Automated device for applying evaporator beads to a conductive wire

摘要

An intermittently driven reel that advances wire through the apparatus in a step manner. A predetermined quantity of powdered metal is automatically brought into contact with the wire by a reciprocating plunger. Current is passed through the wire to heat the wire thereby causing the quantity of powdered metal to melt and form a bead on the wire. Once the bead is formed as detected by the electronics, the wire is advanced and the plunger is refilled with powdered metal.