Pick-and-Place Device Packaging Pitch Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mounting devices face challenges in accurately determining the component packaging pitch due to difficulties in distinguishing between component and tape regions, leading to errors in component recognition and potential loss of usable components.
Innovation Solution
The detection device integrates the brightness of multiple rows in pre-pickup and post-pickup images to acquire a reference pattern, allowing for reliable determination of the packaging pitch by identifying the component region and position, thereby improving the accuracy of component placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the packaging pitch is determined by imaging and recognition processes, then the component placement can be automated, but the packaging pitch is erroneously recognized due to difficulty in distinguishing component and tape regions
Solution Approach 1:
The patent captures a pre-pickup image before the mounting head removes the component, showing the component in its original position on the tape. This preliminary image is combined with a post-pickup image to create a reference pattern that clearly shows component boundaries and tape structure, enabling accurate pitch measurement without confusion between component and tape regions.
Solution Approach 2:
The patent merges the pre-pickup image and post-pickup image to generate a reference pattern. By combining these two images, the component region is clearly defined (present in pre-pickup but absent in post-pickup at the same position), while the tape region remains consistent, thereby eliminating ambiguity in distinguishing component from tape and enabling accurate pitch recognition.
2Device complexity
If the component region and tape region are difficult to distinguish in the captured image, then the imaging process can be simplified, but the packaging pitch recognition becomes erroneous
Solution Approach 1:
The patent captures a pre-pickup image before component removal, preserving the component-tape spatial relationship. This preliminary capture is then processed by subtracting the post-pickup image to generate a reference pattern that automatically highlights component regions, eliminating the need for complex real-time differentiation algorithms during pitch measurement.
Solution Approach 2:
The patent creates a reference pattern copy by processing the pre-pickup and post-pickup images. This reference pattern serves as a template that clearly represents component positions and tape structure, allowing accurate pitch measurement through pattern matching without requiring the imaging system to directly distinguish between component and tape regions in real-time.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A mounting device, comprising: a mounting section on which a feeding unit is installed to supply components by feeding a packaging member where the components are packaged at predetermined intervals; a mounting head configured to pick up a component from the packaging member; an imaging section configured to image the packaging member; and a control section configured to obtain a packaging pitch based on a reference pattern of the packaging member with the packaged components, the reference pattern being acquired based on a pre-pickup image which is a captured image of the packaging member before picking up a component, and a post-pickup image which is a captured image of the packaging member after picking up the component.