枕形包装机横封器的性能研究

发布时间：2018-07-23 12:50

【摘要】：目前，包装机械总体上趋于高速、高效、高质量的发展，，横封技术作为枕形包装机的关键技术之一严重制约着枕形包装机的发展。横封器是横封技术具体的体现，横封器的质量影响着整个包装机的性能。 分析了目前常见横封器的结构功能特点，并且指出横封器存在的问题。往复式横封器横封速度慢、包装效率低；旋转式横封器横封时间不足、包装强度差，同时由于旋转式横封器的包装速度高，存在机构冲击、振动的问题。 旋转往复式横封器是一种新型的横封器，国内在相关方面的研究很少。旋转往复式横封器的运动轨迹是类似D形的曲线，D形的曲线的直线部分可以有效延长热封时间，改善热封质量。本文建立了旋转往复式横封器的运动学数学模型和运动控制程序，进行了运动学仿真分析。 机构运动精度是为影响机械产品质量、寿命和可靠性的重要因素，通过机构可靠性设计可以提高机构运动精度的可靠性。本文对旋转往复式横封机构可靠性灵敏度进行了研究，得到了不同机构参数对机构运动精度可靠性的影响，为机构的设计、制造提供了理论依据。 对于要求热封时间短的包装，旋转式横封器仍然具有很强的适用性。旋转式横封器是一种横封速度最高的横封器，机构的偏心质量在高速的情况下会产生了极大的惯性力。本文附加配重的方法对机构进行动力学平衡，建立了机构动力学平衡的优化模型。优化结果表明，机构的动力性能总体上有一定的提高。
[Abstract]:At present, packaging machinery is developing with high speed, high efficiency and high quality. As one of the key technologies of pillow packing machine, the development of pillow packing machine is seriously restricted. The horizontal seal is the concrete embodiment of the horizontal seal technology, the quality of the horizontal seal affects the performance of the whole packaging machine. The structural and functional characteristics of the common horizontal seals are analyzed, and the existing problems of the horizontal seals are pointed out. The speed of horizontal seal of reciprocating transverse seal is slow and the packing efficiency is low, and the time of transverse seal of rotary type is insufficient and the packaging strength is poor. At the same time, because of the high packing speed of rotary transverse seal, there are problems of mechanism shock and vibration. Rotary reciprocating transverse seal is a new type of horizontal seal. The moving track of the rotary reciprocating transverse seal is similar to that of the D shape curve and the straight line part of the D shape curve can effectively prolong the heat seal time and improve the heat seal quality. In this paper, the kinematics mathematical model and motion control program of the rotary reciprocating horizontal seal are established, and the kinematics simulation analysis is carried out. The kinematic accuracy of the mechanism is an important factor affecting the quality, life and reliability of mechanical products. The reliability of the mechanism can be improved by the reliability design of the mechanism. In this paper, the reliability sensitivity of rotary reciprocating transverse seal mechanism is studied, and the influence of different mechanism parameters on the kinematic accuracy reliability of the mechanism is obtained, which provides a theoretical basis for the design and manufacture of the mechanism. For the package with short heat sealing time, the rotary transverse seal still has a strong applicability. Rotary transverse seal is a kind of transverse seal with the highest speed. The eccentric mass of the mechanism will produce a great inertia force at high speed. In this paper, the dynamic equilibrium of the mechanism is carried out by the method of adding counterweight, and the optimization model of the dynamic equilibrium of the mechanism is established. The optimization results show that the dynamic performance of the mechanism is improved.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB486

【参考文献】

中国期刊全文数据库 前10条

1 邱显焱,孙晓;ADAMS及其在包装机械设计中的应用[J];包装工程;2004年05期

2 乔峰丽;苗鸿宾;;包装机横封机构仿真研究[J];包装工程;2008年01期

3 刘扬;贺兵;;枕式包装机横封机构平衡设计[J];包装工程;2008年12期

4 李光;;基于COSMOSMotion的包装机横封机构运动仿真[J];包装工程;2010年05期

5 唐焱;高速卧式枕型自动包装机横封机构的改进[J];包装与食品机械;2002年05期

6 梅林玉;卫军朝;邵云鹏;;ADAMS在包装机械设计中的应用研究[J];包装与食品机械;2008年03期

7 张有良;常晓煜;张国安;王剑峰;秦涛;;提高小颗粒物料枕形包立式包装机速度的研究[J];包装与食品机械;2010年04期

8 张有良;常晓煜;张国安;王剑峰;秦涛;;枕形包立式包装机制袋系统的设计探讨[J];包装与食品机械;2010年05期

9 戴宏民;戴佩燕;周均;;中国包装机械发展的成就及问题[J];包装学报;2012年01期

10 徐卫良;张启先;;空间机构运动误差的概率分析和蒙特卡罗模拟[J];南京工学院学报;1988年06期

中国博士学位论文全文数据库 前1条

1 周志刚;随机风作用下风力发电机齿轮传动系统动力学及动态可靠性研究[D];重庆大学;2012年

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