b) Suction cups horizontal and vertical balancing layout. After the improvement, the vacuum suction cups adopt the specification fφ30, a total of 9×13=117 cups, divided into 5 groups, the layout of which is shown in Fig. 6. Only when group 1, 3, 4 and 5 were working alone, the force imbalance was large. In most cases, the horizontal or vertical adsorption force balance could be maintained, thus reducing the drop number of cigarette packing cases.