JP2567659B2 - Method and apparatus for measuring compactability value of foundry sand - Google Patents
Method and apparatus for measuring compactability value of foundry sandInfo
- Publication number
- JP2567659B2 JP2567659B2 JP63106180A JP10618088A JP2567659B2 JP 2567659 B2 JP2567659 B2 JP 2567659B2 JP 63106180 A JP63106180 A JP 63106180A JP 10618088 A JP10618088 A JP 10618088A JP 2567659 B2 JP2567659 B2 JP 2567659B2
- Authority
- JP
- Japan
- Prior art keywords
- sand
- value
- measuring
- pressing
- molding sand
- 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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Description
【発明の詳細な説明】 〈産業上の利用分野〉 この発明は鋳物砂のコンパクタビリテイ値を測定する
鋳物砂のコンパクタビリテイ値測定方法及びその装置に
関する。Description: TECHNICAL FIELD The present invention relates to a compaction sand compaction value measuring method and apparatus for measuring compaction sand compaction value.
〈従来の技術〉 一般に、鋳物砂を鋳型造型に適した鋳物砂として調整
する場合、鋳物砂に適量の水およびバインダーを加えて
混練し、鋳物砂の造型性を表わすコンパクタビリテイ値
（以下、CB値と略称する）が所定の値となるように調整
が行われている。<Prior art> In general, when adjusting the molding sand as molding sand suitable for molding, kneading by adding an appropriate amount of water and a binder to the molding sand, a compactability value (hereinafter, The CB value) is adjusted to a predetermined value.
従来、この鋳造砂のCB値は、熟練作業者の勘により測
定されて管理されていたため、正確なCB値の把握が困難
であり、また自動化による無人測定は不可能であった。Conventionally, the CB value of this casting sand was measured and managed by the intuition of a skilled worker, so it was difficult to grasp the CB value accurately, and unattended measurement by automation was impossible.
そのため、ａ）ダマ崩し手段の備えられた鋳物砂供給
部、ｂ）鋳物砂を充填するための試験筒、ｃ）満空検知
手段、ｄ）スクレーパ、ｅ）加圧ヘツドを作動するため
の押圧機、ｆ）鋳物砂の圧縮量が測定できる計測機、を
具備した装置により、作業者の勘によらないで鋳造砂の
CB値を自動測定する方法が提案されている（例えば特開
昭59-220245号公報参照）。Therefore, a) a foundry sand supply unit equipped with a crushing device, b) a test cylinder for filling the foundry sand, c) a full-vacancy detecting device, d) a scraper, and e) a pressing force for operating a pressure head. Machine, f) a device equipped with a measuring machine capable of measuring the amount of compression of the foundry sand, without the operator's intuition.
A method for automatically measuring the CB value has been proposed (see, for example, JP-A-59-220245).
〈発明が解決しようとする課題〉 しかし、このような従来構成の鋳物砂のCB値測定方法
及びその装置にあつては、鋳物砂を充填する試験筒が、
鋳物砂供給部と押圧機との間を往復移動して計測が行わ
れており、可動部分や摺動部分が多く装置が複雑化する
とともに、粉塵環境のため装置の作動が不安定になり易
く、頻繁な保守点検を必要とし、かつ測定値の信頼性が
低下するという問題があつた。<Problems to be solved by the invention> However, in the CB value measuring method and apparatus for such molding sand of the conventional configuration, a test cylinder for filling the molding sand,
Measurements are performed by reciprocating between the foundry sand supply unit and the pressing machine, and there are many moving parts and sliding parts, which complicates the device and makes the operation of the device unstable due to the dust environment. However, there are problems that frequent maintenance and inspection are required and the reliability of measured values is reduced.
また、試験筒内面には、鋳物砂による摩擦やその腐食
性により、経時的に鋳物砂が食い込んで付着し、加圧ヘ
ツドと試験筒とのはめ合いに不具合が生じ、測定ができ
なくなるという問題があつた。Further, on the inner surface of the test cylinder, due to the friction and corrosiveness of the molding sand, the molding sand bites and adheres with time, causing a problem in the fitting between the pressure head and the test cylinder, which makes measurement impossible. I got it.
