注塑模具-注射模具毕业课程设计外文文献翻译、中英文翻译

English translation in injection moldAbstract: According to the requirements of the plastic products, understand the use of plastic parts, technical requirements, analysis of dimensional accuracy and other technical considerations of plastic parts, plastic parts size. We used a mold two cavity, the side gate, injection machine uses the Haitian 110X 1A models, equipped with a cooling system, CAD and UG drawing two-dimensional assembly drawing and parts drawing, choose the reasonable processing method of mould. Attach a statement, the systematic use of a brief text, analysis and calculation of plastic parts and concise, so as to make reasonable mold design.Key Words：Mechanical design;mold design;CADUG to draw the3Ddrawing two-dimensional map.1、IntroductionMany types of mold, the structure and varieties of plastic, plastic injection molding machine and the complexity of the types and other factors, its basic structure is composed of the movable mould and the fixed mould is composed of two parts. The fixed mould part arranged on the fixing plate of the machine, dynamic part is installed in the mobile injection molding machine, in the injection molding process with the clamping system of injection molding machines movement. Part of mold and die part guided by a guide post and a closed dynamic injection molding. General injection molding parts, the clamping mechanism, gating system, side parting and core pulling mechanism, pushing mechanism, a heating and cooling system, exhaust system and the supporting parts.At present, the mould manufacturing technology in China has been from the past can only make simple mold to mold can produce large, sophisticated, complex, long life. In the plastic mold design and manufacturing, to bumper and the whole panel of large injection mold. With the rapid development of computer technology, the mold design and manufacturing technology is moving in the direction of the development of digital. On the one hand, the domestic market will continue to mold growth; on the other hand, mold manufacturing is gradually transferred to China and the multinational corporations to Chinas purchases tend to die is also very obvious. Chinas economy is still in a stage of rapid development, the international development trend of economic globalization is increasingly obvious, which provides good conditions and opportunities for the rapid development of mold industry in our country.2、 Mold-Filling Simulation2.1 Calculation of the interface locationsThe mold filling velocity and the shape of the melt front in LFC are quite different from those in the conventional empty mold castingThe velocity at the melt front is restricted by the foam degradation，gas elimination，pressure building-up in the mold，etc，and 1t is affected by the original process parameters，such as the vacuum degree，the pattern density and the metallic static head The meltpattern interface develops in a radiate mannerDue to the foam degradation caused by the heat transfer between the molten metal and the foam pattern in LFCThe influence of the gravity on the mold filling velocity and the interface morphology in LFC is minor compared with that in the conventional empty mold gravity casting5 7 According to the mechanism of the melt frontmovement during the mold filling process of LFCthe artificial neural network technique is proposed to calculate the locations of the meltpattern interfaceThe whole casting(including the gating and feeding system) is meshed into the cubic cells of appropriate sizeEach cell is regarded as a neuron and can be in one of three states during the mold filling, empty, interfacial or ful1. A neural network is formed through the interconnecting links between the cells，in which each cell is connected only to its neighboring cells and has no connections to the