JPH02229660A - Method and device for pressure casting - Google Patents
Method and device for pressure castingInfo
- Publication number
- JPH02229660A JPH02229660A JP5078389A JP5078389A JPH02229660A JP H02229660 A JPH02229660 A JP H02229660A JP 5078389 A JP5078389 A JP 5078389A JP 5078389 A JP5078389 A JP 5078389A JP H02229660 A JPH02229660 A JP H02229660A
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- molten metal
- cavity
- actuator
- sprue hole
- 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
- 238000005266 casting Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 7
- 239000002184 metal Substances 0.000 claims abstract description 71
- 238000001514 detection method Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000004512 die casting Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、電磁ポンプ装置、空圧圧送装置およびプラン
ジャボンプ圧送装置などの溶湯充填装置により直接金型
装置に溶湯を充填し加圧鋳造する加圧鋳造方法およびそ
の装置に間する．［従来の技術］
電磁ポンプ装置、空圧圧送装置およびプランジャボンプ
圧送装置などによる溶湯充填装置で直接金型装置のキャ
ビティに溶湯を充填し加圧鋳造する加圧鋳造装置におい
ては、ダイカスト鋳造と比べて充填速度が遅いので、鋳
遺製品は空気の巻き込みが少なく巣の無い製品ができる
という特徴がある．第８図は低圧鋳造装！を示す概略断
面図であり、給湯管１２は、その下部を溶湯１４を貯留
する溶湯保持炉１３に浸漬し、その上部を金型装置１５
に装着している，３７は溶湯保持炉１３を気密に覆う気
密チャンバ、３８は空圧圧送装置である．
このような低圧ａ遣装置において、空圧圧送装置３８に
おける充填圧力は、ｌｋｒｆ／一以下と小さく、肉厚の
薄い製品の場合には、キャビティの隅々まで溶湯が充填
されないので、引け巣を発生し易く、品質の良い高強度
の鋳造製品を得ることが困難であった．
［発明が解決しようとする課題］
本発明は、上述事情に鑑みてなされたもので、従来の、
いわゆる空気の巻き込みが少なく巣の無い製品ができる
という低圧鋳造の特徴を生かし、肉厚の薄い製品の場合
でもキャビティの隅々まで溶湯を充填し、品質の良い高
強度の鋳造製品を得ることができる加圧鋳造方法および
その装置を提供することを目的とする．
［課題を解決するための手段］
前記の目的を達成するための本発明に係る加圧鋳造方法
は、溶湯充填装置で直接金型装置のキャビティに溶湯を
充填し、キャビティに溶湯を充填完了後に加圧プランジ
ャ装置を作動させて、加圧プランジャ装置の第１プラン
ジャを湯口穴に挿入して閉塞した後に溶湯充填装置の圧
送を停止し、次に加圧プランジャ装置の第２プランジャ
をキャビティ内の凝固しつつある溶湯に押し込み、高圧
を付加して塑性流動を発生させるようにしたことを特徴
としたものとする．
また、本発明に係る加圧鋳造装置は、溶湯充填装置と、
固定金型と移動金型の型分割面に垂直に固定金型に穿設
し溶湯充填装置の給湯管を接続した湯口穴と、同湯口穴
に摺動自在に嵌入して閉塞する第１プランジャおよび同
第１プランジャよりも大径で段付き一体に形成し移動金
型に摺動自在に嵌入し装着された第２プランジャを備え
、溶湯充填中は第１プランジャおよび第２プランジャを
後退させて湯口穴を開き、溶湯をキャビティに充填完了
後、第１および第２プランジャに取着したアクチュエー
タを作動させて湯口穴を閉塞する加圧プランジャ装置と
、第１プランジャのストローク位置を検知して閉塞信号
を発信する位置検出装置とからなり、閉塞信号で溶湯充
填装置を停止するとともに、アクチュエータを中間停止
しタイマーを作動し設定時間後にアクチュエータを再作
動させるか、もしくはアクチュエータを中間停止させる
ことなく連続作動させて第２プランジャを前進させて、
キャビティ内の凝固しつつある溶湯に押し込み、高圧を
付加するように梢成して成ることを特徴としたものとす
る．
また、前記加圧鋳造装置の加圧プランジャ装置を、第１
プランジャと第２プランジャを同軸二重楕遣とし、それ
ぞれに前後進するアクチュエータを具備して、溶湯をキ
ャビティに充填完了後、第１プランジャをアクチュエー
タで前進させて湯口穴を閉塞し、第１プランジャの前進
