A one-step forming die structure for roll forming

Abstract

This utility model belongs to the field of mold technology and discloses a mold structure for one-step rolling forming. It includes an upper mold and a lower mold. The upper mold includes an upper mold base, and the lower mold includes a lower mold base. It also includes an upper mold inserter mounted on the upper mold base and a lower mold pusher mounted on the lower mold base. The upper mold inserter and the lower mold pusher are arranged vertically and vertically, with their contact surfaces at a 45° angle to each other. A rolling surface, which is semi-circular, is provided on the side of the lower mold pusher away from the angle. As the upper mold moves downwards, the upper mold inserter pushes the rolling surface of the lower mold pusher to roll the material sheet, forming it in one step. This mold structure simplifies the rolling process, achieves one-step rolling forming, prevents material deformation at the rolling point, ensures stable forming and product dimensions, and avoids obvious mold marks. It also significantly reduces mold development costs and production costs, and improves production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to a mold structure for one-step rolling. Background Technology

[0002] Currently, products with rolled ends produced by progressive dies are typically formed in steps. The first step is to make a 90-degree arc, the second step is to bend it upwards by 90 degrees, the third step is to roll it into shape, and the fourth step is to roll and shape it. Using this method to produce rolled products results in a long mold development cycle, many production steps, inconvenience in mold repair during production, and extremely low production efficiency. Furthermore, the high cost of molds due to the many steps increases the stamping production cost.

[0003] Therefore, there is an urgent need to design a mold structure for one-step rolling to simplify the rolling process and reduce production costs. Summary of the Invention

[0004] To address the problems existing in the prior art, this utility model provides a mold structure for one-step rolling, which simplifies the rolling process, reduces production costs, and improves production efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] A mold structure for one-step rolling and forming includes an upper mold and a lower mold. The upper mold includes an upper mold base, and the lower mold includes a lower mold base. It also includes an upper mold inserter mounted on the upper mold base and a lower mold pusher mounted on the lower mold base. The upper mold inserter and the lower mold pusher are arranged vertically and vertically, and their contact surfaces are at a 45° angle to each other. The side of the lower mold pusher away from the angle is provided with a rolling surface, which is semi-circular. As the upper mold moves downward with the upper mold, the upper mold inserter pushes the rolling surface of the lower mold pusher to roll the material sheet into a one-step rolling and forming process.

[0007] Furthermore, the upper die inserter and the lower die pusher are made of SKD11 material with a heat treatment hardness of HRC58-60.

[0008] Furthermore, the upper mold also includes an upper backing plate, an upper clamping plate, and a stripper plate. The upper backing plate and the upper clamping plate are assembled onto the upper mold base by upper mold screws and positioning pins. An equal-height sleeve is installed on the stripper plate, and a spring and a guide post are installed on the upper clamping plate. The equal-height sleeve fixes the upper clamping plate and the stripper plate.

[0009] Furthermore, the lower mold also includes a lower pad, a lower mold base, a lower pad block, and a lower support plate. The lower template and the lower pad are assembled onto the lower mold base by lower mold positioning pins. Guide sleeves are provided on the lower template and the lower pad. The lower mold base, the lower pad block, and the lower support plate are fixed by screws.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This utility model discloses a mold structure for one-step rolling, which simplifies the rolling process, achieves one-step rolling, prevents material deformation at the rolling point, ensures stable product dimensions, and avoids obvious mold marks. It also greatly reduces mold development costs and production costs, and improves production efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] The components are: 1. Upper mold base; 2. Upper backing plate; 3. Upper clamping plate; 4. Stripper plate; 5. Lower mold plate; 6. Lower backing plate; 7. Lower mold base; 8. Lower pad block; 9. Lower support plate; 10. Upper mold insert; 11. Lower mold push block; 12. Upper mold positioning pin; 13. Upper mold screw; 14. Guide post; 15. Equal height sleeve; 16. Spring; 17. Lower mold positioning pin; 18. Material sheet. Detailed Implementation

[0014] The specific embodiments of this utility model will be further explained below with reference to the accompanying drawings.

[0015] like Figure 1 As shown, a mold structure for one-step rolling includes an upper mold and a lower mold, which is suitable for products with a material thickness of 0.5mm to 3.0mm, made of materials with low hardness and good plasticity such as galvanized sheet, aluminum or copper, and with an inner diameter of 3mm to 10mm.

[0016] The upper mold includes an upper mold base 1, an upper pad 2, an upper clamping plate 3, a stripper plate 4, an upper mold inserter 10, an upper mold positioning pin 12, an upper mold screw 13, a guide post 14, a height-equalizing sleeve 15, and a spring 16; the lower mold includes a lower mold plate 5, a lower pad 6, a lower mold base 7, a lower pad block 8, a lower support plate 9, a lower mold push block 11, and a lower mold positioning pin 17.

