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目 錄
摘要 .....................................................1
關(guān)鍵詞 .....................................................1
1前言 .....................................................1
2塑件的工藝分析 .........................................3
2.1尺寸和精度 ...........................................3
2.2塑件的形狀 ...........................................3
2.3塑件的臂厚 ...........................................4
2.4塑件的材料...........................................4
3塑件的體積估算和注射機(jī)型號(hào)的選擇 .......................5
3.1估算塑件體積...........................................5
3.2注射機(jī)的類型和規(guī)格 ...................................5
3.3型腔數(shù)目的校核 .......................................7
4澆注系統(tǒng)與排溢系統(tǒng)的設(shè)計(jì) ...............................7
4.1主流道襯套的設(shè)計(jì) .....................................8
4.2分流道的設(shè)計(jì) ........................................8
4.2.1分流道的截面形狀........................................9
4.2.2分流道的截面尺寸........................................9
4.2.3分流道的布置采用平衡式分布...............................9
4.3 冷料井和拉料桿的設(shè)計(jì) ................................9
4.3.1設(shè)在分流道末端的冷料穴................................9
4.3.2設(shè)在主流道的冷料穴................................10
4.4 型腔的布局 ..........................................11
4.5澆口的設(shè)計(jì) ..........................................11
4.6排溢系統(tǒng)的設(shè)計(jì) ......................................12
5成型零件的設(shè)計(jì) ........................................12
5.1分型面的確定 ........................................12
5.2影響塑件尺寸精度的主要因素 ..........................12
5.2.1塑件收縮率的影響.......................................12
5.2.2模具成型零件的制造誤差.................................13
5.2.3模具零件的磨損........................................13
5.2.4模具安裝配合的誤差.....................................13
5.3成型零件的結(jié)構(gòu)設(shè)計(jì) ..................................14
5.3.1定模的結(jié)構(gòu)設(shè)計(jì)........................................15
5.3.2型芯的結(jié)構(gòu)設(shè)計(jì)........................................15
5.3.3成型零件的尺寸計(jì)算.....................................16
5.4模具型腔側(cè)壁與底板厚度的計(jì)算 ........................18
5.4.1型腔側(cè)壁厚度計(jì)算....................... .............19
5.4.2型腔底板厚度計(jì)算...................................19
5.5模架型號(hào)與尺寸的選擇 ................................20
5.5.1墊塊的選擇........................................20
5.5.2定模座板厚度的選擇................................20
5.5.3動(dòng)模座板厚度的選擇.....................................20
6推出機(jī)構(gòu)的設(shè)計(jì) ........................................21
6.1脫模力的計(jì)算 ........................................21
6.2推出機(jī)構(gòu)的設(shè)計(jì) ......................................22
6.2.1推桿的形狀及固定形式...............................22
6.2.2推桿位置的設(shè)置........................................22
6.2.3推桿的尺寸........................................22
6.3推出機(jī)構(gòu)導(dǎo)向與復(fù)位的設(shè)計(jì) ............................23
6.3.1推出機(jī)構(gòu)的導(dǎo)向........................................23
6.3.2推出機(jī)構(gòu)的復(fù)位........................................24
7側(cè)向分型與抽芯機(jī)構(gòu)的設(shè)計(jì) ..............................24
7.1抽拔力的計(jì)算 ........................................24
7.2抽芯距的計(jì)算 ........................................24
7.3斜導(dǎo)柱的設(shè)計(jì)與計(jì)算 ..................................24
7.3.1斜導(dǎo)柱的安裝形式......................................24
7.3.2斜導(dǎo)柱的結(jié)構(gòu)形式及尺寸.................................25
8冷卻系統(tǒng)的設(shè)計(jì) ........................................26
9注射機(jī)與模具的參數(shù)的校核 ..............................26
9.1最大注塑量的校核 ....................................26
9.2模具與注塑機(jī)安裝部分相關(guān)尺寸的校核 ..................27
9.2.1噴嘴尺寸....................................27
9.2.2定位圈尺寸....................................27
9.2.3模具厚度....................................27
9.2.4模具長(zhǎng)度與寬度....................................27
9.3鎖模力的校核 ........................................27
9.4開(kāi)模行程的校核 ......................................27
9.5頂出裝置的校核 ......................................28
10標(biāo)準(zhǔn)件的選擇 ..........................................28
10.1定位銷釘 ............................................28
10.2螺釘 ................................................29
10.3彈簧 ................................................29
11模具的裝配 ...........................................29
11.1組件型腔和型芯與模板的裝配 .........................29
11.2推桿的裝配要求 .....................................30
11.3模具總裝配程序 .....................................30
11.4模具的裝配要求 .....................................30
11.5模具的裝配工藝 .....................................31
12總結(jié) ....................................................31
參考文獻(xiàn) ................................................31
致謝 ....................................................32