The invention relates to a pressing ring device for inductor assembly. The pressing ring device comprises a rack and a power distribution control box; a conveying device is arranged on the rack; a feeding and unloading device is arranged on the upper middle part of the conveying device; an iron sheet inserting device is arranged on the left side of the conveying device; a pressing ring device anda core inserting device of an iron core are arranged on the right side of the conveying device; the feeding and unloading device comprises a loading tray arranged on the rack; the loading tray is matched with a feeding conveying groove and a unloading conveying groove on the rack through a material taking device; and the feeding conveying groove and the unloading conveying groove are matched witha conveying carrier on a conveying chain through a transfer device. According to the pressing ring device, the conveying chain running anticlockwise is adopted as a conveying part, so that the feedingstation and the unloading station can be adjacent and a feeding and unloading station matched with the feeding station and the unloading station is arranged; the same loading tray is adopted as a loading part of framework and finished product, thereby achieving the integrated operation of feeding and unloading is achieved, greatly improving the assembly efficiency, saving the occupied space, andreducing energy consumption of the delivery process.