1352635 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種具有複數個在一組模具中形成之模— 的壓鑄用模具。 、八 【先前技術】 如（例如）專利文獻1中所揭示’在應用中常見之習知壓 禱機具有用於一組固定模具及可移動模具的單一模穴。為 使用該類壓鑄機提高生產率，可預想在一組如圖12中所示 之模具内提供複數個模穴。 圖12為具有兩個成型模穴之習知壓鑄用模具的剖視圖。 在圖中展示：模具101、第一及第二模穴102及103、針對 各模穴所形成之流道104及105及澆口 106。 第一及第二模穴102及103彼此以相同形狀自然成型以便 產品（缚件）之形狀彼此一致。該等模穴102及103以相等距 離位置形成於以澆口 106為中心之模具101之一側與另一側 上。 該等模穴102及103分別與流道104及105之下游側端部經 由分別在三個位置處提供之進模口 107連接。進模口 107在 一模穴102中之位置與在另一模穴103中之位置相同。 形成兩個流道104及105以便使炫融金屬自洗口 106分布 至三個進模口 107。該等流道1〇4及105經形成以自澆口 106 延伸至模具101之一側與另一側，以便經由最短距離連接 澆口 106與進模口 107。 專利文獻1:日本特公平7-73783號公報 128366-1000915.doc 1352635 【發明内容】 [本發明欲解決之問題] 然而，如上所述構成之習知壓鑄用模具1〇1並不總能夠 以相同品質鑄造兩個產品且生產率並未提高至如所預期之 程度。 由於緣於兩個鑄件在品質上不相等或不幾乎相等之試驗 及誤差，故發明者得出用熔融金屬填充模穴在第一模穴 102與第二模穴1()3之間不均衡的想法。換言之將炫融金 屬自圖式之右側注入第一模穴1〇2中且自左側注入第二模 穴103中。結果，不可能於兩個模穴1〇2與1〇3之間均衡熔 融金屬流入兩個模穴102及103之流動條件。流動條件為熔 融金屬之流向、流速、流率及其類似因素。 本發明已解決上述問題。因此，本發明之目的在於提供 -種壓鑄用模具’其使得在相等流動條件下均勻分布熔融 金屬至複數個模穴中且以單一鑄造法鑄造複數個具有高及 一致品質之鑄件成為可能。 [解決問題之方法] 為實現上述目的，本發明係關於一種壓鑄用模且，1 有.複數個模穴，其形成於一組能夠開模及閉模之固定模 具及可移動模具_以便可同時鑄造複數個具有相同形狀之 產品；及 /瓜道，其提供於固定模具中以經由與柱塞連接之澆口將 熔融金屬引入各模穴中，其中該流道具備第一分配部其 自澆口側與開模及合模方向正交地延伸至對應於各模穴之 128366-1000915.doc 1352635 位置；及第二分配部，其具有自各模穴之第-分配部之下 游側端部平行於開模及合模方向延伸的前後方向延伸部。 如請求項2之本發明係關於如請求項丨之壓鑄用模具，其 中第二分配部中之每-者針對各模穴進一步具備自以前後 方向延伸部1下游端構成之模穴側洗口延伸至各模穴的模 穴側流道，該等模穴侧流道分別自模穴侧澆口以與開模及 合模方向正交之方向延伸，且該等模穴侧流道在形狀上經 成型以便炫融金屬在相同流動條件下流入模穴。 如請求項3之本發明係關於如請求項丨之壓鑄用模具，其 中該固定模具由具有與柱塞連接之淹σ之基礎模具及置於 基礎模具與可移動模具之間以便在開模及合模方向上移動 至該基礎模具並從該基礎模移開的中間模具組成，該等模 穴經形成於令間模具與可移動模具之間，第一分配部經形 成於基礎模具與中間模具之間且第二分配部之前後方向延 伸部經形成以貫通中間模具。 如請求項4之本發明係關於如請求項2之壓鑄用模具，其 中該固定模具由具有與柱塞連接之澆口之基礎模具及置於 基礎模具與可移動模具之間以便在開模及合模方向上移動 至該基礎模具並從該基礎模移開的中間模具組成，該等模 穴經形成於令間模具與可移動模具之間，第一分配部經形 成於基礎模具與中間模具之間，第二分配部之前後方向延 伸部經形成以貫通中間模具，且模穴側流道經形成於中間 模具與可移動模具之間。 如請求項5之本發明係關於如請求項丨至4中任一項之壓 128366-1000915.doc -9- 1352635 鑄用模具，其中流道之第一分配部由與位於柱塞側之澆口 連接之上游部及複數個自上游部分支至各模穴之分支部組 成，且 該等分支部於上游部之中心線兩側以線對稱形式形成。 [本發明之效果] 根據本發明，將自柱塞經由澆口流入流道中之熔融金屬 經由第一分配部分布至各模穴中。當熔融金屬流自第一分 配部流入第二分配部之前後方向延伸部中時，分布至各模 穴中之熔融金屬流之方向與開模及合模方向對準。因此， 對於所有模穴，熔融金屬在相同流動條件下自第二分配部 流入該等模穴中。 因此，根據本發明，當熔融金屬以均勻分布狀態自流道 之第二分配部流入各模穴中時，對於複數個模穴而言填充 係以均衡狀態進行。結果，本發明可能提供一種使以單一 鑄造法鑄造複數個高及一致品質之產品成為可能的壓鑄用 模具。 根據第二發明，當熔融金屬自第二分配部之前後方向延 伸部流入模穴側流道中時，熔融金屬流方向改變成與開模 及合模方向正交，且熔融金屬在均勻流動條件下流入各模 穴。因此，有可能將熔融金屬以此方向注入複數個模穴以 產生最高品質之鑄件且提供提高鑄件品質之壓鑄用模具。 根據如請求項3及4之本發明，當在鑄造製程之後中間模 具及可移動模具與基礎模具分離時，暴露出藉由在澆口中 凝固熔融金屬所形成之澆口内鑄件及藉由在流道之第一分 128366-1000915.doc •10- 1352635 配部中凝固熔融金屬所形成的第一分配部中之鑄件。因一 該等鑄件經形成以自，間模具之端面突出 因為 rt/V 你n 丨M再易於移 示。移示洗口及第一分配部中之該等錄件使得取出藉由凝 固炫融金屬在自中間模具朝向模穴之流道之第二分^部中 所形成之鑄件成為可能。㈣，有可能藉由開啟中間模且 及可移動財而自模具移除具有產品部分之整個鑄件/、 因此’根據本發明’有可能易於移除藉由在如上所述之 洗口及流道之第—分配部中凝㈣融金屬所形成的洗口内 铸件及第一分配部令之鎢件。 因此，有可能提供一種壓鑄用模具，即使流道在三維空 間上延伸而形成複雜形狀，其亦促成包括移除不必要^ 之步驟之鑄造方法。 像以項5之本發明，有可能料融金屬更精確地 刀布至針對各模穴所形叙分支部巾以便各模穴之流動條 件(熔融金屬之流向、流速及流率)相同。因此，有可能使 複數個藉由單一鑄造法所製造之鑄件的品質差異最小化。 【實施方式】 [執行本發明之最佳形式] (第一實施例） 將在下文參考圖i至9來描述作為本發明之一實施例的塵 鑄用模具。 圖1至5為本發明之壓德用爐目4 坚鱗用模具之剖視圖。圖1展示模具 在閉合之前之狀態。圖2屏千媪 _ d z展不模具當進行鑄造時之狀態。 圖3展示後鑄造狀態（臨時停 ^ ^ ^ ^ 11T 狀態）’其十可移動模具及中 128366-1000915.doc 1352635 間模具自基礎模具 一分配部t之鑄件 處可移動模具自中 態。 中移出。圖4展示切除澆口内鑄件及第 的狀態。圖5展示在圖4之臨時停止位置 間模具中移出同時離開中間模具的狀 成= 為一可移動模具之一實例之正視圖：主要模具及具有 成^模八之插入物。 圖7為根據本發明之壓鎿用模具之部 分的構造的正視圖，熔 八 琢嘁金屬於其中流動。圖8為相同部 刀之斜視® °圖9為當炫融金屬凝固於堯σ、流道及模穴 中時所形成之_件之形狀的側視圖；《中產品部分呈截面 形式此處所說明之實施例為用於鑄造機車引擎之紹合金 曲柄軸箱的壓鑄用模具。 該等圖S π作為本發明之一實施例的壓禱用模具卜此 壓鑄用模具1為—種進行所謂的高速高壓壓鎮的模具且安 裝於壓鎮機（未展示）之機器底座2上。壓鑄用模具ι由以下 組成.固定模具5,其由在圖丨中位於最左邊之基礎模具3 及鄰近於前者之中間模具4組成；及可移動模具6，其位於 同一圖中之最右邊。 固定模具5之基礎模具3固定於機器底座2上且具備四個 用於限定中間模具4之行進方向及距離的連桿7，其將隨後 進行描述。基礎模具3亦具備：柱塞套筒8及用於形成欲隨 後描述之流道9之第一分配部1〇(參見圖7及8)的流道用插入 物11 °可自由移動柱塞頭12裝配於柱塞套筒8中。柱塞頭 12及柱塞桿13構成如本發明所用之柱塞14。 以與柱塞套筒8連接之澆口 15及用於形成流道之凹槽16 128366-1000915.doc •12- 1352635 形成流道用插入物1 1。 如圖1中所示，中間模具4由第一主要模具21及裝配且緊 固於第主要模具21中之第一插入物22組成且支擇於機器 底座2上以由連桿7限定之運動方向自由運動。在對應於中 間模具4之四個角的位置處提供連桿7以限定中間模具4之 左右運動方向（在圖1至5中）。在此壓鑄用模具丨中以開模 及合模方向進行中間模具4之運動方向。連桿7具有限定中 間模具4自基礎模具3之行進距離的構造以便中間模具*不 自基礎模具3移動至預定距離以外。 中間模具4為固定模具之部分且用複數個壓縮盤簧（未展 示）以遠離基礎模具3之方向常時施力。在不施加外力之狀 態中，以連桿7將中間模具4固持於與基礎模具3具有所規 定距離之位置處。將壓縮盤簧用複數個呈指向中間模具4 形式安置於連桿7附近之基礎模具3之部分上的柱子固持且 彈性地插入基礎模具3與中間模具4之間。中間模具4具備 §主道概套23、定位銷24及短柱切割機25。 第一插入物22與第二插入物26及隨後所描述之可移動模 具6之滑動插入物27協同形成兩個模穴31(參見圖6)。如圖1 中所示，第一插入物22經裝配且緊固於位於相對基礎模具 3之側的中間模具4之内端4a中。在圖6中順便提及，所提 供以自第二插入物26突出之陽模26a之表面經指示為模穴 31 0 在第一及第一插入物22及26中在水平方向上並排提供此 實施例之兩個模穴31、31。圖6描述當自第一插入物22側 j28366-1000915.doc -13· 1352635 檢視時第二插入物26之視圖。以相同方向及相同形狀形成 圖6中所展示之兩個模穴31、31以便在模穴31中所形成之 產品具有相同形狀。 將炫融金屬經由三個在各模穴31之較低端處開放之進模 口 32注入該等模穴31、31中。在一模穴31中形成該等進模 口 32之位置亦與另一模穴31中之位置相同。如圖6中所 不’該等進模口 32連接至如隨後將描述之流道9之模穴側 流道33。 亦如圖6中所示，模穴3 1分別與滿溢出口 34及排氣通道 35連接》此等滿溢出口 34及排氣通道35在第二插入物^中 分別形成為凹槽狀。以第一插入物22之平面（未展示）封閉 該等凹槽之開口。 形成於一模穴3丨中之滿溢出口 34及排氣通道35之形狀亦 與在另一模六31中所形成者相同。排氣通道35之前端具備 通常所熟知之冷卻排氣口 36。將冷卻排氣口 ％提供於可移 動模具6之第—主要模具21與第二主要模具叫欲隨後描述） 中讀當中間模具4與可移動模具6彼此緊密配合時於兩個 冷部排乳口36、36之間形成迷宮式結構的風道^該等風道 與大氣經由主要模具21與41之間所形成的微小間隙連接。 中間模具4中所提供之注道襯套23在其内部具備錐形孔 二以便中間模具4之移動方向貫通第-主要模具 內:：轴人物22。如圖1中所示’形成錐形孔23a以便盆 内徑朝向可移動模具6逐漸增加。 尤，、 定位銷24係用於欲隨後描述之於中間模具4與可移動模 128366-1000915.doc 1352635 八6之間的相對定位且將其以裝配於凹陷於可移動模具6中 之定位孔37(圖1)中之形式提供。儘管在圖1至5中僅描述中 間模具4及可移動模具6之下半部中的一定位銷24及一定位 孔37，但實際上其亦提供於中間模具4及可移動模具6之上 半部中。在此實施例中，四個定位銷24及四個定位孔37提 供於第一插入物22與第二插入物26之四角附近。 短柱切割機25使用以下構造：其中與中間模具4之相對 基礎模具3之外端面仆（圖1}接觸置放的刀片25&在垂直方向 上平行移動。如圖3中所示，短柱切割機25切除自中間模 具4犬出之鑄件。上述鑄件由當熔融金屬凝固於澆口 μ中 時所形成之澆口内鑄件38及當熔融金屬凝固於流道9之第 一分配部10(凹槽16)中時所形成的第一分配部中之鑄件39 組成。當閉合模具時，短柱切割機25插入基礎模具3之切 割機裝載凹座3a中。 如圖1中所示之可移動模具6由第二主要模具41、裝配且 緊口於第一主要模具41中之第二插入物26及滑動模具42組 成，且支撐於機器底座2上以平行於中間模具4之移動方向 自由運動。可移動模具6與致使可移動模具6開模及閉模之 模具閉合裝置（未展示）連接。可移動模具6接近中間模具4 之方向為如本文中所用之模具閉合方向，且可移動模具6 與中間模具4分離之方向為模具開啟方向。 模具閉合裝置經構造以便有可能當閉合可移動模具6時 移動可移動模具6至圖丨至5中之左側且使其與中間模具4接 觸，且克服施加彈力至中間模具4之壓縮盤簧之回彈力而 128366-1000915.doc -15- 1352635 使模具4與6以一體形式朝基礎模具3移動。 模具閉合裝置亦使用在鑄造製程後移動可移動模且6至 圖⑴之右側且使其停止於中間模具4與基礎模具3分離規 定距離之狀態（圖3)的構造。規定距離為所產生之以下間 隔：中間模具4之外端面4b上所暴露的洗口㈣㈣及第 一分配部中之鑄件39可經由該間隔落下，且中間模具4在 移動上不受連桿7限制。 當中間模具4與基礎模具3分離規定距離且停止時中間 模具4之位置在以下描述中簡稱為臨時停止位置。模具閉 合裝置亦經構造以將可移動模具6進_步自自時停止位置 移動至右側，遠離中間模具4。 如圖6中所示之第二插入物26之外形當自中間模具4側檢 視時為矩形。第二插入物26以其較長側在水平方向上與第 二主要模具41連接。製造在外形上與第二插入物26相同'之 第一插入物22且使其以其較長側在水平方向上與第一主要 模具2 1連接。 在第二插入物26之四角附近於第二主要模具…中鑽孔定 位孔3 7。 針對各模穴31提供滑動模具42且其由自上方面向模穴^ 之内部的滑動插入物27及用於提昇及降下滑動插入物口之 4 3 組成。 如圖6至8中所示形成用於將熔融金屬引入模穴31中之流 道9。圖7及8描述藉由在不中途切斷之情況下自模具中取 出之狀態中在自洗口 15至模穴31之整個範圍上凝固炫融金 •28366-l00Q9i5.doc 13526.35 屬所形成的單—鱗件。因為在模具it所形成之流道9及模 八31之形狀對應於此鑄件之形狀，所以此鑄件具備欲隨後 描述之流道9之各部位的參考數字以及模穴之參考數字 31。順便提及，因為圖6展示可移動模具6之—般構造所 以展示於圖7及8中之模穴31、模穴側流道33、滿溢出口 μ 及排氣通道35之形狀不同於圖6中所示者。 流道9由以下組成：第一分配部1〇、1〇，其在與中間模 具4及可移動模具6之開模及合模方向正交的方向上（平行 於圖6及7之圖示表面）自澆口 15延伸至對應於各模穴η之 位置；及針對各模穴31之第二分配部51，其用於互連針對 各模六31之第一分配部10、1〇之下游側端部l〇a與模穴η 之進模口 32。第二分配部51由以下組成：前後方向延伸部 51a’其在平行於開模及合模方向之方向上自第一分配部 10之下游側端1 Oa延伸；及模穴側流道33，其自以前後方 向延伸部5 1 a之下游端形成之模穴側澆口 5丨b(圖8)延伸至模 穴31(進模口 32分支）。 