JPH0713896Y2 - Compressed air blowing device in green molding equipment - Google Patents

Compressed air blowing device in green molding equipment

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Publication number
JPH0713896Y2
JPH0713896Y2 JP5254290U JP5254290U JPH0713896Y2 JP H0713896 Y2 JPH0713896 Y2 JP H0713896Y2 JP 5254290 U JP5254290 U JP 5254290U JP 5254290 U JP5254290 U JP 5254290U JP H0713896 Y2 JPH0713896 Y2 JP H0713896Y2
Authority
JP
Japan
Prior art keywords
compressed air
valve
frame
sand
molding
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 - Fee Related
Application number
JP5254290U
Other languages
Japanese (ja)
Other versions
JPH0412347U (en
Inventor
宇吉 大石
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sintokogio Ltd
Original Assignee
Sintokogio Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sintokogio Ltd filed Critical Sintokogio Ltd
Priority to JP5254290U priority Critical patent/JPH0713896Y2/en
Publication of JPH0412347U publication Critical patent/JPH0412347U/ja
Application granted granted Critical
Publication of JPH0713896Y2 publication Critical patent/JPH0713896Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【考案の詳細な説明】 (産業上の利用分野) 本考案は、鋳枠内の鋳物砂の表面に圧縮空気を吹込み、
当該圧縮空気を鋳物砂中を貫流させ模型板から排出させ
て鋳物砂を予備圧縮し、その後この鋳物砂を圧縮板で圧
縮して生型を造型するようにした生型造型設備において
前記鋳物砂表面に大量の圧縮空気を一気に吹込むのに好
適な装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention blows compressed air onto the surface of the molding sand in the flask,
The compressed sand is discharged through the model sand through the molding sand to pre-compress the molding sand, and then the molding sand is compressed by the compression plate to mold the green mold. The present invention relates to a device suitable for blowing a large amount of compressed air onto a surface at once.

(従来の技術) 本出願人は、先に生型造型設備の一つとして実開平1-80
247号公報で開示されるようなものを開発して提供して
いる。この生型造型設備は、鋳枠を載置した模型板を昇
降させるテーブルの上方に、カバー部材と、底板に圧縮
空気吹出口を有する圧縮空気貯蔵タンクとを配設すると
ともに、前記吹出口を、空圧シリンダの伸縮作動により
昇降する弁で開閉する構造にして、鋳枠内に鋳物砂を投
入した後鋳枠の上端開口部をカバー部材で閉鎖するとと
もにカバー部材上にタンクを重ね合わせ、続いて空圧シ
リンダを作動してタンクの底板の吹出口を開き、タンク
内の圧縮空気をカバー部材を介して鋳枠内に吹込み、圧
縮空気で鋳物砂を圧縮するとともに圧縮空気を鋳物砂中
を貫流させて模型板から排出させ、さらにスクイズプレ
ートで圧縮して鋳物砂を固化させて生型を造型するよう
にしたものである (考案が解決しようとする課題) ところで、上述した生型造型設備では、鋳枠内の鋳物砂
に対して大量の圧縮空気を一気に吹込む必要があるが、
空圧シリンダは、配管、切換弁等を介して圧縮空気源に
連通接続してあるため、作動時に残留圧縮空気による抵
抗が作用して作動が遅くなる。これに伴い、吹き出口を
高速度で大きく開いて大量の圧縮空気を一気に吹込むこ
とができず、生型造型設備の造型性能が低下するなどの
問題があった。
(Prior Art) The applicant of the present invention previously found that as one of the green molding equipment,
We have developed and provided the one disclosed in Japanese Patent No. 247. This green molding equipment is provided with a cover member and a compressed air storage tank having a compressed air blowout port on the bottom plate above the table for raising and lowering the model plate on which the casting frame is placed, and the blowout port is provided. , With a structure that opens and closes with a valve that moves up and down due to the expansion and contraction operation of the pneumatic cylinder, closes the upper end opening of the molding frame with a cover member after charging the molding sand into the molding frame, and stacks the tank on the cover member, Subsequently, the pneumatic cylinder is operated to open the outlet of the bottom plate of the tank, the compressed air in the tank is blown into the flask through the cover member, and the compressed sand is compressed with the compressed air. The raw mold is made to flow through the model plate, discharged from the model plate, and then compressed with a squeeze plate to solidify the foundry sand (problems to be solved by the invention). Construction In the equipment, but once there is a blown requires a large amount of compressed air to the foundry sand in the cast frame,
Since the pneumatic cylinder is connected to a compressed air source via a pipe, a switching valve, etc., the resistance of the residual compressed air acts during the operation to delay the operation. Along with this, there is a problem that a large amount of compressed air cannot be blown in at a high speed by opening the blowout port at a high speed, and the molding performance of the green molding equipment is deteriorated.

