Component Mounting Device Abnormality Detection via Sleeve Movement
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Solution Overview
Problem
Existing component mounting devices struggle to effectively detect abnormalities in component holding members, particularly due to limitations in detecting movement resistance changes during the mounting process.
Innovation Solution
A component mounting device comprising a head main body, a shaft, a sleeve, a component holding section, a first elastic member, and a second elastic member, where the detecting section monitors the relative movement between the sleeve and the shaft to determine abnormal states by lifting and lowering the shaft, allowing for the detection of movement resistance changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the detection means detects the position of the tip portion of the pickup member with respect to the main body portion of the pickup member, then the abnormality of the pickup member can be detected, but the detection accuracy is insufficient to reliably distinguish abnormal movement resistance
Solution Approach 1:
The patent introduces a sleeve as an intermediary component between the shaft and the component holding section. The sleeve acts as a mediator that transmits and isolates movement resistance signals, allowing the detection means to accurately measure relative movement between the shaft and sleeve rather than directly measuring the component holding section, thereby improving detection accuracy and reliability
Solution Approach 2:
The patent replaces direct mechanical connection and measurement with a mechanical system involving elastic members and relative movement detection. By using the elastic member to bias the sleeve and detecting relative movement between shaft and sleeve, the system substitutes direct force measurement with indirect movement detection, improving the reliability of abnormality detection
2Device complexity
If the component holding member structure is simplified, then the device complexity is reduced, but the ability to detect movement resistance abnormalities is compromised
Solution Approach 1:
The patent segments the component holding member into distinct functional parts: the shaft for lifting and lowering, the sleeve for relative movement, and the component holding section. This segmentation allows each part to perform its specific function while enabling detection of movement resistance abnormalities without requiring a completely complex structure
Solution Approach 2:
The elastic member automatically biases the sleeve to maintain proper positioning during operation. The system uses its own operational movements to generate the detection signal, eliminating the need for additional external actuators or complex sensing mechanisms, thus maintaining simplicity while ensuring detection capability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables reliable detection of abnormalities in component holding members by distinguishing between normal and abnormal movement resistance states, ensuring accurate component mounting and reducing the risk of errors.
Implementation Method 1
The first elastic member biases the sleeve positioned at a lower end of the shaft toward a lower side in the vertical direction
Implementation Method 2
The second elastic member biases the component holding section positioned at the lower end of the sleeve toward the lower side
Data Source
Figure 1
Figure 2
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AI summary
A component mounting device includes a head main body, a shaft, a sleeve, a component holding section, a first elastic member, a second elastic member, and a detecting section. The shaft is provided on the head main body so as to be lifted and lowered. The sleeve is provided so as to be movable relative to the shaft in a vertical direction. The component holding section is provided so as to be movable relative to the sleeve in the vertical direction. The first elastic member biases the sleeve positioned at a lower end of the shaft toward the lower side in the vertical direction. The second elastic member biases the component holding section positioned at the lower end of the sleeve toward the lower side. The detecting section detects whether the sleeve has moved relative to the shaft when the component held by the component holding section is mounted to a board by lifting and lowering the shaft.