The present utility model discloses an oil supply system for mold core rods of an injection blow molding machine, comprising a hot oil distributor fixedly connected to the lower end of a transmission shaft. The hot oil distributor is provided with oil supply joints and oil return joints equal in number to core rod seats. Each core rod seat is internally provided with a hot oil passage, and each core rod seat is provided with an oil inlet joint and an oil outlet joint respectively connected to two ends of the hot oil passage. The oil supply joints are communicated with the oil inlet joints in one-to-one correspondence through oil pipes, and the oil return joints are communicated with the oil outlet joints in one-to-one correspondence through oil pipes. The hot oil distributor is internally provided with a main oil supply chamber, a main oil return chamber, oil supply passages connecting the main oil supply chamber with each oil supply joint, and oil return passages connecting the main oil return chamber with each oil return joint. The main oil supply chamber is communicated with the output end of an oil pump through an oil pipe, and the main oil return chamber is communicated with the oil return end of the oil pump through an oil pipe. By supplying oil to the hot oil passages in the core rod seats and making the oil circulate, the temperature of the core rod seats is controlled, thereby indirectly controlling the temperature of the core rods.

Country Code: CN

Application Number: CN201720005126.7