本考案は上記の問題を解決するためになされたものであ
る。
The present invention has been made to solve the above problems.

(課題を解決するための手段) 上記の目的を達成するために、本考案の生型造型設備に
おける圧縮空気吹込み装置は、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圧縮空気吹出口を透
設した定盤状のフレームを設け、このフレーム上にフレ
ームとで圧縮空気貯蔵タンクを構成するカバーを前記吹
出口を内側に位置させて気密状に装着し、このカバー内
における前記フレーム上には、上面平坦状の蓋を一体的
に設けた筒状の弁台を前記吹出口を内側に位置させて気
密状に装着し、この弁台の蓋部に上下に貫通する貫通孔
を透設し、この貫通孔には上端部にフランジを有する筒
体を所要距離上下動可能に貫装し、前記フレーム上面の
前記貫通孔の周囲には、下降時の前記フランジと弁台上
面との間をシールする環状のシールを固着し、前記カバ
ー上には、そのピストンロッドがカバーの天井壁を気密
に上下摺動可能に貫通するシリンダを装着し、ピストン
ロッドの下部には、前記フランジとほぼ同一の外寸を有
して前記筒体の上端開口部を閉鎖可能な弁を、直接的に
または圧縮コイルばねを介して間接的に装着するように
したものである。
(Means for Solving the Problems) In order to achieve the above object, the compressed air blowing device in the green molding equipment of the present invention is capable of closing the upper end opening of the flask and the upper opening of the flask. A platen-like frame is provided through which a compressed air outlet facing the above is provided, and a cover constituting a compressed air storage tank with the frame is mounted on this frame in an airtight manner with the outlet located inside. On the frame in the cover, a cylindrical valve base integrally provided with a flat upper surface is attached in an airtight manner with the air outlet being located inside, and the lid of the valve base is vertically mounted. A through hole is formed through the through hole, and a cylindrical body having a flange at the upper end is penetrated through the through hole so that the cylinder can move up and down by a required distance, and the flange at the time of descending is provided around the through hole on the upper surface of the frame. A ring-shaped seal is fixed to seal between Then, on the cover, a cylinder whose piston rod penetrates the ceiling wall of the cover in a vertically airtight manner is mounted, and the lower portion of the piston rod has an outer dimension substantially the same as that of the flange. A valve capable of closing the upper end opening of the cylindrical body is directly or indirectly mounted via a compression coil spring.

(作用) 鋳物砂を投入するとともに上端開口部をフレームの下面
に当接させた鋳枠に圧縮空気を吹込むために、シリンダ
を収縮作動して弁を上昇させる。すると、弁の上昇にと
もない、フランジの下面に作用する空気圧によって筒体
は弁と一緒に所定高さ上昇し、その後弁が筒体から分離
して弁だけが上昇するとともに、筒体はフランジの上面
にも空気圧が作用して下降する。これにより、筒体と弁
とは高速度で大きく分離され、この結果、カバー内の圧
縮空気は筒体内を通って吹出口から鋳枠内に一気に吹込
まれることとなる。
(Operation) In order to inject the molding sand and blow the compressed air into the flask having the upper end opening in contact with the lower surface of the frame, the cylinder is contracted to raise the valve. Then, as the valve rises, the air pressure acting on the lower surface of the flange causes the cylinder to rise by a predetermined height together with the valve, and then the valve separates from the cylinder and only the valve rises, and the cylinder moves toward the flange. Air pressure also acts on the upper surface, causing it to descend. As a result, the cylinder and the valve are largely separated at a high speed, and as a result, the compressed air in the cover passes through the cylinder and is blown at once from the blowout port into the flask.

