Auxiliary welding device for valve machining

The utility model relates to the technical field of valve processing, and provides an auxiliary welding device for valve processing, which comprises a base and a mounting plate, the top of the base is provided with a movable plate, the mounting plate is fixedly connected above the base, the bottom of the mounting plate is provided with a fixed rod, the bottom of the fixed rod is provided with a limiting ball, and the limiting ball is fixedly connected with the movable plate. An air cylinder is fixedly connected to the side, away from the movable plate, of the top of the base, and the output end of the air cylinder is fixedly connected with the mounting plate. By means of the technical scheme, the welding problem in the prior art is solved, compared with a traditional device, the valve welding device can adapt to valves of different sizes in the valve welding process, the valves can be fixed, and therefore the welding work efficiency is improved, and convenience and rapidness are achieved. 本实用新型涉及阀门加工技术领域，提出了一