▎ 摘　　要

NOVELTY - A preparation device comprises symmetrically arranged supporting legs for supporting plate body away from ground, brushing component for brushing plate body, and coating component. The coating component comprises coating clamping frame which is U-shaped frame structure, provided with two opposite side plates, and driven by driving piece for two-dimensional movement. The side plates are uniformly connected with discharging pipe and brush hair. The brush hair moves back and forth along with brushing component to brush plate body. USE - The device is for preparing graphene board. ADVANTAGE - The coating method of the plate body is continuous in working process, only needs to keep a certain positive pressure supply during the coating process, after finishing coating the plate body, stopping the positive pressure supply and convenient operation. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of graphene board preparation device.