JPS601562A - Automatic sand tester - Google Patents
Automatic sand testerInfo
- Publication number
- JPS601562A JPS601562A JP10982083A JP10982083A JPS601562A JP S601562 A JPS601562 A JP S601562A JP 10982083 A JP10982083 A JP 10982083A JP 10982083 A JP10982083 A JP 10982083A JP S601562 A JPS601562 A JP S601562A
- Authority
- JP
- Japan
- Prior art keywords
- sand
- electrode plate
- test tube
- molding sand
- measured
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は・粉粒体、主として鋳物砂のコンノ(フタビリ
ティ値(突き固め性)、水分、通気性および強度を自動
的に計測する自動砂試験装置に関する。従来、この種の
試験装置は、試験室において、一定量採取して人為的に
計測する方法のため、ラインに組込み自動的に計測でき
ないのが大部分である。また、自動的に計測できる装置
としては、特公昭49−27310号公報に見られるよ
うに、混練後、循環搬送ラインから一定量の砂をコンベ
ヤを介して採取し自動的に計測する装置がある。しかし
、これは混線装置から循環搬送ラインに搬出された砂を
試験装置にコンベヤを介して一定量採取してJ1測して
いるため、その砂性状の削測結果が、一定条件を満たし
ていない場合には、混線装置から循環搬送ラインに既に
搬出された砂は、そのまま造型装置に送られ、造型され
ることになり、この砂によって造型された鋳型は、造型
不良などの□
原因となるものであった。また、この採取砂は混線装置
から循環搬送ライン及びコンベヤを介して砂試験装置に
送られる途中において、水分等の蒸発により砂性状が変
オつり計測結果に誤差が生じるなどの問題があった。ま
た、この自動砂試験装置は構造が複雑なため、保守点検
が困難であるとともに、使いにくくほとんど使用されて
いないのが現状である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic sand testing device for automatically measuring the compaction value (tamping ability), moisture content, air permeability, and strength of powder and granular materials, mainly foundry sand. This type of testing equipment is a method in which a fixed amount is sampled and measured manually in a testing laboratory, so in most cases it is not possible to incorporate it into a line and take measurements automatically. , as seen in Japanese Patent Publication No. 49-27310, there is a device that collects a certain amount of sand from a circulating conveyance line via a conveyor after kneading and automatically measures it. A certain amount of sand carried out to the line is collected via a conveyor to a testing device for J1 measurement, so if the sand quality measurement result does not meet certain conditions, it will be circulated and transferred from the cross-track device. The sand that has already been carried out to the line is sent as is to the molding equipment and molded, and the molds molded with this sand are the cause of molding defects. There were problems such as the sand properties changing due to evaporation of water etc. during the process of being sent from the crosstalk device to the sand testing device via the circulating conveyance line and conveyor, causing an error in the sanding measurement results. Test equipment has a complicated structure, which makes maintenance and inspection difficult, and it is difficult to use, so it is currently hardly used.
本発明はこれらの問題点に鑑みて成されたものであって
、混練装置から直接採取した砂を自動計測することによ
って、鋳物砂のコンパクタビリテイ−値(突き固め性)
、水分、通気性、および強度を自動的に正確に計測でき
るとともに、コンパクトで・かつ使用し易い自動砂試験
装置を提供することを目的とするもので゛ある。The present invention has been made in view of these problems, and by automatically measuring the sand taken directly from the kneading device, the compactability value (tamping property) of foundry sand can be determined.
The object of the present invention is to provide an automatic sand testing device that can automatically and accurately measure moisture, air permeability, and strength, and is compact and easy to use.
