Shanghai Daoqin Plastics Co., Ltd.

        01.射咀

        熔胶 usually from 射嘴流入注口, has mold, is mold separation, is it 延伸至 mold 底部. has types main/primary type type: 开放式射击嘴 and 封闭式射嘴. injection molding production in, more use 开放式射嘴, is it 们既便宜 also relatively less can can property.

         if injection molding machine remove pressure plant/unit, that make is viscosity relatively low 熔胶也 can use this type of 射嘴. has 时一定 need use 封闭式 射嘴, this type of as is 止流阀 function, will in material in plastics anionic 挡住. ensure positive 确 接入注口 sleeve/set, 顶端孔 need ratio sleeve/set is fine small, this make can relatively from mold in 撤出. sleeve/set need ratio 射击嘴 large 1mm, 即射嘴 semi need ratio sleeve/set semi fine 0.5mm.

        02. device and combined 式射嘴

         plastics can use property 射嘴 滤 device remove, melt and plastics 流 一 strip/profile 信道, this by parts separation formed narrow 空间. this narrow and can 掉杂质并 improvement plastics mixed combined. therefore 延伸开, can use solid mixed combined device to more good mixed combined 效果. this plant/unit can in material and between, separation and again mixed combined 熔胶 工 as, more is make melt 流 不锈钢 信道.

        03.排 gas

         has plastics in injection molding need in material gas, let gas 体排出. more 数情况 lower this gas is gas, it can can is melt water separation or mono separation gas 体. this gas 体若不 can 释放出, gas by pressure shrink belt/tape to mold in, it expand in product in formed bubbles. need in gas to 达射嘴 or mold front it, reduce or decrease less screw 根直径就 can in material in is decrease pressure.

         in this 里, gas can from material upper or in 排出. rear screw 根直径 increase large, will material 熔胶适 toward 射嘴. this 项设施 injection molding machine is gas injection molding machine. this type of gas injection molding machine upper 方应该 has catalytic device very good device, will can can has gas remove.

        04. increase back pressure function

         is to high quality 熔胶, plastics need add hot or 熔化, need separation mixed combined. use positive screw can 恰 当 熔化 and mixed combined, but also in material in tool 备足够 pressure (or back pressure), obtain mixed combined and hot force property.

         increase retardant force can in material inner generate back pressure. screw need use more long time 复位, injection molding machine system in has more more abrasion loss and consumption. can can maintain back pressure, and gas 隔绝, need temperature degree and mixed combined degree 一致.

        05.止流阀

        无论 using/adopting that type of screw, its usually has 止流阀, is anti plastics 由射嘴流出, 也会装 has decrease pressure (倒索) plant/unit or especially 射击嘴. use 止流产供销, must 定期检查, it is material inner important 部份. currently, 开关式射嘴并不普遍 use, is 射击嘴装备 inner easy plastics and separation understanding. 现时每 types plastics has suitable 射击嘴 type type.

        06. screw rear 退(倒索)

         many injection molding machine 都配备 screw rear or plant/unit. screw 转动停止时, liquid pressure will its 撤回以吸回射嘴尖端 plastics plant/unit use 开放式射嘴. will 回吸 数 amount can can reduce, is 进入空 gas to plastics belt/tape issues.

        07. screw material

         large separation injection molding cycle in must need relatively 螺村 转动 amount, make screw injection rear, more 数会余 a small amount of soft plastics, this can ensure screw to has 效 推进 time and maintain solid 定 射击 pressure. small type injection molding machine material is 3mm; large type injection molding machine is 9mm. use more large screw material value, need maintain 不变. in screw material large small can control in 0.11mm之 inner.

        08. screw speed degree

         screw speed degree significantly effect/influence injection molding process stability degree and function in plastics upper hot amount. screw 转动愈 fast, temperature degree high, screw high speed 旋转时, to plastics abrasion scratch (剪切) can amount improve/increase efficiency, meanwhile increase large temperature degree non-uniform degree. due to screw surface speed degree important property, large type injection molding machine screw speed degree relatively small type injection molding machine is less, causes is in and other speed degree large screw generate hot can ratio small screw high very more. due to plastics different, screw speed degree different.

        09.射胶 amount

         injection device machine assessment usually is 按每次 injection molding in can injection PS amount 而定, can can 按盎司 or amount. types system is injection molding machine can injection 熔胶体积而定.

