1220126 玖、發明說明(1 ) 【發明所屬之技術領域】 本發明是有關於一種發泡物成型方法，特別是指一種 可使-初胚在-定壓環境下膨脹成型為一發泡體的發泡物 控壓成型方法。 5【先前技術】 習知EVA發泡鞋底的製作方法一般是將一 eva塑料 射入-熱壓發泡模具的一模穴内，藉由加熱該熱壓發泡模 具至一可觸動交聯、發泡反應的溫度，即可使言亥EVA塑 料於該模穴内進行交聯、發泡反應，如此，待該EVA塑 10料父聯、發泡反應完成後，開啟該熱壓發泡模具，即可得 到一瞬間膨脹成型的發泡初胚，此時，為使該發泡初胚冷 卻定型，以便於進行二次壓塑型製程，一般是將該發泡初 胚靜置於室内兩天左右，以待該發泡初胚降溫收縮而冷卻 定型。 15 然而’由於在該熱壓發泡模具開啟時的室内大氣壓力 會隨時因外界環境的變化而產生變動（例如天候的改變） ，且，在該發泡初胚冷卻過程中的室内大氣壓力亦會隨時 因外界環境的變化而產生變動，因此，該發泡初胚冷卻定 型後成為標準品的良率一般僅有70%左右，導致在進行 20 二次壓塑型製程之前，業者必須先將太大的不良品進行磨 邊、修整，並將太小的不良品於套量後退號，此後，才能 接著將合乎尺寸標準的發泡初胚置入一二次壓塑型模具内 ’以將該發泡初胚熱壓、冷卻定型為一具有適當花紋的成 品，因此，一般二次壓塑型製程均需耗時三天左右（含磨 7 1220126 玖、發明說明（2 ) 邊、退號的前置作業）。 為改善該發泡初胚冷卻定型後成為標準品的良率，便 有業者將膨脹成型後的發泡初胚隨即置入一隧道烘箱内， 以使該發泡初胚在一控溫的環境下降溫收縮、冷卻定型（ 5 一般需耗時八小時），但是，由於該熱壓發泡模具開啟瞬 間的室内大氣壓力仍會隨外界環境變化而不同，因此，此 種方法一般僅能將良率提高至85%左右，而其餘的不良 品仍需於二次壓塑型製程之前進行磨邊、退號的前置作業 ，因此，業者於使用該隧道烘箱後，仍需耗時地進行二次 ίο 壓塑型製程（含磨邊、退號的前置作業）。 【發明内容】 因此，本發明之目的，即在提供一種使一初胚在一定 壓環境下膨脹成型為一發泡體，以提高生產良率並縮短製 造工時的發泡物控壓成型方法。 15 於是，本發明之發泡物控壓成型方法，包含：（A) 在一壓力室内準備至少一第一模具單元，該第一模具單 元具有一第一上模具，及一相反於該第一上模具的第一 下模具。（B)將一發泡塑料置入該第一上、下模具閉合 形成的一第一模穴内，而交聯、發泡為一初胚，該初胚 20 可對5亥第一模穴造成一發泡壓力。（C )對該壓力室施加 一成型壓力。（D)將該第一上、下模具開啟，使該初胚 在該成型壓力下膨脹成型為一發泡體。 【實施方式】 本發明之前述以及其他技術内容、特點與功效，在以 8 1220126 玖、發明說明（3 ) 下配合參考圖式之較佳實施例的詳細說明中，將可清楚的 明白。 在提出詳細說明之前，要注意的是，在以下的說明中 ，類似的元件是以相同的編號來表示。 5 參閱第二圖，為本發明之發泡物控壓成型方法的一 第一較佳實施例所採用的成型裝置，該成型裝置包含： 一機台單元10、一壓力室2〇、一壓力感測元件30、一調 壓閥40、一第一模具單元5〇、一第二模具單元6〇、一輸 送單元70，及一供壓單元8〇。 10 该機台單元10具有一機台11，及二裝設於該機台11 上的油壓缸12、13，該等油壓缸12、13分別具有一可伸 縮的活塞桿121、131，該等活塞桿121、131是延伸至該 壓力室20内而可分別與該第一、二模具單元5〇、6〇連接 ’以開啟/閉合該第一、二模具單元5〇、6〇。 15 该壓力室20是形成於該機台11内部。 該壓力感測元件30是裝設於該機台u上並與該壓力 室20連通，而可感測該壓力室1〇的壓力，在本實施例中 ’ δ亥壓力感測元件30是為一壓力計。 乂凋壓閥4〇是裝設於該機台11上並與該壓力室 連L而可供该壓力室20減壓用，且，該調壓閥4〇是可 凋整設定汽壓阻力，而可使該壓力室20減壓至預定壓力 ，該第一 上模具51 乂弟模具單元50是裝設於該壓力室2〇内 杈具單凡50具有一與該活塞桿121連接的第一 9 1220126 玫、發明說明（4 ) 、一相反於該第一上模具51的第一下模具52、一裝設於 δ亥第一上模具51上的第一壓力感測元件53，及一裝設於 该第一上模具51上的第一溫度感測元件54。該第一上模 具51具有一内側面511，及數電熱管512,該第一下模具 5 52具有一内側面521，及數電熱管522，當該第一上、下 杈具51、52閉合時，該等内側面511、521之間可密閉形 成第模八5 5，而，該第一壓力感測元件5 3是與該第 一杈穴55連通，而可感測該第一模穴55的壓力，在本實 靶例中，該第一壓力感測元件53是為一壓力計，該第一 1〇 溫度感測元件54可感測該等電熱管512、522加熱該第一 上、下模具51、52後的溫度，在本實施例中，該第一溫 度感測元件54是為一溫度計。 忒弟一模具單元6〇是裝設於該壓力室2〇内，該第二 模具單元60具有一第二上模具61、一相反於該第二上模 15 具61的第二下模具62，及一裝設於該第二上模具61上 的第二溫度感測元件63。該第二上模具61具有一内側面 611、數通孔612，及數可供冷卻水流通的冷卻通道613， 该第二下模具62具有一内側面621，及數可供冷卻水流 通的冷卻通道622，該内側面621具有數形成於其上的塑 型花紋6211，该第二溫度感測元件63可感測冷卻水冷卻 該第二上、下模具61、62後的溫度，在本實施例中，該 第二溫度感測元件63是為一溫度計。當該第二上、下模 具61、62閉合時’該等内側面611、621之間可形成一第 一模穴64 (見第六圖），而，該第二模穴64經該等通孔 10 1220126 玖、發明說明(5 ) 61=可與該壓力室20互相連通，且，該第二模穴64的容 積是大於該第一模穴55的容積。 。亥輸送單元70是裝設於該壓力室2〇内，並位於該第 一、二模具單元50、60之間，該輸送單元70具有一可轉 5動地裝設於該機台11上的轉軸71、一與該轉軸71樞接 而可相對於該轉軸71擺動的連接桿72，及一裝設於該連 接桿72的自由端上的吸盤73。 該供壓單元80是與該壓力室20連接，該供壓單元8〇 具有一與該壓力室20連接的壓力源81，及一裝設於該壓 1〇 力源81與該壓力室20之間的控制閥82，在本實施例中， 該壓力源81是為一空氣壓縮機。 參閱第一圖’利用上述的成型裝置，本發明之發泡 物^工壓成型方法的第一較佳實施例是以製造鞋底發泡物 作說明’該成型方法包含以下步驟： 15 步驟一：參閱第二圖，設置該機台單元10、該壓力 感測元件30、該調壓閥4〇，及該供壓單元8〇，並在該壓 力室20内準備該第一模具單元5〇、該第二模具單元6〇， 及该輸送單元70。 步驟二：參閱第二、三圖，將一發泡塑料110射入該 2〇 第一模穴55内，並利該等電熱管512、522加熱該第一上 、下模具51、52至165°C左右，使該發泡塑料110可交聯、 發泡為對應該第一模穴55形狀的一初胚120 (見第十圖） ’此時，該初胚120會對該第一模穴55造成一發泡壓力（ 根據實際量測約為7kg/cm2 )。 11 1220126 玖、發明說明（ό ) 步驟三：參閱第三圖，根據該第一壓力感測元件53 所量測到的該發泡壓力，使該壓力源8丨對該壓力室2〇施 加一加壓壓力，在本實施例中，該加壓壓力是實質上相 等於該發泡壓力。 步驟四：參閱第四、五、六圖，將該第一上、下模 具51、52開啟，使該轉軸71經該連接桿72帶動該吸盤73 於該第一、二模具單元50、60之間移動，以利用該吸盤 73吸附該初胚12〇，而將該初胚12〇從該第一上、下模具 51、52之間移置於該第二上、下模具61、62之間，如此 ’該初胚120可在該加壓壓力下移置於該第二上、下模具 61、62閉合形成的該第二模穴64内，在此過程中，該初 胚120是被該加壓壓力所迫壓，因此，該初胚丨2〇 (見第 十圖）並不會膨脹變大，而維持著對應該第一模穴55大 小的形狀。 步驟五·參閱第六、七圖，當該初胚12〇移置於該第 二模穴64内後，利用該調壓閥4〇的洩壓作用，將該壓力 室20的壓力從該加壓壓力減壓至一成型壓力，在本實施 例中，该成型壓力為一大氣壓，則，該初胚12〇在該成型 壓力下，即可於該第二模穴64内膨脹成型為一對應該第 一模穴64形狀的發泡體13〇。 