JPH04113140U - Casting flask - Google Patents
Casting flaskInfo
- Publication number
- JPH04113140U JPH04113140U JP2126491U JP2126491U JPH04113140U JP H04113140 U JPH04113140 U JP H04113140U JP 2126491 U JP2126491 U JP 2126491U JP 2126491 U JP2126491 U JP 2126491U JP H04113140 U JPH04113140 U JP H04113140U
- Authority
- JP
- Japan
- Prior art keywords
- flask
- mold
- molding
- sand
- 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
- 238000005266 casting Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000004576 sand Substances 0.000 claims description 10
- 239000003110 molding sand Substances 0.000 abstract description 17
- 238000004140 cleaning Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
Landscapes
- Casting Devices For Molds (AREA)
Abstract
(57)【要約】
【目的】 内面近傍の型締まりが良好であるとともに、
型ばらし時の内面の清掃を容易に行うことができ、かつ
維持費の低廉な鋳枠を得ること。
【構成】 鋳物砂と接する面を低摩擦係数を有する面に
形成した板材9を、本体8の内面8a全面に着脱自在に
装着し、型締まりを良好にするとともに清掃を容易し、
また交換可能にした。
(57) [Summary] [Purpose] Good mold tightness near the inner surface, and
To obtain a casting flask whose inner surface can be easily cleaned during demolding and whose maintenance cost is low. [Structure] A plate material 9 whose surface in contact with molding sand has a low coefficient of friction is removably attached to the entire inner surface 8a of the main body 8 to improve mold tightness and facilitate cleaning.
Also made it replaceable.
Description
【0001】0001
本考案は、鋳物を製造する際に用いる鋳枠に関するものである。 The present invention relates to a flask used in manufacturing castings.
【0002】0002
鋳物製造用の鋳型は、従来より図4に示すように、模型1を配設した模型定盤 2を造型機のテーブル6上に取り付け、模型定盤2上に鋳枠3を載置し、この鋳 枠3内に上方に設けた砂タンク(図示せず)内の鋳物砂4を投入した後、造型機 のスクイズヘッド5により鋳物砂4を圧縮して型締めを行い、その後模型1を抜 き取る型抜きを行って、上型、下型をそれぞれ造型している。 Conventionally, molds for manufacturing castings are made using a model surface plate on which a model 1 is arranged, as shown in Fig. 4. 2 on the table 6 of the molding machine, place the casting flask 3 on the model surface plate 2, and After pouring the molding sand 4 into the sand tank (not shown) provided above in the frame 3, the molding machine The molding sand 4 is compressed by the squeeze head 5 and the mold is clamped, and then the model 1 is pulled out. The upper and lower molds are made by cutting out the molds.
【0003】 しかして、上記のようにして造型した鋳型4aは、鋳枠3の内面3aとの摩擦 力のみによって保持されているため、前記型抜き時の吊り上げ等の際、鋳型4a の一部または全部が落下するいわゆる型落ちを起こすおそれがある。0003 Therefore, the mold 4a molded as described above has friction with the inner surface 3a of the flask 3. Since the mold 4a is held only by force, when lifting the mold 4a during mold removal, etc. There is a risk that part or all of the mold may fall off, which is called mold drop.
【0004】 このため従来は、上記型落ちの防止手段として、鋳枠3の内面3aの面粗度を 大にしたり、逆勾配を付けたりして、鋳枠3の内面3aと鋳物砂4との間の摩擦 力を高めることも行われていた。0004 For this reason, conventionally, as a means to prevent mold drop, the surface roughness of the inner surface 3a of the flask 3 has been The friction between the inner surface 3a of the flask 3 and the molding sand 4 is It was also used to increase power.
【0005】[0005]
しかしながら、鋳枠3の内面3aの面粗度を大にして鋳物砂4との間の摩擦力 を大にすると、造型時の型締まりが悪くなるという問題がある。すなわち、鋳枠 3の中央部およびの周辺は、スクイズヘッド5による加圧によって鋳物砂4相互 間の流動が円滑に行われて型締まりが比較的良好であるが、鋳枠3の内面3a近 傍は、内面3aの摩擦係数が大であるため鋳物砂4の流動が不円滑になるからで ある。 However, by increasing the surface roughness of the inner surface 3a of the flask 3, the frictional force between it and the molding sand 4 is reduced. If the value is increased, there is a problem that the mold tightening during molding becomes poor. In other words, the flask The center and periphery of the molding sand 4 are pressed together by the squeeze head 5. Although the flow between the flasks 3 and 3a is smooth and the mold clamping is relatively good, This is because the flow of the molding sand 4 becomes unsmooth due to the large friction coefficient of the inner surface 3a. be.
