Deformable Thermal Barrier for 3D Printer Tool Port

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing extrusion-based 3D printing systems face challenges in retaining heat within the build chamber and minimizing thermal losses, especially when swapping tools during a print job.

Innovation Solution

The 3D printer incorporates an enclosed build chamber with a deformable thermal insulator and a thermal barrier over the tool port, which allows for tool swapping while minimizing heat loss by conforming to the print head and returning to a sealed state.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a tool port is provided for accessing the heated build chamber, then tool swapping capability is improved, but heat loss increases

Engineering Contradiction:

Improvetool swapping capabilityVSAvoidheat loss

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The patent employs a flexible thermal barrier made of deformable material that can be deformed to accommodate tool insertion and removal. This flexible barrier maintains thermal insulation by conforming to the tool port geometry during operation, allowing tool swapping while minimizing heat loss through the port opening.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The thermal barrier is designed as a dynamic component that changes its shape and position based on operational requirements. During tool swapping, the barrier deforms to allow access, then returns to its original sealed state to maintain thermal insulation. This dynamic behavior enables the system to transition between tool access mode and heat retention mode.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the tool port is left open for tool access, then ease of operation is improved, but thermal efficiency deteriorates

Engineering Contradiction:

Improvetool access easeVSAvoidthermal efficiency

Core Design Contradiction:

Ease of operationVSUse of energy by stationary object

Solution Approach 1:

The flexible thermal barrier acts as an intermediary element between the tool port opening and the heated build chamber. It provides a sealed interface that allows controlled access during tool swapping while maintaining thermal isolation during normal operation, thus mediating between ease of tool access and thermal efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The deformable thermal barrier serves as a flexible seal that can be temporarily opened for tool access then returns to a closed state. This flexible film maintains the thermal seal around the tool port, ensuring that the build chamber retains heat while still allowing easy tool swapping when needed.

Inventive Principle:

Principle #30Flexible shells and thin films

3Loss of energy

If a rigid thermal barrier is used, then heat retention is improved, but adaptability to tool movement deteriorates

Engineering Contradiction:

Improveheat retentionVSAvoidadaptability to tool movement

Core Design Contradiction:

Loss of energyVSAdaptability or versatility

Solution Approach 1:

The patent replaces rigid thermal barriers with a flexible deformable barrier that can adapt its shape to accommodate tool insertion and removal. This flexible barrier maintains thermal insulation effectiveness while providing the adaptability needed for tool movement, resolving the contradiction between heat retention and movement adaptability.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The thermal barrier is designed as a dynamic, deformable component rather than a rigid structure. It can change its configuration in response to tool movement, deforming to allow access and then returning to its original state to maintain heat retention. This dynamic adaptability enables both good heat retention and tool movement flexibility.

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 configuration effectively retains heat within the build chamber, reduces thermal losses during tool swaps, and maintains the unheated tool chamber at a safe temperature, thereby enhancing the thermal efficiency and operational reliability of the 3D printing system.

Implementation Method 1

an x-axis deformable thermal insulator spanning a length of the x-bridge and coupled to opposite ends of the tray and or the carriage

Methodology Applied

Scientific EffectThermal expansion: Thermal Expansion

Implementation Method 2

a thermal barrier mounted in the tool tray, covers the tool port and penetrable through an aperture thereof

Methodology Applied

Scientific EffectThermal insulation: Thermal Insulation

Data Source

PatentUS20250083385A1Thermal barrier for tool port into heated build chamber of 3D printer

Publication Date: 2025.03.13 STRATASYS INC

AI summary

A 3D printer includes an enclosed build chamber thermally separated from a tool chamber. An upward-facing tool tray coupled to or integral with a carriage has an open bottom providing a tool port for accessing the heated build chamber. A thermal barrier is mounted in the tool tray, covering the tool port but penetrable through an aperture thereof. The aperture provides an entry point to the build chamber for a working end of an active print head, wherein when the working end is positioned though the aperture, the tool port is substantially closed.