Tobacco packaging white cardboard butt joint device

The invention discloses a tobacco packaging white cardboard butt joint device, and belongs to the technical field of cigarette packaging equipment. The device is characterized in that the tobacco packaging white cardboard butt joint device comprises two paper suction units, the two paper suction units are symmetrically arranged up and down, and each paper suction unit comprises a crimping cylinder and a vacuum suction plate; the crimping cylinders are provided with cylinder rods vertically extending in the opposite direction of the two paper suction units; and the vacuum suction plates are installed on cylinder rods of the crimping cylinders, the two vacuum suction plates are provided with opposite paper suction planes, and air suction holes are evenly distributed in the paper suction planes of the vacuum suction plates. According to the device, in the normal feeding state of a feeding paper roll, an operator can install a standby paper roll in the device, and when the paper roll needs to be replaced, the dev