A case packing system for loading articles into containers includes an article conveyor for conveying articles, a case conveyor for conveying containers, and first, second, and third bins. A first robotic mechanism moves articles on the article conveyor to the first, second, and third bins. A second robotic mechanism moves articles from the first, second, and third bins to containers on the case conveyor. A controller operatively coupled to the first robotic mechanism and the second robotic mechanism is configured to pick and place with the first robotic mechanism one or more conveyed articles into the first, second, and third bins, and grab and load with the second robotic mechanism one or more articles from the first, second, and third bins into containers on the case conveyor.