模 以下即為習知成 200846163 九、發明說明·· 【發明所屬之技術領域】 本务明為一種發泡塑膠射出成型方法及其射出穿置，主 要指一種可藉由加壓使塑料與氣泡穩固混合，並可藉由壓力控 制氣泡大小，使本發明可具較佳品質及製品變化性。 【先前技術】 發泡塑膠產品主要係於塑膠混合氣泡，並可依據塑料種 類及氣泡體積、密度不同作為各種應用，例如建材、斷熱材、 輕質材料、緩衝材…等。 習知歸加工成型發泡之方式—般具有射出、擠出 =壓延、粉末、彻枝，並術式為喻佳的· 方式，而就習知發泡_射出成型方法而言， 型步驟之一： a•注入塑料；將塑膠原料注人_之容室内。 b. 2料溶融’將容室内之塑.融呈液態。 C.注入氣體或發泡劑觀融之塑_料合；將如礼氣 ^化碳4氣體或發泡劑注人前述容室内，赫 溶田虫之塑料适人、， 1/、 _成型：述：二數氣泡形成發泡， 腔成型。 之發泡塑膠由容室射出至模 料斗2’、 習知配合前封法之發_射出結構 請參閱第八圖，係 ，主要包括一料管1，、— ‘螺桿3，、一注氣製置4,、 200846163 -噴嘴5’，其中該料斗2,、注氣裝置4，連通料f i，，並注氣 裝置4,係可導入發泡劑或高壓氣體（圖中未標示），·又^桿^ 具授拌葉31’，並設於料管i，之容室u，内；又 二 51’ ’並設於料管i’之容室u，前端’且未射出動作時該： 閉合_合容室11，’又該料管丨，具加_置（圖中未標 示）〇 ’、 *當成型動作時係於料斗2，注入塑料至容室u，_中未 標示），並由加織置加齡融使塑料呈液_狀，又於注氣 裝置4’注人發_錢體至容室心，並藉蝴桿3,旋轉^ 授拌葉31’勝’使得由發關分難生之_衫壓氣體與 W之塑觀合，並當混合—段時間錢體與轉均勻混合後 再令料管丨，前進’並令喷嘴5，之通道51，打開，並使螺桿3, 可輸送混合之發泡轉㈣嘴5,注人模具6,成型。 刖述令發_分解產生鐘之化學發财式將使發泡塑 膠具有毒性及具不易时之缺點，又直接注氣之物理發泡方式 '使1缝膠#毒及可回收之優點，但前述發泡成型方式仍 具有以下缺失： L塑料與氣體僅於料;^ i，之容室U，内由餅方式一次 混合，使得氣泡不易均勻分佈於塑料内。 2.容室11，内之塑料，氣體結合力不足，易造成如第九圖 所不塑料7’不能翻包覆氣泡8,，並造成相鄰之氣泡 200846163 8’互相結合形成大氣泡，將降低製品之品質，且不利 微孔發泡作業。 ： 3·攪拌混合方式不易控制發泡塑膠之氣泡比例及大小， 成品穩定性不佳。 4·攪拌混合方式無法形成高壓高密度的發泡混合體。 5·然法將較大量的高壓氣體混合熔融的塑料内，因高壓The following is the syllabus of the syllabus 200846163 IX, the invention description · · The technical field of the invention belongs to the present invention is a foam plastic injection molding method and its injection through, mainly refers to a kind of plastic can be firmly mixed with bubbles by pressure The pressure can be controlled by the pressure, so that the present invention can have better quality and product variability. [Prior Art] Foamed plastic products are mainly used in plastic mixing bubbles, and can be used for various applications depending on the type of plastic and the volume and density of bubbles, such as building materials, heat-insulating materials, lightweight materials, cushioning materials, etc. Conventionally, the method of forming and forming foaming generally has the methods of injection, extrusion = calendering, powder, clearing, and processing, and in the conventional foaming_injection molding method, one of the types of steps: a•Inject plastic; inject plastic materials into the room. b. 2 material melting 'will plastic the room. Melt in a liquid state. C. Injecting gas or foaming agent to melt the plastic _ material; will be like a ritual gas 4 gas or foaming agent into the above-mentioned room, Herong worms plastic suitable for people, 1 /, _ molding: Description: Two numbers of bubbles form foaming and cavity forming. The foamed plastic is injected from the chamber to the mold hopper 2', and is known to cooperate with the front seal method. For the injection structure, please refer to the eighth figure. The system mainly includes a material tube 1, - - 'screw 3, one gas injection 4, 200846163 - nozzle 5', wherein the hopper 2, the gas injection device 4, the communication material fi, and the gas injection device 4, can be introduced into a foaming agent or high pressure gas (not shown), And ^ rod ^ with the mixing leaf 31', and is placed in the material tube i, the chamber u, inside; and two 51' ' and is placed in the chamber u' of the chamber u, the front end 'and the action is not shot : Closed_combination chamber 11, 'The pipe is 料, with _ set (not shown) 〇', * When the molding action is attached to the hopper 2, the plastic is injected into the chamber u, _ is not marked) And by adding the woven ageing to make the plastic liquid _ shape, and in the gas injection device 4' note the human hair _ money body to the chamber heart, and by the butterfly rod 3, rotating ^ to teach the mixed leaf 31 'win' The haircut is difficult to produce _shirt pressure gas and W plastic combination, and when mixed - the time and money are evenly mixed and then the tube is smashed, forward 'and let the nozzle 5, the channel 51, open, and Make the screw 3, The mixed foaming (four) mouth 5 can be transported, and the mold 6 can be injected to form.刖 令 令 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The aforementioned foam molding method still has the following defects: L plastic and gas are only in the material; ^ i, the chamber U is mixed once by the cake method, so that the bubbles are not easily distributed evenly in the plastic. 