JP2627805B2 - Device for charging casting sand into casting flask - Google Patents

Device for charging casting sand into casting flask

Info

Publication number
JP2627805B2
JP2627805B2 JP17777289A JP17777289A JP2627805B2 JP 2627805 B2 JP2627805 B2 JP 2627805B2 JP 17777289 A JP17777289 A JP 17777289A JP 17777289 A JP17777289 A JP 17777289A JP 2627805 B2 JP2627805 B2 JP 2627805B2
Authority
JP
Japan
Prior art keywords
sand
molding
foundry
squeeze
weight
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
Application number
JP17777289A
Other languages
Japanese (ja)
Other versions
JPH0342142A (en
Inventor
猪三男 渥美
秀人 寺田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sintokogio Ltd
Original Assignee
Sintokogio Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sintokogio Ltd filed Critical Sintokogio Ltd
Priority to JP17777289A priority Critical patent/JP2627805B2/en
Publication of JPH0342142A publication Critical patent/JPH0342142A/en
Application granted granted Critical
Publication of JP2627805B2 publication Critical patent/JP2627805B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、鋳型造型設備において、鋳物砂の性状に対
応させて鋳物砂を摸型板上の鋳枠内に必要量投入するの
に好適な装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention is suitable for charging a required amount of molding sand into a molding frame on a model plate in accordance with the properties of molding sand in a mold making facility. Devices.

(従来の技術) 従来の鋳型造型設備においては、必要量の鋳物砂の鋳
枠内への投入は、一般に鋳物砂のコンパクタビリティ値
に関係なく、サンドホッパのゲートを一定時間開いて計
量ホッパに鋳物砂を供給した後、この計量ホッパ内の鋳
物砂を鋳枠内に投入する方法によって行っている。そし
て、その鋳物砂の供給量は必要量より若干多目になって
いる。一方、鋳物砂はコンパクタビリティ値の相違によ
ってスクイズされる量(高さ)が異なる。
(Prior art) In a conventional molding equipment, a required amount of molding sand is generally poured into a casting flask by opening a gate of a sand hopper for a certain period of time regardless of the compactability value of the molding sand, and then casting the molding sand into a weighing hopper. After the sand is supplied, the casting sand in the weighing hopper is put into a casting flask. And, the supply amount of the foundry sand is slightly larger than the required amount. On the other hand, the casting sand has a different squeezed amount (height) depending on the difference in compactability value.

(発明が解決しようとする課題) 上記のようにして供給された鋳枠内の鋳物砂がスクイ
ズされて造型された場合、鋳物砂のコンパクタビリティ
値の相違によって鋳枠上面から盛り上がる鋳物砂の量や
高さが大きく変わり、その結果、鋳枠上の鋳物砂をかき
取るサンドカッタのメンテナンスが非常に厄介になり、
しかも、鋳型の造型に使用されず排出されることになる
鋳物砂いわゆるスピルサンドの量が極めて多くなるなど
の問題があった。
(Problems to be Solved by the Invention) When the molding sand in the molding flask supplied as described above is squeezed and molded, the amount of molding sand rising from the upper surface of the molding flask due to a difference in the compactability value of the molding sand. The height of the sand cutter greatly changes, and as a result, the maintenance of the sand cutter that scrapes the foundry sand on the flask becomes very troublesome.
In addition, there is a problem in that the amount of foundry sand, that is, spill sand, which is not used in the molding of the mold and is discharged becomes extremely large.

本発明は上記の問題を解消するためになされたもので
ある。
The present invention has been made to solve the above problems.

