JP3415466B2 - Injection method of casting sand in upper and lower casting mold simultaneous injection molding machine - Google Patents
Injection method of casting sand in upper and lower casting mold simultaneous injection molding machineInfo
- Publication number
- JP3415466B2 JP3415466B2 JP02164599A JP2164599A JP3415466B2 JP 3415466 B2 JP3415466 B2 JP 3415466B2 JP 02164599 A JP02164599 A JP 02164599A JP 2164599 A JP2164599 A JP 2164599A JP 3415466 B2 JP3415466 B2 JP 3415466B2
- Authority
- JP
- Japan
- Prior art keywords
- sand
- molding
- blowing
- compressed air
- blow
- 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.)
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- Casting Devices For Molds (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、マッチプレートを
使用して上・下鋳型を同時に吹込み造型する上・下鋳枠
同時吹込み式鋳型造型機における鋳物砂の吹込み方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for injecting molding sand in an upper and lower flask simultaneous blowing mold molding machine in which upper and lower molds are simultaneously blow-molded using a match plate.
【０００２】[0002]
【従来の技術】従来上記のような上・下鋳枠同時吹込み
式鋳型造型機としては、実公平２−１４８３３号公報及
び特開平１０−２１６９０２号公報等で公知になってい
る。これら上・下鋳枠同時吹込み式鋳型造型機は、サン
ドマガジン、上・下屈曲筒及び上・下ブローヘッドを通
じて上・下鋳枠に鋳物砂を同時に吹込み充填させるよう
にされている。2. Description of the Related Art Conventionally, the above-mentioned upper and lower flask simultaneous blowing type mold making machines have been known from Japanese Utility Model Publication No. 2--14833 and Japanese Patent Application Laid-Open No. 10-216902. These upper and lower flasks simultaneously blown mold molding machines are designed to simultaneously blow and fill the molding sand into the upper and lower flasks through a sand magazine, upper and lower bending cylinders, and upper and lower blowheads.
【０００３】[0003]
【発明が解決しようとする課題】上記のような上・下鋳
枠同時吹込み式鋳型造型機においては、鋳物砂がサンド
マガジンから上・下鋳枠に吹込み充填されるまでに流動
速度が変化して失速したり流れが悪くなって鋳物砂の一
部が屈曲筒及びブローヘッドの屈曲部あるいは水平部に
停滞されてしまい上・下鋳枠に対して適確に鋳物砂の吹
込み充填をすることができなくなる問題があり、前記特
開平１０−２１６９０２号公報に開示されているように
前記上・下ブローヘッドに鋳物砂の前進方向の変更及び
鋳物砂の流動化を促進させるためのベントプラグ付の圧
縮空気噴出機構を設けたものが提案されている。SUMMARY OF THE INVENTION In the above-described upper and lower flask simultaneous blowing mold molding machine as described above, the flow velocity of the molding sand is increased from the sand magazine to the upper and lower flasks by blowing. It changes and stalls or the flow deteriorates, and a part of the molding sand is stagnated at the bending part or the horizontal part of the bending cylinder and the blow head, so that the upper and lower molding flasks are accurately blown and filled. There is a problem in that the upper and lower blow heads can change the advancing direction of the molding sand and promote fluidization of the molding sand as disclosed in JP-A-10-216902. It has been proposed to provide a compressed air ejection mechanism with a vent plug.
【０００４】このように上・下ブローヘッドにベントプ
ラグ付の圧縮空気噴出機構を備えた上・下鋳枠同時吹込
み式鋳型造型機においては鋳型造型を長い時間続ける間
にベントプラグに鋳物砂の目詰まりを発生させ、圧縮空
気噴出機構が十分に機能せず上・下鋳枠に対して安定し
て鋳物砂を吹込み充填できなくなる問題があった。なお
ベントプラグに対する鋳物砂詰まりをなくすために圧縮
空気噴出機構から噴出される圧縮空気の圧力を高くする
ことも考えられるが噴出される圧縮空気の圧力を高くす
るとサンドマガジンからの鋳物砂の流れが阻害されてか
えって鋳物砂の吹込み充填が悪くなる問題がある。本発
明は上記の問題に鑑みて成されたもので、鋳物砂を上・
下鋳枠のそれぞれに対し適確にして常に十分に安定して
吹込み充填することができる上・下鋳枠同時吹込み式鋳
型造型機における鋳物砂吹込み方法を提供することを目
的とする。As described above, in the simultaneous upper and lower mold blowing type mold making machine having the compressed air jetting mechanism with the upper and lower blow heads having the vent plug, the casting sand is added to the vent plug while the molding is continued for a long time. However, there is a problem that the compressed air jetting mechanism does not function sufficiently and stable injection of the molding sand into the upper and lower flasks is impossible. It is possible to increase the pressure of the compressed air ejected from the compressed air ejection mechanism in order to eliminate clogging of the foundry sand with respect to the vent plug, but if the pressure of the ejected compressed air is increased, the flow of the foundry sand from the sand magazine will increase. There is a problem that it is hindered and the blow-filling of foundry sand becomes worse. The present invention has been made in view of the above problems, and the casting sand is
It is an object of the present invention to provide a casting sand blowing method in an upper and lower flask simultaneous blowing type mold making machine that can be blow-filled with accuracy and with sufficient stability for each of the lower flasks. .
