Shanghai Daoqin Plastics Co., Ltd.

         hot runner separation types, separation sheet/plate, nozzle, temperature 控箱. can 看看我放 图纸, gate material, through separation sheet/plate nozzle, temperature 控箱 阿诺立 is temperature.

         hot runner mold is utilizing add hot plant/unit make runner inner melt 始终不凝 solid mold. is it ratio mold formed cycle short, but also more raw materials, therefore hot runner mold in world industrial 发达国家 and to is application.

         classification

         hot runner system separation is 绝 hot runner (fully hot runner) and micro type semi hot runner system (semi hot runner). hot runner design complex, 但效果 good and cost non low. micro type semi hot runner structure is 简, stability good use, fault/failure rate low, structure simple 因而维护 cost low, for production stability has more large ensure.

         hot runner classification

        开放式(used for micro type semi hot runner), 针阀式(used for hot runner).

         hot runner system generally hot nozzle, separation sheet/plate, temperature and parts and other separation formed. hot nozzle generally 包括两 types: 开放式 hot nozzle and 针阀式 hot nozzle. due to hot nozzle 形式直接决定 hot runner system selection and mold manufacturing, 因而常 versus will hot runner system separation formed 开放式 hot runner system and 针阀式 hot runner system. separation sheet/plate in more or more material, mono material material 位偏置时 using/adopting. material usually using/adopting P20 or H13. separation sheet/plate generally separation is standards and non standards large type, its structure main/primary type in mold upper distribution 情况, nozzle and gate 位置 决定. temperature 控箱包括主 machine, cable, connectors and 接线公母插 base/seat and other. mold micro small hot runner parts usually 包括: add hot device and hot electrical 偶, runner 密封圈, parts and box/case and other.

mono 穴安装

more 穴安装

三 sheet/plate and hot 浇道之差

针阀式安装

三 sheet/plate add hot 浇道

         advantages

         shrink short cycle

         made parts molding cycle shrink short, has system cooling time made, made parts molding solid rear can and ejection. many use hot runner mold production thin parts molding cycle can in 5秒钟 below/following.

        节省 plastics

         in pure hot runner mold in has cold 浇道, therefore production material. this for/regarding plastics price application project especially heavy large. upper, upper main/primary hot runner production 厂商均 in world upper and plastics raw materials price year to development. is hot runner technology is decrease/reduce material reduce material has 效途径.

         decrease/reduce waste product

         decrease/reduce waste product, improve/increase product quality. in hot runner mold molding process in, plastics melt temperature degree in runner system to control. plastics can more is uniform 一致 状态流入各 mold cavity, its is quality parts. hot runner molding parts gate quality good, demolding rear residual stress low, parts deformation small. therefore market upper very more high quality product hot runner mold production. 如人们熟悉 MOTOROLA手 machine, HP printing machine, DELL笔记本 electrical many plastics parts use hot runner mold made as.

         production 自动化

        消 remove rear 续工序, has production 自动化. made parts hot runner mold molding rear is formed product, 无需修剪 gate and recycling processing cold and other 工序. has production 自动化. outer very more product production 厂家均 will hot runner and 自动化结 combined 起 以 large degree improve/increase production efficiency. 　 many plastics molding process is in hot runner technology upper development 起. 如PET预 molding made as, in mold in more color 共注, multiple material process, STACK MOLD and other.

         disadvantages

        尽 tube/pipe and cold runner mold versus ratio, hot runner mold has many significantly advantages, mold use need understanding hot runner mold disadvantages. 概括起 has below/following 几点.

         cost upper rise

         hot runner parts price comparison 贵, hot runner mold cost can can large degree increase high. if parts output/production volume small, mold tool cost ratio/proportion high, upper 不划算. mold micro editor for many development China mold use 户, hot runner system price is effect/influence hot runner mold use main/primary issues 之一

         equipment requirements high

         made as process equipment requirements high, hot runner mold need precision processing machine as ensure. hot runner system and mold formed and combined requirements is 严格, mold in production process in 会出现 very more heavy issues. plastics 密封不 good plastics loss bad hot runner parts in production, nozzle parts and gate versus for 位置不 good products quality heavy decline and other.

