Automatic leveling device for plate stacks with different thicknesses

An automatic leveling device for unequal-thickness plate stacks comprises a material sheet tray, an electric lifting device, a material stack height sensor and a control circuit, the material sheet tray is placed at the feeding end of a hot stamping production line, the electric lifting device is fixed to the material sheet tray, and the material stack height sensor is fixed to the material sheet tray. The unequal-thickness plates are stacked on the material sheet tray, the small-thickness ends of material sheets are placed on the top of the electric lifting device, the material stack height sensor is fixed to the material sheet tray through a sensor support and corresponds to the large-thickness ends of the material sheets, and the signal output end of the material stack height sensor is connected with the control circuit. And a servo motor of the electric lifting device is connected with the output end of the control circuit. The material stack height sensor is used for monitoring the height of the material