KR20040072137A - machine for PCB cleaning - Google Patents

Abstract

PURPOSE: An automatic PCB cleaning machine is provided to achieve improved quality of productivity of PCB by permitting a base panel cleaning process in a rapid and uniform manner. CONSTITUTION: An automatic PCB cleaning machine comprises a dust removing unit including an injection unit for injecting the air supplied from an air compressor and a cover(20) for covering the cleaning zone of the injection unit; a transfer unit for transferring a plurality of base panels which have passed the dust removing unit; and a pressure control unit for maintaining the pressure of the air supplied from the air compressor constant for a predetermined time period. The injection unit includes an air pipe arranged in the cover and connected to the air compressor; and a plurality of nozzles arranged at both sides of the air pipe. The transfer unit includes rollers(30) for transferring the base panels; and a driving motor for driving the rollers. The pressure control unit includes an air tank(40) connected to the air compressor; and a pressure increasing valve(42) for increasing the pressure of the air supplied from the air tank to the injection unit.

Description

Circuit board automatic cleaning device {machine for PCB cleaning}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit board cleaning device, and more particularly, to an automatic circuit board cleaning device capable of efficiently removing burrs and dust generated during hole processing.

In general, the process of manufacturing a circuit board includes a hole processing process for making a plurality of holes to fix various chips to the base panel, a cleaning process for removing foreign substances on the surface of the base panel, and a photosensitive film based on the circuit to make a circuit. It includes a coating process for coating the surface of the panel, an exposure process for forming a circuit on the surface of the base panel by taking a circuit picture and exposure.

Hole processing is performed by drilling method. According to the drilling method, burrs are formed around the hole by friction between the drill and the base panel, and fine dust is generated and adheres to the surface of the base panel. This is to improve the operational stability of the circuit board by removing foreign substances.

Here, the cleaning process is made by a so-called manual method in which the operator removes the surface of the high pressure aero base panel ejected from the air gun by using an air gun connected to the air compressor. Due to the nature of the manual method, the burrs and dust are not likely to be evenly removed, so that the quality of the produced circuit boards is reduced, and the cleaning work speed is changed according to the skill of the operator, thereby causing a problem that the productivity of the circuit boards is reduced.

In addition, there is a problem that the workplace is contaminated by dispersed foreign matters may damage the health of the worker.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. It is an object of the present invention to provide a circuit board automatic cleaning device which helps improve the quality and productivity of the circuit board and improve the working environment by allowing the base panel cleaning operation to be performed quickly and evenly. It is done.

1 is a perspective view showing the structure of a circuit board automatic cleaning device according to an embodiment of the present invention.

Figure 2 is a perspective view showing the injection unit of the automatic circuit board cleaning apparatus according to the present embodiment.

3A, 3B, and 3C are exemplary views sequentially showing operating states of the circuit board automatic cleaning apparatus according to the present embodiment.

<Explanation of symbols for the main parts of the drawings>

10: injection unit 12: air pipe

14: nozzle 14a: nozzle

20: cover 30: roller

40: air tank 42: booster valve

50: dust collecting frame 52: vacuum suction

60: loading box 70: loader

P: base panel

The circuit board automatic cleaning device provided to achieve the above object comprises a dust removal means comprising an injection unit for injecting air pressurized from the air compressor, and a cover surrounding the cleaning zone of the injection unit; Transfer means for continuously transporting a plurality of base panels sequentially through the dust removal means; It comprises a pressure adjusting means for maintaining the pressure of the air supplied from the air compressor for a certain time.

Here, the injection unit is provided in the cover and consists of an air pipe connected to the air compressor, and a plurality of nozzles cross-mounted on both sides of the air pipe.

In addition, the conveying means is formed of a conveyor type consisting of a roller for continuously moving a plurality of base panels and a drive motor for driving the plurality of base panels are rotated by being arranged at a predetermined interval.

The pressure adjusting means may include a pulsation preventing air tank connected to an air compressor, and a booster valve for increasing the pressure of air supplied to the injection unit via the air tank.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3C.

The circuit board automatic cleaning device according to an embodiment of the present invention is a dust removal means for removing the burr and dust adhered to the base panel by an air injection method, and sequentially passing a plurality of base panels to pass through the dust removal means. Conveying means and pressure adjusting means for maintaining the pressure of the air supplied from the air compressor for a certain time.

As shown in FIG. 1, the dust removing means includes an injection unit 10 (see FIGS. 2 and 3A) for injecting pressurized air from an air compressor (not shown), and air injected from the injection unit 10. It consists of a cover 20 surrounding the working area of the cleaning zone (cleaning zone), the injection unit 10 is provided in the cover 20 and the air pipe 12 is connected to the air compressor (not shown) and It consists of a plurality of nozzles (14) cross-mounted on both sides of the air pipe (12).

