Inert gas protection device for welding

The utility model relates to the field of welding auxiliary devices, in particular to an inert gas protection device for welding. The cover comprises a cover body used for being movably connected with a welding head, the cover body comprises an outer sleeve, one end of the outer sleeve is provided with a welding opening corresponding to the welding head, the other end of the outer sleeve is provided with an installation opening allowing the welding head to stretch in, and the side wall of the outer sleeve is further provided with an air inlet used for introducing inert gas. And a shielding mechanism for shielding the mounting opening is arranged at the mounting opening of the outer sleeve. The welding device has the effect of improving the welding quality. 本申请涉及焊接辅助装置的领域，尤其是涉及一种焊接用惰性气体保护装置。其包括用于与焊接头活动连接的罩体，所述罩体包括外套筒，所述外套筒一端开设有与焊接头对应的焊接口，另一端开设有供焊接头伸入的安装口，所述外罩筒侧壁还开设有用于通入惰性气体的进气口，所述外套筒在安装口处设置有用于遮蔽安装口的遮蔽机构。本申请具有提高焊接质量的效果。