【０００５】[0005]
【究明テスト】本発明者達は上記問題の究明のために種
々のテストを試みた結果次のことを知見した。すなわち
通常に鋳物砂の吹込み充填が成されている場合には、鋳
物砂の吹込み開始から終了までの間で、サンドマガジン
内の圧縮空気の最大圧力とブローヘッド内の圧縮空気の
最大圧力とが図3に示すように極めて近い圧力値になり
その差圧値ΔＰが小さく、他方ブローヘッドの圧縮空気
噴出機構のベントプラグに鋳物砂詰まりが発生し鋳物砂
の吹込み充填が不十分である場合には、サンドマガジン
内の圧縮空気の最大圧力とブローヘッド内の圧縮空気の
最大圧力とに大きな圧力差が生じ図4に示すようにその
差圧値ΔＰが大きくなることを見出した。[Investigation test] As a result of trying various tests to investigate the above problems, the present inventors have found out the following. That is, in the case where the molding sand is normally blown and filled, the maximum pressure of the compressed air in the sand magazine and the maximum pressure of the compressed air in the blow head are between the start and the end of the blowing of the molding sand. Are extremely close to each other as shown in Fig. 3 and the differential pressure value ΔP is small. On the other hand, the vent plug of the compressed air jetting mechanism of the blow head is clogged with the molding sand, and the blow filling of the molding sand is insufficient. In some cases, it has been found that a large pressure difference occurs between the maximum pressure of compressed air in the sand magazine and the maximum pressure of compressed air in the blow head, and the differential pressure value ΔP increases as shown in FIG.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
めに本発明の上・下鋳枠同時吹込み式鋳型造型機におけ
る鋳物砂吹込み方法は、上記究明テストにより知見した
ことに基づいて成されたもので、先に鋳物砂を上・下鋳
枠に吹込み充填した際のサンドマガジン内に供給された
圧縮空気の最大圧力及び上・下ブローヘッド内に供給さ
れた圧縮空気の最大圧力とを計測する工程と、前記サン
ドマガジン内の最大圧力と上・下ブローヘッド内の最大
圧力との圧力差を算出すると共に該算出した圧力差と予
め記憶されている圧力差値とを比較演算する工程と、前
記圧力差値の比較演算の結果その圧力差値が許容範囲内
の場合には次回の鋳物砂吹込みをそのまま続け、その圧
力差値が許容範囲外の場合には対応するブローヘッド内
へ通常時よりも高圧の圧縮空気を前記ベントプラグ付の
圧縮空気噴出機構から供給して該ベントプラグの鋳物砂
詰まりを解除した後に次回の鋳物砂吹込みに移る工程
と、から成ることを特徴とするものである。[Means for Solving the Problems] In order to achieve the above-mentioned object, a method for injecting molding sand in an upper and lower flask simultaneous blowing mold molding machine of the present invention is based on the findings of the above-mentioned investigation test. The maximum pressure of compressed air supplied to the sand magazine and the maximum compressed air supplied to the upper and lower blow heads when the upper and lower molds were first blown and filled with molding sand. The step of measuring the pressure and the pressure difference between the maximum pressure in the sand magazine and the maximum pressure in the upper and lower blow heads are calculated, and the calculated pressure difference is compared with a pre-stored pressure difference value. If the pressure difference value is within the allowable range as a result of the calculation process and the comparison operation of the pressure difference value, the next casting sand blowing is continued as it is, and if the pressure difference value is outside the allowable range, it is dealt with. Higher than usual in the blow head The compressed air is supplied from the compressed air injection mechanism with the vent plug is characterized in that it consists of the steps to move to the next lump casting sand blown after releasing the molding sand clogging of the vent plug.
