Bending mold for metal thin plate

Abstract

The invention discloses a bending mold for a metal thin plate. The bending mold comprises a lower die and an upper die, wherein the lower die is of a rectangular columnar structure; at least one plane of the lower die is provided with a bending square groove along the length direction; the bending square groove is an open groove which is defined by a bottom surface and two side faces; the two side faces are vertically arranged and are in arc transition with the upper surface of the lower die; a buffer groove is downwardly formed in the bottom surface along the two side faces respectively; the bottom surface between the two buffer grooves forms a carrying surface; the carrying surface is an arc-shaped surface which arches upwards; the upper die is of a long flat plate-like structure; the lower end of the upper die is provided with a bending mold head; the lower end face of the bending mold head is a punch face; the punch face is an arc-shaped face which sinks upwards; the arc shape of the punch face is matched with the arc shape of the carrying surface. According to the bending mold, two bending processes of the metal thin plate are finished in one operation process, the verticality of a folded edge is high and the flatness of the folded edge is high.

Description

technical field [0001] The invention relates to the technical field of thin plate bending, in particular to a metal thin plate bending die, which can complete two bending processes of the metal thin plate in one operation. Background technique [0002] Such as figure 1 as shown, figure 1 It is a schematic diagram of the structure of the home decoration board in the prior art. The home decoration board includes a wood board A and a metal shell B. The metal shell B can be made of a stainless steel sheet. A stainless steel sheet is bent on the straight line where B1, B2, B3, and B4 are located. Multiple folded edges, the angle between any two adjacent folded edges is 90 degrees, and then the wooden board A is placed in the metal shell B and fixedly connected by glue. Home decoration boards can be used for the processing and production of home decoration products such as cabinets and wardrobes, and their application range is very wide. [0003] In the prior art, a planer is g...

AI Technical Summary

Problems solved by technology

In the bending process of the stainless steel sheet, on the one hand, a straight groove is planed on the surface of the stainless steel sheet, the thickness of the straight groove is reduced, and then it is folded at 90 degrees, so the connection strength of two adjacent folded edges is greatly reduced and it is easy to damage , on the other hand, folding is performed after grooving. During the folding process, the outer sides of two adjacent folded edges are folded and deformed. It is difficult for the two sides to form a 90-degree angle. Moreover, the two folded edges close to the crease Due to elastic deformation, it will bulge outward, resulting in uneven folding

[0004] Based on the deficiencies of the above-mentioned bending methods, vertical bending is carried out by stamping in the prior art. For example, a V-shaped die with an included angle of 90 degrees is used for stamping and bending. During the stamping process, the bending of B3 and B4 can be It is relatively easy to realize, but for the bending of B1 and B2, due to the interference phenomenon between the stainless steel sheets on both sides and the mold, the stamping and bending operation cannot be performed

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