JP2763051B2 - Mold casting method - Google Patents
Mold casting methodInfo
- Publication number
- JP2763051B2 JP2763051B2 JP19634793A JP19634793A JP2763051B2 JP 2763051 B2 JP2763051 B2 JP 2763051B2 JP 19634793 A JP19634793 A JP 19634793A JP 19634793 A JP19634793 A JP 19634793A JP 2763051 B2 JP2763051 B2 JP 2763051B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- core
- cast
- casting method
- runner
- 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
Links
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、崩壊性の中子を用いた
金型鋳造法の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a mold casting method using a collapsible core.
【０００２】[0002]
【従来の技術】従来、一般に固定型と可動型のように２
分割された金型によって鋳造する場合、鋳造出来る製品
数は、金型分割面の面積から方案部の面積を除いた残り
の面積にレイアウト出来る個数に限定される。また、１
回の鋳造で同時に多数の製品を鋳造し生産性を高めるよ
うにした技術として、例えば特開平１―９１９５０号の
ような鋳造用マシンが提案されている。このマシンでは
固定盤と可動盤の間に中間可動盤を配設し、この中間可
動盤の両面に夫々の中間金型を取付けるとともに、一方
側の中間金型と固定盤に取付けた固定金型との間、及び
他方側の中間金型と可動盤に取付けた可動金型との間に
夫々別個のキャビティを形成することで、キャビティ面
積を増やすことなく鋳造個数を２倍に増やすようにして
いる。2. Description of the Related Art Conventionally, two types such as a fixed type and a movable type are generally used.
When casting is performed using the divided molds, the number of products that can be cast is limited to the number that can be laid out in the remaining area excluding the area of the mold division surface from the area of the mold division surface. Also, 1
As a technique for increasing the productivity by simultaneously casting a large number of products in a single casting, for example, a casting machine as disclosed in JP-A-1-91950 has been proposed. In this machine, an intermediate movable plate is arranged between the fixed platen and the movable platen. Each intermediate die is attached to both sides of this intermediate movable platen, and the fixed die attached to the intermediate die on one side and the fixed platen. , And between the intermediate mold on the other side and the movable mold attached to the movable plate, respectively, so that the number of castings is doubled without increasing the cavity area. I have.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記マ
シンの場合は固定盤と可動盤の間に中間可動盤を配設す
る必要があり、固定盤と可動盤からなる一般的な鋳造マ
シンの形態に較べて装置が大型化し、複雑化するという
問題があった。However, in the case of the above-mentioned machine, it is necessary to arrange an intermediate movable plate between the fixed plate and the movable plate, and a general casting machine comprising a fixed plate and a movable plate is required. There is a problem that the apparatus becomes larger and more complicated.
【０００４】[0004]
【課題を解決するための手段】かかる課題を解決するた
め、本発明は固定金型と可動金型の間に崩壊性の中子を
挟み込み、この中子によって固定金型側のキャビティと
可動金型側のキャビティを分離させて別個独立のキャビ
ティを形成し鋳造するようにした。また、前記中子に鋳
抜き形状部を設けるようにした。また、前記中子に方案
部の一部を形成するようにした。According to the present invention, a collapsible core is sandwiched between a fixed mold and a movable mold, and the cavity on the fixed mold side and the movable mold are sandwiched by the core. The cavity on the mold side was separated to form a separate and independent cavity for casting. Further, the core has a cast-out portion. Further, a part of the plan part is formed in the core.
