The utility model discloses an automatic
welding combined die for a
fire extinguisher cylinder, which relates to the technical field of dies, and comprises a fixed table, a movable table, four groups of guide rods, a cylinder I and a cylinder II, two groups of fixed plates are fixedly mounted at the top of the movable table, and two groups of limiting rods are mounted in the two groups of fixed plates in a penetrating manner; an upper limiting seat is arranged at one ends of the two sets of limiting rods in a penetrating mode, and a lower limiting seat is arranged at the other ends of the two sets of limiting rods in a penetrating mode. Through the arrangement of the upper limiting base, the lower limiting base and the two sets of second air cylinders, one-time adjustment and clamping of a
bottle opening, an upper end socket shell, a
barrel and a lower end socket shell can be achieved, then the second air cylinders jack up and send the
bottle opening, the upper end socket shell, the
barrel and the lower end socket shell to the
welding platform, follow-up one-time
welding is conveniently completed, multiple times of alignment are not needed in the
welding process, and the welding efficiency is improved. Therefore, the welding error is reduced, the welding quality is improved, the consistency of welding seams is ensured, and the sealing performance and the structural strength of the
fire extinguisher cylinder are further ensured.