This paper presents the injection parts molding process and injection mold structural characteristics and operating process of refrigerator water box.

Complex parts only can adopt the method of multi-box molding, difficulty is increased, casting is easy to cause dislocation, increase the workload of cleanup and machining.

"New" gear shell, toolbox (blow molding box) — adopt new raw material production, different from other similar products used by old and new raw material mix manufacture tradition.