To provide an apparatus of hydraulic forming of superposed sheets with which the productivity is improved despite simple constitution of the apparatus.
The apparatus of hydraulic forming of the superposed sheets is provided with: a pair of upper and lower dies (30, 35) which clamps a preformed body in which at least two sheets are superposed and in the part of which an injection hole is formed; a die clamping machine (20) which moves a pair of dies vertically; a hydraulic pressure injecting means (62) which injects a forming medium into the preformed body from the injection hole; and a high-pressure cylinder (67) which imparts high pressure to the forming medium. A low-pressure cylinder (33) which is operated in interlocking with the vertical movement of the dies is provided in the die clamping machine. Further, a hydraulic circuit (50) for connecting the low-pressure cylinder to the hydraulic pressure injecting means is provided.
COPYRIGHT: (C)2005,JPO&NCIPI
Sakurai Hiroshi
Kenji Kanamori
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| JP2000246361A | ||||
| JP2003072658A | ||||
| JP2002035852A |
Atsushi Nogami
Yasuo Nara
Etsuko Saito
Katsuyuki Utani
Toshifumi Fujii