JP2000024767A - Molten metal supplying system for casting apparatus - Google Patents
Molten metal supplying system for casting apparatusInfo
- Publication number
- JP2000024767A JP2000024767A JP10198549A JP19854998A JP2000024767A JP 2000024767 A JP2000024767 A JP 2000024767A JP 10198549 A JP10198549 A JP 10198549A JP 19854998 A JP19854998 A JP 19854998A JP 2000024767 A JP2000024767 A JP 2000024767A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- molten metal
- tip
- hot water
- water supply
- 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.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 54
- 239000002184 metal Substances 0.000 title claims abstract description 54
- 238000005266 casting Methods 0.000 title claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000007246 mechanism Effects 0.000 claims description 15
- 230000002950 deficient Effects 0.000 abstract description 4
- 239000000243 solution Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- 230000005674 electromagnetic induction Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000004512 die casting Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はダイカストマシンや
機械式鋳造機の注湯システムに関わり、特に、注湯時に
発生するエア巻き込みを防止できるようにした新しい注
湯システムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouring system for a die casting machine or a mechanical casting machine, and more particularly to a new pouring system capable of preventing air entrapment generated during pouring.
【０００２】[0002]
【従来の技術】現在のダイカストマシン、機械式鋳造機
における注湯システムについて、図５〜図７により説明
する。図５は手くみ及び一般的自動給湯機による注湯シ
ステムを説明する図である。鋳造装置本体は、固定ダイ
プレート１に取付けられた固定型３と、可動ダイプレー
ト２に取付けられた可動型４とからなっている。固定型
３、可動型４の対向面に形成されるキャビティ７に溶湯
金属を供給するため、固定ダイプレート１、固定型３を
通してスリーブ５、型スリーブ６が形成され、型スリー
ブ６先端の分流子６ａ、ランナ６ｂを通ってキャビティ
７に連通している。スリーブ５への給湯は、自動給湯機
と呼ばれる装置のひしゃく部分であるラドル９によっ
て、図示しない溶解炉から溶湯金属をくみ出し、スリー
ブ５に形成された給湯口５ａから行われる。ラドル９は
ロボットアームの先端にひしゃくを設けたもので、図示
しない制御装置により制御されて、スリーブ内への給湯
動作を行う。チップ８はスリーブ内に給湯された溶湯金
属１０をキャビティ７に押し込むためのピストンであ
る。2. Description of the Related Art A current pouring system in a die casting machine or a mechanical casting machine will be described with reference to FIGS. FIG. 5 is a view for explaining a pouring system using hand-drawing and a general automatic water heater. The casting apparatus main body includes a fixed mold 3 attached to the fixed die plate 1 and a movable mold 4 attached to the movable die plate 2. In order to supply molten metal to the cavity 7 formed on the opposing surface of the fixed mold 3 and the movable mold 4, a sleeve 5 and a mold sleeve 6 are formed through the fixed die plate 1 and the fixed mold 3. 6a and the runner 6b communicate with the cavity 7. Hot water is supplied to the sleeve 5 from a melting furnace (not shown) by a ladle 9 which is a ladle part of an apparatus called an automatic water heater, and is supplied from a hot water supply port 5 a formed in the sleeve 5. The ladle 9 is provided with a scoop at the end of the robot arm, and is controlled by a control device (not shown) to perform a hot water supply operation into the sleeve. The tip 8 is a piston for pushing the molten metal 10 supplied into the sleeve into the cavity 7.
【０００３】次に作用を説明すると、ラドル９でスリー
ブ５内に溶湯金属１０を３０％程度満たし、次いで、チ
ップ８を押すことにより、分流子６ａで整流してランナ
６ｂからキャビティ７内に溶湯金属を押し込み、可動ダ
イプレート２側より可動型４を固定型３に対して押しつ
けて型締めし、キャビティ内の金属が固化した時点で可
動型を後退させて、鋳造製品がとりだされる。Next, the operation will be described. The sleeve 5 is filled with about 30% of the molten metal 10 by the ladle 9, and then the tip 8 is pushed to rectify the flow by the shunt 6a and flow into the cavity 7 from the runner 6b. The metal is pushed in, the movable die 4 is pressed against the fixed die 3 from the movable die plate 2 side, and the mold is clamped. When the metal in the cavity is solidified, the movable die is retracted, and the cast product is taken out.
