CN113473731B

CN113473731B - Soaking equipment and line etching and film removing method

Info

Publication number: CN113473731B
Application number: CN202010246727.3A
Authority: CN
Inventors: 张利华; 张冀仁; 杨之诚; 周进群; 缪桦; 由镭
Original assignee: Shennan Circuit Co Ltd
Current assignee: Shennan Circuit Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2022-11-01
Anticipated expiration: 2040-03-31
Also published as: CN113473731A

Abstract

The application belongs to the technical field of printed circuit board manufacturing, and particularly relates to a soaking device and an etching line film removing method, wherein the soaking device comprises an upper water knife, a lower water knife, a carrying transmission mechanism and a water tray, the carrying transmission mechanism is used for carrying a piece to be soaked between the upper water knife and the lower water knife and conveying the piece to be soaked, and the upper water knife and the lower water knife are used for spraying a solution to the piece to be soaked; the water tray set up in the below of going up the water sword, just it sets up to go down the water sword in the cavity that the water tray formed, it bears to carry thing transport mechanism wait to soak the piece in the cavity that the water tray formed, the water tray is used for holding solution. The utility model provides a soaking equipment can be so that wait to soak when piece soaks in solution, and solution has circulating fluidity, can improve and soak the effect for through the streamlined operation that waiting to soak the piece and do not influence whole preparation of soaking the process, guarantee preparation efficiency, and improve the preparation yield of products such as printed circuit board.

Description

Soaking equipment and line etching and film removing method

Technical Field

The application belongs to the technical field of printed circuit board manufacturing, and particularly relates to a soaking device and a line etching and film removing method.

Background

The global production value of the Printed Circuit Board (PCB) industry accounts for more than one fourth of the total production value of the electronic component industry, and is the industry with the highest proportion in the subdivision industry of each electronic component. Due to its unique position in the electronics infrastructure industry, it has become the most active industry in the electronic component industry of the current generation.

The printed circuit board is manufactured through the processes of exposure, development, etching and film removal in the manufacturing process, and along with the introduction complexity and difficulty of products, an outer layer etching line subjected to etching is not completely removed after the film is removed, so that the printed circuit board is seriously scrapped, the cost is high, and the productivity task of the printed circuit board is tight.

Disclosure of Invention

The technical problem mainly solved by the application is to provide a soaking device and a line etching and film removing method, which can be used for improving the condition that line etching and film removing are not clean on the outer layer of a printed circuit board under the condition that the speed of the manufacturing process of the printed circuit board is not influenced.

In order to solve the technical problem, the application adopts a technical scheme that: the soaking equipment comprises an upper water knife, a lower water knife, a carrying transmission mechanism and a water tray, wherein the carrying transmission mechanism is used for carrying a piece to be soaked between the upper water knife and the lower water knife and conveying the piece to be soaked, and the upper water knife and the lower water knife are used for spraying a solution to the piece to be soaked; the water tray is arranged below the water feeding knife, the water feeding knife is arranged in a cavity formed by the water tray, the object carrying and conveying mechanism carries the object to be soaked in the cavity formed by the water tray, and the water tray is used for containing solution.

The application also comprises a second technical scheme, namely an etching line film removing method, wherein a printed circuit board after exposure, development and etching is conveyed by a carrying and conveying mechanism of the soaking equipment, and is output after film removing liquid carried by a water tray and film removing liquid sprayed by an upper water knife and a lower water knife, so that the printed circuit board is soaked by the film removing liquid; and (5) removing the film of the output printed circuit board.

