Photopolymerization System with Sequential Stations for 3D Printing
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Solution Overview
Problem
Current 3D printing technologies in construction face challenges such as high costs, labor shortages, quality control issues, and a lack of appropriate regulations, with existing photopolymerization systems not fully optimizing the formation of photopolymerized prepolymers for efficient 3D printing of construction materials.
Innovation Solution
A system comprising a closed-loop conveyor with multiple photopolymerization stations and a prepolymerization chamber, where untreated material is sequentially irradiated with light of predetermined wavelengths and intensities to achieve precise photopolymerization, allowing for the conversion of uncured liquid into photopolymerized prepolymer suitable for 3D printing, with automatic control of viscosity and radiation dose.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If photopolymerization is performed using conventional methods, then polymerization can occur, but the viscosity control and polymerization consistency are insufficient for high-quality 3D printing materials
Solution Approach 1:
The photopolymerization process is divided into multiple sequential stations, each performing a specific function (irradiation, viscosity control, etc.). This segmentation allows precise control at each stage while maintaining overall process consistency, directly addressing the need for manufacturing precision without requiring the entire system to be overly complex.
Solution Approach 2:
The system performs preliminary photopolymerization and viscosity adjustment before the material reaches the 3D printing stage. By pre-processing the material to achieve optimal viscosity and polymerization state, the system ensures consistent quality for subsequent printing operations, improving manufacturing precision in advance.
2Reliability
If multiple photopolymerization stations are used to improve polymerization control, then material quality improves, but system complexity and cost increase
Solution Approach 1:
Each photopolymerization station is designed to perform multiple functions: irradiation, viscosity control, and quality preparation for 3D printing. By making each station multi-functional, the system achieves high material quality and reliability without requiring an excessive number of separate devices, thus managing complexity while improving reliability.
3Manufacturing precision
If sequential photopolymerization stations are implemented, then viscosity control improves, but production time and system complexity increase
Solution Approach 1:
The photopolymerization process operates continuously as material passes through multiple stations in sequence, with each station contributing to viscosity control and polymerization. This continuous multi-stage process achieves precise viscosity control while maintaining steady production flow, balancing manufacturing precision with productivity.
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 system effectively produces photopolymerized prepolymers with controlled viscosity, enhancing the quality and efficiency of 3D printing materials for construction components, such as walls and building features, by ensuring consistent and high-quality polymerization.
Implementation Method 1
irradiating the material with a predetermined dose of light energy to precure the material to a desired viscosity
Data Source
AI summary
A photopolymerized prepolymer manufacturing system can create material suitable for 3D printing buildings or building components. The system can include a conveyor, a prepolymerization chamber, and one or more processors. The prepolymerization chamber can have multiple prepolymerization stations arranged in sequence and can convert untreated material into photopolymerized prepolymer material as the conveyor moves the prepolymer past the prepolymerization chamber. The processor(s) can control operations of the conveyor, the prepolymerization chamber, or both, to alter operations in response to a detected system event. Each polymerization station can include a light source, such as an LED array, that irradiates material. Each light source can be in a lid of the prepolymerization station. When operation of one polymerization station is halted, such as for maintenance, then the system can increase the light source intensity of the remaining polymerization stations, slow the conveyor speed, or both.