模具设计专业精品毕业论文--手机后盖I塑料成型工艺及模具设计.doc

PAGE 第 PAGE II页 摘 要 本文分析了手机后盖塑件的成型特点，对模具结构各工艺参数，包括锁模力、流道截面尺寸等模具参数的进行了计算校核，设计了一副一模两腔、单分型面的，带有斜顶针以及斜导柱侧向抽芯机构的潜伏式浇口注射模具。该模具的关键是解决分型面的选择、侧抽芯结构的设计、潜伏式浇口位置确定、冷却系统的布局、塑件浇注系统布局等问题，以及在实现这些功能的情况下，如何使模具有效而可靠的运动。同时，并通过Moldflow模拟分析软件对变形、填充、浇口、排气、冷却、压力和注射成型时间等参数进行分析和优化，预测产品在成型过程中可能出现的问题。 关键词：手机后盖；注射模具；一模两腔；单分型面；Moldflow Abstract This paper analyzes the mobile phone back cover I molding of plastic parts characteristics, process parameters on the mold structure, including the clamping force, such as mold flow section size parameters were calculated check, designed a injection mold, with one-mode two-cavity, single-classification surface, inclined thimble and oblique guide pin lateral core-pulling mechanism and formed by the subsurface gate. The key is to solve the mold parting surface of choice, side core of the structure, the subsurface gate location determine the layout of the cooling system, plastic casting system layout and other issues, as well as in the realization of this function, how to mold an effective and reliable movement. At the same time, and through Moldflow simulation software on the deformation, filling, gate, exhaust, cooling, pressure and time parameters of injection molding analysis and optimization, forecast products in the molding process problems that may arise. Key words: Mobile phone back cover I; Injection mold; A two-cavity mold; Single sub-surface; Moldflow 第 PAGE III页 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc294559850 前 言 PAGEREF _Toc294559850 \h 1 HYPERLINK \l _Toc294559851 第一章 绪论 PAGEREF _Toc294559851 \h 2 HYPERLINK \l _Toc294559852 1.1 模具工业在国民生产中的作用 PAGEREF _Toc294559852 \h 2 HYPERLINK \l _Toc294559853 1.2 塑料模具工业的现状 PAGEREF _Toc294559853 \h 2 HYPERLINK \l _Toc294559854 1.3塑料模具工业的发展趋势 PAGEREF _Toc294559854 \h 3 HYPERLINK \l _Toc294559855 第二章 塑件的成型工艺性分析 PAGEREF _Toc294559855 \h 5 HYPERLINK \l _Toc294559856 2.1 塑件材料的选用与性能分析 PAGEREF _Toc2945598