张紧轮注塑模设计+CAD图纸
毕业论文关键词：张紧轮；注塑模设计；CAD/CAM
Injection Mold Design of Tensioning Wheel
Abstract: Injection molding is one or multiple cavity, the injection device make molten plastics be full of the cavity make use of the pressure, where it cools and hardens to the configuration of the mold cavity, then we get the product. Injection molding production and level has been developing rapidly in recent years, has been widely used in all kinds of plastic products processing. Injection molding are usually made of molding parts, pouring system, guiding system, parting core-pulling mechanism, launch mechanism, exhaust system, and mold temperature adjusting system. First of all, the material properties of plastic parts are analyzed in detail, then the injection molding principle has carried on the narration, finally introduces of the six major components of the injection molding design process has been made.
Key words: tensioning wheel; Injection mold design; CAD/CAM
目 录
1 绪论 1
2 塑件的分析 2
2.1 塑件技术要求分析 2
2.1.1 塑件的几何形状 2
2.1.2 塑件的工艺结构 2
2.2 塑料成型特性 3
2.2.1 注塑成型工艺参数 3
2.2.2 注塑成型特点 4
2.2.3 注塑成型设备 5
2.2.4注塑机结构组成 5
2.3 注射成型条件 5
3 模具型腔的设计 6
3.1 型腔数目的确定 6
3.2 注射机的选择 6
3.2.1 额定注射量 6
3.2.2 注塑机的校核 7
3.2.3 成型腔数的确定 8
3.2.4 合模导向机构设计 9
3.3 分型面的选择 9
3.4 脱模斜度 11
3.5 成型零件的设计 11
3.6 型腔及型芯尺寸计算 12
3.6.1 型腔的尺寸计算 12
3.6.2 型芯尺寸的计算 13
3.6.3 型芯高度的计算 14
3.7 排气槽的设计 15
3.8 型腔的强度校核 15
3.8.1 材料选择 15
3.8.2 强度校核 15
4 浇注系统的设计 17
4.1 浇注系统的分析 17
4.2 主浇道的设计 17
4.3 分流道的设计 18
4.4 浇口的设计 18
4.5 冷料井 18
5 脱模机构的设计 19
5.1脱内螺纹机构的设计 19
5.2 顶杆位置 19
5.3 斜推杆的设计要点 19