JPH0356140B2 - - Google Patents
Info
- Publication number
- JPH0356140B2 JPH0356140B2 JP1109818A JP10981889A JPH0356140B2 JP H0356140 B2 JPH0356140 B2 JP H0356140B2 JP 1109818 A JP1109818 A JP 1109818A JP 10981889 A JP10981889 A JP 10981889A JP H0356140 B2 JPH0356140 B2 JP H0356140B2
- Authority
- JP
- Japan
- Prior art keywords
- joint frame
- plate
- blow
- blow head
- frame
- 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 - Lifetime
Links
- 238000005266 casting Methods 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 3
- 239000003110 molding sand Substances 0.000 description 12
- 239000004576 sand Substances 0.000 description 9
- 238000007599 discharging Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Casting Devices For Molds (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、鋳型造型装置の改良に関するもので
あり、詳しくは、鋳型硬度をほぼ均一にできる鋳
型造型装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an improvement in a mold making device, and more particularly, to a mold making device that can make mold hardness substantially uniform.
（従来の技術）
従来の鋳型造型装置として、第６図に示す様な
ものがある（例えば、「新版鋳造法」（昭和63、
３、31）社団法人鋳造技術普及協会、P.28〜30）。
このものは、固定されたブローヘツド２１と、上
向きのスクイズシリンダ２３に接続した模型定盤
２２と、継ぎ枠２６に接続した下向きの継ぎ枠用
シリンダ２４とを具備し、ブローヘツド２１には
ブロープレート２５が取付けられると共に、模型
定盤２２には継ぎ枠２６および鋳枠２７が載置さ
れている。(Prior art) As a conventional mold making device, there is one as shown in Fig. 6 (for example, the "new version casting method" (Showa 63,
3, 31) Foundry Technology Promotion Association, P.28-30).
This device is equipped with a fixed blow head 21, a model surface plate 22 connected to an upward squeeze cylinder 23, and a downward joint frame cylinder 24 connected to a joint frame 26. is attached, and a joint frame 26 and a casting flask 27 are placed on the model surface plate 22.
（発明が解決しようとする課題）
下降した継ぎ枠用シリンダ２４と上昇した模型
定盤２２とによつて継ぎ枠２６および鋳枠２７を
圧着した後、ブローヘツド２１に２〜３Kg／mm2の
圧縮エアを供給すると、鋳物砂２８はブロープレ
ート２５から圧縮エアと共に、継ぎ枠２６および
鋳枠２７内に吹込まれる。次に、継ぎ枠用シリン
ダ２４の油圧を解除し、スクイズシリンダ２３を
さらに上昇させてブローヘツド２１に対してスク
イズを行ない、鋳型硬度の均一化を図つている
が、吹込まれた鋳物砂２８中から圧縮エアを十分
に抜気できないため砂密度が均一にならず、搬送
工程又は時間経過による鋳型変形や鋳込圧力によ
るハリが発生していた。そこで、本発明はかかる
問題点を解消するためになされたもので、鋳物砂
中の圧縮エアを速やかに抜気して容易に鋳物砂全
体を所要の硬度にできる鋳型造型装置を提供する
ものである。(Problem to be Solved by the Invention) After the joint frame 26 and the flask 27 are crimped by the lowered joint frame cylinder 24 and the raised model surface plate 22, the blow head 21 is compressed to 2 to 3 kg/mm 2 . When air is supplied, the molding sand 28 is blown from the blow plate 25 into the joint frame 26 and the casting flask 27 together with compressed air. Next, the hydraulic pressure of the joint frame cylinder 24 is released, and the squeeze cylinder 23 is further raised to squeeze the blow head 21 in order to equalize the hardness of the mold. Because the compressed air could not be sufficiently vented, the sand density was not uniform, resulting in mold deformation due to the conveyance process or the passage of time, and firmness due to casting pressure. Therefore, the present invention has been made to solve this problem, and provides a mold making device that can quickly remove the compressed air from the foundry sand and easily make the entire foundry sand to the required hardness. be.
