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介绍了香皂盒下壳体注射模设计过程.详细分析了香皂盒下壳注射成型工艺,利用Pro/E对塑料件的体积和质量进行了计算.对成型模具的结构、型腔数目和排列方式以及典型零部件等的设计进行了详细介绍.应用Pro/E进行注塑模快速设计提高了模具的一次试模成功率,提高了生产效率. 相似文献
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介绍了饮水机后盖注塑模设计过程。利用Pro∕E软件对塑料件进行了三维造型,整个模架设计都在Pro∕E的外挂模块EMX里完成,在EMX中可以加载标准件,同时可快捷地将3D图转化为2D图,为模具设计节省了大量时间,提高了设计效率。对注塑模结构、典型构件的设计进行了详细介绍,并介绍了注塑件的成型工艺。 相似文献
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注塑成型也称注射成型简称注塑,注塑成型工艺及模具设计是一门不断发展的综合科学,不仅随着高分子材料合成技术的提高、注塑成型设备的革新、成型工艺的成熟而改进,而且随着计算机技术、快速造型技术、数值模拟技术、数字化应用技术等在注塑成型加工领域的渗透而发展。本讲座内容主要包括:注塑模结构组成及分类、注塑件设计、注塑成型工艺、注塑机与注塑模的关系、注塑模设计、特种注塑模、注塑模CAD及其智能系统。 相似文献
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注塑成型也称注射成型简称注塑,注塑成型工艺及模具设计是一门不断发展的综合科学,不仅随着高分子材料合成技术的提高、注塑成型设备的革新、成型工艺的成熟而改进,而且随着计算机技术、快速造型技术、数值模拟技术、数字化应用技术等在注塑成型加工领域的渗透而发展。本讲座内容主要包括:注塑模结构组成及分类、注塑件设计、注塑成型工艺、注塑机与注塑模的关系、注塑模设计、特种注塑模、注塑模CAD及其智能系统。 相似文献
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注塑成型也称注射成型简称注塑,注塑成型工艺及模具设计是一门不断发展的综合科学,不仅随着高分子材料合成技术的提高、注塑成型设备的革新、成型工艺的成熟而改进,而且随着计算机技术、快速造型技术、数值模拟技术、数字化应用技术等在注塑成型加工领域的渗透而发展。本讲座内容主要包括:注塑模结构组成及分类、注塑件设计、注塑成型工艺、注塑机与注塑模的关系、注塑模设计、特种注塑模、注塑模CAD及其智能系统。 相似文献
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Scott Weir 《乙烯基与添加剂工艺杂志》1994,16(1):3-6
A common assumption in mold filling analysis is that the molding machine is capable of providing a fully pressurized uniform temperature melt to the rear orifice of the sprue. Based upon this assumption, the finite element model then only represents the geometry of the mold itself from the sprue rear orifice forward. This assumption, however, is acceptable only when the injection modeling machine nozzie extension is of such a length that the pressure drop in the nozzle is negligible. For large injection molded parts the exclusion of the molding machine nozzle in the design phase of the mold filling analysis may produce overly optimistic results. This study of an actual large (7.9 kg) injection molded thin wall (4 mm) vinyl part will show the effects of nozzle length on the accuracy of mold filling analysis software predictions. Analytical results with and without representation of the molding machine nozzle in the finite element model will be compared to production trial results. 相似文献
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以聚对苯二甲酸丁二醇酯/聚丙烯/30%玻璃纤维(PBT/PP/30%GF)塑料压头为例,分析了产品在模具设计上的难点,对产品材料、浇注系统、槽轮导向弧形抽芯结构、螺纹旋转脱模结构、丝筒针复合二次顶出结构等进行了设计,介绍了模具的整体结构和工作过程。结果表明,该模具无需外加抽芯动力装置,利用注塑机的开模力实现塑件弧形抽芯,解决了现有技术中弧形抽芯和螺纹脱模耗时、易拉伤塑件的问题,保证了弧形抽芯及薄壁内螺纹塑件的品质。 相似文献
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Although thermoplastic extrusion and injection molding have been extensively studied by a large number of authors, very little is known about the correlations between the extrusion and injection molding process variables. This paper describes the various comparable process variables between extrusion and injection molding of PVC dry blends. The Brabender extruder of 19 mm diameter and 25:1 length to diameter ratio and the Szekeley reciprocating single screw injection molding machine were used. PVC dry blends of industrial importance were prepared using a high speed mixer. The four mix formulations based on a commercial grade of PVC were used. Process variables studied during the injection molding were the melt temperature near the nozzle, injection pressure, injection speed, and energy consumption. Process variables studied during extrusion were the melt pressure at the die, power consumption, and the melt temperature at the die orifice. The correlations between the extrusion and injection molding process variables for PVC dry blends have been established. 相似文献
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根据塑料件的工艺要求,研究了计算机辅助设计方法在注射成型模具设计中的应用.论述了计算机辅助设计注塑模的流程和方法,主要包括运用Pro/E软件构造模具成型零件三维模型、运用EMX模块选取标准模架及标准零件、加载侧抽芯机构、设计推出机构以及运用MPI软件进行注射成型分析的过程和方法.重点论述了浇注系统设计的影响因素、浇口布局方案和冷却管道的优化设计. 相似文献