Component Mounting Machine Suction Angle Detection
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Solution Overview
Problem
Existing component mounting machines face difficulties in accurately determining the suction posture of components due to limited detection points, leading to incorrect assessment of inclined sections, especially when the difference in height between detected points is minimal.
Innovation Solution
A component mounting machine equipped with a suction nozzle, an imaging device, and a control device that images the component from the side, detects multiple positions of the lower edges, including the lowermost end position, to determine the suction angle and posture, thereby preventing erroneous detection and ensuring accurate mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only two points are used for height detection, then the detection process is simple, but the accuracy of determining suction posture deteriorates
Solution Approach 1:
The lower edge detection is segmented into multiple discrete points rather than using only two points. The control device detects multiple positions of the lower edge including the lowermost end position, dividing the detection task into several measurement points that collectively provide more accurate posture determination.
Solution Approach 2:
The detection approach transitions from a one-dimensional two-point measurement to a multi-point measurement along the lower edge. By detecting multiple positions rather than just two heights, the system adds dimensional information about the component's orientation and inclination.
2Measurement precision
If multiple lower edge positions are detected, then the suction angle detection accuracy is improved, but the processing complexity increases
Solution Approach 1:
The control device extracts the lowermost end position from the multiple detected lower edge positions. By identifying and extracting this critical reference point, the system simplifies the subsequent angle calculation process while maintaining high detection accuracy based on the multi-point data.
Solution Approach 2:
The system changes the parameter representation from raw multiple position data to a calculated suction angle. By transforming the multiple detection positions into an angular parameter relative to the lowermost end position, the complexity is managed through parameter transformation rather than direct multi-point processing.
3Speed
If height detection is performed based on limited points, then the detection speed is fast, but the reliability of mounting determination deteriorates
Solution Approach 1:
The control device performs preliminary detection of multiple lower edge positions before final posture determination. By pre-detecting and storing multiple position data points, the system prepares comprehensive information in advance, enabling reliable mounting decisions without sacrificing detection speed in the main process.
Data Source
AI summary
There is provided a component mounting machine in which when detecting a lowermost end position of a component sucked by a suction nozzle, a lower edge position of the component is detected at predetermined intervals from a left side and a right side using the lowermost end position as a reference. The component mounting machine derives an approximate straight line obtained by approximating multiple lower edge positions detected from the side having a larger detection number and the lowermost end position and an angle of the approximate straight line is detected as the suction angle of the component. Accordingly, the component mounting machine can appropriately detect the suction angle of the component with a simple process and correctly determine the suction posture of the component.