TW201811139A - Leveling method of stuffing printing ink on printed circuit board and device thereof removing the ink adhered to the gyration band through solution impregnation gyration band - Google Patents

Abstract

The disclosure provides a leveling method of stuffing printing ink on printed circuit board comprising steps of providing a gyration band to circularly move along a cycle path and sequentially execute an adhering step and a cleaning step on the cycle path in circulation type, wherein the adhering step comprises stuffing printing ink on one surface of the printed circuit board by pressing and adhering via the gyration band. The cleaning step uses an ink solution to clean the ink adhered by the gyration band. The disclosure further provides a leveling device of stuffing printing ink on printed circuit board required for executing the foregoing method. Accordingly, the problem of worse leveling efficiency of stuffing printing ink on the surface of the conventional printed circuit board can be overcome.

Description

Method and device for leveling plugging ink on printed circuit substrate

The invention relates to a plugging ink on the surface of a printed circuit board, and in particular, to a method and a device for leveling the plugging ink on a printed circuit board.

A printed circuit board (PCB) is a composite of a multilayer conductive copper plate and an insulating plate. Each layer of the conductive copper plate is formed with a conductive line, which is isolated through the intervening of the insulating plate and through a plurality of buried holes drilled on the surface of the printed circuit board And through holes, so that multiple buried holes and through holes can be electrically connected to each layer of conductive lines to form a functional circuit after being filled with a conductive material.

It is also known that, in the above-mentioned manufacturing process of the printed circuit board, after the multiple buried holes and the through holes are drilled and formed, an insulation treatment must be performed first. The traditional insulation treatment method is generally screen printing. The insulating ink is coated on the double-end surface of the circuit substrate, so that the ink can be filled into the through holes and buried holes, and then the blade and the surface of the substrate are used. The relative moving contact action between them allows the ink not only to fill into the through-holes and buried holes, but also to scrape off the excess ink in the surface of the printed circuit board and the through-holes and buried holes, so as to facilitate the solder resist ink connection. Printing or spraying.

However, the above-mentioned method of ink plugging, because the plug saturation is required, the ink is easy to ooze out of the through hole and the buried hole, causing the ink overflow phenomenon on the two end surfaces of the printed circuit board. If the method of continuously covering the solder resist ink is Spraying method, this ink overflow phenomenon will affect the overall appearance and yield.

In order to overcome the above-mentioned problems, a known Taiwan Patent Publication No. M485589 discloses a leveling device for plugging ink on a printed circuit board, which uses a roller to contact the adhesive film, and uses the adhesive film to press the coated ink. Seal Brushing the double-end surface of the circuit substrate allows the excess ink on the double-end surface of the printed circuit board and in the through holes and buried holes to be removed from the double-end surface of the printed circuit board by rolling and sticking to the adhesive film , And to improve the yield of ink plugging operations.

However, since the adhesive film in the above patented technology is a consumable that must be discarded, especially when the adhesive film is stuck with ink, it must be collected in a bundle and discarded. It cannot be reused, so as to prevent the ink already attached to the adhesive film from being contaminated. To other printed circuit boards; leading to the need to frequently replace the new adhesive film in order to continue the above-mentioned process of sticking and leveling; in this way, not only increases the cost of consumables for the adhesive film, but also consumes the replacement of the adhesive film It is urgent to improve.

In view of this, the purpose of the present invention is to improve the traditional adhesive film used for sticking ink that cannot be reused. It needs to be replaced with a new adhesive film before the sticking and leveling process can be continued, thereby causing the surface of the printed circuit board. The problem of poor leveling efficiency after ink plugging.

In order to achieve the above object and solve the problem, a specific embodiment of the present invention is to provide a method for leveling plugging ink on a printed circuit board. The technical method includes: providing a revolving belt to circulate on a loop path, and the revolving A sticking step and a cleaning step are sequentially performed in a circular manner on the loop path, wherein the sticking step includes the rotary tape pressure contacting the plugging ink on one surface of the printed circuit board, and the cleaning The step includes cleaning a contaminated ink on the gyro tape with a solution.

In a further implementation, the above method further comprises: the convolute belt is composed of a loop-shaped belt or an adhesive film.

The printed circuit substrate includes two opposite surfaces on which a pinhole ink exists. The leveling method includes performing two opposite surfaces of the printed circuit substrate.

The turning belt is pressed against the surface of the printed circuit board by pressure from the roller.

The convolute belt cleans the ink by immersion in a solution.

The cleaning step further includes scraping off the ink remaining on the rotating belt with at least one doctor blade. Wherein, the doctor blade scrapes the ink after the solution cleans the ink on the rotating belt.

