Component Mounter Automatic Nozzle Type Selection
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Solution Overview
Problem
Conventional component mounters exchange nozzles of the same type when abnormalities occur, which may not resolve issues if the problem is due to the nozzle type being unsuitable for the task, leading to ongoing operational issues.
Innovation Solution
A component mounter equipped with an abnormality detecting section and a selection section that can choose a different type of mounting tool, such as a nozzle with a larger capacity, to address positional or posture deviations of electronic components, allowing for continuous operation by exchanging the nozzle with a suitable type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the nozzle is exchanged for another nozzle of the same type when abnormality is detected, then the nozzle defect is addressed, but the abnormality remains unsolved if the issue is due to unsuitable nozzle type
Solution Approach 1:
The head is designed to accommodate multiple types of mounting tools (nozzles, dispensing tools, gripping tools) and can be automatically exchanged between different tool types. This multi-functionality allows the system to adapt to different abnormality conditions by selecting appropriate tool types, resolving the limitation of fixed nozzle type usage.
Solution Approach 2:
The system changes the type parameter of the mounting tool based on detected abnormality conditions. When positioning abnormality is detected, the system switches from a positioning-type nozzle to a different type of mounting tool, thereby changing the tool parameter to match the required function and resolve the abnormality.
2Adaptability or versatility
If the mounting tool type is fixed, then the system structure is simple, but the system cannot adapt to different abnormality conditions requiring different tool types
Solution Approach 1:
The system performs automatic tool exchange based on abnormality detection results without requiring manual intervention. The control unit automatically selects and exchanges the appropriate mounting tool type, enabling the system to serve itself in adapting to different conditions, thereby reducing operational complexity despite the added mechanical capability.
Solution Approach 2:
The mounting tool configuration is made dynamic rather than fixed. The system can change the mounting tool type during operation based on detected conditions, transforming the static tool configuration into a dynamic one that adapts to varying requirements, thus improving versatility without permanent structural complexity.
3Productivity
If manual intervention is required for tool exchange, then the exchange process is simple and direct, but continuous operation is interrupted and productivity decreases
Solution Approach 1:
The system incorporates abnormality detection that provides feedback to the control unit, which then automatically initiates the appropriate tool exchange. This feedback loop enables continuous operation by detecting issues and responding automatically, maintaining productivity while increasing automation level through the closed-loop control mechanism.
Solution Approach 2:
Multiple types of mounting tools are pre-prepared and stored in the head assembly, ready for immediate exchange when abnormality is detected. This preliminary preparation of alternative tools eliminates the need for manual tool retrieval and setup, enabling continuous automatic operation while maintaining the simplicity of direct tool replacement.
Data Source
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AI summary
A component mounter mounts an electronic component on a circuit board. The component mounter includes a mounting tool configured to receive the electronic component in a component supply position and release the electronic component so received in a predetermined position on the board; an accommodation section accommodating mounting tools of multiple types; a head configured to detachably mount thereon a single mounting tool selected from the mounting tools of multiple types accommodated in the accommodation section; a moving mechanism configured to move the head between the component supply position and the predetermined position on the board; an abnormality detecting section configured to detect abnormality in relation to the mounting tool; and a selection section configured to select the mounting tool to be mounted on the head, and select a mounting tool of a second type, which differs from the mounting tool of a first type which is being mounted on the head, when the abnormality is detected by the abnormality detecting section.