亚洲va中文字幕欧美不卡-亚洲va在线va天堂成人-亚洲va在线va天堂va手机-亚洲va在线va天堂va888www-久一视频在线-久污tv

Welcome to Shenzhen Zhongyuan Plastic Co., Ltd!

News



Tel:(0755)27151698
Fax:(0755)27150611
Mailbox:szzyzcl@163.com / szzy@szzy99.com
Add:Building A1 and A2, No.1 Industrial Zone, yuliu property company, Gongming town, Bao'an District, Shenzhen
Industry information

當前位置:

首頁 News Industry information

Adjustment and improvement of plastic shell material shortage

Release time:2022-03-21

Shell shortage, also known as lack of glue, insufficient filling, insufficient injection, incomplete plastic shell, etc., is the most common problem we encounter in plastic shell injection molding every day, which is usually manifested in the end of the molding area and the position of fine ribs. Compared with other defects, the debugging is simple, which can be solved by increasing the injection pressure, injection speed, injection position and other methods in the process, but sometimes other factors are not excluded.

6.jpg


Adjustment and improvement methods leading to the shortage of plastic shell materials


1. The setting of injection molding conditions is unreasonable. The injection pressure is too low, the injection speed is too slow, the injection position is too short, and the molding time is too short. Because the amount of glue required for the plastic shell is not enough, the plastic shell is not filled enough (adjust the value of each parameter appropriately).


2. Whether the injection molding machine has back pressure. If the injection molding machine has no back pressure, or the back pressure of the stored material is too small, the dissolved material is not evenly compacted to ensure uniformity and homogeneity, resulting in insufficient filling of the plastic shell (appropriately increase the back pressure).


3. Whether the heating ring of the barrel nozzle is damaged and whether the thermocouple is clamped improperly. If the heating ring does not reach the rated temperature, the nozzle will condense, and the resistance during melt injection filling is too large, resulting in insufficient filling of the plastic shell (replace the heating ring and tighten the thermocouple).


4. Check nozzle blockage by discharging empty bullets. If the nozzle is blocked by iron and the filling is unstable during production, the plastic shell is often accompanied by the phenomenon of more glue and less material (clean the nozzle in time).


5. Residual material in nozzles and intersections / drums and flanges. If there is material left behind the mold, the plastic shell will lack material due to insufficient pressure in the mold cavity during the injection filling process (solve the problem of material shortage in time).


6. The mold temperature is uneven or too low. If the temperature of the mold is too low, the solution will condense too early during filling and cannot be filled to the set position, resulting in insufficient plastic shell. (increasing the mold temperature and changing the series water circuit to parallel connection can also appropriately shorten the molding cycle).


7. For materials with poor fluidity, such as PC, PA, POM, etc., you can increase the diameter of the runner and gate on the mold, technically increase the temperature of the barrel, increase the mold temperature regulator, and add additives to the materials to improve the fluidity, so that the melt can quickly reach the set position in the mold cavity to avoid material shortage of the plastic shell (appropriately increase the mold temperature).

Copyright: Shenzhen Zhongyuan Plastic Co., Ltd. | mold processing customized manufacturer. If you want to know the processing price of the factory, how much is it, and which is good, please contact us Yue ICP Bei No. 17060480
主站蜘蛛池模板: 日韩三级欧美 | 性刺激性色爽爱小说 | 三级黄色在线视频中文 | 亚洲h网站 | 中国性欧美 | 伊人网站在线 | 午夜片在线观看 | 欧美性夜 | 中文字幕一区在线观看视频 | 天天插天天射天天干 | 色黄网址 | 日本高免费观看在线播放 | 羞羞色男人的天堂 | 日韩 欧美 亚洲 中文字幕 | 四虎永久免费影院 | 亚洲综合网在线观看 | 日韩欧美综合视频 | 日本免费高清视频二区 | 中文字幕在线精品不卡 | 日本青草视频 | 宅男午夜视频在线观看 | 热e国产 | 青青青在线视频免费观看 | 日韩美在线 | 日韩欧美综合在线 | 天天躁天天狠天天透 | 亚洲成a人片在线观看中文app | 日本高清视频一区二区三区 | 日韩孕交| 日本激情视频一区二区三区 | 三级韩国一区久久二区综合 | 亚洲色欲色欲www在线观看 | 日本高清视频在线的 | 三级福利片 | 日韩毛片免费在线观看 | 色综合天天综合网国产成人网 | 亚洲精品在看在线观看 | 亚洲国产精品成人午夜在线观看 | 欧美在线视频免费观看 | 日韩精品一区二区三区高清 | 又粗又硬又爽的三级视频 |