The above method can be implemented through a device technology. To this end, another specific embodiment of the present invention is to provide a leveling device for plugging ink on a printed circuit board. The technical means includes: a revolving belt, Cyclically moving on a loop path; a sticking zone station is located on the loop path, and the revolving belt passes through the sticking zone station and presses and touches the plugging ink on one surface of the printed circuit board; and A cleaning zone station, which is located on the loop path and spaced from the adhesion zone station. A solution is stored in the cleaning zone station, and the convoluted belt passing through the adhesion zone station contacts the solution in order to clean the Contaminated ink on the revolving belt.

In a further implementation, the above-mentioned device further comprises: the turning belt is composed of a loop-shaped belt or an adhesive film.

The printed circuit board includes two opposite surfaces having a plugging ink, and the number of the leveling devices is two, which are respectively disposed beside the two opposite surfaces of the printed circuit board.

The loop path has a plurality of rollers arranged at intervals, and the swing belt frame is held between the plurality of rollers. The plurality of rollers includes a pressure roller, and the rotating belt is pressed against the surface of the printed circuit board by pressure from the pressure roller.

The cleaning station includes a solution tank, and the solution is stored in the solution tank. The convoluted belt contacts the solution in the solution tank through the guide of at least one of the plurality of rollers.

The cleaning zone station further includes at least one scraper blade configured to contact and scrape the ink remaining on the revolving belt. The scraper is arranged on a swing arm, and the swing arm can swing to drive the scraper to contact and move away from the swing belt. The scraper is arranged above the solution tank adjacently.

The cleaning zone station also includes at least one scraper for contacting and The ink remaining on the revolving belt is scraped off, and an ink set is arranged at the bottom of the scraper blade to collect the ink scraped off by the scraper blade. The scraper is arranged on a swing arm, and the swing arm can swing to drive the scraper to contact and move away from the swing belt.

According to the above technical means, the technical effect that the present invention can produce is: impregnating the convolute belt with the solution to remove the ink attached to the convolute belt, and then scraping off the remaining ink on the convolute belt with a scraper to make the convolute belt. Can be used repeatedly to stick the ink on the printed circuit board, thereby improving the leveling efficiency of the plugged ink on the printed circuit board.

Please refer to the following embodiments and drawings for specific implementation details of the technical means of the methods and devices described above and their production efficiency.

10‧‧‧printed circuit board

11‧‧‧ surface

111‧‧‧first surface

112‧‧‧Second surface

12‧‧‧Drive roller

20‧‧‧ roundabout

201‧‧‧The first roundabout

202‧‧‧The first roundabout

30, 30a‧‧‧roller

31‧‧‧Press roller

40‧‧‧Sticky Station

50‧‧‧Clean District Station

51‧‧‧ solution

52‧‧‧solution tank

53‧‧‧Scraper

54‧‧‧ swing arm

55‧‧‧set ink tray

Steps of S1 to S3‧‧‧ embodiments

FIG. 1 is a flowchart of steps of an embodiment of the method of the present invention; FIG. 2 is a schematic diagram of a configuration of an embodiment of the apparatus of the present invention; and FIG. 3 is a schematic diagram of a configuration of another embodiment of the scraper in FIG. 2.

Please refer to FIG. 1 to describe a method for leveling plugging ink on a printed circuit board provided by the present invention, including providing a revolving belt 20 to perform the following steps S1 to S3:

Step S1: cyclic movement.

Please refer to FIG. 2, it is explained that the convolute belt 20 is laid on the side of the printed circuit board 10. The convolute belt 20 moves cyclically along a loop path. The convolute belt 20 can be pressed in a line contact or a surface contact manner. Surface 11 of the printed circuit board 10. Further, the turning belt 20 is framed between a plurality of rollers 30 spaced apart from each other. The turning belt 20 is pressed against the surface 11 of the printed circuit board 10 by the pressure of the roller 30.

Step S2: Stick the ink.

Please refer to FIG. 2 again, and explain that the convolute tape 20 presses against the surface 11 of the printed circuit board 10 and then sticks the plugging ink attached to the surface 11. Further, the convolute tape 20 can be used to contact the plugging ink on the surface 11 of the printed circuit board 10 by means of line contact or surface contact.

Step S3: Clean the ink.

Referring to FIG. 2, the convoluted belt 20 is immersed in a solution 51, and the ink adhered to the convoluted belt 20 is cleaned by the solution 51. Further, the cleaning step further includes at least one scraper blade 53 for scraping off ink remaining on one side of the revolving belt 20. The scraper 53 is based on the solution 51 and cleans the ink on the revolving belt 20. Thereafter, the ink scraping operation is performed. In addition, after performing the above-mentioned cleaning ink operation, the revolving belt 20 cyclically executes the operations of sticking ink and cleaning ink along a loop path.

