Raw material conveying device for plastic extruder

The utility model is applicable to the technical field of plastic extrusion, and provides a raw material conveying device for a plastic extruder, which comprises a feeding component and a conveying component, the feeding component comprises a guide rail and rotatable threaded shafts, the guide rail is vertically arranged on a base, a plurality of threaded shafts rotationally connected with the base are arranged in the guide rail, a belt is connected among the threaded shafts, lifting seats are arranged on the threaded shafts in a penetrating manner, and the lifting seats are arranged on the guide rail; a sliding seat is arranged above the lifting seat in a sliding mode, a feeding box is arranged on the sliding seat, a bottom plate is rotatably arranged at the bottom of the feeding box, an electromagnet matched with the bottom plate is arranged at the bottom of the feeding box, a horizontal gear shaft is rotatably arranged on the top face of the lifting seat, and a second rack meshed with the gear shaft is arr