Revolved Blast Nozzle Depowdering for Additive Manufacturing
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Solution Overview
Problem
Conventional depowdering apparatuses in additive manufacturing require extensive manual labor and are time-intensive, limiting manufacturing throughput due to difficulties in accessing all portions of the cake and necessitating additional manual operations.
Innovation Solution
A depowdering apparatus with a blast nozzle that revolves around a vertically oriented inlet axis, synchronized with a build elevator, to efficiently remove excess powder from the cake, reducing manual labor and increasing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional depowdering apparatuses are used, then the depowdering operation can be performed, but extensive manual labor and additional manual operations are required, reducing productivity
Solution Approach 1:
The blast nozzle is made movable and rotatable, allowing it to dynamically position itself at different locations around the cake. The nozzle can rotate about the inlet axis and position itself at different radial distances, enabling automated comprehensive coverage of the cake surface without manual intervention.
Solution Approach 2:
The system uses the build elevator's own motion to raise the cake while simultaneously using the rotatable blast nozzle to self-position and perform depowdering. The coordinated operation of the elevator and nozzle creates an automated self-sufficient depowdering process.
2Productivity
If conventional depowdering apparatuses are used, then the depowdering operation can be performed, but the process is time-intensive, limiting manufacturing throughput
Solution Approach 1:
The rotatable blast nozzle enables continuous depowdering action by seamlessly moving from one location to another around the cake. The nozzle can rotate and reposition without interruption, maintaining continuous material removal across the entire cake surface, thereby reducing total depowdering time.
Solution Approach 2:
The depowdering process transitions from a single-location operation to a three-dimensional operation where the nozzle moves in multiple directions (radial distance and angular position). This multi-dimensional approach allows simultaneous treatment of multiple cake surfaces, significantly reducing the time required for complete depowdering.
3Ease of operation
If conventional depowdering apparatuses are used, then the depowdering operation can be performed, but accessing all portions of the cake is difficult, requiring additional manual operations
Solution Approach 1:
The blast nozzle is equipped with rotational and positioning capabilities, allowing it to dynamically access different portions of the cake by rotating around the inlet axis and adjusting its radial position. This dynamic positioning system provides comprehensive access to all cake surfaces without requiring complex multi-component apparatus structures.
4Productivity
If automated depowdering is implemented, then productivity increases, but coordination between build elevator and blast nozzle is required, increasing device complexity
Solution Approach 1:
The control systems of the build elevator and blast nozzle are merged into a coordinated operation. The rotation of the nozzle and the elevation of the cake are synchronized through integrated control, allowing the two functions to work together seamlessly without requiring complex independent coordination mechanisms.
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 apparatus significantly reduces manual labor and increases manufacturing throughput by ensuring comprehensive removal of excess powder with automated operation, enhancing the efficiency of the depowdering process.
Implementation Method 1
a fluid stream removes powder material from the cake thereby exposing the build part
Implementation Method 2
a fluid stream removes powder material from the cake
Data Source
AI summary
A depowdering apparatus for depowdering a cake comprising a build part includes a depowdering chamber, a blast nozzle, and a build elevator. The depowdering chamber includes a bottom surface and a build inlet extending through the bottom surface, where the build inlet includes an inlet axis that is substantially vertically oriented. The blast nozzle is positioned within the depowdering chamber and oriented to direct a fluid stream toward the inlet axis. The blast nozzle is laterally spaced from the inlet axis and operable to revolve about the inlet axis on a travel path encircling the inlet axis. The build elevator is arranged below the build inlet in a vertical direction and is operable to raise the cake comprising the build part through the build inlet and into the depowdering chamber along the inlet axis as the blast nozzle is revolved about the inlet axis on the travel path.