Powder Replenisher Pivoting for Rapid 3D Printing Supply
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Solution Overview
Problem
Existing powder supply techniques, such as those described in patent literature 1, are unable to quickly supply a predetermined amount of powder, leading to inefficiencies in powder distribution and material waste.
Innovation Solution
A powder supply apparatus comprising a hopper, a powder spreader, a powder replenisher, and a pivoting unit that allows for rapid and precise replenishment of the powder spreader with a predetermined amount of powder, enabling quick and uniform distribution on a shaping surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a screw member is used to supply powder, then the powder can be supplied continuously, but the supply speed is slow and cannot quickly supply a predetermined amount of powder
Solution Approach 1:
The powder supply system is segmented into multiple storage chambers (first storage chamber and second storage chamber) that can be independently filled and emptied. This allows parallel operation where one chamber supplies powder while another is being filled, significantly increasing the overall powder supply speed and reducing the time to supply predetermined amounts of powder.
Solution Approach 2:
The powder supply apparatus pre-fills multiple storage chambers before the actual shaping process begins. This preliminary action ensures that powder is already available in ready-to-use chambers, eliminating the need for slow continuous supply during critical operations and reducing the time required to supply predetermined amounts of powder.
2Productivity
If vibration is used to supply powder, then the powder can be moved quickly, but the apparatus becomes more complex and may cause material waste
Solution Approach 1:
The invention extracts and eliminates the vibration mechanism from the powder supply system. Instead of using complex vibrating components to move powder, the design relies on simple gravity-fed discharge from elevated storage chambers, dramatically reducing device complexity while maintaining efficient powder supply speed.
Solution Approach 2:
The storage chambers are positioned at elevated heights to create gravitational potential energy, allowing powder to flow downward naturally without requiring additional mechanical energy input from vibration mechanisms. This equipotential design simplifies the system while ensuring rapid powder delivery.
3Productivity
If a single storage chamber is used, then the apparatus is simpler, but the powder supply is not continuous and requires frequent refilling
Solution Approach 1:
Multiple storage chambers are nested within a single integrated support structure, creating a compact multi-chamber system. This nesting approach enables continuous powder supply through multiple chambers while minimizing the increase in overall device complexity, as the chambers share common structural and control elements.
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
Enables rapid and precise supply of a predetermined amount of powder to a recoater, reducing material waste and improving the efficiency of powder distribution without the need for vibration, thus enhancing the speed and accuracy of three-dimensional shaping processes.
Implementation Method 1
a pivoting unit that causes the powder replenisher to pivot
Data Source
AI summary
This invention quickly supplies a predetermined amount of powder from a hopper to a recoater. A powder supply apparatus includes, as its feature, a hopper, a powder spreader, a powder replenisher, and a pivoting unit. The hopper of the powder supply apparatus stores a powder. The powder spreader spreads the powder on a shaping surface. The powder replenisher of the powder supply apparatus is provided between the hopper and the powder spreader, and replenishes the powder spreader with a predetermined amount of powder. The pivoting unit of the powder supply apparatus causes the powder replenisher to pivot.