Automatic coding device for color box production

The utility model relates to the technical field of automatic coding devices for color box production, in particular to an automatic coding device for color box production, which comprises a case and a coding gun positioned on the rear side of the case, a suction fan is mounted on the right end face of the case, and an air inlet end on the left side of the suction fan penetrates through the right end face of the case. An air inlet is formed in the right end face of the machine box in a penetrating mode, a first mounting frame located on the outer side of the air inlet is arranged on the left end face of the machine box, and a protective net is fixedly connected to the interior of the first mounting frame; hot air in the case can be continuously pumped to the outside through the suction fan, meanwhile, external air can enter the case along with the air inlet, large impurities can be isolated to the right side of the protective net through the protective net, and when small dust passes through the protective ne