Pretreatment device before extrusion molding of polyurethane resin composite material

The utility model relates to the technical field of composite material processing, in particular to a polyurethane resin composite material pre-treatment device before pultrusion, which comprises a treatment box and a crushing component for crushing filler, and the interior of the treatment box is divided into a crushing cavity and a mixing cavity. The grinding assembly comprises a grinding roller located in the grinding cavity and a grinding plate meshed with the grinding roller, the grinding plate is fixedly connected with the inner wall of the grinding cavity, a forward and reverse rotation motor is arranged on the outer wall of one side of the treatment box, and the output end of the forward and reverse rotation motor is connected with a rotating shaft which extends into the mixing cavity and is rotationally connected with the inner wall of the mixing cavity. According to the utility model, filler raw materials are pulverized under the mutual meshing action of the pressing teeth between the pulverizing ro