Bending composite die used in heat shield production

Abstract

The utility model discloses a bending composite die used in heat shield production. The bending composite die comprises an upper die structure and a lower die structure. The die is characterized in that the upper die structure comprises an upper clamping plate, an upper die plate, a balance block, a third spring, a material pressing block and an upper bending block, and the upper bending block obliquely slides along a first oblique sliding face; the lower die structure comprises a supporting base, a limiting block, a lateral bending block, a second spring, a connecting block, a first spring, an elastic material core and a fourth spring. The lateral bending block obliquely slides along the second oblique sliding surface; the elastic material core moves up and down relative to the connecting block; product quality is improved, cost is reduced, and production efficiency is improved; and the upper bending block adopts an inclined sliding structure, so that the problem that the part cannot be taken after bending is solved.

Description

Technical Field

[0001] This utility model relates to the field of cold stamping die technology, specifically a bending composite die used in the production of heat insulation covers. Background Technology

[0002] Bending dies are one of the most technically demanding jobs in sheet metal processing. Although some products are processed using CNC equipment in modern manufacturing, the processing cost is high and the efficiency is low. With changes in market demand and technological advancements, higher requirements are constantly being placed on the design and manufacturing of bending dies.

[0003] Currently, the conventional process for molding engine heat shields is as follows: Figure 4 As shown: Blanking 22 → Bending 23 → Hemming 24 → Pressing 25, completed in four processes. Each process requires a set of molds, a hydraulic press, and an operator. Poor product quality: The deformation and twisting of the sheet metal are increased during multiple bending processes, and errors are introduced due to the transfer between processes. The accumulation of errors directly affects the quality of the delivered product. High cost: More processes mean more molds, resulting in higher mold development costs; more hydraulic presses increase equipment maintenance and wear and tear costs; more operators increase the manual processing costs of each process. Low production efficiency: When using the Blanking 22 → Bending 23 → Hemming 24 → Pressing 25 process, the product needs to be transferred between each process, resulting in a long product processing cycle.

[0004] Conventional bending dies cannot meet the market's requirements for cost, efficiency, and quality; in order to produce high-quality heat insulation covers that meet market demands, it is necessary to develop and design composite bending dies suitable for heat insulation cover production. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a bending composite mold for the production of heat insulation covers.

[0006] The technical solution provided by this utility model is as follows: a bending composite mold for heat insulation cover production, comprising an upper mold structure and a lower mold structure; the special feature is that the upper mold structure includes an upper clamping plate, on which an upper template is provided; a balance block is provided below the upper template, a third spring mounting hole is provided in the upper clamping plate, and a third spring is provided in the third spring mounting hole; a pressure block is provided below the upper clamping plate, the pressure block is clearance-fitted with an upper bending block, and the upper bending block slides obliquely along a first inclined sliding surface;

[0007] The lower mold structure includes a support base with a limiting block on it; a lateral bending block is provided inside the support base, which slides obliquely along a second inclined sliding surface; a second spring mounting hole is provided on the lateral bending block, and a second spring is installed inside the second spring mounting hole; the lateral bending block is clearance-fitted with a connecting block, and a first spring mounting hole is provided on the connecting block, and a first spring is installed inside the first spring mounting hole; the connecting block is clearance-fitted with a spring core, and a fourth spring mounting hole is provided inside the spring core, and a fourth spring is installed inside the fourth spring mounting hole; the spring core moves up and down relative to the connecting block.

[0008] Furthermore, the elastic core cooperates with the pressure block and the upper bending block to form, position and fix the heat insulation cover between the upper bending block and the side bending block under the force of the side bending block.

[0009] The beneficial effects of this utility model are:

[0010] Improving product quality by completing two processes in one mold reduces the deformation and twisting of the sheet metal during bending, reduces the number of process transitions, reduces error accumulation, and thus avoids the generation of processing errors, thereby improving the quality of product delivery.

[0011] 2. Reduced costs: Only one set of molds needs to be developed for the bending and curling processes, which reduces the design, manufacturing and development costs of the molds; it also reduces the number of hydraulic presses, thus reducing equipment maintenance and wear and tear costs; and it reduces the number of operators, thus reducing the manual processing costs of the process.

[0012] 3. Improve production efficiency: The bending and hemming processes are completed in one stamping process, reducing the number of product processing steps and shortening the product processing cycle;

[0013] 4. The upper bending block adopts an oblique sliding structure, which solves the problem of not being able to remove the part after bending. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the closed-mold structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the working process state structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the mold opening state structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the existing processing technology;

[0018] Figure 5 This is a schematic diagram of the processing technology of this utility model.

[0019] In the diagram: 1. Upper template, 2. Upper clamping plate, 3. Pressing block, 4. Upper bending block, 5. Heat insulation cover, 6. Spring core, 7. Connecting block, 8. Support base, 9. Balance block, 10. Limiting block, 11. Lateral bending block, 12. First inclined sliding surface, 13. First spring, 14. First spring mounting hole, 15. Second spring, 16. Second spring mounting hole, 17. Third spring mounting hole, 18. Third spring, 19. Second inclined sliding surface, 20. Fourth spring, 21. Fourth spring mounting hole, 22. Material dropping, 23. Bending, 24. Edge curling, 25. Pressing, 26. Bending composite. Detailed Implementation

[0020] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings.

[0021] like Figure 1 , 2 As shown in Figure 3, a bending composite mold used in the production of heat insulation covers includes an upper mold structure and a lower mold structure.

