch 19 during the stamping process, which ensures that the third bending punch 19 stops moving after reaching the predetermined position, thereby avoiding damage to the metal sheet or mold caused by excessive stamping; the existence of the limit block 26 enables each bending operation to achieve the same depth and angle, thereby ensuring the accuracy and consistency of the bent parts, which is especially important for products that require high-precision bent parts; during the bending process, the metal sheet may be subjected to a large impact force and vibrate or deflect, and the limit block 26 reduces the possibility of such vibration and deflection by limiting the stroke of the bending punch, thereby improving the stability of the mold during the stamping process.

[0028] Please refer to Figure 3 、 Figure 4 As an embodiment of the present utility model, the first punching station 8, the side cutting station 9, the second punching station 13 and the chamfering cutting station 14 are through-hole structures passing through the lower template 5, wherein the lower pad 4 is respectively provided with blanking holes 27 connected to the first punching station 8, the side cutting station 9, the second punching station 13 and the chamfering cutting station 14.

[0029] In the above-mentioned scheme, the first punching station 8 is responsible for performing the initial punching operation on the metal sheet. When the mold is closed, the first hole punch 15 located on the upper template 7 passes through the through hole of the first punching station 8 of the lower template 5, and then performs the punching operation on the metal sheet. The waste generated during the punching process directly falls into the waste recovery box 32 through the corresponding blanking hole 27 on the lower pad 4, ensuring that the waste can be discharged from the mold in time; the side cutting station 9 is used to cut the side of the metal sheet. Similarly, when the mold is closed, the side cutting punch 16 located on the upper template 7 passes through the through hole of the lower template 5, and then accurately cuts the side of the metal sheet. The waste generated by cutting is also discharged from the mold through the blanking hole 27 on the lower pad 4. This design It helps to keep the inside of the mold clean and the stamping process continuous; after the metal sheet is initially punched, side cut and bent, it will be transferred to the second punching station 13 for further punching operations. The working principle of the second punching station 13 is similar to that of the first punching station 8; the chamfering and cutting station 14 is used to chamfer the edges of the metal sheet to improve the aesthetics and safety of the product. When the mold is closed, the chamfering and cutting punch 21 located on the upper template 7 passes through the through hole of the lower template 5, and then cuts and chamfers the edge of the metal sheet; the waste generated during the chamfering and cutting process will also be discharged from the mold through the blanking hole 27 on the lower pad 4. This design helps to keep the mold clean and the stamping process smooth.

[0030] See also Figure 2 As an embodiment of the present utility model, a plurality of positioning rods 28 are provided between the upper pad 6 and the upper die base 2, wherein the lower end of the positioning rod 28 is fixedly connected to the upper pad 6, and the upper end of the positioning rod 28 is movably connected to the upper die base 2; a rectangular spring 29 is sleeved on the outer wall of the positioning rod 28, wherein the two ends of the rectangular spring 29 are respectively in contact with the upper pad 6 and the upper die base 2.

[0031] In the above-mentioned scheme, the main function of the positioning rod 28 is to ensure the accurate positioning of the upper pad 6 and the upper die base 2 during the stamping process. Through the connection of the positioning rod 28, the upper pad 6 can be stably fixed under the upper die base 2 to ensure that the relative positions of various components during stamping are accurate; during the stamping process, the stamping force exerted on the upper die base 2 will be transmitted to the upper pad 6 through the positioning rod 28, and then transmitted to other parts of the mold, such as the punch or cutting tool, by the upper pad 6, thereby completing the stamping operation; the rectangular spring 29 is sleeved on the outer wall of the positioning rod 28, and its two ends are respectively in contact with the upper pad 6 and the upper die base 2. During the stamping process, the rectangular spring 29 can play a buffering role, absorb part of the impact energy, and reduce the vibration and noise generated during stamping; the rectangular spring 29 can also maintain The pressure is stable during the stamping process. When the stamping force changes, the rectangular spring 29 can absorb or release energy through its elastic deformation, thereby maintaining the relative stability of the stamping force and improving the quality of the stamped parts. After the stamping is completed, the rectangular spring 29 can also assist the upper die base 2 and the upper pad 6 to reset. When the stamping force disappears, the rectangular spring 29 will release its stored energy and push the upper die base 2 and the upper pad 6 back to the initial position to prepare for the next stamping. By arranging a positioning rod 28 and a rectangular spring 29 between the upper pad 6 and the upper die base 2, it is convenient to play multiple roles in the continuous stamping die, such as precise positioning, transmitting stamping force, providing buffering, maintaining pressure stability and assisting reset. This design ensures the smooth progress of the stamping process and the high-quality output of stamped parts.

[0032] Please refer to Figure 1 、 Figure 2 As an embodiment of the present invention, the four corners of the upper die base 2 are movably connected with guide pillars 30, wherein the guide pillars 30 pass through the upper pad 6 and extend downward to be fixedly connected to the lower pad 4.

[0033] In the above-described scheme, the guide column 30 passes through the upper pad 6 and extends downward to be fixedly connected to the lower pad 4, forming a stable guide system; during the stamping process, the upper die base 2 will move up and down with the slider of the punch press, and the guide column 30 ensures that the upper die base 2 moves along a predetermined trajectory, preventing deviation and shaking, thereby ensuring the accuracy of the stamped parts; the guide columns 30 also play a certain supporting role, they share the weight of the upper die base 2 and its upper components, reduce the burden on other supporting structures, and help improve the overall stability and service life of the mold; through the fixed connection with the lower pad 4, the guide columns 30 also play a positioning role, they ensure that the relative position relationship between the upper die base 2 and the lower die base 1 is always maintained in the design state, avoiding quality problems of stamping parts caused by position deviation.