【０００７】[0007]
【発明の実施の形態】以下本発明で使用される上・下鋳
枠同時吹込み式鋳型造型機について図1に基づいて説明
する。この鋳型造型機はマッチプレート１とこのマッチ
プレート１の上下面に対してそれぞれ当接可能に配設さ
れた上・下鋳枠２、３と、上・下鋳枠２、３に対して鋳
物砂を吹込み可能なエルボ状の上・下ブローヘッド４、
５と、この上・下ブローヘッド４、５に鋳物砂を吹込み
供給可能なサンドマガジン６と、で構成されている。BEST MODE FOR CARRYING OUT THE INVENTION An upper and lower flask simultaneous blowing mold molding machine used in the present invention will be described below with reference to FIG. The mold making machine is a match plate 1 and upper and lower flasks 2 and 3 which are arranged so as to be capable of contacting the upper and lower surfaces of the match plate 1, and castings for the upper and lower flasks 2 and 3, respectively. Elbow-shaped upper and lower blow heads 4, which can be blown with sand,
5 and a sand magazine 6 capable of blowing and supplying molding sand to the upper and lower blow heads 4 and 5.
【０００８】前記上・下鋳枠２、３は、図示されないシ
リンダにより昇降されるようになっており、前記上・下
ブローヘッド４、５は図示されないフレームに設置され
たシリンダのピストンロッド７、８の先端に装着してあ
って昇降されるようになっている。また前記上・下ブロ
ーヘッド４、５には、該上・下ブローヘッド４、５内の
鋳物砂の前進方向の変更及び鋳物砂の流動化を促進させ
るための圧縮空気を噴出するベントプラグ９、９付の圧
縮空気噴出機構１０、１０がそれぞれ設けられている。
なお該圧縮空気噴出機構１０、１０は図示されない圧力
コントロール弁を介して圧縮空気供給源（図示せず）に
連通されている。The upper and lower flasks 2 and 3 are moved up and down by a cylinder (not shown), and the upper and lower blow heads 4 and 5 are piston rods 7 of the cylinder installed in the frame (not shown). It is attached to the tip of 8 and can be moved up and down. Further, the upper and lower blow heads 4 and 5 are provided with vent plugs 9 for ejecting compressed air for promoting the change of the advancing direction of the molding sand in the upper and lower blow heads 4 and 5 and the fluidization of the molding sand. , And compressed air jetting mechanisms 10 and 10 are respectively provided.
The compressed air ejection mechanisms 10 and 10 are connected to a compressed air supply source (not shown) via a pressure control valve (not shown).
【０００９】さらに前記サンドマガジン６は、上・下砂
槽１１、１２により構成され、上砂槽11は上屈曲筒１３
を介して前記上ブローヘッド４に連通可能にされている
と共に下砂槽１２は下屈曲筒１４を介して前記下ブロー
ヘッド５に連通可能にされている。なおサンドマガジン
６の上部位置には、圧縮空気を導入するための圧縮空気
供給口１５が設けられている。また前記上・下ブローヘ
ッド４、５及びサンドマガジン６の上砂槽１１には、内
部の空気圧を連続して測定してその結果を図示されない
マイクロコンピュータに出力する圧力センサー４Ａ、５
Ａ、６Ａがそれぞれ配設されている。なおこのマイクロ
コンピュータは上・下ブローヘッド４、５の圧縮空気噴
出機構１０、１０に通じる図示されない圧力コントロー
ル弁を制御するように電気的に接続されている。Further, the sand magazine 6 is composed of upper and lower sand tanks 11 and 12, and the upper sand tank 11 is an upper bent cylinder 13
The lower sand tub 12 can communicate with the lower blow head 5 through the lower bent cylinder 14 while being able to communicate with the upper blow head 4 through the lower bend tank 14. A compressed air supply port 15 for introducing compressed air is provided at an upper position of the sand magazine 6. Further, in the upper and lower blow heads 4, 5 and the upper sand tank 11 of the sand magazine 6, pressure sensors 4A, 5 for continuously measuring the internal air pressure and outputting the result to a microcomputer (not shown).
A and 6A are provided respectively. The microcomputer is electrically connected so as to control a pressure control valve (not shown) that communicates with the compressed air ejection mechanisms 10 and 10 of the upper and lower blow heads 4 and 5.
