基于高速旋转式吹瓶机凸轮系统的优化研究

发布时间：2018-01-04 13:31

本文关键词：基于高速旋转式吹瓶机凸轮系统的优化研究　出处：《华南理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：PET塑料瓶价格便宜，透明性、气密性、耐压强度好而且易塑造型，在包装行业越来越被广泛使用，而PET旋转式吹瓶机具有速度高、效率高、成品率高等优点，而成了吹瓶机的主要发展方向。目前国内已经有多家公司开始从事旋转式吹瓶机的研发生产，其中包括东莞佳鸿机械有限公司、广州达意隆包装机械股份有限公司等都已经开发出热灌和水瓶的不同工位的旋转式吹瓶机。但由于相关技术及研发水平的差别，国内旋转式吹瓶机在稳定性和单模产量上都不高，而旋转式吹瓶机中的开合模凸轮系统和两个手指盘凸轮系统对机器稳定性和单模产量起到直接作用，本文就对这几个凸轮系统整体优化展开研究。本论文首先就高速场合下凸轮系统运动规律及高速凸轮优化方法进行研究，分析对比用于高速场合下的凸轮机构从动件运动规律，并将最优化设计理论引用到高速凸轮系统的研究。其次，本文对旋转式吹瓶机中开合模凸轮系统进行机构原理分析，然后利用矢量分析法研究了开合模凸轮系统的解析方法，推导出开合模凸轮与模具开合角度数学关系，并分别通过Auto-CAD和Pro/Engineer实现了解析法的凸轮轮廓曲线的生成；论文还对两个手指盘凸轮轮廓曲线进行研究，详细讨论研究了轮廓曲线不同段的设计要求，并利用样条插值法对手指盘凸轮轮廓曲线过渡部分的构造，然后参照曲率使用贝齐尔曲线法对构造的曲线进行优化调整。最后，论文就开合模凸轮与手指盘凸轮关系进行研究，并通过Pro/Engineer的运动学仿真模块来构造凸轮盘机构的仿真模型，并进行运动学仿真，对比速度加速度，选择最适合的开合模凸轮参数。旨在通过本文的研究，从旋转式吹瓶机各个凸轮系统整体及其之间的关系出发进行优化设计各凸轮轮廓曲线，从而提高旋转式吹瓶机的平稳性和单模产量。本论文最终通过上述研究优化得出三个凸轮系统的凸轮轮廓曲线，并应用于高速旋转式吹瓶机上，在保持机器平稳运转的基础上，，单模产量由原来的1500BPH提高到1800BPH，对高速旋转式吹瓶机凸轮系统的设计有一定的实际意义。
[Abstract]:PET plastic bottle price is cheap, transparent, airtight, good pressure strength and easy to shape, more and more widely used in the packaging industry, and PET rotary bottle blowing machine with high speed, high efficiency. The high product rate has become the main development direction of the bottle blowing machine. At present, many domestic companies have begun to engage in the research and production of rotary bottle blowing machine, including Dongguan Jiahong Machinery Co., Ltd. Guangzhou Dayilong Packaging Machinery Co., Ltd. has developed the hot irrigation and water bottle of different work station rotary blowing machine. But due to the related technology and R & D level differences. Domestic rotary bottle blowing machine is not high in stability and single mode production, but the open and close cam system and two finger disc cam system in rotary bottle blowing machine play a direct role in machine stability and single mode output. In this paper, the overall optimization of these cam systems is studied. In this paper, the motion law of cam system and the optimization method of high-speed cam are studied firstly, and the motion law of follower of cam mechanism used in high-speed situation is analyzed and compared. And the optimization design theory is applied to the research of high-speed cam system. Secondly, the mechanism principle of open and close cam system in rotary bottle blowing machine is analyzed in this paper. Then, the analytical method of open and close cam system is studied by vector analysis method, and the mathematical relationship between open and close cam and opening and closing angle of die is deduced. The cam contour curve is generated by Auto-CAD and Pro/Engineer, respectively. The paper also studies the contour curve of two finger disc cam, discusses the design requirements of different segments of the profile curve in detail, and constructs the transition part of the cam contour curve using spline interpolation method. Then the curve is optimized and adjusted by the method of Bezier curve according to the curvature. Finally, the relationship between the open and close cam and the finger cam is studied in this paper. The simulation model of cam disk mechanism is constructed by the kinematics simulation module of Pro/Engineer, and the kinematics simulation is carried out, and the velocity acceleration is compared. The purpose of this paper is to optimize the design of cam contour curves from the angle of the whole cam system of rotary bottle blowing machine and the relationship between the cam system and the cam system. In order to improve the stability of rotary bottle blowing machine and single mode output. Finally, the cam contour curves of three cam systems are obtained through the above research, and applied to the high-speed rotary bottle blowing machine, on the basis of maintaining the smooth operation of the machine. The output of single mold is increased from 1500 BPH to 1800 BPH, which is of practical significance to the design of cam system of high speed rotary bottle blowing machine.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH112.2

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