Water leakage prevention cooling system in large die-casting die production and working method of water leakage prevention cooling system

The invention belongs to the technical field of application of large die-casting dies of automobile lightweight parts, and particularly discloses a water leakage prevention cooling system in large die-casting die production. Comprising a die-casting machine, a movable die, a sprue bush, a PLC (programmable logic controller), a movable die water bucket, a die cooler, a compressed air blowing system, a fixed die water bucket, a cooler, a die cooler, a punch, a pressure chamber, a sprue bush, a water replenishing tank, a water purifier, a circulating water supply tank and the like. The mold has the beneficial effects that the problem of water leakage of the mold is fundamentally solved, the production efficiency can be improved, and particularly, the heat balance problem of a large mold is solved; a large amount of quality defects caused by incapability of checking are avoided, and the product percent of pass is improved; the PLC achieves automatic control over the die-casting machine, the die cooling machine, t