| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power feeding device which is unnecessary to attach a feeder cable and the stability of operation of which is secured by feeding power to a bolster without mounting a power source and an antenna like radio control. Ž<P>SOLUTION: The bolsters B1-B3 are made replaceable through rails 1 for laterally travelling and rails 2 for longitudinally travelling between presses M1, M2 and bolster standby areas E1, E2. A feeder trolley 7 for laterally travelling and a feeder trolley 8 for longitudinally travelling are provided movably back and forth along the rails 1, 2 and also collectors 5 for laterally travelling and collectors 6 for longitudinally travelling are provided on each of bolsters B1-B3. When the bolsters B1-B3 are travelled along the rail 1 or 2, the power is fed to the sides of the bolsters B1-B3 through the feeder trolley 7 or 8 and the collector 5 or 6. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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