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

VSEngineering 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

Engineering Contradiction:
Improveprint speedVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

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.

Inventive Principle:
Principle #1Segmentation

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.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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

Engineering Contradiction:
Improvelayer formation qualityVSAvoidprint speed
Core Design Contradiction:
Manufacturing precisionVSProductivity

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.

Inventive Principle:
Principle #20Continuity of useful action

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

Engineering Contradiction:
Improvematerial versatilityVSAvoidfilament exchange operation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

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.

Inventive Principle:
Principle #3Local quality

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.

Inventive Principle:
Principle #10Preliminary action

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

Methodology Applied
Scientific EffectCooling: Cooling

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

Methodology Applied
Scientific EffectMelting: Melting

Data Source

PatentEP4304835B1Printing head assembly for a 3D printer and a 3D printer with this assembly
Publication Date: 2024.12.18 SITAR LIBOR
  • EP4304835B1 patent drawingFigure 1
  • EP4304835B1 patent drawingFigure 2
  • EP4304835B1 patent drawingFigure 3~4

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.