200920582 九、發明說明： 【發明所屬之技術領域】 本發明涉及-種發泡塑膠射出方法及其射岭置， 指以射出成型方法和裝置生產發泡塑膠。 f 【先前技術】 發泡塑膠的成型-般是向—個裝有螺杆的送料管内同時送 入塑膠並注人氣體，送料管上裝有加熱裝置，使塑膠融化，在螺 杆的攪拌下，融化的塑膠與氣體充分混合，形成内含氣泡的塑膠 融液。融祕送料管的前端輸出，_具後冷卻成型。由於發泡 塑膠製造難巾必齡螺杆叹速持續峨轉下保魏融的娜 與氣體均⑽混合且料管中保持均勻的動，否職泡在塑 勝中的溶解就會不均勻献發生膨m現象，此時物料的成型將會 不穩定。由於發泡塑膠的這一特點’一般只適合播塑成型法，適 合制造型材產品。 對於-般的注射成型產品，以目前敝麵顧乎都無法使 包成型。注射成賴械不適鱗_膠的驗在於注射機構 疋柄-模進仃生產，每注射一模就要求塑膠融液的輸入有停頓 ，而發泡瓣職的綱生成和送進必須是賴的，這樣才能保 持塑膠中氣體穩定的融融及物料壓力的穩定，使物料内的氣泡均 =以保證產品的品質。-旦停頓，容㈣_力就會發生變化， 氣體將無法持續均勻的進入及融融在塑膠中，殘留的塑膠融液内 的氣泡立即膨脹，破壞容腔⑽壓力環境，使下—模歸融液無 5 200920582 、私# "兩者的矛盾無法調和 '然而，由於原材料價格的飛 娜㈣原獅又不降储觀賴雜 而目 二見實生產存在對發泡塑膠的射出成型方法和設備的需求 j子在的射出發泡技術也無法有效的解決此一問題。 【發明内容】 膠射切财麟的上賴點，提供—射靠的發泡塑 > 士出成1方法及其設出裝置。 本發明所述的發泡歸射出成型方法包含以下步驟： 1. 注入轉、氣體至加賴筒’通過加熱和螺域拌，令前 述__並與前·體混合職混奴發泡轉融液. 2. 將前述混合之發泡塑膠融液導入另-儲料機筒； 3. 將適合-次射出的容量的塑膠融液壓人射出機筒，同時對 儲料機相纳進㈣力控制和娜，轉 内壓力穩定； 4. 對射出機筒加壓，射出成型； 5. 測量射出機筒的當次射出量、儲料機筒的當次壓出量、加 料機筒的當前輸出速度； 6. 按照射出機筒的當次射出量，調整儲料機筒的下次壓出量 使之與射出機筒的當次射出量相等；並且調整加料機筒上 螺杆的轉速以控制塑膠的加入速度，同時調整進氣速度以 配合^膠加入速度，以保證氣體在塑膠中的均勾度，使加 料機筒的輪出速度與儲料機_下次壓出量相適配。 6 200920582 本發明所述的發泡塑膠射出 出成難置，包括—_、± ㈣專収備發泡塑膠射 的加料機筒，加龍—ΓΓ塑膠、氣體以形成含氣泡塑膠融液 料機筒的内腔裝t 氣裝置、料斗、加熱裝置，加 的前端連__ ;加料機筒内腔 量_構H ____、壓出 的内肢：：=:容腔的前端通過-止回閥連通射出機筒 機締端財喷嘴；料_、h.、、出L機構，射出 構、儲料機筒=所相_筒犧量測量機 輸氣裝置加料機_螺杆關服電機、 山、、進轧機構的中央控制器，所說的中件制哭比 出機筒的次射出#和 w mf ] a比較當射 況下輸出執人二 壓出量，在兩者不相等的情 °° 7 虎至儲料機筒的定量壓出機構#德& 下次壓出量與料_的# 構使·機间的 顯觸咖樣構，以控制 證、、、j同時峨進氣速度以配合塑膠加人速度，以保 ^娜巾的均自度，使加料機筒的輸丨速度無料 下次壓出量相適配。 獅Γ步’所獅簡機M的定麵域構财如下結構：儲 容腔内裝有1—環形支承座，第-活塞杆可滑動地安 2第絲座内，第—活塞杆與第一支承座密封配合，第一活 塞杆與容腔数__，容_物料進口緊靠所述的第一支承 座，第一活縣後部與油紅、油缸觸發開關配合。 200920582 進-步’所述的射出機筒的定量射出機構具有如下結構：射 «筒的射出容腔域有第二環形絲座，第二活塞杆可滑動地 文裝在弟二支承座内，第二活塞杆與第二支承座密封配合，第二 活塞杆與射出容腔壁之間有間隙，射出容腔的物料進口緊靠所述 承座H騎後部與勸純、縣油缸觸發開關 進—步’所述_料上較_於_容㈣壓力的壓 力檢測裝置和接收壓力檢測裝置的信物__整定量壓出 機構中的油缸壓力的壓力控讎置。通過控制儲料機筒内壓力， 可以進-步保持含氣泡塑膠融液内的氣泡穩紐和均勻度 品的氣泡密度均勻穩定。 又座 進一步，射出機筒前端通過攪拌裝置連接噴嘴。 所述的射出機筒的射出量測量機構和儲料機筒的壓出 機構是電位尺或光學尺。 為了簡化機械和控制，所述的射出機筒的定量射出機構盘儲 料機筒的定量壓出機構的容、 7之儲料容量讀糾蘭14 量。、有_財。儲料機筒 本七月通m儲料機筒作為㈣過渡站，細了射 =:=與發泡塑膠的連續式生成的矛盾，實現了發泡塑 促進環保，_==^制細，相節約塑膠， 現有的注_增刪㈣）_犧都是活塞式 8 200920582 的。注射料管的前端有喷嘴，活塞後部連接-液壓缸。活塞腔在 進料日^ ’依靠液態料的壓力使絲後退，以增大活塞腔的容積。 由於在注射時’料液不是完全被射出的’在活塞端面上總會殘留 物料，而活塞㈣鱗是前端注人式，因此，活塞端蝴近形成 匆料死角&處的物料總是留在活塞端面上，由此造成物料端面 、物料反化其-人’活塞的反復移動容易磨損容腔内壁，另一方 面活基驗雜與容腔縣韻，兩者之間必須有精柄尺寸 " 要求很向，由此，機简和活塞使用不長的時間就需要 大修’糾正活基與機筒内壁的配合尺寸，使用成本大增。最後， 活塞需要與·__，還造姐魏度慢，活^能低速在 機筒内推進，帥會顺機油壁。 ' 本^明的定量射出（塵出）機構的容腔的入料方式是後進式 的，保證了不存在物料死角，能有效地防止物料碳化。其次，活 土^、接i不存在摩擦、不需要密封，—方面降低了容腔壁加 ^:$要长另—方面消除了容腔壁的磨損，延長了機筒的使 用可。卩，還可以免除頻繁的大修’降低維護成本，提高生產效率。 最後本發明還销在提高注射錢時健容㈣不被磨損。 本1月的伽是提供了 —種可靠的發泡瓣射出成型方法及 ^出f，實現了發泡瓣_成型生產，產品的氣泡密度 』_咖卿娜罐、_、注射速度 快。 【實施方式】 200920582 下面結合附圖進一步說明本發明 貫施例一 參照第一圖： 本發明所述的發泡师射出成财法包知下步驟： 1·二:广至加料機筒，通過加熱和螺枰授拌:令前述塑 溶融亚觸魏體混合形成混紅發_膠融液· 2.將前述混合之發泡塑膠融液導人—儲料機筒.， 3:=:次射出的容量的嶋液壓入射出機筒，同時對儲料 /从内進—力控制和補償，保持儲料機筒容腔内壓力穩 疋，· 4. 對射出機筒加壓，射出成型； 5. ，罝射«筒的當次射出量、儲料機筒的當次壓出量、加料機 向的當前輸出速度； 6. =照射出機筒的當次射出量，調整儲料機筒的下次廢出量使之 ^射出機筒㈣次射出量鱗；並且罐加料機紅螺杆的轉 、以控制轉的加人逮度，同_整進氣速度以配合塑膠加入 、X保'^氣體在塑膠中的均勻度，使加料機筒的輸出速度 。儲料機騎下次壓出量相適配。 對於射出機筒的當次射出量與儲料機筒的當次壓 積的錄會在流道巾造細盈或斷流， 物料厂二機同無法做調節，造成加料筒無法連續運轉或是機器中的 %力條料獅賴，料破麵力控繼件，導致發泡塑膠 200920582 中的本 =包膨脹，或是氣體無法均勾與塑膠混合，打斷正常 毛明所述的發泡塑膠射 的加料機筒卜蝴_ 1上連财輸辭置tir塑膠融液 加料機筒的肉映壯士 j札凌置3科+、加熱裝置， 驅動機構κ 螺杆2，螺杆2連接旋轉驅動機構，該旋轉 機構包括伺服電機心減速機5、傳動裝置6。 轉 力::機筒i内腔的前端連通儲料機筒?的内 遇有彻酬、姆聰咖卜 祁輸 的：:==端通過，閥16連機筒“ _=== 有定量射出機構和射出量測量機構，射 .:::=:Γ_14_ 量測量_、 4、於1出詞賴構11、加料機筒1的螺杆2的伺服電機 3峨麟財央咖，職财央控制器比較 :射^機同Μ的當次射出量和儲料機筒7的當次壓出量，在兩者 目：的情况下輸出調整命令信號至儲料機筒7的定量壓出機構 贿料機筒7的下次壓出量與射出機筒14的當次射出量相等。