CN108744610B

CN108744610B - Defoaming device based on PCB developing machine

Info

Publication number: CN108744610B
Application number: CN201810634543.7A
Authority: CN
Inventors: 余波
Original assignee: Uniwell Circuits Co ltd
Current assignee: Uniwell Circuits Co ltd
Priority date: 2018-06-20
Filing date: 2018-06-20
Publication date: 2021-02-02
Anticipated expiration: 2038-06-20
Also published as: CN108744610A

Abstract

The embodiment of the invention discloses a defoaming device based on a PCB (printed circuit board) developing machine, which comprises a foam sensor, a defoaming groove, a suction pipe, an air draft mechanism and an industrial personal computer, wherein the foam sensor is arranged on the PCB developing machine groove, and a foam sensing probe of the foam sensor extends into a corresponding position in the PCB developing machine groove; the defoaming groove is arranged at a corresponding position beside the PCB developing machine groove; the suction pipe is communicated with the PCB developing machine groove and the defoaming groove, a suction inlet of the suction pipe is positioned in the PCB developing machine groove and is higher than the liquid level of the liquid medicine in the PCB developing machine groove by a preset distance, and a suction outlet of the suction pipe is arranged in the defoaming groove; the air draft mechanism is arranged on the defoaming groove; the industrial computer is electrically connected with the foam sensor and the air draft mechanism, and the industrial computer controls the air draft mechanism to draft air and suck bubbles after detecting foams through the foam sensor. According to the embodiment of the invention, the foam is sucked into the defoaming groove by adopting the suction pipe and the air draft mechanism, so that the foam generated by the PCB developing machine is eliminated, and the effects of improving the yield of PCB semi-finished products and reducing the cost are achieved.

Description

Defoaming device based on PCB developing machine

Technical Field

The invention relates to the technical field of PCB production, in particular to a defoaming device based on a PCB developing machine.

Background

In the process of manufacturing the dry film circuit developing machine, liquid medicine of the developing machine is alkalescent, so that a plurality of foams are generated and hidden danger of production quality is caused in the operation process due to the fact that a large number of impurities exist in liquid medicine in a groove after a dry film is decomposed in the production process. The traditional method is to add chemical defoaming liquid medicine in the production process to eliminate foam.

However, the traditional chemical defoaming liquid medicine is added every shift, and the liquid medicine cost of a company is increased because the liquid medicine needs to be added regularly and quantitatively during continuous production; the traditional chemical defoaming liquid medicine contains chemical silicon, the chemical silicon and a dry film solution form a chemical reaction and are bonded together to form a viscous similar glue mark substance, and the glue mark substance is easily adhered to the surface of a PCB (printed circuit board) in the circuit developing process, so that foreign matters on the surface of the PCB cause the poor opening of a PCB circuit part; in addition, the traditional chemical defoaming liquid medicine is a chemical liquid medicine and has certain corrosivity, and clothes or bodies of operators may be splashed in the operation and addition process, so that certain potential safety production hazards exist.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present invention is to provide a defoaming device based on a PCB developing machine, so as to eliminate foam generated in the production of the PCB developing machine, and achieve the effects of improving the yield of PCB semi-finished products and reducing the cost.

In order to solve the technical problems, the embodiment of the invention provides a defoaming device based on a PCB (printed circuit board) developing machine, which comprises a foam sensor, a defoaming groove, a suction pipe, an air draft mechanism and an industrial personal computer, wherein the foam sensor is arranged on the PCB developing machine groove, and a foam sensing probe of the foam sensor extends into a corresponding position in the PCB developing machine groove; the defoaming groove is arranged at a corresponding position beside the PCB developing machine groove; the suction pipe is communicated with the PCB developing machine groove and the defoaming groove, a suction inlet of the suction pipe is positioned in the PCB developing machine groove and is higher than the liquid level of the liquid medicine in the PCB developing machine groove by a preset distance, and a suction outlet of the suction pipe is arranged in the defoaming groove; the air draft mechanism is arranged on the defoaming groove; the industrial computer is electrically connected with the foam sensor and the air draft mechanism, and the industrial computer controls the air draft mechanism to draft air and suck bubbles after detecting foams through the foam sensor.