【0006】 この対策としてスクイズヘッド5を複数個に分割し、鋳枠3の内面3a近傍に 、より大なる加圧力を付加するようにしたマルチスクイズヘッド型造型機が開発 され(例えば実公昭52−18969号公報参照)、近時使用されるようにはな ったが、鋳枠3の内面3aの摩擦係数が大なる場合には効果が少なく、依然とし てこの部分の型締まりが不十分であるという問題がある。[0006] As a countermeasure against this, the squeeze head 5 is divided into a plurality of parts and placed near the inner surface 3a of the flask 3. Developed a multi-squeeze head molding machine that applies even greater pressure. (for example, see Utility Model Publication No. 18969/1983), and has not been used recently. However, when the friction coefficient of the inner surface 3a of the flask 3 is large, the effect is small and still remains. There is a problem that the mold tightening of the lever part is insufficient.
【0007】 また、型抜き後のキャビティに注入した溶湯が凝固した後は、いわゆる型ばら しを行って鋳枠3内の鋳型4aを除去するが、鋳枠3の内面3aの面粗度が大で あったり、内面3aに錆が発生したりして摩擦係数が大であると内面3aに鋳物 砂4が付着する。このような場合は、鋳枠3に振動を与えたり、ブラシ等により 清掃作業を行うが、鋳物砂4には粘結剤を含有するため、鋳枠3の内面3aに凝 着しこれを除去するのは困難であることが多い。[0007] In addition, after the molten metal injected into the mold cavity solidifies, the so-called mold release occurs. The mold 4a in the flask 3 is removed by cleaning, but the surface roughness of the inner surface 3a of the flask 3 is large. If the coefficient of friction is large due to rust or rust on the inner surface 3a, the inner surface 3a may be made of cast metal. Sand 4 is attached. In such a case, do not apply vibration to the flask 3 or use a brush, etc. Although the cleaning work is carried out, since the foundry sand 4 contains a binder, condensation may occur on the inner surface 3a of the flask 3. It is often difficult to remove.
【0008】 このため、内面3aの清掃が不十分なまま再び造型作業を行うと、内面3aに 鋳物砂4の堆積が増加し、その結果摩擦係数が益々増大して型締まりがさらに悪 化し、型張りの発生、寸法精度の低下等をきたすという問題点がある。[0008] For this reason, if the molding work is performed again without cleaning the inner surface 3a sufficiently, the inner surface 3a will be damaged. The accumulation of molding sand 4 increases, and as a result, the coefficient of friction increases, making mold tightness even worse. There are problems in that it causes mold tension, a decrease in dimensional accuracy, etc.
【0009】 本考案は、上記従来の問題点を解消し、造型時の型締まりが良好であるととも に、型ばらし時における鋳枠内面への鋳物砂の付着が少なく、また清掃作業も容 易に行うことができる鋳枠を提供することを目的とするものである。[0009] This invention solves the above-mentioned conventional problems and improves mold clamping during molding. In addition, there is less molding sand adhering to the inner surface of the flask when the mold is disassembled, and cleaning work is also easier. The purpose is to provide a casting flask that can be easily cast.
【0010】0010
上記目的を達成するため、本考案の鋳枠は、少なくとも鋳物砂と接する面を低 摩擦係数を有する面に形成した板材を、鋳枠本体の内面全周に着脱自在に装着し たことを特徴とするものである。 In order to achieve the above object, the casting flask of the present invention has at least a surface that is in contact with molding sand. A plate material formed on a surface with a friction coefficient is removably attached to the entire inner circumference of the flask body. It is characterized by:
【0011】[0011]
本体の内面に、少なくとも鋳物砂側を低摩擦係数を有する面に形成した板材を 装着したので、造型時における鋳物砂の鋳枠内面での流動抵抗が減少して型締ま りを向上させ得る。また型ばらし時の鋳物砂の剥離性も向上して清掃が容易とな り、余剰の鋳物砂の付着を防止し得る。さらに、使用により板材の摩擦抵抗が大 となったときは、鋳枠から取り外して新しい板材と交換することにより上記の効 果を持続することができるので、鋳枠全体を新品にする必要がなく、管理費が低 廉である。 The inner surface of the main body is made of a plate material with at least the casting sand side formed with a surface having a low coefficient of friction. Since it is installed, the flow resistance of molding sand on the inner surface of the flask during molding is reduced and the mold is tightened. can improve performance. In addition, the peelability of molding sand during mold disassembly is improved, making cleaning easier. This can prevent excess molding sand from adhering. Furthermore, the frictional resistance of the plate material increases with use. When this occurs, remove the flask and replace it with a new plate to achieve the above effect. Since the fruit can last for a long time, there is no need to replace the entire casting flask with a new one, and management costs are low. It is inexpensive.
