JPS60121038A - Assembling method of casting mold - Google Patents
Assembling method of casting moldInfo
- Publication number
- JPS60121038A JPS60121038A JP22706883A JP22706883A JPS60121038A JP S60121038 A JPS60121038 A JP S60121038A JP 22706883 A JP22706883 A JP 22706883A JP 22706883 A JP22706883 A JP 22706883A JP S60121038 A JPS60121038 A JP S60121038A
- Authority
- JP
- Japan
- Prior art keywords
- cores
- core
- mold
- cylinder block
- combined
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/12—Accessories
- B22C21/14—Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、鋳型の組立方法の改良に関するものであり、
エンジン用シリンダブロック鋳造用鋳型等の製作に応用
できるものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a method for assembling a mold,
It can be applied to the production of molds for casting engine cylinder blocks, etc.
（従来技術）
鋳造品は、それに対応する形状を有する鋳型に溶湯を導
いて製作するようになっているが、鋳型にはその鋳造品
の形状に対応して形状の複雑なものがあり、たとえば、
エンジン用シリンダブロック鋳造用鋳型の場合には、特
公昭５１−１０１７７号公報に開示されているように、
シリンダブロックのクランク座成形部に存在する中間軸
受部の形状が複雑であるために、その中間軸受部に対応
する形状の溶湯侵入部を有するシリンダブロック用中子
を一度に造型することが困難で、そこで、あらかじめ造
型された中間軸受部相当中子を模型上に保持させ、この
中間軸受部相当中子をブロー成形用金型等を使用してこ
の中間軸受部相当中子を一体にくるみもつようにしてシ
リンダブロック用中子を造型するようにしているが、シ
リンダブロック用中子の造型上程が二段階となるため、
シリンダブロック用中子の生産効率の向上を図り難いも
のとなっている。(Prior art) Cast products are manufactured by introducing molten metal into a mold with a corresponding shape, but some molds have complex shapes that correspond to the shape of the cast product. ,
In the case of engine cylinder block casting molds, as disclosed in Japanese Patent Publication No. 51-10177,
Due to the complicated shape of the intermediate bearing part in the molded part of the crank seat of the cylinder block, it is difficult to mold a cylinder block core with a molten metal entry part of a shape corresponding to the intermediate bearing part at once. Therefore, a pre-molded core corresponding to the intermediate bearing part is held on a model, and this core corresponding to the intermediate bearing part is wrapped integrally using a blow molding mold or the like. The cylinder block core is molded in this way, but since the molding process for the cylinder block core is in two stages,
This makes it difficult to improve the production efficiency of cylinder block cores.
ところで、鋳型には、」二記の構成のものとは別に、中
子を分割構成として組立るようにしたものがある。たと
えば、シリンダブロック用中子の場合には、中間軸受部
に相当する部分で分割された分割中子を対向組み合わせ
て組立中子としてのシリンダブロック用中子を構成し、
その分割中子の対向隙間が中間軸受部に対応する形状の
溶湯侵入部となるようにして鋳型を組立るようにしてい
るが、シリンダブロック用中子を組み立てるに際しての
分割中子の相対位置決めが難かしくてその対向隙間を精
度よく確保することが容易にできず、であるがために、
鋳造品としてのシリンダブロックの精度の向−にを図り
難く、かつ、この分割中子の相対位置決めに手間がかか
って鋳型の組立てに時間を要し、生産性の向上を期待し
難いものとなっている。By the way, in addition to the molds having the configuration described in section 2, there are molds in which the core is assembled in a split configuration. For example, in the case of a cylinder block core, split cores that are divided at a portion corresponding to the intermediate bearing portion are combined face to face to form a cylinder block core as an assembled core.
The mold is assembled so that the opposing gap between the split cores serves as a molten metal intrusion section with a shape corresponding to the intermediate bearing part, but the relative positioning of the split cores is difficult when assembling the cylinder block core. It is difficult and it is not easy to secure the facing gap accurately, so
It is difficult to improve the accuracy of the cylinder block as a cast product, and the relative positioning of these split cores takes time and time to assemble the mold, making it difficult to expect productivity to improve. ing.
（発明の目的）
本発明の目的は、分割中子を組み合わせて組立中子を形
成する構成の鋳型において、その鋳型の組立てを迅速か
つ精度よく行なうことのできる鋳型の組立方法を提供す
ることにある。(Object of the Invention) An object of the present invention is to provide a method for assembling a mold that can be assembled quickly and accurately in a mold configured to form an assembled core by combining split cores. be.
