Multi-stage Powder Additive Manufacturing with Parallel Processing
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Solution Overview
Problem
Current powder additive manufacturing methods are limited in productivity, requiring sequential execution of multiple processes in a single apparatus, which hampers efficient production of desired products.
Innovation Solution
A powder additive manufacturing apparatus with multiple molding stages, a stage conveyance mechanism, and elevation control mechanisms that allow for the successive conveyance and processing of powder layers in a continuous manner across multiple processing sections, enabling parallel execution of different processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a batch method is used to manufacture products by successively performing multiple different processes one after another in one apparatus, then the manufacturing process can be completed, but the productivity is low
Solution Approach 1:
The manufacturing system is divided into multiple molding stages (first molding stage, second molding stage, third molding stage) that can operate independently and simultaneously. Each stage performs a specific process (powder spreading, laser heating, crystallization control), allowing parallel processing and eliminating the sequential bottleneck of batch methods.
Solution Approach 2:
The invention transitions from a single-stage sequential process to a multi-stage parallel process by adding the dimension of process parallelization. Multiple molding stages are arranged in the processing area, enabling simultaneous execution of different manufacturing operations that were previously performed sequentially in time.
2Ease of manufacture
If multiple different processes are performed sequentially in one apparatus, then all necessary manufacturing steps can be completed, but the manufacturing efficiency is reduced
Solution Approach 1:
The manufacturing process is segmented into distinct functional stages: powder spreading (first molding stage), laser heating (second molding stage), and crystallization control (third molding stage). This segmentation allows each process to be optimized independently and executed in parallel, improving overall manufacturing efficiency.
Solution Approach 2:
The multi-stage molding system enables continuous manufacturing operation where different stages operate simultaneously and continuously. The first, second, and third molding stages can process different powder layers at the same time, eliminating idle time between operations and maintaining continuous productive action throughout the manufacturing process.
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 approach significantly enhances the efficiency of manufacturing by allowing simultaneous processing across multiple stages, thereby improving the productivity of powder additive manufacturing.
Implementation Method 1
applying a laser to the powder bed on which the powder has been spread, thereby melting and solidifying the powder
Implementation Method 2
melting and solidifying the powder
Implementation Method 3
melting and solidifying the powder
Implementation Method 4
The stage conveyance mechanism conveys the plurality of molding stages in a process proceeding direction
Implementation Method 5
The plurality of elevation control mechanisms control heights of the plurality of molding stages, respectively, in the processing area
Implementation Method 6
the mixed powder is spread across the molding table by using a blade
Data Source
AI summary
A powder additive manufacturing apparatus includes a plurality of molding stages, a stage conveyance mechanism, and a plurality of elevation control mechanisms. Each of the plurality of molding stages includes a main surface over which powder can be placed, the powder being an object to be processed. The stage conveyance mechanism conveys the plurality of molding stages in a process proceeding direction in a processing area including a plurality of processing sections in which the plurality of molding stages are arranged along the process proceeding direction. The plurality of elevation control mechanisms control heights of the plurality of molding stages, respectively, in the processing area.