遥控器成型中浇口位置的选择（二）

LK801114

从上面可以不难看出来，塑料的流动距离比较长再加上中间的按键型芯的阻挡，所以气泡较多，而按键是导致熔接痕的直接原因。总之，流动
性差是问题所在。
我参考了一些资料，决定把遥控器的浇口位置一般设置在其尖头的那部分。因为在这里有个圆角过渡，这样一来，流动性会好一点。操作后所的结果如下：
从上可以看出，无论是熔接痕还是气泡，都大大减少。基本可以接受。接着我做了一模多件及有冷却系统的分析，其结果如下：

[此贴子已经被admin于2003-3-24 19:47:54编辑过]

LK801114

老师，我把我的作业发上来了。您就这两个贴{遥控器成型中浇口位置的选择（一）（二）}评分行吗？

admin

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<img src="attachments/dvbbs/200332418465472546.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/200332418465472546.gif\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/200332418475447640.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/200332418475447640.gif\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/200332418481125840.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/200332418481125840.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/200332418491389185.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/200332418491389185.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/200332418492522816.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/200332418492522816.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/200332418501786413.gif" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/200332418501786413.gif\');}" onmousewheel="return imgzoom(this);" alt="" />

总结：从上可以看出虽然气泡问题解决了，可熔接痕的问题是仍然存在。由于按键型芯的存在，肯定会存在不少熔接痕。我想解决的办法是开多几个浇注口，增强熔接痕强度去弥补。



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[此贴子已经被作者于2003-3-24 19:49:25编辑过]

jingting

明显不对.塑件流在定模了,

linyang

作为作业，做到这样算不错了，其他同学的还没交来呢。都在干什么了？
可以加分

LK801114

第四楼说的不错，是在PRO/E里造型的时候弄错了，谢谢你指出来。

linyang

请将模型文件贴出来，还有，要说明材料、工艺参数、网格划分情况等等

LK801114

模型在遥控器成型中浇口位置的选择（一）里面材料是620-31，生产商是A SCHULMAN GMBH，注射压力为50MPA，温度为190度，锁模力为2700牛顿，网格的类型为FUSION，数量3510个，网格方面的比例为：Min Aspect Ratio 1.171892，而Max Aspect Ratio 9.921060。还有冷却水管道的直径是6CM，温度为25度。

zhengli

老师，塑件流在定模的问题怎么解决啊？请老师指点

playerx5

期待合理解

nfser

每见过6cm的水管诶，比手还粗呢？？？？

gucciwu

好強ㄚ...我也要要學ㄋ

gdcdyx

aspect ratio value>9,你还做真是勇气可嘉!同学仔细一点吧!
最好降到6以下,至少也要低于8

wq8888888

hao

xuhaoyang

问题太多！

xingxing

en

zhangting

<p>看看&nbsp; </p>[em01]