Pin press-fitting mechanism

The utility model discloses a pin press-fitting mechanism which comprises a horizontally-arranged workbench, a positioning tool sliding on the workbench and a press-fitting mechanism arranged in a suspended mode, and the positioning tool moves under the press-fitting mechanism in a reciprocating mode. The press-fitting mechanism comprises a portal frame arranged on the workbench, a press-fitting head connected to the portal frame in a sliding mode and a power device vertically arranged at the top end of the portal frame, and the press-fitting head comprises a pressure bearing mechanism connected to the portal frame in a sliding mode, a guide mechanism connected to the pressure bearing mechanism in a sliding mode and an ejector rod fixed to the pressure bearing mechanism; the ejector rod penetrates through the guide mechanism in a sliding mode, the guide mechanism comprises a positioning ring connected to the pressure bearing mechanism in a sliding mode, a plurality of guide blocks arranged on the top face of