步驟六：參閱第八圖，將冷卻水導入該等冷卻流道 613 622内，使该第二上、下模具^、62瞬間冷卻至 C〜25C左右（約耗時五分鐘至1〇分鐘），以使該發泡體 130於該第二模穴64内冷卻㈣，並形成對應該等塑型花 12 1220126 玖、發明說明（7) 紋6211的外型。 步驟七：參閱第九圖，將該第二上、下模具61、62 開啟，取出該發泡體130，即可得到製作成為標準品的該 發泡體130 (見第十一圖） 5 經由以上的說明，可再將本發明的優點歸納如下： 一、 本發明可控制該壓力室20的壓力，當該第一上 、下模具51、52開啟前，該壓力t 2〇的壓力已加壓至該 加壓壓力，因此，該第-上、下模具51、52是在該加壓 壓力下開啟，而該初胚12〇亦是在該加壓壓力下移置於該 1〇第二模穴64内，在此過程中，該初胚120的大小是受該 加壓壓力控制，而不會如習知技藝般因外界大氣壓力改變 而產生變化，接著，該壓力室2〇的壓力是從該加壓壓力 減壓至該成型壓力，因此，該初胚12〇是在該成型壓力下 ，而於該第二模穴64内膨脹並冷卻定型為該發泡體13〇 15 ，如此，不僅該發泡體130的形狀大小可完全對應該第二 模穴64的形狀大小，而成為標準品，且，該初胚12〇是 在定壓（該成型壓力）下膨脹並冷卻定型為該發泡體13〇 ，而不會如習知技藝般因外界大氣壓力改變而產生變化， 故，本發明可將該發泡體13〇的製造良率提昇至接近1〇〇 2〇 %，而不會浪費物料。 二、 利用本發明成型該發泡體13〇時，可在該第一上 、下模具51、52開啟後’即直接將該初胚12()移置於該 第二模穴64内，以使該初胚12〇膨脹並冷卻定型為完全 對應该第一模穴64形狀大小的該發泡體丨，因此，不 13 1220126 玖、發明說明（8 ) 僅該初胚12〇不需費時兩天靜置或費時地用随道供箱择 ，更重要的是’該發泡體13〇全完不需進行習知技 次壓塑型製程及其磨邊、退號的前置作業，即可成為Μ 品，故’本發明可有效縮短製造工時（約較習知技藝：短 二至五天）’而大幅提昇業者的出貨競爭力。 三、利用本發明成型該發泡體13〇僅需於該第一模具 單元50加熱該發泡塑料11〇 —次，及需於該第二模具的 冷卻該發泡體13G -次，即可完成該發泡體m ίο 15 反之，習知技藝於該熱壓發泡模具即需加熱該厲塑料 -次，且該發泡初胚於發泡膨脹後即需冷卻一二欠，再者， 習知技藝於進行二次麗塑型製程時，即需再將該發泡初胚 加熱一次並冷卻一次’因此’相較於習知技藝，本發明不 僅可節省能源，且可縮短加熱/冷卻加工所耗費的時間， =可簡化製造流程，而將習知技藝的兩次加熱/冷卻加工 簡化為一次加熱/冷卻加工。 參閱第十二圖，為本發明的一第二較佳實施例，該第 二較佳實施例是類似於該第一較佳實施例，其差異之處在 於： 本實施例是以製造球狀發泡物作說明，且，本實施例 2〇 包含以下步驟： 步驟一：參閱第十三圖，設置該機台單元10、該壓 力感測元件30、該調壓閥4〇，及該供壓單元8〇 ,並在該 壓力室20内準備該第一模具單元5〇。 步驟一 ·參閱第十三、十四圖，將一發泡塑料Μ晴 14 1220126 玖、發明說明（9 ) 入該第一上、下模具51、52閉合形成的該第一模穴55内 ，而交聯、發泡為一初胚150，該初胚15〇可對該第一模 穴55造成一發泡壓力。 步驟三：參閱第十四圖，利用該壓力源8丨對該壓力 5 室20施加一成型壓力（一般是為一大氣壓）。 步驟四：參閱第十四、十五圖，將該第一上、下模 具51、52開啟，使初胚15〇可在該成型壓力下膨脹成型為 一發泡體160。 如此，亦可達到與上述第一較佳實施例相同的目的與 1〇 功效。此外，在步驟三時，該壓力源81亦可先對該壓力 室20施加一加壓壓力，然後，在步驟四時，待該第一上 、下杈具51、52開啟後，再利用該調壓閥4〇將該壓力室 20的壓力從該加壓壓力減壓至該成型壓力，如此，亦可 使該初胚150在該成型壓力下膨脹成型為該發泡體16〇。 15 歸納上述，本發明之發泡物控壓成型方法，不僅可使 該初胚在-定壓❸竟下膨脹成型為該發㈣，以大幅提高 生產良率，並可有效縮短製造工時，且可節省加熱能源， 故確實能達到本發明之目的。 惟以上所述者，僅為本發明之較佳實施例而已，當不 2〇能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明書内容所作之簡單的等效變化與修飾，皆 應仍屬本發明專利涵蓋之範圍内。 15 1220126 玖、發明說明（10 ) 【圖式簡單說明】 第一圖是本發明發泡物控壓成型方法的一第一較佳實 施例的流程圖； 第二圖是該第一較佳實施例所採用的一成型裝置的作 5 動示意圖（一）； 第三圖是該成型裝置的作動示意圖（二）； 第四圖是該成型裝置的作動示意圖（三）； 第五圖是該成型裝置的作動示意圖（四）； 第六圖是該成型裝置的作動示意圖（五）； 苐七圖疋5亥成型裝置的作動示意圖（六）； 第八圖是該成型裝置的作動示意圖（七）； 第九圖是該成型裝置的作動示意圖（八）； 第十圖是該第-較佳實施例於第三圖中所成型的一初 胚的立體外觀示意圖； 15 帛十—圖是該第—較佳實施例於第九圖中所成型的一 發泡體的立體外觀示意圖； 第十二圖是本發明發泡物控壓成型方法的一第二較佳 實施例的流程圖； 第十二圖是該第二較佳實施例所採用的一成型裝置的 2〇 作動示意圖（一）； 第十四圖是該成型裝置的作動示意圖（二）；及 第十五圖是該成型裝置的作動示意圖（三）。 16 25 1220126 玖、發明說明（11 ) 【圖式之主要元件代表符號簡單說明】 1 0 '! * C. ΐ « * ………機台單元 612… ………"通孔 11 *«〜ί：« ^ Jt a ^ n <： ^、 613" 一………冷卻流道 1 *>.*?»* ………油在丁 62… …一…第二下模具 121… ……"活塞桿 621… ;* " “ 。j貝丨J 1 Λ ί； ψ ί>. >； ………油^丁 6211 >……塑型花紋 131… ……“活塞桿 622… …一…冷卻流道 2〇… “……壓为室 63 "" …一…第二溫度感測元件 2Q…… ……"壓力感測元件 6心… ………·第二模穴 0 *""令 ……"調壓閥 70…* ………*輸送單元 50…… ………第一模具單元 7卜" ………*轉轴 51…… 8……第一上模具 72…* ……s…連接桿 511 …“ ……“内側面 73 ………s吸盤 512 80… ……""供壓單兀 52…… 4……第一下模具 81… ………壓力源 521 ……"内側面 82…* ……一控制閥 m… 110… ………*韻^泡塑料 53…… ……"第一壓力感測元件 120… * — * *β * * * 不刀 54…… "……第一溫度感測元件 130… ………發泡體 55…… …"…第一模穴 140… …κ……發泡塑料 60…… 一…第二模具單元 150… ………才刀 61 …"…第二上模具 160… ……一發泡體 611… ………内側面 171220126 发明 Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a method for forming a foam, and particularly to a method capable of expanding a primary embryo into a foam under a constant pressure environment. Pressure-control molding method for foam. 5 [Prior art] The manufacturing method of the conventional EVA foam sole is generally to inject an eva plastic into a cavity of a hot-pressing foaming mold, and heat the hot-pressing foaming mold