【０００４】図６は電磁誘導ポンプ式注湯システムを説
明する図であり、図５と同一参照数字は同一内容を示し
ている。この例は電磁誘導ポンプ１１を用いてスリーブ
５内へ給湯するものであり、そのためにストーク（パイ
プ）１３をスリーブから溶湯金属を収納した保持炉１２
まで延ばし、電磁誘導ポンプ１１のポンプ動作で溶湯金
属をスリーブ内に供給する。そしてチップ８によりスリ
ーブ内の溶湯金属が押し出されてキャビティに注湯され
る過程で、ストーク１３のスリーブへの開口部分が閉鎖
された時に、電磁誘導ポンプをＯＦＦにしてストーク１
３内の溶湯金属を保持炉１２内へ落とすようにしてい
る。その他の構成は図５の場合と同じである。FIG. 6 is a diagram for explaining an electromagnetic induction pump type pouring system, and the same reference numerals as those in FIG. 5 indicate the same contents. In this example, hot water is supplied into the sleeve 5 by using the electromagnetic induction pump 11, and for this purpose, a stalk (pipe) 13 is held in a holding furnace 12 containing molten metal from the sleeve.
And the molten metal is supplied into the sleeve by the pump operation of the electromagnetic induction pump 11. In the process in which the molten metal in the sleeve is extruded by the tip 8 and poured into the cavity, when the opening of the Stoke 13 to the sleeve is closed, the electromagnetic induction pump is turned off and the Stoke 1 is turned off.
The molten metal in 3 is dropped into the holding furnace 12. Other configurations are the same as those in FIG.
【０００５】図７は炉内加圧式注湯システムを説明する
図で、基本的構成は図６の場合と同じである。この例に
おいては、加圧ガスタンク１４より炉１２内を加圧し、
この圧力でストーク１３を通して溶湯金属をスリーブ内
へ供給している。そしてチップ８によりスリーブ内の溶
湯金属を押し出す過程で、ストークの先端開口部が閉鎖
された時に加圧を停止し、ストーク内の溶湯金属を保持
炉１２内へ落とすようにしている。FIG. 7 is a diagram for explaining a furnace pressure-type pouring system. The basic configuration is the same as that of FIG. In this example, the inside of the furnace 12 is pressurized from the pressurized gas tank 14,
The molten metal is supplied into the sleeve through the stalk 13 at this pressure. In the process of pushing out the molten metal in the sleeve by the tip 8, the pressurization is stopped when the opening at the tip of the stalk is closed, and the molten metal in the stalk is dropped into the holding furnace 12.
【０００６】[0006]
【発明が解決しようとする課題】このような従来の注湯
システムでは、注湯するスリーブ内にはすでにエアが充
満している状態であり、そこに溶湯金属を充填するた
め、溶湯金属と共に、エアを巻き込んでキャビティ内に
進入してしまうという現象を防止することができず、こ
れが成形品（鋳造品）の不良の発生原因となっている。
エアを巻き込まないために、スリーブ内を溶湯金属で満
杯にすると、チップで溶湯金属を押し込む時の抵抗が大
きくなり過ぎて注湯に時間がかかり、金属が固まり始め
てしまい、また溶湯金属が溢れ出るという問題もあるた
め、現在ではスリーブ内の充填率はせいぜい３０％程度
である。さらに従来の注湯システムでは、スリーブ内へ
の溶湯金属供給のために高圧が必要であり、またスリー
ブ全長にわたってチップを押し込んでいくため時間がか
かり、冷却して溶湯金属が固まらないような高温、高速
動作が必要であった。In such a conventional pouring system, the sleeve to be poured is already filled with air, and the molten metal is filled together with the molten metal. It is impossible to prevent the phenomenon that air is drawn into the cavity and enters the cavity, and this is a cause of defective molded products (cast products).
If the inside of the sleeve is filled with molten metal to prevent air from being entrained, the resistance when pushing the molten metal with the tip becomes too large and the pouring takes time, the metal starts to solidify, and the molten metal overflows At present, the filling rate in the sleeve is at most about 30%. Further, in the conventional pouring system, high pressure is required to supply the molten metal into the sleeve, and it takes time to push the chip over the entire length of the sleeve, and it takes a long time to cool the molten metal so that the molten metal does not solidify. High-speed operation was required.
【０００７】本発明は上記課題を解決するためのもの
で、スリーブ内にエアもしくはその他のガスが全くない
状態を作りだし、鋳造品の不良原因であるガスの巻き込
みをなくすと共に、低温、低圧、低速での鋳造を可能に
することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and creates a state in which there is no air or other gas in a sleeve. It is intended to enable casting in the steel.
