Carton opening mechanism of carton opening machine

The invention discloses a carton opening mechanism of a carton opening machine. The carton opening mechanism is characterized in that the position adjustment of each part of a material storage assembly is realized by adopting an electric driving mechanism, the carton opening assembly is provided with a plurality of movable suction cups in the height direction, after position adjustment is achievedthrough the electric driving mechanism, cartons of different length specifications are adsorbed, work and stop of the suction cups in the height direction can be selected according to the specifications of the cartons, the cartons of different height specifications are correspondingly adsorbed, when the specification is relatively small, the upper-layer suction cups can be selected to stop working; and height adjustment of a rear upward pushing frame is achieved through the electric driving mechanism to adapt to cartons of different height specifications, the upward pushing frame and an arc-shaped guiding frame stabl