本科畢業論文-塑料齒輪注塑模具設計說明書-資料下載頁

　　

【正文】 標準模架時，因模架本身帶有導向裝置，一般情況下，設計人員只要按模架規格選用即可。若需采用精密導向定位裝置時，則需設計人員根據模具結構進行具體設計。 ` 39 圖 ` 40 8 模具的工作過程原理 模具完成一次注塑塑件產品主要有以下流程： （ 1）對塑料 ABS：對其色澤、粒度及雜質檢驗，并進行適當的干燥； （ 2）清理模具型芯、型腔，并噴上脫模劑，將模具裝上注塑機并合模鎖緊模具，對注塑機和模具進行預熱，預熱溫度設定為 8085℃，預熱時間 23 小時； （ 3）將 ABS塑料粒倒入注塑機，對塑料進行預塑化，對注塑機設置以下參數： 螺桿轉速（ r/min）： 30 料筒溫度（℃）后段： 150～ 170 中段： 165～ 180 前段： 180～ 200 噴嘴溫度（℃） 170～ 180 模具溫度（℃）： 50～ 80 注射壓力（ Mpa）： 60～ 100 保壓壓力（ Mpa）： 60～ 100 成型時間（ s）：注射 10～ 40；保壓 0～ 5；冷卻時間 10～ 60； 成型周期 (s)： 25～ 55[11] （ 4）開始注射，注射過程包括充模、保壓、放氣、固化成型、脫模等； （ 5）脫模工作過程及原理 如下圖 ，是整個脫模工作過程和原理的分解圖。 （ 6）塑件的后處理 塑件后處理包括：退火和調濕處理。退火處理是指將塑件在定溫的加熱液體介質或熱空氣循環烘箱中靜置一段時間，然后緩慢冷卻。其目的是減少塑件內部產生的內應力，這在生產厚壁或帶有金屬嵌件的塑件時更為重要。調濕處理是指將剛脫模的塑件放在熱水中，隔絕空氣，防止塑件的氧化，加快吸濕 平衡速度。其目的是使塑件的顏色、性能以及尺寸穩定。 [11] ` 41 ` 42 圖 ` 43 結論 經過接近二個月多的努力，畢業設計終于完成了。可能此畢業設計尚存在不足之處，但通過這段時間的學習與工作，從中學習到了很多相關的知識和經驗。這對以后的學習和工作都有著很大的幫助和作用。 畢業設計是檢驗我們在校期間對專業知識的掌握和熟練程度，是對我們所學專業知識的一次檢閱。這次畢業設計是對我們所學知識的一次綜合運用，把所學的知識運用到實際加工中。通過這次畢業設計，鞏固且擴充了“塑料成型工藝與模具設計”等課程所學的內容，掌握了塑料模具設計的方法和步驟，知道如何運用相關資料、書籍與手冊、圖表等來查閱設計中所需的相關數據和內容。且學會了綜合運用本專業所學課程的理論和生產實際知識。進行塑料模具設計工作的實際訓練，培養和提高了獨立工作的能力。 在做畢業設計時，讓我知道自己專業知識的缺乏與不扎實、不牢固 性，也讓我意識到自己還有很多地方需要加強的。在設計時，也難免會遇到一些難以解決的疑難問題 ,但通過我的指導老師的耐心指導和同學之間的相互交流與討論，使我很順利地克服了這些。從而從中也學到了許多 ,使自身在各方面的能力都有了很大的提高和完善，各方面的能力都得到了很好的煅煉。 畢業設計不僅是老師對我的學習所進行的一次測試，也是我對自身的一次檢查，是我對所學課程的一次深入的綜合復習 ,也是今后走向社會在工程設計中的一次實踐與經驗。通過這次設計，讓我發現了自身知識的缺乏和不足，從而更好更徹底地認識、規劃、完善自己，去適應這種競爭激烈的社會，我將會在以后的工作中做得更好 ,更完善。 ` 44 致謝 對四年來辛勤教導我的老師和學校致以最崇高的敬意！ 對本次畢業設計指導我和給予我最多的老師們表示我最衷心的感謝 !在本論文的完成過程中，我的指導老師給予了我耐心指導、細心的幫助和熱情鼓勵，使我順利完成了畢業設計工作。他嚴謹的治學態度、淵博的知識和執著的敬業精神給我留下了深刻印象。 激勵我克服困難，廣泛涉獵新思想、新理論，不斷地探求新的科學發展。同時，也讓我懂得如何去踏踏實實地工作、勤勤懇懇地做人。 同時，感謝在做課題過程中為我提供便利和幫助的老師和同學們。在此，向所有關心和幫助過我的領導、老師、同學和朋友表示由衷的謝意 !衷心地感謝在百忙之中評閱論文和參加答辯的各位專家、老師！對系里所有同學表示衷心的感謝，四年來的朝夕相伴，他們對我的關心和幫助，讓我在四年的大學生活中，學習上生活上都有了質的提高。 ` 45 參考文獻 1齊曉杰 .塑料成型工藝與模具設計 [M].北京 :機械工業出版社 ,2021 2王剛，單巖 .Moldflow 模具分析應用實例 .北京：清華大學出版社， 2021 3唐志玉主編 .塑料模具設計師指南 [M].國防工業出版社 , 4 夏巨諶總主編 .中國模具設計大典（數據庫 . 電子版） 5 鄒繼強主編 .塑料模具設計參考資料匯編 [M].北京：清華大學出版社 , 6《塑料模具設計手冊》編寫組 .塑料模具設計手冊 [M].北京：機械工業出版社， 2021 7 康俊遠主編 .模具材料與表面處理 [M]，北京：北京理工大學出版社， 8 王紀安主編 .工程材料與材料成形工藝 (2版 )[M].北京：高等教育出版社， 9 模具設計與制造技術教育叢書編委會 編 .模具常用機構設計 [M]北京 :機械工業出版社， 10 張榮清主編 .模具設計與制造 [M]南京：高等教育出版社， ` 46 您好，為你提供優秀的畢業論文參考資料，請您刪除以下內容， O(∩ _∩ )O 謝謝！??！ A large group of tea merchants on camels and horses from Northwest China39。s Shaanxi province pass through a stop on the ancient Silk Road, Gansu39。s Zhangye city during their journey to Kazakhstan, May 5, 2021. The caravan, consisting of more than 100 camels, three horsedrawn carriages and four support vehicles, started the trip from Jingyang county in Shaanxi on Sept 19, 2021. It will pass through Gansu province and Xinjiang Uygur autonomous region, and finally arrive in Almaty, formerly known as AlmaAta, the largest city in Kazakhstan, and Dungan in Zhambyl province. The trip will cover about 15,000 kilometers and take the caravan more than one year to plete. The caravan is expected to return to Jingyang in March 2021. Then they will e back, carrying specialty products from Kazakhstan A small art troupe founded six decades ago has grown into a household name in the Inner Mongolia autonomous region. In the 1950s, Ulan Muqir Art Troupe was created by nine young musicians, who toured remote villages on horses and performed traditional Mongolian music and dances for nomadic families. The 54yearold was born in Tongliao, in eastern Inner Mongolia and joined the troupe in says there are 74 branch troupes across Inner Mongolia and actors give around 100 shows every year to local nomadic people. I can still recall the days when I toured with the troupe in the early 39。