3D Printing Spray Head Vibrating Rod Concrete Fluidity
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Solution Overview
Problem
Existing construction methods for building external walls with thermal insulation and decoration are cumbersome, requiring complex procedures, long construction times, and significant waste, due to challenges in achieving the right consistency of concrete slurry, which is either too thin and hard to set or too thick and difficult to cast.
Innovation Solution
A construction member 3D printing spray head with a vibrating rod, comprising a cylindrical vibrating body, cable wire, guide wheels, clamp, wire rope, electrical winding drum, and a flat vibrator, which improves concrete fluidity by vibrating the concrete within the hopper, ensuring optimal printing efficiency and reducing construction time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the concrete slurry is made thinner to improve fluidity, then the casting becomes easier, but the setting difficulty increases and strength assurance becomes hard
Solution Approach 1:
The patent applies a vibrating rod that vibrates at a frequency of 28-32 Hz to the concrete slurry during the 3D printing process. This mechanical vibration reduces the internal friction and improves the fluidity of the concrete, allowing it to flow smoothly through the printing nozzle and layer without requiring the mixture to be overly thin, thus maintaining both castability and structural integrity.
2Strength
If the concrete material is made thicker to improve strength, then the structural integrity improves, but the fluidity becomes poor and casting becomes difficult
Solution Approach 1:
The vibrating rod operates at 28-32 Hz during the printing process to temporarily enhance the fluidity of thicker concrete mixtures as they are being extruded and layered. This allows the use of thicker, stronger concrete formulations without sacrificing the ability to cast them properly, as the vibration compensates for the reduced fluidity during the critical printing phase.
Solution Approach 2:
The vibration is applied periodically during the printing process rather than continuously, synchronized with the layering action. This periodic vibration provides just enough fluidity enhancement during material deposition while allowing the concrete to maintain its structural properties between layers, enabling the use of thicker mixtures with better strength characteristics.
3Reliability
If conventional step-by-step construction methods are used for external walls with thermal insulation and decoration, then each component can be constructed with proper quality control, but the construction procedure becomes complicated and time-consuming
Solution Approach 1:
The patent combines multiple construction functions into a single 3D printing system that can deposit concrete, thermal insulation material, and decorative elements in an integrated manner. The multi-material printing capability allows different materials to be deposited in sequence or simultaneously, creating layered structures that combine structural, insulating, and aesthetic functions in one construction process, eliminating the need for separate formwork, insulation installation, and decoration steps.
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 vibrating rod and flat vibrator enhance concrete fluidity without altering batching parameters, thereby shortening printing time and improving the quality of constructed walls, meeting the requirements for integrated building wall printing.
Implementation Method 1
The present application improves the fluidity of the concrete by vibrating the vibrating rod and the flat vibrator
Implementation Method 2
The side wall of the receiving hopper is fixedly provided with a flat vibrator
Data Source
AI summary
A construction member 3D printing spray head with vibrating rod which includes a frame, a receiving hopper, a vibrating rod and a lifting device; the vibrating rod includes a cylindrical vibrating body and cable wires connected to the cylindrical vibrating body. The lifting device includes a set of guide wheels, clamp, wire rope, electrical winding drum. Wherein, the cylindrical vibrating body is located within the receiving hopper. The cable wire which is connected to the cylindrical vibrating body extends outside the receiving hopper via the space between the wheels of the set of guide wheels arranged above the receiving hopper. One side of the clamp clamps the cable wire that is outwardly extended, while the other side of the clamp clamps the wire rope. The wire rope is wrapped around the electrical winding drum.