200810900 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種三明治内部超臨界發泡射出成型 裝置暨方法，具有二製造過程簡化合一之優點，不需另外 做表面加工處理，即可達表面加工處理之功效，實為一充 分符合產業利用性之製造方法。 【先前技術】 按’習用之「超臨界發泡流體塑膠射出裝置」 置入 置料筒 閱第一圖〕，主要係由供氣組（1)、成型組（2)組成 ’其中··供氣組（1)，係指由供氣瓶（1 1)、氣流控 制器j1 2 )、供氣管（i 3)所組成，此供氣瓶（丄3 )由氣流㈣器（1 2 )來控制，氣體透過氣流控制器（ 1 2)傳送至供氣管（工3)，此供氣管（丄3)連結至 置料筒+(2 1)内者；成型組（2)，係指由置料筒（2 1)、模具（2 2)所組成，置料筒（2丄）於 η)後方設有置料斗（211)，可供㈣原料=)( 内設有一螺桿（2 1 2 置料筒 端設有噴嘴（213)，可供混合後塑膠原 :習用之翻此射出入至連接之模具（2 2)以成型發泡者 ^用之超故界流體塑膠射出發泡裝置，可利用螺桿（2 上：;膠原料（3)以及供氣管（1 3)傳送之氣體 ;巧:有發泡作用，透過喷嘴（2 13)射出至模且( 2 )内以成型爲發泡（4 )〔如第_ （ ⑷成品雖有吸震緩衝之優點，可 200810900 許多細小孔洞而易累積污垢，如要避免此缺點通常於表面 另外做加功理’料使㈣造過程變 增高之作时。 ㈣費用 有鑑於上述缺失弊端，本發明人認為其有急待改進之 必要’乃思及改良創作之意念’及其一貫秉持具有之優 設計理念，針對既有之缺失加以改良，經多方設計探討】 多次修正改良，終乃有本發明三明治内部超臨界發泡射 成型裝置暨方法’係為—充分符合實用進步性與產業利用 性之設計者。 【發明内容】 本發明之三明治内部超臨界發泡射出成型裝置〔請參 閱第三圖〕，主要係由供氣組⑴、成型組（2)組成 ;其中： 供氣組（1)，係指由供氣瓶（11)、氣流控制閥 (1 2)、供氣管（1 3)、開關控制器（1 4)所組成 ，此供氣瓶（1 1)内氣體由氣流控制閥（1 2)來控制 氣流1 ’氣體透過氣流控制器（1 2)經由供氣管（1 3 )傳送至開關控制器（1 4)，而開關控制器（1 4 )設 於供氣管（1 3)上，配合射出機上電腦程序控制氣體流 量與開關控制器開啟及關閉之時間，此供氣管（1 3 )未 端連結至成型組（2)之置料筒（2 1)前端的喷嘴（2 1 3 )内者； 成型組（2)，係指由置料筒（21)、模具（22 )所組成，此置料筒（2 1 )於後方設有置料斗（2 1 1 6 200810900 )，可供塑膠原料（3)置入，於置料筒（2 1 )内設有 一螺桿（2 1 2)，此螺桿（2 1 2)可將塑膠原料（3 )往前運送及推擠，並於置料筒（2 1 )前端喷嘴（2工 3)内’此嘴嘴（2 1 3)與供氣管（1 3)未端連接， 了供超臨界氣體進人喷嘴（2 1 3) Μ，此氣體和塑膠原 料（3)在嘴嘴（2 1 3)產生發泡作用，並授拌均勻再 射出至連接之模具（2 2)内以成型爲三明治内部發泡（ 4 )者0 本發明之三明治内部發泡臨界射出成型方法〔請參閱 第八圖〕，主要係控制供氣瓶（1 1)内之超臨界氣體^ 或C〇2透過供氣管（1 3 )流入喷嘴（2 1 3 )内之流量 與開啟關閉之時間，第-段射出時將適量熱溶塑膠原：（ 3)射入模具（22)内部〔請參閱四圖〕，此時供氣管 (1 3)内部氣體是關閉鎖住，因此塑膠原料（3)並無 卷/包見象第一^又射出時，藉由控制打開氣流控制閥^ 1 2)與開關控制器（14)，讓供氣瓶（11)内適量氣 體，在適當時間、適當流量、進入喷嘴（2 1 3)進入内 部，此時因超臨界氣體與塑膠料混合使塑膠料產生發泡作 用:擾拌均勻再射人模具（2 2)内部〔請參閱第^圖〕 ’第三段射出時〔請參閱第六圖〕，關閉氣流控制閥（1 2)與開關控制器（工4)射入無發泡之熱溶塑膠料，在 模-(2 2) # π處封口達成—種如三明治内部超臨界發 泡射出成型方法之作用者。 【實施方式】 200810900 使用實施時，本發明之三明治内部超臨界發泡射出成 型裝置暨方法〔請參閱第三圖〕，首先於成型組（2)之 置料疴（2 1)後方設有置料斗（211)，可供塑膠原 料（3)置入，並於置料筒（2 1 )内裝設一螺桿（2工 2) ，於置料筒（2 1 )前端設一喷嘴（2丄3)，此喷 嘴（2 1 3)與模具（2 2)連接，又，供氣組（丄）之 供氣管（1 3)起端連接於供氣瓶（i i )，接著，通過 氣，控制閥（12)，並於供氣管（13)上設有開關控 制器（1 4)，此供氣管（1 3)未端連接於喷嘴（2工 3) 内，此時，供氣組（1)與成型組（2)連接固定， 要製造三明治内部超臨界發泡時，先將開關控制器（！ 4 =請’此時’供氣瓶（ii)内之超臨界氣體無法透過 ^氣g ( 1 3)流人喷嘴（2 1 3)内，此螺桿（2 1 2 2 發出射出動作而將熱溶塑膠原料（3)往噴嘴（2工3 )方向運送及推擠，將熱溶塑膠原料（3)透過喷嘴（2 13)可射出至連接之模具（22)内，而成爲外層（4 ^吏用原料〔請一併參閱第四圖及第五圖〕此為第一段 (，然後’將開關控制器（14)開啓，此時，供氣瓶 )内之超臨界氣體透過供氣f (工3 )流入喷嘴（ f Θ，超臨界氣體與塑膠原料（3)發生發泡作用 )=者，透過㈣（21 3)可射出至連接之模具（22 封π時而:：:：⑴，此時為第二段射出，最後要 )透過.噴嘴：2工3 = 4 )關閉，再將塑膠原料（3 (2 1 3)射出至連接之模具（2 2)内，而 8 200810900 成爲封口層（5)〔請一併參閱第六圖〕，此時為第三段 射出冷卻後打開模具（2 2)與托模，即是-個有具有包 覆平整外層（4)之内部發泡體，此射出成形裂置暨方法 ’可避免發泡的外表具有許多細小孔洞而易累積污垢，如 要避免此缺闕常於表面料做加L里，騎使得製造 過程變較複雜，本發明之三明治内部超臨界發泡射出成聖 裝置暨方法，具有製造過程簡化之優點，不需另外做表面 加工處理，即可達表面加工處理之功效，爲將塑膠原料（ 3)與超臨界氣體發生發泡作用時，能夠於喷嘴（2 1 3 )内達到最佳效果，故於喷嘴（2 i 3)内設計—切割器 (214)〔如第七圖所示〕，可將混有超臨界氣體之塑 膠原料（3)切割成更小分子，使射出成品之内部發泡層 更細緻作用者。 本發明之三明治内部超臨界發泡射出成型裝置暨方法 ，見諸同範疇產品未曾思及、作為之新穎性，此供氣組（ 1 )之供氣官（1 3)未端連接於置料筒（2 1 )前端喷 為（2 1 3)内二段式射壓成型，即可製造出具有包覆外 層（4)之發泡，具有二製造過程簡化合一之優點，不需 另外做表面加工處理，即可達表面加工處理之功效，係為 具備發明專利要件及符合產業利用性者。 細上所述，當知本發明具有新穎性，且本發明未見之 於任何刊物，當符合專利法第2 1、2 2條之規定。 唯以上所述者，僅為本發明之一較佳實施例而已，當 不能以之限定本發明之範圍。即大凡依本發明申請專利範 9 200810900 圍所作之均等變化與修飾，皆應仍屬本發明專利涵蓋之範 圍内。 【圖式簡單說明】 第一圖：係習用之組合示意圖 第二圖：係習用之發泡成型示意圖 第三圖：係本發明之組合示意圖 第四圖：係本發明之塑膠材料倒入模具實施示意圖 第五圖：係本發明之發泡層實施示意圖 第六圖：係本發明之封口層實施示意圖 第七圖：係本發明之切割器切割塑料分子實施示意圖 第八圖：係本發明之射出成形時射出流程示意圖 200810900 【主要元件符號說明】 習用圖中參照號數： 1 供氣組 1 1 供氣瓶 1 2 氣流控制器 1 3 供氣管 2 成型組 2 1 置料筒 2 1 1 置料斗 2 1 2 螺桿 2 1 3 喷嘴 2 2 模具 3 塑膠原料 4 發泡 本創作圖中參照號數： 1 供氣組 1 1 供氣瓶 1 2 氣流控制閥 1 3 供氣管 1 4 開關控制器 2 成型組 2 1 置料筒 2 1 1 置料斗 2 1 2 螺桿 2 1 3 喷嘴 2 1 4 切割器 2 2 模具 3 塑膠原料 4 外層 5 發泡層 6 封口層 11200810900 IX. Description of the Invention: [Technical Field] The present invention relates to a sandwich internal