Concentric fitting press-in tool mould

A base is fixedly connected to a press machine, the base is movably connected with a limiting upper cover, a groove is formed in the upper portion of the limiting upper cover, a pin hole is formed in the groove, a pin shaft is inserted into the pin hole, an axial through hole is formed in the pin shaft, a lantern ring connecting piece is connected to the outer portion of the pin shaft in a sleeved mode, and the lantern ring connecting piece is arranged in the groove of a positioning upper cover. The lower portion of the step pin shaft is inserted into an axial through hole of the pin shaft and arranged in an axial through hole of the lantern ring connecting piece, a step table is arranged on the lantern ring connecting piece, an axial through hole is formed in the lantern ring connecting piece, and the lantern ring penetrates through the upper end of the step pin shaft in a sliding mode and is connected to the outer portion of the step table of the lantern ring connecting piece in a sleeving mode. And the lan