3D Shaping Nozzle Geometry for Stable Tip Temperature
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Solution Overview
Problem
Existing three-dimensional shaping apparatuses face inefficiencies in heat transmission from the heating unit to the nozzle tip, leading to suboptimal material ejection temperatures.
Innovation Solution
The apparatus features a nozzle design with specific dimensions and positioning to enhance heat transmission, including an introduction port and ejection port configuration, and a heating unit placement that ensures efficient heat distribution to the nozzle tip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the nozzle length in the center line direction is increased to improve heat transmission to the nozzle tip, then the temperature stability at the nozzle tip improves, but the nozzle may contact the stage and the device complexity increases
Solution Approach 1:
The nozzle is designed with asymmetric dimensions where the length in the direction orthogonal to the center line (L1) is made equal to or more than twice the length in the center line direction (L2). This asymmetric geometry optimizes heat transmission path while preventing stage contact, resolving the contradiction between temperature stability and device complexity.
Solution Approach 2:
The invention specifies precise parameter relationships (L1 ≥ 2×L2) and positional constraints (nozzle outside the defined cone) to optimize heat transmission. By changing the geometric parameters within these defined ranges, the nozzle achieves stable temperature at the tip without excessive complexity or stage contact.
2Loss of energy
If the heating unit is positioned closer to the nozzle to improve heat transmission efficiency, then the energy loss reduces, but the nozzle temperature stability may be compromised without proper geometric configuration
Solution Approach 1:
The heating unit is positioned to heat specific regions of the nozzle flow path, with the nozzle geometry (L1 ≥ 2×L2) designed to distribute this localized heat efficiently to the tip. This local quality approach ensures energy efficiency while maintaining temperature stability through optimized heat distribution paths.
3Manufacturing precision
If the nozzle dimensions are optimized for heat transmission, then the manufacturing precision of the shaped object improves, but the ease of manufacture of the nozzle decreases
Solution Approach 1:
The invention defines specific parameter relationships (L1 ≥ 2×L2 and positional constraints relative to a cone) that optimize manufacturing precision. These parameter changes enable precise control of material ejection and heat distribution, improving shaped object accuracy while providing clear manufacturing guidelines.
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 design stabilizes the nozzle temperature, enabling accurate shaping by maintaining optimal ejection conditions and reducing the risk of nozzle contact with the stage.
Implementation Method 1
a heating unit being provided to the flow path forming unit and being configured to heat the plasticized material
Implementation Method 2
a nozzle being coupled to the flow path forming unit and being configured to eject the plasticized material
Data Source
AI summary
A three-dimensional shaping apparatus includes a plasticizing unit configured to generate a plasticized material, a flow path forming unit including a flow path through which the plasticized material flows, a nozzle coupled to the flow path forming unit and configured to eject the plasticized material, and a heating unit provided to the flow path forming unit and configured to heat the plasticized material. The nozzle includes an introduction port communicating with the flow path and is configured to introduce the plasticized material and an ejection port communicating with the introduction port and configured to eject the plasticized material. A length of the nozzle in a direction orthogonal to a direction of a center line and pas through a center of the introduction port and a center of the ejection port is equal to or more than twice a length thereof in the direction of the center line.