【０００５】[0005]
【作用】固定金型と可動金型の間に挟み込んだ崩壊性の
中子によって、固定金型側のキャビティと可動金型側の
キャビティを分離させて別個独立のキャビティを形成す
ることで２倍の個数の製品が同時に鋳造出来る。この
際、崩壊性の中子を使用することで中間可動型のような
大掛かりな装置を設けなくても鋳造品を取り出すことが
出来る。また、この中子に鋳抜き形状部を設ければ、鋳
抜き穴等の必要な製品を簡単に鋳造出来る。また、この
中子に湯道等の方案部の一部を形成すれば、方案部の構
造等が単純化され、しかも、例えば中子を熱伝導性の低
い部材で構成すれば、同部の湯流れ性が良好となる。[Action] The disintegrating core sandwiched between the fixed mold and the movable mold separates the cavity on the fixed mold side and the cavity on the movable mold side to form a separate and independent cavity, thereby doubling the number of times. Products can be cast at the same time. At this time, by using a collapsible core, a cast product can be taken out without providing a large-scale device such as an intermediate movable type. In addition, if the core is provided with a cast-out portion, a product requiring a cast-out hole or the like can be easily cast. Further, if a part of a plan part such as a runner is formed in this core, the structure of the plan part is simplified, and, for example, if the core is made of a member having low thermal conductivity, the part of the part is formed. Hot water flowability is improved.
【０００６】[0006]
【実施例】本発明の金型鋳造法の実施例について添付し
た図面に基づき説明する。図１は本発明の金型鋳造法の
型合せ状態を示す金型断面図、図２は固定金型の正面
図、図３は可動金型の正面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the mold casting method of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a sectional view of a mold showing a mold matching state of the mold casting method of the present invention, FIG. 2 is a front view of a fixed mold, and FIG. 3 is a front view of a movable mold.
【０００７】本発明の金型鋳造法は、従来の金型鋳造方
式に較べ同じ金型分割面の面積でありながら従来以上の
個数の製品を同時に鋳造出来るようにした鋳造法であ
り、図１に示すように、固定金型１と可動金型２によっ
て挟み込まれる中子型３使用して鋳造する。[0007] The mold casting method of the present invention is a casting method in which a larger number of products can be cast simultaneously than in the past while having the same area of the mold division surface as compared with the conventional mold casting method. As shown in the figure, casting is performed using a core mold 3 sandwiched between a fixed mold 1 and a movable mold 2.
【０００８】そして、各金型１、２は例えばねずみ鋳鉄
等の素材から構成され、中子型３は金型１、２より熱伝
導性の低いシャル型から構成されている。[0008] Each of the dies 1 and 2 is made of a material such as gray cast iron, for example, and the core mold 3 is made of a char type having lower thermal conductivity than the dies 1 and 2.
【０００９】また、かかる金型１、２の型合せ面ｐに
は、夫々の金型１、２ごと形状の異なるキャビティ４、
５が形成されており、図２に示す固定金型１の型合せ面
ｐには、キャビティ４に連なる方案部６が形成され、図
３に示す可動金型２の型合せ面ｐには、キャビティ５に
連なる方案部７が対称位置に形成されている。In addition, the cavities 4 having different shapes for the respective dies 1 and 2 are provided on the mating surfaces p of the dies 1 and 2.
5 is formed, a plan portion 6 connected to the cavity 4 is formed on the mold mating surface p of the fixed mold 1 shown in FIG. 2, and the mold mating surface p of the movable mold 2 shown in FIG. A plan part 7 connected to the cavity 5 is formed at a symmetric position.
【００１０】そして、各方案部６、７は、溶湯を注湯す
る湯口８と、湯口底９から水平に延出する水平湯道１０
と、この水平湯道１０から立ち上がる立上り湯道１１
と、この立上り湯道６から左右にトンネル状に潜って枝
分れする複数の枝湯道１２を備え、トンネル状の各枝湯
道１２が前記各キャビティ４、５の底部に連通してい
る。Each of the plan parts 6 and 7 comprises a gate 8 for pouring the molten metal and a horizontal runner 10 extending horizontally from the bottom 9 of the gate.
And rising runner 11 rising from this horizontal runner 10
And a plurality of branch runners 12 branching left and right from the rising runner 6 in a tunnel shape, and the tunnel-shaped branch runners 12 communicate with the bottoms of the cavities 4 and 5. .
