【摘要】：為了解決熔融沉積(FDM)型3D打印機(jī)使用過程中經(jīng)常遇到的噴頭堵塞問題,基于磁制冷技術(shù),研究和設(shè)計(jì)了一種新型的3D打印機(jī)噴頭。該打印機(jī)噴頭的送絲機(jī)構(gòu),設(shè)計(jì)有壓力傳感器,可對導(dǎo)輪和擠出輪之間的壓力進(jìn)行數(shù)字化調(diào)節(jié);喉管冷卻組件采用高溫導(dǎo)熱油作為熱交換介質(zhì),其冷卻管采用沉浸式蛇管結(jié)構(gòu);基于磁制冷原理設(shè)計(jì)的制冷裝置,配置有兩條封閉循環(huán)的熱交換液通道;喉管組件兩端分別設(shè)置有耐高溫的氟橡膠密封圈;噴頭熱端組件采用正的溫度系數(shù)(PTC)加熱器作為加熱源,并設(shè)計(jì)有防熱輻射保溫罩。控制裝置能夠采用比例-積分-微分(PID)控制方式調(diào)節(jié)喉管組件的溫度。研究表明,該噴頭的上述設(shè)計(jì)特點(diǎn),可有效地解決FDM型3D打印機(jī)工作時(shí)遇到的噴頭堵塞問題,并能夠提高模型的表面質(zhì)量。
[Abstract]:In order to solve the problem of nozzle blockage often encountered during the use of FDM type 3D printer, a new type of 3D printer nozzle is designed and designed based on magnetic refrigeration technology. The feeder mechanism of the printer nozzle is designed with pressure sensor, which can adjust the pressure between the guide wheel and the extrusion wheel, and the throat cooling can be cooled. High temperature heat conduction oil is used as heat exchange medium, and the cooling tube is immersed in the immersed tube structure; the refrigeration device based on the principle of magnetic refrigeration is equipped with two closed circulation heat exchange fluid channels; the two ends of the pipe assembly are respectively set with high temperature resistant fluoro rubber seal ring, and the hot end component of the nozzle is heated by a positive temperature coefficient (PTC). As a heating source, the device is designed with a heat proof heat shield. The control device can adjust the temperature of the throat assembly by the proportional integral differential (PID) control mode. The research shows that the above design features of the nozzle can effectively solve the problem of nozzle blockage in the work of the FDM type 3D printer and improve the surface quality of the model.
【作者單位】： 西京學(xué)院機(jī)械工程學(xué)院;
【基金】：陜西省自然科學(xué)基礎(chǔ)研究計(jì)劃資助項(xiàng)目(項(xiàng)目批準(zhǔn)號:2013JM8040) 西京學(xué)院研究生創(chuàng)新基金項(xiàng)目(項(xiàng)目名稱:FDM快速成型機(jī)調(diào)平裝置與送料架及擠出機(jī)構(gòu)的優(yōu)化設(shè)計(jì)與實(shí)現(xiàn))
【分類號】：TP334.8
，

本文編號：2118657