JPH0347643U - - Google Patents
Info
- Publication number
- JPH0347643U JPH0347643U JP10884989U JP10884989U JPH0347643U JP H0347643 U JPH0347643 U JP H0347643U JP 10884989 U JP10884989 U JP 10884989U JP 10884989 U JP10884989 U JP 10884989U JP H0347643 U JPH0347643 U JP H0347643U
- Authority
- JP
- Japan
- Prior art keywords
- area
- compressed air
- cylinder
- piston
- main piston
- 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
- 238000005266 casting Methods 0.000 claims 4
- 239000003110 molding sand Substances 0.000 claims 4
- 238000007664 blowing Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
Landscapes
- Casting Devices For Molds (AREA)
Description
図面は本考案の一実施例を示す一部断面正面図
である。
６……吹出口、７……フレーム、８……シリン
ダ、１０……給気孔、１２……主ピストン、１３
……主弁、１４……従ピストン、１５……従弁、
１６……カバー部材、１７……排気筒、１８……
第１排気孔。
The drawing is a partially sectional front view showing an embodiment of the present invention. 6...Blowout port, 7...Frame, 8...Cylinder, 10...Air supply hole, 12...Main piston, 13
...Main valve, 14...Slave piston, 15...Slave valve,
16...Cover member, 17...Exhaust pipe, 18...
First exhaust hole.
Claims (1)
砂を投入した後、圧縮空気を前記鋳物砂の表面に
吹込み鋳物砂中を前記模型板へ向けて貫流させて
鋳物砂を圧縮し、生型を造型するようにした生型
造型設備における圧縮空気吹込み装置であつて、
前記鋳枠の上端開口部を閉鎖可能でかつ鋳枠の上
端開口部に臨む複数の圧縮空気吹出口を透設した
定盤状のフレームと；該フレームの上面に装着さ
れ、上下方向に指向するとともに上端部を蓋部で
閉鎖した円筒状体を成しかつ前記蓋部に第１排気
孔をまた胴下部に給気孔をそれぞれ設けたシリン
ダと；該シリンダ内に上下摺動可能に嵌合され、
上下に貫通する少なくとも１個以上の貫通孔を備
えた主ピストンと；該主ピストンの下面に装着さ
れ、該主ピストンが前記シリンダの給気孔付近ま
で下降した時に前記複数個の吹出口のうち少なく
とも１個以上の吹出口を閉鎖する複数個の主弁と
；前記主ピストンの前記貫通孔に気密状にして所
要高さ上下摺動可能に貫装された従ピストンと；
該従ピストンの下面の装着され、前記主ピストン
が下降して主弁が前記吹出口を閉鎖する時に同様
に下降して残りの前記吹出口を閉鎖する少なくと
も１個以上の従弁と；前記フレーム上に前記シリ
ンダを包囲するようにして気密状に装着されて該
フレームとで圧縮空気貯蔵タンクを構成するカバ
ー部材と；該カバー部材の天井部を気密状に貫通
して下方へ延びるとともに下端部が前記シリンダ
の蓋部に前記第１排気孔を包囲するようにして気
密状に装着された排気筒と：を具備し、前記主ピ
ストンの下面の面積から前記主弁の上面の面積を
差し引いた残りの面積をａ１、主ピストンの上面
の面積をＡ１、前記従ピストンの下面の面積から
前記従弁の上面の面積を差し引いた残りの面積を
ａ２、および従ピストンの上面の面積をＡ２とし
たとき、面積ａ２の面積Ａ２に対する比（ａ２：
Ａ２）が、面積ａ１の面積Ａ１に対する比（ａ１
：Ａ１）より大きく、さらに、前記シリンダの上
部内を３ポート２位置切換弁を介して、また前記
カバー部材内を圧力調整弁を介してそれぞれ圧縮
空気源に連通接続したことを特徴とする生型造型
設備における圧縮空気吹込み装置。 After casting molding sand into a casting flask placed on a model plate with vent holes, compressed air is blown into the surface of the molding sand to cause the molding sand to flow through toward the model plate to compress the molding sand, A compressed air blowing device in a green mold manufacturing equipment configured to mold a green mold,
a surface plate-like frame capable of closing the upper end opening of the casting flask and having a plurality of compressed air outlets facing the upper opening of the casting flask; mounted on the upper surface of the frame and oriented in the vertical direction; and a cylinder forming a cylindrical body whose upper end is closed by a lid, and having a first exhaust hole in the lid and an air supply hole in the lower part of the body; fitted in the cylinder so as to be vertically slidable. ,
a main piston provided with at least one or more through holes that penetrate vertically; mounted on the lower surface of the main piston, and when the main piston descends to the vicinity of the air supply hole of the cylinder, at least one of the plurality of air outlets; a plurality of main valves that close one or more air outlets; a slave piston installed in the through hole of the main piston in an airtight manner so as to be slidable up and down a required height;
at least one slave valve mounted on the lower surface of the slave piston, and which similarly descends to close the remaining outlet when the main piston descends and the main valve closes the outlet; a cover member that is airtightly attached to the top so as to surround the cylinder and constitute a compressed air storage tank with the frame; a lower end that extends downwardly through the ceiling of the cover member in an airtight manner; is equipped with an exhaust pipe airtightly attached to the lid of the cylinder so as to surround the first exhaust hole, and the area of the top surface of the main valve is subtracted from the area of the bottom surface of the main piston. The remaining area is a 1 , the area of the top surface of the main piston is A 1 , the area remaining after subtracting the area of the top surface of the slave valve from the area of the bottom surface of the slave piston is a 2 , and the area of the top surface of the slave piston is When A 2 is the ratio of area a 2 to area A 2 (a 2 :
A 2 ) is the ratio of area a 1 to area A 1 (a 1
: A1 ), and further characterized in that the inside of the upper part of the cylinder is connected to a compressed air source through a 3-port 2-position switching valve, and the inside of the cover member is connected to a compressed air source through a pressure regulating valve. Compressed air blowing device in green molding equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10884989U JPH0710829Y2 (en) | 1989-09-18 | 1989-09-18 | Compressed air blowing device in green molding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10884989U JPH0710829Y2 (en) | 1989-09-18 | 1989-09-18 | Compressed air blowing device in green molding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0347643U true JPH0347643U (en) | 1991-05-02 |
| JPH0710829Y2 JPH0710829Y2 (en) | 1995-03-15 |
Family
ID=31657465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10884989U Expired - Fee Related JPH0710829Y2 (en) | 1989-09-18 | 1989-09-18 | Compressed air blowing device in green molding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0710829Y2 (en) |
-
1989
- 1989-09-18 JP JP10884989U patent/JPH0710829Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0710829Y2 (en) | 1995-03-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |