Modular Additive Manufacturing With Sealed Removable Cartridges
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Solution Overview
Problem
Traditional additive manufacturing systems are cumbersome, require significant downtime for maintenance and cleaning, expose operators to hazardous materials, and lack efficient temperature control for post-processing, leading to reduced throughput and material property issues.
Innovation Solution
A modular additive manufacturing system with removable print cartridges and laser engines, featuring a sealed chamber with integrated optics and alignment systems, allows for easy maintenance, containment of hazardous materials, and continuous printing across multiple stations with temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the print chamber is sealed to contain hazardous materials, then operator safety is improved, but achieving a perfect seal becomes difficult and powder leakage occurs
Solution Approach 1:
The patent extracts the hazardous printing process into a separate removable cartridge that can be sealed independently. The cartridge contains the powder and printing chamber, separating it from the main printer body. This allows the cartridge to be sealed as a complete unit, eliminating the complexity of sealing the entire printer while still protecting operators from hazardous materials.
Solution Approach 2:
The printer is divided into separate modular components: a removable cartridge containing the print chamber and powder, and a stationary printer body. This segmentation allows the cartridge to be handled as a discrete sealed unit, simplifying the sealing requirement from a large complex chamber to a smaller, more manageable cartridge component.
2Manufacturing precision
If manual cleaning and servicing is performed to maintain print quality, then print purity is improved, but significant downtime is required and operator exposure to hazards increases
Solution Approach 1:
The cartridge is designed to be completely removable from the printer. After printing, the entire cartridge containing the used powder and print chamber can be extracted and replaced with a fresh cartridge. This eliminates the need for manual cleaning of the print chamber and gas ductwork, reducing maintenance downtime while ensuring print purity through complete cartridge replacement rather than partial cleaning.
Solution Approach 2:
The system employs disposable cartridges that are discarded after use rather than cleaned and reused. Each cartridge is pre-filled with fresh powder and can be disposed of after completion, eliminating the time-consuming cleaning process while maintaining print quality. The cartridge replacement process is quick compared to traditional cleaning methods.
3Adaptability or versatility
If the print chamber is opened for material switching, then material flexibility is improved, but inert gas is lost and printing time is extended
Solution Approach 1:
Different materials are contained in separate pre-filled cartridges rather than stored in the main print chamber. When material switching is needed, the entire cartridge is removed and replaced with a new cartridge containing the desired material. This eliminates the need to open the print chamber for material loading, preventing inert gas loss and extending printing time.
Solution Approach 2:
Materials are pre-loaded into cartridges before printing begins. Each cartridge is prepared in advance with the specific material and atmosphere required, so no time is lost during printing for material loading or chamber purging. The preliminary preparation of cartridges enables rapid material switching without interrupting the printing process.
4Ease of manufacture
If prints are removed from the controlled environment for post-processing, then access for treatment is improved, but temperature control is lost and material properties are affected
Solution Approach 1:
The cartridge is extracted from the printer but maintains its sealed, temperature-controlled environment during post-processing operations. The entire cartridge can be moved to post-processing equipment while remaining sealed, allowing access for treatment without exposing the prints to atmospheric conditions or losing temperature control.
Solution Approach 2:
The cartridge employs a sealed chamber design that acts as a flexible barrier between the controlled printing environment and the external atmosphere. This seal allows the cartridge to be moved and manipulated during post-processing while maintaining internal temperature and atmospheric conditions, protecting the prints from environmental exposure.
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
Enhances safety by isolating hazardous materials, reduces downtime between prints, and enables high-throughput manufacturing with flexible material handling and thermal processing without exposing prints to atmospheric conditions.
Implementation Method 1
a laser engine including a frame can be positioned to hold at least one removable field replaceable unit that includes at least some laser optics or patterning optics
Implementation Method 2
uses one or more focused energy sources, such as a laser or electron beam, to draw a pattern in a thin layer of powder by melting the powder and bonding it to the layer below
Data Source
AI summary
A print engine of an additive manufacturing system includes a print station configured to hold a removable cartridge. A laser engine including a frame can be positioned to hold at least one removable field replaceable unit that includes at least some laser optics or patterning optics. An optical alignment system can be attached to at least one of the print station or the laser engine to align the field replaceable unit with respect to the removable cartridge.