Shanghai Daoqin Plastics Co., Ltd.

1-1 计算 machine engineering analysis machine design (Computer-Aided Design, CAD) is application machine 协助进行创造, design, 修改, analysis, and most 佳化一 design technology. machine engineering analysis (Computer-Aided Engineering, CAE) is application machine analysis CAD几何模 type material issues technology, can let design 者进行仿 true research product is, 进一步改良 or most design. currently in engineering use upper, comparison formed CAE technology field/area 包括: structure force analysis, analysis, analysis, 流体流场 analysis, hot analysis, electrical magnetic analysis, machine 构运动 analysis, plastics injection shot formed 形模流 analysis and other and other. has application CAE, can in 建立原 type front or rear function: ․协助 design more (design revision) ․协助 troubleshooting difficult (trouble-shooting) ․累积 Knowledge experience, system 化整理Know-how, design 准则(design criteria)CAE use 近似 数 value methods (numerical methods) 计算求 understanding, is 传统 数学求 understanding. value methods can solution many in pure 数学 无 method understanding issues, application versus 当广泛. is value methods application many tips/techniques, combined use machine 进行计算, 而计算 machine speed degree, inner 存 数 amount and method good bad 就关系 to value methods efficiency and formed 败. generally CAE soft parts 之架构 can separation is large separation: front device (pre-processor), understanding device (solver) and rear device (post-processor). front device is 建立几何模 type, 切割网格元素 and 节点, setting type type and material 系数, setting conditions and other. understanding device front device 结果档, according to conditions, use value methods understanding 答案. rear device will understanding rear a large amount of data has 规则 处理*** machine 接口图形, made as 动画以方便 use analysis 判读答案. is 便利建构2D or 3D模 type, many CAE soft parts provide CAD function, 方便建构模 type. or provide CAD接口, will 2D or 3D CAD图文 parts 直接汇入CAE soft parts, again 进行挑面 and 网格切割, 以便执行 analysis 模拟. application CAE soft parts must attention/notes to its analysis 结果未必 can separation heavy has issues, its application focus/key point in has efficiency for issues can solutions, 以争取 improvement issues 时效. experience ＝＞ Knowledge ＝＞ 实验 ratio for ＝＞ quality (Q), cost (C), 交期(D) CAE工 tool ＝＞ application CAE工 tool 时, must separation understanding its inner and type made, separation true analysis and made 程 差异, 才不至于 for analysis degree 判读. 据估计, full application CAE technology ratio/proportion 仅15% left right, still has large development 空间. effect/influence CAE technology 推广 主因 has 三: ․ analysis property. ․ related technology 人员 养 formed. ․ technology use easy property. 而CAE模拟 analysis main/primary 误差 源包括: ․理论模式— material phenomenon, material material property. ․数 value understanding method (numerical Solver) ․几何模 type (geometry model) ․错误 输入 data 1-2 plastics injection shot formed plastics products its material property 质, applications and formed product appearance 特征而 development various processing methods, 例如押出 formed 形(extrusion), 共押出 formed 形(co-extrusion), injection shot formed 形(injection molding), bag formed 形(blown film), bottle formed 形(blow molding), hot pressure formed 形(thermoforming), pressure formed 形(calendering molding), foaming formed 形(Foam molding), formed 形(rotational molding), gas 体辅助 injection shot formed 形(gas-assisted injection molding) and other and other. 　　 plastics injection shot formed 形(injection molding) is will melt plastics material pressure 挤进入模穴, made as design 形状之塑 parts 一 循 ring made 程. injection shot formed made according to use plastics has different, thermoplastic property plastics must will 射进模穴 high temperature plastics material cooling 以定形, hot solid property plastics must chemical reaction solid 化定形. injection shot formed is amount design complex, dimensions 精良 塑 parts most and most more processing methods. according to weight 计算, large 约32% plastics using/adopting injection shot formed processing. injection shot formed production parts usually must a small amount of processing ／组 combined, 甚至不 need processing ／组 combined. remove used for thermoplastic property plastics, hot solid property plastics outer, injection shot formed can used for add strong/high fiber, 陶瓷材 