JPS6261755A - Structure for riser hole for metallic mold - Google Patents
Structure for riser hole for metallic moldInfo
- Publication number
- JPS6261755A JPS6261755A JP60200335A JP20033585A JPS6261755A JP S6261755 A JPS6261755 A JP S6261755A JP 60200335 A JP60200335 A JP 60200335A JP 20033585 A JP20033585 A JP 20033585A JP S6261755 A JPS6261755 A JP S6261755A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- hole
- riser
- insulating material
- parting
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
Abstract
Description
【発明の詳細な説明】
（Ｍ業上の利用分野）
本発明は、軽金属等を鋳造する金型に関し、特に局部的
な厚肉部に溶湯を補給するために用いる押湯穴の構造に
関するものである。[Detailed Description of the Invention] (Field of Application in the M Industry) The present invention relates to a mold for casting light metals, etc., and particularly relates to the structure of a feeder hole used to supply molten metal to a locally thick walled part. It is.
（従来の技術）
従来における押湯穴の構造として、第２図および第３図
に示す構造のものがあった。(Prior Art) Conventional feeder holes have structures shown in FIGS. 2 and 3.
即ち、水平状の成型空間ａの上面側あるいは下面側に局
部的な厚肉部ｂ−ｃを有する場合、これら厚肉部ｂ−ｃ
の対面側に位置する成型空間ａ”ａの下面側あるいは上
面側に、所定の容量を有する円柱状の押湯穴ｄ−ｅを小
径に絞ったネック部、つまり、堰ｆ−ｇを介して連通さ
せる構造であった。That is, when there are local thick parts b-c on the upper surface side or lower surface side of the horizontal molding space a, these thick parts b-c
A cylindrical feeder hole d having a predetermined capacity is connected to the lower or upper surface side of the molding space a"a located on the opposite side of the It was a structure that allowed for communication.
（発明が解決しようとする問題点）
上記従来の構造のものは、押湯穴ｄ−ｅの基部を絞った
ネック部をなす小径の堰ｆ−ｇを介して成型空間ａ’ａ
に連通させているため、このままでは溶湯の凝固後に離
型が困雛になる。(Problems to be Solved by the Invention) In the conventional structure described above, the molding space a'a is
Since the molten metal is in communication with the molten metal, it will be difficult to release it from the mold after it solidifies.
このため従来は、押湯穴部位に必ず型の割り面（ア）・
（イ）を位置させる必要があり、押湯の位置が多い時
には複数の型割り構造にせねばならず、このため型が複
雑になる６
また、単数の型別構造の場合には、望む部位に押湯を設
けることができないため、鋳造方案に手数を要する等の
欠点があった。For this reason, conventionally, the parting surface (A) of the mold was always placed at the feeder hole.
(b), and when there are many positions for the riser, it is necessary to have a structure with multiple mold divisions, which makes the mold complicated. Since a riser cannot be provided, there are drawbacks such as the need for a complicated casting method.
本発明は、上記欠点を解消した新規な押湯穴の構造を得
ることを目的とする。The object of the present invention is to obtain a new feeder hole structure that eliminates the above-mentioned drawbacks.
（問題点を解決するための手段）
本発明は、上記目的を達成するために以下の如く構成し
たものである。(Means for Solving the Problems) In order to achieve the above object, the present invention is constructed as follows.
即ち、成型空間に連通ずる押湯穴を型の分割面に対して
直交方向に延出形成し、かつその形状を型の抜き方向側
が小断面積となる抜勾配を有する形状に形成し、該押湯
穴の小断面積側を耐熱性断熱資材により保温する構成に
したものである。That is, the feeder hole communicating with the molding space is formed to extend in a direction perpendicular to the dividing surface of the mold, and its shape is formed to have a draft such that the side in the direction of mold removal has a small cross-sectional area. This structure is such that the small cross-sectional area side of the feeder hole is kept warm using a heat-resistant insulating material.
