JPH06106148A - Air flasher - Google Patents

Abstract

PURPOSE:To uniformly remove the moisture of an article to be washed without leaving the component such as an electrolyte contained in the moisture by opening and closing the respective solenoid valves communicating with a pressure container at a predetermined time interval by a controller and intermittently ejecting air from respective nozzles. CONSTITUTION:The solenoid valves 3, 3 communicating with a pressure container are arranged to the side surface of the pressure container 1 at predetermined intervals in a vertical direction and flexible pipes 6 having nozzles 5 provided to the leading ends thereof are fixed to the respective solenoid valves 3 through individual pressure reducing valves 4 in a horizontal direction and the solenoid valves 3 are opened and closed at a predeterined time interval by a controller 7 to intermittently eject air from the nozzles 5. When air is intermittently ejected, the compressed air in the pressure container 1 is ejected at a stroke at the beginning of the ejection of air under pressure higher than that of air ejected at the time of usual opening. Therefore, high pressure air is ejected at each time when the solenoid valves 3 are opened and, moreover, water falling from above can be blown off to the periphery many times to be diffused.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air flasher used for wiping off water adhering to a processed product such as a metal processed product or a processed product such as a printed circuit board, before washing it with water and then putting it in a drying oven. It is a thing.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
Metal processed products are processed into the desired shape, then washed with water to wash fine dust such as metal dust adhered during processing, then remove the water adhered during this cleaning and put it in a drying oven, then process Finishing treatment such as spray painting or metal plating is performed according to the purpose of finishing the product. As a device conventionally used in such a water removal process after cleaning, there is a device in which air supplied from a compression pump is blown by an air gun. However,
According to such a conventional spraying device, not only the operator is forced to perform a troublesome work manually, but also a disadvantage that a peeling portion is generated in the finish of spray coating after cleaning and a large amount of inferior products are produced. there were.

The reason for this is that, as shown in FIG. 4 (a), when the water adhering to the surface of the article to be cleaned 10 is blown off to the periphery around the position 21 hit by the air ejected from the nozzle ( 20a indicates diffusing water), and components in the water are accumulated and condensed in the corners 10b of the protrusion 10a of the article to be cleaned 10. When the blowing of air is finished, the upper moisture flows down along the surface of the article to be cleaned 10 as shown in FIG. 4 (b) (20b indicates the moisture that flows down).

However, the water condensed and accumulated in the corner portion 10b of the protrusion 10a as described above contains an electrolyte or the like which hinders the adhesion of spray coating or metal plating, and the condensed matter of the electrolyte is to be washed. When it adheres to the surface of the product 10 in a drooping state, it remains as a solidified product of the electrolyte in the subsequent drying step. Then, when the article 10 to be cleaned is subjected to a surface coating treatment such as spray coating or metal plating treatment in the next step, the solidified substance of the electrolyte remaining on the surface easily peels off the paint or metal plating. In particular, as shown in FIG.
When a plurality of vertically suspended parts are sprayed with air, when the condensate of the electrolyte dripping from the article to be cleaned 10 in the upper stage is applied to the article to be cleaned 10 in the lower stage, the article to be cleaned in the lower stage is 1
Since about 0 is affected by stains from the upper stage, the paint or metal plating is significantly peeled off, and a poor product is likely to be produced.

In addition, processed products such as print substrates have hitherto been
Although cleaning was done with CFCs, the use of CFCs was recently restricted, so we had no choice but to move to cleaning with CFCs. Therefore, even in the case of electronically processed products such as such printed boards, a step of blowing away the water content after washing with air is required in the same manner as above, and at this time also the electrolyte in the water content condenses and rust is generated. This caused the inconvenience of causing electric leakage.

[0006] As described above, various processed products, which require washing off the water adhering to the processed products before they are put into the drying oven, are mainly caused by the electrolyte in the water. It causes the inconvenience.

The present invention has been made in view of the above circumstances, and wipes the water adhering to the article to be washed as a pre-stage before putting the article to be washed after washing with water, such as a metal processed article or a printed board, into a drying oven. As a device for doing so, it is possible to eliminate the troublesome manual spraying work as in the past, and to remove water evenly without leaving impurities such as electrolyte adhering to the article to be cleaned on the surface of the article to be cleaned. It is an object of the present invention to provide a device capable of performing the above.

[0008]

In order to solve the above problems, the air flasher of the present invention is a total decompression for adjusting the total supply amount of air supplied from a compression pump to a vertically elongated pressure vessel 1. The pressure vessel 1 is equipped with a valve 2
Along the side surface of the solenoid valve, electromagnetic valves 3, 3 ... Which communicate with the pressure vessel 1 are provided at a predetermined interval in the vertical direction, and a nozzle 5 is provided at the tip of each electromagnetic valve 3 via an individual pressure reducing valve 4. The flexible tube 6 attached with is fixed in the horizontal direction, and each solenoid valve 3 is opened and closed by a controller 7 for a predetermined time to intermittently eject air from each nozzle 5.

