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    • 99. 发明公开
    • Double-acting hydraulic press
    • Doppeltwirkende,hydraulische Presse
    • EP1420169A2
    • 2004-05-19
    • EP03025768.7
    • 2003-11-11
    • KUBOTA IRON WORKS CO., LTD.
    • Yamanaka, Shigeaki, c/o Kabushiki Kaisha UKKazama, Takeshi, c/o Kabushiki Kaisha UK
    • F15B9/09B30B15/16
    • F15B11/0423B30B15/16F15B9/09F15B11/042F15B2211/20546F15B2211/30505F15B2211/30515F15B2211/30525F15B2211/3056F15B2211/3111F15B2211/327F15B2211/50581F15B2211/615F15B2211/6313F15B2211/6336F15B2211/6652F15B2211/7053F15B2211/7107F15B2211/7128F15B2211/75F15B2211/76
    • A double action oil hydraulic press is provided having a main cylinder (30) for actuating a slide (2) and a lower part forming cylinder (27) for actuating a lower part forming unit (12), wherein the operations of the cylinders are controlled through the combined control of the rotation of an oil hydraulic pump (52) of a power unit (31) and servo valves (34, 37) whereby the amount of operation oil that must be used is reduced. To this end, the press comprises a power unit (31) comprising a variable displacement oil hydraulic pump (52) adapted to be driven by an inverter motor (51); controllable servo valves (34, 37) provided in hydraulic circuits (33a, 33d) connecting the power unit (31) to the main cylinder (30) and to the lower part forming cylinder (27), respectively; servo controllers (41a, 41d) for controlling the servo valves (34, 37), respectively; cylinder pressure detecting sensors (39a, 39d) provided in the hydraulic circuits (33a, 33d), respectively; position detecting sensors (40a, 40b) for sensing positions of the slide (2) and the lower part forming unit (12), respectively; a control unit (32) for furnishing the inverter motor (51) of the power unit (31) and the servo controllers (41a, 41d) with control signals, respectively, and means whereby respective sensing signals of the cylinder pressure and position detecting sensors (39a, 39d, 40a, 40b) are fed back to the control unit (32).
    • 提供一种双作用油压机,其具有用于致动滑动件的主缸(30)和用于致动下部形成单元(12)的下部成形缸(27),其中缸的操作被控制 通过动力单元(31)的油压泵(52)和伺服阀(34,37)的旋转的组合控制,由此减少必须使用的操作油量。 为此,压力机包括动力单元(31),其包括适于由变频器马达(51)驱动的可变排量油压泵(52)。 分别设置在将功率单元(31)连接到主缸(30)和下部成形缸(27)的液压回路(33a,33d)中的可控伺服阀(34,37) 用于分别控制伺服阀(34,37)的伺服控制器(41a,41d) 分别设置在液压回路(33a,33d)中的缸压检测传感器(39a,39d) 位置检测传感器(40a,40b),分别用于检测滑块(2)和下部形成单元(12)的位置; 一个控制单元(32),用于分别提供具有控制信号的功率单元(31)的逆变器电动机(51)和伺服控制器(41a,41d)以及各自的气缸压力和位置检测传感器 (39a,39d,40a,40b)被反馈到控制单元(32)。