Forming die provided with rolling material pressing block

Abstract

The utility model discloses a forming die provided with a rolling material pressing block, which belongs to the technical field of automobile die production, and comprises a concave die (1) positioned at the upper part and a convex die (3) positioned at the lower part which are matched with each other, the left side and the right side of the concave die (1) are provided with bulges (7), and the bulges (7) correspond to an R angle of a product to be formed. A rolling material pressing block (6) is arranged on the inner side of the protrusion (7). According to the utility model, the structure is simple, the cost is low, the traditional sliding friction is changed into rolling friction, the problem of cracking of the parts is well solved because the rolling friction force is smaller and the sheet bar is easy to enter the female die, and the success rate of first-round die testing is improved to about 80%.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile mold production, in particular to a molding mold provided with a rolling type pressing block. Background Art

[0002] like Figure 1 As shown in the figure, during the molding process, the blank 4 is difficult to enter the die 1 because the R angle of the part (corresponding to the position of the protrusion 7 of the die 1) is small (R17) and the molding depth is deep (164mm). During the molding process, the blank 4 first contacts the protrusion 7 of the die 1. During the entire molding process, the blank 4 and the protrusion 7 of the die 1 slide and rub against each other, resulting in a large friction force, which makes it easy to crack.

[0003] In order to solve this problem, the current traditional solutions are as follows: Figure 1 As shown, the preforming pressing rod 2 is added, but this method is not suitable for parts with deep forming depth. Specifically, this structure can usually solve the problem of forming difficulty below 100mm. When the forming depth exceeds 100mm, for example Figure 1 When the thickness reaches 164mm, the success rate of the first round of debugging is less than 50%, resulting in low molding efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a forming die provided with a rolling type pressing block to solve the above-mentioned problem.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a forming mold provided with a rolling press block, including a concave mold located at the top and a convex mold located at the bottom which cooperate with each other, and protrusions are provided on the left and right sides of the concave mold, and the protrusions correspond to the R angle of the product to be formed, and a rolling press block is provided on the inner side of the protrusion.

[0006] As a preferred technical solution, the rolling pressing block is cylindrical, and the diameter of the rolling pressing block is φ30-φ50 mm. Such a diameter is convenient for fitting with the inner side of the protrusion.

[0007] As a preferred technical solution, the side of the punch is also provided with a baffle plate for auxiliary positioning, which is installed beside the punch to play a positioning role and ensure that the relative position of the sheet and the punch is consistent during each production.

[0008] Compared with the prior art, the utility model has the following advantages: the utility model has a simple structure and low cost, and only needs to machine a cylindrical roller with a diameter of φ30-φ50mm, which is suitable for the R angle of the product to be formed, with an R value of 5-25mm, and is installed at the position where the sheet material needs to be enlarged (the sheet material value is enlarged by 10-30mm) to enter the die, and the traditional sliding friction is improved to rolling friction. Since the rolling friction force is small, the sheet can easily enter the die, which solves the cracking problem of such parts well, and the success rate of the first round of mold trials is increased to about 80%. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of a conventional forming die provided with a press rod according to the utility model;

[0010] Figure 2 This is a schematic diagram of a forming die provided with a rolling press block according to the utility model;

[0011] Figure 3 This is a structural diagram of the molding die of the utility model.

[0012] In the figure: 1, die; 2, press rod; 3, punch; 4, sheet; 5, product; 6, rolling press block; 7, protrusion; 8, baffle plate. Implementation

[0013] The utility model will be further described below in conjunction with the accompanying drawings. Example

[0014] See also Figure 2 and Figure 3 A forming mold provided with a rolling press block, comprising a matte 1 located above and a convex mold 3 located below which cooperate with each other, protrusions 7 are provided on the left and right sides of the matte 1, the protrusions 7 correspond to the R angle of the product to be formed, and the size thereof is R17, a rolling press block 6 is provided on the inner side of the protrusion 7, the rolling press block 6 is cylindrical, and the diameter of the rolling press block is φ50mm;

[0015] When in use, the sheet 4 is placed under the die 1, and then the punch 3 is moved upward, and the rolling press block 6 is rolled on the inner side of the protrusion 7. Since the rolling friction is small, the sheet 4 can easily enter the die 1, and finally the product 5 is obtained, which solves the cracking problem of such parts well. The success rate of the first round of mold trials reached 80%.

[0016] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A forming die provided with a rolling press block, characterized in that: The mold comprises a female mold (1) located above and a male mold (3) located below which cooperate with each other, wherein protrusions (7) are arranged on the left and right sides of the female mold (1), and the protrusions (7) correspond to the R angle of the product to be formed, and a rolling pressing block (6) is arranged on the inner side of the protrusion (7).

2. The forming die provided with a rolling press block according to claim 1, characterized in that: The rolling pressing block (6) is cylindrical, and the diameter of the rolling pressing block is φ30 mm-φ50 mm.

3. The forming die provided with a rolling press block according to claim 1, characterized in that: A material blocking plate (8) for assisting positioning is also provided on the side of the male die (3).

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