Component Mounting Device Inspection Sequence
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Solution Overview
Problem
In component mounting apparatuses, there is a concern that if a defect occurs in the middle of a mounting step, all components mounted after that step may be wasted, as existing systems do not consider defects occurring during the process and lack efficient inspection and mounting strategies to prevent unnecessary component waste.
Innovation Solution
The apparatus employs an inspection system that checks the state of 'check unnecessary' components first, allowing 'check necessary' components to be mounted only after confirming the normalcy of the previous components, and includes imaging for parallel inspection and mounting processes, enabling efficient management of component mounting orders based on importance and necessity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If inspection is performed for all components before mounting, then component waste is prevented, but mounting efficiency is reduced due to sequential processing
Solution Approach 1:
The patent segments components into two categories: check unnecessary components (first group) and check necessary components (second group). This segmentation allows the inspection process to be selectively applied only to the second group, preventing waste of expensive components while avoiding inspection delays for cheaper components, thus resolving the contradiction between preventing component waste and maintaining mounting efficiency.
Solution Approach 2:
The patent performs preliminary mounting of check unnecessary components without inspection, and only performs inspection and conditional mounting for check necessary components. This preliminary action approach allows the majority of components to be mounted without inspection delays, while still preventing waste of expensive components through selective inspection of the second group.
2Reliability
If inspection is performed sequentially before each mounting step, then defect detection is ensured, but mounting time increases
Solution Approach 1:
The patent divides components into two groups based on inspection necessity. Check unnecessary components are mounted without prior inspection, while check necessary components undergo inspection before mounting. This segmentation ensures defect detection for critical components while reducing overall mounting time by eliminating unnecessary inspection steps for non-critical components.
Solution Approach 2:
Instead of performing full inspection for all components, the patent applies partial inspection only to the second group of check necessary components. This partial action approach maintains reliability for critical components while significantly reducing the total inspection time and mounting time.
Data Source
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AI summary
In a case where check unnecessary components (chip components a to c) that do not require checking of the mounted states of the other components before being mounted and check necessary components (die components X and Y) that require checking of the mounted states of the other components before being mounted are mounted on a board, the check unnecessary components are mounted first and the mounted state of each component is inspected. When mounting of the check unnecessary components is completed, the check necessary components are mounted after it is checked that the mounted states of the check unnecessary components are normal based on the inspection results. Therefore, in a case where the mounted states of the check unnecessary components are not normal, the check necessary components are not mounted on the board, thereby preventing the check necessary components from being wastefully consumed.