Cooling water jacket

Abstract

The invention discloses a cooling water jacket. The cooling water jacket is applied to a mold and comprises a fixing part and a body part, wherein the fixing part is fixed to a template of the mold; the body part is arranged on a hot nozzle in a sleeving manner and is used for cooling the hot nozzle, and the body part is provided with a cooling water path for enabling the cooling liquid to flow inthe body part; and and the cooling water path is composed of an ascending water path, a descending water path and an arc-shaped water path, the ascending water path and the descending water path arespiral, the arc-shaped water path is arranged at the top end of the body part, and the ascending water path and the descending water path are connected with the arc-shaped water path. According to thecooling water jacket, through the arrangement of the spiral ascending water path and the spiral descending water path, uniform cooling can be provided for a needle valve area, the cooling effect of the needle valve area is improved, water retention can be avoided, and the product quality is improved.

Description

[0001] 【Technical field】 [0002] The invention relates to a mold structure, in particular to a cooling water jacket in the mold. [0003] 【Background technique】 [0004] In the injection molding production process, in order to solve the punching marks on the surface of the inverted mold product, the cooling method is generally used to cool the hot nozzle to make plastic products. The usual cooling method is to install a cooling water jacket on the outer ring of the hot nozzle. The molding of plastic products made by the cooling method is not only beautiful, but also improves the quality of the product surface. [0005] As the requirements for product appearance are getting higher and higher, and the processing methods of product appearance include high mirror surface and special embossing, etc., higher requirements are put forward for the cooling of the needle valve area of ​​the hot nozzle. However, although the cooling water jacket in the prior art has a simple structure, ...

AI Technical Summary

Problems solved by technology

However, although the cooling water jacket in the prior art has a simple structure, its cooling effect on the needle valve of the hot nozzle is poor, and stagnant water is easily generated in the cooling water jacket, which is not conducive to reducing the temperature in the needle valve area

[0006] In view of this, it is necessary to provide a cooling water jacket to solve the problem of poor cooling effect of the cooling water jacket on the needle valve area of ​​the hot nozzle and easy generation of stagnant water in the prior art

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