JP3182121B2 - Vibration method of foundry sand - Google Patents
Vibration method of foundry sandInfo
- Publication number
- JP3182121B2 JP3182121B2 JP35276097A JP35276097A JP3182121B2 JP 3182121 B2 JP3182121 B2 JP 3182121B2 JP 35276097 A JP35276097 A JP 35276097A JP 35276097 A JP35276097 A JP 35276097A JP 3182121 B2 JP3182121 B2 JP 3182121B2
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- molding sand
- sand
- foundry sand
- reciprocating
- 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.)
- Expired - Fee Related
Links
Landscapes
- Casting Devices For Molds (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、鋳造用の鋳物砂を
締め固める振動方法に関し、特に鋳物砂に付与する合成
振動の振動軌跡を所望のリサージュ図形とした鋳物砂の
振動方法等に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration method for compacting molding sand for casting, and more particularly to a method for vibrating molding sand in which a vibration trajectory of a synthetic vibration applied to the molding sand has a desired Lissajous figure.
【0002】[0002]
【従来の技術】鋳物砂を用いた鋳造において、鋳型を埋
設する鋳物砂を締め固め密に凝集させることは、成形さ
れる鋳物製品の形状精度、表面粗さ等を向上させる点か
ら非常に有効であり、良好な鋳物製品を成形するために
行われている。2. Description of the Related Art In casting using molding sand, compacting and agglomerating molding sand in which a mold is buried is very effective from the viewpoint of improving the shape accuracy, surface roughness, etc. of a molding product to be molded. It is performed in order to form a good casting product.
【0003】又、消失模型を用いた消失模型鋳造等にお
いては、鋳型模型が鋳物砂の内部に埋設されることか
ら、鋳物砂を収容した鋳型枠に外部から振動を与えるな
どして、鋳物砂を締め固めていた。In the vanishing model casting using the vanishing model, since the mold model is buried in the molding sand, the molding sand containing the molding sand is vibrated from the outside to give the casting sand. Was compacted.
【0004】このように外部から鋳物砂に振動を与える
振動装置としては、従来水平方向、あるいは上下方向に
作動するピストン機構を振動板に設置し、これらピスト
ン機構を作動させて振動板に固定させた鋳型枠内の鋳物
砂に微振動を与え、鋳物砂相互間の隙間を無くして凝集
させ、又鋳型模型の表面に鋳物砂を強固に付着させてい
た。As a vibrating device that vibrates the foundry sand from the outside as described above, conventionally, a piston mechanism that operates horizontally or vertically is installed on a diaphragm, and these piston mechanisms are operated to be fixed to the diaphragm. Micro-vibration is applied to the foundry sand in the mold frame to eliminate the gaps between the foundry sands and agglomerate them, and the foundry sand is firmly adhered to the surface of the mold model.
【0005】[0005]
【発明が解決しようとする課題】しかしながら、従来の
振動装置により発生する振動は一定の直線上を往復する
振動であり、振動が付与された鋳物砂は、付与された振
動方向に移動するのみである。例えば、X軸方向に振動
を与えた場合、鋳物砂は振動によってX軸と平行な方向
にのみ移動し他の方向へは移動することがほとんどな
い。したがって、鋳型模型がX軸方向に開口していれ
ば、X軸方向の振動を付与することにより鋳物砂が内部
に詰め込まれるが、例えばX軸以外の方向に開口してい
る場合は、内部に鋳物砂が入らず十分に鋳物砂が詰め込
まれない状態となっていた。更に振動は、振動の中心点
を中心にして左右均等であることから、常に一定の位置
で振動しているだけであり、所望の方向に鋳物砂を流動
させることはできなかった。However, the vibration generated by the conventional vibration device is a vibration that reciprocates on a fixed straight line, and the molding sand to which the vibration is applied only moves in the applied vibration direction. is there. For example, when vibration is applied in the X-axis direction, the foundry sand moves only in a direction parallel to the X-axis due to vibration, and hardly moves in other directions. Therefore, if the mold model is open in the X-axis direction, the molding sand is packed inside by applying vibration in the X-axis direction. For example, if the mold model is open in a direction other than the X-axis, There was no casting sand and the casting sand was not sufficiently packed. Furthermore, since the vibrations are even in the left and right directions with the center point of the vibrations as the center, they always vibrate only at a fixed position, and the molding sand cannot flow in a desired direction.
