3D Printing Build Unit Control for Standalone Operation

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Solution Overview

Problem

Existing 3D printing build units lack the ability to operate independently of a host apparatus, limiting their functionality and flexibility, as they can only be controlled through connections with a host apparatus for additive manufacturing, post-processing, or pre-processing operations.

Innovation Solution

The build unit is designed to operate in both 'slave' and 'standalone' modes, allowing it to receive control instructions from a connected host apparatus or generate independent control instructions via a user interface, enabling operation without a connected host apparatus, with features like a controllable drive unit and heater for moving and heating build materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the build unit is designed to operate only in slave mode with host apparatus connection, then the control and coordination are simplified, but the flexibility and usability are reduced

Engineering Contradiction:
Improveoperational flexibilityVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The control system dynamically switches between slave mode and standalone mode based on operational needs. The microcontroller can operate as a slave to host apparatus control instructions or generate independent control instructions when no host is connected, allowing the system to adapt its control architecture to the current operational context.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The build unit is designed with multi-functionality to operate in both slave mode (when connected to host apparatus) and standalone mode (when no host is connected). The same hardware platform supports both operational modes, eliminating the need for separate control systems and maximizing resource utilization.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If the build unit requires constant connection to host apparatus, then the control precision is maintained, but the mobility and accessibility are limited

Engineering Contradiction:
Improveuser accessibilityVSAvoidoperational reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The build unit incorporates self-service capability through the standalone mode, where the microcontroller can generate and execute control instructions independently without requiring a host apparatus. This allows the system to serve itself and maintain operational reliability even when disconnected from external control systems.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system performs preliminary actions by establishing operational protocols and control routines that can function both with and without host apparatus connection. The microcontroller is pre-configured to handle both slave and standalone operations, ensuring smooth transitions and maintaining reliability across different operational contexts.

Inventive Principle:
Principle #10Preliminary action

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 design enhances the build unit's flexibility and functionality, allowing it to be used in various locations without a host apparatus, improving user access to build material storage and efficient resource use by enabling standalone operation and direct user control.

Implementation Method 1

a heater arranged to heat the build material to a controlled temperature

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

a drive unit to move the build platform

Methodology Applied
Scientific EffectMechanical actuation: Mechanical Force

Data Source

PatentEP3519160B1Build unit control
Publication Date: 2022.12.07 HEWLETT PACKARD DEVELOPMENT COMPANY LP
  • EP3519160B1 patent drawingFigure 1
  • EP3519160B1 patent drawingFigure 2A~2B
  • EP3519160B1 patent drawingFigure 3A~3B

AI summary

Certain examples described herein relate to build units that are physically connectable to at least one host apparatus of an additive manufacturing system. A build unit comprises at least one controllable device useable in an object building operation. In certain examples, the at least one device is controllable according to first control instructions originating from the at least one host apparatus when the build unit is physically connected to the at least one host apparatus. In certain examples, the at least one device is also controllable according to second control instructions generated independently of the at least one host apparatus when the build unit is not physically connected to the at least one host apparatus.