JPH0581348B2 - - Google Patents
Info
- Publication number
- JPH0581348B2 JPH0581348B2 JP63191820A JP19182088A JPH0581348B2 JP H0581348 B2 JPH0581348 B2 JP H0581348B2 JP 63191820 A JP63191820 A JP 63191820A JP 19182088 A JP19182088 A JP 19182088A JP H0581348 B2 JPH0581348 B2 JP H0581348B2
- Authority
- JP
- Japan
- Prior art keywords
- plunger sleeve
- plunger
- hot water
- molten metal
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000002844 melting Methods 0.000 claims description 19
- 230000008018 melting Effects 0.000 claims description 19
- 238000004512 die casting Methods 0.000 claims description 15
- 238000005266 casting Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 5
- 230000006837 decompression Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は、金型のキヤビテイ内を減圧しながら
ブランジヤスリーブ内の溶湯をプランジヤチツプ
で圧入充填するようにした真空ダイカスト装置に
関するものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a vacuum die-casting device that press-fills molten metal into a plunger sleeve with a plunger tip while reducing the pressure inside the cavity of a mold. .
＜従来の技術＞
従来の真空ダイカスト装置では、金型の型合せ
面にキヤビテイと連通した吸引通路を形成し、そ
の吸引通路に真空ポンプを接続せしめてキヤビテ
イ内を減圧するようにしていた。<Prior Art> In a conventional vacuum die-casting apparatus, a suction passage communicating with the cavity is formed on the mold mating surface of the mold, and a vacuum pump is connected to the suction passage to reduce the pressure inside the cavity.
しかし乍ら、キヤビテイ内は溶湯を供給するプ
ランジヤスリーブの注湯口を通して大気開放され
ているため、実際の鋳造に際しては、上記吸引通
路を通してキヤビテイを真空引きしながら注湯口
からプランジヤスリーブ内に溶湯を給湯せしめ、
その後注湯口をプランジヤチツプまたは他の手段
でもつて密閉してキヤビテイ内乃至プランジヤス
リーブ内の減圧させ、然る後にプランジヤチツプ
で溶湯を圧入充填しなければならなかつた。 However, since the interior of the cavity is exposed to the atmosphere through the pouring port of the plunger sleeve that supplies molten metal, during actual casting, the cavity is evacuated through the suction passage and molten metal is supplied from the pouring port into the plunger sleeve. Seshime,
Thereafter, the pouring spout must be sealed with a plunger tip or other means to reduce the pressure in the cavity or plunger sleeve, and then the plunger tip must be used to press-fill the molten metal.
従つて、キヤビテイ内を減圧することも含めて
鋳造に要する時間が非常に掛ると共に、金型の吸
引通路が溶湯で目詰りしやすく、総じて効率的な
鋳造ができず、しかも金型自体の加工費が嵩みコ
スト高となる不具合があつた。 Therefore, the time required for casting, including the process of reducing the pressure inside the cavity, is very long, and the suction passage of the mold is easily clogged with molten metal, making it impossible to perform efficient casting in general, and making it difficult to process the mold itself. There was a problem that increased costs.
