JPH03184652A - Metallic mold for forming core - Google Patents
Metallic mold for forming coreInfo
- Publication number
- JPH03184652A JPH03184652A JP32299889A JP32299889A JPH03184652A JP H03184652 A JPH03184652 A JP H03184652A JP 32299889 A JP32299889 A JP 32299889A JP 32299889 A JP32299889 A JP 32299889A JP H03184652 A JPH03184652 A JP H03184652A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- sand core
- insert
- sectional area
- core
- 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
- 238000000465 moulding Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Landscapes
- 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、自動車のディファレンシャルハウジング鋳造
用鋳型の砂中子のように、部分毎の断面積の差が大きい
砂中子を、上金型と下金型の上下動ストロークの少ない
成型機で成型する際に用いる中子成型用金型に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is directed to the use of sand cores with large differences in cross-sectional area from part to part, such as sand cores for automobile differential housing casting molds. and relates to a core molding die used when molding with a molding machine having a small vertical movement stroke of the lower mold.
（従来の技術）
従来、アンダーカット部などとなる形状の砂中子を成型
する場合、実公昭５２−８９７号公報に記載された発明
のように、金型をルーズピース形式にして砂中子を金型
から離型するために金型の当該部分を一部分割した鋳型
成型用金型がある。(Prior Art) Conventionally, when molding a sand core having a shape such as an undercut part, a mold is made into a loose piece type as in the invention described in Japanese Utility Model Publication No. 52-897. There is a mold for molding in which the part of the mold is partially divided in order to release the mold from the mold.
（発明が解決しようとする課題）
自動車のディファレンシャルハウジングを鋳造するため
の鋳型の砂中子のように、ディファレンシャルギヤを収
納する部分と軸部分のように、部分毎の断面積の差が大
きい砂中子を、既設の上金型と下金型の上下動ストロー
クの少ない成型機で成型しようとすると、ディファレン
シャルギヤを収納する部分の寸法が上金型と下金型の上
下動ストロークよりも大きいので、成型された砂中子を
金型から取り出すことができない。(Problem to be Solved by the Invention) Sand cores for molds used to cast automobile differential housings have large differences in cross-sectional area between parts, such as the part that houses the differential gear and the shaft part. When trying to mold a core using an existing molding machine with a small vertical stroke of the upper and lower molds, the dimensions of the part that accommodates the differential gear are larger than the vertical strokes of the upper and lower molds. Therefore, the molded sand core cannot be removed from the mold.
上金型と下金型の上下動ストロークが大きい成型機を設
置すれば解決するが、このような成型機は設備費が多大
であり、また、この成型機を設置する工場面積も必要と
なる。そしてこれほどのストロークを必要としない鋳型
を成型するときは金型の上下動に時間を要し、生産性が
低下する。This problem can be solved by installing a molding machine with a large vertical stroke of the upper and lower molds, but such a molding machine requires a large amount of equipment cost and also requires a large factory area to install this molding machine. . When molding a mold that does not require such a stroke, it takes time to move the mold up and down, reducing productivity.
（課題を解決するための手段）
本発明は、上記のような課題を解決するために発明され
たもので、部分毎の断面積の差が大きく長大な砂中子の
成型用金型であって、その砂中子の断面積がもっとも太
くなる箇所およびその近傍を横抜き分割金型としたこと
を特徴とする中子成型用金型である。(Means for Solving the Problems) The present invention was invented in order to solve the above problems, and is a mold for molding a long sand core with large differences in cross-sectional area between parts. This mold for forming a core is characterized in that the part where the cross-sectional area of the sand core is the thickest and the vicinity thereof are made into a horizontally punched split mold.
横抜き分割金型は、離型の作業にはいって上金型が上昇
した後、金型本体から水平方向に横に引抜いて、金型本
体の外郭を外れた箇所で下方に転倒させる機構のものに
する。Horizontal punching split molds have a mechanism in which after the upper mold goes up during the mold release process, it is pulled out horizontally from the mold body and then falls down at a point where it leaves the outer shell of the mold body. Make it into something.
この機構はエヤーシリンダーで駆動するものとすると便
利である。It is convenient if this mechanism is driven by an air cylinder.
（作用と実施例）
本発明の中子成型用金型は、上型と下型で構成されてお
り、上型と下型を締めて鋳型成型用キャビティ中に鋳砂
を充填して砂中子を成型する。(Operations and Examples) The core molding mold of the present invention is composed of an upper mold and a lower mold, and the upper mold and the lower mold are tightened, and the mold cavity is filled with sand. mold the child.
成型後、上型を上昇させる。After molding, raise the upper mold.
第１図に示すように、下型（１）で砂中子の断面積がも
っとも太くなる箇所およびその近傍を横抜き分割金型と
した入子（２）を、横抜き分割金型とし、引抜き用エヤ
ーシリンダー（３）の作用で水平方向に横に引き抜くと
、第２図に示すようになって、入子（２）が下型（１１
本体の外郭よりも外方に出た位置で、第３図に示すよう
に、転倒用エヤーシリンダー（４）の作用で、引抜き方
向の直角方向に入子（２）を転倒させる。As shown in Fig. 1, the lower mold (1) is made into a horizontally punched split mold at the point where the cross-sectional area of the sand core is the thickest and its vicinity, and the insert (2) is made into a horizontally punched split mold, When pulled out horizontally by the action of the drawing air cylinder (3), the insert (2) is pulled out from the lower mold (11) as shown in Figure 2.
As shown in FIG. 3, at a position protruding outward from the outer shell of the main body, the insert (2) is overturned in a direction perpendicular to the pulling direction by the action of the overturning air cylinder (4).
入子の幅は、砂中子の断面積がもつとも太くなる箇所お
よびその近傍が、砂中子を下ビンで押し上げ離型してそ
の後に取り出して脱型する際に下型に衝突しない幅にし
であるから、砂中子を下ビンで押し上げ離型して、その
後に横に取り出す際には、砂中子の断面積がもつとも太
くなる箇所およびその近傍は、砂中子のその他の部分と
ともに一体にして、下型本体に触れることなく取り出す
ことができる。The width of the insert should be such that the part where the cross-sectional area of the sand core becomes thicker and the vicinity thereof will not collide with the lower mold when the sand core is pushed up with the lower bin and released from the mold, and then taken out and demolded. Therefore, when the sand core is pushed up with the lower bottle and released from the mold, and then taken out laterally, the area where the cross-sectional area of the sand core becomes thicker and the vicinity thereof will be affected along with the other parts of the sand core. It can be taken out without touching the lower mold body.
この場合の上型の上下動ストロークは、砂中子の断面積
がもっとも太くなる箇所の高さよりも短い距離で済む。In this case, the vertical movement stroke of the upper die can be made by a distance shorter than the height of the part where the cross-sectional area of the sand core is the largest.
したがって、これまで高さの低い鋳型を成型してきた上
型の上下動ストロークの短い成型機を用いても、自動車
のディファレンシャルハウジング鋳造用鋳型の砂中子の
ように、部分毎の断面積の差が大きい砂中子をも成型す
ることができる。Therefore, even if a molding machine with a short vertical stroke of the upper mold, which has been used to mold molds with a low height, is used, the difference in cross-sectional area of each part, such as the sand core of a mold for casting an automobile differential housing, can be reduced. It is also possible to mold large sand cores.
（発明の効果）
本発明の中子成型用金型は、部分毎の断面積の差が大き
く長大な砂中子の成型用金型であって、その砂中子の断
面積がもつとも太くなる箇所およびその近傍を横抜き分
割金型とされているから、これまで高さの低い鋳型を成
型してきた上型の上下動ストロークの短い成型機を用い
ても、部分毎の断面積の差が大きい砂中子をも成型する
ことができるという利点があって、本発明は産業の発達
に寄与するところ極めて大なるものがある。(Effects of the Invention) The mold for molding the core of the present invention is a mold for molding a long sand core with a large difference in cross-sectional area between parts, and the sand core becomes thicker as the cross-sectional area increases. Since the part and its vicinity are made into a split mold with horizontal punching, even if a molding machine with a short vertical stroke of the upper mold, which has traditionally been used to mold low-height molds, is used, the difference in cross-sectional area of each part can be reduced. The present invention has the advantage that even large sand cores can be molded, and the present invention greatly contributes to the development of industry.
１１２．下型、２．、、入子； ３９８．引抜き用エヤーシリンダー； ４６１．転倒用エヤーシリンダー 112. Lower mold, 2. ,, nest; 398. Air cylinder for extraction; 461. Air cylinder for falling
Claims (1)
であって、その砂中子の断面積がもっとも太くなる箇所
およびその近傍を横抜き分割金型としたことを特徴とす
る中子成型用金型。This is a mold for molding a long sand core with large differences in cross-sectional area from part to part, and is characterized in that the part where the cross-sectional area of the sand core is the thickest and the vicinity thereof are divided into horizontally punched molds. A mold for molding the core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32299889A JPH03184652A (en) | 1989-12-13 | 1989-12-13 | Metallic mold for forming core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32299889A JPH03184652A (en) | 1989-12-13 | 1989-12-13 | Metallic mold for forming core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03184652A true JPH03184652A (en) | 1991-08-12 |
Family
ID=18149997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32299889A Pending JPH03184652A (en) | 1989-12-13 | 1989-12-13 | Metallic mold for forming core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03184652A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102228958A (en) * | 2011-07-01 | 2011-11-02 | 满城县永红铸造机械有限公司 | Core feeding machine |
| CN109590435A (en) * | 2019-01-17 | 2019-04-09 | 重庆卡森科技有限公司 | A kind of casting technique for heavy truck automobile differential shell |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01237066A (en) * | 1988-03-17 | 1989-09-21 | Honda Motor Co Ltd | Casting die |
-
1989
- 1989-12-13 JP JP32299889A patent/JPH03184652A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01237066A (en) * | 1988-03-17 | 1989-09-21 | Honda Motor Co Ltd | Casting die |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102228958A (en) * | 2011-07-01 | 2011-11-02 | 满城县永红铸造机械有限公司 | Core feeding machine |
| CN109590435A (en) * | 2019-01-17 | 2019-04-09 | 重庆卡森科技有限公司 | A kind of casting technique for heavy truck automobile differential shell |
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