A welding rod drive system for hand held hot gas high speed welding

摘要

A mechanized drive system G for use in a hand-held hot gas high speed welding comprises a sharp toothed pinion gear which drives a plastic welding rod D and in turn controls the welding speed. The rotational speed of the pinion and thus the welding speed may be varied by the operator and the system may be releasably attached to a hot gas gun A or stick welder. Adjustable pressure H may be exerted on the pinion gear such that shallow cuts are made into the plastic welding rod—this awards flexibility to the plastic welding rod to enable welding in tight corners, a reduction of the tendency for the rod to weld itself inside the nozzle and better regulation of the pressure exerted onto the nozzle by an operator. When used the system allows one handed operation of the gun.