【０００８】[0008]
【課題を解決するための手段】本発明の鋳造装置の給湯
システムは、溶湯金属が収納された炉から延びるストー
クを通して固定ダイプレート及び固定型に形成されたス
リーブ内に溶湯金属を導き、固定ダイプレートと可動ダ
イプレート間に取付けられた固定型と可動型間に形成さ
れ、前記スリーブに連通するキャビティ内に前記溶湯金
属を注湯するシステムにおいて、前記スリーブ内を摺動
可能な射出チップと、前記可動型内に形成され、前記ス
リーブと整合するシリンダ及びスリーブにわたって摺動
可能な補助チップと、前記射出チップ及び補助チップを
駆動制御する制御手段とを備え、前記射出チップ及び補
助チップを密着させた位置から両者を引き離して両チッ
プ間に真空空間を形成し、その負圧力により前記ストー
クを通して炉内の溶湯金属を両チップ間に吸引し、吸引
した溶湯金属をキャビティ内に注湯することを特徴とす
る。According to the present invention, there is provided a hot water supply system for a casting apparatus, wherein a molten metal is guided into a stationary die plate and a sleeve formed in a stationary mold through a stalk extending from a furnace in which the molten metal is stored. In a system for pouring the molten metal into a cavity formed between a fixed mold and a movable mold attached between a plate and a movable die plate and communicating with the sleeve, an injection tip slidable in the sleeve; An auxiliary chip formed in the movable mold and slidable over a cylinder and a sleeve that aligns with the sleeve, and a control unit that controls the driving of the injection chip and the auxiliary chip. A vacuum space is formed between both chips by separating them from the position, and the negative pressure inside the furnace through the stalk. Sucking the hot metal between the two chips, characterized by pouring the sucked molten metal in the cavity.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態につい
て説明する。図１は本発明の注湯システムを説明する
図、図２は装置全体図、図３はチップ潤滑装置の概略
図、図４は本発明の注湯システムの動作を説明するため
の図である。図１において、固定型２０にはスリーブ２
２が貫通して形成され、スリーブ内はプランジャーロッ
ド２３で駆動される射出チップ２４が摺動できるように
なっている。可動型２１内にはスリーブ２２と整合し、
型内補助チップ２７がスリーブ２２と跨がって摺動でき
るシリンダ２５が設けられ、その奥に型内補助チップ駆
動シリンダ２６が設けられてチップ２７を駆動できるよ
うになっている。固定型２０と可動型２１間に形成され
るキャビティ２８はランナ２９を通してスリーブ２２と
シリンダ２５に連通している。Embodiments of the present invention will be described below. FIG. 1 is a diagram illustrating a pouring system of the present invention, FIG. 2 is an overall view of the device, FIG. 3 is a schematic diagram of a chip lubricating device, and FIG. 4 is a diagram for explaining the operation of the pouring system of the present invention. . In FIG.
2 is formed so as to penetrate, so that the injection tip 24 driven by the plunger rod 23 can slide in the sleeve. In the movable mold 21, it is aligned with the sleeve 22,
A cylinder 25 that allows the in-mold auxiliary chip 27 to slide over the sleeve 22 is provided, and an in-mold auxiliary chip drive cylinder 26 is provided behind the cylinder 25 so that the chip 27 can be driven. A cavity 28 formed between the fixed mold 20 and the movable mold 21 communicates with the sleeve 22 and the cylinder 25 through a runner 29.
【００１０】金型の下方に配置されるアルミ合金、マグ
ネシウム、亜鉛合金、真ちゅう等の溶湯金属３１が収納
される炉３０からはストーク３２が固定型２０まで伸
び、ストーク３２とスリーブ２２は伸縮可能なベローズ
からなるストーク昇降装置３４によってジョイントされ
ている。このベローズは金型交換時、ストーク交換およ
び点検時に下降させ、機械装置外に炉を出す場合に使用
し、注湯時においては、スリーブとのシール保持として
作用するものである。なお、ストーク交換等を行う必要
上、固定型２０は二重構造で分割可能にして交換作業が
やり易いようにしている。ストーク３２内を通る溶湯金
属は一定の溶解温度を必要とするため、炉３０内の熱気
が先端まで伝わるように空間を形成し、炉内熱を利用し
て凝固しないようにしている。もちろんストーク３２の
外周に電気ヒータを巻いて保温することも可能である。
ストーク３２とスリーブ２２とのジョイント部は、スペ
ーサ３３によってシールされ、スペーサは窒化珪素もし
くはチタン合金材からなり、ストークを球面で受けてシ
ールする構造にしている。[0010] A stalk 32 extends from a furnace 30 in which a molten metal 31 such as an aluminum alloy, a magnesium, a zinc alloy, and brass is placed below the mold to a fixed mold 20, and the stalk 32 and the sleeve 22 can expand and contract. It is joined by a Stoke lifting / lowering device 34 composed of a bellows. The bellows is lowered when the mold is replaced, when the stalk is replaced and when the inspection is performed, and is used when the furnace is taken out of the mechanical device. When the molten metal is poured, the bellows functions as a seal holding with the sleeve. In addition, since it is necessary to perform Stoke exchange or the like, the fixed mold 20 has a double structure and can be divided so that the exchange operation can be easily performed. Since the molten metal passing through the stalk 32 requires a certain melting temperature, a space is formed so that the hot air in the furnace 30 is transmitted to the tip, and the space is not solidified by utilizing the heat in the furnace. Of course, an electric heater can be wound around the outer periphery of the Stoke 32 to keep the temperature.
