矿泉水饮料瓶盖注射模具及成型零件加工工艺设计
[摘要] 本设计是对给定的材料为PP小尺寸，一般精度的矿泉水饮料瓶盖塑
件进行模具设计。在综合研究了经济性、零件的成型工艺以及复杂性等诸多因素的基础上进行成型与工艺的分析与计算。文中还对注塑模具成型零件和其他相关零件的选择原则及选择方法进行了说明。期间借鉴了与塑料模具有关的文献再加上翻阅各种指导书籍，并通过大量的计算以确定模具的结构和尺寸，还在指导老师的悉心关怀和耐心指导下进行多次的反复修改，最终画出了装配图和零件图。
最终确定矿泉水饮料瓶盖塑件的设计方案，主要包其注塑模的设计的过程、以及注塑模主要零部件的设计过程等。
[关键词]注塑模具设计；模具结构；塑料瓶盖
矿泉水饮料瓶盖注射模具及成型零件加工工艺设计
Abstract
This design is for a given material for PP small size, the general accuracy of the charger shell plastic parts for mold design. Within consideration of the economy, parts of the molding technology and complexity, and many other factors in the molding process on the basis of the analysis and calculation. It also of injection mold shaping parts, and other related parts to illustrate the selection principle and selection method. During to refer to a lot of useful information related to injection mold and leaf through all kinds of manual, And through calculation to determine the mold structure and size, Through continuous calculation and modification, And in guiding the teacher's careful care under the guidance and patience to constantly modify again and again, Finally the sure to draw the assembly drawing and part drawing.
Make sure the design of the charger shell, namely the mold with one module and two cavities, side core-pulling design scheme. Then focuses on the solution, this paper mainly includes the side core-pulling of plastic parts and injection mold design process, key points of injection mold design of main components.
Key words: Injection mold design; The mold structure; Plastic bottle cap
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矿泉水饮料瓶盖注射模具及成型零件加工工艺设计
目录
1 概述.................................................................1 1.1 课题来源...........................................................1 1.2 课题的研究目的.....................................................1 2 塑件结构工艺性分析...................................................3 2.1 塑件造型...........................................................3 2.2塑件分析 ...........................................................4 2.2.1.塑件设计要求.....................................................4 2.2.2 塑件结构分析.....................................................4 2.2.3 脱模斜度.........................................................4 2.3 塑件原材料分析.....................................................5 2.3.1 PP材料特性 ......................................................5 2.3.2 PP塑料主要用途 ..................................................5 2.3.3 塑料材料成型性能.................................................5 2.3.4 PP成型温度条件 ..................................................6 2.3.5. 塑件的公差与表面质量............................................7 3 拟定注塑模具结构.....................................................8 3.1 分型面的确定.......................................................8 3.2型腔数目的确定 .....................................................8 3.3 拟选注塑机型号.....................................................9 3.3.1 注射量的计算.....................................................9 3.3.2 选择注塑机......................................................10 4 注塑机相关参数的校核................................................11 4.1最大注射量的校核 ..................................................11 4.2注射压力的校核 ....................................................11 4.3锁模力的校核 ......................................................11
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矿泉水饮料瓶盖注射模具及成型零件加工工艺设计
4.4注射模安装尺寸的校核 ..............................................12 5 浇注系统的设计......................................................14 5.1主流道 ............................................................14 5.2分流道 ............................................................14 5.3浇口的设计 ........................................................15 5.4 浇注系统的平衡....................................................16 6 温度调节系统的设计..................................................17 7 结构零部件的设计....................................................18 7.1成型零件的结构设计及计算 ..........................................19 7.1.1凹模的结构设计（型腔） ..........................................19 7.1.2凸模的结构设计（型芯） ..........................................19 7.2成型零件结构的尺寸计算 ............................................20 7.2.1 型腔（凹模）的尺寸计算..........................................21 7.2.2 型芯（凸模）的尺寸计算..........................................22 7.3 动定模板的长、宽尺寸的确定........................................23 7.4定模板和动模板厚度的确定 ..........................................23 7.5 模具厚度尺寸的选定................................................23 8 矿泉水饮料瓶盖的注塑模拟分析........................................26 8．1 CAE技术在注射模具中的应用 .......................................26 8．2基于 Moldflow 的注塑工艺模拟 .....................................26 8.2.1Moldflow在注塑模设计中的作用 ....................................26 8.2.2 Moldflow的模流模块分析步骤 .....................................26 8．3 应用 moldflow进行矿泉水饮料瓶盖注射阶段分析 .....................27 8.3.1 几何建模.......................................................27 8.3.2 网格划分........................................................27 8.3.3 浇口位置及数量的确定............................................28 8.3.4 材料设置........................................................28 8.3.5注塑条件设置 ....................................................28
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矿泉水饮料瓶盖注射模具及成型零件加工工艺设计
8．4模拟结果 .........................................................29 8.4.1充填时间 ........................................................29 8.4.2 压力分布........................................................30 8.4.3体积温度分布 ....................................................31 8.4.4 熔接痕..........................................................32 8.4.5气泡 ............................................................33 8.4.6剪切应力分布 ....................................................34 8.4.7剪切速率 ........................................................35 8.4.8锁模力 ..........................................................36 8.4.9翘曲分析 ........................................................37 8.5 总结..............................................................37 致谢语................................................................38 参考文献..............................................................39
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矿泉水饮料瓶盖注射模具及成型零件加工工艺设计