Further, the nozzles 5, 5, ... May be arranged in a staggered manner in the vertical direction along the side surface of the pressure vessel 1.

[0010]

The operation of the present invention will be described with reference to FIG. 2. As shown in FIG. 2 (a), at the initial stage of air blowing, as shown in FIG. The water 20 on the surface is blown off to the periphery around the air blowing position 21, and then the water containing the condensate of the electrolyte is transmitted from the upper side to the lower side along the surface of the article to be cleaned 10 as shown in FIG. 4 (b). Run down to.

However, according to the present invention, the controller 7 then opens and closes each solenoid valve 3 for a predetermined period of time to intermittently eject air from each nozzle 5 at predetermined intervals. When the air is jetted again after the jetting of the air is stopped, the compressed air in the pressure vessel 1 is discharged all at once in the initial stage of the jetting of air, and the air having a higher pressure than that at the time of the normal opening is momentarily jetted. Therefore, if the solenoid valve 3 is opened and closed intermittently, high-pressure air can be jetted every time the solenoid valve 3 is opened.
Moreover, as shown in FIG. 2 (c), the water that has flowed down from above is repeatedly blown off to the periphery to diffuse (20
(c indicates moisture that diffuses again), and the moisture can be removed uniformly while gradually diluting the impurities such as the electrolyte. Further, in the air flasher of the present invention, since the nozzles 5, 5, ... Are arranged vertically above and below the vertically elongated pressure vessel 1, the water flowing downward from the air jetting position 21 moves downward. By being blown off by the air jetted from the nozzle 5 provided, the moisture on the entire surface of the article to be cleaned 10 can be wiped off while diluting the impurities such as electrolyte hanging downward. Further, since the flexible tube 6 that supports each nozzle 5 can change its direction flexibly,
Even if there is a dent or the like in the article to be cleaned 10 and the cleaning water is accumulated therein, the accumulated water can be blown off by adjusting the direction of the nozzle 5. Further, in the above configuration, if the nozzles 5, 5, ... Are arranged in a zigzag pattern in the vertical direction along the side surface of the pressure vessel 1, the air blowing positions are arranged alternately as shown in FIG. From this, the range of removing water is widened, and the water on the surface of the article to be cleaned 10 can be blown out evenly compared to the case where the nozzles 5, 5 ... Are arranged in a straight line up and down, and impurities such as electrolytes are effective. Can be removed.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of the air flasher of the present invention. 2 (a) to 2 (c) are views showing a situation where air is ejected intermittently at predetermined intervals when the nozzles of the air flasher of FIG. 1 are arranged in a straight line in the vertical direction. 3 (a) to 3 (c) are views showing a situation in which the air jetting is performed intermittently at predetermined intervals when the nozzles of the air flasher of FIG. 1 are arranged in a staggered manner.

In FIG. 1, a pressure vessel 1 is formed by vertically arranging a closed vertical cylinder on a pedestal 9 with casters 9a.
A general pressure reducing valve 2 is attached above the pressure vessel 1. The total pressure reducing valve 2 adjusts the total amount of air supplied from the compression pump (not shown) into the pressure vessel 1 through the pipe 8.

Further, solenoid valves 3, 3, ... Are provided in communication with the inside of the pressure vessel 1 at predetermined intervals in the vertical direction along the side surface of the pressure vessel 1, and each solenoid valve 3 is provided with a pressure reducing valve. The flexible tube 6 which can change the direction flexibly via 4 is connected,
A nozzle 5 is attached to the tip of each flexible tube 6.

Further, a controller 7 is attached above the pressure vessel 1, the controller 7 is connected to each solenoid valve 3, and the controller 7 controls the opening / closing timing of each solenoid valve 3. Specifically, the controller 7 automatically controls each solenoid valve 3 to open and close each solenoid valve 3 at predetermined time intervals, thereby ejecting air discharged from the nozzles at predetermined intervals. Try to do it.

With such a configuration, the total pressure reducing valve 2 is previously set.
The total amount of air supplied to the pressure vessel 1 is adjusted by adjusting the amount of air jetted from each nozzle 5 individually by the cock 4a of the pressure reducing valve 4, and the solenoid valve 3
By adjusting the opening / closing timing of, a predetermined amount of air is intermittently ejected from each nozzle 5 intermittently at a predetermined interval.