The joint between the stalk 32 and the sleeve 22 is sealed by a spacer 33. The spacer is made of silicon nitride or a titanium alloy material, and has a structure in which stalk is received and sealed by a spherical surface.
【００１１】このような給湯システムの駆動機構は、図
２に示すように、制御盤および動力盤４０により動力が
伝えられ、射出機構４１により、射出チップ及び型内補
助チップが駆動されて、炉３０内の溶湯金属をチップ間
に吸引する。この状態で両チップをスリーブ内で移動さ
せ、チップ間の空間がランナ２９に連通すると、キャビ
ティ内の真空と、射出チップ２４の押し出し動作によ
り、チップ間に吸引された溶湯金属がキャビティ内に吸
引される。キャビティに注湯された溶湯金属は，型締機
構４２により、固定ダイプレート１８、可動ダイプレー
ト１９を型締めして金型２０，２１間で鋳造し、その後
型締機構４２で金型２０，２１を分離した後、押し出し
機構４３により押し出しピン（図示せず）を動作させて
製品をキャビティから取り外す構成となっている。ま
た、本発明では、真空装置及びタンク４４が設けられ、
注湯にあたってキャビティ２８、スリーブ２２、シリン
ダ２５内を真空引きし、さらに射出チップ２４と型内補
助チップ２８間に吸引した溶湯金属が、チップ移動時、
あるいは他の要因で炉３０内に落下しないように炉内に
微圧をかけるようにしている。また、必要に応じて射出
チップに高い駆動力を付与するための増圧発生装置４５
が設けられている。なお、上記射出機構４１、型締機構
４２、押し出し機構４３等は、サーボ制御により駆動す
るように構成すしてもよい。As shown in FIG. 2, in the drive mechanism of such a hot water supply system, power is transmitted by a control panel and a power panel 40, an injection mechanism 41 drives an injection chip and an in-mold auxiliary chip, and The molten metal in 30 is sucked between the chips. In this state, both chips are moved in the sleeve, and when the space between the chips communicates with the runner 29, the molten metal sucked between the chips is sucked into the cavity by the vacuum in the cavity and the pushing operation of the injection tip 24. Is done. The molten metal poured into the cavity is molded between the dies 20 and 21 by clamping the fixed die plate 18 and the movable die plate 19 by the mold clamping mechanism 42, and then the molds 20 and 21 are molded by the mold clamping mechanism 42. After separating 21 from the cavity, the product is removed from the cavity by operating an extrusion pin (not shown) by an extrusion mechanism 43. In the present invention, a vacuum device and a tank 44 are provided,
At the time of pouring, the inside of the cavity 28, the sleeve 22, and the cylinder 25 is evacuated, and the molten metal sucked between the injection tip 24 and the auxiliary tip 28 in the mold is moved when the tip moves.
Alternatively, a slight pressure is applied to the inside of the furnace so as not to fall into the furnace 30 due to other factors. Further, if necessary, a pressure increasing generator 45 for applying a high driving force to the injection tip.
Is provided. The injection mechanism 41, the mold clamping mechanism 42, the pushing mechanism 43, and the like may be configured to be driven by servo control.
【００１２】常に高温となるスリーブ内とチップの潤滑
装置については、図３に示すように、チップ２４の取付
けてあるプランジャーロッド２３内に潤滑オイル孔２３
ａを形成し、チップ後端部に取付けた潤滑補助リング２
４ａに形成した孔から、チップが後退する動作前にスリ
ーブ内に潤滑オイルを吹き出す構造にしている。また、
型内補助チップ２７の側にも同様にシリンダロッドに潤
滑オイル孔２６ａを形成し、チップ後端部から潤滑オイ
ルが吹き出すようになっている。またチップの潤滑は、
型を開いた時にチップおよび補助チップを型の外まで前
進させてチップの後端部を型表面の位置にし、潤滑オイ
ルを吹きつけてチップを後退させるようにしても良い。
また、チップ２４，２７は、それぞれロッドを通して形
成された冷却路２３ｂ，２６ｂを通して冷却水が導入さ
れて、その先端部分が冷却されるようになっている。As shown in FIG. 3, a lubricating oil hole 23 is provided in a plunger rod 23 to which a tip 24 is attached.
a, and a lubrication auxiliary ring 2 attached to the rear end of the chip
The lubricating oil is blown out into the sleeve from the hole formed in 4a before the tip is moved backward. Also,
Similarly, a lubricating oil hole 26a is formed in the cylinder rod on the side of the in-mold auxiliary chip 27 so that lubricating oil is blown out from the rear end of the chip. The lubrication of the tip
When the mold is opened, the tip and the auxiliary tip may be advanced to the outside of the mold so that the rear end of the tip is positioned at the surface of the mold, and lubricating oil may be sprayed to retract the tip.