第一分配部10以凹槽16形式形成於基礎模具3中所提供 之流道用插入物11(圖1)中。在如圖6至8中所示之此實施例 中’第一分配部10由自洗口 15向上延伸之單個上游部 5 2(為兩個模六31所共有）及兩個自上游部52分支至各模穴 3 1之分支部53、53組成。如圓6及7中所示以線對稱形式於 上游部52之尹心線C兩側形成該等分支部53、53 ^在此實 施例中如圖6及7中所示以在開模及合模方向上所見之w形 狀形成分支部53、53。 128366-10009I5.doc • 17· 1352635 第二分配部51之前後方向延伸部51a上形成有注道襯套 23之錐形孔23 a且如圖9中所示自兩個第一分配部中之每 一者之下游側端部（前端部）1 〇a平行於開模及合模方向（在 圖9中之橫向）延伸。以彼此相同之形狀形成兩個前後方向 延伸部51a、51a〇短柱切割機25經構造以切除部分與第一 分配部10連接之前後方向延伸部51&。 如圖1及6中所示’將第二分配部51之模穴側流道33以凹 槽形式形成於第二插入物26中。如圖6及7中所示之模穴側 流道33經形成以在與開模及合模方向正交之方向上延伸且 互連第二分配部51之下游端與各模穴31之三個進模口 32。 亦製造彼此具有相同形狀之兩個模穴側流道3 3、3 3或以便 熔融金屬流入一模六3 1之流動條件與流入另一模穴之流動 條件相同。 接者，將參考圖1至5描述使用如上所述般構造之壓鑄用 模具1的鑄造製程。 首先在展示於圖1宁之模具開啟狀態中，壓模閉合裝置 驅動可移動模具6至同一圖之左側。當可移動模具6開始移 動時其接觸中間模具4。此時，模具閉合裝置進一步克服 施加回彈力至中間模具4之壓縮盤簧之回彈力將圖丨中之可 移動模具6自該等兩個模具之相互接觸狀態推動至左側以 移動可移動模具6與_間模具4至圖〗之左側。在中間模具4 以規定模具緊固力緊固至基礎模具3之狀態下及在可移動 模具6以規定模具緊固力緊固至中間模具4之狀態下中間模 具4與基礎模具3接觸之後，模具閉合裝置停止驅動可移動 128366-10009l5.doc -18- 1352635 模具^ 在如上所述完成模具閉合之後’如圖2中所示注入炫融 金屬Μ。如圖3令所示，在熔融金屬固之後，用模具閉 合裝置移動可移動模具6至圖之右側。當以此方式驅動可 移動模具6時，因為可移動模具6及中間模具4與經凝固金 屬Μ接合在一起，所以模具4與6 一起移動且中間模具4與 基礎模具3藉由壓縮盤簧之回彈力與模具閉合裝置之驅動 力分離。在此步驟中，模具閉合裝置致使中間模具4停止 在臨時停止位置處。由於模具4與6如上所述般移動，故以 所凝固金屬Μ在澆口 15中所形成之澆口内鑄件38及以所凝 固金屬Μ在流道9之第一分配部1〇中所形成之鑄件％與基 礎模具3分離。 如圖4中所示，用短柱切割機25切除第一分配部中之鑄 件39。此時切割位置為以所凝固金屬形成之第二分配部 51(前後方向延伸部51a)中之鑄件4〇與第一分配部中之鑄件 39之間的邊界。當切割邊界時，第一分配部中之鑄件”以 及澆口内鑄件3 8與中間模具4分離。 此後如圖5中所示，用模具閉合裝置將可移動模具6進一 步移至圖之右側。此時，中間模具4在其運動受連桿7限制 之後不能以與可移動模具6相同之方向移動。因此，當可 移動模具6相對於中間模具4以持續狀態移動至圖之右側 時’中間模具4與可移動模具6相距變遠β此後滑動插入 物27經縮回以自第二插入物％分離出由以下組成之鑄件 54 :第二分配部中之矯件4〇、在模穴31中以所凝固金屬形 128366-1000915.doc •19- 1352635 成之產品部分及在滿溢出口 34及排氣通道35中以凝固金屬 形成之產品周邊部分。隨後藉由自鑄件54中移除在流道 9、滿溢出口 34及排氣通道35中以所凝固金屬Μ形成之不 必要部分’同時保留產品部分而獲得曲柄轴箱。 對於如上所述般構成之壓鑄用模具1，有可能當熔融金 屬自第一分配部10流入第二分配部5丨時使經由流道9之第 一分配部10分配於各模穴3丨中之熔融金屬以同一方向（開 啟及閉合t間模具4及可移動模具6之方向）流動。因此， 有可能在兩個模穴3 1、3 1之間均衡熔融金屬自第二分配部 51之前後方向延伸部51a中經由模穴側流道33流入模穴31 之條件。 因此’對於以上壓鑄用模具1 ’當炼融金屬自流道9以均 勻分配狀態流入各模穴31中時，炫融金屬均勻填充各模穴 3 1。結果，此實施例使以單一鑄造法鑄造兩個具有高及一 致品質之曲柄軸箱成為可能。 根據此實施例之流道9之第二分配部5丨於前後方向延伸 部5la與模穴31之間具備在與模具開啟方向正交之方向上 延伸的模穴側流道33 ^因此，當熔融金屬自前後方向延伸 部513流入模穴側流道33中時，熔融金屬流向改變成與開 模及合模方向正交之方向，以便熔融金屬在相同流動條件 下流入各模穴中。因此，此實施例使將熔融金屬以導致產 印質改良之最佳方向注入模穴3丨中以便進一步提高產品 品質成為可能。 亦根據此實施例’當中間模具4與基礎模具3在鑄造之後 128366-1000915.doc -20- 1352635 +時I露出在淹口 15中以所凝固金屬形成之淹口内轉 及在机道9之第一分配部1〇中以所凝固金屬形成之禱 件39。當該等鑄件38及39經形成以自令間模具4之外端面 4b突出時，其易於移除。 因此對於此實施例，當洗口内禱件38及第一分配部 中之轉件39易於移除時，有可能製造儘管複雜形狀之流道 9在三維空間上延伸’亦促進包括移除不必要部分之步驟 之鑄造製程的壓鑄用模具。 此外對於此實施例，因為流道9之各模穴31之分支部” 於上游部52之中心線C兩側以線對稱形式形成，所以有可 月&將熔融金屬更精確地分布至各模穴31中以便一模穴之流 動條件（熔融金屬之流向、流速及流率）與另一模穴之流動 條件一致。因此，此實施例使兩個以單一鑄造法所製造之 曲柄軸箱之間的品質差異最小化成為可能。 根據此實施例之流道9之第二分配部5丨使用以下構造： 其中將熔融金屬自一前後方向延伸部5ia引導至以三個方 向刀支之模穴側流道3 3。然而，可適當改變一模穴3 1之前 後方向延伸部5 1 a的數目及經分支模穴側流道33之數目。 舉例而言’有可能使用以下構造：其中將兩個前後方向延 伸部51a用於一模穴31且將兩個前後方向延伸部51a、51a 與模穴3 1經由獨立模穴側流道33、33連接。在該種情況 下，有可能形成兩個模穴側流道33、33，除其中兩者皆於 其下游側分支成複數個之形狀外’在形狀上其中一模穴側 流道3 3於其下游側分支成複數個而另一模穴側流道3 3並不 128366-1000915.doc -21 - 1352635 分支或兩者皆不分支。 (第二實施例） 可如圖10及11中所示形成流道。 圖10為流道之另一實施例之正視圖。圖11為具有圖10中 之流道之模具的構造的剖視圖。在該等圖中，與參考圖J 至9所說明之彼等組件相同或相似之組件在不提供進一步 說明之情況下具備相同參考數字。此實施例為一鑄造氣冷 式引擎之汽缸體的實例。 圖10描述藉由以在不中途切斷鑄件之情況下自模具取出 之方式在自繞口 15至模穴31之整個範圍上凝固炫融金屬所 形成的單一鑄件。因為在模具丨中所形成之流道9及模穴31 之形狀對應於此鑄件之形狀，所以此禱件具備欲隨後描述 之流道9之各部位的參考數字以及模穴之參考數字31。 兩個展示於圖10中之模穴31係用於鑄造引擎之汽缸體。 如圖11中所示’該等模穴31由中間模具4及可移動模具6組 成，其中四個滑動插入物27包圍兩個模具之間的間隙。中 間模具4形成汽缸體之汽缸蓋側端。可移動模具6具有用於 形成八缸體之汽紅内徑的孔銷（b〇re⑽…且形成汽虹體之 曲柄轴箱側端》 四個滑動插人物27形m體之周壁部分。孔銷61具有 圓升/刖端呈紡錘狀之圓柱形狀且連接至可移動模具6，以 便當閉合模具時前端位於中間模具4之前後方向延伸部仏 中於孔銷61與前後方向延伸部5ia之間形成進模口 ”。 進模口 32具有如汽缸軸方向所見之環形形狀。 128366-1000915.doc -22- 1352635 換吕之’形成展示於圖11中之模具1以便經由進模口 32 注入炫融金屬使得在汽缸體之端部於汽缸蓋側開啟。 兩個展示於圖10中之模穴31、31於流道9之上游部52之 t心線C兩侧以線對稱形式形成。 展示於圖10中之流道9由以下組成：針對各模穴31所提 供之第一分配部1〇，其由上游部52及分支部53組成；及針 對各模穴31所提供之第二分配部51，其用於連接模穴31與 第一分配部10之下游側端部丨〇a。根據此實施例之第二分 配部5 1僅以針對各模穴3丨所提供之前後方向延伸部$ 1&構 成’前後方向延伸部51a平行於中間模具4及可移動模具6 之開模及合模方向自下游側端部l〇a之每一者延伸。如圖 11中所示’前後方向延伸部51a之下游端經由進模口 32與 模穴31連接。換言之，儘管第一實施例使用其中將熔融金 屬自第二分配部5 1之前後方向延伸部5丨&經由模穴側流道 33引入進模口 32中的構造，但此實施例使用其中不提供模 穴側流道3 3且熔融金屬自前後方向延伸部5丨a之下游端直 接流入進模口 32中的構造。 製造如此實施例中所示之流道9亦提供與使用第一實施 例相同之效應。 提供兩個如此實施例中所示相對於中心線c呈線對稱形 式之模穴31、31之原因在於將提供於一模穴31四周之四個 滑動插入物27中具有最短運動行程之滑動插入物27定位成 接近另一模穴31。換言之，原因為使用其中當並排提供兩 個模穴3 1時最短行程之滑動插入物27並排到達的構造導致 128366-1000915.doc •23- 兩個模穴31之間距離較短’從而使得可能縮小模具】之尺 寸。 【圖式簡單說明】 圖1為本發明之壓鑄用模具在閉合模具之前的剖視圖。 圖2為本發明之塵鑄用模具當進行鑄造時之剖視圖。 圖3為其中本發明之㈣用模具之中間模具及可移動模 具與基礎模具在鑄造製程之後分離的剖視圖。 圖4為其中根據本發明切除澆口内鑄件及第一分配部中 之鑄件之狀態的剖視圖。 圖5為其中可移動模具與壓鑄用中間模具分離同時保留 中間模具在展示於圖种之臨時停止位置處的剖視圖。 圖6為其中形成可移動模具之模穴之插入及主要模具的 實例的正視圖。 圖7為熔融金屬流經的本發明之壓鑄用模具之部分構造 的正視圖。 圖8為熔融金屬流經的本發明之壓鑄用模具之部分構造 的斜視圖。 圖9為田熔融金屬凝固於流道及模穴中時所形成之鑄件 形狀的側視圖。 圖10為在另一實施例中之流道之正視圖。 圖為”有圖1 〇中所展示之流道之模具的構造的剖視 圖。 圖12為具有兩個成型模穴之習知壓禱用模具的剖視圖。 【主要元件符號說明】 128366-1000915.doc •24· 1352635 1 壓鑄用模具 2 機器底座 3 基礎模具 3 a 切割機裝載凹座 4 中間模具 4a 内端 4b 外端面 5 固定模具 6 可移動模具 7 連桿 8 柱塞套筒 9 流道 10 第一分配部 10a 下游側端部 11 流道用插入物 12 柱塞頭 13 柱塞桿 14 柱塞 15 澆口 16 凹槽 21 第一主要模具 22 第一插入物 23 注道襯套 23a 錐形孔 128366-1000915.doc -25- 1352635 24 定位銷 25 短柱切割機 25a 刀片 26 第二插入物 26a 陽模 27 滑動插入物 31 模穴 32 進模口 33 模穴側流道 34 滿溢出口 35 排氣通道 36 冷卻排氣口 37 定位孔 38 澆口内鑄件 39 第一分配部中之鑄件 40 第二分配部中之鑄件 41 第二主要模具 42 滑動模具 43 汽缸 51 第二分配部 51a 前後方向延伸部 51b 模穴側澆口 52 上游部 53 分支部 128366-1000915.doc -26- 1352635 54 鑄件 61 孔銷 101 模具 102 第一模穴 103 第二模穴 104 流道 105 流道 106 澆口 107 進模口 Μ 熔融金屬 128366-1000915.doc -271352635 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a die for die casting having a plurality of molds formed in a set of molds. Eight Prior Art Conventional presses, which are common in applications, as disclosed in, for example, Patent Document 1, have a single cavity for a set of fixed molds and movable molds. To increase productivity using such die casting machines, it is envisioned to provide a plurality of cavities in a set of molds as shown in FIG. Figure 12 is a cross-sectional view of a conventional die-casting mold having two molding cavities. The mold 101, the first and second cavities 102 and 103, the runners 104 and 105 and the gate 106 formed for each cavity are shown. The first and second cavities 102 and 103 are naturally formed in the same shape with each other so that the shapes of the products (binding members) coincide with each other. The cavities 102 and 103 are formed at one of the sides 101 and the other side of the mold 101 centered on the gate 106 at equal distances. The cavities 102 and 103 are connected to the downstream end portions of the flow paths 104 and 105 via the die ports 107 provided at the three positions, respectively. The position of the die opening 107 in a cavity 102 is the same as that in the other cavity 103. Two flow paths 104 and 105 are formed to distribute the molten