Deformation analysis method, encapsulation structure, holding mechanism and forming system

By applying fixed constraints and defining and analyzing the anchor plane during the dual-color injection molding process of automotive lights, combined with mold flow analysis and optimization of the sealing structure and holding mechanism, the problems of bright lines and cracks in dual-color injection molding of automotive lights were solved, achieving efficient and accurate product design and manufacturing.

CN122241871APending Publication Date: 2026-06-19CHONGQING CHANGAN AUTOMOBILE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING CHANGAN AUTOMOBILE CO LTD
Filing Date
2026-03-25
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing technologies struggle to effectively predict and avoid defects such as bright lines and cracking during the dual-color injection molding process for automotive lights. Furthermore, they are time-consuming, costly, and lack systematic solutions.

Method used

By employing deformation analysis methods, fixed constraints are applied to the actual fixed points of the mold holding structure, defining the analysis anchor plane, and combining it with mold flow analysis software to accurately predict the amount of deformation. Additionally, the sealing structure and holding mechanism are designed to optimize the molding system.

Benefits of technology

It achieves high-precision deformation prediction and pre-deformation compensation, reduces the number of trial molding and rectification, improves product quality and first-time trial molding pass rate, shortens development cycle and reduces costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to a deformation analysis method, sealing structure, holding mechanism, and molding system for a dual-color light distribution lens for automotive headlights. The method involves first obtaining a three-dimensional data model of the dual-color light distribution lens. Then, in mold flow analysis software, the part insert is determined based on the mesh properties of the first white film of the light distribution lens. By applying the holding structure in the mold design to multiple fixed points on the first white film, fixed constraints are applied to the three-dimensional data model, and an analysis anchor plane is determined. Based on the fixed constraints, an analysis sequence including cooling, filling, pressure holding, and warping is executed on the three-dimensional data model to obtain the target deformation amount of the first white film contour in the analysis anchor plane. Based on the target deformation amount, the deformation analysis result of the light distribution lens is obtained. This deformation analysis result is used to perform pre-deformation compensation on the structure of the light distribution lens during the design stage. This disclosure can avoid repeated mold modifications caused by defects strongly related to deformation, such as bright lines, cracks, and material rework, from the source.
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