JPH0140611Y2 - - Google Patents
Info
- Publication number
- JPH0140611Y2 JPH0140611Y2 JP1983103206U JP10320683U JPH0140611Y2 JP H0140611 Y2 JPH0140611 Y2 JP H0140611Y2 JP 1983103206 U JP1983103206 U JP 1983103206U JP 10320683 U JP10320683 U JP 10320683U JP H0140611 Y2 JPH0140611 Y2 JP H0140611Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- valve
- mold
- hardening
- electromagnetic
- 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
Links
- 238000000034 method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 239000004576 sand Substances 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 3
- 230000001877 deodorizing effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Description
【考案の詳細な説明】
本考案はガス硬化鋳型造型装置のガス吸入配管
に係り、詳しくは硬化ガス発生装置から発生する
SO2ガス等の有害な硬化ガスを、ガス硬化性粘結
剤含有の鋳物砂に貫流させて鋳物砂を硬化させ、
これによつて鋳型を造型する鋳型造型装置のガス
吸入配管に関する。[Detailed description of the invention] This invention relates to gas suction piping for a gas-curing mold making device, and more specifically, the gas suction piping that is generated from the curing gas generator.
A harmful hardening gas such as SO 2 gas is made to flow through the foundry sand containing a gas hardening binder to harden the foundry sand,
The present invention relates to gas suction piping for a mold making apparatus that manufactures molds using the gas suction piping.
SO2ガスを硬化ガスとするSO2ガス鋳型造型法
においてはSO2ガスが人体にとつて有害でありか
つ悪臭を発するため、SO2ガスが鋳型造型装置の
外に漏出しないようにする必要があり、この点を
対処した鋳型造型装置の開発が強く要望されてい
る。 In the SO 2 gas mold making method, which uses SO 2 gas as the curing gas, SO 2 gas is harmful to the human body and emits a bad odor, so it is necessary to prevent SO 2 gas from leaking out of the mold making equipment. Therefore, there is a strong demand for the development of a mold making device that addresses this problem.
本考案は上記の事情に鑑みなされたもので、
SO2ガス等の有害な硬化ガスが装置の外に漏出す
ることのないガス硬化鋳型造型装置のガス吸入配
管を提供することを目的とする。 This idea was created in view of the above circumstances.
The purpose of the present invention is to provide gas suction piping for a gas curing mold making device that prevents harmful curing gas such as SO 2 gas from leaking out of the device.
以下、本考案の一実施例について図面に基づき
詳細に説明する。１は鋳型キヤビテイ２を備えた
垂直割鋳型箱で、該鋳型箱１内には中空室３ａ，
３ｂが設けられており、該鋳型キヤビテイ２の表
面はベントホール４，４を介して中空室３ａ，３
ｂに連通されている。５は鋳型キヤビテイ２の上
面開口部を含む鋳型箱１上面を気密に被て鋳型キ
ヤビテイ２に硬化ガスを導入させる逆置箱状のカ
バー部材であり、該カバー部材５内は、配管６を
介して貯溜タンク１１に連通されており、該配管
６には、カバー部材５側から真空スイツチ７、電
磁開閉弁８、および電磁開閉弁１０が順次配設さ
れている。 Hereinafter, one embodiment of the present invention will be described in detail based on the drawings. 1 is a vertically split mold box equipped with a mold cavity 2, and inside the mold box 1 are hollow chambers 3a,
3b, and the surface of the mold cavity 2 is connected to hollow chambers 3a, 3 through vent holes 4, 4.
It is connected to b. Reference numeral 5 designates an inverted box-shaped cover member that airtightly covers the upper surface of the mold box 1 including the upper surface opening of the mold cavity 2 and introduces curing gas into the mold cavity 2; The piping 6 is connected to a storage tank 11, and a vacuum switch 7, an electromagnetic shut-off valve 8, and a solenoid shut-off valve 10 are arranged in this order from the cover member 5 side.
なお、電磁開閉弁８は真空スイツチ７に電気接
続されてこれに連動して配管６内の負圧が真空ス
イツチ７の設定圧より大きい場合は開閉弁８は開
き、小さい場合（設定圧から大気圧まで）には閉
じるようになつている。また、貯溜タンク１１は
減圧弁１２、配管１３および開閉弁１４を介して
SO2ガスボンベ１５に連通接続されており、該
SO2ガスボンベ１５は容器１６内の温度約40℃の
湯に漬されている。また前記鋳型箱１の中空室３
ａ，３ｂは配管１７，１８、脱臭装置１９および
配管２０を介して真空ポンプ２１に連通接続され
ている。 The electromagnetic on-off valve 8 is electrically connected to the vacuum switch 7, and in conjunction with this, the on-off valve 8 opens when the negative pressure in the piping 6 is higher than the set pressure of the vacuum switch 7, and opens when it is small (greater than the set pressure). It is designed to close when the pressure reaches atmospheric pressure). In addition, the storage tank 11 is connected via a pressure reducing valve 12, piping 13, and an on-off valve 14.
