A molding die device for u-shaped strip material

Abstract

The invention discloses a forming die device used for U-shaped bar materials. The forming die device comprises a female die and a male die, which are distributed side by side. The working face of the male die is matched with the inner wall of a U-shaped bar material. The female die comprises two oppositely arranged female die plates. A rolling wheel and a shaping wheel arranged side by side are arranged on the inner side of each female die plate and protrude out of the inner side of the female die plate. During formation of the U-shaped bar materials, the female die moves toward the male die, the rolling wheels and the shaping wheels sequentially roll on the outer side of the U-shaped bar material. The forming die device further comprises a top press plate. During working, the top press plate presses the male die and covers the U-shaped bar material. The forming die device has the advantages that with the closed ring die cavity, and forming size and flatness of the upper and the lower surfaces are guaranteed; the rolling wheels and the shaping wheels arranged side by side are arranged on the inner side of the female die plates, so that flatness, surface quality and mechanical performance of products are improved.

Description

technical field [0001] The invention relates to a bending and forming device for a strip material, in particular to a forming die device for a U-shaped strip material. Background technique [0002] The upper mast of the forklift is a U-shaped strip material, and its bending and forming requires control of size, shape and surface smoothness. The existing molding process is simple open-loop cold pressing molding. The disadvantages are as follows: 1. Open-loop cold press forming, the size after forming cannot be guaranteed; 2. The surface quality after forming is poor, the inner surface of the bend is used for the accumulation of compressed materials, and the outer surface is damaged due to stretched materials; 3. The overall flatness Poor degree. 4. After forming, the upper and lower surfaces of the bending part are convex due to extrusion, resulting in uneven upper and lower surfaces. 5. The degree of automation is low. Contents of the invention [0003] The purpose of ...

AI Technical Summary

Problems solved by technology

The disadvantages are as follows: 1. Open-loop cold press forming, the size after forming cannot be guaranteed; 2. The surface quality after forming is poor, the inner surface of the bend is used for the accumulation of compressed materials, and the outer surface is damaged due to stretched materials; 3. The overall flatness degree difference

4. After forming, the upper and lower surfaces of the bending part are convex due to extrusion, resulting in uneven upper and lower surfaces

5. Low degree of automation

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