Full-automatic clamping piece combining machine and combining method

The full-automatic clamping piece combining machine comprises a clamping piece vibration disc, an O-shaped ring vibration disc, a discharging device, a transplanting mechanism, a ring sleeving mechanism and a control system, a partition plate I is arranged on a discharging pipe, the transverse direction of the partition plate I is the same as the moving direction of a material distributing groove, a material clamping plate through hole and an observation opening are formed in the discharging pipe, and the observation opening is located above the material clamping plate through hole; a switch position sensor is arranged at the position opposite to the observation opening, the lower end of a pneumatic claw on the pneumatic claw device is of an arc-shaped chamfer structure, and an O-shaped ring inductive sensor is arranged on an O-shaped ring containing plate of the O-shaped ring device. The O-shaped ring can be conveniently sleeved through the arc-shaped chamfering structure at the lower end of the pneumatic cl