JP2004130329A - Method and device for stabilizing sand properties before sand is charged in molding machine - Google Patents
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Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は、バッチ式混練機により混練された混練砂の排出時の砂をサンプリングして砂性状を測定すると共にその結果を次回の砂混練にフィードバックして混練砂の砂性状を安定化させ、造型機へ輸送する造型機前の砂性状安定化方法及びその装置に関する。
【０００２】
【従来の技術】
従来、造型機前の砂性状を安定化させる方法及び装置としては、回収砂の砂温によって、バッチ式混練機の制御パラメータ（例えば、コンパクタビリティ）を増減するもの（例えば、特許文献１及び特許文献２参照。）である。しかし、この方法及び装置では、混練砂をサンプリングしてコンパクタビリティ値、回収砂温度・水分値等を測定し、その結果を次回バッチのバッチ式混練機にフィードバックして鋳物砂の混練を制御している。
【０００３】
【特許文献１】
特公平１−１５８２５号公報（第１〜２ペ−ジ、図１）
【特許文献２】
特公平３−７６７１０号公報（第１〜２ペ−ジ、図１）
【０００４】
【発明が解決しようとする課題】
上記のような鋳物砂の混練制御では混練排出後の混練砂を造型機へ輸送する間に水分を蒸発させたり、砂温度降下により砂性状に大きく影響すると共に時間要素でも不安定になるため、正確な時間管理をする必要があるが、これらを勘案した造型機前の砂性状を安定させることができなかった。
本発明は上記の問題に鑑みてなされたもので、造型機前の混練砂の砂性状と、バッチ式混練機排出時の混練砂の砂性状との間の時間要素を考慮した混練制御をする造型機前の砂性状安定化方法及びその装置を提供することを目的とする。
【０００５】
【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、本発明における造型機前の砂性状安定化方法は、バッチ式混練機から排出・搬送されて造型機に投入される前の造型機前の砂性状を測定する工程と、該砂性状を前記バッチ式混練機にフィードバックする工程と、を備えている。本発明によれば、造型機前の混練砂の砂性状がわかるため、バッチ式混練機の混練制御をすることができる。
【０００６】
また、上記の目的を達成するために、本発明における造型機前の砂性状安定化方法は、第１砂性状計測機により混練を制御するバッチ式混練機から排出・搬送されて造型機に投入される前の造型機前の砂性状を第２砂性状計測機により測定する工程と、該砂性状を前記バッチ式混練機にフィードバックする工程と、を備えている。本発明によれば、第２砂性状計測機により造型機前の混練砂の砂性状がわかるため、バッチ式混練機の混練制御をすることができる。
【０００７】
さらに、上記の目的を達成するために、本発明における造型機前の砂性状安定化方法は、第１砂性状計測機においてバッチ式混練機排出時の砂性状を測定・測定時刻と共に記憶する工程と、前記バッチ式混練機から排出・搬送されて造型機に投入される前の造型機前の砂性状を第２砂性状計測機により測定・測定時刻と共に記憶する工程と、前記造型機前の砂性状を測定時刻により前記バッチ式混練機にフィードバックする工程と、を備えている。本発明によれば、第２砂性状計測機により造型機前の混練砂の砂性状・時刻がわかるため、バッチ式混練機の混練制御を確実にすることができる。
【０００８】
加えて、上記の目的を達成するために、本発明における造型機前の砂性状安定化方法は、バッチ式混練機排出時の砂性状を測定・測定時刻、目標値と共に記憶する工程と、造型機前の砂性状を測定・測定時刻、目標値と共に記憶する工程と、前回の造型機前の砂性状を測定した時刻から輸送時間前のバッチ式混練機から排出された時刻の砂性状の測定値を検索する工程と、前記前回の造型機前の砂性状の測定値と目標値との偏差を算出する工程と、砂輸送経路による砂性状の測定値の変化量を算出する工程と、前回のバッチ式混練機の砂性状の目標値を読出す工程と、次回のバッチ式混練機の砂性状の目標値を算出する工程と、該算出された砂性状の目標値を次バッチ混練に用いて混練する工程と、を備えたことを特徴とする。本発明において、算出された混練時刻におけるバッチ式混練機排出時の砂性状の測定値と造型機前の砂性状の目標値との偏差の砂輸送経路による砂性状の測定値の変化量を補正する工程と、を更に備えることができる。またなお、第１砂性状計測機と第２砂性状計測機とを用いる場合には、サンプリング方法が異なり、同じ計測方法とすることができる。本発明によれば、造型機前の砂とバッチ式混練機のサンプリング砂を性状変化させずに同一レベルで扱えるようにすることができる。
すなわち、本発明においては通常は圧力がかかっていない状態でのサンプリングによる造型機前の混練砂と、通常はスクレーパ、タイヤ、スクリューなどの回転による遠心力などで圧力がかかっている状態でのサンプリングによるバッチ式混練機からの混練砂を、同一レベルのサンプリング砂にすることができる。
【０００９】
そして、上記の目的を達成するために、本発明における造型機前の砂性状安定化方法は、バッチ式混練機から混練砂が排出される時刻と混練砂の砂性状を測定すると共にこれを記憶する工程と、前記混練砂が前記造型機に排出される時刻と混練砂の砂性状を測定すると共にこれを記憶する工程と、前回造型機前測定時刻から輸送時間前のバッチ式混練機排出時刻の測定値から砂性状測定時刻とバッチ式混練機から造型機までの砂輸送時間からその相当砂の混練時刻を算出すると共に該算出混練時刻におけるバッチ式混練機排出時の砂性状測定を検索し読み出す工程と、算出したバッチ式混練機排出時刻における砂性状測定値と前回造型機前の砂性状測定値とから砂輸送経路による砂性状測定値の変化量を算出する工程と、造型機前の砂性状目標値を前回造型機前の砂性状測定時刻及び測定値からその偏差を算出する工程と、前回造型機前の砂性状測定値と目標値との偏差を砂輸送経路による砂性状測定値の変化量の比率で補正して砂性状補正値を算出する工程と、前回バッチ混練の砂性状目標値の記憶から次バッチ混練の砂性状目標値に前記砂性状補正値を反映して次バッチ砂性状目標値を算出して、次バッチ混練の際にバッチ式混練機の砂性状コントロールをする工程と、を具備することを特徴とする。