＜発明が解決しようとする課題＞
本発明はこのような従来の不具合に鑑みてなさ
れたものであり、キヤビテイ内乃至プランジヤス
リーブ内を迅速に減圧真空引きして鋳造に要する
時間を大巾に短縮することが出来ると共に、キヤ
ビテイ内を減圧真空引きするのに金型自体に吸引
通路等の加工を一切加える必要がなく通常のダイ
カスト装置に使用する金型と同様の加工費で済み
コストダウンを期することが出来、しかも従来の
ようにプランジヤスリーブに注湯口を形成してラ
ドルで給湯せずに、プランジヤスリーブ内の減圧
吸引力でもつて溶湯を溶解炉から直接的にプラン
ジヤスリーブ内に給湯することが出来、更に溶解
炉中で発生するガスが溶湯中に入り込むのを防止
することが出来る真空ダイカスト装置を提供せん
とするものである。<Problems to be Solved by the Invention> The present invention has been made in view of the above-mentioned problems in the prior art, and aims to reduce the time required for casting by quickly vacuuming the inside of the cavity or plunger sleeve. In addition, there is no need to add suction passages or other processing to the mold itself in order to vacuum the inside of the cavity, and the processing cost is the same as that of molds used in ordinary die-casting equipment, resulting in cost reduction. Moreover, instead of forming a pouring hole in the plunger sleeve and supplying hot water with a ladle as in the past, the molten metal can be directly supplied from the melting furnace into the plunger sleeve using the vacuum suction force inside the plunger sleeve. It is an object of the present invention to provide a vacuum die-casting apparatus which can prevent gases generated in a melting furnace from entering the molten metal.
＜課題を解決するための手段＞
斯る目的を達成する本発明の請求項１に係る真
空ダイカスト装置は、金型キヤビテイ内を減圧し
ながらプランジヤスリーブ内の溶湯をプランジヤ
チツプ電圧入充填するようにした真空ダイカスト
装置において、プランジヤスリーブに、減圧時に
おけるプランジヤチツプの待機位置を基準にして
前方位置に真空ポンプと接続した吸引管を後方位
置に溶解炉と接続した給湯管を夫々連通接続せし
め、上記吸引管を通してプランジヤスリーブ内乃
至キヤビテイ内を減圧しながらプランジヤチツプ
を上記給湯管の接続口よりも後方位置に移動待機
させて上記給湯管からプランジヤスリーブ内に給
湯するようにした事を特徴としたものであり、請
求項２に係る真空ダイカスト装置は、前記プラン
ジヤスリーブの後端を密閉すると共に、前記溶解
炉を密閉して真空ポンプに連通せしめた事を特徴
としたものである。<Means for Solving the Problems> A vacuum die casting apparatus according to claim 1 of the present invention that achieves the above object is configured such that the plunger tip is charged with molten metal in the plunger sleeve while reducing the pressure in the mold cavity. In the vacuum die-casting apparatus, the plunger sleeve is connected to a suction pipe connected to a vacuum pump at a forward position and a hot water supply pipe connected to a melting furnace at a rear position, respectively, with reference to the standby position of the plunger tip at the time of depressurization. The plunger tip is moved to a position rearward of the connection port of the hot water supply pipe and placed on standby while depressurizing the inside of the plunger sleeve or cavity through the suction pipe, and hot water is supplied from the hot water supply pipe into the plunger sleeve. The vacuum die casting apparatus according to claim 2 is characterized in that the rear end of the plunger sleeve is sealed, and the melting furnace is sealed and communicated with a vacuum pump.
＜実施例＞
以下、本発明実施の一例を図面に基づいて説明
する。<Example> Hereinafter, an example of implementing the present invention will be described based on the drawings.
図示例のものは、周知の水平射出式コールドチ
ヤンバ型ダイカストマシンを示し、従来と同様、
固定金型１ａと可動金型１ｂとで構成されるキヤ
ビテイ２と連通状にプランジヤスリーブ３が取付
けられ、そのプランジヤスリーブ３の内部にプラ
ンジヤチツプ４が摺動自在に嵌挿されている。 The illustrated example shows a well-known horizontal injection cold chamber type die casting machine, and as with the conventional one,
A plunger sleeve 3 is attached in communication with a cavity 2 consisting of a fixed mold 1a and a movable mold 1b, and a plunger tip 4 is slidably inserted into the plunger sleeve 3.
