Device for forming and inspecting end piece on screw of fastening ring

A device for forming and inspecting an end piece on a screw of a fastening ring, comprising:

• a deck having a rotary disk connected thereon, a control unit connected to the deck and controlling the rotary disk, an inspection unit, a first riveting machine, an arm unit and a conveyor respectively and electrically connected to the control unit, and located around the rotary disk, multiple holding devices connected to the rotary disk and each holding device including two holding members, each holding member holding a fastening ring, each fastening ring having an opening defined between two plates, and a screw extending through the two plates, each screw having a threaded section which extends upward, the screw being positioned by the holding member corresponding thereto;
• the inspection unit having an inspection rod which descends and contacts the threaded section of the screw of the fastening ring on the holding member of the holding device corresponding thereto so as to inspect the screw, when the screw is located at a correct position, the inspection unit sends a normal signal to the control unit which drives the rotary disk to rotate, when the screw is located at an incorrect position, the inspection unit sends an abnormal signal to the control unit which stops the rotary disk;
• the first riveting machine including a first rotatable member which is located corresponding to one of the fastening rings of one of the holding devices, the control unit controlling the first rotatable member to descend and to machine the threaded section of the fastening ring corresponding thereto, the control unit then controlling the rotary disk to rotate and aligning another one of the fastening ring with the first rotatable member, and controlling the first rotatable member to descend and to machine the threaded section of the fastening ring corresponding thereto, and
• the arm unit extending across the rotary disk and the conveyor, the arm unit picking one of the fastening ring and releasing the fastening ring to the conveyor.