80s. We sat on the back of pickup trucks for hours. The sky was blue, and we couldn39。t help but sing the folk songs, Nasun says. The vastness of Inner Mongolia and the lack of entertainment options for people living there, made their lives lonely. The nomadic people were very excited about our visits, Nasun recalls. We didn39。t have a formal stage. The audience just sat on the grass. Usually, the performances became a big party with local people joining in. For him, the rewarding part about touring isn39。t just about sharing art with nomadic families but also about gaining inspiration for the music and dance. Ulan Muqir literally translates as red burgeon, and today39。s performers of the troupe still tour the region39。s villages and entertain nomadic families, but their fame has spread around the world. On May 16 and 17, nearly 100 singers and dancers from the troupe performed at Beijing39。s Poly Theater. Their show, titled Ulan Muqir on the Grassland, depicted the history and development of the art troupe. Being from the region allowed me to embrace the culture of Inner Mongolia and being a member of the troupe showed me where I belonged, Nasun, the art troupe39。s president, who is also a renowned tenor, tells China Daily. During a tour in 1985, he went to a village and met an elderly local man, who told him a story about his friendship with a solider from Shenyang, capital of Northeast China39。s Liaoning province, decades ago. The solider gave the old man a handmade saddle when they bid farewell. The story inspired Nasun to write Carved Saddle, a song that later became one of his most popular numbers. Now, every year, Nasun recruits young singers and dancers for the troupe. The troupe has also designed a new repertoire, which is mostly based on the daily lives of Mongolian people, especially the lives of nomadic families, and has bined contemporary musical elements with folk songs of the region. Haimu, a 25yearold khoomei (a local variant of overtone singing) singer, joined the troupe three years ago. Along with a sixmember band, he performs fast songs and soft ones that he writes－ all while playing the horsehead fiddle.Although I learned the piano since childhood and grew up listening to various kinds of music, to me, the folk music of Inner Mongolia is the root, he says. Performing in remote villages is pleasant. I feel at home on the b oundless grasslands, and the warm people there make me feel fulfilled. The first round of spring auction season in Beijing ended last week, but it failed to create much spring in the art market. Although two pieces of Chinese painting fetched more than 100 million yuan, the decline i