模具专业英语IV

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▪在注塑模中必须有一个流动通道连接喷嘴(注塑机上)到各个型腔。这 个流动通道就称为浇注系统。通常浇注系统由主流道,分流道和浇口组成 。这些术语可以用在流动通道自身,也可以用在开模顶出塑件时从流动通 道中取出的流道废料。
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Chapter 4 Feed system 浇注系统 A typical feed system for a four-impression, two plate-type mould is
shown in Figure 4.1. It is seen that the material passes through the sprue, main runner, branch runners and gate before entering the impression. It is desirable to keep the distance that the material has to travel down to a minimum to reduce pressure and heat losses.② It is for this reason that careful consideration must be given to the impression layout.
It is necessary to provide a flow-way in the injection mould to connect the nozzle (of the injection machine) to each impression. This flow-way is termed the feed system. Normally the feed system comprises a sprue, runner and gate. These terms apply equally to the flow-way itself, and to the moulded material which is removed from the flow-way in the process of extracting the moulding.①
▪冷料井,正对浇口套的位置,它的作用理论上是容纳喷嘴前端在冷却和顶 料阶段已经冷凝的塑料。然而事实上,它更重要的意义是在于提供了一种为 了顶料目的使得浇口可以从浇口套中拔出的方法。(见拉料杆,p131)
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Chapter 4 Feed system 浇注系统
The runner is a channel machines into the mould plate to connect the sprue with the entrance (gate) to the impression. In the basic twoplate mould the runner is positioned on the parting surface while on more complex designs the runner may be positioned blow the parting surface.④
▪一个典型的用于四模腔,两模板型的浇注系统如图4.1所示。从图中可见, 塑料在进入型腔之前经过主流道,主分流道,次分流道和浇口。塑料流通的 距离要求尽可能地小以减少压力和热量的损失。正是由于这个原因,型腔的 布置必须加以仔细的考虑。
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Chapter 4 Feed system 浇注系统 The purpose of the cold slug well, shown opposite the sprue, is
材料成型及控制工程 专业英语
上海工程技术大学 材料学院
2009 © Hisuntech Corp.
Chapter 4 Feed system 浇注系统
➢ 4.1 GENERAL
feed 进浇
nozzle (注射机)喷嘴
slug 来自百度文库条
feed system 浇注系统
branch runner 次级分流道
cold slug well 冷料井
flow-way 流动路径
extract 取出
chilled 已冷却的
main runner 主(一级)分流道
impression layout 模腔布排
cooling and ejection phase 冷却和顶出阶段
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Chapter 4 Feed system 浇注系统
▪流道是在模板上加工出的连接主流道和进入(浇口)型腔的一条沟槽。在两板式基 本模具中,流道设置在分型面上;而在较复杂的设计中,流道也许设置在分型面的下 面。
▪The wall of the runner channel must be smooth to prevent any restriction to flow. Also, as the runner has to be removed with the moulding, there must be no machine marks left which would tend to retain the runner in the mould plate.⑤ To ensure that these points are met, it is desirable for the mould designer to specify that the runner (channel) is polished ‘in line of draw’.
theoretically to receive the material that has chilled at the front of the nozzle during the cooling and ejection phase. Perhaps of greater importance is the fact that it provides positive means whereby the sprue can be pulled from the sprue bush for ejection purposes.③
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