2. The plastic inside the chamber 11, the gas binding force is insufficient, and it is easy to cause the plastic 7' not to be covered with the bubble 8 as shown in the ninth figure, and the adjacent bubbles 200846163 8' are combined to form a large bubble, which will Reduce the quality of the product, and it is unfavorable for microcellular foaming. 3) Stirring and mixing method It is not easy to control the proportion and size of the bubble of the foamed plastic, and the stability of the finished product is not good. 4. The stirring and mixing method cannot form a high-pressure and high-density foaming mixture. 5. The method of mixing a large amount of high-pressure gas into the molten plastic due to high pressure
氣體無法與塑料均勻混合，因而無法產生高密度發泡 塑膠產品。 針對月ίι述料官1容室η’内混合不均勻情形，如美國專利 第6284810號專利係於其螺桿設計斷開之螺紋，使得輯開螺 紋可助於切破氣泡，但該結構亦僅能使塑料、氣容室内作 一次混合，仍具有混合效果不理想缺失。 八丁罔The gas cannot be uniformly mixed with the plastic, so it cannot produce a high-density foamed plastic product. For the month ι ι 述 述 1 1 1 1 η η η η η η η η η η η η η η η η η η η η η η η η η η η η η η It can make a mixture of plastic and air chamber once, and still has an undesirable lack of mixing effect. Eight Ding
WW〇〇〇W4現寻利具送料管、螺桿、料斗， 並料斗連it簡管，㈣桿設簡如，又於祕管前端連 管體至下方娜f ’且於碰上設置落·_，又射料管且 ^腔、逆止閥、推桿，並推桿由射料祕縣前進，又射料 2端具射嘴，並射嘴具__，並該射嘴_針由 曲柄、連桿、射嘴開關油缸連動。 當成_作時_及發_由料斗導人送料管内，並於 加熱使塑植融並與氣體混合，再打開轉開關闕、 __針，使送觸桿觀合氣體之發_膠輸送至 7 200846163 射料管的貯料腔内，而該不斷輸送之發泡塑踢將推動推桿後 退’直到設定貯量為上，·又再關閉落料開闕闕，並當射嘴虚模 =合時由射嘴删油缸帶動連桿、曲柄打開射嘴開關闕針，、 再7射料油缸推動推桿前進使發泡塑膠由射嘴射出。 前述結構因額外增加-具貯料腔之射料管，可增加一次 成型之貯㈣及射出量，然而其成型方式仍具有以下敝：人 a. 塑料與氣社要於補如由螺桿縣混合，仍具有 混合均勻度不佳情形。 〃 b. 因貯料腔之壓力須小於螺桿送料之推力，使得該混人 氣體與塑料之發泡塑膠才可導入射料管之貯料腔7 並使推桿可後退’但將造成塑料與氣體之結合麼力不 足導致塑料不能穩固包覆氣泡，並導致相鄰氣泡互相 結合形成大氣泡而影響製品之品質。 c. 發泡塑膠導人射_之_會由送料管及螺桿間 向後逸出’造成塑料内氣泡蚊不足情开；。 d. 不易控制發泡塑膠之氣泡比例及大小，成品穩定性不 佳。 6•當射料管與模具接合時須同時令射嘴開關油飯動作， 並使射嘴開Μ針可開啟射嘴，細該㈣控制 嘴開關油缸與機械作動位移之射料管不易同 易造成氣體、發泡塑溢出於模具外側及射出作業不順 200846163 暢情形。 【發明内容】 本發明之目的在一種可藉由加壓使塑料與氣泡穩固混 S ’並可藉由壓力控制氣泡大小以配合需求製造多種不同密度 之發泡塑膠。 本發明之成型方法包含以下步驟： 1·庄入塑料、氣體至容室，令前述塑料熔融並與前述氣 體混合形成混合之發泡塑膠。 2·前述混合之發泡塑膠導入另一容室。 3·對含有前述混合之發泡塑膠的前述另一容室加壓。 4·射出成型。 前述1.注入塑料、氣體至容室，令前述塑料溶融並與前述 氣體混合形絲合之魏轉步縣設定前姐人塑料、氣體 至容室的塑料與氣體_，並該氣體可為氮氣、二氧化碳或其 他氣體，又該麵齡加熱缝形成液_狀，由授摔或 :、他方式使魏體可触融之麟混合，並使塑料可包覆氣體 =成第-次混合之發泡轉，又前述腿、氣體可同時或不同 時注入容室内’又第-次混合之祕及高壓氣體比例將決定.發 泡倍數。 2.前述混合之發泡塑膠導入另一容室步驟為將該混合之 發泡塑膠由通道導人另1室内，而縣—容室可以有設定背 9 200846163 壓使第一次混合之發泡塑膠可穩定導入另一容室，且導入後人 該另一容室呈密閉，又該容室具喷口，並噴口未射出時呈密閉 3·對含有前述混合之發泡塑膠的前述另一容室加壓步驟為 藉由加壓減少該另-容室之容積，及將第—次混合之發泡塑膠 依設定壓縮比例進行加壓，並迫使塑料與氣體更穩固均句結合 形成第一次混合之發泡塑膠，並可藉由設定加壓之壓力大小押 制氣泡大小，並壓力愈大時氣泡愈小。 4.射出成型步驟為加壓後瞬間令該另一容室之喷口打開， 亚令該另-容室内之第二次混合發泡塑膠由喷口射出至模具 成型。 本發明配合前述方法之射出裝置包括―第—次混合機構、 -加壓混合機構’並該第-次混合機構具第一容室，並該第一容 室具出Π ’並第-容室連設加熱裝置，又於第—容室内設置授摔 裝置；又加壓混合機構連通前述第—容室出口，並且第二容室， 而該第二容室出口連接嘴嘴，並於第二容室内設置活塞，並該活 塞可於第二容室陳復動作，而且塑料、氣體可導人第—容室内’ =料由加絲魏融且藉由轉裝置作第-次混合再導入第二 谷室，亚由弟二容=之活塞加壓作第二次混合再由噴嘴射出。 本發明配合前述方法夕紅 、出裝置包括一第一次混合機構、 一加壓混合機構，並該第一今、、" 置，其中料管具第-容室，、螺桿、注氣裝 、ζ 各至别方具出口，並於出口通 200846163 這位置設置逆蝴，又祕紐鱗斗，並補管設置純裝置； 又螺桿係為授拌製置，並設於料管之第一容室内，並於螺桿設置 擾拌葉’並由驅動裝置帶動旋轉；又注氣裝置連通料管第一容室， 亚具氣針、氣體分配^並可將外界氣料人料管之第—容室内； ，又加壓混合機構包括加壓座、加壓叙、活塞、喷嘴、噴嘴逆止闕: ‘開關裝置’其中加壓座具第二容室，並該第二容室人σ連通料管 出Π ’並具出π連射嘴’又於缚座設置壓城邮、定辦 置、溫度控繼置；又活塞設於第二容㈣，並騎塞連設加壓 缸’並由加壓紅帶動往復作動；又嘴嘴設於加壓座之出口位置， 亚具喷π與第二容室之出口連通，又於噴嘴設置喷嘴逆止闕、開 關裝置’並該喷嘴逆止闕設於喷口之通道上，又開關装置具闕針、 淨性讀’而關針具_部’並該稱部設於對射嘴逆止闕 -側’並_針由雜元件爾而使爾獅頂射嘴逆止闕. 籲藉之使塑料可由料斗注入料管之第—容室，並高壓氣體由注氣裝 置注入料管之第—容室内，又塑料由料管之域裝置加熱溶融呈 液態雛，並藉由轉_賴拌葉可對_、㈣作第一次混 絲成發泡卿’並使第-次混合之發泡轉可由螺桿輸送至加 壓混合機構之第二容㈣，喊出口通道之逆止閥可防止第一次 混合之發泡麵及《逆流；又令加壓缸動作使活塞位移，並使 谷室之空間減小使第二容室内之發泡塑膠受擠壓而作第二次混 合，又籍泡塑膠經第二次混合可使氣體與塑料更穩固均勾結 200846163 合，並壓力愈大時可魏騎小，並_先奴的瓣與高壓氣 體的發泡紐縮比舰行魏’可形成不同需求的發泡倍數的發 泡體形成微孔發泡；又令射蚊置位移使喷嘴姉至模座時可由 杈座抵壓卿裝置之閥針，並使閥針抵射嘴逆止閥使嘴口之通 道開啟’再令加壓㈣作使前移，使發泡瓣可㈣嘴射出， 而該喷嘴位移至模座時可藉由機械式動作使喷嘴逆止閥同步開 啟，可具較佳動作穩定性。 【實施方式】 請參閱第一圖，本發明之成型方法包含以下步驟： .1· /主入塑料、氣體至容室，令前述麵熔融，並與前述 氣體Jtb合形成混合之發泡塑膠。 2·前述混合之發泡塑膠導入另一容室。 3·對含有前述混合之發泡塑膠的前述另一容室加壓。 4射出成型。 刚述1·注入塑料、氣體至容室，令前述塑料熔融，並與前 述氣體混合形成混合之發泡塑膠步驟為將設定比例之塑料、高 壓氣體注入容室内，並該高壓氣體可為氮氣、二氧化碳或其他 氣體，又該塑料藉由加熱形成液態稠狀，再藉由擾拌或其他方 式使得氣體可與炼融之塑料混合，並使塑料可包覆氣體形成第 一-欠混合之發泡塑膠，又前述塑料、氣體可同時或不同時注入 容室内’又第-:欠混合時可依後續的需要將需要壓縮的高壓氣 12 200846163 體注入谷室内以供後續加壓使用，並依需要發泡的比例來、、主入 高壓氣體。 ' 2·前述混合之發泡塑膠導入另一容室步驟為將該混合之 發泡塑膠由通道導入另一容室内，而該容室可設定各 種背壓使 該混合之發泡塑膠可依需要穩定導入另 另一容室呈密閉，又該另一容室具噴口 閉0 一容室，且導入後令該 ，並噴口未射出時呈密 3.對含有前述混合之發泡塑膠的前述另一容室加壓步驟 為藉由加壓減少前述另一容室之容積，並將第一次混合之發泡 塑膠依設定壓縮比例加壓，使第一次高壓氣體及塑料結合之於 泡塑膠緊密壓合，並迫使塑料與氣體更穩固均勻結合形成第二 次混合發泡塑膠，並可藉由設定加壓之壓力大小控制發泡塑膠 内氣泡大小，當壓力愈大時氣泡愈小，並依注入高壓氣體與塑 料比例來進行壓縮。 4·射出成型步驟為加壓第二次混合後瞬間令該另一容室之 喷口打開，並令該另一容室内之第二次混合發泡塑膠由喷口射 出至模具成型。 請參閱第二圖，本發明配合前述方法之第一實施例射出裝 置包括一第一次混合機構5、一加壓混合機構6，並該第一次 混合機構5包括料管51、螺桿52、注氣裝置53，其中料管51 具第一容室511，並容室511前方具出口 512，並於出口 512 13 200846163 通逼位置設置逆止閥513，又於料管51連設料斗514 ，並於料 b 51 ,又置加熱裝置（圖中未標示），又螺桿係為攪拌裝置並 叹於料官51之第一容室511内，並於螺桿52設置攪拌葉521， 並由驅動裝置（圖巾未標示）帶動旋轉；又注氣裝置連通料 咏弟谷至511並具氣針531、氣體分配器532，並可將 外界氣體導入料管51之第一容室511内。 加壓混合機構6包括加壓座61、加壓缸62、活塞63、喷 實64、喷嘴逆止閥65、開關裝置6β，其中加壓座具第二 谷至611，亚該第二容室611入口 612連通料管5ΐι出口沿， 亚具出口 613連通噴嘴64，又於加壓座61設置壓力感測器 614、定位裝置615、溫度控置616丨又活塞⑹設於第二 容室阳内，並該活塞63連設加壓缸62，並由加壓缸似帶 動往復作動；又嘴嘴64設於加壓座61之出π 613位置，並具 贺口 641與第二容室611之出口 613連通，又於嘴嘴⑽設置 貝驚逆止閥65、開關裝置66，並該喷嘴逆止閥65設於喷口 ⑽之通迢上’又_裝置66具閥針66卜彈性元件_，而 謂針661具頂持部66u，並該頂持部剛設於對應喷嘴逆 止閥65 -侧，並該閥針661由彈性树咖頂持而使頂持部 6611不抵壓喷嘴逆止閥邸。 齡閱第三圖，成型作業時塑料7可由料斗514注入料管 51之弟-容室511，並高觀體由注氣裝置注入料管μ之 14 200846163 弟-谷至511内（如箭頭所示），且對應製品需求設定注入塑料 7、乳體比例’而該氣體可為氮氣、二氧化碳或其他適當氣體， 又塑料^由料管51之加熱襄置（圖中未標示)加熱熔融呈液態 雜’並藉由螺桿52旋轉使授拌葉521可對塑料7、氣體作 第一次混合形成具氣泡8之發泡塑膠。 請參閱第四圖，本發明第一次混合之發泡塑膠可由螺桿 52輸送至加壓混合機構6之第：容室611内，且加壓⑽可 對活塞63辭適當壓力，使得第-次混合具塑料7、氣泡8 之發泡塑膠可藉由㈣穩定導入第二容室611内，而該出口 512通道之逆止閥513可防止第一次混合之發泡塑膠及氣體逆 流0 請參閱第五圖，本發明加壓混合作業係令加壓缸记動作 使活塞63位移，並使第二容室611之空間減小使容室6ιι内 之發泡塑膠受賴而作第二次混合，並該活塞63位移距離可 預先對應製品需求設置，並可由壓力感測器614或定位裝置 615控制活塞63位移之距離以控制容室611之壓力，又該發 泡塑膠經第二次混合可使氣泡8與塑料7更穩固結合，並壓力 恧大時可使氣泡8愈小形成穩固混合高倍數發泡體，又第二容 室611内加壓時因第二容室611之入口 612連接通道具逆止閥 513，並出口 613具喷嘴逆止閥65，使得第二容室611可為密 閉狀並具設定壓力，且可再藉由溫度控制裝置616使第二容室 15 200846163 6Π内之發泡塑膠具設定溫度。 置位移使喷嘴64位移至WW〇〇〇W4 is now looking for the feeding tube, screw and hopper, and the hopper is connected with the simple tube. (4) The rod is set as simple as the tube, and the tube is connected to the bottom of the tube at the front end of the tube. , and shoot the tube and ^ cavity, check valve, push rod, and push rod forward by the shot material secret county, and the shot 2 end with a nozzle, and the nozzle has __, and the nozzle _ needle by the crank The connecting rod and the nozzle switch cylinder are linked. When the _ _ _ and _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 7 200846163 In the storage chamber of the shot tube, the continuously transported foam plastic kick will push the push rod back ' until the set storage amount is up, and then close the blank opening, and when the nozzle is virtual mode = At the same time, the nozzle is cut by the nozzle to drive the connecting rod, the crank is opened to open the nozzle switch, and the seventh shot cylinder pushes the push rod forward to make the foamed plastic project from the nozzle. The above structure is additionally increased - the injection tube with the storage chamber can increase the storage (four) and the injection amount of one molding. However, the molding method still has the following defects: person a. plastic and gas society should be mixed by screw county , still have poor mixing uniformity. 〃 b. Because the pressure of the storage chamber must be less than the thrust of the screw feeding, the foamed plastic of the mixed gas and plastic can be introduced into the storage chamber 7 of the injection tube and the push rod can be retracted but will cause plastic and Insufficient combination of gases causes the plastic to not stably cover the bubbles, and causes adjacent bubbles to combine with each other to form large bubbles that affect the quality of the product. c. The foamed plastic guides the __ will be escaping backwards between the feed tube and the screw, causing the mosquitoes in the plastic to be insufficiency; d. It is difficult to control the proportion and size of the foam of the foamed plastic, and the stability of the finished product is not good. 6• When the injection tube is engaged with the mold, the nozzle switch oil rice must be operated at the same time, and the nozzle opening needle can open the nozzle, and the (4) control nozzle switch cylinder and the mechanical displacement displacement tube are not easy. The gas and foamed plastic overflowed on the outside of the mold and the injection operation was not smooth. SUMMARY OF THE INVENTION The object of the present invention is to produce a plurality of foamed plastics of various densities by pressurizing a plastic to firmly mix a bubble with a bubble and by controlling the size of the bubble by pressure to meet the demand. The molding method of the present invention comprises the following steps: 1. Laying plastic and gas into a chamber, melting the plastic and mixing with the gas to form a mixed foamed plastic. 