DIE CUSHION DEVICE FOR PRESS MACHINE
    2.
    发明公开
    DIE CUSHION DEVICE FOR PRESS MACHINE 有权
    压机用胶垫装置

    公开(公告)号:EP1882534A1

    公开(公告)日:2008-01-30

    申请号:EP06711787.9

    申请日:2006-01-17

    IPC分类号: B21D24/02

    摘要: A die cushion apparatus of a press machine in which a discharge opening of a fluid hydraulic pump/motor is directly connected to a pressure chamber on a cushion pressure production side of a fluid hydraulic cylinder and the torque of a rotating shaft of the fluid hydraulic pump/motor is controlled by an electric motor to control a pressure (die cushion pressure) of the pressure chamber on the cushion pressure production side. It is therefore possible to control the die cushion pressure with excellent responsiveness with respect to a die cushion pressure command and prevent occurrence of a surge pressure. The die cushion apparatus also has excellent energy efficiency since energy required for a die cushioning action that a cushion pad receives when effecting die cushioning of a press machine is regenerated as electrical energy through the fluid hydraulic cylinder, fluid hydraulic pump/motor, and electric motor.

    摘要翻译: 一种冲压机的模具缓冲装置,其中流体液压泵/马达的排出口直接连接到流体液压缸的缓冲压力产生侧上的压力室,并且流体液压泵的旋转轴的扭矩 /马达由电动机控制以控制缓冲压力产生侧上的压力室的压力(模具缓冲压力)。 因此,能够以对模具缓冲压力指令的响应性优异的方式控制模具缓冲压力,并且能够防止产生冲击压力。 模具缓冲装置还具有优异的能量效率,因为缓冲垫在实现冲压机的缓冲时接收的模具缓冲作用所需的能量通过流体液压缸,流体液压泵/马达和电动机再生为电能 。