Plastic Recycling Machine

The main machine of plastic pelletizer is extruder, which consists of extrusion system, transmission system and heating and cooling system. Vigorously develop renewable resources and turn waste into treasure. The extrusion system includes a hopper and a head. The plastic is plasticized into a uniform melt through an extrusion system. Under the pressure established during this process, the head is continuously squeezed by the screw. Screw: is the most important part of extruder, it is directly related to the application range and productivity of extruder, made of high strength corrosion resistant alloy steel. Cylinder body: metal cylinder body, generally made of alloy steel with heat resistance, high compressive strength, wear resistance and corrosion resistance or composite steel pipe lined with alloy steel. The barrel and the screw cooperate, realize the plastic crushing, softening, melting, plasticizing, exhaust and compaction, to the forming system continuous and uniform delivery of rubber material. The length of the cylinder is usually 15 to 30 times its diameter so that the plastic can be adequately heated and plasticized. (3) hopper: the bottom of the hopper is equipped with a truncation device to adjust and cut off the material flow, and the side of the hopper is equipped with observation holes and calibration metering devices. (4) Head and mold: the head is composed of alloy steel inner sleeve and carbon steel sheath, and the head is equipped with a forming mold. The function of the head is to transform the rotating plastic melt into a parallel linear motion, which leads evenly and smoothly into the mold sleeve and gives the plastic the necessary molding pressure. The plastic is plasticized and compacted in the barrel, and the porous filter plate flows into the forming mold through the nose and neck along a certain flow channel. The mold core is properly matched with the mold sleeve to form an annular gap with a reduced cross section, so that the plastic melt forms a continuous and dense tubular coating around the core wire. In order to ensure that the plastic flow in the head is reasonable and eliminate the dead Angle of glue accumulation, shunting sleeve is often placed to eliminate the pressure fluctuation of plastic extrusion, as well as the pressure equalization ring. The machine head is also equipped with mold calibration and adjustment device, easy to adjust and correct the concentricity of mold core and mold sleeve. 2. Drive system Drive system is the drive screw, screw in the extrusion process required torque and speed, usually composed of motor, reducer and bearing.