Support Structures with Fluid Channels for Additive Manufacturing

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Solution Overview

Problem

Existing additive manufacturing and laminated object manufacturing techniques face challenges due to surface oxides on layers, which inhibit bonding and require expensive, geometry-unspecific methods with low throughput.

Innovation Solution

The method involves depositing sheets with void spaces that form channels, allowing for the introduction of fluids to enhance bonding. External pressure creates an external barrier with ports connected to the channel ends, enabling gas, liquid, or vacuum forces to be introduced for bonding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional vacuums or purged gas chambers are used to mitigate surface oxides, then bonding quality is improved, but manufacturing cost increases and throughput decreases

Engineering Contradiction:

Improvebonding qualityVSAvoidmanufacturing throughput

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent divides the bonding chamber into multiple zones with independent vacuum control, allowing different regions to be processed simultaneously at different vacuum levels. This enables parallel processing of multiple layers without requiring the entire chamber to be evacuated, thereby improving throughput while maintaining bonding quality.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies preliminary vacuum treatment to specific layers before bonding occurs, removing surface oxides in advance. This preliminary action ensures that when layers are bonded, the surfaces are already optimized for adhesion, improving bonding quality without requiring prolonged vacuum exposure of the entire assembly.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If traditional vacuums or purged gas chambers are used to mitigate surface oxides, then bonding quality is improved, but manufacturing cost increases

Engineering Contradiction:

Improvebonding qualityVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent implements local vacuum treatment targeted at specific bonding interfaces rather than applying vacuum to the entire chamber uniformly. This localized approach reduces the volume requiring vacuum maintenance, lowering energy consumption and operational costs while ensuring adequate vacuum conditions at critical bonding surfaces.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent dynamically adjusts vacuum parameters such as pressure levels and gas flow rates based on the specific bonding requirements of different layers. By optimizing these parameters for each bonding event rather than using fixed settings, the process achieves high bonding quality with reduced gas consumption and faster cycle times, lowering manufacturing costs.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If traditional vacuum methods are used, then surface oxides are removed, but the method is not tailored to part geometry resulting in low throughput

Engineering Contradiction:

Improveoxide removal effectivenessVSAvoidthroughput per chamber

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent employs dynamic vacuum control where vacuum pumps and gas injection systems are activated selectively based on the real-time position and geometry of layers being bonded. This dynamic adaptation allows the system to optimize vacuum application for complex geometries without requiring complete chamber evacuation, thereby increasing throughput while maintaining effective oxide removal.

Inventive Principle:

Principle #15Dynamics

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 improves bonding efficiency by removing surface oxides and enhancing layer adhesion, increasing manufacturing throughput and reducing costs by tailoring the method to the specific geometry of the part being manufactured.

Implementation Method 1

the first void space forms a channel suitable for carrying a fluid

Methodology Applied

Scientific EffectFluid flow through channels:

Implementation Method 2

applying external pressure to the first sheet and the second sheet to create an external barrier

Methodology Applied

Scientific EffectPressure differential: Pressure Gradient

Implementation Method 3

wherein the first port enables a gas, liquid, or vacuum force to be introduced into the channel

Methodology Applied

Scientific EffectVacuum: Vacuum

Implementation Method 4

surface oxides on these layers may inhibit bonding of the layers

Methodology Applied

Scientific EffectSurface oxide removal:

Implementation Method 5

the method further includes introducing a heating fluid or a cooling fluid into the channel

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS12280536B2Support structures with fluid channels

Publication Date: 2025.04.22 ALLOY ENTERPRISES INC

AI summary

Methods and systems for manufacturing a workpiece. The method described herein includes depositing at least a first sheet on a substrate, the first sheet comprising a first part region and a first support structure region separated at least in part by a first void space; and operably positioning a plate with respect to the first sheet so that the first void space forms a channel suitable for carrying a fluid.