Hydraulic forging press apparatus and method of replacing the upper anvil

摘要

The present invention provides a hydraulic forging machine and a method for replacing an upper anvil block thereof. The hydraulic forging machine includes a movable beam, an upper anvil block fixedly connected to the movable beam, a locking hydraulic cylinder, a connecting pipe, a control valve provided on the connecting pipe and a hydraulic power source of the locking hydraulic cylinder that is fixedly connected to the movable beam. One end of the connecting pipe is connected to the locking hydraulic cylinder, the other end of the connecting pipe is connected to a pressurized oil chamber of the hydraulic power source of the locking hydraulic cylinder. The hydraulic power source of the locking hydraulic cylinder is a main hydraulic cylinder or a return hydraulic cylinder fixed to the movable beam. The locking hydraulic cylinder is fixedly connected to the movable beam for controlling locking and unlocking between the upper anvil block and the movable beam. Pressurized oil flows between the locking hydraulic cylinder and the pressurized oil chamber of the hydraulic power source of the locking hydraulic cylinder via the control valve and the connecting pipe. Compared to the prior art, the present invention not only allows synchronous movement of an oil supply circuit for the locking hydraulic cylinder with the movable beam and simplifies the oil supply circuit for the locking hydraulic cylinder, but also improves reliability.