▎ 摘　　要

NOVELTY - A welding device, comprising a first electrode opposite to each other, the second electrode, the second electrode can move relative to the first electrode and matched with the first electrode to finish the welding, between the first electrode and the second electrode is further provided with a polishing mechanism, the polishing mechanism comprises a driving component and a polishing component, the driving component can drive the polishing component to do linear reciprocating motion, moving to the first electrode, the second electrode, or removing the first electrode, the second electrode, when the cotton wheel of the polishing assembly moves to the first electrode, when the second electrode is opposite to the end face of the second electrode, the driving component drives the cotton wheel to rotate so as to polish the second electrode, it solves the problem that the existing welding device only can be polished manually, it reduces the working intensity of the worker and improves the working efficiency.