Relay semi-finished product assembling machine

The relay semi-finished product assembling machine comprises a first feeding device, a second feeding device and a third feeding device which are sequentially arranged on the left side, a conveying line arranged on the right side, a rotating disc evenly provided with carriers, a riveting device arranged between the third feeding device and the rotating disc, and a discharging device arranged between the riveting device and the conveying line. The rotating disc is provided with a first station, a second station and a third station in the rotating direction, the riveting device is provided with a preassembling table and a riveting table, the first feeding device is used for placing two yoke clamps on a carrier of the first station every time, and the second feeding device is used for magnetizing magnetic steel and assembling and connecting the two magnetic steel to the two yoke clamps on the carrier every time; the third feeding device moves back and forth between the third station and the preassembling table s