Component Mounting Accuracy Setting Based on Nearby Component State
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Solution Overview
Problem
Conventional component mounters determine required accuracy without considering the surrounding state of components on a board, leading to inaccuracies in mounting, especially when nearby components are present or when there are deviations in solder printing.
Innovation Solution
A required accuracy setting device that adjusts the accuracy based on nearby state data, including component spacing distance, nozzle protrusion, and positional relationships, to ensure precise mounting and prevent interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If required accuracy is determined based on fixed factors (process type, component type and size), then the setting process is simple and fast, but the accuracy does not adapt to actual surrounding conditions causing mounting interference
Solution Approach 1:
The patent applies dynamics by making the required accuracy setting dynamic rather than fixed. The control device automatically adjusts the required accuracy for each component based on real-time analysis of surrounding components' positions and sizes. This allows the mounting system to adapt its precision requirements to each specific mounting context, resolving the contradiction between maintaining high mounting speed and achieving appropriate mounting accuracy for each component's actual surroundings.
Solution Approach 2:
The patent changes the parameter of required accuracy based on varying conditions. Instead of using a single fixed accuracy parameter for all components, the system calculates and sets different required accuracy values for each component based on factors such as the positions and sizes of nearby components. This parameter adaptation allows the system to maintain high productivity while ensuring each component is mounted with the appropriate level of precision for its specific mounting environment.
2Manufacturing precision
If required accuracy is set to high precision for all components, then mounting accuracy is improved, but mounting time and processing complexity increase
Solution Approach 1:
The patent applies local quality by setting different required accuracy levels for different components based on their specific mounting contexts. Instead of uniformly applying high precision to all components, the system analyzes each component's surrounding environment and sets the appropriate accuracy level locally. This allows high accuracy to be applied only where necessary (when components are closely spaced or have complex geometries) while using lower accuracy settings for components with more forgiving mounting environments, thereby reducing overall mounting time while maintaining necessary precision.
3Device complexity
If required accuracy is set without considering nearby components, then the setting process is simple, but interference occurs between target component and nearby components
Solution Approach 1:
The patent implements feedback by having the control device automatically analyze the positions and sizes of nearby components and use this information to determine the appropriate required accuracy for each target component. The system feeds back the surrounding component information to the accuracy setting process, creating a closed-loop system that adapts to actual mounting conditions. This feedback mechanism ensures mounting reliability by preventing interference between components while keeping the setting process automated and relatively simple.
Solution Approach 2:
The system applies self-service by automatically determining the required accuracy for each component without requiring manual intervention or complex external calculations. The control device itself performs the analysis of surrounding components and sets the appropriate accuracy parameters autonomously. This self-service capability maintains mounting reliability while avoiding the complexity of manual accuracy setting procedures.
Data Source
AI summary
A CPU of a management computer sets an nth component in a mounting operation order of the current sequence as a target component, calculates nearby state data of the target component, sets the required accuracy of the target component based on the nearby state data and memorizes the required accuracy of HDD. Because the required accuracy is automatically set based on the nearby state data in this manner, the set required accuracy matches actual circumstances better compared to than with conventional technology. Therefore, it is possible to automatically set appropriate required accuracy of a target component.