Fixed-star screw plastic extruder

Abstract

The invention discloses a fixed-star screw plastic extruder. The fixed-star screw plastic extruder comprises a main machine driving device, a feeding part, a feeding section, a fixed-star plasticizing section, a fixed-star vacuum section, a fixed-star pressurizing section, a filter, a metering pump and a clothes rack type mold, all of which are sequentially connected. The feeding section comprises a feeding screw barrel and a feeding screw. The fixed-star plasticizing section comprises a fixed-star plasticizing barrel, a fixed-star main screw and a fixed-star small screw engaged with the fixed-star main screw. The fixed-star vacuum section comprises a vacuum barrel and an exhaust small screw engaged with the fixed-star main screw extending from the fixed-star plasticizing section. The fixed-star pressurizing section comprises a pressurizing barrel, a pressurizing main screw and a pressurizing screw engaged with the pressurizing main screw. The main machine driving device drives the feeding screw, the fixed-star main screw and the pressurizing main screw to rotate. The fixed-star main screw drives the fixed-star small screw and the exhaust small screw to rotate. The pressurizing main screw drives the pressurizing screw to rotate. Materials are subjected to high-temperature shearing and extruding to be molten in the fixed-star pressurizing section, and water in the materials is fast gasified to be separated out and completely discharged through the fixed-star vacuum section.

Description

technical field [0001] The invention belongs to plastic product processing equipment, in particular to a casting extruder equipment. Background technology 8 [0002] Plastic has become an indispensable material for the manufacture of everyday objects, with so many uses and so many alternatives that we can't live without it. Any plastic will use extruder equipment when processing and molding. At present, the extrusion equipment commonly used in the production and processing of polyester PET, PETG, PP, PS and other materials in the existing technology is single-screw and twin-screw extruders. The production process The process is to dry the material first and then add it to a single-screw or twin-screw extruder for high-temperature extrusion molding, that is, to crystallize and dry first, and then to melt and extrude the casting sheet. The above-mentioned extrusion equipment has the following technical defects: 1. Many auxiliary machines are required, resulting in a large foo...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to aim at the defects of the prior art, to provide a star screw casting extruder which has the functions of drying, dehumidification and melt extrusion. Crystallization drying with the help of auxiliary equipment is conducive to improving production efficiency, saving energy, and more stable product quality

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