[0034] See also Figure 1As an embodiment of the present invention, a receiving groove 31 is provided at the upper end of the base 3, wherein a waste recovery box 32 is installed in the receiving groove 31; the waste recovery box 32 is located below the lower pad 4, wherein the upper end of the waste recovery box 32 is provided with an opening and is connected to the drop hole 27.

[0035] In the above-described scheme, the accommodating groove 31 is opened at the upper end of the base 3, and its main function is to provide an installation space for accommodating and fixing the waste recycling box 32; the shape and size of the accommodating groove 31 match the waste recycling box 32 to ensure that the waste recycling box 32 can be accurately and stably installed in the predetermined position; the main function of the waste recycling box 32 is to collect waste generated during the stamping process, which includes round pieces produced by punching, scraps produced by cutting, etc.; the upper end of the waste recycling box 32 is open and connected to the blanking hole 27 on the mold lower plate 4. This design allows the waste to fall smoothly from the blanking hole 27 into the waste recycling box 32. When the waste accumulates to a certain amount, the waste recycling box 32 can be taken out of the accommodating groove 31 for cleaning and recycling.

[0036] See also Figure 1 As an embodiment of the present invention, rollers 33 are respectively provided at the four corners of the lower end of the base 3, wherein a supporting foot cup 34 is provided side by side on one side of each roller 33.

[0037] In the above-described solution, the design of the roller 33 enables the entire equipment or mold to be easily moved on the ground without the use of heavy lifting equipment or a large amount of manpower, which is particularly important for production environments that require frequent adjustments to position or layout; through the rotation of the roller 33, the operator can accurately move the equipment or mold to the desired position and quickly position it, which improves production efficiency and flexibility; when the equipment or mold is moved to the specified position, the support foot cup 34 can provide stable support force to prevent the equipment from shaking or tilting during operation, which ensures the stability and safety of the production process; the support foot cup 34 has a height adjustment function, allowing the operator to adjust the height of the equipment according to the unevenness of the ground or equipment requirements, which helps to maintain the levelness of the equipment and improve processing accuracy and product quality; according to changes in production needs, the operator can flexibly switch working modes between the roller 33 and the support foot cup 34. This design enables the equipment to be easily moved and positioned, and to remain stable and safe during operation.

[0038] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A continuous stamping die, comprising a lower die base (1) and an upper die base (2), wherein a base (3) is provided below the lower die base (1); a lower pad (4) is provided at the upper end of the lower die base (1), wherein a lower template (5) is provided at the upper end of the lower pad (4); an upper pad (6) is provided at the lower end of the upper die base (2), wherein an upper template (7) is provided below the upper pad (6); characterized in that, The lower template (5) is provided with a plurality of forming stations, wherein the upper template (7) is provided with a plurality of forming punches corresponding to the forming stations one by one; the forming stations include a first punching station (8), a side cutting station (9), a first bending station (10), a second bending station (11), a third bending station (12), a second punching station (13) and a chamfering cutting station (14); the forming punches include a first hole punch (15), a side cutting punch (16), a first bending punch (17), a second bending punch (18), a third bending punch (19), a second hole punch (20) and a chamfering cutting punch (21); a plurality of positioning holes (22) are equidistantly provided in the middle of the lower template (5) along its length direction, wherein a plurality of positioning columns (23) are equidistantly provided in the middle of the upper template (7) along its length direction, and the positioning columns (23) are arranged corresponding to the positioning holes (22).

2. A continuous stamping die according to claim 1, characterized in that: The lower template (5) is symmetrically provided with material guide plates (24) on both sides close to the first punching station (8), wherein a material guide groove (25) is provided at the lower inner side of the material guide plate (24).

3. A continuous stamping die according to claim 1, characterized in that: Limiting blocks (26) are symmetrically arranged on both sides of the third bending station (12), wherein the inner wall of the limiting block (26) abuts against the outer wall of the third bending punch (19).

4. A continuous stamping die according to claim 1, characterized in that: The lower pad (4) is provided with a plurality of blanking holes (27), wherein the blanking holes (27) are respectively connected to the first punching station (8), the side cutting station (9), the second punching station (13) and the chamfering cutting station (14).

5. A continuous stamping die according to claim 1, characterized in that: A plurality of positioning rods (28) are provided between the upper pad (6) and the upper die seat (2), wherein the outer walls of the positioning rods (28) are sleeved with rectangular springs (29).

6. A continuous stamping die according to claim 5, characterized in that: The four corners of the upper die seat (2) are movably connected to guide pillars (30), wherein the guide pillars (30) penetrate the upper pad (6) and extend downward to be fixedly connected to the lower pad (4).

7. The continuous stamping die according to claim 1, characterized in that: The upper end of the base (3) is provided with a receiving groove (31), wherein a waste recycling box (32) is installed in the receiving groove (31).

8. A continuous stamping die according to claim 7, characterized in that: Rollers (33) are respectively provided at the four corners of the lower end of the base (3), wherein a supporting foot cup (34) is arranged side by side on one side of the roller (33).

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