Introduction of Extruder Transmission System

The extruder transmission system usually consists of a motor, a reduction gearbox and bearings.

During the extrusion process, the screw speed must be stable and cannot change with the change of screw load, so as to maintain the uniform quality of the obtained product.However, in different situations, the screw speed must be variable so that one device can extrude different plastics or different products.Therefore, this part generally uses AC commutator motors, DC motors and other devices to achieve stepless speed change, and the general screw speed is 10~100 rpm.

The function of the extruder transmission system is to drive the screw and provide the torque and speed required by the screw during the extrusion process. It is usually composed of a motor, a reducer and bearings.Under the premise of basically the same structure, the manufacturing cost of the reducer is roughly proportional to its size and weight. Because the size and weight of the reducer are large, it means that more materials are consumed during manufacturing, and the bearings used are also relatively large, which increases the manufacturing cost.

For extruders with the same screw diameter, high-speed and high-efficiency extruders consume more energy than conventional extruders. The motor power is doubled, and the reducer frame size must be increased accordingly.However, a high screw speed means a low reduction ratio. For a reducer of the same size, a reducer with a low reduction ratio has a larger gear modulus than a reducer with a large reduction ratio, and the reducer's ability to withstand loads is also increased.Therefore, the increase in the volume and weight of the reducer is not linearly proportional to the increase in motor power. If the extrusion volume is used as the denominator and divided by the weight of the reducer, the high-speed and high-efficiency extruder will have a smaller number and the ordinary extruder will have a larger number. In terms of unit output, the motor power of the high-speed and high-efficiency extruder is small and the weight of the reducer is small, which means that the unit output machine manufacturing cost of the high-speed and high-efficiency extruder is lower than that of the ordinary extruder.

The extruder transmission system usually consists of a motor, a reduction gearbox and bearings.During the extrusion process, the screw speed must be stable and cannot change with the change of screw load, so as to maintain the uniform quality of the obtained product.However, in different occasions, the screw needs to be variable speed to achieve the requirement that one device can extrude different plastics or different products. Therefore, this part generally uses AC commutator motors, DC motors and other devices to achieve stepless speed change. The general screw speed is 10~100 rpm.

The function of the extruder transmission system is to drive the screw and provide the torque and speed required by the screw during the extrusion process. It is usually composed of a motor, a reducer and bearings.Under the premise of basically the same structure, the manufacturing cost of the reducer is roughly proportional to its size and weight. Because the size and weight of the reducer are large, it means that more materials are consumed during manufacturing, and the bearings used are also relatively large, which increases the manufacturing cost.

For extruders with the same screw diameter, high-speed and high-efficiency extruders consume more energy than conventional extruders. The motor power must be doubled, and the reducer frame size must be increased accordingly. However, a high screw speed means a low reduction ratio. For reducers of the same size, the gear module of a low reduction ratio is increased compared to a large reduction ratio, and the reducer's ability to bear loads is also increased. Therefore, the increase in the volume and weight of the reducer is not linearly proportional to the increase in motor power. If the extrusion volume is used as the denominator and divided by the weight of the reducer, the high-speed and high-efficiency extruder has a smaller number and the ordinary extruder has a larger number. In terms of unit output, the motor power of the high-speed and high-efficiency extruder is small and the reducer weight is small, which means that the unit output machine manufacturing cost of the high-speed and high-efficiency extruder is lower than that of the ordinary extruder.