3D Printer Textured Window with Passive Lubricant Replenishment
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Solution Overview
Problem
Conventional three-dimensional printing systems face productivity issues due to adhesion of photopolymer resin to the transparent substrate, which is exacerbated by depletion of lubricant on textured windows, leading to reduced printing speed and potential damage.
Innovation Solution
A three-dimensional printing system with a textured window featuring internal channels connected to an auxiliary reservoir for passive lubricant replenishment, ensuring continuous lubrication and preventing adhesion by maintaining a consistent lubricant layer across the printing area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a textured window with lubricant grooves is used to prevent adhesion, then printing speed is improved, but lubricant is depleted over time causing adhesion problems
Solution Approach 1:
The textured window incorporates a porous lubricant replenishment layer that allows lubricant to be supplied from a reservoir through capillary action and pressure differential. This porous structure enables continuous lubricant delivery to the printing surface, preventing depletion while maintaining the textured surface geometry needed for high-speed printing.
Solution Approach 2:
An intermediate lubricant replenishment layer is introduced between the textured window and the photopolymer resin. This intermediary layer serves as a reservoir and delivery mechanism, supplying lubricant continuously to the interface without interfering with the optical or mechanical properties of the textured window.
2Duration of action of moving object
If lubricant is replenished through internal channels, then continuous printing is enabled, but system complexity increases
Solution Approach 1:
The lubricant replenishment system operates passively using natural pressure differentials and capillary action. The textured window structure itself serves as the replenishment mechanism, eliminating the need for external pumps, sensors, or control systems. This self-service approach enables continuous printing while maintaining simple system design.
Solution Approach 2:
The lubricant replenishment function is merged with the textured window structure itself. The internal channels and porous replenishment layer are integrated into the window assembly, combining the optical, mechanical, and lubrication functions into a single component rather than adding separate systems.
3Productivity
If lubricant layer is maintained to prevent adhesion, then productivity is improved, but mechanical stability of printing surface may be compromised
Solution Approach 1:
The lubricant replenishment system provides localized lubrication exactly where needed at the interface between the textured window and photopolymer resin. The porous structure and internal channels deliver lubricant precisely to the printing surface, maintaining stability elsewhere in the system while ensuring continuous lubrication at the critical interface for high 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
This solution extends the continuous printing time and enhances productivity by maintaining a stable lubricant layer, preventing adhesion and ensuring mechanical stability of the printing surface.
Implementation Method 1
The textured surface includes grooves that are configured to hold lubricant
Implementation Method 2
The textured substrate includes a plurality of internal channels connected to the auxiliary reservoir
Implementation Method 3
lubricant is passively replenished through layers in the textured window
Implementation Method 4
providing at least one porous layer in the textured window between the printing surface and the internal channels
Implementation Method 5
Lubricant can also be replenished through the textured window by providing at least one porous layer in the textured window
Data Source
AI summary
A three-dimensional printing system is provided that includes a tank, a textured substrate connected to the tank, and an auxiliary reservoir. The tank contains a liquid photopolymer resin. The textured substrate is configured to allow light to pass through into the liquid photopolymer resin. The auxiliary reservoir contains lubricant, and the textured substrate includes a plurality of internal channels connected to the auxiliary reservoir.