2. The aforementioned mixed foamed plastic is introduced into another chamber. 3. Pressurizing the other chamber containing the previously mixed foamed plastic. 4. Injection molding. 1. The plastic and gas are injected into the chamber, and the plastic is melted and mixed with the gas. The Weizhu County sets the plastic and gas of the former sister plastic and the gas to the chamber, and the gas may be nitrogen. , carbon dioxide or other gases, and the surface of the heating seam forming liquid _ shape, by the drop or:, his way to mix the body of the body can be blended, and the plastic can be coated with gas = into the first mixed hair When the bubble is turned, the legs and gas can be injected into the chamber at the same time or at different times. The secret of the first mixing and the ratio of the high pressure gas will determine the expansion ratio. 2. The step of introducing the mixed foamed plastic into another chamber is to introduce the mixed foamed plastic into the chamber by the passage, and the county-capacity chamber may have a set back 9 200846163 to press the first mixed foam. The plastic can be stably introduced into another chamber, and the other chamber is sealed after being introduced, and the chamber has a spout, and the nozzle is sealed when it is not ejected. 3. The other content of the foam containing the aforementioned mixed foam The chamber pressurizing step is to reduce the volume of the other chamber by pressurization, and pressurize the first-mixed foamed plastic according to a set compression ratio, and force the plastic to be more stable with the gas to form the first time. Mixed foamed plastic, and the size of the bubble can be controlled by setting the pressure of the pressure, and the smaller the pressure, the smaller the bubble. 4. The injection molding step is to pressurize the nozzle of the other chamber immediately after pressurization, and the second mixed foamed plastic in the other chamber is injected from the nozzle to the mold. The injection device of the present invention, which comprises the above-mentioned method, comprises a "first mixing mechanism, a pressure mixing mechanism" and the first mixing mechanism has a first chamber, and the first chamber has a Π 'and a first chamber a heating device is further disposed, and a lifting device is disposed in the first chamber; a pressurized mixing mechanism is connected to the first chamber outlet, and the second chamber is connected to the nozzle, and the second chamber is connected to the nozzle. The piston is arranged in the chamber, and the piston can be re-applied in the second chamber, and the plastic and the gas can lead the first chamber - the material is fed by the ferrite and the first mixing and re-introduction by the rotating device. The Ergu room, the second brother of the second brother = the piston is pressurized for the second time and then injected by the nozzle. The present invention cooperates with the foregoing method, and the device includes a first mixing mechanism and a pressurized mixing mechanism, and the first and the present, and the storage tube has a first chamber, a screw, and a gas filling device. ζ 至 至 至 至 至 2008 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 46 Inside the chamber, and the screw is arranged to disturb the mixing leaf' and is driven to rotate by the driving device; and the gas injection device communicates with the first chamber of the material tube, the sub-gas needle, the gas distribution ^ and the first