【0012】 また、本考案の鋳枠内面の摩擦係数の低下により、前記型抜き時の吊り上げの 際の鋳型の一部または全部が落下する型落ちは、本考案の鋳枠による造型では鋳 型全体、特に鋳枠周辺の型締まりが向上するので発生しない。0012 In addition, due to the reduction in the friction coefficient of the inner surface of the casting flask of the present invention, it is easier to lift the mold when removing the mold. Mold drop, in which part or all of the mold falls during molding, can be avoided when molding using the flask of the present invention. This does not occur because the mold tightening is improved throughout the mold, especially around the flask.
【0013】[0013]
以下、図1〜3により本考案の実施例を説明する。 図1は本考案の一実施例を示す鋳枠の断面図、図2は本考案の鋳枠を使用して 造型したときの鋳型強度を示す要部平面図、図3は従来の鋳枠を使用して造型し たときの鋳型強度を示す要部平面図である。 Embodiments of the present invention will be described below with reference to FIGS. 1 to 3. Figure 1 is a sectional view of a flask showing an embodiment of the present invention, and Figure 2 is a sectional view of a flask showing an embodiment of the present invention. Figure 3 is a plan view of the main parts showing the strength of the mold when molding is performed using a conventional casting flask. FIG.
【0014】 図1において、本考案の鋳枠7は、従来の鋳枠と同様に製作した鋳鉄製の本体 8の内面8aに、厚さ5mmの鉄板の両面に無電解ニッケルメッキを施した板材( ライナー)9をねじ(図示せず)等の装着手段により取り付けたものである。 上記無電解ニッケルメッキの摩擦係数はμ=0.1〜0.2で、普通のメッキ のない鋳枠の摩擦係数μ=0.4〜0.5に比して低い。勿論鋳鉄よりも低い。 従って、造型時における鋳物砂は鋳枠7の内面での流動抵抗が低く、型締まり を向上することができた。[0014] In FIG. 1, the casting flask 7 of the present invention has a cast iron body manufactured in the same manner as a conventional casting flask. The inner surface 8a of 8 is made of a 5 mm thick iron plate with electroless nickel plating on both sides ( The liner) 9 is attached using attachment means such as screws (not shown). The friction coefficient of the above electroless nickel plating is μ = 0.1 to 0.2, which is similar to that of ordinary plating. This is lower than the friction coefficient μ of 0.4 to 0.5 for a flask without. Of course it is lower than cast iron. Therefore, during molding, the molding sand has low flow resistance on the inner surface of the flask 7, and the mold tightens. was able to improve.
【0015】 型ばらしの際は、鋳枠7の鋳物砂に接する内面9aが極めて平滑なため、鋳物 砂がよく落ち、清掃が極めて楽にできた。 また、鋳物砂が内面9aに固く付着した場合でも、ブラシ等により容易に除去 することができた。[0015] When demolding, the inner surface 9a of the flask 7, which is in contact with the molding sand, is extremely smooth. The sand was removed well and cleaning was extremely easy. In addition, even if molding sand sticks firmly to the inner surface 9a, it can be easily removed with a brush, etc. We were able to.
【0016】 使用により内面9aが摩耗したりして摩擦係数が上昇し、型締まりや砂落ちが 悪くなったときは、板材9を裏返して取り付けることにより前記効果を復活する ことができ、両面とも悪くなったときは、新しい板材9と交換することにより前 記効果を復活することができる。 勿論、鋳物砂に接する内面9aのみを低摩擦係数を有する面にし、適宜交換を 繰り返してもよい。 このように交換可能であるから、従来のように鋳枠全体を新品にする必要がな い。[0016] Due to use, the inner surface 9a may wear out and the coefficient of friction may increase, resulting in mold tightening and sand falling. If the problem worsens, the above effect can be restored by turning the board 9 over and attaching it. If both sides have deteriorated, replace it with a new board 9. The effect can be restored. Of course, only the inner surface 9a in contact with the foundry sand should be made a surface with a low friction coefficient, and replaced as appropriate. May be repeated. Since it is replaceable in this way, there is no need to replace the entire flask with a new one as in the past. stomach.
