Optimization design of color mixing nozzle based on multi physical field coupling

Chen, Yankai; Shi, Tingchun; Lu, Liangliang; Yue, Xiuyan; Zhang, Jianhui

doi:10.1088/1755-1315/233/3/032004

Cited by 4 publications

(4 citation statements)

References 11 publications

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“…[9] tried to approach this issue by developing a colour mixing nozzle for the FFF printer, which enabled the printing of multi-colour material with only a single nozzle. Also, Chen et al [4] in his work dealing with the design and analysis of a mixing nozzle.…”

Section: Introductionmentioning

confidence: 99%

Design of Dual-Head 3D Printer

Chalupa¹,

Staněk²,

Vanek³

et al. 2023

Manufacturing Technology

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Fused Filament Fabrication (FFF) printers are usually designed to create a product with one single material. Some of them allow fabricating items in multiple colours but creating a single product consisting of two different materials remains an advantage of industrial 3D printers only. The aim of this research was to develop a design of a device with two printheads which enables to print products with two different materials, compatible with a cheap and commonly available FFF device Prusa i3MK2S, and the subsequent production of a prototype. A key aspect of the design was the hardware compatibility of the device with the given printer while maintaining the maximum possible printing area. Dual extrusionMulti-material 3D print FFF printer

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Section: Introductionmentioning

confidence: 99%

Design of Dual-Head 3D Printer

Chalupa¹,

Staněk²,

Vanek³

et al. 2023

Manufacturing Technology

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“…Most of the existing FDM printers employ indirect resistive heating of the nozzle [ 38 ]. At the same time, such systems are characterized by a big mass of the hotend assembly (from 20 g), low temperature limit (up to 260–300 °C), low power (~70 W) and sensitive to sudden temperature changes heating elements [ 39 , 40 , 41 , 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

“…Hence, the sensor provides point measurement of hotend assembly temperature far away from the resistive heating element and the nozzle. This results in uneven heating of the nozzle and the extruded material (up to 20 °C) [ 43 , 44 ].…”

Section: Introductionmentioning

confidence: 99%

“…As the result of the analysis, the drawbacks of the conventional extruder for an FDM 3D printer were revealed: High thermal inertia (lag) of the hotend assembly (nozzle+heating block) does not allow rapid temperature regulation of the nozzle during printing; Design features of the conventional extruder and drawbacks of the described temperature control methods do not allow the provision of fast and precise temperature control of the extruded material; There is uneven heating of the nozzle and the extruded material (up to 20 °C) [ 43 , 46 ]. …”

Section: Introductionmentioning

confidence: 99%

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Indirect Temperature Measurement in High Frequency Heating Systems

Oskolkov

Bezukladnikov

Трушников

2021

Sensors

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One of the biggest challenges of fused deposition modeling (FDM)/fused filament fabrication (FFF) 3D-printing is maintaining consistent quality of layer-to-layer adhesion, and on the larger scale, homogeneity of material inside the whole printed object. An approach for mitigating and/or resolving those problems, based on the rapid and reliable control of the extruded material temperature during the printing process, was proposed. High frequency induction heating of the nozzle with a minimum mass (<1 g) was used. To ensure the required dynamic characteristics of heating and cooling processes in a high power (peak power > 300 W) heating system, an indirect (eddy current) temperature measurement method was proposed. It is based on dynamic analysis over various temperature-dependent parameters directly in the process of heating. To ensure better temperature measurement accuracy, a series-parallel resonant circuit containing an induction heating coil, an approach of desired signal detection, algorithms for digital signal processing and a regression model that determines the dependence of the desired signal on temperature and magnetic field strength were proposed. The testbed system designed to confirm the results of the conducted research showed the effectiveness of the proposed indirect measurement method. With an accuracy of ±3 °C, the measurement time is 20 ms in the operating temperature range from 50 to 350 °C. The designed temperature control system based on an indirect measurement method will provide high mechanical properties and consistent quality of printed objects.

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Thermal study of clogging during filament-based material extrusion additive manufacturing: experimental–numerical study

Taheri

Esfahani

Ramiar

2022

Int J Adv Manuf Technol

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One of the major drawbacks of material extrusion additive manufacturing (AM) is hot-end clogging. This study aims to answer the question, "What thermal conditions lead to clogging during filament-based material extrusion?" Answering this question requires a clear understanding of temperature distribution inside the liquefier. However, this could not be achieved only through experimental measurements. Therefore, numerical simulations were also carried out by developing a 3D finite volume model of the hot-end. The results obtained from numerical simulations show good agreement with experimental measurements. They also give us a detailed picture of the temperature gradient near the nozzle. Moreover, a series of experiments were performed to determine when clogging occurs, and some criteria for avoiding clogging were presented. These results were also compared and combined with the numerical results to investigate the thermal condition leading to clogging. As the results show, overheating the heat

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Optimization design of color mixing nozzle based on multi physical field coupling

Cited by 4 publications

References 11 publications

Design of Dual-Head 3D Printer

Design of Dual-Head 3D Printer

Indirect Temperature Measurement in High Frequency Heating Systems

Thermal study of clogging during filament-based material extrusion additive manufacturing: experimental–numerical study

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