First-in first-out linear storage device with receiving buffering function for bearing rings

The invention discloses a first-in first-out linear storage device with a receiving buffering function for bearing rings. The first-in first-out linear storage device comprises a base plate, a first top plate, a second top plate, a storage frame, a feeding unit and a receiving unit. The storage frame comprises an upper plate and a lower plate, the upper plate is provided with a plurality of feeding holes, the lower plate is provided with a plurality of discharging holes, the first top plate is provided with a first motor, a first sliding rail, a first sliding seat, a first lead screw and a finger air cylinder, and grabbing units are installed at the movable ends of the finger air cylinders. A second sliding rail is connected between the base plate and the second top plate, a second motor is installed on the second top plate and connected with a second lead screw, the second lead screw penetrates through and drives a second sliding seat, the second sliding seat is further matched with the second sliding rail,