One-time molding curling die

Abstract

The invention discloses a one-time molding curling die. The one-time molding curling die comprises an upper die assembly, a lower die assembly and a curling assembly; the upper die assembly comprises an upper die holder and an upper die molding knife block, the lower die assembly comprises a lower die holder and a lower die molding knife block, the curling assembly comprises supporting parts and a curling male die, an upper die molding surface and a lower die molding surface are oppositely arranged, the curling male die is horizontally arranged between the upper die molding surface and the lower die molding surface, and the upper die molding surface, a molding portion and the curling male die have the same sectional radius. According to the one-time molding curling die, the inner diameter and outer diameter size and the surface quality of a stamping part in the curling technology process are guaranteed through the upper die molding surface of the upper die molding knife block, a guiding portion and the molding portion of the lower die molding knife block and the curling male die arranged in the one-time molding curling die jointly; one-time curling of the die is achieved, and then the problems that in the prior art, positioning is conducted multiple time among procedures, and assembling is influenced due to the fact that the product size is unstable are solved; meanwhile, the production cost of the stamping part is reduced.

Description

technical field [0001] The invention relates to a rolling die, in particular to a one-time forming rolling die. Background technique [0002] In the process of automobile manufacturing, due to the limitation of function and shape, some places must use round or ring parts. Ring parts are usually formed by sheet metal through the rolling process, while the conventional sheet metal rolling process needs to go through four processes of blanking, pre-bending, rolling and shaping to complete. Due to the many procedures of the conventional plate rolling process, more equipment, personnel and man-hours are required, and the production cost is relatively high; and the accumulation of positioning errors between multiple processes will lead to unstable dimensions of the final product and a high product rejection rate; poor assembly There is no guarantee, and it directly affects the assembly quality of the vehicle. Contents of the invention [0003] The purpose of the present invent...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a one-time forming roll mold to solve the shortcomings in the prior art. It can realize one-time roll forming, thereby solving the problem of multiple positioning between processes in the prior art, and the unstable product size affects assembly. problem, and the production cost is lower and the efficiency is higher

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