As an example of the use of this apparatus, as shown in FIG. 1, a plurality of articles to be cleaned 10 are hung vertically on a feeding device so as to be moved in the horizontal direction, and the hanging position of the article to be cleaned 10 is set. And the direction of each nozzle 5 is set by bending the flexible tube 6 according to the size, and air is intermittently ejected from each nozzle 5 while laterally feeding the article to be cleaned 10 at a minute speed.

In FIG. 1, a plurality of nozzles 5, 5, ... Are divided into three parts according to the size of the article to be cleaned 10 and the three articles 10 to be cleaned are suspended in the vertical position. The nozzles 5, 5, ... Are attached depending on the size and shape of the article to be cleaned 10 or the position of the protrusion 10a.
The usage status and direction of can be set freely.

Further, in such a structure, the respective solenoid valves 3, 3, ... Are arranged in a staggered manner in the vertical direction along the side surface of the pressure vessel 1, whereby the respective nozzles 5, 5, ... Are staggered. It may be configured.

This configuration is different from the configuration in which the nozzles 5, 5, ... Are linearly arranged vertically in the vertical direction as shown in the apparatus of the above embodiment, and is different from that shown in FIGS. 3 (a) to 3 (c). As shown in the drawing, the air spraying positions 21 are staggered in a staggered manner to increase the area of contact with the surface of the article to be cleaned 10. Therefore, the range of removing water is widened, and the surface of the article to be cleaned 10 is evenly distributed. It can be blown away.

Further, the apparatus shown in FIG. 1 is sprayed on a plurality of articles 10 to be washed which are sent in the lateral direction in parallel or in parallel by spraying two or more articles to be washed. The moisture of the product can be removed and the electrolyte can be prevented from remaining. Incidentally, as described above, the air flasher of the present invention is not only a metal processed product but also an electronic product such as a printed circuit board, and further other processed products after washing with water are water attached to the processed product as a pre-stage before being put into a drying furnace. It is beneficial over all processed products that need to be wiped away.

[0022]

As described above, according to the air flasher of the present invention, the nozzles 5, 5, ... That are provided above and below the vertically elongated pressure vessel 1 can freely blow air onto the article to be cleaned 10. Since it can be thickened in various directions and the air jet from each nozzle 5 can be intermittently performed at preset intervals, it prevents the spray coating, metal plating, etc. from peeling off, rust on the printed circuit board, or electric leakage. It is possible to uniformly remove the water content of the article to be cleaned 10 without leaving the components such as the electrolyte contained in the causative water on the surface of the article 10 to be cleaned.

As a result, it is possible to obtain a non-defective product which is free from peeling or unevenness in the spray finish after drying or the coating finish such as metal plating in the metal processed product, and the occurrence of rust in the electronic parts such as the printed circuit board. It is possible to obtain a good product without the risk of electric leakage. Further, since the present apparatus is completely automated, the spraying work can be performed by a very small number of workers, which is also useful for reducing labor.

[Brief description of drawings]

FIG. 1 is a side view of an air flasher of the present invention.

2 (a) to 2 (c) are views showing a situation in which air is ejected intermittently at predetermined intervals when the nozzles of the air flasher of FIG. 1 are arranged in a straight line in a vertical direction. is there.

3 (a) to 3 (c) are views showing a situation in which air ejection is intermittently performed at predetermined intervals when the nozzles of the air flasher of FIG. 1 are arranged in a staggered manner. .

FIG. 4 (a) and FIG. 4 (b) are conceptual diagrams for explaining an air blowing action using a conventional air gun.

[Explanation of sign]

DESCRIPTION OF SYMBOLS 1 ... Pressure container, 2 ... Comprehensive pressure reducing valve, 3 ... Electromagnetic valve, 4 ... Pressure reducing valve, 5 ... Nozzle, 6 ... Flexible pipe, 7 ... Controller, 10
… Items to be cleaned, 10a… Projections of the item to be cleaned.

Claims (2)

[Claims] 1. A vertically elongated pressure vessel 1 is provided with a total pressure reducing valve 2 for adjusting the total amount of air supplied from a compression pump, and is vertically spaced along a side surface of the pressure vessel 1 at predetermined intervals. Solenoid valves 3 and 3 that open to communicate with the pressure vessel 1
... and a pressure reducing valve 4 for each solenoid valve 3
A flexible tube 6 having a nozzle 5 attached to the tip thereof is fixed in the horizontal direction via the, and each solenoid valve 3 is opened and closed by a controller 7 for a predetermined time so that air is jetted from each nozzle 5 intermittently. An air flasher that is characterized by 2. The air flasher according to claim 1, wherein the nozzles 5, 5, ... Are arranged in a zigzag pattern in the vertical direction along the side surface of the pressure vessel 1.