A die applied to stamping process of automobile sheet metal part

Abstract

The application relates to a die applied to a stamping process of an automobile sheet metal part, which comprises an upper die plate and a lower die plate, further comprises forming assemblies respectively installed on the upper die plate and the lower die plate and capable of stamping forming two kinds of sheet metal parts with different diameters, the forming assemblies comprise a first die set capable of one-time stamping forming a small-diameter sheet metal part, and further comprise a second die set capable of bending and stamping forming a large-diameter sheet metal part. The first die set and the second die set can be matched to realize stamping forming of sheet metal parts with different diameters, reduce equipment use, improve production efficiency, and meanwhile, the first limiting column, the second limiting column, the first limiting block and the second limiting block are matched to limit the sheet metal part, so that the machining precision is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile sheet metal parts, in particular to a die applied to automobile sheet metal part stamping process. BACKGROUND

[0002] The Chinese automobile market changes rapidly, and automobile enterprises need to continuously develop new products, resulting in a sharp increase in demand for molds. At the same time, the existing vehicle models are designed in a platform manner, and a large number of parts have the same structure but different sizes. Traditional automobile sheet metal part stamping adopts one mold and one sequence, resulting in long mold processing cycle, large mold space occupation, high mold processing cost, and long stamping preparation time, which leads to low production efficiency. SUMMARY

[0003] In order to solve the above technical problems, the present application provides a die applied to automobile sheet metal part stamping process. The technical problems to be solved by the present application are realized by the following technical solutions:

[0004] A die applied to automobile sheet metal part stamping process, comprising an upper die plate and a lower die plate, further comprising a forming assembly capable of adapting to the stamping forming of sheet metal parts of two diameters and installed on the upper die plate and the lower die plate respectively, the forming assembly comprising a No. 1 die set capable of stamping and forming small-diameter sheet metal parts in one step, and a No. 2 die set for bending and stamping forming large-diameter sheet metal parts.

[0005] The lower die plate is provided with a height limiting column for limiting the stroke of the upper die plate, and the upper die plate is provided with an outer guide column for guiding during stamping.

[0006] Further, the No. 1 die set comprises a No. 1 upper die and a No. 1 lower die installed on the upper die plate and the lower die plate respectively, the No. 1 lower die comprises a forming part in the form of an arc-shaped protrusion for forming sheet metal parts, and further comprises a No. 1 flanging part distributed on both sides of the forming part along the horizontal direction and at a certain angle with the forming part for flanging the sheet metal parts.

[0007] Further, the lower die plate is further provided with a No. 1 limit stop for limiting the position of both ends of the sheet metal part.

[0008] Further, the No. 1 forming part is provided with a No. 1 limit column for preventing the sheet metal part from shaking.

[0009] Further, the No. 2 die set comprises a pre-press die set for stamping forming both sides of the large-diameter sheet metal part, and further comprises a shaping die for stamping forming the middle part of the large-diameter sheet metal part.

[0010] Furthermore, the pre-pressing mold assembly includes a second upper mold and a second lower mold respectively installed on the upper template and the lower template. The second lower mold includes a horizontal part for supporting the middle part of the sheet metal part, and also includes arc-shaped parts distributed on both sides of the horizontal part to stamp the two ends of the sheet metal part. Each arc-shaped part is connected to a second flanging part that is distributed at a fixed angle with the arc-shaped part to flanging the sheet metal part.

[0011] Furthermore, the horizontal section is provided with a second limiting post to prevent the sheet metal parts from swaying.

[0012] Furthermore, the forming mold includes a No. 3 upper mold and a No. 3 lower mold respectively installed on the upper template and the lower template. The No. 3 lower mold has an arc-shaped protrusion in the middle to stamp the middle of the sheet metal part. Both ends of the No. 3 lower mold are connected to limiting brackets to limit the ends of the sheet metal part.

[0013] Furthermore, the lower template is provided with a second limiting block that cooperates with the pre-pressing mold group and the forming mold respectively to prevent the sheet metal parts from shaking.

[0014] The beneficial effects of this invention are:

[0015] This invention enables the stamping and forming of sheet metal parts of different diameters through the cooperation of mold group one and mold group two, reducing equipment usage and improving production efficiency. At the same time, the sheet metal parts are limited by the cooperation of limit post one, limit post two, limit stop one and limit stop two, ensuring the accuracy of processing. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the left-side structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the first lower mold of the present invention;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the second lower mold of the present invention;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the third lower mold of the present invention.

