Electric welding machine for optical instrument production

The utility model provides an electric welding machine for optical instrument production, which comprises an electric welding machine main body, a protection assembly is arranged on the electric welding machine main body, the protection assembly comprises a protection cylinder, and an extension cylinder is connected in the protection cylinder in a sliding manner. The protection cylinder is matched with the extension cylinder to protect the welding end of the electric welding machine body, so that heat loss can be reduced, the problem that the welding end needs to be continuously heated is solved, meanwhile, the situation that when adjacent parts are welded, the high-temperature welding end is likely to bake the adjacent parts, and the welding quality is improved can be avoided. And meanwhile, during welding, the supporting block is matched with the clamping plate to support the welding end, so that the problems that the welding end needs to be supported and the labor intensity is high during welding of worker