Stamping die for integrated fan blade assembly

CN224333264UActive Publication Date: 2026-06-09NINGBO ZHENGYI PRECISION TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO ZHENGYI PRECISION TECHNOLOGY CO LTD
Filing Date
2025-06-09
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In existing industrial fan manufacturing, the welding process between the split blades and the rotor results in large assembly errors, low structural strength, high yield loss, and high dynamic balance failure rate due to welding deformation.

Method used

The fan adopts an integrated structure, with the bushing and blades formed by stamping. It uses specially designed stamping dies, including an upper die unit, a lower die unit, and a die closing and positioning system. Nitrogen springs and a reset mechanism are used to achieve precise die closing and dynamic compensation, ensuring processing accuracy and efficiency.

Benefits of technology

It has achieved high-precision integrated fan blade assembly molding, with high standards for bushing roundness and blade profile, improving production efficiency and reducing defect rate and cost caused by welding deformation.

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Abstract

This invention relates to the field of precision stamping die technology, and discloses a stamping die for an integrated fan blade assembly (including a bushing and blades) for forming an integrated fan blade assembly. The stamping die includes an upper die unit A, a lower die unit B, and a die closing and positioning system. The lower die unit B includes a lower module, a flip-hole die core, and a flip-hole die core reset mechanism. The upper die unit A includes an upper module, a nitrogen spring, and a nitrogen spring-driven upper die pusher block. The die closing and positioning system includes multiple guide pillars for guiding the stamping stroke. The stamping die of this invention can effectively solve the assembly errors and welding deformation problems caused by traditional split-type fan structure manufacturing.
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