[0023] The diagram shows: 1. Upper template; 2. Lower template; 3. Molding component; 4. Mold group 1; 5. Mold group 2; 6. Height limiting post; 7. Outer guide post; 41. Upper mold 1; 42. Lower mold 1; 421. Molding part; 422. Flanged part 1; 423. Limiting block 1; 424. Limiting post 1; 51. Pre-pressing mold group; 52. Shaping mold; 53. Limiting block 2; 511. Upper mold 2; 512. Lower mold 2; 513. Horizontal part; 514. Arc-shaped part; 515. Flanged part 2; 516. Limiting post 2; 521. Upper mold 3; 522. Lower mold 3; 523. Limiting bracket. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described more clearly and completely below with reference to the accompanying drawings in the embodiments. Of course, the described embodiments are only a part of the present invention and not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of the present invention.

[0025] like Figures 1 to 6 As shown, a mold used in the stamping process of automotive sheet metal parts includes an upper template 1 and a lower template 2, and also includes a forming component 3 installed on the upper template 1 and the lower template 2 respectively, which can be adapted to stamping two diameter sheet metal parts. The forming component 3 includes a first mold group 4 that can stamp small diameter sheet metal parts in one step, and a second mold group 5 that can bend and stamp large diameter sheet metal parts.

[0026] The lower template 2 is provided with a height limiting column 6 to limit the stroke of the upper template 1, and the upper template 1 is provided with an outer guide column 7 to guide the stamping process; the height limiting column 6 limits the stroke of the upper template 1 to prevent the stamping stroke from exceeding the calculated value, resulting in mold damage or sheet metal parts being unqualified; the outer guide column 7 provides stroke guidance for the upper template 1.

[0027] The first mold group 4 includes a first upper mold 41 and a first lower mold 42 respectively installed on the upper template 1 and the lower template 2. The first lower mold 42 includes a forming part 421 with an arc-shaped protrusion to form the sheet metal part, and a first flanging part 422 distributed on both sides of the forming part 421 along the horizontal direction and distributed at a fixed angle with the forming part 421 to flang the sheet metal part. The structure of the first upper mold 41 is conformally matched with the first lower mold 42. The sheet metal part is stamped and formed in one step by the forming part 421, and the two ends of the sheet metal part are flanged by the first flanging part 422, which makes it easy for the sheet metal part to be installed on the automobile.

[0028] The lower die plate 2 is further provided with a first limiting block 423 for limiting the position of the two ends of the sheet metal part; the first limiting block 423 limits the position of the two ends of the sheet metal part, so that only the raw material meeting the design requirements can be formed by stamping, and the scrap parts are prevented.

[0029] The first forming part 421 is provided with a first limiting column 424 for preventing the sheet metal part from shaking; the first limiting column 424 is provided with two groups and is clamped with the sheet metal part, so that the sheet metal part is prevented from shaking during stamping, and the scrap parts are caused by inaccurate stamping position.

[0030] The second die set 5 includes a pre-stamping die set 51 for stamping the two sides of the large-diameter sheet metal part, and a shaping die 52 for stamping the middle part of the large-diameter sheet metal part; the two sides of the sheet metal part are first stamped by the pre-stamping die set 51, and then the middle part of the sheet metal part is stamped by the shaping die 52, so that the deformation of the sheet metal part caused by the release of metal stress after one-time stamping of the large-diameter sheet metal part is prevented, and the scrap parts are caused, and the design of stamping the two ends can reduce the volume of the die and reduce the cost of the die.

[0031] The pre-stamping die set 51 includes a second upper die 511 and a second lower die 512 respectively installed on the upper die plate 1 and the lower die plate 2; the second lower die 512 includes a horizontal part 513 for supporting the middle part of the sheet metal part, and further includes arc-shaped parts 514 distributed on both sides of the horizontal part 513 for stamping the two ends of the sheet metal part; the arc-shaped parts 514 are connected with second flanging parts 515 distributed at a certain angle with the arc-shaped parts 514 for flanging the sheet metal part; the horizontal part 513 is used for supporting the middle part of the sheet metal part and is matched with the second limiting column 516 and the second limiting block 53 to limit the sheet metal part; the arc-shaped parts 514 stamp the two ends of the sheet metal part, and then the middle part of the sheet metal part is stamped by the shaping die 52, so that the product stress is fully released by twice stamping, and the deformation after stamping is prevented; the second upper die 511 and the second lower die 512 are conformally designed to ensure the stamping effect.

[0032] The horizontal part 513 is provided with a second limiting column 516 for preventing the sheet metal part from shaking; the second limiting column 516 is provided with two groups and is clamped with the sheet metal part to prevent the sheet metal part from shaking along the vertical direction.