ストローク位置を位置検出手段で検知して湯口穴閉塞信
号を発信し、第１プランジャのアクチュエータを停止す
るとともに、タイマーを作動し設定時間後に第２プラン
ジャをアクチュエータで前進させてキャビティ内の凝固
しつつある溶湯に押し込み、高圧を付加するように構成
して成ることを特徴としたものとする．
また、前記加圧鋳造装置の加圧プランジャ装置を、第１
プランジャと第２プランジャを同軸二重構造とし、それ
ぞれに前後進するアクチュエータを具備して、溶湯をキ
ャビティに充填完了後、第１プランジャをアクチュエー
タで前進させて湯口穴を閉塞し、第１プランジャの前進
ストローク位置を位置検出手段で検知して湯口穴閉塞信
号を発信し、第１プランジャのアクチュエータを停止す
るとともに、タイマーを作動し設定時間後に第２プラン
ジャをアクチュエータで前進させてキャビティ内の凝固
しつつある溶湯に押し込み、高圧を付加するように構成
して成ることを特徴としたものとする．
［作 用］
前述の低圧鋳造の特徴である、溶湯充填時の空気の巻き
込みがなく巣の発生のない溶湯充填方法を採用して、溶
溝充填完了後その湯口穴を前記第１プランジャで閉塞し
、次に前記第２プランジャをキャビティ内の凝固しつつ
ある溶湯に押し込み、高圧を付加して塑性流動を発生さ
せ、いわゆるスクイズ効果を作用させて、高強度の鋳造
製品を得ることが可能となる．
［実施例］
以下、本発明の実施例を示す第１図〜第７図により詳細
に説明する．
第１図は第１の実施例で、溶湯充填装置に電磁ポンプ装
置を用いた場合で、１０は電磁ポンプ、１２は給湯管で
下端を溶湯保持炉１３の溶湯１４に浸漬し上端を金型装
置１５の固定金型１６の湯口穴１７に液密に接続し、キ
ャビティ１８に溶湯を充填するものである．
金型装置１５は、ダイカストマシンと同じ構造であり要
部を示し詳細は省略するが、１つは移動金型、２０は型
分離面である．湯口穴１７は型分離面２０に垂直に穿設
した円筒六である．２１は加圧プランジャ装置であり、
第１プランジャ２２および同第１プランジャよりも大径
で段付きに形成した第２プランジャ２３は一体のプラン
ジャになって、油圧シリンダ２４により図で上下動をす
る．なお油圧シリンダ２４の代りに他のアクチュエータ
例えば電動機、空圧シリンダ等でもよい．第１プランジ
ャ２２は湯口穴１７と同軸上に設けられ、湯口穴１７に
摺動自在に嵌入して同湯口穴１７を閉塞するようになっ
ている．
次に、本実施例の動作を説明すると、電磁ポンプ１０を
起動して溶湯の充填を開始し、コントローラ１１のタイ
マーによって溶湯の充填完了を検出して充填完了信号Ａ
を発信する．この充填完了信号Ａで油圧シリンダ２４を
作動して第１プランジャ２２を前進（図で下降）させ、
第２図のように湯口穴１７に嵌入させて同湯口穴１７を
閉塞すると共に、第１プランジャ２２の前進ストローク
位置をセンサー２５で検出して閉塞信号Ｂを発信する．
次いで、この閉塞信号Ｂで前記電磁ボンブ１０を停止し
、さらに電磁ポンプ１０の励磁電流を逆転に切換えて、
給湯管１２内の溶湯を逆流させ、湯口穴１７近傍の溶湯
を空にして湯口穴１７の溶湯の詰まりを防止することが
できる．同時に閉塞信号Ｂで油圧シリンダ２４を一時停
止し、リレーボックス２６のタイマーを作動して設定し
た時間後に油圧シリンダ２４を再作動させて第２プラン
ジャ２３を前進（図で下降）させ、凝固しつつあるキャ
ビテイ１８内の溶湯に押し込み、高圧を付加して、塑性
流動を発生させるようにするものである．なお、リレー
ボックス２６のタイマーはキャビティ１８内の溶湯の凝
固状態に合わせて設定するものである．
第２の実施例は、第１図と同じであるが、上述のような
第１プランジャを閉Ｎ信号Ｂで中間停止をさせず、３！
！！続動作とした場合である．第３図は第３の実施例で
、第１プランジャ２７と、第２プランジャ２８を同軸二
重梢遺として、相対的に摺動する構造としたものである
．２９は第１プランジャ２７の油圧シリンダ、３０は第
２プンンジャ２８の油圧シリンダでブラケット３１を介
して移動金型１９に取着されている．第１プランジャ２
７の前進ストローク位置検出手段は、前記油圧シリンダ
２９の前進限で油圧が上昇するのをプレッシャスイッチ
３２で検出するようにしても良いし、池の位置センサー
例えばプランジャロッドに施された磁気スケールに係合
する磁気抵抗素子を用いた磁気センサーとしても良い．
第１プランジャ２７を前進《図で下降）させて湯口穴１
７を閉塞すると、プレッシャスイッチ３２が閉塞信号Ｂ
を発信する．そこで第１の実施例のように電磁ボンブ１
０を停止し、あとは前述のように、電磁ポンプ１０を逆
転駆動し、湯口穴１７の近傍の溶湯を空にする．同時に
閉塞信号Ｂでリレーボックス２６のタイマーを作動させ
設定した時間後に油圧シリンダ３０を作動して、第４図
のように第２プランジャ２８を前進（図で下降）させ、
凝固しつつあるキャビティ１８内の溶湯に押し込み、高
圧を付加して塑性流動を発生させるようにするものであ
る．
第３図において、第１図と同一部材は同一符号で示し説
明を省略する．
第５図は第４の実施例で、第１プランジャと、第２プラ
ンジャを分離した場合である．第１プランジャ３３は、
湯口穴１７と同心に設けてあり油圧シリンダ３４で前後
