Extrusion molding device for special-shaped thin-walled profiles

CN122057798BActive Publication Date: 2026-07-03GUANGDONG WEIYE ALUMINUM FACTORY GRP

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: GUANGDONG WEIYE ALUMINUM FACTORY GRP
Filing Date: 2026-04-22
Publication Date: 2026-07-03

AI Technical Summary

Technical Problem

In the existing technology, the L-shaped long arm of the irregular thin-walled profile is prone to problems such as insufficient filling, turbulent metal flow, insufficient strength at the junction and easy cracking during the extrusion molding process, resulting in low molding quality and shortened mold life.

Method used

An extrusion molding device with a specific structure is used. The upper die is equipped with a second set of flow holes. By optimizing the arrangement and cross-sectional area of the flow holes, the metal flow path is optimized to ensure sufficient material supply and reduce flow rate differences. Combined with the forming mechanism and flow-blocking components, the molding quality of L-shaped long arms and abrupt corner structures is improved.

Benefits of technology

It effectively improves the forming quality and structural stability of irregular thin-walled profiles, increases the yield of finished products, extends the service life of extrusion dies, and achieves tensile strength and hardness of profiles of 270MPa and 14HW or above.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the technical field of metal profile extrusion molding, and discloses an extrusion molding device for special-shaped thin-wall profiles, which comprises an extrusion die, a gap between a die core of an upper die and a profile hole of a lower die forms a molding gap, the molding gap comprises a first molding part and a second molding part arranged along an X direction, the second molding part comprises a hollow segment molding part and an L-shaped long-arm molding part, the L-shaped long-arm molding part comprises a longitudinal molding segment and a transverse molding segment, the upper die comprises a first shunt hole, a second shunt hole and a third shunt hole, the profile cross-sectional area of each shunt hole at an inlet end is smaller than that at an outlet end, and in the Z direction, the orthographic projection of the transverse molding segment falls within the orthographic projection range of the profile at the outlet end of the first shunt hole and outside the orthographic projection range of the profile at the inlet end of the first shunt hole, and the orthographic projection of the hollow segment molding part is located in the area between the profiles at the outlet ends of the second shunt hole and the third shunt hole, so that the extrusion molding quality of the profile can be effectively improved.

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