A continuous die for processing irregularly shaped belt bending structures

Abstract

This utility model discloses a progressive die for processing irregularly shaped strip bending structures, relating to the field of stamping die technology. It includes an upper die base and a lower die base, which cooperate with each other and can move relative to each other. A lower die core is provided on the lower die base, and a punching station, a bending station, and a cutting station are sequentially arranged between the lower die core and the upper die base. A punching punch, a bending punch, and a cutting punch are sequentially arranged at the lower end of the upper die base. The lower die core has a blanking hole corresponding to the punching punch, an arc-shaped blanking hole corresponding to the cutting punch, and a clearance groove corresponding to the bending punch. Through the punching of the strip-shaped blank, the workpiece is first formed into two parts, and then the bending process and the punching of the semi-circular end cap are performed sequentially. This not only allows the semi-circular end cap to be punched and formed in one step, but also simultaneously completes the strip removal from the workpiece, ensuring a complete and smooth cut surface of the semi-circular end cap and improving the production quality of the workpiece.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a progressive die for processing irregularly shaped structures with bending features. Background Technology

[0002] Stamping dies are process equipment used to separate or form materials. Their core processes are divided into two categories: blanking and forming. Blanking separates materials through dies, including separation processes such as cutting, punching, and trimming. The stamping process includes more than twenty specific processes, such as cutting, grooving, and shaping, each corresponding to different processing purposes. Dies are usually classified into single-operation dies and progressive dies according to their structure: a single-operation die completes one operation in one pressure stroke; a progressive die forms materials step by step through multiple stations.

[0003] When producing metal workpieces with different characteristics, since most of them require punching and bending shaping at the same time, progressive dies are often used to complete the process.

[0004] When producing a metal part with a symmetrical bend and a semi-circular end cap, since the semi-circular end cap is at the front end of the material strip's feeding direction, if the semi-circular end cap is punched first during processing, the connection relationship of the material strip cannot be maintained, resulting in the material strip's feeding being disordered. Therefore, segmented punching is required. The arcs at both ends are punched out, leaving a part at the end for connection. After the bend is shaped, it is punched off. However, the segmented punching method is prone to slight errors at the punching connection point, resulting in the arc surface not forming a complete and smooth surface.

[0005] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a continuous die for processing irregularly shaped bent structures, comprising an upper die base and a lower die base, the upper die base and the lower die base cooperating with each other and capable of relative movement, a lower die core being provided on the lower die base, and a punching station, a bending station and a cutting station being sequentially provided between the lower die core and the upper die base; a punching punch, a bending punch and a cutting punch being sequentially provided at the lower end of the upper die base, and a blanking hole corresponding to the punching punch, an arc-shaped blanking hole corresponding to the cutting punch and a clearance groove corresponding to the bending punch being provided on the lower die core; In this process, the workpiece is punched by a punching punch at the punching station, which causes a fracture to form on both sides of the workpiece. The two ends of the fracture are the bending forming part and the semi-circular end forming part, respectively.

[0008] As a further embodiment of this utility model: the lower die core is also provided with a groove that communicates with the arc-shaped material hole and the relief groove, for the bending part to be pushed forward.

[0009] As a further embodiment of this utility model: the lower end of the upper mold base is also provided with a punching post, and the lower mold core is provided with a round hole for the punching post.

[0010] As a further embodiment of this utility model: the upper end of the punching punch, bending punch, cutting punch and punching column are all provided with mounting blocks, and the mounting blocks are installed on the upper die base.

[0011] As a further embodiment of this utility model: a pressure plate is provided between the upper mold base and the lower mold core, and a sliding post is provided at each of the four corners of the pressure plate. A sliding sleeve corresponding to the sliding post is provided on the upper mold base, and a limit ring is provided after the top of the sliding post passes through the drawing.

[0012] As a further embodiment of this utility model: mounting posts are provided at the upper end of the upper mold base and the lower end of the lower mold base.

[0013] As a further embodiment of this utility model: guide sleeves are provided at the four corners of the lower end of the upper mold base, and guide rods corresponding to the guide sleeves are provided at the four corners of the lower mold base, with the guide rods cooperating with the guide sleeves for guidance.

