Tray for physical distribution sorter and article sorting apparatus

A tray for a physical distribution sorter, comprising:

• a first frame body configured to move in a predetermined direction on a track of the physical distribution sorter;
• a first pulley configured to rotate about a predetermined axis with respect to the first frame body;
• a second pulley configured to rotate about the predetermined axis with respect to the first frame body;
• a first rotating plate configured to rotate with rotation of the first pulley;
• a second rotating plate configured to rotate with rotation of the second pulley;
• a first wire wound around the first pulley and the second pulley, and configured to, when the first wire is unwound from the second pulley and wound around the first pulley, the first rotating plate and the second rotating plate rotate and close, and when the first wire is unwound from the first pulley and wound around the second pulley, the first rotating plate and the second rotating plate rotate and open in a double-open manner;
• a first buffer portion provided between the first pulley and the first frame body that is configured to buffer an impact when the first rotating plate is opened;
• and
• a second buffer portion provided between the second pulley and the first frame body that is configured to buffer an impact when the second rotating plate is opened,
• wherein the second buffer portion includes:
• a damper provided between the second pulley and the first frame body, and
• a biasing member provided between the second pulley and the first frame body that biases the second pulley to be separated from the first pulley.