Collet Contrast Disk for Pick-and-Place Optical Detection
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Solution Overview
Problem
Pick-and-place machines face difficulties in optically detecting components with similar coloring to their base, leading to inaccurate placement and the need for manual intervention, which increases assembly time and introduces human error.
Innovation Solution
Incorporating a collet disk that reflects light incident on it towards the base surrounding the component, creating a halo effect to enhance optical detection and improve placement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the pick-and-place machine uses optical detection to locate components, then automated placement can be performed, but components with similar coloring to the base cannot be reliably detected
Solution Approach 1:
The collet disk serves as an intermediary element between the nozzle and the base. It reflects light from the base onto the component, creating a contrasting visual effect that enables the optical detection system to distinguish the component from the base even when they have similar coloring. This mediator resolves the detection problem without affecting the automated placement capability.
Solution Approach 2:
The invention effectively changes the visual contrast between the component and base by using the collet disk to reflect light and create a 'halo effect' around the component. This optical modification allows the detection system to perceive contrast where none naturally exists, solving the measurement precision problem while maintaining automation.
2Reliability
If manual pick-and-placement is used instead of automated machines, then components with similar coloring can be handled, but assembly time increases and human error is introduced
Solution Approach 1:
The collet disk acts as a mediator that enables the automated system to achieve reliability comparable to manual handling by improving optical detection. The light reflection creates sufficient contrast for the detection system to accurately locate components, eliminating human error while maintaining high-speed automated operation.
Solution Approach 2:
By modifying the optical appearance through light reflection and the halo effect, the system achieves reliable component detection without sacrificing productivity. The visual contrast enhancement allows automated machines to operate at full speed with the same reliability previously only achievable through manual handling.
3Measurement precision
If the collet disk reflects light to create contrast, then optical detection is improved, but additional optical components are required
Solution Approach 1:
The collet disk serves multiple functions: it is part of the nozzle assembly structure, provides light reflection for detection, and creates the halo effect for contrast enhancement. By making this single component multi-functional, the invention improves detection precision without adding separate optical devices, thus avoiding increased system complexity.
Solution Approach 2:
The invention changes the optical parameters (light reflection properties) of an existing component (the collet disk) rather than adding new components. This parameter modification approach achieves improved detection while maintaining the simplicity of the overall system structure.
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 collet disk increases the contrast between the component and its base, enabling reliable optical detection and precise automated placement, reducing the reliance on manual handling and associated errors.
Implementation Method 1
The collet disk is affixed to a forward facing surface of the body facing the aft face of the head about the tubular element and is configured to reflect light incident thereon toward an area of the base surrounding the component
Data Source
AI summary
A pick-and-place machine module is provided. The pick-and-place machine module includes a nozzle and a collet disk. The nozzle includes a body, a head and a tubular element extending between the body and the head such that the head is communicative with the body via the tubular element to enable a pick-up of a component by the head. The collet disk is affixed to a surface of the body facing the head about the tubular element and is configured to reflect light incident thereon toward an area of the base surrounding the component.