초록

A complex pressing die apparatus having a plurality of upper and lower dies which are actuated by respective hydraulic cylinder devices which are located in a coaxial arrangement, respectively, in accordance with a predetermined sequence.

대표청구항 ▼

A complex pressing die apparatus comprising an upper frame having an upper die assembly movably mounted therein and a lower frame, in axial alignment with said upper frame and having a lower die assembly mounted therein, said upper die assembly movably mounted in said upper frame and said lower die

A complex pressing die apparatus comprising an upper frame having an upper die assembly movably mounted therein and a lower frame, in axial alignment with said upper frame and having a lower die assembly mounted therein, said upper die assembly movably mounted in said upper frame and said lower die assembly movably mounted in said lower frame being in axial, face-to-face alignment, each die of said upper die assembly and each die of said lower die assembly having a two-way hydraulic cylinder and piston for advancing and retracting each said die in one assembly toward and away from the die in the other assembly independent of the other dies in the one assembly and the other assembly, the piston of the two way hydraulic cylinder of each said die of said upper die assembly and the piston of the two way hydraulic cylinders of each said die of said lower die assembly being in axial alignment with the axis of said upper die assembly and said lower die assembly, respectively, said pistons being integral with said dies.