(課題を解決するための手段) 上記目的を達成するために本発明の鋳物砂の鋳枠への
投入装置においては、摸型板上の鋳枠の直上方位置に入
出可能に配設された計量ホッパと、該計量ホッパ鋳物砂
を供給する鋳物砂供給手段と、前記計量ホッパに供給さ
れた鋳物砂の重量を測定するロードセルと、前記鋳枠内
に投入された鋳物砂を一定の力で下方へ押圧するスクイ
ズ板と、該スクイズ板による鋳物砂スクイズ量を測定す
る変位計と、前記ロードセル、鋳物砂供給手段および変
位計に電気的に接続されてコンパクタビリティ値が異な
る各種の鋳物砂についての前記鋳枠に投入された鋳物砂
の重量と当該鋳物砂のスクイズ量との相関関係および鋳
物砂のコンパクタビリティ値と当該コンパクタピリティ
値に対応した前記鋳枠に投入されるべき鋳物砂の重量と
の相関関係を記憶していて前記ロードセルからの鋳物砂
重量値信号および前記変位計からのスクイズ量信号に基
づいて必要鋳物砂重量を演算する演算手段と、を備えた
ものである。
(Means for Solving the Problems) In order to achieve the above-mentioned object, in the casting sand injection device of the present invention, the casting sand is disposed so as to be able to enter and exit immediately above the molding frame on the model plate. A weighing hopper, a molding sand supply means for supplying the weighing hopper molding sand, a load cell for measuring the weight of the molding sand supplied to the weighing hopper, and a molding sand fed into the casting flask with a constant force. A squeeze plate that is pressed downward, a displacement meter that measures the amount of foundry sand squeezed by the squeeze plate, and various types of molding sand that are electrically connected to the load cell, the foundry sand supply means and the displacement meter and have different compactability values. The correlation between the weight of the foundry sand and the squeeze amount of the foundry sand and the compactability value of the foundry sand and the casting to be poured into the foundry corresponding to the compactority value Computing means for storing a correlation with the weight of sand and calculating a required molding sand weight based on a molding sand weight value signal from the load cell and a squeeze amount signal from the displacement meter. .

(作 用) 上記のように構成された鋳物砂の鋳枠への投入装置に
おいては、まず鋳物砂供給手段により計量ホッパに鋳物
砂が供給され、供給された鋳物砂の重量はロードセルに
より測定されて演算手段に入力される。次いで、計量ホ
ッパ内の鋳物砂は、摸型板上の鋳枠に投入された後、ス
クイズ板により一定の力でスクイズ造型される。そし
て、この時の鋳物砂のスクイズ量は変位計により測定さ
れて演算手段に入力される。こうして、鋳枠に投入され
た鋳物砂の重量と、この鋳物砂のスクイズ量とが演算手
段に入力されると、演算手段では鋳物砂のコンパクタビ
リティ値が算出された後、このコンパクタビリティ値に
対応した必要鋳物砂重量が演算される。この演算結果と
計量手段による計量の下に鋳物砂供給手段が所要時間駆
動され、これに伴い計量ホッパには鋳物砂のコンパクタ
ビリティ値に対応した重量の鋳物砂が供給される。この
結果、鋳枠には予め設定した必要鋳物砂重量である目標
値に可及的に近づくようにして鋳物砂が供給されること
となる。
(Operation) In the apparatus for charging molding sand into a casting flask configured as described above, first, molding sand is supplied to a measuring hopper by a molding sand supply means, and the weight of the supplied molding sand is measured by a load cell. Is input to the calculating means. Next, the casting sand in the measuring hopper is put into a casting frame on the model plate, and then squeezed by a squeeze plate with a constant force. Then, the squeeze amount of the molding sand at this time is measured by the displacement meter and input to the calculating means. In this way, when the weight of the foundry sand and the squeeze amount of the foundry sand are input to the calculating means, the calculating means calculates the compactability value of the foundry sand, and then calculates the compactability value of the foundry sand. The corresponding required casting sand weight is calculated. The foundry sand supply means is driven for a required time under the result of the calculation and the measurement by the measuring means, and accordingly, a foundry sand having a weight corresponding to the compactability value of the foundry sand is supplied to the measuring hopper. As a result, the molding sand is supplied to the flask in such a manner as to be as close as possible to a target value which is a predetermined required molding sand weight.