進可能に装着されている．第２プランジャ３５は鋳造製
品の形状によって好適位置に設けてあり、油圧シリンダ
３６によって前後進可能に装着されている．
第２プランジャ３５は図示に限定するものではなく、一
つでも良いし、また複数でも良く、また、固定金型でも
良いし、一移動金型と固定金型の両方でも良い．
第６図は第１プランジャで湯口穴１７を閉塞し、第２プ
ランジャ３５を凝固しつつある溶湯に押し込んだ状態を
示している．
第５図において、第１図と同一部材は同一符号で示し説
明を省略する．
第７図は第５の実施例で、溶湯充填装置に空圧圧送装置
を用いた場合である．溶湯保持炉１３を気密チャンバ３
７に内股し加圧空気供給装置３８から加圧空気を供給し
て溶湯１４の湯面を加圧して給湯管１２から溶湯を圧送
するものである．第７図に図示以外は第１図、第３図お
よび第５図と同じであるので図示および説明を省略する
．第６の実施例は、溶湯充填装置にホットチャンバダイ
カストマシンと同様なプランジャポンプを用いた場合で
ある．溶湯充填装置以外は第１図、第３図および第５図
と同じであるので図示および説明を省略する．
［発明の効果コ
以上説明したように、本発明によれば、低圧鋳造の特徴
である、溶湯充填時の空気の巻き込みがなく巣の発生の
ない溶湯充填方法を採用して、溶湯充填完了後その湯口
穴を前記第１プランジャで閉塞し、次に前記第２プラン
ジャをキャビティ内の凝固しつつある溶湯に押し込み、
高圧を付加して塑性流動を発生させ、いわゆるスクイズ
効果を作用させて、引け巣の無い高強度の鋳造製品を得
ることができる，[Detailed Description of the Invention] [Industrial Application Field] The present invention performs pressure casting by directly filling a mold device with molten metal using a molten metal filling device such as an electromagnetic pump device, a pneumatic pump device, or a plunger bomb pump device. Learn about pressure casting methods and equipment. [Prior art] Pressure casting equipment uses a molten metal filling device such as an electromagnetic pump device, a pneumatic pressure feeding device, and a plunger bomb feeding device to directly fill the cavity of a mold device and perform pressure casting, compared to die casting. Since the filling speed is slow, the casting product is characterized by less air entrainment and a void-free product. Figure 8 shows the low pressure casting equipment! 2 is a schematic sectional view showing the lower part of the hot water supply pipe 12 in a molten metal holding furnace 13 that stores molten metal 14, and the upper part in a mold device 15.
37 is an airtight chamber that airtightly covers the molten metal holding furnace 13, and 38 is a pneumatic pressure feeding device. In such a low-pressure feeding device, the filling pressure in the pneumatic feeding device 38 is as low as lkrf/1 or less, and in the case of thin-walled products, the molten metal is not filled to every corner of the cavity, so shrinkage cavities are prevented. It was difficult to obtain high-quality, high-strength cast products. [Problem to be solved by the invention] The present invention has been made in view of the above-mentioned circumstances.
