Work Machine Polarity Detection via Splicing Point Imaging
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Solution Overview
Problem
Existing methods for mounting lead components onto a board often fail to ensure correct polarity, leading to improper function and efficiency issues.
Innovation Solution
A work machine equipped with a tape feeder, imaging device, and control device that identifies and adjusts the polarity of lead components by imaging identification marks on the components and determining the correct mounting angle based on image data, ensuring accurate polarity alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the imaging device images the identification object at a fixed position, then the imaging process is simple, but the polarity detection may be inaccurate when splicing points are involved
Solution Approach 1:
The detection device detects the splicing point position in advance before the imaging device captures the identification object. This preliminary detection allows the control device to calculate and set the appropriate imaging position based on the splicing point location, ensuring accurate polarity detection without missing the identification object due to splicing interruptions.
Solution Approach 2:
The control device uses feedback from the detection device about splicing point positions to dynamically adjust the imaging position. The control device calculates the distance from the splicing point and determines the optimal position for imaging the identification object, creating a closed-loop system that adapts to varying tape configurations.
2Productivity
If the tape feeder supplies components at high speed, then productivity increases, but the accuracy of polarity detection may decrease
Solution Approach 1:
The system performs preliminary detection of the splicing point and pre-calculates the imaging position before the tape feeder supplies the next component. This allows the imaging and detection processes to be prepared in advance, maintaining high detection accuracy even as the tape feeder operates at high speeds without waiting for each component to be fully supplied.
3Reliability
If the imaging position is not adjusted based on splicing points, then the imaging process is faster, but the identification object may be imaged incorrectly or missed
Solution Approach 1:
The control device calculates the imaging position in advance based on the detected splicing point location, before the imaging device needs to capture the identification object. This preliminary calculation ensures that when the imaging device operates, it is already positioned correctly, preventing missed or incorrect imaging while minimizing time loss through proactive positioning.
Data Source
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AI summary
There is provided a work machine including: a tape feeder provided with taped components, consisting of taped lead components having multiple leads, in an extended manner and configured to supply the lead components in a state of being detached from the taped components extended to a supply position; a mounting head configured to mount the lead components supplied by the tape feeder onto a board; an imaging device; and a control device, the control device having an imaging section configured to image an identification object with the imaging device, the identification object being written on the taped components extended to the tape feeder and capable of identifying the polarity of each of the multiple leads, and a determination section configured to determine whether an actual polarity disposition, which is the polarity disposition of each of the multiple leads in the taped components extended to the tape feeder, and a set polarity disposition, which is the polarity disposition of each of the multiple leads set in advance, match each other based on image data obtained by imaging with the imaging section.