Compression device for leftover materials of packaging box

The utility model discloses a compression device for leftover materials of a packaging box, and relates to the field of packaging boxes. The compression device for the packaging box leftover materials comprises a supporting seat, a feeding port is formed in the front face of the supporting seat and communicates with a conveying belt, a collecting seat is slidably connected to the inner wall of the supporting seat, and two compression plates are slidably connected to the inner wall of the supporting seat and attached to each other. According to the compression device for the packaging box leftover materials, under the action of an extrusion assembly, a pushing seat moves downwards, so that the packaging box leftover materials are extruded, the packaging box leftover materials are compressed between two compression plates, and the packaging box leftover materials continuously enter a supporting seat and are extruded to fall on a collecting seat to be collected; the compression process is simple, meanwhile, manu