Abstract

Flange elbow injection mold is an important part of the mold industry，which largely reflects the industrial level of a country. Plastic is not used in today’s world，so plastic mold has a great development，especially injection mold.

This paper designs the injection mould of flange elbow. It is required to determine the structure form of the mould through the analysis of the injection molded parts，and to calculate the relevant dimensions，including parting surface selection，clear core，gating system type；calculate the working size of concave and punch parts，calculate cavity wall thickness，bottom plate thickness；determine injection molding machine type，calculate and determine the main parts and dimensions of the mould，carry out the 3D model design of the mould and draw the assembly drawing of the mould.

This design introduces the design of each system in the flange elbow die，which includes the design of pouring system，the design of forming parts，the design of guiding mechanism，the design of launching mechanism，the design of temperature regulating system，and the design of exhaust system. The 3D model is built with proe and the cad assembly drawing is derived.

Keywords: flange elbow；die design；arc core pulling；side core pulling；3D model drawing

目  录

摘  要 I

Abstract II

1绪论 1

1.1课题的来源及意义 1

1.2国内外发展状况 2

1.2.1注塑模技术发展现状 2

1.2.2注塑模技术的发展趋势 2

1.2.3国内外模具工业比较 3

1.3研究主要内容 4

2塑件及浇筑系统 5

2.1模具的工作原理 5

2.2塑件成型成型工艺分析 5

2.2.1塑件的分析 5

2.2.2 ABS的性能分析 6

2.2.3 ABS的注射成型及工艺参数 6

2.3拟定模具的结构形式 7

2.3.1分型面位置的确定 7

2.3.2型腔数量和排列方式的确定 8

2.3.3注射机型号的确定 8

2.4浇注系统的设计 10

2.4.1 主流道的设计 10

2.4.2分流道的设计 11

2.4.3 浇口的设计 13

2.4.4冷料穴的设计及计算 14

2.4.5校核主流道的剪切速率 14

2.5成型零件的结构设计及计算 14

2.5.1成型零件的结构设计 14

2.5.2成型零件钢材的选用 15

2.5.3成型零件工作尺寸的计算 15

3模架及其机构 16

3.1模架的选定 16

3.1.1 各模板尺寸的确定 16

3.1.2 模架各尺寸的校核 17

3.2排气槽的设计 17

3.3脱膜推出机构的设计 17

3.4抽芯机构的设计 18

3.5冷却系统的设计 18

3.5.1温度调节对塑件质量的影响 18

3.5.2冷却介质 19

3.5.3冷却系统的简单计算 19

3.5.4 冷却水道在动模和定模中的位置 20

总  结 21

致  谢 22

参考文献 23