A robot places the flat carton blank into the erecting station of the automatic case erector with bottom folding. Driven by dual-side belts, the machine automatically folds the front, rear, and side bottom flaps and applies tape to seal the base. It can be integrated with a case sealer to form a complete carton packaging production line. This solution enhances production efficiency, reduces consumable usage by 5–10%, significantly lowers operational costs, improves throughput, and ensures standardized packaging.