手机外壳注塑模具设计及型腔仿真加工

目录

1 前言 (1)

1.1 课题意义 (1)

1.2 国内外发展现状 (1)

1.3 设计前提及主要问题 (2)

1.4 解决的主要问题和总体设计思路 (3)

1.5 预期成果和实际价值 (3)

2 总体方案论证 (4)

3 具体设计说明 (5)

3.1 塑件测绘 (5)

3.2 塑件三维实体造型 (5)

3.3 材料的选择 (6)

3.3.1制品材料 (6)

3.3.2模具材料的选择 (6)

3.4 注塑机的校核 (7)

3.4.1注塑设备的确定 (7)

3.4.2注塑机有关工艺参数的校核 (7)

3.5 分型面的设计 (9)

3.6 浇注系统设计 (10)

3.6.1浇注系统的设计原则 (10)

3.6.2主流道的设计 (10)

3.6.3分流道及其平衡布置 (11)

3.6.4浇口的设计 (11)

3.6.5冷料穴的设计 (12)

3.7 冷却系统的设计 (12)

3.7.1 在设计冷却系统时，应从多方面考虑： (13)

3.7.2冷却计算 (13)

3.7.3冷却水道在定模中的位置 (13)

3.8 顶出系统的设计 (14)

3.8.1推出机构设计 (14)

3.8.2顶出行程 (15)

3.8.3复位杆 (15)

3.8.4顶杆的形状与尺寸选择 (15)

3.8.5导向装置位置的布置 (15)

3.8.6浇注系统零件设计 (16)

3.9侧向分型与抽芯机构的设计 (16)

3.9.1侧向抽芯机构设计应注意如下要点： (16)

3.9.2抽芯距、抽拔力与斜导柱的计算 (17)

3.9.3斜导柱的设计 (17)

3.9.4滑块的设计 (17)

3.10 模架设计 (18)

3.11 凸凹模的造型 (19)

3.12 型腔加工工艺分析及加工仿真 (22)

3.12.1零件的工艺性审查 (22)

3.12.2毛坯选择 (22)

3.12.3基准选择 (22)

3.12.4拟定加工方案 (22)

3.12.5型腔数控仿真加工 (22)

4 结论 (25)

参考文献 (26)

致谢 (27)

附录 (28)

手机外壳注塑模具设计及型腔仿真加工

摘要：本课题是关于手机外壳模具的设计，主要是手机外壳注射成型模的结构设计和模具加工制造。手机的形状较为复杂，所以模具设计中要考虑的因素有很多，除考虑它的出模、分型面，还需考虑它成型的质量，表面光洁度等。所以我们设计应认真分析塑料制品的结构，寻求最佳的设计方案并选择成型设备的规格和型号。分型面的选择很重要，制件不是平直表面，分型面的选择既要考虑不影响制件表面的美观，又要达到结构要求。浇注系统的设计也很重要，在此次设计中我选点浇口，并设有冷料穴。拉料杆采用Z形，这就解决了制品出模的问题。编制塑件的模型成型工艺，并进一步对该注射模结构进行设计，编制该注射模主要零件的加工工艺，最后进行型腔仿真加工。

结构设计包括分型面、型腔布置、浇注系统、排气系统、加热冷却系统、侧向抽芯机构、顶出机构、脱模机构以及主要零部件的设计。模具加工制造运用PRO/E进行三维造型设计并对注塑模模具进行装配，对手机外壳注塑模具定模板型腔的加工工艺进行了分析，并利用Mastercam软件进行了仿真加工，其切削过程直观，切削参数得以体现，不合理的参数可以改进，能最大限度地降低能源和材料消耗，提高加工效率。此注射模设计的结构特点是点浇口形式的双分型面的注射模，是侧向抽芯。经生产验证，该模具结构设计巧妙、操作方面、使用寿命长、塑件达到技术要求。

关键词：模具设计：注塑模具；仿真加工；分型面

The design of the mobile shell mould And the simulation processing of the mold cavity

Abstract:This topic is to design the mobile shell mold, which includes the structure design mould assist designing for manufacturing, and the working process of the injection mould of the front cover of the mobile shell set were introduced. Mobile shape so complicated that the mold design has a lot of factors to be considered , in addition to its ejector pin, parting surface, it needs to consider forming the quality of surface finish, and so on. Therefore, we should carefully design the structure of plastic products, find the best design options and choose the molding equipment specifications and models. It is very important, not the straight parts surface, parting surface of choice it is necessary to consider not affect parts of the surface appearance, but also to structural requirements. Pouring system design is also important in the design of the election, pin gate cold-slag well and Z-shape pin were chosen which are solved the problem of products to die. Plastic Parts of the Process model, and further injection structure of the design, preparation of the main components of the injection-processing technology, a cavity simulation final processing.

The structure design involve parting plane, cavity layout, old systems, heating cooling systems, the side core pulling mechanism structure, prop up the organization, drawing patterns and the design process of the main work pieces. The later use PRO/E to construct carries on the three dimensional modeling and to assemble the injection mould. The processing craft of the cavity of fixed plate of the base of the mobile shell are analyzed, and the simulation process are carry out with the software of Mastercam，which can observe the geometric figure of the process of cutting