Shanghai Daoqin Plastics Co., Ltd.

enterprise tube/pipe is comprehensive property 科学, meanwhile is 一门领导艺术. enterprise is is 盈利,当然 most is need let enterprise obtain 利益, let shareholder obtain 利益, let obtain 利益,且 let obtain 利益, meanwhile let obtain 利益. enterprise through product and and market 取 联系,客户 for manufacturing 商, supply most is product quality, price, 交货期 and 服务, this most also is enterprise profit and 社会效益. injection molding factory tube/pipe 理 直接 effect/influence 企 业 经济效益,现就 below/following several 方面谈 as 者 实践 and toward 同行学习 体会.

1 　 combined control ring time belt/tape plastics injection formed is hot plastics formed main/primary methods. injection formed full process 由塑化 process,充模 process, cooling solid process and demolding process formed,每进行 one-time ring,就完 formed one-time formed 形. according to mold cavity how much production 出一 甚至数十 plastics parts. ring time 准确估计 can formed 一笔生意 formed or more more profit. injection formed plastics raw materials injection machine material in,经 add hot 熔化, make formed is high viscosity 流体, through injection machine and screw as is add pressure tool,经 nozzle make melt relatively high pressure (约 25M Pa～80 M Pa) mold type in,而 rear cooling and solid stage/phase, most from mold in 脱出, formed is plastics products. production ring cycle machine type ring time versus add 而. mold 打开/ 闭 combined time time usually by is machine “ dry ring " time “drycycle"(time). this time 取决于 machine clamping force (Clampi ngton nage) and mold complex degree. 例如, has good several mold slip block machine large type machine ratio has simple mold small machine, dry ring time versus for long. dry ring time long short, usually in 实际运转 in 进行试测, very easy to time long short, its value generally is 4～1 5 秒.

injection time or time process is injection formed in most main/primary process, melt injection machine nozzle rear,进入 mold type 腔,排出 type inner gas,并充满 type 腔,然 rear pressure upper rise, make melt density increase,充实 type 腔 各部位. time is use full mold cavity time,充填 time will plastics mold time and in gate full front will plastics pressure time. this time usually 占总循 ring time small separation, it main/primary injection amount and plastics parts 几何形状决定, its value generally is 2 秒.

cooling time thermoplastic property plastics injection formed process is hot process,即塑化 (add hot), solid formed (dispersion hot). cooling time large small is amount in most difficult ring. this time can is ring 50 % ～90 %,因而 it separation important. due to injection molding product complex property and hot 传导公式 analysis cooling time difficult property,实际 upper cooling time can as very good forecast. design methods already use machine design (CAD) solution system in difficult issues and injection process hot issues.

恢复 time machine cycle most rear important issues is machine 复原准备 lower injection can force. utilizing machine property can large separation, or ring time dry ring, injection and cooling time is versus for relatively short  .