以下に、本発明の構成を実施例に基づき説明する。(1
)は混練装置で、混線装置(1)の側壁面には、砂採取
口(2)が穿設され、この砂採取口(2)には、案内筒
(3)が開口部を一致させて取りイ]けであるとともに
、案内筒(3)には、砂サンプリング用のスクリュ−フ
ィーダ(4)が案内筒(3)内周壁面との間に若干の間
隙を保って貫通してあって、先端は混線装置(1)内部
まで延びている。該スクリューフィーダ(4)は固定支
持板(5)に取りイ」けられtコ駆動モータ(6)軸に
回転継手(7)を介して連結され、駆動モータ(6)の
回転作動により一定量の砂がスクリューフィーダ(4)
によって混線装置(1)から外部に取り出せるようにな
っている。The configuration of the present invention will be explained below based on examples. (1
) is a kneading device, and a sand sampling port (2) is bored in the side wall of the mixing device (1), and a guide tube (3) is installed in this sand sampling port (2) so that the opening is aligned with the sand sampling port (2). In addition, a screw feeder (4) for sand sampling passes through the guide tube (3) with a slight gap maintained between it and the inner peripheral wall surface of the guide tube (3). , the tip extends into the crosstalk device (1). The screw feeder (4) is mounted on a fixed support plate (5) and connected to the shaft of a drive motor (6) via a rotary joint (7), and is fed a fixed amount by the rotation of the drive motor (6). The sand in the screw feeder (4)
can be taken out from the crosstalk device (1).
(8)は左・右に貫通し一側壁面が開口した断面口字状
の筒体で、この筒体(8)の上壁面には、砂供給口(8
a)に連通して砂受はシュート(9)が設けてあり、ま
た、筒体(8)の底壁面には、的部材(10)が固着し
であるとともに、砂供給口(8a)と同一線上位置にお
ける前記筒体(8)の底壁面及び一部材(lO)には、
貫通孔(11)が穿設してあって、該貫通孔(11)に
は、一部材(10)下面にフランジ部(12a )を介
して取りイ]けられた砂試験筒(12)が嵌合しである
。(13)は固定板(14)に取り付けられた水平シリ
ンダで、固定板(14)を遊貫して固定板(14)前方
に突出したピストンロッド(13a)先端には、断面口
形状のスクレーパ部材(15)が固着連結してあって、
該スクレーパ部材(15)の先端側における垂直板部材
(15a )の下面には、水平板部材(16)が後側に
突設しであるとともに、該水平板部材(16)の下ir
+i lこけ、絶縁部材(17)を介して平板状の上部
電極板(18)が固着してあり、該上部電極板(18)
は導線(19)を介して水分検出器(20)に結線しで
ある。(8) is a cylindrical body that penetrates left and right and has an opening on one side wall, and has a sand supply port (8) on the top wall of this cylindrical body (8).
The sand receptacle is provided with a chute (9) that communicates with a), and a target member (10) is fixed to the bottom wall surface of the cylindrical body (8), and a sand supply port (8a) is connected to the sand receptacle. On the bottom wall surface of the cylindrical body (8) and one member (lO) at the same line position,
A through hole (11) is drilled into the through hole (11), and a sand test tube (12) is inserted into the lower surface of the member (10) via a flange (12a). It is fitted. (13) is a horizontal cylinder attached to the fixed plate (14), and a piston rod (13a) that loosely passes through the fixed plate (14) and protrudes forward of the fixed plate (14) has a scraper at the tip. The members (15) are fixedly connected;
A horizontal plate member (16) is provided on the lower surface of the vertical plate member (15a) on the tip side of the scraper member (15) to protrude rearwardly, and a lower IR
A flat upper electrode plate (18) is fixed to the moss through an insulating member (17), and the upper electrode plate (18)
is connected to the moisture detector (20) via a conductor (19).