この発明は、従来技術の有するこのような問題点にか
んがみなされたものであり、その目的とするところは、
装置が簡潔に構成できるとともに、保守点検の手間を低
減でき、かつ正確にCB値の自動測定ができる鋳物砂のCB
値測定方法及びその装置を提供しようとするものであ
る。The present invention has been made in view of such problems of the prior art, and its object is to:
CB of foundry sand that can simplify the configuration of the device, reduce maintenance and inspection, and accurately and automatically measure CB value.
An object of the present invention is to provide a value measuring method and its device.
〈課題を解決するための手段〉 この発明は上記目的を達成するためになされたもので
あり、第１の発明の鋳物砂のコンパクタビリテイ値測定
方法は、移動可能な平面上に積重ね厚さが略均等になる
ように鋳物砂を展開し、上記鋳物砂を加圧ヘツドにより
押圧し、その押圧による上記鋳物砂の圧縮量を計量し
て、コンパクタビリテイ値を決定する。<Means for Solving the Problems> The present invention has been made to achieve the above object, and a method for measuring a compactability of a molding sand according to the first invention is a stacking thickness on a movable plane. The molding sand is developed so that the molding sand becomes substantially even, and the molding sand is pressed by the pressure head, and the compression amount of the molding sand by the pressing is measured to determine the compactability value.
第２の発明の鋳物砂のコンパクタビリテイ値測定装置
は、スクレーパ部と砂レベルセンサとを備え投入される
鋳物砂を一定の積重ね厚さに整える積厚調整シユート
と、上記積厚調整シユートにより積重ね厚さが整えられ
た鋳物砂を一方向へ搬送して計測位置に移動させる移動
手段と、加圧ヘツドを備えその加圧ヘツドにより上記計
測位置に移動した鋳物砂を押圧圧縮する押圧手段と、上
記加圧ヘツドの押圧による鋳物砂の圧縮量を計量する計
量手段と、を備えている。The molding sand compactor value measuring device of the second invention is provided with a stacking thickness adjusting sheet for adjusting the casting sand to be put into a constant stacking thickness, comprising a scraper section and a sand level sensor, and the stacking thickness adjusting sheet. Moving means for moving the molding sand having the stacked thickness adjusted in one direction to move it to the measuring position, and pressing means for pressing and compressing the molding sand moved to the measuring position by the pressing head. Measuring means for measuring the amount of compression of the foundry sand by the pressing of the pressure head.
〈作用〉 この発明の作用は、先ず鋳物砂が積厚調整シユートに
より移動手段上に集積される。集積された鋳物砂は、移
動手段の作動によりスクレーパ部によつて一定の積重ね
厚さに整えられ、計測位置に展開する。<Operation> In the operation of the present invention, first, the foundry sand is accumulated on the moving means by the stack thickness adjusting shout. The accumulated foundry sand is adjusted to a certain stacking thickness by the scraper section by the operation of the moving means, and is spread to the measurement position.
そして、鋳物砂は計測位置において加圧ヘツドにより
押圧圧縮され、その圧縮量を計量手段により計量して、
CB値を決定する。Then, the foundry sand is pressed and compressed by the pressure head at the measurement position, and the amount of compression is measured by the measuring means,
Determine the CB value.
〈実施例〉 以下、この発明の構成を実施例に基づいて説明する。<Example> Hereinafter, the structure of this invention is demonstrated based on an Example.
第１図は本発明の実施例のCB値測定装置の正断面図、
第２図はその側断面図である。図に示すCB値測定装置10
は、スクレーパ部16,砂レベルセンサ17を備えた積厚調
整シユート15と、基台11上に構成された移動手段である
コンベヤ20と、加圧ヘツド26を備えた押圧手段25と、計
量手段である変位センサ30とから主に構成されている。FIG. 1 is a front sectional view of a CB value measuring device according to an embodiment of the present invention,
FIG. 2 is a side sectional view thereof. CB value measuring device 10 shown
Is a stacking thickness adjusting sheet 15 including a scraper section 16 and a sand level sensor 17, a conveyor 20 which is a moving unit configured on the base 11, a pressing unit 25 including a pressure head 26, and a weighing unit. Is mainly composed of the displacement sensor 30.
