JP2001198652A - Casting sand blowing apparatus - Google Patents
Casting sand blowing apparatusInfo
- Publication number
- JP2001198652A JP2001198652A JP2000003191A JP2000003191A JP2001198652A JP 2001198652 A JP2001198652 A JP 2001198652A JP 2000003191 A JP2000003191 A JP 2000003191A JP 2000003191 A JP2000003191 A JP 2000003191A JP 2001198652 A JP2001198652 A JP 2001198652A
- Authority
- JP
- Japan
- Prior art keywords
- sand
- storage tank
- molding
- tank
- compressed air
- 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
Landscapes
- Casting Devices For Molds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、模型板と枠部材と
圧縮板とで画成される造型室に圧縮空気により鋳物砂を
吹込む装置の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an apparatus for blowing molding sand with compressed air into a molding chamber defined by a model plate, a frame member and a compression plate.
【０００２】[0002]
【従来の技術】上記の造型室に圧縮空気によって鋳物砂
を吹込む際には、圧縮空気を混入して鋳物砂を流動化さ
せる必要があり、そのため、従来は、実公平２-１４８
３３号公報で開示されるよう、鋳物砂を一時貯留する砂
貯留槽を二重構造にするととともに、内部槽には圧縮空
気を通すが鋳物砂は通さない多数のスリットを透設して
内部槽内の鋳物砂をスリットから流入する圧縮空気によ
り流動化させるようにしたものや、特表平５-５０８１
１１号公報で開示されるよう、砂貯留槽の上部に圧縮空
気源に連通可能な給気管を接続し、その接続位置には圧
縮空気を鋳物砂の上方に誘導する空気通路を設けるとと
もに砂貯留槽の下部には鋳物砂流動化用の圧縮空気を噴
射させる流動管を設けたものがある。2. Description of the Related Art When molding sand is blown into a molding chamber by compressed air, it is necessary to mix the compressed air to fluidize the molding sand.
As disclosed in Japanese Patent No. 33, a sand storage tank for temporarily storing molding sand has a double structure, and a number of slits through which compressed air passes but molding sand does not pass through the internal tank. The molding sand inside is fluidized by the compressed air flowing from the slit.
As disclosed in JP-A-11, an air supply pipe capable of communicating with a compressed air source is connected to an upper portion of a sand storage tank, and an air passage for guiding compressed air above molding sand is provided at the connection position, and a sand storage tank is provided. Some tanks are provided with a flow tube at the lower part of the tank for injecting compressed air for fluidizing molding sand.
【０００３】しかし、鋳物砂に粘結剤が含まれているた
め、前者ではスリットが早期に詰まって鋳物砂の吹出し
が不良になりあるいは不可能になり、また、後者では構
造が複雑で高価なものになるなど問題があった。[0003] However, since the molding sand contains a binder, the former causes the slits to be clogged at an early stage, resulting in defective or impossible blow-out of the molding sand, and the latter requires a complicated and expensive structure. There was a problem such as becoming something.
【０００４】本発明は上記の事情に鑑みて成されたもの
で、その目的は、スリットを有する内部槽を設けること
なく圧縮空気を混入して鋳物砂を適確に吹き出させるこ
とができる上に構造が簡易な鋳物砂吹込み装置を提供す
ることにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to allow compressed air to be mixed and blown out of molding sand accurately without providing an internal tank having a slit. It is an object of the present invention to provide a casting sand blowing device having a simple structure.