part of the external gas material tube - The pressure mixing mechanism includes a pressurizing seat, a pressurizing piston, a piston, a nozzle, and a nozzle reverse stop: a 'switching device' in which the pressurizing seat has a second chamber, and the second chamber is connected to the σ The material pipe exits 'and has a π-connecting nozzle' and is set in the binding seat to set the pressure to the city, set the position, and the temperature control relay; the piston is set in the second capacity (four), and the piston is connected with the pressurized cylinder' and Pressurized red to drive the reciprocating action; the mouth is placed at the exit position of the pressurizing seat, and the sub-spray π and the second chamber The outlet is connected, and the nozzle is provided with a nozzle reverse stop, the switch device 'and the nozzle is reversed and disposed on the channel of the nozzle, and the switch device has a pin, a net read 'and a pin _ part' and the part It is set on the counter-stopping side-side' and the needle is made up of the miscellaneous elements and the lion's top nozzle is reversed. The plastic can be injected into the first chamber of the material tube by the hopper, and the high pressure gas is injected. The gas device is injected into the first chamber of the material tube, and the plastic is heated and melted into a liquid chick by the device of the material tube, and the first mixed yarn can be made into a foaming powder by using the _ and (4) The foaming of the first mixing can be transferred from the screw to the second volume (4) of the pressurized mixing mechanism, and the check valve of the outlet passage can prevent the first mixing foaming surface and the "countercurrent flow; Displace the piston and reduce the space of the valley chamber so that the foamed plastic in the second chamber is squeezed for the second mixing, and the second mixing of the foamed plastic can make the gas and the plastic more stable and collapsible 200846163 Hehe, and the greater the pressure, the smaller the Wei Qiu, and the foaming kinking ratio of the slaves and the high pressure gas The foam can form foams of different requirements to form microcellular foaming; and the mosquitoes can be displaced so that the nozzle can be pressed against the valve needle of the device when the nozzle is smashed to the mold base, and the valve needle is abutted The nozzle check valve opens the passage of the mouth and then presses (4) to advance, so that the foaming flap can be ejected, and the nozzle can be stopped by mechanical action when the nozzle is displaced to the mold base. Synchronous turn-on for better motion stability. [Embodiment] Referring to the first drawing, the molding method of the present invention comprises the following steps: .1· /Injecting plastic, gas into a chamber, melting the surface, and combining with the gas Jtb to form a mixed foamed plastic. 2. The aforementioned mixed foamed plastic is introduced into another chamber. 3. Pressurizing the other chamber containing the previously mixed foamed plastic. 4 injection molding. The step of injecting plastic and gas into the chamber, melting the plastic, and mixing with the gas to form a mixed foamed plastic is to inject a set proportion of plastic and high pressure gas into the chamber, and the high pressure gas may be nitrogen gas. Carbon dioxide or other gas, which is heated to form a liquid thick shape, which can be mixed with the smelted plastic by scrambling or other means, and the plastic can coat the gas to form a first-under-mixed foam. Plastic, and the aforementioned plastics and gases can be injected into the chamber at the same time or at different times. - In addition: When under-mixing, the high-pressure gas 12200846163 that needs to be compressed can be injected into the valley for subsequent pressurization, and as needed. The ratio of foaming comes, and the high pressure gas is introduced. '2. The step of introducing the mixed foamed plastic into another chamber is to introduce the mixed foamed plastic into the other chamber from the passage, and the chamber can set various back pressures so that the mixed foamed plastic can be used as needed The other chamber is stably sealed, and the other chamber has a nozzle closed to a chamber, and is introduced after the introduction, and the nozzle is not dense when it is ejected. 