[0014] Compared with the existing technology, the beneficial effects of this technical solution are as follows: During the material strip feeding process, the punching punch at the punching station first punches strip-shaped cuts on both sides of the workpiece, and the workpiece is divided into two parts by using the strip-shaped cuts: a bending forming part for forming the bending part and a head forming part for forming the semi-circular head. The bending punch at the bending station punches out the bending part on the workpiece through the relief groove opened on the lower die core. Finally, the punching punch at the punching station punches out the semi-circular head while separating the workpiece separately and pushing it out along the feeding direction. In summary, this utility model, through the punching of a strip-shaped cut, first forms the workpiece into two parts, and then performs bending and punching of the semi-circular head in sequence. This not only allows the semi-circular head to be punched and formed in one go, but also completes the unloading of the workpiece from the material strip at the same time, ensuring that the cut surface of the semi-circular head is complete and smooth, thus improving the production quality of the workpiece.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] 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, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the lower mold core of this utility model; Figure 4 This is a schematic diagram of the structure of the pressure plate of this utility model; The corresponding labels in the attached diagram are explained as follows: 1. Upper die holder; 2. Lower die holder; 3. Lower die core; 4. Punch; 5. Bending punch; 6. Cutting punch; 7. Cutting hole; 8. Arc-shaped hole; 9. Relief groove; 10. Groove; 11. Punching post; 12. Round hole; 13. Mounting block; 14. Pressure plate; 15. Sliding post; 16. Sliding sleeve; 17. Limiting ring; 18. Mounting post; 19. Guide sleeve; 20. Guide rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 A progressive die for processing irregularly shaped bent structures includes an upper die base 1 and a lower die base 2. The upper die base 1 and the lower die base 2 cooperate with each other and can move relative to each other. A lower die core 3 is provided on the lower die base 2. A punching station, a bending station and a cutting station are arranged sequentially between the lower die core 3 and the upper die base 1. A punching punch 4, a bending punch 5 and a cutting punch 6 are arranged sequentially at the lower end of the upper die base 1. A break-out material hole 7 corresponding to the punching punch 4, an arc-shaped material hole 8 corresponding to the cutting punch 6 and a relief groove 9 corresponding to the bending punch 5 are opened on the lower die core 3. In this process, the workpiece is punched by the punching punch 4 at the punching station, which forms a fracture on both sides of the workpiece. The two ends of the fracture are the bending forming part and the semi-circular end forming part, respectively.

[0020] Specifically, during the material feeding process, the punching punch 4 at the punching station first punches strip-shaped cuts on both sides of the workpiece, creating two parts using the strip-shaped cuts: a bending forming part for forming the bending part and a head forming part for forming the semi-circular head. The bending punch 5 at the bending station punches out the bending part on the workpiece through the relief groove 9 opened on the lower die core 3. Finally, the punching punch 6 at the punching station punches out the semi-circular head while separating the workpiece separately and pushing it out along the feeding direction. During the processing, the waste material generated by punching can be discharged through the cut-out material hole 7 and the arc-shaped material hole 8 on the lower die core 3, so as to avoid affecting the processing. In summary, this utility model, through the punching of a strip-shaped cut, first forms the workpiece into two parts, and then performs bending and punching of the semi-circular head in sequence. This not only allows the semi-circular head to be punched and formed in one go, but also completes the unloading of the workpiece from the material strip at the same time, ensuring that the cut surface of the semi-circular head is complete and smooth, thus improving the production quality of the workpiece.

[0021] Based on the above embodiments, it is further proposed that the lower mold core 3 is also provided with a groove 10 that communicates with the arc-shaped material hole 8 and the relief groove 9 for the bending part to be pushed forward.

[0022] Specifically, after the stamping of the bent section is completed, the strip continues to advance, and the formed bent section is continuously advanced through the groove 10 until it is separated from the lower die core 3.

[0023] Based on the above embodiments, it is further proposed that the lower end of the upper mold base 1 is also provided with a punching post 11, and the lower mold core 3 is provided with a round hole material hole 12 for the punching post 11; the punching post 11 can be used to punch out a round hole on the workpiece, while the round hole material hole 12 is used to discharge waste material.

[0024] Preferably, the lower die holder 2 has holes (not shown in the figure) for the cut-off material hole 7, the arc-shaped material hole 8, and the round material hole 12, so that the waste material is discharged to the bottom for easy collection and processing.

[0025] Based on the above embodiments, it is further proposed that the upper ends of the punching punch 4, the bending punch 5, the punching punch 6, and the punching column 11 are all provided with mounting blocks 13, and the mounting blocks 13 are installed on the upper mold base 1.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, the punching punch 4, bending punch 5, cutting punch 6 and punching post 11 can be fixedly installed at the lower end of the upper die base 1 by means of mounting block 13, such as bolt fixing.

[0027] Based on the above embodiments, it is further proposed that a pressure plate 14 is provided between the upper mold base 1 and the lower mold core 3, and a sliding post 15 is provided at each of the four corners of the pressure plate 14. A sliding sleeve 16 corresponding to the sliding post 15 is provided on the upper mold base 1. A limit ring 17 is provided after the top of the sliding post 15 passes through the sliding sleeve 16. The pressure plate 14 is provided with through holes corresponding to the punching punch 4, bending punch 5, punching punch 6 and punching post 11, so that the pressure plate 14 can move relative to the punching punch 4, bending punch 5, punching punch 6 and punching post 11.

