河北省沧洲市锻压机械厂承担的J A21-40Z_1型开式压力机是在JA21-40Z型开式压力机的基础上改进的。在机器的传动轴上装有电磁摩擦离合器机构。当处于危险状态时,首先由光电保护器发出信号,控制电磁离合器,切断动力输入,在刚性离合器不脱键的情况下,滑块紧急停车,从而保证安全。当危险信号消失后,电磁离合器结合,继续工 Hebei Cangzhou Forging Machinery Factory commitment J A21-40Z_1 type open press is JA21-40Z type open press on the basis of improvement. In the machine’s transmission shaft equipped with electromagnetic friction clutch mechanism. When in a dangerous state, first by the photoelectric protector to send a signal to control the electromagnetic clutch, cut off the power input, the rigid clutch does not disconnect the case, the slider emergency stop, thus ensuring safety. When the danger signal disappears, the electromagnetic clutch is combined and the work continues