積厚調整シユート15は、コンベヤ20の上流部上に配設
されており、積厚調整シユート15の下部開口の下流側
は、コンベヤ20上面と所定間隔をおいて間隙状に形成さ
れたスクレーパ部16が設けられている。また、積厚調整
シユート15の所定の高さ位置には、投入される鋳物砂Ａ
内の水分を検知して、満砂信号を出力する砂レベルセン
サ17が配設されている。The stack thickness adjusting shute 15 is disposed on the upstream portion of the conveyor 20, and the downstream side of the lower opening of the stack thickness adjusting shute 15 is a scraper portion formed in a gap shape with a predetermined distance from the upper surface of the conveyor 20. 16 are provided. In addition, at the predetermined height position of the stack thickness adjusting shute 15, the casting sand A to be fed is
A sand level sensor 17 is provided which detects moisture in the interior and outputs a full sand signal.
コンベヤ20は、実施例ではポリエステル繊維を芯材と
するポリウレタン樹脂製の無端状ベルトからなり、図示
しない駆動源により駆動されて、第１図の矢印方向へ所
定の距離だけ間欠的に移動するように構成されている。
また、コンベヤ20上面の両側部には、その移動方向に延
びて相対した所定の高さの１対の側板21が、フレーム14
により立設されている。In the embodiment, the conveyor 20 is composed of an endless belt made of polyurethane resin having a polyester fiber as a core material, and is driven by a drive source (not shown) to intermittently move a predetermined distance in the direction of the arrow in FIG. Is configured.
Further, on both sides of the upper surface of the conveyor 20, a pair of side plates 21 extending in the moving direction and facing each other and having a predetermined height are provided.
It is erected by.
押圧手段25は、加圧ヘツド26と加圧ヘツド26を上下方
向に駆動する空気圧シリンダ27とから構成されている。
この空気圧シリンダ27は、基台11上のフレーム12上部に
設けられた取付板13に固定されており、そのロツドの下
端部に加圧ヘツド26が取付けられて、コンベヤ20上の計
測位置Ｂ上方に配設されている。また、計測位置Ｂのコ
ンベヤ20下面には、下降した加圧ヘツド26と鋳物砂Ａ及
びコンベヤ20を介して相対する受台28が配設されてい
る。The pressing means 25 includes a pressure head 26 and a pneumatic cylinder 27 that drives the pressure head 26 in the vertical direction.
The pneumatic cylinder 27 is fixed to a mounting plate 13 provided on an upper portion of the frame 12 on the base 11, and a pressure head 26 is attached to a lower end portion of the rod so as to be above the measurement position B on the conveyor 20. It is installed in. Further, on the lower surface of the conveyor 20 at the measurement position B, a pedestal 28 is provided which faces the pressure head 26, the molding sand A, and the conveyor 20 which have descended.
変位センサ30は、実施例では直線摺動形のポテンシヨ
メータからなり、加圧ヘツド26に連結部材31により連結
されるとともに、加圧ヘツド26に平行して上下方向に摺
動するように配設されている。そして、変位センサ30
は、加圧ヘツド26に連動してその変位量に対応した電圧
信号を出力するように構成されている。The displacement sensor 30 is a linear sliding potentiometer in the embodiment, is connected to the pressure head 26 by a connecting member 31, and is arranged so as to slide in the vertical direction in parallel with the pressure head 26. It is set up. And the displacement sensor 30
Is configured to output a voltage signal corresponding to the displacement amount in association with the pressurizing head 26.
このように構成されたCB値測定装置10は、CB値自動調
整装置の測定装置として設備される。The CB value measuring device 10 thus configured is installed as a measuring device of the CB value automatic adjusting device.
第３図はCB値測定装置10を設備したCB値自動調整装置
を示す全体構成図であり、鋳物砂を一時貯溜するホツパ
１と、混練機２と、混練機２へ注水する注水ノズル４
と、混練機２の吐出口３に連設されたCB値測定装置10
と、装置全体を制御する制御装置５とから構成されてい
る。そして、CB値測定装置10の砂レベルセンサ17,変位
センサ30は、各々制御装置５に接続されており、また、
コンベヤ20,空気圧シリンダ27は制御装置５に接続され
て、各々駆動制御されるように形成されている。FIG. 3 is an overall configuration diagram showing a CB value automatic adjusting device equipped with the CB value measuring device 10, a hopper 1 for temporarily storing foundry sand, a kneading machine 2, and a water injection nozzle 4 for injecting water into the kneading machine 2.
And a CB value measuring device 10 connected to the discharge port 3 of the kneader 2
And a control device 5 for controlling the entire device. The sand level sensor 17 and the displacement sensor 30 of the CB value measuring device 10 are respectively connected to the control device 5, and
The conveyor 20 and the pneumatic cylinder 27 are connected to the control device 5 and are configured to be driven and controlled respectively.
