Multi-Dispenser 3D Printing Head for Faster Powder-Bed Fabrication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current 3D printing methods are time-consuming, especially for complex objects, significantly reducing the utility of 3D printers and hindering their large-scale adoption due to the slow process of layer-by-layer material deposition.
Innovation Solution
A 3D printing apparatus with multiple powder dispensers and an energy source that simultaneously deposits and melts multiple layers of powder using an energy beam, allowing for staggered layer formation and incremental building of objects, thereby increasing productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional selective laser melting or sintering methods are used with a single powder dispenser and energy beam, then the manufacturing precision and quality of 3D printed parts are maintained, but the printing speed and productivity are significantly reduced, taking several days or weeks to fabricate reasonable sized objects
Solution Approach 1:
The invention divides the printing system into multiple independent powder dispensers (first, second, third powder dispensers) positioned at different locations, each capable of depositing powder layers simultaneously. This segmentation allows parallel processing of different regions of the build platform, thereby increasing productivity while maintaining manufacturing precision through individual control of each dispenser
Solution Approach 2:
The invention merges multiple powder dispensers and multiple energy beams into a single integrated printing system that operates simultaneously. The first, second, and third powder dispensers work in parallel with corresponding energy beams to process different areas of the build platform at the same time, combining their capabilities to achieve high-speed printing without sacrificing quality
2Productivity
If multiple powder dispensers are used to deposit multiple layers simultaneously, then the printing productivity is significantly increased, but the device complexity increases with multiple powder dispensers and energy beams required
Solution Approach 1:
Each powder dispenser assembly is designed as a multi-functional unit that combines powder delivery, layer deposition, and coordination with energy beam processing. The standardized modular design of each dispenser assembly allows the system to scale in capability while managing complexity through reusable, interchangeable components that perform multiple functions within each unit
Solution Approach 2:
The invention transitions from single-layer sequential processing to multi-layer simultaneous processing by adding the dimension of vertical parallelism. Multiple powder dispensers operate at different heights or positions to deposit layers that are processed simultaneously by multiple energy beams, effectively utilizing three-dimensional space to increase productivity without proportionally increasing horizontal device footprint
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 approach results in a significant increase in printing productivity, enabling the rapid fabrication of complex objects, overcoming the time constraints of traditional methods and enhancing the practicality of 3D printing for consumers and industries.
Implementation Method 1
selective laser melting or sintering, which operate by having a powder bed onto which an energy beam is projected to melt the top layer of the powder bed so that it welds onto a substrate or a substratum
Implementation Method 2
a plurality of powder dispensers (22) connected at a plurality of positions along the frame (16), the powder dispensers (22) being configured to deposit multiple layers of powder (24) onto the operative surface (12) simultaneously
Data Source
Figure 1~2
Figure 3~4
AI summary
A printing apparatus for printing a three-dimensional object, comprising an operative surface; a printing head comprising a frame attached pivotally to at least one control arm, wherein the frame is rotatable about an axis disposed at a point of attachment between the frame and control arm; a plurality of powder dispensers connected at a plurality of positions along the frame, the powder dispensers being configured to deposit multiple layers of powder onto the operative surface simultaneously when the printing head travels relative to the operative surface; and an energy source for emitting at least one energy beam onto at least one layer of powder.