【００１０】
一方、本発明における造型機前の砂性状安定化装置は、バッチ式混練機から輸送を通じて造型機に輸送される砂の造型機前の砂性状を安定化させる装置であって、バッチ式混練機側壁に設置した砂サンプリング機構付き砂性状計測機と、造型機前に配置した微押圧砂サンプリング機能付き砂性状計測機と、を具備したことを特徴とする。
【００１１】
また、本発明における造型機前の砂性状安定化装置は、バッチ式混練機から砂輸送経路を通じて造型機に輸送される砂の造型機前の砂性状を安定化させる装置であって、バッチ式混練機側壁に設置した砂サンプリング機構付き第１砂性状計測機と、造型機前に配置した砂サンプリング機能付き第２砂性状計測機と、を具備し、前記造型機前の砂と前記バッチ式混練機のサンプリング砂を性状変化させずに同一レベルで扱えるように採取することを特徴とする。
【００１２】
さらに、本発明における造型機前の砂性状安定化装置は、造型機前の砂性状を測定して、混練工程にフィードバックする、造型機前の砂性状を安定化する装置であって、
バッチ式混練機排出時の砂性状測定手段と、バッチ式混練機排出時の測定値等記憶手段と、造型機前の砂性状測定手段と、造型機前の測定値等記憶手段と、前回造型機前測定時刻から輸送時間前のバッチ式混練機排出時刻の測定値検索手段と、前回造型機前の砂性状測定値と目標値との偏差算出手段と、砂輸送経路による砂性状測定値の変化量算出手段と、
算出された混練時刻におけるバッチ式混練機排出時の砂性状測定値と造型機前の砂性状目標値との偏差の砂輸送経路による砂性状測定値の変化量補正手段と、前回バッチのバッチ式混練機の砂性状目標値の記憶装置からの読出手段と、次バッチ混練の砂性状目標値算出手段と、次バッチ混練制御手段と、を具備したことを特徴とする。
【００１３】
そして、本発明における造型機前の砂性状安定化装置は、バッチ式混練機の側壁に備えられて、バッチ式混練機排出時の時刻及び砂性状を測定するバッチ式混練機排出時の砂性状測定手段と、バッチ式混練機排出時の測定値等記憶手段と、造型機前に備えられて、造型機前の混練砂排出時の時刻及び砂性状を測定する造型機前の砂性状測定手段と、造型機前の測定値等記憶手段と、前回造型機前測定時刻から輸送時間前のバッチ式混練機排出時刻及び砂性状測定値の検索手段と、前回造型機前の砂性状測定値と目標値との偏差算出手段と、砂輸送経路による砂性状測定値の変化量算出手段と、算出された混練時刻におけるバッチ式混練機排出時の砂性状測定値と造型機前の砂性状目標値との偏差の砂輸送経路による砂性状測定値の変化量補正手段と、前回バッチのバッチ式混練機砂性状目標値の記憶装置からの読み出し手段と、次バッチ混練の砂性状目標値算出手段と、次バッチ混練制御手段と、を具備したことを特徴とする。
【００１４】
【発明の実施の形態】
以下本発明の実施の形態を図面に基づき詳しく説明する。図１においてバッチ式混練機１の側壁には砂サンプリング機構付き砂性状計測機（「第１砂性状計測機」以下同じ）２が配設されている。また、バッチ式混練機１の下部には砂ホッパ３が配置され、該砂ホッパ３の下部に混練砂の輸送手段であるベルトフィ−ダ４が設けられている。
【００１５】
該ベルトフィ−ダ７の先端は、造型機５の上部に配置された砂ホッパ６の上方に臨んで配置されていると共に該砂ホッパ６の下部にベルトフィ−ダ７が設置されている。該ベルトフィ−ダ７の先端は造型機５のシュ−トホッパ上部に臨んで配置されている。
【００１６】
また前記砂ホッパ６の側壁には後述の微押圧電動シリンダ３００（図３参照）を付属の砂サンプリング機能付き砂性状計測機（「第２砂性状計測機」以下同じ）８が取付けられている。また前記砂サンプリング機能付き砂性状計測機２及び微押圧電動シリンダ３００を付属の砂サンプリング機能付き砂性状計測機８は、各砂性状を計測採取し演算処理する記憶演算機能付制御盤９が電気的に接続されている。
【００１７】
次に図２に砂サンプリング機能付き砂性状計測機２の具体例を示す。バッチ式混練機１の側壁に備えられて、サンプリングスクリュー２０９を変速機構２１０付き無段変速電動機２１１で回転させている。砂サンプリング機能付き砂性状計測機２には、水分センサ２１２およびコンパクタビリティ測定用のエンコーダ２１３が配置してある。また、採取砂を圧縮するスクイズシリンダ２１４と砂かきあるいは邪魔板としてスクレープシリンダ２１５がある。計測する砂性状は、水分、砂温およびコンパクタビリティである。
【００１８】
次に図３に造型機５直前で混練砂をサンプリングし、計測する微押圧砂サンプリング機能付き砂性状計測機８の具体例を示す。
バッチ式混練機１側壁での砂押出し機能を持たせるため、砂サンプリング機構内に、造型砂を微押圧する微押圧電動シリンダ３００が設置されている。その他は、前記砂サンプリング機能付き砂性状計測機２と同様に、サンプリングスクリュー３０９を必要に応じて変速する変速機構３１０、無段変速電動機３１１、水分センサ３１２およびコンパクタビリティ測定用のエンコーダ３１３が配置してある。また、採取砂を圧縮するスクイズシリンダ３１４と砂かきあるいは邪魔板としてスクレープシリンダ３１５がある。計測する砂性状は、水分、砂温およびコンパクタビリティである。
【００１９】
次にバッチ式混練機１の側壁及び造型機前の砂性状を測定して次回の混練にフィードバッグする方法を図４を用いて説明する。
まずバッチ式混練機排出時の砂性状目標値設定手段１１からバッチ式混練機排出時の砂性状目標値と、バッチ式混練機排出時の砂性状測定手段１２により砂性状測定値を収集し、バッチ式混練機排出時の砂性状測定時刻と共に砂性状測定値をバッチ式混練機排出時の測定値等記憶手段１３にて記憶する。
【００２０】
造型機前の砂性状測定手段１４により、造型機前の砂性状測定値を収集し、造型機前の砂性状測定時刻と共に砂性状測定値を造型機前の測定値等記憶手段１５にて記憶する。
【００２１】