In addition, cooling water is introduced into the chips 24 and 27 through cooling passages 23b and 26b formed through rods, respectively, so that the tips are cooled.
【００１３】次に、図４を参照して本発明のシステムの
動作について説明する。開いた固定型と可動型とを合わ
せるとき、型内補助チップ２７、射出チップ２４の先端
は、それぞれ型表面より外部に突き出た状態にしてお
き、型締めするとき両チップの面を突き合わせ、図４
（ａ）に示すように、型内補助チップ駆動シリンダ２５
の先端にある補助チップ２７をスリーブ２２内へ前進さ
せ、この同調動作として射出チップは後退し、ランナ口
を閉鎖する所定位置で両チップを停止させる。この停止
位置が給湯開始位置となる。Next, the operation of the system of the present invention will be described with reference to FIG. When the open fixed mold and the movable mold are combined, the tips of the in-mold auxiliary tip 27 and the injection tip 24 are made to protrude outward from the mold surface, and the faces of both tips are abutted when the mold is clamped. 4
As shown in FIG.
Is advanced to the inside of the sleeve 22, and as a tuning operation, the injection tip retreats and stops both tips at a predetermined position to close the runner opening. This stop position is the hot water supply start position.
【００１４】図４（ｂ）に示すように、給湯開始時、ス
リーブ２２内、シリンダ２５内、キャビティ２８内は真
空装置４４により真空引きする。なお、必要に応じてア
ルミ金属の酸化を防ぐため、不活性ガス等を入れる場合
もある。次いで、射出チップ２４をゆっくりと後退させ
ると、型内補助チップと射出チップ間に形成されるスリ
ーブ内空間は真空となり、さらに射出チップ２４が後退
してストーク３２のジョイント口を開いたときに、負圧
力により炉内の溶湯金属はストークを通して両チップ間
空間に吸い込まれて給湯動作が瞬時に行われる。射出チ
ップ２４の後退ストロークは、給湯量に応じて設定され
る。補助チップ２７と射出チップ２４との間に充填され
た溶湯金属を保持しながら、射出チップ２４は前進動作
となり、これの同調動作として補助チップ２７の後退動
作が行われる。これらの同調動作は射出機構４１により
駆動制御される。この時、両チップ間の空間に保持され
る溶湯金属が炉３０内に逆流しないように射出チップ２
４がストーク３２のジョイント口を閉じるまで、炉内は
タンク４４に微加圧制御され、このとき両チップが可動
型２１方向に移動するとき、キャビティ、スリーブ、シ
リンダ内の真空引きは停止する。As shown in FIG. 4B, at the start of hot water supply, the inside of the sleeve 22, the inside of the cylinder 25, and the inside of the cavity 28 are evacuated by the vacuum device 44. If necessary, an inert gas or the like may be added to prevent oxidation of the aluminum metal. Subsequently, when the injection tip 24 is slowly retracted, the space in the sleeve formed between the auxiliary tip in the mold and the injection tip is evacuated, and when the injection tip 24 is retracted to open the joint port of the stalk 32, The molten metal in the furnace is sucked into the space between both chips through the stalk by the negative pressure, and the hot water supply operation is performed instantaneously. The retraction stroke of the injection tip 24 is set according to the amount of hot water supply. The injection tip 24 moves forward while holding the molten metal filled between the auxiliary tip 27 and the injection tip 24, and the auxiliary tip 27 moves backward as a tuning operation. The driving of these tuning operations is controlled by the injection mechanism 41. At this time, the injection tip 2 is held so that the molten metal held in the space between the two tips does not flow back into the furnace 30.
Until 4 closes the joint port of the Stoke 32, the inside of the furnace is subjected to slight pressurization control to the tank 44. At this time, when both chips move toward the movable mold 21, the evacuation of the cavity, the sleeve, and the cylinder is stopped.
【００１５】次いで、図４（ｃ）に示すように、型内補
助チップ２７がランナ端部まで来た時に停止させ、射出
チップ２４を駆動することによりキャビティ２８内の真
空により、両チップ間に保持されていた溶湯金属はキャ
ビティ内に吸引される。この時、キャビティへの注湯を
速めるため射出チップ２４の動きを加速するようにして
もよい。注湯が完了し、成形、冷却した後、金型２０，
２１は開かれる。この時、射出チップ２４を動かしてス
リーブ内に凝固した金属を押し出した後、停止させる。
なお、補助チップ、射出チップの駆動は電動サーボ、あ
るいは油圧サーボ制御により、同調動作をさせることが
好ましいが、一般的な油圧制御も可能である。Next, as shown in FIG. 4C, when the in-mold auxiliary chip 27 reaches the end of the runner, it is stopped, and by driving the injection tip 24, the vacuum in the cavity 28 causes a gap between the two chips. The retained molten metal is sucked into the cavity. At this time, the movement of the injection tip 24 may be accelerated in order to accelerate the pouring into the cavity. After pouring is completed, molding and cooling, the mold 20,
21 is opened. At this time, the injection tip 24 is moved to extrude the solidified metal into the sleeve and then stopped.
