(1) Screw: it is the most important part of the plastic granulator extruder, which is directly related to the application planning and productivity of the extruder, made of high strength corrosion resistant alloy steel.
(2) Plastic granulator drum: is a metal cylinder, generally with heat resistance, high compressive strength, quiet wear resistance, corrosion resistance of alloy steel or alloy steel lined composite steel pipe. The cylinder and the screw cooperate to complete the damage, softening, melting, plasticizing, exhaust and compaction of the plastic, and continuously and uniformly transport the plastic material to the molding system. Generally, the length of the cylinder is 15 ~ 30 times of its diameter, so that the plastic can be fully heated and fully plasticized.
(3) Hopper: the bottom of the hopper is equipped with blocking equipment to adjust and block the material flow, and the side of the hopper is equipped with viewing hole and calibration and measurement equipment.
(4) Machine head and mold: the machine head is composed of alloy steel inner sleeve and carbon steel jacket, and the machine head is equipped with forming mold. The role of the head is to transform the rotating plastic melt into parallel linear motion, uniformly and smoothly into the die sleeve, and give the plastic with the necessary molding pressure. Plastic in the plastic back granulator barrel plasticizing compaction, through the porous filter plate along a certain flow channel through the machine head neck into the machine head molding mold, mold core and mold sleeve appropriate cooperation, form a section of the annular gap, the plastic melt around the core line to form a continuous dense tubular coating layer. In order to ensure that the plastic flow channel in the machine head is reasonable and eliminate the dead Angle of plastic accumulation, a shunt sleeve is often arranged. In order to eliminate the unstable pressure of plastic extrusion, a pressure equalizing ring is also arranged. The machine head is also equipped with mold correction and adjustment equipment, easy to adjust and correct the concentricity of mold core and mold sleeve.