【0006】又、振動方向が一定である振動台で鋳物砂
を複数の方向へ振動させるため、鋳型枠の取りつけ方向
を変更させることがある。しかしながら、鋳型枠の重量
が数トンから数十トンになるような場合には鋳型枠の移
動は容易でなく、作業が大掛かりになってしまい、この
ような重量の大きな鋳型枠の取り付け方向を変えること
により振動の方向を変更させることは困難であった。Further, in order to vibrate the molding sand in a plurality of directions on a vibrating table having a constant vibration direction, the mounting direction of the mold frame may be changed. However, when the weight of the flask is from several tons to several tens of tons, it is not easy to move the flask, and the operation becomes large, and the mounting direction of such a heavy flask is changed. Therefore, it was difficult to change the direction of the vibration.
【0007】又、水平方向に加えられる振動では、鋳物
砂間に形成されている空隙内に振動を受けた鋳物砂が移
動して、鋳物砂が重力でその空隙内に落下するだけであ
り、垂直方向に積極的に力が付与されて鋳物砂が締め固
められるものではなかった。したがって、上方から押圧
したように鋳物砂を縦方向に密に固めることはできなか
った。[0007] In addition, the vibration applied in the horizontal direction only moves the molding sand that has been vibrated into the gap formed between the molding sands, and the molding sand drops into the gap by gravity. The molding sand was not compacted due to the force being applied positively in the vertical direction. Therefore, the molding sand could not be solidified in the vertical direction as if pressed from above.
【0008】又、水平方向に移動させるピストンシリン
ダ機構と上下方向に振動を発生させる振動機構を有する
振動装置の例があるが、通常水平方向に振動を与える機
構と垂直方向に振動を与える機構とは別個に作動させる
ため、二度の振動作業を行なわなければならず、更に横
方向に鋳物砂を移動させながら縦方向に鋳物砂を固める
ことはできず、縦方向に振動を与えて鋳物砂が締まった
ときに上部に隙間ができることがあった。Further, there are examples of a vibration device having a piston cylinder mechanism for moving in a horizontal direction and a vibration mechanism for generating vibration in an up and down direction, and a mechanism for normally giving vibration in a horizontal direction and a mechanism for giving vibration in a vertical direction. Since it is operated separately, it must be vibrated twice, and it is not possible to solidify the molding sand in the vertical direction while moving the molding sand in the horizontal direction. When tightened, there was a gap at the top.
【0009】このように、水平方向に振動を付与する振
動装置では、この振動装置の振動で鋳物砂が移動する方
向は水平で、しかも振動装置が振動する方向に限定され
る。振動装置の振動方向以外に鋳物砂を移動させたり、
殊に縦方向に鋳物砂を締め固めるには、あらためて鋳型
枠の取付位置を変更したり、垂直方向に振動する振動台
に換えて振動を付与させなければならなかった。As described above, in the vibration device that applies vibration in the horizontal direction, the direction in which the molding sand moves due to the vibration of the vibration device is horizontal, and is limited to the direction in which the vibration device vibrates. Move molding sand out of the vibration direction of the vibration device,
In particular, in order to compact the foundry sand in the vertical direction, it was necessary to change the mounting position of the flask again or to apply vibration instead of the vibrating table that vibrates vertically.
【0010】本発明は、鋳物砂を締め固める作業を容易
にし、確実に鋳型表面に鋳物砂を密着させる鋳物砂の振
動方法を提供することを目的とする。An object of the present invention is to provide a molding sand vibration method for facilitating the work of compacting molding sand and securely bringing the molding sand into close contact with the mold surface.