        10.塑化 can force

         injection molding machine assessment usually is according to its 1 small inner can uniform 熔化PS material amount, or add hot uniform temperature degree PS amount 而定(以磅公斤计), this is can force.

        11.塑化 can force 估计

         need 确定产吕质素 can in production process in maintain, can combined use has output/production volume and can force simple 公式, lower 示: t=(总 injection amount gX3600)÷(injection molding machine amount kg/hX1000)t即 is most low cycle time, mold cycle time low 于t value, injection molding machine can will plastics separation 塑化, 以达致均 匀 熔胶 viscosity, injection molding parts 常出现偏差. especially is attention/notes injection molding thin or precision products 质时, material amount and amount must versus combined.

        12.射 material 缸滞留 time

         plastics separation understanding is speed rate is 取决于 temperature degree and time. 例如, plastics high temperature degree time rear separation understanding;但处于 relatively low temperature ring 境时, need relatively long time separation understanding. plastics in material inner time separation important.

        实际 滞留 time can through 实验确定出, methods is amount degree has color plastics through material 缸 需 time, can lower 列公式 coarse 略 计算出: t=(射 material 缸额定 material amount gX cycle time S)÷(射 material amount gX300)请 attention/notes, has plastics in material in time long 于计算 需 time, this is it can poly in material in.

        13.计算滞留 time and important property

        按 generally method, 应计算 certain plastics in 一特定 injection molding machine upper time. especially large type injection molding machine using/adopting relatively less material amount 时, plastics easy separation understanding, this non from can to. if time short, plastics will can uniform 塑化;滞留 time long plastics property 质则会衰 decrease.

        故一定 need maintain time 一致. methods: ensure injection molding machine plastics tool has stability formed separation, dimensions and 形状. injection molding machine machine parts has 任何失常 or loss consumption phenomenon, need toward repair report.

        14.射 material temperature degree ring 境

        应当 attention/notes, temperature degree is very important, use 任何射 material temperature degree is property. if has add certain 一特定 plastics experience, from most low setting 开始. usually 第一区 temperature degree is most low value, can anti plastics in material in 早 熔化 and viscous 连.

         its it temperature degree is rise high 直至达 to 射嘴, is anti 止滴漏, in 射嘴尖端 temperature degree 往往稍 low. mold by add hot, cooling, due to many mold dimensions 关系, mold by separation, remove non has 说明, 各区应该 setting is large small dimensions.

        15.熔胶 temperature degree

         can amount or gas method amount degree. utilizing rear 者进行测 amount 时, must small ensure hot plastics 时不会 发生意 outer, is hot plastics high temperature 会烧伤皮肤, 甚至腐蚀皮肤. in injection molding inner, is has outer.

         therefore, in hot plastics or upper hot plastics 四溅 危险, 应当戴 upper sleeve/set and 面罩. is ensure safety, hot 针 尖端应预先 add hot need amount temperature degree. types plastics has 一 特定 熔胶 temperature degree, need to this temperature degree injection molding 实际射 material value also 需视乎螺村转动 speed degree, back pressure, material amount and injection molding cycle 而定.

        16. mold temperature degree

         need 经常检查 injection molding machine is in mono upper temperature degree lower setting and 运行. this is non important. is temperature degree effect/influence injection molding parts surface light degree and output/production volume. has amount 出 数 value must lower, 并按指定 time injection molding machine.

        17. uniform cooling

         injection molding formed injection molding parts must uniform cooling, is 说, mold different 部份必 must different speed rate cooling, this 样, parts products uniform cooling. injection molding parts must most fast speed degree cooling, meanwhile need ensure generate defect, surface 不 平 slip, material property 质起变化 and other. injection molding parts separation cooling speed degree must versus and other, 却指以 non-uniform methods cooling mold, will cold water mold inner 蕊部份, mold outer using/adopting relatively water cooling. injection device 塑公差 precision products or water 口熔流 relatively long large type products more using/adopting tips/techniques.

        18. temperature degree and cooling 检查

         need 经常检查 injection molding machine is in mono upper temperature degree lower setting and 运行. this is non important. is temperature degree effect/influence injection molding parts surface light degree and output/production volume. has amount 出 数 value must lower, 并按指定 time injection molding machine.