| 摘要 |
PURPOSE:To prevent the coating defects of thick coating, lack of hiding, etc., by providing a mechanism for detecting the stroke and direction of the reciprocating coating machine and monitoring its position, a coating width controller, an operating time sensor and a correction control means. CONSTITUTION:The operation timing of a control valve 3 is determined by a control circuit 4 based on the signal (a) from a pulse counter in its determination circuit, an actuating signal (p) at that time is sent to the valve 3, and a coating valve 2 is opened or closed by an air actuating signal p' outputted therefrom. The ON/OFF of the valve 3 is controlled by the determination circuit in the control circuit 4 so that the coating is discharged from a coating apparatuses in the intermediate part except both side parts while the traveling speed is reduced among the reciprocating ranges of the coating apparatuses 1a, 1b and 1c. Although the entire coating widths 21a, 21b and 21c are ordinarily coated, only a part of the width, e.g. a region corresponding to the surface of a metallic body is coated, as required. A uniform coating film is formed on the entire coating width in this way.
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