Basic components of waste plastic pellet machine

The extrusion system of the main body of the waste plastic pellet machine, that is, the extruder, includes a screw, a barrel, a hopper, ahead, and a mold. The plastic is plasticized into a uniform melt through the extrusion system, and under the pressure established in this process, it Is continuously extruded by the screw.

(1) Screw: The most important part of the extruder of waste plastic pellet machine. It is directly related to the application range and productivity of the extruder. It is made of high-strength and corrosion-resistant alloy steel.

(2) Barrel: It is a metal cylinder, which is generally made of alloy steel or composite steel pipe lined with alloy steel that is heat-resistant, high compressive strength, strong, wear-resistant and corrosion-resistant. The barrel cooperates with the screw to achieve the crushing, softening, melting, plasticizing, venting and compacting of the plastic, and continuously and uniformly conveys the rubber to the molding system. Generally, the length of the barrel is 15 to 30 times its diameter. The principle is to make the plastic fully heated and fully plasticized.

(3) Hopper: The bottom of the hopper is equipped with a cutting device to adjust and cut off the material flow. The side of the hopper is equipped with a sight hole and a calibration metering device.

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