CN102123564B - Conformal coating shielding method of circuit board - Google Patents
Conformal coating shielding method of circuit board Download PDFInfo
- Publication number
- CN102123564B CN102123564B CN 201010559656 CN201010559656A CN102123564B CN 102123564 B CN102123564 B CN 102123564B CN 201010559656 CN201010559656 CN 201010559656 CN 201010559656 A CN201010559656 A CN 201010559656A CN 102123564 B CN102123564 B CN 102123564B
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- circuit board
- gum cover
- rubber
- lacquers
- cover
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- Non-Metallic Protective Coatings For Printed Circuits (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a conformal paint coating shielding method of a circuit board, comprising the following steps: manufacturing a shielding rubber sleeve according to circuit board products of different types; and in the process of spraying and coating, sheathing the shielding rubber sleeve on certain parts, incapable of being sprayed, of the circuit board for shielding, wherein the shielding rubber sleeve is made of anti-static rubber, and can be prevented from generating static electricity in the plugging and pulling process and further damaging electrostatic-sensitive devices on the circuit board, and the rubber sleeve is in an elastic design, is made of high-temperature-resistant inertial rubber, does not generate reaction and bonding with a conformal paint, and can be repeatedly used. The conformal coating shielding method is more suitable for devices in complex shapes of the circuit board, the electrostatic hazards can be eliminated, the efficiency is high, effective shielding can be formed, the spraying quality can be effectively guaranteed, the control is easy, and the repeated use of the rubber sleeve ensures that the cost in actual production is lowered.
Description
Technical field
The present invention relates to the technology of spraying paint, specifically relate to a kind of circuit board three anti-lacquer coating masking methods.
Background technology
Wiring board in use, may be in the different environment, such as chemical substance (fuel, cooling agent etc.), vibrations, high dirt, salt fog, moist and high temperature etc., so wiring board can produce the problems such as burn into softens, is out of shape, goes mouldy, and causes the wiring board circuit to break down.Three anti-lacquers are a kind of coating of special formulation; three anti-lacquers are coated on the surface of wiring board; form the diaphragm (three prevent referring to protection against the tide, anti-salt fog, mildew-resistant) that one deck three is prevented; diaphragm can protective circuit be avoided infringement under the environment such as chemistry, vibrations, high dirt, salt fog, humidity and high temperature; improve the reliability of wiring board, increase its coefficient of safety.
Various circuit board products need to cover some positions of the circuit board that can not spray paint in the process of coating of spraying paint, and do not need the position that applies to prevent that three anti-lacquers are coated in, and can reduce the results of use of radiators such as heat dissipation for circuit board device coating three anti-lacquers.The position that does not need to apply has: heat dissipation for circuit board device, base, potentiometer, insurance, button, charactron, high-power resistance, lock body, connector etc.
The patent No. is CN101474613A, open day be July 8 in 2009 day, be called the patent of invention of " lacquer spraying technique of product ", put down in writing in its claims: " step 1, paster: the position that product does not allow to spray paint is covered with paster; ", " step 7, lower tool: will take off from the oil spout tool through the product of oil spout, unload plug and tear gummed paper operation ".In the middle of the gummed paper bonding process, need to the shape of gummed paper according to different components, cut into one, one again bonding.Gummed paper and device will have certain bonding firmness, effectively cover guaranteeing, after coating is complete, need to peel off removal, easily produce static in the process of peeling off, and are a kind of potential harm to circuit board.And peel off finish after because the viscosity of gummed paper can stay sicker on the surface of crested, need to use alcohol to clean sicker, these measures wastes man-hours, efficient is low, protection effect is poor.In addition, the quality of gummed paper bonding will directly have influence on the quality of coating, and wayward.Because screening effect is bad, the quality problems that cause repeatedly occur.
The patent No. is CN2822785Y, open day be October 4 in 2006 day, be called " clamp for shielding use during paint-spraying ", this patent discloses a kind of easy-to-dismount spray paint shield mould, its technical scheme is in actuating arm by External Force Acting, it is actuating arm generation strain, thereby realize that plug connector separates with being fixed in of retainer, finish the shielding function of painting process, because its actuating arm elastic deformation level is limited, and for the device that concaves relatively difficulty apply external force, its screening effect can be affected.
