Gel-Molded Ceramic 3D Printing Slurry Water Control
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Solution Overview
Problem
Existing ceramic 3D printing devices struggle to accurately control the water content of slurry, leading to issues such as gelling agent coagulation or scattering, which affect molding quality and accuracy.
Innovation Solution
A ceramic 3D printing device with a feeding assembly, receiving assembly, scraping assembly, bearing assembly, scanning assembly, and spray assembly, equipped with humidity sensing and control mechanisms to manage water content through atomized liquid introduction and flow rate adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gelling agent is added to water-based slurry to improve product quality, then the slurry stability is improved, but the water content control becomes difficult causing gelling agent coagulation or scattering
Solution Approach 1:
The patent employs humidity sensors to detect the water content of slurry in real-time and feeds this information back to the control system. The controller adjusts the atomized water spray amount accordingly, forming a closed-loop feedback control system that maintains water content within the optimal range of 10-20%, preventing gelling agent coagulation while ensuring slurry stability.
Solution Approach 2:
The patent changes the physical state of water addition from bulk liquid to atomized spray, and dynamically adjusts the water content parameter within the optimal range of 10-20%. This parameter control prevents the gelling agent from coagulating due to excessive water volatilization, while maintaining slurry stability for high-quality ceramic 3D printing.
2Reliability
If water content is increased to prevent gelling agent coagulation, then the slurry stability is improved, but the refraction and scattering effects increase affecting laser curing
Solution Approach 1:
The patent precisely controls water content within the optimal range of 10-20% through atomized spray addition, avoiding both coagulation (from too little water) and excessive refraction/scattering (from too much water). This parameter optimization resolves the contradiction between stability and laser curing quality.
3Strength
If water volatilization is allowed during storage and molding, then the gelling agent transitions from dispersed to gel state improving strength, but the water content becomes uncontrolled affecting molding quality
Solution Approach 1:
The patent performs preliminary action by adding atomized water to maintain optimal water content (10-20%) before the gelling agent needs to transition to gel state. This preliminary water supplementation ensures the slurry remains stable during storage and molding, preventing uncontrolled water loss that would compromise molding quality while still allowing controlled gel transition for strength development.
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
Accurate control of slurry water content prevents gelling agent coagulation and scattering, enhancing the strength of cured layers and improving molding precision.
Implementation Method 1
a spray assembly (6), wherein the spray assembly (6) comprises an atomizing box (61) for atomizing liquid, and a first spray pipe (62) and a second spray pipe (63) that communicate with the atomizing box (61)
Implementation Method 2
The scanning assembly is arranged over the molding cylinder and can scan and cure the slurry on the molding cylinder according to a preset pattern
Data Source
AI summary
The present disclosure provides a ceramic three-dimensional (3D) printing device based on a gel molding process and a control method. The ceramic 3D printing device based on a gel molding process includes a feeding assembly, a receiving assembly, a scraping assembly, and a spray assembly. The feeding assembly includes a feeding pump and a storage hopper. The receiving assembly includes a feeding rod. The feeding pump can convey slurry in the storage hopper to the feeding rod. The control method includes introducing the atomized liquid into the storage hopper and the bearing groove through the first spray pipe and the second spray pipe respectively. According to the present disclosure, a water content of the slurry can be controlled to achieve a better curing effect.