to a touchable cross-linking, The temperature of the bubble reaction can make Yanhai EVA plastic cross-link and foam in the mold cavity. In this way, after the EVA plastic 10 parent material is connected and the foaming reaction is completed, the hot-pressed foam mold is opened, that is, An instantaneous expansion-molded foamed embryo can be obtained. At this time, in order to cool and set the foamed embryo, to facilitate the secondary compression molding process, the foamed embryo is usually left in the room for about two days. , Wait for the foaming embryo to cool down and set. 15 However, 'because the indoor atmospheric pressure when the hot-pressed foaming mold is opened will change at any time due to changes in the external environment (such as weather changes), and the indoor atmospheric pressure during the cooling of the primary foaming embryo will also change. Changes will occur at any time due to changes in the external environment. Therefore, the yield of the foamed primary embryos that become standard after cooling and setting is generally only about 70%. As a result, before the 20 second compression molding process, the industry must first Too large defective products are edged and trimmed, and too small defective products are numbered back. After that, the foamed primary embryos that meet the size standard can be placed in the secondary and secondary compression molding molds. The foamed primary embryo is hot-pressed and cooled to form a finished product with appropriate patterns. Therefore, the general secondary compression molding process takes about three days (including grinding 7 1220126 玖, description of the invention (2) edge, back number Prerequisites). In order to improve the yield of the foamed embryos that become standard products after cooling and setting, some people place the foamed embryos after expansion molding into a tunnel oven, so that the foamed embryos are in a temperature-controlled environment. Temperature shrinkage and cooling setting (5 usually takes eight hours), but because the indoor atmospheric pressure at the moment the hot-press foaming mold is opened will still vary with the external environment, this method generally only The rate is increased to about 85%, and the remaining defective products still need to be pre-sharpened and retired before the second compression molding process. Therefore, after using the tunnel oven, the industry still needs to perform time-consuming Times ίο Compression molding process (including pre-operation of edging and withdrawal). [Summary of the Invention] Therefore, an object of the present invention is to provide a foam pressure-control molding method for expanding a primary embryo into a foam under a certain pressure environment to improve the production yield and shorten the manufacturing time. . 15 Therefore, the foam pressure-control molding method of the present invention includes: (A) preparing at least a first mold unit in a pressure chamber, the first mold unit having a first upper mold, and an opposite to the first The first lower mold of the upper mold. (B) A foamed plastic is placed in a first cavity formed by the closing of the first upper and lower molds, and crosslinked and foamed into a primary embryo. The primary embryo 20 may cause A foaming pressure. (C) A molding pressure is applied to the pressure chamber. (D) The first upper and lower molds are opened, and the primary embryo is expanded into a foam under the molding pressure. [Embodiment] The foregoing and other technical contents, features, and effects of the present invention will be clearly understood in the detailed description of the preferred embodiment with reference to the drawings under the description of the invention (3). Before giving a detailed description, it should be noted that in the following description, similar elements are represented by the same number. 