基于ANSYS的木塑挤出3D成型研究

3D Extrusion of WPC Molding Based on ANSYS

针对目前3D成型技术原材料单一以及木塑挤出成型的局限性,提出了一种木塑挤出3D成型方法。建立了三维成型平台与挤出部分的匹配关系;探究了在成型层厚度为0.5 mm,挤出速度匹配范围在12.74~63.69 mm/s的条件下,动模板移动速度范围为20~100 mm/s。通过分析聚丙烯基木塑复合材料成型温度场和应力场模拟得出:随着动模板移动速度提高,应力波动减小,成型过程中的最大应力值和最大变形量增大。研究表明,动模板移动速度是木塑挤出3D成型的一个重要因素。在实际生产中,为保证成型效率和质量,可以适当提高动模板移动速度,同时也要按照匹配关系提高挤出速度。

In view of the limitation of 3D molding technology,raw material and wood plastic extrusion molding,a 3D molding method for wood plastic extrusion was put forward. The matching relationship between the three dimensional forming platform and extrusion part was established.. With 0. 5 mm thickness of the molding layer and under 12. 74 ~63. 69 mm/s range of the extrusion speed,the speed range of the moving plate was 20 ~ 100 mm/s. Through the analysis of polypropylene wood plastic composite material forming temperature field and stress field simulation,the stress fluctuation decreased with the speed of the moving template increasing,and the maximum stress and the maximum deformation increased during the forming process. The research shows that the moving speed of the moving plate is an important factor in wood plastic extrusion molding with 3D. In actual production,in order to ensure the molding efficiency and quality,the moving speed of the moving plate can be increased appropriately,and the extrusion speed should be improved according to the matching relation.