| 摘要 |
The invention relates to a spray gun suitable for electrostatic coating, using a coating material whose electric resistance is relatively low. A coating material nozzle ( 24 ) is attached to the front middle region of a barrel ( 2 ) having a forwardly projecting cylindrical section ( 36 ) on the front outer peripheral edge, and an air cap ( 40 ) which covers their front surfaces is installed. A pattern air flow channel ( 45 ) is formed between the air cap, coating material nozzle outer peripheral surface and the cylindrical section inner peripheral surface, and an annular electrode ( 13 ) is attached to the inside of the flow channel. The air cap is centrally provided with an atomization air spout hole ( 32 ), and a coating material delivery port ( 30 ) at the front end of the coating material nozzle is inserted therein. A pin electrode ( 31 ) is projected forward through the coating material delivery port. A pair of square section ( 39 ) are projected forward from the right and left ends of the air cap, each square section being formed with a pattern air spout hole ( 38 ). The pin electrode is grounded and a high dc voltage is applied to the annular electrode.
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