(実施例) 実施例について図面を参照して説明すると、第1図にお
いて、定盤状の基台(1)の中央部に、上向きのシリン
ダ(2)を介してテーブル(3)が昇降可能に設けら
れ、さらに基台(1)上の四隅には支柱(4)(4)が
立設されている。支柱(4)(4)の中段位置間には左
右方向に延びるつば付きローラコンベヤ(5)が、また
支柱(4)(4)の上端間には中央付近に圧縮空気の吹
出口(6)(6)を有する定盤状のフレーム(7)がそ
れぞれ架設されている。フレーム(7)上には、これと
で圧縮空気貯蔵タンクを構成するカバー(8)が吹出口
(6)(6)を内側に位置させて気密状に装着され、さ
らにフレーム(7)上におけるカバー(8)内には、上
面平坦状の蓋を有する筒状の弁台(9)が吹出口(6)
(6)を内側に位置させて気密状に装着されている。弁
台(9)の蓋部には第2図に示すように上下に貫通する
貫通孔(10)(10)が複数個透設されて、各貫通孔(1
0)には上端にフランジ(11a)を有する筒体(11)が上
下動自在に貫装されている。この筒体(11)は、胴外面
下部に所要長さの溝(12)を有し、この溝(12)に、弁
台(9)の蓋部下面に取り付けたストッパ(26)(26)
の一端が進入していて、所定高さ以上は上昇できないよ
うになっている。また、前記弁台(9)上面における前
記貫通孔(10)の周囲には、下降時の前記フランジ(11
a)と弁台(9)との間をシールする環状のシール(1
3)が設けられている。また、第1図に示すように前記
カバー(8)の上面には、これの天井壁を気密に上下摺
動可能に貫通するピストンロッド(14a)を有するシリ
ンダ(14)が装着され、このシリンダ(14)のピストン
ロッド(14a)の下部には、前記筒体(11)(11)の上
端開口部を閉鎖可能な弁(15)(15)が、ブラケット
(16)を介して取り付けられており、この弁(15)の外
寸は前記フランジ(11a)のそれとほぼ同一である。ま
た、ブラケット(16)には弁台(9)上面に当たってブ
ラケット(16)の下降を停止させるストッパ(17)が固
着されている。
(Example) An example will be described with reference to the drawings. In Fig. 1, a table (3) can be moved up and down through a cylinder (2) facing upward at a central portion of a base (1) having a platen shape. Further, columns (4) and (4) are erected at four corners on the base (1). A roller conveyor (5) with a collar extending in the left-right direction is provided between the middle positions of the columns (4) and (4), and a compressed air outlet (6) is provided near the center between the upper ends of the columns (4) and (4). A platen frame (7) having (6) is erected. A cover (8), which constitutes a compressed air storage tank together with the frame (7), is airtightly mounted with the outlets (6) and (6) located inside, and further on the frame (7). Inside the cover (8), a cylindrical valve base (9) having a flat upper surface lid is provided with an outlet (6).
(6) is located inside and is mounted in an airtight manner. As shown in FIG. 2, a plurality of through holes (10) (10) penetrating vertically are provided in the lid portion of the valve base (9) so that each through hole (1
A cylindrical body (11) having a flange (11a) at its upper end is vertically movably mounted in (0). The tubular body (11) has a groove (12) of a required length on the lower portion of the outer surface of the body, and stoppers (26) (26) attached to the lower surface of the lid of the valve base (9) in the groove (12).
Since one end of the above has entered, it cannot rise above a predetermined height. The flange (11) when descending is provided around the through hole (10) on the upper surface of the valve base (9).
An annular seal (1) that seals between a) and the valve seat (9)
3) is provided. As shown in FIG. 1, a cylinder (14) having a piston rod (14a) penetrating the ceiling wall of the cover (8) in an airtight manner so as to be vertically slidable is mounted on the upper surface of the cover (8). Valves (15) (15) capable of closing the upper end openings of the cylinders (11) (11) are attached to the lower part of the piston rod (14a) of (14) via a bracket (16). The outer size of the valve (15) is almost the same as that of the flange (11a). Further, a stopper (17) is fixed to the bracket (16) and contacts the upper surface of the valve base (9) to stop the lowering of the bracket (16).

