Patent ID: 6444273
Filing Date: 2002-09-03
Classification: B05B

Abstract:
A method of triggering one or more spray guns in an automatic spray coating system having at least one spray gun located proximate to a conveyor on which a part to be coated is conveyed past the spray gun, the method comprising the steps of:sensing a location of said part as it is conveyed on the conveyor relative to a reference point, determining a first distance of said part at a start spray position relative to said reference point; determining a second distance of said part at a stop spray position relative to said reference point; determining a front edge spray gun control parameter by combining said first distance with a pickoff distance, said pickoff distance being defined as the distance from the gun to the sensor; determining a back edge spray gun control parameter by combining said second distance with said pickoff distance and a length of said part; and automatically coating said part conveyed past the spray gun according to the front edge spray and the back edge spray gun triggering control parameters.