所 Γ勺It控制器同時發出調整命令信號到加料機筒1上螺杆2的 狀=4和輸氣裝置3的進氣機構，以控制塑膠的加入速度， 2時調整進氣速度以配合塑膠加入速度，以保證氣體在塑膠中的 句句度’使加料機筒1的輸出速度與儲料機筒7的下次壓出量相 適配。 11 200920582 所說的中央控制器是微處理器，與其他部件電連接。 出量機筒14的射出量測量機構19和儲料機筒7的壓 峰。〜位尺㈣尺，或是其他糊量位移距離 所述的儲料機筒7的定量 量射出機構可以採用常規的 心規的4_射出機構的活塞 在機筒的容朗設置獄，触^ 、㈣觸 又罝活基叙容腔產生的 退致容腔擴大到定量，缺後、、舌宾<、丨格广 、、活基後 油缸 、， 里…、傻活基石亚到推壓油缸的觸發開關 推送活塞，使物料射出成型。 本發明通過設立儲料機筒作為中間過渡站，兼顧了射 队_歇_她_的歧成_，實現了發泡塑 >的射出法生產。擴展了發泡塑膠的顧範圍，可以節約塑膠， 促進環保，降低塑膠製品的成本。 / 實施例二 參照第一、二圖： 出 本實施例與實糊-的_在於所述的簡㈣7的定量壓 例 機構和所述的㈣機筒14的定量射出機構的改進，其餘與實施 —相同。 ' 所述的儲_« 7攸量壓出機構具杨下結構：儲料機筒 7的容腔内裝有-第-環形支承座8，第—活塞杆9可滑動地安裝 在第-支承座8内，第—活塞杆9與第—支承座㈣封配合，第 〜活塞杆9與容腔壁之間有間隙，容腔的物料進口緊靠所述的第 12 200920582 9 ι〇"^ι〇 ^、，機筒14的疋量射出機構具有如下結 Η的射出容_裝有第二環形支承座17，第二活塞杆15可= 地安裝在第二支承座17内，第二活塞杆Η鱼第 動 ===塞杆15與射出容腔壁之間_，__ = Μ、頂^ :簡物與頂推油虹 為了簡化機械和控制，所述的射出機筒14的定量射出機構愈 儲2機筒7的定量壓出機構的容腔、活塞杆具有相同尺寸。儲料 機同7之儲料容量大於射出機筒14的容量。 , 現有的注塑機上的定量射出⑽出）機構的機筒都是活 的。注射料管㈣猶喷嘴，後部連接—液麻。活爽腔在 進料時’依靠液態料的壓力使活塞後退，以增大活塞腔的容積。 由於在左射時，料液不是完全被射出的，在活塞端面上總會殘留 物料’而活塞腔的進料是前端注人式，因此，活塞端面附近形成 物料死角’此處的物觸是留麵塞端社，由此造絲料端面 的物料兔化。其次，活塞的反復移動容易磨損容腔内壁，另一方 面^塞腔依#活塞與容腔壁來密封’兩者之間必須有精確的尺寸 配合’加工要求很高，由此，機筒和活塞使用+長的時間就需要 大修’糾正活塞與機勒壁的配合尺寸，使職本大增。最後， 活基需要賴制壁密封，還造成注射速度慢，活塞只能低速在 機筒内推進，否則會刮傷機筒内壁。 13 200920582 本實施例的定量射出（壓出）機構的容腔的入料方式是後進 式的，保證了不存在物料死角，能有效地防止物料碳化。其次， 活塞杆與容腔壁不存在摩擦、不需要密封，一方面降低了容腔壁 加工精度的要求，另一方面消除了容腔壁的磨損，延長了機筒的 使用哥命，還可以免除頻繁的大修，降低維護成本，提高生產效 率。最後，本實施例還能夠在提高注射速度時保證容腔壁不被磨 損。 實施例三 參照第一、二圖·· 本實施例與實施例二的區別在於增加了儲料機筒7的容腔内 的壓力控制裝置，其餘與實施例二相同。 所述的儲料機筒7上還裝有用於檢測容腔内壓力的壓力檢測 裝置20和壓力控制裝置，壓力控制裝置接收壓力檢測裝置罚的 k唬並根據信號調整定量壓出機構中的油缸1〇壓力的。壓力檢測 I置20可以選用一壓力感測器。 當儲料機筒7内的設定壓力值與壓力檢測裝置20 (壓力感测 器）所測壓力在中央控制器23中經過比較有誤差時，中央控制器 23負責控制伺服閥21及伺服壓力閥22的油口方向a、B及其壓 力的大〗、使油缸1 Q的活塞杆作軸向伸縮使其增減儲料機筒7 内的壓力從而使儲料機筒7内壓力穩定在設定值内。 、通過控制儲料機筒7内壓力，可以進—步保持含氣泡塑膠融 液内的氣泡穩定性和均勻度，使產品的氣泡密度均勻穩定。 14 200920582 實施例四 參照第一、二圖： 了射出機筒14的攪拌 本實施例與實施例三的區別在於增加 裝置。其餘實施例三相同。 、觸14 ^_顿縣置13連射嘴12。賴拌裝置 3可以是葉輪式，也可叹其他常料流體流道觀裝置。 P使储料機筒的料均勻混合在穩定種力下進人射出機筒， 在射出機辦然會因為在簡是儲完料未能立即射出而氣 泡可能會膨脹或相互結合而降低氣泡的均勻程度，降低射出成型 時產品品質’因此射出機筒前端要裝攪拌裝置使含氣的塑膠射出 時，經過擾拌裝置再次的將含氣體的塑膠經過充分的授掉，以加 強混合效綠魏泡與麵_自絲確倾型品冑 嘴射出後進入模具. 、I丹由射 本說明書實施例所述的内容僅僅是對發日腦思的實現形式的 列舉’本發明的保護範_不應#被視為僅限於實施 ：、、 具體形式’本發0月的保護範圍也及于本領域技術人員根據: 構思所能夠想到的等同技術手段。 卷月 【圖式簡單說明】 第一圖係本發明的結構示意圖 第二圖係本發明的儲料機筒的容腔内壓力控制原理圖 【主要元件符號說明】 噴嘴12 加料機筒1 油缸1〇 壓出量測量機構^ 15 200920582 攪拌裝置13 射出機筒14 第二活塞杆15 止回閥16 第二支承座17 頂推油知：18 射出量測量機構19 螺杆2 壓力檢測裝置20 伺服閥21 伺服壓力閥22 中央控制器23 輸氣裝置3 伺服電機4 減速機5 傳動裝置6 儲料機筒7 第一支承座8 第一活塞杆9 16200920582 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a method for injecting a foamed plastic and a blasting device thereof, which are directed to producing a foamed plastic by an injection molding method and apparatus. f [Prior Art] The molding of foamed plastic is generally carried into a plastic feeding tube with a screw and a gas is injected into the feeding tube. The feeding tube is equipped with a heating device to melt the plastic and melt under the stirring of the screw. The plastic is thoroughly mixed with the gas to form a plastic melt containing bubbles. The front end of the fuse feed tube is output, and it is cooled after molding. Because of the foamed plastic manufacturing, the sigh of the screw must continue to sway, and the mixture of Wei and Rong is mixed with the gas (10) and the tube is kept evenly moving. The dissolution of the bubble in the plastic case will be unevenly distributed. When the m is expanded, the molding of the material will be unstable. Due