【0011】[0011]
【課題を解決するための手段】本発明は、上記課題を解
決するため、つぎのように鋳物砂の振動方法を構成し
た。すなわち、水平方向に振動させる往復動振動と垂直
方向に振動させる往復動振動とを互いに同期させて合成
し、合成振動の軌跡が所定の図形、例えばあるリサージ
ュ図形を形成するようにした。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a method for vibrating molding sand as follows. That is, the reciprocating vibration vibrating in the horizontal direction and the reciprocating vibration vibrating in the vertical direction are combined in synchronism with each other, and the trajectory of the combined vibration forms a predetermined figure, for example, a certain Lissajous figure.
【0012】この振動は、X−Y平面内の任意の方向に
設定された往復動振動にZ軸方向の往復動振動を加えた
振動であり、両者の片振幅、振動数等を適宜選択し、合
成された振動の軌跡が所定の形状を形成するようにし
た。This vibration is the vibration obtained by adding the reciprocating vibration in the Z-axis direction to the reciprocating vibration set in an arbitrary direction in the XY plane. The trajectory of the synthesized vibration forms a predetermined shape.
【0013】具体的な振動の条件としては、加速度の最
大値を4m/s(二乗)〜30m/s(二乗)とし、振
動数を25〜100Hzとし、片振幅を0.01mm〜
砂の平均直径の1.5倍とした値が好ましい。又振動波
形が形成するリサージュ図形にて、リサージュ図形の軸
の傾きΘ(シータ)がXY平面に対して15度から75
度傾斜し、かつ長さLに対する幅Wを0.5以下とし、
更に、付与する振動の加速度の波形を、矩形波、あるい
は図5、および図6に示すように波形の一方の側を垂直
に立てた鋸歯波とした。As specific conditions for vibration, the maximum value of acceleration is 4 m / s (square) to 30 m / s (square), the frequency is 25 to 100 Hz, and the half amplitude is 0.01 mm to
A value of 1.5 times the average diameter of the sand is preferable. In the Lissajous figure formed by the vibration waveform, the inclination Θ (theta) of the axis of the Lissajous figure is from 15 degrees to 75 degrees with respect to the XY plane.
Degree, and the width W with respect to the length L is 0.5 or less,
Further, the waveform of the acceleration of the vibration to be applied was a rectangular wave or a sawtooth wave having one side of the waveform set upright as shown in FIGS.
【0014】 加速度は4m/s(二乗)より小さいと
鋳物砂は十分移動せず、30m/s(二乗)を超えると
跳ねが生じ、固まらなくなる。また加速度の値を上記波
形に設定することにより、鋳物砂には衝撃的な振動が付
与され、鋳物砂を浮き上がらせて移動と凝集を容易、確
実にすることができる。振動数は25Hzより小さいと
鋳物砂が移動せず、100Hz以上では鋳物砂が追従せ
ず移動しなくなってしまう。片振幅は0.01mm以下
では小さすぎて鋳物砂が移動せず、砂の平均直径の1.
5倍をこえると、鋳物砂が跳ねてしまい、凝集されなく
なる。If the acceleration is less than 4 m / s (square), the foundry sand does not move sufficiently. If the acceleration exceeds 30 m / s (square), the molding sand bounces and does not solidify. By setting the value of the acceleration to the above-mentioned waveform, shocking vibration is given to the foundry sand, and the foundry sand is lifted up, so that movement and aggregation can be easily and reliably performed. If the frequency is less than 25 Hz, the molding sand does not move, and if the frequency is 100 Hz or more, the molding sand does not follow and does not move. If the half amplitude is less than 0.01 mm, the molding sand does not move because it is too small, and the average diameter of the sand is 1.
If it exceeds 5 times, the foundry sand will splash and will not be aggregated.
