A method for determining the quality of an injection molded article

By synchronously collecting mold cavity pressure and temperature waveforms throughout the entire injection molding cycle, performing preprocessing and multi-rule judgment, the problem of insufficient full-cycle monitoring in existing injection molded product qualification judgment methods is solved, achieving accuracy and real-time performance in full-process quality judgment.

CN122401818APending Publication Date: 2026-07-17JIMEI UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIMEI UNIV
Filing Date
2026-04-23
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing methods for determining the conformity of injection molded products lack full-cycle and comprehensive analysis, fail to achieve real-time monitoring, and are prone to omissions and misjudgments. Furthermore, traditional judgment rules lack systematicity and flexibility, and cannot adapt to the structural, material, and precision requirements of different molds.

Method used

By synchronously collecting mold cavity pressure and temperature waveforms throughout the entire injection molding cycle, preprocessing and multi-rule judgment are performed, including peak monitoring, right-angled four-sided frame monitoring, parallel four-sided frame trend monitoring, trapezoidal four-sided frame trend monitoring, and standard curve envelope judgment. Combined with critical and non-critical judgment rules, the entire process quality judgment is realized.

Benefits of technology

It enables comprehensive and precise monitoring of the injection molding process, improves the accuracy and comprehensiveness of qualification judgment, reduces omissions and misjudgments, and supports quality judgment before or at the moment of product demolding.

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Abstract

本发明公开了一种注塑制品合格性判定方法,涉及注塑成型质量检测技术领域。该方法的具体步骤为:先在模腔布置传感器,全周期同步采集压力与温度波形;接着对波形去噪等处理,换算压强并计算各阶段特征参数;然后执行多项判定生成结果;再整合结果依据分级逻辑输出合格性结论;最后将波形、参数、判定数据及工艺参数关联存储,实现全流程管控。本发明对注塑成型全周期模腔压力与温度波形同步采集处理,结合多维度判定规则实现全域精准监控,突破传统局限;还构建分级判定逻辑,整合结果并关联存储、双端备份数据,实现智能化、标准化、数据化管理,提升注塑生产质量管控水平。
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