Oil pipe of automobile differential mechanism and water-assisted injection mold for manufacturing oil pipe

The utility model relates to an automobile differential oil pipe and a water-assisted injection mold for manufacturing the oil pipe. The conventional oil pipe product is tedious and complicated in production process, easy to leak at a welding seam, poor in dimensional precision of a mounting position and low in batch production efficiency. The mold comprises an upper mold core and a lower mold core, and is characterized in that a product cavity is formed between the upper mold core and the lower mold core, a hot runner is formed below one end of the upper mold core, the hot runner is connected into one end of the product cavity through a first runner pipe, and a water-assisted spray head is arranged below the other end of the upper mold core. And the water-assisted spray head is connected to the other end of the product cavity through a second runner pipe. Oil pipe products are formed through water-assisted injection molding, and good product surface quality is obtained. And after the product is changed into