【0015】リサージュ図形の軸の傾きΘ(シータ)が
XY平面に対して75度を超えると鋳物砂の水平方向の
移動が不活発となり、又15度より小さいと、その場で
の往復運動となってこの場合も水平移動が不活発とな
り、又垂直方向の押し込み力が弱くなるためである。又
長さLに対する幅Wの値を0.5以上とすると、鋳物砂
が円を描くこととなりこの場合も、横方向への実質的な
移動が不活発となる。When the inclination Θ (theta) of the axis of the Lissajous figure exceeds 75 degrees with respect to the XY plane, the horizontal movement of the foundry sand becomes inactive. Also in this case, the horizontal movement becomes inactive and the pushing force in the vertical direction becomes weak. If the value of the width W with respect to the length L is 0.5 or more, the molding sand draws a circle, and in this case, the substantial movement in the lateral direction becomes inactive.
【0016】更に、振動成分(振動方向、周波数、位相
差等)の変更を連続して行なうこととした。これは、振
動を止めて鋳物砂の移動を停止させると、振動を再開さ
せても再開前に流動していた位置より上層の部分しか流
動せず、下部には凝集が途中で停止した層が形成されて
しまう。これにより、鋳物砂内に境界ができてしまい、
全体として鋳物砂の強度が弱められる結果となる。そこ
で、振動方向を変更する等振動成分の変動を連続して行
なわせることにより、このような境界層の発生を防止
し、鋳物砂の強度低下を防止することとした。Further, the change of the vibration component (vibration direction, frequency, phase difference, etc.) is continuously performed. This is because when the vibration is stopped and the movement of the foundry sand is stopped, even if the vibration is restarted, only the upper layer flows from the position where it had flowed before restarting, and the layer where aggregation stopped halfway was Will be formed. This creates a boundary in the foundry sand,
As a result, the strength of the foundry sand is reduced as a whole. Therefore, by continuously changing the vibration component such as changing the vibration direction, the generation of such a boundary layer is prevented, and the strength of the foundry sand is prevented from lowering.
【0017】[0017]
【0018】[0018]
【発明の実施の形態】次に、本発明にかかる振動方法
を、振動を発生させる装置とともに説明する。Next, a vibration method according to the present invention will be described together with an apparatus for generating vibration.
【0019】図1に振動装置を示す。振動装置2は、
X、Y、Zの軸方向に作動するピストンシリンダ機構
4、6、8と、これら各ピストンシリンダ機構4、6、
8により支持された振動板10を備え、それぞれのピス
トンシリンダ機構4、6、8を作動させることにより
X、Y、Zの各軸方向に振動板10を任意に作動させる
ことができる。なお、XY平面内の固定及びZ軸方向の
固定には継ぎ手12が設けてあり、この継ぎ手12のク
リアランスで、各方向に同時に移動させることが可能と
なっている。FIG. 1 shows a vibration device. The vibration device 2
The piston-cylinder mechanisms 4, 6, 8 operating in the X, Y, Z axial directions, and the piston-cylinder mechanisms 4, 6,
The diaphragm 10 supported by the actuator 8 is provided, and the diaphragm 10 can be arbitrarily operated in each of the X, Y, and Z axial directions by operating the respective piston cylinder mechanisms 4, 6, 8. A joint 12 is provided for fixing in the XY plane and fixing in the Z-axis direction, and the joint 12 can be simultaneously moved in each direction by the clearance of the joint 12.
【0020】振動装置2は、各ピストンシリンダ機構
4、6、8の油圧を制御装置で制御し、振動板10の振
動軌跡が所望の形状となるように作動させる。例えば、
Z軸を通る所定の方向の平面内に振動の軌跡が図2に示
すようなリサージュ図形を形成するように各軸の振動の
周波数や振幅等を設定する。The vibration device 2 controls the hydraulic pressure of each of the piston-cylinder mechanisms 4, 6, 8 with a control device, and operates the vibration plate 10 so that the vibration locus of the vibration plate 10 has a desired shape. For example,
The vibration frequency and amplitude of each axis are set so that the trajectory of the vibration forms a Lissajous figure as shown in FIG. 2 in a plane in a predetermined direction passing through the Z axis.