【0017】 次に、上記鋳枠7と従来の鋳枠3(鋳枠内寸法はともに700×900×38 0Hである)とを用い、一辺100mm、高さ150mmの角柱状の模型1を、模型 定盤2上に各模型1の間隔と、鋳枠7の内面8aからの距離とがそれぞれ55mm になるように配設したものにより、水分3.5%の鋳物砂によってそれぞれ造型 を行い、鋳枠7の角部近傍の鋳型強度(N/cm2 )を測定した。Next, using the flask 7 and the conventional flask 3 (both flask internal dimensions are 700 x 900 x 380H), a prismatic model 1 with a side of 100 mm and a height of 150 mm is made. Each model 1 was placed on a model surface plate 2 so that the distance between each model 1 and the distance from the inner surface 8a of the casting flask 7 was 55 mm, and molding was performed using molding sand with a moisture content of 3.5%. The mold strength (N/cm 2 ) near the corner of the flask 7 was measured.
【0018】 その結果を図2および図3中の各部位に記入して示した。図2からわかるよう に、本考案の鋳枠7を用いて造型した鋳型の鋳型強度は各部位とも従来の鋳枠3 を用いたものに比して全般的に高く、鋳枠7の内面9a近傍も十分な型締まりが なされている。[0018] The results are shown in each region in FIGS. 2 and 3. As can be seen from Figure 2 The mold strength of the mold made using the flask 7 of the present invention is higher than that of the conventional flask 3 in each part. It is generally higher than that using molds, and there is sufficient mold tightness near the inner surface 9a of the flask 7. being done.
【0019】[0019]
上述のように本考案によると、造型時の型締まりが良好であるとともに、型ば らし時における鋳枠内面への砂の付着が少なく、また清掃作業も容易に行なうこ とができる。 さらに、上記の効果が低下した場合は、装着した板材を交換するだけで鋳枠全 体を新調する必要がなく、鋳枠の製作や維持管理に要する経費を大幅に節減でき るものである。 As mentioned above, according to the present invention, the mold clamping during molding is good, and the mold Less sand adheres to the inner surface of the flask during drying, and cleaning work is also easy. I can do that. Furthermore, if the above effects deteriorate, simply replacing the installed plate material will completely remove the entire casting flask. There is no need to renew the body, and the cost required for manufacturing and maintenance of casting flasks can be significantly reduced. It is something that
【図1】本考案の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図2】本考案の鋳枠を使用して造型したときの鋳型強
度を示す要部平面図である。FIG. 2 is a plan view of essential parts showing mold strength when molding is performed using the flask of the present invention.
【図3】従来の鋳枠を使用して造型したときの鋳型強度
を示す要部平面図である。FIG. 3 is a plan view of essential parts showing mold strength when molding is performed using a conventional flask.
【図4】従来の造型方法の一例を示す断面図である。FIG. 4 is a sectional view showing an example of a conventional molding method.
1 模型 2 模型定盤 3 鋳枠 3a 内面 4 鋳物砂 7 鋳枠 8 鋳枠本体 8a 内面 9 板材 9a 内面 1 model 2 Model surface plate 3 Casting flask 3a Inner surface 4 Foundry sand 7 Casting flask 8 Casting flask body 8a Inner surface 9 Board material 9a Inner surface
───────────────────────────────────────────────────── フロントページの続き (72)考案者 内田 繁 埼玉県熊谷市三ケ尻5200番地 日立金属株 式会社設備開発研究所内 ──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Shigeru Uchida Hitachi Metals Co., Ltd. 5200 Mikajiri, Kumagaya City, Saitama Prefecture Inside Shikisha Equipment Development Research Institute
Claims (1)
接する面を低摩擦係数を有する面に形成した板材を、鋳
枠本体の内面全周に着脱自在に装着したことを特徴とす
る鋳枠。1. A casting flask, characterized in that a plate material in which at least the surface in contact with foundry sand is formed to have a low coefficient of friction is removably attached to the entire inner circumference of the flask body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2126491U JPH04113140U (en) | 1991-03-12 | 1991-03-12 | Casting flask |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2126491U JPH04113140U (en) | 1991-03-12 | 1991-03-12 | Casting flask |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04113140U true JPH04113140U (en) | 1992-10-02 |
Family
ID=31907053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2126491U Pending JPH04113140U (en) | 1991-03-12 | 1991-03-12 | Casting flask |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04113140U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015150587A (en) * | 2014-02-14 | 2015-08-24 | 新東工業株式会社 | Metal frame for greensand type facility |
JP2021112772A (en) * | 2017-05-26 | 2021-08-05 | メタルエンジニアリング株式会社 | Flaskless molding flask |
-
1991
- 1991-03-12 JP JP2126491U patent/JPH04113140U/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015150587A (en) * | 2014-02-14 | 2015-08-24 | 新東工業株式会社 | Metal frame for greensand type facility |
JP2021112772A (en) * | 2017-05-26 | 2021-08-05 | メタルエンジニアリング株式会社 | Flaskless molding flask |
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