また、前記カバー(8)およびシリンダ(14)は、減圧
弁(18)、4ポート2位置切換弁(19)をそれぞれ介し
て圧縮空気源(20)に連通接続されている。なお、図中
(21)はフレーム(7)の下面に取り付けた空気分散
板、(22)は空気分散板(21)を囲むようにしてフレー
ム(7)の下面に取り付けた枠体、(23)はベントホー
ル付き模型板、(24)は鋳枠、(25)は盛枠である。
The cover (8) and the cylinder (14) are connected to the compressed air source (20) through the pressure reducing valve (18) and the 4-port 2-position switching valve (19). In the figure, (21) is an air dispersion plate attached to the lower surface of the frame (7), (22) is a frame body attached to the lower surface of the frame (7) so as to surround the air dispersion plate (21), and (23) is A model plate with a vent hole, (24) is a casting frame, and (25) is a filling frame.

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。予め減圧弁(18)を調整して所定圧に制御された圧
縮空気をカバー(8)内に供給しておく。この状態の下
に、模型板(23)上の鋳枠(24)および盛り枠(25)の
内部に鋳物砂(S)を投入し、これらをつば付きローラ
コンベーヤ(5)によりテーブル(3)の直上方位置に
搬入したのちシリンダ(2)の伸長作動によりテーブル
(3)で押し上げ、盛り枠(25)を枠体(22)に当接さ
せる(第1図参照)。次いで、切り替弁(19)の切り替
えによりシリンダ(14)を収縮作動して弁(15)(15)
を上昇させると、筒体(11)のフランジ(11a)の下面
に圧縮空気による上向きの力が作用して、筒体(11)
(11)は弁(15)(15)に当接したまま弁(15)(15)
と一緒に上昇し、筒体(11)(11)の溝(12)の下部面
がストッパ(26)(26)の下面に当たって筒体(11)
(11)の上昇が停止されたのちは、弁(15)(15)だけ
が上昇して弁(15)(15)と筒体(11)(11)とは分離
され、これに伴ってフランジ(11a)(11a)の上面には
圧縮空気による下向きの力が作用して筒体(11)(11)
は押し下げられ、この結果、弁(15)(15)と筒体(1
1)(11)とはより高速度で大きく分離されることとな
り、カバー(8)内の圧縮空気が筒体(11)(11)内を
通ったのち吹出口(6)(6)から大量にして一気に吹
き出されることとなる。吹き出された圧縮空気は、空気
分散板(21)で分散されたのち鋳物砂(S)を圧縮する
とともに鋳物砂(S)中を貫流して模型板(23)のベン
トホールから排出され、この結果、鋳物砂(S)は予備
圧縮されることとなる。鋳物砂(S)の予備圧縮完了
後、切り替え弁(19)の切り替えによりシリンダ(14)
を伸長作動して、弁(15)(15)を下降させて筒体(1
1)(11)の上端開口部を閉鎖するとともに、フランジ
(11a)(11a)でシール(13)(13)を適宜押圧し、こ
れにより、弁台(9)の外側と内側とを気密状に仕切
り、吹出口(6)(6)からの圧縮空気の吹出しを停止
する。次いで、シリンダ(2)の収縮作動によりテーブ
ル(3)等を下降させ、続いて、鋳枠(24)内の鋳物砂
(S)の直上方位置に図示しない圧縮板を搬入する。次
いで、再びシリンダ(2)の伸長作動により鋳物砂
(S)内蔵の鋳枠(24)等を上昇させて、鋳枠(24)内
の鋳物砂を圧縮板と模型板(23)とで圧縮し固化させ
る。次いで、シリンダ(2)の収縮作動によりテーブル
(3)等を再び下降させて生型内蔵の鋳枠(24)をつば
付きローラコンベヤ(5)上に載置するとともに型抜き
を行い、続いて、鋳枠(24)等をつば付きローラコンベ
ヤ(5)によりテーブル(3)の上方位置から搬出して
一サイクルを終了する。
Next, the operation of the apparatus thus configured will be described. The pressure reducing valve (18) is adjusted in advance and compressed air controlled to a predetermined pressure is supplied into the cover (8). Under this condition, the molding sand (S) is put into the casting frame (24) and the fill frame (25) on the model plate (23), and these are put on the table (3) by the roller conveyor with a collar (5). After the cylinder (2) is loaded to the position just above, it is pushed up by the table (3) by the extension operation of the cylinder (2) to bring the fill frame (25) into contact with the frame body (22) (see FIG. 1). Then, the cylinder (14) is contracted by switching the switching valve (19) to operate the valves (15) (15).
