| 摘要 |
PURPOSE:To improve workability by providing plural units of power generators constructed to transmit the change of the hydrostatic pressure generated by crank motion to a hydraulic press and operating respectively separately the units at the timings taken by a clutch and brake device. CONSTITUTION:A gas-operated intensifier 22 is connected to the mid-way of a piping 21 connecting a power generator B and a cylinder chamber 20 of an outer ram 19 and the power generator A is connected to an upper part 26 of an inner ram cylinder 25 via a piping 24. A pull-back cylinder 29 is communicated with a lower part 27 of the inner ram cylinder via a piping 30. A pull back bracket 31 is connected to the pull back piston rod and the inner ram 23. The power generators A, B are operated in the above-mentioned manner. |