(実施例) 実施例について図面を参照して説明すると、図示しな
い昇降テーブルの上面には摸型板(1)が取り付けら
れ、該摸型板(1)上には鋳枠(2)が載置されてい
る。該鋳枠(2)の上方には左右方向に延びるフレーム
(3)が固定配設され、該フレーム(3)の上面には左
右方向へ延びるレール(4)が敷設されている。そし
て、該レール(4)上には2台の第1・第2走行台車
(5)(6)が互いに連結杆(7)により連結されて走
行自在に載せられ、第1走行台車(5)上には、計量ホ
ッパ(8)が圧縮コイルばね(9)(9)を介して載置
されるとともに、計量ホッパ(8)内の鋳物砂の重量を
測定するロードセル(10)が装着されている。そして計
量ホッパ(8)の底部には開閉ゲート(11)が設けられ
ている。また、第2走行台車(6)には下向きのシリン
ダ(12)が装着され、該シリンダ(12)の下端にはスク
イズ板(13)が固着されている。また、該スクイズ板
(13)の上面には2本のガイドロッド(14)(14)が立
設され、一本のガイドロッド(14)の上端には、第2走
行台車(6)上に装着した鋳物砂スクイズ量測定用の変
位計(15)の指針(15a)が装着されている。また、前
記計量ホッパ(8)の上方には、計量ホッパ(8)に鋳
物砂を供給する鋳物砂供給手段としての切出しコンベヤ
(16)付サンドホッパ(17)が配設されている。
(Example) An example will be described with reference to the drawings. A model plate (1) is mounted on an upper surface of a lifting table (not shown), and a molding frame (2) is mounted on the model plate (1). Is placed. A frame (3) extending in the left-right direction is fixedly disposed above the flask (2), and a rail (4) extending in the left-right direction is laid on the upper surface of the frame (3). Then, on the rail (4), two first and second traveling vehicles (5) and (6) are connected to each other by a connecting rod (7) so as to run freely, and the first traveling vehicle (5) is mounted. On the top, a weighing hopper (8) is placed via compression coil springs (9) (9), and a load cell (10) for measuring the weight of the molding sand in the weighing hopper (8) is mounted. I have. An opening / closing gate (11) is provided at the bottom of the weighing hopper (8). Further, a downward cylinder (12) is mounted on the second traveling vehicle (6), and a squeeze plate (13) is fixed to a lower end of the cylinder (12). Also, two guide rods (14) (14) are erected on the upper surface of the squeeze plate (13), and the upper end of one guide rod (14) is placed on the second traveling vehicle (6). A pointer (15a) of the displacement meter (15) for measuring the amount of the foundry sand squeeze is mounted. Above the weighing hopper (8), a sand hopper (17) with a cutting-out conveyor (16) as a molding sand supply means for supplying molding sand to the weighing hopper (8) is provided.

また、前記ロードセル(10)、変位計(15)および切
出しコンベヤ(16)のモータは演算手段としてのマイク
ロコンピュータ(18)に適宜の増幅器(図示せず)を介
して電気的に接続されており、該マイクロコンピュータ
(18)は、第2図に示すように、予め実験で求めたとこ
ろの、コンパクタビリティ値の異なる各種の鋳物砂につ
いての前記鋳枠(2)に投入された鋳物砂の重量と当該
鋳物砂のスクイズ量との相関関係、および、第3図に示
すように、同じく実験で求めたところの鋳物砂のコンパ
クタビリティ値と当該コンパクタビリティ値に対応した
鋳枠(2)に投入すべき鋳物砂の重量との相関関係が記
憶されている。
Further, the motors of the load cell (10), the displacement meter (15) and the cut-out conveyor (16) are electrically connected to a microcomputer (18) as arithmetic means via a suitable amplifier (not shown). As shown in FIG. 2, the microcomputer (18) calculates the weight of the molding sand put into the molding flask (2) with respect to various molding sands having different compactability values, which were obtained in advance by experiments. And the squeeze amount of the foundry sand, and as shown in FIG. 3, the compactability value of the foundry sand and the casting mold (2) corresponding to the compactibility value were also obtained by experiments. The correlation with the weight of foundry sand to be stored is stored.

