V-shaped bending die with roller pins

Abstract

The utility model discloses a V-shaped bending die with roller pins, which comprises a lower die holder and an upper die holder, a lower die plate is mounted at the top end of the lower die holder, and a lower bending insert is mounted at the top of the lower die plate; an upper base plate is installed at the bottom end of the lower die base, and an upper fixing plate and a punch are installed at the bottom end of the upper base plate. The lower bending insert comprises an insert body, a V-shaped groove is formed in the top of the insert body, horizontal structures are arranged on the portions, located on the two sides of the V-shaped groove, of the insert body, and roller pins are installed on the portions, located at the connecting positions of the V-shaped groove and the horizontal structures, of the insert body. According to the mold insert, horizontal structures are arranged on the two sides of the V-shaped groove of the mold insert main body, and roller pins are mounted at the joints of the V-shaped groove and the horizontal structures of the mold insert main body; the roller pin is tangent to the horizontal structure and is tangent to the inclined surface at the V-shaped groove; the appearance bending trace of the product is changed through rolling of the roller pin, and scrapping is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal bending dies, and specifically relates to a V-shaped bending die with needle rollers. Background Art

[0002] Sheet metal is a comprehensive cold working process for metal sheets, including shearing, punching, cutting, compounding, folding, welding, riveting, splicing, forming, etc. Its remarkable feature is that the thickness of the same part is consistent, and sheet metal parts are products processed by sheet metal technology.

[0003] For the existing sheet metal bending dies, such as the sheet metal bending die and bending machine disclosed in the publication number CN212329327U, the bending and forming block includes a bending and forming groove. A pressure block is provided at the inlet end of the bending and forming groove of the bending and forming block to tightly fix the sheet metal part. Before the bending action, the workpiece is placed at the inlet end of the bending and forming groove, and both ends of the workpiece are fixed by the pressure block.

[0004] However, the bending and forming groove in the existing technology is of a V-shaped structure, and the top of the bending and forming groove is likely to damage the sheet metal. For this reason, we propose a V-shaped bending die with needle rollers. Content of the Utility Model

[0005] The purpose of the utility model is to provide a V-shaped bending die with needle rollers to solve the problem that the top of the bending and forming groove in the existing technology is of a V-shaped structure and is likely to damage the sheet metal.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A V-shaped bending die with needle rollers, including a lower die base and an upper die base. A lower template is installed at the top of the lower die base, and a lower bending insert is installed on the top of the lower template; An upper backing plate is installed at the bottom of the lower die base, and an upper fixing plate and a punch are installed at the bottom of the upper backing plate.

[0007] The lower bending insert includes an insert body. A V-shaped groove is opened at the top of the insert body. Horizontal structures are arranged on both sides of the insert body where the V-shaped groove is located. Needle rollers are installed at the joints of the insert body where the V-shaped groove and the horizontal structures are located.

[0008] Preferably, the needle rollers are tangent to the horizontal structures, and the needle rollers are tangent to the inclined surfaces at the V-shaped grooves.

[0009] Preferably, a limiting groove is opened at the bottom of the insert body, and the lower template is provided with a limiting protrusion that cooperates with the limiting groove.

[0010] Preferably, an outer guide post assembly is installed between the lower die base and the upper die base, and the outer guide post assembly is composed of a guide post and a guide sleeve.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: Horizontal structures are provided on both sides of the V-shaped groove of the insert body, and needle rollers are installed at the connection between the V-shaped groove and the horizontal structure of the insert body; the needle rollers are tangent to the horizontal structure and tangent to the inclined surface at the V-shaped groove; the rolling of the needle rollers changes the bending marks on the appearance of the product, reducing waste. Description of the Drawings

[0012] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0013] Figure 1 is a schematic structural diagram before stamping of the present utility model;

[0014] Figure 2 is a schematic structural diagram during stamping of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the present utility model with the outer guide post assembly removed;

[0016] Figure 4 is a schematic structural diagram of the needle roller and the lower bending insert of the present utility model;

[0017] Figure 5 is the present utility model Figure 4 front view.

