Clear useless machine of cardboard

The utility model discloses a clear useless machine of cardboard, include: the device is seen off to cardboard access device, the clear useless device of brush roll and cardboard, be provided with the device useless clearly of blowing on the cardboard access device, the device useless clearly of blowing includes the blow gun, the clear useless device of brush roll is the brush roller under rotating a plurality of horizontally upper hair brush rolls of setting up and rotate a plurality of horizontallies that set up, and upper hair brush roll and brush roller down be crisscross to be set up and turn to opposite, is provided with the brush in the play paper end level of the clear useless device of brush roll and arranges. The cardboard gets into clear useless machine back, realize by the blow gun earlier preliminary clear useless, again by upper hair brush roll and brush roller down with the waste material ejecting, come off, last being arranged by the brush will attach that the waste material that does not fall