Selective Melting Additive Manufacturing System for Thermoplastic Layer Construction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current additive manufacturing methods, particularly transfer printing processes, are complex and often unable to process a wide range of thermoplastic materials due to electrostatic nature and equipment complexity, limiting their resource efficiency and individualization capabilities.
Innovation Solution
A method involving a system with a substrate, control unit, application unit, energy application unit, and contacting unit, where a fusible polymer layer is selectively melted and attached to a carrier or previous layers, allowing for the construction of objects with a wide range of materials in a resource-saving and individualized manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If transfer printing processes are used for additive manufacturing, then objects can be constructed layer by layer, but the process becomes complex and equipment requirements increase
Solution Approach 1:
The patent replaces complex mechanical transfer printing systems with a simplified selective melting system. Instead of using mechanical inkjet printers or transfer printing devices, the invention uses a melting device that selectively melts thermoplastic particles based on pattern data, dramatically reducing equipment complexity while maintaining additive manufacturing capabilities
Solution Approach 2:
The invention extracts and eliminates the complex transfer printing mechanism from the additive manufacturing process. By removing the need for transfer printing devices, form rollers, and intricate mechanical systems, the patent achieves additive manufacturing through a simpler selective melting approach that directly fuses particles to the object
2Adaptability or versatility
If electrostatic methods are used in transfer printing, then material transfer is achieved, but material versatility is limited
Solution Approach 1:
The patent changes the fundamental parameter of material bonding from electrostatic adhesion to thermal fusion. By using selective melting based on temperature control rather than electrostatic fields, the system can process a wide variety of thermoplastic materials with different electrical properties, significantly expanding material versatility
Solution Approach 2:
The invention substitutes electrostatic field-based material transfer with thermal field-based selective melting. This replacement allows diverse thermoplastic materials to be processed without being constrained by electrostatic properties, enabling broader material compatibility
3Loss of substance
If conventional additive manufacturing methods are used, then objects are built up in layers, but resource efficiency decreases due to material removal and support structures
Solution Approach 1:
The patent implements a self-service mechanism where unused thermoplastic particles automatically remain in place to support the built object and can be reused in subsequent layers. This eliminates the need for separate support structures and minimizes material waste, as particles serve dual purposes: as construction material and as support structure
Solution Approach 2:
The invention enables recovery and reuse of thermoplastic particles that are not melted during each layer construction. These particles remain on the build platform, providing support for subsequent layers and can be reused without removal or disposal, significantly reducing material waste
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 the production of complex geometries with a wide range of materials in a resource-efficient and individualized manner, overcoming the limitations of existing methods by simplifying the additive manufacturing process and improving material versatility.
Implementation Method 1
a layer with fusible polymer is selectively at least partially melted according to a selected cross-section of the object to be formed
Implementation Method 2
In the laser sintering process, the energy is introduced via a guided laser beam
Implementation Method 3
The at least partially melted material is attached layer by layer to a carrier or to previous layers connected to the carrier
Data Source
Figure 1~3
Figure 4~6
Figure 7~8
AI summary
A method for producing an article in which a layer (200) of meltable polymer is selectively melted at least partially. This takes place according to a selected cross section of the article to be formed. The at least partially melted material is added on layer by layer to a carrier (500) or to previous layers bonded to the carrier (500). A system that is suitable for carrying out the method according to the invention has a substrate (100), a control unit (600), an application unit (700) for applying the particles to the substrate (100), an energy exposure unit (700) and a contacting unit (800).