このCB値自動調整装置の制御装置５は、混練機制御
盤，シーケンサー，演算装置,AD変換器等を備えてお
り、砂レベルセンサ17よりの満砂信号、及び変位センサ
30よりの電圧信号を入力するとともに、コンベヤ20の間
欠運転、空気圧シリンダ27の上下駆動、混練機２の運転
及び吐出口３より積厚調整シユート15への鋳物砂Ａの投
入、注水ノズル４よりの注水等の制御を行うように構成
されている。The control device 5 of this automatic CB value adjusting device is equipped with a kneading machine control panel, a sequencer, a computing device, an AD converter, etc., and a full sand signal from the sand level sensor 17 and a displacement sensor.
While inputting a voltage signal from 30, the conveyor 20 is intermittently operated, the pneumatic cylinder 27 is vertically driven, the kneading machine 2 is operated, and the molding sand A is charged into the stack thickness adjusting shute 15 from the discharge port 3 and from the water injection nozzle 4. It is configured to control the water injection and the like.
以下、CB値自動調整装置の動作を、CB値測定装置10の
動作を主体として説明する。Hereinafter, the operation of the CB value automatic adjusting device will be described mainly with respect to the operation of the CB value measuring device 10.
第４図はCB値自動調整装置の制御のフローチャートで
あり、先ず、ホツパ１より所定量の鋳物砂、及びバイン
ダーを混練機２に投入して混練を開始する。このとき、
CB値測定装置10の積厚調整シユート15内には鋳物砂Ａが
なく、コンベヤ20は停止しており、加圧ヘツド26は上限
位置にある。FIG. 4 is a flow chart of control of the CB value automatic adjusting device. First, a predetermined amount of molding sand and a binder are put into the kneading machine 2 from the hopper 1 to start kneading. At this time,
There is no foundry sand A in the stack thickness adjusting short 15 of the CB value measuring device 10, the conveyor 20 is stopped, and the pressure head 26 is at the upper limit position.
そして、混練開始とともに注水ノズル４から時間Ｔ1
秒の初期注水が行われる。この注水は、目標CB値より若
干少なめの水量となるように、注水時間が設定されてい
る。Then, with the start of kneading, the time T 1
Second initial water injection is performed. The water injection time is set so that this water injection will be slightly less than the target CB value.
次いで、予め設定した時間Ｔ2秒の混練が終ると、混
練機２の吐出口３が開かれ、注水混練された砂が鋳物砂
Ａとして積厚調整シユート15に投入される。このとき、
鋳物砂Ａは、積厚調整シユート15内においてコンベヤ20
上に集積され、その量が所定量以上にあると、砂レベル
センサ17は満砂信号を出力する。満砂信号が出力される
と、混練機２の吐出口３は閉塞され、コンベヤ20は作動
して矢印方向に所定距離移動して停止する。Next, when the kneading for a preset time T 2 seconds is completed, the discharge port 3 of the kneading machine 2 is opened, and the water-mixed sand is charged as casting sand A into the stack thickness adjusting short 15. At this time,
The foundry sand A is transferred to the conveyor 20 in the stack thickness adjustment short 15.
The sand level sensor 17 outputs a full sand signal when the sand level sensor 17 is accumulated on the upper side and the amount is above a predetermined amount. When the full sand signal is output, the discharge port 3 of the kneading machine 2 is closed, and the conveyor 20 operates and moves a predetermined distance in the arrow direction and stops.
このコンベヤ20の作動に伴つて、積厚調整シユート15
の下部にある鋳物砂Ａは矢印方向に移動して、それにつ
れて、集積されていた鋳物砂Ａは順次下降する。そし
て、移動する鋳物砂Ａは、スクレーパ部16によりその上
面高さが規定され、両側板21に側方に支持されて、コン
ベヤ20上に一定の積重ね厚さとなつて展開し、測定位置
Ｂ、即ち受台27上であつて加圧ヘツド26下方に停止す
る。With the operation of the conveyor 20, the stack thickness adjustment sheet 15
Foundry sand A in the lower part of the figure moves in the direction of the arrow, and the foundry sand A that has accumulated gradually descends accordingly. Then, the moving molding sand A has its upper surface height regulated by the scraper portion 16, is laterally supported by both side plates 21, and develops on the conveyor 20 to have a constant stacking thickness. That is, it stops on the pedestal 27 and below the pressure head 26.
