Variable-Orifice-Size Nozzle for 3D Printing
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F25%3A10259253" target="_blank" >RIV/61989100:27230/25:10259253 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/2504-4494/9/9/308" target="_blank" >https://www.mdpi.com/2504-4494/9/9/308</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/jmmp9090308" target="_blank" >10.3390/jmmp9090308</a>
Alternative languages
Result language
angličtina
Original language name
Variable-Orifice-Size Nozzle for 3D Printing
Original language description
This paper presents the general framework of the problem and the basis for the proposed idea, which lies in the design of a new extrusion nozzle for fused-deposition 3D printing, featuring a variable orifice that enables adaptive extrusion control to improve printing properties such as material efficiency, printing speed, and localized control of mechanical properties. The working principle is controlled compression, via a linear actuator, of a silicone sleeve installed inside a metal jacket. Constrained by the metal jacket, the diameter of the silicone sleeve's through-hole decreases with increasing compression. Three experiments were carried out to verify the functionality of the new nozzle design. The first two explored how the size of the nozzle orifice changes with movement of the linear actuator and the resulting silicone sleeve compression and decompression. In the third experiment, three sample parts were printed to demonstrate how the variable-orifice-size nozzle extruded PLA. The orifice diameter was set to 1.4 mm for the first condition, 0.7 mm for the second condition, and, in the third experiment, the first two conditions were combined. The orifice diameter was set to 1.4 mm for the first half of the object and then abruptly reduced to 0.7 mm for the second half. The prototype variable-orifice-size nozzle system demonstrated the potential of adaptive extrusion control for improved material efficiencies, faster printing times, and localized control of mechanical properties. However, it also revealed hysteresis of the silicone sleeve, a problem that must be addressed.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21100 - Other engineering and technologies
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Manufacturing and Materials Processing
ISSN
2504-4494
e-ISSN
2504-4494
Volume of the periodical
9
Issue of the periodical within the volume
9
Country of publishing house
CH - SWITZERLAND
Number of pages
19
Pages from-to
nestránkováno
UT code for WoS article
001580158400001
EID of the result in the Scopus database
2-s2.0-105017434402