It is preferable that the auxiliary tip and the injection tip be driven in synchronization by electric servo control or hydraulic servo control, but general hydraulic control is also possible.
【００１６】このように補助チップ、射出チップを用
い、チップ間に形成される真空空間に炉内の溶湯金属を
吸引するので、エアを全く巻き込まずに注湯動作を完了
することができる。また、従来のように長いスリーブを
通して注湯しないため、溶湯金属が温度低下を起こすこ
とがなく、今までの鋳造機で必要とされていた高速高圧
の動作が不要となるため、低圧、低速による鋳造が可能
となり、従来不可能とされた特殊機械でしか製作できな
かった部品の鋳造も可能である。例えば、アルミ等の場
合には、従来７００℃程度に加熱して行っており、この
温度では酸化しやすくなると共に、金型の損傷が起きる
のに対して、本発明によれば、格段に低い温度、例えば
アルミが液相を呈する５８０℃程度での鋳造が可能とな
り、鉄との反応がなく、金型を傷めないため、金型寿命
を延ばすことも可能となる。また本発明のチップ動作
は、低速が可能で０．０１ｍ／ｓ〜１．０ｍ／ｓ程度を
基本動作とするが、これ以外にも一般に行われている
０．３ｍ／ｓ〜２ｍ／ｓ程度でも可能である。すなわ
ち、本発明では、低速、低圧も可能であると共に、高
速、高圧にも対応可能である。Since the molten metal in the furnace is sucked into the vacuum space formed between the chips by using the auxiliary chip and the injection chip, the pouring operation can be completed without involving any air. In addition, since the molten metal is not poured through a long sleeve as in the conventional case, the molten metal does not drop in temperature, and the high-speed and high-pressure operation that has been required in conventional casting machines is not required. Casting is possible, and it is also possible to cast parts that could only be manufactured with special machines that were previously impossible. For example, in the case of aluminum or the like, the heating is conventionally performed at about 700 ° C., and at this temperature, the mold is easily oxidized and the mold is damaged. Casting at a temperature of, for example, about 580 ° C. in which aluminum exhibits a liquid phase becomes possible, there is no reaction with iron, and the mold is not damaged, so that the mold life can be extended. The basic operation of the chip operation of the present invention is about 0.01 m / s to 1.0 m / s, which can be performed at a low speed, but it is also generally performed about 0.3 m / s to 2 m / s. But it is possible. That is, in the present invention, low speed and low pressure are possible, and high speed and high pressure are also applicable.
【００１７】また、従来固定であったゲート、湯口面積
が補助チップの後退位置を可変とすることにより、その
断面積を変化させることが可能となり、ゲート速度を自
由に変化させることができる。従って、型が変わり、キ
ャビティの容積が変わっても型内補助チップの位置を変
えることにより、自由に対応することができる。また、
従来、製品まで必要とされたランナをなくしたり、あっ
ても従来より十分短くレイアウトすることが可能であ
る。Further, by changing the retracted position of the auxiliary tip for the gate and the sprue area which are conventionally fixed, the cross-sectional area can be changed, and the gate speed can be freely changed. Therefore, even if the mold changes and the volume of the cavity changes, the position of the auxiliary tip in the mold can be freely changed by changing the position. Also,
Conventionally, it is possible to eliminate the runner required for the product, or to lay out the layout sufficiently shorter than before.
