Internal expanded fluid forming method

Abstract

An internal bulging fluid forming method is provided, the device includes a cylinder, a piston, an outer sealing ring, a downward-pressing cavity and a connecting mechanism; an interior of the cylinder is filled with a fluid medium, and a plurality of outer sealing rings are assembled between the cylinder and the piston; the piston is processed with a central through hole; the center of the downward-pressing cavity is processed with a cavity, and a mold is mounted in the cavity; the connecting mechanism is arranged between the piston and the downward-pressing cavity. The central through hole is selectively assembled with a pressed piston, and a plurality of inner seal rings are assembled between the central through hole and the pressed piston. A top of the pressed piston is processed with a shape that matches the mold.

Dependencies are inferred from the claim text.