CN111836475A

CN111836475A - Manufacturing method of blue rubber plate with hole diameter of more than 2.0mm and printing tool

Info

Publication number: CN111836475A
Application number: CN202010736886.1A
Authority: CN
Inventors: 马卓; 王志明
Original assignee: Shenzhen Xunjiexing Technology Corp ltd
Current assignee: Shenzhen Xunjiexing Technology Corp ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2020-10-27

Abstract

The invention provides a manufacturing method of a blue rubber plate plugging and tape printing tool with an aperture of more than 2.0mm, which comprises the following steps: taking a white screen, sealing screen paste on the screen, drying the screen, developing, drying the screen, and punching. Due to the adoption of the technical scheme, the manufacturing process is simplified, the additional screen printing plate surface is not needed after the blue glue hole sealing is carried out, the cost is saved, and the yield is improved.

Description

Manufacturing method of blue rubber plate with hole diameter of more than 2.0mm and printing tool

Technical Field

The invention belongs to the field of printed circuit board manufacturing, and particularly relates to a manufacturing method of a blue gel plate plug-in tape printing tool with an aperture of more than 2.0mm in a blue gel printing process.

Background

The blue glue printing process is a process for printing a layer of blue glue on some parts of a PCB in a screen printing mode or an aluminum sheet screen printing mode and playing a role in protection and resistance welding after curing. When only holes with the aperture smaller than 2.0mm need to be sealed by blue gel, the blue gel can be directly printed by adopting a screen printing mode, and the holes can be sealed while the board surface is printed; if the holes with the aperture larger than 2.0mm need to be sealed by blue gel, and the shape of the blue gel is regular, an aluminum sheet silk-screen printing mode can be directly adopted; however, the blue glue is irregular in shape, and is inconvenient to use for forming an aluminum sheet, and the current method which is commonly used in the industry is to simultaneously print a plate surface by adopting a screen printing mode and seal holes by adopting the aluminum sheet. The current industry is more common in the preparation method of the blue printing glue: drilling an aluminum sheet, plugging holes with blue glue, curing, printing the blue glue on the surface of the board by screen printing, and curing. At this time, two tools, namely blue gel film and aluminum sheet, are needed, and the process is complicated.

Disclosure of Invention

The invention provides a manufacturing method of a blue rubber plate plugging and tape printing tool with an aperture of more than 2.0mm, which aims to solve at least one technical problem.

In order to solve the above problems, an aspect of the present invention provides a method for manufacturing a blue offset plate plug-in tape printing tool with an aperture of 2.0mm or more, comprising:

step 1, taking a white net: taking an unused white net;

step 2, screen sealing slurry on the screen printing plate: the plate scraping groove is attached to the front side and the back side of the white screen, and the photosensitive paste is coated on the front side and the back side of the gauze from bottom to top for 2-3 times;

step 3, drying the screen printing plate: baking at 40 + -2 deg.C for 45-50min, and oven drying the photosensitive paste;

step 4, drying the screen plate: sticking the blue gel film to the screen plate bottom, exposing by using a special screen plate exposure machine to enable the photosensitive slurry film which is not shielded by the negative plate to react, and forming a required circuit pattern on the surface of the screen plate coated with the photosensitive slurry film;

and step 5, developing: washing the exposed screen printing plate in the step (4) with water, and punching a pattern in a blue printing glue area;

step 6, drying the screen printing plate: baking at 40 + -2 deg.C for 45-50min after development, and oven drying the screen plate developed in step 4;

step 7, punching: and (4) flattening the screen printing plate dried in the step (6), punching out the gauze at the position of the circular pattern on the circular pattern corresponding to the position of the PCB needing blue gel hole plugging by using a cylindrical belt puncher, and forming holes with the size equal to that of the position of the PCB needing blue gel hole plugging.

Due to the adoption of the technical scheme, the manufacturing process is simplified, the additional screen printing plate surface is not needed after the blue glue hole sealing is carried out, the cost is saved, and the yield is improved.

