真空封罐生产线关键部件的研究与设计

发布时间：2019-06-03 15:47

【摘要】：随着包装机械自动化技术的发展,人们对商品的包装质量以及企业对高效自动化生产的要求日渐提高。目前国内关于奶封罐抽真空封罐生产线进行系统的研究不多,抽真空封罐生产线普遍存在生产效率低、性能不稳定等缺点,针对这一现象,项目组在第一代真空封罐设备的基础上开发出一条真空封罐生产线。本课题源于广东工业大学校企合作项目(13HK0123),旨在设计出稳定、可靠的自动化真空封罐机生产线,提高生产效率。本文主要完成了以下工作：首先,简述了国内外封罐机械工业的发展现状与趋势,以及真空封罐生产线的工作原理和工艺流程,完成了整体结构的设计与布局。其次,针对奶粉盖的外形特点和叠放方式,完成下盖机构的结构设计。采用图解法确定下盖机构中核心部件组合刀盘的主要设计参数,然后对下盖机构三维模型进行运动仿真,得到刀盘边缘切入点角位移曲线,接着利用有限元分析软件对组合刀盘进行有限元分析,得到在3种不同大小的力的作用下刀盘边缘的形变,确保组合刀盘具有良好的可靠性和稳定性。再次,完成了分罐螺杆和星形拨盘机构的设计。根据三段组合式变距螺旋线的设计原理,建立分罐螺杆螺旋线的数学模型,并计算出分罐螺杆的各项参数值,接着完成星形拨盘机构的结构分析与参数计算。然后,对抽真空装置进行设计,主要包括转盘、卡槽转盘、抽真空腔体、导槽圆筒、机架等的结构设计,并对机架作有限元分析,使之满足设计要求。最后,讨论了二重卷封以及卷封的基本要素,并对卷封机构进行结构设计与分析,接着对卷封轮进行设计与研究,通过对卷封轮沟槽曲线的设计与尺寸计算,最后设计出适合本生产线的两个卷封轮。本论文完成的研究工作已经应用于企业的实际生产,并取得了预期的效果。
[Abstract]:With the development of the automation technology of the packaging machinery, the packing quality of the goods and the demand for high-efficiency and automatic production of the enterprises are increasing. At present, there is not much research on the production line of the vacuum-sealing tank of the milk-sealing tank, the production efficiency is low, the performance is not stable and the like in the production line of the vacuum-pumping and sealing can, and aiming at the phenomenon, The project team developed a vacuum tank production line on the basis of the first generation of vacuum tank equipment. The project is based on the cooperation project of Guangdong Industrial University (13HK0123), which is designed to design a stable and reliable production line of automatic vacuum can, and to improve the production efficiency. The paper mainly completes the following work: firstly, the present situation and trend of the mechanical industry of the sealing tank at home and abroad are briefly described, and the working principle and process flow of the vacuum sealing tank production line are briefly described, and the design and layout of the whole structure are completed. Secondly, the structural design of the lower cover mechanism is finished according to the outer shape characteristic and the stacking mode of the milk powder cover. in that method, the main design parameters of the combined cutter head of the core component in the lower cover mechanism are determined by the graphic method, the three-dimensional model of the lower cover mechanism is subjected to motion simulation to obtain an angular displacement curve of the edge of the cutter head, and the combined cutter head is subjected to finite element analysis by using the finite element analysis software, And the deformation of the edge of the cutter head under the action of three different sizes of force is obtained, so that the combined cutter head has good reliability and stability. Thirdly, the design of the sub-tank screw and the star-shaped dial mechanism is completed. According to the design principle of the three-section combined variable-distance spiral line, the mathematical model of the spiral line of the split-tank screw is established, and the parameter values of the sub-tank screw are calculated, and then the structural analysis and the parameter calculation of the star-shaped dial mechanism are completed. Then, the vacuum pumping device is designed, which mainly comprises the structural design of a turntable, a clamping groove turntable, a vacuum pumping cavity, a guide groove cylinder, a frame and the like, and the frame is subjected to finite element analysis so as to meet the design requirements. In the end, the paper discusses the basic elements of the double-volume seal and the volume seal, and the design and analysis of the roll-sealing mechanism, and then the design and the research of the roll-sealing wheel, and finally the two roll-sealing wheels suitable for the production line are designed by the design and the size calculation of the roll-sealing wheel groove curve. The research work completed in this paper has been applied to the actual production of the enterprise, and the expected effect has been obtained.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB486

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