On the other hand, referring to FIG. 2 again, the present invention also provides a device for leveling plugged ink on a printed circuit board, so that the method for leveling plugged ink on a printed circuit board can be easily implemented. It can be known from the above that the leveling device for plugging ink on the printed circuit board includes a revolving belt 20, a sticking area station 40 and a cleaning area station 50. Wherein, the printed circuit board 10 is placed between a plurality of spaced-apart driving rollers 12 which are guided on both sides of the printed circuit board 10 so that the printed circuit board 10 can be vertically aligned. Or, the printed circuit board 10 is processed (for example, ink is applied) by being displaced in a horizontal direction.

The turning belt 20 is framed between a plurality of rollers 30 and cyclically moves along a loop path. Further, the turning belt 20 may be implemented by a loop-shaped belt or a rubber film. The plurality of rollers 30 move the turning belt 20 in a meshing or friction manner. In specific implementation, the rotating belt 20 and the surface 11 of the printed circuit board 10 contact each other with a static friction force, that is, the moving speed of the rotating belt 20 and the printed circuit board 10 is the same, so that the relative speed between the two is zero. Therefore, the convolute tape 20 can be in close contact with the surface 11 of the printed circuit board 10, thereby improving the ink effect that the convolute tape 20 can be pressure-bonded and peeled off when it contacts the printed circuit board 10.

The adhesion zone station 40 is located on a loop path, and the convolute tape 20 presses against the surface 11 of the printed circuit board 10 in the adhesion zone station 40, and then adheres to the surface 11 of the printed circuit board 10 The plugging ink, that is, the convoluted belt 20 performs the step of sticking ink at the sticking zone station 40. Further, the plurality of rollers 30 includes a pressure roller 31. The pressure roller 31 is arranged beside the moving path of the printed circuit board 10. Touches the surface 11 of the printed circuit board 10. More specifically, the pressure roller 31 can apply pressure to the turning belt 20 by a spring or a driving element such as a pneumatic cylinder.

The cleaning zone station 50 is located on a loop path. A solution tank 52 is arranged in the cleaning zone station 50. The solution 51 is filled in the solution tank 52, and the swirling belt 20 is cyclically moved along the loop path to enter. The solution tank 52 is in contact with the solution 51, that is, the swirling belt 20 performs the step of cleaning the ink at the cleaning zone station 50. Further, at least one roller 30a of the plurality of rollers 30 is adjacent to above the solution tank 52, and the turning belt 20 contacts the solution 51 in the solution tank 52 along a loop path through the guide of the roller 30a. The roller 30a can be used as a driving wheel for driving the turning belt 20 to move along the loop path.

The scraper 53 is disposed in the cleaning zone station 50 in practice, and the ink remaining on the revolving belt 20 is scraped by the scraper 53 to contact and scrape. Further, the scraper 53 is fixed on a swing arm 54, and the swing arm 54 can drive the scraper 53 to swing, so that the scraper 53 contacts and moves away from the turning belt 20, and the scraper 53 contacts the turning belt 20 to scrape the scraper 53. The ink remaining on the convolute belt 20. In specific implementation, the number of the doctor blades 53 may be two, and the two doctor blades 53 are respectively disposed on opposite sides of the revolving belt 20, and the ink adhering to the revolving belt 20 is scraped off by the two doctor blades 53.

Please refer to FIG. 2 again, and explain that the scraper 53 is disposed adjacent to the solution tank 52 in practice, so that the ink scraped off by the scraper 53 from the revolving belt 20 can be concentrated in the solution tank 52, in addition to facilitating the recovery of the ink. In addition, the floor or other objects can be protected from ink contamination.

Referring to FIG. 3, it is explained that the bottom of the scraper 53 can be further provided with an ink set 55 for collecting ink scraped off by the scraper 53 from the rotating belt 20. Compared with the scraper 53 described above, For the embodiment that needs to be arranged above the solution tank 52, the scraper 53 in this embodiment has a large arrangement space.

Referring to FIG. 2, it is described that the convolute belt 20 includes a first convolute belt 201 and a second convolute belt 202 in practice. The first convolute belt 201 and the second convolute belt 202 are respectively disposed on two parts of the printed circuit board 10. Opposite surface 11. Further, two opposite surfaces 11 of the printed circuit substrate 10 include a first surface 111 and a second surface 112. The first turning belt 201 is used to contact the first surface 111 of the printed circuit substrate 10, and the second The turning belt 202 is used to contact the second surface 112 of the printed circuit board 10.