造型機前の測定値等記憶手段１５のデータから、前回造型機前の砂性状測定時刻・測定値検索手段１６にて、前回造型機前の砂性状測定時刻・測定値を得る。前回造型機前測定時刻から輸送時間前のバッチ式混練機排出時刻の測定値検索手段１７で、前回造型機前の砂性状測定時刻と、所定のバッチ式混練機から造型機までの砂輸送時間から、その相当砂の混練時刻を算出し、バッチ式混練機排出時の測定値等記憶手段１２から、算出混練時刻におけるバッチ式混練機排出時の砂性状測定値を検索し読み出す。
【００２２】
算出した混練時刻におけるバッチ式混練機排出時の砂性状測定値と前回造型機前の砂性状測定値とから、砂輸送経路による砂性状測定値の変化量算出手段２０により、砂輸送経路による砂性状測定値の変化量を算出する。
【００２３】
造型機前の砂性状目標値設定手段１８から造型機前の砂性状目標値を得る。前回造型機前の砂性状測定値と目標値との偏差算出手段１９にて、造型機前の砂性状目標値と前回造型機前の砂性状測定値からその偏差を算出する。
【００２４】
算出混練時刻におけるバッチ式混練機排出時の砂性状測定値と造型機前の砂性状目標値との偏差の砂輸送経路による砂性状測定値の変化量補正手段２１にて、造型機前の砂性状測定値と目標値との偏差を砂輸送経路による砂性状測定値の変化量の比率で補正して、砂性状補正値を算出する。
【００２５】
前回バッチのバッチ式混練機砂性状目標値の記憶装置からの読出手段２２から前回バッチのバッチ式混練機砂性状目標値を求める。次バッチ混練の砂性状目標値算出手段２３にて、この砂性状目標値に砂性状補正値を反映して次バッチ砂性状目標値を決定する。そして、次バッチ混練制御手段２４にてバッチ式混練機の砂性状コントロールを実施する。
なお、実施例で採用した砂性状パラメータは、絶対測定であり、測定精度が高い、コンパクタビリティを採用し、バッチ式混練機への添加制御には、注水量とした。
【００２６】
【発明の効果】
以上の説明から明らかなように本発明は、造型機前排出の時刻及び砂性状と、バッチ式混練機排出時の時刻及び砂性状を測定して混練砂輸送の時間要素を考慮した砂性状の補正をしてバッチ式混練機を制御コントロールするものであるから、造型機への砂投入に合わせた混練制御をすることができるようになり、造型機前の混練砂の砂性状を安定化させることができる。
【図面の簡単な説明】
【図１】本発明の実施例を示すブロック図である。
【図２】砂サンプリング機能付き砂性状計測機の構成図である。
【図３】微押圧砂サンプリング機能付き砂性状計測機の構成図である。
【図４】本発明の操作工程を示すフロ−チャ−ト図である。
【符号の説明】
１ バッチ式混練機
２ 砂サンプリング機能付き砂性状計測機
３ ６ 砂ホッパ
４ ７ ベルトフィ−ダ
５ 造型機
８ 微押圧砂サンプリング機能付き砂性状計測機
９ 制御盤
２０９ ３０９ サンプリングスクリュ−
２１０ ３１０ 変速機構
２１１ ３１１ 無段変速機
２１２ ３１２ 水分センサ−
２１３ ３１３ エンコ−ダ
２１４ ３１４ スクイズシリンダ
２１５ ３１５ スクレ−プシリンダ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention stabilizes the sand properties of the kneaded sand by sampling the sand at the time of discharging the kneaded sand kneaded by the batch-type kneader and measuring the sand properties and feeding back the result to the next sand kneading, The present invention relates to a method and an apparatus for stabilizing sand properties before a molding machine to be transported to a molding machine.
[0002]
[Prior art]
Conventionally, as a method and an apparatus for stabilizing the properties of sand before a molding machine, a method of increasing or decreasing a control parameter (for example, compactability) of a batch-type kneader according to the sand temperature of recovered sand (for example,
[0003]
[Patent Document 1]
Japanese Patent Publication No. 1-15825 (first and second pages, FIG. 1)
[Patent Document 2]
Japanese Patent Publication No. 3-76710 (first and second pages, FIG. 1)
[0004]
[Problems to be solved by the invention]
In the kneading control of molding sand as described above, water is evaporated during transportation of the kneading sand after kneading and discharging to the molding machine, or the sand temperature drop greatly affects the sand properties and becomes unstable even in the time factor, Although it is necessary to control the time accurately, it was not possible to stabilize the sand properties before the molding machine in consideration of these.