【００１１】また、各金型１、２の型合せ面ｐには、縦
列のキャビティ４、‥（又は５、‥）の周囲を若干浅め
に彫り込んだ矩形状の凹部１３が形成され、この凹部１
３は実施例の場合、立上り湯道１１を挟んで左右一対設
けられている。そして、この凹部１３は、以下に述べる
中子型３の矩形部３ａを嵌め込むためのものであり、前
記トンネル状の枝湯道１２に干渉しない深さとされてい
る。On the mating surface p of each of the molds 1 and 2, there is formed a rectangular recess 13 in which the peripheries of the cavities 4, ‥ (or 5, ‥) are engraved slightly shallowly. 1
In the case of the embodiment, a pair 3 is provided on the left and right sides of the rising runner 11. The recess 13 is for fitting the rectangular portion 3a of the core 3 described below, and has a depth that does not interfere with the tunnel-shaped branch runway 12.
【００１２】中子型３は、例えばレジン砂を粘結した崩
壊性のシェル型からなり、前記凹部１３と同形で且つ厚
みが両金型１、２の凹部１３、１３の深さの和とほぼ同
程度の矩形部３ａと、この矩形部３ａの両面から各キャ
ビティ４、５内に向けて張出す複数の鋳抜き形状部３
ｂ、３ｃを備えるとともに、この中子型３を例えば固定
金型１にセットして可動金型２との間で型締めした際、
前記矩形部３ａによって固定金型１側のキャビティ４と
可動金型２側のキャビティ５を分離させ得るようにして
いる。The core mold 3 is formed of, for example, a collapsible shell mold made of resin sand, and has the same shape as the recess 13 and a thickness equal to the sum of the depths of the recesses 13 and 13 of both the molds 1 and 2. A substantially same rectangular portion 3a and a plurality of cast-out portions 3 projecting from both sides of the rectangular portion 3a into the respective cavities 4,5.
b, 3c, and when the core mold 3 is set in, for example, the fixed mold 1 and clamped with the movable mold 2,
The cavity 4 on the fixed mold 1 side and the cavity 5 on the movable mold 2 side can be separated by the rectangular portion 3a.
【００１３】また、前記鋳抜き形状部３ｂ、３ｃは製品
に鋳抜き穴等を形成するためのものであり、中子型３を
位置決めした状態では図２、図３のキャビティ４、５内
に破線で示す位置にセットされる。The cast-out portions 3b and 3c are for forming cast holes and the like in a product. When the core mold 3 is positioned, the cast-out portions 3b and 3c are formed in the cavities 4 and 5 shown in FIGS. It is set to the position indicated by the broken line.
【００１４】このような金型構造において、例えば固定
金型１の凹部１３に中子型３を嵌め込んでセットする
と、図４に示すように枝湯道１２は中子型３と干渉する
ことなくキャビティ４に連通し、また、可動金型２を型
締めしても、図５に示すように枝湯道１２は中子型３に
干渉することなくキャビティ５に連通する。In such a mold structure, for example, when the core mold 3 is fitted and set in the recess 13 of the fixed mold 1, the branch runner 12 interferes with the core mold 3 as shown in FIG. Even if the movable mold 2 is clamped, the branch runner 12 communicates with the cavity 5 without interfering with the core mold 3 as shown in FIG.
【００１５】このような金型構造において、湯口８から
注湯した溶湯は水平湯道１０、立上り湯道１１、枝湯道
１２を介してキャビティ４、５内に入り込み各キャビテ
ィ４、５内で冷却固化するが、従来の型合せ面ｐの面積
と同一の装置において従来の２倍の個数の製品を同時に
鋳造することが出来る。In such a mold structure, the molten metal poured from the gate 8 enters the cavities 4 and 5 through the horizontal runner 10, rising runner 11 and branch runner 12, and in each of the cavities 4,5. Although it is cooled and solidified, twice the number of products can be simultaneously cast in the same apparatus as the conventional mold surface p.
【００１６】またこの際、一般的に熱伝導性の良い金型
の場合、砂型等に較べて充填末端側のキャビティ４、５
内では急冷されて湯廻り性が悪くなり充填不良等の鋳造
欠陥を生じやすいが、本案ではキャビティ４、５の一部
に熱伝導性の良くない中子型３が臨んでいるため凝固速
度が遅くなり、押湯効果が高まる。At this time, in general, in the case of a mold having good heat conductivity, the cavities 4, 5 on the filling end side as compared with a sand mold or the like.