Taking advantage of the characteristics of low-pressure casting, which allows for the creation of products with less air entrainment and no cavities, it is possible to fill every corner of the cavity with molten metal, even in the case of thin-walled products, to obtain high-quality, high-strength cast products. The purpose is to provide a pressurized casting method and equipment that can be used. [Means for Solving the Problems] A pressure casting method according to the present invention for achieving the above-mentioned object is to directly fill a cavity of a mold device with a molten metal using a molten metal filling device, and after filling the cavity with the molten metal, The pressurized plunger device is operated, the first plunger of the pressurized plunger device is inserted into the sprue hole to block it, and then the pressure feeding of the molten metal filling device is stopped, and then the second plunger of the pressurized plunger device is inserted into the sprue hole. It is characterized by being forced into solidifying molten metal and applying high pressure to generate plastic flow. Further, the pressure casting device according to the present invention includes a molten metal filling device,
A sprue hole is formed in the fixed mold perpendicularly to the mold dividing surface of the fixed mold and the movable mold and connected to a hot water supply pipe of a molten metal filling device, and a first plunger that is slidably inserted into the sprue hole to close it. and a second plunger having a larger diameter than the first plunger and integrally formed with a step, and slidably fitted into the movable mold, and the first plunger and the second plunger are retracted during filling of the molten metal. After opening the sprue hole and filling the cavity with molten metal, a pressurized plunger device operates the actuators attached to the first and second plungers to close the sprue hole, and the pressurized plunger device detects the stroke position of the first plunger and closes the sprue hole. It consists of a position detection device that sends a signal, and in addition to stopping the molten metal filling device with a blockage signal, it also stops the actuator in the middle, activates a timer, and restarts the actuator after a set time, or continuously without stopping the actuator in the middle. Activate it to advance the second plunger,
It is characterized by being formed by pushing it into the solidifying molten metal in the cavity and applying high pressure. Further, the pressure plunger device of the pressure casting device is
The plunger and the second plunger are coaxial double elliptical, and each is equipped with an actuator that moves back and forth. After filling the cavity with molten metal, the first plunger is moved forward by the actuator to close the sprue hole, and the first plunger is moved forward and backward. The position of the forward stroke is detected by the position detection means and a sprue hole closing signal is sent to stop the actuator of the first plunger, and at the same time, a timer is activated and after a set time the second plunger is advanced by the actuator to solidify the inside of the cavity. It is characterized by being configured so that it is forced into the molten metal that is being melted and applies high pressure. Further, the pressure plunger device of the pressure casting device is
The plunger and the second plunger have a coaxial dual structure, and each is equipped with an actuator that moves forward and backward. After filling the cavity with molten metal, the first plunger is moved forward by the actuator to close the sprue hole, and the first plunger is moved forward and backward. The forward stroke position is detected by the position detecting means, a sprue hole closing signal is sent, the actuator of the first plunger is stopped, and a timer is activated to move the second plunger forward by the actuator after a set time to prevent solidification in the cavity. It is characterized by being configured so that it is forced into a rising molten metal and applies high pressure. [Function] Adopting the molten metal filling method that does not entrain air during molten metal filling and does not generate cavities, which is a feature of the low-pressure casting described above, the sprue hole is closed with the first plunger after filling the molten groove. Next, the second plunger is pushed into the solidifying molten metal in the cavity, and high pressure is applied to generate plastic flow, creating a so-called squeeze effect, making it possible to obtain a high-strength cast product. Become. [Example] Hereinafter, an example of the present invention will be explained in detail with reference to FIGS. 1 to 7. Figure 1 shows the first embodiment, in which an electromagnetic pump device is used as the molten metal filling device, where 10 is an electromagnetic pump, 12 is a hot water supply pipe, the lower end of which is immersed in the molten metal 14 of the molten metal holding furnace 13, and the upper end of which is placed in the mold. It is liquid-tightly connected to the sprue hole 17 of the fixed mold 16 of the device 15, and the cavity 18 is filled with molten metal. The mold device 15 has the same structure as a die-casting machine, and although the main parts are shown and the details are omitted, one is a movable mold and 20 is a mold separation surface. The sprue hole 17 is a cylindrical hole perpendicular to the mold separation surface 20. 21 is a pressurizing plunger device;
The first plunger 22 and the second plunger 23, which has a larger diameter than the first plunger and is stepped, form an integral plunger and are moved up and down by a hydraulic cylinder 24 as shown in the figure. Note that in place of the hydraulic cylinder 24, other actuators such as an electric motor, a pneumatic cylinder, etc. may be used. The first plunger 22 is provided coaxially with the sprue hole 17 and is slidably fitted into the sprue hole 17 to close the sprue hole 17. Next, to explain the operation of this embodiment, the electromagnetic pump 10 is started to start filling with molten metal, the completion of filling with molten metal is detected by the timer of the controller 11, and a filling completion signal A is sent.
