Multi-Plane 3D Printing Head Assembly for Construction Speed
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Solution Overview
Problem
Current 3D printing technologies in the construction industry are limited by low speed, particularly when printing modular building blocks, which hinders efficient production of large-format objects with repeating internal structures.
Innovation Solution
A printing head assembly that allows simultaneous printing in multiple, offset planes with adjustable spacing and cooling mechanisms, enabling faster deposition of layers and adaptable to different motifs and materials, utilizing multiple extruders and a tilting arm system for efficient layer formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple printing units are arranged in rows to print simultaneously in different planes, then print speed is significantly increased, but device complexity increases due to multiple extruders and coordinating mechanisms
Solution Approach 1:
The printing system is divided into multiple independent printing units, each capable of printing in a different plane simultaneously. Each printing unit includes its own extruder, nozzle, and control system, allowing parallel operation across multiple layers. This segmentation enables the system to print multiple layers at once, significantly increasing print speed while maintaining manageable complexity through modular design.
Solution Approach 2:
The invention transitions from single-plane printing to multi-plane printing by arranging printing units at different vertical positions (different Z-heights). Each printing unit operates in its own plane, depositing material on different layers simultaneously. This dimensional expansion from 2D to 3D parallel printing is the core mechanism that achieves speed improvement.
2Manufacturing precision
If printing units are spaced apart to allow layer solidification time, then proper layer formation is ensured, but print speed is reduced due to time gaps between deposits
Solution Approach 1:
While one printing unit is depositing material on its designated layer, other printing units simultaneously deposit material on different layers. The spacing between printing units allows each deposited layer to solidify without interference from adjacent deposits, maintaining layer quality. The continuous operation of multiple units eliminates idle time, as each unit works continuously on its own layer while others work on different layers.
3Adaptability or versatility
If multiple filaments and materials are used with multiple extruders, then material versatility is improved, but filament exchange time and operational complexity increase
Solution Approach 1:
Each printing unit is equipped with its own extruder and filament feeding system, allowing different materials and filaments to be loaded into different units according to the specific requirements of each layer or region. This local differentiation enables material versatility without requiring complex centralized filament management systems.
Solution Approach 2:
Multiple printing units can be pre-loaded with different filaments and materials before printing begins. This preliminary preparation allows for rapid material changes during printing, as the system can switch between pre-loaded filaments without requiring time-consuming exchange operations. Each unit maintains its assigned material throughout the printing process.
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 solution significantly increases print speed, allowing for the rapid production of large-format objects with repeating structures, achieving print speeds several times faster than conventional single-level printing heads.
Implementation Method 1
The printing units are provided with cooling mechanisms
Implementation Method 2
The printing head comprises one or more extruders into which printed material, for example in the form of filament, is introduced, which is melted in the extruder
Data Source
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AI summary
The object of the invention is a 3D printer printing head assembly comprising a printing head carrier (1) and a printing head (10), which comprises at least two printing units (2) implemented such that they are mutually offset in the print plane. Each printing unit (2) comprises an extruder (3), filament feeder (4), cooling mechanism (5), and nozzle (6). The printing units (2) at a mutual spacing are adapted for simultaneous printing in different, mutually offset print planes. This assembly therefore allows for printing in multiple planes simultaneously. Furthermore, the object of the invention is a 3D printer with this assembly.