othersThe architecture of the network is similar to the cellular neural network(CNN)in the way of cell connecting，I,E, with locally interconnectinglinkage and pre-designed link values(weights)According to the mode of linkage，each cell except for the cell located at the boundary of the casting is connected to its 26 neighboring cellsLet C(i，j，k)denote a cell and Nr(i，j, k)the aggregation of ceils connected to C(i，j，k)，then：From the initial time t0，each cell of the network changes its state of activation at the end of every time interval t according to its activation function an d produces an output value of 1 or 0For a time intervaleach cell accepts the outputs from the 26 neighboring cells as its inputUsing a 26-dimeusional vector to denote the input of C(i，j ，k)，the components of the vector are：in which， is the output of C(l，m，n)and represents the distance of interface movement from C(l，m，n)to the un-filled cell C(i，j，k)in the time interval of At with unit velocityThe summed input of the un-filled cell c(i，J，k)is：where， is the input function and represents the 26_dimensional weight vectorEach component of the weight vector is set according to the velocities of the neighboring cell and their relative of nationsthat is：where， denotes the relative orientation to the neighboring cells，and ， is the evaporating velocity of the foam pattern at the corresponding locationFrom the related experimental study it has been found that is determined by the process parameters of the metallic static head h，the vacuum degree ，the pattern density d，the pouring temperature and the factor of coating property For this specially designed network，the operation 0f the input function is to calculate the relative interface moving distances from the neighboring cells to cell C(i,j,k).The detailed calculation process is as follows:(1)By multiplying the corresponding components of the input vector and weight vector，a new 26-dimensional vector is obtained，and the accumulation of the components of the new vector with time is：And ，when C(i，J，k )is empty(2)By summing the two components of vector ，m，along which the filling directions confront with each other，a 13-dimensional vector is obtained： Let then，the states of activation of the cells are defined as:when ，k=0，C(i，j，k )is an empty cell；when ，j， 0，C(i，j，k )is a full cell；when ， 0，C(i，j，k)is an interface cel1The output of the neuron is a threshold function：where is the threshold value of the neuron and it equals tothe side length of the meshed cel1 Fig1 Flow chart of LFC mold filling solution procedureThe algorithm was realized by C+ computing language，as its computation flow chart shown in Fig1、At the beginning of the calculationThe cells in the top layer of the meshed sprue of casting were set to be fu11 (if the sprue was hollow，all the cells between the top layer of sprue and the ingate were set to be ful1)According to the calculation process，all the cells would be full after filling for a certain time, and the system would be stable.2.2 Calculation on the fluid flow and temperature distribution during mold fillingAccording to the above solution algorithm，the locations of meltpattern interface at any moment are obtained So the fluid flow and the temperature distribution during the mold filling can be calculated by solving the NS equation and the energy equation within the known computational domainThe governing equations are expressed as the followinggeneral form ：where is a dependent variable，represents the diffusion coefficient and S is the source termThe equation represents the continuity equation，the NS equation or the energy equation，when the dependent variable is 1，uj, or T，respectivelyFor a certain ，there are corresponding and SSOLA technique was applied to calculate the fluid flow in the NS equationThe velocity boundary condition at the meltpattern