PCB separate aluminum cover hole plugging method

A technology of plug holes and aluminum caps, which is applied in the manufacture of printed circuits, electrical components, and printed circuits. It can solve the problems of light transmission, false copper leakage, and rejection of soldering wires, etc., and achieves a high degree of standardization and high quality stability. , the effect of reducing working time

Active Publication Date: 2021-07-06
WUS PRINTED CIRCUIT (KUNSHAN) CO LTD
7 Cites 0 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0002] Electronic information products are updated quickly, and PCB ink plug holes are easily affected by poor personnel control
Due to the expansion and contraction of the machine, the board, and personnel factors, the uneven penetration of the plug hole of the board due to the abnormality of the machine, board, and personnel in the ink printing plugging process, and the direct upper surface printing will cause yellowing or false leakage of the local plug hole orifice. Copper, even light-transmitting, there is a risk of copper leakage in the hole or hole of the ...
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Method used

Separate the plug hole ink printing, avoid the phenomenon that the ink hole is not blocked or the explosion hole shown in Figure 1, thereby improving the functional impact that the plug hole is badly brought, ensuring that the plug hol...
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Abstract

The invention discloses a PCB separate aluminum cover hole plugging method, which comprises the following steps of: (1) judging whether separate aluminum cover data needs to be manufactured or not according to different aperture sizes and different hole patterns, and manufacturing a corresponding aluminum cover hole plugging plate if the separate aluminum cover data needs to be manufactured; (2) adding a first aluminum cover hole plugging plate on the conventional hole plugging net for scraping, printing and hole plugging, and rolling to be flat; then, taking out the first aluminum cover hole plugging plate, and adding a second aluminum cover hole plugging plate for scraping, printing and hole plugging and rolling to be flat; if a plurality of aluminum cover hole plugging plates exist, performing the operation in sequence; and (3) after hole plugging is completed, performing normal exposure, development and curing operations, and then manufacturing a finished PCB through molding, surface treatment and functional testing. According to the PCB aluminum cap separating and hole plugging method, the process is simple, the standardization degree is high, the operation time can be shortened by 12-24 hours compared with the operation time of a method for soaking, washing and reworking through one aluminum cap hole plugging plate, and the quality stability is high.

Application Domain

Conductive pattern formation

Technology Topic

Composite materialManufacturing engineering +2

Image

  • PCB separate aluminum cover hole plugging method
  • PCB separate aluminum cover hole plugging method

Examples

  • Experimental program(1)

Example Embodiment

[0018] The present invention will be further described below with reference to the accompanying drawings.
[0019] A PCB fraction aluminum cover plug hole method, including the following steps:
[0020] (1) Depending on the different aperture size and different hole type, it is judged whether or not to make a separate aluminum cover is required, and if necessary, the corresponding aluminum cover plate is required.
[0021] Determination Debt: (a) There are two or more pose hole diameters on the PCB, the maximum aperture is greater than 0.6 mm, or the maximum aperture difference between the maximum aperture and the minimum aperture is greater than 0.15 mm, it is necessary to make a separate aluminum cover material.
[0022] (B) When there are different types of plug holes on the PCB, it is necessary to make a separate aluminum cover.
[0023] When the above conditions (a) and (b) are not satisfied, the plug hole is completed using a aluminum cover.
[0024] Making process of aluminum cover data: according to the number of plug holes in different pores, or the number of aluminum covers the number of plug holes; in accordance with the distribution of the plug holes on the PCB, the position drilling production leakage The ink point forms an aluminum cover hole plate, and an aluminum cover plate is fabricated with a leak hole corresponding to a hole diameter plug or a type plug hole.
[0025] If the plug hole design in the PCB is more than 25mil, the leakage point of the aluminum cover can be large-2 to 4 mils, and the plug hole and the non-plug pitch of the PCB are less than or Oriented equal to 25mil, the leakage point of the aluminum cover is large-6 ~ 0mil than the plug hole.
[0026] (2) The first aluminum cover hole is added to the conventional plug hole, and the spray hole is formed; then the first aluminum cover plate is removed, and the second aluminum cover hole plate is added to the scratch. Hole, rolling; if there is a plurality of aluminum cover, the aforementioned operation is performed. The aluminum cover is separated, and the amount of ink is separated, preventing the problem of dip gold or Tin and osmium plating after surface treatment of gold or tin.
[0027] Among them, the scratch hole to the rolling interval at T 1 Time, T 1 ≤ 20 min. During the completion of the cleaning, the coating duration is controlled in T during the completion of the plug holes. 2 Time, T 2 ≤ 1h, the faster the spray is, the better.
[0028] Separate the plug in ink printing, avoiding the ink hole is not blocked or figure 1 The phenomenon shown, thereby improving the functional effect of the poor poles, and the piston hole mouth is not leaked, the plug hole depth is qualified, and the refusal welding wire is firm and reliable, and the method of the method of the present invention is used. figure 2 Indicated.
[0029] (3) After completing the plug, normal exposure, development, curing operation, and then produce the finished PCB by molding, surface treatment, functional testing.
[0030] The above is merely the preferred embodiment of the present invention, and it should be noted that in terms of one of the art in the art, several improvements and moisters can also be made without departing from the principles of the invention. It should be considered as a scope of the present invention.
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PUM

PropertyMeasurementUnit
Aperture>= 0.6mm
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

  • Simple process
  • High degree of standardization
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