【０００５】[0005]
【問題を解決するための手段】上記の目的を達成するた
めに本発明の鋳物砂吹込み装置は、模型板と枠部材と圧
縮板とで画成される造型室に圧縮空気により鋳物砂を吹
込む装置であって、鋳物砂を一時貯留可能でありかつ上
端部に砂投入口を下端部に砂吹出し口をそれぞれ有する
砂貯留槽と、この砂貯留槽の上部に連通接続され開閉弁
を介して圧縮空気源に連通可能な給気管と、前記砂貯留
槽の上部に連通接続され開閉弁を介して大気中に連通可
能な排気管と、前記砂貯留槽の天井壁に前記砂投入口を
内設させて垂設され前記給気管および前記排気管の接続
位置と連通する空間を前記砂貯留槽とで画成し、かつ上
端部にその外部と内部を連通すべく開口を有し、さらに
前記排気管からの排気による鋳物砂の排出を阻止可能な
位置まで下端が伸びる中空体状の仕切り部材と、を備え
ていて、前記仕切り部材内の所要位置まで鋳物砂を投入
することを特徴とする。Means for Solving the Problems In order to achieve the above object, a molding sand blowing device of the present invention is a device for blowing molding sand by compressed air into a molding chamber defined by a model plate, a frame member and a compression plate. A sand storage tank capable of temporarily storing casting sand and having a sand inlet at an upper end and a sand outlet at a lower end, and an on-off valve connected to the upper part of the sand storage tank. An air supply pipe communicable with a compressed air source through the air supply pipe, an exhaust pipe communicatively connected to an upper portion of the sand storage tank and communicable with the atmosphere via an on-off valve, and the sand inlet port on a ceiling wall of the sand storage tank The sand storage tank defines a space which is provided vertically and communicates with a connection position of the air supply pipe and the exhaust pipe, and has an opening at an upper end to communicate the outside and the inside thereof, Further, the lower end extends to a position where the discharge of the molding sand by the exhaust from the exhaust pipe can be prevented. That a hollow body shaped partition member, provided with a, and wherein placing the foundry sand to the required position of said partition member.
【０００６】このように構成されたものは、慣用の砂供
給手段により砂貯留槽の砂投入口から鋳物砂を、前記仕
切り部材内の所要位置まで投入した後、慣用の開閉機構
により砂投入口を気密に閉鎖する。次いで、開閉弁を開
いて給気管から砂貯留槽内に圧縮空気を供給すると、仕
切り部材の開口部から流入する圧縮空気によって仕切り
部材内の鋳物砂が加圧されるとともに、仕切り部材の下
端部から排出される圧縮空気によって砂貯留槽内の鋳物
砂が流動化されながら、鋳物砂が砂吹出し孔から吹き出
されて所定の造型室に吹き込まれることとなる。[0006] With the above-mentioned structure, after the casting sand is charged from a sand inlet of a sand storage tank to a required position in the partition member by a conventional sand supply means, the sand inlet is opened by a conventional opening / closing mechanism. Airtightly closed. Next, when the on-off valve is opened and compressed air is supplied from the air supply pipe into the sand storage tank, the molding sand in the partition member is pressurized by the compressed air flowing from the opening of the partition member, and the lower end of the partition member is pressed. While the molding sand in the sand storage tank is fluidized by the compressed air discharged from the container, the molding sand is blown out from the sand blowing hole and blown into a predetermined molding chamber.
【０００７】[0007]
【発明の実施の形態】本発明の一実施例について図面に
基づき詳細に説明する。本発明の鋳物砂吹込み装置は、
鋳物砂を一時貯留可能な砂貯留槽１と、砂貯留槽１の上
端部付近に連通接続され図示しない開閉弁を介して図示
しない圧縮空気源に連通可能な給気管２と、前記砂貯留
槽１の上端部付近に連通接続され開閉弁３を介して大気
中に連通可能な排気管４と、前記砂貯留槽１の天井壁に
垂設され前記給気管２および前記排気管４の接続位置と
連通する空間５を前記砂貯留槽１とで画成する中空体状
の仕切り部材６と、で構成してある。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to the drawings. The casting sand injection device of the present invention,
A sand storage tank 1 that can temporarily store casting sand, an air supply pipe 2 that is connected near the upper end of the sand storage tank 1 and that can be connected to a compressed air source (not shown) through an open / close valve (not shown), and the sand storage tank An exhaust pipe 4 which is connected to the vicinity of the upper end of the exhaust pipe 1 and which can communicate with the atmosphere via an on-off valve 3, and a connection position of the air supply pipe 2 and the exhaust pipe 4 which is vertically provided on the ceiling wall of the sand storage tank 1 And a hollow partition member 6 which defines a space 5 communicating with the sand storage tank 1.
