Resin coating method and apparatus

Abstract

A resin coating apparatus includes a feed tank 2 for feeding a coating material 9 to a coating tank 1 and an extraction cylinder apparatus 3 for extracting the coating material inside the coating tank 1 and returning the coating material extracted to the feed tank in addition to the coating tank 1 for immersing a work 10. The coating material compulsively extracted from the coating tank in which the work 10 is immersed. The extraction cylinder apparatus has a speed regulation apparatus 4 and the extraction speed of the coating material is regulated in accordance with the shape of the work.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

In the drawings:

FIG. 1 is an explanatory view for explaining an overall construction of a resin coating apparatus according to an embodiment of the invention;

FIG. 2 is an explanatory view for explaining coating steps (a) to (d) as the operation of the resin coating apparatus (resin coating method) according to the embodiment of the invention;

FIG. 3 is an explanatory view for explaining the operation of the resin coating apparatus according to the invention;

FIG. 4A is a graph for explaining the coating operation according to the invention and FIG. 4B is an explanatory view for explaining adjustment of an extraction speed of a coating material;

FIG. 5 is a sectional view and a side view each for explaining a work suitable for the resin coating method according to the invention; and

FIGS. 6A and 6B are explanatory views for explaining a resin coating method according to the prior art.

Claims

1. A resin coating method using a coating apparatus including: a coating tank for immersing an article to be coated into a liquid coating material containing a resin material;a feed tank for feeding said coating material into said coating tank;coated article transfer means for transferring said article to be coated into said coating tank and taking it out therefrom; andcoating material extraction means for extracting said coating material inside said coating tank; and whereinsaid resin coating method transfers the article to be coated into said coating tank, immerses said article to be coated in said coating material for a predetermined time and applies said coating material to said article to be coated by compulsively extracting said coating material from said coating tank by said coating material extraction means.

2. A resin coating method according to claim 1, which said resin coating method comprises: an initial step of transferring said article to be coated into said coating tank by said coated article transfer means;a coating material feeding step of feeding said coating material from said feeding tank into said coating tank and immersing said article to be coated into said coating material;a coating material applying step of extracting said coating material from said coating tank by said coating material extraction means after being kept immersing in said coating material for the predetermined time; anda coating material recovering step of taking out said article to be coated from said coating tank by said coating material transfer means and returning said coating material from said coating material extraction means to said feeding tank.

3. A resin coating apparatus for applying a coating material to an article to be coated comprising: a coating tank for immersing an article to be coated into a liquid coating material containing a resin material;coated article transfer means for transferring said article to be coated into said coating tank and taking it out therefrom;a feed tank for feeding said coating material into said coating tank; anda drawing cylinder apparatus for drawing said coating material in said coating tank and returning said coating material drawn into said feed tank; and whereinsaid coating material is compulsively extracted from said coating tank.

4. A resin coating apparatus according to claim 3, which further comprises a speed regulation apparatus for regulating an extraction speed of said coating material in said extraction cylinder apparatus, and regulates the extraction speed to match the shape of said coated article.

5. A resin coating apparatus according to claim 3, which further comprises temperature stabilization means so that the viscosity of said coating material does not change during the application operation of said resin coating apparatus.

6. A resin coating apparatus according to claim 3, wherein said article to be coated has two surfaces, facing each other, so arranged as to be parallel to each another with a gap between them.