supercritical foam injection molding apparatus and method, which has the advantages of simplifying the unity of the manufacturing process, and does not require additional surface processing, that is, The effect of the surface treatment can be achieved, which is a manufacturing method that fully meets the industrial applicability. [Prior Art] According to the 'Ultra-supercritical foaming fluid plastic injection device', placed in the loading cylinder, the first picture] is mainly composed of the gas supply group (1) and the molding group (2). The gas group (1) is composed of a gas supply bottle (1 1), a gas flow controller j1 2 ), and an air supply pipe (i 3). The gas supply bottle (丄3) is composed of a gas flow (four) device (1 2 ). Control, the gas is transmitted to the air supply pipe (work 3) through the air flow controller (1 2), the air supply pipe (丄3) is connected to the inside of the loading cylinder + (2 1); the forming group (2) is referred to The barrel (2 1) and the mold (2 2) are composed, and the placing barrel (2丄) is provided with a hopper (211) behind the η) for (4) raw materials =) (with a screw inside (2 1 2 set) There is a nozzle (213) at the end of the barrel, which can be used for mixing the plastic original: the conventionally turned and injected into the connecting mold (2 2) to form the foaming device for the foaming device. Using a screw (2::; rubber material (3) and gas supply pipe (13) to deliver gas; Qiao: foaming, through the nozzle (2 13) to the mold and (2) to form foaming ( 4) [If the _ (4) finished product has The advantages of shock absorbing cushion can be easily accumulating dirt in many small holes in 200810900. If this shortcoming is to be avoided, it is usually added to the surface to make the process increase. (4) Costs In view of the above-mentioned missing drawbacks, the present invention People think that it has the urgent need to improve 'the idea of thinking and improving creation' and its consistently adhering to the excellent design concept, to improve the existing defects, through multi-party design discussion] The invention relates to a sandwich internal supercritical foaming injection molding device and method, which is a designer who fully meets the practical progress and industrial applicability. [Invention] The sandwich internal supercritical foam injection molding device of the invention [see the third Figure], mainly consists of gas supply group (1), forming group (2); wherein: gas supply group (1), refers to the gas supply bottle (11), air flow control valve (1 2), gas supply pipe (1 3 And a switch controller (14), the gas in the gas supply bottle (1 1) is controlled by the air flow control valve (1 2) to control the air flow 1 'the gas permeates the air flow controller (1 2) through the air supply pipe (1 3 Transfer The switch controller (1 4), and the switch controller (14) is disposed on the air supply pipe (13), and cooperates with the computer program on the injection machine to control the gas flow rate and the time when the switch controller is turned on and off, the air supply pipe (1) 3) The end is connected to the nozzle (2 1 3) at the front end of the barrel (2 1) of the forming group (2); the forming group (2) refers to the barrel (21) and the mold (22) The hopper (2 1 ) is provided with a hopper (2 1 1 6 200810900 ) at the rear for plastic material (3) to be placed, and a screw (2 1) is arranged in the storage cylinder (2 1 ) 2), the screw (2 1 2) can transport and push the plastic material (3) forward, and in the front end nozzle (2 