Component Mounting Apparatus Optical Alignment Filter

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Solution Overview

Problem

Existing component mounting apparatuses face challenges in accurately determining the position and orientation of both components and substrates due to the need for separate cameras and fixed light sources, leading to potential misalignment and damage during mounting.

Innovation Solution

A component mounting apparatus utilizing a combination of first and second light sources, a filter, and an image capturer to detect infrared/ultraviolet light from components and visible light from Fiducial marks on substrates, with light guides to prevent overlap, allowing for precise alignment and mounting through a single image capturing unit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If separate cameras are used to determine positions and orientations of component and substrate, then measurement capability is provided, but device complexity increases

Engineering Contradiction:

Improveposition and orientation detection accuracyVSAvoidcamera system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines multiple cameras into a single camera system that captures images of both the component and substrate simultaneously. The image processing unit then separates and analyzes the images to determine positions and orientations, reducing device complexity while maintaining measurement precision.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

A single camera system is designed to perform multiple functions: capturing images of the component, capturing images of the substrate, and providing measurement data for both. This multi-functional approach eliminates the need for separate dedicated cameras for each object.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Device complexity

If fixed camera positions are used, then device complexity is reduced, but measurement precision deteriorates due to potential misalignment

Engineering Contradiction:

Improvecamera positioning complexityVSAvoidcomponent and substrate alignment accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The camera system is designed with movable and adjustable positioning capabilities, allowing dynamic adjustment of camera position and angle to achieve optimal alignment for capturing images of both the component and substrate accurately.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system uses image processing to analyze captured images and determine the actual positions and orientations of the component and substrate. This feedback information can be used to adjust camera positioning or correct measurements to compensate for misalignment.

Inventive Principle:

Principle #23Feedback

3Illumination intensity

If light sources are positioned to illuminate both component and substrate, then illumination is provided, but harmful interference occurs between light paths

Engineering Contradiction:

Improvelight coverage for imagingVSAvoidlight path interference

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The illumination system is segmented into separate light sources for the component and separate light sources for the substrate. This segmentation allows independent control of light paths, preventing interference between the two imaging processes while ensuring adequate illumination for each object.

Inventive Principle:

Principle #1Segmentation

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 accurate detection and alignment of both component and substrate positions and orientations, minimizing structural complexity and ensuring precise mounting without interference, thus improving the accuracy and efficiency of the component mounting process.

Implementation Method 1

a filter configured to transmit the first light reflected by the component through the filter and reflect the second light reflected by the Fiducial mark

Methodology Applied

Scientific EffectOptical filtering: Filter (optical)

Implementation Method 2

a first light guide configured to reflect the first light at least once and configured to guide the first light to the filter

Methodology Applied

Scientific EffectLight reflection and guidance: Reflection

Implementation Method 3

a second light guide configured to refract the second light and configured to guide the second light to the filter

Methodology Applied

Scientific EffectLight refraction: Refraction

Implementation Method 4

a suction configured to adsorb and transport a component

Methodology Applied

Scientific EffectSuction: Suction

Data Source

PatentUS11001461B2Component mounting apparatus

Publication Date: 2021.05.11 HANWHA PRECISION MACHINERY CO LTD

AI summary

A component mounting apparatus includes a component mounting unit including a suction configured to adsorb and transport a component; a first light source configured to emit first light to the component; a second light source configured to emit second light to a Fiducial mark of a substrate; a filter configured to transmit the first light reflected by the component through the filter and reflect the second light reflected by the Fiducial mark; and an image capturer configured to detect the first light transmitted through the filter and the second light reflected by the filter.