Nozzle Type Switching in Component Mounters for Mounting Abnormalities
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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 mounting task, leading to ongoing operational issues.
Innovation Solution
A component mounter with an abnormality detecting section and a selection section that can choose a different type of mounting tool from an accommodation section, allowing for the exchange of nozzles to a type that can handle larger components or improve posture deviations, ensuring proper mounting without operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a nozzle of the same type is exchanged when abnormality is detected, then the nozzle replacement process is simple and quick, but the abnormality may not be resolved if the issue is due to the nozzle type being unsuitable for the mounting task
Solution Approach 1:
The system changes the nozzle type parameter (from same type to different type) when abnormality is detected. The selection section selects a nozzle of a different type from the accommodation section based on abnormality information, thereby resolving issues that cannot be fixed by simply replacing with the same type of nozzle
Solution Approach 2:
The system dynamically adjusts the nozzle selection strategy based on the detected abnormality. Instead of a fixed same-type replacement rule, the system adapts by selecting different nozzle types according to the specific abnormality conditions, making the replacement process flexible and effective
2Reliability
If a nozzle of a different type is selected when abnormality is detected, then the abnormality can be properly resolved, but the device complexity increases due to multiple nozzle types and selection logic
Solution Approach 1:
The head is designed to accommodate multiple types of nozzles universally. The accommodation section stores nozzles of different types, and the head can detachably mount any of these nozzle types, making the system multi-functional and adaptable to different mounting requirements
Solution Approach 2:
The selection section acts as an intermediary between the abnormality detecting section and the nozzle accommodation section. It processes abnormality information and selects the appropriate nozzle type, thereby managing the complexity through a dedicated control component that coordinates between detection and execution
3Device complexity
If the same type of nozzle is used, then the device structure is simple, but positional deviation and posture deviation of components cannot be properly corrected
Solution Approach 1:
Different nozzle types are designed with specific local qualities suited for different component types and mounting requirements. By selecting the appropriate nozzle type based on the component being mounted and the detected abnormality, the system achieves high manufacturing precision for each specific mounting task
Data Source
AI summary
A component mounter includes a mounting tool to receive the electronic component in a component supply position and release the electronic component at 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 the multiple types in the accommodation section; a moving mechanism to move the head between the component supply position and the predetermined position on the board; an abnormality detecting section to detect an abnormality in relation to the mounting tool; and a selection section 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.