[0022] The upper mold structure includes an upper clamping plate 2. An upper template 1 is fixed to the upper clamping plate 2 with screws. A balance block 9 is fixed to the lower part of the upper template 1 with bolts. The function of the balance block 9 is to balance the mold pressure when the mold is bending downwards and to push the lateral bending block 11 to slide obliquely. A third spring mounting hole 17 is provided in the upper clamping plate 2, and a third spring 18 is installed in the third spring mounting hole 17. A pressure block 3 is fixed to the lower part of the upper clamping plate 2 with bolts. The pressure block 3 and the upper bending block 4 are clearance-fitted. The upper bending block 4 is made of Cr12Mov mold steel, which has high wear resistance. When the mold is bent, the third spring 18 pushes the upper bending block 4 to slide obliquely along the first oblique sliding surface 12 when the mold moves upwards, ensuring that the heat insulation cover 5 can be easily removed after bending.

[0023] The lower mold structure includes a support base 8, with a limit block 10 fixed above the support base 8 to limit the return position of the lateral bending block 11. The lateral bending block 11, made of SKD11 high-strength mold steel, is installed inside the support base 8. During mold operation, under the downward thrust of the balance block 9, the lateral bending block 11 slides obliquely along the second inclined sliding surface 19. The lateral bending block 11 has a second spring mounting hole 16, in which a second spring 15 is installed. The lateral bending block 11 is connected to the connecting block 7 with a clearance fit. The connecting block 7 has a first spring mounting hole 14, in which a first spring 13 is installed. When the mold returns, the first spring 13 and the second spring 15 exert force to push the lateral bending block 11 to slide obliquely along the second inclined sliding surface 19 back to the initial design position; the connecting block 7 and the spring core 6 are connected with a clearance fit, and a fourth spring mounting hole 21 is provided in the spring core 6. The fourth spring 20 is installed in the fourth spring mounting hole 21. When the mold returns, the fourth spring 20 pushes the spring core 6 to rise, and the spring core 6 moves up and down relative to the connecting block 7; the spring core 6 cooperates with the pressure block 3 and the upper bending block 4, and under the force of the lateral bending block 11, the heat insulation cover 5 is formed, positioned and fixed between the upper bending block 4 and the lateral bending block 11.

[0024] like Figure 5 As shown, the process of this utility model is as follows: blanking 22 → bending and compounding 26 → pressing 25, which are completed in three processes, and each process corresponds to a set of molds.

[0025] This utility model discloses a bending composite mold for heat insulation cover production. During operation: the upper mold descends, positioning the flat blank on the spring core 6. The upper bending block 4 slides obliquely along the first inclined sliding surface 12 under the downward pressure of the upper mold until it contacts the upper clamping plate 2. The spring core 6 descends synchronously under the pressure of the upper mold, bending the heat insulation cover 5 at a right angle until it fully contacts the connecting block 7. The upper mold continues to descend, and the balance block 9 pushes the lateral bending block 11 to slide obliquely along the second inclined sliding surface 12. The spring core 6 and the connecting block 7 descend synchronously, and the lateral bending block 11 contacts the upper mold. The bending block 4 folds out the negative angle of the heat insulation cover 5, and the heat insulation cover 5 is bent. The upper die descends to the limit position and then rises. The spring core 6, connecting block 7, and side bending block 11 rise synchronously under the action of the first spring 13, the second spring 15, and the fourth spring 20. The spring core 6, connecting block 7, and side bending block 11 stop rising when they reach the design position. The upper die continues to rise, and the upper bending block 4 slides obliquely along the first oblique sliding surface 12 under the push of the third spring 18. The upper bending block 4 separates from the heat insulation cover 5, and the upper die continues to rise to the upper limit position, completing one punching cycle.

[0026] It should be understood that any technical features not described in detail in this specification belong to the prior art. Although the embodiments of this utility model patent have been described above in conjunction with the accompanying drawings, this utility model is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make more forms under the guidance of this utility model without departing from the spirit and scope of protection of this utility model and the claims, and these all fall within the protection scope of this utility model.

Claims

1. A bending composite mold for use in the production of heat insulation covers, comprising an upper mold structure and a lower mold structure; characterized in that, The upper mold structure includes an upper clamping plate (2), on which an upper template (1) is provided; a balance block (9) is provided below the upper template (1); a third spring mounting hole (17) is provided inside the upper clamping plate (2), and a third spring (18) is provided inside the third spring mounting hole (17); a pressure block (3) is provided below the upper clamping plate (2), and the pressure block (3) is clearance-fitted with the upper bending block (4), and the upper bending block (4) slides obliquely along the first oblique sliding surface (12); The lower mold structure includes a support base (8), on which a limiting block (10) is provided; a lateral bending block (11) is provided inside the support base (8), and the lateral bending block (11) slides obliquely along a second oblique sliding surface (19); a second spring mounting hole (16) is provided on the lateral bending block (11), and a second spring (15) is provided inside the second spring mounting hole (16); the lateral bending block (11) is connected to the connecting block (7) with a clearance fit, and a first spring mounting hole (14) is provided on the connecting block (7), and a first spring (13) is provided inside the first spring mounting hole; the connecting block (7) is connected to the spring core (6) with a clearance fit, and a fourth spring mounting hole (21) is provided inside the spring core (6), and a fourth spring (20) is provided inside the fourth spring mounting hole (21); the spring core (6) moves up and down relative to the connecting block (7).

2. The bending composite mold for heat insulation cover production according to claim 1, characterized in that, The elastic core (6) cooperates with the pressure block (3) and the upper bending block (4) to form, position and fix the heat insulation cover (5) between the upper bending block (4) and the side bending block (11) under the force of the side bending block (11).

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