Box folding machine

The utility model relates to the technical field of manufacturing of paper boxes, cardboard boxes, envelope paper bags or cardboard bags, and discloses a box folding machine which comprises a main body, a dust cover is arranged on the main body, a sealing door is arranged on the dust cover, a supporting pipe penetrating into the dust cover is connected to the upper surface of the dust cover in a sliding mode, and a scrap collecting mechanism is arranged on the supporting pipe. The dust collecting mechanism comprises a positioning pipe, the positioning pipe is fixedly connected with the supporting pipe, the positioning pipe communicates with the interior of the supporting pipe, and the right end of the positioning pipe is fixedly connected with a hose. According to the box folding machine, air with soft flocks in the dust cover is filtered through a filtering plate in the filtering box, then the soft flocks are cleaned, manual cleaning is not needed, manpower is saved, and the working efficiency is improved. F