1. Cup feeding: after the paper cup is counted by the cup counting frame, it falls down and slides onto the cup table. After the optical eye detects a cup, the cup turning mechanism pours the paper cup on the rope and send it to the top of the heat sealing splint; 2. Film feeding: when the optical eye detects a cup, it sends a pulse to the servo driver after being recognized by the PLC program, and sends out the corresponding length film according to the different caliber of the cup; 3. Heat sealing: the hot air splint opens, the cupdown, the splint closes, and the heat sealing knife heat seals the film to complete the bag sealing process; 4. Cup output: the sealed cup drops onto the rear conveyor board, and cups of different specifications are dropped into the box from the corresponding cup outlet according to the memory function of PLC program to complete cup collection.