Continuous production tray feeding and discharging machine

A tray feeding and discharging machine for continuous production comprises a machine frame, three feeding and discharging stations are arranged on the machine frame, and a circuit board feeding device and a tray carrying device are further fixed to the machine frame. The circuit board feeding device comprises a first moving assembly and a first grabbing assembly connected with the first moving assembly, the first grabbing assembly is used for grabbing a circuit board or loosening the grabbed circuit board, and the first moving assembly can move the first grabbing assembly to the position above any feeding and discharging station. The driving assembly is used for driving the first grabbing assembly to get close to or away from the feeding and discharging station; the tray carrying device comprises a second moving assembly and a second grabbing assembly connected with the second moving assembly, the second grabbing assembly is used for grabbing or loosening the trays, and the second moving assembly can move the