Improved FPC boring examination method

Abstract

The invention discloses an improved FPC boring examination method. The method comprises the following steps: drawing out the base plates of each stack of FPCs after pins of bored FPCs are removed; after the base plates are examined to be qualified, arranging the FPCs needing examination of a bore verifier; placing the FPCs between two acrylic plates, and placing the FPCs into the bore verifier for examination after tidy arrangement; taking out the FPCs after the examination from the two acrylic plates, placing qualified products into a qualified turnover box and placing unqualified products into a defective product box; and arranging the FPCs with qualified batch numbers into a mother batch, confirming a material number, a batch number and the quantity, and performing electronic weighing and packaging shipment. According to the invention, the two acrylic plates are used for clamping the FPCs therebetween during the examination of the bore verifier, such qualify abnormities as short return needles, too many bores, lack of bores, large bores, small bores, unpenetrated bores and the like of the FPCs can be successfully examined, adverse scrap phenomena including wrinkles and impressions of soft plates and the like can also be avoided, and the quality of the FPCs is guaranteed during the examination of the bore verifier.

Description

technical field [0001] The invention belongs to the field of PCB circuit board drilling inspection, and in particular relates to an improved method for FPC circuit board drilling inspection. Background technique [0002] In the drilling process of FPC circuit boards (flexible circuit boards), 0.1mm drill needles are often used, which often causes the needle return alarm of the machine due to the inaccurate measurement of the drill needle length of the machine, resulting in less hole phenomenon. Most of the holes on the FPC circuit board are holes with a diameter of 0.1MM, and the thickness of the board does not exceed 0.1MM. Due to the limited process capability of the equipment during production, it is impossible to detect defects such as porous, few holes, and hole plugs on the FPC circuit board. [0003] At present, the common method in the industry is to pass the visual inspection by personnel, but even this cannot be 100% complete without leakage, and this method waste...

AI Technical Summary

Problems solved by technology

[0002] In the drilling process of FPC circuit boards (flexible circuit boards), 0.1mm drill needles are often used, which often causes the needle return alarm of the machine due to the inaccurate measurement of the drill needle length of the machine, resulting in less hole phenomenon

Most of the holes on the FPC circuit board are holes with a diameter of 0.1MM, and the thickness of the board does not exceed 0.1MM. Due to the limited process capability of the equipment during production, it is impossible to detect defects such as porous, few holes, and hole plugs on the FPC circuit board.

[0003] At present, the common method in the industry is to pass the visual inspection by personnel, but even this cannot be 100% complete without leakage, and this method wastes manpower and time and affects the delivery date

There are also a few people who use the hole inspection machine. The inspection of the hole inspection machine can overcome the disadvantages of slow visual inspection, easy to miss, and long time. However, the thickness of the hole inspection machine is required to be above 1.0MM. It is soft and soft. When passing through the hole inspection machine without any reinforcement, not only the thickness of the FPC circuit board is not enough, but it is also prone to wrinkles or is directly involved in the machine, which seriously affects the quality and also affects the delivery time of the product.