Shanghai Daoqin Plastics Co., Ltd.

　　180℃ hot water “RHCM high light injection molding ” system technology introduction:

　　RHCM high light injection molding also by is RHCM (Rapid HeatCycle Moulding), also has in industry in 如: cold hot molding, high low temperature injection molding,急 cold hot injection molding, hot temperature injection molding. high light spray coating technology and other method, currently industry in use most good most methods is using/adopting high temperature hot water add hot + water cooling,该 technology is 透 运 use 180℃ hot water will mold surface fast speed rise temperature, molding mold cavity surface temperature degree to resin plastics 玻璃转移 temperature degree (Tg – Glass TransitionTemperature) above, rear 开始进行 injection shot molding, formed mold cavity filling process rear, utilizing water (经处理) as is cooling make mold surface temperature degree speed decline, from 而改变 plastics product surface features. RHCM “ high light injection molding ” technology development already 近4 year more, is Japan. Korea 3D蒸汽无痕 injection molding technology in automotive. home appliances industry to application, is due to use add hot is using/adopting generate to mold add hot, therefore using/adopting 锅炉蒸汽 add hot methods to environmental protection and safety made, most important is using/adopting generate to mold add hot rear,蒸汽没 has method to recycling formed high cost issues,

　　RHCM high light injection molding technology and injection molding process versus ratio lower, can large large improvement product surface gloss degree, solution product surface 熔接痕 issues, for improves product surface hardness has 一定帮助. another, RHCM high light injection molding technology can application to add fiber engineering plastics in, can has solution product surface fiber exposure issues. 6 o9 Q3 j) f# F2 h$ RHCM is how to remove product surface 熔接痕1熔接痕 形 formed is 由两股 or above melt plastics in injection shot molding filling process in, melt plastics 流 波形 front in mold cavity in versus combined, if mold cavity surface temperature degree or 流体遇 combined pressure 不足, 便会造 formed combined 流端无 method full combined, formed product surface 出现熔接痕 defect; another, plastics in has add material (例如: masterbatch), in combined more 会出现 relatively is obvious Color Difference 异. however, use RHCM high light injection molding technology, let can in 每次开始进行 injection shot molding process front, mold cavity surface temperature degree fast speed improves resin plastics heat deflection temperature (HDT) above (HDT), from large large increase melt plastics in mold cavity inner flow property, decrease low melt plastics and mold cavity surface between abrasion scratch retardant force, significantly remove 传统 injection molding process product surface 熔接痕 issues. remove outer, RHCM high light injection molding technology combined engineering plastics more can production 出无痕 high gloss degree resin product, product surface appearance requirements, 而进行 二次 processing (例如: 喷漆.UV…..).

　　RHCM how to solution product surface fiber exposure issues?

　　RHCM technology 另一项 advantages is, can significantly remove add fiber modified engineering plastics product surface fiber outer issues. generally in injection molding in, glass fiber (GF) melt plastics toward toward, if in filling process in, mold cavity surface temperature degree 不足会导致 melt plastics in solid 化, glass fiber (GF) 便会出现无 method full by resin 包裹. another, glass fiber (GF) and resin plastics shrinkage features 差异, molding product cooling rear, glass fiber (GF) more easy outer product surface upper.

　　运 use RHCM high light injection molding technology, can control mold cavity surface add hot and cooling time 变化, resin plastics product surface crystallization 状态, can has remove glass fiber (GF) outer product surface effect/influence appearance property issues. Japan SONY company production PSP掌 upper machine, housing/shell is using/adopting RHCM technology reduce plastics outer housing/shell surface fiber exposure issues.

　　RHCM high light injection molding and injection molding difference:

　　1. high light material

　　 production surface quality relatively high product 时, commonly used plastics has ABS. PA. PC. PMMA. PC+ABS or 者PMMA+ABS. its in ABS hardness most low, PMMA+ABS hardness most high, can 达Ⅱ grade, 甚至2H. hardness high melt flow speed degree versus for low, flow property 变差, therefore can according to production need selection plastics product types. currently very more company R&D 出 一 specialized high light plastics material, high gloss PMMA/ABS免 spray coating material HAM8560 and other, currently product types also less.