[0017] Specifically, the upper pad 2 and the upper clamping plate 3 are assembled onto the upper mold base 1 by the upper mold screw 13 and the positioning pin 12. The stripper plate 4 is equipped with the equalizing sleeve 15. The upper clamping plate 3 is fitted with the spring 16 and the guide post 14. The equalizing sleeve 15 locks the upper clamping plate 3 and the stripper plate 4. The spring 16 provides elasticity to the stripper plate 4. The guide post 14 is used to guide the upper mold and the lower mold when they are closed. The insert punch 10 is directly installed on the upper mold base 1.

[0018] The lower template 5 and the lower pad 6 are assembled onto the lower mold base 7 via the lower mold positioning pin 17. Guide sleeves are provided on the lower template 5 and the lower pad 6 for cooperating with the guide post 14. The lower mold base 7, the lower pad block 8 and the lower support plate 9 are locked together by screws. The lower mold push block 11 is directly installed on the lower mold base 7, corresponding to the position of the upper mold insert 10.

[0019] The upper die inserter 10 and the lower die pusher 11 are arranged vertically and vertically, and their contact surfaces are at a 45° angle to each other. As the upper die inserter 10 moves downward with the upper die, it pushes the lower die pusher 11 to the right, i.e., the material sheet 18, through the inclined surface. The side of the lower die pusher 1 away from the inclined angle is provided with a rolled surface, i.e., the front end of the lower die pusher 1 in the forward direction is provided with a rolled surface. The rolled surface is semi-circular, and its semi-circular diameter is the same as the rolled outer diameter required by the product.

[0020] Both the upper die inserter 10 and the lower die pusher 11 are made of SKD11 material. The heat treatment hardness is preferably HRC58-60. SKD11 is a high wear-resistant and tough general-purpose cold work die steel, high carbon and high chromium alloy tool steel and vacuum degassing refined steel. The steel is pure and has good hardenability with good hardenability and small quenching deformation.

[0021] The working process of the one-step rolling mold structure described in this embodiment is as follows:

[0022] During production, the upper die is fixed to the upper table of the punch press, and the lower die is fixed to the lower table of the punch press. The sheet material 18 is placed in a suitable position on the lower template 5, with the front end of the sheet material 18 protruding from the lower template 5. The punch press moves downward, driving the upper die to move downward, and the stripper plate 4 presses down on the sheet material 18.

[0023] The upper die inserter 10 moves downward synchronously with the upper die. The lower die pusher 11 contacts the sheet material under the push of the inclined surface of the upper die inserter 10. The front end of the sheet material 18 is squeezed by the lower die pusher 11 and its rolled surface is curved upward. The front end of the sheet material 18 forms an arc. The upper die continues to move downward until it closes with the lower die. The lower die pusher 11 is continuously squeezed until it moves to the stripper plate 4. The front end of the sheet material 18 finally forms a complete rolled circle.

[0024] The upper die moves upward, causing the stripper plate 4 to spring open, thus completing the entire stamping process.

[0025] In this embodiment, the mold structure allows the material sheet at the rolling point to be free from being pressed down by the mold during rolling. The material sheet can warp freely during rolling, resulting in stable rolling and forming without material pulling or deformation. The product dimensions are stable, and no obvious mold marks are produced. This mold can complete rolling in one step without adding additional molds. It is simple to assemble, easy to operate, reduces mold development costs, improves production efficiency, and is easy to promote.

[0026] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A die structure for one-step forming of a round bend, comprising an upper die and a lower die, the upper die comprising an upper die seat (1) and the lower die comprising a lower die seat (7), characterized in that, It also includes an upper mold inserter (10) installed on the upper mold base (1) and a lower mold pusher (11) installed on the lower mold base (7). The upper mold inserter (10) and the lower mold pusher (11) are arranged vertically and vertically, and their contact surfaces are at a 45° angle to each other. The side of the lower mold pusher (11) away from the angle is provided with a rolled surface, which is semi-circular. The upper mold inserter (10) pushes the rolled surface of the lower mold pusher (11) to roll the material sheet (18) into a rolled shape in one step as the upper mold moves downward.

2. A one-step forming die structure for roll forming according to claim 1, wherein The upper die insert (10) and lower die push block (11) are made of SKD11 material with a heat treatment hardness of HRC58~60.

3. A one-step forming die for roll forming according to claim 1, wherein The upper mold also includes an upper pad (2), an upper clamping plate (3), and a stripper plate (4). The upper pad (2) and the upper clamping plate (3) are assembled onto the upper mold base (1) by upper mold screws (13) and positioning pins (12). An equal-height sleeve (15) is installed on the stripper plate (4). A spring (16) and a guide post (14) are installed on the upper clamping plate (3). The equal-height sleeve (15) fixes the upper clamping plate (3) and the stripper plate (4).

4. A one-step forming die for roll forming according to claim 1, wherein The lower mold also includes a lower template (5), a lower pad (6), a lower mold base (7), a lower pad block (8), and a lower support plate (9). The lower template (5) and the lower pad (6) are assembled onto the lower mold base (7) by lower mold positioning pins (17). Guide sleeves are provided on the lower template (5) and the lower pad (6). The lower mold base (7), the lower pad block (8), and the lower support plate (9) are fixed by screws.

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