Extruder for producing plasticized modified nylon 12 granules for automobile pipelines

The utility model discloses an extruder for producing plasticized modified nylon 12 granules for an automobile pipeline. The extruder comprises a machine barrel and two mutually meshed screw rods, the machine barrel and the screw rod are sequentially divided into a material conveying and melting section, a vacuum exhaust section, a mixing section and a compaction conveying section. And thread elements of the material conveying and melting section, the vacuum exhaust section, the mixing section and the compaction conveying section of the screw rod are specially arranged. A vacuum port is formed in the vacuum exhaust section, and a liquid filling port is formed in the mixing section. The problem of more plasticizer loss in the production process is improved, the plasticizer entering the matrix is close to an actual liquid scale set value, the numerical value is stable, the plasticizer is uniformly dispersed, the reliability and the stability of the product quality are better, the production cost can be reduced,