O-shaped sealing ring automatic assembling device and automatic assembling method thereof

The invention discloses an automatic O-shaped sealing ring assembling device and an automatic assembling method thereof. The automatic O-shaped sealing ring assembling device comprises a rotary material distributing unit, a linear feeding unit, a material taking table unit and a material taking and assembling unit. The material taking and assembling unit comprises a support, a first linear module arranged on the support, a second linear module arranged on the first linear module and a material taking and discharging assembly arranged on the second linear module, and the second linear module can slide on the first linear module in the second direction. At least one part of the material taking and discharging assembly is located over the designated material taking position on the material taking table unit, and the material taking and discharging assembly can slide on the second linear module in the third direction. The O-shaped sealing ring assembling device solves the problems that in the prior art, O-shaped