VORRICHTUNG ZUR AUTOMATISCHEN REINIGUNG DER LUFTKAPPE, INSBESONDERE EINER SPRITZPISTOLE

摘要

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.