なお、図中(19)は図示しないシリンダを介して昇降
可能に設けた盛枠である。
In addition, (19) in the figure is a filling frame provided so as to be able to move up and down via a cylinder (not shown).

次にこのように構成された装置の作用について説明す
る。まず、切出しコンベヤ(16)を所要時間駆動してサ
ンドホッパ(17)内の鋳物砂を計量ホッパ(8)に供給
し、かつ計量ホッパ(8)に供給された鋳物砂の重量を
ロードセル(10)で測定し、その測定結果をマイクロコ
ンンピュータ(18)に入力する。次いで、第1走行台車
(5)を第2走台車(6)と共に右方へ走行して計量ホ
ッパ(8)を摸型板(1)上の鋳枠(2)の直上方位置
に移動させ、かつ図示しない昇降テーブルにより摸型板
(1)および鋳枠(2)を上昇して鋳枠(2)上面を盛
枠(19)を介在させてフレーム(3)の下面に当接さ
せ、続いてゲート(11)を開閉して計量ホッパ(8)の
ゲート(11)を開閉して鋳物砂を鋳枠(2)内に投入す
る。次いで、第1・第2走行台車(5)(6)を左方へ
走行して第1図に示す状態に復帰させ、続いて、シリン
ダ(12)を伸長作動してスクイズ板(13)を下降させ鋳
枠(2)内の鋳物砂(S)をスクイズし造型する。この
時、鋳物砂(S)のスクイズ量が基準寸法を中心にして
+、−と態様で変位計(15)により測定されて(第2図
参照)マイクロコンピュータ(18)に入される。こうし
て、マイクロコンピュータ(18)に鋳物砂(S)の重量
とスクイズ量とが入力されると、マイクロコンピュータ
(18)はその鋳物砂(S)のコンパクタビリティ値を算
出した後このコンパクタビリティ値に対応する必要鋳物
砂重量を演算して一時記憶する。鋳物砂(S)のスクイ
ズ完了後、シリンダ(12)の収縮作動によりスクイズ板
(13)を上昇させ、かつ昇降テーブル(図示せず)をも
って摸型板(1)および鋳枠(2)を下降させる。そし
て、鋳枠(2)は下降途中でつば付ローラコンベア(図
示せず)等で受けられて型抜きが行われる。
Next, the operation of the thus configured device will be described. First, the cutting conveyor (16) is driven for a required time to supply the molding sand in the sand hopper (17) to the measuring hopper (8), and the weight of the molding sand supplied to the measuring hopper (8) is loaded into the load cell (10). And the measurement result is input to the microcomputer (18). Next, the first traveling vehicle (5) travels to the right along with the second traveling vehicle (6) to move the weighing hopper (8) to a position immediately above the flask (2) on the model plate (1). The model plate (1) and the casting frame (2) are raised by a lifting table (not shown), and the upper surface of the casting frame (2) is brought into contact with the lower surface of the frame (3) with the filling frame (19) interposed therebetween. Subsequently, the gate (11) is opened and closed, and the gate (11) of the weighing hopper (8) is opened and closed, and molding sand is poured into the casting flask (2). Next, the first and second traveling carriages (5) and (6) travel leftward to return to the state shown in FIG. 1, and then the cylinder (12) is extended to move the squeeze plate (13). The mold sand (S) in the casting flask (2) is lowered and squeezed to form a mold. At this time, the squeeze amount of the foundry sand (S) is measured by a displacement gauge (15) in the + and-directions around the reference dimension (see FIG. 2) and is input to the microcomputer (18). When the weight of the foundry sand (S) and the squeeze amount are input to the microcomputer (18) in this way, the microcomputer (18) calculates the compactability value of the foundry sand (S), and then calculates the compactability value. The corresponding required foundry sand weight is calculated and temporarily stored. After the squeeze of the casting sand (S) is completed, the squeeze plate (13) is raised by the contraction operation of the cylinder (12), and the model plate (1) and the casting frame (2) are lowered by the lifting table (not shown). Let it. Then, the casting frame (2) is received by a roller conveyor (not shown) with a collar or the like during the descent, and the die is cut.

