摘要：模具工业在世界各国经济发展中占有十分重要的地位，而模具技术已经成为衡量一个国家产品质量水平的重要标准。模具涉及金属工艺，机械设计，极限配合与互换性，模具工艺，涵盖范围庞大，诸多课程相互交织，是一个多学科的结合体，其复杂程度不言而喻。在日常的生活中，往往需要很多制式产品，而模具作为一种便捷的工具可以在大量的需求下短时间高效率的产生大批量的同样产品。尤其是眼下世界各国都需要大量的塑料制品，造就了塑料模具行业的飞速前进，也由传统的一些工艺渐渐地转变为由高科技控制的工艺。随着计算机技术的发展，现在可以借助诸如NX等三维设计软件中的标准化工具（注塑模向导）设计一套完整的模具，相较于传统的设计流程可将效率提高数十倍。同时这些高科技的软件技术也会使得整个设计过程更加精确，会通过一些功能去对要设计的产品进行一些分析，避免了完成整套设计才发现有瑕疵的问题出现。

关键词： 模具工业；塑料模具；计算机辅助建模；注塑模向导

Camera Back Cover Injection Molding Process and Mold Design

Abstract: The mold industry occupies a very important position in the economic development of various countries in the world, and the mold technology has become an important standard to measure the quality level of a country's products. The mold involves a wide range of processes, including mechanical design and manufacturing, plastics, rubber processing, metal materials, casting (solidification theory), plastic processing, glass and many other disciplines and industries, is a multidisciplinary synthesis, and its complexity is obvious. In daily life, a lot of standard products are often needed, and the mold can be used as a convenient tool to generate large quantities of the same product in a short time and efficiently under a large demand. In particular, all countries in the world now need a large number of plastic products, creating a rapid progress in the plastic mold industry, but also gradually from the traditional process into a process controlled by high technology. With the development of computer technology, it is now possible to design a complete set of molds using standardized tools (injection mold guides) such as NX and other three-dimensional design software, which can improve efficiency by several dozen times compared to the traditional design flow. At the same time, these high-tech software technologies will also make the entire design process more accurate. Through some functions, it will analyze some of the products to be designed, and avoid the completion of the entire design to discover flawed problems.

Key words: Mold Industry; Plastic Mold; CAD; Mold Wizard

目  录

1 开题依据1

1.1 课题来源2

1.2 课题研究的主要内容7

1.3 选题的背景及意义7

1.4 国内外差距7

1.4.1 技术整体落后10

1.4.2 协调能力不足，装备落后12

1.4.3 供需矛盾短期难以缓解12

1.5 CAD /CAM /CAE技术在注塑模具设计上的优势7

2 塑件产品设计及材料性能分析14

2.1 塑件产品分析16

2.2 材料性能分析16

2.3 塑件材料成型性能16

2.4 注射成型工艺参数16

3 选择注射机及相关参数的校核14

3.1 概述16

3.2 型腔数量及排列方式选择16

3.3 注塑机选型16

3.3.1 注射量计算20

3.3.2 选取注塑机20

3.3.3 型腔数量及注射机有关参数的校核20

3.3.4 注射机工艺参数的校核20

4 模具设计14

4.1 分型面位置和形式的确定16

4.2 型芯和型腔的设计16

4.2.1 分型20

4.2.2 成型零件的尺寸计算20

4.3 模架的确定和标准件的选用16

4.4 侧向分型与抽芯机构的设计16

4.4.1 侧向分型与抽芯机构类型的确定20

4.4.2 斜导柱侧抽机构的设计20