Rotating Circular Plate Layer-by-Layer Machine
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Solution Overview
Problem
Current layer-by-layer powder sintering machines face inefficiencies due to low capacity from alternating linear sweeping, slow cooling of parts, and inadequate temperature control, which hinder the production of circular parts with large diameters and complex helical shapes.
Innovation Solution
A rotating circular plate with independently motorized cylindrical crowns and multiple stations for distributing, regulating, and treating layers, including temperature control and additive processes, allows for continuous rotation and independent sector treatment within a sealed, controlled environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If alternating linear sweeping is used for layer distribution, then the machine structure is simple, but the production capacity is low due to back-and-forth movements taking considerable time
Solution Approach 1:
The patent inverts the conventional linear sweeping approach by implementing continuous circular rotation of the container. Instead of moving the distribution mechanism back and forth linearly, the container rotates continuously in a circular path, allowing the distribution mechanism to deposit material along a circular trajectory. This inversion eliminates the idle time associated with reversing direction and maintains constant motion, thereby significantly improving production capacity.
Solution Approach 2:
The patent introduces dynamic elements by making the container rotation speed adjustable and variable during the manufacturing process. The circular rotation can be modified in real-time to optimize for different part geometries, layer thicknesses, and material characteristics. This dynamic adjustment capability allows the system to adapt to varying production requirements, maintaining high productivity across different manufacturing scenarios.
2Productivity
If continuous circular rotation is implemented, then production capacity increases, but the device complexity increases with multiple motorized components
Solution Approach 1:
The patent implements multi-functionality by designing the rotating container to serve multiple purposes: it acts as both the support structure for the powder bed and the distribution mechanism carrier, provides temperature control through integrated heating/cooling elements, and enables various treatment operations through station-based processing. This consolidation of multiple functions into a single rotating assembly reduces the need for separate motorized components and control systems, thereby limiting the increase in device complexity.
Solution Approach 2:
The patent divides the manufacturing process into discrete functional stations arranged around the circular container path. Each station performs a specific operation (material distribution, temperature control, laser processing, etc.), allowing independent optimization and maintenance of each function. This segmentation enables the system to achieve high productivity through continuous operation while managing complexity by modularizing the functional components.
3Productivity
If temperature control is not continuously regulated, then the device complexity is reduced, but the cooling time increases which slows down production
Solution Approach 1:
The patent implements continuous temperature control throughout the manufacturing process by integrating heating and cooling elements within the rotating container structure. Temperature regulation occurs continuously during material deposition, layer consolidation, and between layers, eliminating idle cooling time. The system maintains optimal temperature conditions throughout the entire production cycle, ensuring that no time is lost to cooling operations and maximizing production speed.
Solution Approach 2:
The patent applies preliminary temperature control by pre-heating or pre-cooling the container and material bed before each layer deposition. This preliminary action ensures that the material is at the optimal temperature for bonding and processing before it is deposited, preventing the need for extended cooling periods after deposition. By preparing the thermal conditions in advance, the system maintains continuous productivity without sacrificing temperature control quality.
4Manufacturing precision
If independent temperature control stations are added, then manufacturing precision is improved, but the device complexity increases
Solution Approach 1:
The patent merges the temperature control functionality into the rotating container structure itself, combining heating elements, cooling channels, and temperature sensors within the container walls and base. This integration eliminates the need for separate external temperature control devices and complex interconnections, achieving precise temperature control while minimizing the increase in device complexity. The merged design allows for efficient heat transfer and uniform temperature distribution across the powder bed.
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 significantly enhances the capacity and efficiency of layer-by-layer manufacturing by enabling rapid production of complex shapes with precise temperature control and reduced processing time, improving the handling of circular and helical parts.
Implementation Method 1
the fourth (4) is that where the useful surfaces of the layer of product to be kept are swept either by the laser to melt them
Implementation Method 2
a fifth (5) makes it possible to control and regulate the temperature of the layer just deposited, preferably using a hollow cylinder with a controlled and regulated temperature
Implementation Method 3
the third (3) makes it possible to control and regulate the temperature of the next layer with a stationary plate, which is preferably microporous
Data Source
AI summary
The invention relates to a machine for the layer-by-layer production of objects, comprising: a circular rotary container arranged in the lower part (B), the inside thereof being provided with independently and vertically motor-driven cylindrical crowns (7); and a stationary part that tops the container. The machine also includes at least one production unit comprising a first station (1) for distributing the layer of product, a second station (2) for evening out the thickness of the layer, a third station (3) for controlling and regulating the temperature of the next layer, a fourth station (4) for solidifying the useful surfaces of the layer of product, a fifth station (5) for controlling and regulating the temperature of the layer that has just been deposited, and a sixth station (6) for treating and impregnating the layer.