3D Print Head Assembly With Yaw Alignment and Contamination Control

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Solution Overview

Problem

Existing printing assemblies face issues with contamination of components due to excess build material, lack of independent control over print heads, and alignment, which are critical for large-scale commercial production.

Innovation Solution

A printing assembly with a housing containing multiple print heads, adjustable blocks, and a yaw bar for alignment, along with a manifold assembly for binder material distribution, imaging devices for surface irregularity detection, and heating systems for precise control, ensuring minimal contamination and improved maintainability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the build material in the build area is too high, then the printing assembly can deposit more layers, but the printhead devices drag excess build material away from the build area and contaminate the components within the printhead devices

Engineering Contradiction:

Improvebuild material volumeVSAvoidcontamination of printhead components

Core Design Contradiction:

Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The printing assembly is divided into separate modular components including the printhead device, build area, and material containment structures. This segmentation allows independent control and protection of the printhead from build material contamination while maintaining large build volume capacity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Build material containment structures and barriers are introduced as intermediary elements between the build area and printhead components. These intermediaries prevent excess build material from reaching and contaminating the printhead while allowing the printing process to continue with higher material volumes.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If the printhead devices are fixed in position, then the structure is simpler, but individual print heads cannot be independently positioned or aligned, resulting in undesirable positioning and inability to print the desired object

Engineering Contradiction:

Improveprinthead structure complexityVSAvoidindependent control of print heads

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The printhead assembly incorporates adjustable and movable components that allow dynamic repositioning of individual print heads. Adjustment blocks and positioning mechanisms enable each print head to be independently aligned and positioned while maintaining overall structural integrity, resolving the conflict between simplicity and operational flexibility.

Inventive Principle:

Principle #15Dynamics

3Volume of moving object

If the printing assembly is designed for compactness, then the footprint is smaller, but access to components for maintenance and serviceability is limited

Engineering Contradiction:

Improveprinting assembly footprintVSAvoidcomponent accessibility

Core Design Contradiction:

Volume of moving objectVSEase of repair

Solution Approach 1:

The printing assembly is designed with modular segmented components that can be independently accessed and serviced. The printhead, build area, and support structures are divided into separate accessible modules, allowing maintenance personnel to reach and service individual components without disassembling the entire compact structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The adjustable blocks and positioning mechanisms serve multiple functions: they enable precise alignment during operation, facilitate easy adjustment during maintenance, and allow reconfiguration for different printing applications. This multi-functionality maintains compact design while improving serviceability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12600087B2Print head assembly and methods for using the same

Publication Date: 2026.04.14 GENERAL ELECTRIC CO

AI summary

Additive manufacturing assemblies, printing assemblies, and methods for utilizing same are provided. A method includes providing a linear traversing stage (212) movable in a direction transverse to a rail (104) extending along a working axis of the additive manufacturing apparatus, and coupling a printing assembly (150) to the linear traversing stage (212) such that the printing assembly is movable along the linear traversing stage in a direction transverse to the working axis. In embodiments, the printing assembly includes a housing (201) including a printing head (154). At least one adjustment member (232) may be extended or retracted through a yaw bar (224) to rotate the housing. In embodiments, a printing head receptacle (502) may be provided for coupling the printing assembly to the rail. In embodiments, the yaw bar (224) may be provided between the housing and the printing head receptacle (502) for rotating the printing assembly relative to the printing head receptacle.