Molding Device Resin Replacement via Magnetic and Thermal Actuation
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Solution Overview
Problem
In micro-stereolithography, accurately positioning molded objects is challenging due to deviations during glass substrate reinstallation, and high viscosity resins hinder resin movement, leading to inefficient material usage and waste.
Innovation Solution
A molding device with a movement processing unit that moves a liquid column sandwiched between substrates using magnetic particles or temperature gradients, allowing for precise positioning and reuse of resins without substrate removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the glass substrate is temporarily removed and cleaned when resin is replaced, then the resin can be replaced, but the positioning accuracy of the molded object deteriorates due to deviations during reinstallation
Solution Approach 1:
A valve mechanism is introduced as an intermediary component to enable resin replacement without removing the glass substrate. The valve allows uncured resin to be discharged and new resin to be supplied through the same flow path, eliminating the need for substrate removal and subsequent repositioning operations that cause positioning deviations.
Solution Approach 2:
The resin replacement function is extracted from the substrate removal process. By separating the resin discharge function (handled by the valve) from the substrate handling, the system can replace resin while keeping the substrate and molded object in place, thus maintaining positioning accuracy.
2Adaptability or versatility
If a valve is provided for resin disposal to enable resin switching, then resin replacement becomes possible, but high viscosity resin makes resin movement difficult
Solution Approach 1:
The system changes the physical parameters of high-viscosity resin by applying heating to reduce its viscosity, making it flowable through the micro flow path and valve. This parameter change enables the valve mechanism to effectively control and move high-viscosity resin during replacement operations.
3Ease of manufacture
If uncured resin is discarded every time resin is replaced, then resin replacement is simplified, but material efficiency deteriorates due to inability to reuse uncured resin
Solution Approach 1:
Instead of discarding uncured resin, the system recovers it by reversing the flow through the valve. The uncured resin is discharged back through the micro flow path to a collection container, allowing it to be reused in subsequent molding operations, thus improving material efficiency while maintaining process simplicity.
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
Enables efficient material usage, precise object positioning, and reduces resin waste by allowing non-contact resin replacement and reuse, improving the micro-stereolithography process.
Implementation Method 1
moves a liquid column sandwiched between two substrates by moving a magnetic substance
Implementation Method 2
creates a temperature gradient in the liquid column with a point heater using electromagnetic waves
Data Source
AI summary
A molding device includes a movement processing unit configured to move a liquid column sandwiched between two substrates and a molding unit configured to perform a molding process by partially changing the liquid column to a solid within a prescribed molding region.