| 摘要 |
PURPOSE:To enhance the efficiency of a painting line by rapidly performing the next painting within a short time, by forming two systems of flow passages reaching two color change valves from a main pipe and by washing one of the flow passages while holding the other flow passage to a paint supply state. CONSTITUTION:The paint, washing liquid and compressed air from a main pipe 10 are branched into two systems of the first and second, that is, the upper and lower side A- and B-systems between connection pipes 13, 14 and a change- over valve 19 by the connection pipes 13, 14. For example, in such a state that paint is supplied to a coating gun 17 through the color change valve 11 on the side of the A-system, the flow passage of the system passing through the color change valve 12 of the B-system can be washed. Therefore, when the paint to a product to be painted is altered, only by washing the part from the change-over valve 19 to the coating gun 17, the next painting work can be rapidly performed within a short time.
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