（課題を解決するための手段）
本発明は、ブロープレートの外周に矩形状の枠
体を設けると共に、継ぎ枠に排気孔を設け、さら
にブローヘツドと該継ぎ枠との間に垂直方向の排
気孔を透設した昇降自在な分割押圧板を設けた鋳
型造型装置である。(Means for Solving the Problems) The present invention provides a rectangular frame on the outer periphery of the blow plate, provides an exhaust hole in the joint frame, and further provides a vertical exhaust hole between the blow head and the joint frame. This is a mold making device equipped with a split press plate that can be raised and lowered with transparent parts.
（作用）
継ぎ枠および鋳枠内に鋳物砂を吹込むと、鋳物
砂は矩形状の枠体と模型との〓間を移動して継ぎ
枠および鋳枠の隅々まで充填され、圧縮エアは鋳
枠、継ぎ枠および分割押圧板の垂直方向の排気孔
を順に貫流して大気中に排出されると共に、継ぎ
枠の排気孔から大気中に排出される。その後、分
割押圧板を順次下降させ、次いで順次上昇させる
スクイズを数回繰り返しながら分割押圧板をブロ
ープレート面まで下降させると、継ぎ枠および鋳
枠近傍の鋳物砂が高密度状態に充填される。(Function) When molding sand is blown into the joint frame and casting flask, the sand moves between the rectangular frame and the model, filling every corner of the joint frame and casting flask, and the compressed air It sequentially flows through the vertical exhaust holes of the casting flask, joint frame, and split pressure plate and is discharged into the atmosphere, and is also discharged into the atmosphere through the exhaust hole of the joint frame. Thereafter, when the divided pressing plate is lowered to the blow plate surface while repeating the squeeze process several times in which the divided pressing plate is sequentially lowered and then raised sequentially, the molding sand in the joint frame and the vicinity of the flask is filled in a high density state.
（実施例）
本発明の一実施例を第１〜４図に基づいて説明
する。第１〜３図に本発明に係る鋳型造型装置が
示され、固設されたブローヘツド１の上部には、
内部に鋳物砂（図示せず）を充満するためのサン
ドゲート２が取付けられると共に、ブローヘツド
１に圧縮エアを給排するための圧縮エア供給口３
および圧縮エア排出口４が設けられ、該下部には
ブローホール５を透設したブロープレート６およ
び矩形状の枠体７が設けられ、該枠体７はブロー
プレート６の外周に配設されている。(Example) An example of the present invention will be described based on FIGS. 1 to 4. A mold making apparatus according to the present invention is shown in FIGS.
A sand gate 2 for filling the inside with molding sand (not shown) is installed, and a compressed air supply port 3 for supplying and discharging compressed air to the blow head 1.
A blow plate 6 with a blow hole 5 therethrough and a rectangular frame body 7 are provided at the lower part thereof, and the frame body 7 is disposed around the outer periphery of the blow plate 6. There is.
ブローヘツド１の下方には昇降自在なスクイズ
シリンダ８が設けられ、スクイズシリンダ８には
模型定盤９が接続され、模型定盤９に継ぎ枠１０
および鋳枠１１が載置されている。 A squeeze cylinder 8 that can be raised and lowered is provided below the blow head 1. A model surface plate 9 is connected to the squeeze cylinder 8, and a joint frame 10 is connected to the model surface plate 9.
and a flask 11 are placed thereon.
