JPH0229423B2 - - Google Patents
Info
- Publication number
- JPH0229423B2 JPH0229423B2 JP58026971A JP2697183A JPH0229423B2 JP H0229423 B2 JPH0229423 B2 JP H0229423B2 JP 58026971 A JP58026971 A JP 58026971A JP 2697183 A JP2697183 A JP 2697183A JP H0229423 B2 JPH0229423 B2 JP H0229423B2
- Authority
- JP
- Japan
- Prior art keywords
- ladle
- molten metal
- injection sleeve
- rising speed
- head
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D39/00—Equipment for supplying molten metal in rations
- B22D39/02—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume
- B22D39/026—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by volume using a ladler
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Description
【発明の詳細な説明】
本発明はダイカストマシンにおける自動給湯方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic hot water supply method in a die casting machine.
従来より、竪型ダイカストマシンにおいて、射
出スリーブ内にラドルでアルミニウム合金などの
溶湯を供給する場合は、第１図に示すような形状
のラドル１を用い、ラドル１を射出スリーブ２の
上方で回動させ、射出スリーブ２内に溶湯を落下
させていた。この場合、ラドル１の排湯口１ａか
ら溶湯の落下点であるプランジヤチツプ３の上面
までの高さは比較的に高く、溶湯は射出スリーブ
２内に供給されたとき、図示したように渦を巻い
ていた。したがつて、溶湯が撹乱され、空気との
接触も増えるので、酸化アルミニウムが増え、空
気の巻き込み量も増え、また、湯温も少し下が
り、射出製品が不良品となる原因になつていた。 Conventionally, in a vertical die casting machine, when feeding molten metal such as aluminum alloy into the injection sleeve with a ladle, a ladle 1 having a shape as shown in Fig. 1 is used, and the ladle 1 is rotated above the injection sleeve 2. The molten metal was dropped into the injection sleeve 2 by moving the molten metal. In this case, the height from the discharge port 1a of the ladle 1 to the top surface of the plunger tip 3, which is the point at which the molten metal falls, is relatively high, and when the molten metal is supplied into the injection sleeve 2, it swirls as shown in the figure. was. As a result, the molten metal is disturbed and comes into contact with air, which increases aluminum oxide, increases the amount of air involved, and lowers the temperature of the molten metal, leading to defective injection products.
本発明は、これらの欠点をなくすためのもの
で、射出スリーブ内への給湯時に、溶湯が空気に
ふれるのを少なくし、また、空気を巻き込まない
ようにして、静かに給湯しうるようにしたもので
ある。 The present invention is aimed at eliminating these drawbacks, and is designed to reduce the amount of molten metal coming into contact with air when feeding into the injection sleeve, and also to prevent air from being drawn in so that hot water can be fed quietly. It is something.
本発明においては、射出スリーブ内に装入可能
に下部を伸ばしており、かつ、下端部に設けた溶
湯口を開閉しうるラドルを用い、このラドル内に
溶湯を入れて溶湯口を閉じた状態で、このラドル
の溶湯口のある下端部を射出スリーブ内の下方ま
でそう入し、この状態で溶湯口を開いてラドル内
の溶湯を射出スリーブ内で排出させ始め、ラドル
から排出された射出スリーブ内の溶湯の上面がラ
ドルの前記溶湯口の位置よりも高くなつてからラ
ドルを射出スリーブ外まで上昇させるようにし、
そのときに、ほぼ同様な条件で溶湯しうるよう
に、ラドル内の溶湯の上面と射出スリーブ内の溶
湯の上面との間のヘツドが小さくなれば、ラドル
の上昇速度が遅くなるような所定の函数からなる
ヘツド−ラドル上昇速度曲線にしたがつた上昇速
度でラドルを上昇させるようにした。また、ラド
ル上昇の後半で前記ヘツドが小さくなつたら、前
記ヘツド−ラドル上昇速度曲線によらずにラドル
の上昇速度を早めて、ラドル内の残りの溶湯をさ
つと出しうるようにした。 In the present invention, a ladle whose lower part is extended so that it can be inserted into the injection sleeve and which can open and close the molten metal spout provided at the lower end is used, and the state in which the molten metal is poured into the ladle and the molten metal spout is closed is used. Then, insert the lower end of the ladle with the molten metal spout into the injection sleeve until it reaches the bottom of the injection sleeve, and in this state, open the molten metal spout and start discharging the molten metal in the ladle into the injection sleeve. The ladle is raised to the outside of the injection sleeve after the upper surface of the molten metal in the ladle becomes higher than the position of the molten metal inlet of the ladle,
At that time, if the head between the upper surface of the molten metal in the ladle and the upper surface of the molten metal in the injection sleeve becomes smaller so that the molten metal can be melted under almost the same conditions, the rising speed of the ladle will be slowed down. The ladle is raised at a rising speed according to a head-ladle rising speed curve consisting of a function. Furthermore, when the head becomes smaller in the latter half of the ladle rising, the rising speed of the ladle is increased without depending on the head-ladle rising speed curve, so that the remaining molten metal in the ladle can be taken out quickly.
