The production line is fully automated, and from traditional manual production to automatic production ,and the time beat is 8s/a, and it has seven processes, and it has the automatic feed of the casing, and Automatic screening of length non - conforming product , The manipulator feeds the material automatically during the process, One side of the casing is automatically peeling, dressing, riveting, Automatically switch to the other end, and automatically peel, wear sleeve, riveting it. The length of the product sleeve is 500-700 non-pole adjustable.