Here, as shown in FIG. 2, each nozzle 14 of the injection unit 10 is formed in a shape having a plurality of injection holes 14a arranged in a row, and the opposite side so as not to generate a blind spot in the cleaning zone. It is mounted in the form of overlapping with the nozzle (14).

In addition, the cover 20 is formed in a box shape that blocks a predetermined volume of space from the outside around the air pipe 12.

The conveying means is made of a so-called conveyor type composed of a plurality of rollers 30 arranged at regular intervals, and a drive motor (not shown) for driving the rollers 30.

In addition, the pressure adjusting means is composed of a pulsation preventing air tank 40 connected to the air compressor, and the booster valve 42 for increasing the pressure of the air supplied to the injection unit 10 via the air tank 40. (See Fig. 1)

In addition, the circuit board automatic cleaning device according to the present embodiment further includes a dust collecting device for sucking dust and the like dispersed by the action of the spraying unit 10, wherein the dust collecting device is disposed below the spraying unit 10. It consists of a funnel-type dust collecting frame 50, and a vacuum suction unit 52 for vacuum suctioning dust through the dust collecting frame 50.

In the cleaning process by the automatic circuit board cleaning apparatus according to the embodiment of the present invention configured as described above, a loading step in which the base panel (P) is loaded in the transport means and transported to the cleaning zone, transferred to the cleaning zone. It consists of a cleaning step in which the base panel P is cleaned by pressurized air, and an unloading step in which the cleaned base panel P is transferred to the loading box 60 (see FIG. 1). Is as follows.

First, in the loading step, as shown in FIG. 3A, the base panel P is loaded at a predetermined interval on the roller 30 by a separate loader 70 or the like, and is loaded on each roller 30 to be rotated. As a result, a plurality of base panels P are continuously and quickly transferred to the cleaning zone in the cover 20.

In the cleaning step, as shown in FIG. 3B, the transferred base panel P is introduced into the cleaning zone in the cover 20 and the high pressure air supplied from the air compressor is supplied from the nozzle 14 of the injection unit 10 to the base panel. By spraying to the (P) side, the so-called cleaning action to remove the burrs and dust on the surface of the base panel (P) is made.

This cleaning action lasts until the base panel P completely passes through the cleaning zone in the cover. In this case, since the nozzles 14 disposed in opposite directions overlap each other with a predetermined portion, the pressurized air Evenly contacting the entire surface of P) and cleaning of the base panel (P) is effectively performed.

In addition, the dust dispersed by the pressurized air does not diffuse to the outside due to the cover 20 surrounding the cleaning zone, is collected by the dust collecting frame 50 constituting the dust collecting apparatus, and is then sucked and stored in the vacuum suction side.

Lastly, in the unloading step, as shown in FIG. 3C, the cleaned base panel P is slidably transported and loaded in a separate drop box 60 in a free drop method, and the entire cleaning process is completed.

Meanwhile, in the present embodiment, the air supplied from the air compressor passes through the air tank 40 and the booster valve 42 before reaching the injection unit 10. According to the air tank 40, the pulsation phenomenon is generated. Irregular injection operation is prevented, and according to the booster valve 42, a pressure drop phenomenon in which the pressure of the air delivered from the air compressor is distributed to each nozzle 14 of the injection unit 10 is prevented, thereby preventing the nozzle 14. It is possible to maintain a constant pressure of the air injected from the for a certain time.

As described above, according to the automatic circuit board cleaning apparatus according to the present invention, since the cleaning operation of the base panel is uniformly performed by the injection unit, and the base panel is continuously and quickly transferred by the transfer means, the conventional manual method There is an advantage that the quality and productivity of the circuit board is significantly improved than in.

In addition, since the number of workers required for manual work can be reduced, the production cost of the product is reduced, and foreign matter is collected and treated to improve the working environment.

Claims (4)

Dust removal means comprising an injection unit for injecting pressurized air from an air compressor, and a cover surrounding a cleaning zone of the injection unit; Transfer means for continuously transporting a plurality of base panels sequentially through the dust removal means; Pressure adjusting means for maintaining the pressure of the air supplied from the air compressor for a certain time Circuit board automatic cleaning device comprising a. According to claim 1, wherein the injection unit And an air pipe provided in the cover and connected to an air compressor, and a plurality of nozzles cross-mounted on both sides of the air pipe. The method of claim 1, wherein the transfer means The circuit board automatic cleaning device, characterized in that consisting of a conveyor type consisting of a roller and a drive motor for driving the plurality of base panels continuously moving by being rotated at a predetermined interval. The method of claim 1, wherein the pressure adjusting means A circuit board automatic cleaning device comprising a pulsation preventing air tank connected to an air compressor, and a booster valve for increasing the pressure of air supplied to the injection unit through the air tank.