In the case, the core is rapidly cooled and the meltability deteriorates, and casting defects such as poor filling are likely to occur. However, in the present invention, the core mold 3 having poor thermal conductivity faces a part of the cavities 4 and 5, so that the solidification speed is low. It becomes slow and the hot water effect increases.
【００１７】そして、凝固が完了すると型開きし中子型
３を崩壊させると、鋳抜き形状部３ｂ、３ｃによって鋳
抜き穴が形成された鋳造品が取り出される。When the solidification is completed, the mold is opened and the core mold 3 is disintegrated, and a cast product having a cast hole formed by the cast shape portions 3b and 3c is taken out.
【００１８】以上のような鋳造法によって、装置の大型
化、複雑化を招くことなく生産性を向上させることが出
来る。By the above-described casting method, productivity can be improved without increasing the size and complexity of the apparatus.
【００１９】次に中子型３に枝湯道１２の一部を形成す
る場合の実施例について図６に基づき説明する。Next, an embodiment in which a part of the branch water path 12 is formed in the core mold 3 will be described with reference to FIG.
【００２０】この場合は中子型３に枝湯道１２に連通す
る湯道通路１４を形成し、この湯道通路１４を両キャビ
ティ４、５内に開口させるようにしている。In this case, a runner passage 14 communicating with the branch runner 12 is formed in the core mold 3, and the runner passage 14 is opened in the cavities 4 and 5.
【００２１】この場合は、流動性の低下しやすい湯道末
端部が熱伝導性の良くない中子型３の湯道通路１４で構
成されるため、湯道の凝固速度を遅らせて流動性を確保
することが出来る。In this case, since the end of the runner, whose flowability is liable to decrease, is constituted by the runner passage 14 of the core 3 having poor heat conductivity, the solidification speed of the runner is slowed to increase the flowability. Can be secured.
【００２２】従って、流動性、湯廻り性がより向上し、
充填不足、引け巣、寸法精度の不良等が抑制され、鋳造
品質を高めることが出来る。勿論、実施例のようにキャ
ビティ４、５の形状が異なることは必須要件ではなく、
また、中子型３の素材についても自由である。Therefore, the fluidity and the running property are further improved,
Insufficient filling, shrinkage cavities, poor dimensional accuracy, etc. are suppressed, and casting quality can be improved. Of course, it is not essential that the shapes of the cavities 4 and 5 are different as in the embodiment,
The material of the core mold 3 is also free.
【００２３】[0023]
【発明の効果】以上のように本発明の金型鋳造法は、金
型間に崩壊性の中子を挟み込み、この中子によって固定
金型側のキャビティと可動金型側のキャビティを分離さ
せて、別個独立のキャビティを形成するようにしたた
め、従来と同一の分割面の面積でありながら同時に鋳造
出来る製品の個数を増やすことが出来る。つまり、装置
の大型化、複雑化を招くことなく生産性を高めることが
出来る。また、充填末端側の方案部の一部或いはキャビ
ティの一部に中子が臨むことになるため、例えば熱伝導
性の良くない中子を使用すれば、流動性、湯廻り性の低
下を防ぐことが出来る。従って充填不足、引け巣等の鋳
造欠陥が防止される等の効果を奏する。As described above, in the mold casting method of the present invention, a collapsible core is sandwiched between the dies, and the cavity on the fixed mold side and the cavity on the movable mold side are separated by the core. Thus, since separate and independent cavities are formed, it is possible to increase the number of products that can be cast at the same time while having the same area of the divided surface as in the related art. That is, productivity can be increased without increasing the size and complexity of the device. In addition, since the core faces a part of the mold part or a part of the cavity on the side of the filling end, for example, if a core having poor heat conductivity is used, a decrease in fluidity and running property is prevented. I can do it. Therefore, there is an effect that casting defects such as insufficient filling and shrinkage cavities are prevented.