(21)は強度検出装置で、該強度検出装置(21)は
、前記スクレーパ部材(15)の土壁下面に取り伺けら
れた加圧シリンダ(22)と、そのピストンロッド(2
2a)先端に固着連結された保持−(23)と、保持=
(23)内に保持されて一定の圧力を検出するための
加圧検出器(ロードセル)(24)と、この加圧検出器
(24)下面と前記保持m (23)の底壁内面との間
で挾持されて先端を保持箱(23)の下方に摺動自在に
突出した検出棒(25)と、前記加圧検出器(24)に
導線(26) 4介して連結されて圧力値を電圧値に変
換するための加圧変換器(27)と、から成っていて、
押し固められた鋳物砂の強度が検出され電気信号に変換
されて、71測できるようになっている。(28)は上
端面に図示されない通気孔を有する下部電極板(29)
を備えた円筒部材で、前記砂試験筒(12)に摺動自在
に嵌挿されている。前記砂試験筒(12)のフランジ部
(12a)下面には、0リング(30)を介してシリン
ダ(31)のフランジ部(31a)が取り伺けられ該シ
リンダ(31)内には、先端が円錐状のピストン部材(
32)がOリング(33)を介して摺動自在に嵌挿され
ている。該ピストン部材(32)は固定支持板(34)
に1−向きに取り付けられた垂直シリンダ(35)のピ
ストンロッド(35a)と一体状に構成されているとと
もに、ピストン部材(32)の段部下面に突設された水
平部材(36)の先端には、水平部材(36)と直交状
にラックギヤー(37)が設けてあり、う・ソクギヤー
(37)には、ピニオン(38)が噛み合わされ、この
ピニオン(38)の回転数は回転電気信号変換器(39
)に伝達されるようになっていて、鋳物砂のコンパクタ
ビリテイ値が検出され電気信号に変換されて計測できる
ようになっている。(21) is a strength detecting device, and the strength detecting device (21) includes a pressurizing cylinder (22) protruded into the lower surface of the earthen wall of the scraper member (15), and its piston rod (2).
2a) A retainer fixedly connected to the tip - (23) and a retainer =
(23) A pressure detector (load cell) (24) held in the interior of the holder (24) for detecting a constant pressure, and a connection between the lower surface of the pressure detector (24) and the inner surface of the bottom wall of the holding m (23). A detection rod (25) is sandwiched between the detection rods (25) and its tip protrudes slidably below the holding box (23), and is connected to the pressure detector (24) via a conductive wire (26) 4 to detect pressure values. It consists of a pressure converter (27) for converting into a voltage value,
The strength of the compacted foundry sand is detected and converted into an electrical signal, making it possible to measure 71 times. (28) is a lower electrode plate (29) having a ventilation hole (not shown) on the upper end surface.
It is a cylindrical member equipped with a cylindrical member, which is slidably inserted into the sand test tube (12). The flange part (31a) of the cylinder (31) can be accessed through the O-ring (30) on the lower surface of the flange part (12a) of the sand test tube (12). is a conical piston member (
32) is slidably inserted through an O-ring (33). The piston member (32) is a fixed support plate (34)
The tip of the horizontal member (36) is integrally formed with the piston rod (35a) of the vertical cylinder (35) attached in the 1-direction, and protrudes from the lower surface of the step of the piston member (32). A rack gear (37) is provided perpendicularly to the horizontal member (36), and a pinion (38) is meshed with the rack gear (37), and the rotation speed of this pinion (38) is controlled by a rotating electric motor. Signal converter (39
), the compactability value of the foundry sand is detected and converted into an electrical signal that can be measured.
また、前記下部電極板(29)は、円筒部材(28)、
砂試験筒(12)、シリンダ(31) 、およびピスト
ン部材(32)を介して水平部材(36)に伝達できる
ようになっているとともに、該水平部材(36)は導!
(40)を介して前記水分検出器(20)に結線して
あって、上部電極板(18)と下部電極板(29)の間
に電圧を印加して両電極板(18)、(29)における
鋳物砂の水分を検出、計測できるようになっている。The lower electrode plate (29) also includes a cylindrical member (28),
The sand test tube (12), the cylinder (31), and the piston member (32) can be used to transmit the signal to the horizontal member (36), and the horizontal member (36) is connected to the horizontal member (36).
(40) is connected to the moisture detector (20), and a voltage is applied between the upper electrode plate (18) and the lower electrode plate (29). ) can detect and measure the moisture content of foundry sand.