interface in LFC is different from that at the free surface in the conventional empty mold castingIn the lost foam casting ，the melt front velocity is restricted by the evaporating velocity of the foam patternSo the melt front velocity could be set as the evaporating velocity of the foam pattern，and the direction is determined according to the relative orientation between the molten metal and the foam patternFor a full cell C(i，j，k )，for example，if the output value， is 0，then the boundary velocity can be set as : The temperature boundary condition at the melt front in LFC is also quite different from that in the conventional empty mold castingIn the lost foam casting，the melt front is remarkably chilled due to the evaporation an d the decomposition of the foam patternGenerally ,so me researchers used an equivalent heat transfer coefficient to deal with the chilling effect In this paper ,the boundary condition is treated by giving the relationship between the heat flow an d the time at the interface3、Check the stiffness and strength of dieDie strength of common sense in mold strength, stiffness. Requirements of various molding parts and components have the strength, the stiffness of the die, enough strength can ensure mold can work normally.Because the mold form is more, the calculation is different and more complex, in actual production, using the method of experience design and strength check of the combination of the strength check, adjust the design, to ensure the normal work of the mould can be.Die strength calculation is relatively complex, generally use the simplified calculation method, to take a conservative approach, the calculation principle is: select the most unfavorable loading structure, selection of safety coefficient, and then optimizing the structure of the mold, improve the mold strength. In order to ensure that the mold can work normally, the overall strength is not only to check the mold, to check the strength of the local structure of die.The overall strength of the main for the cavity wall thickness, cavity thickness of base plate, several pressure mold surface can bear, the actual choice of size should be larger than the size and integral calculation. Check the strength and bending from the two aspects of calculation, select a larger size.4、Design and calculation of cooling systemMold temperature have influence on the mold filling of plastic melt flow, solidification, the production efficiency and the products shape and size precision, for any plastic products, mold temperature fluctuation is negative. The mold temperature is too high will make the plastic deformation occurs in the release, to extend the cooling time and make the productivity decline. Mold temperature too low will reduce the flow of plastic, making it difficult to filling, increased stress products and obvious weld marks. Due to the requirements of performance and process all kinds of plastic, the mold temperature requirements are not the same. Plastic powder injection to the general mold temperature, melt solidified into the plastic parts, reduce the mold, mold temperature from the left and right are dependent on the cooling water inlet in the mold, the heat away. For the requirement of low temperature (less than) plastic, only need to set up the cooling system can be, because can be adjusted by the flow of water to adjust the mould temperature5、ConclusionsThe mold design project, through the analysis of plastic parts of the process, determine the overall design of the mold, and the design of each subsystem. The design of the mould can meet the quality requirements of the working state, the use of safe and reliable, easy to repair, a molding cycle is short in injection molding, forming a long service life, reasonable mould manufacturing process.Through the above work, I on a mold