Pneumatic wire threading device and method

Abstract

A wire threading device for automatically threading a bonding wire in a wire bonding apparatus includes a wire guiding block configured to form a guiding channel for directing a bonding wire during a threading process and a slot connected to the guiding channel to release the bonding wire after the threading process, wherein wire guiding block is positioned between an air tensioner and a bonding tool of the wire bonding apparatus in use to guide the bonding wire from the air tensioner to the bonding tool, and a pneumatic wire pulling mechanism comprising a plurality of air channels extending in directions that intersect an axial direction of the guiding channel, the pneumatic wire pulling mechanism being configured to apply a plurality of pulling forces on the bonding wire via the air channels, enabling the bonding wire to be pulled into and through the guiding channel during the threading process. [Most Illustrative Figure: FIG. 1]