conveyor belt
US /kənˈveɪ.ər ˌbelt/
UK /kənˈveɪ.ər ˌbelt/

1.
a continuous moving band used for transporting objects from one place to another, especially in a factory, airport, or supermarket
:
•
The luggage moved along the conveyor belt to the baggage claim.
•
Workers stood by the conveyor belt, assembling products.