Cover plate flanging die

Abstract

The utility model relates to the technical field of cover plate flanging processing, specifically relates to a cover plate flanging die, including upper die and lower die, the closing die face of upper die is equipped with drive block, the lower die is equipped with the same float as upper die moving direction with lower die kernel side end, the float is located drive block below, the float includes the float material block of support cover plate in the flanging process, the utility model discloses the former profiling block setting on upper die is changed to set the float of floating along the vertical direction on lower die, and the float has the float material block of setting towards lower die kernel profiling, in the closing die process, the flanging of cover plate is supported by the float material block, and drive block will drive the whole lower shift of float, to eliminate the rigid extrusion that can occur between cover plate flanging and float material block, to avoid the surface indentation of cover plate.

Description

Technical Field

[0001] This utility model relates to the field of cover plate folding processing technology, and in particular to a cover plate folding mold. Background Technology

[0002] In the manufacturing of automotive metal exterior trim parts, the folding process of the cover plate is usually completed using stamping dies. The traditional process involves floating a material block on the lower die core to lift the metal exterior trim part out of the mold after stamping. However, during the stamping process, the height difference between the material block and the top surface of the lower die core easily causes indentations on the surface of the exterior trim part after stamping. This necessitates significant time for repair to improve the appearance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cover plate folding mold to avoid surface indentations during cover plate folding.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a cover plate folding mold, including an upper mold and a lower mold; a driving block is provided on the mold closing surface of the upper mold;

[0005] The lower die core side end is provided with a float in the same direction of movement as the upper die. The float is located below the drive block and includes a floating block that supports the cover plate during the folding process.

[0006] Furthermore, the end face of the lower mold core facing the floating material block is a clearance surface, and a gap is left between the end face of the floating material block facing the lower mold core and the clearance surface.

[0007] Furthermore, the gap between the floating block and the clearance surface is A, where 0.1mm ≤ A ≤ 0.2mm.

[0008] Furthermore, the end face of the lower mold core facing the floating material block includes a clearance surface and a folded edge surface, and the folded edge surface is located at the end of the clearance surface away from the mold closing surface of the lower mold core.

[0009] Furthermore, after the cover plate is folded over the folded edge, the folded edge has a reserved area that connects with the avoidance surface, and the width of the reserved area is B, 4mm≤B≤4.5mm.

[0010] Furthermore, the included angle between the clearance surface and the closing surface of the lower mold is C, where 85°≤C≤90°.

[0011] Furthermore, the top surface of the floating block has a support area.

[0012] Furthermore, the float also includes an elastic element that penetrates the lower mold, and the float block is connected to the elastic element.

[0013] Furthermore, the float also includes a mounting block that penetrates the lower mold, the elastic element is disposed on the mounting block, the mounting block has a cavity, and the elastic element is disposed within the cavity.

[0014] Furthermore, the lower mold is provided with a limiting block, the limiting block having a limiting part, and the mounting block having a limiting step that can abut against the limiting part.

[0015] The beneficial effects of this invention are as follows: the float block originally set on the lower mold core is replaced with a float set on the side of the lower mold core. During the mold closing process, the float block supports the cover plate under the folded edge, and the drive block drives the float to move downward as a whole, ensuring that the cover plate can be smoothly folded and formed on the lower mold core, thereby avoiding indentations on the surface of the cover plate. During the demolding process, the float moves and resets, allowing the float block to lift the folded edge of the cover plate, thus demolding the cover plate from the lower mold core. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of a cover plate folding mold proposed in this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of part E of a cover plate folding mold;

[0018] Figure 3 This is a schematic diagram of the float structure of a cover plate folding mold proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of a cover plate folding mold proposed in this utility model;

[0020] Figure 5 for Figure 4 A side view of a cover plate folding mold;

[0021] Figure 6 for Figure 5 Enlarged view of part F of a cover plate folding mold;

[0022] Label Explanation:

[0023] 1. Upper mold; 11. Drive block;

[0024] 2. Lower mold; 21. Lower mold core; 211. Clearance surface; 212. Folded edge surface; 22. Float; 221. Float block; 222. Elastic component; 223. Mounting block; 23. Limiting block; 231. Limiting part;

[0025] 3. Limiting step;

[0026] 4. Cover plate. Detailed Implementation

[0027] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0028] Please refer to Figure 1 and Figure 2 As shown, the present invention provides a cover plate folding mold, including an upper mold 1 and a lower mold 2; a driving block 11 is provided on the mold closing surface of the upper mold 1; a float 22 is provided on the side end of the lower mold core 21 of the lower mold 2 in the same direction of movement as the upper mold 1, the float 22 is located below the driving block 11, and the float 22 includes a floating block 221 that supports the cover plate 4 during the folding process.

[0029] Working principle: During mold closing, the float block 221 supports the cover plate 4 below the folded edge, and the drive block 11 drives the float 22 to move downward as a whole, ensuring that the cover plate 4 can be smoothly folded and formed on the lower mold core 21, thereby avoiding indentations on the surface of the cover plate 4. During demolding, the float 22 moves back to its original position, allowing the float block 221 to lift the folded edge of the cover plate 4, thus demolding the cover plate 4 from the lower mold core 21.

