Extrusion system of plastic scrap granulator
The main machine of the plastic scrap granulator structure is the extruder, composed of an extrusion system, transmission system, and heating and cooling system. The extrusion system includes a screw, barrel, feeding port, and mold head. Plastic is through the extrusion system and plasticized into a homogeneous melt and in the process of establishing the working pressure, by the screw continuous extrusion head.
Screw: The main component of the plastic scrap granulator, is related to the use of the plastic scrap granulator category and productivity, made of high-strength corrosion-resistant alloy steel.
Barrel: It is a kind of metal material tube, usually made of alloy steel with high-temperature resistance, high compression strength, strong wear-resisting, and corrosion-resisting. The barrel and the screw cooperate to achieve the crushing, softening, melting, plasticizing, exhausting, and compacting of plastics, and to the forming system for continuous and proportional plastic delivery. Generally, the length of the barrel is 18:1 of its diameter, so the plastic can be thoroughly heated and wholly plasticized as a principle.
Feeding port: The bottom of the feeding port of the plastic film recycling machine is equipped with a cut-off device to regulate and cut off the flow of material, and the side of the hopper is equipped with a sight hole and a calibrated measuring device.
Mold head: The mold head of a plastic scrap granulator consists of an alloy steel inner sleeve and a carbon structural steel outer sleeve. The role of the mold head is to automatically rotate the movement of the plastic melt into a parallel uniform linear motion, proportional and stable introduction into the mold set, and give the plastic the necessary pressure of the molding
Transmission system of plastic film recycling machine
The function of transmission system is to drive the screw and supply the torque and speed required by the screw in the extrusion process. It usually consists of electric motor, reducer and bearing.
Heating and cooling device of plastic recycling pellet machine
Heating and cooling is a necessary condition for the plastic extrusion process to be carried out.
- Nowadays, the plastic recycling pellet machine usually uses electromagnetic heating. Heating device from the outside to heat the plastic in the barrel, so that it warms up to reach the temperature required for the operation.
- The cooling device is set up to ensure that the plastic is in the temperature range required by the process. The purpose is to avoid too high a temperature to make the plastic decomposition, scorching, or shaping challenging.