Three-dimensional side cutting method and die for stereoscopic high stretch formed film

Abstract

The invention discloses a three-dimensional side cutting method and a die for a stereoscopic high stretch formed film. The method is realized by the steps of: S1: conducting hot-pressing stretching on a sheet in a hot-pressing forming mould to form a semi-finished sheet with an arc; S2: placing the semi-finished sheet in a circular cutting mould to conduct circular cutting on the rim material, thus forming a shaped sheet; S3: carrying out side accurate cutting on the rim material of the shaped sheet in a side cutting mould to obtain a cut formed sheet. The die includes: the hot-pressing forming mould, which performs hot-pressing stretching on the sheet with a printed pattern and a punched positioning hole so as to form the semi-finished sheet with an arc; the circular cutting mould, which cuts the redundant rims materials around the semi-finished sheet; and the side cutting mould, which is controlled by a side cutting equipment control system and conducts side cutting on the remaining sheet of the shaped sheet. The three-dimensional side cutting method and the die provided in the invention can broaden the film thickness selection region during cutting and reduce the defective rate of products.

Description

technical field [0001] The invention relates to a film cutting method and a mold, more specifically, to a three-dimensional side cutting method and a mold for a three-dimensional high stretch forming film. Background technique [0002] The three-dimensional side-cutting method of the three-dimensional high-stretch forming film is mainly used in the field of digital electronic products that pursue a three-dimensional appearance decoration effect, and can be applied to the casing of digital electronic products that use in-mold decoration technology. [0003] At present, the traditional method of producing the above shell is the film cutting method, which mainly adopts the vertical punching method, but limited by the film cutting method itself, this method can only be applied to cutting three-dimensional low-stretch films, and It is impossible to cut flat two-dimensional films with a film thickness of no more than 0.2mm, which can no longer meet the needs of the booming digital...

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is that the above-mentioned traditional film cutting method in the prior art can only be applied to cutting three-dimensional low-stretch films, and cannot cut flat two-dimensional films with a film thickness of no more than 0.2 mm. Defects of film, providing a three-dimensional side cutting method for three-dimensional high-stretch forming film

[0005] The second technical problem to be solved by the present invention is that the above-mentioned traditional film cutting method in the prior art can only be applied to cutting three-dimensional low-stretch films, and cannot cut flat two-dimensional films with a film thickness of no more than 0.2 mm. Defects of the film, providing a three-dimensional side-cut mold for high-stretch film forming

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