Seam inspection device
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Solution Overview
Problem
In sewing factories, seam inspection is typically done after the entire sewing process is completed, leading to discarded products and reduced productivity, as abnormalities in seams are only detected at the end, rather than during the process, allowing for rework.
Innovation Solution
A seam inspection device comprising an imaging device that captures images of the sewing object and a processing device that detects abnormalities in real-time, allowing for immediate correction during the sewing process, thereby preventing productivity loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If seam inspection is performed after the entire sewing process is completed, then inspection thoroughness is improved, but productivity deteriorates due to discarded products and inability to perform rework
Solution Approach 1:
The imaging device captures images of the sewing object at multiple positions (first position during sewing, second position after sewing) to detect abnormalities before the sewing process is fully completed. This preliminary detection enables rework while the object is still in the sewing process, preventing productivity loss from discarded products.
Solution Approach 2:
The processing device analyzes images captured during the sewing process and provides feedback about seam abnormalities. This feedback mechanism allows the sewing process to be adjusted or restarted if abnormalities are detected, enabling continuous improvement and reducing waste.
2Productivity
If seam inspection is performed in the middle of the sewing process using imaging device, then productivity is improved by enabling rework, but inspection precision may worsen due to partial imaging
Solution Approach 1:
The system performs preliminary imaging at a first position during the sewing process to detect abnormalities early. This is complemented by additional imaging at a second position after sewing is completed, ensuring comprehensive inspection while maintaining productivity benefits from early detection.
Solution Approach 2:
The imaging device continuously or repeatedly captures images at different positions and timings (during and after sewing). This continuous imaging approach ensures that no abnormality is missed while maintaining the productivity advantage of early detection and rework capability.
Data Source
AI summary
A seam inspection device includes an imaging device and a processing device. The imaging device shoots a sewing object supported by a throat plate of a sewing machine and having seams formed therein. And the processing device detects an abnormality of the seam based on an image of the sewing object acquired by the imaging device.