Automatic assembling machine for assembling valve rod sealing ring

The utility model relates to the field of valve assembling, in particular to an automatic assembling machine for assembling a valve rod sealing ring, which comprises a valve rod vibrating disc and a sealing ring vibrating disc, the outlet end of the valve rod vibrating disc is connected with a valve rod track, and the outlet end of the sealing ring vibrating disc is connected with a sealing ring track. The left side of the downstream end of the valve rod rail and the right side of the downstream end of the sealing ring rail are each provided with a set of valve rod clamping pieces, and the front side of each valve rod clamping piece is provided with a tool clamp for clamping a valve body. A clamp air cylinder for driving the tool clamp to transversely move back and forth between the valve rod track and the sealing ring track is arranged on the right side of the tool clamp, a knocking air cylinder is arranged over the middle position of the tool clamp, a knocking hammer is arranged at the front end of the knoc