【００１０】次にこのように構成されたものによる鋳物
砂の吹込みを説明する。図1の状態で上・下砂槽１１、
１２に所定量の鋳物砂を投入し、続いてサンドマガジン
６に圧縮空気を供給すると共に上・下ブローヘッド４、
５の圧縮空気噴出機構１０、１０に圧縮空気を供給して
上・下鋳枠２、３に対して鋳物砂の吹込み充填を行う
（以下図2を参照して説明する）。この際上・下ブロー
ヘッド４、５及びサンドマガジン６の圧力センサー４
Ａ、５Ａ、６Ａによりそれぞれの内部の最大圧力が測定
されて図示されないマイクロコンピュータに出力され
る。Next, the blowing of foundry sand by means of the above-mentioned structure will be described. In the state of Fig. 1, the upper and lower sand tanks 11,
12 is filled with a predetermined amount of molding sand, then compressed air is supplied to the sand magazine 6, and the upper and lower blow heads 4,
Compressed air is supplied to the compressed air ejection mechanisms 10 and 10 of FIG. 5 to blow and fill the molding sand into the upper and lower flasks 2 and 3 (described below with reference to FIG. 2). At this time, the upper and lower blow heads 4, 5 and the pressure sensor 4 of the sand magazine 6
The maximum internal pressure of each of A, 5A and 6A is measured and output to a microcomputer (not shown).
【００１１】次に前記サンドマガジン６内の圧縮空気の
最大圧力と、上・下ブローヘッド４、５内の圧縮空気の
最大圧力との圧力差を算出すると共にこの算出した圧力
差値と予め記憶している圧力差値とを比較演算した後該
比較演算結果が図3に示すように圧力差値ΔＰが小さく
許容範囲内にある場合には、次回の鋳物砂吹込み充填を
そのまま続ける。Next, a pressure difference between the maximum pressure of the compressed air in the sand magazine 6 and the maximum pressure of the compressed air in the upper and lower blow heads 4, 5 is calculated, and the calculated pressure difference value is stored in advance. If the pressure difference value ΔP is small and within the allowable range as shown in FIG. 3 after the comparison calculation with the pressure difference value that is being performed, the next casting sand blow filling is continued.
【００１２】他方圧力差値の比較演算結果が図4に示す
ように圧力差値ΔＰが大きく許容範囲外の場合は、対応
するブローヘッド４または５のベントプラグ９、９付圧
縮空気噴出機構１０、１０の図示されない圧力コントロ
ール弁を切り替えて通常時よりも高圧の圧縮空気を前記
対応する圧縮空気噴出機構１０、１０を介してブローヘ
ッド４または５内に噴出させもってベントプラグ９、９
の鋳物砂詰まりを解除させた後次回の鋳物砂吹込みに移
る。On the other hand, when the comparison result of the pressure difference values shows that the pressure difference value ΔP is large and is out of the allowable range as shown in FIG. 4, the compressed air ejection mechanism 10 with the vent plugs 9 and 9 of the corresponding blow head 4 or 5 is used. Vent plugs 9 and 9 by switching a pressure control valve (not shown) of 10 to eject compressed air having a higher pressure than usual into the blow head 4 or 5 through the corresponding compressed air ejection mechanism 10 and 10.
After clearing the clogging of the molding sand of the above, move to the next blowing of molding sand.
【００１３】なお前記圧縮空気噴出機構１０、１０の図
示されない圧力コントロール弁の切り替えが自動的に成
されない機構になっている場合には、鋳型造型機を一旦
機械停止させるかあるいは異常を警報ブザー若しくはデ
ィスプレーにより警告表示させて人手により機械停止さ
せた後圧縮空気噴出機構１０、１０の圧力コントロール
弁を切り替えて同様に高圧の圧縮空気を噴出させ、ベン
トプラグ９、９の鋳物砂詰まりを解除して次回の鋳物砂
吹込み充填を続けさせるようにしてもよい。If the pressure control valves (not shown) of the compressed air jetting mechanisms 10 and 10 are not automatically switched, the mold making machine is temporarily stopped or an alarm buzzer or an abnormality is issued. After a warning is displayed on the display and the machine is stopped manually, the pressure control valves of the compressed air ejection mechanisms 10 and 10 are switched to eject high-pressure compressed air in the same manner, and the clogging of the casting sand of the vent plugs 9 and 9 is released. You may make it continue the next casting sand blow filling.
