手机充电器外壳模具毕业设计

摘 要

分析了手机充电器外壳的工艺特点，介绍了手机充电器外壳上盖注射模结构

及模具的工作过程。重点介绍了手机充电器外壳注射模结构的设计方法。此手机

充电器外壳注射模设计的结构特点是点浇口形式的单分型面的注射模，模具采用

一模两腔的结构，两塑件平行放置，方向相反以便侧向抽芯。仪用热流道，可以

消除废料的产生，但流道过长加热较复杂，而且ABS塑料流动性较好易产生涎流

现象，改用PP等其它符合热流道的塑料，不仅塑性能不能满足制件功能要求，而

且增加生产成本。本设计采用嵌入式型腔结构。该结构广泛应用于中小型塑件的

模具中。加工方法可采用普通机加工、数控机床、电火花、电铸成型等方法。将

一个整体型腔嵌入到型腔固定板中，嵌入的型腔材料可用低碳钢或低碳合金钢，

渗碳淬火后抛光。该模具结构设计巧妙，操作方便，使用寿命长，塑件达到技术

要求。

关键词：手机充电器外壳，注射模，型芯，型腔

Mobile phone charger tooling design

Abstract

Has analyzed the handset battery charger outer covering craft characteristic, introduced

the handset battery charger outer covering top head injection mold structure and the mold work process. Introduced the handset battery charger outer covering injection mold structure design method with emphasis. This cell phone charger shell injection mold design of the structure is characterized by the form of points runner-alone surface of the injection mold. Die using a

two-cavity structure, two pieces of plastic placed parallel direction opposite to the lateral

extracting core. Instrument Hot Runner and eliminate waste, but the excessive heat flow is

more complicated, ABS plastics and better mobility easy to produce saliva flow, and other use of PP with Hot Runner of plastic, Not only plastic component performance can not meet the

functional requirements, and an increase in production costs. Embedded design using thecavity structure. The structure widely used in small and medium-sized plastic parts mold. Processing methods use ordinary machine, CNC machine tools, EDM, LIGA methods. Will be embedded in a cavity of a whole cavity plate, embedded in the cavity material available low-carbon or

low alloy steel, carburizing quenching after polishing. After production confirmation, this mold structural design ingenious, the ease of operation, the service life is long, models to achieve the specification.

Key words：handset battery charger outer covering injection mold slide core

目 录

1 塑件工艺分析 ......................................................... 1

1.1 塑件的结构要素 .................................................. 1

1.2 塑件尺寸公差与精度 .............................................. 2

2 模具方案的确定 ....................................................... 3

2.1 确定型腔分型面及型腔数目 ........................................ 3

2.2 型腔、型芯的结构 ................................................ 3

2.3 浇口的设计 ...................................................... 4

2.4 冷料穴的设计 .................................................... 4

3 注塑成型的准备 ....................................................... 5

3.1 注塑成型工艺简介 ................................................ 5

3.2 注塑成型工艺条件 ................................................ 6

3.3 注塑机的选择 .................................................... 8

3.3.1 注塑机简介 .............................................. 8

3.3.2 注塑机基本参数 .......................................... 8

3.3.3 选择注塑机 .............................................. 9 3.4 注射机的校核 ................................................... 10 4 模具结构和尺寸 ....................................................... 8

4.1 浇注系统设计 .................................................... 8

4.1.1 主流道 .................................................. 8

4.1.2 分流道 .................................................. 8

4.2 模架的确定 ...................................................... 8 4.3 定出系统设计 .................................................... 8

4.4 脱模力的计算 .................................................... 8

4.5 推杆脱模机构 ................................................... 18

4.5.1 推杆脱模机构 ........................................... 18

4.5.2 推杆脱模机构设计 ....................................... 19

4.6 抽芯机构设计 .................................................. 20

4.6.1 确定抽芯机构形式 ..................................... 20

4.6.2 斜导柱抽芯的结构尺寸 ................................. 16

5 工作尺寸和冷却系统设计 .............................................. 17

5.1 工作尺寸计算 .................................................. 23 5.1.1 凹模工作尺寸计算 ....................................... 23 5.1.2 凸模工作尺寸的计算 ..................................... 25

5.2 冷却系统设计 .................................................. 26 5.2.1 温度调节对塑件质量的影响 ............................... 26 5.2.2 温度调节系统的要求 ..................................... 26

5.2.3 冷却系统设计 ......................................... 27 5.2.4 模具的 …… 此处隐藏：10728字，全部文档内容请下载后查看。喜欢就下载吧 ……