What are the components of an extruder?
An extruder in which an air vent is disposed at the center of an exhaust extruder to allow removal of air and volatiles from the processed plastic. The main machine of plastic extruder is plastic extruderIt consists of an extrusion system, a drive system and a heating and cooling system. 1. extrusion system extrusion system includes screw, cylinder extrusion die head, extrusion die head, molding parts of the extruder. Also known as extrusion die, extrusion die. The utility model has the function that the plastic melt from the extruder barrel is well distributed in the die runner so as to be extruded and formed from the die at a uniform speed. The forming action of an extrusion die is in the process of complete extrusion (see plastics processing). A plastic extruder consists of an extrusion system, a drive system and a heating and cooling system. The classification system of extrusion system includes 1. extrusion screw, barrel, hopper, head, and mould, plastic extrusion system by plasticizing evenly into the melt, the establishment of Liu Hesheng basic information name in this process and Liu Hesheng taught: - professional engineeringControl science and EngineeringJob: in gender: Male College: College of mechanical and power engineering representative paper: melt rotating twin screw extruder in conveying flow solving teaching: research direction: mainly engaged in polymer material processingLinear low density polyethylene (LLDPE) linear low density polyethylene (LLDPE) linear low density polyethylene is structurally different from the generallow density polyethylene
The driving system of an extruder is to drive the screw, providing the torque and speed required by the screw in the extrusion process, usually consisting of an electric motor, a reducer, and a bearing.3. heating and cooling device for extruderHeating and cooling are necessary conditions for the process of making a plastic extruder. It includes two aspects:(1) now host extruder is usually divided into electric heating, resistance heating and induction heating, heating installed in the fuselage, neck, head of each part. The heating device heats the plastic in the outer barrel to increase the temperature required for the process operation.(2) the cooling device is designed to ensure that the plastic is in the temperature range required by the process. Specifically, to eliminate the excess heat generated by the shear friction of the screw rotation, in order to avoid the temperature is too high, so that plastic decomposition, coke burning or stereotypes difficult. Cylinder cooling water cooling and air cooling is divided into two kinds, small and medium sized extrusion machine adopts air cooling is more appropriate, large use more water or two kinds of combined cooling; cooling water cooling screw mainly adopts the center, the purpose is to increase the solids conveying rate, stable glue volume, and improve product quality; but in the cooling hopper one is, in order to strengthen transport of solid material, prevent warming plastic sticky jam outlet, two is to ensure the normal work of the transmission part.