【０００８】前記砂貯留槽１は、上下方向へ延びる中空
体状の上部槽７と、下部が二股に分かれかつ下端に２個
の砂吹出し孔８・８を有する下部槽９と、で構成してあ
る。そして、前記下部槽９は壁面の傾斜角度が相互に異
なる大傾斜角度壁９ａと小傾斜角度壁９ｂとで構成して
ある。また、前記上部槽７の天井壁には砂投入口１０が
設けてある。さらに、前記仕切り部材６は前記上部槽７
の天井壁に前記砂投入口１０を内側に位置させて垂設し
てある。なお、前記給気管２は前記上部槽７の右上部
に、また前記排気管４は前記上部槽７の左上部にそれぞ
れ連通接続してある。The sand storage tank 1 comprises a hollow upper tank 7 extending vertically and a lower tank 9 having a lower part bifurcated and two sand blowing holes 8.8 at the lower end. It is. The lower tank 9 is composed of a large-angle wall 9a and a small-angle wall 9b whose wall angles are different from each other. A sand inlet 10 is provided in the ceiling wall of the upper tank 7. Further, the partition member 6 is connected to the upper tank 7.
The sand inlet 10 is positioned vertically inside the ceiling wall of the vehicle. The supply pipe 2 is connected to the upper right of the upper tank 7 and the exhaust pipe 4 is connected to the upper left of the upper tank 7.
【０００９】また、前記仕切り部材６は、上端部にこれ
の外部と内部を連通すべく複数の開口１１・１１が等間
隔をおいて設けてあり、さらに前記排気管４からの排気
による鋳物砂の排出を阻止可能な位置まで下端が伸びて
いる。The partition member 6 is provided at its upper end with a plurality of openings 11 at equal intervals to communicate the outside and the inside thereof. The lower end extends to a position where it is possible to prevent the discharge of water.
【００１０】なお、図中符号１２はマッチプレート、１
３・１４は枠部材、１５・１６は圧縮板、１７は吹込み
ノズル、１８は開閉機構である。In the figure, reference numeral 12 denotes a match plate, 1
3 and 14 are frame members, 15 and 16 are compression plates, 17 is a blowing nozzle, and 18 is an opening / closing mechanism.
【００１１】次にこのように構成した装置の作用につい
て説明する。図１に示す状態から、マッチプレート１２
と枠部材１３・１４と圧縮板１５・１６とで画成される
２個の造型室に鋳物砂を吹込むには、まず、図示しない
慣用に砂供給手段により鋳物砂を砂貯留槽１の砂投入口
１０から仕切り部材６内に鋳物砂を、前記仕切り部材内
の所要位置まで投入した後、慣用の開閉機構１８により
砂投入口１０を気密に閉鎖する。Next, the operation of the above-configured device will be described. From the state shown in FIG.
In order to inject molding sand into the two molding chambers defined by the frame members 13 and 14 and the compression plates 15 and 16, first, the molding sand is supplied to the sand storage tank 1 by a conventional sand supply means (not shown). After casting sand is injected into the partition member 6 from the sand inlet 10 to a required position in the partition member 6, the sand inlet 10 is closed airtight by a conventional opening / closing mechanism 18.
【００１２】次いで、図示しない開閉弁を開いて給気管
２から砂貯留槽１内の空間５に圧縮空気を供給すると、
空間５内の一部の圧縮空気が仕切り部材６の開口１１・
１１から流入して仕切り部材６内の鋳物砂を加圧し、ま
た空間５内の他の圧縮空気が仕切り部材６の下端部位置
から排出されて砂貯留槽１内の鋳物砂を流動化するとと
もに鋳物砂の上部槽７壁面への付着を防止する。これに
より、鋳物砂が砂吹出し孔８・８から吹き出され吹込み
ノズル１７・１７を介して造型室に吹き込まれることと
なる。また、下部槽９の壁面を、傾斜角度が相互に異な
る大傾斜角度壁９ａと小傾斜角度壁９ｂとで構成するこ
とにより、下部槽９内の鋳物砂の自重による分力が相互
に異なるため、鋳物砂はブリッジが形成されることなく
円滑に移動されることとなる。Next, when an on-off valve (not shown) is opened to supply compressed air from the air supply pipe 2 to the space 5 in the sand storage tank 1,
Part of the compressed air in the space 5 is
11 and pressurizes the molding sand in the partition member 6, and another compressed air in the space 5 is discharged from the lower end position of the partition member 6 to fluidize the molding sand in the sand storage tank 1. It prevents casting sand from adhering to the wall surface of the upper tank 7. Thus, the molding sand is blown out from the sand blowing holes 8.8 and blown into the molding chamber via the blowing nozzles 17. In addition, since the wall surface of the lower tank 9 is composed of the large inclination angle wall 9a and the small inclination angle wall 9b having different inclination angles, the component force due to the own weight of the molding sand in the lower tank 9 is different from each other. Thus, the foundry sand is smoothly moved without forming a bridge.