また、シリンダ(31)のフランジ部(31a)には、
シリンダ(31)内部に通じる空気供給孔(41)が穿
ってあって、該空気供給孔(41)には、導管(42)
を介して空気供給源(43)が連通接続しであるととも
に、導管(42)の途中には、流量制御弁(44)と電
磁弁(44a)が挿入しである。そして、空気供給孔(
41)の途中には、圧力検出器(45)が先端を空気供
給孔(41)に臨ませて設けであるとともに、圧力検出
器(45)は導線(46)を介して圧力変換器(47)
に結線してあって、砂試験筒(12)内において押し固
められた鋳物砂の通気度を検出、泪測できるようになっ
ている。(48)はスクレーパ部材(15)の垂直板部
材(15a)を貫通して砂供給路に先端を突出した熱電
対て、砂温度を検出、制御できるように設けらicでい
る。In addition, the flange portion (31a) of the cylinder (31) has
An air supply hole (41) communicating with the inside of the cylinder (31) is bored, and a conduit (42) is connected to the air supply hole (41).
An air supply source (43) is connected through the conduit (42), and a flow control valve (44) and a solenoid valve (44a) are inserted in the middle of the conduit (42). And the air supply hole (
A pressure sensor (45) is provided in the middle of the air supply hole (41) with its tip facing the air supply hole (41), and the pressure sensor (45) is connected to the pressure transducer (47) via a conductor (46). )
The air permeability of the molding sand compacted in the sand test tube (12) can be detected and measured. (48) is an IC which penetrates the vertical plate member (15a) of the scraper member (15) and whose tip protrudes into the sand supply path, so as to be able to detect and control the sand temperature.
次に、このように構成されたものの作動につ0て説明す
る。駆動モータ(6)の作動により、回転継手(7)を
介してスクリューフィーダ(4)が回転すると、混線装
置(1)内におけるサンプリング用の鋳物砂がスクリュ
ーフィーダ(4)によって取り出され砂受はシュート(
9)を介して砂試験筒、(12)内に山盛状に投入され
るとともに、水平シリンダ(13)の伸長作動により、
スクレーパ部材(15)と共に」二部電極板(18)を
、その中心位置が砂試験筒(12)の中心軸線上位置と
一致するまで前進移動して一旦停止させ、砂試験筒(1
2)上面の砂を砂試験筒(12)の上端面と同一面にな
るようにかき均す。Next, the operation of the device configured as described above will be explained. When the screw feeder (4) is rotated via the rotary joint (7) by the operation of the drive motor (6), the molding sand for sampling in the crosstalk device (1) is taken out by the screw feeder (4) and the sand receiver is shoot(
9) into the sand test tube (12) in a heaping manner, and by the extension operation of the horizontal cylinder (13),
The two-part electrode plate (18) is moved forward together with the scraper member (15) until its center position coincides with the position on the center axis of the sand test tube (12), and then stopped once.
2) Smooth the sand on the top surface so that it is flush with the top end surface of the sand test tube (12).
次いで、一定圧に制御された圧縮空気を垂直シリンダ(
35)のヘッド側に供給すると、垂直シリンダ(35)
の伸長作動により、ピストン部材(32)が上昇してそ
の円錐状の先端で、円筒部材(28)、および下部電極
板(29)を押し上げて砂試験筒(12)内の鋳物砂を
上部電極板(18)との間で押し固めて試験片をつ(る
。そして、ピストン部材(32)の上昇ストロークハ、
ラックギヤー(37)を介してピニオンギヤ−(38)
に伝動されるとともに、このピニオンギヤ−(38)の
回転数は、回転電気信号変換器(39)に送信されて前
記試験片のコンパクタビリテイ値(突き固め性)が検出
、計測される。Next, compressed air controlled to a constant pressure is pumped into a vertical cylinder (
When supplied to the head side of the vertical cylinder (35)
When the piston member (32) is extended, the piston member (32) rises and its conical tip pushes up the cylindrical member (28) and the lower electrode plate (29) to transfer the foundry sand in the sand test tube (12) to the upper electrode. The test piece is compacted between the plate (18) and the upward stroke of the piston member (32).
