Spinning System Bobbin Ejection for Quality Control
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Solution Overview
Problem
The frequent detection of yarn defects in spinning bobbins leads to repeated stopping and ejecting of off-quality bobbins, reducing the operating efficiency of automatic winders in spinning systems.
Innovation Solution
A spinning system with a transportation guide path and an ejection device that identifies and ejects off-quality bobbins to a separate path, preventing them from being wound, while allowing high-quality bobbins to be processed without interruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the winding unit repeatedly stops to eject off-quality bobbins and perform yarn joining, then yarn quality control is improved, but operating efficiency deteriorates
Solution Approach 1:
The system performs preliminary quality assessment of spinning bobbins before they enter the winding unit. By using a determination unit to evaluate bobbin quality in advance and storing the results, the winding unit can proactively identify and eject off-quality bobbins before yarn defects occur, preventing the need for repeated stopping and yarn joining operations during winding.
Solution Approach 2:
The system implements a feedback mechanism where quality determination results are stored and referenced during the winding process. The winding unit receives feedback about bobbin quality status and adjusts its operation accordingly, automatically ejecting off-quality bobbins and resuming winding without manual intervention, thus maintaining both quality control and operational efficiency.
2Productivity
If the winding unit processes all spinning bobbins including off-quality ones, then productivity is maintained, but yarn quality deteriorates due to repeated defects
Solution Approach 1:
The determination unit performs preliminary quality assessment of spinning bobbins before they reach the winding unit. Quality results are stored and used to pre-identify off-quality bobbins, allowing the winding unit to maintain high productivity by continuously processing only qualified bobbins while automatically ejecting off-quality ones, thus preventing yarn quality deterioration.
Solution Approach 2:
The system extracts off-quality bobbins from the production flow by automatically identifying them through quality determination and ejecting them from the transportation guide path before they can compromise yarn quality. This separation allows the winding unit to maintain high productivity by focusing only on qualified bobbins while off-quality ones are removed without disrupting the overall process.
Data Source
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AI summary
A spinning system 100 includes an automatic winder 1 and a ring spinning frame 2. The spinning system 100 further includes : a spinning sensor 28, an off-quality bobbin determination unit 11c, and a yarn feeder 12. The spinning sensor 28 is installed in the ring spinning frame 2 to acquire quality information about quality of the spinning bobbin B. The off-quality bobbin determination unit 11c is configured to determine, for each spinning bobbin B, whether the quality of the spinning bobbin B satisfies a predetermined quality standard value, based on the quality information acquired by the spinning sensor 28. The yarn feeder 12 is configured to prevent yarn Y of the off-quality spinning bobbin B1 determined not to satisfy the quality standard value from being wound by the winding unit 10.