底座塑料注射模具设计 大学论文.doc

底座塑料注射模具设计 系 别 机械工程系 专 业 机械设计制造及其自动化 班 级 B842132 学 号 26 姓 名 吴重志 指导教师 负责教师 沈阳航空航天大学北方科技学院 2012年6月摘 要 我国模具工业近几年有很大的进展，注塑成型模具应用越来越广泛，模具CAD/CAM技术的应用水平也上了一个新台阶，但和国外相比仍有较大差距bstract The mold industry has been growing rapidly in china in recent years .The injection mold is widely used in the plastic industry ,the mold CAD/CAM technology apply level is growing too .But comparing with the foreign, it still has a long distance. So, it is good for the developing of the mold industry in china through improving the mold design. This paper introduces the mold design of the internal printer bracket .This design is on considering the excellent molding tool structure, arranging a reasonable mold hole ,adopting to asectional mole hold , It can lower the process of molding tool consumedly ,and can raise the molding tool spare parts compatibility ,also simplified the maintain of molding tool .Beside ,the aspect of designed in the cooling system , the adoption is in a mold hold of side carry on the cooling-off way ,can made molding tool even to cool off availably, after guaranteeing the request of plastic model in size .For the sake of the assurance plastic .while take off mold can be saftely shed off , this design adopts several poles which have different dia .it can guarantee the lift is even .this design adopts Pre/E software it can make the hold progress .easier and it can express the move of the mold ,reduce the mold design circle. Keyword: Inject mold ；bracket; side core; combination of mold hold; 目录 1 绪论 1 1.1塑料模具工业发展趋势 1 1.2塑料模具分类 1 1.2.1注塑成型模具 2 2 塑件材料与结构分析 3 2.1 塑件材料及材料的成型特性 3 2.1.1塑件材料选择 3 2.1.2物理化学性能 4 2.1.3力学和电气性能 5 2.1.4热性能 5 2.1.5 ABS的成型条件 6 2.2塑件结构分析 7 2.2.1塑件的几何形状 7 2.2.2塑件分析 8 3 注塑机与注塑模的关系 9 3.1注塑机的选择 9 3.2注塑机的主要参数 9 3.3注塑机的参数校核 10 3.4对注塑机进行调整 12 4 浇注系统 13 4.1浇注系统 13 4.1.1浇注系统设计总则 13 4.2流道设计 13 4.2.1主流道的设计 14 4.2.2冷料井设计 14 4.2.3分流道的设计 14 4.3浇口设计 15 4.3.1浇口位置的选择与数目 15 5 成型零部件 17 5.1成型零部件设计 17 5.1.1分型面的设计 17 5.1.2排气系统的设