A method for detecting the connection strength of the injection molded shell of a washing machine

By conducting group testing and multi-stage quality evaluation on the shell of the injection molded parts of the washing machine, the problem of failure to effectively evaluate the connection fit strength in the prior art is solved, and an accurate evaluation and early warning of the quality of the shell of the injection molded parts of the washing machine is achieved to ensure the stability and safety of the product during use.

CN118980511BActive Publication Date: 2025-03-25JIANGSU BRAUN INTELLIGENT LASER TECH CO LTD
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Patent Information

Application Number
CN202411463959.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-21
Publication Date
2025-03-25
Estimated Expiration
2044-10-21

AI Technical Summary

Technical Problem

The prior art fails to effectively evaluate the connection matching strength of the shell of the injection molded parts of the washing machine, which may require rework or scrapping during the after-sales process, resulting in waste of resources, and it is difficult to intuitively reflect the degree of connection firmness, which may lead to loose or separate connection parts during use of the product.

Method used

A method for detecting the strength of the shell connection matching of the washing machine injection molded parts is proposed, including sample grouping testing, test data collection before and after connection, test data analysis and sample quality warning. Through compressive strength test, ultrasonic test, tension test, vibration test and stress test, the compressive strength, defect degree, coordination strength, performance fluctuation degree and load-bearing capacity data of the sample are obtained, and these data are analyzed to determine whether the quality of the sample is qualified.

Benefits of technology

This method can ensure that the quality evaluation of the shell of the injection molded part of the washing machine in the production batch is sufficient, the deviation caused by single sample testing is reduced, the accuracy and reliability of the evaluation is improved, and problems in the production process are discovered and repaired in a timely manner, large-scale recalls and rework are avoided, production costs are reduced, and the products can withstand corresponding external forces during use.

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Abstract

The present invention belongs to the field of quality monitoring, and relates to a method for detecting the connection and matching strength of the outer shell of a washing machine injection molded part. The method comprises: the quality monitoring process of the outer shell of the washing machine injection molded part comprises four steps: sample grouping test, data collection, analysis and quality warning. First, randomly select samples for grouping and conduct mechanical stress, ultrasonic, tensile, vibration and pulling tests. Subsequently, collect various test data, such as bearing capacity, degree of defects, matching strength, performance fluctuation and degree of cracking, etc. Then, analyze these data to calculate the bearing capacity index, degree of defects index, matching strength index, performance fluctuation degree index and degree of cracking index. Finally, the quality compliance index before and after the connection is comprehensively considered to evaluate the overall quality of the outer shell of the washing machine injection molded part, and judge whether it is qualified based on this, and issue a warning in time. This process ensures the quality control and problem warning of the outer shell of the injection molded part in the production process.
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