Send out. This filling completion signal A operates the hydraulic cylinder 24 to move the first plunger 22 forward (downward in the figure).
As shown in FIG. 2, the first plunger 22 is inserted into the sprue hole 17 to close the sprue hole 17, and the forward stroke position of the first plunger 22 is detected by the sensor 25 and a closing signal B is transmitted.
Next, the electromagnetic bomb 10 is stopped by this blockage signal B, and the excitation current of the electromagnetic pump 10 is switched to reverse,
The molten metal in the hot water supply pipe 12 is made to flow backwards, and the molten metal near the sprue hole 17 is emptied, thereby preventing clogging of the molten metal in the sprue hole 17. At the same time, the hydraulic cylinder 24 is temporarily stopped by the blockage signal B, and the timer in the relay box 26 is activated to restart the hydraulic cylinder 24 after a set time and move the second plunger 23 forward (downward in the figure), while solidifying. It is forced into the molten metal in a certain cavity 18 and applies high pressure to generate plastic flow. The timer of the relay box 26 is set according to the solidification state of the molten metal in the cavity 18. The second embodiment is the same as that in FIG. 1, but the first plunger is not brought to an intermediate stop by the close N signal B as described above, and 3!
! ! This is the case of continuous operation. FIG. 3 shows a third embodiment, in which the first plunger 27 and the second plunger 28 are coaxial double arms and have a structure in which they slide relative to each other. 29 is a hydraulic cylinder for the first plunger 27, and 30 is a hydraulic cylinder for the second plunger 28, which are attached to the movable mold 19 via a bracket 31. 1st plunger 2
The forward stroke position detection means 7 may be configured to detect an increase in the hydraulic pressure at the forward limit of the hydraulic cylinder 29 using the pressure switch 32, or may be configured to detect an increase in the hydraulic pressure at the forward limit of the hydraulic cylinder 29 using a pressure switch 32, or a position sensor such as a magnetic scale provided on the plunger rod. A magnetic sensor using an engaging magnetoresistive element may also be used.
Move the first plunger 27 forward (downward in the figure) to open the sprue hole 1.
7 is closed, the pressure switch 32 outputs the closing signal B.
Send out. Therefore, as in the first embodiment, the electromagnetic bomb 1
0, and then drive the electromagnetic pump 10 in reverse as described above to empty the molten metal near the sprue hole 17. At the same time, the timer of the relay box 26 is activated by the blockage signal B, and after a set time, the hydraulic cylinder 30 is activated to move the second plunger 28 forward (downward in the figure) as shown in FIG.
It is pushed into the solidifying molten metal in the cavity 18 and applies high pressure to generate plastic flow. In FIG. 3, the same members as in FIG. 1 are designated by the same reference numerals and their explanations will be omitted. FIG. 5 shows a fourth embodiment, in which the first plunger and the second plunger are separated. The first plunger 33 is
It is provided concentrically with the sprue hole 17 and is mounted so that it can be moved forward and backward using a hydraulic cylinder 34. The second plunger 35 is provided at a suitable position depending on the shape of the cast product, and is mounted so as to be movable back and forth by a hydraulic cylinder 36. The second plunger 35 is not limited to what is shown in the drawings, and may be one or more, or may be a fixed mold, or may be a movable mold and a fixed mold. FIG. 6 shows the state in which the first plunger closes the sprue hole 17 and the second plunger 35 is pushed into the solidifying molten metal. In FIG. 5, the same members as in FIG. 1 are designated by the same reference numerals and their explanations will be omitted. FIG. 7 shows a fifth embodiment, in which a pneumatic pressure feeding device is used as the molten metal filling device. The molten metal holding furnace 13 is placed in the airtight chamber 3
7 and supplies pressurized air from a pressurized air supply device 38 to pressurize the surface of the molten metal 14 and forcefully feed the molten metal from the hot water supply pipe 12. Since the parts other than those shown in FIG. 7 are the same as those in FIGS. 1, 3, and 5, illustration and explanation will be omitted. The sixth embodiment is a case where a plunger pump similar to a hot chamber die-casting machine is used as a molten metal filling device. Since the parts other than the molten metal filling device are the same as in Figures 1, 3, and 5, illustrations and explanations will be omitted. [Effects of the Invention] As explained above, according to the present invention, by adopting a molten metal filling method that does not involve air entrainment during molten metal filling and does not generate cavities, which is a feature of low-pressure casting, closing the sprue hole with the first plunger, then pushing the second plunger into the solidifying molten metal in the cavity;
By applying high pressure to generate plastic flow and creating a so-called squeeze effect, it is possible to obtain high-strength cast products with no shrinkage cavities.
