Automated Dental Aligner Thermoforming System
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Solution Overview
Problem
Traditional thermoforming processes for dental aligners are labor-intensive and prone to human error, requiring manual manipulation and often necessitating multiple dental impressions or scans due to inaccuracies, which complicates the production and delivery of custom aligners.
Innovation Solution
A system comprising a plurality of thermoforming assemblies, a heating system, a forming system, and a conveyor system that automates the thermoforming process by using heaters, temperature sensors, and a pressure system to control the heating and forming of dental aligners, minimizing operator intervention and ensuring consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If traditional manual thermoforming processes are used, then flexibility in handling materials and molds is maintained, but labor intensity increases and human error occurs
Solution Approach 1:
The thermoforming system is divided into distinct functional modules: a heating system with multiple heaters and temperature sensors, a forming system with actuators and pressure systems, and a conveyor system. Each module operates independently but coordinates through a controller, allowing automated processing while maintaining manageable system complexity through modular design.
Solution Approach 2:
The system uses temperature sensors to automatically monitor thermoforming material temperature and feedback to the controller, which then adjusts heater operation and conveyor timing without manual intervention. The process self-regulates based on measured parameters, reducing labor while maintaining precision.
2Productivity
If manual manipulation of materials and molds is performed, then process flexibility is maintained, but productivity decreases and time consumption increases
Solution Approach 1:
The conveyor system continuously moves thermoforming assemblies through the heating and forming stations without interruption. Multiple assemblies can be processed in sequence or parallel, eliminating idle time between operations and maintaining continuous production flow, thereby increasing productivity and reducing total manufacturing time.
Solution Approach 2:
Dental molds are prepared in advance from impressions or digital scans, and thermoforming materials are pre-positioned on assemblies before entering the heating zone. This preliminary preparation eliminates setup time during the actual thermoforming process, allowing rapid continuous production.
3Manufacturing precision
If temperature control is not monitored, then system complexity is reduced, but manufacturing precision deteriorates
Solution Approach 1:
Temperature sensors are positioned to monitor the thermoforming material at critical locations during heating. The sensors provide real-time temperature data to the controller, which compares readings against target values and automatically adjusts heater power to maintain precise temperature control, ensuring consistent forming quality.
Solution Approach 2:
Manual temperature assessment and adjustment by operators is replaced with automated electronic temperature sensing and control. The electronic feedback system provides more precise and consistent temperature management than manual methods, improving manufacturing precision while the automation handles the complexity of continuous monitoring.
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 automated system increases the efficiency and consistency of dental aligner production, reduces human error, and allows for rapid output, improving the overall manufacturing process while maintaining precision and accuracy.
Implementation Method 1
The first heater is configured to heat the thermoforming material when the thermoforming material is proximate the first heater. The second heater is configured to heat the thermoforming material when the thermoforming material is proximate the second heater.
Implementation Method 2
The pressure system is configured to pressurize the chamber to compress the heated thermoforming material to the dental mold.
Data Source
AI summary
A system includes a plurality of assemblies each configured to support a dental mold and a material, a heating system configured to heat the material, a forming system configured to form a chamber encompassing the dental mold and at least a portion of the heated material, and to cause the heated material to form over the dental mold, and a conveyor system configured to move the plurality of assemblies from a loading area to the heating system, from the heating system to the forming system, and from the forming system to an unloading area.