【００１８】[0018]
【発明の効果】以上のように本発明の注湯システムは、
従来問題とされた鋳造品の不良原因であるガスの巻き込
み等、スリーブ内のエアもしくはガスによる要因を完全
に取り除くことができ、不良率の低下を実現することが
できる。従来、いかなる方法であってもスリーブ内のガ
スを除去できないため、真空注湯や、局部加圧ＧＦ法、
その他注湯方法もいろいろ検討されたが、本発明のよう
に無ガス空間を作りだしての注湯システムは皆無であ
る。また、低速で注湯、鋳造が基本的動作であるが、従
来の低速鋳造方法よりはるかに品質の良いものが成形で
き、また従来必須であった増圧装置も不要とすることが
でき、電動／油圧サーボ制御により、より確実な給湯量
と成形制御が可能となる。また、今まで、給湯に対して
難しいとされていたマグネシウム等の合金の注湯も可能
になる。また、今までのダイカスト鋳造工場の作業環境
も改善され、クリーンな鋳造工場にすることができ、溶
湯金属によって不可能であった給湯も可能となり、製品
の範囲は現市場より大幅にアップとなる。また、高圧で
の成形が不要となるため、型締機構も大幅に小さくな
り、現在のマシンサイズの鋳造品から倍の大きさ（可鋳
面積で）のものが可能となる。これにより、金型でのト
ラブルの原因の１つであった焼きつきが減少し、金型寿
命を延ばすことも可能となる。As described above, the pouring system of the present invention
Factors caused by air or gas in the sleeve, such as entrainment of gas, which is a cause of defective cast products, which has been a problem in the past, can be completely removed, and a reduction in the defective rate can be realized. Conventionally, since the gas in the sleeve cannot be removed by any method, vacuum pouring, local pressurized GF method,
Various other pouring methods have been studied, but there is no pouring system for creating a gas-free space as in the present invention. In addition, pouring and casting at low speeds are the basic operations. However, it is possible to mold much higher quality than the conventional low-speed casting method, and it is not necessary to use a pressure booster, which was required in the past. / Hydraulic servo control enables more reliable hot water supply and forming control. Also, pouring of alloys such as magnesium, which has been considered difficult to supply hot water, becomes possible. In addition, the work environment of the conventional die casting factory has been improved, it can be a clean casting factory, and hot water supply that was impossible with molten metal is also possible, and the range of products will be significantly higher than the current market . In addition, since high-pressure molding is not required, the mold clamping mechanism is significantly reduced, and a product having a size twice as large as that of a cast product of the current machine size (with a castable area) is possible. As a result, seizure, which is one of the causes of trouble in the mold, is reduced, and the life of the mold can be extended.
【図１】 本発明の注湯システムを説明する図である。FIG. 1 is a diagram illustrating a pouring system according to the present invention.
【図２】 装置全体図である。FIG. 2 is an overall view of the apparatus.
【図３】 チップ潤滑装置の概略図である。FIG. 3 is a schematic view of a chip lubrication device.
【図４】 本発明の注湯システムの動作を説明する図で
ある。FIG. 4 is a diagram illustrating the operation of the pouring system of the present invention.
【図５】 従来の注湯システムを説明する図である。FIG. 5 is a diagram illustrating a conventional pouring system.
【図６】 従来の注湯システムを説明する図である。FIG. 6 is a diagram illustrating a conventional pouring system.
【図７】 従来の注湯システムを説明する図である。FIG. 7 is a diagram illustrating a conventional pouring system.
１８…固定ダイプレート、１９…可動ダイプレート、２
０…固定型、２１…可動型、２２…スリーブ、２３…プ
ランジャーロッド、２４…射出チップ、２５…シリン
ダ、２６…型内補助チップ駆動シリンダ、２７…型内補
助チップ、２８…キャビティ、２９…ランナ、３０…
炉、３２…ストーク、３３…スペーサ、３４…ストーク
昇降装置、４０…制御盤及び動力盤、４１…射出機構、
４２…型締機構、４３…押し出し機構、４４…真空装置
及びタンク、４５…増圧発生装置。18: fixed die plate, 19: movable die plate, 2
0: Fixed type, 21: Movable type, 22: Sleeve, 23: Plunger rod, 24: Injection tip, 25: Cylinder, 26: In-mold auxiliary tip drive cylinder, 27: In-mold auxiliary tip, 28: Cavity, 29 ... runner, 30 ...
Furnace, 32: Stoke, 33: Spacer, 34: Stoke elevating device, 40: Control panel and power panel, 41: Injection mechanism,
42: mold clamping mechanism, 43: extrusion mechanism, 44: vacuum device and tank, 45: pressure increasing generator.
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１０年８月２４日（１９９８．８．２
４）[Submission date] August 24, 1998 (1998.8.2
4)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】発明の名称[Correction target item name] Name of invention
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【発明の名称】 鋳造装置の給湯システム[Title of the Invention] Hot water supply system for casting equipment
───────────────────────────────────────────────────── フロントページの続き (72)発明者 池田孝史 兵庫県加古川市別府町新野辺北町８丁目３ −５ (72)発明者 杉原一江 兵庫県加古川市別府町別府905番地の６ ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takashi Ikeda 8-3-5 Shinnobe Kitamachi, Beppu-cho, Kakogawa-shi, Hyogo (72) Inventor Kazue Sugihara 905-6, Beppu-cho, Beppu-cho, Kakogawa-shi, Hyogo
Claims (8)
ークを通して固定ダイプレート及び固定型に形成された
スリーブ内に溶湯金属を導き、固定ダイプレートと可動
ダイプレート間に取付けられた固定型と可動型間に形成
され、前記スリーブに連通するキャビティ内に前記溶湯
金属を注湯するシステムにおいて、 前記スリーブ内を摺動可能な射出チップと、 前記可動型内に形成され、前記スリーブと整合するシリ
ンダ及びスリーブにわたって摺動可能な補助チップと、 前記射出チップ及び補助チップを駆動制御する制御手段
とを備え、 前記射出チップ及び補助チップを密着させた位置から両
者を引き離して両チップ間に真空空間を形成し、その負
圧力により前記ストークを通して炉内の溶湯金属を両チ
ップ間に吸引し、吸引した溶湯金属をキャビティ内に注
湯することを特徴とする鋳造装置の給湯システム。The molten metal is guided into a fixed die plate and a sleeve formed in a fixed die through a stalk extending from a furnace in which the molten metal is stored, and a fixed die and a movable die plate are mounted between the fixed die plate and the movable die plate. A system for pouring the molten metal into a cavity formed between molds and communicating with the sleeve, comprising: an injection tip slidable in the sleeve; and a cylinder formed in the movable mold and aligned with the sleeve. And an auxiliary chip slidable over the sleeve, and control means for driving and controlling the ejection chip and the auxiliary chip. The two separate from the position where the ejection chip and the auxiliary chip are in close contact with each other to form a vacuum space between the chips. The molten metal in the furnace is sucked between both chips through the stalk by the negative pressure, and the sucked molten metal is formed. Hot water system of the casting apparatus, characterized by pouring into the cavity.