to the fact that foamed plastics are generally only suitable for soot molding, they are suitable for the manufacture of profile products. For the general injection molding products, it is impossible to form the package at the present time. The injection is made into a discomfort scale. The inspection of the glue is based on the injection mechanism of the injection mechanism. The injection of the plastic melt is required to stop every injection, and the generation and delivery of the foaming valve must be relied upon. In order to maintain the stable melting of the gas in the plastic and the stability of the material pressure, the bubbles in the material are all = to ensure the quality of the product. - Once paused, the capacity (4) will change, the gas will not continue to enter and melt evenly in the plastic, and the bubbles in the residual plastic melt will immediately expand, destroying the pressure chamber (10), and the lower mold can be merged. Liquid no 5 200920582 , private # " the contradiction between the two can not be reconciled 'However, due to the raw material price of Fei Na (four) the original lion does not reduce the view of the reserve and the second to see the real production of injection molding methods and equipment for foamed plastic The injection foaming technology of the demand j can not effectively solve this problem. [Summary of the Invention] Glue-cutting Cailin's top point, providing - foaming plastic &y; The foaming and injection molding method of the present invention comprises the following steps: 1. Injecting a rotating gas into a gas-filling cylinder 'by heating and screwing the domain, so that the aforementioned __ is mixed with the former body and mixed with the foaming 2. The previously mixed foamed plastic melt is introduced into the other-storage barrel; 3. The plastic-melted hydraulic man with the capacity of the suitable injection is injected into the barrel, and the loader is subjected to the (four) force control. He Na, the internal pressure is stable; 4. Pressurize the injection barrel and shoot out; 5. Measure the current injection volume of the injection barrel, the current extrusion volume of the storage barrel, and the current output speed of the loading barrel. 6. According to the current injection quantity of the injection barrel, adjust the next extrusion amount of the storage barrel to be equal to the current injection amount of the injection barrel; and adjust the rotation speed of the screw on the feeding barrel to control the plastic The speed is added, and the intake speed is adjusted to match the speed of the rubber injection to ensure the uniformity of the gas in the plastic, so that the rotation speed of the feeding barrel is matched with the storage volume of the stocker. 6 200920582 The foamed plastic of the present invention is made into a difficult-to-set, including -_, ± (4) feeding cylinders for foaming plastic injection, Jialong-ΓΓ plastic, gas to form a bubble-containing plastic melter The inner cavity of the cylinder is equipped with a gas device, a hopper, a heating device, and the front end of the cylinder is connected __; the volume of the inner cylinder of the feeding machine is _H ____, the inner limb of the pressing body::=: the front end of the cavity passes the