material, powder metal polymer formed 形. 　　 injection shot machine from 1870 year 代初期问世以, more heavy large 改良, main/primary 里程碑包括回转式 screw (reciprocating screw) injection shot machine 发明, various substitute/replace processing made 程 发明, and parts machine design and manufacturing application. especially is 回转式 screw injection shot machine 发明, more for/regarding thermoplastic property plastics injection shot formed more property and production force formed revolutionary property impact. injection shot machine, remove control system and machine function has significantly improvement outer, from 柱塞式 machine 构改变 is 回转式 screw is injection shot formed machine most main/primary development. 柱塞式 injection shot machine essence upper tool has simple color, is pure hot 传导缓 slow add hot plastics, make its and rate large large to made. 回转式 injection shot machine screw 旋转运动 造 formed scratch hot can speed uniform will plastics material 塑化, and, can 像柱塞式 injection shot machine generally toward front screw, injection shot 熔胶. 图1-1 is 回转式 screw injection shot machine 示意图. injection shot formed made most 初仅仅应 used for thermoplastic property plastics, 随 人 type for/regarding material property understanding, formed equipment 改良, and industrial upper demand and other factors, make injection shot formed made large large expand application scope. 　　 in 二十几 year, many new development injection shot formed technology used for tool has 特殊特征 design and especially material parts, make injection shot formed parts design ratio upper more tool has structure more property and degree. this R&D substitute/replace made 程包括: Ÿ formed 形（co-injection molding, also is 三明治 formed 形）Ÿ core formed 形（fusible core injection molding）Ÿ gas injection shot formed 形（gas-assisted injection molding）Ÿ injection shot pressure shrink formed 形（injection-compression molding）Ÿ injection shot formed 形（lamellar, or microlayer, injection molding）Ÿ active material injection shot formed 形（live-feed injection molding）Ÿ low pressure injection shot formed 形（low-pressure injection molding）Ÿ injection shot formed 形（push-pull injection molding）Ÿ reaction property injection shot formed 形（reactive molding）Ÿ structure foaming injection shot formed 形（structure foam injection molding）Ÿ film formed 形（thin-wall molding）　　因 is injection shot formed 形 广泛 application and its tool has outlook/prospects future, made 程 计算 machine true from 早期 均一配置, 模穴充填 experience 估算演进 to can rear 充填行 is, reaction force 学, and different material or different versus 态之仿 true complex 程序. market upper analysis soft parts provide 改变塑 parts design, injection molding parts mold design, and made conditions most and other CAE function. 1-3 模流 analysis and thin housing/shell plastics injection shot formed 形之模流 analysis application quality 守恒, amount 守恒, can amount 守恒方程式, combined polymer/macromolecule material 流变理论 and value understanding method 建立 一 sleeve/set plastics injection shot formed hot force and 充填／ holding pressure is 模式, 经由人 property 化接口 显示, 以获知 plastics in inner speed degree, force, pressure, temperature degree and other parameters distribution, parts cooling solid and warpage deformation is, and can can 进一步 discussion formed parameters and injection molding parts mold design parameters and other 关系. upper, analysis can engineering 师一窥 plastics formed product design, injection molding parts mold design, and formed conditions 奥秘, its can 够帮助生手迅 speed experience, 协助老手找出 can can by factors. application analysis technology can shrink decrease mold trial time, mold opening cost and 资源, improvement product quality, shrink short product upper 市 准备 cycle, reduce defect rate. in CAE field/area, plastics injection shot analysis already in specific formed 效, injection shot formed 形业者 obtain versus 当完整 solutions. plastics injection shot analysis 需 专业 Knowledge 包括: ․材 material features — plastics material and material property 质, injection molding parts mold material and cooling agent and other related Knowledge. ․ design specification — product design and injection molding parts mold design, can 参考材 material 供货商 provide design 准则. ․ formed conditions — plastics or polymer/macromolecule processing Knowledge and 现场实务.