そして、プランジヤスリーブ３には、減圧時に
おけるプランジヤチツプ４の待機位置を基準にし
て、プランジヤチツプ４の前方位置に真空ポンプ
５と接続した吸引管６を連通接続せしめると共
に、プランジヤチツプ４の後方位置に溶解炉７と
接続した給湯管８を連通接続せしめる。 A suction pipe 6 connected to a vacuum pump 5 is connected to the plunger sleeve 3 at the front position of the plunger tip 4, and a suction pipe 6 connected to the vacuum pump 5 is connected to the plunger sleeve 3 at the rear position of the plunger tip 4, based on the standby position of the plunger tip 4 during depressurization. The hot water supply pipe 8 connected to the melting furnace 7 is connected for communication.
吸引管６はプランジヤスリーブ３内乃至キヤビ
テイ２内を減圧するためのものであり、減圧時に
おけるプランジヤチツプ４の待機位置（第１図の
状態）を基準にして、プランジヤチツプ４よりも
前方（金型１寄り）に位置させてプランジヤスリ
ーブ３の上部側に開口形成した接続口６ａに連通
接続させ、その基端側を真空ポンプ５に連通接続
させる。 The suction pipe 6 is for reducing the pressure inside the plunger sleeve 3 or inside the cavity 2, and is located in front of the plunger tip 4 (metallic) based on the standby position of the plunger tip 4 (the state shown in Fig. 1) when the pressure is reduced. It is located near the mold 1) and is connected to a connection port 6a formed in the upper side of the plunger sleeve 3, and its base end is connected to the vacuum pump 5.
又、給湯管８はプランジヤスリーブ３内に溶湯
を給湯するためのものであり、減圧時におけるプ
ランジヤチツプ４の待機位置を基準にして、プラ
ンジヤチツプ４よりも後方（プランジヤスリーブ
４の後端寄り）で且つ給湯待機位置（第２図の状
態）よりも前方に位置させてプランジヤスリーブ
３の上部側に開口形成した接続口８ａに連通接続
させ、その基端側８ｂを溶解炉７の溶湯ａ中に連
通接続させる。尚、図中９は給湯管８内の溶湯が
凝固しないように保温するためのヒータである。 The hot water supply pipe 8 is for supplying molten metal into the plunger sleeve 3, and is located behind the plunger tip 4 (near the rear end of the plunger sleeve 4) with reference to the standby position of the plunger tip 4 during depressurization. It is located forward of the hot water supply standby position (the state shown in FIG. 2) and is connected to a connecting port 8a formed in the upper part of the plunger sleeve 3, and its base end 8b is connected to the molten metal a of the melting furnace 7. be connected to. Note that 9 in the figure is a heater for keeping the molten metal in the hot water supply pipe 8 warm so that it does not solidify.
溶解炉７は、金属を直接溶解するための炉の他
に、溶解した金属（溶湯）を溜め置く保持炉であ
つても良く、また第４図に示す如く密閉されたも
のでも良い。この場合、密閉した溶解炉７の上部
にパイプ１２を介して吸引ポンプ１０を連通接続
せしめて炉内に発生するガスを排出させるように
すると共に、プランジヤスリーブ３の後端３ａを
密閉し、溶解炉７とプランジヤスリーブ３の後端
内部３′とを連通管１１でもつて互いに連通接続
させて、溶解炉７の内部とプランジヤスリーブ３
の後端内部３′との圧力を等しく保持させる。 In addition to a furnace for directly melting metal, the melting furnace 7 may be a holding furnace for storing molten metal (molten metal), or may be a closed furnace as shown in FIG. 4. In this case, a suction pump 10 is connected to the upper part of the sealed melting furnace 7 via a pipe 12 to exhaust the gas generated in the furnace, and the rear end 3a of the plunger sleeve 3 is sealed, and the melting The furnace 7 and the rear end inside 3' of the plunger sleeve 3 are connected to each other through a communication pipe 11, so that the inside of the melting furnace 7 and the inside of the plunger sleeve 3 are connected to each other through a communication pipe 11.
The pressure is maintained equally with the rear end interior 3'.
