Method, system and equipment for monitoring state in injection mold cavity and medium

By collecting and analyzing the temperature and pressure data in the injection mold cavity in real time, dynamic segmentation and sliding window analysis combined with process benchmark model, accurate monitoring and abnormal positioning of the state in the injection mold cavity is achieved, and unstable product quality caused by fluctuations in the mold cavity is solved, and process stability and mold life management efficiency are improved.

CN119682159AActive Publication Date: 2025-03-25SICHUAN HANHAI PRECISION MFG CO LTD
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Patent Information

Application Number
CN202510193486.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-21
Publication Date
2025-03-25
Estimated Expiration
2045-02-21

AI Technical Summary

Technical Problem

During the injection molding process, temperature and pressure fluctuations in the mold cavity lead to unstable product quality, and it is difficult for the prior art to achieve real-time monitoring and abnormal positioning, resulting in a large number of defective products production and waste of resources.

Method used

By receiving the temperature and pressure signal data in the mold cavity, clock synchronization and data preprocessing, dynamic segmentation and sliding window analysis, statistical features and differential features between cavity are extracted, abnormal detection is performed in combination with the pre-trained process benchmark model, and abnormal time period and spatial area are located.

Benefits of technology

Accurate monitoring and abnormal positioning of the state in the injection mold cavity is achieved, process stability and mold life management efficiency are improved, and defective product productivity and resource waste are significantly reduced.

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Abstract

The invention relates to an injection mold cavity state monitoring method, system and device and a medium, and belongs to the technical field of mold state monitoring. The monitoring method comprises the steps that cavity state data of a to-be-detected injection mold is received, and clock synchronization and preprocessing are conducted; dynamically segmenting the time sequence data according to the injection molding process cycle, generating a sliding window for each process stage of the injection molding process cycle, and marking a key point in each sliding window; extracting statistical features and difference features between cavities, calculating trend features of adjacent data key points in each sliding window, combining to obtain high-dimensional feature vectors, inputting the high-dimensional feature vectors into a normal process reference model for comparison, and calculating to obtain a feature difference degree of each feature; performing anomaly detection according to the feature difference degree, positioning an anomaly time period and an anomaly space region, and obtaining an anomaly detection result; and generating maintenance prompt information according to the anomaly detection result and sending the maintenance prompt information to the management terminal. According to the invention, timely early warning of the abnormal state of the mold can be realized.
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