【００１４】[0014]
【発明の効果】本発明は、上記の説明から明らかなよう
に、サンドマガジン内の空気圧力と、上・下ブローヘッ
ド内の空気圧力との差圧値から目詰まり異常を検知し、
異常時には高圧圧縮空気をベントプラグ付の圧縮空気噴
出機構からブローヘッド内に噴出させて目詰まりを解除
させた後に鋳物砂吹込み充填を続けさせるようにしたか
ら、本来の鋳物砂吹込みに悪影響を与えることなく鋳物
砂吹込み充填を適確にして常に十分に安定させて成すこ
とができるようになる等の効果がある。As is apparent from the above description, the present invention detects clogging abnormality from the differential pressure value between the air pressure inside the sand magazine and the air pressure inside the upper and lower blow heads.
At abnormal times, high-pressure compressed air is blown out from the compressed air jet mechanism with a vent plug into the blow head to clear the clogging and then continue to blow the casting sand, which adversely affects the original blowing of the casting sand. There is an effect such that it is possible to perform the casting sand blow filling properly without always giving it, and to always perform it sufficiently stably.
【図１】本発明の対象となる上・下鋳枠同時吹込み式鋳
型造型機の要部縦断正面図である。FIG. 1 is a vertical sectional front view of an essential part of an upper / lower flask simultaneous blowing type mold making machine which is an object of the present invention.
【図２】本発明を示すフローチャート図である。FIG. 2 is a flowchart showing the present invention.
【図３】鋳物砂吹込みの通常時の圧力タンク、サンドマ
ガジン、上・下ブローヘッドの吹込み時間と圧力の関係
を示すグラフである。FIG. 3 is a graph showing a relationship between a blowing time and a pressure of a pressure tank, a sand magazine, and upper and lower blow heads at a normal time of casting sand blowing.
【図４】鋳物砂吹込みの異常時の圧力タンク、サンドマ
ガジン、上・下ブローヘッドの吹込み時間と圧力の関係
を示すグラフである。FIG. 4 is a graph showing the relationship between the blowing time and the pressure of the pressure tank, the sand magazine, and the upper and lower blow heads when the casting sand blowing is abnormal.
２ 上鋳枠 ３ 下鋳枠 ４ 上ブローヘッド ５ 下ブローヘッド ６ サンドマガジン ４Ａ ５Ａ ６Ａ 圧力センサー ９ ベントプラグ 10 圧縮空気噴出機構 2 Upper flask 3 Lower flask 4 Upper blow head 5 Lower blow head 6 Sand Magazine 4A 5A 6A pressure sensor 9 Vent plug 10 Compressed air ejection mechanism
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松下 雅俊 愛知県豊川市穂ノ原三丁目１番地 新東 工業株式会社豊川製作所内 (72)発明者 牧野 泰育 愛知県豊川市穂ノ原三丁目１番地 新東 工業株式会社豊川製作所内 (56)参考文献 特開 平10−216902（ＪＰ，Ａ) 特開 平８−281376（ＪＰ，Ａ) 特開 平６−277800（ＪＰ，Ａ) 特開 昭58−107251（ＪＰ，Ａ) 実開 平１−105046（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22C 11/00 - 25/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masatoshi Matsushita 3-chome, Honohara, Toyokawa City, Aichi Prefecture, Shinto Kogyo Co., Ltd.Toyokawa Plant (72) Inventor, Taiku Makino 3-chome, Honohara, Toyokawa, Aichi Prefecture Shinto (56) Reference JP 10-216902 (JP, A) JP 8-281376 (JP, A) JP 6-277800 (JP, A) JP 58-107251 (JP, A) Actual Kaihei 1-105046 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) B22C 11 / 00-25 / 00
Claims (3)
上・下ブローヘッドと、この上・下ブローヘッドに鋳物
砂を吹込み供給可能なサンドマガジンと、前記上・下ブ
ローヘッドに設けられて鋳物砂の前進方向の変更及び鋳
物砂の流動化を促進させるベントプラグ付の圧縮空気噴
出機構と、を備えた上・下鋳枠同時吹込み式鋳型造型機
における鋳物砂吹込み方法であって、先に鋳物砂を上・
下鋳枠に吹込み充填した際の前記サンドマガジン内に供
給された圧縮空気の最大圧力及び上・下ブローヘッド内
に供給された圧縮空気の最大圧力とを計測する工程と、
前記サンドマガジン内の最大圧力と上・下ブローヘッド
内の最大圧力との圧力差を算出すると共に該算出した圧
力差と予め記憶されている圧力差値とを比較演算する工
程と、前記圧力差値の比較演算の結果その圧力差値が許
容範囲内の場合には次回の鋳物砂吹込みをそのまま続
け、その圧力差値が許容範囲外の場合には対応するブロ
ーヘッド内へ通常時よりも高圧の圧縮空気を前記ベント
プラグ付の圧縮空気噴出機構から供給して該ベントプラ
グの鋳物砂詰まりを解除した後に次回の鋳物砂吹込みに
移る工程と、から成ることを特徴とする上・下鋳枠同時
吹込み式鋳型造型機における鋳物砂吹込み方法。1. An upper / lower blow head capable of blowing molding sand into upper / lower molding flasks, a sand magazine capable of blowing molding sand to the upper / lower blow heads, and said upper / lower. A molding sand in an upper and lower flask simultaneous blowing type mold making machine equipped with a compressed air jetting mechanism equipped with a blow head for changing the forward direction of the molding sand and promoting fluidization of the molding sand It is a blowing method, first with the casting sand
A step of measuring the maximum pressure of the compressed air supplied in the sand magazine and the maximum pressure of the compressed air supplied in the upper and lower blow heads when blow-filling the lower flask.
