B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
B05D 1/04 (2006.01) B05B 5/04 (2006.01) B05B 12/14 (2006.01) B05B 15/02 (2006.01) B05B 3/10 (2006.01) B05B 7/08 (2006.01)
Patent
CA 2061069
A method of electrostatically spray-coating a workpiece with electrically-conductive paint subjected to a voltage using a spray gun, the spray gun having a rotatable atomizing head attached to a rotator for rotating the atomizing head. A paint supply line supplies paint to the atomizing head and a cleaning line supplies cleaning liquid and air, where the air is under a pressure, to the atomizing head. The rotator has a path for accommodating the paint supply line and the cleaning line therein, that path being formed in a cylindrical shape along a rotative axis of the rotator. The cleaning line is disposed coaxially in the path with an end opening thereof disposed in the atomizing head. The paint supply line is disposed coaxially within the cleaning line and has a nozzle tip thereof projecting frontward from the end opening of the cleaning line into the center of the atomizing head, preventing liquid communication between it and the cleaning line. The method comprises the steps of: electrostatically spray-coating the workpiece with the paint; supplying the cleaning liquid to the atomizing head via the cleaning line to wash the atomizing head after spray-coating; supplying the air to the cleaning line after washing the atomizing head, to discharge the cleaning liquid remaining in the cleaning line through the atomizing head, at a delivery rate within a rate of spraying the paint during the spraycoating; and drying the cleaning line before spray-coating a next workpiece, to prevent voltage leakage, with air under pressure higher than an air pressure used for discharging the remaining cleaning liquid.
Arai Hiroshi
Ishibashi Ichirou
Kubota Toshio
Ono Yukihito
Toyama Niichi
Honda Giken Kogyo Kabushiki Kaisha (also Trading As Honda Motor Ltd .)
Marks & Clerk
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