続いて、空気圧シリンダ27が作動して加圧ヘツド26を
下降させ、下降を始めた加圧ヘツド26は、コンベヤ20上
に展開された鋳物砂Ａの上面（第５図のｈ1相当）にお
いて鋳物砂Ａと当接し、鋳物砂Ａは一定圧力で下降する
加圧ヘツド26により圧縮される。その押圧直後に、鋳物
砂Ａ内において、第５図の点線矢印に示すように砂逃げ
が生じるが、加圧ヘツド26下方の砂の流動は直ちに安定
し、加圧ヘツド26は鋳物砂Ａの圧縮高さｈ2において停
止する。Then, the pneumatic cylinder 27 operates to lower the pressure head 26, and the pressure head 26 that has started to descend is on the upper surface (corresponding to h 1 in FIG. 5) of the molding sand A spread on the conveyor 20. The molding sand A is brought into contact with the molding sand A, and the molding sand A is compressed by the pressure head 26 descending at a constant pressure. Immediately after the pressing, sand escape occurs in the molding sand A as shown by the dotted arrow in FIG. 5, but the flow of sand below the pressure head 26 immediately stabilizes, and the pressure head 26 is Stop at compression height h 2 .
この高さｈ1−ｈ2の圧縮量は、変位センサ30の変位量
として表れ、鋳物砂Ａの電圧信号化されたCB1値（第１
次CB値）として出力される。The amount of compression of this height h 1 -h 2 appears as the amount of displacement of the displacement sensor 30, and is the CB 1 value (first
It is output as the next CB value).
これにより制御装置５は、目標CB値とCB1値とを比較
して、その差に対応する注水時間Ｔ3秒を算出し、次混
練砂へ時間Ｔ3秒の追加注水が行われる。そして、加圧
ヘツド26は上限位置へ上昇し、追加注水が終ると混練機
２は時間Ｔ4秒の混練を行う。Thus, the control unit 5 compares the target CB value with CB 1 value, to calculate a 3-second injection time T corresponding to the difference, additional water injection into the next kneading sand time T 3 seconds is performed. Then, the pressurizing head 26 rises to the upper limit position, and when the additional water injection is completed, the kneading machine 2 performs kneading for time T 4 seconds.
続いて、上述の工程に準じて、追加注水，混練された
鋳物砂Ａを計測位置Ｂへ搬送し、その鋳物砂ＡのCB2値
を測定する（この間に、先に計測した鋳物砂Ａはコンベ
ヤ20の作動に伴つて排砂される）。そして、CB2値が目
標CB値か、若しくはそれに近似のCB値であれば、次サイ
クルの初期注水時間Ｔ1秒を決定するとともに、コンベ
ヤ20を作動させて砂出しを行い、注水，混練,CB値測定
からなるCB値自動調整の１サイクルが終了する。Then, according to the above-mentioned process, the additional injection and kneading of the foundry sand A is conveyed to the measurement position B, and the CB 2 value of the foundry sand A is measured (while the foundry sand A previously measured is Sand is discharged along with the operation of the conveyor 20). Then, if the CB 2 value is the target CB value or a CB value close to the target CB value, the initial water injection time T 1 second of the next cycle is determined, and the conveyor 20 is operated to perform sand removal, water injection, kneading, One cycle of CB value automatic adjustment consisting of CB value measurement is completed.
このCB値測定方法及びその装置においては、測定され
たCB値の精度を高めるため、以下のような実験が行われ
た。In this CB value measuring method and apparatus, the following experiment was conducted in order to improve the accuracy of the measured CB value.
即ち、CB値の精度要因となる加圧ヘツド26の直径D,鋳
物砂Ａの積厚ｈ1，加圧圧力Ｐを変化させながらCB値の
測定を行うとともに、並行して汎用されているランマー
方式によるCB値測定を行い、その間の相関を確認する実
験を行つた。That is, the CB value is measured while changing the diameter D of the pressurizing head 26, the product thickness h 1 of the molding sand A, and the pressurizing pressure P, which are the factors that affect the accuracy of the CB value. The CB value was measured by the method and an experiment was performed to confirm the correlation between them.
