Quality Management for Surface Mounting Lines
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Solution Overview
Problem
Existing quality management systems in surface mounting lines struggle to accurately identify the factors causing defects before the solder bonding process, leading to delayed detection of quality issues and inefficiencies in correcting mounting parameters.
Innovation Solution
A quality management apparatus that includes a defective factor estimator, quality determination unit, and parameter changer to analyze inspection results from multiple stages, identifying potential defects and adjusting parameters in real-time to prevent quality deterioration by associating defects with specific inspection items and processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If inspection is performed only after solder bonding, then detection simplicity is maintained, but defect detection timing is delayed and quality management efficiency deteriorates
Solution Approach 1:
The system performs preliminary inspection of solder printing quality and component mounting status before the solder bonding process. By detecting potential defects in advance (such as insufficient solder amount, misalignment, or missing components), the system enables early intervention and parameter correction, preventing defective products from reaching the final bonding stage and thereby reducing rework time and improving overall quality management efficiency.
2Reliability
If multiple inspection stages are implemented, then quality monitoring capability is improved, but system complexity increases
Solution Approach 1:
The quality management system is segmented into distinct functional modules: a solder printing inspection unit that captures and analyzes solder pattern images, a component mounting inspection unit that verifies component placement, and a central control unit that integrates data from both stages. This segmentation allows each module to perform its specific inspection function independently, improving overall reliability while keeping individual components manageable and the system architecture clear.
3Manufacturing precision
If real-time parameter correction is implemented, then manufacturing precision is improved, but control system complexity increases
Solution Approach 1:
The system establishes a feedback loop where inspection results from the solder printing and component mounting stages are automatically analyzed by the control unit. When deviations from standard parameters are detected (such as solder amount variations or mounting position errors), the control unit automatically generates correction instructions and transmits them back to the relevant equipment, enabling real-time parameter adjustment without manual intervention and thereby improving manufacturing precision.
Data Source
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AI summary
A quality management apparatus that manages a surface mounting line including a solder printing apparatus configured to print solder on a printed circuit board, a mounter configured to dispose an electronic component on the printed circuit board, a first inspection apparatus configured to inspect a solder printing state and an electronic component disposition state, a reflow furnace configured to perform solder bonding, and a second inspection apparatus configured to inspect a solder bonding state, the quality management apparatus includes: a defective factor estimator configured to extract, when the second inspection apparatus detects a defect, an inspection item that is estimated to be associated with the defect in inspection items inspected with the first inspection apparatus; a quality determination unit configured to acquire an inspection result corresponding to the extracted inspection item, and to determine whether the inspection result indicates an abnormality; and a parameter changer configured to decide a parameter to be changed and a content of the parameter in parameters used in the solder printing apparatus or the mounter when the inspection result indicates the abnormality.