JPS6352741A - Shaping method of mold for full mold casting - Google Patents
Shaping method of mold for full mold castingInfo
- Publication number
- JPS6352741A JPS6352741A JP19770386A JP19770386A JPS6352741A JP S6352741 A JPS6352741 A JP S6352741A JP 19770386 A JP19770386 A JP 19770386A JP 19770386 A JP19770386 A JP 19770386A JP S6352741 A JPS6352741 A JP S6352741A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- silica sand
- box
- mold box
- casting
- 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.)
- Pending
Links
- 238000010115 full-mold casting Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims description 7
- 238000007493 shaping process Methods 0.000 title 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 127
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 39
- 239000004576 sand Substances 0.000 claims abstract description 38
- 238000000465 moulding Methods 0.000 claims description 23
- 238000005266 casting Methods 0.000 abstract description 6
- 230000010355 oscillation Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、フルモールド鋳造用鋳型を造型するのに好適
な方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method suitable for manufacturing a full mold casting mold.
（従来の技術）
一般にフルモールド鋳造においては、鋳型箱内に装入さ
れた珪砂の中に消失模型を埋設して鋳型を造型するよう
にしている。しかしながら、特に消失模型の形状が複雑
な場合には消失模型を珪砂中に埋設した時、珪砂を消失
模型の隅々に隈なく移動させて充填することは非常にむ
ずかしく、かくして、従来からフルモールド鋳造用鋳型
の造型方法が種々試みられてきたが、満足すべき方法は
まだなく、種々鋳造欠陥を誘発させていた。(Prior Art) Generally, in full mold casting, a mold is produced by embedding a disappearing model in silica sand charged into a mold box. However, when the disappearing model is buried in silica sand, especially when the shape of the disappearing model is complex, it is very difficult to move and fill every corner of the disappearing model with silica sand. Although various methods have been tried for making casting molds, none of them have been satisfactory and have caused various casting defects.
（発明の目的）
本発明は上記の事情に鑑みてなされたもので、消失模型
を珪砂中に埋設する時に珪砂を消失模型の隅々にまで隈
なく移動させ充填せしめることができるフルモールド鋳
造用鋳型の造型方法を提供することを目的とする。(Object of the Invention) The present invention has been made in view of the above circumstances, and is for use in full mold casting, which allows silica sand to be moved and filled into every corner of the disappearing model when the disappearing model is buried in silica sand. The purpose is to provide a molding method.
Ｃ問題点を解決するための手段）
本発明におけるフルモールド鋳造用鋳型の造型方法は、
鋳型箱内に消失模型を配置するとともに珪砂を装入して
該消失模型を前記珪砂の中に埋没させ、珪砂を装入した
前記鋳型箱に可撓性の遮蔽膜を被せて該鋳型箱の」二端
開ロ部を閉鎖して該鋳型箱内を吸引減圧せしめ、該鋳型
箱内を減圧せしめながら該鋳型箱と鋳型箱内の珪砂に振
動を付与し、その後、振動を付与したまま前記鋳型箱内
からの吸引を停止−トするとともに該鋳型箱内を大気に
連通させて鋳型箱内に空気を流入させもって珪砂を消失
模型の隅々に隈なく充填させることを特徴とするもので
ある。Means for Solving Problem C) The method for manufacturing a full mold casting mold in the present invention is as follows:
A vanishing model is placed in a molding box, and silica sand is charged to bury the vanishing model in the silica sand.The molding box charged with silica sand is covered with a flexible shielding film, and the molding box is closed. '' Close the opening at both ends to reduce the pressure inside the mold box by suction, apply vibration to the mold box and the silica sand in the mold box while reducing the pressure inside the mold box, and then, while applying the vibration, This method is characterized by stopping the suction from inside the molding box and communicating the inside of the molding box with the atmosphere to allow air to flow into the molding box, thereby filling every nook and corner of the vanishing model with silica sand. be.
