基于Fluent的某卷烟机搭口胶枪喷嘴流体仿真分析

Fluid Simulation Analysis of a Cigarette Machine’s Mouth Glue Gun Nozzle Based on Fluent

为解决高速卷烟机搭口胶喷涂过程中出现的涂胶不均匀等问题,利用Fluent模拟搭口胶的涂胶工艺,通过改变喷嘴的进口压力观察胶液出口黏度和出口流速的变化。首先利用Solid Works对搭口胶喷嘴进行建模,然后分析Fluent模拟搭口胶喷胶涂胶过程,最后通过实验测试详细分析在不同进口压力条件下胶液的黏结性能,包括初黏性和抗T型剥离强度。仿真结果表明,喷嘴的出口黏度随着进口压力的升高而逐渐降低,出口流速刚好相反,即随着出口压力的升高而增加。搭口胶的黏结性能随着进口压力的增加而降低的。利用搭口胶喷涂的流体仿真模拟对卷烟生产工艺进行优化具有一定的指导作用。

In order to solve the problems of uneven glue application during the spraying of lap glue in high-speed machines,the glue application process was simulated by Fluent,and the changes of glue outlet viscosity and outlet flow rate were observed by changing the inlet pressure of the nozzle.Firstly,Solid Works was used to model the lap glue nozzle,then Fluent was analyzed to simulate the lap glue spraying and gluing process,and finally the adhesive performance,including initial viscosity and T-peel resistance,was analyzed in detail by experimental tests under different inlet pressure conditions.The simulation results show that the outlet viscosity of the nozzle gradually decreases with the increasing in inlet pressure,while the outlet flow rate is just the opposite,i.e.,it increases with the increasing in outlet pressure.The two adhesive properties of the outlet glue under the difference of the inlet pressure also differ,mainly in that the apparent viscosity of the outlet of the lap nozzle decreases with the increase of the inlet pressure,resulting in a certain degree of reduction of its adhesive properties.The fluid simulation of lap gum spraying is useful for the optimization of cigarette production process.