5 Referring to the second figure, a molding device used in a first preferred embodiment of the foam pressure-control molding method of the present invention includes: a machine unit 10, a pressure chamber 20, a pressure The sensing element 30, a pressure regulating valve 40, a first mold unit 50, a second mold unit 60, a conveying unit 70, and a pressure supply unit 80. 10 The machine unit 10 has a machine 11 and two hydraulic cylinders 12 and 13 installed on the machine 11. The hydraulic cylinders 12 and 13 respectively have a retractable piston rod 121 and 131, The piston rods 121 and 131 extend into the pressure chamber 20 and can be connected to the first and second mold units 50 and 60 respectively to open / close the first and second mold units 50 and 60. 15 The pressure chamber 20 is formed inside the machine 11. The pressure sensing element 30 is installed on the machine table u and communicates with the pressure chamber 20, and can sense the pressure of the pressure chamber 10. In this embodiment, the 'δHai pressure sensing element 30 is for A pressure gauge. The withering valve 40 is installed on the machine 11 and is connected to the pressure chamber L and can be used for depressurizing the pressure chamber 20, and the pressure regulating valve 40 can be set with a set steam pressure resistance. The pressure chamber 20 can be decompressed to a predetermined pressure. The first upper mold 51 and the second mold unit 50 are installed in the pressure chamber 20. The inner frame 50 has a first connection with the piston rod 121. 9 1220126 Rose, description of the invention (4), a first lower mold 52 opposite to the first upper mold 51, a first pressure sensing element 53 installed on the first upper mold 51 of δ11, and a device A first temperature sensing element 54 is provided on the first upper mold 51. The first upper mold 51 has an inner side surface 511 and an electric heating tube 512. The first lower mold 5 52 has an inner side surface 521 and an electric heating tube 522. When the first upper and lower forks 51 and 52 are closed, At this time, the inner side surfaces 511 and 521 can be sealed to form a first mold cavity 55, and the first pressure sensing element 53 is in communication with the first branch cavity 55, and the first mold cavity can be sensed. The pressure of 55. In the actual target example, the first pressure sensing element 53 is a pressure gauge, and the first 10 temperature sensing element 54 can sense the electric heating tubes 512, 522 to heat the first pressure sensor. The temperature after the lower molds 51 and 52. In this embodiment, the first temperature sensing element 54 is a thermometer. A second mold unit 60 is installed in the pressure chamber 20. The second mold unit 60 has a second upper mold 61 and a second lower mold 62 opposite to the second upper mold 15. And a second temperature sensing element 63 mounted on the second upper mold 61. The second upper mold 61 has an inner side surface 611, a number of through holes 612, and a