Roller conveyors are primarily used in the packaging section of tobacco primary processing lines for threshing and redrying, where they transport carton-packaged tobacco leaves, fragments, or stems, enabling automated and smooth material transfer. This equipment precisely matches the conveyance pace of each processing stage, ensuring the continuity and stability of tobacco material transportation while effectively enhancing production efficiency. The overall operational efficiency of the machine is over 99%, with a noise level of ≤ 80 dB.