第１図は第１の実施例の概略断面図、第２図は第１図の
動作説明図、第３図は第３の実施例の概略断面図、第４
図は第３図の動作説明図、第５図は第４の実施例の概略
断面図、第６図は第５図の動作説明図、第７図は第５の
実施例の概略断面図であり、第８図は従来の低圧銚遣装
置の概略断面図である．
１０・・・・・・電磁ポンプ
１７・・・・・・湯口穴
１８・・・・・・キャビティ
２１・・・・・・加圧プランジャ装置
２２、２７、３３・・・・・・第１プランジャ２３、２
８、３５・・・・・・第２プランジャ２４、２９、３０
、３４、３６・・・油圧シリンダ２５・・・・・・前進
ストローク位置検出手段のセンサー３７・・・・・・気
密チャンバ
３８・・・・・・加圧空気供給装置FIG. 1 is a schematic sectional view of the first embodiment, FIG. 2 is an explanatory diagram of the operation of FIG. 1, FIG. 3 is a schematic sectional view of the third embodiment, and FIG.
The figure is an explanatory diagram of the operation of FIG. 3, FIG. 5 is a schematic sectional view of the fourth embodiment, FIG. 6 is an explanatory diagram of the operation of FIG. 5, and FIG. 7 is a schematic sectional diagram of the fifth embodiment. Figure 8 is a schematic cross-sectional view of a conventional low-pressure plowing device. 10... Electromagnetic pump 17... Sprue hole 18... Cavity 21... Pressurizing plunger device 22, 27, 33... First Plunger 23, 2
8, 35... Second plunger 24, 29, 30
, 34, 36... Hydraulic cylinder 25... Sensor 37 of forward stroke position detection means... Airtight chamber 38... Pressurized air supply device
Claims (4)
湯を充填し、前記キャビティに前記溶湯を充填完了後に
加圧プランジャ装置を作動させて、前記加圧プランジャ
装置の第１プランジャを湯口穴に挿入して閉塞した後に
前記溶湯充填装置の圧送を停止し、次に前記加圧プラン
ジャ装置の第２プランジャを前記キャビティ内の凝固し
つつある前記溶湯に押し込み、高圧を付加して塑性流動
を発生させるようにしたことを特徴とする加圧鋳造方法
。(1) Directly fill the cavity of the mold device with molten metal using the molten metal filling device, and after filling the cavity with the molten metal, operate the pressurized plunger device to insert the first plunger of the pressurized plunger device into the sprue hole. After the molten metal is inserted into the cavity and closed, the pressure feeding of the molten metal filling device is stopped, and then the second plunger of the pressurizing plunger device is pushed into the solidifying molten metal in the cavity, and high pressure is applied to induce plastic flow. A pressure casting method characterized in that the pressure casting is made to occur.