number of cooling channels 613 through which cooling water can flow. The second lower mold 62 has an inner side surface 621, and a number of cooling channels through which cooling water can flow. The channel 622, the inner side surface 621 has a number of molding patterns 6211 formed thereon, and the second temperature sensing element 63 can sense the temperature after cooling the second upper and lower molds 61 and 62 with cooling water. In an example, the second temperature sensing element 63 is a thermometer. When the second upper and lower molds 61 and 62 are closed, a first mold cavity 64 may be formed between the inner side surfaces 611 and 621 (see the sixth figure), and the second mold cavity 64 is passed through the passages. Hole 10 1220126 玖, invention description (5) 61 = can communicate with the pressure chamber 20, and the volume of the second cavity 64 is larger than the volume of the first cavity 55. . The conveying unit 70 is installed in the pressure chamber 20 and is located between the first and second mold units 50 and 60. The conveying unit 70 has a rotating and movably installed on the machine 11 The rotating shaft 71, a connecting rod 72 pivotally connected to the rotating shaft 71 and swingable relative to the rotating shaft 71, and a suction cup 73 mounted on the free end of the connecting rod 72. The pressure supply unit 80 is connected to the pressure chamber 20, and the pressure supply unit 80 has a pressure source 81 connected to the pressure chamber 20, and a pressure source 81 installed between the pressure source 81 and the pressure chamber 20. In this embodiment, the pressure source 81 is an air compressor. Refer to the first figure 'Using the above-mentioned molding device, the first preferred embodiment of the foaming method ^ pressure forming method of the present invention is illustrated by manufacturing a sole foaming material' The molding method includes the following steps: 15 Step one: Referring to the second figure, the machine unit 10, the pressure sensing element 30, the pressure regulating valve 40, and the pressure supply unit 80 are set, and the first mold unit 50 is prepared in the pressure chamber 20. The second mold unit 60 and the conveying unit 70. Step 2: Referring to the second and third figures, a foamed plastic 110 is injected into the 20 first cavity 55, and the electric heating pipes 512, 522 are used to heat the first upper and lower molds 51, 52 to 165 At about ° C, the foamed plastic 110 can be crosslinked and foamed into a primary embryo 120 corresponding to the shape of the first mold cavity 55 (see the tenth figure) 'At this time, the primary embryo 120 will The cavity 55 causes a foaming pressure (approximately 7 kg / cm2 according to actual measurement). 11 1220126 发明, description of the invention (ό) Step 3: Referring to the third figure, according to the foaming pressure measured by the first pressure sensing element 53, the pressure source 8 丨 applies a pressure to the pressure chamber 20 Pressing pressure. In this embodiment, the pressing pressure is substantially equal to the foaming pressure. Step 4: Referring to the fourth, fifth, and sixth drawings, open the first upper and lower molds 51 and 52, and cause the rotating shaft 71 to drive the suction cup 73 to the first and second mold units 50 and 60 through the connecting rod 72. Between the first upper and lower molds 51, 52 and between the second upper and lower molds 61, 62 In