plastic extruder

Abstract

The invention provides a plastic extruder, which can solve the problems of insufficient mixing of raw materials and high power consumption of a motor in a traditional plastic extruder, ensure extrusion quality and reduce production cost. The barrel is provided with a feeding device, and the external heating device is installed on the outer periphery of the barrel in sections, and the outer periphery of the screw is provided with helical blades extending in the axial direction. The screw in the feed section, the screw in the feed section is connected to the output shaft of the drive motor, one end of the screw in the discharge section is connected to the screw in the feed section, and the other end is connected to the extrusion die at the discharge port of the barrel, the screw in the discharge section is in the shape of Hollow cylindrical, the outer periphery of the screw in the feeding section is provided with helical blades extending in the axial direction, and the outer and inner peripheries of the hollow cylindrical screw in the discharging section are provided with spiral blades in the same direction as the outer periphery of the screw in the feeding section. The helical blade, the helical blade on the outer periphery of the screw rod in the feeding section is connected with the helical blade on the outer periphery of the screw rod in the discharging section.

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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