に垂直に前記固定金型に穿設し前記溶湯充填装置の給湯
管を接続した湯口穴と、同湯口穴に摺動自在に嵌入して
閉塞する第１プランジャおよび同第１プランジャよりも
大径で段付き一体に形成し前記移動金型に摺動自在に嵌
入し装着された第２プランジャを備え、溶湯充填中は前
記第１プランジャおよび第２プランジャを後退させて前
記湯口穴を開き、溶湯をキャビティに充填完了後、前記
第１および第２プランジャに取着したアクチュエータを
作動させて前記湯口穴を閉塞する加圧プランジャ装置と
、前記第１プランジャのストローク位置を検知して閉塞
信号を発信する位置検出装置とからなり、前記閉塞信号
で前記溶湯充填装置を停止するとともに、前記アクチュ
エータを中間停止しタイマーを作動し設定時間後に前記
アクチュエータを再作動させるか、もしくは前記アクチ
ュエータを中間停止させることなく連続作動させて前記
第２プランジャを前進させて、前記キャビティ内の凝固
しつつある前記溶湯に押し込み、高圧を付加するように
構成して成ることを特徴とする加圧鋳造装置。(2) A molten metal filling device, a sprue hole drilled in the fixed mold perpendicular to the mold dividing plane of the fixed mold and a movable mold and connected to the hot water supply pipe of the molten metal filling device, and a sprue hole that slides into the sprue hole. A first plunger that can be freely inserted and closed, and a second plunger that has a larger diameter than the first plunger, is integrally formed with a step, and is slidably inserted into and attached to the movable mold, and during filling of the molten metal. Retracting the first plunger and the second plunger to open the sprue hole, and after filling the cavity with molten metal, actuating actuators attached to the first and second plungers to apply pressure to close the sprue hole. It consists of a plunger device and a position detection device that detects the stroke position of the first plunger and sends a blockage signal, and stops the molten metal filling device at the blockage signal, stops the actuator in the middle, and activates a timer. After a set time, the actuator is reactivated, or the actuator is activated continuously without intermediate stops to advance the second plunger and push it into the solidifying molten metal in the cavity, applying high pressure. A pressure casting device characterized by being configured as follows.
１プランジャと第２プランジャを同軸二重構造とし、そ
れぞれに前後進するアクチュエータを具備して、溶湯を
キャビティに充填完了後、前記第１プランジャを前記ア
クチュエータで前進させて前記湯口穴を閉塞し、前記第
１プランジャの前進ストローク位置を位置検出手段で検
知して湯口穴閉塞信号を発信し、前記第１プランジャの
アクチュエータを停止するとともに、タイマーを作動し
設定時間後に前記第２プランジャをアクチュエータで前
進させて前記キャビティ内の凝固しつつある前記溶湯に
押し込み、高圧を付加するように構成して成ることを特
徴とする加圧鋳造装置。(3) The pressurized plunger device according to claim 2, wherein the first plunger and the second plunger have a coaxial double structure, each of which is provided with an actuator that moves back and forth, and after filling the cavity with the molten metal, the A first plunger is advanced by the actuator to close the sprue hole, a forward stroke position of the first plunger is detected by a position detection means, a sprue hole closing signal is transmitted, and the actuator of the first plunger is stopped. Pressure casting is characterized in that a timer is activated, and after a set time, the second plunger is advanced by an actuator and pushed into the solidifying molten metal in the cavity to apply high pressure. Device.
１プランジャを前記湯口穴と同軸上に、移動金型に摺動
自在に嵌入して、アクチュエータで前後進可能に装着し
、第２プランジャを移動金型、あるいは固定金型のいず
れか一方に、または両方に、また一つ、または複数をキ
ャビティに突き出すように摺動自在に嵌入して、アクチ
ュエータで前後進可能に装着し、前記第１プランジャの
前進ストローク位置を位置検出手段で検知して前記湯口
穴閉塞信号を発信し、前記第１プランジャをストローク
エンドで停止させるとともに、タイマーを作動し設定時
間後に前記第２プランジャを前進させて前記キャビティ
内の凝固しつつある前記溶湯に押し込み、高圧を付加す
るように構成して成ることを特徴とする加圧鋳造装置。(4) In the pressurizing plunger device according to claim 2, the first plunger is slidably fitted into the movable mold coaxially with the sprue hole and is mounted so as to be movable back and forth by an actuator. 2 plungers are slidably fitted into one or both of the movable mold or the fixed mold, and one or more plungers are slidably protruded into the cavity, and mounted so as to be movable back and forth by an actuator, The forward stroke position of the first plunger is detected by a position detection means, the sprue hole closing signal is sent, the first plunger is stopped at the end of the stroke, and a timer is activated to advance the second plunger after a set time. A pressure casting apparatus characterized in that the pressure casting apparatus is configured to press the molten metal into the solidifying molten metal in the cavity and apply high pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5078389A JP2961218B2 (en) | 1989-03-02 | 1989-03-02 | Pressure casting method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5078389A JP2961218B2 (en) | 1989-03-02 | 1989-03-02 | Pressure casting method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02229660A true JPH02229660A (en) | 1990-09-12 |
