CN2602402Y

CN2602402Y - Eliminating bubble device for the printed circuit board developing machine

Info

Publication number: CN2602402Y
Application number: CN 03237187
Authority: CN
Inventors: 吕学能; 卢信村; 陈衍宾
Original assignee: Ampoc Far East Co Ltd
Current assignee: Ampoc Far East Co Ltd
Priority date: 2003-02-10
Filing date: 2003-02-10
Publication date: 2004-02-04
Anticipated expiration: 2013-02-10

Abstract

The utility model discloses a bubble removing device for the developing machine of a printing circuit wafer. In the printing circuit wafer developing procedure, the bubble incurred by the sodium carbonate solution can be put in the utility model, an air suction and a minutia screener are used for rapidly separating the sodium carbonate solution of the bubble from the gas, which can recycle the sodium carbonate solution for applying. The utility model can save the application cost and achieve the environmental protection effect.

Description

Printed circuit board (PCB) developing machine defoaming device

Technical field

The utility model relates to a kind of printed circuit board (PCB) developing machine defoaming device, utilization is bled and the detailed catalogue filter screen separates foam liquid and the gas that produces because of sodium carbonate liquor in the printed circuit board (PCB) developing process fast, and reclaim sodium carbonate liquid and recycle, can save use cost and produce environmental benefit.

Background technology

Printed circuit board (PCB) mainly utilizes to take a picture to handle to make and forms circuitry lines on the circuit board, again this circuit board is sent to the interior sodium carbonate liquor that immerses of developing machine and carries out development treatment, then can make by the processing of sodium carbonate liquor and develop circuit on the circuit board, and then circuit board is taken out and carry out the stripping processing, but owing to when development and stripping, be easy to generate a large amount of foams, and because of foam be attached to will make on the circuit board develop and the stripping treatment effect bad, the defoamer that industry most likely re-uses siliceous Li Kang (SILICON) drenches on liquid medicine to defoam, but the sharp health solution of this silicon is once mix with sodium carbonate and NaOH, then can have influence on the effect of stripping again, make grow and bad the process time of circuit board, especially after constantly using the sharp health solution of silicon, the ratio that contains silicon Li Kang in this round-robin carbon sodium and the sodium hydroxide solution increases gradually, making that the circuit board quality of backward producing is bad, is that the dealer is worried.

In order to overcome the above problems, the applicant once applied for No. 82206918 novel patent in Taiwan, as shown in Figure 7, mainly be that a side is provided with collection tube 101 in developing machine 100, be provided with conduit 102 at collection tube 100 rears, this conduit 102 joins with the circulation pipe 104 of inhaling bubble machine 103, sucks by the circulation generation suction of circulation pipe 104 and with the foams in the developing device 100, and steeps mouthful 105 discharges by the row who inhales bubble machine 103.

Though this device can be removed foam and need not use defoamer, still, inhale the bubble machine and just foam is discharged, foam is not advanced a processing, foam contains sodium carbonate liquor, aspect reducing cost and improving environmental protection, still has the space of improvement.

The utility model content

In order to overcome the deficiency of existing printed circuit board (PCB) developing machine defoaming device, fundamental purpose of the present utility model is to provide a kind of printed circuit board (PCB) developing machine defoaming device, utilization is bled and the detailed catalogue filter screen separates foam liquid and the gas that produces because of sodium carbonate liquor in the printed circuit board (PCB) developing process fast, and recovery sodium carbonate liquid recycles.

In order to achieve the above object, the utility model provides a kind of printed circuit board (PCB) developing machine defoaming device, is located in the developing machine, and it comprises: a foam tail pipe; An air pressure chamber, an end wall surface is provided with the foam suction inlet, and one is tight smooth in the detailed catalogue filter screen of foam suction inlet wall, and spacing is left in detailed catalogue filter shading edge and foam suction inlet wall bottom; An air-breathing outlet is located on the wall of relative air pressure chamber foam suction inlet, and on upper spacer and the formed space of lid wall; A liquid flowing outlet is located at the air pressure chamber bottom; An air intake duct, an end are communicated in the air-breathing outlet of air pressure chamber, and the other end is connected with lift pump; One communicating pipe, one of them port is communicated in the liquid flowing outlet of air pressure chamber bottom; A liquid collection chamber, bottom surface are provided with a flow of liquid inlet and are communicated with the another port of communicating pipe; A liquid is extracted mouth out, is located at liquid collection chamber side wall surface below; A Liquid extracting pipe, an end are extracted mouth out with the liquid of liquid collection chamber and are connected, and the other end is connected to a motor.