It is connected to the SO 2 gas cylinder 15, and the corresponding
The SO 2 gas cylinder 15 is immersed in hot water at a temperature of about 40°C in a container 16. Also, the hollow chamber 3 of the mold box 1
a and 3b are connected to a vacuum pump 21 via pipes 17 and 18, a deodorizing device 19, and a pipe 20.
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。真空スイツチ７および減圧弁１２の圧
力をあらかじめ所定の大きさに設定しかつガスボ
ンベ１５内のSO2を湯により暖めて気化させた状
態の下に、鋳型箱１の鋳型キヤビテイ２内にSO2
ガス硬化性粘結剤を含有した鋳物砂Ｓを充填す
る。次いで、カバー部材５を鋳型箱１の上面に被
せて鋳型キヤビテイ２の上端開口部を気密に被
い、続いて真空ポンプ２１を駆動するとともに電
磁開閉弁１０を開くと、真空ポンプ２１の吸引作
用によつて、配管６内の負圧が大きくなつて電磁
開閉弁８が開くとともに、貯溜タンク１１内の
SO2ガスは、配管６を経てカバー部材５に吸引さ
れ、鋳型キヤビテイ２内に導入されてここで鋳物
砂Ｓの粘結剤と反応して鋳物砂を硬化させながら
鋳物砂Ｓ中を貫流し、続いて、ベントホール４，
４、中空室３ａ，３ｂおよび配管１７，１８を順
に通つて脱臭装置１９に導入され、ここで中和さ
れたのち配管２０を通つて真空ポンプ２１から大
気中に排出される。 Next, the operation of the device configured as described above will be explained. The pressure of the vacuum switch 7 and the pressure reducing valve 12 are set in advance to a predetermined level, and the SO 2 in the gas cylinder 15 is heated and vaporized with hot water, and SO 2 is poured into the mold cavity 2 of the mold box 1.
Fill with foundry sand S containing a gas-curing binder. Next, the cover member 5 is placed on the upper surface of the mold box 1 to airtightly cover the upper end opening of the mold cavity 2, and then the vacuum pump 21 is driven and the electromagnetic on-off valve 10 is opened. As a result, the negative pressure inside the pipe 6 increases, the electromagnetic shut-off valve 8 opens, and the inside of the storage tank 11 increases.
The SO 2 gas is sucked into the cover member 5 via the pipe 6 and introduced into the mold cavity 2 where it reacts with the binder of the foundry sand S and hardens the foundry sand while flowing through the foundry sand S. , followed by vent hole 4,
4. The odor is introduced into the deodorizing device 19 through the hollow chambers 3a and 3b and the pipes 17 and 18, where it is neutralized and then discharged into the atmosphere from the vacuum pump 21 through the pipe 20.
ところで、何らかの原因で垂直割鋳型箱１の割
面、鋳型箱１とカバー部材５との合わせ面、その
他の箇所に隙間ができ、このため、真空ポンプ２
１が駆動していても配管６内の負圧が真空スイツ
チ７の設定圧より小さくなつた場合には、真空ス
イツチ７の指令により電磁開閉弁８が閉じられ、
したがつて、上記の隙間ができてもそこからSO2
ガスが外に漏出することはない。 By the way, for some reason, gaps are created at the split surface of the vertically split mold box 1, the mating surface between the mold box 1 and the cover member 5, and other places, and for this reason, the vacuum pump 2
1 is operating, if the negative pressure in the pipe 6 becomes lower than the set pressure of the vacuum switch 7, the electromagnetic on-off valve 8 is closed by a command from the vacuum switch 7.
Therefore, even if the above gap is created, SO 2
Gas will not leak outside.
このようにSO2ガスの貫流により鋳物砂Ｓが硬
化したのち電磁開閉弁１０を閉じてSO2ガスの供
給を停止し、続いてカバー部材５を鋳型箱１上か
ら取り去り、そのまま真空ポンプ２１を駆動して
鋳物砂Ｓ中の残溜SO2ガスを吸引除去する。な
お、カバー部材５を取り去ることにより配管６内
の負圧が小さくなつて電磁開閉弁８が閉じられ
る。その後、真空ポンプ２１の駆動を停止し、鋳
型の離型を行つて造型工程を完了する。 After the molding sand S is hardened by the flow of SO 2 gas, the electromagnetic on-off valve 10 is closed to stop the supply of SO 2 gas, and then the cover member 5 is removed from the mold box 1, and the vacuum pump 21 is turned on. The residual SO 2 gas in the foundry sand S is removed by suction. Note that by removing the cover member 5, the negative pressure in the pipe 6 is reduced and the electromagnetic on-off valve 8 is closed. Thereafter, the driving of the vacuum pump 21 is stopped, the mold is released, and the molding process is completed.
なお、実施例ではカバー部材５に配管６が連通
されているが、配置６を中空室３ａに連通し、配
管１７を削除してもよい。この場合、硬化ガス吸
引の際に鋳型キヤビテイ２の上端開口部を密封す
る必要がある。要するに配管６は硬化ガス吸入機
構部に連通されていればよいのである。また、有
害硬化ガスはSO2ガスに限定しない。 In the embodiment, the pipe 6 is connected to the cover member 5, but the arrangement 6 may be connected to the hollow chamber 3a and the pipe 17 may be deleted. In this case, it is necessary to seal the upper end opening of the mold cavity 2 when sucking the hardening gas. In short, the pipe 6 only needs to be connected to the curing gas suction mechanism. Further, the harmful curing gas is not limited to SO 2 gas.