Pinion gear (38) via rack gear (37)
At the same time, the rotation speed of the pinion gear (38) is transmitted to a rotary electric signal converter (39) to detect and measure the compactability value (tamping property) of the test piece.
なお、ピストン部材(32)の上昇ストロークが大キク
ヒニオンギャ−(38)の回転数が高いほどコンパクタ
ビリテイ値が高いことを示し、逆にピストン部材(32
)の上昇ストロークが小さくピニオンギヤ−(38)の
回転数が低いほどコンパクタビリテイ値が低いことを示
す。また、同時に、1対の上部および下部電極板(18
)、(29)間において交流15Vの電圧を印加して水
分検出器(2o)により、砂試験筒(12)内における
前記試験片の電気抵抗を検出し・以って水分を計測する
。It should be noted that the larger the upward stroke of the piston member (32) is, the higher the rotational speed of the gear (38) is, the higher the compactability value is.
) The smaller the upward stroke of the pinion gear (38) and the lower the rotation speed of the pinion gear (38), the lower the compactability value. At the same time, a pair of upper and lower electrode plates (18
) and (29), a moisture detector (2o) detects the electrical resistance of the test piece in the sand test tube (12), thereby measuring the moisture content.
すなわち、電気抵抗が大きければ大きいほど水分が少な
く、小さければ小さいほど水分が多いことを示している
。次いで、再び水平シリンダ(13)の伸長作動により
、スクレーパ部材(15)ト共ニ強度検出装置(21)
を・その中心軸線上位fffが砂試験筒(12)の中心
軸線上位置と一致するまで前進移動させて停止させたあ
と、電磁弁(44a)を開き、流量制御弁(44)を介
して一定流量に制御された一定圧の圧縮空気を空気供給
源(43)より空気供給孔(41)を介してシリンダ(
31)内に供給すると、圧縮空気は下部電極板(29)
に設けられた図示されない通気孔を経て砂試験筒(12
)内に流入して前記試験片を通気して上方に排出される
。そして、該圧縮空気は空気供給孔(41)を通る際、
圧力検出器(45)により圧力検知されて圧力変換器(
47)によって電気信号として前記試験片の通気度が計
測される。That is, the larger the electrical resistance, the less water there is, and the smaller the electrical resistance, the more water there is. Next, by the extension operation of the horizontal cylinder (13) again, both the scraper member (15) and the strength detection device (21)
・Move forward until the upper fff of the center axis matches the position on the center axis of the sand test tube (12) and stop, then open the solenoid valve (44a) and control the flow rate at a constant level via the flow control valve (44). Compressed air at a constant pressure with a controlled flow rate is supplied from an air supply source (43) to a cylinder (
31), compressed air is supplied to the lower electrode plate (29).
A sand test tube (12
), the specimen is ventilated and discharged upward. When the compressed air passes through the air supply hole (41),
The pressure is detected by the pressure detector (45) and the pressure transducer (
47), the air permeability of the test piece is measured as an electrical signal.
また、同時に、圧力シリンダ(22)の伸長作動により
、検出棒(25)が加圧検出器(24)を介して降下し
て前記試験片に突きささると、その検出棒(25)の加
圧反力が加圧検出器(24)により検出゛され、加圧変
換器(27)によって前記試験片の強度が電気信号によ
り変換されて計djjlされる。その後、水平シリンダ
(13)、および加圧シリンダ(22)の縮引作動によ
り、スクレーパ部材(15) 、検出棒(25)をそれ
ぞれ原位置まで復帰させたあと、垂直シリンダ(35)
の伸長作動により、前記試験片を砂試験筒(12)の上
方に押出すとともに、水平シリンダ(13)の伸長平シ
リンダ(13)の縮引作動により再びスクレーパ部材(
15)を原位置まで復帰させて次の操作に備える。At the same time, when the pressure cylinder (22) is extended, the detection rod (25) descends through the pressure detector (24) and pierces the test piece. The pressure reaction force is detected by a pressure detector (24), and the strength of the test piece is converted by an electric signal and measured by a pressure converter (27). After that, the horizontal cylinder (13) and the pressure cylinder (22) are retracted to return the scraper member (15) and the detection rod (25) to their original positions, and then the vertical cylinder (35)
The extension operation of the horizontal cylinder (13) pushes the test piece above the sand test tube (12), and the retraction operation of the extension flat cylinder (13) of the horizontal cylinder (13) pushes the scraper member (
15) Return to the original position and prepare for the next operation.