The above embodiments merely express the preferred embodiments of the present invention, but cannot be understood as limiting the scope of patents of the present invention. Therefore, the present invention shall be subject to the content of the claims defined in the scope of the patent application.

Steps of S1 to S3‧‧‧ embodiments

Claims (19)

A method for leveling plugging ink on a printed circuit substrate includes: providing a revolving belt to cyclically move on a loop path, and the revolving belt sequentially performing a sticking step and a cleaning step on the loop path in sequence; Wherein, the sticking step includes pressing the convoluted tape to touch the plugging ink on a surface of the printed circuit board, and the cleaning step includes cleaning a contaminated ink on the convoluted tape with a solution. The method for leveling the plugging ink on the printed circuit board according to item 1 of the scope of the patent application, wherein the turning belt is composed of a loop-shaped belt or an adhesive film. The method for leveling the pinhole ink on a printed circuit board according to item 1 of the scope of the patent application, wherein the printed circuit board includes two opposite surfaces in which the pinhole ink is present, and the leveling method includes two steps performed on the printed circuit board. Opposite surface. According to the method for leveling the plugging ink on the printed circuit board according to item 1, 2, or 3 of the scope of the patent application, wherein the rotating belt is pressed against the surface of the printed circuit board by pressure from the roller. The method for leveling the plugging ink on a printed circuit board according to item 1, 2, or 3 of the scope of the patent application, wherein the convolute belt is immersed in a solution to clean the ink. According to the method for leveling the plugging ink on the printed circuit board according to item 1, 2 or 3 of the scope of the patent application, the cleaning step further includes scraping off the ink remaining on the rotating belt with at least one doctor blade. The method for leveling the plugging ink on the printed circuit board according to item 6 of the scope of the patent application, wherein the doctor blade performs scraping off the ink after the solution cleans the ink on the rotating belt. A leveling device for plugging ink on a printed circuit board includes: a revolving belt, which is circulated on a loop path; a sticking zone station is located on the loop path, and the revolving belt passes through the loop path. A sticky area station that presses and touches the plugging ink that sticks to one surface of the printed circuit board; and a cleaning area station that is located on the loop path and spaced from the sticky area station, inside the clean area station A solution is stored, and the convoluted belt passing through the sticking area station contacts the solution one by one to clean the ink attached to the convoluted belt. According to the eighth aspect of the patent application, the leveling device for plugging ink on a printed circuit board, wherein the rotating belt is composed of a loop-shaped belt or an adhesive film. As described in item 8 of the scope of the patent application, a leveling device for plugging ink on a printed circuit board, wherein the printed circuit board includes two opposite surfaces having pinhole ink, and the number of the leveling devices is two, which are respectively disposed on the printing board. Sides of two opposite surfaces of the circuit substrate. For example, the leveling device for plugging ink on a printed circuit board according to item 8, 9 or 10 of the scope of patent application, wherein the loop path has a plurality of spaced-apart rollers, and the swing belt is held between the plurality of rollers. . According to the eleventh aspect of the patent application, the leveling device for plugging ink on a printed circuit board, wherein the plurality of rollers includes a pressure roller, and the turning belt is pressed by the pressure roller to touch the stain. The surface of the printed circuit board is stuck. According to the eleventh leveling device for plugging ink on a printed circuit board according to the scope of the patent application, the cleaning zone station includes a solution tank, and the solution is stored in the solution tank. The leveling device for plugging ink on a printed circuit board according to item 13 of the scope of the patent application, wherein the rotating belt contacts the solution in the solution tank through the guide of at least one of the plurality of rollers. According to the thirteenth aspect of the patent application, the leveling device for plugging ink on the printed circuit board, wherein the cleaning area station further includes at least one scraper blade configured to contact and scrape off the ink remaining on the rotating belt. As described in Item 15 of the scope of patent application Leveling device, wherein the scraper is arranged on a swing arm, and the swing arm can swing to drive the scraper to contact and move away from the swing belt. The leveling device for plugging ink on a printed circuit board according to item 15 of the scope of the patent application, wherein the scraper is arranged adjacent to the solution tank. The leveling device for plugging ink on a printed circuit board according to item 11 of the scope of the patent application, wherein the cleaning area station further includes at least one scraper blade configured to contact and scrape off the ink remaining on the rotating belt, and the An ink set is also arranged at the bottom of the scraper to collect the ink scraped off by the scraper. For example, the leveling device for plugging ink on a printed circuit board according to item 18 of the scope of the patent application, wherein the scraper is arranged on a swing arm, and the swing arm can swing to drive the scraper to contact and move away from the swing belt.