The beneficial effect of this application is: different from the situation of the prior art, the soaking equipment provided by the application can be used for vertically spraying a to-be-soaked piece by arranging the upper water knife and the lower water knife which are vertically arranged, the to-be-soaked piece in the embodiment of the application can be an etched printed circuit board, and the solution is sprayed by the upper water knife and the lower water knife so as to spray the solution to the etched printed circuit board waiting to be soaked; by arranging the water tray, a cavity formed by the water tray can be used for collecting and carrying the solution sprayed by the upper water cutter and the lower water cutter, and the lower water cutter and the piece to be soaked are placed in the cavity formed by the water tray, so that the piece to be soaked can be immersed by the solution, and the piece to be soaked is soaked; this application embodiment, through the setting of arranging of above-mentioned water sword, lower water sword and water tray, can be so that when waiting to soak the piece and soak in solution, solution has circulating fluidity, avoid solution inefficacy or the efficiency that solution long-time use caused to reduce, make simultaneously to wait to soak the piece and have sufficient immersion time, can improve and soak the effect, make through the streamlined operation that the piece that waits to soak that soaks the process does not influence whole preparation, guarantee preparation efficiency, and improve the preparation yield of products such as printed circuit board. This application embodiment, carry thing transport mechanism through setting up, can be used for bearing and treat the piece of soaking to will treat the piece of soaking and arrange in between water feeding sword and the lower water sword, can will treat the piece of soaking and soak in the solution in the water tray cavity, and will treat that the piece of soaking transports out the water tray, carries out next step's process, does not influence the whole processing procedure of products such as printed circuit board.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of the construction of the soaking apparatus of the present application;

fig. 2 is a partially enlarged structural schematic diagram of the soaking device of the present application.

The implementation, functional features and advantages of the object of the present application will be further explained with reference to the embodiments, and with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that all directional indicators in the embodiments of the present application, such as upper and lower 8230, are only used to explain the relative position relationship, motion, etc. between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, technical solutions between the various embodiments of the present application may be combined with each other, but it must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should be considered to be absent and not within the protection scope of the present application.

The application provides a soaking device.

Referring to fig. 1 and fig. 2, in this embodiment, the soaking device includes an upper water knife 1, a lower water knife 2, a carrying transmission mechanism 3 and a water tray 4, the carrying transmission mechanism 3 is used for carrying a piece 5 to be soaked between the upper water knife 1 and the lower water knife 2 and conveying the piece 5 to be soaked, and the upper water knife 1 and the lower water knife 2 are used for spraying a solution to the piece 5 to be soaked; the water tray 4 is arranged below the upper water knife 1, the lower water knife 2 is arranged in a cavity formed by the water tray 4, the object carrying and conveying mechanism 3 bears the object to be soaked 5 in the cavity formed by the water tray 4, and the water tray 4 is used for containing solution.

The core content of the embodiment of the application is that the upper water knife 1 and the lower water knife 2 which are arranged up and down are arranged, so that the to-be-soaked piece 5 can be sprayed up and down, the to-be-soaked piece 5 in the embodiment of the application can be a printed circuit board after etching, and the solution is sprayed through the upper water knife 1 and the lower water knife 2, so that the etched printed circuit board waits for the to-be-soaked piece 5 to be sprayed with the solution; by arranging the water tray 4, a cavity formed by the water tray 4 can be used for collecting and carrying the solution sprayed by the upper water jet 1 and the lower water jet 2, and the lower water jet 2 and the piece to be soaked 5 are placed in the cavity formed by the water tray 4, so that the piece to be soaked 5 can be immersed by the solution, and the soaking of the piece to be soaked 5 is realized; this application embodiment, through the aforesaid upper water sword 1, lower water sword 2 and the setting of arranging of water tray 4, can make and wait to soak 5 when soaking in solution, solution has circulating fluidity, avoid the solution that solution long-time use caused to become invalid or the efficiency reduces, make simultaneously and wait to soak 5 and have sufficient immersion time, can improve and soak the effect, make through the streamlined operation that the piece 5 that waits to soak that soaks the process does not influence whole preparation, guarantee preparation efficiency, and improve the preparation yield of products such as printed circuit board. This application embodiment, carry thing transport mechanism 3 through setting up, can be used for bearing and treat soaking 5 to will treat soaking 5 and arrange in and go up water sword 1 and lower water sword 2 between, can will treat soaking 5 and soak in the solution in 4 cavities of water tray, and will treat soaking 5 transportation water tray 4, carry out next step's process, do not influence the whole processing procedure of products such as printed circuit board.

