The utility model belongs to carton packaging machinery. The purpose is that the star gear that provides system gets box mechanism and can reduce a speed and the acceleration getting the box point and put the box point to improve mechanism's reliability of operation. Technical scheme is: an oval circle gear combination planetary gear train carton suction box mechanism, including location rotationally on fixing support and the left side by dynamic mechanism driving's rotation axis, fixing support's right -hand member fixing with the coaxial sun gear of arranging of rotation axis, the right -hand member of rotation axis is followed and is being fixed the rotating circular disk of regarding as the planetary carrier after the central trompil of sun gear is passed again, rotationally fixing a position on the rotating circular disk at least a pair of with rotate parallel transmission minor axis and the transmission major axis of disc shaft line, the circular cock wheel of fixing oval cock wheel on the transmission minor axis and meshing with the sun gear, the oval planet wheel with the meshing of oval cock wheel is being fixed to transmission major axis one end, and the sucking disc that is used for the actuation carton is being fixed to the other end of transmission major axis through the sucking disc support.