Is raised, the upward force of the compressed air acts on the lower surface of the flange (11a) of the tubular body (11), and the tubular body (11)
Valve (15) (15) while (11) is in contact with valve (15) (15)
And the lower surface of the groove (12) of the tubular body (11) (11) hits the lower surface of the stopper (26) (26), and the tubular body (11)
After the rise of (11) is stopped, only the valves (15) and (15) rise to separate the valves (15) and (15) from the tubular bodies (11) and (11). The downward force of compressed air acts on the upper surfaces of (11a) and (11a), and the cylindrical body (11) (11)
Are pushed down, which results in valves (15) (15) and cylinders (1
1) (11) will be largely separated at a higher speed, and compressed air in the cover (8) will pass through the cylinders (11) (11) and then a large amount from the outlets (6) (6). And it will be blown out at a stretch. The blown compressed air is dispersed in the air dispersion plate (21), then compresses the foundry sand (S), flows through the foundry sand (S), and is discharged from the vent hole of the model plate (23). As a result, the foundry sand (S) is pre-compressed. After the preliminary compression of the foundry sand (S) is completed, the cylinder (14) is switched by switching the switching valve (19).
To extend the valve (15) (15) to lower the cylinder (1
1) The upper end opening of (11) is closed and the seals (13) and (13) are appropriately pressed by the flanges (11a) and (11a), whereby the outside and the inside of the valve base (9) are airtight. And the blowing of compressed air from the air outlets (6) and (6) is stopped. Next, the contraction operation of the cylinder (2) lowers the table (3) and the like, and subsequently, a compression plate (not shown) is carried into the casting frame (24) immediately above the foundry sand (S). Then, the expanding operation of the cylinder (2) again raises the casting frame (24) containing the molding sand (S), and the molding sand in the molding frame (24) is compressed by the compression plate and the model plate (23). And solidify. Then, the contraction operation of the cylinder (2) lowers the table (3) and the like again to place the molding frame (24) with a built-in green mold on the roller conveyor (5) with a collar and perform die cutting. , The casting frame (24), etc. are carried out from the position above the table (3) by the roller conveyor (5) with a collar, and one cycle is completed.

