Shanghai Daoqin Plastics Co., Ltd.

according to optical plastics products 图, need ensure light 源 平行 light through 该媒质时 its optical property can to 规定 漫射 and and other requirements, also need combined molding parts made as process conditions, rear in 考虑确定 injection molding parts mold structure, usually using/adopting sheet/plate 模式一模 more structure. molding parts surface coarse degree and other grade requirements very high, full using/adopting structure, mono parts processing and more 换, toward machine full design is sleeve/set structure, abrasion loss rear more 换而不 reduce assembly degree and 运动精 degree, ejection separation using/adopting toward 支柱, decrease/reduce abrasion loss, 避免溢 material, can long lifespan, using/adopting 四点支撑, 即三段四点静不定梁, can large degree reduce sheet/plate thick degree, increase rigid property, decrease/reduce degree. injection molding parts mold using/adopting or water mold temperature control system, tool has add hot and cooling speed degree fast, temperature degree degree and property small, easy control and other and other, ensure positive production injection molding parts mold can to process parameters temperature degree. using/adopting can 直接传导 to parts and sheet/plate make hot uniform, 但距离 type can 太近, 以15~20mm is 佳, from injection molding parts mold in toward external hot and dispersion hot to balanced. system is combined 理直接 effect/influence products inner in quality and appearance. system 包括主 runner, cold material 穴, separation runner and gate, it and products quality and 自动化程 degree 密切联系. runner main/primary negative 担输送熔 melt resin separation runner, degree can large, easy formed 紊流以至 generate bubbles, degree small material difficult. cold material is 储存主 runner material, can short, material easy 断, material can generate orientation function, add separation structure 不紧密故 its tensile strength low, separation cold material type 腔, products flow marks, 应取10mm left right. separation runner main/primary is will melt material stability uniform to type gate 处. gate can using/adopting 侧纪哦口 and 潜伏式 gate types 形式, gate function is will melt resin high speed high pressure type fast speed solid runner. gate for products quality effect/influence very large, gate can for type 腔, easy generate 喷射, 因喷出 high degree toward fine filament very fast cooling, make products rate very large 变化, in interface generate strong/high 烈 折射. using/adopting has 支撑导柱 自动复位 system, can combined injection function achieve more 次定出, to full production. can achieve this main/primary 取决于 injection molding parts mold structure design and made as degree. optical plastics molding injection molding parts mold, must has relatively high degree and coarse degree and other grade, also tool relatively 理想 浇注 system and gas system, this is optical plastics injection molding parts mold and generally engineering plastics use injection molding parts mold main/primary difference.