3D Printer Display Layer Progress Monitoring

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Solution Overview

Problem

Conventional three-dimensional printing apparatuses face issues such as stopping mid-process if power is shut off or the cover is opened accidentally, and it is difficult for workers to determine if the object is being formed due to quiet operation, leading to inaccurate completion of the object.

Innovation Solution

A three-dimensional printing apparatus and method that includes a display and a layer image data generator to present exact visual progress of the object formation by generating cross-sectional image data, adding thickness information, and outputting layer image data to display the progress of each layer being formed, allowing workers to monitor the process accurately.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If the three-dimensional printing apparatus operates quietly, then energy consumption is reduced, but it becomes difficult for workers to determine whether the object is being formed

Engineering Contradiction:
Improveenergy consumptionVSAvoiddetecting object formation progress
Core Design Contradiction:
Loss of energyVSDifficulty of detecting and measuring

Solution Approach 1:

The patent introduces an acoustic signal as an intermediary to communicate the status of the three-dimensional object formation process. The control unit generates acoustic signals that convey information about layer formation progress, allowing workers to detect object formation without increasing energy consumption of the printing apparatus itself.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces visual monitoring methods with an acoustic signal system. Instead of relying on visual inspection or noisy mechanical indicators, the system uses controlled acoustic signals generated by the control unit to communicate formation progress, substituting a quiet electronic system for potentially noisier alternatives.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If the cover is opened to check progress, then workers can visually monitor formation, but the process is interrupted and accuracy is compromised

Engineering Contradiction:
Improvemonitoring capabilityVSAvoidformation accuracy
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The patent implements a feedback mechanism where the control unit continuously monitors formation progress and communicates status to workers through acoustic signals. This allows real-time monitoring without physical intervention, as the system provides continuous feedback about layer completion and overall progress.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The acoustic signal acts as an intermediary that transmits formation status information from the printing apparatus to the worker without requiring physical access to the printing chamber. This eliminates the need to open the cover for monitoring.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Loss of energy

If power is shut off to save energy, then energy consumption is reduced, but the formation process stops and accuracy is compromised

Engineering Contradiction:
Improveenergy consumptionVSAvoidformation accuracy
Core Design Contradiction:
Loss of energyVSManufacturing precision

Solution Approach 1:

The control unit provides continuous feedback about formation progress through acoustic signals, allowing the system to maintain operation while managing energy consumption. Workers can monitor progress without requiring the apparatus to be shut off, as the feedback mechanism communicates status information.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system monitors and communicates its own formation status through the control unit's acoustic signal generation, eliminating the need for external intervention or power shutdowns for monitoring purposes.

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

Enables workers to make an exact visual check on the progress of formation, preventing accidental interruptions and ensuring accurate completion of the three-dimensional object.

Implementation Method 1

photo-curable resin is discharged from a nozzle of a discharge head in accordance with three-dimensional data and curing the photo-curable resin

Methodology Applied
Scientific EffectPhotopolymerisation: Photopolymerisation

Data Source

PatentEP2939817B1Three-dimensional printing apparatus and three-dimensional printing method
Publication Date: 2019.08.14 ROLAND DG CORP
  • EP2939817B1 patent drawingFigure 1
  • EP2939817B1 patent drawingFigure 2
  • EP2939817B1 patent drawingFigure 3

AI summary

A three-dimensional printing apparatus receives or generates three-dimensional data representing a shape of a three-dimensional object to be formed, and generates cross-sectional image data from the three-dimensional data to form the three-dimensional object in accordance with the generated cross-sectional image data. The apparatus includes a display that presents images, a generator that adds thickness information to the cross-sectional image data of each layer of the object, thus generating layer image data three-dimensionally representing each layer of the object, an output interface that outputs the generated layer image data, and a display controller that causes the display to present a first image upon formation of a predetermined layer of the object in accordance with the cross-sectional image data of the predetermined layer. The first image is based on the layer image data of the predetermined layer output from the output.