Patent ID: 6660092
Filing Date: 2003-12-09
Classification: B05B,B21D

Abstract:
A device for applying a coating agent to a cyclically moved substrate comprising:at least one spray valve having an inlet, said inlet for supplying the spray valve with the coating agent, the spray valve having a nozzle opening means for adjusting a discharge rate of the coating agent out of the spray valve based on a rate of advance of the substrate, said nozzle opening means being adjustable relative to a size of a discharge area thereof, the nozzle opening means comprising: a valve seat; a valve needle cooperative with said valve seat; a doing spring means cooperative with said valve needle for lifting said valve needle from said valves at, said valve needle resiliently contacting a stop against a force of said closing spring means, said stop comprising a rotatable cam having a contour cooperative with said valve needle, said contour corresponding to a desired discharge rate of the coating agent out of the spray valve based upon the rate of advance of the substrate; a driving means drivingly connected to said cam for rotating said cam; and a control means interactive with said driving means, said control means for determining the rate of advance of the substrate and for determining a desired angular position of said cam relative to the rate of a vance, and control means for actuating said driving means so as to rotate said cam to the desired angular position.