空引きする真空装置を備えたことを特徴とする請求項１
記載の鋳造装置の給湯システム。2. A vacuum device for evacuating a cavity, a cylinder, and a sleeve.
A hot water supply system for the casting apparatus according to the above.
える炉と連通する空間を設けたことを特徴とする請求項
１記載の鋳造装置の給湯システム。3. A hot water supply system for a casting apparatus according to claim 1, wherein a space communicating with a furnace for transmitting hot air in the furnace is provided around said stalk.
ことを特徴とする請求項１記載の鋳造装置の給湯システ
ム。4. The hot water supply system for a casting apparatus according to claim 1, further comprising a pressurizing means for slightly pressurizing the furnace.
サーボ機構等からなることを特徴とする鋳造装置の給湯
システム。5. A hot water supply system for a casting apparatus, wherein said control means comprises an electric servo mechanism, a hydraulic servo mechanism and the like.
チップを、それぞれスリーブへのストークジョイント
口、スリーブとキャビティの連通口を閉鎖する位置に停
止させた後、前記射出チップを後退させ、射出チップが
前記ストーク開口を開いた時に両チップ間の負圧力で溶
湯金属を吸引することを特徴とする請求項１記載の鋳造
装置の給湯システム。6. The control means stops the injection tip and the auxiliary tip at positions where a Stoke joint port to a sleeve and a communication port between a sleeve and a cavity are closed, respectively, and then retreats the injection tip to perform injection. 2. The hot water supply system for a casting apparatus according to claim 1, wherein the molten metal is sucked by a negative pressure between the chips when the chips open the Stoke opening.
態を保持したまま補助チップ及び射出チップを可動型側
へ移動させ、前記補助チップが前記連通口を開いた時
に、負圧力と射出チップの押し出し動作により両チップ
間の溶湯金属をキャビティ内へ注湯することを特徴とす
る請求項６記載の鋳造装置の給湯システム。7. The control means moves the auxiliary tip and the injection tip to the movable mold side while maintaining the state in which the molten metal is sucked. When the auxiliary tip opens the communication port, the negative pressure and the injection tip are set. 7. The hot water supply system for a casting apparatus according to claim 6, wherein the molten metal between the two chips is poured into the cavity by the pushing operation.
応じて設定されることを特徴とする請求項６記載の鋳造
装置の給湯システム。8. The hot water supply system for a casting apparatus according to claim 6, wherein the stop position of the auxiliary chip is set according to a hot water supply amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19854998A JP3882013B2 (en) | 1998-07-14 | 1998-07-14 | Casting water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19854998A JP3882013B2 (en) | 1998-07-14 | 1998-07-14 | Casting water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000024767A true JP2000024767A (en) | 2000-01-25 |
| JP3882013B2 JP3882013B2 (en) | 2007-02-14 |
Family
ID=16393029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19854998A Expired - Fee Related JP3882013B2 (en) | 1998-07-14 | 1998-07-14 | Casting water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3882013B2 (en) |
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| DE102012203039A1 (en) | 2012-02-28 | 2013-08-29 | Markus Scherb | Two-plate metal-die-casting machine for metal casting machines into two-plate design, comprises fixedly-arranged tool clamping plate and movably-arranged tool clamping plate, and metal-melt transporting device including e.g. melt chamber |
| US8701742B2 (en) | 2012-09-27 | 2014-04-22 | Apple Inc. | Counter-gravity casting of hollow shapes |
| US8813813B2 (en) | 2012-09-28 | 2014-08-26 | Apple Inc. | Continuous amorphous feedstock skull melting |
| US8826968B2 (en) | 2012-09-27 | 2014-09-09 | Apple Inc. | Cold chamber die casting with melt crucible under vacuum environment |
| US8833432B2 (en) | 2012-09-27 | 2014-09-16 | Apple Inc. | Injection compression molding of amorphous alloys |
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1998
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