つぎに、図面に示した１実施例によつて、本発
明をさらに詳細に説明する。 Next, the present invention will be explained in more detail with reference to an embodiment shown in the drawings.
第２図において、２は射出スリーブ、３は射出
スリーブ２内を上下方向に摺動するプランジヤチ
ツプである。 In FIG. 2, 2 is an injection sleeve, and 3 is a plunger tip that slides vertically within the injection sleeve 2.
給湯用のラドル１は、下端部が射出スリーブ２
内に入りうるようなやや縦長の形状とし、下端部
に溶湯口４を設け、弁棒５で溶湯口４を開閉しう
るものとした。１ｂは空気が出入する穴である。
６は弁棒５を上下動させるためのシリンダであ
り、ラドル１の上に取付けた。７は図示していな
い他端部を軸として回動するリンク、８は軸９に
よつてリンク７の先端部に回動自在に取付けたチ
エンホイル、１０はチエンホイル８と、リンク７
の他端部に回動自在に設けた他のチエンホイルと
に巻掛けたチエン、１１はチエンホイル８とシリ
ンダ６を一体的に連結したブラケツトであり、リ
ンク７、チエンホイル８およびチエン１０などは
ラドル搬送装置１２を形成する。 The hot water supply ladle 1 has an injection sleeve 2 at its lower end.
It has a slightly elongated shape so that it can be inserted inside, and a melting spout 4 is provided at the lower end, and the melting spout 4 can be opened and closed with a valve rod 5. 1b is a hole through which air enters and exits.
6 is a cylinder for moving the valve stem 5 up and down, and is attached to the top of the ladle 1. 7 is a link that rotates around the other end (not shown); 8 is a chain wheel rotatably attached to the tip of the link 7 by a shaft 9; 10 is the chain wheel 8 and the link 7;
The chain 11 is a bracket that integrally connects the chain wheel 8 and the cylinder 6, and the link 7, the chain wheel 8, the chain 10, etc. are ladle conveyed. A device 12 is formed.
射出スリーブ２内に溶湯を供給する場合は、ま
ず、図示していない炉の溶湯の中にラドル１の下
部を入れ、溶湯口４を溶湯の表面酸化膜よりも下
に位置させ、シリンダ６を作動させて弁棒５を上
昇させ、溶湯口４よりラドル１内に所望の量の溶
湯を入れる。この場合、炉内の溶湯表面に対する
ラドル１の上下方向の位置によつて、給湯量が決
まる。炉内においてラドル１を所定の位置に止
め、給湯量を決めるのは、ラドル１等に取付けた
従来公知の図示していない電極棒の作用によつて
制御することができる。 When supplying molten metal into the injection sleeve 2, first place the lower part of the ladle 1 into the molten metal in a furnace (not shown), position the molten metal inlet 4 below the surface oxide film of the molten metal, and open the cylinder 6. The valve rod 5 is raised by actuation, and a desired amount of molten metal is poured into the ladle 1 from the molten metal spout 4. In this case, the amount of hot water supplied is determined by the vertical position of the ladle 1 with respect to the surface of the molten metal in the furnace. Fixing the ladle 1 at a predetermined position in the furnace and determining the amount of hot water to be supplied can be controlled by the action of a conventionally known electrode rod (not shown) attached to the ladle 1 or the like.
