【作者】 余豪；

【导师】 杨家军；

【作者基本信息】 华中科技大学 ， 机械设计及理论， 2018， 硕士

【摘要】 玻璃制品拥有着适用范围广、绿色环保美观的特性,因此其需求量不断增加,而国内现有的制瓶机设备并不能很好的满足需求。本论文针对行列式制瓶机的流料系统关键技术进行研究,力求实现制瓶机高效率生产、料滴质量高精度控制。本文首先分析现有的制瓶机流料系统现状,通过简易计算指出现有玻璃料滴加速技术存在的问题,然后以无叶风扇为灵感,基于射流原理设计了料滴加速装置,实现了在不接触、不改变料滴形状的条件下,有效的提高了料滴下落速度,从而减少下落时间实现提高效率的目的。应用ANSYS的CFX模块对加速装置流场的流线、速度、压力分布等进行了分析,解决了加速区不足、扰动回流等问题。应用空气动力学相关知识计算了料滴在设定条件下的速度,与未经加速装置的料滴速度对比,初步验证了加速装置的有效性。同时应用机器视觉技术,在不接触料滴的情况下实现形状、质量的实时控制,解决了传统料滴控制困难的问题。建立了料滴视觉系统,包括料滴图像的采集以及处理,获取料滴轮廓以及计算质量,并通过初步试验验证了料滴图像处理算法的合理性。通过多组实验仿真,依据CFX的后处理功能提取数据,绘制了进风口气压或出风口角度、轴线位置、流场速度三者之间的关系曲线,可以直观的看到三者的联系以及变化趋势,并提出了一种调整出风口角度的机械结构。最后,对高效高精制瓶机流料系统的实现做了总述。更多还原

【Abstract】 Glass products have the characteristics of being a wide range of applications,green and beautiful,and their demand is constantly increasing.However,the current domestic bottle machine equipment does not meet the demand well.Therefore,this paper aims at The key technologies of the flow material system of the bottle-type bottle machine are studied to achieve high-efficiency production and high-precision control.This paper firstly analyzes the status quo of the existing bottle-making machine flow material system,points out the irrationality of the current glass material droplet acceleration through simple calculations,and then uses the leafless fan as the inspiration,and designs a droplet acceleration device based on the principle of jet flow.Without touching or changing the shape of the glass drop,the dropping speed of the glass drop is effectively improved.The ANSYS CFX module was used to analyze the streamline,velocity,and pressure of the accelerating device on the flow field,which solved the problems of insufficient acceleration area and backflow.The aerodynamic knowledge was used to calculate the droplet speed under the set conditions.Compared with the droplet velocity of the unaccelerated device,the effectiveness of the acceleration device was preliminarily verified.Machine vision technology is used to achieve real-time control of non-contact shape and quality of glass drop drops,which solves the problem of traditional glass drop control difficulties.The glass drop visual system was established,including image acquisition and image processing,and the droplet outline and calculation quality were obtained.The rationality of the droplet image processing algorithm was verified through preliminary experiments.Through multiple sets of experimental simulation,according to the CFX’spost-processing function to extract data,the relationship curve between the inlet air pressure or outlet angle,axis position,and flow velocity is drawn,and the three links can be intuitively seen and changed.Trends,and proposed a mechanical structure to adjust the outlet angle.Finally,an overview of the realization of a high-efficiency,high-purity bottle machine flow feeding system was made.更多还原