（発明の構成）
本発明の特徴は、分割中子の対向間に形成される溶湯侵
入部と略同−形状を有する消失性部材な用意し、その消
失性部材に分割中子を相対的に位置決めする機能をもた
せ、その分割中子を対向組み合わせて組立中子を形成す
るに際し、その消失性部材をその分割中子の対向間に介
在させつつ組立てを行なうようにしたものである。(Structure of the Invention) A feature of the present invention is that a fugitive member having approximately the same shape as the molten metal intrusion portion formed between opposing split cores is prepared, and the split core is placed relative to the fugitive member. It has a positioning function, and when the divided cores are assembled facing each other to form an assembled core, the fusible member is interposed between the facing divided cores to perform the assembly.
なお、特公昭５１−１０１７７号公報には、消失性部材
としての可燃性物質を中間軸受部相当中子の相互間に形
成される隙間に設ける構成が開示されているが、これは
、この相互間に形成される隙間に鋳物砂が侵入すること
を防止するだめのもので、消失性部材を利用して中間軸
受部相当中子相互間の位置決めを企図したものではない
。Note that Japanese Patent Publication No. 51-10177 discloses a configuration in which a flammable substance as a fugitive member is provided in the gap formed between the cores corresponding to the intermediate bearing part. This is only to prevent molding sand from entering the gap formed between them, and is not intended to position the cores corresponding to the intermediate bearing portions using a fugitive member.
（実施例）
以下に本発明に係る鋳型の組立方法を、エンジン用シリ
ンダブロック鋳造用鋳型を例にあげつつ説明する。(Example) The method for assembling a mold according to the present invention will be described below, using a mold for casting a cylinder block for an engine as an example.
第１図は、エンジン用シリンダブロック鋳造用鋳型の一
部を構成するシリンダブロック用中子の組立前の状態を
示すもので、ここでは、このシリンダブロック用中子は
、３気筒型シリンダブロツク鋳造用のものとされており
、このシリンダプロ・ンク用中子は、シリンダブロック
の中間軸受相当部分で３分割される構成とされており、
この図において、１〜３は分割中子、４．５は、消失性
部材を示すものである。分割中子ｌ〜３は、シリンダブ
ロック（図示を略す）のボアを形成するためのボア相当
中子部６と、嵌合突起部７とを有している。各分割中子
１〜３には、この各分割中子１〜３を対向組み合わせた
際に対向する対向面８に、シリンダブロックの中間軸受
部形成用の半円形凹所９が形成されている。消失性部材
４．５は、発泡スチロール等の可燃性物質から構成され
ており、この消失性部材４．５は各分割中子ｌ〜３を対
向組み合わせた際に形成される溶湯侵入部と略同−形状
に形成されるもので、ここでは、第２図に示すように中
間軸受部に対応する形状の中間軸受相当部ｌＯと、シリ
ンダブロックの下部と中間軸受部とを連結する連結部に
対応する形状の連結部相当部１１とを有している。中間
軸受相当部ｌＯは、半円形凹所９に嵌合されるようにな
っており、第１図に示すように、消失性部材４．５を各
分割中子１〜３の対向間に介在させつつ各分割中子１〜
３を順次重合組み合わせて、組立中子としてシリンダブ
ロック用中子１２を構成するものであり、第３図、第４
図には、このようにして構成されたシリンダブロック用
中子１２が示されている。このシリンダブロック用中子
１２の組立てに際して、消失性部材４．５は各分割中子
１〜３の相対位置決めを行なう機能を有するものであり
、シリンダブロック用中子１２はその消失性部材４．５
によって、溶湯侵入部の精度が確保される。しかる後に
、このシリンダブロック用中子１２を囲繞する横主型１
３．１４と上止型１５とをこのシリンダブロック用中子
１２に係合させて鋳型１７を構成するものであり、第３
図には、横主型１３．１４をシリンダプロ・ンク用中子
１２に係合させる状態が示されており、この第３図にお
いて、１６は嵌合突起部７と嵌合する嵌合孔であり、シ
リンダブロック用中子１２は消失性部材４．５によって
相対位置決めがなされているから−の嵌合が容易であり
、第４図には、上止型１５を係合させて鋳型１７が完成
された状態が示されており、この第４図において、溶湯
を鋳型１７に導くとその鋳型１７の隙間１８に溶湯が充
満されてシリンダブロックが形成されるものであり、そ
の際溶湯によって、消失性部材４．５が溶けてガス化し
、この消失性部材４．５が存在していた部分が溶湯侵入
部となって、シリンダブロックの下部と中間軸受部とを
連結する連結部と共に中間軸受部が形成されるものであ
る。Figure 1 shows the state before assembly of a cylinder block core that constitutes a part of a mold for casting a cylinder block for an engine. The core for this cylinder pro-nk is divided into three parts at the portion corresponding to the intermediate bearing of the cylinder block.
