【正文】 位桿的作用下，回到初始狀態(tài)，動、定模在注射機的合模機構(gòu)的作用下完全閉合 。為了有效的防止飛邊，可以接近塑 件的有相對位移的面上銼一個三角形的槽，由于空氣的壓力的緣故可以更好的防止飛邊。 （ 8）模具的維護 模具在使 用過程中 。 注射模設計說明書 18 設計總結(jié) 通過對 開關旋轉(zhuǎn)蓋 塑料成型模具的設計， 對于 第一次嘗試模具設計，過程是比較艱辛的，通過自己的努力和老師同學 們 的幫助，本次設計 對常用塑料在成型過程中對模具 的工藝要求有了更深一層的理解， 同時也得到了 鍛煉。 ll wait in the line for one hour to get a ticket, and another two hours at the site, to only see a tiny bit of the place due to the crowds. Last year, 428 million tourists traveled in China over the weeklong holiday in October. Traveling during this period is a matter that needs thorough preparation. If you are short on time to plan the uping Golden Week it may not be a bad idea to avoid some of the most crowded places for now. There is always a place so fascinating that everyone yearns for. Arxan is a place like this. The beauty of Arxan is everlasting regardless of the changing of four seasons. Bestowed by nature, its spectacular seasonal landscape and mountains are just beyond word. Arxan is a crucial destination for the remended travelling route, China Inner Mongolia Arxan — Hailar — Manzhouli. It is also the joint of the four prairies across the SinoMongolian border, where people gravitate towards the exotic atmosphere mixed with Chinese, Russian, and Mongolia elements. As a historic site for the Yitian Battle, Arxan still embodies the spirit of Genghis Khan. Walking into Arxan, you will be amazed by a kaleidoscope of geous colors all the year round the Spring azaleas blooming red in the snow, the Summer sea wavering blue in the breeze, the Autumn leaves painted in yellow covering volcanic traces, and the Winter woods shining white on the vast alpine snowscape. Hinggan League Arxan city is situated in the far eastern area of Inner Mongolia Autonomous Region. Its full name Haren Arxan means hot holy water in the Mongolian language. Arxan is a tourism city in the northern frontier with a blend of large forest, grand prairies, vast snowfield, heaven lake cluster, thermium, as well as volcanic cluster. It is a rare and unique ecotourism base filled with healthy sunshine, clean air and unspoiled green. Nestled close to the country39。s Day. More and more young Chinese people begin to celebrate this day in a very similar way as that in western countries. Fewer people than ever will gaze at the heavens on Saturday to pick out the two stars shining bright on either side of the Milky Way, that is, if people even know on which day Qixi falls. There are ready reminders dotted about, in the form of big ads saying Sales on Chinese Valentine39。同時在實際中不斷的積累經(jīng)驗，以設計出價廉物美的模具。閉合時，同樣在導柱和導套的導向作用下通過頂柱使頂桿先于型腔復位。 ③ 工藝參數(shù)的選擇和調(diào)整 根據(jù)工藝手冊中推薦的工藝參數(shù)初選溫度，壓力，時間參數(shù)，調(diào)整工 藝參數(shù)時按壓力，時間，溫度這樣的先后順序變動。這種情況，定模各動模的導柱和導套孔先不加工，先將型腔和型芯鑲塊加工好，然后裝入定模和動模內(nèi)，將型腔和型芯之間墊片法或工藝定位器法保證壁厚，動模和定模合模后用平行夾板夾緊，鏜投影導柱和導套孔，最后安裝動模和定模上的其它零件，另一種是已有導柱導套塑料模架的。動模帶動塑料制品從型腔中脫離，頂針板 3 推動面針板 4 向前移動。 故 F鎖＞ pA=80Mpa 2535 mm3 選定的注塑機的壓力為 90TON，滿足要求。定位作用：為避免裝配時方位搞錯而損壞模具，并且在模具閉合后使型腔保持正確形狀，不至因為位置的偏移而引起塑件壁厚不均。 若頂出部位需設在塑件使用或裝配的基準面上時，對不影響塑件尺寸和使用， 一般頂桿與塑件接觸處凹進塑件 ；否則塑件會出現(xiàn)凸起，影響基面的平整。這樣做同時可實現(xiàn)盡量降低 入水與出水的溫度差的原則。 3）分流道的設計 分流道在設計時應考慮盡量減小在流道內(nèi)的壓力損失和盡可能避免熔體溫度的降低，同時還要考慮減小流道的容積。澆注系統(tǒng)的設計是否合理不僅對塑件性能、結(jié)構(gòu)尺寸、內(nèi)外在 質(zhì)量等影響很大，而且還與塑件所用塑料的利用率，成型生產(chǎn)效率等有關。z/2 式中： Ls塑件外型徑向基本尺寸的最大尺寸（ mm） Ls塑件內(nèi)型徑向基本尺寸的最小尺寸（ mm） Hs塑件外型高度基本尺寸的最大尺寸（ mm） Hs塑件內(nèi)型深度基本尺寸的最小尺寸（ mm） X修正系數(shù)取 ~ Cs塑件中心距基本尺寸的平均尺寸（ mm） △ 塑件公差（ mm） 型腔尺寸 型芯尺寸 注射模設計說明書 7 四 、模具結(jié)構(gòu)方案的確定 分型面的確定 塑料在模具型腔凝固形成塑件，為了將塑件取出來，必須將模具型腔打開，也就是必須將模 具分