（作用）
本発明は上記構成にしたものであるから、押湯穴内に溶
湯が充てんされた押湯は、型の分割面に対して直交方向
に延出しかつ型の抜き方向に抜は勾配を有することにな
る。(Function) Since the present invention has the above configuration, the feeder whose feeder hole is filled with molten metal extends in a direction perpendicular to the dividing plane of the mold and has a drawing slope in the direction of mold removal. will have.
しかも押湯の先端部はその外周部が保温されているので
、その基部に比し小断面積となっていても該基部と同等
かあるいはそれ以上の時間に亘って溶融状態に保持され
ることになる。Moreover, since the outer periphery of the tip of the feeder is kept warm, even though the cross-sectional area is smaller than that of the base, it remains molten for a period of time equal to or longer than that of the base. become.
（実施例） 以下、本発明の実施例を図面に基いて説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の実施例を示す要部断面図である。FIG. 1 is a sectional view of a main part showing an embodiment of the present invention.
１は上下方向に開型する水平割りした金型であり、上型
２と下型３とからなる。上記金型１内には凹状の成型空
間４を形成する。Reference numeral 1 denotes a horizontally split mold that opens in the vertical direction, and consists of an upper mold 2 and a lower mold 3. A concave molding space 4 is formed in the mold 1.
上記成型空間４の底部４ａには、第１図において、その
左部に上方に突出する厚肉部４ｂを、その右部に下方に
突出する厚肉部４ｃをそれぞれ有する。In FIG. 1, the bottom 4a of the molding space 4 has a thick wall portion 4b projecting upward on its left side and a thick wall portion 4c projecting downward on its right side.
そして、下型３の上記厚肉部４ｂに対応する部位に、上
方に向かって拡開する断面テーパー状の抜は勾配を有す
る上がり押湯穴（以下押湯穴という）５を形成する。Then, an upward feeder hole (hereinafter referred to as feeder hole) 5 is formed in a portion of the lower die 3 corresponding to the thick walled portion 4b, and has a tapered cross-section and a slope that expands upward.
この押湯穴５は、その上部５ａを大径でもって成型空間
４の底部に連通させ、その小径側下部５ｂをセラミック
からなる耐熱性断熱資材６により形成してなる。The feeder hole 5 has a large diameter upper portion 5a communicating with the bottom of the molding space 4, and a smaller diameter lower portion 5b formed of a heat-resistant heat insulating material 6 made of ceramic.
この耐熱性断熱資材６は、押え金具７を介して下型３の
下面側から嵌挿係止する。This heat-resistant heat insulating material 6 is inserted and locked from the lower surface side of the lower mold 3 via a presser metal fitting 7.
また、上型２の上記厚肉部４ｃに対応する部位に、下方
に向かって拡開する断面テーパー状の抜は勾配を有する
下がり押湯穴（以下押湯穴という）８を形成する。Further, a descending feeder hole (hereinafter referred to as feeder hole) 8 is formed in a portion of the upper mold 2 corresponding to the thick walled portion 4c, and has a tapered cross-section and a slope that expands downward.
この押湯穴８は、その下部８ａを大径でもって成型空間
４の底部に連通させ、その小径側上部８ｂをセラミック
からなる耐熱性断熱資材９により形成してなる。The feeder hole 8 has a large diameter lower part 8a communicating with the bottom of the molding space 4, and an upper part 8b on the small diameter side formed of a heat-resistant heat insulating material 9 made of ceramic.
この耐熱性断熱資材９は、押え金具１０を介して上型２
の上面側から嵌挿係止する。This heat-resistant heat insulating material 9 is transferred to the upper mold 2 through the presser metal fitting 10.
Insert and lock from the top side.
なお、図中１１は湯口穴、ｌｌａは湯道穴、１２・１２
ａは押湯穴、１３は上型ベース、１４は下型ベースであ
る。In addition, in the figure, 11 is the sprue hole, lla is the runner hole, and 12.12
a is a feeder hole, 13 is an upper die base, and 14 is a lower die base.
次に上記実施例の作用について説明する。Next, the operation of the above embodiment will be explained.
湯口穴１１から供給された湯は、湯道穴１１ａを通り、
押湯穴１２ａ・成型空間４・各押湯穴５・８・１２に充
てんされることになる。The hot water supplied from the sprue hole 11 passes through the sprue hole 11a,
The feeder hole 12a, the molding space 4, and each feeder hole 5, 8, and 12 are filled with it.
この状態で放冷すると成型空間４内に充てんされた湯は
、まず薄肉部４ｄが、次いで厚肉部４ｂ・４ｃおよび押
湯穴５・８・１２・１２ａ部が凝固して行くことになる
。When left to cool in this state, the hot water filled in the molding space 4 will solidify first in the thin wall portion 4d, then in the thick wall portions 4b and 4c and feeder holes 5, 8, 12, and 12a. .
この場合、各押湯穴５・８はその下部５ｂ・上部８ｂが
小断面積になっているが、この部は耐熱性断熱資材６・
９により形成され、保温されているので、他部よりも凝
固が遅くなる。In this case, the lower part 5b and upper part 8b of each feeder hole 5 and 8 have a small cross-sectional area, but these parts are made of heat-resistant insulation material 6.
9 and is kept warm, solidification is slower than other parts.
このため、各厚肉部４ｂ・４ｃの凝固収縮に対し、これ
らの部に各押湯穴５・８から湯が補給されることになる
。Therefore, in response to solidification and shrinkage of the thick portions 4b and 4c, hot water is supplied to these portions from the respective feeder holes 5 and 8.
次に、成型空間４内および各押湯穴５・８・１２・１２
． ａ内の湯が凝固した後、上型２を上方に移動すれば
、上型２側の押湯穴８は上方に向かってテーパー状に小
断面形状となって抜は勾配を有しているため、上型２は
鋳造製品に対して円滑に離型されることになる。Next, inside the molding space 4 and each feeder hole 5, 8, 12, 12
．． When the upper mold 2 is moved upward after the hot water in a has solidified, the feeder hole 8 on the upper mold 2 side tapers upward to have a small cross-sectional shape and has a draft slope. Therefore, the upper mold 2 can be smoothly released from the cast product.
同様に、下型３側の押湯穴５は下方に向かってテーパー
状に小断面形状となって抜は勾配を有しているため、鋳
造製品は下型に対して円滑に離型されることになる。Similarly, the feeder hole 5 on the lower mold 3 side has a small cross-sectional shape that tapers downward and has a draft slope, so that the cast product can be smoothly released from the lower mold. It turns out.
（発明の効果）
以上の説明から明らかな如く、本発明は押湯穴が型の割
り面に対して直交方向に延出し、かっ型の抜き方向に抜
勾配を有しているため、押湯穴部に型の割り面を設けな
くても円滑な離型が可能となる。(Effects of the Invention) As is clear from the above description, the feeder hole of the present invention extends in a direction perpendicular to the dividing surface of the mold and has a draft in the direction of cutting out the bracket mold. Smooth release from the mold is possible without providing a split surface of the mold in the hole.
しかも、押湯穴の小断面積側は、耐熱性断熱資材により
保温されているので、この部の凝固が他部よりも遅延す
ることになり、押湯作用は従来と同様に行なわれること
になる。Moreover, since the small cross-sectional area side of the feeder hole is insulated with heat-resistant insulation material, solidification in this area is delayed compared to other areas, and the feeder action continues as before. Become.
従って本発明は、型が簡素になるとともに鋳造方案の設
定が容易になる効果を奏する。Therefore, the present invention has the effect of simplifying the mold and making it easier to set the casting plan.
なお、本発明は左右方向に開型する左右側した金型にも
適用することができる。Note that the present invention can also be applied to a left-right mold that opens in the left-right direction.
第１図は本発明の実施例を示す要部断面図、第２〜３図
は従来例を示す要部断面説明図である。
１：金型、２：上型、３：下型、４：成型空間、４ａ：
底部、４ｂ・４ｃ：厚肉部、５：上がり押湯穴５ａ：上
部、５ｂ：下部、６・９：耐熱性断熱資材、７・１０：
押え金具、８：下がり押湯穴、８ａ：下部、８ｂ：上部
、１１：湯口穴、１２・１２ａ：押湯穴、１３：上型ベ
ース、１４：下型ベース。
出願代理人 松 本 久
手続補正書（方式）
昭和６０年１２月９日FIG. 1 is a cross-sectional view of a main part showing an embodiment of the present invention, and FIGS. 2 and 3 are cross-sectional explanatory views of a main part showing a conventional example. 1: Mold, 2: Upper mold, 3: Lower mold, 4: Molding space, 4a:
Bottom, 4b/4c: Thick wall part, 5: Rising feeder hole 5a: Upper, 5b: Lower, 6/9: Heat resistant insulation material, 7/10:
Presser metal fitting, 8: lower feeder hole, 8a: lower part, 8b: upper part, 11: sprue hole, 12/12a: riser hole, 13: upper mold base, 14: lower mold base. Application agent Hisashi Matsumoto Procedural amendment (method) December 9, 1985
Claims (1)
交方向に延出形成し、かつその形状を型の抜き方向側が
小断面積となる抜勾配を有する形状に形成し、該押湯穴
の小断面積側を耐熱性断熱資材により保温したことを特
徴とする金型用押湯穴の構造。1. A feeder hole communicating with the molding space is formed extending in a direction perpendicular to the dividing surface of the mold, and its shape is formed to have a draft such that the side in the direction of mold removal has a small cross-sectional area, and A structure of a feeder hole for a mold, characterized in that the small cross-sectional area side of the feeder hole is kept warm by a heat-resistant insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60200335A JPS6261755A (en) | 1985-09-10 | 1985-09-10 | Structure for riser hole for metallic mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60200335A JPS6261755A (en) | 1985-09-10 | 1985-09-10 | Structure for riser hole for metallic mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6261755A true JPS6261755A (en) | 1987-03-18 |
| JPH05129B2 JPH05129B2 (en) | 1993-01-05 |
Family
ID=16422580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60200335A Granted JPS6261755A (en) | 1985-09-10 | 1985-09-10 | Structure for riser hole for metallic mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6261755A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63303649A (en) * | 1987-06-03 | 1988-12-12 | ロールス・ロイス・ピーエルシー | Manufacture of metallic product and product |
| JPH01317656A (en) * | 1989-05-09 | 1989-12-22 | Toshiba Mach Co Ltd | Ceramic pattern for forming attaching projected part in casting |
| JPH0347640U (en) * | 1989-09-12 | 1991-05-02 | ||
| FR2953745A1 (en) * | 2009-12-16 | 2011-06-17 | C T I F Ct Tech Des Ind De La Fonderie | Device for molding a piece by casting, comprises two parts of mold defining an assembly of molded prints separated from one another for providing a molded piece, where molded prints comprise feed head in which two air frames are integrated |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5178212U (en) * | 1974-12-16 | 1976-06-21 |
-
1985
- 1985-09-10 JP JP60200335A patent/JPS6261755A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5178212U (en) * | 1974-12-16 | 1976-06-21 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63303649A (en) * | 1987-06-03 | 1988-12-12 | ロールス・ロイス・ピーエルシー | Manufacture of metallic product and product |
| JPH01317656A (en) * | 1989-05-09 | 1989-12-22 | Toshiba Mach Co Ltd | Ceramic pattern for forming attaching projected part in casting |
| JPH0569622B2 (en) * | 1989-05-09 | 1993-10-01 | Toshiba Machine Co Ltd | |
| JPH0347640U (en) * | 1989-09-12 | 1991-05-02 | ||
| FR2953745A1 (en) * | 2009-12-16 | 2011-06-17 | C T I F Ct Tech Des Ind De La Fonderie | Device for molding a piece by casting, comprises two parts of mold defining an assembly of molded prints separated from one another for providing a molded piece, where molded prints comprise feed head in which two air frames are integrated |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05129B2 (en) | 1993-01-05 |
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