[0030] In some implementations, please refer to Figure 2 As shown, the end face of the lower mold core 21 facing the float block 221 is a clearance surface 211, and a gap is left between the end of the float block 221 facing the lower mold core and the clearance surface 211. Preferably, the gap between the float block 221 and the clearance surface 211 is A, 0.1mm≤A≤0.2mm. Limiting the gap between the float block 221 and the clearance surface 211 ensures that the float block 221 does not interfere with the lower mold core 21 during the movement of the float 22.

[0031] In some implementations, please refer to Figure 2 As shown, the end face of the lower mold core 21 facing the floating material block 221 includes a clearance surface 211 and a folded edge surface 212. The folded edge surface 212 is located at the end of the clearance surface 211 that is away from the mold closing surface of the lower mold core 21. During the folding process of the cover plate 4, the folded edge formed by the cover plate 4 will abut against the folded edge surface 212.

[0032] It is worth noting that the angle between the folded edge and the clearance surface is determined by the folding angle of the cover plate 4.

[0033] In some implementations, please refer to Figure 2 As shown, the folded edge surface 212 has a reserved area for connection with the clearance surface 211, and the width of the reserved area is B, 4mm≤B≤4.5mm. That is, after the cover plate 4 is folded at the folded edge surface 212, the distance from the folded edge of the cover plate 4 to the clearance surface 211 is B, 4mm≤B≤4.5mm. Since the cover plate 4 will spring back after folding, by limiting the distance from the folded edge of the cover plate 4 to the clearance surface 211, a margin can be reserved for the lower mold core 21 for later mold modification to absorb the springback of the cover plate 4.

[0034] In some implementations, please refer to Figure 2 As shown, the included angle between the clearance surface 211 and the parting surface of the lower mold 2 is C, where 85°≤C≤90°. By limiting the included angle between the clearance surface 211 and the parting surface of the lower mold 2, the space occupied by the lower mold core 21 for other components is reduced.

[0035] In some implementations, please refer to Figure 2 As shown, the top surface of the float block 221 has a support area. The contact width between the support area and the folded edge of the cover plate 4 is D, which is 80% ≤ D ≤ 100% of the folded edge thickness of the cover plate 4. This limits the contact amount between the float block 221 and the cover plate 4 to ensure that the float block 221 can effectively support the folded edge of the cover plate 4. Taking a folded edge thickness of 1mm as an example, D is 0.8mm ≤ D ≤ 1mm.

[0036] In some implementations, please refer to Figure 1 and Figure 3 As shown, the float 22 also includes an elastic element 222 that penetrates the lower mold 2, and the float block 221 is connected to the elastic element 222. The movement of the float 22 is achieved by utilizing the elastic element 222.

[0037] It is worth noting that the elastic element 222 can be a spring, nitrogen spring, or other elastic device.

[0038] In some implementations, please refer to Figure 4 and Figure 5 As shown, the float 22 also includes a mounting block 223 that penetrates the lower mold 2. An elastic element 222 is disposed on the mounting block 223, and the mounting block 223 has a cavity in which the elastic element 222 is disposed. By setting the mounting block 223 and the elastic element 222 in the cavity of the mounting block 223, the float 22 can move on the lower mold 2.

[0039] In some implementations, please refer to Figure 6 As shown, the lower mold 2 is provided with a limiting block 23, the limiting block 23 having a limiting part 231, and the mounting block 223 having a limiting step 3 that can abut against the limiting part 231. By utilizing the cooperation between the limiting part 231 on the limiting block 23 and the limiting step 3, the float 22 is prevented from being ejected from the lower mold 2 by the elastic force of the elastic element 222.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A cover plate folding mold, characterized in that: It includes an upper mold and a lower mold; a driving block is provided on the mating surface of the upper mold; The lower die core side end is provided with a float in the same direction of movement as the upper die. The float is located below the drive block and includes a floating block that supports the cover plate during the folding process.

2. The cover plate folding mold according to claim 1, characterized in that: The end face of the lower mold core facing the floating material block is a clearance surface, and a gap is left between the end face of the floating material block facing the lower mold core and the clearance surface.

3. The cover plate folding mold according to claim 2, characterized in that: The gap between the floating block and the clearance surface is A, where 0.1mm ≤ A ≤ 0.2mm.

4. The cover plate folding mold according to claim 2, characterized in that: The end face of the lower mold core facing the floating material block includes a clearance surface and a folded edge surface, and the folded edge surface is located at the end of the clearance surface away from the mold closing surface of the lower mold core.

5. The cover plate folding mold according to claim 4, characterized in that: The folded edge has a reserved area that connects with the avoidance surface, and the width of the reserved area is B, where 4mm≤B≤4.5mm.

6. The cover plate folding mold according to claim 2, characterized in that: The included angle between the clearance surface and the mold closing surface of the lower mold is C, where 85°≤C≤90°.

7. The cover plate folding mold according to claim 1, characterized in that: The top surface of the floating block has a support area.

8. The cover plate folding mold according to claim 1, characterized in that: The float also includes an elastic element that penetrates the lower mold, and the float block is connected to the elastic element.

9. The cover plate folding mold according to claim 8, characterized in that: The float also includes a mounting block that penetrates the lower mold, the elastic element is disposed on the mounting block, the mounting block has a cavity, and the elastic element is disposed within the cavity.

10. The cover plate folding mold according to claim 9, characterized in that: The lower mold is provided with a limiting block, the limiting block has a limiting part, and the mounting block has a limiting step that can abut against the limiting part.

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