Nordson Corporation

Drew Roberts

Patrick T Hogan

Richard G Christyson

John P Byers

James D Powell

Kenneth Zalewski

James Khoury

Timothy E Wilson

Charles Nagy

Lenzie Borders

A spray application system for applying material to a surface of a rotating body such as a beverage can includes a detector that detects the actual speed of rotation of the surface during a spraying operation. This allows a controller to adjust trigger signals for the application device to be adjusted based on speed of rotation to minimize overcoat. A laser sensor may be used as an example. The use of the speed detector also allows for partial wraps as well as full wraps of applying material to the rotating surface.

Surface rotation speed detection in spray systems

A first embodiment includes a control system which operates a spray gun to apply an even coating of flux to a circuit board or a plurality of different length circuit boards irrespective of the speed that the circuit board(s) move through a coating chamber. In a second embodiment, the control system pulses the spray gun on and off with a pulsing pattern that coats a plurality of zones of a circuit board with spray patterns of different length and thickness.

Method and control system for applying solder flux to a printed circuit

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Concord, OH, United States of America

Drew Roberts