Hot runner structure of semi-solid magnesium alloy die-casting mold

By employing a combination design of a spiral assembly and a flow divider in a semi-solid magnesium alloy die-casting mold, optimizing the flow path, and combining it with mechanical linkage monitoring, the problems of flow channel blockage and poor reliability of state monitoring were solved. This enabled dynamic adjustment and stable monitoring of the fluid state, thereby improving the molding quality and reliability of the mold.

CN121131715BActive Publication Date: 2026-05-01GUANGDONG QIXIN MOLD CO LTD
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Patent Information

Application Number
CN202511426507.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-09-30
Publication Date
2026-05-01
Estimated Expiration
2045-09-30

AI Technical Summary

Technical Problem

Existing semi-solid magnesium alloy die-casting molds are prone to blockage and uneven solid-liquid phase distribution in the runner, resulting in incomplete mold filling and unstable part performance. Furthermore, the traditional hot runner structure has poor reliability in condition monitoring and is difficult to maintain.

Method used

The hot runner structure employs a combination of a spiral assembly and a flow divider cavity. The flow path is optimized through the differentiated design of spiral guide protrusions and straight channels. Combined with a mechanically linked condition monitoring mechanism, real-time monitoring and dynamic adjustment of the fluid state are achieved.

Benefits of technology

It effectively avoids flow channel blockage, improves the melting uniformity of solid particles and overall heating efficiency, enhances mold stability and molding quality, and improves the reliability of condition monitoring and ease of maintenance.

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Abstract

The application relates to the technical field of molds, and particularly discloses a hot runner structure of a semi-solid magnesium alloy die-casting mold, which comprises a main runner structure and at least one sub-flow nozzle connected with the main runner structure, a sub-flow cavity is formed in the sub-flow nozzle, a valve needle is arranged in the sub-flow cavity, an outer wall of the valve needle is sleeved with a spiral sleeve, an outer wall of the spiral sleeve is provided with spiral guide protrusions, and intervals for fluid passing are formed between the spiral guide protrusions and an inner wall of the sub-flow cavity; and the spiral sleeve is connected with a conductive mechanism for axial displacement. The hot runner structure of the application considers both flow path optimization and real-time state monitoring, so that the stability of a semi-solid magnesium alloy die-casting process and forming quality are improved.
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