基于Pro/E的食品加工容器成型模具设计

介绍了食品加工容器注射模的设计过程及模具开模仿真的具体过程,着重讲述制品的成型工艺分析;利用PRO/E自带的模型分析功能,对制品进行注射成型分析,并最终设计出该制品的模具,体现了PRO/E软件在模具设计中的优越性。     

电器盖注射模设计

以电器盖注射模具设计为主线,研究了成型工艺、模具结构设计、模具零件的加工方法及模具的总装配等。介绍了一种电器盖注射模具,该模具采用一模两腔,即一次成型2个壳件的组合,同时,简单介绍了镶件的加工工艺。     

基于Pro/E的扣板模具设计与制造

文章叙述了扣板塑件的注射成型工艺分析,扣板模具的Pro/E模具设计、模具的虚拟装配干涉检测,模具零件加工工艺分析,复杂模具零件的数控加工程序的自动生成、加工仿真等。     

模具先进制造技术在塑料成型模具设计方法中的应用研究

以塑料电器壳体为例,论述了基于Moldex 3D模流分析CAE的塑料注射成型模具设计方法。针对该薄壳类塑料制品的塑料注射成型加工工艺进行了研究,包括零件电器壳体用ABS树脂材料性能分析、聚碳酸酯（PC）材料性能分析、零件的塑料注射成型工艺过程分析、针对该薄壳类塑料制品的侧向分型注射成型模具的设计与制造研究及相关技术图样资料分析等。     

新型调心滚子轴承塑料保持架的注射成型

注射成型是塑料加工中的重要方法之一，用ＧＲ－ＰＡ６６为材料，从料筒温度，注射压力和模具温度三方面进行工艺试验，得出了在成型周期为２５ｓ，模具７０－１００℃，料筒前段温度２７０－１００ＭＰａ的工艺条件下，塑料保持架有较高的力学性能的结论。附表２个。     

风扇上盖注射模具设计及高速铣削加工

高速铣削加工具有很多优点,被广泛应用在模具产品的数控加工中。使用高速加工技术,需要有满足高速加工的加工中心,适合进行高速加工的刀具,更为重要的是选择合理的加工策略。以风扇上盖产品注射模具的设计过程为例,在分析塑料成型工艺和产品结构特点的基础上,基于UG NX 4.0的Mold Wizard 模块,对注射模具的设计过程进行了详细的阐述。应用Mold Wizard 模块进行注射模具设计,可以有效保证注射模具设计的准确性,降低了产品开发和模具设计成本,大大缩短了模具设计与制造的周期,提高了生产效率。     

基于Moldflow的双色注塑工艺分析

双色注塑成型较普通注塑成型工艺过程和模具加工更加复杂,需多次试模、修模,制造周期长。针对上述问题,以游戏手柄为例运用数值软件Moldflow对双色注塑成型进行仿真,通过对填充时间、剪切速率、注射位置压力和熔接痕缺陷的分析,为评估工艺合理性和优化模具结构提供理论依据,对双色注塑模具制造技术的发展具有一定参考价值。     

超高速注射成型及模具技术

介绍了超高速注射成型技术的特点和应用，指出了超高速注射成型模具与普通注射成型模具的差异，重点阐述了超高速注射成型模具排气系统的设计，并给出了设计工艺参数。     

高光注射成型技术的发展及应用

介绍了高光注射成型技术的工艺过程,深入分析了高光注射的主要特点,比较高光注射成型与普通注射成型的主要区别,分析了高光注射成型模具的特点,最后指出了高光注射成型技术的应用范围与前景,并指出了水辅注射成型技术今后有待解决的几个关键性问题.     

离合器壳体切边冲孔模具设计及其凸凹模加工工艺

分析了零件的成型工艺,确定了冲压工艺流程,介绍了模具结构、工作过程和模具工作零件设计以及加工工艺。生产实践证明：离合器壳体加工工艺合理,模具结构紧凑,产品质量良好,满足生产要求。     

薄壁塑件注塑成形特性的试验研究

设计制造了一可成形薄壁塑件的模具,利用正交试验方法(田口方法)进行充模试验,研究各工艺参数(注射速度、注射压力、熔体温度、注射量和模具温度等)对薄壁塑件注塑成形充模过程的影响。研究结果表明:模具温度对薄壁塑件的填充起决定性作用,注射压力和注射量是影响薄壁塑件成形的重要工艺参数,注射速度与熔体温度之间的交互作用对薄壁塑件成形的影响显著。     

高相对密度钨球注射成形过程中的喷射现象

针对金属粉末注射成形过程中喷射所引起的气穴、不良流动等缺陷,对高相对密度钨球合金制品进行了注射成形试验,发现钨球注射成形初期存在喷射现象,喂料一进入型腔即发生剧烈扭曲变形。通过多种成形工艺参数的组合,并且根据非牛顿流体的剪切变稀特性,采用高速高压成形工艺使得注射过程在瞬间完成,从而消除喷射对金属粉末制品的影响。同时,采用Moldflow MPI软件对其成形过程进行仿真,结果表明基于欧拉法的传统模流仿真软件无法模拟喷射现象,从而提出采用拉格朗日法对喷射成形过程进行建模和仿真的构想。将上述喷射现象的研究结果与高相对密度钨球的实际生产现状相结合,提出在定模板的模具分形面一侧开排气道增强其排气能力,和采用高速高压注射成形工艺解决喷射所造成的质量问题。     