【0021】軌跡がこのようなリサージュ図形を形成す
る振動を鋳物砂に与えることにより、振動板10上に取
り付けられた鋳型枠(図示せず)内の鋳物砂は、XY成
分で合成された方向に移動し、かつ垂直方向にも振動す
る成分が付与されて密に凝集される。そして振動方向
を、Z軸回りに回転させることにより、任意な方向に鋳
物砂を移動させることができる。By giving the molding sand vibrations whose trajectories form such a Lissajous figure, the molding sand in a mold frame (not shown) mounted on the diaphragm 10 is oriented in the direction synthesized by the XY components. And a component which vibrates also in the vertical direction is applied and densely aggregated. By rotating the vibration direction around the Z axis, the molding sand can be moved in any direction.
【0022】具体的には、図形の中心軸の傾きΘを45
度とし、図形の長軸方向の長さに対して横幅を0.5と
すると、鋳物砂を非常に効率よく移動させることができ
る。このような振動をZ軸回りに任意な方向に回転させ
て、鋳物砂を十分水平方向に移動させた後、振動の軌跡
を円形、あるいはZ軸方向に直線状にする。すると、鋳
物砂は垂直方向に込められ、強く凝集させることができ
る。Specifically, the inclination Θ of the central axis of the figure is 45
When the width is 0.5 with respect to the length of the figure in the major axis direction, the molding sand can be moved very efficiently. After such vibration is rotated in an arbitrary direction about the Z-axis to move the molding sand sufficiently in the horizontal direction, the trajectory of the vibration is made circular or linear in the Z-axis direction. Then, the foundry sand is put in the vertical direction and can be strongly aggregated.
【0023】なお、上記例では鋳物砂を例に説明した
が、本発明は鋳物砂の凝集に限らず、他の粉体に対して
も用いることができる。In the above example, the molding sand has been described as an example. However, the present invention is not limited to agglomeration of the molding sand, but may be applied to other powders.
【0024】振動台の他の例を次に説明する。Next, another example of the shaking table will be described.
【0025】この振動台は、図3に示すように振動板1
0を6 本のリンク22で支持した装置であり、リンク2
2の作用により振動台10を任意の方向に移動、振動さ
せることができる。このように支持した振動台10に駆
動機構を接続させて、作動させるようにしてもよい。The vibrating table includes a diaphragm 1 as shown in FIG.
0 is supported by six links 22.
By virtue of the function 2, the vibration table 10 can be moved and vibrated in any direction. A drive mechanism may be connected to the vibrating table 10 supported in this way to operate it.
【0026】なお、軌跡の描くリサージュ図形は、図2
に示すような楕円形に限るものではない。The Lissajous figure drawn by the trajectory is shown in FIG.
However, the shape is not limited to an ellipse as shown in FIG.
【0027】[0027]
【実施例】図4に振動の軌跡を各リサージュ図形におけ
る鋳物砂の流動状態の実験結果を示す。図4に示すよう
に、リサージュ図形の軸方向の長さと横幅との比が0.
5以下の場合、鋳物砂の所定の方向への移動と縦方向に
凝集することが確認された。又、垂直方向と水平方向の
振動の位相差ψを連続的に変化させることにより、鋳物
砂が均一に、かつ十分凝集されることが確認できた。FIG. 4 shows the results of experiments on the flow of molding sand in each Lissajous figure for the trajectory of vibration. As shown in FIG. 4, the ratio between the axial length and the width of the Lissajous figure is 0.
In the case of 5 or less, it was confirmed that the molding sand moved in a predetermined direction and aggregated in the vertical direction. In addition, it was confirmed that the casting sand was uniformly and sufficiently aggregated by continuously changing the phase difference の between the vertical and horizontal vibrations.