[0018] In the figures: 1, lower die base; 2, lower template; 3, outer guide post assembly; 4, upper fixing plate; 5, upper backing plate; 6, upper die base; 7, punch; 8, needle roller; 9, lower bending insert; 91, insert body; 92, horizontal structure; 93, V-shaped groove; 94, limiting groove. Detailed Embodiments

[0019] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents the selected embodiments of the present utility model.

[0020] Please refer to Figures 1-5, in the embodiment of the present utility model, a V-shaped bending die with needle rollers includes a lower die base 1 and an upper die base 6. A lower template 2 is installed at the top end of the lower die base 1, and a lower bending insert 9 is installed at the top of the lower template 2; an upper backing plate 5 is installed at the bottom end of the lower die base 1, and an upper fixing plate 4 and a punch 7 are installed at the bottom end of the upper backing plate 5; an outer guide post assembly 3 is installed between the lower die base 1 and the upper die base 6. The outer guide post assembly 3 is composed of a guide post and a guide sleeve, which plays a guiding role and improves the stability of the upper and lower dies;

[0021] The lower bending insert 9 includes an insert body 91. A V-shaped groove 93 is formed at the top of the insert body 91. Horizontal structures 92 are arranged on both sides of the insert body 91 where the V-shaped groove 93 is located. Needle rollers 8 are installed at the joints of the insert body 91 where the V-shaped groove 93 and the horizontal structures 92 are located; the needle rollers 8 are tangent to the horizontal structures 92, and the needle rollers 8 are tangent to the inclined surfaces at the V-shaped groove 93. The bending marks on the appearance of the product are changed by the rolling of the needle rollers, reducing waste; a limiting groove 94 is formed at the bottom of the insert body 91, and the lower template 2 is provided with a limiting protrusion that cooperates with the limiting groove 94.

[0022] The working principle of the present utility model is as follows: Horizontal structures 92 are arranged on both sides of the insert body 91 where the V-shaped groove 93 is located, and needle rollers 8 are installed at the joints of the insert body 91 where the V-shaped groove 93 and the horizontal structures 92 are located; the needle rollers 8 are tangent to the horizontal structures 92, and the needle rollers 8 are tangent to the inclined surfaces at the V-shaped groove 93; the bending marks on the appearance of the product are changed by the rolling of the needle rollers, reducing waste.

[0023] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A V-shaped bending die with a needle roller, comprising a lower die seat (1) and an upper die seat (6), characterized in that: A lower mold plate (2) is installed at the top of the lower mold base (1), and a lower bending insert (9) is installed at the top of the lower mold base (2); an upper pad (5) is installed at the bottom of the lower mold base (1), and an upper fixing plate (4) and a punch (7) are installed at the bottom of the upper pad (5); The lower bending insert (9) comprises an insert body (91), a V-shaped groove (93) is provided on the top of the insert body (91), horizontal structures (92) are provided on both sides of the V-shaped groove (93) of the insert body (91), and a roller needle (8) is installed at the connection between the V-shaped groove (93) and the horizontal structure (92) of the insert body (91).

2. A V-shaped bending die with a roller needle according to claim 1, characterized in that: The rolling needle (8) is tangent to the horizontal structure (92), and the rolling needle (8) is tangent to the inclined surface at the V-shaped groove (93).

3. A V-shaped bending die with a needle roller according to claim 1 or 2, characterized in that: A limiting groove (94) is provided at the bottom of the insert body (91), and the lower template (2) is provided with a limiting protrusion that cooperates with the limiting groove (94).

4. A V-shaped bending die with a roller needle according to claim 1, characterized in that: An outer guide column assembly (3) is installed between the lower die base (1) and the upper die base (6), and the outer guide column assembly (3) is composed of a guide column and a guide cylinder.

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