【００１３】上記の実施例では、本装置は鋳型造型機の
造型室に対して上方から鋳物砂を吹き込むように構成し
てあるが、これに限定されるものではなく、例えば、図
２に示すように、実施例１と同様にマッチプレート１２
と枠部材１３・１４と圧縮板１５・１６とで画成される
２個の上・下造型室に対して、上方および下方からそれ
ぞれ鋳物砂を吹き込むようにしても同様の作用効果が得
られる。なお、図２では図１と同様の作用を有するもの
は同一の符号を適用してその説明を省略する。In the above embodiment, the present apparatus is configured to blow molding sand from above into the molding chamber of the mold molding machine. However, the present invention is not limited to this. For example, as shown in FIG. As in the case of the first embodiment, the match plate 12
A similar effect can be obtained by injecting molding sand from above and below into the two upper and lower molding chambers defined by the frame members 13 and 14 and the compression plates 15 and 16 respectively. . In FIG. 2, components having the same functions as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.
【００１４】[0014]
【発明の効果】以上の説明から明らかなように本発明
は、模型板と枠部材と圧縮板とで画成される造型室に圧
縮空気により鋳物砂を吹込む装置であって、鋳物砂を一
時貯留可能でありかつ上端部に砂投入口を下端部に砂吹
出し口をそれぞれ有する砂貯留槽と、この砂貯留槽の上
部に連通接続され開閉弁を介して圧縮空気源に連通可能
な給気管と、前記砂貯留槽の上部に連通接続され開閉弁
を介して大気中に連通可能な排気管と、前記砂貯留槽の
天井壁に前記砂投入口を内設させて垂設され前記給気管
および前記排気管の接続位置と連通する空間を前記砂貯
留槽とで画成し、かつ上端部にその外部と内部を連通す
べく開口を有し、さらに前記排気管からの排気による鋳
物砂の排出を阻止可能な位置まで下端が伸びる中空体状
の仕切り部材と、を備えていて、前記仕切り部材内の所
要位置まで鋳物砂を投入するようにしたから、スリット
を有する内部槽を設けることなく圧縮空気を適確に混入
して鋳物砂を吹き出させることができる上に、構造が従
来のこの種の装置と比較して極めて簡単になるなどの優
れた実用的効果を奏する。As is apparent from the above description, the present invention relates to an apparatus for blowing molding sand with compressed air into a molding chamber defined by a model plate, a frame member and a compression plate. A sand storage tank that can be temporarily stored and has a sand inlet at an upper end and a sand outlet at a lower end, and a supply that is connected to the upper part of the sand storage tank and that can communicate with a compressed air source via an on-off valve. A trachea, an exhaust pipe connected to the upper part of the sand storage tank and communicable with the atmosphere via an on-off valve, and the supply pipe which is vertically installed with the sand inlet port provided in a ceiling wall of the sand storage tank. A space communicating with a connection position of the trachea and the exhaust pipe is defined by the sand storage tank, and has an opening at an upper end for communicating the outside and the inside thereof. A hollow body-shaped partition member whose lower end extends to a position where discharge of In addition, since the molding sand is charged to a required position in the partition member, the molding sand can be blown out by appropriately mixing compressed air without providing an internal tank having a slit. In addition, the present invention has excellent practical effects such that the structure is extremely simple as compared with a conventional device of this type.
【図１】本発明の一実施例を示す概略正面図である。FIG. 1 is a schematic front view showing one embodiment of the present invention.
【図２】本発明の他の実施例を示す概略正面図である。FIG. 2 is a schematic front view showing another embodiment of the present invention.
