High-output automatic powder-spraying systems are the norm for major appliance producers today. As the speed and volume of production processes increase, there is a greater need to effectively use the powder-spraying equipment to achieve complete parts coverage. A spreadsheet program has been developed to address the need to optimise the gun-spraying patterns on a variety of appliance parts. Variables that affect the gun-spraying patterns are number of guns, conveyor speed, gun spacing, part height, spray width, part shape, nozzle shape, part design, gun motion, and powder. Gun set-up formulas have been developed to determine the number of fixed guns required, gun distance from part, spacing between guns, number of moving guns required, gun mover stroke and gun mover speed. Diagrams are shown.