work 3) of the loading cylinder (2 1 ), the mouth (2 1 3) Connected to the end of the air supply pipe (1 3), for the supercritical gas to enter the nozzle (2 1 3), the gas and plastic raw material (3) foam in the mouth (2 1 3), and mix Uniformly re-injected into the connected mold (2 2) to form a sandwich internal foam (4). The sandwich internal foaming critical injection molding method of the present invention (see the eighth figure) mainly controls the gas supply bottle ( 1 1 The flow rate of the supercritical gas ^ or C〇2 flowing into the nozzle (2 1 3 ) through the gas supply pipe (1 3 ) and the time of opening and closing, the appropriate amount of hot-melt plastic material when the first-stage injection: (3) Inside the mold (22) (please refer to Figure 4), at this time, the gas inside the gas supply pipe (13) is closed and locked, so that the plastic material (3) has no roll/package when it is seen as the first ^ and is shot. Control to open the airflow control valve ^ 1 2) and the switch controller (14), let the appropriate amount of gas in the gas supply bottle (11), enter the nozzle at the appropriate time, the appropriate flow rate, into the nozzle (2 1 3), at this time due to supercritical The gas is mixed with the plastic material to foam the plastic material: the mixture is evenly sprayed and then injected into the mold (2 2). [Please refer to the figure ^] When the third stage is shot (see Figure 6), the air flow control valve is closed. (1 2) and the switch controller (work 4) are injected into the non-foaming hot-melt plastic material, and the seal is achieved at the mold-(2 2) # π--the role of the sandwich internal supercritical foam injection molding method. . [Embodiment] In the implementation of 200810900, the sandwich internal supercritical foam injection molding apparatus and method of the present invention (please refer to the third figure) are first placed behind the loading magazine (2 1) of the forming group (2). The hopper (211) is provided for the plastic material (3), and a screw (2 work 2) is arranged in the storage cylinder (2 1 ), and a nozzle is arranged at the front end of the storage cylinder (2 1 ) (2丄) 3), the nozzle (2 1 3) is connected to the mold (2 2), and the gas supply pipe (13) of the gas supply group (13) is connected to the gas supply bottle (ii), and then controlled by gas. The valve (12) is provided with a switch controller (14) on the air supply pipe (13), and the end of the air supply pipe (13) is connected to the nozzle (2 work 3), at this time, the gas supply group (1) ) It is fixedly connected with the forming group (2). To make the supercritical foaming inside the sandwich, first switch the controller (! 4 = please 'this time' the supercritical gas in the gas supply bottle (ii) cannot pass through the gas g (1 3) In the flow nozzle (2 1 3), the screw (2 1 2 2 emits an action to transport and push the hot-melt plastic material (3) toward the nozzle (2 work 3), and the hot-melt plastic raw material 3) through the nozzle (2 13) can be injected into the connected mold (22), and become the outer layer (4 ^ 吏 raw materials (please refer to the fourth and fifth figures together) this is the first paragraph (and then ' The switch controller (14) is turned on, at which time the supercritical gas in the gas supply bottle flows into the nozzle through the supply air f (work 3) (f Θ, the supercritical gas and the plastic raw material (3) are foamed) = Through (4) (21 3), it can be fired to the connected mold (22 π::::(1), at this time, the second shot, the