Full-automatic edge sealing machine and edge sealing method thereof

The invention discloses a full-automatic edge banding machine and an edge banding method thereof in the technical field of automatic packaging, the full-automatic edge banding machine comprises a transfer mechanism, an external fixing mechanism, a pressing plate mechanism, a packaging mechanism and a control mechanism, the transfer mechanism is used for transferring cartons, the control mechanism is arranged right above the transfer mechanism, the control mechanism is installed on the fixing mechanism, and the pressing plate mechanism is connected with the packaging mechanism. The pressing plate mechanism is arranged on the control mechanism, and the packaging mechanism is arranged in the pressing plate mechanism; the pressing plate mechanism can move downwards and press an opening of the carton, the pressing plate mechanism stops moving downwards in the mode that the carton body provides supporting force, and the vertical height of the packaging mechanism changes along with changes of the vertical height of