JPH05129B2 - - Google Patents
Info
- Publication number
- JPH05129B2 JPH05129B2 JP60200335A JP20033585A JPH05129B2 JP H05129 B2 JPH05129 B2 JP H05129B2 JP 60200335 A JP60200335 A JP 60200335A JP 20033585 A JP20033585 A JP 20033585A JP H05129 B2 JPH05129 B2 JP H05129B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- feeder
- feeder hole
- hole
- heat
- 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 - Lifetime
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
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 (Industrial Application Field) 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 localized thick-walled parts. be.
（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つた。(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を小径に絞つたネツク
部、つまり、堰ｆ，ｇを介して連通させる構造で
あつた。 That is, when the horizontal molding space a has locally thickened portions b and c on the upper surface side or lower surface side, the molding space a located on the opposite side of these thickened portions b and c,
The structure was such that cylindrical feeder holes d and e having a predetermined capacity were communicated with the lower or upper surface of a through small-diameter necks, that is, weirs f and g.
（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
を絞つたネツ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難になる。(Problems to be Solved by the Invention) In the conventional structure described above, the bases of the riser holes d and e are connected to the molding spaces a and a through small-diameter weirs f and g that form a narrowed neck. Therefore, if the molten metal remains as it is, 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。 For this reason, in the past, it was necessary to always position the dividing surfaces A and A of the mold at the feeder hole, and when there were many positions of the feeder, a plurality of mold dividing structures had to be used, which made the mold complex.
また、単数の型割構造の場合には、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つた。 In addition, in the case of a single mold split structure, the riser cannot be provided at a desired location, so there are drawbacks such as requiring a lot of effort in the 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、成型空間に連通する押湯穴を金型の分割
面に対して直交方向に延出形成し、かつ該押湯穴
を金型の引き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形成するとともに、該耐熱
性断熱資材を前記金型にその背面側から嵌挿係止
した押え金具の内端部に固定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 the feeder hole has a shape having a draft such that the side in the drawing direction of the mold has a small cross-sectional area. The small cross-sectional area side of the feeder hole is formed of a heat-resistant heat insulating material, and the heat-resistant heat insulating material is fixed to the inner end of a presser fitting that is inserted and locked into the mold from the back side thereof. It is structured as follows.
（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、金型の分割面
に対して直交方向に延出しかつ金型の抜き方向に
抜け勾配を有することになり、金型１は鋳造製品
に対して円滑に離型することになる。(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 surface of the mold and has a draft slope in the direction of removal of the mold. Therefore, the mold 1 can be smoothly released from the cast product.
しかも押湯の先端部はその外周部が耐熱性断熱
資材によつて保温され、その基部に比し小断面積
となつていても該基部と同等かあるいはそれ以上
の時間に亘つて溶融状態に保持されることにな
り、鋳造製品の凝固収縮に対する湯の補給が円滑
に行なわれることになる。 Moreover, the outer periphery of the feeder tip is kept warm by a heat-resistant insulating material, and even though it has a smaller cross-sectional area than the base, it stays in a molten state for a period of time equal to or longer than that of the base. As a result, hot water can be smoothly replenished against the solidification shrinkage of the cast product.
また、上記耐熱性断熱資材は、押え金具を介し
て金型に対して抜き差し可能となり、耐熱性断熱
資材６，９の保守が容易にできるとともに、押湯
穴５，８の高さおよび大きさの変更が容易にな
る。 In addition, the heat-resistant heat-insulating material can be inserted into and removed from the mold via the holding fitting, making maintenance of the heat-resistant heat-insulating materials 6 and 9 easy, and also allowing the height and size of the riser holes 5 and 8 to be adjusted. changes become easier.
（実施例）
以下、本発明の実施例を図面に基いて説明す
る。(Example) Hereinafter, an example of the present invention will be described based on 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、上金型２と下金型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 divided mold that opens in the vertical direction, and consists of an upper mold 2 and a lower mold 3. Above mold 1
A concave molding space 4 is formed inside.
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、下金型３の上記厚肉部４ｂに対応する
部位に、上方に向かつて拡開する断面テーパー状
に抜け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, a rising feeder hole (hereinafter referred to as feeder hole) 5 is formed in a portion of the lower mold 3 corresponding to the thick portion 4b, and has a draft slope with a tapered cross section that widens upward.
この押湯穴５は、その上部５ａを大径でもつて
成型空間４の底部に連通させ、その小径側の下部
５ｂ（小断面積側）をセラミツクからなる耐熱性
断熱資材６により形成してなる。 This feeder hole 5 has a large diameter upper part 5a communicating with the bottom of the molding space 4, and a lower part 5b (smaller cross-sectional area side) on the smaller diameter side is 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の上面
（内端面）に固定し、該押え金具７を下金型３の
下面側（背面側）から嵌合係止して押湯穴５の小
径側に位置決めする。 This heat-resistant heat insulating material 6 is fixed to the upper surface (inner end surface) of the presser metal fitting 7, and the presser metal fitting 7 is fitted and locked from the lower surface side (back side) of the lower mold 3 to form the small diameter of the feeder hole 5. Position on the side.
また、上金型２の上記厚肉部４ｃに対応する部
位に、下方に向かつて拡開する断面テーパー状の
抜け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 having a draft slope with a tapered cross section that widens downward is formed in a portion of the upper mold 2 corresponding to the thick walled portion 4c.
この押湯穴８は、その下部８ａを大径でもつて
成型空間４の底部に連通させ、その小径側上部８
ｂをセラミツ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 that communicates with the bottom of the molding space 4, and an upper part 8a on the small diameter side.
b is made 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の下面
（内端面）に固定し、該押え金具１０を上金型２
の上面側（背面側）から嵌合係止して上記押湯穴
８の小径側に位置決めする。 This heat-resistant heat insulating material 9 is fixed to the lower surface (inner end surface) of the presser metal fitting 10, and the presser metal fitting 10 is fixed to the upper mold 2.