[0028] Specifically, when the upper die holder 1 and the lower die holder 2 are closed, the pressure plate 14 can first contact and press down on the strip. Since the sliding pins 15 at the four corners of the pressure plate 14 are in sliding fit with the sliding sleeves 16 on the upper die holder 1, the upper die holder 1 can drive the punching punch 4, bending punch 5, punching punch 6 and punching pin 11 to continue pressing down without being affected until one stamping is completed. By using the pre-pressing of the pressure plate 14, the position of the strip can be kept fixed during the stamping process, so as to reduce the occurrence of processing errors and improve the processing accuracy. When the upper mold base 1 and the lower mold base 2 are separating, during the upward movement of the upper mold base 1, since the upper end of the sliding column 15 is provided with a limit ring 17, after the upper mold base 1 hits the limit ring 17, the pressure plate 14 will be lifted up and separated from the material strip and the lower mold core 3, thereby ensuring the advancement of the material strip, and allowing the height of the pressure plate 14 to be lower than the punching punch 4, bending punch 5, punching punch 6 and punching column 11.

[0029] Based on the above embodiments, it is further proposed that mounting posts 18 are provided at the upper end of the upper mold base 1 and the lower end of the lower mold base 2.

[0030] Specifically, the mounting post 18 on the upper mold base 1 is used to connect with the hydraulic drive system (not shown in the figure), and the mounting post 18 has a certain height so that the upper end of the upper mold base 1 has a space for movement, so as to accommodate the space of the sliding post 15 when the upper mold base 1 moves relative to the sliding post 15.

[0031] Based on the above embodiments, it is further proposed that guide sleeves 19 are provided at the four corners of the lower end of the upper mold base 1, and guide rods 20 corresponding to the guide sleeves 19 are provided at the four corners of the lower mold base 2. The guide rods 20 and guide sleeves 19 guide each other to see the movement trajectory of the upper mold base 1 when it is pressed down, thereby improving the guiding performance and further improving the machining accuracy.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A progressive die for processing irregularly shaped belt bending structures, characterized in that, The upper die base (1) and the lower die base (2) are included. The upper die base (1) and the lower die base (2) cooperate with each other and can move relative to each other. The lower die base (2) is provided with a lower die core (3). The lower die core (3) and the upper die base (1) are provided with a punching station, a bending station and a punching station in sequence. The lower end of the upper die base (1) is provided with a punching punch (4), a bending punch (5) and a punching punch (6) in sequence. The lower die core (3) is provided with a break hole (7) corresponding to the punching punch (4), an arc-shaped hole (8) corresponding to the punching punch (6) and a relief groove (9) corresponding to the bending punch (5). In this process, the workpiece is punched by the punching punch (4) at the punching station, so that the workpiece has a fracture on both sides. The two ends of the fracture are the bending forming part and the semi-circular end forming part, respectively.

2. The continuous die for processing irregularly shaped belt bending structures according to claim 1, characterized in that, The lower die core (3) is also provided with a groove (10) that communicates with the arc-shaped material hole (8) and the relief groove (9) for the bending part to be pushed forward.

3. The continuous die for processing irregularly shaped belt bending structures according to claim 2, characterized in that, The lower end of the upper mold base (1) is also provided with a punching post (11), and the lower mold core (3) is provided with a round hole (12) for the punching post (11).

4. The continuous die for processing irregularly shaped belt bending structures according to claim 3, characterized in that, The upper ends of the punching punch (4), bending punch (5), cutting punch (6) and punching post (11) are all provided with mounting blocks (13), and the mounting blocks (13) are installed on the upper die base (1).

5. The continuous die for processing irregularly shaped belt bending structures according to claim 4, characterized in that, A pressure plate (14) is provided between the upper mold base (1) and the lower mold core (3). A sliding column (15) is provided at each of the four corners of the pressure plate (14). A sliding sleeve (16) corresponding to the sliding column (15) is provided on the upper mold base (1). A limit ring (17) is provided after the top of the sliding column (15) passes through the drawing (16).

6. The continuous die for processing irregularly shaped belt bending structures according to claim 5, characterized in that, Mounting posts (18) are provided at the upper end of the upper mold base (1) and the lower end of the lower mold base (2).

7. The continuous die for processing irregularly shaped belt bending structures according to claim 6, characterized in that, The upper mold base (1) is provided with guide sleeves (19) at the four corners of its lower end, and the lower mold base (2) is provided with guide rods (20) at the four corners of its lower end, which correspond to the guide sleeves (19). The guide rods (20) and guide sleeves (19) are guided and cooperated.

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