Hydraulic forging press apparatus and method for replacing its upper anvil

摘要

In the present invention, a hydraulic forging press apparatus and a method for replacing its upper anvil are provided. The hydraulic forging press device includes a moving beam, an upper anvil fixedly connected to the moving beam, a hydraulic cylinder for locking, a connecting pipe, a control valve provided on the connecting pipe, and a locking liquid fixedly connected to the moving beam. A hydraulic pressure source of the pressure cylinder is included, one end of the connecting pipe is connected to the hydraulic cylinder for locking, and the other end is connected to the hydraulic oil storage part of the hydraulic pressure driving source of the hydraulic cylinder for locking. The hydraulic drive source of the hydraulic cylinder for locking is fixed to the main hydraulic cylinder or the return hydraulic cylinder of the moving beam, and the hydraulic cylinder for locking is fixedly connected to the moving beam and locks between the upper anvil and the moving beam. And control the unlock. The hydraulic oil flows between the lock hydraulic cylinder and the hydraulic oil storage part of the hydraulic drive source of the lock hydraulic cylinder by the control valve and the connecting pipe. Compared with the prior art, the present invention can realize the interlock between the oil supply circuit of the locking device and the moving beam, simplify the hydraulic fluid supply circuit for locking, and improve the stability. .