ラドル１内に所望量の溶湯をくみ入れたら、シ
リンダ６の作用で弁棒５を下げて溶湯口４をふさ
ぎ、ラドル搬送装置１２の作用によつて、ラドル
１を移動させ、第２図に示したように、ラドル１
の下部を待機位置にある射出スリーブ２内にそう
入する。このとき、ラドル１の下端部にある溶湯
口４を、射出スリーブ２内の下方にあるプランジ
ヤチツプ３のすぐ上に位置させるようにした。こ
の時のラドル１下端の溶湯口４とプランジヤチツ
プ３との間の距離は、ラドル１内の溶湯の高さや
溶湯口４の面積によつても異なるが、例えば、５
〜10mmのように、溶湯が流れ出す際に、溶湯内に
ガスが巻込まれない程度の比較的に小さい距離に
した。 Once the desired amount of molten metal has been pumped into the ladle 1, the valve stem 5 is lowered by the action of the cylinder 6 to close the molten metal inlet 4, and the ladle 1 is moved by the action of the ladle conveying device 12, as shown in FIG. As shown, ladle 1
Insert the lower part of the injection sleeve 2 into the injection sleeve 2 in the standby position. At this time, the melt spout 4 at the lower end of the ladle 1 was positioned just above the plunger tip 3 located below within the injection sleeve 2. At this time, the distance between the molten metal spout 4 at the lower end of the ladle 1 and the plunger tip 3 varies depending on the height of the molten metal in the ladle 1 and the area of the molten metal spout 4;
The distance was set to ~10 mm, which is relatively small enough to prevent gas from being drawn into the molten metal when it flows out.
この状態で、シリンダ６を作用させ、弁棒５を
上げて溶湯口４を開き、ラドル１内の溶湯を射出
スリーブ２内に排出させ始める。この状態を第３
図ａに示す。なお、この時の、ラドル１内の溶湯
上面と射出スリーブ２内のプランジヤチツプ３上
面部に出始めた溶湯面との距離差、すなわち、ヘ
ツドを、H1として示すが、ラドル１はそのまま
の位置で、わずかの間、静止させておく。 In this state, the cylinder 6 is operated, the valve stem 5 is raised to open the molten metal spout 4, and the molten metal in the ladle 1 begins to be discharged into the injection sleeve 2. This state is the third
Shown in Figure a. At this time, the distance difference between the upper surface of the molten metal in the ladle 1 and the surface of the molten metal that has started to appear on the upper surface of the plunger tip 3 in the injection sleeve 2, that is, the head, is shown as H1 , but the ladle 1 remains as it is. Hold it in place for a moment.
ラドル１をそのまま静止させておけば、溶湯口
４から溶湯が順次排出され、それにしたがつて、
射出スリーブ２内の溶湯は表面層が撹拌されるこ
となく下からの新しい溶湯で徐々に押上げられ、
まもなく、射出スリーブ２内の溶湯の上面がラド
ル１下端の溶湯口４の位置よりも上に来る。この
時、ラドル１内の溶湯上面と射出スリーブ２内の
溶湯上面との間のヘツドH2は、第３図ａに示す
ようになる。 If the ladle 1 is left stationary, the molten metal will be discharged from the molten metal inlet 4 one after another, and as it does so,
The surface layer of the molten metal in the injection sleeve 2 is not stirred and is gradually pushed up by new molten metal from below.
Soon, the upper surface of the molten metal in the injection sleeve 2 will be above the position of the molten metal spout 4 at the lower end of the ladle 1. At this time, the head H2 between the upper surface of the molten metal in the ladle 1 and the upper surface of the molten metal in the injection sleeve 2 becomes as shown in FIG. 3a.
射出スリーブ２内の溶湯の上面位置がラドル１
の溶湯口４の位置よりも少し高くなれば、順次高
くなつていく射出スリーブ２内の溶湯の上面位置
を常に溶湯口４の位置よりも高い状態に保ち続け
ながら、ラドル１を上昇させ始める。 The upper surface of the molten metal in the injection sleeve 2 is at the ladle 1.
When the ladle 1 becomes a little higher than the position of the molten metal spout 4, the ladle 1 starts to rise while keeping the upper surface position of the molten metal in the injection sleeve 2, which is gradually increasing in height, always higher than the position of the molten metal spout 4.
