3D Printer Post-Processing Machine with Oscillating Spray Header
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Solution Overview
Problem
3-D printed parts often require a finishing process to remove scaffolding or substrate material and need washing and drying, which is not efficiently addressed by existing technologies.
Innovation Solution
A machine with a housing and working chamber equipped with a support structure, oscillating spray header, pump for fluid conveyance at varying pressures, and heating elements for washing, rinsing, and drying, along with ultrasonic agitation and chemical injection capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual finishing processes are used to remove scaffolding/substrate, then flexibility and simplicity are maintained, but productivity and consistency are poor
Solution Approach 1:
The processing system is segmented into distinct functional modules: spray header assembly with multiple nozzles for substrate removal, ultrasonic agitation module for washing, and drying section. Each module operates independently but coordinates through the control system, enabling high productivity while maintaining manageable complexity through modular design
Solution Approach 2:
The spray header serves multiple functions: it delivers pressurized fluid for substrate removal, provides rinsing capability, and can be adjusted for different spray patterns. The same chamber accommodates ultrasonic agitation and drying functions sequentially, making the system versatile for various post-processing operations without requiring separate dedicated equipment for each function
2Manufacturing precision
If automated finishing processes are implemented, then productivity and consistency improve, but device complexity increases
Solution Approach 1:
The control system receives feedback from sensors monitoring spray pressure, ultrasonic activation status, and drying conditions. This feedback enables real-time adjustments to maintain consistent finishing quality across different parts and operators, while the centralized control architecture manages system complexity through automated coordination of all components
Solution Approach 2:
The spray header is designed with adjustable positioning and spray angle capabilities, allowing dynamic adaptation to different part geometries and substrate types. The system can transition between different operational modes (spray pressure levels, ultrasonic on/off, drying temperature adjustments) to optimize finishing quality for specific applications while maintaining automated operation
3Productivity
If high pressure fluid is used for substrate removal, then processing efficiency improves, but risk of part damage increases
Solution Approach 1:
The spray header system provides dynamic control of fluid pressure, allowing the operator or control system to adjust pressure levels based on part sensitivity and substrate adhesion strength. High pressure is applied only where and when needed for effective substrate removal, while lower pressures are used for delicate areas, thereby maintaining productivity while minimizing damage risk through adaptive pressure management
Solution Approach 2:
The spray header incorporates multiple nozzles positioned at different locations and angles, enabling localized application of high-pressure fluid only to areas requiring substrate removal. Sensitive areas of the part receive reduced pressure or no spray exposure, concentrating the high-energy fluid application precisely where needed to maximize substrate removal efficiency while protecting vulnerable part features
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
Effectively removes substrate material, washes, and dries 3-D printed parts using customizable fluid pressure and temperature cycles, enhancing the post-processing efficiency and quality of the parts.
Implementation Method 1
A pump is configured and arranged to convey a fluid at varying pressures through the spray header
Implementation Method 2
The machine may also include a heater having heating elements or a coil for heating the fluids conveyed into the working chamber through the spray header. The heater may heat the fluid to a temperature up to about 180 degrees Fahrenheit.
Implementation Method 3
A spray header is disposed along at least a portion of the perimeter of the working chamber. The fluid from the spray header contacts the part
Implementation Method 4
The fluid from the spray header contacts the part and then passes through the opening in the structure where it flows into a sump below the working chamber
Data Source
AI summary
A method for removing substrate material from a part produced by a 3-D printer. The machine includes a housing having a working chamber defined therein. A spray header is disposed along at least a portion of the perimeter of the working chamber. A pump is configured and arranged to convey a fluid at varying pressures through the spray header. The fluid contacts the part and then flows to the bottom of the working chamber to a fluid outlet.