CD132汽車后保險(xiǎn)杠注塑模設(shè)計(jì)及工藝優(yōu)化（本科畢業(yè)論文設(shè)計(jì)）

摘    要

注塑成型是現(xiàn)代塑料工藝中一種重要的加工方法。塑料保險(xiǎn)杠具有強(qiáng)度、剛性和裝飾性，從安全上看，汽車發(fā)生碰撞事故時(shí)能起到緩沖作用，保護(hù)前后車體；從外觀上看，可以很自然的與車體結(jié)合在一塊，渾然成一體，具有很好的裝飾性，是裝飾轎車外型的重要部件。
本文主要就CD132汽車后保險(xiǎn)杠注塑模的總設(shè)計(jì)方案進(jìn)行了分析和確定。在進(jìn)行注塑工藝方案選擇時(shí)，運(yùn)用MOLDFLOW軟件對(duì)零件成型過程進(jìn)行數(shù)值模擬仿真，并根據(jù)分析結(jié)果優(yōu)化設(shè)計(jì)方案，已達(dá)到減少缺陷、提高成型質(zhì)量的目的。在進(jìn)行注塑模具設(shè)計(jì)時(shí)，對(duì)模具結(jié)構(gòu), 包括澆注系統(tǒng)、成型零件和導(dǎo)向裝置等的設(shè)計(jì)進(jìn)行了介紹，并利用UG軟件對(duì)模具結(jié)構(gòu)進(jìn)行三維實(shí)體造型。

關(guān)鍵詞：汽車保險(xiǎn)杠，MPI模擬分析，注塑模設(shè)計(jì)，CAD/CAE 

ABSTRACT

Injection molding is a kind of important plastic processing methods in modern plastic forming process. The plastic bumper is the safe installation of outside to absorb and mitigation power and the protection around department of auto body. And it also has a good decorate meaning, which to decorate the car's important part of the outside type.
The overall design and resin for the injection mold for the rear bumper of mendeo CD132 car were analyzed and determined in this paper. During the selection of injection process, a flow chart of optimization of gate design by using MoldFlow software is introduced resulted in reasonable gate number and location of the rear bumper by using it.  The designs of the injection mold, including the designs of molding part, guide and mold temperature control were also described in the paper. The injection mould of bumper is accurated by the UG software.

Key words： Bumper, MPI simulation analysis, Plastic Injection Mould, CAD/CAE

目   錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 1
  1.1國(guó)內(nèi)外注塑模具的發(fā)展現(xiàn)狀 1
1.2 CAD/CAE技術(shù)在塑料注塑模具中的應(yīng)用 2
1.2.1 CAD技術(shù) 2
1.2.2 CAE技術(shù) 2
1.3本課題的主要研究?jī)?nèi)容 3

 2 CD132汽車后保險(xiǎn)杠工藝分析 5
2.1材料工藝性能分析 5
2.2塑件結(jié)構(gòu)的工藝分析 5
2.3 CAE注塑模擬分析 7
2.3.1有限元模型的建立 7
2.3.2材料的選用 9
2.3.3澆口位置的選擇和確定 11
2.3.4流動(dòng)分析過程及結(jié)果 13
2.3.5翹曲分析過程及結(jié)果 18
2.4 本章小結(jié) 19

 3 CD132汽車后保險(xiǎn)杠注射模設(shè)計(jì) 20
3.1大型模具設(shè)計(jì)的特點(diǎn) 20
3.2澆注系統(tǒng)的設(shè)計(jì) 20
3.2.1熱流道系統(tǒng)簡(jiǎn)介 21
3.2.2熱流道系統(tǒng)設(shè)計(jì) 21
3.2.3澆口設(shè)計(jì) 23
3.3注射模成型部件的設(shè)計(jì) 24
3.3.1型腔總體布置與分型面的選擇 24
3.3.2結(jié)構(gòu)設(shè)計(jì) 25
3.3.3排氣結(jié)構(gòu)設(shè)計(jì) 27
3.4導(dǎo)向與推出機(jī)構(gòu)設(shè)計(jì) 27
3.4.1導(dǎo)向機(jī)構(gòu)設(shè)計(jì) 27
3.4.2推出機(jī)構(gòu)設(shè)計(jì) 28
3.5冷卻系統(tǒng)設(shè)計(jì) 30
3.5.1冷卻系統(tǒng)的設(shè)計(jì)原則 30
3.5.2冷卻水道的設(shè)計(jì) 30
3.6模具材料的選用 31
3.7 本章小結(jié) 31

4 結(jié)論 32

致謝 33

參考文獻(xiàn) 34