Component Mounting Device Posture Determination
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Solution Overview
Problem
Existing component mounting devices face challenges in reliably holding components with abnormal postures protruding in directions intersecting the vertical plane, as current detection methods are inadequate for such orientations, leading to unreliable component placement on substrates.
Innovation Solution
A component mounting device equipped with a component supply device using a component housing member, a head unit with a movable holder, and an image capturing unit that determines abnormal postures by analyzing captured images to prevent unreliable holding, featuring a component posture determination unit that calculates feature amounts based on component, shadow, and housing part areas to accurately assess posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the holder moves quickly to maintain productivity, then production efficiency is improved, but the accuracy of posture determination deteriorates
Solution Approach 1:
The system performs posture determination before the holder reaches the component supply position. The image capturing unit captures images during the holder's movement, and the determination is completed in advance so that the holder can maintain its moving speed without waiting for posture verification, thus resolving the contradiction between speed and accuracy
Solution Approach 2:
The patent replaces mechanical waiting or deceleration with an optical measurement system (image capturing unit) and computational analysis (component posture determination unit). This substitution allows posture determination to occur during movement rather than requiring the holder to stop or slow down, maintaining productivity while achieving accurate determination
2Measurement precision
If the holder decelerates to improve posture determination accuracy, then measurement precision is improved, but production efficiency deteriorates
Solution Approach 1:
The posture determination is performed as a preliminary action during the holder's approach to the component supply position. By capturing images and analyzing component posture during movement rather than after stopping, the system achieves accurate determination without requiring deceleration, thus avoiding the loss of production efficiency
3Productivity
If the image capturing unit captures images during holder movement, then productivity is maintained, but the stability of image capture deteriorates
Solution Approach 1:
The system transitions from a static image capture approach (requiring holder stopping) to a dynamic capture approach. The image capturing unit is designed to capture images during the holder's movement, with the control unit coordinating the capture timing with the holder's position and speed, thus maintaining productivity while achieving stable determination results
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
The device effectively determines and prevents the placement of components in abnormal postures, ensuring reliable holding and improved substrate production efficiency by decelerating the holder's falling speed during posture determination and avoiding holding operations for components that cannot be securely held.
Implementation Method 1
an image capturing unit configured to capture from above the component supplied to the component supply position to acquire a captured image
Implementation Method 2
a component shadow area representing an image of a shadow of the component; and a housing part area representing an image of the component housing part
Data Source
AI summary
A component mounting device includes a component supply device that supplies a component to a component supply position by using a component housing tape, a head unit provided with a suction nozzle that can be moved up and down, a first image capturing unit that captures the component supplied to the component supply position, and a component posture determination unit that determines the posture of the component supplied to the component supply position. Based on a captured image captured by the first image capturing unit, the component posture determination unit determines whether the component takes an abnormal posture protruding from a component housing part in a direction intersecting the vertical direction on a horizontal plane in the component housing tape.