Transparent Heater Embedded in Vat for 3D Printing Resin
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Solution Overview
Problem
Existing photocuring three-dimensional molding systems face challenges in efficiently controlling the reaction temperature of photosensitive resins, leading to poor heating efficiency and uneven temperature distribution, which affects the quality and yield of the printed products.
Innovation Solution
A vat heating device is introduced, where a transparent conductive glass heater is embedded in the vat or platform, allowing direct and uniform heating of the photosensitive resin. This configuration ensures that the heater is on the optical path of the light source, enabling effective temperature control without disrupting the curing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the heating device is disposed at the peripheral component outside of the vat, then the optical path of the light source is not affected, but the heating efficiency is poor and the temperature distribution is uneven
Solution Approach 1:
The heating device is merged with the vat structure by embedding the heater directly into the bottom plate of the vat. This integration allows the heating element to be in direct thermal contact with the photosensitive resin, eliminating the thermal resistance of the vat wall and achieving both high heating efficiency and uniform temperature distribution while maintaining optical transparency.
Solution Approach 2:
A transparent conductive glass heater serves as an intermediary element that simultaneously allows optical transmission and thermal conduction. This mediator enables the light to pass through to cure the resin while also providing direct thermal energy to the resin, resolving the contradiction between optical path requirements and heating efficiency.
2Force
If the viscosity of the resin is too high, then the drag force of the colloidal flow is too large, but this causes the cured product on the platform to fall off
Solution Approach 1:
By directly heating the photosensitive resin through the embedded heater, the temperature of the resin is increased, which changes its viscosity parameter. The reduced viscosity at elevated temperature decreases the drag force during separation, preventing the cured product from falling off while maintaining adequate adhesion during curing.
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 direct heating method provides stable and uniform temperature control, enhancing the reaction efficiency and chemical stability of the photocured products, while also improving the overall printing yield and product quality.
Implementation Method 1
the heater is disposed on the bottom plate, adjacent to the photosensitive resin. The heater is used to heat the photosensitive resin
Implementation Method 2
The photocuring molding technology uses a photosensitive resin as the material, and irradiates the photosensitive resin with ultraviolet light to generate a polymerization reaction, thereby curing and constructing a resin layer
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
A vat heating device is provided, including a vat (120) and a heater (130a, 130b, 130c). The vat has a bottom plate (122). The vat (120) is used to accommodate a photosensitive resin (10). The heater (130a) is disposed on the bottom plate (122), adjacent to the photosensitive resin. The heater is used to heat the photosensitive resin. The heater (130a) is on an optical path of a light source (142) for curing the photosensitive resin (10). A photocuring three-dimensional molding system containing the above vat heating device is also provided.