Stereolithography Material Cartridge Valve Mechanism
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Solution Overview
Problem
Existing stereolithography material supply systems face challenges with material handling, leading to material loss, contamination, and low flexibility when changing printing materials, particularly due to the handling of light-sensitive materials and the lack of a secure, flexible system for material dispensing.
Innovation Solution
A closed, light-tight material supply device with a bottle-shaped cartridge and an outlet valve unit that opens and closes based on the cartridge's position, ensuring secure material dispensing and easy replacement, while maintaining a self-leveling liquid level in the trough using a cattle trough-like mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If movable trays with lids are used to hold printing material, then light protection is improved, but material loss and contamination increase due to handling
Solution Approach 1:
The system divides the material storage into separate cartridges, each dedicated to a specific printing material. This segmentation eliminates the need to handle and move entire trays, reducing material loss and contamination while maintaining light protection for each individual cartridge.
Solution Approach 2:
The patent introduces an intermediary mechanism (the valve unit with pivotable connection) that controls material flow without requiring direct handling of the printing material. The valve acts as a mediator between the cartridge and the extrusion system, enabling material transfer while keeping the cartridge sealed and protected.
2Ease of operation
If trays are moved into the active area for material supply, then material dispensing is enabled, but contamination of the environment occurs
Solution Approach 1:
The patent extracts the valve unit from the cartridge assembly, allowing it to be cleaned and sterilized separately. This extraction enables the valve to be removed for cleaning without discarding the entire cartridge, reducing contamination risks while maintaining ease of material dispensing operation.
Solution Approach 2:
The cartridge is designed as a disposable component that can be easily replaced when empty or contaminated. This approach eliminates the need to clean and sterilize the entire material supply system, reducing environmental contamination while maintaining operational simplicity.
3Stability of the object's composition
If a fixed material supply system is used, then structural stability is improved, but flexibility for changing printing materials decreases
Solution Approach 1:
The patent introduces dynamic elements (pivotable valve connection, removable cartridges) into the material supply system. These dynamic features allow the system to adapt between different printing materials while maintaining structural stability during operation, resolving the contradiction between stability and flexibility.
Solution Approach 2:
The valve unit is designed with universal functionality to work with different cartridge types and printing materials. The pivotable connection and standardized interface enable the same valve mechanism to serve multiple purposes across different material configurations, enhancing flexibility without compromising structural integrity.
4Productivity
If the valve remains open during material dispensing, then material flow is improved, but material loss increases
Solution Approach 1:
The valve operates with periodic opening and closing cycles, opening only when material dispensing is required and closing when not in use. This periodic action maintains high material flow rates during operation while preventing material loss during storage and transit, resolving the contradiction between productivity and material conservation.
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 system enhances the safety and flexibility of material handling, reduces material loss and contamination, and ensures consistent material supply, allowing for efficient and precise operation of stereolithography devices.
Implementation Method 1
the outlet valve unit (20) has a valve (100) which opens and closes depending on the pivot position of the material supply device (10) and the stereolithography device (1000)
Implementation Method 2
maintaining a self-leveling liquid level in the trough using a cattle trough-like mechanism
Data Source
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AI summary
Stereolithography device material supply device for printing material to be cured (16), characterized in that the material supply device (10) accommodates a material cartridge (12) which accommodates the printing material (16), that the material cartridge (12) has an outlet valve unit (20) through which the printing material (16) can be dispensed, and that the material cartridge (12) is at least partially accommodated in the material supply device (10) and is at least partially supported on or in it.