check valve Connected injection machine machine to end the financial nozzle; material _, h.,, out L mechanism, injection structure, storage machine cylinder = phase _ tube sacrifice measuring machine gas transmission device feeder _ screw off service motor, mountain, The central controller of the rolling mechanism, the middle part of the crying is compared with the second shot of the barrel # and w mf ] a compared when the output is controlled by the output of the two, the two are not equal. ° 7 The quantitative extrusion mechanism of the Tiger to the storage bin #德& The next extrusion amount and the material_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The speed is matched with the plastic adding speed to ensure the self-degree of the towel, so that the feeding speed of the feeding barrel is not matched with the next pressing amount. The fascinating domain of the lion's lion's lion's machine M is structured as follows: the storage chamber is equipped with a 1-ring bearing seat, the first piston rod is slidably mounted in the second wire seat, and the first piston rod and the first A bearing seat is sealingly matched, the first piston rod and the number of the cavity are __, and the material inlet is abutted against the first bearing seat, and the rear part of the first living county is matched with the oil red and the cylinder trigger switch. 200920582 The quantitative injection mechanism of the injection barrel described in the above-mentioned step has the following structure: the injection cavity of the injection cylinder has a second annular wire seat, and the second piston rod is slidably mounted in the second support seat. The second piston rod is in sealing engagement with the second bearing seat, and there is a gap between the second piston rod and the wall of the injection cavity, and the material inlet of the injection cavity abuts against the rear seat of the bearing seat H and the perm pump, the county cylinder trigger switch - The pressure detecting means of the pressure-receiving means and the pressure-receiving means of the cylinder pressure in the whole amount of the pressing means. By controlling the pressure inside the hopper, it is possible to keep the bubble stability and uniformity of the bubble-containing plastic melt in a step-by-step manner evenly and stably. Further, the front end of the injection barrel is connected to the nozzle by a stirring device. The injection amount measuring mechanism of the injection barrel and the extrusion mechanism of the stocker cylinder are a potentiometer or an optical scale. In order to simplify the mechanics and control, the quantitative injection mechanism of the injection barrel of the quantitative storage mechanism of the cartridge storage cylinder reads the volume of the storage unit. There is _ wealth. The storage machine cylinder is used as the (four) transition station in July. The fine injection =:= contradiction with the continuous generation of foamed plastic, and the foaming plastic promotes environmental protection, _==^ is fine. Phase saving plastic, the existing note _ add and delete (four)) _ sacrifice is piston type 8 200920582. The front end of the injection tube has a nozzle, and the rear of the piston is connected to a hydraulic cylinder. The piston chamber is