摘要：本塑件为摄像仪上所用干电池盒盖，分为前盖与后盖。本课题采用一模两腔，运用非平衡式多腔模的浇口平衡设计原理，进行注射模具的结构设计。重点解决内凹和外部凹槽以及非平衡布置的问题。首先对塑件进行结构分析，明确了注塑模具的大体方案，以UG为平台对电池盒盖进行了三维建模，并利用其中的Mold Wizard板块进行相关细节的设计，之后合理制订该模架主要零部件的加工工艺规程，以及注塑设备的选型。本次毕业设计是在一副模具中放置两个不一样的塑件，其中一个表面质量有要求，要用侧浇口，另一个是后盖，直接使用点浇口，并且设置在塑件几何中心，为了综合考虑使用点浇口的三板模与前盖的侧浇口，决定采用热流道技术加热流道板里的凝料，提高了工业生产效率，同时也学习了解了注塑模专业的前沿学科知识。70103

毕业论文关键词： 注塑模具；热流道；电池盒盖

Research on Unbalanced Multi - cavity Mold and Design of Injection Mold for Battery Box Cover

Abstract: The plastic parts for the camera on the use of dry battery cover, pided into front cover and back cover. In this paper, the design of the injection mold is carried out by using the gate balance design principle of unbalanced multi-cavity mold. To solve the plastic side of the hole forming and side pumping mechanism and hinge forming structure design. Through the analysis of the structure of the plastic parts, the overall scheme of the injection mold was determined, and the battery cover was designed with UG as the platform. The design of the relevant details was made by using the moldwizard plate, and then the main parts The processing procedures, as well as the selection of injection molding equipment. The graduation design is placed in a mold two different pieces of plastic parts, one of the surface quality requirements, use the side gate, the other is the back cover, the direct use of the gate, and set the plastic geometry Center, in order to consider the use of the gate gate of the three-plate mold and the front cover of the side gate, decided to use hot runner technology to increase the flow in the board of the material, improve the industrial production efficiency, but also learn to understand the professional axis of injection mold Knowledge of subject.

Key words: Injection mold; Hot runner; Battery cover

目  录

1  绪论  1

1.1  模具制造在国外的发展状况 1

1.2  我国的注塑模发展现状 1

1.3  NX/Mold Wizard模块的优势 2

1.4  热流道技术的简介 2

2  塑件产品设计及其材料性能分析3

2.1  塑件产品分析3

2.2  材料性能分析 3

2.3 注射成型过程及工艺参数 4

2.3.1  成型前的准备 4

2.3.2  工艺参数 4

3  拟定模具的结构形式和校选注射5

3.1  分型面位置的确定5

3.1.1  塑件排布的确定 6

3.1.2  浇口形式的选择 6

3.2  型腔数量的确定7

3.2.1  数量的确定 7

3.2.2  模具结构形式的初步确定 7

3.3  侧向分型抽芯机构的确定 7

3.4  注射机型号的选用及校核8

3.4.1 注射量的计算 8

3.4.2 浇注系统凝料体积的初步估算 9

3.4.3 初步选择注射机 9

3.4.4 注射机校核 9

4  浇注系统的设计13

4.1  主流道的设计 13

4.2  热流道系统 13

4.3  非平衡式浇注系统的研究14

5  成型零件的设计15

5.1  凸凹模设计 15

5.1.1 成型零件加工工艺 15

5.1.2 成型零件加工工艺 16