次いで、空の他の鋳枠(2)を摸型板(1)上に載置
する一方で、マイクロコンピュータ(18)からベルトコ
ンベヤ(16)の駆動信号を出力し、その重量をロードセ
ル(10)で測定しながら、演算された重量の鋳物砂を計
量ホッパ(8)に供給する。こうして鋳物砂を計量ホッ
パ(8)に供給することより、次回の鋳枠(2)内には
鋳物砂のコンパクタビリティ値に対応するとともに予め
設定したほぼ一定の重量の鋳物砂が投入されることとな
る。この結果、スクイズ造型された際に鋳枠(2)上か
ら盛り上がる鋳物砂の量および高さを一定におさえるこ
とができる。
Next, while placing another empty flask (2) on the model plate (1), a drive signal for the belt conveyor (16) is output from the microcomputer (18), and the weight is output to the load cell (10). The measured weight of the foundry sand is supplied to the weighing hopper (8) while measuring in step (1). By supplying the molding sand to the weighing hopper (8) in this way, the casting sand having the substantially constant weight set in advance and corresponding to the compactability value of the molding sand is set in the next casting frame (2). Becomes As a result, the amount and height of the molding sand that swells from above the casting flask (2) during squeeze molding can be kept constant.

(発明の効果) 以上の説明からも明らかなように本発明によれば、鋳
物砂のコンパクタビリティ値を鋳型のスクイズ造型と共
に測定し、その測定値に基づいて計量ホッパに鋳物砂を
投入できるため、鋳枠には鋳物砂のコンパクタビリティ
値に対応した鋳物砂の投入が可能になり、したがって、
スクイズ造型後に鋳枠上から盛り上がる鋳物砂の重量や
高さが、コンパクタビリティ値の変化に伴って大きく変
動することがなくなり、サンドカッタのメンテナンスが
従来の装置にくらべて非常に容易になる。併せてスピル
サンドの量を少なくすることができるなどの効果を奏す
る。
(Effects of the Invention) As is clear from the above description, according to the present invention, the compactability value of the molding sand is measured together with the squeeze molding of the mold, and the molding sand can be poured into the measuring hopper based on the measured value. , It is possible to put molding sand into the flask corresponding to the compactability value of the molding sand,
The weight and height of the molding sand rising from the flask after squeeze molding do not fluctuate greatly with a change in the compactability value, and the maintenance of the sand cutter becomes much easier than in the conventional apparatus. At the same time, the effect of reducing the amount of spill sand can be obtained.

【図面の簡単な説明】[Brief description of the drawings]

第1図は本発明の一実施例を示す一部断面正面図、第2
図はコンパクタビリティ値が異なる各種の鋳物砂につい
ての鋳枠に投入された鋳物砂の重量とこの鋳物砂をスク
イズ板でスクイズした時のスクイズ量(変位計における
変位値)との相関関係を示すグラフ、第3図はコンパク
タビリティ値が異なる各種の鋳物砂においてコンパクタ
ビリティ値に対応して鋳枠に投入されるべき鋳物砂の重
量の相関関係を示すグラフである。 (8):計量ホッパ (10):ロードセル (13):スクイズ板 (15):変位計 (16):ベルトコンベヤ (17):サンドホッパ (18):マイクロコンピュータ
FIG. 1 is a partially sectional front view showing an embodiment of the present invention, and FIG.
The figure shows the correlation between the weight of the foundry sand injected into the casting frame and the squeeze amount (displacement value in the displacement meter) when the foundry sand is squeezed with a squeeze plate for various foundry sands having different compactability values. FIG. 3 is a graph showing the correlation between the weights of the molding sand to be put into the casting mold corresponding to the compactability values in various molding sands having different compactability values. (8): Measuring hopper (10): Load cell (13): Squeeze plate (15): Displacement gauge (16): Belt conveyor (17): Sand hopper (18): Microcomputer

