Die-casting die high pressure point cooling system

Abstract

The invention discloses a die-casting die high pressure point cooling system, comprising a cold water box, a point cooling water returning pipe and a point cooling water supplying pipe; one end of the point cooling water returning pipe is connected with a water inlet end of the cold water box of which a water outlet end is connected with one end of the point cooling water supplying pipe; a refrigerator is arranged at one side of the cold water box for cooling water flowing in the cold water box; the point cooling water supplying pipe is provided with a softener and a boost pump. The die-casting die high pressure point cooling system aims at the problem of difficulty in cooling of a tiny mold core, circulated cooling water is pressurized by the boost pump, point cooling of a mold core needle with the minimal diameter being 4mm is realized, difficulties of liability in generation of hot shrinkage holes, liability in aluminum adhering and liability in core breakage are solved, the cooling water is softened and purified by the softener and is prevented from generating water scale in a point cooling pipe, and blockage is avoided.

Description

technical field [0001] The invention relates to the field of die-casting production of auto parts, in particular to a high-pressure spot cooling system for a die-casting mold. Background technique [0002] In die-casting production, the mold temperature is very important to the internal quality and appearance of the formed product. It mainly affects the internal air shrinkage cavity, shrinkage porosity and appearance of the casting as ablation sticking aluminum and cold shut. Therefore, in the die-casting production process, The control of the mold temperature is a very important link in the die-casting process, and the control of the mold temperature is usually realized through the mold cooling water system. Mold cooling water systems are generally divided into two categories: direct cooling and spot cooling. The former is used for cooling molds in large areas, and the latter is used for cooling local small areas or core pins. [0003] At present, when the die-casting fact...

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Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a high-pressure spot cooling system for die-casting molds, which can cool small-diameter cores, improve the cooling effect, avoid pipeline blockage, and solve the problems of thermal shrinkage holes and small cores that are easy to stick to aluminum

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