The patent No. is CN201197977Y, open day be February 25 in 2009 day, be called " clip type spray paint shield mould ", this patent discloses the mould that a kind of inboard is provided with grab, the mode that this mould hooks together with grab is engaged on to be with on the product that sprays paint, and covers non-painting zone.Although this mould convenient operation, dismounting is simple, and screening effect is not good, for complex-shaped device, and its Design of Dies operating difficulties.
Summary of the invention
In view of the above-mentioned prior art problem that masking methods exists when three prevent spraying paint, the object of the present invention is to provide a kind of circuit board three anti-lacquer coating masking methods, the method is more suitable for wiring board complicated shape device, can eliminate electrostatic hazard, efficient is high, can form effectively to cover, and can effectively guarantee the quality of spraying paint, be easy to control, and use the method can reduce the cost in the actual production.
For achieving the above object, the technical scheme taked of the present invention is as follows:
A kind of circuit board three anti-lacquer coating masking methods, described masking methods may further comprise the steps:
(1) according to shape, the size of circuit board institute mounting related components, determine to cover size and the shape of gum cover, make and cover gum cover.
(2) will cover the position that gum cover is enclosed within does not need to apply three anti-lacquers;
(3) circuit board surface is carried out dust removal process;
(4) coating three anti-lacquers;
(5) circuit board is toasted processing;
(6) gum cover is covered in dismounting, in order to reusing;
The described preparation material that covers gum cover is antistatic rubber, and described antistatic rubber comprises that silicon rubber or natural rubber add carbon black.
An again preferred version of the present invention is: said antistatic rubber sheet resistance is 1 * 10
4-3 * 10
4Ohm
Of the present invention again take preferred version as: the described gum cover that covers is as Flexible Design.
Of the present invention again take preferred version as: the described preparation material that covers gum cover is as keeping the inertia rubber of superperformance under 50-80 ℃ bad border.
Of the present invention again take preferred version as: the described preparation material that covers gum cover is as keeping the inertia rubber of superperformance under 70 ℃ bad border.
Owing to having adopted technique scheme, beneficial effect of the present invention is as follows:
1, the inventive method can form and effectively cover, and the quality of spraying paint improves
Because this method is according to the different product device characteristics, makes the rubber gum cover of various shapes, is enclosed within on the device, form a kind of covering, this rubber gum cover wall thickness is about 1～1.5mm, and is flexible, three anti-lacquers are difficult for infiltration, can form effectively device and cover, and have greatly improved the quality of spraying paint.
2, eliminate electrostatic hazard
This rubber gum cover designs for antistatic, and adopting silicon rubber or natural rubber to add carbon black is that the rubber gum cover prepares material, so the inventive method is eliminated the potential hazard that static exists circuit board components.
3, but rubber gum cover Reusability reduces production costs
This rubber gum cover is high temperature resistant inertia rubber, can not form reaction with the mildew resistance polyurethane paint that uses in the actual production, and can under 70 ℃ hot environment, keep premium properties, but so this rubber gum cover Reusability, reduce production costs.
4, production efficiency is high
The inventive method is covered a circuit board the most complicated, can finish in 1 minute, has greatly improved production efficiency, is conducive to the Industry Promotion of this inventive method.
Description of drawings
Accompanying drawing has been chosen 3 gum cover schematic diagrames
Fig. 1 is that radiator covers the gum cover schematic diagram;
Fig. 2 is that charactron covers the gum cover schematic diagram;
Fig. 3 is that the AMP socket covers the gum cover schematic diagram;
Reference numeral:
1. radiator covers gum cover, and 2. charactron covers gum cover, and the 3.AMP socket covers gum cover
Specific embodiment
Below in conjunction with accompanying drawing, the inventive method is conducted further description:
Embodiment 1:
As shown in Figure 1, cover gum cover according to geometry, the size making of radiator on the circuit board, before coating, to cover gum cover and be enclosed within on this radiator, then apply three anti-lacquers, and cover gum cover and play screening effect, guarantee that this radiator is not subject to the pollution of three anti-lacquers, radiating effect is unaffected.
Embodiment 2:
As shown in Figure 2, gum cover is covered in geometry, size making according to digital display module on the circuit board, before coating, to cover gum cover is enclosed within on this digital display module, then apply three anti-lacquers, cover gum cover and play screening effect, guarantee that this digital display module is not subject to the pollution of three anti-lacquers, do not react with three anti-lacquers, thus the display effect of assurance digital display module.
