Automatic supply system of bolt and nut for battery pack assembly

An automatic bolt and nut supply system configured to automatically supply bolts and nuts necessary for each step of a battery pack assembly by type at a time of assembly of the battery pack, the automatic bolt and nut supply system comprising:

• a plurality of feeders, each feeder configured to store one type of bolt or nut necessary for the battery pack assembly and supply the bolts and the nuts by type to a supply passage thereof;
• a conveyor configured to receive and convey the bolts and the nuts supplied from the supply passages of the plurality of feeders;
• a reception box configured to receive the bolts and the nuts conveyed by the conveyor;
• and
• a reception box transferor configured to transfer the reception box,
• wherein the conveyor comprises:
• a container having a sidewall with an open top and an open bottom;
• a driver configured to move a position of the container between the plurality of feeders and the reception box;
• and
• a door located under the bottom of the container, the door being openable and closable so that the container can receive the bolts and nuts from the supply passages of the plurality of feeders when the door is closed and supply the stored bolts and nuts to the reception box when opened.