Hydraulic bending machine capable of quickly descending sliding block and preventing shaking and using method

The invention discloses an anti-shaking hydraulic bending machine capable of quickly descending a sliding block and a using method, and belongs to the technical field of bending machines. The hydraulic bending machine comprises a bending machine rack, a hydraulic oil cylinder is fixedly connected to the upper end of the bending machine rack, the hydraulic oil cylinder is connected with a lead screw, a pressing plate is installed on the lead screw, the sliding block is movably connected to the pressing plate, a guide assembly is further arranged on the bending machine rack, and the guide assembly comprises a straight guide rod and an inclined guide rod. The problem that the two ends of an existing bending machine are unbalanced and shake is solved, an inclined guide rod supports a sliding block to move, the stability of the two ends of a pressing plate is improved, transverse pressure is applied to the sliding block under the action of an energy storage spring, so that the sliding block has potential energy fo