Powder Feeding Manifold Layout for Multi-Machine AM Supply

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Solution Overview

Problem

Existing powder conveying systems in additive manufacturing face challenges in maintaining a steady flow rate of raw material powder distribution to multiple machines while minimizing the risk of clogging and valve wear due to the abrasive nature of the powder.

Innovation Solution

A system utilizing a feeding manifold with shut-off valves and a gas flow drive to distribute raw material powder through conveying lines without branching or valves downstream of the manifold, employing gravitational flow and Venturi suction effects to ensure consistent distribution, and incorporating a gas flow circulation loop to reduce abrasive wear on valves.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a common infrastructure for powder supply is provided to multiple additive manufacturing machines, then resource efficiency is improved, but the risk of clogging and valve wear increases due to the abrasive nature of powder and the need for multiple shut-off valves

Engineering Contradiction:

Improveresource efficiencyVSAvoidrisk of clogging and valve wear

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent extracts the shut-off valves from the downstream conveying lines and concentrates them only at the feeding manifold. This eliminates multiple valves in the conveying lines, reducing wear and clogging risks while maintaining the ability to selectively supply powder to different machines through the manifold's valve arrangement

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The feeding manifold acts as an intermediary component that receives powder from the common reservoir and distributes it to multiple conveying lines. By placing shut-off valves at the manifold rather than in each conveying line, it mediates between the common infrastructure and individual machine supplies, reducing valve wear while maintaining selectivity

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If shut-off valves are placed in conveying lines to selectively distribute powder, then distribution control is improved, but valve wear and clogging risk increase due to abrasive powder flow

Engineering Contradiction:

Improvedistribution controlVSAvoidvalve wear and clogging

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent removes shut-off valves from the conveying lines entirely and relocates them to the feeding manifold. This extraction eliminates the harmful interaction between abrasive powder and valves in the conveying lines, while distribution control is maintained through the manifold's valve system that directs powder flow before it enters the conveying lines

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If multiple additive manufacturing machines operate in parallel, then production volume is improved, but the complexity of powder distribution infrastructure increases

Engineering Contradiction:

Improveproduction volumeVSAvoidpowder distribution infrastructure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent merges the powder supply infrastructure by using a single common reservoir and a shared feeding manifold with shut-off valves that serves multiple conveying lines. This consolidated approach supports parallel operation of multiple machines while avoiding the complexity of separate supply systems for each machine

Inventive Principle:

Principle #5Merging (Combining)

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

The system achieves a steady and even distribution of raw material powder to multiple additive manufacturing machines, reducing the risk of clogging and valve wear, thereby enhancing the efficiency and reliability of the additive manufacturing process.

Implementation Method 1

at least two conveying lines for conveying raw material powder to the at least two additive manufacturing machines by a gas flow driven by the at least one gas flow drive

Methodology Applied

Scientific EffectPneumatic transport:

Implementation Method 2

employing gravitational flow and Venturi suction effects to ensure consistent distribution

Methodology Applied

Scientific EffectGravitational flow: Gravitation

Implementation Method 3

employing gravitational flow and Venturi suction effects to ensure consistent distribution

Methodology Applied

Scientific EffectVenturi suction: Venturi Effect

Data Source

PatentUS12569915B2System and method for distributing raw material powder to a plurality of additive manufacturing machines

Publication Date: 2026.03.10 NIKON SLM SOLUTIONS AG

AI summary

A system distributes raw material powder from a reservoir to a plurality of at least two additive manufacturing machines. The system includes at least one gas flow drive and at least two conveying lines for conveying the powder to the at least two manufacturing machines by a gas flow driven by the at least one gas flow drive. The system further includes a feeding manifold for feeding the at least two conveying lines with the raw material powder. The feeding manifold is configured and arranged to selectively guide, controlled by at shut-off valves, the raw material powder into one of the at least two conveying lines. Each of the shut-off valves is arranged at the feeding manifold and is configured to selectively close and open for selectively feeding the at least two conveying lines with the raw material powder.