なお、上記の実施例では弁(15)は、ブラケット(16)
を介してピストンロッド(14a)に直接的に装着してあ
るが、第3図に示すように間接的に装着するようにして
もよい。すなわち、ピストンロッド(14a)の下部にブ
ラケト(31)を固着し、このブラケット(31)には、段
付きロッド(32)(32)を所定距離上下動可能に貫通装
着し、各段付ロッド(32)におけるブラケット(31)の
上方部には所要の大きさの反発力を有する圧縮コイルば
ね(33)を巻装し、さらに各段付ロッド(32)の下端に
は弁(15)を固着する。
In the above embodiment, the valve (15) has the bracket (16).
Although it is directly attached to the piston rod (14a) through the, it may be attached indirectly as shown in FIG. That is, the bracket (31) is fixed to the lower part of the piston rod (14a), and the stepped rods (32) and (32) are penetratingly attached to the bracket (31) so as to be vertically movable for a predetermined distance. A compression coil spring (33) having a required repulsive force is wound around the upper part of the bracket (31) in (32), and a valve (15) is attached to the lower end of each stepped rod (32). Stick to it.

このように構成されたものは、シリンダ(14)を伸長作
動すると、弁(15)(15)がブラケット(31)、段付ッ
ロッド(32)等を介して下降されてシール(13)上のフ
ランジ(11a)に当接され、筒体(11)の上端開口部を
閉じる。他方、シリンダ(14)を収縮作動してブラケッ
ト(31)、弁(15)(15)等を上昇させると、最初第1
実施例と同様にして筒体(11)(11)は、溝(12)の下
部面がストッパ(26)(26)の下面に当たるまで弁(1
5)(15)と一緒に上昇し、続いて、弁(15)(15)が
筒体(11)(11)に当接したままブラケット(31)だけ
が上昇して圧縮コイルばね(33)(33)がさらに圧縮さ
れてその反発力が漸増される。この漸増する反発力が弁
(15)(15)の上面に作用する圧縮空気による力と、弁
(15)(15)および段付ロッド(32)(32)の自重と、
よりも大きくなると、弁(15)(15)と段付ロッド(3
2)(32)とは若干上昇したのち直ちに高速度で高く上
昇され、かつ筒体(11)(11)は第1実施例と同様にし
て圧縮空気によって押し下げられ、この結果、弁(15)
(15)と筒体(11)(11)とは第1実施例によるよりも
さらに高速度で分離されることとなる。
With this structure, when the cylinder (14) is extended, the valves (15) and (15) are lowered via the bracket (31), the step rod (32), etc. It abuts the flange (11a) and closes the upper end opening of the tubular body (11). On the other hand, when the cylinder (14) is contracted to raise the bracket (31), valves (15) (15), etc., the first first
In the same manner as in the embodiment, the cylindrical body (11) (11) has a valve (1) until the lower surface of the groove (12) hits the lower surface of the stopper (26) (26).
5) Ascends together with (15), and then only the bracket (31) ascends while the valves (15) and (15) are in contact with the tubular bodies (11) and (11) to increase the compression coil spring (33). (33) is further compressed and its repulsive force is gradually increased. This gradually increasing repulsive force acts on the upper surfaces of the valves (15) (15) by the compressed air and the weights of the valves (15) (15) and the stepped rods (32) (32).
Larger than valve (15) (15) and stepped rod (3
2) (32) is slightly raised and then immediately raised at high speed, and the cylinders (11) and (11) are pushed down by compressed air in the same manner as in the first embodiment. As a result, the valve (15)
(15) and the cylinders (11) and (11) are separated at a higher speed than in the first embodiment.

(考案の効果) 以上の説明からも明らかなように本考案によれば、弁と
筒体とは弁自体の上昇速度と筒体自体の下降速度とを合
計した速度で互いに分離されるため、従来のこの種の装
置のようにシリンダの収縮作動だけで弁を上昇させるの
に比べて、弁を高速度で高く上昇させることとなり、フ
レームの吹出口が瞬時的に大きく開かれて、カバー内の
圧縮空気を大量にして一気に鋳枠内に吹込むことができ
るなどの優れた実用的効果を奏する。
(Effect of the Invention) As is apparent from the above description, according to the present invention, the valve and the cylinder are separated from each other at the sum of the ascending speed of the valve itself and the descending speed of the cylinder itself. Compared to raising the valve only by the contraction operation of the cylinder like the conventional device of this type, the valve is raised at a high speed and high, and the outlet of the frame is instantly opened greatly, It has an excellent practical effect that a large amount of compressed air can be blown into the casting frame at a stretch.

【図面の簡単な説明】[Brief description of drawings]

第1図は本考案の第1実施例を示す一部切欠断面正面
図、第2図は第1図のA部拡大図、第3図は本考案の第
2実施例を示す一部切欠断面正面図である。 (7):フレーム (8):カバー (9):弁台 (10):貫通孔 (11):筒体 (11a):フランジ (14):シリンダ (14a):ピストンロッド (15):弁 (23):模型板 (24):鋳枠 (31):ブラケット (32):段付ロッド (33):圧縮コイルばね
1 is a partially cutaway sectional front view showing a first embodiment of the present invention, FIG. 2 is an enlarged view of an A portion of FIG. 1, and FIG. 3 is a partially cutaway sectional view showing a second embodiment of the present invention. It is a front view. (7): Frame (8): Cover (9): Valve seat (10): Through hole (11): Cylindrical body (11a): Flange (14): Cylinder (14a): Piston rod (15): Valve ( 23): Model plate (24): Casting frame (31): Bracket (32): Stepped rod (33): Compression coil spring

