Droplet Shaping Apparatus Temperature Gradient Movement
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Solution Overview
Problem
The burden on users in shaping three-dimensional objects using stereolithography or photoreduction is high due to the need to accurately place and clean multiple materials, with significant waste and inaccuracy in material exchange through microchannels, especially when precision is required for small objects.
Innovation Solution
A shaping apparatus that uses a movement processing unit to create a temperature gradient by heating the droplet periphery more than the center, allowing precise movement and shaping without spreading, and a shaping unit that performs stereolithography by partially solidifying the droplet in a predetermined area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If materials are exchanged using microchannels, then the substrate is not detached, but the amount of material in microtubes or switching valves is very large causing material mixing and significant waste
Solution Approach 1:
The patent extracts the material exchange process from the microchannel system and performs it directly on the substrate surface. Materials are delivered as droplets onto the substrate rather than being stored and transported through microtubes and valves, eliminating the source of material mixing and waste while maintaining substrate attachment stability.
Solution Approach 2:
The patent introduces a droplet-based intermediate carrier system. Instead of using microchannels as the primary transport medium, droplets serve as the intermediary vehicle for material delivery onto the substrate, allowing precise placement without the material confinement issues of microchannel systems.
2Adaptability or versatility
If multiple materials are used for shaping, then various object characteristics can be achieved, but the user burden increases due to frequent cleaning and replacement operations
Solution Approach 1:
The patent implements preliminary action by pre-positioning multiple material droplets on the substrate before the shaping process begins. This allows the user to switch between materials without performing cleaning operations during the shaping process, as all necessary materials are already in place and ready for use.
Solution Approach 2:
The system enables self-service material exchange where the droplet delivery mechanism automatically positions different materials on the substrate without requiring manual cleaning and replacement operations by the user, reducing operational burden while maintaining material versatility.
3Manufacturing precision
If precision processes are performed on small objects, then high accuracy is required, but the burden on users increases due to strict placement position and direction requirements
Solution Approach 1:
The patent replaces manual mechanical placement operations with an automated droplet delivery system. The system uses controlled droplet generation and positioning mechanisms to place materials with high precision without requiring the user to manually position materials, thereby reducing operational burden while maintaining manufacturing precision.
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 method reduces the user burden by simplifying the placement and cleaning of materials, improving accuracy, and minimizing material waste during the shaping process, especially for small and complex objects.
Implementation Method 1
a movement processing unit that heats a droplet such that a temperature of the droplet on a peripheral side in a horizontal direction becomes higher than that on a center side in the horizontal direction and move the droplet by moving a heating area
Implementation Method 2
In relation to stereolithography, Non Patent Literature 1 discloses a method of shaping a fine structure of silver by using a photoreduction. In the method described in Non Patent Literature 1, an aqueous liquid containing silver ions is irradiated with laser light to condense silver into a desired shape.
Data Source
AI summary
A shaping apparatus includes: a movement processing unit that heats a droplet such that a temperature of the droplet on a peripheral side in a horizontal direction becomes higher than that on a center side in the horizontal direction and move the droplet by moving a heating area; and a shaping unit that performs shaping by partially changing the droplet into a solid in a predetermined shaping area.