この時のラドル１の上昇速度Ｖは、ラドル１内
の容湯の上面と射出スリーブ２内の溶湯の上面と
の間のヘツドＨが小さくなれば、ラドル１の上昇
速度が遅くなるような一定の函数からなるヘツド
−ラドル上昇速度曲線にしたがつて上昇速度にし
た。ラドル１の上昇途中の状態を第３図ｂに示
す。 The rising speed V of the ladle 1 at this time is constant such that the smaller the head H between the upper surface of the molten metal in the ladle 1 and the upper surface of the molten metal in the injection sleeve 2, the slower the rising speed of the ladle 1 becomes. The rising speed was determined according to the head-ladle rising speed curve consisting of the function . The state in which the ladle 1 is being raised is shown in FIG. 3b.
ただし、常に前記条件の下にラドル１を最後ま
で上昇させた場合、前記ヘツドＨが非常に小さく
なつたとき、溶湯口４から溶湯が出てしまうまで
の時間が多くかかるようであれば、ラドル上昇の
前半では前記したような一定の函数からなるヘツ
ド−ラドル上昇速度曲線にしたがつた上昇速度で
ラドルを上昇させるようにし、ラドル上昇の後半
では、前記ヘツド−ラドル上昇速度曲線にしたが
つた上昇速度よりも早い速度でラドルを上昇さ
せ、溶湯口４より残り少ない溶湯をさつと排出さ
せるようにすると良い。 However, if the ladle 1 is always raised to the end under the above conditions, and if the head H becomes very small and it takes a long time for the molten metal to come out from the molten metal spout 4, then the ladle In the first half of the rise, the ladle is raised at a rising speed that follows the head-ladle rising speed curve consisting of a certain function as described above, and in the second half of the rise, the ladle is raised according to the head-ladle rising speed curve. It is preferable to raise the ladle at a faster speed than the rising speed so that the remaining molten metal can be quickly discharged from the molten metal inlet 4.
ラドル１の上昇速度Ｖと前記ヘツドＨとの関係
は、例えば、第４図に示したような曲線に応じて
自動制御しうるように、ラドル駆動装置部に指令
を与えておく。なお、ヘツドＨの測定は、時間で
換算して測定しても良いし、光による測定器や電
極等を用いて測定しても良い。 A command is given to the ladle drive unit so that the relationship between the rising speed V of the ladle 1 and the head H can be automatically controlled according to, for example, a curve as shown in FIG. Note that the head H may be measured in terms of time, or may be measured using a light measuring device, electrodes, or the like.
第４図においては、ヘツドＨが、前記したよう
に、溶湯排出開始時のヘツドH1から、射出スリ
ーブ２内の溶湯上面が溶湯口４位置よりも若干上
に行つた時のヘツドH2になるまでは、ラドル１
の上昇速度Ｖ＝０として、ラドル１を停止させる
ことを示し、それ以後は、比較的に早い上昇速度
V1でラドル１を上昇させ始め、前記ヘツドＨが
小さくなればラドル１の上昇速度Ｖを徐々に小さ
くするような一定の函数からなるヘツド−ラドル
上昇速度曲線Ａにしたがつた上昇速度でラドル１
を上昇させることを示し、ヘツドＨが、H3で示
すように、ある程度小さくなつてからは、前記ヘ
ツド−ラドル上昇速度曲線Ａとは縁を切つた無関
係な状態にし、ラドル１を線Ｂで示す上昇速度Ｖ
で上昇させることを示している。勿論、ヘツドＨ
がH2になつた時、ラドル１の上昇速度Ｖを０か
らV1へいつきに上昇させることは極めて困難な
ので、ここでは、加速度を作用させうる範囲で上
昇速度を増大させる。 In FIG. 4, the head H changes from head H1 at the start of discharging the molten metal to head H2 when the upper surface of the molten metal in the injection sleeve 2 is slightly above the position of the molten metal inlet 4, as described above. Until then, Ladle 1
The rising speed V=0 indicates that the ladle 1 is to be stopped, and after that, the rising speed is relatively fast.
The ladle 1 starts to rise at V 1 , and as the head H becomes smaller, the ladle 1 starts to rise at a rising speed according to a head-ladle rising speed curve A, which is a constant function that gradually decreases the rising speed V of the ladle 1. 1
As shown by H3 , after the head H becomes small to a certain extent, the head-raddle rise speed curve A becomes unrelated, and the ladle 1 is moved along the line B. The rising speed V
This indicates that the value will be increased. Of course, head H
When becomes H2 , it is extremely difficult to suddenly increase the rising speed V of the ladle 1 from 0 to V1 , so here, the rising speed is increased within the range where acceleration can be applied.
