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How Does Plastic Granulator Work

The main engine of Yongzhi Plastic Granulator is extruder, which consists of extrusion system, transmission system and heating cooling system. We will energetically develop renewable resources and turn them into treasures.
The extrusion system of the system includes hopper, head and plastic, which is molded into a uniform melt by squeezing the system, and under the pressure of this process, the screw continuously extruded the head.

Screw: it is the main component of extruder. It is directly related to the application range and productivity of extruder. It is made of high strength corrosion-resistant alloy steel.
The cylinder: it is a metal cylinder, which is made of composite steel tube of alloy steel or lining alloy steel with high heat resistance, high compressive strength, strong abrasion resistance, corrosion resistance. The cylinder and screw are combined to realize the crushing, softening, melting, plasticization, exhaust and compaction of plastic, and continuously and uniformly conveying the adhesive to the molding system. The length of the drum is 15 ~ 30 times its diameter, so that the plastic can be fully heated and fully plasticided into principle.
The hopper is equipped with a truncated device at the bottom of the hopper to adjust and cut off the flow of material, and the side of the hopper is equipped with a visual hole and calibration measuring device.
Plastic Granulator head and die: the machine head is made of alloy steel inner sleeve and carbon steel jacket, and the mould is fitted in the head. The function of the machine head is to transform the plastic melt of the rotary movement into parallel linear motion, evenly and smoothly into the mould sleeve, and to give the plastic the necessary molding pressure. Plastic plasticizing compaction in the barrel, is approved by the flow of porous filter plate along a certain head neck into the head forming die, die core die set appropriate coordination, the formation of cross section and decreases the annular space, make the plastic melt around the conductor to form a continuous solid tubular cladding layer. In order to ensure the reasonable plastic flow path in the head of the machine and eliminate the dead Angle of the deposited plastic, there are often shunt sleeve, which can be used to eliminate the pressure fluctuation of the plastic extrusion. The machine head is also equipped with mould calibration and adjustment device for adjusting and correcting the concentricity of die core and mould sleeve. 2. The driving system is designed to drive the screw and supply the torque and speed of the screw during the extrusion process, usually consisting of motors, reducers and bearings.
Heating and cooling of a heating cooling device is a necessary condition for the process of plastic extrusion.

Yongzhi Plastic Granulator usually uses electric heating, which is divided into resistance heating and induction heating. The heating plate is installed in the body, neck and nose. The heating device is heated by external heating cylinder to meet the temperature required for process operation.
The cooling device is designed to ensure that the plastic is at the temperature range of the process requirements. Specifically, to exclude the excess heat generated by the shear friction of the screw rotation, to avoid the temperature too high for the plastic decomposition, coke or finalizing difficulties. Cylinder cooling is divided into two types: water cooling and air cooling. Generally, small and medium sized extruding machines are suitable for air cooling, while large ones are mainly cooled by water cooling or two forms. The main purpose of screw cooling is to increase the solid conveying rate of the material, stabilize the volume of the material, and improve the product quality. However, the cooling at the hopper is designed to strengthen the transport of solid materials to prevent the heating of the plastic particles from sticking to the mouth of the material and to ensure the normal operation of the transmission part.

Category: Granulator F&Q

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