以上の説明によって明らかなように、本発明によれば、
混線装置から直接に鋳物砂を採取して簡単な構造の自動
砂試験装置で連続的に検出、計測するようにしたので、
常に最良の条件の砂によって造型され、その結果、良好
な鋳型が能率的に生産されるとともに、構造が簡単なた
め、保守点検が容易であるなどの効果を有し、この種の
業界に寄与する効果は著大である。As is clear from the above description, according to the present invention,
Since the foundry sand was collected directly from the crosstalk device and continuously detected and measured using a simple automatic sand testing device,
The molds are always molded using sand under the best conditions, resulting in efficient production of good molds, and the simple structure makes maintenance and inspection easy, contributing to this type of industry. The effect of doing so is significant.
第1図は本発明の実施例を示す正断面図、第2図は第1
図の側断面図、第3図は第1図における強度検出装置部
の拡大断面図である。
(1):混練装置 (12) :砂試験筒(15) :
スクレーパ部材 (18) : 41部電極板(20)
:水分検出器 (21) :強度検出装置(29)
:下部電極板 (32) :ピストン部材(39) :
回転電気信号変換器(41) :空気(J、t、給孔(
45) :圧力検出器 (47) :圧力変換器外30
警1置FIG. 1 is a front sectional view showing an embodiment of the present invention, and FIG.
3 is an enlarged sectional view of the intensity detecting device section in FIG. 1. FIG. (1): Kneading device (12): Sand test tube (15):
Scraper member (18): 41 part electrode plate (20)
: Moisture detector (21) : Strength detector (29)
: Lower electrode plate (32) : Piston member (39) :
Rotary electric signal converter (41): Air (J, t, feed hole (
45) : Pressure detector (47) : Outside pressure transducer 30 Alarm 1
Claims (1)
配置されて前記砂採取口から直接取り出した一定量のサ
ンプリング用の鋳物砂を装入するための砂試験筒と;該
砂試験筒の上方を該砂試験筒」一端面に対して水平状に
移動可能に設けられたスクレーパ部材と;該スクレーパ
部材の下端前部に取り付けられて下端面が前記砂試験筒
の上端面に整合するように設けられた上部電極板と;該
上部電極板と並列状に設けられて前記スクレーパ部材の
後部に取り付けられ押し固められた鋳物砂の強度を測定
するための装置と一前記砂試験筒内に摺動自在に嵌挿さ
れた通気性を有する下部電極板と;該下部電極板を押し
上げて前記砂試験筒内における鋳物砂と前記上部電極板
との間で挟圧して該鋳物砂を押し固めるためのピ不トン
部材と;該ピストン部材の上昇ストロークを検出して前
記押し固められた鋳物砂のコンパクタビリテイ値を計測
するための装置と;前記下部電極板の通気孔より一定流
量に制御された一定圧の圧縮空気を前記砂ム験筒内に供
給して前記押し固められた鋳物砂中を貫流させて前記上
部電極板の通気孔より排気し、以って該鋳物砂の通気度
を検出、計測するための装置と;前記両電極板の間に電
圧を印加して前記押し固められた鋳物砂の水分を検出、
計測するための装置と;を具備して成る自動砂試験装置
。a sand test tube disposed at regular intervals below the sand sampling port of the kneading device for charging a certain amount of molding sand for sampling directly taken out from the sand sampling port; A scraper member is provided above so as to be movable horizontally with respect to one end surface of the sand test tube; and the scraper member is attached to the front lower end of the scraper member so that the lower end surface is aligned with the upper end surface of the sand test tube. an upper electrode plate provided in the sand test tube; a lower electrode plate with air permeability that is slidably inserted; the lower electrode plate is pushed up and pressed between the molding sand in the sand test tube and the upper electrode plate to compact the molding sand; a device for detecting the upward stroke of the piston member and measuring the compactability value of the compacted foundry sand; controlling the flow rate to be constant through the ventilation hole of the lower electrode plate; The compressed air at a constant pressure is supplied into the sand chamber test tube, flows through the compacted molding sand, and is exhausted from the ventilation hole of the upper electrode plate, thereby increasing the air permeability of the molding sand. a device for detecting and measuring; applying a voltage between the electrode plates to detect moisture in the compacted foundry sand;
