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摘要

本文介紹了注射模具的特點及發(fā)展趨勢，敘述了電子鐘后蓋注射模具設計與計算的詳細過程，介紹了該塑件的成型工藝、注射模具的結構特點與工作過程, 闡述了在有斜滑塊抽芯的注射模設計中應注意的事項。在對電子鐘后蓋的模具設計過程中，本設計主要設計要點如下：塑件的設計比較的合理；分型面的選擇有利于塑件成型；脫模機構的設計不但結構簡單，而且脫模動作穩(wěn)定可靠；進澆口的選擇不影響塑件外觀，而且保證塑件充填均勻；冷卻水道的設計使模具效率達到最高，保證塑件質量要求；在設計的過程中借用分析軟件如CAM等使設計更合理、更有效；大量使用標準件，使模具制作成本大大降低；本模具設計最關鍵的一點就是設計已達到實際生產的要求。

【關鍵詞】 電子鐘；注射模；分型面；斜滑塊；側抽芯；脫模機構。

Design of the Injection Mould for The Back of Electronic Clock
Major:Material processing and control engineering
Author:
Directing teacher:


Abstract

The characteristics and developments of injection mould were introduced in this paper. The designing and calculating of injection mould for the back of electronic clock were stated in detail. The forming process of the product and the structure characteristics as well as working process of the injection mould were introduced .The points must be paid attention to in the design of the injection mould for the part with lifters were stated.In the process of the designing of the injectinon mould for electronic clock receiver, people should pay attention to several suggestions: the plastic should be designed as reasonable as possible. The selection of the sub-type parts are benificial to mold the parts of plastic. The design of the structure of drawing of pattern is not only simple but also the movement should be stable and reliable. The selection of Jin runner should ensure to fill the plastic equally under the prerequisite of not influencing the appearance of the plastic. The design of cooling penstock should make the rate of production reach to the topmost, and ensure any influence to do nothing to the equality of the plastic. Meanwhile, in the process of designing ,we can use analysis soft, such as CAM, to make the design been more reasonable and efficient. Making full use of large amounts of standard pieces will reduce the cost of mold plastic facture. The key point of the design of mold plastic have reached the request of the real production.

Keywords electronic clock; injection mould; core pulling ;selection of the sub-type parts; lifter; structure of drawing of pattern.

目 錄
摘要
前言 1
1 塑件成型工藝分析 2
1.1 塑件分析 2
1.2 塑料ABS的成型特性及工藝參數(shù) 3
2 擬定模具結構形式 6
2.1 型腔的設計 6
2.2 分型面的設計 7
3 注塑機的選擇與確定 9
3.1 注射機的技術規(guī)范 9
3.2 注射過程注塑量的計算 10
3.3 注射機的選用 10
3.型腔數(shù)量及注射機參數(shù)的校核 11
3.5 模具與注射機安裝部分相關尺寸的校核 12
4 澆注系統(tǒng)的的設計 15
4.1 澆注系統(tǒng)設計的原則 15
4.2 主流道的設計 15
4.3 冷料穴的設計 17
4.4 分流道的設計 18
4.5 澆口的設計 21
4.6 澆注系統(tǒng)的平衡 22
5 成型零件的設計 24
5.1 成型零件的要求及選材 24
5.2 成型零件的結構設計 24
5.3 成型零件尺寸的計算 24
5.4 型腔剛度的校核 28
6 模架的確定 32
6.1 模架的概述 34
6.2 模架的選用 34
6.3 模板尺寸的確定 34
7 導向機構的設計 36
7.1導柱、導套的導向機構設計要點 36
7.2 導柱的設計 36
7.3 導套的設計 37
8 脫模機構的設計 39
8.1 脫模機構的分類及設計原則 39
8.2 推桿的設計及脫模力的計算 40
8.3 脫模機構的復位元件 42
8.4 側向分型與抽芯機構的設計 42
9 模具冷卻系統(tǒng)的設計 45
9.1 模具加熱、冷卻系統(tǒng)的設計要點 45
9.2 冷卻系統(tǒng)的設計 45
10 模具材料的選用 48
10.1 模具材料選用的要求 48
10.2 注塑模具常用材料 48
11模具的工作過程 51
11.1提前預處理 51
11.2 注塑過程 51
11.3 脫模過程 51
12 全面審核投產制造 52
12.1 模具的安裝原則 52
12.2 試模 52
12.3 模具合格的條件 52
13 典型零件制造工藝 54
14 設計總結 59
15 致謝 60
參考文獻 61
附錄：中英文翻譯 62