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】鋳型造型設備において摸型板上の鋳枠に所
要量の鋳物砂を投入する鋳物砂の鋳枠への投入装置であ
って、摸型板上の鋳枠の直上方位置に入出可能に配設さ
れた計量ホッパと、該計量ホッパに鋳物砂を供給する鋳
物砂供給手段と、前記計量ホッパに供給された鋳物砂の
重量を測定するロードセルと、前記鋳枠内に投入された
鋳物砂を一定の力で下方へ押圧するスクイズ板と、該ス
クイズ板による鋳物砂スクイズ量を測定する変位計と、
前記ロードセル、鋳物砂供給手段及び変位計に電気的に
接続されて、コンパクタビリティ値が異なる各種鋳物砂
についての前記鋳枠に投入された鋳物砂の重量と当該鋳
物砂のスクイズ量との相関関係、および鋳物砂のコンパ
クタビリティ値と当該コンパクタビリティ値に対応した
前記鋳枠に投入されるべき鋳物砂の重量との相関関係を
記憶していて前記ロードセルからの鋳物砂重量値信号お
よび前記変位計からのスクイズ量信号に基づいて必要鋳
物砂重量を演算する演算手段と、からなり、前記鋳物砂
供給手段は前記演算手段からの駆動信号に基づき前記ロ
ードセルによる測定の下に所要時間駆動されることを特
徴とする鋳物砂の鋳枠への投入装置。
An apparatus for feeding molding sand into a molding flask on a mold plate in a molding apparatus for molding a required amount of molding sand, the molding sand being placed directly above the molding flask on the model plate. A weighing hopper disposed so as to be able to enter and exit, molding sand supply means for supplying molding sand to the weighing hopper, a load cell for measuring the weight of the molding sand supplied to the weighing hopper, A squeeze plate that presses the foundry sand downward with a certain force, a displacement meter that measures the amount of foundry sand squeeze by the squeeze plate,
Correlation between the weight of the foundry sand and the squeeze amount of the foundry sand, which are electrically connected to the load cell, the foundry sand supply means and the displacement meter, and which have various compactability values and which have different compactability values. And a correlation between the compactability value of the foundry sand and the weight of the foundry sand to be charged into the foundry mold corresponding to the compactibility value, and stores the foundry sand weight value signal from the load cell and the displacement meter. Computing means for computing a required molding sand weight based on a squeeze amount signal from the apparatus, wherein the molding sand supply means is driven for a required time under measurement by the load cell based on a driving signal from the computing means. A device for charging molding sand into a casting flask.
JP17777289A 1989-07-10 1989-07-10 Device for charging casting sand into casting flask Expired - Fee Related JP2627805B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17777289A JP2627805B2 (en) 1989-07-10 1989-07-10 Device for charging casting sand into casting flask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17777289A JP2627805B2 (en) 1989-07-10 1989-07-10 Device for charging casting sand into casting flask

Publications (2)

Publication Number Publication Date
JPH0342142A JPH0342142A (en) 1991-02-22
JP2627805B2 true JP2627805B2 (en) 1997-07-09

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ID=16036852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17777289A Expired - Fee Related JP2627805B2 (en) 1989-07-10 1989-07-10 Device for charging casting sand into casting flask

Country Status (1)

Country Link
JP (1) JP2627805B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4334118C2 (en) * 1993-10-07 1997-01-30 Hottinger Adolf Masch Device for filling shot heads
CN110108557B (en) * 2019-04-23 2024-01-26 中铁八局集团第二工程有限公司 Device and method for determining relation between sand box height and sand consumption
JP7207285B2 (en) * 2019-12-19 2023-01-18 トヨタ自動車株式会社 Core molding machine
JP7188375B2 (en) * 2019-12-19 2022-12-13 トヨタ自動車株式会社 Core molding machine
CN113926987B (en) * 2021-10-18 2023-09-05 常州萨伟利铸造技术有限公司 Sand box sand filling system and method

Also Published As

Publication number Publication date
JPH0342142A (en) 1991-02-22

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