Child-mother type air guide board suitable for macroporous resin hole plugging and design method thereof

Abstract

The invention relates to a child-mother type air guide board suitable for macroporous resin hole plugging and a design method thereof. The air guide board is designed to be composed of two parts. Onepart is an alignment module, and the alignment module is a mother board; the other part is a plurality of air guide modules, and the air guide modules are child boards. The invention also discloses manufacturing of the alignment module and manufacturing of the air guide module. In use, the manufactured alignment module is fixed on a machine table, a plurality of manufactured air guide modules arereplaced by turns for use, in particular, after one board is printed, the first child board is removed and replaced by a second child board, the first child board is taken to be cleaned, when the second child board finishes printing, the second child board is replaced by a third child board, when the third child board finishes printing, the well-cleaned first child board is used, the third child board is taken to be cleaned, and due to such repeated operation, ink collected on the child boards can be cleaned away in time, and the problems that little ink is accumulated to a large amount and reverse adhesion is formed are solved.

Description

technical field [0001] The invention relates to the technical field of air guide design for plug holes of printed circuit boards, in particular to an air guide plate adaptable to macroporous resin plug holes and a design method thereof. Background technique [0002] When plugging the Via hole of PCB anti-soldering, in order to ensure that the ink in the hole is full and does not stick to the machine, usually when plugging the hole and printing the first side, a special air guide plate will be placed on the machine, and the air guide plate will be drilled on it. The holes correspond to the Via holes on the PCB board to be plugged. Usually, the hole diameter of the plug hole is 0.2 mm to 0.6 mm, and the hole diameter of the corresponding air guide plate is all 2.0 mm. There are also some factories that have designed universal air deflectors. There are two common types: [0003] One is a drilled air guide plate, using a 2.0mm drill to drill densely packed holes on the air gui...

AI Technical Summary

Problems solved by technology

It has the following design defects: a. There are too many (few) remaining parts between the holes, and most of the holes cannot achieve the air-guiding effect; less, it cannot play an effective supporting role, resulting in no force when plugging the hole, uneven oil emission, etc.

b. A large amount of ink remains or is clogged in the air guide hole and the washing is not clean, which seriously shortens the service life; c. The number of holes in the air guide plate is more than tens of thousands, and the production time is too long

[0004] The above-mentioned air guide plate is used for the macroporous resin plug hole. At present, the main problem is that the Dimple is relatively large, and the defect rate is about 20%; the plug hole ink is perforated and transparent, and the defect rate is about 70%. It goes in and flows out at the other end of the hole, resulting in no ink in the hole that needs to be plugged with resin, and the phenomenon of white light appears when inspected under light; for the perforation of macroporous resin plug hole, the defect layer analysis is carried out, and the proportion of about 40% is found It is caused by the adhesion of resin ink to the air guide plate: when printing resin ink, due to the large hole diameter of the plug hole, the fluidity of the resin ink is greater than that of the small hole under the action of gravity inertia, and oil accumulation occurs on the lower ink surface, and the accumulated ink It is easy to adhere to the air guide plate. When the plate is taken out after printing, the ink will be pulled due to the adhesion, and the ink stuck in the hole will be pulled off, and the resin ink will perforate and transmit light.

[0005] With the diversified development of electronic products, some products require macroporous resin plugging to meet specific product characteristics. At present, the characteristics of PCB board factories and special resin plugging inks rarely meet the large-aperture resin plugging process and resin ink. Conventional The hole diameter of the resin plug hole is ≤0.5mm. For the hole diameter above 0.5mm, there are defects such as too large plug hole depression, perforation and light transmission.

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