Dental Appliance Sorting and Sequencing With RFID Buffer Grouping
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Solution Overview
Problem
Current sorting devices are inefficient in handling and packaging unique or customized parts, often requiring manual sorting to ensure accuracy, which hampers productivity and efficiency in mass production processes.
Innovation Solution
A system that includes a load cell for part distribution and orientation, a sorting buffer for grouping, and a sequencing system to accumulate and arrange parts correctly, utilizing RFID tagging and conveyor systems to automate the sorting and sequencing of mass-produced, customized objects like dental aligners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated sorting devices are used for mass produced parts, then productivity is improved, but they cannot handle unique or customized parts requiring manual sorting
Solution Approach 1:
The sorting system is designed to handle both standard mass-produced parts and unique customized parts through a universal platform. The system uses RFID tags and vision systems to identify and sort different part types, allowing the same automated infrastructure to adapt to various part configurations and customization requirements without requiring separate manual sorting processes.
Solution Approach 2:
The system enables parts to be automatically identified and sorted based on their unique characteristics through RFID tagging and vision recognition. Each part carries identification information that allows the system to self-determine the correct sorting destination, eliminating the need for manual intervention even with customized parts.
2Measurement precision
If manual sorting is used for customized parts, then accuracy is improved, but productivity decreases
Solution Approach 1:
The system replaces manual mechanical sorting with automated identification and routing mechanisms. RFID readers and vision systems automatically detect part characteristics and trigger appropriate sorting actions, maintaining high accuracy while enabling automated high-speed processing that exceeds manual sorting capacity.
Solution Approach 2:
The system incorporates feedback loops where RFID tags and vision systems continuously monitor part identification, and the control system adjusts sorting decisions in real-time. This feedback mechanism ensures accurate sorting of customized parts while maintaining automated throughput, as the system learns from and adapts to part variations.
3Device complexity
If traditional sorting devices are used, then device complexity is reduced, but they cannot provide sequencing functionality for associated parts
Solution Approach 1:
The system combines sorting and sequencing functions into a single integrated platform. The same RFID identification and control infrastructure that enables sorting also provides sequencing capabilities, allowing associated parts to be grouped and ordered correctly without requiring separate complex subsystems.
Solution Approach 2:
The sorting device is designed as a multi-functional system that can perform both sorting and sequencing operations. The control system manages multiple functions including identification, sorting to different discharge areas, and sequencing of associated parts, all through a unified device architecture rather than separate specialized machines.
Data Source
AI summary
Methods for controlling the sorting and sequencing of objects are provided. In some embodiments, a method includes receiving sensor data of a plurality of dental appliances, each dental appliance associated with an identifier including (a) group data indicating a group to which the dental appliance belongs, and (b) sequence data indicating a sequential position for the dental appliance within the group. The method can include controlling a sorting cell to direct each dental appliance into one of a plurality of buffer locations based on the group data for the dental appliance, where each buffer location is configured to hold a set of dental appliances belonging to the same group; and controlling a sequencing cell to sequence the set of dental appliances associated with each buffer location by placing each dental appliance into a position within the corresponding set of dental appliances based on the sequence data for the dental appliance.