3. The other one containing the foamed plastic of the foregoing mixing The chamber pressurizing step is to reduce the volume of the other chamber by pressurization, and pressurize the first mixed foamed plastic according to the set compression ratio, so that the first high pressure gas and the plastic are combined with the foam plastic. Tightly presses and forces the plastic and gas to form a second mixed foamed plastic more stably and uniformly. The size of the bubble in the foamed plastic can be controlled by setting the pressure of the pressurized pressure. The smaller the pressure, the smaller the bubble. Compression is performed by injecting a ratio of high pressure gas to plastic. 4. The injection molding step is to pressurize the nozzle of the other chamber immediately after the second mixing, and the second mixed foamed plastic in the other chamber is injected from the nozzle to the mold. Referring to the second embodiment, the injection device of the first embodiment of the present invention includes a first mixing mechanism 5 and a pressurized mixing mechanism 6, and the first mixing mechanism 5 includes a material tube 51, a screw 52, The gas injection device 53 has a first chamber 511 and an outlet 512 in front of the chamber 511, and a check valve 513 is disposed at an outlet position of the outlet 512 13 200846163, and a hopper 514 is connected to the material tube 51. And in the material b 51, a heating device (not shown) is further disposed, and the screw is a stirring device and is sighed in the first chamber 511 of the material officer 51, and the stirring blade 521 is disposed on the screw 52, and is driven by the driving device. (The towel is not marked) to drive the rotation; and the gas injection device connects the material to the valley 511 and has the gas needle 531 and the gas distributor 532, and the outside air can be introduced into the first chamber 511 of the material tube 51. The pressurizing mixing mechanism 6 includes a pressurizing seat 61, a pressurizing cylinder 62, a piston 63, a spray 64, a nozzle check valve 65, and a switching device 6β, wherein the pressurizing seat has a second valley to 611, and the second chamber The 611 inlet 612 communicates with the outlet 5 ι outlet, the sub-outlet 613 communicates with the nozzle 64, and the pressure seat 61 is provided with a pressure sensor 614, a positioning device 615, a temperature control 616, and a piston (6) disposed at the second chamber. The piston 63 is connected to the piston 63 and is reciprocated by a pressurizing cylinder. The nozzle 64 is disposed at a position π 613 of the pressurizing seat 61, and has a mouth 641 and a second chamber 611. The outlet 613 is connected, and the mouth valve (10) is provided with a bell stop check valve 65 and a switch device 66, and the nozzle check valve 65 is disposed on the port of the nozzle (10), and the device 66 has a valve pin 66 and an elastic member. The needle 661 has a top portion 66u, and the top portion is just disposed on the side of the corresponding nozzle check valve 65-, and the valve needle 661 is held by the elastic tree to prevent the top portion 6611 from pressing against the nozzle. Stop the valve. Looking at the third figure, during the molding operation, the plastic 7 can be injected into the dimple chamber 511 of the material pipe 51 by the hopper 514, and the high-view body is injected into the material tube by the gas injection device μ 14 200846163 弟 谷 谷 到 511 (such as the arrow Show), and corresponding to the product demand setting injection plastic 7, milk proportion 'and the gas can be nitrogen, carbon dioxide or other suitable gas, and plastic ^ by the heating tube of the tube 51 (not shown) heated to melt liquid By the rotation of the screw 52, the mixing blade 521 can mix the