초록 ▼

An apparatus for electrostatically spray-coating a workpiece with conductive paint which includes a color changeover valve mechanism for selectively supplying conductive paint, cleaning liquid and air. A flush valve mechanism is provided for selectively supplying the cleaning liquid and the air. A f

An apparatus for electrostatically spray-coating a workpiece with conductive paint which includes a color changeover valve mechanism for selectively supplying conductive paint, cleaning liquid and air. A flush valve mechanism is provided for selectively supplying the cleaning liquid and the air. A first directional control valve includes an outlet and inlets. The inlets are connected to feed lines extending from the color changeover valve mechanism and the flush valve mechanism, respectively. A block line is made of an insulating material and has a first end connected to the outlet of the first directional control valve. The block line includes a second end in communication with the first end. A second directional control valve is provided having outlets and an inlet. The inlet is connected to the second end of the block line. An intermediate reservoir is connected via a feed line to one of outlets of the second directional control valve. A waste-liquid tank is connected via a first discharge line to a second outlet of the second directional control valve. A spray gun is connected via a delivery line to the intermediate reservoir. A second discharge line is branched from the delivery line via a changeover valve. A discharge line cleaning mechanism is provided for selectively supplying at least cleaning liquid and air to the second discharge line. A high voltage is applied to the conductive paint between the second directional control valve and the spray gun.

대표청구항 ▼

An apparatus for electrostatically spray-coating a workpiece with conductive paint, said apparatus comprising: a color changeover valve mechanism for selectively supplying cleaning liquid, air and the conductive paint through a supply line; a first flush valve mechanism for selectively supplying the

An apparatus for electrostatically spray-coating a workpiece with conductive paint, said apparatus comprising: a color changeover valve mechanism for selectively supplying cleaning liquid, air and the conductive paint through a supply line; a first flush valve mechanism for selectively supplying the cleaning liquid and the air; a first directional control valve having an outlet and inlets, said inlets being connected to said supply line and a feed line extending from said color changeover valve mechanism and said flush valve mechanism, respectively; a block line made of an insulating material and having a first end connected to said outlet of said first directional control valve, said block line includes a second end in communication with said first end; a second directional control valve having outlets and an inlet, said inlet being connected to the second end of said block line; an intermediate reservoir connected via a second feed line to one of the outlets of said second directional control valve; a waste-liquid tank connected via a first discharge line to a second one of the outlets of said second directional control valve; a spray gun connected via a delivery line to said intermediate reservoir; a second discharge line branched from said delivery line via a changeover valve; a second flush valve mechanism selectively supplying at least cleaning liquid and air to said second discharge line, said second flush valve mechanism being provided separately from said color changeover valve mechanism for said supply line; and means for applying a high voltage to the conductive paint between said second directional control valve and said spray gun.