Drawings

FIG. 1 schematically illustrates a schematic view of a 2.0mm or larger aperture blue gel plate plugging tape printing tool;

FIG. 2 schematically shows a schematic view of step 1;

FIG. 3 schematically shows a schematic view of step 2;

FIG. 4 schematically shows a schematic view of step 4;

FIG. 5 schematically shows a graphical enlargement of step 4;

FIG. 6 schematically shows a pattern before punching;

figure 7 schematically shows the pattern after punching.

Reference numbers in the figures: 1. aligning holes are printed in a silk screen mode; 2. printing a blue glue surface oil position graph; 3. the hole is plugged by blue gel with the aperture of more than 2.0 mm; 4. photosensitive paste; 5. a circular pattern; the circular pattern at the position corresponds to the blue glue plug hole position of the PCB

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

The invention adopts a plug-connecting belt printing mode, directly forms holes on a screen plate after exposure and development, and punches out the gauze at the positions of the screen plate and a PCB plate needing blue gel hole plugging so as to form holes with the same size as the PCB plate on the screen plate. When the blue gel is printed by the screen printing method, the blue gel can flow into the inner hole of the corresponding PCB through the hollow hole on the screen printing plate, the hole (more than 2.0 mm) of the position of the PCB needing the blue gel printing is plugged, and the surface of the PCB is sealed.

Thus, when the blue printing glue is used for manufacturing, the process comprises silk printing of the blue printing glue and curing, and by adopting the blue printing glue, the processes of drilling an aluminum sheet, plugging a blue printing glue hole and curing the blue printing glue once can be omitted, so that two operations are reduced into one operation, and meanwhile, the cost is saved.

The invention firstly normally coats a layer of photosensitive paste on the silk screen plate; drying the mixture under certain temperature and time conditions; then, the film pattern is transferred into a printing pattern through exposure and development; then curing the mixture under certain temperature and time conditions; then, the screen printing plate is laid flat, and holes with the same size as the circular pattern are punched on the circular pattern at the position of the screen printing plate corresponding to the PCB needing blue glue hole plugging by using a cylindrical belt puncher; then putting the screen printing plate on the screen printing machine; aligning the PCB with the screen printing plate, fixing the PIN needle on the table board according to the alignment hole of the PCB, debugging the machine station, printing the first piece, and determining mass production after Pass according to the thickness required by a client.

The invention relates to a manufacturing method of a printing plate with a printing tool in a plug-in manner, which comprises the following steps of taking a white screen, sealing screen paste on the screen, drying the screen, developing, drying the screen, and punching, and comprises the following specific steps:

step 1, taking a white net:

an unused 18T white net was taken.

Step 2, screen sealing slurry on the screen printing plate:

and (3) tightly attaching the plate scraping groove to the front and back surfaces of the white screen, and coating the photosensitive paste on the front and back surfaces of the gauze for 2-3 times from bottom to top.

Step 3, drying the screen printing plate:

baking at 40 + -2 deg.C for 45-50min, and oven drying the photosensitive paste.

Step 4, drying the screen plate:

the blue gel film is pasted on the screen plate bottom, and is exposed by a special screen plate exposure machine, so that the photosensitive slurry film which is not shielded by the negative film reacts, and a required circuit pattern is formed on the surface of the screen plate coated with the photosensitive slurry film. The position of the circular pattern 5 corresponds to the position of the blue glue plug hole of the PCB.

And step 5, developing:

and (4) washing the exposed screen printing plate in the step (4) with water, and punching a pattern in a blue printing glue area.

Step 6, drying the screen printing plate:

and (4) baking for 45-50min at the temperature of 40 +/-2 ℃ after the development, and drying the screen plate after the development in the step (4).

Step 7, punching:

and 6, flattening the dried screen printing plate, and punching out the gauze at the position of the circular pattern on the circular pattern corresponding to the position of the PCB needing blue gel hole plugging by using a cylindrical belt puncher so as to form holes with the size equal to that of the position of the PCB needing blue gel hole plugging.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for manufacturing a blue rubber plate plug-connection tape printing tool with an aperture of more than 2.0mm is characterized by comprising the following steps:

step 1, taking a white net: taking an unused white net;