Multi-material 3D Printer with Adjustable Binder Layer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Three-dimensional (3D) printing faces limitations in creating precise thin layers and achieving uniform powder deposition due to the in situ creation of patterned layers, which restricts material compatibility, layer density, and feature precision in powder bed-based processes.
Innovation Solution
A jetted binder printing system that includes a carrier substrate with an adjustable binder printer, a dispensing module for powder deposition, a compaction module for controlled powder compaction, and a primary binder printer, allowing for the separation of pattern generation and assembly steps, enabling the creation of stable and uniform powder layers on a carrier substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If in situ pattern generation is used to create the first layer of powder, then the process is simplified and does not require manipulation of layers, but it is difficult to generate a controlled and stable layer of fine powder on a smooth surface because the powder may be easily displaced
Solution Approach 1:
The patent applies preliminary action by depositing a binder layer on the carrier substrate before dispensing the powder. This binder layer is prepared in advance to provide a stable foundation that prevents powder displacement, thereby resolving the contradiction between process simplicity and layer stability.
Solution Approach 2:
The binder layer serves as an intermediary between the smooth carrier substrate and the powder layer. It mediates the interaction by providing adhesion and stability, allowing the powder to be held in place without requiring complex manipulation steps, thus maintaining process simplicity while improving layer stability.
2Productivity
If in situ build is used, then the first patterned layer can be created directly on a bed of powder layers, but it limits the capabilities to a single material to avoid cross-contamination and prevents conditioning the powder layer for desired density
Solution Approach 1:
The patent segments the build process into distinct functional modules: a binder deposition module that prepares the carrier substrate, a powder dispensing module that deposits material, and a compaction module that conditions the powder layer. This segmentation allows each module to be optimized independently, enabling multi-material compatibility and layer conditioning while maintaining efficient direct layer creation.
Solution Approach 2:
The system employs dynamic, adjustable modules that can be configured for different materials and parameters. The binder printer, powder dispenser, and compaction module can be dynamically adjusted to accommodate different material types and desired layer densities, providing versatility without sacrificing productivity.
3Productivity
If in situ build is used, then the process is streamlined, but it prevents the use of more than a single pattern generation method to optimize layer thickness and feature precision
Solution Approach 1:
The patent divides the pattern generation and layer creation functions into separate, specialized modules. The binder printer creates the foundational pattern, the powder dispenser adds material with precise thickness control, and the compaction module optimizes density. This segmentation allows each module to use optimized pattern generation methods, achieving both high productivity and manufacturing precision.
Solution Approach 2:
The modular system is designed with universal interfaces and coordinated control that allow multiple pattern generation methods to be integrated. Different printing techniques, dispensing patterns, and compaction strategies can be combined and coordinated to optimize both layer thickness and feature precision while maintaining process efficiency.
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 enables the production of 3D objects with improved precision and material compatibility, allowing for the use of multiple materials and optimized layer thickness, while facilitating the removal and correction of defective layers, thereby enhancing the capabilities of 3D printing systems.
Implementation Method 1
an adjustable binder printer configured to deliver an adjustable binder to the carrier substrate
Implementation Method 2
the compaction module being configured to apply a controlled pressure, in a direction substantially orthogonal to the longitudinal direction of the carrier substrate, to increase a compaction of the dispensed powder to a desired compaction range
Implementation Method 3
the primary binder printer including a print head configured to print a primary binder on the dispensed powder according to a desired pattern
Data Source
AI summary
A jetted binder printing system includes a carrier substrate configured to travel along a longitudinal direction thereof, an adjustable binder printer configured to deliver an adjustable binder to the carrier substrate, a dispensing module located downstream from the adjustable binder printer on the longitudinal direction of the carrier substrate, the dispensing module including at least one powder container, the dispensing module being configured to dispense powder onto the carrier substrate, and a primary binder printer located downstream from the compaction module along the longitudinal direction of the carrier substrate. The primary binder printer includes a print head configured to print a primary binder on the dispensed powder according to a desired pattern. The primary binder is printed on a surface of the powder that is opposite a surface on which the adjustable binder is printed. The primary binder is printed to match the pattern of the adjustable binder.