Method and apparatus for coating of circuit boards

An apparatus for coating printed circuit boards with insulating material which comprises;

• a source of insulating material;
• a manifold in fluid communication with said source of insulating material;
• a conveyer for moving a printed circuit board mounted thereto under said manifold;
• means for sensing the space between a printed circuit board mounted on said conveyer and said manifold and means for stopping the movement of said conveyer for a predetermined period of time in response to a signal from said sensing means;
• a plurality of flexible nozzles in fluid communication with said manifold, said flexible nozzles being selectively bendable to direct a flow of the insulating material to predetermined locations on the top of the printed circuit board as the printed circuit board moves under said manifold on said conveyer;
• and
• means in fluid communication with said source of insulating material for coating the bottom of a printed circuit board with insulating material as the printed circuit board moves on said conveyer.

A method of coating printed circuit boards with insulating material comprising:

• mounting a printed circuit board to a conveyor and moving the conveyor;
• stopping the conveyor when the printed circuit board is under a manifold having a plurality of lengths of flexible tubing mounted thereto, each of said lengths of flexible tubing being in fluid communication with a source of insulating material;
• bending said lengths of flexible tubing to direct a flow of insulating material to predetermined locations on the printed circuit board under said manifold;
• and
• delivering a measured flow of insulating material to the printed circuit board through said lengths of flexible tubing.