Specifically, in the embodiment of the present application, the object carrying and conveying mechanism 3 includes a bracket (not shown), an upper roller 31 and a lower roller 32, one end of the bracket is supported on the side wall of the water tray 4, and is used for supporting the upper roller 31 and the lower roller 32, a to-be-soaked member 5 is placed between the upper roller 31 and the lower roller 32, and the upper roller 31 and the lower roller 32 rotate to drive the to-be-soaked member 5 to be conveyed. The thing transmission device 3 that carries of this application embodiment is through setting up gyro wheel 31 and bottom roller 32, and the roll through upper and lower gyro wheel treats the transmission that soaks a 5 in order to drive, simultaneously, goes up gyro wheel 31, support, water tray 4 and lower water sword 2 and can enclose and establish into a relatively inclosed fluid cavity for a 5 is treated soaking in the abundant contact of liquid, makes and treats that a 5 can reach the utility of better soaking.

In the embodiment of the present application, the water tray 4 is provided with a water outlet 41, the water outlet 41 is connected to a first pipeline 42, the first pipeline 42 is provided with a first adjusting valve 43, and the first adjusting valve 43 is used for controlling the amount of the solution in the water tray 4. Through setting up water tray 4 delivery port 41 to through setting up first governing valve 43, can control the volume of solution in the water tray 4, so that solution can soak and wait to soak a 5, when solution along with upper and lower water sword spun solution makes the solution volume in the water tray 4 increase, through controlling first governing valve 43, with the solution outflow in the regulation water tray 4.

In the embodiment of the present application, the soaking device further includes a liquid storage tank 6, and the first pipeline 42 is communicated with the liquid storage tank 6 and is used for outputting the solution in the water tray 4 to the liquid storage tank 6. Through setting up reservoir 6, can collect the solution that recycles water tray 4 outflow, improve solution utilization ratio.

In the embodiment of the present application, the soaking device further includes a first driving mechanism 7 and a second pipeline 8, and the second pipeline 8 is connected between the first driving mechanism 7 and the upper water knife 1 and the lower water knife 2, and is used for driving the solution in the liquid storage tank 6 to the upper water knife 1 and the lower water knife 2. According to the embodiment of the application, by arranging the first driving mechanism 7, the solution in the liquid storage tank 6 can be driven to the second pipeline 8 and then to the upper water knife 1 and the lower water knife 2, so that the solution in the liquid storage tank 6 can be recycled, and the degree of automation is high; the first drive mechanism 7 in the embodiment of the present application may be a pump.

Wherein, in this application embodiment, the soaking equipment still includes second governing valve 9, and second governing valve 9 sets up on second pipeline 8 for adjust the solution flow of water feeding sword 1 and lower water sword 2. Through setting up second governing valve 9, can control the solution flow of last water sword 1 and lower water sword 2 to wait to soak the actual demand of 5 different according to the printed circuit board after the sculpture, for example dry film degree on the printed circuit board after the sculpture is different, soaks the effect that softens and requires differently through soaking equipment, can soak the effect that softens in order to control through the solution flow of water sword about controlling.

Further, in another embodiment, the second regulating valve 9 includes a first sub regulating valve 91 and a second sub regulating valve 92, the first sub regulating valve 91 is used for regulating the solution flow rate for controlling the upper water jet 1, and the second sub regulating valve 92 is used for regulating the solution flow rate for controlling the lower water jet 2. In this embodiment, the second pipeline 8 includes a first sub-branch 81 and a second sub-branch 82, wherein the first sub-branch 81 is connected to the water feeding cutter 1, the first sub-regulating valve 91 is disposed on the first sub-branch 81, and the solution flow rate of the first sub-branch 81 can be controlled by the first sub-regulating valve 91; the second sub-branch 82 is connected with the lower water jet 2, the second sub-regulating valve 92 is arranged on the second sub-branch 82, and the solution flow of the second sub-branch 82 can be controlled through the second sub-regulating valve 92; through setting up first sub-governing valve 91 and second sub-governing valve 92 respectively, can carry out the independent control to the solution flow of last water sword 1 and lower water sword 2 to treat that soaking 5 soaks the different reasonable regulations of softening degree.