[0033] The shaping die 52 comprises a No. 3 upper die 521 and a No. 3 lower die 522 respectively installed on the upper die plate 1 and the lower die plate 2, the middle part of the No. 3 lower die 522 is in an arc-shaped convex form to stamp the middle part of the sheet metal part, and the two ends of the No. 3 lower die 522 are connected with limiting supports 523 for limiting the two ends of the sheet metal part; since the two sides of the sheet metal part have been stamped, only the middle part of the sheet metal part needs to be stamped, the No. 3 lower die 522 cannot limit the two ends of the sheet metal part, therefore, the limiting supports 523 are designed in an L shape to prevent the sheet metal part from shaking along the vertical direction during stamping; the No. 3 upper die 521 and the No. 3 lower die 522 are conformally designed to ensure the stamping effect.

[0034] The lower die plate 2 is provided with No. 2 limiting blocks 53 for preventing the sheet metal part from shaking in cooperation with the pre-stamping die set 51 and the shaping die 52; the No. 2 limiting blocks 53 are provided with two groups distributed in cooperation with the pre-stamping die set 51 and the shaping die 52 to limit the two ends of the sheet metal part, prevent the stamping from being wrong and produce scrap parts.

[0035] In the present application, when the sheet metal part needs to be stamped, according to the length of the corresponding sheet metal part, the sheet metal part is placed into the No. 1 die set 4 or the pre-stamping die set 51; if placed into the No. 1 die set 4, the sheet metal part is recovered after stamping; if placed into the pre-stamping die set 51, the sheet metal part is placed into the shaping die 52 by artificial after the two ends of the sheet metal part are pre-stamped, so that the sheet metal part is secondarily stamped, and then recovered.

[0036] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, the above embodiments and descriptions in the specification are only the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A mold used in the stamping process of automotive sheet metal parts, characterized in that: It includes an upper template (1) and a lower template (2), and also includes a forming component (3) installed on the upper template (1) and the lower template (2) respectively, which can be adapted to stamping two diameter sheet metal parts. The forming component (3) includes a first mold group (4) that can stamp small diameter sheet metal parts in one step, and a second mold group (5) that can bend and stamp large diameter sheet metal parts. The lower template (2) is provided with a height limiting column (6) to limit the stroke of the upper template (1), and the upper template (1) is provided with an outer guide column (7) to guide the stamping process. The second mold group (5) includes a pre-pressing mold group (51) for stamping the two sides of a large-diameter sheet metal part, and a forming mold (52) for stamping the middle part of a large-diameter sheet metal part. The pre-pressing mold assembly (51) includes a second upper mold (511) and a second lower mold (512) respectively installed on the upper template (1) and the lower template (2). The second lower mold (512) includes a horizontal part (513) for supporting the middle part of the sheet metal part, and an arc-shaped part (514) distributed on both sides of the horizontal part (513) for stamping the two ends of the sheet metal part. The arc-shaped part (514) is connected to a second flange part (515) that is distributed at a fixed angle with the arc-shaped part (514) for flangeing the sheet metal part. The forming mold (52) includes a No. 3 upper mold (521) and a No. 3 lower mold (522) respectively installed on the upper template (1) and the lower template (2). The No. 3 lower mold (522) has an arc-shaped protrusion in the middle to stamp the middle of the sheet metal part. Both ends of the No. 3 lower mold (522) are connected to a limiting bracket (523) to limit the ends of the sheet metal part.

2. The die for use in the stamping process of an automobile sheet metal part according to claim 1, characterized in that: The first mold group (4) includes a first upper mold (41) and a first lower mold (42) respectively installed on the upper template (1) and the lower template (2). The first lower mold (42) includes a forming part (421) with an arc-shaped protrusion to form a sheet metal part, and a first flanging part (422) distributed on both sides of the forming part (421) along the horizontal direction and distributed at a fixed angle with the forming part (421) to flang the sheet metal part.

3. The die for use in the stamping process of an automobile sheet metal part according to claim 2, characterized in that: The lower template (2) is also provided with a first limiting block (423) to restrict the position of both ends of the sheet metal part.

4. The die for use in the stamping process of an automobile sheet metal part according to claim 2, characterized in that: The No. 1 molding section (421) is provided with a No. 1 limiting post (424) to prevent the sheet metal parts from shaking.

5. The die for use in the stamping process of an automobile sheet metal part according to claim 1, characterized in that: The horizontal part (513) is provided with a second limiting post (516) to prevent the sheet metal parts from shaking.

6. The die for use in the stamping process of an automobile sheet metal part according to claim 1, characterized in that: The lower template (2) is provided with a second limiting block (53) that cooperates with the pre-pressing mold group (51) and the shaping mold (52) respectively to prevent the sheet metal parts from shaking.

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