| 摘要 |
PROBLEM TO BE SOLVED: To operate under a stabilized knock out load and to reduce noise and energy by mechanically linking both ends of knock out arm fixed at the midway with a knock out flock to an actuating source. SOLUTION: A knock out block 19 is slidably arranged to a cylindrical guide rail 17 through plural intermediate liners 18. The lower end of the knock out block 19 is connected to a knock out arm 23 arranged as crossing at the center part of a bed 2. Both ends of the knock out arm 23 are engaged turnably to respective one end of piston rods 25, 251 of double action type hydraulic cylinders 24, 241 through clevises 26, 261. The double actin type hydraulic cylinders 24, 241 are operated while subjecting to pressure control by a variable volume type hydraulic pump in synchronizing left/right. Further, a proportional pressure control valve is arranged to the discharge circuit of the hydraulic pump, an oil volume is linked to the motion of a press machine.
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