【作者】 魏延宏；

【导师】 杨萍；

【作者基本信息】 兰州理工大学 ， 机械工程， 2006， 硕士

【摘要】 注塑模模具设计的核心是模具型腔,即模具成型零件的设计,传统的注塑模设计主要依靠模具设计师的直觉和经验,需要进行大量的手工绘图,如果设计模型需要调整,则所有的设计图纸必须重新绘制,劳动强度大。模具通常要经过反复的调试和修正才能投入生产,模具的设计周期长,成本高,并且产品的质量不易保证。采用CAD和CAE技术设计开发模具,可以一次试模成功,缩短设计周期,降低成本。 本论文结合生产实际,设计开发了塑料编织机中滑动器零件的注塑模模具。根据滑动器零件尺寸设计出零件三维模型和模具的装配模型,通过分型面的设计最终完成模具的各个成型零件。利用Pro/E分析软件Plastic Advisor进行了模具注塑时的流动仿真,根据分析结果确定出浇注点,设计出注塑模的浇注系统。模具的冷却系统会影响到注射的时间和产品质量,本文分析了冷却系统的设计原则和常见的布置形式,并利用ADINA软件模拟了冷却系统对模具温度场分布的影响:冷却水管距型腔表面距离越小,型腔表面温度越低,温差越小;直径越大,温度越低,温差越大;冷却水管间距越小,温度越低,温差越大;冷却水流速越大,温度越低,温差越大。根据模拟结果,设计了模具的冷却系统。 为了检验滑动器模具成型零件设计的合理性,进行了充模仿真和开模仿真,仿真结果表明:模具成型零件形成的型腔注塑出的制件满足设计要求,成型零件能顺利开模,不会发生干涉。更多还原

【Abstract】 The core of mould injecting design is its cavity, namely, the designing of mould shaping parts, which traditionally depends on designers, intuition and experience and needs a lot of hand drawing. Suppose that the prototype needs readjusting, and then all the drawings must be drawn all over again, which often means hard work. As a result, Mould is always debug and corrected again and again before it can be used to produce products. Not only the mould design cycle is lengthening and the mould cost is high, but also the quality of the product can not be guaranteed The application of CAD and CAE technique to mould designing can ensure the design is implement successfully in one trail, it also shorten the period of mould design and lowered the product cost.Taking into consideration the practical purpose, the author of this paper adopts the injecting mould which is used in developing Pro/E software for sliding equipment of plastic knitting machine. Three dimension model of part and assemble model of mould were designed accord to size of sliding equipment, and every shaping part of mould were designed through design parting surface. The flowing simulation is done using plastic Advisor affiliated to Pro/E software and injection locations is determined and injection system is designed on the basis of the results from this analysis. As the cooling system is correlative to moulding time and quality of products, the ordinary laying forms and design are also introduced in the paper. Therefore, after using ADINA software to analyze the influence of cooling system on moulding temperature fields, the author points out that other conditions being equal, the less the pipe cavity distance is, the less its temperature difference and lower the surface temperature of the cavity will be. The greater the diameter of the pipe, the lower its temperature and greater the temperature difference is. The smaller the space between pipes is, the lower its temperature and thus smaller the temperature difference. The faster the cooling water flows, the higher the temperature and greater the temperature difference. The location and size of cooling pipes are calculated and distributed according to the emulation test and finally appropriate cooling system is brought forth.To determine the rationality of the designing of injecting mould for sliding equipment, moulding simulation and mold opening simulation are executed, the results of which indicate that the shaping cavity made from mould injecting design meets the demand of relevant requirements and shaping parts are easy to open and interference does not occur.更多还原