The present invention has been made in view of the above problems, and performs kneading control in consideration of the time factor between the sand properties of the kneading sand before the molding machine and the sand properties of the kneading sand at the time of discharging the batch-type kneading machine. An object of the present invention is to provide a method and an apparatus for stabilizing sand properties before a molding machine.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the sand property stabilizing method before the molding machine in the present invention measures the sand property before the molding machine before being discharged / conveyed from the batch type kneader and fed into the molding machine. And a step of feeding back the sand properties to the batch kneader. ADVANTAGE OF THE INVENTION According to this invention, since the sand property of the kneading sand before a molding machine is known, kneading control of a batch type kneading machine can be performed.
[0006]
In addition, in order to achieve the above object, the sand property stabilizing method before the molding machine in the present invention is a method in which the first sand property measuring machine controls the kneading to be discharged and conveyed from a batch-type kneading machine, and is fed into the molding machine. And a step of feeding back the sand property to the batch-type kneader by measuring the sand property before the molding machine by using a second sand property measuring machine. According to the present invention, since the sand properties of the kneaded sand before the molding machine can be known by the second sand property measuring machine, the kneading control of the batch type kneading machine can be performed.
[0007]
Further, in order to achieve the above object, the method for stabilizing sand properties before a molding machine according to the present invention includes a step of storing the sand properties at the time of discharging the batch type kneader together with the measurement / measurement time in the first sand property measuring machine. And a step of storing the sand properties before the molding machine before being discharged / conveyed from the batch-type kneading machine and fed into the molding machine together with the measurement / measurement time by the second sand property measuring machine; and Feeding back the sand properties to the batch-type kneader according to the measurement time. According to the present invention, since the sand property and time of the kneaded sand before the molding machine can be known by the second sand property measuring machine, the kneading control of the batch type kneading machine can be ensured.
