收音机外壳注塑成型工艺及模具设计论文+任务书+文综+开题+翻译+cad图纸+三维图

摘  要

本次毕业计划涉及到塑料注塑模具的相干常识。塑件结构工艺性阐发，成型工艺参数的肯定，分型面的计划，模具型腔数目标肯定，型腔的分列和结构，注塑成型机的抉择；浇口地位的抉择和流道的安排，模具事情整机的结构计划及实践盘算，侧向分型与抽芯机构的计划，推出机构的计划，排气方法计划，模具全体尺寸的肯定，抉择模架，模具装置尺寸的校核；而后画图编写计划仿单。经由过程这次计划将会为将来的事情积聚一定的履历，尤其是三维作图，数据阐发，熬炼了阐发成绩办理成绩的才能，和对常识的进修和应用才能。

（1）该塑件尺寸不大，一样平常精度品级。属于中等难度的塑料模具。包括了模具的根本结构，其中有一处外侧抽芯，内侧抽芯五处（五处内侧抽芯根本尺寸及结构均同等）。

  （2）为满意成品外面品质请求与进步成型效力采纳侧浇口。

  （3）为了勤俭本钱和便利加工与热处置，型腔和型芯均采纳全体镶嵌式结构。

  （4）ABS在升温时粘度增高，以是成型压力较高，故塑件上的脱模斜度宜稍大，要有充足的脱模斜度避免顶角；ABS易吸水，成型加工前应停止枯燥处置；ABS易发生熔接痕，模具计划时应留意只管即便削减浇注体系对料流的阻力，要留意浇口地位避免和削减熔接痕；在失常的成型条件下，壁厚、熔料温度对压缩率影响极小。模具温度应节制在60°～80°。

关键词：塑料模具；参数化；镶件；分型面；成型；ABS

Abstract

This graduation program involves common sense of plastic injection molds. Analysis of structural process of plastic parts, affirmation of molding process parameters, plan of parting surface, determination of the number of die cavities, separation and structure of cavity, choice of injection molding machine, choice of gate position and arrangement of runner, The structure plan and practice calculation of the whole machine, the plan of lateral parting and core-pulling mechanism, the plan of launching mechanism, the plan of exhaust method, the affirmation of all dimensions of die, the choice of die frame, the checking of the size of die device; Then draw up the plan copy. Through the process, this plan will build a certain resume for future events, especially in three dimensions Mapping, data analysis, the ability to analyze the results, and the learning and application of common sense ability.

(1) the plastic parts are of small size and of the same normal precision grade. Plastic mould of medium difficulty. It includes the basic structure of the mould, including one outside core pulling, five inner core pulling (the basic size and structure of the five inner core pulling are the same).

(2) adopt side gate to satisfy the outside quality request and improve molding effect of finished product.

(3) in order to save money and facilitate processing and heat disposal, the cavity and core adopt the whole mosaic structure.

(4) the viscosity of ABS increases when it is heated up, so it is necessary to have a slightly larger angle of demoulding on the molded parts because the molding pressure is relatively high. The ABS is easy to absorb water, and the dry disposal should be stopped before the molding process. ABS is prone to weld marks. The mold plan should pay attention to reduce the resistance of the pouring system to the material flow, avoid and reduce the weld mark in the gate position; in the abnormal forming condition, the wall thickness and the melting material temperature have little effect on the compression ratio. Mold temperature should be controlled between 60 °and 80 °.

Keywords: plastic mould; parameterization; insert; parting surface; molding; ABS

目  录

前言 1

第一章  绪  论 2

1.1 模具介绍 2

1.2 模具在加工工业中的地位 2

1.3 模具的发展趋势 2

1.4 设计在学习模具专业中的作用 4

第二章  产品三维造型及MOLDFLOW分析 5

2.1产品三维造型 5

2.2 CAE介绍 6

2.3 CAE分析 8

第3章  塑件材料及工艺性 11

3.1 材料分析 11

3.2 工艺分析 11

3.3 制件的成型方法及参数 11

3.4 确定型腔数目 12

第4章  浇注系统的设计 13

4.1制件在模具中的位置 13

4.2 确定浇口形式及位置 13

4.3 主流道的设计 14

4.4 分流道设计 15

4.5 冷料穴设计 16

第5章  成型零部件的设计 17

5.1  成型零部件的结构设计 17

5.2  成型零部件工作尺寸计算 18

5.3  成型零部件的强度与刚度计算 19

第6章  结构零部件的设计 20

6.1  选用标准注射模架 20

6.2  定模板与动模板的设计 22

6.3  合模导向机构的设计 23

第七章 推出及抽芯机构的设计 24

7.1  推出机构设计 24

7.2  外侧抽芯机构设计 25

7.3  内侧抽芯机构设计 25

第八章  模具的工作原理 29

结 论 31

致 谢 32