machine can can need 一 额 outer time make raw materials separation 塑化.   generally 说, most good using/adopting 需每次 injection amount low its injection can force 60 % machine. machine injection can force can use already 知 每次 injection amount and raw materials density 决定. machine made 定商们说 额定 injection can force is general purpose polystyrene (PS) (PS density is 1 is 基础.) 据一位 from injection molding 30 year outer expert 说: “我见 to very more injection molding 厂 will ring cycle ratio necessary long. let 我们 看看, ratio 如 你 certain machine ring cycle is 20 秒, decrease is 1 5 秒,你就 in machine upper more 赢 3125 % 产 amount. for 一台每 small value 30 美元 machine 说, that is year 43,00 0 美元 节余 若三班 made,每周五天 made (). has good machine, will 此节余 and versus 乘, this can is large 笔钱. therefore injection molding need has 一 针 for different product made injection, ring cycle target/goal,以取 more large 经济效益.
in production in mold is types investment has injection molding 厂本身 has mold development and manufacturing can force, has injection molding remove tool injection molding can force outer,并不 tool mold development and manufacturing can force. injection molding in 接待客户时,无论 this is product development 人员, also is 付钱 委托人,必 must need make its product production cycle in, mold is types investment,舍不 花本钱 is 不明智. mold according to different type type, quality, lifespan and 交货期均会 has different price. therefore injection molding 厂应说服客户考虑一 comprehensive indicators. for/regarding 一付不 can separation cooling mold, its 烧口不 combined 适, or its injection machine design combined 理, it 就会运转 very slow need more more repair. 例如, certain parts mold can can 会花 200,000 元 (人民币) formed cold runner (Co ld - runner mold), cycle is 40 秒. mold can 花 23 0,00 0 元 (人民币) formed hot runner (hot run ner mold), cycle is 2 5 秒, also use for its heavy new abrasion and 处理. ring time injection machine effect/influence. has mold belt/tape ezecto r p in s() can 花 100,0 00 元 (人民币) formed. belt/tape demolding sheet/plate (St rip per plate) mold 会花 12 5,0 00 元 (人民币),但循 ring cycle short very more.
injection molding in 接待客户时请 attention/notes, for mold 不甚熟悉 客户 说,客户 very less need 一 指定 mold design. injection molding 厂应尽 amount good 此项工 as,即明确指定一 can most high as mold,即 make in 开始时花费 relatively large,但却省 令人 in the future issues. 当然,总 technology property assessment also is need 由客户拿主意.
design need will gate and runner 定 太 small injection in gate is melt 直接进入 type 腔 通路. its 位置, dimensions, 形状会 直接 effect/influence parts inner in amount and appearance quality. design 不当,会造 formed defect, 触接痕, bubbles, warpage deformation, internal stress large and density and other 弊病. injection molding expert in 现场见 to small runner and gate. small gate made amount, in raw materials by 注出时导致额 outer hot 堆积,因而会需 use relatively long time cooling make a large amount of raw materials separation understanding.
USA 一位现场 injection molding expert 建议, mold design basic requirements is runner and gate dimensions is versus thick 60 % 而 non Common to it can according to products weight and thick dimensions 关系曲线 选定 runner 直径. 当然也 need according to different gate type 式而定. for thin parts, gate 横截面 wide and high usually is runner 横截面 50 %～100 %.
need mold gas function injection is 先闭模然 rear material, in process in must type inner gas full troubleshooting,才 can make 充填完 full. therefore requirements mold in gas must fast speed 逸出以便 plastics fast speed to 横腔 各 角落. in solution issues expert 说, has issues mold 几乎总 is has 足够 排 gas function. made 模者定出 排 gas less need is separation (Parti ng lin g 20 %,而不 is 随便开逸 gas) 路. for/regarding flow property good resin,既 can gas also 不发生 flash most small 间隙极限 value is 0102m m. gas 孔应位于 most has 效 位置, usually in mold cavity most rear by 填满 部位. can in separation type combined use 200 目 carbon silicon abrasion material as water force 喷砂处理,以 ensure gas. runner 也 排 gas, deep degree less is separation 模线排 gas 孔 两倍. 顶横杆也 can has gas 孔以帮助空 gas 逸出. in high speed injection molding in using/adopting true gas 避免发生 usually gas issues.
熔 made temperature degree need high usually in mold gate and runner dimensions for parts 说不够 时候, injection molding is 不断供 to raw materials hot amount make parts separation or more fast 填满. parts molding saturated can 归因于 flow 不畅, therefore injection molding hot amount add 足以改进 flow property can. due to flow 不畅, hot amount in 注口堆积 more more, raw materials 因而也常常 in ratio material high temperature 计 示 temperature degree high more lower processing. certain injection molding expert 说, important is in or gate outer non material inner temperature. in 此位置没 has high temperature 计,试 不 use mold,

