3D Printing Resin Vibration Control for Bubble-Free Precision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional 3D printing systems face issues with resin viscosity increase leading to decreased printing speed and trapped bubbles, causing defects due to small gaps between the build plate and transparent window.
Innovation Solution
Incorporation of movable transducers that emit vibration waves to facilitate resin flow and reduce interfacial friction, combined with a robotic arm for precise movement and heat exchangers to manage resin viscosity and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the gap between the build plate and transparent window is kept small, then printing precision is improved, but resin flow is restricted and bubbles are trapped
Solution Approach 1:
The patent applies ultrasonic vibration to the build plate through a transducer that generates high-frequency mechanical vibrations. This vibration energy propagates through the resin layer, reducing interfacial friction and enhancing resin flow between the build plate and transparent window, thereby eliminating bubbles while maintaining small gap dimensions for printing precision.
Solution Approach 2:
The patent changes the physical state parameters of the resin by applying ultrasonic vibration, which temporarily alters the resin's viscosity and flow characteristics. This parameter change enables improved resin flow and bubble removal during the printing process while maintaining the small gap configuration necessary for precision.
2Manufacturing precision
If the gap between the build plate and transparent window is kept small, then printing precision is improved, but resin viscosity increases leading to slower printing speed
Solution Approach 1:
The ultrasonic transducer applies continuous high-frequency vibration to the build plate, which counteracts the increasing resin viscosity that occurs during printing. This mechanical energy input maintains optimal resin flow characteristics throughout the printing process, enabling faster printing speeds while preserving the small gap configuration for precision.
Solution Approach 2:
The vibration is applied continuously throughout the printing process rather than intermittently. This continuous application of mechanical energy ensures that resin viscosity remains optimized at all times, maintaining consistent printing speed and preventing the accumulation of viscous effects that would slow down the process.
3Productivity
If ultrasonic vibration is applied to improve resin flow, then printing speed is enhanced, but device complexity increases
Solution Approach 1:
The ultrasonic transducer is integrated directly into the build plate structure, merging the vibration generation function with the substrate that already exists in the system. This integration approach minimizes additional components and simplifies the overall device architecture while still providing the necessary ultrasonic vibration for improved printing speed.
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
Enhances printing speed and reduces defects by improving resin flow and bubble removal, ensuring precise and efficient 3D printing.
Implementation Method 1
The transducer is configured to emit a vibration wave toward the optically transparent window
Implementation Method 2
One type of additive manufacturing process is vat polymerization, which includes stereolithography (SLA) and digital light processing (DLP) processes
Data Source
AI summary
A 3D printing system includes a tank, a rigid base, a transducer an electronic controller. The tank contains a liquid photopolymer resin. The tank includes an optically transparent window through which light is configured to pass. A printed substrate is produced on the rigid base from the liquid photopolymer resin as the rigid base moves with respect to the tank. The transducer is movably supported with respect to the tank. The transducer is configured to emit a vibration wave toward the optically transparent window. The electronic controller is programmed to control a position between the transducer and the printed substrate.