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DIE CUSHION DEVICE

机译:模具垫装置

摘要

A die cushion device includes: a hydraulic cylinder (10) that vertically moves a cushion pad (14); a hydraulic pump (P) that supplies hydraulic oil from an oil tank (T) to the hydraulic cylinder (10); a relief valve (20) that returns hydraulic oil discharged from the hydraulic cylinder (10), to the oil tank (T); a pressure sensor (PS) that detects a hydraulic oil pressure, which is a die cushion pressure of the hydraulic cylinder (10); and a control device (40) that controls a flow rate and a pressure of hydraulic oil supplied from the hydraulic pump (P) to the hydraulic cylinder (10). The control device controls the number of rotations of the hydraulic pump (P) such that the hydraulic oil pressure detected by the pressure sensor (PS) reaches a die cushion pressure command value, and when a hydraulic oil pressure detected by the pressure sensor is equal to or higher than a set pressure of the relief valve (20), the control device (40) reversely rotates the hydraulic pump (P).
机译:模具垫装置包括:垂直移动垫垫(14)的液压缸(10);一种液压泵(P),其从油箱(T)向液压缸(10)提供液压油;返回从液压缸(10)排出的液压油的释放阀(20)到油箱(T);一种检测液压油压力的压力传感器(PS),其是液压缸(10)的模具垫压力;和控制装置(40),其控制从液压泵(P)供应到液压缸(10)供应的液压油的流量和压力。控制装置控制液压泵(P)的旋转次数,使得由压力传感器(PS)检测的液压油压力达到模具垫压力指令值,并且当压力传感器检测到的液压油压时到或高于释放阀(20)的设定压力,控制装置(40)反向旋转液压泵(P)。

著录项

  • 公开/公告号EP3845324A1

    专利类型

  • 公开/公告日2021-07-07

    原文格式PDF

  • 申请/专利权人 DAIKIN INDUSTRIES LTD.;

    申请/专利号EP20190854535

  • 发明设计人 KANBAYASHI ATSUHIRO;NAKAMURA HIROKAZU;

    申请日2019-08-23

  • 分类号B21D24/02;B30B15/02;

  • 国家 EP

  • 入库时间 2022-08-24 19:53:35

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