retracted by the pressure of the liquid material on the feed day to increase the volume of the piston chamber. Since the material is not completely ejected at the time of injection, the material on the end face of the piston will always remain, and the piston (4) scale is the front end injection type. Therefore, the material at the end of the piston is almost in the form of a dead corner & On the end face of the piston, the material end face and the material reversing the repeated movement of the human piston are easy to wear the inner wall of the cavity. On the other hand, the living base is checked and the cavity is magnified. " The requirements are very good. Therefore, the use of the machine and the piston for a short period of time requires overhaul to correct the fit of the living base and the inner wall of the barrel, and the cost of use is greatly increased. Finally, the piston needs to be with ___, and it is also slow to make the sister Wei, and the live ^ can be pushed in the barrel at a low speed, and the handsome will follow the machine wall. The filling method of the cavity of the quantitative injection (dust out) mechanism of the present invention is backward-type, which ensures that there is no material dead angle and can effectively prevent material carbonization. Secondly, there is no friction between the living soil and the ground, and there is no need for sealing. In terms of reducing the wall of the cavity and adding ^:$ to lengthen the other side, the wear of the cavity wall is eliminated, and the use of the barrel can be extended. Oh, you can also avoid frequent overhauls, reduce maintenance costs and increase productivity. Finally, the invention is also sold in the case of improving the injection money (four) is not worn. This January gamma provides a reliable foaming injection molding method and the realization of the foaming flank _ molding production, the bubble density of the product 』 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ [Embodiment] 200920582 The following is a description of the first embodiment of the present invention with reference to the accompanying drawings: The foaming division of the present invention is produced by the method of the invention: 1. 2: wide to the feeding barrel, through Heating and snail mixing: the above-mentioned plastic melted sub-contact Wei body is mixed to form a mixed red hair _ gel melt liquid. 2. The previously mixed foamed plastic melt is introduced into a storage machine. 3:=: The 嶋 hydraulic pressure of the injected capacity is incident on the barrel, and at the same time, the storage/internal force-force control and compensation keeps the pressure in the chamber of the hopper barrel stable. 4. Pressurize the injection barrel and shoot out; 5. 罝射«The current injection volume of the cylinder, the current extrusion volume of the storage barrel, and the current output speed of the feeder; 6. = illuminate the current injection volume of the barrel, adjust the storage barrel The next amount of waste is such that it shoots out the barrel (four) shots of the scale; and the red screw of the tank feeder rotates to control the rotation of the person, the same as the intake speed to match the plastic, X Bao' ^ The uniformity of the gas in the plastic, the output speed of