Multi-material Photocuring 3D Printer Resin Removal
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Solution Overview
Problem
Conventional multi-material photocuring 3D printing methods face challenges in achieving high precision and resolution due to residual liquid pollution and damage from cleaning processes, which involve organic solvents and repeated cleaning, leading to decreased dimensional accuracy and repeated pollution.
Innovation Solution
A multi-material photocuring 3D printer with a rotary motor and printing plate that uses high-speed centrifugation to remove residual resin without organic solvents, combined with a locking device for precise positioning and a post-curing system to enhance cross-linking, ensuring accurate and pollution-free switching between materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cleaning slots with organic solvents are added to remove residual resin, then pollution from residual liquid is reduced, but the printed structure is damaged and dimensional accuracy decreases
Solution Approach 1:
The patent extracts and removes the harmful organic solvents from the cleaning process entirely. Instead of using chemical cleaning methods, the invention employs a mechanical scraping system with a scraper that physically removes residual resin from the printing plate surface, eliminating the need for alcohol or other organic solvents that damage printed structures and compromise dimensional accuracy.
Solution Approach 2:
The patent replaces the chemical cleaning mechanism (organic solvents) with a mechanical cleaning system. A scraper device is introduced that uses mechanical force to scrape and remove residual resin from the printing plate, substituting the harmful chemical process with a controlled mechanical action that preserves the integrity and dimensional accuracy of the printed structure.
2Object-affected harmful factors
If repeated cleaning processes are applied to remove residual resin, then pollution is reduced, but the printed structure is damaged and resolution decreases
Solution Approach 1:
The patent extracts and eliminates the need for repeated cleaning operations by introducing a scraper that performs effective residual resin removal in a single action. The scraper is designed to contact the printing plate surface and mechanically remove adhered resin, preventing pollution without requiring multiple cleaning cycles that would damage the printed structure and reduce resolution.
Solution Approach 2:
The patent substitutes the repeated chemical cleaning process with a single mechanical scraping operation. The scraper device provides controlled mechanical removal of residual resin, achieving thorough cleaning in one step rather than requiring repeated exposure to organic solvents, thereby preserving the printed structure's resolution and integrity.
3Object-affected harmful factors
If cleaning slots with organic solvents are added to clean the printing plate, then residual resin is removed, but organic solvent remains on the surface causing repeated pollution
Solution Approach 1:
The patent extracts and completely removes organic solvents from the cleaning process. Instead of using alcohol or other chemical solvents that leave harmful residues on the printing plate surface, the invention employs a mechanical scraper that physically removes residual resin without introducing any chemical substances, thereby eliminating the source of repeated pollution from solvent residues.
Solution Approach 2:
The patent replaces the chemical solvent-based cleaning system with a mechanical scraping system. The scraper device uses mechanical force to remove residual resin directly, substituting the chemical process that generates harmful solvent residues with a clean mechanical action that leaves no harmful substances on the printing plate surface.
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 solution enables high-precision and high-resolution multi-material printing by effectively removing residual resin through centrifugation, preventing contamination and structural damage, while maintaining accuracy and reducing material consumption and pollution.
Implementation Method 1
controlling the rotary motor to spin, so as to remove any residual resin liquid on the printed piece and the printing plane by a method of spinning and centrifugation
Implementation Method 2
Digital Light Procession (DLP), Liquid Crystal Display (LCD), Stereo Lithography Apparatus (SLA)
Data Source
AI summary
The present disclosure provides a multi-material photocuring 3D printer and a 3D printing method, wherein multi-material photocuring 3D printer comprises: a frame; a printing platform, arranged on frame; a lifting device, arranged on printing platform; a rotary motor, arranged on lifting device; a printing plate, arranged on rotary motor; wherein a bottom surface of printing plate is a printing plane; a plurality of resin slots, arranged on frame and located below printing plate; an optical engine, arranged on frame and located below printing plate. The present disclosure connects printing plate with rotary motor, after finishing printing with one material, it is possible to remove residual liquid resin on printed piece and printing plane by a method of high-speed centrifugation, to avoid any contaminations to printed piece, thereby ensuring printed piece in multi-material having a high precision and a high resolution.