The stepped feeder of AND can automatically sense the feeding situation of the track through sensors. When there is no material on the track, it will automatically push the screw onto the track. By blowing air, the stacked and horizontal materials will be removed to ensure the transmission of the screw. The screw will be blown to the designated position through the air pipe. It can be applied to M2.5-M6 screws, with one in and one out feeding. It causes less wear to screws, has a low rate of screw jamming, and features screw counting and alarm functions. It is equipped with a digital pressure gauge to monitor real-time air pressure, has an alarm function, and is characterized by relatively low noise. The secondary push feeding system features high stability and a high rate of trough entry. The product advantage lies in that, when the problem of screws for customers is excluded, the rate of stuck screws is five in ten thousand. It adopts a digital pressure gauge to provide real-time feedback on the air pressure situation, ensuring high stability of the air source. PLC is more stable and easier to expand. The materials are solid, the chassis is stable and shock-resistant. The standard module products adopted by direct vibration are of more reliable quality.