Further, still include broken bubble cartridge filter of one-level and broken bubble box of second grade, the middle part of suction tube is located to broken bubble cartridge filter of one-level, and broken bubble box of second grade is located the delivery port department of suction tube.

Further, the broken bubble cartridge filter of one-level is detachable construction, and is equipped with the oil absorption cotton in the broken bubble cartridge filter of one-level.

Further, the second-stage bubble breaking box is of a detachable structure, and 2 layers of steel meshes and 2 layers of oil absorption cotton are sequentially arranged in the second-stage bubble breaking box.

Further, still include the mechanism of returning the medicine, the mechanism of returning the medicine includes: an electric pump connected with the defoaming tank; the medicine return pipe is connected with the electric pump and the PCB developing machine groove; the electric pump is electrically connected with the industrial personal computer, and a medicine return control valve is arranged on the medicine return pipe.

Further, still including locating the liquid level inductor on the defoaming groove, the liquid level inductive probe of liquid level inductor stretches into the corresponding position in the defoaming groove, the liquid level inductor is connected with the industrial computer electricity.

Further, the air extracting mechanism comprises: the exhaust fan is arranged on the defoaming groove and is electrically connected with the industrial personal computer; and an air outlet pipe connected with the exhaust fan; and the air outlet pipe is also provided with a water-gas separation filter.

Further, the defoaming device further comprises a liquid discharge pipe communicated with the bottom of the defoaming groove, and a liquid discharge control valve is further arranged on the liquid discharge pipe.

Furthermore, the suction inlet of the suction pipe is additionally provided with a telescopic loose joint and a filter screen.

Further, the range of the preset distance is 2 cm-3 cm.

The embodiment of the invention provides a defoaming device based on a PCB (printed circuit board) developing machine, which comprises a foam sensor, a defoaming groove, a suction pipe, an air draft mechanism and an industrial personal computer, wherein foam generated in the production of the PCB developing machine is eliminated by sucking the foam into the defoaming groove by using the suction pipe and the air draft mechanism, and meanwhile, the effects of improving the yield of semi-finished PCB products and reducing the cost are achieved.

Drawings

Fig. 1 is a schematic structural diagram of a defoaming device based on a PCB developing machine according to an embodiment of the present invention.

Fig. 2 is a partial structural schematic diagram of a defoaming device based on a PCB developing machine according to an embodiment of the invention.

Description of the reference numerals

PCB developer tank 1

Foam sensor 2

Foam sensing probe 3

Defoaming tank 4

Suction pipe 5

First-stage bubble breaking filter cylinder 6

Second-stage bubble breaking box 7

Exhaust fan 8

Air outlet pipe 9

Water-gas separation filter 10

Electric pump 11

The return medicine tube 12

Medicine returning control valve 13

Level sensor 14

Liquid level sensing probe 15

Drain pipe 16

Liquid discharge control valve 17

Telescopic loose joint 18

A filter screen 19.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict, and the present invention is further described in detail with reference to the drawings and specific embodiments.

If directional indications (such as up, down, left, right, front, and rear … …) are provided in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the movement, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

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

Referring to fig. 1 to 2, a defoaming device based on a PCB developing machine according to an embodiment of the present invention mainly includes a foam sensor 2, a defoaming tank 4, a suction pipe 5, an air draft mechanism, and an industrial personal computer.

The foam sensor 2 is arranged on the PCB developer tank 1, and the foam sensing probe 3 of the foam sensor 2 extends into the corresponding position in the PCB developer tank 1.

The defoaming groove 4 is arranged at the corresponding position beside the PCB developing machine groove 1. Inhale 5 intercommunication PCB developing machine grooves 1 and defoaming groove 4 of pipe, the sunction inlet of inhaling 5 pipe is located PCB developing machine grooves 1, and the sunction inlet exceeds PCB developing machine grooves 1 interior liquid medicine liquid level and predetermines the distance, inhales 5 the mouth of inhaling and locates in defoaming groove 4. Preferably, a suction pipe 5 is additionally arranged on a bottom opening pipe orifice of the PCB developer, and the distance of a suction inlet of the suction pipe 5 is higher than the preset distance of a standard liquid level of liquid medicine.

