Multi-Head 3D Printing Colored Models Segmentation
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Solution Overview
Problem
Current 3D printing techniques, particularly fused-deposition modeling, face challenges in converting 3D models with surface color data into printer instructions, limiting the number and orientation of colors that can be printed, and resulting in high computational complexity, low print speeds, and lower quality objects.
Innovation Solution
The techniques described enable the creation of printer instructions for multi-head 3D printers by determining printer instructions based on a 3D model and color data, allowing for a nearly unlimited number and orientation of colors, and tailoring these instructions to the characteristics of individual FDM printers, such as the number of printer heads, to produce high-quality objects with efficient print speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current fused-deposition printing techniques are used to convert surface representation and color data into printer instructions, then the process can handle basic 3D printing, but the conversion becomes difficult or impossible for colored models with multiple colors and orientations
Solution Approach 1:
The patent segments the 3D model into multiple single-colored components, each representing a distinct color region. This segmentation allows the complex multi-colored model to be processed as separate simpler models, which can then be printed using a single-color extruder, thereby resolving the conversion difficulty while maintaining color printing capability
Solution Approach 2:
The patent introduces an intermediary processing step that converts the surface representation and color map into a format suitable for FDM printing. This intermediary process involves mapping colors to geometric segments and generating appropriate printer instructions, acting as a bridge between the input model format and the printer's capabilities
2Adaptability or versatility
If separate models are created for each single-colored object and then combined, then colored models can be printed, but the computational complexity becomes high and print speeds become low
Solution Approach 1:
The patent segments the multi-colored model into single-colored components that can be printed in sequence by a single extruder. This segmentation enables efficient processing by avoiding the need to manage multiple complex multi-colored models simultaneously, thereby improving print speed while maintaining the capability to print multi-colored objects
Solution Approach 2:
The patent discards the complex color information during the segmentation process, retaining only the geometric data for each color region. This discarding of redundant color data reduces computational complexity, while the color information is recovered through the sequential printing process using different filaments for different segments
3Adaptability or versatility
If separate models are created for each single-colored object and then combined, then colored models can be printed, but the quality of the printed object becomes lower than desired
Solution Approach 1:
The patent applies local quality by ensuring that each segmented single-colored model maintains the precise geometric boundaries and surface characteristics of the original multi-colored model. This local preservation of quality in each segment ensures that when assembled, the overall printed object achieves the desired manufacturing precision and visual fidelity
4Device complexity
If a single-color extruder is used, then the printer structure is simpler, but the number and orientation of colors that can be printed is limited
Solution Approach 1:
The patent segments the color space into discrete single-color regions, allowing a single-color extruder to print each segment sequentially. This segmentation enables a simple single-extruder printer to achieve the versatility of multi-color printing by processing the model as separate single-colored components
Solution Approach 2:
The patent performs preliminary segmentation and color assignment before printing, preparing the model data in advance to suit the single-color extruder. This preliminary action separates the color complexity from the printing process, allowing the simple extruder to produce multi-colored objects through pre-planned sequential printing of segmented regions
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
These techniques reduce computational complexity, increase print speeds, and enhance the quality of printed objects by enabling the creation of 3D objects with complex color patterns, closely resembling the original model, while accommodating various printer characteristics.
Implementation Method 1
layers of material, such as sugar, plastic, or metal, are extruded, often in the form of small beads that make up strings, also called 'filaments'
Data Source
AI summary
This document describes techniques and apparatuses for 3D printing for colored models on multi-head fused-deposition modeling (FDM) printers. These techniques are capable of enabling FDM printers to create 3D objects based on colored models, in some cases by determining printer instructions for multiple printer heads based on a 3D model and color data for the surface of the 3D model. These techniques can also tailor printer instructions to characteristics of a particular type or individual FDM 3D printer.