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Method for processing short slot of rigid-flex board

A soft-rigid combination board and processing method technology, which is applied in the manufacturing of multilayer circuits, electrical components, printed circuits, etc. Effect

Pending Publication Date: 2021-08-24
FOREWIN FPC SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of scooping out the shape with a milling cutter, due to the ductility of copper, the copper layer on the edge of the short slot will lift up and produce burrs, which will affect the quality of the short slot.

Method used

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  • Method for processing short slot of rigid-flex board
  • Method for processing short slot of rigid-flex board
  • Method for processing short slot of rigid-flex board

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] This embodiment provides a method for processing short slot holes in a rigid-flex board, comprising the following steps:

[0035] Attach a dry film to both sides of the rigid-flex board 1, so that the dry film on any one side covers the copper layer on the side. Refer to the attached figure 1 , the rigid-flex board 1 has at least one slotted area 101 .

[0036] Reference attached figure 2 , drilling a hole in any slot area 101 of the rigid-flex boar...

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Abstract

The invention discloses a method for processing a short slot of a rigid-flex board, which comprises the following steps: attaching dry films to the two faces of a rigid-flex board respectively, so that the dry film on any face wraps a copper layer on the face, and the rigid-flex board is provided with at least one slot area; drilling a hole in any slotted hole area of the rigid-flex board of which the two surfaces are coated with the dry films so as to form a guide hole penetrating through the rigid-flex board, so that a milling cutter enters the rigid-flex board from the guide hole; after the milling cutter enters the interior of the rigid-flex board, using the milling cutter for shaping the slotted hole area of the rigid-flex board so as to form a short slotted hole penetrating through the rigid-flex board; and after the short slotted holes in any slotted hole area of the rigid-flex board are processed, removing the dry films on the two faces of the rigid-flex board. According to the invention, the angle deviation of the short slotted hole can be avoided, meanwhile, the copper layer at the edge of the short slotted hole does not tilt and has no burrs, and the quality of the rigid-flex board is improved.

Description

technical field [0001] The invention relates to the technical field of hole processing of circuit boards, in particular to a method for processing short slot holes of a rigid-flex board. Background technique [0002] The short slot on the flex-rigid board refers to the slot whose two ends are arc-shaped, and the ratio of slot width to slot length is 1: (1.1-2). [0003] For the processing of short slot holes, currently mainly include drilling and fishing. [0004] Reference attached Figure 5 , in the prior art, the drilling process is adopted, and the quality of the formed short slots is better, but the drilling process can only drill axially and cannot cut sideways, so when making short slots, it is necessary to The drill bit is lifted from the rigid-flex board several times, and then placed in the board after changing the position. As a result, the angle of the processed short slot hole will be offset, that is to say, the actual hole position 104 and the preset hole posi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/00H05K3/46
CPCH05K3/0044H05K3/0047H05K3/4691H05K2203/0214H05K2203/0242
Inventor 皇甫铭周海松
Owner FOREWIN FPC SUZHOU
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