        操 as repair complex

         and cold runner mold versus ratio, hot runner mold as repair complex. use as 不当极 easy loss bad hot runner parts, make production method 进行, formed large loss 失. for/regarding hot runner mold new use 户, need relatively long time use experience.

         large more molding product defect is in and injection molding stage/phase formed, has and mold design has 关, can can effect/influence factors 包括: mold cavity 数, cold / hot runner system design, 射入口 type type, and dimensions, and product structure and other. therefore, is due to mold design formed product defect, need in made as mold 时候, for mold design and process parameters analysis.

         in obtain mold trial rear, as usually need for mold specific 情况进行 assessment, in for mold 进行修改 process in increase necessary cost and time. more 数情况 lower, this type of assessment also for machine process parameters setting. is 说, is mold design in 不足, as can can in 不知情 情况 lower 进行 不 positive 确 设置. in this type of lower, equipment production as process is positive 常, is production combined product parameters scope/range non small, parameters 设置出现任何 micro small 偏差, can can 会导致 most product quality ultra- 出 允许 误差 scope/range, 而由此 generate production cost ratio 事先进行 mold optimization generate use high more.

         mold trial 目 就 is need optimization process parameters and mold design. this 样, is material, machine setting or ring and other factors 发生 变化, can ensure stability and 不间断 批 amount production ring 境, not only is is obtain good sample. this non important.

         mold trial steps

         steps 1.设置 material temperature degree

         this need attention/notes is, material temperature degree 设置必 must based on material supply recommendation. this is is, different 厂家, different grade same material can can tool has versus large 差异, material supply 商往往 for 自己 材 material has versus in-depth research and understanding. use can according to recommendation basic 设置, rear again according to specific production 情况进行适当 micro 调.

         remove outer, also need use device amount melt temperature degree. is setting material temperature degree due to ring 境, temperature degree device Model/Grade and deep degree different and other causes, can ensure and melt temperature degree 100% 一致. has due to 油污 存 in or other causes, melt temperature degree and material 桶 设置 temperature degree very large (以 front, 我们曾 has temperature versus high 达30℃ 例子).

         steps 2.设置 mold temperature degree

        同样, mold temperature degree 设置也必 must according to material supply provide recommendation value.

         need attention/notes is, 我们 说 mold temperature degree is mold cavity surface temperature degree, is mold temperature control device upper temperature degree. very more 时候, due to ring and mold temperature control device rate selection and other causes, mold temperature control device upper temperature degree and mold cavity surface temperature degree 并不一致. therefore, in positive mold trial front, must for mold cavity surface temperature degree 进行测 amount and 记录. meanwhile, also for mold type inner different 位置进行测 amount, 查看各点 temperature degree is balanced, 并记录 versus 应 结果, is rear mold optimization provide data.

         steps 3.

         according to experience, setting amount, injection pressure value, injection speed degree, cooling time and screw speed and other parameters, for its 进行适当 optimization.

         steps 4.进行 filling experiment/testing, 找出转换点.

        转换点 is from injection stage/phase to holding pressure stage/phase 切换点, it can is screw 位置, filling time and filling pressure and other. this is injection molding process in most important and most basic parameters 之一. in filling experiment/testing in, need below/following 几点:

        (1) experiment/testing holding pressure pressure and holding pressure time usually setting is 零;

        (2) product generally filling 至90%~98%, specific 情况取决于壁 thick and mold structure design;

        (3) due to injection speed degree effect/influence pressure 点 位置, therefore, in 每次改变 injection speed degree meanwhile, must heavy new 确认转 pressure 点.

         through filling experiment/testing, use can to material in mold cavity flow 路径, from 而判断出 mold in which easy gas, or which need improvement gas and other.

         steps 5.找出 injection pressure value.

         in process in, attention/notes injection pressure and injection speed degree 关系. for/regarding liquid pressure system, pressure and speed degree is versus 互关联. therefore, method meanwhile setting this parameters, make its meanwhile meet/satisfy conditions.

         in upper setting injection pressure is injection pressure value, therefore, will injection pressure value setting is large 于实际 injection pressure. if injection pressure low, make injection pressure or ultra- injection pressure value, that 么, injection speed degree 就会因 is to force made 而自动 decline, from effect/influence injection time and molding cycle.

         steps 6.找出 optimization injection speed degree.

         this 里 指 injection speed degree, is meanwhile meet/satisfy make filling time amount short, meanwhile filling pressure amount small injection speed degree. in this process in, need attention/notes below/following 几点:

        (1) large separation product surface defects, especially is gate defect, is due to injection speed degree 引起.

        (2) more grade injection in one-time injection can meet/satisfy process demand lower use, especially is in mold trial stage/phase.

        (3) in mold good, pressure setting positive 确, injection speed degree 足够 情况 lower, injection speed degree fast slow and flash generate has 直接关系.

         steps 7. optimization holding pressure time.

         holding pressure time is gate cold time. generally, can through heavy methods gate cold time, from to different holding pressure time, most optimization holding pressure time is make product heavy to most large time.

         steps 8. optimization other parameters, holding pressure pressure and clamping force and other.

         most rear, need strong/high is, mold trial and focus/key point in optimization mold and process, meet/satisfy amount production requirements, not only is experiment/testing good product Sample.