will raw materials injection shot,测 its export temperature degree,你会 for that upper rise temperature degree to 惊讶. high temperature degree lower processing raw materials has what rear 果?
若注口处 temperature degree ratio manufacturing 商规定 high, plastics separation understanding. high temperature degree and long add hot time lower parts surface coarse has 纹, or 棱角不明. heavy add hot generate color strip/profile 纹, 黑 点, has in 缺口敏感 区 (no tch2 sen sitive area easy 碎. high temperature also 会导致部 parts warpage deformation, for 此) issues injection molding through increase ring time 弥补,此时 will mold formed high grade anti warpage tool use. can can 话,建议开 large gate and runner,逐步 reduce temperature degree, increase injection pressure make parts molding saturated 满. control combined temperature degree injection molding belt/tape relatively good quality and relatively short cycle.
raw materials need drying plastics formed processing in use plastics tube/pipe use new material also is material,都会 different degree 受潮. 而一旦潮 gas injection molding formed process, will 会直接 effect/influence to injection molding parts quality,如疵点, property and easy formed and other. plastics is 否吸潮 can separation is large type,一 type is non wet property plastics, outer wet gas 仅吸附 in plastics surface,如 polystyrene (PS) (PS) and polyolefin (PO) and other 均 此 type resin. for non wet property plastics,放 in drying in, use hot 风吹, make surface wet gas 蒸发,并驱动 drying device. type is wet property plastics, this type of plastics will wet gas plastics internal,形 formed separation 子键. this type of plastics can use wet hot remove gas. many expert is, many injection molding raw materials drying 彻底, especially is that wet property raw materials nylon (n ylon), polycarbonate (PC) (Pol y2 carbonate) and thermoplastic polyester (t hermopaastic Polyecters). make already by long time drying,但 in molding machine front is still maintain drying?吸 wet property plastics use wet drying device drying. wet drying device use low 达 - 40°F drying hot absorption internal gas. has expert 经常发问, raw materials is in remove wet 空间里吗? using/adopting is what drying machine? is remove wet drying machine is, drying raw materials in to 达底部 front heavy new water separation. has injection molding in material in use nitrogen gas maintain gas drying.
部 parts formed rear as rear manufacturing 厂商应 attention/notes provide 客户满意 一流 product, for/regarding injection molding parts appearance, color, coarse degree, strong/high degree, dimensions degree and other quality issues 必需引起充 separation attention/notes and heavy 视. for/regarding coarse degree requirements high parts in dry ring in production,操 as 工必需 belt/tape good 洁净 手 sleeve/set, 绝不允许油污,手印 and other product, for/regarding surface coarse degree requirements low parts 应

该仔 fine good, for shallow color or transparent plastics products need belt/tape good sleeve/set,仔 fine 检查, will products polyethylene (PE) plastics bag in, use 布包起, or in sheet/plate upper. attention/notes, small light 放. in 装箱时完 full according to packaging requirements and packaging as 业指示书进行操 as,以 ensure amount and 搬运运输 process in 免遭碰撞 and force 猛,确实 ensure quality. is ensure formed rear parts dimensions degree, remove mold and injection molding process ensure outer, for injection molding parts also as rear 处理, has need in water and other in cooling, has product rear in specialized tool in 定形,以 ensure injection molding parts and dimensions degree. need 经常教育 and training injection molding as 工,决不 can 漫不经心 for product,以免 make already as force 付之东流.
injection molding for equipment and mold 做常规 anti property maintenance tool has production experience and Knowledge expert, need in 现场看一眼 machine,就 can will injection molding process in issues very fast diagnosis 出. machine is maintenance good? sheet/plate upper has liquid pressure 油迹吗? injection molding factory 必需经常 for injection molding as 人员进行操 as and safety training, for/regarding 断开 插 base/seat, 接线箱, and or water phenomenon 必需予以 and 时处理,任何 non positive 常运行 conditions and factors 都会直接 effect/influence to injection molding product quality,甚至会直接 effect/influence to lower mono 决心. for/regarding 接受客户 belt/tape processing mono,必需充 separation attention/notes mold quality. type has loss? water tube/pipe is water clamping, mold opening and ejection is 否顺利. for/regarding mold 甚至于 for ring can hydrophobic 忽, has ring using/adopting made,若 need hydrophobic or has series parts, will effect/influence to mold and production 准备. small hydrophobic 忽导致效益 loss 失必需引起现场 tube/pipe 理人员足够 heavy 视.
injection need from in 吸取教训经常 in expert 普遍看 to, very more injection molding has true positive from to solution issues process in 受益. 他们不清楚 formed process factors versus 互关系. has expert 说,“我 solution this issues rear, rigid 跨出厂门,他们就回原位置 dry dry 事. "一 expert in solution structure 发脆部 parts process issues is will ring cycle long 一倍. that factory 经理说:“一旦 expert 离开,我们会回复 to has ring cycle. "他们不 can 承受循 ring time increase,却 also for quality issues difficult control,他们不 versus small small 修理会 for quality generate stability function. therefore as is injection molding factory and engineering technology 人员必需随时 summary factory production experience,随时修 positive 自己 错误,才 can conditions production meet/satisfy demand product and is factory 创 造 good 经济效益.