metal self-washing port 106 to the three inlet ports 107. The runners 1〇4 and 105 are formed to extend from the gate 106 to one side and the other side of the mold 101 to connect the gate 106 and the die port 107 via the shortest distance. [Patent Document 1] Japanese Patent Publication No. Hei 7-73783, No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. Two products were cast at the same quality and the productivity did not increase to the extent expected. Since the test and the error of the two castings being unequal or not equal in quality, the inventors have found that filling the cavity with molten metal is not balanced between the first cavity 102 and the second cavity 1 () 3 Thoughts. In other words, the glazed metal is injected into the first cavity 1〇2 from the right side of the pattern and injected into the second cavity 103 from the left side. As a result, it is impossible to equalize the flow conditions in which the molten metal flows into the two cavities 102 and 103 between the two cavities 1〇2 and 1〇3. The flow conditions are the flow direction of the molten metal, the flow rate, the flow rate, and the like. The present invention has solved the above problems. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a die for die casting which makes it possible to uniformly distribute molten metal into a plurality of cavities under equal flow conditions and to cast a plurality of castings having high and consistent qualities by a single casting method. [Means for Solving the Problems] In order to achieve the above object, the present invention relates to a mold for die-casting, and has a plurality of mold cavities formed in a set of fixed molds and movable molds capable of opening and closing molds. Simultaneously casting a plurality of products having the same shape; and/or melons, which are provided in a fixed mold to introduce molten metal into the respective cavities via a gate connected to the plunger, wherein the flow path has a first distribution portion The gate side extends orthogonally to the mold opening and clamping direction to a position corresponding to each mold cavity 128366-1000915.doc 1352635; and a second distribution portion having a downstream side end from the first distribution portion of each cavity A front-rear direction extension extending parallel to the mold opening and the mold clamping direction. The invention of claim 2 relates to a die for die casting as claimed in claim 2, wherein each of the second distribution portions further has a cavity side wash port formed from the downstream end of the front and rear direction extension portion 1 for each cavity. Extending to the cavity side flow passages of the respective cavities, the cavity side flow passages respectively extend from the cavity side gates in a direction orthogonal to the mold opening and the mold clamping direction, and the cavity side flow passages are in the shape The upper part is shaped so that the molten metal flows into the cavity under the same flow conditions. The invention of claim 3 relates to a die for die casting as claimed in claim 1, wherein the fixed mold is provided by a base mold having a flooding σ connected to the plunger and placed between the base mold and the movable mold to open the mold and Forming an intermediate mold that moves to the base mold and moves away from the base mold, the mold holes are formed between the inter-mold mold and the movable mold, and the first distribution portion is formed in the base mold and the intermediate mold Between the second distribution portion and the front and rear direction extension portions are formed to penetrate the intermediate mold. The invention of claim 4 relates to the die for die casting according to claim 2, wherein the fixed mold is provided by a base mold having a gate connected to the plunger and placed between the base mold and the movable mold to open the mold and Forming an intermediate mold that moves to the base mold and moves away from the base mold, the mold holes are formed between the inter-mold mold and the movable mold, and the first distribution portion is formed in the base mold and the intermediate mold Between the second distribution portion, the front and rear direction extension portions are formed to penetrate the intermediate mold, and the cavity side flow passage is formed between the intermediate mold and the movable mold. The invention of claim 5 is directed to a mold of 128366-1000915.doc -9- 1352635 for casting according to any one of claims 1-4, wherein the first distribution portion of the flow path is poured from the side located on the plunger side The upstream portion of the mouth connection and a plurality of branch portions extending from the upstream portion to the respective cavity portions are formed, and the branch portions are formed in line symmetry on both sides of the center line of the upstream portion. [Effects of the Invention] According to the present invention, molten metal that has flowed from the plunger into the flow path through the gate is discharged to each of the cavities via the first distribution portion. When the flow of the molten metal flows from the first distribution portion into the front direction extension portion of the second distribution portion, the direction of the molten metal flow distributed in each of the cavities is aligned with the mold opening and the mold clamping direction. Thus, for all of the cavities, molten metal flows from the second distribution portion into the cavities under the same flow conditions. Therefore, according to the present invention, when the molten metal flows into the respective cavities from the second distribution portion of the flow path in a uniformly distributed state, the filling is performed in an equilibrium state for the plurality of cavities. As a result, the present invention may provide a die-casting mold which enables casting of a plurality of high and consistent quality products by a single casting method. According to the second invention, when the molten metal flows into the cavity side flow passage from the front direction extension portion before the second distribution portion, the direction of the molten metal flow is changed to be orthogonal to the mold opening and closing direction, and the molten metal is under uniform flow conditions. Flow into each cavity. Therefore, it is possible to inject molten metal into a plurality