Multi-Station 3D Printing System with Robotic Handling

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Solution Overview

Problem

Existing extrusion-based additive manufacturing methods for producing three-dimensional structures are slow and inefficient, making them unsuitable for mass production and requiring improvements to enhance output and efficiency.

Innovation Solution

A system comprising multiple printing stations and a robotic unit that allows for the simultaneous operation of multiple nozzles and carriers, with a double-layered control configuration to optimize the deposition of build material paste, thereby improving the efficiency and versatility of the additive manufacturing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple printing stations are operated in parallel, then productivity increases, but system complexity increases

Engineering Contradiction:

Improveoutput of printed structuresVSAvoidsystem configuration

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system is divided into multiple independent printing stations, each capable of operating autonomously with its own deposition unit, carrier, and control system. This segmentation allows parallel operation to increase productivity while maintaining manageable complexity through modular design.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The robotic unit serves multiple functions: it provides carriers to printing stations, removes printed structures, and performs maintenance tasks. This multi-functionality reduces the need for separate specialized equipment, balancing productivity gains with controlled system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If printing speed is increased, then productivity improves, but manufacturing precision deteriorates

Engineering Contradiction:

Improveprinting speedVSAvoidfilament deposition accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The system dynamically adjusts deposition parameters based on real-time conditions. Each printing station can independently modify extrusion rate, nozzle movement speed, and filament flow to maintain precision even when overall system productivity is increased through parallel operation.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The control system monitors deposition quality and provides feedback to adjust printing parameters. This closed-loop control ensures that manufacturing precision is maintained despite increased printing speeds and parallel operation across multiple stations.

Inventive Principle:

Principle #23Feedback

3Productivity

If continuous operation is implemented, then productivity increases, but reliability decreases due to lack of maintenance

Engineering Contradiction:

Improvecontinuous operation capabilityVSAvoidsystem stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The robotic unit performs maintenance tasks such as carrier replacement and nozzle cleaning before failures occur. By proactively managing maintenance schedules and performing preventive actions, the system maintains reliability while enabling continuous operation across multiple printing stations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Each printing station is designed to be self-sufficient with easily replaceable carriers and modular components. The system can continue operating other stations while one station undergoes maintenance, and the robotic unit automatically handles carrier provisioning and basic maintenance tasks without human intervention.

Inventive Principle:

Principle #25Self-service

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 significantly enhances the productivity and quality of three-dimensional structure production by allowing for parallel printing, improved control over filament deposition, and continuous operation of printing stations, even during adjustments or material changes.

Implementation Method 1

A material (e.g. a viscous paste, a meltable polymer, a hydrogel, etc.) is extruded through a nozzle in the form of filaments

Methodology Applied

Scientific EffectExtrusion: Extrusion

Data Source

PatentUS12202201B2System and method for manufacturing three-dimensional structures

Publication Date: 2025.01.21 VLAAMSE INSTELLING VOOR TECHNOLOGISCH ONDERZOEK NV (VITO)

AI summary

A system and method for manufacturing three-dimensional structures is provided. The system includes plurality of printing stations and a robotic unit configured to interact with the plurality of printing stations, each of the plurality of printing stations being arranged to be accessible by the robotic unit. Each printing station includes a station controller for controlling at least one deposition control parameter. The system further includes a system controller configured to operate the robotic unit, and wherein the system controller is communicatively coupled to the plurality of printing stations for controlling at least an execution of printing tasks being performed on the plurality of printing stations. The station controllers are at least partially controllable by means of the system controller, wherein the system controller is configured to adjust at least one deposition control parameter of each printing station independent of deposition control parameters of other printing stations of the plurality of printing stations.