this way, 'the embryonic embryo 120 can be moved under the pressure to the second cavity 64 formed by the closing of the second upper and lower molds 61 and 62. In the process, the embryonic embryo 120 is Compression pressure is applied, so the primary embryo 20 (see the tenth figure) does not swell and grow, and maintains a shape corresponding to the size of the first cavity 55. Step 5 · Referring to the sixth and seventh figures, after the primary embryo 120 is moved into the second cavity 64, the pressure of the pressure chamber 20 is removed from the pressure by using the pressure relief function of the pressure regulating valve 40. The compression pressure is reduced to a molding pressure. In this embodiment, the molding pressure is one atmosphere. Then, under the molding pressure, the primary embryo 120 can be expanded and formed into a pair in the second cavity 64. The foam 13 which should be in the shape of the first cavity 64. Step 6: Referring to the eighth figure, the cooling water is introduced into the cooling channels 613 622, and the second upper and lower molds ^ and 62 are instantly cooled to about C ~ 25C (about 5 minutes to 10 minutes) In order to make the foam body 130 cool in the second cavity 64, and form the shape corresponding to the shaped flowers 12 1220126 (invention description (7)) 6211. Step 7: Refer to the ninth figure, open the second upper and lower molds 61 and 62, and take out the foam body 130 to obtain the foam body 130 made as a standard product (see FIG. 11). 5 Via The above description can further summarize the advantages of the present invention as follows: 1. The present invention can control the pressure of the pressure chamber 20. Before the first upper and lower molds 51 and 52 are opened, the pressure of the pressure t20 has been increased. Pressure to the pressing pressure, therefore, the first and the lower molds 51, 52 are opened under the pressing pressure, and the primary embryo 120 is also moved to the 10 second under the pressing pressure In the cavity 64, during this process, the size of the preform 120 is controlled by the pressurizing pressure, and does not change due to changes in external atmospheric pressure as is known in the art. Then, the pressure in the pressure chamber 20 The pressure is reduced from the pressurizing pressure to the molding pressure. Therefore, under the molding pressure, the primary embryo 120 is expanded and cooled in the second cavity 64 to be shaped into the foam 1310. Not only the shape and size of the foam 130 can completely correspond to the shape and size of the second cavity 64, but It is a standard product, and the primary embryo 120 is expanded and cooled under constant pressure (the molding pressure) to form the foam 13, and it will not change due to changes in external atmospheric pressure as is known in the art. According to the present invention, the manufacturing yield of the foamed body 13 can be increased to approximately 1002% without wasting materials. 