of cavities in this direction to produce the highest quality casting and to provide a die casting mold which improves the quality of the casting. According to the invention as claimed in claims 3 and 4, when the intermediate mold and the movable mold are separated from the base mold after the casting process, the gate casting formed by solidifying the molten metal in the gate is exposed and by the flow path The first point is 128366-1000915.doc • 10 - 1352635 The casting in the first distribution portion formed by solidifying molten metal in the fitting. Since one of the castings is formed to protrude from the end face of the mold, it is easy to shift because of rt/V. The transfer of the wash and the recordings in the first dispensing portion makes it possible to remove the casting formed by solidifying the molten metal in the second portion of the flow path from the intermediate mold toward the cavity. (d) it is possible to remove the entire casting having the product part from the mold by opening the intermediate mold and moving the money/, so that 'according to the invention' it is possible to easily remove the washing and the flow path as described above In the first part, the inner part of the rinsing (four) molten metal formed by the molten metal and the tungsten part of the first distribution part. Therefore, it is possible to provide a die for die casting which allows a casting method including a step of removing unnecessary steps even if the flow path extends in a three-dimensional space to form a complicated shape. As in the invention of item 5, it is possible to melt the metal more precisely into the knurls for each cavity so that the flow conditions (flow direction, flow rate and flow rate of the molten metal) of the respective cavities are the same. Therefore, it is possible to minimize the difference in quality of a plurality of castings manufactured by a single casting method. [Embodiment] [Best Mode for Carrying Out the Invention] (First Embodiment) A mold for dust casting, which is an embodiment of the present invention, will be described below with reference to Figs. BRIEF DESCRIPTION OF THE DRAWINGS Figures 1 to 5 are cross-sectional views showing a die for a scale of a furnace for use in the present invention. Figure 1 shows the state of the mold before it is closed. Figure 2 screen Millennium _ d z show the state of the mold when casting. Fig. 3 shows the post-casting state (temporary stop ^ ^ ^ 11T state)' of its ten movable molds and the middle of the molds from the base mold-distribution part t to the movable part from the middle part. Move out. Figure 4 shows the state of the casting in the cut gate and the first state. Fig. 5 shows a state in which the mold is removed from the temporary stop position of Fig. 4 while leaving the intermediate mold = a front view of an example of a movable mold: a main mold and an insert having a mold. Fig. 7 is a front elevational view showing the configuration of a portion of a mold for compression according to the present invention, in which a molten metal flows. Figure 8 is a squint of the same part of the knife. ° Figure 9 is a side view of the shape of the piece formed when the molten metal solidifies in the 尧σ, the flow path and the cavity; the middle part of the product is in the form of a section. The embodiment is a die-casting mold for a crank alloy crankcase for casting a locomotive engine. The drawing S π is a mold for praying according to an embodiment of the present invention. The die 1 for die casting is a so-called high-speed high-pressure die and mounted on a machine base 2 of a press machine (not shown). . The die-casting mold ι consists of a fixed mold 5 composed of a base mold 3 located at the leftmost side in the drawing and an intermediate mold 4 adjacent to the former; and a movable mold 6 which is located at the rightmost side in the same figure. The base mold 3 of the fixed mold 5 is fixed to the machine base 2 and has four links 7 for defining the traveling direction and distance of the intermediate mold 4, which will be described later. The base mold 3 is also provided with a plunger sleeve 8 and a flow passage insert 11 for forming a first distribution portion 1 (see Figs. 7 and 8) of a flow path 9 to be described later, which can freely move the plunger head 12 is assembled in the plunger sleeve 8. The plunger head 12 and the plunger rod 13 constitute a plunger 14 as used in the present invention. The runner insert 1 1 is formed by a gate 15 connected to the plunger sleeve 8 and a groove 16 128366-1000915.doc • 12-1352635 for forming a flow path. As shown in Fig. 1, the intermediate mold 4 is composed of a first main mold 21 and a first insert 22 assembled and fastened in the main mold 21 and is selected on the machine base 2 to be defined by the link 7. Free movement in direction. The link 7 is provided at a position corresponding to the four corners of the intermediate mold 4 to define the left-right direction of movement of the intermediate mold 4 (in Figs. 1 to 5). In this die-casting mold, the moving direction of the intermediate mold 4 is performed in the mold opening and mold clamping directions. The link 7 has a configuration defining a travel distance of the intermediate mold 4 from the base mold 3 so that the intermediate mold * does not move from the base mold 3 to a predetermined distance. The intermediate mold 4 is a portion of the fixed mold and is constantly biased in a direction away from the base mold 3 by a plurality of compression coil springs (not shown). In the state where no external force is applied, the intermediate mold 4 is held by the link 7 at a position having a predetermined distance from the base mold 3. The compression coil spring is held and elastically inserted between the base mold 3 and the intermediate mold 4 by a plurality of columns which are placed on the portion of the base mold 3 which is disposed in the vicinity of the link 7 in the form of the intermediate mold 4. The intermediate mold 4 is provided with a § main guide sleeve 23, a positioning pin 24, and a short column cutter 25. The first insert 22 cooperates with the second insert 26 and the sliding insert 27 of the movable mold 6 described later to form two cavities 31 (see Fig. 6). As shown in Fig. 1, the first insert 22 is assembled and fastened in the inner end 4a of the intermediate mold 4 located on the side opposite to the base mold 