ブローヘツド１の側方には４個の下向きの継ぎ
枠用シリンダ１２が周設され、該シリンダ１２は
継ぎ枠１０の上面四隅に接続し、下降した該シリ
ンダ１２と上昇した模型定盤９とによつて継ぎ枠
１０および鋳枠１１を圧着するように形成してい
る。ブローヘツド１と継ぎ枠１０との間〓下部に
は分割押圧板１３ａ，１３ｂが介設され、他方該
間〓上部には圧縮エアを大気中に排出するための
矩形状通路１４が形成されている。該分割押圧板
は該間〓下部の四隅に配設された第１分割押圧板
１３ａと該押圧板１３ａ間に配設された第２分割
押圧板１３ｂとからなり、第１〜２分割押圧板１
３ａ，１３ｂには垂直方向の排気孔１５ａ，１５
ｂが透設されると共に、下向きの第１〜２押圧板
用シリンダ１６ａ，１６ｂが適数個接続され、該
シリンダ１６ａ，１６ｂはブローヘツド１に隣接
して周設されている。 Four downward-facing joint frame cylinders 12 are installed around the sides of the blow head 1, and the cylinders 12 are connected to the four corners of the top surface of the joint frame 10, and the cylinders 12 are connected to the lowered cylinders 12 and the raised model surface plate 9. Therefore, the joint frame 10 and the casting flask 11 are formed so as to be crimped together. Between the blow head 1 and the joint frame 10, split pressure plates 13a and 13b are interposed in the lower part, and between them, in the upper part, a rectangular passage 14 is formed for discharging compressed air into the atmosphere. . The divided pressing plate is composed of a first divided pressing plate 13a disposed at the four corners of the lower part and a second divided pressing plate 13b disposed between the pressing plates 13a, and the first to second divided pressing plates 1
3a, 13b have vertical exhaust holes 15a, 15.
b is transparently installed, and an appropriate number of downwardly directed first and second press plate cylinders 16a and 16b are connected, and the cylinders 16a and 16b are disposed adjacent to and surrounding the blow head 1.
継ぎ枠１０は中空の金枠から形成され、継ぎ枠
１０の所定部位に圧縮エアを大気中に排出するた
めの排気孔１８が穿設されている。 The joint frame 10 is formed from a hollow metal frame, and an exhaust hole 18 for discharging compressed air into the atmosphere is bored at a predetermined portion of the joint frame 10.
次に作動について述べる。 Next, we will discuss the operation.
第１図に示すように継ぎ枠用シリンダ１２を下
方向に伸長作動すると共に、スクイズシリンダ８
を上方向に伸長作動して継ぎ枠１０および鋳枠１
１を圧着させる。次いで、第１〜２押圧板用シリ
ンダ１６ａ，１６ｂを上方向に収縮作動して第１
〜２分割押圧板１３ａ，１３ｂを上昇させた後、
圧縮エア供給口３より圧縮エアをブローヘツド１
内に供給すると、圧縮エアと共にブローヘツド１
内の鋳物砂（図示せず）がブロープレート６から
継ぎ枠１０および鋳枠１１内に吹込まれる。該鋳
物砂（図示せず）は矩形状の枠体７と模型１７と
の〓間を模型１７に沿つて移動し継ぎ枠１０およ
び鋳枠１１の隅々まで充填され、圧縮エアは鋳枠
１１、継ぎ枠１０、第１〜２押圧板１３ａ，１３
ｂの垂直方向の排気孔１５ａ，１５ｂおよび矩形
状通路１４を順に貫流して大気中に排出されると
共に、継ぎ枠１０の排気孔１８から大気中に排出
される。 As shown in FIG. 1, the joint frame cylinder 12 is extended downward, and the squeeze cylinder 8
is actuated to extend upward to open the joint frame 10 and the casting flask 1.
1 is crimped. Next, the cylinders 16a and 16b for the first and second press plates are contracted upward to press the first and second press plate cylinders 16a and 16b.
~ After raising the two-part press plates 13a and 13b,
Blow head 1 with compressed air from compressed air supply port 3
When supplied into the blow head 1 with compressed air
The molding sand (not shown) inside is blown from the blow plate 6 into the joint frame 10 and the casting flask 11. The molding sand (not shown) moves along the model 17 between the rectangular frame 7 and the model 17, filling every corner of the joint frame 10 and the casting flask 11, and the compressed air flows into the casting flask 11. , joint frame 10, first to second press plates 13a, 13
It sequentially flows through the vertical exhaust holes 15a, 15b and the rectangular passage 14 and is discharged into the atmosphere, and is also discharged into the atmosphere through the exhaust hole 18 of the joint frame 10.