As a preferable scheme, the soaking device in the embodiment of the present application further includes a filter 10, the filter 10 includes a first filter 101 and a second filter 102, the first filter 101 is disposed in the sump 6, and divides the sump 6 into a first cavity 61 and a second cavity 62, the first pipeline 42 is communicated with the first cavity 61, the first driving mechanism 7 is disposed in the second cavity 62, and drives the solution filtered by the first filter 101 to the second pipeline 8; the second filter 102 is disposed on the second pipeline 8, and is used for filtering the solution flowing to the upper water knife 1 and the lower water knife 2. First filter 101 in this application embodiment can be the filter screen, can filter the solution that flows into in the reservoir 6 through setting up first filter 101 to prevent to soak and appear impurity or deposit in waiting to soak the solution behind the piece 5, avoid containing during the solution of impurity or deposit directly circulates to second pipeline 8 through first actuating mechanism 7, avoid causing equipment to damage or block up. Through setting up first filter 101, divide into two cavitys with reservoir 6, first cavity 61 and second cavity 62 promptly, solution in the water tray 4 flows to first cavity 61, and the solution of first cavity 61 flows to second cavity 62 through first filter 101, and the solution in the second cavity 62 filters through first filter 101, filters great impurity, and the solution in the second cavity 62 is more relatively, when circulating to first actuating mechanism 7 and second pipeline 8, does not influence the velocity of flow of solution. By providing the second filter 102 in the second pipe 8, the solution can be further filtered, preventing smaller impurities or precipitates from blocking the second pipe 8 or from the upper and lower water jet blades, and performing filtration on the solution at another depth level. In other embodiments, only the first filter 101 or the second filter 102 may be provided to filter the solution.

Further, the soaking device of the embodiment of the application further comprises a liquid medicine loading mechanism 11, and the liquid medicine loading mechanism 11 is used for loading liquid medicine into the liquid storage tank 6. Liquid medicine loading mechanism 11 in the embodiment of the present application includes third actuating mechanism (not shown) and medicine carrying container (not shown), wherein the medicine carrying container can be beaker or polytetrafluoroethylene box etc., do not specifically limit the medicine carrying container, third actuating mechanism sets up on second pipeline 8 between second filter 102 and first actuating mechanism 7, liquid medicine in the third actuating mechanism will carry the medicine carrying container drives to second pipeline 8 in, and filter through second filter 102, the liquid medicine circulates to last water sword 1 and lower water sword 2 through second pipeline 8, can control the dose of the solution in last water sword 1 and lower water sword 2 through setting up liquid medicine loading mechanism 11, avoid using the dose that the circulation solution caused for a long time to reduce, influence the soaking effect.

The embodiment of the application also comprises a second technical scheme, namely an etching line film removing method, wherein a printed circuit board after exposure, development and etching is conveyed by the carrying and conveying mechanism 3 of the soaking device, and the film removing liquid carried by the water tray 4 and the film removing liquid sprayed by the upper water knife 1 and the lower water knife 2 are output so that the printed circuit board is soaked by the film removing liquid; and (5) stripping the output printed circuit board.

According to the printed circuit board, the layer of film is formed on the printed circuit board, the patterned dry film is formed on the printed circuit board through the ultraviolet exposure process, the etching line is formed through etching, and the copper layer with the circuit is formed on the copper layer of the printed circuit board. The soaking equipment is started, the printed circuit board transmission mechanism after etching is conveyed to the soaking equipment, the printed circuit board transmission mechanism after etching is conveyed to the water tray 4 through the object carrying transmission mechanism 3, the film removing liquid is sprayed by the upper water knife 1 and the lower water knife 2, the film removing liquid can be a mixed solution of sodium hypochlorite and hydrochloric acid, the printed circuit board after etching can be soaked by the film removing liquid in the water tray 4, the printed circuit board after etching is soaked by the upper water knife and the lower water knife in cooperation with the water tray 4, dry films on the printed circuit board are fully contacted with the film removing liquid, chemical reaction is carried out, the dry films are integrally softened, the softened dry films are output through the object carrying transmission mechanism 3, and the softened dry films are sprayed and peeled in a film removing stage. According to the embodiment of the application, the etched printed circuit board is softened before the film is removed, so that the dry film of the etched printed circuit board is softened, the film removing effect can be improved, and the manufacturing yield of the printed circuit board is improved. According to the method, through the soaking stage before film removal, the combination of the upper water cutter, the lower water cutter and the water tray 4 is adopted for soaking, the manufacturing process of the printed circuit board is not influenced through the transmission of the carrying and conveying mechanism 3, the accumulation of the printed circuit board in the soaking stage is avoided, the soaking effect can be guaranteed, the manufacturing process of the printed circuit board can be effectively carried out in an orderly streamlined manner, the manufacturing efficiency of the printed circuit board is guaranteed, and the manufacturing yield is improved.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications and equivalents of the subject matter of the present application, which is conceived to be equivalent to the above description and the accompanying drawings, or to be directly/indirectly applied to other related arts, are intended to be included within the scope of the present application.

