The automatic case erector machine is also called the carton automatic forming and sealing machine, which opens the carton board, folds the bottom of the box according to a certain procedure, and seals it with tape and then conveys it to the special equipment of the carton packer. The automatic carton forming machine and automatic unpacking machine are assembly line equipment for the automatic unpacking of large quantities of cartons, automatic folding of the lower cover, and automatic sealing of the lower bottom tape, the machine is controlled by PLC + display screen, and the packaging processes such as carton suction, unpacking, forming, folding bottom, and sealing are completed at one time, which is greatly convenient to operate and is an indispensable equipment for automated large-scale production. According to the production capacity, it can be divided into low-speed case erectors and high-speed case erectors machines, and according to the structure, it can be divided into vertical case erectors and horizontal case erectors.