訂書機外殼注射模設計
摘要：本畢業(yè)設計說明書詳細介紹訂書機外殼塑件的注射模設計。主要內容是材料(聚丙稀PP)特性分析，塑料注射模的結構設計、標準件的選擇、模具材料選擇、典型零件的數(shù)控加工3G程序代碼編程設計。該塑件外表面要求達到境面，內部有彎曲的加強肋，底部進行文字加工，不但有外側抽芯成型兩個圓柱孔、兩個半圓柱孔及圓柱孔旁邊的淺孔，還有內側抽芯成型內部四個突臺。外側抽芯距離短，模架小，在型腔板上固定彎銷來實現(xiàn)側抽芯。由于塑件中部有兩不易成型的圓肋，采用了增加兩個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建模的基礎上電火花成型。
關鍵詞: 訂書機外殼；注射模設計；側抽芯；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擬定模具的結構形式……………………………………………………………
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注射機型號的確定………………………………………………………………2
1.5.1注射計算……………………………………………………………………
1.5.2鎖模力的計算………………………………………………………………
1.5.3選擇注射機…………………………………………………………………
1.6注射有關參數(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)的設計………………………………………………………………………
2.1主流道的設計……………………………………………………………………
2.2主流道襯套的設計………………………………………………………………
2.3分流道的設計……………………………………………………………………
2.4冷料穴的設計……………………………………………………………………
2.5澆口形式的設計…………………………………………………………………
2.6分型面的設計……………………………………………………………………
2.7排氣槽的設計……………………………………………………………………
3 成型零件的設計和計算………………………………………………………………
3.1凹模的結構設計…………………………………………………………………
3.2凸模的結構設計…………………………………………………………………
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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算………………………………………………………
3.5型腔壁厚計算……………………………………………………………………
3.6矩形模具動模墊塊厚度計算………………………………………………………
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 對合導向機構零部件設計………………………………………………………………
5.1導柱對合導向機構………………………………………………………………
5.1.1導柱設計……………………………………………………………………
5.1.2導柱尺寸……………………………………………………………………
5.1.3導柱的布置…………………………………………………………………
5.2導套的設計………………………………………………………………………
6 脫模機構的設計和計算………………………………………………………………
6.1脫模機構的設計……………………………………………………………………
6.2脫模機構的計算……………………………………………………………………
7 側向抽芯機構的設計……………………………………………………………………
7.1抽芯機構選擇………………………………………………………………………
7.2抽芯機構計算………………………………………………………………………
8 溫度調節(jié)系統(tǒng)的設計和計算…………………………………………………………
8.1加熱系統(tǒng)……………………………………………………………………………
8.2冷卻系統(tǒng)的設計………………………………………………………………………
8.3冷卻系統(tǒng)的簡略計算………………………………………………………………
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 標準零件的選取和各零件材料選擇………………………………………………… 36
10.1設計中所用的標準螺釘………………………………………………………… 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導向零件的選材……………………………………………………………………
10.6側向分型與抽芯機構的選材…………………………………………………………
10.7其他零件的選材……………………………………………………………………
11 模具工作過程…………………………………………………………………………
12 數(shù)控加工設計…………………………………………………………………………
12.1數(shù)控機床程序編制的內容與步聚……………………………………………………
12.2數(shù)控加工工藝…………………………………………………………………………
12.3具體加工程序…………………………………………………………………………
參考文獻…………………………………………………………………………………………
致謝……………………………………………………………………………………………
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