| 摘要 |
PCT No. PCT/JP97/04308 Sec. 371 Date Sep. 1, 1998 Sec. 102(e) Date Sep. 1, 1998 PCT Filed Nov. 26, 1997 PCT Pub. No. WO98/23438 PCT Pub. Date Jun. 4, 1998A support frame (14) is provided above a base (10), defining a working space (16) together with the support frame. An automatic die-replacing mechanism (24) is provided in the working space, for moving a selected one of a plurality of die units (78) to a predetermined working position. A support base table is provided with an elevating axle (18) for opening and closing the die unit located at the working position, and a drive mechanism section for moving the elevating axle up and down. The drive mechanism section has a pulse servomotor (38) and an oscillating-fulcrum mechanism (22) for transmitting a drive force to the elevating axle. The oscillating arm (46) of the oscillating-fulcrum mechanism has a fulcrum section supported by the support table, a power-point section supported by a shaft which is rotated by the pulse servomotor, and an application-point section coupled to the elevating axle.
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