板(框)類制品疊層式注射模具設(shè)計(jì)

論文編號(hào):JX1792  論文字?jǐn)?shù):10872，附CAD圖紙，外文翻譯

摘要
 本論文設(shè)計(jì)了儀器外殼的疊層式熱流道模具結(jié)構(gòu)。該模具有2層，每層8個(gè)型腔，一次可成型16個(gè)產(chǎn)品，該模具是普通注射成型產(chǎn)量的2倍，大大提高生產(chǎn)力。本次模具設(shè)計(jì)采用的是無流道凝料澆筑系統(tǒng)，不考慮澆道的凝料脫出，減少了分型面，并縮短了成型周期，降低了整個(gè)生產(chǎn)成本。而且還采用了齒輪齒條開模機(jī)構(gòu)，在確保倆層型腔同時(shí)開模又比較經(jīng)濟(jì)。使熱流道板的熱脹變形問題和澆口的平衡問題有一個(gè)很好的解決，基本確保同時(shí)充模和充模的穩(wěn)定可靠性。該模具還采用閉合式噴嘴和閉合式主流道杯，解決了澆口和主流道始端的流涎問題，它采用熱電偶控制噴嘴溫度和流道板溫度。在設(shè)計(jì)中，為減少熱傳導(dǎo)熱損失。在流道板和型腔板之間采用空氣隔熱，并加隔熱墊，從而降低模具和流道板之間的接觸面積，并發(fā)揮了支撐熱流道板的作用。噴嘴和主流道杯均采用隔熱套隔熱。
關(guān)鍵詞 熱流道；疊層式模具；澆口平衡；防流涎

板(框)類制品疊層式注射模具設(shè)計(jì)

Abstract
 This design introduces the mould structure of instrument of outer cover, which has piles of type and thermal current dishes. The mould has 2 layers of types, 8 for each layer, which can shape 16 products for once, the mould can produce 2 times of products ordinary inject shaping, and it boosts productivity greatly . The mould uses a thermal current dish of congeal material , without consideration of the deviatation of water dish congeal material, which has reduced dividing type, and shortened shaping cycle. And it has reduced the cost of the production on the whole. The mould which is economic adopts a gear and rack to turn on , making sure the two types of the mould turning on at the same time. The mould gives a good settlement of the expansion problem of the board of the thermal current dishes and the balance problem of runner, guaranting to fill the mould steadily and basically making sure the mould filling at the same time. The mould adopts the spray nozzle of closing type and the cup of mainstream dishes, solve the saliva problem of runner and the top shed of mainstream dishes, and it adopts the electric thermocouple to control the temperature of the spray nozzle and the flow dishes board. In the design, for reducing losing heat of the heat-conduction. Between the flow dishes board and the mould board, there is air to against heat, there are against heat cushions to against heat ,which reduces the area of contact between the mould board and the flow dishes and plays a role of supporting of the board of the thermal current. The spray nozzles and the cup of the mainstream dishes have heat insulation set.
Keywords  Thermal current one   One pile of types mould   Balance the runner   Prevent saliva flows

 板(框)類制品疊層式注射模具設(shè)計(jì)

目       錄
摘要 II
Abstract III
1 緒論 1
2 制品設(shè)計(jì) 3
2.1制件圖 3
2.2產(chǎn)品使用要求 4
2.3產(chǎn)品材料 4
3 工藝分析 5
3.1 塑料特性 5
3.2 塑料的注射工藝條件 5
3.3 塑件使用材料的工藝分析 6
4選擇設(shè)備 7
5模具設(shè)計(jì) 8
5.1 模具結(jié)構(gòu)設(shè)計(jì) 8
5.1.1 選擇分型面 8
5.1.2 布置型腔 8
5.1.3 確定成型零部件結(jié)構(gòu) 9
5.1.4 澆注系統(tǒng)結(jié)構(gòu)設(shè)計(jì) 9
5.1.5 開模機(jī)構(gòu)設(shè)計(jì) 10
5.1.6 脫模機(jī)構(gòu)設(shè)計(jì) 11
5.1.7 溫控系統(tǒng)設(shè)計(jì) 11
5.2主要零部件尺寸計(jì)算 11
5.2.1 成型零部件尺寸計(jì)算 11
5.2.2 確定模具各部分結(jié)構(gòu)尺寸 17
5.2.3 澆注系統(tǒng)計(jì)算 18
5.2.4 冷卻系統(tǒng)計(jì)算 21
5.2.5 推出機(jī)構(gòu)計(jì)算 25
5.3 校核 28
5.3.1 模具與注射機(jī)關(guān)系校核 28
5.3.2 物料流程與流動(dòng)比校核 29
結(jié)論 30
致謝 31
參考文獻(xiàn) 32