Hotline:0769-81186880

Your location:Home » Plastic mold injection principle

Company News

Plastic mold injection principle

Plastic mold mainly by the casting system, forming parts and structural parts of three parts. Which is pouring system and forming parts are in direct contact with the plastic parts, and with the plastic and products and changes, is the most complex plastic mold, the largest change, requiring processing of the highest degree of finish and precision.
 
Plastic mold pouring system refers to the plastic from the nozzle into the cavity before the flow part, including the main channel, cold material, shunt and gate and so on. Molding parts are the various parts that make up the shape of the product, including dynamic mold, mold and cavity, core, forming rod and exhaust port.
 
First, the main channel
It is a mold in the injection nozzle to the nozzle or cavity of a channel. The top of the main flow path is concave to interface with the nozzle.
 
The main channel inlet diameter should be slightly larger than the nozzle diameter (0.8mm) to avoid the flash, and to prevent the two are due to convergence is not allowed to intercept.
 
Import diameter according to the size of the product, generally 4-8mm. The main channel diameter should be expanded inward at 3 ° to 5 ° angle, so that the flow of hair removal.
Second, the cold material points
It is a hole at the end of the main runway to catch the cold material produced between the two injections at the end of the nozzle, thereby preventing clogging of the manifold or gate. If the cold material is mixed into the cavity, the internal stress is liable to be produced in the article.
 
The diameter of the cold material is about 8 to 10 mm and the depth is 6 mm. In order to facilitate stripping, the bottom of the demolition of the pole is often born. The top of the demolding bar should be designed to be tortuous hook or set down trough, so that when the mold can be successfully pulled out of the main road.
 
Third, the diversion channel
It is a multi-slot mode to connect the main channel and the various cavity of the channel. In order for the melt to fill the cavities at equal velocity, the arrangement of the shunts on the mold should be symmetrical and equidistantly distributed. The shape and size of the cross-section of the shunt are affected by the flow of the plastic melt, the release of the product and the ease of mold making.
 
If the flow is equal, the flow resistance of the circular section is the smallest. But the cylindrical surface of the smaller than the surface of the bypass flow of the cooling of the negative, and this shunt must be set up in the two molds, both laborious and easy to align.
 
Therefore, it is often used in the trapezoidal or semicircular cross-section of the diversion channel, and opened with a mold on the mold half. The flow path surface must be polished to reduce flow resistance to provide faster filling speed. The size of the flow channel is determined by the size and thickness of the plastic variety, product.
 
For most thermoplastics, the cross-section width of the diversion channel is no more than 8m, large up to 10-12m, small 2-3m. To meet the needs of the premise should be to minimize the cross-sectional area, so as not to increase the diversion of hair and extended cooling time.
 
Four, gate
It is connected to the main channel (or shunt) and the cavity of the channel. The cross-sectional area of the channel can be equal to the main channel (or shunt), but is usually reduced. So it is the entire flow channel system in the smallest part of the cross-sectional area. The shape and size of the gate have a great influence on the quality of the product.

