3D Modeling Nozzle Ejection Optimization via Groove Ratio
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Solution Overview
Problem
In three-dimensional modeling apparatuses using plasticization devices, the amount of ejection from nozzles with small diameters is reduced, leading to decreased modeling speed due to inadequate dimension settings of the nozzle and spiral groove.
Innovation Solution
The apparatus includes a drive motor, a screw with a groove formation surface, a barrel with a communication hole, and a nozzle, where the ratio of the average sectional area of the groove to its length is optimized relative to the nozzle's sectional area and length, within the range of 0.03≤(Ss/Ls)/(Sn/Ln)≤5.00, to enhance ejection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a nozzle with a small diameter is used for modeling a three-dimensional modeled article with dimensional precision, then manufacturing precision is improved, but the amount of ejection decreases and productivity deteriorates
Solution Approach 1:
The invention changes the geometric parameters of the spiral groove (sectional area Ss and length Ls) and nozzle (sectional area Sn and length Ln) to satisfy a specific ratio relationship: 0.03 ≤ (Ss/Ls)/(Sn/Ln) ≤ 5.00. This parameter optimization ensures that even with a small-diameter nozzle for precision modeling, the ejection amount is maintained at adequate levels by adjusting the groove dimensions relative to the nozzle dimensions.
2Quantity of substance
If the dimension of the nozzle and spiral groove are not appropriately set, then the amount of ejection decreases, but adjusting dimensions increases device complexity
Solution Approach 1:
Instead of independently optimizing multiple dimensions, the invention establishes a single ratio relationship (Ss/Ls)/(Sn/Ln) that combines the groove and nozzle dimensions. This reduces the complexity of dimension setting by providing a clear design guideline: as long as the groove and nozzle dimensions satisfy this ratio relationship within the specified range, adequate ejection amount is ensured without requiring complex multi-parameter optimization.
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 optimization significantly increases the amount of ejection from the nozzle, particularly when the ratio falls within 0.10≤(Ss/Ls)/(Sn/Ln)≤1.00, ensuring efficient material flow even with small-diameter nozzles, thereby improving modeling speed and precision.
Implementation Method 1
a barrel that has a facing surface facing the groove formation surface and having a communication hole at the center thereof and a heater
Implementation Method 2
a screw that has a groove formation surface with a groove formed therein and that is rotated by the drive motor
Data Source
AI summary
Provided is a three-dimensional modeling apparatus including: a drive motor; a screw that has a groove formation surface with a groove formed therein and that is rotated by the drive motor; a barrel that has a facing surface facing the groove formation surface and having a communication hole at the center thereof and a heater; and a nozzle that ejects a modeling material supplied from the communication hole, in which0.03≤(Ss/Ls)/(Sn/Ln)≤5.00 (1)where Ss is an average sectional area that is an arithmetic mean between a maximum sectional area and a minimum sectional area of the groove, Ls is a length of the groove, Sn is a sectional area of the nozzle, and Ln is a length of the nozzle.