This product is used to connect with production line of tealight in order to realize producing automatically .When machine is running ,shaker satrts , aluminium cup are sent to turntable upside. Then they will reach aluminium cup conveyor of production line through a samll conveyor.When there are enough aluminium cups on conveyor ,shaker will stop working automatically ; When there are few aluminium cups , shaker will restart working by itself. This can supply enough aluminium cups for working ,while save energy .