Contact Us

Junan Mould

Mobile:18926888318

Phone: +86-0769-81186880

Fax:+86-0769-81186655

E-mail:shaopingpeng@www.810150.com

Address:No.15th、17th,Huangwu Rongxing Road, Dongkeng Town, Dongguan City

一卡二卡三卡四卡网址,国产欧美一区二区三区不卡,韩国一卡二卡三卡四卡无卡免费,一本大道一卡二卡三卡四卡在线乱码,插痛30分钟一卡二卡 伊人久久情人综岁的合网18| 亚洲成AV人片迅雷BT下载Q链接| 337P日本欧洲亚洲大胆69影院| 国产成人亚洲高清一区| 北京富婆露脸对白在线| 老老头老太牲交| 亚洲一区二区三区香蕉| 国产高清亚洲日韩一区| 老司机免费福利午夜入口| 欧洲性爱| 最新国产精品拍在线观看| 男女男精品免费视频网站| 中国老太婆GRΑNNYTHBE| 美女张开腿露尿与奶头| 免费人成在线观看播放| 最好看的2018中文字幕免费| 黄动漫视频免费视频网站| 美女自卫慰黄网站免费| 最新电视剧大全2021免费观看| 中文字幕奶水喷出在线观看| 无限资源日本第一集2018| 亚洲不卡AV不卡一区二区| 俄罗斯14一18处交A片| 自拍偷在线精品自拍偷| 日本特大A级猛片| 熟妇人妻午夜寂寞影院| 中文字幕在线| 自拍偷自拍亚洲精品| 美丽人妻互换| 国产麻豆精选AV| 久久久久久久精品免费RDE| 色综合啪啪色综合啪啪是大| 亚洲人成网站在线播放2020| 大胆欧美高清VIDEOSEDEXOHD| 欧美大尺度又粗又长真做禁片| 国产 在线 精品 美女 露脸| 五月综合缴情综合小说| 末成年女AV片| 在线无码中文字幕一区| 久久大香香蕉国产| 日韩一卡二卡三卡四卡无卡免费视频| 免费现黄频在线观看国产| 美女班主任被强奷30分钟| 午夜快车国语完整视频| 无遮挡十八禁污污污网站| 18禁黄无遮挡网站| 玩少妇流水白浆30P| 国产一区二区三区美女| 宝贝腿张开点我轻点两男一女| 18禁真人床震无遮挡Α片免费| 人妻少妇精品无码专区| 成年网站未满十八禁视频app| 亚洲男人第一无码AV网站| 18禁无遮挡全彩漫画免费| 午夜dj在线观看免费完整直播| 麻豆果冻传媒国产剧在线观看| 无码AV天天AV天天爽| 午夜dj视频观看下载| 一区二区三区高清AV专区| 中文字幕无码日韩专区| 亚洲成AV人片迅雷BT下载Q链接| 成年日韩片AV在线网站| 男女真人国产牲交A做片野外| 亚洲AV中文无码4区| 成年动漫3D无尽视频不卡 | A级午夜绝情美女图片| 国产电影一卡二卡三卡四卡| 伊久线香蕉观新综合在线| 伊久线香蕉观新综合在线| 一本大道香蕉久97在线播放| 一卡二卡三卡免费网站| 适合女性自慰的A片| 最佳情侣高清视频在线观看| 亚洲GIF动图无码专区| 年轻母亲| 翘臀后进美女动态图啪| 裸体美女下部露尿口无遮挡| 无码超清日韩在线视频| 国产在线观看香蕉视频| 国产多对交换完整视频| 又黄又粗又爽免费观看| 国产一卡二卡三卡四卡免费播放在线观看| 陈冠希实干张柏芝13分钟| 国色天香在线观看播放影院无删减| 欧美、另类亚洲日本一区二区| 一二三区乱码不卡| 真实男女狂XO视频免费| 热99RE6久精品国产首页青柠| 抖音在线视频解析水印| 欧美毛片免费全部免费观看| 西西人体大尺度44RTNET| 欧美激情在线播放16页| 爱滋初体验国语完整版| 欧美最猛12TEEVIDEOS欧美| CHINESE中国偷拍CHINA| 中国欧美潮喷VIDEOSVIDEO| 6080YY电影在线看| 老老头老太牲交| 午夜j在线观看免费完整高清在线视频| 亚洲色欲色香天天天综合网| 日本AV在线观看无码不卡| 午夜中文字幕无码无删减| 小荡货你夹的老师好紧| 一卡二卡三卡四卡无卡免费| 国产色AV在线| 老师H口漫画全彩无遮盖| 成年片黄网站色大全亚| 野花社区在线视频在线| 先锋影音亚洲中文字幕av| 漂亮人妻当面被朋友玩弄| 亚洲AV乱码字幕无线观看| 野花社区在线观看完整版| 亚洲Av综合日韩| 最猛欧美TEEVIDEOS| 五十路熟妇高熟无码视频| 国产初高中生VIDEOS小受| 天天影视性色香欲综合网| 国色天香一卡二卡| 又黄又爽又猛的视频免费| 亚洲欧洲日产国码高潮| 日本三级香港三级人妇安全网| 8090YY在线A片无码| 学生粉嫩下面自慰喷水|