The principle of plastic granulator
Jun 22, 2020
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The main body of the plastic granulator is an extruder system, which consists of an extrusion system, a transmission system and a heating and cooling system.
Extrusion system: The extrusion system includes screw, barrel, hopper, die, and die. The plastic is plasticized into a uniform melt by the extrusion system, and is continuously extruded by the screw under the pressure established in the process Head out.
1. Screw: It is the most important part of the extruder. It is directly related to the application range and production efficiency of the extruder. It is made of high-strength corrosion-resistant alloy steel.
2. Barrel: It is a metal seamless tube, generally made of alloy steel or composite steel pipe lined with alloy steel lined with heat resistance, high compressive strength, strong durability, corrosion resistance. Achieve crushing, softening, melting, plasticizing, venting and compacting of plastics, and continuously and uniformly deliver rubber to the molding system. Generally, the length of the barrel is 18:1 in this diameter, so that the plastic is fully heated and fully plasticized.
3. Hopper: A cut-off device is inserted at the bottom of the hopper to adjust the brake and cut off the material flow. The side of the hopper is aligned with the sight hole and the calibration metering device.
4. Machine head and mold: The machine head is composed of an alloy steel inner sleeve and a carbon steel outer sleeve, and the machine head is embedded with a molding die.
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