It is fitted and locked from the upper surface side (back side) and positioned on the small diameter side of the feeder hole 8.
なお、図中１１は湯口穴、１１ａは湯道穴、１
２，１２ａは押湯穴、１３は上金型ベース、１４
は下金型ベースである。 In the figure, 11 is the sprue hole, 11a is the runner hole, 1
2, 12a are feeder holes, 13 is the upper mold base, 14
is the bottom mold base.
次に上記実施例の作用・効果について説明す
る。 Next, the functions and effects 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 flows through the sprue hole 11a.
, and is filled into the feeder hole 12a, the molding space 4, and each feeder hole 5, 8, and 12.
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４
ｂ，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 first be applied to the thin-walled portion 4d, then to the thick-walled portion 4d.
b, 4c and feeder holes 5, 8, 12, 12a will solidify.
この場合、各押湯穴５，８はその下部５ｂ、上
部８ｂが小断面積になつているが、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, 8 have a small cross-sectional area, but since these parts are formed with heat-resistant insulation materials 6, 9 and are kept warm, they are more warm than other parts. It also slows down clotting.
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。 For this reason, hot water is replenished from the respective feeder holes 5 and 8 to the thick portions 4b and 4c as they solidify and shrink.
次に、成型空間４内および各押湯穴５，８，１
２，１２ａ内の湯が凝固した後、上金型２を上方
に移動すれば、上金型２側の押湯穴８は上方に向
かつてテーパー状に小断面形状となつて抜け勾配
を有しているため、上金型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, 1
After the hot water in 2 and 12a has solidified, when the upper mold 2 is moved upward, the feeder hole 8 on the upper mold 2 side becomes tapered upward to have a small cross-sectional shape and has a draft. Therefore, the upper mold 2 can be smoothly released from the cast product.
同様に、下金型３側の押湯穴５は下方に向かつ
てテーパー状に小断面形状となつて抜け勾配を有
しているため、鋳造製品は下金型に対して円滑に
離型されることになる。 Similarly, the feeder hole 5 on the lower mold 3 side tapers downward and has a small cross-sectional shape and has a draft slope, so that the cast product can be smoothly released from the lower mold. That will happen.
また、耐熱性断熱資材６，９は、金型１にその
背面側から嵌挿する押え金具７，１０によつて支
持するようにしたので、押湯穴５，８の位置が金
型１の分割部以外であつても該押湯穴５，８の小
径側に容易に配置することができるとともに、耐
熱性断熱資材６，９の保守あるいは押湯の形状お
よび大きさ（高さ）の変更が容易にできる。な
お、本発明は左右方向に開型する左右割した金型
にも適用することができる。 In addition, since the heat-resistant heat insulating materials 6 and 9 are supported by the presser fittings 7 and 10 that are inserted into the mold 1 from the back side, the positions of the feeder holes 5 and 8 are in the mold 1. It can be easily placed on the small diameter side of the feeder holes 5, 8 even if it is not a divided part, and it is also possible to maintain the heat-resistant insulation materials 6, 9 or change the shape and size (height) of the feeder. can be easily done. Note that the present invention can also be applied to a left-right split mold that opens in the left-right direction.
（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
の形成位置を金型の割り面に左右されることな
く、鋳造製品に適した位置および大きさに形成す
ることができるとともに、押湯の機能を良好に発
揮させることができ、金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。(Effects of the Invention) As is clear from the above description, the present invention allows the feeder hole to be formed at a position and size suitable for the cast product without being influenced by the split surface of the mold. At the same time, the function of the riser can be exhibited well, the mold can be simplified, and the casting method can be easily set.
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：上金型、３：下金型、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（小断面積
側）、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（小断面積側）、１１：湯口穴、１２，１２
ａ：押湯穴、１３：上金型ベース、１４：下金型
ベース。
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 part, 5: Rising feeder hole, 5a: Upper part, 5b: Lower part (small (cross-sectional area side), 6, 9: heat-resistant insulation material, 7, 10: presser metal fitting, 8: descending feeder hole, 8a: lower part, 8b: upper part (small cross-sectional area side), 11: sprue hole, 12, 12
a: feeder hole, 13: upper mold base, 14: lower mold base.
Claims (1)
対して直交方向に延出形成し、かつ該押湯穴を金
型の引き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
性断熱資材により形成するとともに、該耐熱性断
熱資材を前記金型にその背面側から嵌挿係止した
押え金具の内端部に固定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 to extend in a direction perpendicular to the dividing surface of the mold, and the feeder hole is formed in a shape having a draft such that the side in the drawing direction of the mold has a small cross-sectional area. and the small cross-sectional area side of the feeder hole is formed of a heat-resistant heat insulating material, and the heat-resistant heat insulating material is fixed to the inner end of a presser fitting that is fitted and locked into the mold from the back side thereof. The structure of the die feeder hole is characterized by:
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 JPS6261755A (en) | 1987-03-18 |
| JPH05129B2 true 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) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2205261B (en) * | 1987-06-03 | 1990-11-14 | Rolls Royce Plc | Method of manufacture and article manufactured thereby |
| 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 | ||
| FR2953745B1 (en) * | 2009-12-16 | 2012-01-13 | C T I F Ct Tech Des Ind De La Fonderie | DEVICE FOR DELAYING THE SOLIDIFICATION OF A MASSELOTTE |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5549877Y2 (en) * | 1974-12-16 | 1980-11-20 |
-
1985
- 1985-09-10 JP JP60200335A patent/JPS6261755A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6261755A (en) | 1987-03-18 |
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