Nozzle for gas shielded arc welding
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsShigetomo Matsui, Shigeru Nakayama, Hiroichi Okada, Takashi Sakurai
Life of this patent
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Abstract
A nozzle for gas shielded arc welding having a support ring to be mounted on a welding torch, a cylindrical nozzle member to be mounted on the support ring and a holddown ring for securing the nozzle member to the support ring. The nozzle member is formed of a heat-resistant non-conductive material so that spatters seldom adhere to the nozzle member. The nozzle member is fixed by being pressed against the support ring, which structure facilitates the manufacture of the nozzle member. This is useful especially as a nozzle for CO.sub.2 arc welding.
Claims14
A nozzle for a gas shielded arc welding torch comprising:
- a support ring for mounting on a forward end portion of the welding torch;
- a cylindrical nozzle member formed of heat-resistant non-conductive material mounted on a forward end of said support ring, said nozzle member having an annular groove formed on an outer periphery of one end portion thereof;
- a split ring spring locked in the annular groove and projecting outwardly from the outer peripheral surface of said nozzle member;
- means for securing said nozzle member to said support ring;
- and
- said securing means including a holddown ring mounted on the forward portion of said support ring to extend forwardly in surrounding relation with the outer periphery of the one end of said nozzle member including the annular groove and said split ring spring and having an engaging surface which engages with a forward surface of said split ring spring on said nozzle member to press said nozzle member against said support ring.
Dependencies are inferred from the claim text.