而して、ダイカスト鋳造する場合には、プラン
ジヤスリーブ３内のプランジヤチツプ４を吸引管
６の接続口６ａ給湯管８の接続口８ａの間位置
（減圧待機位置）に待機させ（第１図の状態）、こ
の状態でもつて真空ポンプ５をはたらかせて吸引
管６を通してプランジヤスリーブ３内乃至キヤビ
テイ２内を減圧する。次に、プランジヤチツプ４
を給湯管８の接続口８ａよりも後方位置（給湯待
機位置）に移動させる。すると、プランジヤスリ
ーブ３内乃至キヤビテイ２内が減圧されているた
め、溶解炉７内の溶湯ａが給湯管８を通してプラ
ンジヤスリーブ３内に給湯される（第２図の状
態）。溶湯a′の給湯量はプランジヤチツプ４の待
機時間によりコントロールされる。そして、プラ
ンジヤスリーブ３内に溶湯ａを所要量給湯した
後、プランジヤチツプ４を前進させてプランジヤ
スリーブ３内の溶湯a′を金型キヤビテイ２内へ圧
入充填し、製品ｂを鋳造する（第３図の状態）。
この際、給湯管８内の溶湯は給湯管８の接続口８
ａが大気開放されるので、自然に溶解炉７中へ戻
され、また給湯管８の接続口８ａからプランジヤ
スリーブ３の後端内部３′に落下した余剰の溶湯
は製品鋳造後に後退してきたプランジヤチツプ４
でもつてプランジヤスリーブ３の外へ排出され
る。 In the case of die casting, the plunger tip 4 in the plunger sleeve 3 is placed on standby at a position (decompression standby position) between the connection port 6a of the suction pipe 6 and the connection port 8a of the hot water supply pipe 8 (decompression standby position). state), even in this state, the vacuum pump 5 operates to reduce the pressure in the plunger sleeve 3 and the cavity 2 through the suction pipe 6. Next, plunger tip 4
is moved to a position rearward of the connection port 8a of the hot water supply pipe 8 (hot water supply standby position). Then, since the pressure inside the plunger sleeve 3 and the inside of the cavity 2 is reduced, the molten metal a in the melting furnace 7 is supplied into the plunger sleeve 3 through the hot water supply pipe 8 (the state shown in FIG. 2). The amount of molten metal a' supplied is controlled by the standby time of the plunger tip 4. Then, after supplying the required amount of molten metal a into the plunger sleeve 3, the plunger tip 4 is moved forward to press-fill the molten metal a' in the plunger sleeve 3 into the mold cavity 2 to cast the product b (third condition).
At this time, the molten metal in the hot water supply pipe 8 is
Since molten metal a is exposed to the atmosphere, it is naturally returned to the melting furnace 7, and excess molten metal that has fallen from the connection port 8a of the hot water pipe 8 into the rear end interior 3' of the plunger sleeve 3 is removed from the plunger that has retreated after casting the product. Chip 4
With this, it is discharged out of the plunger sleeve 3.
＜発明の効果＞
本発明の真空ダイカスト装置は斯様に構成した
ので、以下の効果を奏する。<Effects of the Invention> Since the vacuum die casting apparatus of the present invention is configured in this manner, it has the following effects.
プランジヤスリーブに真空ポンプと接続した
吸引管を連通接続せしめてキヤビテイ内乃至プ
ランジヤスリーブ内を減圧真空引きするように
したので、従来の金型キヤビテイ側から減圧真
空引きする場合と比較して、キヤビテイ内乃至
プランジヤスリーブ内を迅速に減圧することが
可能となり、鋳造に要する時間を大巾に短縮す
ることが出来る。 A suction pipe connected to a vacuum pump is connected to the plunger sleeve so that the inside of the cavity or plunger sleeve is vacuumed. It becomes possible to quickly reduce the pressure inside the plunger sleeve, and the time required for casting can be greatly shortened.