3. Incidentally, in FIG. 6, the surface provided with the male mold 26a protruding from the second insert 26 is indicated as the cavity 31 0. This is provided side by side in the first and first inserts 22 and 26 in the horizontal direction. The two cavities 31, 31 of the embodiment. Figure 6 depicts a view of the second insert 26 when viewed from the first insert 22 side j28366-1000915.doc -13· 1352635. The two cavities 31, 31 shown in Fig. 6 are formed in the same direction and in the same shape so that the products formed in the cavities 31 have the same shape. The molten metal is injected into the cavities 31, 31 via three inlet ports 32 which are open at the lower ends of the respective cavities 31. The position at which the inlet ports 32 are formed in a cavity 31 is also the same as that in the other cavity 31. The inlet port 32 is connected to the cavity side flow path 33 of the flow path 9 as will be described later, as shown in Fig. 6. As also shown in Fig. 6, the cavity 31 is connected to the overflow port 34 and the exhaust passage 35, respectively. The overflow ports 34 and the exhaust passages 35 are respectively formed in a groove shape in the second insert. The openings of the grooves are closed by a plane (not shown) of the first insert 22. The shape of the overflow port 34 and the exhaust passage 35 formed in a cavity 3 is also the same as that formed in the other die 36. The front end of the exhaust passage 35 has a cooling exhaust port 36 which is generally known. The cooling vent % is provided to the first mold 21 of the movable mold 6 and the second main mold is called to be described later. The middle mold 4 and the movable mold 6 are closely matched with each other when the intermediate mold 4 and the movable mold 6 are closely fitted to each other. A duct of a labyrinth structure is formed between the ports 36 and 36. The ducts are connected to the atmosphere via a small gap formed between the main dies 21 and 41. The sprue bushing 23 provided in the intermediate mold 4 has a tapered hole 2 therein so that the moving direction of the intermediate mold 4 passes through the first main mold: the shaft member 22. The tapered hole 23a is formed as shown in Fig. 1 so that the inner diameter of the basin gradually increases toward the movable mold 6. In particular, the locating pin 24 is used for the relative positioning between the intermediate mold 4 and the movable mold 128366-1000915.doc 1352635 VIII 6 to be described later and assembled in the locating hole recessed in the movable mold 6. The form in 37 (Figure 1) is provided. Although only one of the intermediate mold 4 and the lower half of the movable mold 6 and a positioning hole 37 are described in FIGS. 1 to 5, they are actually provided on the intermediate mold 4 and the movable mold 6. Half of it. In this embodiment, four locating pins 24 and four locating holes 37 are provided adjacent the four corners of the first insert 22 and the second insert 26. The short-column cutter 25 uses a configuration in which the blade 25& which is placed in contact with the outer surface of the intermediate mold 4 in contact with the outer surface of the intermediate mold 3 (Fig. 1} is moved in parallel in the vertical direction. As shown in Fig. 3, the short column The cutter 25 cuts out the casting from the intermediate mold 4. The casting is formed by the gate casting 38 formed when the molten metal solidifies in the gate μ and the first distribution portion 10 when the molten metal is solidified in the flow passage 9. The casting 39 in the first distribution portion formed in the groove 16) is composed. When the mold is closed, the short cylinder cutter 25 is inserted into the cutter loading recess 3a of the base mold 3. As shown in Fig. 1, it is movable The mold 6 is composed of a second main mold 41, a second insert 26 assembled and tightly fitted into the first main mold 41, and a sliding mold 42, and supported on the machine base 2 to move freely in parallel with the moving direction of the intermediate mold 4. The movable mold 6 is coupled to a mold closing device (not shown) that causes the movable mold 6 to open and close the mold. The direction of the movable mold 6 close to the intermediate mold 4 is the mold closing direction as used herein, and the movable mold 6 and intermediate mode The direction in which the separation is 4 is the mold opening direction. The mold closing device is constructed so that it is possible to move the movable mold 6 to the left side of the drawing to the left side of the drawing mold 5 to the left mold 4 and to make it in contact with the intermediate mold 4, and to overcome the application. The resilience of the compression coil spring of the intermediate mold 4 is 128366-1000915.doc -15- 1352635. The molds 4 and 6 are moved in an integral manner toward the base mold 3. The mold closing device also uses the movable mold after the casting process and 6 to the right side of the figure (1) and stopped at a state in which the intermediate mold 4 is separated from the base mold 3 by a predetermined distance (Fig. 3). The prescribed distance is the following interval which is generated: the outer surface 4b of the intermediate mold 4 is exposed. The washing mouth (4) (4) and the casting 39 in the first dispensing portion can be dropped through the interval, and the intermediate mold 4 is not restricted in movement by the connecting rod 7. When the intermediate mold 4 is separated from the base mold 3 by a predetermined distance and stopped, the intermediate mold 4 The position is referred to as a temporary stop position in the following description. The mold closing device is also configured to move the movable mold 6 from the stop position to the right side away from the intermediate mold 4. The outer shape of the second insert 26 shown in Fig. 6 is rectangular when viewed from the side of the intermediate mold 4. The second insert 26 is connected with the second main mold 41 in the horizontal direction with its longer side. The first insert 22 is identical to the second insert 26 and is connected in its horizontal direction to the first main mold 21 with its longer side. The second main mold is adjacent to the four corners of the second insert 26... The middle drilling hole positioning hole 37. The sliding mold 42 is provided for each cavity 31 and is composed of a sliding insert 27 facing from the inside toward the inside of the cavity ^ and a 4 3 for lifting and lowering the sliding insert opening. A flow path 9 for introducing molten metal into the cavity 31 is formed as shown in FIGS. 6 to 8. 