【0028】[0028]
【発明の効果】本発明の振動方法によれば、鋳物砂に付
与する振動をXY軸成分にZ軸成分を加えた振動とする
ことができ、これにより、任意な方向に鋳物砂を移動さ
せるとともに、垂直方向に力を付与することができ、鋳
物砂を密に凝集させることができ、鋳型の表面に密着さ
せることができる。According to the vibration method of the present invention, the vibration applied to the molding sand can be the vibration obtained by adding the Z-axis component to the XY-axis components, thereby moving the molding sand in an arbitrary direction. At the same time, a force can be applied in the vertical direction, the molding sand can be densely agglomerated, and can be brought into close contact with the surface of the mold.
【図1】振動装置を示す図である。FIG. 1 is a diagram showing a vibration device.
【図2】リサージュ図形を示す図である。FIG. 2 is a diagram showing a Lissajous figure;
【図3】振動装置の他の例を示す図である。FIG. 3 is a diagram showing another example of the vibration device.
【図4】実験結果を示す表である。FIG. 4 is a table showing experimental results.
【図5】加速度の波形を示す図である。FIG. 5 is a diagram showing a waveform of an acceleration.
【図6】他の例の加速度の波形を示す図である。FIG. 6 is a diagram showing a waveform of an acceleration in another example.
2 振動装置 4、6、8 ピストンシリンダ機構 10 振動板 12 継ぎ手 22 リンク 2 Vibration device 4, 6, 8 Piston cylinder mechanism 10 Vibration plate 12 Joint 22 Link
───────────────────────────────────────────────────── フロントページの続き (72)発明者 青木 保夫 東京都小金井市緑町2−13−7 (72)発明者 重信 晃 神奈川県横浜市港北区太尾町65 (56)参考文献 特開 平3−161145(JP,A) 特開 平9−225586(JP,A) (58)調査した分野(Int.Cl.7,DB名) B22C 11/00 - 25/00 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yasuo Aoki 2-13-7 Midoricho, Koganei-shi, Tokyo (72) Inventor Akira Shigenobu 65, Taiocho, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture (56) References JP-A-3-3 161145 (JP, A) JP-A-9-225586 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B22C 11/00-25/00
Claims (3)
意な方向の水平方向往復動振動を合成し、かかる合成振
動を鋳造用の鋳物砂に付与して該鋳物砂を締結する鋳物
砂の振動方法において、 前記垂直方向及び前記水平方向のそれぞれの往復動振動
の振動成分を、 加速度の最大値が4m/s(2乗)〜30m/s(2
乗)で、かつ、前記加速度の波形を、矩形波、あるいは
波形の上昇側又は下降側のいずれか一方をほぼ垂直に立
てた鋸歯波とし更に、振動数が25〜100Hz、 片振幅が0.01mm〜前記鋳物砂の直径の1.5倍の
範囲内とし、 かつ、前記往復動振動を合成した合成振動の軌跡が描く
リサージュ図形の長軸の傾斜角が前記XY平面に対して
15度〜75度の範囲内で、かつ前記長軸方向の長さに
対する幅の値を0〜0.5としたことを特徴とした鋳物
砂の振動方法。1. A molding sand for synthesizing a vertical reciprocating vibration with a horizontal reciprocating vibration in an arbitrary direction in an XY plane and applying the synthesized vibration to a molding sand for casting to fasten the molding sand. In the vibration method, the vibration component of each of the reciprocating vibrations in the vertical direction and the horizontal direction is obtained by calculating the maximum value of acceleration from 4 m / s (square) to 30 m / s (2).
Squared) , and the waveform of the acceleration is a square wave or
Either the rising or falling side of the waveform stands almost vertically
Further, the sawtooth wave has a frequency of 25 to 100 Hz, a half amplitude of 0.01 mm to 1.5 times the diameter of the foundry sand, and a trajectory of a synthetic vibration obtained by synthesizing the reciprocating vibration. The inclination angle of the long axis of the Lissajous figure to be drawn is within a range of 15 degrees to 75 degrees with respect to the XY plane, and the width value with respect to the length in the long axis direction is 0 to 0.5. Method of vibrating foundry sand.