なお、「ランマー方式」とは、鋳物砂を６メツシユの
ふるいを通して試験筒（高さ100mm,直径50mm）に満た
し、余分の砂をかき落した後、ランマーで３回つき固
め、そのときの鋳物砂の圧縮量を元の砂の高さで割り、
パーセントで表したものである。In addition, the "rammer method" means that the test sand (height 100 mm, diameter 50 mm) is filled with casting sand through a 6-mesh sieve, the excess sand is scraped off, and then the sand is solidified three times with a rammer. Divide the amount of sand compression by the height of the original sand,
It is expressed as a percentage.
この実験では、積厚ｈ1を25mm,40mm,55mmの３種、直
径Ｄを40mm,80mmの２種設定し、それに加圧圧力Ｐを変
化させることにより、鋳物砂Ａの加圧面に加わる面圧を
変化させて第１表に示す相関結果が得られた。In this experiment, three kinds of stacked thickness h 1 of 25 mm, 40 mm and 55 mm and two kinds of diameter D of 40 mm and 80 mm are set, and the pressing pressure P is changed to the surface added to the pressing surface of the casting sand A. The correlation results shown in Table 1 were obtained by changing the pressure.
第１表によれば、面圧は0.094kg/cm2以上であれば良
好な相関が得られ、積厚ｈ1は40mm以上（少なくとも25m
m以下を除く）あれば実用的な相関が得られた。 According to Table 1, a good correlation is obtained when the surface pressure is 0.094 kg / cm 2 or more, and the product thickness h 1 is 40 mm or more (at least 25 m
Practical correlation was obtained if m or less).
第６図は、上記実施例の一つである加圧圧力Ｐ＝0.75
kg/cm2，面圧＝0.188kg/cm2，積厚ｈ1＝40mm,直径Ｄ＝4
0mmの設定による計量値の相関グラフであり、ランマー
方式による測定CB値との高い相関を示している。FIG. 6 shows the pressurizing pressure P = 0.75 which is one of the above embodiments.
kg / cm 2 , surface pressure = 0.188kg / cm 2 , stacking thickness h 1 = 40mm, diameter D = 4
It is a correlation graph of the measured value by the setting of 0 mm, and shows a high correlation with the measured CB value by the Rammer method.
なお、この発明は上述の説明及び図例に限定されるこ
となく、この発明の技術的思想から逸脱しない範囲にお
いて、その実施態様を変更することができる。例えば、
スクレーパ部は、積厚調整シユートと別体に形成された
ものであつても、同様の作用効果を奏する。It should be noted that the present invention is not limited to the above description and the drawings, and the embodiment can be modified without departing from the technical idea of the present invention. For example,
Even if the scraper part is formed separately from the stacking thickness adjusting shout, the same effect is obtained.
また、移動手段は、一定平面上を回動するターンテー
ブルであつてもよい。The moving means may be a turntable that rotates on a fixed plane.
更に、加圧ヘツドの平面形状は、円形以外の形状をと
ることが可能である。Furthermore, the planar shape of the pressure head can take a shape other than a circle.
〈発明の効果〉 以上説明したように本発明によれば、一方向へ作動す
る移動手段により鋳物砂を搬送して、自動的に鋳物砂の
CB値を反復測定することができる。<Effects of the Invention> As described above, according to the present invention, the molding sand is conveyed by the moving means that operates in one direction, and the molding sand is automatically
The CB value can be measured repeatedly.
従って、従来例のように往復移動機構がなく、可動部
品や摺動部品の少ない簡潔で小形な装置を構成でき、か
つ粉塵環境による装置の作動不安定の発生を回避でき、
保守点検の手間を低減することができるとともに、高い
測定信頼性を得ることができる。Therefore, unlike the conventional example, there is no reciprocating mechanism, it is possible to configure a simple and small device with few moving parts and sliding parts, and avoid the occurrence of unstable operation of the device due to dust environment,
The time and effort required for maintenance and inspection can be reduced, and high measurement reliability can be obtained.
また、CB値測定に従来例に示す試験筒を用いることが
ないので、加圧ヘツドとのはめ合い不調による測定不能
の発生に煩わされることがない。Further, since the test cylinder shown in the conventional example is not used for the CB value measurement, there is no need to be bothered by the occurrence of the measurement failure due to the improper fitting with the pressure head.
第１図はこの発明の実施例の鋳物砂のコンパクタビリテ
イ値測定装置の正断面図、第２図はその側断面図、第３
図はこのコンパクタビリテイ値測定装置を設備したCB値
自動調整装置を示す全体構成図、第４図はそのCB値自動
調整装置の制御のフローチャート、第５図は加圧ヘツド
による鋳物砂の押圧圧縮を示す説明図、第６図は本測定
方法による計量手段の計量値とランマー方式による測定
CB値との相関を示すグラフである。 10……コンパクタビリテイ値測定装置、15……積厚調整
シユート、16……スクレーパ部、17……砂レベルセン
サ、20……コンベヤ（移動手段）、25……押圧手段、26
……加圧ヘツド、30……変位センサ（計量手段）。FIG. 1 is a front sectional view of a molding sand compactor value measuring device according to an embodiment of the present invention, FIG. 2 is a side sectional view thereof, and FIG.
The figure is an overall block diagram showing the CB value automatic adjusting device equipped with this compactor mobility value measuring device, Fig. 4 is a flow chart of the control of the CB value automatic adjusting device, and Fig. 5 is the pressing of the molding sand by the press head. FIG. 6 is an explanatory view showing compression, and FIG. 6 is a measurement value of the measuring means by this measuring method and measurement by the Rammer method.
It is a graph which shows correlation with a CB value. 10 …… Compactor variability value measuring device, 15 …… Stack thickness adjusting sheet, 16 …… Scraper part, 17 …… Sand level sensor, 20 …… Conveyor (moving means), 25 …… Pressing means, 26
...... Pressure head, 30 ...... Displacement sensor (measuring means).
Claims (2)
なるように鋳物砂を展開し、 前記鋳物砂を加圧ヘツドにより押圧し、 その押圧による前記鋳物砂の圧縮量を計量して、コンパ
クタビリテイ値を決定することを特徴とする鋳物砂のコ
ンパクタビリテイ値測定方法。Claim: What is claimed is: 1. A molding sand is spread on a movable plane so as to have a substantially uniform stacking thickness, the molding sand is pressed by a pressure head, and the compression amount of the molding sand by the pressing is measured. A method for measuring a compactability value of molding sand, which comprises determining a compactability value.
入される鋳物砂を一定の積重ね厚さに整える積厚調整シ
ユートと、 前記積厚調整シユートにより積重ね厚さが整えられた鋳
物砂を一方向へ搬送して計測位置に移動させる移動手段
と、 加圧ヘツドを備えその加圧ヘツドにより上記計測位置に
移動した鋳物砂を押圧圧縮する押圧手段と、 前記加圧ヘツドの押圧による鋳物砂の圧縮量を計量する
計量手段と、 を備えたことを特徴とする鋳物砂のコンパクタビリテイ
値測定装置。2. A stacking thickness adjusting shout having a scraper section and a sand level sensor for adjusting the casting sand to be put into a constant stacking thickness, and a casting sand having a stacking thickness adjusted by the stacking thickness adjusting shout. Moving means for moving in the direction to the measuring position, a pressing means provided with a pressing head for pressing and compressing the molding sand moved to the measuring position by the pressing head, and a molding sand by pressing the pressing head. A compacting device compactness value measuring device for foundry sand, comprising: a measuring means for measuring the amount of compression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63106180A JP2567659B2 (en) | 1988-04-27 | 1988-04-27 | Method and apparatus for measuring compactability value of foundry sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63106180A JP2567659B2 (en) | 1988-04-27 | 1988-04-27 | Method and apparatus for measuring compactability value of foundry sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01278934A JPH01278934A (en) | 1989-11-09 |
| JP2567659B2 true JP2567659B2 (en) | 1996-12-25 |
Family
ID=14427038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63106180A Expired - Fee Related JP2567659B2 (en) | 1988-04-27 | 1988-04-27 | Method and apparatus for measuring compactability value of foundry sand |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2567659B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH032242U (en) * | 1989-05-29 | 1991-01-10 | ||
| JPH07239322A (en) * | 1993-04-21 | 1995-09-12 | Mas Fab Gustav Eirich | Method and equipment for deciding molding characteristic of sand |
| CN108593543A (en) * | 2018-04-23 | 2018-09-28 | 绍兴市智能制造促进中心 | It is a kind of attached to metope to make mortar device for pressure measurement |
-
1988
- 1988-04-27 JP JP63106180A patent/JP2567659B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01278934A (en) | 1989-11-09 |
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