7 and 8 illustrate the formation of a genus of condensed gold, 28366-l00Q9i5.doc 13526.35, over the entire range from the washing port 15 to the cavity 31 in a state of being taken out of the mold without being cut off in the middle. Single-scale pieces. Since the shape of the flow path 9 and the die 31 formed in the mold it corresponds to the shape of the casting, the casting has the reference numerals of the portions of the flow path 9 to be described later and the reference numeral 31 of the cavity. Incidentally, since FIG. 6 shows the general configuration of the movable mold 6, the shapes of the cavity 31, the cavity side flow path 33, the full overflow port μ, and the exhaust passage 35 shown in FIGS. 7 and 8 are different from those of the drawing. The one shown in 6. The flow path 9 is composed of the first distribution portion 1〇, 1〇 in a direction orthogonal to the mold opening and mold clamping directions of the intermediate mold 4 and the movable mold 6 (parallel to the illustrations of FIGS. 6 and 7). a surface) extending from the gate 15 to a position corresponding to each of the cavities η; and a second distribution portion 51 for each of the cavities 31 for interconnecting the first distribution portions 10, 1 for each of the molds 63 The downstream side end portion l〇a and the mold hole η are introduced into the die opening 32. The second distribution portion 51 is composed of a front-rear direction extending portion 51a' extending from the downstream side end 1 Oa of the first distribution portion 10 in a direction parallel to the mold opening and the mold clamping direction; and a cavity side flow passage 33, The cavity side gate 5丨b (Fig. 8) formed from the downstream end of the front and rear direction extending portion 51a extends to the cavity 31 (the branch port 32). The first dispensing portion 10 is formed in the form of a groove 16 in the flow channel insert 11 (Fig. 1) provided in the base mold 3. In this embodiment as shown in FIGS. 6 to 8, 'the first distribution portion 10 is extended from the washing port 15 by a single upstream portion 52 (shared by the two molds 31) and two from the upstream portion 52. It branches to the branch portions 53, 53 of the respective cavities 31. The branches 53 and 53 are formed on both sides of the Yin heart line C of the upstream portion 52 in line symmetry as shown in the circles 6 and 7. In this embodiment, as shown in FIGS. 6 and 7, the mold is opened and The w shape seen in the mold clamping direction forms the branch portions 53, 53. 128366-10009I5.doc • 17· 1352635 The second distribution portion 51 is formed with a tapered hole 23 a of the sprue bushing 23 on the front and rear direction extending portion 51 a and from the two first distribution portions as shown in FIG. 9 . The downstream end portion (front end portion) 1 〇 a of each of them extends parallel to the mold opening and the mold clamping direction (the lateral direction in Fig. 9). Two front and rear direction extending portions 51a, 51a are formed in the same shape as each other. The short column cutter 25 is configured such that the cut portion is connected to the first dispensing portion 10 before and after the direction extending portion 51&. The cavity side flow passage 33 of the second distributing portion 51 is formed in the second insert 26 in the form of a recess as shown in Figs. The cavity side flow path 33 as shown in FIGS. 6 and 7 is formed to extend in a direction orthogonal to the mold opening and closing direction and interconnect the downstream end of the second distribution portion 51 and each of the cavity 31 One die port 32. The two cavity side flow passages 3 3, 3 3 having the same shape as each other or the flow conditions in which the molten metal flows into the one mold 6 31 are also produced in the same flow condition as the flow into the other mold cavity. Next, a casting process using the die-casting mold 1 constructed as described above will be described with reference to Figs. First, in the open state of the mold shown in Fig. 1, the stamper closing device drives the movable mold 6 to the left side of the same figure. It contacts the intermediate mold 4 when the movable mold 6 starts moving. At this time, the mold closing device further overcomes the resilience of the compression coil spring applying the resilience to the intermediate mold 4, and pushes the movable mold 6 in the drawing from the mutual contact state of the two molds to the left side to move the movable mold 6 With _ between the mold 4 to the left side of the map. After the intermediate mold 4 is fastened to the base mold 3 with a prescribed mold fastening force and the intermediate mold 4 is brought into contact with the base mold 3 in a state where the movable mold 6 is fastened to the intermediate mold 4 with a prescribed mold fastening force, The mold closing device stops driving and can be moved 128366-10009l5.doc -18- 1352635 Mold ^ After the mold closing is completed as described above, the glazed metal crucible is injected as shown in FIG. As shown in Fig. 3, after the molten metal is solid, the movable mold 6 is moved to the right side of the drawing by the mold closing device. When the movable mold 6 is driven in this manner, since the movable mold 6 and the intermediate mold 4 are joined together with the solidified metal crucible, the molds 4 and 6 move together and the intermediate mold 4 and the base mold 3 are compressed by the coil spring. The resilience is separated from the driving force of the mold closing device. In this step, the mold closing device causes the intermediate mold 4 to stop at the temporary stop position. Since the molds 4 and 6 are moved as described above, the gate casting 38 formed by the solidified metal crucible in the gate 15 and the solidified metal crucible formed in the first distribution portion 1 of the flow path 9 are formed. The casting % is separated from the base mold 3. As shown in Fig. 4, the casting 39 in the first dispensing portion is cut by a short column cutter 25. The cutting position at this time is the boundary between the casting 4 中 in the second distributing portion 51 (the front-rear direction extending portion 51a) formed of the solidified metal and the casting 39 in the