その後、第１〜２押圧板用シリンダ１６ａ，１
６ｂの下方への伸長作動、次いで上方への収縮作
動を行なうと、第１分割押圧板１３ａの下降、第
２分割押圧板１３ｂの下降、第１分割押圧板１３
ａの上昇および第２分割押圧板１３ｂの上昇とい
う一連のスクイズが順次行なわれ、該スクイズを
数回繰り返しながら第１〜２分割押圧板１３ａ，
１３ｂをブローヘツド６面まで下降させると、継
ぎ枠１０および鋳枠１１近傍の鋳物砂（図示せ
ず）が高密度状態に充填される。しかる後、継ぎ
枠用シリンダ１２の油圧を解除すると共に、スク
イズシリンダ８を上方に伸長作動して継ぎ枠１０
および鋳枠１１内に充填された鋳物砂（図示せ
ず）を押圧すると、該鋳物砂（図示せず）全体が
さらに高密度状態になり、もつて鋳物砂（図示せ
ず）全体が所要の硬度となる。 After that, the first and second pressure plate cylinders 16a, 1
6b is extended downward and then contracted upward, the first divided pressing plate 13a is lowered, the second divided pressing plate 13b is lowered, and the first divided pressing plate 13 is lowered.
A series of squeezes are performed in sequence, such as raising the pressure plate a and raising the second divided pressure plate 13b, and while repeating the squeeze several times, the first to second divided pressure plates 13a,
When the molding sand 13b is lowered to the blowhead 6 surface, molding sand (not shown) near the joint frame 10 and casting flask 11 is filled in a high density state. Thereafter, the hydraulic pressure of the joint frame cylinder 12 is released, and the squeeze cylinder 8 is operated to extend upward to remove the joint frame 10.
When the foundry sand (not shown) filled in the flask 11 is pressed, the entire foundry sand (not shown) becomes even more dense, and the entire foundry sand (not shown) reaches the required level. It becomes hardness.
鋳物砂（図示せず）の硬化後、スクイズシリン
ダ８を下方向に収縮作動して模型定盤９を下降さ
せ継ぎ枠１０の抜型を行ない、次いで造型された
鋳枠１１を模型定盤９から取り出すと、第４図に
示す様な鋳型が得られる。しかる後、空の別の鋳
枠１１を模型定盤９に載置し、サンドゲート２か
らブローヘツド１内に鋳物砂（図示せず）を充満
する。 After the molding sand (not shown) has hardened, the squeeze cylinder 8 is contracted downward to lower the model surface plate 9 to remove the joint frame 10, and then the molded flask 11 is removed from the model surface plate 9. When taken out, a mold as shown in FIG. 4 is obtained. Thereafter, another empty casting flask 11 is placed on the model surface plate 9, and the blow head 1 is filled with molding sand (not shown) through the sand gate 2.
第５図に他の分割押圧板が示され、第１分割押
圧板１９ａは下面にＬ字状突出部２０を有するＬ
形部材から形成されると共に、第２分割押圧板１
９ｂは前記第２分割押圧板１３ｂと同様に形成さ
れ、該分割押圧板は前記分割押圧板と同様の作用
を奏する。 FIG. 5 shows another divided pressing plate, in which the first divided pressing plate 19a has an L-shaped protrusion 20 on the lower surface.
The second divided pressing plate 1 is formed from a shaped member.
9b is formed in the same manner as the second divided pressing plate 13b, and this divided pressing plate has the same function as the divided pressing plate.
（発明の効果）
本発明によれば、ブロープレートの外周に矩形
状の枠体を設けると共に、継ぎ枠に排気孔を設
け、さらにブローヘツドと該継ぎ枠との間に垂直
方向の排気孔を透設した昇降自在な分割押圧板を
設けたから、模型の形状が複雑な場合でも、鋳物
砂の充填が鋳枠全体に渡つて均一に行われ、所要
の硬度を有する鋳型を容易かつ確実に造型でき
る。又、造型に際して大きなエネルギーを必要と
せず、騒音、振動を低減でき、造型作業の容易
化、迅速化が図れる。(Effects of the Invention) According to the present invention, a rectangular frame is provided on the outer periphery of the blow plate, an exhaust hole is provided in the joint frame, and a vertical exhaust hole is provided between the blow head and the joint frame. Even if the shape of the model is complex, even if the shape of the model is complex, the molding sand can be filled uniformly over the entire flask, making it possible to easily and reliably create molds with the required hardness. . Moreover, no large amount of energy is required during molding, noise and vibration can be reduced, and molding work can be facilitated and speeded up.