ヘツドＨがH3になつたときの状態を第３図ｃ
に示すが、これ以降のラドル１の上昇速度は、第
４図にV2として示すように一定速度にしても良
いし、ヘツドＨの減少に応じて上昇速度を若干増
やすようにしても、減らすようにしても良い。 Figure 3c shows the state when head H becomes H3 .
However, the rising speed of the ladle 1 after this point can be kept at a constant speed as shown as V 2 in Fig. 4, or the rising speed can be slightly increased or decreased as the head H decreases. You can do it like this.
いずれにしても、給湯の最終付近でラドル１内
の溶湯が比較的に少なくなり、ヘツドＨが小さく
なつて溶湯の排出速度が遅くなつたら、ラドル１
をさつと上げれば、溶湯を早く排出し、給湯時間
をその分だけ短縮することができる。この時は、
ヘツドＨが小さいので、溶湯はほとんど空気を巻
込まない。 In any case, if the molten metal in the ladle 1 becomes relatively small near the end of hot water supply, the head H becomes small and the molten metal discharge speed becomes slow, then the ladle 1
By raising the temperature quickly, the molten metal can be discharged quickly and the hot water supply time can be shortened accordingly. At this time,
Since the head H is small, the molten metal hardly entrains air.
なお、給湯の最終付近でラドル１の上昇速度を
ある程度早くすれば、給湯の最終状態では、ラド
ル１下端の溶湯口４が射出スリーブ２内の溶湯の
上面よりも若干上に行く場合も生じるが、それは
実用上さしつかえがない。 Note that if the rising speed of the ladle 1 is increased to a certain extent near the end of hot water supply, the molten metal inlet 4 at the lower end of the ladle 1 may rise slightly above the top surface of the molten metal in the injection sleeve 2 at the final state of hot water supply. , which is practically unavoidable.
このようにラドル１を上昇させ、ラドル１内の
溶湯の排出が終れば、ラドル１を射出スリーブ２
の外まで引続き移動させ、給湯を終る。 When the ladle 1 is raised in this way and the molten metal in the ladle 1 has been discharged, the ladle 1 is moved up to the injection sleeve 2.
continue to move outside the room and finish hot water supply.
射出スリーブ２内への給湯が終われば、射出ス
リーブ２とプランジヤチツプ３を図示していない
金型部まで移動させて射出動作を行う。 When the supply of hot water into the injection sleeve 2 is completed, the injection sleeve 2 and the plunger tip 3 are moved to a mold section (not shown) and an injection operation is performed.
なお、前記実施例においては、竪型ダイカスト
の射出スリーブ２内に溶湯を供給する例を示した
が、これは横型ダイカストの射出スリーブ内に溶
湯を供給する場合にも利用できる。その場合に
は、射出スリーブの上部の給湯口からそう入され
たラドル１の下端溶湯口４は、射出スリーブ内の
底面のすぐ上に位置させることになる。 In the above embodiment, an example was shown in which molten metal is supplied into the injection sleeve 2 of a vertical die-casting machine, but this can also be used when supplying molten metal into the injection sleeve of a horizontal die-casting machine. In that case, the lower end melt spout 4 of the ladle 1, which is inserted through the hot water inlet at the top of the injection sleeve, will be located just above the bottom surface within the injection sleeve.
このように、本発明においては、下部を伸ばし
て溶湯の落下距離を小さくしうるラドルを用い、
特許請求の範囲に記載したような方法で給湯を行
うようにしたので、ラドル内の溶湯をラドル下端
部から射出スリーブ内に順次静かに出しながら給
湯することになる。 In this way, the present invention uses a ladle that can extend the lower part to reduce the falling distance of the molten metal.
Since hot water is supplied by the method described in the claims, the molten metal in the ladle is gradually and quietly discharged from the lower end of the ladle into the injection sleeve.