[0008]
In addition, in order to achieve the above object, the method for stabilizing sand properties before the molding machine in the present invention is a method of measuring and measuring the sand properties at the time of discharging the batch-type kneader together with the measurement time, a target value, and molding. The process of storing the sand properties before the machine together with the measurement time and the target value, and the measurement of the sand properties at the time when the sand properties before the molding machine were measured and the time when the sand properties were discharged from the batch kneader before the transport time A step of searching for a value, a step of calculating a deviation between the previously measured value of the sand property before the molding machine and a target value, a step of calculating a change amount of the measured value of the sand property by the sand transport route, Reading the sand property target value of the batch-type kneading machine, calculating the sand property target value of the next batch-type kneading machine, and using the calculated sand property target value for the next batch kneading. And kneading by mixing. In the present invention, the variation of the measured value of the sand property due to the sand transport path of the deviation between the measured value of the sand property at the time of discharge of the batch-type kneader at the calculated kneading time and the target value of the sand property before the molding machine is corrected. And the step of performing. In addition, when using a 1st sand property measuring device and a 2nd sand property measuring device, the sampling method differs and the same measuring method can be used. ADVANTAGE OF THE INVENTION According to this invention, the sand before a molding machine and the sampling sand of a batch type kneader can be handled at the same level, without changing a property.
That is, in the present invention, the kneading sand before the molding machine by sampling in a state where pressure is not normally applied and the sampling in a state where pressure is applied by centrifugal force due to rotation of a scraper, a tire, a screw, and the like. Sand from the batch-type kneader according to the above can be sampled sand at the same level.
[0009]
In order to achieve the above object, the sand property stabilizing method before the molding machine in the present invention measures the time at which the kneaded sand is discharged from the batch-type kneader and the sand property of the kneaded sand, and stores this. Measuring the sand properties of the kneading sand and the time at which the kneading sand is discharged to the molding machine and storing the same, and discharging the batch-type kneading machine before the transportation time from the previous measurement time before the molding machine. From the measured value of the sand property measurement time and the sand transport time from the batch-type kneader to the molding machine, the corresponding sand kneading time is calculated, and the sand property measurement at the time of the batch-type kneader discharge at the calculated kneading time is searched. A step of reading, and a step of calculating a change amount of the sand property measured value by the sand transport route from the sand property measured value at the calculated batch type kneading machine discharge time and the sand property measured value before the previous molding machine; and Sand texture The process of calculating the deviation from the sand property measurement time and measurement value before the previous molding machine and the deviation between the sand property measurement value and the target value before the previous molding machine Calculating the sand property correction value by correcting the sand property correction value in the previous batch kneading by reflecting the sand property correction value to the sand property target value of the next batch kneading from the storage of the sand property target value of the previous batch kneading. Calculating the value and controlling the sand properties of the batch-type kneader at the time of the next batch kneading.
[0010]
On the other hand, the sand property stabilizing device before the molding machine in the present invention is a device for stabilizing the sand property before the molding machine of the sand transported from the batch-type kneading machine to the molding machine through transportation, and is a batch-type kneading machine. It is characterized by comprising a sand property measuring machine with a sand sampling mechanism installed on the side wall, and a sand property measuring machine with a fine pressing sand sampling function arranged in front of the molding machine.
[0011]
Further, the sand property stabilizing device before the molding machine in the present invention is a device for stabilizing the sand property before the molding machine of the sand transported from the batch-type kneader to the molding machine through the sand transport path, and is a batch type. A first sand property measuring machine with a sand sampling mechanism installed on the side wall of the kneading machine, and a second sand property measuring machine with a sand sampling function arranged before the molding machine, wherein the sand before the molding machine and the batch type The sampling sand of the kneader is collected so that it can be handled at the same level without changing its properties.
[0012]
Furthermore, the sand property stabilizing device before the molding machine in the present invention is a device that measures the sand properties before the molding machine and feeds back to the kneading process, which stabilizes the sand properties before the molding machine,
Sand property measuring means at the time of discharging the batch type kneading machine, storage means such as measured values at the time of discharging the batch type kneading machine, sand property measuring means before the molding machine, storage means such as measured values before the molding machine, and the last molding A means for retrieving the measured value of the batch-type kneader before the transport time from the pre-machine measurement time, a means for calculating a deviation between the sand property measured value and the target value before the previous molding machine, and a sand property measurement value for the sand transport route. Change amount calculating means;
Means for correcting the variation of the sand property measured value by the sand transport route of the deviation between the sand property measured value at the time of the calculated kneading time and the sand property measured value at the time of discharge of the batch-type kneader and the sand property target value before the molding machine; It is characterized by comprising a means for reading the sand property target value of the kneader from the storage device, a means for calculating a sand property target value for the next batch kneading, and a next batch kneading control means.
[0013]
The sand property stabilizing device before the molding machine in the present invention is provided on the side wall of the batch-type kneading machine, and measures the time at the time of discharging the batch-type kneading machine and the sand property at the time of discharging the batch-type kneading machine. Measurement means, storage means such as measured values at the time of discharging the batch-type kneading machine, provided before the molding machine, sand property measurement means before the molding machine to measure the time and sand properties at the time of kneading sand discharge before the molding machine And storage means such as measured values before the molding machine, retrieval means of the batch-type kneading machine discharge time and sand property measurement value before the transport time from the previous measurement time before the molding machine, and the sand property measurement value before the previous molding machine Means for calculating a deviation from a target value, means for calculating the amount of change in the sand property measured value by the sand transport route, the measured sand property value at the time of discharge of the batch-type kneader at the calculated kneading time, and the desired sand property value before the molding machine Of variation of sand property measured value by sand transport route with deviation from And a step for reading from the storage device the sand property target value of the batch type kneading machine of the previous batch, a sand property target value calculating means for the next batch kneading, and a next batch kneading control means. .
