Plastic extruder

Abstract

The invention provides a plastic extruder, which can solve the problems that a traditional plastic extruder cannot stir raw materials sufficiently, and the power consumption of a motor is large. With the plastic extruder, the extrusion quality is ensured, and the production cost is reduced. A feeding device is arranged on a machine barrel; an external heating device is arranged on the periphery of the machine barrel in sections; screw blades extending along the axial direction is arranged on the periphery of a screw. The plastic extruder is characterized in that the screw comprises a feeding section screw rod and a discharge section screw rod connected with each other in the axial connection; the feeding section screw rod is coupled to an output shaft of a drive motor; one end of the discharge section screw rod is connected with the feeding section screw rod while the other end of the discharge section screw rod is connected with an extrusion die of the discharge hole section of the machine barrel; the discharge section screw rod is in the shape of a hollow barrel; a screw blade extending along the axial direction is arranged on the outer periphery of the feeding section screw rod; screw blades which are in the same direction as the screw blade at the outer periphery of the feeding section screw rod are arranged on the outer periphery and the inner periphery of the hollow barrel-shaped discharge section screw rod; the screw blade at the outer periphery of the feeding section screw rod and the screw blade at the outer periphery of the discharge section screw rod are connected to form a whole body.

Description

technical field [0001] The invention relates to the field of plastic extruder manufacturing, in particular to a plastic extruder. Background technique [0002] Traditional plastic extruders generally adopt a single-screw mixing and conveying mechanism. The single screw is installed in the barrel, and the screw in the feeding section of the motor rotates. Stirring and horizontal conveying are carried out, and the heating device installed on the outer periphery of the barrel continuously heats the raw materials in the barrel, and the heated and softened raw materials are extruded through the extrusion die at the outlet of the barrel. The mixing of the raw materials by the screw is not sufficient, and the heating device on the outer periphery of the barrel has the problem of uneven heating of the raw materials and poor heating effect, which affects the speed and quality of extrusion molding. In order to solve the defects of the above-mentioned traditional plastic extruders, a ...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides a plastic extruder, which can not only solve the problems of insufficient mixing of raw materials and high power consumption of the motor in traditional plastic extruders, but also fully heat and soften the raw materials, ensure extrusion quality, and reduce production costs. cost

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