Box unpacking machine

Position adjustment of all parts of a storage mechanism of the case unpacking machine is achieved through an electric driving mechanism, and synchronous adjustment is conducted at the position of a lower case sealing mechanism. The carton opening mechanism is provided with a plurality of movable suckers in the height direction, cartons of different length specifications are adsorbed after positionadjustment is achieved through an electric driving mechanism, the suckers in the height direction can be selected to work and stop according to the specifications of the cartons, and the cartons of different height specifications are correspondingly adsorbed; the selection of the upper sucker to stop working when the specification is relatively small is facilitated; the height of the rear upwardpushing frame is debugged through the electric driving mechanism, the carton pushing device adapts to cartons of different height specifications, the upward pushing frame and the arc-shaped guiding frame stably push the carton