Printed circuit board (PCB) developing machine defoaming device of the present utility model, utilize a lift pump, air pressure chamber, the detailed catalogue filter screen, members such as liquids recovery chamber and motor, with lift pump at the indoor generation negative sense of air pressure suction, the foam suck air pressure that produces in the developing machine is indoor, place air pressure chamber foam suction inlet to be close to than large tracts of land detailed catalogue filter screen, when making foam through the detailed catalogue filter screen, because of fluid molecule can't pass through greater than the filter screen mesh, can flow downward along the wall of filter screen and air pressure chamber, be connected to the liquids recovery chamber through the communicating pipe of below, utilize the motor liquids recovery that liquids recovery is indoor to continue to use again for developing machine; And air can see through the filter screen mesh directly to enter air pressure indoor, enters the indoor air of air pressure will get rid of along with lift pump; Not only user cost can be saved, more environmental issue can be taken into account.

Since the special design of this device, so have following advantage in the use:

1. do not need the existing defoamer that uses, the foam that developing machine 7 produces can be absorbed fast, avoid the bulk deposition of foam and influence the development quality of printed circuit board (PCB), thereby save the expense of defoamer.

2. can the liquid after separating can be collected the back and reuse fast with the gas and the fluid separation applications of foam, can not influence environmental issue, and save suitable use cost.

3. need not change the structural design of existing developing machine, easy for installation.

Description of drawings

Fig. 1 is an outside drawing of the present utility model.

Fig. 2 is the synoptic diagram of the utility model when being connected with developing machine.

Fig. 3 is an exploded view of the present utility model.

Fig. 4 is a partial section view of the present utility model.

Fig. 5 is the longitudinal profile synoptic diagram of air pressure chamber of the present utility model.

Fig. 6 is the longitudinal profile synoptic diagram of the utility model liquid collection chamber.

Fig. 7 is existing this developing machine of P.e.c. foam adsorption apparatus synoptic diagram.

Embodiment

Following conjunction with figs. describes the structure and the characteristics of printed circuit board (PCB) developing machine defoaming device of the present utility model in detail.

Printed circuit board (PCB) developing machine defoaming device of the present utility model, as Fig. 1, shown in Figure 3, it comprises:

A foam tail pipe 1;

An air pressure chamber 2, one end wall surface is provided with foam suction inlet 21, foam suction inlet 21 places also are provided with a detailed catalogue filter screen 22, this detailed catalogue filter screen 22 has suitable thickness and area, and closely smooth in the wall of foam suction inlet 21, just suitable spacing is left in the wall bottom of detailed catalogue filter screen 22 root edges and foam suction inlet 21;

Several gear-stopping bars 23 are fixedly arranged on detailed catalogue filter screen 22 relative foam suction inlet 21 ends, and firmly detailed catalogue filter screen 22 is smooth in the wall of air pressure chamber 2 foam suction inlets 21;

A lower clapboard 24, be located at the upper end of air pressure chamber 2 inner set detailed catalogue filter screens 22, be formed with many bleeder vents that run through 241 on it, lower clapboard 24 is supported by the stop block 242 that is formed on air pressure chamber 2 inwalls, be equipped with the mesh filter screen 25 big on the lower clapboard 24 than detailed catalogue filter screen 22, also be provided with upper spacer 26 on the filter screen 25, be formed with many on it and the lower clapboard 24 bleeder vents 241 corresponding bleeder vents that run through 261;

One is located on the flange 27 that approaches air pressure chamber 2 tops, and flange 27 can support lid 28, and lid 28 is provided with handle 281; 26 of lid 28 and upper spacers have suitable distance, form suitable space;

An air-breathing outlet 29 is located on the wall of relative air pressure chamber 2 foam suction inlets 21, and on upper spacer 26 and lid 28 formed space walls;

A liquid flowing outlet 211 has suitable aperture, is located at air pressure chamber 2 bottoms;

A U-shaped communicating pipe 3, one of them port 31 is communicated in the liquid flowing outlet 211 of air pressure chamber 2 bottoms;

Air intake duct 4, one ends are communicated in the air-breathing outlet 29 of air pressure chamber 2, and the other end is connected (as shown in Figure 2) with lift pump 8;

A liquid collection chamber 5, bottom surface are provided with a flow of liquid inlet 51, are communicated with the another port 32 of communicating pipe 3;

A liquid is extracted mouth 52 out, is located at suitably height of liquid collection chamber 5 one side wall surfaces below;

One is located on the flange 53 that approaches liquid collection chamber 5 nearly tops, and flange 53 can support lid 54, and lid 54 is provided with handle 541;

Liquid extracting pipe 6, one ends are extracted mouth 52 out with liquid and are connected, and the other end is connected to a motor 9 (as shown in Figure 2).

