Compared with other models, the twin-screw extruder has an obvious feature that is different in the transmission system. The twin-screw extruder requires the power to be evenly distributed to the two screws in a confined space. This is the torque distribution technique. Different torque distribution skills determine the carrying capacity of the gearbox and even directly affect the life and function of the whole machine.
Among the many torque distribution technologies, the two high torque distribution technologies represented by the bilateral symmetrical drive type are the most widely used, and the traditional parallel three-axis gearboxes with general torque are still the main force in China.
Traditional parallel three-axis torque distribution technology The traditional parallel three-axis torque distribution technology is a sophisticated twin-screw extruder transmission technology. Most of the gearboxes of foreign twin-screw extruders use this structure in the early stage. As shown in the traditional parallel three-axis transmission principle diagram, the power from the motor is evenly distributed to the A and B output shafts in parallel.
means that the A and B shafts each bear 50% of the torque. Because of the constraint of the center distance of the A and B axis, the gear on the B axis is relatively small, and the torque value transmitted is limited. Therefore, the B-axis gear is the bottleneck of the bearing capacity of the twin-screw gearbox, which directly determines the power that the gearbox can transmit.