第１図は本発明の一実施例を示す一部破断正面
図、第２図は分割押圧板の下面図、第３図は同要
部断面図、第４図は造型された鋳型を示す断面
図、第５図は他の分割押圧板の下面図、第６図は
鋳物砂吹込み状態を示す従来の鋳型造型装置の一
部破断正面図である。
１……ブローヘツド、６……ブロープレート、
７……枠体、１０……継ぎ枠、１３ａ，１９ａ…
…第１分割押圧板、１３ｂ，１９ｂ……第２分割
押圧板、１５ａ，１５ｂ，１８……排気孔、２０
……Ｌ字状突出部。
Fig. 1 is a partially cutaway front view showing an embodiment of the present invention, Fig. 2 is a bottom view of the divided pressing plate, Fig. 3 is a sectional view of the same essential part, and Fig. 4 is a cross section showing a mold that has been molded. 5 is a bottom view of another divided pressing plate, and FIG. 6 is a partially cutaway front view of a conventional mold making apparatus showing a state in which molding sand is injected. 1...Blow head, 6...Blow plate,
7... Frame body, 10... Joint frame, 13a, 19a...
...First divided pressure plate, 13b, 19b...Second divided pressure plate, 15a, 15b, 18...Exhaust hole, 20
...L-shaped protrusion.
Claims (1)
ブロープレートを取付けたブローヘツドを固設す
ると共に、該ブローヘツドの側方に昇降自在な継
ぎ枠を周設した鋳型造型装置において、該ブロー
プレートの外周に矩形状の枠体を設けると共に、
該継ぎ枠に排気孔を設け、さらに該ブローヘツド
と該継ぎ枠との間に垂直方向の排気孔を透設した
昇降自在な分割押圧板を設けたことを特徴とする
鋳型造型装置。 ２ 分割押圧板は、ブローヘツドと継ぎ枠との間
〓の四隅部および該四隅部間に配設される請求項
１記載の鋳型造型装置。 ３ ブローヘツドと継ぎ枠との間〓の四隅部に配
設された分割押圧板は、Ｌ字状突出部を有するＬ
形部材から形成される請求項２記載の鋳型造型装
置。[Scope of Claims] 1. A mold in which a blow head with a blow plate attached is fixed above a movable model surface plate on which a casting flask is placed, and a joint frame that can be raised and lowered is provided around the side of the blow head. In the molding device, a rectangular frame is provided around the outer periphery of the blow plate, and
A mold making apparatus characterized in that the joint frame is provided with an exhaust hole, and a vertically extending vertical exhaust hole is provided between the blow head and the joint frame, and a vertically movable dividing press plate is provided. 2. The mold making apparatus according to claim 1, wherein the divided pressing plates are arranged at four corners between the blow head and the joint frame and between the four corners. 3. The divided pressing plates arranged at the four corners between the blow head and the joint frame are L-shaped with an L-shaped protrusion.
3. The mold making apparatus according to claim 2, wherein the mold making apparatus is formed from a shaped member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1109818A JPH02290648A (en) | 1989-04-28 | 1989-04-28 | Molding apparatus for mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1109818A JPH02290648A (en) | 1989-04-28 | 1989-04-28 | Molding apparatus for mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02290648A JPH02290648A (en) | 1990-11-30 |
| JPH0356140B2 true JPH0356140B2 (en) | 1991-08-27 |
Family
ID=14519988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1109818A Granted JPH02290648A (en) | 1989-04-28 | 1989-04-28 | Molding apparatus for mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02290648A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE509715T1 (en) * | 1999-11-04 | 2011-06-15 | Sintokogio Ltd | MOLDING APPARATUS AND METHOD FOR SAND MOLDS |
-
1989
- 1989-04-28 JP JP1109818A patent/JPH02290648A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02290648A (en) | 1990-11-30 |
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