The air draft mechanism is arranged on the defoaming groove 4. The industrial computer is connected with foam inductor 2, updraft ventilator mechanism electricity, and the industrial computer controls updraft ventilator mechanism convulsions suction bubble after detecting the foam through foam inductor 2, and the foam is sucked in defoaming groove 4 along suction tube 5. The embodiment of the invention is designed for an integrated fool machine, and only needs to click on or off on a man-machine operation interface of an industrial personal computer, so that the fool machine is simple and easy to understand, misoperation cannot occur, and the condition that life and property loss is caused by industrial injury in the production process of workers is effectively avoided.

As an implementation manner, the defoaming device based on the PCB developing machine further includes a first-stage foam breaking filter cartridge 6 and a second-stage foam breaking cartridge 7, wherein the first-stage foam breaking filter cartridge 6 is disposed in the middle of the suction pipe 5, and the second-stage foam breaking cartridge 7 is disposed at the water outlet of the suction pipe 5.

As an embodiment, the first-stage foam breaking filter cylinder 6 is a detachable structure, and the oil absorption cotton is arranged in the first-stage foam breaking filter cylinder 6.

As an implementation mode, the second-stage bubble breaking box 7 is of a detachable structure, and 2 layers of steel nets and 2 layers of oil absorption cotton are sequentially arranged in the second-stage bubble breaking box 7. A first-stage foam breaking filter cylinder 6 is additionally arranged in the middle of a suction pipe 5, oil absorption cotton is placed in the first-stage foam breaking filter cylinder 6 for foam breaking and filtering, and the filter cylinder is detachable and can be detached to clean the interior and replace the oil absorption cotton; install the broken bubble box 7 of second grade additional in 5 exports of suction tube and 4 junctions of defoaming groove, install 2 layers of steel mesh and 2 layers of oil absorption cotton in the broken bubble box 7 of second grade and do broken bubble effect, also be detachable, removable washing steel mesh and change the oil absorption cotton. After the foam breaking is finished, the foam is decomposed into original liquid and flows into the foam eliminating tank 4 for temporary storage. The embodiment of the invention adopts pure physical recycling to utilize the oil absorption cotton and the steel mesh in the defoaming process without generating any impurity, and can also play a role in filtering impurities in the liquid medicine.

As an embodiment, the defoaming device based on the PCB developing machine further comprises a medicine returning mechanism, and the medicine returning mechanism comprises: an electric pump 11 connected to the defoaming tank 4; a medicine return pipe 12 connected with the electric pump 11 and the PCB developing machine tank 1; the electric pump 11 is electrically connected with an industrial personal computer, and a drug return control valve 13 is arranged on the drug return pipe 12. The flow can be controlled by the drug return control valve 13 in the drug pumping liquid reflux process. The embodiment of the invention adds an auxiliary function for one-time investment, recycles the liquid medicine and can play a good role in saving cost.

As an implementation mode, the defoaming device based on the PCB developing machine further comprises a liquid level sensor 14 arranged on the defoaming groove 4, a liquid level sensing probe 15 of the liquid level sensor 14 extends into the defoaming groove 4 to correspond to the position, and the liquid level sensor 14 is electrically connected with an industrial personal computer. The liquid level sensor 14 and the suction type electric pump 11 are additionally arranged in the defoaming tank 4, when the industrial personal computer senses that liquid in the defoaming tank 4 reaches a preset liquid level through the liquid level sensing probe 15 of the liquid level sensor 14, the industrial personal computer starts to control the electric pump 11 to operate, liquid medicine temporarily stored in the defoaming tank 4 is pumped out, and the liquid medicine is pumped back into the PCB developing machine tank 1 through the connected medicine return pipe 12 for recycling.

As an embodiment, the air extracting mechanism includes: an exhaust fan 8 which is arranged on the defoaming tank 4 and is electrically connected with the industrial personal computer; and an air outlet pipe 9 connected with the exhaust fan 8; and a water-gas separation filter 10 is also arranged on the air outlet pipe 9.

As an implementation mode, the defoaming device based on the PCB developing machine further comprises a liquid discharge pipe 16 communicated with the bottom of the defoaming groove 4, and a liquid discharge control valve 17 is further arranged on the liquid discharge pipe 16. When the embodiment of the invention needs maintenance, the liquid discharge control valve 17 can be opened, and the liquid medicine in the defoaming tank 4 is discharged along the liquid discharge pipe 16, so that the maintenance or the maintenance is convenient.

