This article utilizes the spring ball locking structure to design a fast tear-tape roll positioning device. The application results of this device show that the tear-tape roll replacement time of the operator’s is shortened from 90 s to 24 s, and the frequency of use failures caused by the inadequate locking of the tear-tape roll is reduced from 1.4/week to 0/week, which effectively improves the operation efficiency of equipment and the stability of cigarette packaging quality.