Claims (2)
型室に圧縮空気により鋳物砂を吹込む装置であって、鋳
物砂を一時貯留可能でありかつ上端部に砂投入口を下端
部に砂吹出し口をそれぞれ有する砂貯留槽と、この砂貯
留槽の上部に連通接続され開閉弁を介して圧縮空気源に
連通可能な給気管と、前記砂貯留槽の上部に連通接続さ
れ開閉弁を介して大気中に連通可能な排気管と、前記砂
貯留槽の天井壁に前記砂投入口を内設させて垂設され前
記給気管および前記排気管の接続位置と連通する空間を
前記砂貯留槽とで画成し、かつ上端部にその外部と内部
を連通すべく開口を有し、さらに前記排気管からの排気
による鋳物砂の排出を阻止可能な位置まで下端が伸びる
中空体状の仕切り部材と、を備えていて、前記仕切り部
材内の所要位置まで鋳物砂を投入することを特徴とする
鋳物砂吹込み装置。An apparatus for injecting molding sand with compressed air into a molding chamber defined by a model plate, a frame member and a compression plate, wherein the molding sand can be temporarily stored and a sand inlet is provided at an upper end portion. A sand storage tank having a sand outlet at the lower end thereof, an air supply pipe connected to the upper part of the sand storage tank and capable of communicating with a compressed air source through an on-off valve, and a communication connection to the upper part of the sand storage tank An exhaust pipe that can communicate with the atmosphere via an on-off valve, and a space that is vertically installed with the sand inlet provided in the ceiling wall of the sand storage tank and communicates with a connection position between the air supply pipe and the exhaust pipe. And a hollow having an opening at the upper end for communicating the outside and the inside thereof, and a lower end extending to a position where discharge of the molding sand by exhaust from the exhaust pipe can be prevented. A partition member having a body shape, and a predetermined position in the partition member. Sand blowing device, which comprises introducing molding sand.
て、前記砂貯留槽は上部槽と下部槽とで構成し、この下
部槽は壁面の傾斜角度が相互に異なる大傾斜角度壁と小
傾斜角度壁とで構成したことを特徴とする鋳物砂吹込み
装置。2. The casting sand injection device according to claim 1, wherein said sand storage tank comprises an upper tank and a lower tank, and said lower tank has a large inclination angle wall having different inclination angles of wall surfaces. A casting sand blowing device characterized by comprising a small inclined angle wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000003191A JP2001198652A (en) | 2000-01-12 | 2000-01-12 | Casting sand blowing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000003191A JP2001198652A (en) | 2000-01-12 | 2000-01-12 | Casting sand blowing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001198652A true JP2001198652A (en) | 2001-07-24 |
Family
ID=18532176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000003191A Pending JP2001198652A (en) | 2000-01-12 | 2000-01-12 | Casting sand blowing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001198652A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397038A (en) * | 2015-12-30 | 2016-03-16 | 苏州明志科技有限公司 | Anti-blocking sand shooting and exhausting mechanism and method |
| CN107872992A (en) * | 2015-06-12 | 2018-04-03 | 迪萨工业有限公司 | The method of sand mo(u)ld machine and manufacture mould |
| WO2021220586A1 (en) * | 2020-04-27 | 2021-11-04 | ヤマハ発動機株式会社 | Sand mold shaping device |
-
2000
- 2000-01-12 JP JP2000003191A patent/JP2001198652A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107872992A (en) * | 2015-06-12 | 2018-04-03 | 迪萨工业有限公司 | The method of sand mo(u)ld machine and manufacture mould |
| CN107872992B (en) * | 2015-06-12 | 2019-06-11 | 迪萨工业有限公司 | The method of sand mo(u)ld machine and manufacture mold |
| CN105397038A (en) * | 2015-12-30 | 2016-03-16 | 苏州明志科技有限公司 | Anti-blocking sand shooting and exhausting mechanism and method |
| WO2021220586A1 (en) * | 2020-04-27 | 2021-11-04 | ヤマハ発動機株式会社 | Sand mold shaping device |
| JP6976500B1 (en) * | 2020-04-27 | 2021-12-08 | ヤマハ発動機株式会社 | Sand molding equipment |
| CN114096360A (en) * | 2020-04-27 | 2022-02-25 | 雅马哈发动机株式会社 | Sand mold manufacturing device |
| TWI816107B (en) * | 2020-04-27 | 2023-09-21 | 日商山葉發動機股份有限公司 | Sand mold making device |
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