In this figure, 1 to 3 represent split cores, and 4.5 represents a dissipative member. The divided cores 1 to 3 have a core portion 6 corresponding to a bore for forming a bore of a cylinder block (not shown), and a fitting protrusion 7. A semicircular recess 9 for forming an intermediate bearing portion of the cylinder block is formed in each of the divided cores 1 to 3 on opposing surfaces 8 that face each other when the divided cores 1 to 3 are combined facing each other. . The fugitive member 4.5 is made of a combustible material such as styrofoam, and the fugitive member 4.5 is approximately the same as the molten metal entry portion formed when the divided cores 1 to 3 are combined facing each other. - It corresponds to the intermediate bearing equivalent part lO, which has a shape corresponding to the intermediate bearing part, as shown in Fig. 2, and the connecting part that connects the lower part of the cylinder block and the intermediate bearing part. It has a connecting portion equivalent portion 11 having a shape of . The intermediate bearing equivalent portion lO is fitted into the semicircular recess 9, and as shown in FIG. Each split core 1~
3 are sequentially polymerized and combined to constitute a cylinder block core 12 as an assembly core.
The figure shows a cylinder block core 12 constructed in this manner. When assembling this cylinder block core 12, the fugitive member 4.5 has the function of relative positioning of each divided core 1-3, and the cylinder block core 12 is a fugitive member 4.5. 5
This ensures the accuracy of the molten metal entry part. After that, a horizontal main mold 1 surrounding this cylinder block core 12 is formed.
3.14 and the upper stopper die 15 are engaged with this cylinder block core 12 to constitute the mold 17, and the third
The figure shows a state in which the horizontal main molds 13 and 14 are engaged with the cylinder prong core 12. In this figure, 16 is a fitting hole that fits into the fitting protrusion 7. Since the cylinder block core 12 is relatively positioned by the fugitive member 4.5, the fitting is easy. In this figure, when the molten metal is introduced into the mold 17, the gap 18 of the mold 17 is filled with the molten metal to form a cylinder block. , the fugitive member 4.5 melts and gasifies, and the part where the fugitive member 4.5 was present becomes a molten metal intrusion part, and the intermediate part along with the connecting part connecting the lower part of the cylinder block and the intermediate bearing part. A bearing portion is formed therein.
なお、この実施例では、本発明に係る鋳型の組立方法を
理解し易く説明するために、シリンダポア川中子、各主
型の形状が簡略化されて図示されており、たとえば、第
４図においては、ウォータジャケット中子、ウォータポ
ンプ中子等の図示が省略されている。In this example, in order to explain the mold assembly method according to the present invention in an easy-to-understand manner, the shapes of the cylinder pore core and each main mold are shown in a simplified manner. For example, in FIG. Illustrations of the water jacket core, water pump core, etc. are omitted.
以上、実施例においては、シリンダブロック鋳造用鋳型
について説明したが、本発明に係る鋳型の組立方法は、
複数個の分割中子を対向組み合わせて、その対向間に溶
湯侵入部か形成される組立中子を使用して鋳型を製作す
る方法に適用できるものである。In the above embodiments, a cylinder block casting mold has been described, but the mold assembly method according to the present invention is as follows:
The present invention can be applied to a method of manufacturing a mold using an assembled core in which a plurality of divided cores are assembled facing each other and a molten metal entry portion is formed between the facing parts.
（発明の効果）
本発明は、以上説明したように、分割中子を対向させて
その対向間に溶湯侵入部を有する組立中子を形成する際
に、その溶湯侵入部と略同−形状を有する消失性部材を
その分割中子の対向間に介在させて各分割中子の相対位
置決めを行ないつつ溶湯侵入部を有する組立中子を形成
するようにしたので、分割中子を使用する構成の鋳型の
場合にあっても、その鋳型の組立てを迅速に、かつ、精
度よく行なうことができるという効果を奏する。(Effects of the Invention) As explained above, when forming an assembled core having split cores facing each other and having a molten metal intrusion part between the opposed cores, the present invention provides a method for forming a core having substantially the same shape as the molten metal intrusion part. By interposing the fugitive member having the split core between the opposing split cores to perform relative positioning of each split core, an assembled core having a molten metal intrusion portion is formed. Even in the case of a mold, the mold can be assembled quickly and accurately.
ｍ１図は、本発明に係る分割中子の組立前の状態を示す
側面図、
第２図は、本発明に係る消失性部材の概略構成を示す斜
視図、
第３図は、本発明に係る鋳型の組立途中の状態を示す平
面図、
第４図は、本発明に係る鋳型の完成状態の概略構成を示
す断面図、
である。
１〜３・・・―・分割中子
４．５拳や・拳・消失性部材
７會拳・・１１嵌合突起
１２会拳・・・シリンダブロック用中子１３〜１５−・
・・主型
１６・・Φ・嵌合孔
１７・・・・鋳型Figure m1 is a side view showing a state before assembly of the split core according to the present invention, Figure 2 is a perspective view showing a schematic configuration of the fugitive member according to the present invention, and Figure 3 is a side view showing the state before assembly of the split core according to the present invention. FIG. 4 is a plan view showing a state in which the mold is being assembled. FIG. 4 is a sectional view showing a schematic configuration of the mold in a completed state according to the present invention. 1 to 3...--Divided core 4.5 Fist, fist, vanishable member 7 Fist...11 Fitting protrusion 12 Fist... Cylinder block core 13 to 15--
・・Main mold 16・・Φ・Fitting hole 17・・・・Mold
Claims (1)
間に形成される溶湯侵入部と略同−形状に形成された消
失性部材を用意し、該消失性部材を前記各分割中子の対
向間に介在させつつ前記各分割中子を順次位置決めして
溶湯侵入部を有する組立中子を構成し、しかる後、該組
立中子にその組立中子を囲繞する主型を係合させて鋳型
を組み立てることを特徴とする鋳型の組立方法。(1) A fugitive member formed in approximately the same shape as the molten metal intrusion portion formed between the opposing combinations of a plurality of split cores is prepared, and the fugitive member is attached to each of the split cores. The divided cores are sequentially positioned while being interposed between the opposing cores to form an assembly core having a molten metal entry portion, and then a main mold surrounding the assembly core is engaged with the assembly core. A mold assembly method characterized by assembling a mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22706883A JPS60121038A (en) | 1983-12-02 | 1983-12-02 | Assembling method of casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22706883A JPS60121038A (en) | 1983-12-02 | 1983-12-02 | Assembling method of casting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60121038A true JPS60121038A (en) | 1985-06-28 |
Family
ID=16855027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22706883A Pending JPS60121038A (en) | 1983-12-02 | 1983-12-02 | Assembling method of casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60121038A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4932459A (en) * | 1987-10-22 | 1990-06-12 | Erana Augustin A | Formation of foundry core blocks |
| US4989661A (en) * | 1987-10-22 | 1991-02-05 | Erana Augustin A | Formation of foundry core blocks |
| WO1999037421A1 (en) * | 1998-01-23 | 1999-07-29 | Siemens Aktiengesellschaft | Cast part, method for producing a cast part and casting mould |
| US6435259B1 (en) * | 2000-12-22 | 2002-08-20 | International Engine Intellectual Property Company, L.L.C. | Core assembly method for cylinder head castings |
| JP2006097608A (en) * | 2004-09-30 | 2006-04-13 | Shin Ace:Kk | Core for casting cylinder head with variable swirl intake device |
| CN104259394A (en) * | 2014-10-10 | 2015-01-07 | 上海宝钢铸造有限公司 | Sand core string device and method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55161547A (en) * | 1979-06-04 | 1980-12-16 | Deere & Co | Preparation of metal casting and core assembling body used for said method |
| JPS58184040A (en) * | 1982-04-22 | 1983-10-27 | Nissan Motor Co Ltd | Core for cylinder block of internal-combustion engine and molding method thereof |
-
1983
- 1983-12-02 JP JP22706883A patent/JPS60121038A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55161547A (en) * | 1979-06-04 | 1980-12-16 | Deere & Co | Preparation of metal casting and core assembling body used for said method |
| JPS58184040A (en) * | 1982-04-22 | 1983-10-27 | Nissan Motor Co Ltd | Core for cylinder block of internal-combustion engine and molding method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4932459A (en) * | 1987-10-22 | 1990-06-12 | Erana Augustin A | Formation of foundry core blocks |
| US4989661A (en) * | 1987-10-22 | 1991-02-05 | Erana Augustin A | Formation of foundry core blocks |
| WO1999037421A1 (en) * | 1998-01-23 | 1999-07-29 | Siemens Aktiengesellschaft | Cast part, method for producing a cast part and casting mould |
| US6435259B1 (en) * | 2000-12-22 | 2002-08-20 | International Engine Intellectual Property Company, L.L.C. | Core assembly method for cylinder head castings |
| WO2002051567A3 (en) * | 2000-12-22 | 2003-08-21 | Int Engine Intellectual Prop | Core assembly method for cylinder head castings |
| JP2006097608A (en) * | 2004-09-30 | 2006-04-13 | Shin Ace:Kk | Core for casting cylinder head with variable swirl intake device |
| CN104259394A (en) * | 2014-10-10 | 2015-01-07 | 上海宝钢铸造有限公司 | Sand core string device and method thereof |
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