A nondestructive online method for monitoring the injection molding process by collecting and analyzing machine running data

Nondestructive online monitoring of injection molding processes is of great importance. However, almost all prior research has focused on monitoring polymers in molds and damaging the molds. Injection molding machines are the most important type of equipment for producing polymeric products, and abundant information about actual polymer processing conditions can be obtained from data collected from operating machines. In this paper, we propose a nondestructive online method for monitoring injection molding processes by collecting and analyzing signals from injection molding machines. Electrical sensors installed in the injection molding machine, not in the mold, are used to collect physical signals. A multimedia timer technique and a multithread method are adopted for real-time large-capacity data collection. An algorithm automatically identifies the different stages of the molding process for signal analysis. Moreover, ultrasonic monitoring technology is integrated to measure the cavity pressures. Experimental results show that our nondestructive method can continuously monitor the injection molding process in real time and automatically identify the different stages of the molding process. The packing parameters, including the filling-to-packing switchover point and the packing time, can be optimized based on these data. Furthermore, the ultrasonic reflection coefficient and the actual cavity pressure have similar trends, and our technique for measuring the cavity pressure is accurate and effective.     

基于Moldflow的魔方中心轴注射分析与优化设计

应用Moldflow软件对魔方中心轴的注射成型过程进行浇口位置、充填、冷却和翘曲等模拟分析。通过在不同注射工艺条件下进行对比分析,确定了注射的最佳工艺参数:充填时间为2 s,注射+冷却时间为8 s,模具温度为40℃,熔体温度为240℃,注射压力为100 MPa。应用UG软件建立了注射模具的实体模型,解决了传统注射模具设计方法存在设计周期长、成本高且质量难以保证等问题。     

轿车后视镜外罩注射模具的设计与数控加工

通过对轿车后视镜外罩塑件的结构和工艺分析,介绍了该注射模结构的设计及模具的工作过程,详细讲述了模具的热流道系统、抽芯机构的设计。最后利用Mastercam X软件,完成了模具零件的计算机辅助加工工艺及数控程序设计。     

基于Taguchi试验设计的储箱箱盖注射工艺参数研究

注射成型受众多因素影响,在制件结构和模具结构确定的条件下,通过合理的注射工艺参数,可消除或减少塑件成型中出现的缺陷。针对某企业在试生产一种储物箱箱盖时产生翘曲变形的问题,采用Taguchi试验方法,应用Moldflow对注射过程进行模拟,获得了塑件在熔料温度、模具温度、注射时间和保压压力四因素三水平下成型的翘曲变形量。采用极差分析,比较了不同工艺参数对翘曲变形量的影响程度,得到了优化的工艺参数组合。经试验验证,其效果良好,产品的翘曲变形得到了一定的改善。     

Integrated simulation of the injection molding process with stereolithography molds

Functional parts are needed for design verification testing, field trials, customer evaluation, and production planning. By eliminating multiple steps, the creation of the injection mold directly by a rapid prototyping (RP) process holds the best promise of reducing the time and cost needed to mold low-volume quantities of parts. The potential of this integration of injection molding with RP has been demonstrated many times. What is missing is the fundamental understanding of how the modifications to the mold material and RP manufacturing process impact both the mold design and the injection molding process. In addition, numerical simulation techniques have now become helpful tools of mold designers and process engineers for traditional injection molding. But all current simulation packages for conventional injection molding are no longer applicable to this new type of injection molds, mainly because the property of the mold material changes greatly. In this paper, an integrated approach to accomplish a numerical simulation of injection molding into rapid-prototyped molds is established and a corresponding simulation system is developed. Comparisons with experimental results are employed for verification, which show that the present scheme is well suited to handle RP fabricated stereolithography (SL) molds.     

Study of injection molding process simulation and mold design of automotive back door panel

Numerical simulation of the injection molding process of the outer panel of the automotive plastic rear door and mold design is presented here. Computer aided three-dimensional interactive application (CATIA) is employed to design the original automotive steel structure, and the modal and thermodynamic properties of the plastic back door outer panel are changed by changing the different injection materials of the back door outer panel. In order to efficiently design the panels, finite element analysis is used to verify whether the designed parts meet the mechanical properties requirements such as light weight, low fuel consumption, short production cycle, strong modeling design, high corrosion resistance and good recovery, the above main parameters have been evaluated, and the above main parameters are carried out evaluate. To simulate the injection molding process, computer aided engineering (CAE) software such as ANSYS and HyperWorks are used to analyze the back door of the selected material. After the numerical analysis, suitable material is selected, so that the modal and thermodynamic properties of the product could be satisfied as well as improved. Unigraphics NX (UG) is employed to design the convex and concave mold for the injection molding of the automobile’s plastic back door panel. Combined with the characteristics of the parts and the design requirements of the injection mold, the multi-scheme design of the pouring and cooling system is carried out. By comparing the effects of different gating and cooling systems on injection molding, the best gating and cooling system is selected. The artificial fish swarm algorithm is used to optimize the process parameters of the injection molding process, and the best combination of the injection molding process parameters of the outer panel of the rear door of the automobile is obtained.

     

水壶手柄注塑件的模具设计与加工

分析了某款水壶的手柄和壶口一体注塑件的外形和结构,针对加工及出模难点,合理地安排了加工工艺并设计了嵌入式顶针的模芯,该模芯兼有滑块和顶针的双重功能,很好地解决了生产中的难题。