しかも、ラドル内の溶湯の上面と射出スリーブ
内の溶湯の上面との間のヘツドが小さくなれば、
ラドルの上昇速度が遅くなるような所定の函数か
らなるヘツド−ラドル上昇速度曲線にしたがつた
上昇速度でラドルを上昇させるようにしたので、
ラドル内に溶湯がたくさんあつて、溶湯が早く排
出されるときは、ラドルを比較的に早く上昇させ
せ、ラドル内の溶湯の量が徐々に減つて溶湯の排
出速度が小さくなれば、ラドルの上昇速度をそれ
に応じて徐々に小さくするようにすることがで
き、常に同じような状態で給湯することができ
る。 Moreover, if the head between the top surface of the molten metal in the ladle and the top surface of the molten metal in the injection sleeve becomes smaller,
Since the ladle is raised at a rising speed that follows a head-raddle rising speed curve consisting of a predetermined function that slows down the rising speed of the ladle,
When there is a lot of molten metal in the ladle and the molten metal is discharged quickly, the ladle can be raised relatively quickly, and if the amount of molten metal in the ladle gradually decreases and the molten metal discharge speed becomes slow, the ladle can be raised relatively quickly. The rising speed can be gradually reduced accordingly, and hot water can always be supplied in the same state.
したがつて、給湯時に溶湯が射出スリーブ内で
渦を巻くこともなく、溶湯が空気にふれるのも少
なく、空気の巻き込みもなく、酸化アルミニウム
などもほとんど生じない。また、溶湯を静かに排
出するので、湯温の低下も比較的に少ない。そし
て、これらのことにより、巣のない良品質の射出
製品を得ることができる。 Therefore, the molten metal does not swirl inside the injection sleeve during hot water supply, the molten metal rarely comes into contact with air, there is no entrainment of air, and almost no aluminum oxide is generated. Furthermore, since the molten metal is discharged quietly, there is relatively little drop in the temperature of the molten metal. By doing so, it is possible to obtain a high-quality injection product free of cavities.
また、前記ヘツド−ラドル上昇速度曲線にした
がつてラドルを上昇させるようにしたので、給湯
時間もある程度短縮することができる。 Further, since the ladle is raised according to the head-ladle rising speed curve, the hot water supply time can be shortened to some extent.
また、ラドル上昇の前半では、前記所定の函数
からなるヘツド−ラドル上昇速度曲線にしたがつ
た上昇速度でラドルを上昇させるようにし、ラド
ル上昇の後半では、前記ヘツド−ラドル上昇速度
曲線にしたがつた上昇速度よりも早い速度でラド
ルを上昇させるようにしておけば、給湯の最終付
近でラドル内の溶湯量が減り、前記ヘツドが小さ
くなり、とかく溶湯の排出に時間がかかりがちな
のを防ぐことができ、給湯時間をより一層短縮す
ることができる。 Further, in the first half of the ladle rising, the ladle is raised at a rising speed according to the head-ladle rising speed curve formed by the predetermined function, and in the second half of the ladle rising, the ladle is raised at a rising speed according to the head-ladle rising speed curve formed by the above-mentioned predetermined function. By raising the ladle at a faster rate than the rising speed of the drip, the amount of molten metal in the ladle decreases near the end of hot water supply, and the head becomes small, which prevents the tendency to take a long time to discharge the molten metal. This allows the hot water supply time to be further shortened.
なお、ラドル内に炉内の溶湯を入れる場合は、
ラドルの下端部の溶湯口を炉内溶湯の表面層酸化
膜の下まで入れた後、溶湯口を開いて溶湯を入れ
ることができるので、ラドル内に前記酸化膜が入
ることもない。 In addition, when putting the molten metal in the furnace into the ladle,
After the molten metal inlet at the lower end of the ladle is introduced to below the surface layer oxide film of the molten metal in the furnace, the molten metal can be opened and the molten metal can be introduced, so that the oxide film does not enter into the ladle.
第１図は本発明に類した従来の方法を示す説明
図、第２図は本発明の方法を実施するための装置
の１実施例を示す縦断面図、第３図ａ，ｂ，ｃは
本発明の方法における作動順序を示す説明図、第
４図は本発明の方法によるヘツド−ラドル上昇速
度曲線の１例を示す線図である。
１……ラドル、２……射出スリーブ、３……プ
ランジヤチツプ、４……溶湯口、５……弁棒、６
……シリンダ、１２……ラドル搬送装置。
Fig. 1 is an explanatory diagram showing a conventional method similar to the present invention, Fig. 2 is a longitudinal sectional view showing one embodiment of an apparatus for carrying out the method of the present invention, and Figs. 3 a, b, and c are FIG. 4 is a diagram showing an example of a head-ladle rising speed curve according to the method of the present invention. 1... Ladle, 2... Injection sleeve, 3... Plunger tip, 4... Melt spout, 5... Valve stem, 6
... Cylinder, 12 ... Ladle conveyance device.
