訂書機(jī)外殼注射模設(shè)計(jì)
摘要：本畢業(yè)設(shè)計(jì)說明書詳細(xì)介紹訂書機(jī)外殼塑件的注射模設(shè)計(jì)。主要內(nèi)容是材料(聚丙稀PP)特性分析，塑料注射模的結(jié)構(gòu)設(shè)計(jì)、標(biāo)準(zhǔn)件的選擇、模具材料選擇、典型零件的數(shù)控加工3G程序代碼編程設(shè)計(jì)。該塑件外表面要求達(dá)到境面，內(nèi)部有彎曲的加強(qiáng)肋，底部進(jìn)行文字加工，不但有外側(cè)抽芯成型兩個(gè)圓柱孔、兩個(gè)半圓柱孔及圓柱孔旁邊的淺孔，還有內(nèi)側(cè)抽芯成型內(nèi)部四個(gè)突臺。外側(cè)抽芯距離短，模架小，在型腔板上固定彎銷來實(shí)現(xiàn)側(cè)抽芯。由于塑件中部有兩不易成型的圓肋，采用了增加兩個(gè)小型芯鑲件的辦法減少加工模具的難度。整體外形為曲面，不能用傳統(tǒng)的加工工藝，而是在Pro/E建模的基礎(chǔ)上電火花成型。
關(guān)鍵詞: 訂書機(jī)外殼；注射模設(shè)計(jì)；側(cè)抽芯；曲面
The Design of the Book Sewer outside Shell Injection Mold
Abstract： This graduate design instruction book has introduced the design of the book sewer outside shell injecting molding in detail. It mainly contains the analysis of property of the material (polypropylene PP), the structural design of injection mold, the selection of standardized part and the material of injection mold, the 3G code NC part programming for typical part. The surface of this plastic part should be mirror finished. The inside of it has bending reinforcing rib. The bottom of it should be worked with words. It not only has two cylindrical pore、two half cylindrical pore and short-hole beside the cylindrical pore that should be formed by outside extracting part, but also has four lug formed by inside extracting part. The distance of extracting is short and the mould is small, so fixing angle block on the cavity die is to finish outside extracting. Because the inside of the plastic part has two round ribs that are difficult to be formed, two inserts are added to make it easier to form mold. The integral surface is camber. It can’t be formed by conventional job operation, so spark machine is needed to form it on the basis of Pro/E molding foundation.
Key words : book sewer; design of injection mold; outside extracting; camber
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目錄
1 塑件工藝分析 ………………………………………………………………………
1.1塑件分析…………………………………………………………………………
1.2塑件材料成型特性分析…………………………………………………………
1.3脫模斜度…………………………………………………………………………
1.4擬定模具的結(jié)構(gòu)形式……………………………………………………………
1.4.1型腔數(shù)量的確定……………………………………………………………
1.4.2模腔排列形式的確定………………………………………………………
1.5注射機(jī)型號的確定………………………………………………………………2
1.5.1注射計(jì)算……………………………………………………………………
1.5.2鎖模力的計(jì)算………………………………………………………………
1.5.3選擇注射機(jī)…………………………………………………………………
1.6注射有關(guān)參數(shù)的校核………………………………………………………………
1.6.1鎖模力的校核………………………………………………………………
1.6.2型腔數(shù)目的校核……………………………………………………………
1.6.3開模行程的校核……………………………………………………………
2 澆注系統(tǒng)的設(shè)計(jì)………………………………………………………………………
2.1主流道的設(shè)計(jì)……………………………………………………………………
2.2主流道襯套的設(shè)計(jì)………………………………………………………………
2.3分流道的設(shè)計(jì)……………………………………………………………………
2.4冷料穴的設(shè)計(jì)……………………………………………………………………
2.5澆口形式的設(shè)計(jì)…………………………………………………………………
2.6分型面的設(shè)計(jì)……………………………………………………………………
2.7排氣槽的設(shè)計(jì)……………………………………………………………………
3 成型零件的設(shè)計(jì)和計(jì)算………………………………………………………………
3.1凹模的結(jié)構(gòu)設(shè)計(jì)…………………………………………………………………
3.2凸模的結(jié)構(gòu)設(shè)計(jì)…………………………………………………………………
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3.3型芯安裝固定形式………………………………………………………………
3.4成型零件工作尺寸的計(jì)算………………………………………………………
3.5型腔壁厚計(jì)算……………………………………………………………………
3.6矩形模具動模墊塊厚度計(jì)算………………………………………………………
4 模架的確定……………………………………………………………………………
4.1確定定模座板……………………………………………………………………
4.2確定定模板………………………………………………………………………
4.3確定墊塊…………………………………………………………………………
4.4確定動模座板……………………………………………………………………
4.5確定推板…………………………………………………………………………
4.6確定推桿固定板……………………………………………………………………
5 對合導(dǎo)向機(jī)構(gòu)零部件設(shè)計(jì)………………………………………………………………
5.1導(dǎo)柱對合導(dǎo)向機(jī)構(gòu)………………………………………………………………
5.1.1導(dǎo)柱設(shè)計(jì)……………………………………………………………………
5.1.2導(dǎo)柱尺寸……………………………………………………………………
5.1.3導(dǎo)柱的布置…………………………………………………………………
5.2導(dǎo)套的設(shè)計(jì)………………………………………………………………………
6 脫模機(jī)構(gòu)的設(shè)計(jì)和計(jì)算………………………………………………………………
6.1脫模機(jī)構(gòu)的設(shè)計(jì)……………………………………………………………………
6.2脫模機(jī)構(gòu)的計(jì)算……………………………………………………………………
7 側(cè)向抽芯機(jī)構(gòu)的設(shè)計(jì)……………………………………………………………………
7.1抽芯機(jī)構(gòu)選擇………………………………………………………………………
7.2抽芯機(jī)構(gòu)計(jì)算………………………………………………………………………
8 溫度調(diào)節(jié)系統(tǒng)的設(shè)計(jì)和計(jì)算…………………………………………………………
8.1加熱系統(tǒng)……………………………………………………………………………
8.2冷卻系統(tǒng)的設(shè)計(jì)………………………………………………………………………
8.3冷卻系統(tǒng)的簡略計(jì)算………………………………………………………………
8.4冷卻裝置的布置…………………………………………………………………
9 排氣系統(tǒng)……………………………………………………………………………… 35
9.1排溢的影響…………………………………………………………………………35
9.2引氣的影響…………………………………………………………………………35
9.3排氣的方式…………………………………………………………………………36
10 標(biāo)準(zhǔn)零件的選取和各零件材料選擇………………………………………………… 36
10.1設(shè)計(jì)中所用的標(biāo)準(zhǔn)螺釘………………………………………………………… 36
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10.2塑料模具成型零件的選材…………………………………………………………
10.3模板零件的選材……………………………………………………………………
10.4澆注系統(tǒng)零件的選材………………………………………………………………
10.5導(dǎo)向零件的選材……………………………………………………………………
10.6側(cè)向分型與抽芯機(jī)構(gòu)的選材…………………………………………………………
10.7其他零件的選材……………………………………………………………………
11 模具工作過程…………………………………………………………………………
12 數(shù)控加工設(shè)計(jì)…………………………………………………………………………
12.1數(shù)控機(jī)床程序編制的內(nèi)容與步聚……………………………………………………
12.2數(shù)控加工工藝…………………………………………………………………………
12.3具體加工程序…………………………………………………………………………
參考文獻(xiàn)…………………………………………………………………………………………
致謝……………………………………………………………………………………………
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