2. When the foamed body 13 is formed by using the present invention, the primary embryo 12 () can be directly moved into the second cavity 64 after the first upper and lower molds 51 and 52 are opened. The primary embryo 120 is expanded and cooled to form the foam which completely corresponds to the shape and size of the first cavity 64. Therefore, no 13 1220126 玖, description of the invention (8) Only the primary embryo 120 does not take two hours. It is time to stand still or take time to use the box for selection. More importantly, 'the foam body 13 is completely complete without the need for a conventional technical compression molding process and the pre-work of edging and retirement, that is, It can become M product, so 'the invention can effectively shorten the manufacturing man-hours (about 2 to 5 days shorter than conventional techniques)' and greatly improve the shipping competitiveness of the industry. 3. Using the present invention to mold the foamed body 130 only needs to heat the foamed plastic 110-times in the first mold unit 50 and cooling the foamed body 13G-times in the second mold. Completing the foam m ίο 15 Conversely, the conventional technique requires heating the plastic once in the hot-pressing foaming mold, and the foaming primary embryo needs to be cooled one or two times after foaming and expansion, and When the conventional technique is performed in the second molding process, the foamed primary embryo needs to be heated once and cooled once again. Therefore, compared with the conventional technique, the present invention can not only save energy, but also shorten heating / cooling. The time spent in processing = The manufacturing process can be simplified, and the two heating / cooling processes of the conventional technique can be simplified into one heating / cooling process. Referring to the twelfth figure, a second preferred embodiment of the present invention is shown. The second preferred embodiment is similar to the first preferred embodiment, and the differences are as follows: This embodiment is to make a spherical shape. The foam is described as an example, and this embodiment 20 includes the following steps: Step 1: Referring to the thirteenth figure, setting up the machine unit 10, the pressure sensing element 30, the pressure regulating valve 40, and the supply Press the unit 80 and prepare the first mold unit 50 in the pressure chamber 20. Step one: Referring to the thirteenth and fourteenth drawings, a foamed plastic M clear 14 1220126 玖, invention description (9) is inserted into the first cavity 55 formed by the closing of the first upper and lower molds 51 and 52, The cross-linking and foaming is a primary embryo 150, and the primary embryo 150 can cause a foaming pressure to the first cavity 55. Step 3: Referring to the fourteenth figure, use the pressure source 8 丨 to apply a molding pressure to the pressure 5 chamber 20 (generally, one atmosphere). Step 4: Referring to the fourteenth and fifteenth drawings, the first upper and lower molds 51 and 52 are opened, so that the primary embryo 150 can be expanded into a foamed body 160 under the molding pressure. In this way, the same purpose and 10 effects as the first preferred embodiment described above can also be achieved. In addition, in step three, the pressure source 81 may also apply a pressure to the pressure chamber 20 first, and then in step four, after the first upper and lower forks 51 and 52 are opened, the pressure source 81 may be used. The pressure regulating valve 40 depressurizes the pressure in the pressure chamber 20 from the pressurizing pressure to the molding pressure. In this way, the preform 150 can also be expanded and molded into the foamed body 16 at the molding pressure. 