JPH0426122A - Method and apparatus for drying high integration work after washing - Google Patents

Abstract

PURPOSE:To dry a high integration work in a short time by enclosing the work after washing in a sealed room, passing dry air having low dew point in the room, and removing moisture remaining on the contact part of the work. CONSTITUTION:A high integration work 1 after washing, conveyed by a conveyor 15 is once stopped at a position to be contained in a drying device body 2, an upper cover 3 is moved down, and enclosed in the body 2. The body 2 is completely sealed by a lower tray 4 and an O-ring 7 provided at a conveyor trestle 14. Dry air having a low dew point is supplied from a dry air supply port 8, discharged from a dry air discharge port 9 to exposed the work after washing with the dry air having a low dew point, thereby removing moisture remaining on a contact part. As the dry air having a low dew point, dry air having a dew point at -30 deg.C is employed.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method and apparatus for drying highly integrated workpieces after washing with water, and more particularly, the present invention relates to a drying method and apparatus for highly integrated workpieces after washing with water, and more specifically, the present invention relates to a drying method and apparatus for drying highly integrated workpieces after washing with water. The present invention relates to a method and apparatus for drying highly integrated workpieces after water washing, which can speed up the drying process.

[Conventional technology]

As is well known, highly integrated workpieces that have other components mounted or mounted on one surface and have a high density per unit area are often washed with water because they do not like dirt or dust to adhere to them due to their nature. ing. Moisture remains in the close contact parts of each component of the highly integrated workpiece after water washing, and if left as is, problems such as corrosion will occur, so in order to prevent this, the highly integrated workpiece After washing with water, it is necessary to remove any remaining moisture from the contact area and dry it. For this purpose, conventionally, the highly integrated workpiece after water washing is exposed to hot air to heat and evaporate the moisture remaining in the adhering parts, and then the highly integrated workpiece after water washing is dried. [Problem to be solved by the invention] The above-mentioned conventional technology uses hot air to heat and evaporate the moisture remaining in the close contact parts of highly integrated workpieces after washing with water. , the moisture remaining in the highly integrated workpiece itself and the parts that are in close contact with each other does not evaporate unless it reaches a certain level of humidity, resulting in the problem that it takes a long time to dry. Increasing the temperature of the hot air is not necessarily preferable in consideration of the heat resistance of highly integrated workpieces, and therefore it has been difficult to shorten the drying time of highly integrated workpieces after washing with water.

[Purpose of the invention]

Therefore, an object of the present invention is to solve the problems of the conventional techniques as described above, and to remove moisture remaining in the close contact areas of highly integrated workpieces after washing with water in a short period of time. Therefore, it is an object of the present invention to provide a method and apparatus for drying a highly integrated work after washing with water, which can dry the highly integrated work after washing with water in a short time.

[Means to solve problems]

In order to achieve the above object, the present invention has the following technical means. That is, to explain using the reference numerals used in the attached drawings corresponding to the embodiments, a highly integrated workpiece after washing with water is confined in a sealed room, and in that state, dry air with a low dew point is passed through the sealed room. , the moisture remaining in the close contact portion of the highly integrated workpiece after water washing is removed by vaporizing it in the dry air having a low dew point, and the highly integrated workpiece after water washing is dried. This is a drying method for highly integrated workpieces after water washing, in which one or more of the highly integrated workpieces 1 after water washing that are sent sequentially can be placed in an open state, and one or more of them can be placed in an open state. It consists of a drying device main body 2 configured to confine each unit of
This drying apparatus for highly integrated workpieces after washing with water is characterized by having means for supplying and exhausting dry air having a low dew point into the drying apparatus main body 2.

[Effect]

Since the present invention comprises the above-mentioned technical means, the highly integrated work after water cleaning is confined in a closed room and then exposed to dry air with a low dew point. At this time, the moisture remaining in the adhering area becomes water vapor when it comes into contact with the dry air with the low dew point mentioned above, so the remaining moisture gradually turns into water vapor and evaporates from the surface. As soon as dry air with a low dew point is passed through the closed room, moisture remaining in the close contact areas of highly integrated workpieces after washing with water is removed, making it possible to dry highly integrated workpieces after washing with water. This can be done quickly and the drying time can be shortened. Then, dry air with a low dew point is supplied to the drying device main body 2, which is configured to accommodate one or more highly integrated works 1 that have been sequentially sent after being washed with water, one or more units at a time, By providing a means for evacuation, it is possible to provide a drying apparatus for highly integrated workpieces after water washing, which is capable of drying the highly integrated workpiece l after water washing as described above. Since it is possible to dry the highly integrated work pieces 1 in a short time, it is possible to efficiently dry the highly integrated works l that are sequentially sent after being washed with water.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the drying device for highly integrated work l after washing with water consists of a drying device main body 2 and a conveyor section 15. The upper lid 3 is provided with a slit 5, which is connected to a dry air supply port 8 and a dry air exhaust port 9 for supplying and exhausting dry air with a low dew point. This ensures good dry air supply and exhaust conditions. Further, a slide shaft 6 is provided on one side of the L lid 3, and the drying apparatus body 2 is opened and closed by moving the slide shaft 6 up and down using a cylinder or the like. The conveyor section 15 is made up of a conveyor pedestal 14 and a shaft 12 supported by a bearing 11 provided on the conveyor pedestal 14 and provided with conveying rollers 10, and a sprocket 1 provided at one end of the shaft 12.
3 is rotated via a chain to transport highly integrated workpieces l after being washed with water.

Next, an example of its use will be explained.

The highly concentrated work l after being washed with water and conveyed by the conveyor section 15 is temporarily stopped at a position where it is accommodated in the drying device body 2, and the upper lid 3 descends to form the work l shown in FIG. 3. It is trapped inside the drying device main body 2 in the same way. At this time, the main body 2 of the drying device 1 is completely sealed by the O-ring 7 provided on the lower tray 4 and the conveyor frame 14. Then, by supplying dry air with a low dew point from the dry air supply port 8 and exhausting the air from the dry air exhaust port 9, the highly integrated work l after water washing is exposed to the dry air with a low dew point, which remains in the contact area. This removes the moisture that is present. When the dry air with the low dew point mentioned above comes into contact with moisture remaining in the close contact area, it gradually vaporizes and removes the moisture from the contact surface, so the residual moisture can be removed in a short time. It is possible to finish drying. Furthermore, at this time, the dry air having the low dew point is supplied and exhausted through the slit 5, so that it can be sufficiently circulated and convected within the drying device main body 2, and residual moisture can be removed more efficiently. It is something that can be done.

By using dry air with a dew point of 130°C as the dry air with a low dew point, the highly integrated workpiece 1 can be dried in a short time after being washed with water, and can be dried relatively easily. It is something that allows you to get some air.

After the drying of the highly integrated workpiece 1 after washing with water is completed, -
Move the L pig 3 upwards, open the drying device main body 2,
The highly integrated workpiece 1 is moved in the direction indicated by the arrow in the figure, and the drying work of the highly integrated workpiece 1 after washing with water is completed. And L
By repeating the above-mentioned operations, the highly integrated workpieces 1 that have been washed with water and are sent successively are dried. still,
In this embodiment, a printed circuit board with electrical/electronic components mounted thereon is shown as the highly integrated work 1, but the invention is not limited to this.
The conveyance method is also shown as a conveyor system, but it is not limited to this.

〔effect〕

As detailed above, the present invention provides the following effects.

That is, according to claim 1, a highly integrated workpiece after washing with water is confined in a closed room and exposed to dry air with a low dew point, and when the dry air with a low dew point comes into contact with moisture, the moisture is removed. By taking advantage of the property of water vapor being removed one after another from the contact area, that is, from the surface, residual moisture that could not be removed in a short time with hot air can be removed in a short time from the close contact areas of highly integrated workpieces after washing with water. It is something that can be done. And according to claim 2.

By setting the frost point of the dry air with the low dew point to -30°C, highly integrated workpieces can be dried in a short time after washing with water, and the dry air can be relatively easily dried. Further, according to claim 3, it is possible to accommodate one or more highly integrated workpieces that have been sequentially sent after being washed with water, one or more units. By providing a means for supplying and exhausting dry air with a low dew point to the drying device main body 2 configured as above, it is possible to quickly and efficiently dry high-density workpieces after washing with water. We can provide workpiece drying equipment.

In addition, according to claim 4, by setting the dew point of the dry air having a low frost point to -30°C, highly integrated workpieces can be dried in a short time after being washed with water, and the dry air can be relatively easily dried. It is something that can be obtained.

[Brief explanation of the drawing]

The attached drawings show an embodiment of the present invention, and FIG. 1 is an overall sectional view showing the structure of the drying device, and FIG. 2 is a sectional view taken along line A-A' in FIG. 1. , Figure 3 shows the 2nd r! ! J shows a sectional view showing the drying device main body in a sealed state. The symbols in the figure are: 1, Highly integrated workpiece 2, Drying device main body 3, Upper lid 4, Lower tray 5, Slit 6, Slide Axis 7... 0 ring 8, dry air supply port 9, dry air exhaust port 10. ,,,conveying roller 11,,,,bearing 12. ,,,axis 13
...Sprocket 14. , , conveyor pedestal 15 , . . . conveyor sections are shown, respectively. Agent Patent Attorney Ike 1) Hiroozu

Claims (4)

[Claims] (1) Confining the highly integrated workpiece after washing with water in a sealed room, and passing dry air with a low dew point through the sealed room, the residue remains on the close contact parts of the highly integrated workpiece after washing with water. A method for drying a highly integrated workpiece after being washed with water, characterized in that the moisture contained in the workpiece is removed by vaporization in dry air having a low dew point, and the highly integrated workpiece after being washed with water is dried. (2) The method for drying highly integrated workpieces after washing with water according to claim 1, wherein the drying air having a low dew point has a dew point of -30°C. (3) One or more of the high-integration workpieces 1 that have been sequentially sent after water washing can be placed in an open state, and that 1
The drying device main body 2 is configured to confine one or a plurality of dry air in one unit, and the drying device main body 2 is provided with means for supplying and exhausting dry air having a low dew point. Drying device for highly integrated workpieces after cleaning. (4) The highly integrated workpiece after water washing according to claim 3, characterized in that the drying air with a low dew point supplied and exhausted into the drying device main body 2 has a dew point of -30°C. drying equipment.