Automatic aligning and tray combining system for cigarette packets

An automatic aligning and tray combining system for cigarette packets comprises a tray combining robot, an automatic conveying system for empty trays and an automatic conveying system for full trays. The tray combining robot comprises a rack (1), a vertical shaft (4) which is installed on the rack and can move along the X-axis, the Y-axis and the Z-axis, a holding mechanism (3) which is installed at the bottom end of the vertical shaft and used for holding a cigarette packet unit (6), a tray combining station (8) located below the holding mechanism, a gas path system (2) for controlling movement of the vertical shaft and actions of the holding mechanism, and a limiting device (5) arranged beside the holding mechanism. The holding mechanism comprises two clamps (3a and 3b) which are arranged symmetrically on the left and the right and suspension arm type bottom supporting mechanisms (3c and 3d) connected to the bottom ends of the clamps, and the gas path system is connected with a control system. Through match