Metal plate bending device

The utility model relates to the technical field of metal plate bending equipment, and discloses a metal plate bending device which comprises a workbench, supporting frames are fixedly installed on the two sides of the top of the workbench, a fixing frame is fixedly connected to the tops of the supporting frames, and an air cylinder is fixedly installed in the middle of the top end of the fixing frame. A piston rod is movably connected to the bottom of the air cylinder in a sleeving mode, a top plate is fixedly connected to the bottom of the piston rod in a sleeving mode, a bending device is fixedly installed at the bottom of the piston rod, and telescopic rods are fixedly connected to the two sides of the bottom of the top plate. According to the metal plate bending device, metal plates are fixed to the movable blocks through cooperation of the fixed clamping blocks and the movable clamping blocks, the air cylinder is used for driving the bending device to bend the metal plates, meanwhile, the motor is used