Torch head structure of shielding arc welding protection gas for narrow gap portion

摘要

the present invention is to improve the narrow joints for gas shielded arc welding torch head protection structure to the start. Torch head structure for the shielding gas shielded arc welding torch is a body (1); And installed on the lower end of the torch body (1) and receiving the upper end portion of the welding tip 10, the collet to the conduit of the protective gas arc welding body (3); Ceramic installed on the outer peripheral surface of the collet body (3) and to shield the arc welding shielding gas nozzle (4); To include; and provided between the outer surface and the ceramic nozzles (4) of the collet body (3) and the sliding unit 20, which can slide up and down of said collet body (3) the ceramic nozzle 4 characterized. The present invention is by using a single slidable ceramic nozzle without consuming replacement of the ceramic nozzle, while optimizing the shielding effect of the shielding gas during welding of the deep groove portion changes as a welding layer laminated groove portion of the groove (or grooves) should be able to perform welding work on the smooth welding depth. ;