Method for Improving the Fuzziness of Rigid-Flex Board on Knife Face

Abstract

The invention discloses a method for improving the wool on the knife face of a rigid-flex board, which comprises the following steps: covering the knife face of at least part of the recessed area in the rigid-flex board with a film-coated aluminum sheet; The pressure towards the blade surface of the rigid-flex board, so that the coated aluminum sheet and the side wall of the concave area on the blade-facing surface of the rigid-flex board are completely attached; The recessed area is drilled to obtain a forming hole in the recessed area of ​​the rigid-flex board; after the drilling of the rigid-flex board is completed, the coated aluminum sheet is removed. In the present invention, the gap between the film-coated aluminum sheet and the rigid-flex board is completely bonded to the side wall of the recessed area of ​​the rigid-flex board, thereby preventing hairs from accumulating between the rigid-flex board and the film. The situation between the aluminum sheets, and the hairs are taken out of the rigid-flex board and the coated aluminum sheet after drilling, thereby improving the quality of the rigid-flex board after drilling.

Description

technical field [0001] The invention relates to the field of sheet material processing, in particular to a method for improving the roughness on the knife face of a soft-hard combination sheet. Background technique [0002] Rigid-flex boards are combined by flexible circuit boards and rigid circuit boards through pressing and other processes. There is a concave area formed by the height difference on the rigid-flex board. In actual use, it is necessary to drill holes in the rigid-flex board in the concave area, but turning the needle during the drilling process may cause the soft-hard joint in the concave area. The board produces fuzz during the knife return process. In the prior art, it is necessary to use a cover plate to cover the knife-facing surface of the rigid-flex board. Due to the toughness of the cover plate, it can act as a buffer to prevent the soft-hard combination plate from being crushed. However, the existing cover plates are generally epoxy resin cold pun...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, those skilled in the art can easily think of the following solution: the inventor thought of reducing the thickness of the cover plate, so a 0.2mm thick cold punched thin cover plate was used, but it still could not overcome the problem of the brittle material, which resulted in the incompatibility with The inventor used ordinary aluminum sheets for the bonding of soft and hard boards. However, due to the relatively smooth aluminum material, the rotating needles slipped, resulting in low centrality of the rotating needles and poor quality of the forming holes. Therefore, the above technical solutions are not feasible.

[0004] In order to overcome the defects in the prior art, the embodiment of the present invention provides a method for improving the wool on the knife face of the rigid-flex board, which is used to solve the above-mentioned problem of poor quality of the formed hole

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