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, on the side wall of the batch-
[0015]
The tip of the belt feeder 7 is disposed above a sand hopper 6 disposed above the
[0016]
On the side wall of the sand hopper 6, a sand property measuring machine (hereinafter referred to as "second sand property measuring machine") 8 with a fine sampling electric cylinder 300 (see FIG. 3), which is provided with a sand sampling function, is attached. . In addition, the sand
[0017]
Next, FIG. 2 shows a specific example of the sand
[0018]
Next, FIG. 3 shows a specific example of the sand property measuring device 8 having a fine pressing sand sampling function for sampling and measuring the kneaded sand immediately before the
In order to provide a sand extruding function on the side wall of the
[0019]
Next, a method of measuring the side wall of the batch-
First, the sand property target value at the time of discharging the batch type kneader and the sand property measurement value by the sand property measuring means 12 at the time of discharging the batch type kneader are collected from the sand property target value setting means 11 at the time of discharging the batch type kneader, The sand property measurement value is stored together with the sand property measurement time at the time of discharge of the batch kneader in the storage means 13 such as the measured value at the time of discharge of the batch kneader.
[0020]
The sand property measurement unit 14 before the molding machine collects the sand property measurement value before the molding machine, and stores the sand property measurement value together with the sand property measurement time before the molding machine in the measurement value etc. storage unit 15 before the molding machine. I do.
[0021]
The sand property measurement time and measurement value search unit 16 before the previous molding machine is obtained from the data in the storage unit 15 such as the measured value before the molding machine by the sand property measurement time and measurement value search unit 16 before the previous molding machine. The measured value of the sand property before the previous molding machine and the sand transport time from the predetermined batch-type kneading machine to the molding machine are measured by the measured value search means 17 of the batch-type kneading machine discharge time before the transportation time from the previous measurement time before the molding machine. Then, the kneading time of the corresponding sand is calculated, and the sand property measurement value at the time of discharge of the batch type kneader at the calculated kneading time is retrieved and read from the storage means 12 such as the measured value at the time of discharge of the batch type kneader.
[0022]
From the sand property measured value at the time of discharge of the batch-type kneader at the calculated kneading time and the sand property measured value before the previous molding machine, the change amount of the sand property measured value by the sand transport route calculating means 20 is used to calculate the sand by the sand transport route. The amount of change in the property measurement value is calculated.
[0023]
The sand property target value before the molding machine is obtained from the sand property target value setting means 18 before the molding machine. The deviation calculating means 19 between the sand property measurement value before the previous molding machine and the target value calculates the deviation from the sand property target value before the molding machine and the sand property measurement value before the previous molding machine.
[0024]
At the calculated kneading time, the deviation between the sand property measured value at the time of discharge of the batch-type kneader and the sand property target value before the molding machine is corrected by the sand property measurement value change amount correction means 21 for the sand property before the molding machine. The deviation between the measured property value and the target value is corrected by the ratio of the amount of change in the measured sand property value along the sand transport route to calculate a corrected sand property value.
[0025]
The sand property target value of the batch type kneader of the previous batch is obtained from the reading means 22 from the storage device of the sand property target value of the batch type kneader of the previous batch. The next batch sand property target value is determined by the next batch kneading sand property target value calculating means 23 by reflecting the sand property correction value on the sand property target value. Then, the next batch kneading control means 24 controls the sand properties of the batch kneader.
The sand property parameters used in the examples were absolute measurements, high measurement accuracy, and compactability were adopted, and the amount of water injected was used for addition control to the batch kneader.
[0026]
【The invention's effect】
As is apparent from the above description, the present invention measures the time and sand properties of the discharge before the molding machine, and the time and sand properties of the batch-type kneading machine to measure the sand property in consideration of the time factor of the kneading sand transport. Since the batch type kneading machine is controlled and controlled by making corrections, it becomes possible to perform kneading control in accordance with the introduction of sand into the molding machine, and stabilize the sand properties of the kneading sand before the molding machine. be able to.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a configuration diagram of a sand property measuring device with a sand sampling function.
FIG. 3 is a configuration diagram of a sand property measuring machine with a fine pressing sand sampling function.
FIG. 4 is a flowchart showing the operation steps of the present invention.
