FDM工艺的散热机构的改善  

Improvement of Heat Dissipation Mechanism of FDM Process

作　　者：王占礼[1] 张洋 任元 高山山 WANG Zhan-li;ZHANG Yang;REN Yuan;GAO Shan-shan(School of Mechatronic Engineering,Changchun University of Technology,Jilin Changchun 130012,China)

机构地区：[1]长春工业大学机电工程学院,吉林长春130012

出　　处：《机械设计与制造》2018年第10期82-84,88,共4页Machinery Design & Manufacture

基　　金：吉林省科技发展计划重点科技攻关项目-基于FDM技术的3D打印机研究与开发(20130206048GX)

摘　　要：3D打印机喷嘴的加热电偶处温度过高,将会导致大部分的温度传递到喷嘴的尾部,使得喷嘴内部的材料软化,出现材料倒流,倒流的材料回流后凝固堵塞喷嘴,影响打印效果。提高FDM工艺3D打印的散热能力,运用鳍片式散热机构对喉管处降温,辅助以风扇增加流速,使温度降低到令倒流的熔融态材料凝固。计算了鳍片式散热结构的散热量,建立鳍片式散热结构模型,运用workbench进行仿真,通过研究发现散热最佳效果的相邻散热鳍片间距与鳍片厚度比为9:1,鳍片数量在(10～12)时候散热效果最佳。使散热效果得到显著改善。The heating temperature of the 3D printer nozzle is too high,it will cause most of the temperature which transfers to the nozzle finally,so that the internal material will be soften.Material will be flowed back,which material after becoming the solidification and blocking nozzle,the effect of printing always be infected.Increasing the cooling capacity of FDM process 3D printing,using fin type heat radiating mechanism to cool the throat,which be aided by the fan to increases flow velocity,so as to reduce temperature to melt solidification,and material will be to go back fluently.Calculated the dissipation that the number of heat by fin type heatstructure and established fin type radiating structure model,using workbench simulation,based on the study found that the best adjacent of fin spacing and fin thickness ratio is 9:1,heat of dissipation would be effected well,the number of fins in(10~12)is the best cooling effect.The cooling effect is improved significantly.

关 键 词：倒流 喉管 流速 鳍片式 间距 

分 类 号：TH16[机械工程—机械制造及自动化]