Claims

1. A soaking device is characterized by comprising

The device comprises an upper water knife (1), a lower water knife (2) and a carrying transmission mechanism (3), wherein the carrying transmission mechanism (3) is used for carrying a piece (5) to be soaked between the upper water knife (1) and the lower water knife (2) and conveying the piece (5) to be soaked, and the upper water knife (1) and the lower water knife (2) are used for spraying a solution to the piece (5) to be soaked;

the water tray (4) is arranged below the upper water cutter (1), the lower water cutter (2) is arranged in a cavity formed by the water tray (4), the object carrying and conveying mechanism (3) bears the to-be-soaked piece (5) in the cavity formed by the water tray (4), and the water tray (4) is used for containing solution;

a first drive mechanism (7) and a second pipeline (8);

a filter (10), the filter (10) comprising a first filter (101) and/or a second filter (102);

liquid medicine loading mechanism (11), liquid medicine loading mechanism (11) include third actuating mechanism and medicine carrying container, third actuating mechanism set up in second filter (102) with between first actuating mechanism (7) on second pipeline (8), third actuating mechanism will liquid medicine in the medicine carrying container drive extremely in second pipeline (8).

2. The soaking device according to claim 1, wherein the carrier conveying mechanism (3) comprises a bracket, an upper roller (31) and a lower roller (32), one end of the bracket is supported on the side wall of the water tray (4) and is used for supporting the upper roller (31) and the lower roller (32), the piece (5) to be soaked is placed between the upper roller (31) and the lower roller (32), and the upper roller (31) and the lower roller (32) rotate to drive the piece (5) to be soaked to be conveyed.

3. The infusion device according to claim 1, characterized in that said water tray (4) is provided with a water outlet (41), said water outlet (41) being connected to a first pipe (42), said first pipe (42) being provided with a first regulating valve (43), said first regulating valve (43) being adapted to control the amount of solution of said water tray (4).

4. An infusion device according to claim 3, comprising a reservoir (6), said first conduit (42) communicating with said reservoir (6) for delivering the solution to said reservoir (6).

5. An infusion device according to claim 4, wherein said second conduit (8) is connected between said first driving means (7) and said upper and lower water knives (1, 2) for driving the solution in said reservoir (6) to said upper and lower water knives (1, 2).

6. An infusion device according to claim 5, comprising a second regulating valve (9), said second regulating valve (9) being arranged on said second conduit (8) for regulating the solution flow rate of said upper water jet (1) and of said lower water jet (2).

7. The infusion apparatus according to claim 6, wherein said second regulating valve (9) comprises a first sub-regulating valve (91) and a second sub-regulating valve (92), said first sub-regulating valve (91) being adapted to regulate the flow of the solution controlling said upper water jet (1), said second sub-regulating valve (92) being adapted to regulate the flow of the solution controlling said lower water jet (2).

8. An infusion device according to claim 5, comprising a filter (10), said filter (10) comprising a first filter (101) and/or a second filter (102), said first filter (101) being arranged in said sump (6) dividing said sump (6) into a first chamber (61) and a second chamber (62), said first duct (42) being in communication with said first chamber (61), said first driving mechanism (7) being arranged in said second chamber (62) driving the solution filtered by said first filter (101) to said second duct (8);

the second filter (102) is arranged on the second pipeline (8) and is used for filtering the solution which flows to the upper water knife (1) and the lower water knife (2).

9. An infusion device according to claim 4, wherein said liquid drug loading mechanism (11) is also adapted to load liquid drug into said reservoir (6).

10. An etching line film removing method is characterized in that a printed circuit board after exposure, development and etching is conveyed by a carrying and conveying mechanism (3) of the soaking device according to any one of claims 1 to 9, and is output by a film removing liquid carried by a water tray (4) and a film removing liquid sprayed by an upper water knife (1) and a lower water knife (2) so that the printed circuit board is soaked by the film removing liquid; and (5) removing the film of the output printed circuit board.