基于磁制冷的FDM型3D打印机喷头的研究与设计
发布时间：2018-07-13 07:40
【摘要】：为了解决熔融沉积(FDM)型3D打印机使用过程中经常遇到的喷头堵塞问题,基于磁制冷技术,研究和设计了一种新型的3D打印机喷头。该打印机喷头的送丝机构,设计有压力传感器,可对导轮和挤出轮之间的压力进行数字化调节;喉管冷却组件采用高温导热油作为热交换介质,其冷却管采用沉浸式蛇管结构;基于磁制冷原理设计的制冷装置,配置有两条封闭循环的热交换液通道;喉管组件两端分别设置有耐高温的氟橡胶密封圈;喷头热端组件采用正的温度系数(PTC)加热器作为加热源,并设计有防热辐射保温罩。控制装置能够采用比例-积分-微分(PID)控制方式调节喉管组件的温度。研究表明,该喷头的上述设计特点,可有效地解决FDM型3D打印机工作时遇到的喷头堵塞问题,并能够提高模型的表面质量。
[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.
【作者单位】： 西京学院机械工程学院;
【基金】：陕西省自然科学基础研究计划资助项目(项目批准号:2013JM8040) 西京学院研究生创新基金项目(项目名称:FDM快速成型机调平装置与送料架及挤出机构的优化设计与实现)
【分类号】：TP334.8
，
本文编号：2118657
[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.
【作者单位】： 西京学院机械工程学院;
【基金】：陕西省自然科学基础研究计划资助项目(项目批准号:2013JM8040) 西京学院研究生创新基金项目(项目名称:FDM快速成型机调平装置与送料架及挤出机构的优化设计与实现)
【分类号】：TP334.8
，
本文编号：2118657
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