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Improved method for drilling inspection of flexible printed circuit (FPC) board

A drilling inspection and circuit board technology, which is applied in the direction of material analysis, measuring devices, instruments, etc. by optical means, can solve the problem of delaying work progress, limited process capability, and inability to detect FPC circuit boards porous, few holes and hole plugs and other problems, to ensure the quality and production progress, and save time.

Active Publication Date: 2018-02-16
黄石西普电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides an improved method for drilling inspection of FPC circuit boards, which solves the problem that due to the limited equipment process capability during production, it is impossible to detect defects such as porous, few holes and hole plugs in FPC circuit boards. , seriously affecting the quality of the product and delaying the progress of the work

Method used

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  • Improved method for drilling inspection of flexible printed circuit (FPC) board
  • Improved method for drilling inspection of flexible printed circuit (FPC) board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Check the FPC circuit board and its control board, sort and collect the FPC circuit boards that need to be inspected by the hole inspection machine, and put them into the test box to wait for the inspection by the hole inspection machine.

[0026] 2) Spread the FPC circuit board on the acrylic board, and use the hole inspection machine for inspection.

[0027] 3) After the inspection by the hole inspection machine, the qualified products and defective products are divided, placed and marked separately.

[0028] 4) After passing the inspection of the hole inspection machine, the inspectors need to sort the FPC circuit boards of each batch number into the mother batch, confirm the material number, batch number and quantity, and pack them for shipment after electronic weighing.

Embodiment 2

[0030] 1) Take an acrylic plate as the bottom plate, and a control plate is placed on the top of the acrylic plate.

[0031] 2) Spread the FPC circuit board on the control board, and fix the FPC circuit board.

[0032] 3) Turn on the drilling machine, drill the FPC circuit board and the reference board together, use the reference board as a reference, start a small blower, blow the burrs generated by drilling, etc., and speed up the heat dissipation of the drill bit.

[0033] 4) Place the perforated FPC circuit boards and their reference boards in a one-to-one correspondence in the collection box for arrangement and numbering.

[0034] 5) Directly observe the number of punched holes on the control board to compare the FPC circuit boards.

[0035] 6) Use the hole inspection machine to conduct a secondary inspection on the taken out FPC circuit board to prevent errors caused by too light punching on the control board and unclear marks, thereby dividing qualified products and de...

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Abstract

The invention relates to the technical field of flexible printed circuit (FPC) boards, and discloses an improved method for drilling inspection of the FPC boards. According to the improved method forthe drilling inspection of the FPC boards, in a drilling process of a drilling machine, control boards are marked after the drilling machine passes through the FPC boards, a reagent is enabled to react with reactants, and the reactants are enabled to have darker colors; a non-transparent sheltering board blocks color display after mark punching; according to the number of colored holes displayed in the control boards, the corresponding FPC boards with incorrect numbers are removed; therefore, the time spent for checking one by one by using a hole inspection machine can be saved, the FPC boards, which are taken out, are subjected to secondary inspection by using the hole inspection machine (for preventing error caused by too light punching in the control boards and not clear marks), qualified and defective products are accordingly divided, and the quality and production schedule of products are further guaranteed. By adopting corresponding production of the FPC boards and the control boards, replacement and cleaning can be carried out in time, so that the accumulation of drilling adhesion matters is reduced; a small-sized air blower is started to blow burr produced by drilling and the like and accelerate the cooling of a drill bit.

Description

technical field [0001] The invention relates to the technical field of FPC circuit boards, in particular to an improved method for drilling inspection of FPC circuit boards. Background technique [0002] Flexible printed circuit board (FPC) is a highly reliable and excellent flexible printed circuit board made of polyimide or polyester film, which has high wiring density, light weight, and thickness The characteristics of thinness and good bendability, in the production process, in order to prevent excessive open and short circuit caused by low yield or reduce the problem of FPC board scrapping and refilling caused by rough process problems such as drilling, calendering and cutting, And evaluate how to select materials to achieve the best effect of flexible circuit boards used by customers. Pre-production pretreatment is particularly important. There are three aspects that need to be dealt with before pre-production pretreatment. These three aspects are completed by engineer...

Claims

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Application Information

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IPC IPC(8): G01N21/956
CPCG01N21/956G01N2021/95653
Inventor 刘清华
Owner 黄石西普电子科技有限公司