The utility model relates to the field of packaging equipment, in particular to a
carton sealing device used on a
carton forming and
packaging machine, which comprises a rack, a
carton forming mechanism, a glue spraying device and a carton sealing device are arranged on the rack, and the glue spraying device and the carton sealing device are both arranged above the carton forming mechanism. The box forming mechanism comprises two conveying chains arranged on the
machine frame, the conveying chains are driven by a forming motor to rotate, a plurality of conveying clamping blocks are further fixed to the conveying chains, side sealing air cylinders are further symmetrically fixed to the positions, on the two sides of the conveying chains, of the
machine frame, side sealing push plates are fixed to the
tail ends of
piston rods of the side sealing air cylinders, and the side sealing push plates are fixed to the
tail ends of the
piston rods of the side sealing air cylinders. A right guide rod is further fixed to the portion, on one side of the conveying chain, of the
machine frame, and a left guide rod is further fixed to the portion, on the other side of the conveying chain, of the machine frame. According to the device, paperboards can be manufactured into cartons, the product packaging efficiency is greatly improved, and automatic packaging is achieved.