first distributing portion. When the boundary is cut, the casting in the first dispensing portion and the in-gate casting 38 are separated from the intermediate mold 4. Thereafter, as shown in Fig. 5, the movable mold 6 is further moved to the right side of the drawing by the mold closing device. At this time, the intermediate mold 4 cannot move in the same direction as the movable mold 6 after its movement is restricted by the link 7. Therefore, when the movable mold 6 is moved to the right side of the drawing with respect to the intermediate mold 4 in a continuous state, the intermediate mold 4 is spaced farther away from the movable mold 6 after which the sliding insert 27 is retracted to separate the casting 54 consisting of the following from the second insert %: the orbiting member 4 in the second dispensing portion, in the cavity 31 The product portion of the solidified metal shape 128366-1000915.doc • 19-1352635 and the peripheral portion of the product formed by solidification of the metal in the overflow port 34 and the exhaust passage 35. The flow is then removed from the casting 54 In the channel 9, the overflow port 34 and the exhaust passage 35, the unnecessary portion formed by the solidified metal crucible is obtained while retaining the product portion to obtain the crankcase. For the die-casting mold 1 configured as described above, it is possible to melt Gold When the first distribution unit 10 flows into the second distribution unit 5丨, the molten metal distributed in each of the mold holes 3 via the first distribution unit 10 of the flow path 9 is in the same direction (opening and closing the t-die 4 and The direction of the moving mold 6 flows. Therefore, it is possible to equalize the flow of molten metal between the two cavities 31, 31 from the second distribution portion 51 before and after flowing into the cavity through the cavity side flow passage 33 from the rear direction extending portion 51a. The condition of 31. Therefore, when the molten metal is flowed into each of the cavities 31 in a uniform distribution state from the above-described die-casting mold 1', the molten metal uniformly fills the respective cavities 31. As a result, this embodiment enables It is possible to cast two crankcases with high and consistent quality by a single casting method. The second distribution portion 5 of the flow passage 9 according to this embodiment is provided between the front and rear direction extending portions 51a and the cavity 31 to be opened with the mold. The cavity side flow path 33 extending in the direction orthogonal to the direction. Therefore, when the molten metal flows into the cavity side flow path 33 from the front and rear direction extending portion 513, the flow direction of the molten metal is changed to be orthogonal to the mold opening and closing direction. Direction so that the molten metal is the same It flows into the cavities under dynamic conditions. Therefore, this embodiment makes it possible to inject molten metal into the cavity 3 in an optimum direction to cause the improvement of the print quality to further improve the product quality. Also according to this embodiment The mold 4 and the base mold 3 are exposed after the casting, 128366-1000915.doc -20 - 1352635 + I, and the inside of the flooding port 15 is formed by the solidification of the solidified metal and is in the first distribution portion 1 of the tunnel 9 The solidified metal is formed into a prayer piece 39. When the castings 38 and 39 are formed to protrude from the outer end face 4b of the inter-mold die 4, it is easy to remove. Therefore, for this embodiment, when the wash-in-the-mouth prayer piece 38 and the When the transfer member 39 in a dispensing portion is easily removed, it is possible to manufacture a die-casting mold which allows the flow path 9 of a complicated shape to extend in a three-dimensional space to promote a casting process including a step of removing unnecessary portions. Further, with this embodiment, since the branch portions of the respective cavities 31 of the flow path 9 are formed in line symmetry on both sides of the center line C of the upstream portion 52, there is a possibility that the molten metal is more accurately distributed to each The flow conditions of the cavity 31 (flow direction, flow rate and flow rate of the molten metal) in the cavity 31 coincide with the flow conditions of the other cavity. Therefore, this embodiment enables two crankcases manufactured by a single casting method. The minimization of the difference in quality between the two is possible. The second distribution portion 5 of the flow path 9 according to this embodiment uses the following configuration: wherein the molten metal is guided from a front-rear direction extension 5ia to a mold in three directions The side flow passage 33. However, the number of the front and rear direction extensions 51a and the number of the branch cavity side flow passages 33 can be appropriately changed. For example, it is possible to use the following configuration: The two front and rear direction extending portions 51a are used for one cavity 31 and the two front and rear direction extending portions 51a, 51a are connected to the cavity 31 through the independent cavity side flow paths 33, 33. In this case, it is possible Forming two cavity side flow passages 33, 33, Both of them are branched into a plurality of shapes on the downstream side thereof. In the shape, one of the cavity side flow passages 3 3 branches into a plurality of downstream sides and the other cavity side flow passages 3 3 are not 128366- 1000915.doc -21 - 1352635 Branch or neither are branched. (Second Embodiment) A flow path can be formed as shown in Figures 10 and 11. Figure 10 is a front view of another embodiment of the flow path. Is a cross-sectional view of the construction of the mold having the flow path of Figure 10. In the figures, the same or similar components as those described with reference to Figures J to 9 have the same reference numerals without further explanation. This embodiment is an example of a cylinder block for casting an air-cooled engine. Figure 10 depicts the entire range from the winding 15 to the cavity 31 by taking it out of the mold without cutting the casting midway. A single casting formed by solidifying molten metal. Since the shape of the flow path 9 and the cavity 31 formed in the mold cymbal corresponds to the shape of the casting, the prayer piece has various portions of the flow path 9 to be described later. Reference numerals and reference numbers for the cavities 31. The cavity 31 shown in Fig. 10 is used for the cylinder block of the casting engine. As shown in Fig. 11, the cavity 31 is composed of an intermediate die 4 and a movable die 6, wherein four sliding inserts 27 surround the two. a gap between the molds. The intermediate mold 4 forms a cylinder head side end of the cylinder block. The movable mold 6 has a hole pin (b〇re (10) ... for forming a vapor red inner diameter of the eight cylinder body and forms a crank of a steam rainbow body Axle box side end" Four sliding inserts are formed in the peripheral wall portion of the 27-shaped m body. The hole pin 61 has a cylindrical shape with a rounded/twisted end in a spindle shape and is connected to the movable mold 6 so that the front end is located in the intermediate mold when the mold is closed 4 before and after the direction extending portion 仏, an entrance port is formed between the hole pin 61 and the front-rear direction extending portion 5ia. The die opening 32 has an annular shape as seen in the direction of the cylinder axis. 128366-1000915.doc -22- 1352635 The mold 1 formed in Fig. 11 is formed to inject molten metal through the die opening 32 so as to open at the end of the cylinder block on the cylinder head side. The two cavities 31, 31 shown in Fig. 10 are formed in line symmetry on both sides of the t-heart line C of the upstream portion 52 of the flow path 9. The flow path 9 shown in Fig. 10 is composed of a first distribution portion 1 provided for each cavity 31, which is composed of an upstream portion 52 and a branch portion 53; and a second portion provided for each cavity 31 A distribution portion 51 for connecting the cavity 31 and the downstream end portion 丨〇a of the first distribution portion 10. According to this embodiment, the second distribution portion 51 is configured to open the mold of the intermediate mold 4 and the movable mold 6 only in the front and rear direction extensions 1 1 and 1 for the front and rear direction extensions 51a. The mold clamping direction extends from each of the downstream side end portions 10a. The downstream end of the front-rear direction extending portion 51a as shown in Fig. 11 is connected to the cavity 31 via the die opening 32. In other words, although the first embodiment uses a configuration in which molten metal is introduced into the die 32 from the front and rear direction extensions 5 of the second distribution portion 5 1 via the cavity side flow passage 33, this embodiment uses The cavity side flow passage 3 is not provided and the molten metal flows directly from the downstream end of the front-rear direction extension 5丨a into the die opening 32. The manufacture of the flow path 9 shown in this embodiment also provides the same effect as the use of the first embodiment. The reason for providing two cavities 31, 31 in a line symmetrical form with respect to the centerline c as shown in this embodiment is that the sliding insertion of the four sliding inserts 27 provided around a cavity 31 with the shortest motion stroke is provided. The object 27 is positioned close to the other cavity 31. In other words, the reason is that the configuration in which the shortest stroke sliding insert 27 arrives side by side when the two cavities 31 are provided side by side results in a short distance between 128366-1000915.doc • 23- the two cavities 31, thereby making it possible Reduce the size of the mold. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view of a mold for die casting of the present invention before a mold is closed. Fig. 2 is a cross-sectional view showing the mold for dust casting of the present invention when it is cast. Fig. 3 is a cross-sectional view showing the intermediate mold of the mold for (4) of the present invention and the movable mold and the base mold separated after the casting process. Fig. 4 is a cross-sectional view showing a state in which the casting in the gate and the casting in the first dispensing portion are cut in accordance with the present invention. Fig. 5 is a cross-sectional view showing the movable mold separated from the intermediate mold for die casting while leaving the intermediate mold at a temporary stop position shown in the drawing. Fig. 6 is a front elevational view showing an example of insertion of a cavity in which a movable mold is formed and a main mold. Fig. 7 is a front elevational view showing a part of the construction of the mold for die casting of the present invention through which molten metal flows. Fig. 8 is a perspective view showing a part of the structure of the mold for die casting of the present invention through which molten metal flows. Fig. 9 is a side view showing the shape of a casting formed when the field molten metal is solidified in the flow path and the cavity. Figure 10 is a front elevational view of a flow channel in another embodiment. The figure is a cross-sectional view showing the structure of the mold having the flow path shown in Fig. 1. Fig. 12 is a cross-sectional view showing a conventional mold for praying having two molding cavities. [Description of main components] 128366-1000915.doc •24· 1352635 1 Die for die casting 2 Machine base 3 Base mold 3 a Cutting machine loading recess 4 Intermediate mold 4a Inner end 4b Outer end face 5 Fixed mold 6 Movable mold 7 Connecting rod 8 Piston sleeve 9 Flow path 10 A dispensing portion 10a downstream side end portion 11 flow channel insert 12 plunger head 13 plunger rod 14 plunger 15 gate 16 groove 21 first main mold 22 first insert 23 sprue bushing 23a tapered hole 128366-1000915.doc -25- 1352635 24 Locating Pin 25 Short Column Cutter 25a Blade 26 Second Insert 26a Male Mold 27 Sliding Insert 31 Mold Hole 32 Inlet Port 33 Cavity Side Flow Channel 34 Overflow Port 35 Row Air passage 36 Cooling vent 37 Positioning hole 38 In-gate casting 39 Casting in first distribution 40 Casting in second distribution 41 Second main mold 42 Sliding mold 43 Cylinder 51 Second distribution 51a Front and rear direction extension 51b Cavity side gate 52 Upstream portion 53 Branch portion 128366-1000915.doc -26- 1352635 54 Casting 61 Hole pin 101 Mold 102 First cavity 103 Second cavity 104 Flow path 105 Flow path 106 Gate 107 into the die Μ molten metal 128366-1000915.doc -27