the feeding barrel. The stocking machine is fitted with the next extrusion amount. The recording of the current injection volume of the injection barrel and the current pressure of the storage barrel is fine or broken in the flow path, and the material factory cannot adjust the same, resulting in the continuous operation of the feeding cylinder or The 5% of the machine's force lion ray, the broken face force control relay, resulting in the expansion of the foam plastic 200920582 package, or the gas can not be hooked with the plastic, interrupting the foam described in normal hair Plastic shot feeding machine tube butterfly _ 1 on the financial loss of the tir plastic melt feeding machine barrel of the meat strong warrior j jazzling set 3 +, heating device, drive mechanism κ screw 2, screw 2 connected rotary drive mechanism The rotating mechanism includes a servo motor core reducer 5 and a transmission device 6. Transfer force: The front end of the inner cavity of the barrel i is connected to the storage machine barrel. The internal encounter has a remuneration, and the Mongcai 祁 祁::== end pass, valve 16 connected to the barrel " _=== Injection mechanism and injection quantity measuring mechanism, shot:::=:Γ_14_ Measured _, 4, in 1 赖 构 11, the servo motor of the screw 2 of the loading machine 1 3 峨麟财央咖,职财央Comparing with the controller: the current injection amount of the same machine and the current extrusion amount of the storage tank 7, in the case of both: output the adjustment command signal to the quantitative extrusion mechanism of the storage drum 7 The next extrusion amount of the bribing barrel 7 is equal to the current injection amount of the injection barrel 14. The controller of the It is simultaneously issued an adjustment command signal to the screw 2 of the charging cylinder 1 = 4 and the gas delivery device The air intake mechanism of 3 controls the joining speed of the plastic, and the air intake speed is adjusted at 2 o'clock to match the speed of the plastic joining to ensure the degree of gas in the plastic 'the output speed of the feeding barrel 1 and the storage barrel 7 The next press-out amount is adapted. 11 200920582 The central controller is a microprocessor that is electrically connected to other components. The emission measurement of the output barrel 14 The pressure peak of the structure 19 and the hopper barrel 7. The square foot (four) ruler, or other measurable displacement distance of the hopper barrel 7 can be a conventional 4 gauge injection mechanism. The piston is set in the pocket of the barrel of the barrel, and the (4) touch and the 退 罝 叙 叙 叙 叙 叙 叙 扩大 扩大 扩大 扩大 , , , , , , , , , , , , , 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , It realizes the production of foaming plastics. It expands the scope of foamed plastics, saves plastics, promotes environmental protection, and reduces the cost of plastic products. / Example 2 refers to the first and second figures: The improvement of the quantitative injection mechanism of the simple (four) 7 and the quantitative injection mechanism of the (four) barrel 14 described above, the rest is the same as the implementation - the storage _« 7 压The mechanism has a poplar structure: the volume of the storage barrel 7 is filled with a - first ring support 