3D Printed Model Resin Removal via Linear Agitation

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Solution Overview

Problem

Existing methods for removing resin residues from three-dimensional printed models, such as compressed air and solvent baths, are either damaging to the model or inefficient in terms of time and solvent consumption.

Innovation Solution

A container system that moves linearly to agitate a solvent, allowing it to effectively remove resin residues from complex geometries without damaging the model, using a reduced amount of solvent compared to traditional methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a jet of compressed air is used to remove resin residues, then the removal speed is improved, but the surface of the three-dimensional object can be damaged

Engineering Contradiction:

Improveresin residues removal speedVSAvoidsurface damage to the model

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical action of compressed air jets with a chemical action using solvent. The solvent (isopropyl alcohol) chemically dissolves the resin residues through solvation, eliminating the need for high-velocity air streams that cause surface damage while maintaining effective residue removal capability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the physical parameters of the cleaning process by using liquid solvent at controlled temperature and volume instead of gaseous compressed air at high pressure. The solvent volume is optimized to be sufficient for complete removal but limited to minimize damage risk, transforming the cleaning mechanism from mechanical impact to chemical dissolution

Inventive Principle:

Principle #35Parameter changes

2Manufacturing precision

If a bath of the three-dimensional object in an adequate solvent is used, then complete removal of residues is improved, but the consumption of solvent increases significantly and the processing time increases

Engineering Contradiction:

Improvecompleteness of residues removalVSAvoidsolvent consumption

Core Design Contradiction:

Manufacturing precisionVSQuantity of substance

Solution Approach 1:

The patent applies partial action by using a limited volume of solvent (5-50 mL) instead of complete immersion. The solvent is applied directly to the model surface and allowed to flow over specific areas, achieving complete residue removal without the excessive solvent consumption required for full baptism, while maintaining sufficient contact time for thorough cleaning

Inventive Principle:

Principle #16Partial or excessive action

3Manufacturing precision

If a bath of the three-dimensional object in an adequate solvent is used, then complete removal of residues is improved, but the processing time increases due to pre-set bathing time

Engineering Contradiction:

Improvecompleteness of residues removalVSAvoidprocessing time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent implements periodic action through a systematic sequence: applying solvent, allowing brief contact time for dissolution, tilting the container to distribute solvent, and repeating the cycle. This periodic application and distribution of solvent achieves complete residue removal more quickly than continuous immersion, as each cycle targets specific areas and prevents solvent depletion

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent introduces dynamic movement by tilting the container at various angles (15-45 degrees) during the cleaning process. This dynamic repositioning allows the solvent to flow over different surfaces of the model, ensuring complete coverage and residue removal without requiring extended static immersion time, thereby reducing overall processing time

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

The method achieves thorough and efficient removal of resin residues in a short time, minimizing damage to the model and reducing solvent consumption, while ensuring the model's integrity is maintained.

Implementation Method 1

Into the container is introduced the solvent (24), which is adequate for removing the resin from the model (100).

Methodology Applied

Scientific EffectSolvation: Solvation

Data Source

PatentEP3585591B1Method and container for removing resin residues from a model created by three-dimensional 3D printing

Publication Date: 2025.04.02 RD PRINTING SRL

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AI summary

Method for removing resin residues from a model created by three-dimensional 3D printing, including the steps of creating a three- dimensional model through three-dimensional 3D printing, inserting the model into a container (10), introducing a solvent (24) into the container (10) and moving the container (10) with the solvent (24) and the model by means of repeated linear movements. The application further relates to a container (10) for removing resin residues from a model created through three-dimensional 3D printing, the container (10) including a tank (20) adapted to contain a solvent (24), a cover (30) adapted to close the tank (20) and means (38) for sealing the cover (30) to the tank (20), wherein the cover (30) includes or is a base (32) of three-dimensional 3D printer, the base (32) including one or more anchoring elements (34) for a three- dimensional model.