Construction 3D Printer Roller for Surface Flattening
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Solution Overview
Problem
Conventional 3D printers for construction produce structures with discontinuous surfaces between layers, leading to irregularities and structural instability, necessitating post-treatment processes that increase construction time and costs.
Innovation Solution
A 3D printer with a roller mounted on a movable body that follows a nozzle, where the roller's outer surface contacts and flattens the printed object, allowing simultaneous surface flattening and densification, and includes a rotatable body and elastic connections for flexible movement and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a 3D printer extrudes linear layers to form structures, then construction time is reduced and formability is improved, but discontinuous surfaces and irregularities form between layers
Solution Approach 1:
The roller is introduced to perform preliminary surface flattening action immediately after each layer is extruded, before the next layer is deposited. This preliminary action prevents surface irregularities from accumulating and ensures continuous surface formation throughout the printing process.
Solution Approach 2:
The roller acts as an intermediary element between the extruded layers. It mediates the transition between discrete linear extrusions by smoothing and flattening the surfaces, creating a continuous appearance and eliminating the discontinuous boundaries that would otherwise exist between layers.
2Manufacturing precision
If post-treatment surface processing is performed manually, then surface irregularities are corrected, but construction time increases and costs rise
Solution Approach 1:
The system performs surface flattening automatically as part of the printing process itself. The roller is integrated into the printing mechanism and operates autonomously to smooth each layer immediately after extrusion, eliminating the need for separate manual post-treatment operations.
Solution Approach 2:
The surface flattening function is merged with the printing process. Instead of being separate sequential operations (printing then post-treatment), the roller integration combines both functions into a single simultaneous process, where layer deposition and surface smoothing occur together.
3Shape
If layers are stacked to form three-dimensional structures, then structural complexity is increased, but surface discontinuities and bonding weaknesses are created
Solution Approach 1:
Surface flattening is performed as a preliminary action before subsequent layers are deposited. By ensuring each layer has a flat, smooth surface before the next layer is applied, the bonding interface between layers is optimized, leading to stronger interlayer adhesion and more reliable structural integrity.
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 rapid and reliable surface flattening, improving the appearance and structural stability of printed structures by eliminating the need for post-treatment processes, reducing construction time and costs.
Implementation Method 1
an outer peripheral surface of the roller 50 is in contact with the surface of a printed object, thereby rolling the surface of the printed object
Data Source
AI summary
The present invention relates to a 3D printer for construction for printing and forming various structures wherein a roller 50 follows a nozzle 10 which discharges concrete, mortar, or the like, to bring an outer peripheral surface of the roller 50 to be in close contact with a surface of the printed object, and thus the surface of the printed object is flattened.According to the present invention, a high-degree surface flattening work can be performed on the surface of a printed object simultaneously as the printed object is printed by a 3D printer for construction, thus enabling rapid and reliable flattening of the printed object and smooth surface forming.