Melting section nine-piece spiral pyramid twin-screw applied to wire pipe high-speed extrusion line

The utility model relates to the technical field of extruders, in particular to a melting section nine-piece spiral pyramid twin screw applied to a line pipe high-speed extrusion line, which comprises two screw bodies and an adjusting assembly, each screw body comprises a feeding section, a melting section, a plasticizing section and an extrusion section, the feeding section, the melting section, the plasticizing section and the extrusion section are fixedly connected in sequence, the melting section is provided with nine screw flights, and the adjusting assembly is arranged on the screw flights. The adjusting assembly comprises a driving part, two moving blocks and two connecting shafts; the nine screw flights are arranged on the melting section, the plasticizing effect on raw materials can be improved, the two moving blocks are driven by the driving piece to be close to or far away from each other, the two moving blocks drive the two screw rods to move through the two connecting shafts respectively, and the