Suction Nozzle Position Correction for Component Mounting Tilt
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Solution Overview
Problem
Existing operation machines with holding tools face challenges in accurately estimating the moving direction tilt during raising and lowering, which affects the precision of component holding and mounting work.
Innovation Solution
An operation machine equipped with a holding head, an imaging device, and a control device that includes first and second operation control sections and imaging sections to calculate the position deviation of components loaded at different heights, allowing for precise adjustment and correction of the holding tool's tilt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the moving direction tilt of the holding tool is calculated based on imaging data from components at different heights, then the precision of component holding and mounting work is improved, but the device complexity increases due to the addition of multiple imaging sections and control sections
Solution Approach 1:
The patent introduces a vertical height dimension by using multiple imaging sections positioned at different heights to capture images of components. This multi-dimensional imaging approach enables accurate calculation of moving direction tilt by comparing positional relationships across different height levels, thereby resolving the technical contradiction between improved precision and increased device complexity through spatial dimensionality rather than adding complex mechanical or control systems
2Measurement precision
If multiple imaging sections are added to capture components at different heights, then the accuracy of tilt estimation is improved, but the loss of time increases due to multiple imaging operations
Solution Approach 1:
The patent implements preliminary action by having multiple imaging sections simultaneously capture images of components at different heights in advance, before the actual tilt calculation is performed. This parallel imaging approach eliminates sequential delays, allowing all necessary images to be captured concurrently, thereby improving measurement precision without proportionally increasing the time loss
Data Source
AI summary
If the moving direction of a suction nozzle during raising and lowering deviates from a vertical direction, appropriate work cannot be guaranteed because the holding position of a component by the suction nozzle will vary depending on the holding height of the component by the suction nozzle. Thus, a component loaded at a specified height (H) position from the upper surface of a stage is held by a suction nozzle, and that component is loaded at a specified position. Then, the component is imaged and the loading position (first height component loading position) of the component is calculated. Further, the component loaded on the stage is held by the suction nozzle and the component is loaded at the above specified position. Then, the component is imaged and the component loading position (second height component loading position) is calculated. Next, the deviation amount between the first height component loading position and the second height component loading position is calculated. Thus, appropriate mounting can be guaranteed by performing correction of the component holding position, correction of the component loading position, or the like, based on the deviation amount.