8. The first piston rod 9 is slidably mounted in the first support seat 8. The first piston rod 9 is sealingly fitted with the first support seat (four), and there is a gap between the first piston rod 9 and the cavity wall. The material inlet is in close proximity to the 12th 200920582 9 ι〇"^ι〇^, the volumetric injection mechanism of the barrel 14 has the following ejection volume _ fitted with the second annular bearing seat 17, the second piston rod 15 can be installed in the second support seat 17, the second piston rod squid moves === between the plug rod 15 and the wall of the ejection chamber _, __ = Μ, top ^: simple and push oil rainbow Simplifying the machine and the control, the quantitative injection mechanism of the injection barrel 14 has the same size as the volume and the piston rod of the quantitative extrusion mechanism of the barrel 7. The storage capacity of the stocker 7 is greater than the capacity of the injection barrel 14. The cylinders of the quantitative injection (10) out of the existing injection molding machine are all alive. Injection tube (four) nozzle, rear connection - liquid hemp. The live cavity is retracted by the pressure of the liquid material during the feed to increase the volume of the piston chamber. Since the liquid is not completely ejected in the left shot, the material will always remain on the end face of the piston, and the feed of the piston chamber is the front end injection type. Therefore, the material dead angle is formed near the end face of the piston. The surface of the wire end material is rabbitized. Secondly, the repeated movement of the piston tends to wear the inner wall of the cavity. On the other hand, the cavity is sealed by the #piston and the cavity wall. 'There must be precise dimensional fit between the two'. The machining requirements are very high, thus the barrel and When the piston is used for a long time, it needs to be overhauled to correct the matching size of the piston and the machine wall, so that the cost is greatly increased. Finally, the living base needs to be sealed against the wall, and the injection speed is slow. The piston can only be pushed in the barrel at a low speed, otherwise the inner wall of the barrel will be scratched. 13 200920582 The feeding mode of the cavity of the quantitative injection (extrusion) mechanism of the present embodiment is a backward type, which ensures that there is no material dead angle and can effectively prevent material carbonization. Secondly, there is no friction between the piston rod and the cavity wall, and no sealing is needed. On the one hand, the processing precision of the cavity wall is reduced, on the other hand, the wear of the cavity wall is eliminated, and the use of the barrel is prolonged. Eliminate frequent overhauls, reduce maintenance costs, and increase production efficiency. Finally, this embodiment also ensures that the cavity wall is not worn away when the injection speed is increased. Embodiment 3 Referring to the first and second figures, the difference between this embodiment and the second embodiment is that the pressure control device in the cavity of the hopper barrel 7 is increased, and the rest is the same as in the second embodiment. The hopper barrel 7 is further provided with a pressure detecting device 20 for detecting the pressure in the cavity and a pressure control device. The pressure control device receives the penalty of the pressure detecting device and adjusts the cylinder in the quantitative pressing mechanism according to the signal. 