15 In summary, the foam pressure-controlling molding method of the present invention can not only expand the primary embryo into the hairpin under a constant pressure to increase production yield significantly, but also effectively shorten manufacturing hours. In addition, heating energy can be saved, so the object of the present invention can be achieved. However, the above are only the preferred embodiments of the present invention. If not 20, the scope of the present invention can be limited by this, that is, the simple equivalent changes made according to the scope of the patent application and the content of the invention specification. And modifications should still fall within the scope of the invention patent. 15 1220126 发明 Description of the invention (10) [Schematic description of the drawings] The first diagram is a flowchart of a first preferred embodiment of the pressure-control molding method of the foam of the present invention; the second diagram is the first preferred embodiment The operation diagram of a molding device used in the example (1); the third diagram is the operation diagram of the molding device (b); the fourth diagram is the operation diagram of the molding device (c); the fifth diagram is the molding The operation diagram of the device (four); the sixth diagram is the operation diagram of the molding device (five); 苐 7 Figures 疋 5hai the operation diagram of the molding device (six); the eighth diagram is the operation schematic diagram of the molding device (seven) The ninth figure is a schematic diagram of the operation of the molding device (eight); the tenth figure is a schematic diagram of the three-dimensional appearance of an initial embryo formed by the third-best embodiment in the third figure; —A schematic diagram of the three-dimensional appearance of a foam formed by the preferred embodiment in the ninth figure; FIG. 12 is a flowchart of a second preferred embodiment of the pressure-control molding method of the foam of the present invention; The second figure is the second preferred implementation 2〇 a molding apparatus employed actuation schematic diagram (a); FIG fourteenth actuator is a schematic view (b) of the molding apparatus; and FIG fifteenth actuator is a schematic diagram (c) of the molding device. 16 25 1220126 发明 Description of the invention (11) [Simplified description of the main symbols of the drawings] 1 0 '! * C. ΐ «* ……… Machine unit 612… ……… through hole 11 *« ~ ί: «^ Jt a ^ n <: ^, 613 " One ......... Cooling runner 1 * >. *?» * ............ The oil is in Ding 62 ... One ... The second mold 121 ... " Piston rod 621 ...; * " ". j 贝 丨 J 1 Λ ί; ψ ί >. >; ... …… 油 ^ 丁 6211 > ... Shaping pattern 131 ... ......" Piston rod 622 ... … One… Cooling channel 2〇… “... Pressure chamber 63 " "… One ... Second temperature sensing element 2Q ......... " Pressure sensing element 6 core ... Hole 0 * " " Order ... " Pressure regulating valve 70 ... * ......... * Conveying unit 50 ... ...... First mold unit 7 bu ... ...... * Rotary shaft 51 ... 8 …… The first upper mold 72 ... * ... s ... connecting rod 511 ... "..." "Inner side 73 ... s suction cup 512 80 ..." " " Supply unit 52 ... 4 ... first lower mold 81… ……… pressure source 521 …… " Inner side 82… * …… A control valve m… 110……… rhyme ^ foam 53 …… …… " the first pressure sensing element 120 ... * — * * β * * * No knife 54 ... " ... first temperature sensing element 130 ... ...... foam 55 ... ...... first mold cavity 140 ... κ ... foamed plastic 60 ... one ... second Mould unit 150…… only knife 61… &…… the second upper mold 160… a foam body 611…… inner side 17