Briefly describe the working principle of the plastic extruder,which is also one of the types of plastic machinery.According to the flow direction of the head and the angle between the centerline of the screw,the extruder can divide the head into a right-angle head and an oblique head.
The shell of the machine head is generally fixed on the fuselage with bolts.The mold inside the machine head contains a core seat,which is then fixed to the inlet port of the machine head with a nut.The core seat is also equipped with a The mold core,and the center of the mold core and the mold core seat have holes,which are used to pass the core wire.According to the different types of pressurization,the extrusion process can be divided into continuous extrusion and intermittent extrusion.
The equipment used in the former is a screw extruder,and the equipment in the latter is a plunger extruder.Here,screw extruders can be roughly classified into single-screw extruders and multi-screw extruders by virtue of the number of screws.
