Laminate Molding Device Heat Isolation Mechanism
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Solution Overview
Problem
Existing laminate molding devices face issues with thermal deformation of the drive mechanism, peripheral wall, and peripheral members due to heat transfer during the high-temperature molding process, leading to decreased molding accuracy and potential premature device failure.
Innovation Solution
A laminate molding device equipped with a heat source isolation mechanism that includes an intermediate table, an auxiliary table with adjustable temperature, and a bellows member made of insulating material, which isolates the heat source from the main table and peripheral wall, preventing direct heat transfer and thermal deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the molding table is heated to preheat material powder, then the material powder achieves desired hardness and density, but thermal deformation occurs in the drive mechanism and peripheral members
Solution Approach 1:
The molding table is divided into two independent tables: a first molding table that contacts the material powder and is heated to preheat it, and a second molding table that supports the drive mechanism and remains at room temperature. This segmentation allows the heated table to perform its thermal function while isolating the drive mechanism from thermal deformation, thereby maintaining manufacturing precision.
Solution Approach 2:
A transfer mechanism acts as an intermediary between the first heated molding table and the second room-temperature molding table. This intermediary allows the molded object to be transferred from the heated environment to the cool environment without exposing the drive mechanism to high temperatures, preventing thermal deformation while maintaining the preheating function.
2Temperature
If the molding table is heated for prolonged periods, then the material powder is properly preheated, but the peripheral members deteriorate and deform permanently
Solution Approach 1:
The peripheral members are separated into two groups: those associated with the first heated molding table (which are temporarily exposed to heat during operation) and those associated with the second room-temperature molding table (which remain cool). The drive mechanism and its supporting peripheral members are placed on the second table, ensuring they are not exposed to prolonged high temperatures and thus maintaining their reliability and preventing permanent deformation.
Solution Approach 2:
The transfer mechanism serves as an intermediary that allows the molded object to move from the heated first molding table to the cool second molding table. This intermediary system ensures that peripheral members supporting the drive mechanism are not continuously exposed to high temperatures, preventing deterioration while still allowing the first table to perform its preheating function.
3Temperature
If heat is transferred to material powder outside the emission area, then the peripheral wall and peripheral members experience thermal deformation
Solution Approach 1:
The molding space is segmented into a first space above the heated first molding table where material powder is preheated, and a second space above the cool second molding table where the drive mechanism is located. This spatial segmentation confines the thermal environment to the first space, preventing heat transfer to the peripheral wall and peripheral members in the second space, thereby maintaining the shape of the peripheral wall.
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 solution effectively prevents thermal deformation of the drive mechanism, peripheral wall, and peripheral members, allowing for high-temperature preheating of material powder while maintaining molding accuracy and extending device lifespan.
Implementation Method 1
a bellows member in which the auxiliary table is disposed and which includes a lower end that is provided on the intermediate table and an upper end that is mounted on the peripheral wall, and which expands as the main table is lowered, wherein the bellows member is made of an insulating material
Implementation Method 2
a laser emission unit configured to emit a laser beam to an emission area of the powder layer to form a sintered layer
Implementation Method 3
an auxiliary table which is provided on an upper surface of the intermediate table and of which a temperature can be adjusted
Data Source
AI summary
A heat source isolation mechanism of the laminate molding device includes an intermediate table that is mounted on an upper surface of a main table, an auxiliary table which is provided on an upper surface of the intermediate table and of which a temperature can be adjusted, and a bellows member in which the auxiliary table is disposed and which includes a lower end that is provided on the intermediate table and an upper end that is mounted on the peripheral wall, and which expands as the main table is lowered. The bellows member is made of an insulating material. The recoater head supplies a metal material powder to a molding area inside the bellows member and a powder layer is formed on the auxiliary table, a laser emission unit emits a laser beam to a predetermined area of the powder layer and sintering is performed.