plastic 7 and the gas for the first time to form a foamed plastic having the bubble 8. Referring to the fourth figure, the first mixed foamed plastic of the present invention can be conveyed by the screw 52 to the first chamber 611 of the pressurized mixing mechanism 6, and the pressure (10) can apply appropriate pressure to the piston 63, so that the first time The foamed plastic with the plastic 7 and the bubble 8 can be stably introduced into the second chamber 611 by (4), and the 512-channel check valve 513 of the outlet can prevent the first mixing of the foamed plastic and the gas from flowing back. In the fifth embodiment, the pressurized mixing operation of the present invention causes the pressing cylinder to move the piston 63 and reduce the space of the second chamber 611 to cause the foamed plastic in the chamber 6 ι to be subjected to the second mixing. And the displacement distance of the piston 63 can be preset corresponding to the requirement of the product, and the displacement of the piston 63 can be controlled by the pressure sensor 614 or the positioning device 615 to control the pressure of the chamber 611, and the foamed plastic can be mixed for the second time. The bubble 8 is more stably combined with the plastic 7 , and when the pressure is large, the smaller the bubble 8 is, the smaller the foam is formed, and the second chamber 611 is connected to the inlet 612 of the second chamber 611 when pressurized. The passage has a check valve 513, and the outlet 613 has a nozzle counter Valve 65, such that the second chamber 611 may be closed shape having a set pressure and density, and then by the temperature control device may be a foamed plastic with 616 within the second chamber 15 200846163 6Π set temperature. Displacement causes displacement of nozzle 64 to
同步開啟，可具較佳動作穩定性。 凊茶閱第七圖，本發明第二實施例對應第一實施例具第 人此口機構91、加壓混合機構92，並該加壓混合機構呈橫 向設於第-次混合機構91下方，並該第—次混合機構9卜加 U機構92由連接座93連結，並該連接座93具通道931 以連通第一次混合機構91、加壓混合機構92，並使本發明之 第一貝施例可具如第一實施例之功效，又該第二實施例之加壓 5月參閱弟六圖，本發明令射出裝置七 模座90時可由模座9〇抵壓開關裝置肋 針661之頂持部6611抵壓喷嘴逆止閙 混合機構為橫向設置，因而可較第一實施例之整體高度降低， 可具較佳空間適用性。 本發明之加壓混合機構不一定須對應第一次混合機構呈 垂直或水平設置’亦可令加壓混合機構對應第一次混合機構為 其他不同角度設置，例如30。、45。、60。，而該加壓混合機構 可依據需求作適當組合角度。 本發明之定位裝置、溫度控制裝置、氣體分配器為非必 16 200846163 要性結構，並域裝置可具—個以上，又逆止閥可設於第一次 混合機構與加壓混合機構之相連通道位置，不一定須設於料管 之出口上X/舌基可由其他機構帶動往復作動，本發明之注氣 裝置可依氣體需要壓縮的倍數將高壓氣體經由注氣裝置注入 ‘ 料管之容室内，减氣體可明自或狗⑽進人混合，並決 * 定未來·泡倍率，又本發明之容錢力可因應f求作低壓至 眷 高壓等不同壓力條件動作，使得製品可具有多種不同氣泡大 小、控度變化’而前述實施例為本發明之例示，並非本發明申 請專利範圍限制’凡依據本發明精神所為之等效改變亦應屬於 本發明範齊内。 【圖式簡單說明】 第一圖係本發明之發泡塑膠成型方法示意圖。 第二圖係本發明之第一實施例發泡塑膠之射出裝置妗 示意圖。 衣、、、。構 第三圖係本發明之第一實施例發泡塑膠之射出穿置、、7 、注氣及弟一'次混合示意圖。 % 出巢置之發 第四圖係本發明之第一實施例發泡塑膠之射 泡塑膠導入容室示意圖。 置力ϋ壓現 第五圖係本發明之第一實施例發泡塑膠射出裝 合示意圖。 第 六圖係本發明之第一實施例發泡塑膠射出敦 置射出動 17 200846163 作不意圖。 構 第七圖係本發明之第二實施例發泡塑膠之射出裝置鈇 示意圖。 第八圖係習知發泡塑膠之射出裝置結構示意圖。 第九圖係習知發泡塑膠之氣泡增大示意圖。 【主要元件符號說明】 1·庄入塑料、氣體至谷室，令前述塑料炫融，並與前述 氣體混合形成混合之發泡塑膠 2·前述混合之發泡塑膠導入另一容室 3·對含有前述混合之發泡塑膠的前述另 4.射出成型 一容室加壓 5第一次混合機構 51料管 511第一容室 512 出口 513逆止閥 514料斗 52螺桿 521攪拌葉 53注氣裝置 531氣針 532氣體分配器 6加壓混合機構 61加壓座 611第二容室 612 入口 613 出口 614壓力感測器 615定位裝置 616溫度控制裝置 62加壓缸 63活塞 64喷嘴 641 喷口 65噴嘴逆止閥 66開關裝置 661閥針 66Π頂持部 662彈性元件 7塑料 8氣泡 18 200846163 90模座 91第一次混合機構 92加壓混合機構 93連接座 931通道 Γ料管 11’容室 2’料斗 3’螺桿 31’攪拌器 4’注射裝置 5’喷嘴 51’通道 6’模具 7’塑料 8’氣泡 19Synchronous turn-on for better motion stability. Referring to the seventh embodiment, the second embodiment of the present invention corresponds to the first embodiment having the first mouth mechanism 91 and the pressure mixing mechanism 92, and the pressure mixing mechanism is disposed laterally below the first mixing mechanism 91. And the first mixing mechanism 9 is connected by the connecting seat 93, and the connecting seat 93 has a passage 931 to communicate the first mixing mechanism 91, the pressure mixing mechanism 92, and the first shell of the present invention. The embodiment can have the effect of the first embodiment, and the pressurization of the second embodiment can refer to the sixth figure. The present invention can be used to press the rib pin 661 of the switch device by the die holder 9 when the injection device has the seven-piece holder 90. The pressing portion 6611 of the pressing portion of the pressing nozzle is disposed laterally, so that the overall height of the mixing portion 6611 can be lowered compared to the first embodiment, and the space applicability can be improved. The pressurizing mixing mechanism of the present invention does not necessarily have to be vertically or horizontally disposed corresponding to the first mixing mechanism. Alternatively, the pressurizing mixing mechanism may be disposed at different angles corresponding to the first mixing mechanism, for example, 30. 