以上の説明からも明らかなように本考案は、鋳
型造型装置の硬化ガス吸入機構部と硬化ガス貯溜
タンクとを配管により連通するとともに該配管に
は真空スイツチ、電磁開閉弁を順に取付け、真空
スイツチと電磁開閉弁とは電気接続したから、装
置の一部分に隙間ができたり、真空ポンプが異常
停止するなどの不都合が発生した場合でも、真空
スイツチが負圧の異常を検知して電磁開閉弁を閉
じることによつて、有害な硬化ガスが外に洩れる
のを未然に防止できる。 As is clear from the above description, the present invention connects the hardening gas suction mechanism of the mold making device and the hardening gas storage tank through piping, and the piping is equipped with a vacuum switch and an electromagnetic on-off valve in that order. The solenoid on-off valve is electrically connected to the solenoid on-off valve, so even if there is a gap in a part of the device or the vacuum pump stops abnormally, the vacuum switch will detect the negative pressure abnormality and open the solenoid on-off valve. By closing, harmful curing gas can be prevented from leaking outside.
図面は本考案の一実施例を示す一部断面構造図
である。
１：鋳型箱、２：鋳型キヤビテイ、３ａ，３
ｂ：中空室、５：カバー部材、７：真空スイツ
チ、８：電磁開閉弁、１９：脱臭装置、２１：真
空ポンプ。
The drawing is a partially sectional structural view showing an embodiment of the present invention. 1: Mold box, 2: Mold cavity, 3a, 3
b: hollow chamber, 5: cover member, 7: vacuum switch, 8: electromagnetic on-off valve, 19: deodorizing device, 21: vacuum pump.
Claims (1)
されていて硬化ガスが吸引により前記鋳型キビテ
イ２内に導入される鋳型箱１を含む鋳型造型装置
と、硬化ガス貯溜タンク１１と、を連通接続する
ガス硬化鋳型造型装置のガス吸入配管であつて、
前記鋳型造型装置の硬化ガス吸入機構部と硬化ガ
ス貯溜タンク１１とを配管６により連通するとと
もに該配管６には吸入機構部側から真空スイツチ
７、電磁開閉弁８、開閉弁１０を順次取付け、該
真空スイツチ７と電磁開閉弁８とを電気接続し、
もつて該電磁開閉弁８を真空スイツチ７の検知信
号に基づいて開閉するように配設したことを特徴
とするガス硬化鋳型造型装置のガス吸入配管。 A gas curing process in which a mold making device including a mold box 1 in which the mold cavity 2 is connected to a vacuum pump 21 and a hardening gas is introduced into the mold cavity 2 by suction, and a hardening gas storage tank 11 are connected in communication. Gas suction piping for mold making equipment,
The hardening gas suction mechanism section of the mold making apparatus and the hardening gas storage tank 11 are communicated through a pipe 6, and a vacuum switch 7, an electromagnetic on-off valve 8, and an on-off valve 10 are sequentially attached to the pipe 6 from the suction mechanism side, electrically connecting the vacuum switch 7 and the electromagnetic on-off valve 8;
A gas suction pipe for a gas hardening mold making apparatus, characterized in that the electromagnetic on-off valve 8 is arranged to open and close based on a detection signal from a vacuum switch 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10320683U JPS6011147U (en) | 1983-07-01 | 1983-07-01 | Gas suction piping for gas curing mold making equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10320683U JPS6011147U (en) | 1983-07-01 | 1983-07-01 | Gas suction piping for gas curing mold making equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6011147U JPS6011147U (en) | 1985-01-25 |
| JPH0140611Y2 true JPH0140611Y2 (en) | 1989-12-04 |
Family
ID=30242914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10320683U Granted JPS6011147U (en) | 1983-07-01 | 1983-07-01 | Gas suction piping for gas curing mold making equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6011147U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504455A (en) * | 1973-05-17 | 1975-01-17 | ||
| JPS5410225A (en) * | 1977-06-24 | 1979-01-25 | Sintokogio Ltd | Fabricating of cast by cold box method |
| JPS5460224A (en) * | 1977-10-21 | 1979-05-15 | Naniwa Seisakusho Kk | Gas generator for making cold box casting mold |
-
1983
- 1983-07-01 JP JP10320683U patent/JPS6011147U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504455A (en) * | 1973-05-17 | 1975-01-17 | ||
| JPS5410225A (en) * | 1977-06-24 | 1979-01-25 | Sintokogio Ltd | Fabricating of cast by cold box method |
| JPS5460224A (en) * | 1977-10-21 | 1979-05-15 | Naniwa Seisakusho Kk | Gas generator for making cold box casting mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6011147U (en) | 1985-01-25 |
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