リサージュ図形の長さに対する幅の値をほぼ1とした振
動を付与することを特徴とした鋳物砂の振動方法。2. After applying the synthetic vibration according to claim 1,
A method for vibrating a foundry sand, wherein a vibration having a width value of about 1 with respect to the length of a Lissajous figure is applied.
した変動で変化させたことを特徴とした請求項1又は2
に記載の鋳物砂の振動方法。Wherein the reciprocating claims to characterized in that varied variations each value continuous vibration component of the vibration 1 or 2
The vibration method of the foundry sand according to the above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35276097A JP3182121B2 (en) | 1997-12-22 | 1997-12-22 | Vibration method of foundry sand |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35276097A JP3182121B2 (en) | 1997-12-22 | 1997-12-22 | Vibration method of foundry sand |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11179487A JPH11179487A (en) | 1999-07-06 |
JP3182121B2 true JP3182121B2 (en) | 2001-07-03 |
Family
ID=18426262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP35276097A Expired - Fee Related JP3182121B2 (en) | 1997-12-22 | 1997-12-22 | Vibration method of foundry sand |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3182121B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101806775B1 (en) | 2017-08-11 | 2017-12-07 | 배선봉 | Ejecting device for a molding machine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7735543B2 (en) | 2006-07-25 | 2010-06-15 | Metal Casting Technology, Inc. | Method of compacting support particulates |
EP1944104B1 (en) | 2007-01-10 | 2012-08-29 | Metal Casting Technology, Inc. | Method of Compacting Support Particulates |
-
1997
- 1997-12-22 JP JP35276097A patent/JP3182121B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101806775B1 (en) | 2017-08-11 | 2017-12-07 | 배선봉 | Ejecting device for a molding machine |
Also Published As
Publication number | Publication date |
---|---|
JPH11179487A (en) | 1999-07-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108025498B (en) | Method and apparatus for coating fluid | |
CN105750546B (en) | A kind of selective laser fusing two-dimensional ultrasound adds vibrating device | |
JP3182121B2 (en) | Vibration method of foundry sand | |
JP2005103923A (en) | Oscillation apparatus | |
JP6132642B2 (en) | Method for preparing semi-solid metal slurry | |
JP3148170B2 (en) | Mold vibrator and its driving method | |
CN105171909A (en) | Method And Apparatus For Casting Concrete Products | |
JP2997844B2 (en) | Casting sand filling method | |
JPH02268947A (en) | Apparatus for generating oscillation of mold in continuous casting machine | |
JP2680786B2 (en) | Foundry sand filling device in casting method of disappearing model | |
JPS62199245A (en) | Shaking table and its shaking method | |
JP2000288677A (en) | Metal forming method and metal forming device | |
JPH0325278B2 (en) | ||
JPH06239Y2 (en) | Material feeder for roll forming machine | |
JP2000271700A (en) | Manufacture of mold for full mold casting | |
JPH06297082A (en) | Device for filling molding sand | |
JPS63278810A (en) | Powder material filling method and its device | |
JP3186480U (en) | Compaction device for inorganic waste | |
JPH0292434A (en) | Feeder casting method | |
JPH0292437A (en) | Oscillating device of mold for continuous casting | |
JP3648625B2 (en) | Vibrating flow device for powder | |
JP3640389B2 (en) | Low noise molding method and equipment for concrete secondary products | |
JP2836216B2 (en) | Post-processing equipment for sand mold for casting | |
JPH05309444A (en) | Method for controlling molding sand packing equipment | |
RU2087251C1 (en) | Method of vibration treatment of crystallizing metal and device for its embodiment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20010403 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110420 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110420 Year of fee payment: 10 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
LAPS | Cancellation because of no payment of annual fees |