[Explanation of symbols]
DESCRIPTION OF
210 310 transmission mechanism 211 311 continuously variable transmission 212 312 moisture sensor
213 313
Claims (11)
前記前回の造型機前の砂性状の測定値と目標値との偏差を算出する工程と、
砂輸送経路による砂性状の測定値の変化量を算出する工程と、
前回のバッチ式混練機の砂性状の目標値を読出す工程と、
次回のバッチ式混練機の砂性状の目標値を算出する工程と、
該算出された砂性状の目標値を次バッチ混練に用いて混練する工程と、
を備えたことを特徴とする造型機前の砂性状安定化方法。The process of storing the sand properties at the time of discharging the batch type kneader with the measurement / measurement time and the target value, the step of storing the sand properties before the molding machine with the measurement / measurement time and the target value, and the process of storing the sand before the previous molding machine A step of searching for a measured value of the sand property at the time discharged from the batch-type kneader before the transport time from the time when the property was measured,
Calculating the deviation between the sand property measurement value and the target value before the previous molding machine,
Calculating a change amount of the measured value of the sand property by the sand transport route;
A step of reading the target value of the sand property of the previous batch kneader;
A step of calculating the target value of the sand property of the next batch type kneader;
Kneading using the calculated sand property target value for the next batch kneading,
A method for stabilizing sand properties before a molding machine, comprising:
バッチ式混練機から混練砂が排出される時刻と混練砂の砂性状を測定すると共にこれを記憶する工程と、前記混練砂が前記造型機に排出される時刻と混練砂の砂性状を測定すると共にこれを記憶する工程と、前回造型機前測定時刻から輸送時間前のバッチ式混練機排出時刻の測定値から砂性状測定時刻とバッチ式混練機から造型機までの砂輸送時間からその相当砂の混練時刻を算出すると共に該算出混練時刻におけるバッチ式混練機排出時の砂性状測定を検索し読み出す工程と、算出したバッチ式混練機排出時刻における砂性状測定値と前回造型機前の砂性状測定値とから砂輸送経路による砂性状測定値の変化量を算出する工程と、造型機前の砂性状目標値を前回造型機前の砂性状測定時刻及び測定値からその偏差を算出する工程と、前回造型機前の砂性状測定値と目標値との偏差を砂輸送経路による砂性状測定値の変化量の比率で補正して砂性状補正値を算出する工程と、前回バッチ混練の砂性状目標値の記憶から次バッチ混練の砂性状目標値に前記砂性状補正値を反映して次バッチ砂性状目標値を算出して、次バッチ混練の際にバッチ式混練機の砂性状コントロールをする工程と、を具備することを特徴とする造型機前の砂性状安定化方法。The sand at the time of discharge of the kneaded sand mixed by the batch type kneading machine is sampled, the sand properties are measured, and the results are fed back to the next sand kneading to stabilize the sand properties of the kneading sand and transported to the molding machine. Sand property stabilization method before the molding machine to
A step of measuring and storing the time at which the kneading sand is discharged from the batch-type kneading machine and the sand properties of the kneading sand, and measuring the time at which the kneading sand is discharged to the molding machine and the sand properties of the kneading sand. And the step of storing the same, and the sand property measurement time from the measured value of the batch type kneader discharge time before the transport time before the measurement time before the molding machine and the sand transport time from the batch type kneader to the molding machine, and the corresponding sand. Calculating the kneading time and searching and reading the sand property measurement at the time of discharge of the batch-type kneader at the calculated kneading time, and the calculated sand property value at the batch-type kneader discharge time and the sand property before the previous molding machine. A step of calculating a change amount of the sand property measured value by the sand transport route from the measured value, and a step of calculating a deviation of the sand property target value before the molding machine from the sand property measurement time and the measured value before the previous molding machine. , Last build A step of calculating the sand property correction value by correcting the deviation between the sand property measurement value before the machine and the target value by a ratio of a change amount of the sand property measurement value by the sand transport route, and a step of calculating the sand property target value of the previous batch kneading. Calculating the next batch sand property target value by reflecting the sand property correction value to the sand property target value of the next batch kneading from storage, and controlling the sand property of the batch type kneading machine at the time of the next batch kneading, A method for stabilizing sand properties before a molding machine, comprising:
バッチ式混練機排出時の砂性状測定手段と、バッチ式混練機排出時の測定値等記憶手段と、造型機前の砂性状測定手段と、造型機前の測定値等記憶手段と、前回造型機前測定時刻から輸送時間前のバッチ式混練機排出時刻の測定値検索手段と、前回造型機前の砂性状測定値と目標値との偏差算出手段と、砂輸送経路による砂性状測定値の変化量算出手段と、 算出された混練時刻におけるバッチ式混練機排出時の砂性状測定値と造型機前の砂性状目標値との偏差の砂輸送経路による砂性状測定値の変化量補正手段と、前回バッチのバッチ式混練機砂性状目標値の記憶装置からの読出手段と、次バッチ混練の砂性状目標値算出手段と、次バッチ混練制御手段と、を具備したことを特徴とする造型機前の砂性状安定化装置。Measure the sand properties before the molding machine, feedback to the kneading process, a device to stabilize the sand properties before the molding machine,
Sand property measuring means at the time of discharging the batch type kneading machine, storage means such as measured values at the time of discharging the batch type kneading machine, sand property measuring means before the molding machine, storage means such as measured values before the molding machine, and the last molding A means for retrieving the measured value of the batch-type kneader before the transport time from the pre-machine measurement time, a means for calculating a deviation between the sand property measured value and the target value before the previous molding machine, and a sand property measurement value for the sand transport route. A change amount calculating means, and a sand property measurement value change amount correcting means of a deviation between the sand property measured value at the calculated kneading time and the sand property target value at the time of discharging the batch type kneader and the sand property target value before the molding machine, A molding machine comprising: a batch type kneading machine for a previous batch; a means for reading sand property target values from a storage device; a means for calculating a sand property target value for the next batch kneading; and a next batch kneading control means. Previous sand property stabilizer.
