The vibration core rod of a cement pipe making machine relates to the technical structure of the cement pipe making machine, which includes a connecting flange fixed on the frame, an outer sleeve connected to the connecting flange, a shaft core arranged on the axis of the outer sleeve, the bottom of the shaft core connected to a rotating transmission mechanism, bearings arranged axially between the shaft core and the outer sleeve, an oil pool connected to the bottom of the outer sleeve, a return oil pipe connected to the bottom of the oil pool, a side hole opened on the outer sleeve, and a oil supply pipe connected to the side hole, The oil supply pipe and the return pipe are connected to a fuel tank, a fuel supply pump, and a cooling fan is also connected to the fuel tank.

The liquid oil is directly pumped into the bearing inside the outer sleeve through the oil supply pump, and the heated liquid oil returns to the oil tank through the return pipe in the oil pool. The heated oil is cooled by a cooling fan and then circulated. The structure is simple and reasonable, and can vibrate the core rod for cooling in a timely manner to ensure its working life.