An automatic sand testing device comprising: a measuring device; and;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10982083A JPS601562A (en) | 1983-06-17 | 1983-06-17 | Automatic sand tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10982083A JPS601562A (en) | 1983-06-17 | 1983-06-17 | Automatic sand tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS601562A true JPS601562A (en) | 1985-01-07 |
| JPH0115825B2 JPH0115825B2 (en) | 1989-03-20 |
Family
ID=14520031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10982083A Granted JPS601562A (en) | 1983-06-17 | 1983-06-17 | Automatic sand tester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS601562A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04244961A (en) * | 1991-01-31 | 1992-09-01 | Sintokogio Ltd | Molding sand tester |
| EP0740144A3 (en) * | 1995-04-28 | 1997-08-13 | Sintokogio Ltd | Apparatus for measuring air permeability of molding sand |
| EP1749598A4 (en) * | 2004-03-23 | 2007-09-19 | Sintokogio Ltd | CASTING MOLD FORMING APPARATUS AND METAL MOLD UNIT FOR USE THEREIN |
| CN100534665C (en) | 2004-07-07 | 2009-09-02 | 新东工业株式会社 | Electrode mechanism for measuring mosture value of foundry sand, device for measuring moisture value of foundry sand, and method and device for filling water into foundry sand mixer |
| CN103418742A (en) * | 2012-05-16 | 2013-12-04 | 新东工业株式会社 | Sand extracting method in mixed moulding sand measuring device and device thereof |
| CN111983967A (en) * | 2020-08-17 | 2020-11-24 | 于彦奇 | Intelligent system and control method for controlling quality of molding sand in foundry |
| JP2022041855A (en) * | 2020-09-01 | 2022-03-11 | 新東工業株式会社 | Estimating device, specifying device, estimating method, and specifying method |
-
1983
- 1983-06-17 JP JP10982083A patent/JPS601562A/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04244961A (en) * | 1991-01-31 | 1992-09-01 | Sintokogio Ltd | Molding sand tester |
| EP0740144A3 (en) * | 1995-04-28 | 1997-08-13 | Sintokogio Ltd | Apparatus for measuring air permeability of molding sand |
| EP1749598A4 (en) * | 2004-03-23 | 2007-09-19 | Sintokogio Ltd | CASTING MOLD FORMING APPARATUS AND METAL MOLD UNIT FOR USE THEREIN |
| CN100534665C (en) | 2004-07-07 | 2009-09-02 | 新东工业株式会社 | Electrode mechanism for measuring mosture value of foundry sand, device for measuring moisture value of foundry sand, and method and device for filling water into foundry sand mixer |
| CN103418742A (en) * | 2012-05-16 | 2013-12-04 | 新东工业株式会社 | Sand extracting method in mixed moulding sand measuring device and device thereof |
| CN103418742B (en) * | 2012-05-16 | 2016-06-15 | 新东工业株式会社 | The sand extracting method being blended in molding sand proterties measuring device and device thereof |
| CN111983967A (en) * | 2020-08-17 | 2020-11-24 | 于彦奇 | Intelligent system and control method for controlling quality of molding sand in foundry |
| JP2022041855A (en) * | 2020-09-01 | 2022-03-11 | 新東工業株式会社 | Estimating device, specifying device, estimating method, and specifying method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0115825B2 (en) | 1989-03-20 |
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