キヤビテイ内を減圧真空引きするのに金型自
体に吸引通路等の加工を一切加える必要がな
く、通常のダイカスト装置に使用する金型と同
様の加工費で済み、金型コスト低減化を期する
ことが出来る。 There is no need to add suction passages or other processing to the mold itself in order to vacuum the inside of the cavity, and the processing costs are the same as those for molds used in regular die-casting equipment, reducing mold costs. I can do it.
プランジヤスリーブ内への給湯に際して、プ
ランジヤスリーブ内の減圧吸引力でもつて溶湯
を溶解炉から直接的に吸引給湯することが出来
る。即ち、キヤビテイ乃至プランジヤスリーブ
内を減圧真空引きした状態でもつて、プランジ
ヤチツプを後退動作させるだけで自動的に溶湯
が溶解炉からプンジヤスリーブ内にオンライン
で給湯されるので、湯膜のない清浄な溶湯をキ
ヤビテイ内へ供給できると共に、従来のよう注
湯口やラドル等の給湯装置やプランジヤスリー
ブ内を減圧保持するべく注湯口を密閉するため
の機構が一切不要となり、その結果、設備コス
トを大巾に低減化することが出来ると共に、鋳
造サイクルのアツプを図ることが出来る。 When supplying hot water into the plunger sleeve, the molten metal can be directly sucked and supplied from the melting furnace using the vacuum suction force within the plunger sleeve. In other words, even when the inside of the cavity or plunger sleeve is vacuumed, molten metal is automatically supplied online from the melting furnace to the plunger sleeve by simply moving the plunger tip backward, so that it is clean and free of hot water film. In addition to being able to supply molten metal into the cavity, there is no need for conventional hot water supply equipment such as a pouring spout or ladle, or a mechanism for sealing the pouring spout to maintain reduced pressure inside the plunger sleeve, resulting in a significant reduction in equipment costs. It is possible to reduce the number of times and increase the casting cycle.
プランジヤスリーブ内への給湯停止と同時に
キヤビテイ内へのプランジヤチツプによる溶湯
の圧入充填が行なわれるので、一層の鋳造サイ
クルアツプを図ることが出来る。 Since molten metal is press-filled into the cavity by the plunger tip at the same time as the supply of hot water into the plunger sleeve is stopped, the casting cycle can be further increased.
また、本発明請求項２に記載の真空ダイカス
ト装置によれば、上記〜の効果に加えて、
溶解炉中で発生するガスが溶湯中に入り込むの
を防止することが出来、より清浄な溶湯をキヤ
ビテイ内へ供給することが出来る。 Further, according to the vacuum die casting apparatus according to claim 2 of the present invention, in addition to the above effects,
Gas generated in the melting furnace can be prevented from entering the molten metal, and cleaner molten metal can be supplied into the cavity.
第１図乃至第３図は本発明請求項１に係る装置
の一実施例を示し、第１図は減圧待機状態を示す
断面図、第２図は給湯状態を示す断面図、第３図
は溶湯の圧入充填状態を示す断面図である。第４
図は本発明請求項２に係る装置の一実施例を示す
断面図である。
図中、１：金型、１ａ：固定金型、１ｂ：可動
金型、２：キヤビテイ、３：プランジヤスリー
ブ、４：プランジヤチツプ、５：真空ポンプ、
６：吸引管、６ａ：接続口、７：溶解炉、８：給
湯管、８ａ：接続口、１０：吸引ポンプ、１１：
連通管。
1 to 3 show an embodiment of the apparatus according to claim 1 of the present invention, in which FIG. 1 is a sectional view showing a decompression standby state, FIG. 2 is a sectional view showing a hot water supply state, and FIG. 3 is a sectional view showing a hot water supply state. FIG. 3 is a cross-sectional view showing a state of press-fitting molten metal. Fourth
The figure is a sectional view showing an embodiment of the apparatus according to claim 2 of the present invention. In the figure, 1: mold, 1a: fixed mold, 1b: movable mold, 2: cavity, 3: plunger sleeve, 4: plunger tip, 5: vacuum pump,
6: Suction pipe, 6a: Connection port, 7: Melting furnace, 8: Hot water supply pipe, 8a: Connection port, 10: Suction pump, 11:
Communication pipe.
