Steel sheet clamping device

The utility model belongs to the technical field of clamping devices, and particularly discloses a steel sheet clamping device which comprises a mounting plate, the mounting plate is fixedly connected with an upper clamping plate, the upper clamping plate is matched with a lower clamping plate, the lower clamping plate is fixedly connected with one end of a bevel pulling plate, and the bevel pulling plate is rotationally connected to the mounting plate through a rotating shaft. The other end of the bevel pulling plate is hinged to one end of a flat-angle pulling plate, the other end of the flat-angle pulling plate is hinged to a sliding plate, and the sliding plate is slidably connected to the mounting plate. Through transmission cooperation of the bevel pulling plate, the flat angle pulling plate and the sliding plate and cooperation with work of the air cylinder, opening and closing cooperation of the lower clamping plate and the upper clamping plate is achieved, and therefore the steel sheet can be clamped