香皂盒注塑模具设计.pdf

三门峡职业技术学院毕业设计 摘 要 塑料是以合成树脂 （高分子聚合物）为基体的固体材料。塑料有很多优良的 性能：成型收缩性、流动性、相容性、可塑性等等，这些优点使它广泛的应用到 我们的生活中。在今天这个高科技发达的社会，塑料成型技术的快速发展，新型 工艺的不断改进，使越来越多的塑料制品应用到各行各业。注射成形是成形热塑 件的主要方法，因此应用范围很广。 注射成形是把塑料原料放入料筒中经过加热熔化，使之成为高黏度的流体， 用柱塞或螺杆作为加压工具，使熔体通过喷嘴以较高压力注入模具的型腔中，经 过冷却、凝固阶段，而后从模具中脱出，成为塑料制品。 本产品是日常生活用品塑料香皂盒，且实用性强。该产品设计为大批量生产， 故设计的模具要有较高的注塑效率，为了提高生产效率，降低成本，塑件采取一 模四腔非平衡布置，浇注系统采用侧浇口成形，推出形式为推件板推出机构完成 塑件的推出。塑件的工艺性能要求注塑模中有冷却系统，因此在模具设计中也进 行了设计。本次的设计查阅了大量的专业资料和书籍，丰富了设计过程。 关键词：注射成型，侧浇口，型芯 1 三门峡职业技术学院毕业设计 目录 摘要 ·············································1 前言····················································4 1、塑件工艺分析 ······································5 1.1.1塑料分析····················5 1.1.2塑料材料的对比·················6 1.1.3选用塑料材料 ··················7 1.2塑件材料成型工艺参数确定 2.注塑机的选用 ············ ·····9 3、模具结构设计及尺寸计算 ··············11 3.1、行腔尺寸计算 ··················12 3.1.1型腔径向尺寸计算···············12 3.1.2 型腔深度尺寸计算···············13 3.2.2 型芯高度尺寸计算·····························15 3.3、选择浇注系统··································15 3.31、主流道的设计 ·································15 4、模具加热冷却系统的确定···································20 4.1、冷却水体积流量的确定··························20 4.2、冷却水的表面传热系数@的确定···················23 4.3、冷却回路所需的总面积计算 ······················24 4.4、冷却回路的总长度的计算 ························24 4.5、冷却水回路的布置 ······························25 5、模具结构设计 ····································26 2 三门峡职业技术学院毕业设计 5.1、塑件成型位置及分型面选择 ······················26 5.2、型腔数的确定··································27 5.3、模具推出机构结构设计 ··························27 5.4、推出机构的设计 ································28 5.5、模具排气设计 ··································28 6、工艺参数的校核·