印刷过程中墨辊转速对油墨温度场的影响

为研究印刷过程中墨辊转速对油墨温度场的影响,运用有限元模拟软件Ansys Workbench CFX对油墨温度场进行流体温度场模拟仿真,分析出不同墨辊转速对油墨流场温度的影响,以及壁面油墨和挤压区域油墨温度的变化趋势,并通过油墨印刷适性仪实验平台对模拟仿真分析进行实验验证,使用红外热像仪分别获取不同时刻的油墨温度场整体云图,以及挤压区域油墨温度的实时变化数据.最终通过实验与仿真的对比分析,得出墨辊转速对油墨温度场的影响规律:当两辊压力一定时,墨辊转速对油墨稳态的温度有比较大的影响;在不考虑有新油墨流入与高温油墨流出时,挤压区域油墨温度随着墨辊转速的升高而升高.

Influence of Ink Roller Speed on the Ink Temperature Field in the Printing Process

In this paper, the finite element simulation software Ansys Workbench was used to simulate the influence of ink roller speed in the ink temperature field during the printing process. Different ink roller speed the influence of the temperature of the ink flow field, the temperature change trend of the surface ink and the extrusion area ink was analyzed. And the experiment platform of ink printability tester was used for experimental verification of simulation analysis. Using the infrared thermal imager, the ink temperature field cloud picture of different time and the ink temperature at real-time data of extrusion area were obtained respectively. Finally through the contrastive analysis of the experiment and simulation,the effect of ink roller speed on the printing ink temperature field was obtained. When the pressure between the two rollers keeps constant, the ink roller speed has larger influence on the ink temperature in steady-state, without considering the new ink inflow and high temperature ink outflow, the ink temperature at extrusion area increases with increase of the ink roller speed.