热熔胶自动装盒机关键部件的设计与研究

发布时间：2018-06-20 12:20

本文选题：自动装盒机 + 取盒-开盒装置　；参考：《广东工业大学》2014年硕士论文

【摘要】：自动装盒机广泛应用于食品、医药、化工、日用品、电子产品等行业生产中。目前我国制造的自动装盒机大多数是在对国外产品进行测绘和仿制的基础上开发的,在质量、适应性、运行可靠性、工作效率等方面与国外同类产品相比仍然有较大差距。因此,有必要开发出具有更高综合性能的国产自动装盒机。本论文基于产学研合作项目“装盒机推料机构设计优化”,旨在设计一种热熔胶式自动装盒机,主要完成了以下工作：首先,本文介绍了装盒机的工作原理和工艺流程,讨论了自动装盒机的国内外发展现状、指出了国产自动装盒机存在的问题,并在此基础上提出了自动装盒机的总体设计方案。其次,结合企业的实际生产情况,对自动装盒机的取盒-开盒装置提出了总体要求,并依据主要的设计参数,对纸盒的料仓进行了结构形式的选择、整体的方案设计以及关键部位的设计计算；分析了取盒-开盒机构的工作原理,对机构的尺寸进行了设计计算；对取盒-开盒机构的执行元件——真空吸盘进行了吸取力的计算,确定了吸盘的直径大小和型号。再次,对比分析了原有推料机构的利弊,提出采用串联式凸轮连杆机构作为新的推料机构方案；根据自动装盒机推料滑块机构的运动规律,依托SolidWorks Motion运动学仿真软件,运用运动学逆向求解出凸轮的轮廓曲线,将得到的凸轮进行实时运动学仿真,得到了滑块的运动特性曲线,验证了所求凸轮轮廓的准确性；对凸轮副进行了接触力的计算与强度校核,进一步说明了推料机构设计的合理性。接着根据纸盒的一般封盒流程,对自动装盒机的封盒装置提出了设计方案,并对该装置的主要零部件进行了设计与动作分析。然后,基于有限元分析软件对自动装盒机机架结构进行了静力学分析和拓扑形状优化设计,表明了通过传统经验或者类比法设计的机架结构满足强度要求且具有较大的优化裕量。接着以有限元分析的结果为基础,综合考虑制造工艺的简便性,确定了机架结构的优化设计方案,并校核了优化后机架结构的强度和刚度。通过对机架结构的改进,使得机架的质量减少了20.5%,经济效益显著。最后,根据模块功能划分的原则和方法,对自动装盒机进行了模块划分与创建,并对自动装盒机进行了整机的虚拟装配和验证。本文设计的取盒-开盒装置、推料机构、封盒装置、机架等都已经应用于企业的实际生产中,并取得了预期的效果。
[Abstract]:Automatic packaging machine is widely used in food, medicine, chemical, daily necessities, electronic products and other industries. At present, most of the automatic packing machines made in our country are developed on the basis of mapping and imitation of foreign products. There is still a big gap in quality, adaptability, operation reliability, work efficiency and so on. Therefore, it is necessary to develop a domestic automatic packing machine with higher comprehensive performance. This paper is based on the cooperation project of industry, university and research, "the design optimization of the pushing mechanism of the box loader", aiming to design a hot melt adhesive type automatic packing machine. The main work is as follows: first, This paper introduces the working principle and technological process of the box loading machine, discusses the development status of the automatic packing machine at home and abroad, points out the problems existing in the domestic automatic packing machine, and puts forward the overall design scheme of the automatic packing machine on this basis. Secondly, combined with the actual production situation of the enterprise, the paper puts forward the overall requirements for the box take-open device of the automatic box loader, and according to the main design parameters, the paper selects the structural form of the carton bin. The whole scheme design and the design calculation of the key position are analyzed, the working principle of the box take-open box mechanism is analyzed, and the size of the mechanism is designed and calculated. The suction force of the vacuum sucker, the executive element of the box-open box mechanism, is calculated, and the diameter and type of the sucker are determined. Thirdly, the advantages and disadvantages of the original pushing mechanism are compared and analyzed, and the series cam linkage mechanism is proposed as the new scheme of the pushing mechanism; according to the motion rule of the sliding block mechanism of the automatic box loader, the kinematics simulation software SolidWorks Motion is used. The contour curve of cam is solved by inverse kinematics, and the kinematics simulation of cam is carried out in real time, the characteristic curve of slider is obtained, and the accuracy of cam contour is verified. The contact force and strength of the cam pair are calculated and verified, and the rationality of the design of the pushing mechanism is further explained. Then, according to the general sealing flow of carton, the paper puts forward the design scheme of the sealing device of the automatic packing machine, and designs and analyzes the main parts of the device. Then, based on the finite element analysis software, the statics analysis and topological shape optimization design of the frame structure of the automatic packing machine are carried out. The results show that the frame structure designed by the traditional experience or analogy method can meet the strength requirement and has a large optimum margin. Then based on the results of finite element analysis and considering the simplicity of manufacturing process, the optimum design scheme of frame structure is determined, and the strength and stiffness of the optimized frame structure are checked. Through the improvement of the frame structure, the quality of the rack is reduced by 20.5.The economic benefit is remarkable. Finally, according to the principle and method of module function division, the module partition and creation of automatic packing machine are carried out, and the virtual assembly and verification of the whole machine are carried out. The box-open device, pushing mechanism, sealing device and frame have been used in the actual production of the enterprise, and the expected results have 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】：2014
【分类号】：TB486

【引证文献】