Research On 3D Printing Process Of TPU Material Sole Based On FDM

With the advent of a new round of industrial revolution,digitalization and intelligentization have become the trend of future manufacturing.Among them,3D printing technology is a new material manufacturing growth appears in front of people and wide attention,along with the continuous development of 3D printing technology industry,which has been used more and more in the industry,and in the apparel industry in the application and attention are less.The purpose of this paper is to be applied to the sole 3D print print,through investigation and consultation with relevant industry personnel,choose the fused deposition molding method printing method and apparatus(FDM)and FDM printer,select the market more easily available flexible material TPU as printed materials,select layer height,printing speed,nozzle temperature of these three parameters as 3D printing the main factors,to study the influence on the performance of printing products appearance and mechanical properties of the material can be realized,from printing to the process of performance optimization,successful print 3D print TPU sole surface effect is good,has a certain degree of softness and feel.To a certain extent,this way alleviates the subjectivity and vagueness of 3D printing industry in parameter setting,and on the other hand,it will provide reference for future application of 3D printing technology in apparel and apparel industry.First,through single factor experiment and orthogonal experiment,the influence of printing parameters on print size error and surface print quality of printing samples is studied in two aspects,there solved the printability of materials,and obtained the best combination of related performance parameters.The results show that the average printing size error is optimal when the printing layer height is 0.3 mm,the printing speed is 45 mm/s,and the nozzle temperature is 190.Print height different impact parameters on the surface quality of printing printing is different,particularly when layer height is 0.2 mm,the top 8 layers,filling ratio of 20%,the printing speed of 35 mm/s,nozzle temperature of 190 or 200?,print the best surface quality;when the layer height is 0.3 mm,the top 8 layers,filling proportion 20%,nozzle temperature is 200?,the printing speed is 35 mm/s,print the best surface quality;when the layer height is 0.4 mm,the top 8 layers,the printing speed of 45 mm/s,20%,the proportion of filling nozzle temperature 190 or 200?,print the best surface quality.Then,through single factor experiments and orthogonal test on mechanical properties and print print parameters studied,including tensile,compression,surface properties and stiffness,optimal parameter combination printing performance.The research shows that when layer height is 0.3 mm,printing speed is 35 mm/s,nozzle temperature is 190?,the tensile properties is optimal.When layer height is 0.1 mm;printing speed is 35 mm/s,nozzle temperature is 205?,the compression performance is optimal;when layer height is 0.3 mm,printing speed is 45 mm/s,the nozzle temperature is 190?,the surface properties is optimal;with flexible demand,the optimal parameter combination is thickness of 0.4 mm,the height of 0.2 mm,the nozzle temperature of 220?,the printing speed of 45 mm/s;with rigid demand,the optimal parameter combination is the thickness of 1.0 mm,the height of 0.1 mm,the nozzle temperature 190?,the printing speed of 35 mm/s.Finally,based on the above research,considering the performance of all aspects,the optimal printing process parameters were obtained as layer height of 0.3 mm,printing speed of 35 mm/s,nozzle temperature of 205?,and the printing samples under this technological condition were tested for related properties.The experimental results show that the sample printed under this process has excellent performance.