1 〇 pressure. Pressure detection I set 20 to use a pressure sensor. When the set pressure value in the stocker cylinder 7 is compared with the pressure measured by the pressure detecting device 20 (pressure sensor) in the central controller 23, the central controller 23 is responsible for controlling the servo valve 21 and the servo pressure valve. The oil port direction a, B and its pressure are large, and the piston rod of the cylinder 1 Q is axially expanded and contracted to increase or decrease the pressure in the stocker cylinder 7 so that the pressure in the stocker cylinder 7 is stabilized at the setting. Within the value. By controlling the pressure in the storage barrel 7, the stability and uniformity of the bubbles in the bubble-containing plastic melt can be maintained step by step, so that the bubble density of the product is uniform and stable. 14 200920582 Embodiment 4 Referring to Figs. 1 and 2: Stirring of the injection barrel 14 This embodiment differs from the third embodiment in the addition of the apparatus. The remaining embodiment 3 are the same. Touch 14 ^_Dun County to set 13 nozzles 12 . The simmering device 3 can be an impeller type or a sigh of other conventional fluid flow path devices. P makes the material of the hopper barrel evenly mix and enter the barrel under the stable seed force. In the injection machine, the bubbles may expand or combine with each other to reduce the bubbles because the stencil is not immediately injected. The degree of uniformity reduces the quality of the product during injection molding. Therefore, when the front end of the barrel is to be equipped with a stirring device to inject the gas-containing plastic, the gas-containing plastic is again sufficiently transferred through the disturbing device to enhance the mixing effect. Bubble and surface _ from the silk indeed tilting product, the nozzle is injected into the mold. The content described in the embodiment of the present specification is only an enumeration of the implementation form of the invention. 'The protection model of the invention _ Should be considered to be limited to implementation:,, the specific form of 'the scope of protection of the present month is also based on the equivalent technical means that can be conceived by those skilled in the art. BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a schematic view of the structure of the present invention. The second drawing is a schematic diagram of the pressure control inside the cavity of the hopper of the present invention. [Main component symbol description] Nozzle 12 Feeding cylinder 1 Cylinder 1 Pressing volume measuring mechanism ^ 15 200920582 Stirring device 13 Injection barrel 14 Second piston rod 15 Check valve 16 Second bearing seat 17 Pushing oil: 18 Injection amount measuring mechanism 19 Screw 2 Pressure detecting device 20 Servo valve 21 Servo Pressure valve 22 Central controller 23 Gas delivery device 3 Servo motor 4 Reducer 5 Transmission 6 Storage barrel 7 First support 8 First piston rod 9 16