Paint spray guns are cleaned in respective cleaning tanks. In each of the cleaning tanks, a cleaning fluid is ejected to the nozzle end of the paint spray gun by a plurality of cleaning guns disposed in the cleaning tank. The paint spray guns and the cleaning tanks are relatively movable so that the cleaning tanks are retracted away when the paint spray guns spray a paint coat over a desired object such as a vehicle body. Each of the cleaning tanks includes two flexible cover members having holes for inserting the paint spray gun therethrough. The cover members and the inserted paint spray gun close a cleaning chamber defined in the cleaning tank to prevent the cleaning fluid from leaking out. Each cleaning tank comprises a base plate and a casing detachably mounted on the base plate and defining the cleaning chamber. Nozzles or an annular pipe is mounted on and outside of each cleaning tank for ejecting air under pressure to the paint spray gun which has been displaced out of the cleaning tank, thereby to dry any remaining cleaning solution on the paint spray gun. Pipes for supplying paint to the paint spray guns are also cleaned by air under pressure and a solvent which are introduced into the pipes to produce air bubbles for removing paint deposits from within the pipes.
Nov 10, 1986 [JP] 61-268226 Nov 10, 1986 [JP] 61-268227 Nov 10, 1986 [JP] 61-268228 Nov 10, 1986 [JP] 61-268229 Nov 10, 1986 [JP] 61-172826 Nov 10, 1986 [JP] 61-172827 Nov 10, 1986 [JP] 62-172828
Apparatus is disclosed for cleaning exposed surfaces on a nozzle and air cap assembly of an automatic paint spray gun. Solvent is delivered to a nozzle for cleaning the exposed surfaces. The nozzle is supported by a piston which is moved by the solvent flow to advance the nozzle to a cleaning position in front of the spray gun. Solvent cannot flow to the solvent nozzle until the piston moves the solvent nozzle to the cleaning position. A spring retracts the piston and the nozzle when solvent flow ceases. During cleaning, an air curtain protects the spray gun from the solvent and paint spray.
An automated pipeline rehabilitation apparatus (10) is disclosed. The apparatus employs a centering assembly (24) with pivoting arms (26, 28) which can pivot between an operating position and an installation/removal position to allow the unit to be removed from a pipeline. Arcuate rings (38, 40) are mounted on the arms. Spray nozzles (44) are mounted on the arcuate rings for reciprocating arcuate motion along the rings to treat the pipeline. The nozzles (44) can be used to clean the pipeline and prepare the outer surface of the pipeline with high pressure water jets with entrained abrasives. The nozzles (44) can also be used to apply a coating, preferably a polyurethane coating to the pipeline. A nozzle assembly (200) can be used to mount a spray gun (204) on the apparatus. The nozzle assembly permits easy adjustment of the nozzle position in two different directions to insure a consistent spray pattern. The nozzle assembly also provides for reversal of the tip of the nozzle for cleaning.
A process and station for changing product in an installation for spraying coating product, by bringing a first reservoir towards a suitable area of a cleaning/filling station, separating a sub-assembly composed of the first reservoir and a first spray associated therewith, with respect to the robot, connecting with the robot a second, similar sub-assembly composed of a second reservoir and a second spray, adapted to be used for spraying coating product during cleaning and/or filling of the first reservoir and the first spray, and proceeding with cleaning and/or filling of the first reservoir and the first spray in the area.
A color changing system for spray dyeing comprises a pair of washing tubs and a pair of spraying units. Each of the spray units includes a nozzle/nozzles, a feed pipe and a movable pipe. The spraying units are alternately operated to spray dye liquid onto a fabric strip, and are washed in the washing tubs to prepare for spraying new dye liquid onto the fabric strip.
A process and station for changing product in an installation for spraying coating product, by bringing a first reservoir towards a suitable area of a cleaning/filling station, separating a sub-assembly composed of the first reservoir and a first spray associated therewith, with respect to the robot, connecting with the robot a second, similar sub-assembly composed of a second reservoir and a second spray, adapted to be used for spraying coating product during cleaning and/or filling of the first reservoir and the first spray, and proceeding with cleaning and/or filling of the first reservoir and the first spray in the area.
