Blade die hydraulic control mechanism and method

The invention discloses a blade die hydraulic control mechanism which comprises a mounting frame, an angle adjusting shaft is rotationally mounted on the lower side of the mounting frame, a blade die base is fixedly mounted on the surface of the angle adjusting shaft, a hydraulic assembly is arranged in the angle adjusting shaft, and the angle adjusting shaft is driven by the hydraulic assembly to rotate by a certain angle to achieve die replacement. A self-locking assembly is further installed on the installation frame, and locking of the angle adjusting shaft is achieved through the self-locking assembly. The mechanism drives the blade die holder to rotate to a horizontal, vertical or inclined state to be kept, die change between the horizontal blade die holder and the rotary tool magazine is more convenient, the original mode of sliding from the side face of the bending machine to change the die is changed, the mechanism is suitable for long blade dies and short blade dies, the rotary tool magazine arrange