last) through. Nozzle: 2 work 3 = 4) Close, then The plastic material (3 (2 1 3) is injected into the connected mold (2 2), and 8 200810900 becomes the sealing layer (5) [please refer to the sixth figure together), at this time, the third stage is cooled and opened. The mold (2 2) and the mold, that is, an internal foam having a coated flat outer layer (4), the injection molding splitting method and the method of avoiding foaming have many fine holes and easily accumulate dirt. If the defect is to be avoided, the surface material is often added to the L, and the manufacturing process becomes more complicated. The sandwich internal supercritical foaming injection of the present invention The saint device and method have the advantages of simplifying the manufacturing process, and can achieve the effect of surface processing without additional surface processing, and can be used for the nozzle when the plastic material (3) is foamed with the supercritical gas. 2 1 3 ) to achieve the best effect, so in the nozzle (2 i 3) design - cutter (214) [as shown in the seventh figure], can be cut into the plastic raw material (3) mixed with supercritical gas The smaller molecule makes the inner foaming layer of the finished product more delicate. The sandwich internal supercritical foam injection molding device and method of the invention are not considered in the same category, and the novelty is the gas supply group. (1) The gas supply officer (1 3) is connected to the front end of the loading cylinder (2 1 ) and sprayed into the (2 1 3) two-stage injection molding to produce the coated outer layer (4). Foaming has the advantages of simplification and integration of the two manufacturing processes, and it can achieve the effect of surface processing without additional surface processing, and is required to have patents for inventions and to meet industrial applicability. As described in detail, it is to be understood that the present invention is novel, and the present invention is not disclosed in any publication, and is in accordance with the provisions of Articles 21 and 22 of the Patent Law. The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. That is, the equivalent changes and modifications made by the company in accordance with the invention patent No. 9 200810900 are still within the scope of the patent of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic diagram of a combination of conventional use. Fig. 3 is a schematic view of a conventional foam molding. The third drawing is a schematic diagram of the combination of the present invention. FIG. 5 is a schematic view showing the implementation of the foam layer of the present invention. FIG. 7 is a schematic view showing the implementation of the sealing layer of the present invention. FIG. 8 is a schematic view showing the implementation of the cutter cutting plastic molecule of the present invention. Schematic diagram of injection process during forming 200810900 [Description of main components] Reference number in the conventional drawing: 1 Gas supply group 1 1 Gas supply bottle 1 2 Air flow controller 1 3 Air supply pipe 2 Forming group 2 1 Storage cylinder 2 1 1 Storage hopper 2 1 2 Screw 2 1 3 Nozzle 2 2 Mold 3 Plastic material 4 Foaming Reference number in the creation drawing: 1 Gas supply group 1 1 Gas supply bottle 1 2 Air flow control valve 1 3 Air supply pipe 1 4 Switch controller 2 Forming Group 2 1 Cartridge 2 1 1 Hopper 2 1 2 Screw 2 1 3 Nozzle 2 1 4 Cutter 2 2 Mold 3 Plastic material 4 Outer layer 5 Foam layer 6 Sealing layer 11