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基于
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注塑
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基于Proe手机后盖的注塑模设计,基于,Proe,手机,注塑,设计
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毕 业 设 计(论 文)外 文 文 献 译 文 及 原 文学 生: 范智义 学 号: 54404209 院 (系): 机电学院 专 业: 材料成型及控制工程 指导教师: 张昌松 2008 年 6 月 9 日浇道_ 浇道形状用于安装的拉料杆部分例如:一个联合的一个塑料模型joint part of-联合的一部分型腔_ 差距产生的一个组成部分,是在模塑模具。 它有时是指以凹的一部分,模具,通常是处理对腔板。Cavity-型腔 cavity plate-型腔板 core plate-型芯板Core-型芯夹紧力/关闭力_ 夹紧力,提出了对模具,以保持对模具封闭的压力,注入的熔融塑料。 夹紧开始与确认钳设立模具后,模具关闭过程完成,并继续,直到夹紧力达到了官方身份。 最大的力量,以遏止模具是用来指定一成型机,并代表的大小一成型机。 关闭力是施加充分的模具开放,以遏止了该动产的一面模具,以固定的一面。 模具是保持关闭下,低气压,直至完成,以避免损毁模具。 关闭力,通常分为两个步骤:它使用低气压在早期阶段闭幕,成为更高立即完成之前。 闭幕速度是分为两个层次,同时,为避免损坏模具,如果模具是封闭迅速。 此外,如果外国的问题是左内模,夹紧力可避免损坏模具。 的过程中关闭和夹紧是如下: 高速闭幕缓慢闭幕(模具保护电路启动)夹紧(压力上升)阻断时间/关闭时间_ 阻断时间是指时间,从当一个模具,完全是暂时封闭,直至时,夹紧力是加压。 阻断时间不会改变对一成型机。 关闭时间是指时间,从当一个模具开始关闭,直到当它是完全封闭的。 关闭时间不同,要视乎运动金额或形状(厚度)的模具。 模具是封闭的高速在第一,然后以低速行驶,立即之前,幻灯片核心或1角的PIN开始的感动。因此,调整结束的时间位置,速度的变化,或在低速区。 较短的关闭时间是,较短的成型周期时间可以;不过,夹紧必须做的安全,而非缩短其时间,因为不完整的夹紧将导致成型的缺陷。共聚_ 反应在其中两个以上的分子之一,化学物质相结合,制成一种新的化学物质与分子几倍。 在其他换言之,两个以上的材料相结合,并作出反应,使材料的性能不同,那些原来的。夹具/间隔_ 安装工具,用来安装腔适配器板和核心适配器板,以动产/固定板的成型机。 间隔器的职能作为一个底板设立钳,钳和持有下跌腔适配器板和核心适配器板与螺栓Core/cavity adaptor plate-型芯/型腔适配器Bolt-螺栓 Clamp-紧固 Spacer-垫板裂缝_ 一个破裂对零件所造成的内应力,外部冲击,或对环境的影响。Crack-裂缝脱气_ 脱气过程是释放水和空气包含在一个成型的材料,气体过程中产生的成型,空气中存在的模具成型之前。 成型或大或厚的部分没有脱气可能会造成肿胀或气泡表面上,加剧了外观。 脱气通常所做的决策一条壕沟在模具上或使用一个洞,就引射器和PIN 。 在这个数字以下,土地是用来做脱气和空气宣泄Runner-浇道 sprue-浇口 part-制件 to the outside of the mold-向外界的模具拔模锥度_ 梯度所作的腔或核心,使拆除部分从模具顺畅。 拔模的角度来看,通常需要1 -2度,但它依赖于物质和成型的形状,或是否有纹理的过程(过程中,使表面有点粗糙)是这样做。 在注塑成型,因为熔融塑料会缩减后成型,使拔模的角度上尽可能腔方面,和一个大角度对核心(插入)的一面。 因为结晶塑料具有较高的成型收缩率,收缩到内模具上腔的一面,这就使搬迁顺利进行,而坚持以模具上的核心(插入)的一面,这使得搬迁困难。因此,为了使草案的角度来看,您将需要采取粘附的核心(插入)方面的考虑。 在另一方面,无定形塑料低,成型收缩率和难以缩小到内。因此,拔模的角度对腔方面作出大的作为一对核心(插入)的一面。Slope-斜面BossThe boss shape used to install a screw to parts.e.g. for a joint of a plastics modelCavityThe gap generated where a part is molded in the mold.It sometimes refers to the concave part of the mold and usually is processed on the cavity plate.Clamping Force / Closing ForceClamping force is put on a mold to keep the mold closed against the pressure of the injected molten plastics.Clamping begins with confirming clamp up of the mold after the mold closing process finishes and continues until clamping force reaches the official capacity.The maximum force to clamp a mold is used to specify a molding machine, and represents the size of a molding machine. Closing force is exerted from full mold opening to clamp up of the movable side of the mold to the fixed side.A mold is kept closed under low pressure until the completion to avoid damage to the mold.Closing force is usually divided into two steps: it uses low pressure in the early phase of closing and becomes higher immediately before the completion.The closing speed is divided into two levels, also, to avoid damaging a mold if the mold is closed rapidly.Also, if foreign matter is left inside the mold, clamping force can avoid damage to the mold. The process of closing and clamping is as follows:High speed closing Slow closing (Mold protection circuit starts) Clamping (pressure rising) Clamping Time / Closing TimeClamping time refers to the time from when a mold is completely closed until when clamping force is pressurizing.Clamping time does not change on one molding machine. Closing time refers to the time from when a mold starts closing until when it is completely closed.Closing time varies depending on the movement amount or the shape (thickness) of a mold.A mold is closed at high speed at first, and then at low speed immediately before a slide core or an angular pin starts moving. Therefore, adjust closing time at the position where the speed changes or in the low speed zone.The shorter the closing time is, the shorter the molding cycle time can be; however, clamping must be done securely rather than shortening its time, because incomplete clamping will cause molding defects.CopolymerizationThe reaction in which more than two molecules of one chemical material are combined to be made into a new chemical material with several fold molecules.In other words, more than two materials are combined and react to make a material of properties different from those of the original.Clamps / SpacerThe setup tools used to install cavity adaptor plate and core adaptor plate to the movable / fixed plates of the molding machine.The spacer functions as a bottom plate for setting a clamp, and the clamp holds down the cavity adaptor plate and the core adaptor plate with a bolt.CrackA breaking on parts caused by inner stress, external shock, or environmental impact.DegassingDegassing is the process to release the water and air contained in a molding material, the gas generated during molding, and the air existing in the mold before molding. Molding large or thick parts without degassing may cause swelling or bubbles on the surface, aggravating the appearance.Degassing is usually done by making a ditch on the mold or using a hole on the ejector pin.In the figure below, the land is used to do degassing and air venting.Draft AngleThe gradient made on the cavity or the core to make removal of parts from the mold smoother.Draft angle normally requires 1 - 2 degrees, but it depends on the material and molding shape, or whether a texture process (the process to make the surface a little rough) is done.In injection molding, because molten plastics will shrink after molding, make as small a draft angle as possible on the cavity side, and a large angle on the core (insert) side. Because crystalline plastics has high mold shrinkage, it shrinks into the inside of the mold on the cavity side, which makes removal smooth, whereas it adheres to the mold on the core (insert) side, which makes removal difficult. Therefore, to
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