Claims (1)
スリーブ内の溶湯をプランジヤチツプで圧入充填
するようにした真空ダイカスト装置において、プ
ランジヤスリーブに、減圧時におけるプランジヤ
チツプの待機位置を基準にして前方位置に真空ポ
ンプと接続した吸引管を後方位置に溶解炉と接続
した給湯管を夫々連通接続せしめ、上記吸引管を
通してプランジヤスリーブ内乃至キヤビテイ内を
減圧しながらプランジヤチツプを上記給湯管の接
続口よりも後方位置に移動待機させて上記給湯管
からプランジヤスリーブ内に給湯するようにした
事を特徴とする真空ダイカスト装置。 ２ 前記プランジヤスリーブの後端を密閉すると
共に、前記溶解炉を密閉して吸引ポンプに連通せ
しめた事を特徴とする請求項１記載の真空ダイカ
スト装置。[Scope of Claims] 1. In a vacuum die casting device in which molten metal is press-filled into a plunger sleeve with a plunger tip while reducing pressure inside a mold cavity, the plunger sleeve is provided with a standby position of the plunger tip at the time of pressure reduction. Connect the suction pipe connected to the vacuum pump at the front position and the hot water supply pipe connected to the melting furnace at the rear position, respectively, and connect the plunger tip to the hot water pipe while reducing the pressure inside the plunger sleeve or cavity through the suction pipe. A vacuum die-casting device characterized in that hot water is supplied into the plunger sleeve from the hot water supply pipe by being moved to a position rearward of the mouth and on standby. 2. The vacuum die casting apparatus according to claim 1, wherein the rear end of the plunger sleeve is sealed, and the melting furnace is sealed and communicated with a suction pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63191820A JPH0241750A (en) | 1988-07-29 | 1988-07-29 | Plunger molten metal supplying vacuum die casting device and reduced pressure smelting vacuum die casting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63191820A JPH0241750A (en) | 1988-07-29 | 1988-07-29 | Plunger molten metal supplying vacuum die casting device and reduced pressure smelting vacuum die casting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0241750A JPH0241750A (en) | 1990-02-09 |
| JPH0581348B2 true JPH0581348B2 (en) | 1993-11-12 |
Family
ID=16281067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63191820A Granted JPH0241750A (en) | 1988-07-29 | 1988-07-29 | Plunger molten metal supplying vacuum die casting device and reduced pressure smelting vacuum die casting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0241750A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023810B (en) * | 2019-12-23 | 2021-12-03 | 江西金鑫发铝业有限公司 | Aluminum melting furnace for processing and producing aluminum profiles with uniform heating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056464A (en) * | 1983-09-06 | 1985-04-02 | Waieru Kogyo Kk | Die cast molding method |
| JPS62207554A (en) * | 1986-03-05 | 1987-09-11 | Kozo Kuroki | Vacuum die casting device |
| JPS62296946A (en) * | 1986-06-14 | 1987-12-24 | Kozo Kuroki | Vacuum die-casting machine |
-
1988
- 1988-07-29 JP JP63191820A patent/JPH0241750A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056464A (en) * | 1983-09-06 | 1985-04-02 | Waieru Kogyo Kk | Die cast molding method |
| JPS62207554A (en) * | 1986-03-05 | 1987-09-11 | Kozo Kuroki | Vacuum die casting device |
| JPS62296946A (en) * | 1986-06-14 | 1987-12-24 | Kozo Kuroki | Vacuum die-casting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0241750A (en) | 1990-02-09 |
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