【図１】本発明の金型鋳造法の型合せ状態を示す金型断
面図FIG. 1 is a cross-sectional view of a mold showing a mold matching state of a mold casting method of the present invention.
【図２】固定金型の正面図FIG. 2 is a front view of a fixed mold.
【図３】可動金型の正面図FIG. 3 is a front view of a movable mold.
【図４】中子のセット状態の一部斜視図FIG. 4 is a partial perspective view of a set state of a core.
【図５】中子型と枝湯道の関係図FIG. 5 is a diagram showing the relationship between a core type and a branch bath.
【図６】湯道の一部を中子型に形成する場合の構成例図FIG. 6 is a structural example diagram when a part of a runner is formed in a core type.
１ 固定金型 ２ 可動金型 ３ 中子型 ３ｂ、３ｃ 鋳抜き形状部 ４、５ キャビティ ６、７ 方案部 １４ 湯道通路 DESCRIPTION OF SYMBOLS 1 Fixed mold 2 Movable mold 3 Core mold 3b, 3c Cast-out shape part 4, 5 Cavity 6, 7 Model part 14 Runner passage
フロントページの続き (72)発明者 山口 二三夫 埼玉県狭山市新狭山１丁目10番地１ ホ ンダエンジニアリング株式会社内 (72)発明者 小玉 春喜 埼玉県狭山市新狭山１丁目10番地１ ホ ンダエンジニアリング株式会社内 (58)調査した分野(Int.Cl.6，ＤＢ名) B22C 9/06 B22C 9/10Continued on the front page (72) Inventor Fumio Yamaguchi 1-10-1, Shinsayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (72) Haruki Kodama 1-1-10-1, Shin-Sayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. In-company (58) Field surveyed (Int.Cl. 6 , DB name) B22C 9/06 B22C 9/10
Claims (3)
を挟み込み、この中子によって固定金型側のキャビティ
と可動金型側のキャビティを分離させて別個独立のキャ
ビティを形成し鋳造することを特徴とする金型鋳造法。1. A collapsible core is sandwiched between a fixed mold and a movable mold, and the core on the fixed mold side and the cavity on the movable mold side are separated by the core to form separate and independent cavities. A die casting method characterized by performing casting.
特徴とする請求項１に記載の金型鋳造法。2. The die casting method according to claim 1, wherein the core has a cast-out portion.
を特徴とする請求項１又は請求項２に記載の金型鋳造
法。3. The die casting method according to claim 1, wherein a part of a plan portion is formed in the core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19634793A JP2763051B2 (en) | 1993-08-06 | 1993-08-06 | Mold casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19634793A JP2763051B2 (en) | 1993-08-06 | 1993-08-06 | Mold casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0747446A JPH0747446A (en) | 1995-02-21 |
| JP2763051B2 true JP2763051B2 (en) | 1998-06-11 |
Family
ID=16356332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19634793A Expired - Fee Related JP2763051B2 (en) | 1993-08-06 | 1993-08-06 | Mold casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2763051B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100475581B1 (en) * | 2002-08-13 | 2005-03-10 | 전부곤 | Parts manufacturing process for pipe connector |
| JP2014042917A (en) * | 2012-08-24 | 2014-03-13 | Showa Denko Kk | Method for manufacturing cast product |
| CN104148584A (en) * | 2014-08-20 | 2014-11-19 | 无锡柯马机械有限公司 | Method for casting metal mold |
| CN104148585A (en) * | 2014-08-22 | 2014-11-19 | 南车戚墅堰机车有限公司 | Casting method for nodular cast iron crankshaft used for internal combustion locomotive |
| CN104493099B (en) * | 2014-12-19 | 2016-07-27 | 扬州峰明金属制品有限公司 | The core of many inner cavity revolution body structural member |
| CN113680976B (en) * | 2021-07-19 | 2024-02-20 | 东风精密铸造有限公司 | Die structure and molding method for molding metal type venturi tube |
-
1993
- 1993-08-06 JP JP19634793A patent/JP2763051B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0747446A (en) | 1995-02-21 |
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