（発明の実施例）
以下、本発明の−・実施例について図面に基づき詳細に
説明する。基台（１）」二に圧縮コイルばね（２） （
２）を介して弾性支持された振動テーブル（３）の上面
に鋳型箱（４）を載置するとともにクランプ装置（５）
により鋳型箱（４）を固定し、続いて、鋳型箱（４）の
底に珪砂（６）を敷いた後消失模型（７）を配置し、そ
の後さらに珪砂（６）を投入しもって消失模型（７）を
珪砂（６）中に埋没させる。次いで、珪砂（６）を装入
した鋳型箱（４）に可撓性の遮蔽膜（８）を被せて鋳型
箱（４）の−■二端開口部を閉鎖し、続いて、三方口１
方向切換弁（９）を切り換えて鋳型箱（４）の底部に形
成された中空室（１０）を真空ポンプ（１１）に連通さ
せ、中空室（１０）内を吸引減圧する。中空室（１０）
内の減圧により、珪砂（６）を装入した鋳型箱（４）内
はペンドプラグ（１２） （１２）を介して吸引されて
減圧せしめられる。鋳型箱（４）内を減圧すると同時に
、振動テーブル（３）に装着された発振装置（１３）
（１３）を駆動して鋳型箱（４）、珪砂（６）等に振動
を付す−する。すると、珪砂（６）はある程度移動して
消失模型（７）と珪砂（６）とで形成される隙間が減少
される。次いで、発振装置（１３） （１３）を駆動し
たまま三方１−１方向切換弁（９）を切り換えて中空室
（１０）を真空ポンプ（１１）から遮断するとともに大
気に連通させる。すると、空気が中空室（１０）、ペン
ドプラグ（１２） （１２）を順に通過して、珪砂（６
）内蔵の鋳型箱（４）内に流入し、この空気の流入によ
り珪砂（６）がさらに移動されて前記隙間が珪砂（６）
で埋められる。かくして、珪砂（６）は消失模型（７）
の隅々にまで移動され隈なく充填されて所望のフルモー
ルド鋳造用鋳型が得られれ
なお、消失模型（７）の形状がより複雑な場合には、三
方口方向切換弁（９）を適当数切り換えて鋳型箱（４）
内における吸引減圧と空気流入を数回繰り返すことによ
り、珪砂（６）を完全に充填することもできる。(Embodiments of the invention) Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Compression coil spring (2) on the base (1) (
The mold box (4) is placed on the upper surface of the vibrating table (3) which is elastically supported via the clamping device (5).
to fix the molding box (4), then spread silica sand (6) on the bottom of the molding box (4), place the vanishing model (7), and then add more silica sand (6) to make the vanishing model. (7) is buried in silica sand (6). Next, the molding box (4) charged with the silica sand (6) is covered with a flexible shielding film (8) to close the -■ two end openings of the molding box (4), and then the three-way opening 1 is closed.
The directional control valve (9) is switched to communicate the hollow chamber (10) formed at the bottom of the mold box (4) with the vacuum pump (11) to reduce the pressure inside the hollow chamber (10). Hollow chamber (10)
Due to the reduced pressure inside, the inside of the molding box (4) charged with silica sand (6) is suctioned through the pend plugs (12) (12) and the pressure is reduced. At the same time as reducing the pressure inside the mold box (4), the oscillation device (13) attached to the vibration table (3)
(13) to vibrate the mold box (4), silica sand (6), etc. Then, the silica sand (6) moves to some extent and the gap formed between the vanishing model (7) and the silica sand (6) is reduced. Next, while driving the oscillating device (13), the three-way 1-1 directional switching valve (9) is switched to isolate the hollow chamber (10) from the vacuum pump (11) and to communicate it with the atmosphere. Then, the air passes through the hollow chamber (10), the pend plug (12) (12) in order, and the silica sand (6).
) flows into the built-in molding box (4), and the silica sand (6) is further moved by this inflow of air, and the gap is filled with silica sand (6).
It is filled with Thus, silica sand (6) is a disappearing model (7)
If the desired full-molded casting mold cannot be obtained by moving and filling every nook and cranny of the mold, and if the shape of the vanishing model (7) is more complicated, an appropriate number of three-way opening directional control valves (9) can be installed. Switch to mold box (4)
The silica sand (6) can be completely filled by repeating suction depressurization and air inflow several times.
