首先要了解为什么会出现脱模困难的问题,
First of all to understand why the demoulding difficult problem,

 
1 模具内由凹槽;
1 the mould by grooves;

 
2 脱模斜度不足;
2 draft;

 
3 模具光洁度不高。
3 mold finish is not high.

 
1 由于脱模斜度不足而造成的故障非常常见,在进行制品设计时,必须在图面上标明脱模斜度,脱模斜度通常范围在1~2度之间,在这一范围内以尽量大为好,特殊的场合也允许为0.5度以上
1 failure caused by insufficient draft is very common, in the product design, must be marked on the map draft, draft usually range between 1 ~ 2 degrees, with much good as far as possible in this scope, special occasions also allows for more than 0.5 degrees

 
2 射出压力如果太高,制品同模具太密切贴紧,脱模就变得困难
If 2 injection pressure is too high, products with mold too closely tiejin, demoulding becomes difficult

 
3 为了顺利使制品脱离模具,通才使用含有硅油的脱模剂,然而使用脱模剂时只能很薄地涂一层。如果喷涂太厚想擦去很难。还有由于脱模剂地作用,制品上的打印标记等二次加工变的很不好,一旦涂布在模具上的脱模剂附在制品上想擦去是相当地困难的。
3 in order to make the products successfully from the mold, a liberal with silicone release agent, however, when using the release agent can only be painted a layer of thinner is so. If the coating is too thick to wipe is difficult. And due to release agent, printing mark in the products and other secondary processing is not good, once the coating on the mould release agent attached to the products to wipe is quite difficult.

 
根据以上根本原因,想出解决办法:
According to the above root cause, come up with a solution:

 
1 即时:下降射出压力,缩短保压时间,降低模具温度降低脱模速度,喷涂脱模剂
1: instant injection pressure drop, shorten the holding time, the lower mold temperature slows the demoulding, spraying mold release agent

 
2 短期:提高模具型腔的光洁度
Short term: to improve the mold cavity surface

 
3 长期:增大脱模斜度,增加脱模销的数目
3 long: increase the draft, increasing the number of the ejection pin

 
4. 由于材料的差异
4. Because of the difference of the material

 
既重又硬的材料,例如GPPS,由于脱帽斜度不足而引起制品破损的事常见。对既粘又软的材料,例如PE, 有可能使制品呈若干块状根切掉。
Is heavy and hard material, such as the GPPS, due to insufficient hat slope common have been broken. For both sticky and soft material, such as PE, may make the products in a number of tuberous root cut off.