バッチ式混練機の側壁に備えられて、バッチ式混練機排出時の時刻及び砂性状を測定するバッチ式混練機排出時の砂性状測定手段と、バッチ式混練機排出時の測定値等記憶手段と、造型機前に備えられて、造型機前の混練砂排出時の時刻及び砂性状を測定する造型機前の砂性状測定手段と、造型機前の測定値等記憶手段と、前回造型機前測定時刻から輸送時間前のバッチ式混練機排出時刻及び砂性状測定値の検索手段と、前回造型機前の砂性状測定値と目標値との偏差算出手段と、砂輸送経路による砂性状測定値の変化量算出手段と、算出された混練時刻におけるバッチ式混練機排出時の砂性状測定値と造型機前の砂性状目標値との偏差の砂輸送経路による砂性状測定値の変化量補正手段と、前回バッチのバッチ式混練機砂性状目標値の記憶装置からの読み出し手段と、次バッチ混練の砂性状目標値算出手段と、次バッチ混練制御手段と、を具備したことを特徴とする造型機前の砂性状安定化装置。The sand at the time of discharge of the kneaded sand mixed by the batch type kneading machine is sampled, the sand properties are measured, and the results are fed back to the next sand kneading to stabilize the sand properties of the kneading sand and transported to the molding machine. Sand property stabilizing device before the molding machine
Sand property measuring means at the time of discharge of the batch kneader, which is provided on the side wall of the batch kneader and measures the time and sand property at the time of discharge of the batch kneader, and storage means of measured values at the time of discharge of the batch kneader A sand property measuring means before the molding machine, which is provided in front of the molding machine and measures the time and sand properties at the time of kneading sand discharge before the molding machine; a storage means for measured values before the molding machine; Search means for batch-type kneading machine discharge time and sand property measurement value before transport time from previous measurement time and sand property measurement value, means for calculating deviation of sand property measurement value and target value before previous molding machine, and sand property measurement by sand transport route Means for calculating the change in the value of the sand, and correcting the change in the measured value of the sand property by the sand transport route of the deviation between the measured value of the sand property at the time of discharging the batch-type kneader at the calculated kneading time and the target value of the sand property before the molding machine. Means and storage of the sand property target value of the batch type kneader of the previous batch And placed these reading means, and sand properties target value calculation means of next batch kneading, sand properties before molding machine, characterized by comprising the following batch mixing control means, a stabilizing device.
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| JP2002295726A JP4129728B2 (en) | 2002-10-09 | 2002-10-09 | Method and apparatus for stabilizing sand properties before molding machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009166097A (en) * | 2008-01-17 | 2009-07-30 | Aisin Takaoka Ltd | Mull adjusting device and mull adjustment process of casting sand |
| JP2016501721A (en) * | 2012-10-04 | 2016-01-21 | 新東工業株式会社 | Equipment inspection system |
| WO2017195423A1 (en) * | 2016-05-11 | 2017-11-16 | 新東工業株式会社 | Property adjusting system and property adjusting method for kneaded sand |
-
2002
- 2002-10-09 JP JP2002295726A patent/JP4129728B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009166097A (en) * | 2008-01-17 | 2009-07-30 | Aisin Takaoka Ltd | Mull adjusting device and mull adjustment process of casting sand |
| JP2016501721A (en) * | 2012-10-04 | 2016-01-21 | 新東工業株式会社 | Equipment inspection system |
| JP2017144486A (en) * | 2012-10-04 | 2017-08-24 | 新東工業株式会社 | System for inspecting apparatus |
| WO2017195423A1 (en) * | 2016-05-11 | 2017-11-16 | 新東工業株式会社 | Property adjusting system and property adjusting method for kneaded sand |
| JPWO2017195423A1 (en) * | 2016-05-11 | 2019-03-14 | 新東工業株式会社 | Kneading sand property adjusting system and property adjusting method |
| TWI715731B (en) * | 2016-05-11 | 2021-01-11 | 日商新東工業股份有限公司 | Character adjustment system and method of mixed sand |
| US10967422B2 (en) | 2016-05-11 | 2021-04-06 | Sintokogio, Ltd. | Property adjusting system and property adjusting method for kneaded sand |
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| Publication number | Publication date |
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| JP4129728B2 (en) | 2008-08-06 |
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