Palletizing system for loading articles on pallet

A palletizing system for loading a plurality of types of articles on a pallet, the palletizing system comprising:

• a supply conveyor configured to convey a first type of article and a second type of article having a dimension different from that of the first type of article;
• a type detection sensor configured to detect the type of the article conveyed by the supply conveyor;
• a first buffer conveyor provided subsequent to the supply conveyor so as to convey the first type of article;
• a second buffer conveyor provided subsequent to the supply conveyor at vertically upward of the first buffer conveyor so as to convey the second type of article;
• a sorting robot configured to pick up the first type of article detected by the type detection sensor from the supply conveyor and place the first type of article on the first buffer conveyor, and configured to pick up the second type of article detected by the type detection sensor from the supply conveyor and place the second type of article on the second buffer conveyor;
• and
• a loading robot configured to pick up the first type of article from the first buffer conveyor and the second type of article from the second buffer conveyor, and load them on the pallet in accordance with a loading pattern which determines loading positions of the first type of article and the second type of article on the pallet.