Rotary extruders are widely used in plastic processing and other fields, and their stable rotational speed is crucial for producing high-quality plastic products. However, in actual use, there may be situations where the rotational speed is unstable, which not only affects production efficiency but may also cause damage to product quality. Next, let's analyze the possible reasons for the unstable speed of the rotary extruder.
Firstly, electrical system issues are one of the common causes of unstable rotational speed. The speed control of the rotary extruder relies on the motor and drive control system. If the motor itself malfunctions, such as short circuits, open circuits, or aging of the motor winding, it may lead to insufficient or unstable power output of the motor, resulting in speed fluctuations. In addition, if the controller, inverter, and other components in the drive control system have parameter setting errors, poor contacts, or internal circuit damage, they may not be able to accurately control the motor speed, resulting in unstable speed.
Secondly, faults in the mechanical transmission system may also cause unstable rotational speed. Equipment usually transmits the power of the motor to the screw through transmission methods such as belts, gears, or chains. If the belt or chain is too loose or too tight, it will cause slipping and make the speed unstable; The wear or damage of gears can also lead to unstable transmission, affecting the stability of speed. In addition, looseness, deformation or damage of the coupling may prevent the torque of the motor from being effectively transmitted to the screw, resulting in instability of power and speed.
Furthermore, changes in load can also affect the rotational speed of the rotary extruder. During the processing, factors such as hardness, viscosity, and feeding speed of plastic materials may change, leading to unstable load on the extruder. When the load is too large, the motor may experience a decrease in speed due to overload; When the load is too small, the motor may experience an increase in speed due to no-load or light load, resulting in unstable speed.
The unstable rotational speed of a rotary extruder is a complex problem that may be caused by various reasons. Only by accurately analyzing and identifying specific causes, and taking corresponding solutions, can the stable operation of equipment and product quality be ensured.