　　3. high light mold

　　 effect/influence mold factors main/primary has mold material. mold water design. and manufacturing processing and other.

　　1). mold material

　　 need has relatively good light property. corrosion resistant property. wear resistance. hot strong/high degree. tough property. processing properties good low thermal expansion coefficient and other. its in light property. corrosion resistant property. hot strong/high degree. thermal expansion coefficient for high light mold is important. mold light property 差, surface coarse degree large, or by or injection molding has water separation 沉积,就无 method high gloss product molding; temperature degree fast speed for mold material hot strong/high degree. 膨胀系数也 has more high requirements, currently use high light mold material has Japan day metal CENA1#. Japan large NAK80 and S-STRA. ASSAB S136 or S136H(420). POLMAX and other 镜面. high wear resistant. resistant mold 钢, 当然也 has comparison low high light mold use P20 常规 mold material. day metal development ultra- large type plastics molding mold material use CENA1#, more is is high light 镜面 改良 product, its comprehensive property can good, wear resistance, processing property, tough property, corrosion resistant property relatively good, is high light molding mold most selection 之一.

　　2) mold water 道

　　 is ensure mold surface temperature degree uniform property and fast speed 传导, mold internal must combined water 道 配 combined RHCM high light injection molding system fast speed rise temperature and fast speed drop temperature demand. mold water 道开设 good bad is effect/influence molding cycle important 因数之一. injection molding mold water generally using/adopting water 道(water products surface relatively 远, water and water between relatively large), this type of water design method meet/satisfy high light injection molding mold surface temperature degree uniform and fast speed hot amount 传导, high light injection molding mold water 道开设 has types: 1. product structure simple can using/adopting water 道, through processing achieve (water products surface relatively non 常近, water and water between 距离也 comparison small, 2. product structure complex can using/adopting delamination structure or other methods will water 道布置距 mold surface 恒定距离 meet/satisfy mold surface temperature degree uniform and fast speed hot amount 传导. delamination structure type and type 芯由两部 separation formed: upper is thick degree basic uniform type products, positive processing mold molding 面, processing uniform semi water 道, lower is 一 衬 sheet/plate, has for upper products combined 面, processing uniform semi water 道, upper lower combined formed mold water 道

　　 above types methods water can meet/satisfy high light injection molding mold surface hot amount fast speed and uniform property, can in short time inner uniform fast speed rise high and reduce mold surface temperature degree. make high light injection molding molding cycle ratio injection molding cycle short, achieve fast speed ring molding, above types structure water 道: its in delamination structure mold cost comparison high, use lifespan versus for shrink short,

　　3) mold 接头:

　　 due to mold internal water 道 介质 is in 30℃---180℃ between 不断切换, therefore mold external 接头必 must using/adopting 不锈钢 接头

　　4)感 temperature 线:

　　 mold temperature 线 安装(generally using/adopting 1.6 K type hot electrical 偶,直接安装 in 模芯部 separation strip/profile water in 间).

　　4. high light injection molding mold temperature degree control system:

　　 from certain 方面而言, high light injection molding most key/critical is mold temperature degree control system, due to high light injection molding and generally injection molding most large difference is in mold temperature degree control,而 for injection molding machine requirements high, high light injection molding mold temperature control system generally is high light mold temperature machine, and general purpose injection molding machine combined, in injection molding machine 射胶. ejection.开 clamping process 协调动 as.

　　卡塞尔 machine high light injection molding mold temperature control system tool has 95% hot water recycling function, energy saving obvious, active machine design can 随时移动配 combined different machine use. 移动式 design as combined 10.4″ Mitsubishi liquid true color device.

　　 summary:

　　RHCM high light injection molding technology currently in inner belongs to 一项先进 production process. due to this technology large large improvement products surface quality and surface strong/high degree, can rear spray coating or and other process, 既保护 ring and as 人员 人身健康, also decrease/reduce process process/workflow, 省 昂贵 二次 processing use, in large degree reduce production cost meanwhile, can and material.

　　随 plastics parts application day 趋广泛, and for/regarding environmental protection, safety 意识逐渐 increase high, RHCM high light injection molding technology will formed is future injection molding technology field/area also 一颗灿烂 new 星.