Retired fan blade recovery device and method based on waste reduction

The invention provides a waste reduction-based retired fan blade recovery device and method, and belongs to the technical field of retired fan blade recovery. An auxiliary plate unit; truncating the unit; and the stripping unit used for scraping the composite material on the surface of the fan blade in a rolling mode is arranged on the side, away from the truncation unit, of the slitting unit. The fan blade with the cambered surface is rolled and flattened through downward pressing of the rolling plate on the downward pressing driving unit and the semi-open pressing plate on the other side, and the rotating scraping roller arranged on one side of the rolling plate enables a composite material layer of the fan blade to be further moved, extruded and dispersed in the rotating extrusion process and in the movement process of the connecting plate along the convex rail, so that the fan blade with the cambered surface is rolled and flattened. And the scraper on one side of the scraping roller enables the composite