In one embodiment, the suction port of the suction pipe 5 is further provided with a telescopic joint 18 and a filter screen 19. The suction inlet is provided with a filter screen 19 to prevent sundries from being sucked, the suction inlet of the suction pipe 5 is additionally provided with a waterproof telescopic loose joint 18, and the height of the telescopic loose joint 18 is preferably provided with a vertical adjusting space of 10cm, so that the situation of different liquid level heights can be conveniently coped with.

In one embodiment, the predetermined distance is 2cm to 3cm, so that the suction tube 5 can effectively suck the generated foam, and the suction tube 5 does not suck the liquid medicine.

The embodiment of the invention can reduce viscous substances generated in the production process of the chemical defoaming liquid medicine and eliminate foam in the developing machine tank; not only can reduce the defects of PCB semi-finished products, but also can save the cost. The embodiment of the invention is suitable for all horizontal production lines, and the foam generated in the production processes of the embodiment of the invention can play a role of defoaming, and is preferably applied to a dry film developing machine in the PCB industry.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A defoaming device based on a PCB (printed circuit board) developing machine is characterized by comprising a foam sensor, a defoaming groove, a suction pipe, an air draft mechanism and an industrial personal computer, wherein the foam sensor is arranged on the PCB developing machine groove, and a foam sensing probe of the foam sensor extends into a corresponding position in the PCB developing machine groove; the defoaming groove is arranged at a corresponding position beside the PCB developing machine groove; the suction pipe is communicated with the PCB developing machine groove and the defoaming groove, a suction inlet of the suction pipe is positioned in the PCB developing machine groove and is higher than the liquid level of the liquid medicine in the PCB developing machine groove by a preset distance, and a suction outlet of the suction pipe is arranged in the defoaming groove; the air draft mechanism is arranged on the defoaming groove; the industrial personal computer is electrically connected with the foam sensor and the air draft mechanism, and controls the air draft mechanism to draft air and suck bubbles after the industrial personal computer detects the foam through the foam sensor;

defoaming device based on PCB developing machine still includes the broken bubble cartridge filter of one-level and the broken bubble box of second grade, the broken bubble cartridge filter of one-level locates the middle part of inhaling the pipe, and the broken bubble box of second grade locates the delivery port department that inhales the pipe.

2. The defoaming apparatus based on PCB developing machine of claim 1 wherein the first stage foam breaking filter cylinder is a detachable structure and the oil absorption cotton is arranged in the first stage foam breaking filter cylinder.

3. The defoaming device based on the PCB developing machine as claimed in claim 1, wherein the secondary bubble breaking box is a detachable structure, and 2 layers of steel mesh and 2 layers of oil absorption cotton are sequentially arranged in the secondary bubble breaking box.

4. The defoaming apparatus based on a PCB developing machine according to claim 1, further comprising a drug returning mechanism, wherein the drug returning mechanism comprises: an electric pump connected with the defoaming tank; the medicine return pipe is connected with the electric pump and the PCB developing machine groove; the electric pump is electrically connected with the industrial personal computer, and a medicine return control valve is arranged on the medicine return pipe.

5. The defoaming apparatus based on PCB developer according to claim 4, further comprising a liquid level sensor disposed on the defoaming tank, wherein a liquid level sensing probe of the liquid level sensor extends into a corresponding position in the defoaming tank, and the liquid level sensor is electrically connected with the industrial personal computer.

6. The defoaming apparatus for PCB developing machines as claimed in claim 1, wherein the air draft mechanism comprises: the exhaust fan is arranged on the defoaming groove and is electrically connected with the industrial personal computer; and an air outlet pipe connected with the exhaust fan; and the air outlet pipe is also provided with a water-gas separation filter.

7. The defoaming apparatus for PCB developing machines as claimed in claim 1, further comprising a drain pipe connected to the bottom of the defoaming tank, wherein the drain pipe is further provided with a drain control valve.

8. The defoaming apparatus for PCB developing machines as claimed in claim 1, wherein the suction inlet of the suction pipe is further installed with a telescopic loose joint and a filter screen.

9. The defoaming apparatus based on PCB developing machine of claim 1 wherein the predetermined distance is in the range of 2cm to 3 cm.