Coating machine for aluminum material processing

The utility model relates to a coating machine for aluminum material processing in the technical field of coating machines, which comprises a spraying box, two ends of the spraying box are respectively provided with a feed port and a discharge port, a clamping piece and a spraying assembly are arranged in the spraying box, the spraying assembly comprises an upper spraying pipe and a lower spraying pipe, a plurality of spray heads are fixed on the upper spraying pipe and the lower spraying pipe, and the spray heads are connected with the clamping piece. The upper spraying pipe is fixed to the top of the spraying box, an upper material guide pipe is fixed to the top wall of the spraying box, the upper material guide pipe communicates with the upper spraying pipe, and the upper material guide pipe is connected with an upper feeding pipe; the lower spraying pipe is fixed to the bottom of the spraying box, a lower material guiding pipe is fixed to the bottom wall of the spraying box, the lower material guiding pip