Embodiment 3:
As shown in Figure 3, gum cover is covered in geometry, size making according to AMP socket on the circuit board, before coating, to cover gum cover and be enclosed within on this AMP socket, then apply three anti-lacquers, and cover gum cover and play screening effect, guarantee that three anti-lacquers can not rise on the pin because of capillarity, guarantee that the device pin on the socket can be owing to the pollutions of three anti-lacquers, and cause and the socket pins insulation, affect the product conduction property.
Claims (5)
1. circuit board three anti-lacquers apply masking methods, it is characterized in that described masking methods may further comprise the steps:
(1) according to shape, the size of circuit board institute mounting related components, determine to cover size and the shape of gum cover, make and cover gum cover;
(2) will cover the position that gum cover is enclosed within does not need to apply three anti-lacquers;
(3) circuit board surface is carried out dust removal process;
(4) coating three anti-lacquers;
(5) circuit board is toasted processing;
(6) gum cover is covered in dismounting, in order to reusing;
The described preparation material that covers gum cover is antistatic rubber, and described antistatic rubber comprises that silicon rubber or natural rubber add carbon black.
2. a kind of circuit board three anti-lacquers as claimed in claim 1 apply masking methods, and it is characterized in that: said antistatic rubber sheet resistance is 1 * 10
4-3 * 10
4Ohm.
3. circuit board three anti-lacquers as claimed in claim 1 apply masking methods, and it is characterized in that: the described gum cover that covers is Flexible Design.
4. circuit board three anti-lacquers as claimed in claim 1 apply masking methods, it is characterized in that: the described preparation material of gum cover that covers is for keeping the inertia rubber of superperformance under 50-80 ℃ bad border.
5. a kind of circuit board three anti-lacquers as claimed in claim 4 apply masking methods, it is characterized in that: the described preparation material of gum cover that covers is for keeping the inertia rubber of superperformance under 70 ℃ bad border.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010559656 CN102123564B (en) | 2010-11-26 | 2010-11-26 | Conformal coating shielding method of circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010559656 CN102123564B (en) | 2010-11-26 | 2010-11-26 | Conformal coating shielding method of circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102123564A CN102123564A (en) | 2011-07-13 |
| CN102123564B true CN102123564B (en) | 2013-05-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010559656 Expired - Fee Related CN102123564B (en) | 2010-11-26 | 2010-11-26 | Conformal coating shielding method of circuit board |
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| Country | Link |
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| CN (1) | CN102123564B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102752973B (en) * | 2012-03-22 | 2016-01-06 | 深圳市英威腾电气股份有限公司 | Electronic equipment |
| CN102950092B (en) * | 2012-11-09 | 2015-01-14 | 沈阳黎明航空发动机(集团)有限责任公司 | Insulation protection method for thermally-cured painted parts |
| CN105451449A (en) * | 2015-12-11 | 2016-03-30 | 苏州米达思精密电子有限公司 | Fabrication method of reinforce panel with single paint surface |
| CN105392277A (en) * | 2015-12-11 | 2016-03-09 | 苏州米达思精密电子有限公司 | Reinforcing panel steel belt with single painted surface |
| CN114286531B (en) * | 2020-09-28 | 2024-05-14 | 深南电路股份有限公司 | Masking device and coating jig |
| CN112221883A (en) * | 2020-11-18 | 2021-01-15 | 伟创力电子技术(苏州)有限公司 | A protection anchor clamps for glue coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2580735Y (en) * | 2002-11-15 | 2003-10-15 | 倚天资讯股份有限公司 | Shielding structure for protecting from jamming by noise |
| CN101378628A (en) * | 2007-08-27 | 2009-03-04 | 燿华电子股份有限公司 | Sticking method for local additional sticking material of various printed circuit boards |
| CN201421469Y (en) * | 2009-04-09 | 2010-03-10 | 宁波三星电气股份有限公司 | Multifunctional energy meter |
-
2010
- 2010-11-26 CN CN 201010559656 patent/CN102123564B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2580735Y (en) * | 2002-11-15 | 2003-10-15 | 倚天资讯股份有限公司 | Shielding structure for protecting from jamming by noise |
| CN101378628A (en) * | 2007-08-27 | 2009-03-04 | 燿华电子股份有限公司 | Sticking method for local additional sticking material of various printed circuit boards |
| CN201421469Y (en) * | 2009-04-09 | 2010-03-10 | 宁波三星电气股份有限公司 | Multifunctional energy meter |
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| Publication number | Publication date |
|---|---|
| CN102123564A (en) | 2011-07-13 |
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