During use, shown in Fig. 2,4,5,6, this device does not have other end points to circulate mutually with the air of outside except 1 mouthful of the foam tail pipe that is connected with developing machine 7 ends; When lift pump 8 produces suction, to produce negative sense suction, air in liquid collection chamber 5 and the air pressure chamber 2 is outwards detached, make and form very big suction space in the air pressure chamber 2,1 mouthful of the foam tail pipe that is connected with developing machine 7 ends is because of the suction in the air pressure chamber 2, arrive suck the foam that is suspended on the developing machine 7 fast in foam suction inlet 21, because of the mesh on the detailed catalogue filter screen 22 very little, fluid molecule in the foam is difficult for passing through mesh, gas in the foam can enter in the air pressure chamber 2 by mesh, and can't will be attached to by the liquid of mesh between detailed catalogue filter screen 22 and air pressure chamber 2 foam suction inlets 21 walls, treat to flow downward after liquid is combined into water droplet, form current and flow in the air pressure chamber 2;

At this moment, flow into the gas of air pressure chamber 2, the suction that produces along with lift pump 8 discharges via bleeder vent 241, filter screen 25, the bleeder vent 261 of upper spacer 26, the suction hole 29 of lower clapboard 24, and continues to keep the suction of air pressure chamber 2 inside; Lower clapboard 24, filter screen 25, upper spacer 26 can filter moisture content once more with the air that passes through, and with protection lift pump 8, avoid sucking more moisture and influence serviceable life.

Shown in Fig. 2,4,6, flow into the liquid of air pressure chamber 2, to enter the mouth in the 51 influent collecting chambers 5 by liquid flowing outlet 211, communicating pipe 3, flow of liquid, utilizing communicating pipe 3 because of liquid collection chamber 5 and air pressure chamber 2 is connected, so the liquid level of its accumulation will be quite consistent, the liquid level for the treatment of liquid collection chamber 5 reaches liquid when extracting out mouthful 52 or more highly, motor 9 can be extracted the liquid in the liquid collection chamber 5 out, continues to use for developing machine 7.

In sum, because the utility model there is no similar utility model or published in like product, be a kind of have innovation and practical again utility model, special proposition patented claim.

Claims

1. a printed circuit board (PCB) developing machine defoaming device is located in the developing machine, it is characterized in that it comprises:

A foam tail pipe;

An air pressure chamber, an end wall surface is provided with the foam suction inlet, and one is tight smooth in the detailed catalogue filter screen of foam suction inlet wall, and spacing is left in detailed catalogue filter shading edge and foam suction inlet wall bottom; An air-breathing outlet is located on the wall of relative air pressure chamber foam suction inlet, and on upper spacer and the formed space of lid wall; A liquid flowing outlet is located at the air pressure chamber bottom;

An air intake duct, an end are communicated in the air-breathing outlet of air pressure chamber, and the other end is connected with lift pump; One communicating pipe, one of them port is communicated in the liquid flowing outlet of air pressure chamber bottom;

A liquid collection chamber, bottom surface are provided with a flow of liquid inlet and are communicated with the another port of communicating pipe;

A liquid is extracted mouth out, is located at liquid collection chamber side wall surface below;

A Liquid extracting pipe, an end are extracted mouth out with the liquid of liquid collection chamber and are connected, and the other end is connected to a motor.

2. printed circuit board (PCB) developing machine defoaming device as claimed in claim 1 is characterized in that air pressure chamber detailed catalogue filter screen is provided with several gear-stopping bars, is installed in the relative foam suction inlet of detailed catalogue filter screen end.

3. printed circuit board (PCB) developing machine defoaming device as claimed in claim 2 is characterized in that, air pressure chamber detailed catalogue filter screen upper end is provided with the upper and lower dividing plate with bleeder vent, is provided with filter screen between two dividing plates.

4. as claim 1,2 or 3 described printed circuit board (PCB) developing machine defoaming devices, it is characterized in that, can be provided with a lid on the air pressure chamber top.

5. printed circuit board (PCB) developing machine defoaming device as claimed in claim 4 is characterized in that, can be provided with lid on the liquid collection chamber top.

6. printed circuit board (PCB) developing machine defoaming device as claimed in claim 5 is characterized in that having distance between lid of establishing on the air pressure chamber and upper spacer, is installed with a space.