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】ベントホール付模型板(23)上に載置した
鋳枠(24)に鋳物砂を投入したのち、圧縮空気を前記鋳
物砂の表面に吹込み鋳物砂中を貫流させ模型板(23)か
ら排出させて鋳物砂を予備圧縮し、その後鋳物砂を圧縮
板により圧縮して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って、 前記鋳枠(24)の上端開口部を閉鎖可能でかつ鋳枠(2
4)の上端開口部に臨む圧縮空気吹出口(6)を透設し
た定盤状のフレーム(7)を設け、このフレーム(7)
上には、フレーム(7)とで圧縮空気貯蔵タンクを構成
するカバー(8)を前記吹出口(6)を内側に位置させ
て気密状に装着し、前記カバー(8)内における前記フ
レーム(7)上には、上面平坦状の蓋を一体的に設けた
筒状の弁台(9)を前記吹出口(6)を内側に位置させ
て気密状に装着し、この弁台(9)の蓋部には上下に貫
通する貫通孔(10)を透設し、この貫通孔(10)には、
上端部にフランジ(11a)を有する筒体(11)を所要距
離上下動可能に貫装し、前記弁台(9)の蓋部の上面に
おける前記貫通孔(10)の周囲には、前記筒体(11)が
下降した時の前記フランジ(11a)と前記弁台(9)の
上面との間をシールする環状のシール(13)を固着し、
前記カバー(8)上には、カバー(8)の天井壁を気密
に上下摺動可能に貫通するピストンロツド(14a)を有
するシリンダ(14)を装着し、前記ピストンロツド(14
a)の下部には、前記フランジ(11a)とほぼ同一の外寸
を有して前記筒体(11)の上端開口部を閉鎖可能な弁
(15)を装着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。
1. A model plate after the molding sand (24) placed on a model plate (23) with a vent hole is filled with molding sand, and compressed air is blown into the surface of the molding sand to flow through the molding sand. (23) A compressed air blowing device in a green molding facility for discharging the sand for preliminary compression of the sand and then compressing the sand with a compression plate to mold a green mold, The upper opening of 24) can be closed and the flask (2
A platen-like frame (7) having a compressed air outlet (6) facing the upper end opening of (4) is provided, and this frame (7)
A cover (8) that constitutes a compressed air storage tank together with a frame (7) is airtightly mounted with the outlet (6) inside and the frame (8) inside the cover (8) is attached. 7) On top of this, a cylindrical valve base (9) integrally provided with a flat upper surface is attached in an airtight manner with the outlet (6) located inside, and this valve base (9) is installed. A through hole (10) penetrating vertically is transparently provided in the lid part of this, and this through hole (10) is
A tubular body (11) having a flange (11a) at its upper end is penetrated so as to be vertically movable for a required distance, and the tubular body is provided around the through hole (10) on the upper surface of the lid portion of the valve base (9). An annular seal (13) is fixed to seal between the flange (11a) and the upper surface of the valve base (9) when the body (11) descends,
A cylinder (14) having a piston rod (14a) penetrating the ceiling wall of the cover (8) in an airtight manner so as to be vertically slidable is mounted on the cover (8).
At the lower part of (a), a valve (15) having substantially the same outer dimensions as the flange (11a) and capable of closing the upper end opening of the tubular body (11) is attached. Compressed air blowing device in molding equipment.
【請求項2】前記シリンダ(14)のピストンロツド(14
a)の下部にはブラケツト(31)を固着し、このブラケ
ツト(31)には段付ロツド(32)を所要距離上下動可能
に貫通装着し、この段付ロツド(32)の下端には前記弁
(15)を固着し、前記段付ロツド(32)における前記ブ
ラケツト(31)の上部には、所要な大きさの反発力を有
して前記弁(15)を上方へ付勢可能な圧縮コイルばね
(33)を巻装したことを特徴とする請求項1記載の生型
造型設備における圧縮空気吹込み装置。
2. A piston rod (14) of the cylinder (14).
A bracket (31) is fixed to the lower part of a), and a step rod (32) is penetratingly attached to the bracket (31) so that the step rod can move up and down by a required distance. The valve (15) is fixed, and the upper part of the bracket (31) of the step rod (32) has a repulsive force of a required magnitude and can urge the valve (15) upward. The compressed air blowing device in a green molding facility according to claim 1, wherein a coil spring (33) is wound.
JP5254290U 1990-05-18 1990-05-18 Compressed air blowing device in green molding equipment Expired - Fee Related JPH0713896Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5254290U JPH0713896Y2 (en) 1990-05-18 1990-05-18 Compressed air blowing device in green molding equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5254290U JPH0713896Y2 (en) 1990-05-18 1990-05-18 Compressed air blowing device in green molding equipment

Publications (2)

Publication Number Publication Date
JPH0412347U JPH0412347U (en) 1992-01-31
JPH0713896Y2 true JPH0713896Y2 (en) 1995-04-05

Family

ID=31572928

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5254290U Expired - Fee Related JPH0713896Y2 (en) 1990-05-18 1990-05-18 Compressed air blowing device in green molding equipment

Country Status (1)

Country Link
JP (1) JPH0713896Y2 (en)

Also Published As

Publication number Publication date
JPH0412347U (en) 1992-01-31

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