Welding device for valve machining

The utility model discloses a welding device for valve machining, belongs to the technical field of valve machining equipment, and aims at solving the problems that in the using process of an existing welding device for valve machining, valves of different sizes are inconvenient to fix, the application range is limited, and in the welding process, the welding efficiency is high. The problems that in the prior art, a flange plate at one end of a valve needs to be welded firstly, then a flange plate at the other end of the valve needs to be welded, synchronous one-time welding forming cannot be achieved, and the welding efficiency is greatly reduced are solved, and the welding device comprises a welding table, and the top end of the welding table is slidably connected with two symmetrically-arranged moving seats; according to the utility model, through the arrangement of the synchronous transmission assembly, the clamped and fixed valve and the two flange plates can be conveniently transmitted, so that the valv