3D Printing Bypass System for Construction Material Flow Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing 3D printing systems for construction materials face issues with poor print quality due to pressure fluctuations during pauses, leading to fragile areas and dimensional inaccuracies, and are complicated by the need for multiple pumps and screws, increasing the risk of blockages and weight on the print head.
Innovation Solution
A 3D printing system with a reservoir, pump, and print head connected via a main conduit, featuring diversion means with valve modules that maintain constant output flow during pauses by recirculating material and controlling pressure through a sequence of valve operations, including a first valve module between the main and additional conduits, and a second valve module between the print head and main conduit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If printing is stopped and restarted to create openings or complex parts, then design flexibility is improved, but print quality deteriorates due to pressure fluctuations
Solution Approach 1:
The bypass conduit maintains continuous material flow through the system even when the print head is closed. The pump keeps circulating material through the bypass path, preventing pressure drops and ensuring that when printing resumes, the material stream immediately returns to proper dimensions without quality degradation.
Solution Approach 2:
The bypass conduit acts as an intermediary pathway that allows material to continue flowing through the system when the main printing path is blocked. This intermediate flow path prevents the harmful effect of pressure fluctuations while the print head remains closed, resolving the contradiction between being able to pause printing and maintaining print quality.
2Ease of operation
If traditional start/stop mechanisms with screws and multiple pumps are used, then printing control is improved, but device complexity increases
Solution Approach 1:
The invention removes the complex screw mechanisms and multiple pumps from the system. Instead of using active control elements like screws to manage material flow during pauses, the system extracts these unnecessary components and replaces them with a passive bypass conduit that automatically maintains flow continuity.
Solution Approach 2:
The bypass conduit merges with the existing main conduit to form an integrated flow path. Rather than adding separate complex control mechanisms, the bypass path is combined with the main material delivery system, creating a unified structure that simplifies the overall device while maintaining printing control capability.
3Ease of operation
If traditional start/stop mechanisms are used, then printing control is improved, but print head weight increases
Solution Approach 1:
The invention extracts and removes heavy screw mechanisms and additional pump components from the print head assembly. By eliminating these weighty elements and replacing them with a simple bypass conduit integrated into the existing system, the print head weight is significantly reduced while retaining the ability to control printing pauses.
4Ease of operation
If traditional start/stop mechanisms are used, then printing control is improved, but risk of material blockage increases
Solution Approach 1:
The bypass conduit ensures continuous material circulation through the system, preventing material from stagnating in the conduits or print head. This continuous flow action eliminates the blockage risks associated with stopping and restarting material flow, significantly improving system reliability while maintaining printing control.
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 system ensures consistent print quality by maintaining pressure during pauses and simplifies the print head design, reducing the risk of blockages and weight, while allowing for complex part creation without the need for multiple pumps and screws.
Implementation Method 1
a pump for bringing said material from the reservoir to the print head
Implementation Method 2
a first valve module arranged between the main conduit and the additional conduit
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention relates to a three-dimensional material printing system (1) comprising a material reservoir (20) connected to a print head (10) via a main conduit (40), said system further comprising a pump (50) for bringing said material from the reservoir to the print head, characterized in that said printing system further comprises bypass means (70) arranged at the level of the main conduit, said bypass means comprising an additional conduit (702) extending from the main conduit and a first valve module (700) arranged between the main conduit and the additional conduit.