Calculating a pressure difference between the maximum pressure in the sand magazine and the maximum pressure in the upper and lower blow heads, and comparing and calculating the calculated pressure difference with a pressure difference value stored in advance; If the pressure difference value is within the permissible range as a result of the value comparison operation, the next injection of the molding sand is continued, and if the pressure difference value is outside the permissible range, the blow head is put into the corresponding blow head more than usual. A step of supplying high-pressure compressed air from the compressed air jetting mechanism with the vent plug to clear the clogging of the molding sand of the vent plug, and then moving on to the next blowing of molding sand. A method for blowing casting sand in a simultaneous molding blow-type mold making machine.
の場合に、前記上・下鋳枠同時吹込み式鋳型造型機の作
動を一旦停止させた後前記鋳物砂詰まりの解除をするこ
とを特徴とする請求項１記載の上・下鋳枠同時吹込み式
鋳型造型機における鋳物砂吹込み方法。2. When the comparison calculation result of the pressure difference value is outside the allowable range, the operation of the upper and lower flask simultaneous blowing type mold making machine is once stopped, and then the sand clogging of the casting is released. The method for injecting molding sand in an upper / lower flask simultaneous blowing type mold making machine according to claim 1.
の場合に、その異常を警告表示した後前記上・下鋳枠同
時吹込み式鋳型造型機の作動を一旦停止させると共に前
記鋳物砂詰まりの解除をすることを特徴とする請求項１
記載の上・下鋳枠同時吹込み式鋳型造型機における鋳物
砂吹込み方法。3. When the comparison calculation result of the pressure difference value is out of the allowable range, a warning is displayed to indicate the abnormality, and then the operation of the upper and lower flask simultaneous blowing mold molding machines is temporarily stopped and the casting is performed. The method according to claim 1, wherein the sand clogging is released.
A method for injecting molding sand in the above-described upper and lower flasks simultaneously blowing type molding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02164599A JP3415466B2 (en) | 1999-01-29 | 1999-01-29 | Injection method of casting sand in upper and lower casting mold simultaneous injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02164599A JP3415466B2 (en) | 1999-01-29 | 1999-01-29 | Injection method of casting sand in upper and lower casting mold simultaneous injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000218344A JP2000218344A (en) | 2000-08-08 |
| JP3415466B2 true JP3415466B2 (en) | 2003-06-09 |
Family
ID=12060804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02164599A Expired - Fee Related JP3415466B2 (en) | 1999-01-29 | 1999-01-29 | Injection method of casting sand in upper and lower casting mold simultaneous injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3415466B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189228B (en) * | 2011-03-23 | 2012-10-31 | 苏州明志科技有限公司 | Nozzle cleaning mechanism |
| CN102581234B (en) * | 2012-03-26 | 2013-09-11 | 侯马市东鑫机械铸造有限公司 | Cleaning device of iron mould sand-covering process iron mould sand ejecting hole |
| JP7178642B2 (en) | 2020-07-01 | 2022-11-28 | パナソニックＩｐマネジメント株式会社 | Wave power utilization device and its control method |
-
1999
- 1999-01-29 JP JP02164599A patent/JP3415466B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000218344A (en) | 2000-08-08 |
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