According to the raw material fluidity orientation of the barrel and the angle of view in the middle of the extruder screw, the extruder can divide the barrel into an oblique angle barrel and an oblique angle barrel. The single-screw extruder uses the working pressure and shear stress caused by the rotation of the extruder screw to make the raw materials fully melted and evenly mixed, and shaped according to the material tube. Most plastic pelletizers can be divided into twin single screw extruders, single single screw extruders and the scarce multiple single screw extruders and non-single screw extruders.
The environmental protection and energy saving of the extruder can be divided into two parts: one is the driving force and the other is the heating part. Part of the driving force is environmentally friendly and energy-saving: most of them use soft starters, and the environmental-friendly and energy-saving method is to save the remaining kinetic energy of the motor. For example, the actual power of the motor is 50Hz. In fact, only 30Hz is enough to meet the manufacturing requirements in manufacturing, and unnecessary calorie consumption is in vain. If it is consumed, the soft starter will change the output power of the motor. The motor achieves the practical effect of environmental protection and energy saving. Environmental protection and energy saving of heating part: Most of the environmental protection and energy saving of heating part are the application of electromagnetic boilers, and the environmental protection and energy saving rate is about 30% to 70% of the electromagnetic coil of the old resistor.
work process
The plastic material enters the extruder from the silo and is transported forward according to the rotation of the screw of the extruder. In the whole process of the forward fitness exercise of the raw materials, the raw materials are heated by the barrel, and the cutting and shrinking effects of the extruder screw melt the raw materials, thereby completing the glass state, high elastic state and viscous flow. Transform.
Under the condition of filling and pressure, the raw material of viscous fluidity is based on the mold with a certain shape, and then according to the mold, it becomes a continuous body with a cross-section similar to the mold. Then it is refrigerated and shaped to produce a glass state, and then the parts to be produced and processed are obtained.
