套袋机热封刀拓扑分析及结构优化

Topology analysis and structure optimization of the heat-sealing knife of the bagging machine

为了降低热封刀的加热等待时间,同时将加热管产生的能量集中到热封膜接触面上,本文对包装机中热封刀结构进行改进.首先,我们建立热封刀温度场模型,并检验模型的准确性;然后,利用Ansys Workbench中目标驱动优化工具对热封刀特定尺寸进行优化;其次,利用Ansys Workbench中Genesis模块对热封刀结构进行拓扑分析并优化;在两者优化的基础上利用试凑法进行仿真实验,逐步调整热封刀尺寸.最终在封膜质量得到保证以及热封刀安装尺寸不变的情况下,加热管产生的能量大部分集中到封膜接触面上,而且封膜接触面的最高温度从160.25℃提高至373.61℃.结果表明借助Ansys Workbench仿真软件对热封刀结构进行改进,可以达到降低热封刀的加热等待时间,同时将加热管产生的能量集中到热封膜接触面上的目的.

In order to reduce heating waiting time of the heat-sealing knife,and concentrate energy generated by the heating tube on the contact surface of heat-sealing film,an improvement meoth is proposed for the structure of heat-sealing knife in the packaging machine.The temperature field model of heat-sealing knife is established first and its accuracy is verified.The goal-driven optimization tool in Ansys Workbench is then used to optimize the specific size of heat-sealing knife,and the topological analysis is performed and the structure of heat-sealing knife is optimized with the Genesis module in Ansys Workbench.On the basis of the two above optimization,the trial and error method is used in simulation experiments and the size of the heat sealing knife is gradually adjusted.Finally,under the condition that the quality of the sealing film is guaranteed and the installation size of the heat sealing knife remains unchanged,most of the energy generated by the heating tube is concentrated on the sealing film contact surface,and the maximum temperature of the sealing film contact surface is increased from 160.25℃to 330.11℃.According to the simulation result,with the help of Ansys Workbench simulation software,the structure of heat-sealing knife is improved,which can achieve the purpose of reducing heating waiting time of the heat-sealing knife,and the energy generated by the heating tube is concentrated on the contact surface of heat-sealing film at the same time.