Claims (1)
おり、かつ、下端部に設けた溶湯口を開閉しうる
ラドルを用い、このラドル内に溶湯を入れて溶湯
口を閉じた状態で、このラドルの溶湯口のある下
端部を射出スリーブ内の下方までそう入し、この
状態で溶湯口を開いてラドル内の溶湯を射出スリ
ーブ内で排出させ始め、ラドルから排出された排
出スリーブ内の溶湯の上面がラドルの前記溶湯口
の位置よりも高くなつてからラドルを射出スリー
ブ外まで上昇させるようにしたダイカストマシン
における自動給湯方法において、ラドル上昇の前
半では、ラドル内の溶湯の上面と射出スリーブ内
の溶湯の上面との間のヘツドが小さくなれば、ラ
ドルの上昇速度が遅くなるような所定の函数から
なるヘツド−ラドル上昇速度曲線にしたがつた上
昇速度でラドルを上昇させるようにし、ラドル上
昇の後半では、前記ヘツド−ラドル上昇速度曲線
にしたがつた上昇速度よりも早い速度でラドルを
上昇させるようにしたダイカストマシンにおける
自動給湯方法。1 Using a ladle whose lower part extends so that it can be inserted into the injection sleeve and which can open and close the molten metal inlet provided at the lower end, pour the molten metal into this ladle and close the molten metal inlet. Insert the lower end of the molten metal into the injection sleeve until it reaches the bottom of the injection sleeve. In this state, open the molten metal spout and start discharging the molten metal in the ladle into the injection sleeve. In an automatic hot water supply method for a die casting machine in which the ladle is raised to the outside of the injection sleeve after the upper surface of the ladle is higher than the position of the molten metal inlet, in the first half of the ladle rising, the upper surface of the molten metal in the ladle and the inside of the injection sleeve are The ladle is raised at a rising speed according to a head-ladle rising speed curve consisting of a predetermined function such that as the head between the top surface of the molten metal and the top surface of the ladle becomes smaller, the rising speed of the ladle becomes slower. In the second half of the above, there is provided an automatic hot water supply method in a die-casting machine, in which the ladle is raised at a faster rate than the rate of rise according to the head-ladle rising speed curve.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2697183A JPS59153563A (en) | 1983-02-22 | 1983-02-22 | Automatic charging method of molten metal |
| US06/508,810 US4505307A (en) | 1982-06-29 | 1983-06-28 | Method of pouring molten metal into injection sleeves of die cast machines |
| DE19833323465 DE3323465A1 (en) | 1982-06-29 | 1983-06-29 | METHOD FOR POURING MOLTEN METAL INTO THE CASTING CHAMBER OF A PRESSURE CASTING MACHINE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2697183A JPS59153563A (en) | 1983-02-22 | 1983-02-22 | Automatic charging method of molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59153563A JPS59153563A (en) | 1984-09-01 |
| JPH0229423B2 true JPH0229423B2 (en) | 1990-06-29 |
Family
ID=12208038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2697183A Granted JPS59153563A (en) | 1982-06-29 | 1983-02-22 | Automatic charging method of molten metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59153563A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62259655A (en) * | 1986-04-30 | 1987-11-12 | Ube Ind Ltd | Automatic pouring method for die casting machine |
| JP2649841B2 (en) * | 1989-05-01 | 1997-09-03 | 宇部興産株式会社 | Automatic water heater |
| CA2019444C (en) * | 1989-06-23 | 1995-05-16 | Toyoaki Ueno | Method and apparatus for automatically supplying molten metal for die casting machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5089219A (en) * | 1973-12-12 | 1975-07-17 | ||
| JPS5249404A (en) * | 1975-10-18 | 1977-04-20 | Shinko Electric Co Ltd | Brushless synchronous induction motor |
| JPS5647252A (en) * | 1979-09-22 | 1981-04-28 | Ube Ind Ltd | Method of pouring molten metal into vertical sleeve |
| JPS594959A (en) * | 1982-06-29 | 1984-01-11 | Ube Ind Ltd | Automatic hot water supply method in die casting machine |
-
1983
- 1983-02-22 JP JP2697183A patent/JPS59153563A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59153563A (en) | 1984-09-01 |
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