| JP2961218B2 JP2961218B2 (en) | 1999-10-12 |
Family
ID=12868424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5078389A Expired - Fee Related JP2961218B2 (en) | 1989-03-02 | 1989-03-02 | Pressure casting method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2961218B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5375544A (en) * | 1992-03-31 | 1994-12-27 | Bakron Corporation | Undercut and strengthened posts for polymeric bobbin basket |
| US5454416A (en) * | 1993-06-30 | 1995-10-03 | Toyota Jidosha Kabushiki Kaisha | Vacuum casting apparatus |
| US5462107A (en) * | 1993-06-30 | 1995-10-31 | Toyota Jidosha Kabushiki Kaisha | Vacuum casting method |
| US5562147A (en) * | 1994-09-05 | 1996-10-08 | Bortoloni; Andrea | Multi-stage casting plant and method of forming castings |
| US5908065A (en) * | 1995-01-23 | 1999-06-01 | Papervision Limited | Apparatus and method for squeeze casting |
| WO2011052138A1 (en) * | 2009-10-29 | 2011-05-05 | 助川電気工業株式会社 | Molten metal supply device and method for cleaning duct thereof |
| US8813818B2 (en) | 2011-11-11 | 2014-08-26 | Apple Inc. | Melt-containment plunger tip for horizontal metal die casting |
| JP2015039723A (en) * | 2013-08-22 | 2015-03-02 | グァンジュー ホイールホース アサヒ アルミニウム カンパニー リミテッド | Casting method of wheel or wheel center part |
| US9302320B2 (en) | 2011-11-11 | 2016-04-05 | Apple Inc. | Melt-containment plunger tip for horizontal metal die casting |
| JP2016087677A (en) * | 2014-11-10 | 2016-05-23 | 宇部興産機械株式会社 | Casting apparatus attachment, casting apparatus, casting method and adjustment method for molten metal supply amount |
| CN107138706A (en) * | 2017-04-13 | 2017-09-08 | 中北大学 | Metal liquid filling, Plastic Flow compound Die Forging technique |
| CN107321959A (en) * | 2017-09-05 | 2017-11-07 | 哈尔滨工业大学 | Large ship rises liquid disabling mechanism with copper alloy propeller counter-pressure casting |
Families Citing this family (1)
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| KR102210202B1 (en) * | 2019-06-07 | 2021-02-01 | 주식회사 포스코 | Casting apparatus and casting method |
-
1989
- 1989-03-02 JP JP5078389A patent/JP2961218B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5375544A (en) * | 1992-03-31 | 1994-12-27 | Bakron Corporation | Undercut and strengthened posts for polymeric bobbin basket |
| US5454416A (en) * | 1993-06-30 | 1995-10-03 | Toyota Jidosha Kabushiki Kaisha | Vacuum casting apparatus |
| US5462107A (en) * | 1993-06-30 | 1995-10-31 | Toyota Jidosha Kabushiki Kaisha | Vacuum casting method |
| US5562147A (en) * | 1994-09-05 | 1996-10-08 | Bortoloni; Andrea | Multi-stage casting plant and method of forming castings |
| US5908065A (en) * | 1995-01-23 | 1999-06-01 | Papervision Limited | Apparatus and method for squeeze casting |
| JP2011115844A (en) * | 2009-10-29 | 2011-06-16 | Sukegawa Electric Co Ltd | Molten metal feed device |
| WO2011052138A1 (en) * | 2009-10-29 | 2011-05-05 | 助川電気工業株式会社 | Molten metal supply device and method for cleaning duct thereof |
| US8813818B2 (en) | 2011-11-11 | 2014-08-26 | Apple Inc. | Melt-containment plunger tip for horizontal metal die casting |
| US9302320B2 (en) | 2011-11-11 | 2016-04-05 | Apple Inc. | Melt-containment plunger tip for horizontal metal die casting |
| JP2015039723A (en) * | 2013-08-22 | 2015-03-02 | グァンジュー ホイールホース アサヒ アルミニウム カンパニー リミテッド | Casting method of wheel or wheel center part |
| JP2016087677A (en) * | 2014-11-10 | 2016-05-23 | 宇部興産機械株式会社 | Casting apparatus attachment, casting apparatus, casting method and adjustment method for molten metal supply amount |
| CN107138706A (en) * | 2017-04-13 | 2017-09-08 | 中北大学 | Metal liquid filling, Plastic Flow compound Die Forging technique |
| CN107321959A (en) * | 2017-09-05 | 2017-11-07 | 哈尔滨工业大学 | Large ship rises liquid disabling mechanism with copper alloy propeller counter-pressure casting |
| CN107321959B (en) * | 2017-09-05 | 2019-04-16 | 哈尔滨工业大学 | Large ship rises liquid disabling mechanism with copper alloy propeller counter-pressure casting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2961218B2 (en) | 1999-10-12 |
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