from design to the whole process of knowledge are clear and intuitive, understanding the working principle of injection mold, with the experience and knowledge will determine the design and accuracy of the main parts of the die cavity and so on, can be a reasonable solution to the problems in the design of the mould often appear the proposed, to select the injection molding machine, mold, determine the structure and size of the cavity number, the choice of parting surface, gating system design, core pulling mechanism etc. Due to the lack of knowledge and experience, in the design process to determine the machining accuracy of parts, there are still many shortcomings, still need to be improved in the future work, study.References1 Chen Xiaokang, Zhou Xinglong. Practical Mould Technology Handbook M. Beijing: China Light Industry Press, 20012 Peng Jiansheng. Mold design and Processing Handbook M. Beijing: Mechanical Industry Press, 20053 Shen Kai Chi. Plastic mould M. Beijing: China Light Industry Press, 20024 Liu Shouyong machinery manufacturing technology and machine tool fixture M. Beijing: Mechanical Industry Press, 20005 Zhang Zheng. Die manufacturing technology M. Beijing: Publishing House of electronics industry, 20026 Ding Wen. The utility of plastic mold design manual M. Xian: Xian Jiao Tong University press, 19937 Li Zhigang, Xia Ju Chen. China Mold Design Canon M. China society of mechanical engineering, 20038 pan Baoquan. Die manufacturing technology M. Beijing: Mechanical Industry Press, 20049 Wang Boping, interchangeability and measurement technology M. Beijing: Mechanical Industry Press, 200210 Li Yimin. Mechanical manufacturing process design handbook M. Beijing: Mechanical Industry Press, 199311 Li Yuncheng. Die manufacturing technology M. Beijing: Mechanical Industry Press, 200212 Huang Chengju, Li Eqin. Reverse engineering project training tutorial M. Beijing: Publishing House of electronics industry, 200413 Liu Yanguo, Yan Huiping. The quantity of injection molding cavity of the selection of J. electromachining & mould, 200614 Wilson, F.W.Die Design Handbook MaGraw Hill 1990.615 Q.C.Li, Z.Huang.Mobility Analysis of a novel 3-5R Parallel Mechanism Family.DOI: 10.1115/1.1637651注塑模中英文翻译摘要：根据塑料制品的要求，了解塑件的用途，分析塑件的工艺性、尺寸精度等技术要求，考量塑件制件尺寸。本模具采用一模两腔，侧浇口进料，注射机采用海天110X 1A型号，设置冷却系统，CAD和UG绘制二维总装图和零件图，选择模具合理的加工方法。附上说明书，系统地运用简要的文字，简明的示意图和和计算等分析塑件，从而作出合理的模具设计。关键词：机械设计；模具设计；CAD绘制二维图；UG绘制3D图。1 、介绍注塑模的种类很多，其结构与塑料品种、塑件的复杂程度和注塑机的种类等很多因素有关，其基本结构都是由动模和定模两大部分组成的。定模部分安装在注塑机的固定板上，动模部分安装在注塑机的移动模板上，在注射成型过程中它随注塑机上的合模系统运动。注塑成型时动模部分与定模部分由导柱导向而闭合。一般注塑模由成型零部件、合模导向机构、浇注系统、侧向分型与抽芯机构、推出机构、加热和冷却系统、排气系统及支承零部件组成。目前，我国的模具制造技术已从过去只能制造简单模具发展到可以制造大型、精密、复杂、长寿命的模具。在塑料模具方面，能设计制造汽车保险杠及整体仪表盘大型注塑模。随着计算机技术的发展应用，模具设计与制造技术正朝着数字化方向发展。一方面，国内模具市场将继续高速发展；另一方面，模具制造也逐渐向我国转移以及跨国集团到我国进行模具采购趋向也十分明显。我国经济仍处于高速发展阶段，国际上经济全球化发展趋势日趋明显，这为我国模具工业高速发展提供了良好的条件和机遇。2、模具充模仿真2.1界面定位的计算在消失模铸造中, 模具充模的速度和熔化前面的形状与传统空模铸造是十分不同的.在模具中, 熔化前面的速率受到泡抹降解,天然气挥发和应力集中等等的限制。它还受到源工艺参数的影响,例如真空度,模型密度和金属的静止端,熔化模式的界面是按放射模式展开的。在消失模铸造中，由于泡沫降解导致热量在熔融金属与泡沫之间传递。在消失模铸造中，模具冲模速率与界面形态学相对与传统的空模具重力影响是很小的。根据熔融前面的运动机理，在消失模铸造过程中，人工神经网络技术很可能计算出熔融形式界面的定位。整个铸造（包括开启和进给系统）结网成恰当形式的的立方单元。每个单元被认为是一个神经元，在模具冲模中处于三种状态，空的，接口的，满的。通过单元之间的内部连接，一个神经网络就形成了，其中每个单元只是与它相邻的单元相连，不与其它的单元相连。在单元连接形式上，通过固定的连接链和预定的设定链连接重力。由于模型的收缩率，除了固定在铸模边缘的单元，每个单元都与26维相邻单元连接。如果C(i，j，k)代表一个单元，Nr(i，j, k)代表连接C(i，j，k)的单元，那么： 从开始时间T0，根据它的活动功能和产生1或0的量，在相距一定的时间间隔下，每个网络单元改变它的活动状态。在相距一定的时间间隔下，每个单元连接26维相邻单元的输出量作为输入量。用这26维矢量来表示C(i，j，k)的输入量，其矢量式是： 在这里，是C(l，m，n)的输出量，在单位速度相同的时间内，代表了界面运动从C(l，m，n)到未填充的C(i，j，k)的距离。总共未填充的单元c(i，J，k 是：其中，是输入功能，代表26维重力矢量。根据相邻单元的速率和它们相对的特性，每个组件的重力矢量设置如下： 其中，说明了相对与相邻单元的方向，也是在相对应的位置泡沫形式的蒸发速率。从相关实验研究中，我们发现，金属静止端，真空度，模型密度，浇注温度和铸造特性因素的工艺参数决定了。为了这个特殊的网络设计,输入功能的作用是用来计算相对的界面从相邻的单元到C运动的距离,其详细的计算过程如下:(1) 通过相乘相应的组件的输入量和重力矢量,一个新的26维矢量就得到了,这个累加的组件的新的矢量是: 当C(i，J，k )是空的时候，(2) 通过相加两个组件矢量,由于填充方向相互面对,一个新的13维矢量就得到了: