200300004 玖、發明說明 【發明所屬之技術領域】 本發明，係關於使用在壓鑄或塑膠成形等之模具的冷 卻裝置，尤其是有關一種使冷卻水流過穿設在模具之冷卻 孔內來冷卻模具的鑄造用模具之冷卻裝置。 【先前技術】 爲獲得良好的鑄件，須將因模穴內之熔融液的熱而成 高溫之模具按鑄件之形狀適當地冷卻，對模具溫度經常適 當地控制，因此過去已提出各種模具溫度之控制方法。 其中，一般的方法係使冷卻水流過穿設在模具之多數 冷卻孔內來控制（冷卻)模具溫度。 在使冷卻水流過模具之冷卻孔內來冷卻模具以控制模 具溫度之情形，一般所使用之經常通水之方法係在鑄造過 程中不斷地使冷卻水流過穿設在模具之所有的冷卻孔內， 然而，在經常通水就會過冷的部位就使用間歇通水之方法 ，又，在因鑄件體積大給模具許多熱量而不能以間歇通水 充分冷卻的部位就使用筒壓間歇通水’以間歇地通入尚壓 冷卻水來打破產生於冷卻孔內周面之冷卻水蒸氣膜。 【發明內容】 然而，該等習知之模具冷卻方法，在依模具之冷卻部 位要改變冷卻模式或更換模具而要追加新冷卻系統之情形 ，須在鑄造機周圍設置複數台冷卻裝置。 200300004 本發明有鑒於該等習知之缺點而提供一種無論是在依 模具之冷卻部位要改變冷卻模式之情形，還是在更換模具 而要追加新冷卻系統之情形，在鑄造機周圍設置1台模具 冷卻裝置即可對應，並且以1個開關即可對每個模具之冷 卻部位容易地改變爲所希望之冷卻模式的鑄造用模具之冷 卻裝置。 要達成如上述目的之本發明的鑄造用模具之冷卻裝置 ，係使冷卻水流過穿設在模具之複數個冷卻孔內來冷卻模 具者；其特徵在於：在連接於供水源側之供水路徑並聯連 接送出高壓冷卻水（具有打破產生於模具冷卻孔內周面之蒸 氣膜的壓力）之高壓水用電磁閥、與送出低壓冷卻水之低壓 水用電磁閥，並且將該等高壓水用電磁閥與低壓水用電磁 閥之出口彼此連接而形成冷卻水供應路徑，藉由將該冷卻 水供應路徑之高壓水用電磁閥與低壓水用電磁閥分別獨立 控制，將冷卻水經由冷卻水供應路徑供應至模具冷卻孔內（ 申請專利範圍第1項）。 此時，較佳者爲：設置高壓水送出用泵，將高壓冷卻 水安定地供應至高壓水用電磁閥（申請專利範圍第2項）；將 空氣淸除路徑（用以將殘留於模具冷卻孔內部之冷卻水以空 氣淸除）設置於每個冷卻水供應路徑，並且使空氣淸除路徑 與冷卻水供應路徑合流（申請專利範圍第3項、第4項）；具 有複數組前述冷卻水供應路徑（申請專利範圍第5項）。 【實施方式】 200300004 以下，雖參閱圖式詳細說明本發明之具體合適之實施 例，但本發明並不限定於圖式實施例，可有各種形態。 又，對全部圖面中相同構件使用相同符號，省略重複 之說明。 本發明之模具冷卻裝置A，基本上係以一對高壓水用 電磁閥1a、1b、1c、1d與低壓水用電磁閥2a、2b、2c、2d 構成獨立之複數組冷卻水供應路徑3a、3b、3c、3d，在每 組冷卻水供應路徑3a、3b、3c、3d又分別設置空氣淸除路 徑 4a 、 4b 、 4c 、 4d 〇 ^ 高壓水用電磁閥1a、1b、…，係用以送出具有能打破 冷卻水之蒸氣膜（產生於穿設在模具之冷卻孔之內周面）之壓 力的高壓冷卻水。即，當模穴內有熔融液之模具成高溫狀 態時（在鋁壓鑄之射出過程中會升至大約400~50Q°C左右）， 若使冷卻水流過穿設在模具之冷卻孔內部，接觸冷卻孔內 周面之冷卻水就急遽蒸發，在冷卻孔內周面形成蒸氣膜， 冷卻水被該蒸氣膜阻擋而不能直接接觸冷卻孔內周面而降 低冷卻效果，故將加壓至能打破該蒸氣膜而直接接觸冷卻 孔內周面的壓力（若使用工業用水作爲冷卻水時，係〇.7MPa 以上）之冷卻水稱爲高壓冷卻水。 又，通常工廠內之冷卻水（工業用水）之壓力係 0.1~Q.5MPa，在本發明稱爲低壓冷卻水，低壓冷卻水通過低 壓水用電磁閥2送至模具之冷卻孔。 然後，將成對之高壓水用電磁閥1a、1b、…與低壓水 用電磁閥2a、2b、…，並聯連接於與供水源側（冷卻水供應 200300004 口 5)相連之供水路徑6,並且將該等高壓水用電磁閥1a、 1b、…與低壓水用電磁閥2a、2b、…之出口彼此透過連通 管7a、7b、7c、7d連接，形成獨立之複數組冷卻水供應路 徑3a、3b、3c、3d，藉由將各冷卻水系統之高壓水用電磁 閥1a、1b、…與低壓水用電磁閥2a、2b、…分別獨立控制 ，使冷卻水通過各冷卻水供應路徑3a、3b、3c、3d供應至 模具之各冷卻孔內。又，在圖示實施例，形成4系統之冷 卻水供應路徑3a、3b、3c、3d。 對各冷卻水系統之高壓水用電磁閥1a、1b、…與低壓 水用電磁閥2a、2b、…及後述之空氣淸除用電磁閥11a、 11b、11c、11d分別獨立控制之方法中，例如有在冷卻裝置 A之順序迴路使用可程式控制器。 又，在供水路徑6設置冷卻水用過濾器8、止回閥9 ，在高壓水用電磁閥1a、1b、…與低壓水用電磁閥2a、2b 、…之進口側之間設置壓力調節閥1〇 ’用以將高壓冷卻水 之壓力減壓爲低壓冷卻水。 又，對應於各冷卻水供應路徑3a、3b、…分別設置空 氣淸除路徑4a、4b、4c、4d ’使設置於各空氣淸除路徑4a 、4b、…之空氣淸除用電磁閥11a、11b、…能分別獨立控 制。空氣淸除用電磁閥11a、11b、…，係用於當冷卻水繼 續送入模具之各冷卻孔內致使模具過冷時’將殘留於冷卻 孔內部之冷卻水以空氣淸除’使模具之冷卻停止’空氣淸 除用電磁閥11a、11b、…將高壓空氣經由空氣淸除路徑4a 、4b、…送至模具之冷卻孔內部。 200300004 此時，較佳者爲將冷卻水供應路徑3a、3b、…與空氣 淸除路徑4a、4b、…透過止回閥13a、13b、 13c、13d與 13’a、13’b、13’c、13’d在前端部分合流，使能以1個冷卻 系統（配管）12a、12b、12c、12d供應冷卻水與空氣至模具 冷卻孔之內部。此時所使用之止回閥13a、13b、…，13’a 、13’b、…，較佳者爲使用彈簧式止回閥，使比開啓壓力 低之壓力之冷卻水與空氣能保持於各冷卻水供應路徑3a、 3b、…與空氣淸除路徑4a、4b、…。如此，就能將冷卻水 與空氣迅速切換而簡便地交替壓送。 又，連接於供水源側（冷卻水供水口 5)之供水路徑6 的冷卻水之供水壓力（線路壓），比高壓冷卻水之目標壓力値 低時，較佳者爲在冷卻水供應口 5之前後設置輔助泵，或 如圖2所示之實施例，將高壓水送出用泵14連接於供水路 徑6之高壓水用電磁閥1a、1b、…側。若設置高壓水送出 用泵14,就能將高壓之冷卻水安定地供應至高壓水用電磁 閥 1 a、1 b、…。 此時所使用之高壓水送出用泵14，可使用平常使用之 泵，但在圖示實施例，係使用以高壓空氣動作之壓缸式泵 。該壓缸式泵，係在2個同軸狀壓缸室14a內設置以1支 活塞桿14b連結之活塞14c，將一壓缸室14a之缸頭側作爲 用以貯存冷卻水之冷卻水貯存室14d，將另一壓缸室內當作 空氣室，藉由供應至空氣室之高壓空氣之作用能將冷卻水 貯存室14d內之冷卻水以高送出壓力送出，即使不設置冷 卻裝置亦能使冷卻水冷卻。在該高壓水送出用泵14之情形 200300004 ’高壓冷卻水之送出動作，係每逢鑄造機1之射出動作時 就進行。 又，圖中符號15，係電磁閥，用以使高壓水送出用泵 14動作，符號16，係空氣壓力調節器，連接於空氣供應源 ，用以將高壓空氣供應至高壓水送出用泵14。 其次，說明圖1所示之第1實施例之模具冷卻裝置A 之動作。在冷卻裝置A之順序回路使用可程式控制器等， 預先將各冷卻水系統之冷卻水供應路徑3a、3b、…之高壓 水用電磁閥1a、1b、…及低壓水用電磁閥2a、2b、…，及 空氣淸除用電磁閥11a、11b、…之動作設定成，對應待冷 卻模具之形狀等之冷卻模式。 配合鑄造機之射出動作之時機將開始訊號輸入冷卻裝 置A，既定壓力之冷卻水就從供水源側(冷卻水供水口 5)通 過供水路徑6流進冷卻裝置A之內部，同時，各冷卻水供 應路徑3a、3b、…之高壓水用電磁閥1a、1b、…與低壓水 用電磁閥2a、2b、…及空氣淸除用電磁閥11a、11b、…， 就依據所規劃之設定開始動作。於是，高壓冷卻水（具有打 破產生於模具冷卻孔內周面之蒸氣膜的壓力）就從高壓水用 電磁閥1a、1b、…，通過冷卻水供應路徑3a、3b、…流進 模具之冷卻孔內部。於是，高壓冷卻水直接接觸冷卻孔內 周面而不被產生於冷卻孔內周面之蒸氣膜所阻礙’使模具 急速冷卻。又，低壓冷卻水（以壓力調節閥10調節爲既定 之低壓）就從低壓水用電磁閥2a、2b、…，通過冷卻水供應 路徑3a、3b、…流進模具之冷卻孔內部，使模具較緩慢冷 200300004 卻。 另方面，若將低壓冷卻水繼續送出就可能使模具過冷 ，故在低壓冷卻水停止送出後，將高壓空氣從空氣淸除用 電磁閥11a、11b、…通過空氣淸除路徑4a、4b、…送至冷 卻孔內，以空氣淸除冷卻孔內之冷卻水來停止冷卻水之冷 卻作用。 連接於供水源側（冷卻水供水口 5)之供水路徑6之冷 卻水之供水壓力（線路壓），若比高壓冷卻水之目標壓力値低 時，就如圖2所示之第2實施例的模具冷卻裝置A，要裝 擎 上高壓水送出用泵14及附屬於此之電磁閥15等。 在此第2實施例之情形，當有輸入開始訊號而使用高 壓冷卻水之冷卻系統，高壓水送出用泵之電磁閥15就打開 ，以空氣壓力調節器16調節壓力之空氣供應至高壓水送出 用泵14。於是，高壓水送出用泵14之活塞14c就動作，進 行高壓冷卻水之送出動作，貯存於冷卻水貯存室14d之冷 卻水則從高壓水用電磁閥1a、1b、…通過冷卻水供應路徑 3a、3b、…流至模具之冷卻孔內部。並且，當不需要高壓 ♦ 冷卻水之送出時，電磁閥15就關閉，高壓水送出用泵14 之活塞14c回至原位置，將冷卻水從供水路徑6供應至冷 卻水貯存室14d內。 依據這樣動作之本模具冷卻裝置，藉由在各冷卻系統 12a、12b、…分別對冷卻水供應路徑3a、3b、…之高壓水 用電磁閥1a、1b、…與低壓水用電磁閥2a、2b、…及空氣 淸除路徑4a、4b、…之空氣淸除用電磁閥11a、11b、…進 11 200300004 行控制，如圖3所例示之冷卻模式（1)〜(4) ’能將穿設於模 具之多數冷卻孔的所希望處以所希望之冷卻模式加以冷卻 〇 冷卻模式（1)，係例如在因模穴內熔融液之熱使模具之 溫度急遽升高之情形，藉由配合模具溫度升高之時機輸入 冷卻開始訊號，將冷卻水供應路徑3a、3b、…之高壓水用 電磁閥1a、1b、…打開既定時間，使高壓冷卻水從冷卻水 供應路徑3a、3b、…通過冷卻系統（配管）12a、12b、…流至 模具之冷卻孔內部，使模具確實而迅速冷卻，接著爲要防 脅 止模具過冷，將高壓水用電磁閥1a、1b、…關閉後，將空 氣淸除用電磁閥11a、11b、…打開，使高壓空氣從空氣淸 除路徑4a、4b、…通過冷卻系統（配管）12a、12b、…流至模 具之冷卻孔內部，對殘留於冷卻孔內部之冷卻水實施空氣 淸除來停止冷卻水之冷卻作用。 冷卻模式（2)，係例如在因模穴內熔融液之熱使模具之 溫度急遽升高之情形，藉由配合溫度升高之時機輸入冷卻 開始訊號，將冷卻水供應路徑3a、3b、…之高壓水用電磁 # 閥1a、1b、…打開既定時間，使高壓冷卻水從冷卻水供應 路徑3a、3b、…通過冷卻系統（配管）1 2a、12b、…流至模具 之冷卻孔內部，使模具確實而迅速冷卻後，例如在取出製 品時新熱源消失時，將高壓水用電磁閥1a、1b、…關閉， 將低壓水用電磁閥2a、2b、…打開既定時間，使低壓冷卻 水流至模具之冷卻孔之內部，接著爲防止模具過冷，將低 壓水用電磁閥2a、2b、…關閉後，打開空氣淸除用電磁閥 12 200300004 lla、 11b、…，對殘留於冷卻孔內部之冷卻水實施空氣淸 除來停止冷卻水之冷卻作用。 冷卻模式（3)，係例如在模具之溫度並不高之情形，藉 由輸入冷卻開始訊號，將冷卻水供應路徑3a、3b、…之低 壓水用電磁閥2a、2b、…打開既定時間，使低壓冷卻水流 至模具之冷卻孔內’接著爲防止模具之過冷’將低壓水用 電磁閥2a、2b、…關閉後，打開空氣淸除用電磁閥11a、 llb、 …，對殘留於冷卻孔內部之冷卻水實施空氣淸除來停 止冷卻水之冷卻作用。 专 冷卻模式（4)，係輸入冷卻開始訊號’將冷卻水供應路 徑3a、3b、…之高壓水用電磁閥1a、1b、…打開既定時間 ，將高壓冷卻水從冷卻水供應路徑3a、3b、…通過冷卻系 統（配管）12a、12b、…流至模具之冷卻孔內部，使模具迅速 冷卻後，一旦將高壓水用電磁閥1 a、1 b、…關閉，將低壓 水用電磁閥2a、2b、…打開既定時間，使低壓冷卻水流至 冷卻孔之內部來冷卻模具後，再輸入冷卻開始訊號，高壓 水用電磁閥1a、1b、…打開既定時間，使高壓冷卻水流至 # 模具之冷卻孔內，接著將高壓水用電磁閥1a、1b、…關閉 ，將低壓水用電磁閥2a、2b、…打開既定時間，使低壓冷 卻水通水至冷卻孔之內部，重覆如上述之冷卻模式。 本發明之模具冷卻裝置因構成如上所述，故即使依模 具之冷卻部位要改變冷卻模式時，或更換模具而要追加新 冷卻系統時，在鑄造機周圍設置1台模具冷卻裝置即可對 應。 13 200300004 並且，藉由對高壓水用電磁閥、低壓水用電磁閥、空 氣淸除用電磁閥等以程式來控制，使穿設於模具之多數冷 卻孔之所希望處能以所希望之冷卻模式來冷卻，因此能以1 個開關即可選擇所希望之冷卻模式。 【圖式簡單說明】 (一）圖式部分 圖1，係本發明之第1實施例之迴路圖。 圖2，係本發明之第1實施例之迴路圖。 圖3,係使用本發明模具冷卻裝置之冷卻模式例的說 明圖。 (zl)元件代表符號 1a 1b 1c 1d 壓水用電磁閥 2a 2b 2c 2d 壓水用電磁閥 3a 3b 3c 3d 卻水供應路徑 4a 4b 4c 4d 氣淸除路徑 7 冷卻水供應口 8 供水路徑 7a 7b 7c 7d 連通管 8 冷卻水用過濾器 11 止回閥 12 壓力調節閥 11a 11b 11c 11d 空氣淸除用電磁閥 12a 12b 12c 12d 冷卻系統(配管） 14 200300004 13a 13b 13c 13d 止回閥 13，a 13’b 13’c 13’d 止回閥 14 高壓水送出用 泵 15 局壓水送出用 泵用電磁閥 16 空氣壓力調節 器200300004 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a cooling device for a mold used in die-casting or plastic molding, and more particularly to a method for cooling water by flowing cooling water through cooling holes provided in the mold. Cooling device for foundry mold. [Previous technology] In order to obtain good castings, molds that have become hot due to the melt in the cavity must be appropriately cooled according to the shape of the castings, and the mold temperature is often properly controlled. Therefore, various mold temperatures have been proposed in the past. Control Method. Among them, a common method is to control (cool) the temperature of the mold by passing cooling water through most of the cooling holes provided in the mold. In the case where cooling water is cooled through the cooling holes of the mold to control the temperature of the mold, the commonly used method of passing water is to continuously flow cooling water through all the cooling holes provided in the mold during the casting process. However, the intermittent water flow method is used in the part where the water flow is often too cold, and the cylinder pressure intermittent water flow is used in the part where the casting volume is too large to give the mold a lot of heat and cannot be cooled sufficiently with the intermittent water flow. The cooling water vapor film generated on the inner peripheral surface of the cooling hole is broken by intermittently passing the cooling water under pressure. [Summary of the Invention] However, in these conventional mold cooling methods, in the case where a cooling mode is changed or a mold is replaced with a new cooling system depending on the cooling position of the mold, a plurality of cooling devices must be provided around the casting machine. 200300004 In view of the shortcomings of the conventional methods, the present invention provides a mold cooling system around a casting machine, whether the cooling mode is changed according to the cooling part of the mold or a new cooling system is added when the mold is replaced. The device can cope, and the cooling part of each mold can be easily changed to a desired cooling mode of the casting mold cooling device with one switch. The cooling device for a casting mold according to the present invention, which achieves the above-mentioned object, is a method in which cooling water flows through a plurality of cooling holes provided in the mold to cool the mold. It is characterized in that: a water supply path connected to a water supply source side is connected in parallel Connect a high-pressure water solenoid valve that sends high-pressure cooling water (having a pressure to break the vapor film generated on the inner peripheral surface of the mold cooling hole) and a low-pressure water solenoid valve that sends low-pressure cooling water, and connect the high-pressure water solenoid valve It is connected with the outlet of the low-pressure water solenoid valve to form a cooling water supply path. By independently controlling the high-pressure water solenoid valve and the low-pressure water solenoid valve of the cooling water supply path, the cooling water is supplied through the cooling water supply path. Into the mold cooling hole (the first patent application scope). At this time, it is preferable that: a pump for sending high-pressure water is provided, and the high-pressure cooling water is stably supplied to the high-pressure water solenoid valve (item 2 in the scope of patent application); the air removal path (for cooling the remaining mold The cooling water inside the hole is removed by air) is installed in each cooling water supply path, and the air removal path is merged with the cooling water supply path (items 3 and 4 of the scope of patent application); Supply route (item 5 of the scope of patent application). [Embodiment] 200300004 Although the specific and suitable embodiments of the present invention are described in detail below with reference to the drawings, the present invention is not limited to the embodiments shown in the drawings, and may have various forms. In addition, the same reference numerals are used for the same members in all the drawings, and redundant descriptions are omitted. The mold cooling device A of the present invention basically consists of a pair of high-pressure water solenoid valves 1a, 1b, 1c, and 1d and low-pressure water solenoid valves 2a, 2b, 2c, and 2d to form an independent complex cooling water supply path 3a, 3b, 3c, 3d, and in each group of cooling water supply paths 3a, 3b, 3c, 3d are provided air purging paths 4a, 4b, 4c, 4d, respectively. ^ High pressure water solenoid valves 1a, 1b, ... are used to Send out high-pressure cooling water with a pressure that can break the vapor film of cooling water (generated on the inner peripheral surface of the cooling hole provided in the mold). That is, when the mold with the molten liquid in the cavity becomes a high temperature state (it will rise to about 400 ~ 50Q ° C during the injection of aluminum die-casting), if the cooling water flows through the cooling holes provided in the mold, it will contact The cooling water on the inner peripheral surface of the cooling hole evaporates rapidly, and a vapor film is formed on the inner peripheral surface of the cooling hole. The cooling water is blocked by the vapor film and cannot directly contact the inner peripheral surface of the cooling hole to reduce the cooling effect. This vapor film directly contacts the pressure of the inner peripheral surface of the cooling hole (if industrial water is used as the cooling water, the cooling water is 0.7 MPa or more) is called high-pressure cooling water. In addition, the pressure of the cooling water (industrial water) in the factory is usually 0.1 to Q. 5 MPa, which is referred to as low-pressure cooling water in the present invention. The low-pressure cooling water is sent to the cooling holes of the mold through the low-pressure water solenoid valve 2. Then, the pair of high-pressure water solenoid valves 1a, 1b, ... and the low-pressure water solenoid valves 2a, 2b, ... are connected in parallel to a water supply path 6 connected to a water supply source side (cooling water supply 200300004 port 5), and The outlets of the high-pressure water solenoid valves 1a, 1b, ... and the low-pressure water solenoid valves 2a, 2b, ... are connected to each other through communication pipes 7a, 7b, 7c, 7d to form independent complex cooling water supply paths 3a, 3b, 3c, and 3d, by independently controlling the high-pressure water solenoid valves 1a, 1b, ... and the low-pressure water solenoid valves 2a, 2b, ... of each cooling water system, the cooling water is passed through each cooling water supply path 3a, 3b, 3c, 3d are supplied into each cooling hole of the mold. In the illustrated embodiment, four cooling water supply paths 3a, 3b, 3c, and 3d are formed. In the method of independently controlling the high-pressure water solenoid valves 1a, 1b, ... and the low-pressure water solenoid valves 2a, 2b, ... and the air purging solenoid valves 11a, 11b, 11c, and 11d of each cooling water system, For example, a programmable controller is used in the sequence circuit of the cooling device A. Further, a cooling water filter 8 and a check valve 9 are provided in the water supply path 6, and a pressure regulating valve is provided between the inlet sides of the high-pressure water solenoid valves 1a, 1b, ... and the low-pressure water solenoid valves 2a, 2b, ... 10 ′ is used to reduce the pressure of high-pressure cooling water into low-pressure cooling water. In addition, air purging paths 4a, 4b, 4c, 4d are provided corresponding to the cooling water supply paths 3a, 3b, ..., respectively, so that the air purging solenoid valves 11a, 4a, 4b, ... provided in the air purging paths 4a, 4b, ... are respectively provided. 11b, ... can be controlled independently. Air purging solenoid valves 11a, 11b, ... are used when the cooling water continues to be sent into the cooling holes of the mold to cause the mold to be too cold, and the cooling water remaining in the cooling holes is purged with air to make the mold Cooling stop 'air purge solenoid valves 11a, 11b, ... send high-pressure air through the air purge paths 4a, 4b, ... into the cooling holes of the mold. 200300004 At this time, it is preferable to pass the cooling water supply paths 3a, 3b, ... and the air purging paths 4a, 4b, ... through the check valves 13a, 13b, 13c, 13d and 13'a, 13'b, 13 '. c, 13'd merge at the front end, enabling cooling water and air to be supplied to the inside of the mold cooling hole by a cooling system (piping) 12a, 12b, 12c, 12d. At this time, the check valves 13a, 13b, ..., 13'a, 13'b, ... are preferably spring-loaded check valves, so that the cooling water and air at a pressure lower than the opening pressure can be maintained at Each of the cooling water supply paths 3a, 3b, ... and the air scavenging paths 4a, 4b, .... In this way, the cooling water and air can be quickly switched and the pressure feeding can be easily and alternately performed. When the cooling water supply pressure (line pressure) of the water supply path 6 connected to the water supply source side (cooling water supply port 5) is lower than the target pressure of the high-pressure cooling water, the cooling water supply port 5 is preferred. An auxiliary pump is installed before or after, or the embodiment shown in FIG. 2 is used, and the high-pressure water sending pump 14 is connected to the high-pressure water solenoid valves 1a, 1b,... Of the water supply path 6. If the high-pressure water delivery pump 14 is provided, the high-pressure cooling water can be stably supplied to the high-pressure water solenoid valves 1 a, 1 b, .... As the high-pressure water delivery pump 14 used at this time, a commonly used pump can be used, but in the illustrated embodiment, a high-pressure air-operated cylinder pump is used. The cylinder pump is provided with a piston 14c connected by a piston rod 14b in two coaxial cylinder chambers 14a, and a cylinder head side of one cylinder chamber 14a is used as a cooling water storage chamber for storing cooling water. 14d, the other cylinder chamber is used as an air chamber, and the high-pressure air supplied to the air chamber can be used to send the cooling water in the cooling water storage chamber 14d at a high delivery pressure, even if no cooling device is provided. Water cooling. In the case of the high-pressure water delivery pump 14, 200300004, the high-pressure cooling water delivery operation is performed every time the injection operation of the casting machine 1 is performed. In the figure, reference numeral 15 denotes a solenoid valve for operating the high-pressure water delivery pump 14 and reference numeral 16 denotes an air pressure regulator connected to an air supply source for supplying high-pressure air to the high-pressure water delivery pump 14 . Next, the operation of the mold cooling device A of the first embodiment shown in FIG. 1 will be described. A programmable controller or the like is used in the sequence circuit of the cooling device A, and the high-pressure water solenoid valves 1a, 1b, ... and the low-pressure water solenoid valves 2a, 2b of the cooling water supply paths 3a, 3b, ... of each cooling water system are used in advance. The operation of the solenoid valves 11a, 11b, ... for air purging is set to a cooling mode corresponding to the shape of the mold to be cooled and the like. In accordance with the timing of the casting operation of the casting machine, a signal will be input to the cooling device A, and the cooling water of a predetermined pressure flows from the water supply source side (the cooling water supply port 5) into the inside of the cooling device A through the water supply path 6. At the same time, each cooling water The high-pressure water solenoid valves 1a, 1b, ... of the supply paths 3a, 3b, ..., and the low-pressure water solenoid valves 2a, 2b, ... and the air purging solenoid valves 11a, 11b, ... start to operate according to the planned settings. . Then, the high-pressure cooling water (having a pressure to break the vapor film generated on the inner peripheral surface of the mold cooling hole) flows from the high-pressure water solenoid valves 1a, 1b, ... through the cooling water supply paths 3a, 3b, ... into the mold for cooling Inside the hole. Therefore, the high-pressure cooling water directly contacts the inner peripheral surface of the cooling hole without being blocked by a vapor film generated on the inner peripheral surface of the cooling hole, and the mold is rapidly cooled. In addition, the low-pressure cooling water (regulated to a predetermined low pressure by the pressure regulating valve 10) flows from the low-pressure water solenoid valves 2a, 2b, ... through the cooling water supply paths 3a, 3b, ... into the cooling holes of the mold, and the mold Slower than cold 200300004. On the other hand, if the low-pressure cooling water is continuously sent out, the mold may be too cold, so after the low-pressure cooling water stops being sent out, the high-pressure air is removed from the air solenoid valves 11a, 11b, ... through the air removal paths 4a, 4b, … Sent to the cooling hole, and the cooling water in the cooling hole is removed by air to stop the cooling effect of the cooling water. If the water supply pressure (line pressure) of the cooling water in the water supply path 6 connected to the water supply source side (the cooling water supply port 5) is lower than the target pressure of the high-pressure cooling water, the second embodiment is shown in FIG. 2 The mold cooling device A is equipped with a high-pressure water delivery pump 14 and a solenoid valve 15 attached thereto. In the case of this second embodiment, when there is a cooling system using high-pressure cooling water when a start signal is input, the solenoid valve 15 of the high-pressure water delivery pump is opened, and the air regulated by the air pressure regulator 16 is supplied to the high-pressure water delivery. With a pump 14. Then, the piston 14c of the high-pressure water delivery pump 14 is operated to perform the high-pressure cooling water delivery operation. The cooling water stored in the cooling water storage chamber 14d passes from the high-pressure water solenoid valves 1a, 1b, ... through the cooling water supply path 3a. , 3b, ... flow into the cooling holes of the mold. When high-pressure cooling water is not required, the solenoid valve 15 is closed, and the piston 14c of the high-pressure water sending pump 14 is returned to the original position, and cooling water is supplied from the water supply path 6 to the cooling water storage chamber 14d. According to this mold cooling device operating in this way, the high-pressure water solenoid valves 1a, 1b, ... and the low-pressure water solenoid valves 2a, ... are provided to the cooling water supply paths 3a, 3b, ... in the respective cooling systems 12a, 12b, .... 2b, ... and air purging paths 4a, 4b, ... The air purging solenoid valves 11a, 11b, ... are controlled by 11 200300004, as shown in the cooling mode (1) ~ (4) '3 Most of the cooling holes provided in the mold are cooled in a desired cooling mode. The cooling mode (1) is, for example, a situation in which the temperature of the mold sharply rises due to the heat of the melt in the cavity. By matching the mold, When the temperature rises, a cooling start signal is input, and the high-pressure water solenoid valves 1a, 1b, ... of the cooling water supply paths 3a, 3b, ... are opened for a predetermined time, and the high-pressure cooling water passes through the cooling water supply paths 3a, 3b, ... The cooling system (piping) 12a, 12b, ... flows into the cooling holes of the mold, so that the mold cools down quickly and reliably. Then, in order to prevent the mold from being too cold, the high-pressure water solenoid valves 1a, 1b, ... are closed. Air demagnetization 11a, 11b, ... are opened, and high-pressure air flows from the air scavenging paths 4a, 4b, ... through the cooling system (piping) 12a, 12b, ... to the inside of the cooling holes of the mold, and the cooling water remaining inside the cooling holes is subjected to air Eliminate to stop the cooling effect of cooling water. The cooling mode (2) is, for example, a situation in which the temperature of the mold sharply rises due to the heat of the melt in the cavity, and a cooling start signal is input by matching the timing of the temperature rise, and the cooling water supply paths 3a, 3b, ... The high-pressure water solenoid # valves 1a, 1b, ... are opened for a predetermined time, so that high-pressure cooling water flows from the cooling water supply paths 3a, 3b, ... through the cooling system (piping) 12a, 12b, ... into the cooling holes of the mold, After the mold is cooled quickly and reliably, for example, when the new heat source disappears when the product is taken out, the high-pressure water solenoid valves 1a, 1b, ... are closed, and the low-pressure water solenoid valves 2a, 2b, ... are opened for a predetermined time, so that the low-pressure cooling water flows. To the inside of the cooling hole of the mold, then to prevent the mold from being too cold, after closing the low-pressure water solenoid valves 2a, 2b, ..., open the air removal solenoid valve 12 200300004 lla, 11b, ... The cooling water is air-eliminated to stop the cooling effect of the cooling water. The cooling mode (3) is, for example, when the temperature of the mold is not high, by inputting a cooling start signal, the low-pressure water solenoid valves 2a, 2b, ... of the cooling water supply paths 3a, 3b, ... are opened for a predetermined time, The low-pressure cooling water is allowed to flow into the cooling holes of the mold. Then, to prevent over-cooling of the mold, the low-pressure water solenoid valves 2a, 2b, ... are closed, and the air purging solenoid valves 11a, 11b, ... are opened. The cooling water inside the hole is purged with air to stop the cooling effect of the cooling water. The special cooling mode (4) is inputting the cooling start signal 'open the high-pressure water solenoid valves 1a, 1b, ... of the cooling water supply paths 3a, 3b, ... for a predetermined time, and remove the high-pressure cooling water from the cooling water supply paths 3a, 3b. , ... through the cooling system (piping) 12a, 12b, ... flow into the cooling holes of the mold, after the mold is quickly cooled, once the high-pressure water solenoid valves 1 a, 1 b, ... are closed, the low-pressure water solenoid valve 2a , 2b, ... Open the predetermined time, let the low-pressure cooling water flow to the inside of the cooling hole to cool the mold, and then input the cooling start signal. The high-pressure water solenoid valve 1a, 1b, ... is opened for the predetermined time, so that the high-pressure cooling water flows to # mold of In the cooling hole, the high-pressure water solenoid valves 1a, 1b, ... are closed, and the low-pressure water solenoid valves 2a, 2b, ... are opened for a predetermined time, so that the low-pressure cooling water passes through the cooling holes, and repeats as described above. Cooling mode. Since the mold cooling device of the present invention is structured as described above, even when the cooling mode is changed depending on the cooling part of the mold, or when a new cooling system is added to replace the mold, a mold cooling device can be installed around the casting machine. 13 200300004 Furthermore, by programmatically controlling high-pressure water solenoid valves, low-pressure water solenoid valves, air purging solenoid valves, etc., the desired place of cooling through most of the cooling holes in the mold can be cooled as desired. Mode to cool, so you can select the desired cooling mode with one switch. [Brief description of the drawings] (I) Schematic part FIG. 1 is a circuit diagram of the first embodiment of the present invention. Fig. 2 is a circuit diagram of the first embodiment of the present invention. Fig. 3 is an explanatory diagram of an example of a cooling mode using the mold cooling device of the present invention. (zl) Symbols for components 1a 1b 1c 1d Solenoid valve for pressurized water 2a 2b 2c 2d Solenoid valve for pressurized water 3a 3b 3c 3d Cooling water supply path 4a 4b 4c 4d Purge path 7 Cooling water supply port 8 Water supply path 7a 7b 7c 7d Connecting pipe 8 Filter for cooling water 11 Check valve 12 Pressure regulating valve 11a 11b 11c 11d Air solenoid valve 12a 12b 12c 12d Cooling system (piping) 14 200300004 13a 13b 13c 13d Check valve 13, a 13 'b 13'c 13'd Check valve 14 Pump for high pressure water delivery 15 Solenoid valve for pump for partial pressure water delivery 16 Air pressure regulator
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