45. 60. And the pressurized mixing mechanism can appropriately combine angles according to requirements. The positioning device, the temperature control device and the gas distributor of the present invention are not required to have a structure, and the parallel device may have more than one, and the check valve may be connected to the first mixing mechanism and the pressurized mixing mechanism. The position of the channel does not have to be provided at the outlet of the material tube. The X/lingual base can be reciprocated by other mechanisms. The gas injection device of the present invention can inject the high pressure gas into the volume of the material tube through the gas injection device according to the multiple of the gas compression. Indoor, the gas can be changed from the dog or the dog (10) to mix and determine the future bubble rate, and the capacity of the invention can be operated according to different pressure conditions such as low pressure to high pressure, so that the product can have various kinds of products. The foregoing embodiments are illustrative of the invention and are not intended to limit the scope of the invention. The equivalent changes in the spirit of the invention are also intended to be within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a schematic view of a foam molding method of the present invention. The second drawing is a schematic view of the injection molding apparatus of the foamed plastic of the first embodiment of the present invention. clothes,,,. The third figure is a schematic diagram of the injection molding of the foamed plastic of the first embodiment of the present invention, 7, the gas injection, and the mixing of the brothers. The fourth figure is a schematic diagram of the foam plastic introduction chamber of the foamed plastic of the first embodiment of the present invention. The fifth drawing is a schematic view of the foamed plastic injection assembly of the first embodiment of the present invention. Fig. 6 is a view showing the foaming plastic injection of the first embodiment of the present invention. Fig. 7 is a schematic view showing the injection molding apparatus of the foamed plastic of the second embodiment of the present invention. The eighth figure is a schematic view of the structure of the injection device of the conventional foamed plastic. The ninth figure is a schematic diagram of the bubble increase of the conventional foamed plastic. [Description of main component symbols] 1. Incorporate plastic and gas into the valley chamber, make the plastics melt and melt, and mix with the gas to form a mixed foamed plastic. 2. The mixed foamed plastic is introduced into another chamber. The foregoing fourth injection molding chamber containing the previously mixed foamed plastics 5 first mixing mechanism 51 material tube 511 first chamber 512 outlet 513 check valve 514 hopper 52 screw 521 stirring blade 53 gas injection device 531 gas needle 532 gas distributor 6 pressure mixing mechanism 61 pressure seat 611 second chamber 612 inlet 613 outlet 614 pressure sensor 615 positioning device 616 temperature control device 62 pressure cylinder 63 piston 64 nozzle 641 nozzle 65 nozzle counter Stop valve 66 switch device 661 valve needle 66 Π top holding portion 662 elastic member 7 plastic 8 bubble 18 200846163 90 mold base 91 first mixing mechanism 92 pressure mixing mechanism 93 connecting seat 931 channel hopper tube 11' chamber 2' hopper 3' screw 31' agitator 4' injection device 5' nozzle 51' channel 6' mold 7' plastic 8' bubble 19