（発明の効果）
以上の説明からも明らかなように本発明は、フルモール
ド鋳造用鋳型を造型するに当り、鋳型箱（４）および珪
砂（６）に振動を付Ｉ′ｊ、すると同時に、少なくとも
１回、珪砂（６）内蔵の鋳型箱（４）内を吸引減圧した
後吸引減圧を解除して空気を流入させるようにしたから
、振動、吸引および空気流入が有機的に作用しあって、
消失模型（７）の形状が複雑な場合でも、珪砂（６）を
消失模型（７）の隅々ニマテ隈なく適確に移動させ、所
望のフルモード鋳型を造型できるなどの優れた効果を奏
する。(Effects of the Invention) As is clear from the above description, the present invention applies vibration to the mold box (4) and the silica sand (6) when molding a full mold casting mold, and at the same time: At least once, the inside of the molding box (4) containing the silica sand (6) was depressurized by suction, and then the suction depressurization was released to allow air to flow in, so vibration, suction, and air inflow interacted organically. ,
Even when the shape of the vanishing model (7) is complex, the silica sand (6) can be accurately moved to every corner of the vanishing model (7), producing excellent effects such as being able to mold a desired full-mode mold. .
Claims (1)
該消失模型を前記珪砂の中に埋没させ、珪砂を装入した
前記鋳型箱に可撓性の遮蔽膜を被せて該鋳型箱の上端開
口部を閉鎖して該鋳型箱内を吸引減圧せしめ、該鋳型箱
内を減圧せしめながら該鋳型箱と鋳型箱内の珪砂に振動
を付与し、その後、振動を付与したまま前記鋳型箱内か
らの吸引を停止するとともに該鋳型箱内を大気に連通さ
せて鋳型箱内に空気を流入させもって珪砂を消失模型の
隅々に隈なく充填せしめることを特徴とするフルモール
ド鋳造用鋳型の造型方法。A vanishing model is placed in a molding box, and silica sand is charged to bury the vanishing model in the silica sand.The molding box charged with silica sand is covered with a flexible shielding film, and the molding box is closed. The upper end opening is closed and the inside of the molding box is suctioned and depressurized, and while the inside of the molding box is depressurized, vibrations are applied to the molding box and the silica sand in the molding box, and then, while the vibrations are being applied, the inside of the molding box is A mold for full mold casting, characterized in that suction from the mold box is stopped, and the inside of the mold box is communicated with the atmosphere to allow air to flow into the mold box, thereby filling every nook and corner of the vanishing model with silica sand. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19770386A JPS6352741A (en) | 1986-08-22 | 1986-08-22 | Shaping method of mold for full mold casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19770386A JPS6352741A (en) | 1986-08-22 | 1986-08-22 | Shaping method of mold for full mold casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6352741A true JPS6352741A (en) | 1988-03-05 |
Family
ID=16378952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19770386A Pending JPS6352741A (en) | 1986-08-22 | 1986-08-22 | Shaping method of mold for full mold casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6352741A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0489509A2 (en) * | 1990-11-14 | 1992-06-10 | Mitsubishi Jukogyo Kabushiki Kaisha | Method of manufacturing core and mold |
| EP1484125A2 (en) * | 2003-06-04 | 2004-12-08 | Laempe + Gies GmbH | Method and apparatus for producing cores and/or moulds by using ultrasonic vibration |
| CN107931580A (en) * | 2018-01-05 | 2018-04-20 | 青岛宏新天机械有限公司 | One kind vibration auxiliary model casting device and casting process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60162553A (en) * | 1984-01-31 | 1985-08-24 | Toyota Motor Corp | Molding method in packed casting method |
-
1986
- 1986-08-22 JP JP19770386A patent/JPS6352741A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60162553A (en) * | 1984-01-31 | 1985-08-24 | Toyota Motor Corp | Molding method in packed casting method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0489509A2 (en) * | 1990-11-14 | 1992-06-10 | Mitsubishi Jukogyo Kabushiki Kaisha | Method of manufacturing core and mold |
| EP1484125A2 (en) * | 2003-06-04 | 2004-12-08 | Laempe + Gies GmbH | Method and apparatus for producing cores and/or moulds by using ultrasonic vibration |
| EP1484125A3 (en) * | 2003-06-04 | 2005-08-24 | Laempe + Gies GmbH | Method and apparatus for producing cores and/or moulds by using ultrasonic vibration |
| CN107931580A (en) * | 2018-01-05 | 2018-04-20 | 青岛宏新天机械有限公司 | One kind vibration auxiliary model casting device and casting process |
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