Cooling water channel structure of automobile engine cooling fan mold

Abstract

The invention discloses a cooling water channel structure of an automobile engine cooling fan mold. The cooling water channel structure is composed of a fixed mold side water channel arranged on the back side of a fixed mold side fan mold cavity and a movable mold side water channel arranged on the back side of a movable mold side fan mold cavity. The fixed mold side water channel comprises a plurality of independent fixed mold side well type water channels. Each fixed mold side well type water channel is arranged on the back side of a blade cavity in the fixed mold side fan mold cavity. Eachfixed mold side well type water channel is provided with an inlet and an outlet. The movable mold side water channel comprises a plurality of independent movable mold side well type water channels. Each movable mold side well type water channel is arranged on the back side of a blade cavity in the movable mold side fan mold cavity. Each movable mold side well type water channel is provided with aninlet and an outlet. The cooling water channel structure has the advantages that the cooling effect is good; the shape of the curved surface of each injection molded fan blade can reach the expectedideal shape; the injection molding period can be shortened; and the injection molding production efficiency is greatly improved.

Description

technical field [0001] The invention relates to a design and manufacturing technology of a plastic mold, in particular to a cooling water channel structure in a cooling fan mold of an automobile engine. Background technique [0002] The structure of the existing automobile engine cooling fan is as follows: Figure 1a to Figure 1e As shown, it includes a central round platform 91 and a fan spoke 92, and the annular cavity between the central round platform 91 and the fan spoke 92 is a blade installation cavity 93, and multiple fan blades 94 with different shapes are installed in the blade installation cavity 93. The distribution of fan blades 94 is uneven, and the shape of fan blades 94 is the curved surface shape of space (from Figure 1d and Figure 1e can be seen in). Common automotive engine cooling fans are made of PA66-GF30, which is a PA66 material containing 30% glass brazing, with an outer diameter of 408.1mm and a thickness of 34.4mm. It is 388.7m, and seven fan ...

AI Technical Summary

Problems solved by technology

[0004] The cooling waterway structure in the existing automobile engine cooling fan mold is composed of the fixed mold side direct waterway arranged on the periphery of the fixed mold cavity of the product and the movable mold side straight waterway arranged on the periphery of the product movable mold cavity. This cooling waterway structure has the following Problems: 1) The cooling effect on the injection-molded fan blades is not obvious, resulting in the curved surface shape of the injection-molded fan blades failing to achieve the desired ideal shape; 2) The injection molding cycle takes 75 seconds, which brings about the improvement of injection molding production efficiency adversely affected

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