JPH078425B2 - Casting equipment - Google Patents
Casting equipmentInfo
- Publication number
- JPH078425B2 JPH078425B2 JP7794787A JP7794787A JPH078425B2 JP H078425 B2 JPH078425 B2 JP H078425B2 JP 7794787 A JP7794787 A JP 7794787A JP 7794787 A JP7794787 A JP 7794787A JP H078425 B2 JPH078425 B2 JP H078425B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- water supply
- supply sleeve
- peripheral surface
- plunger
- 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
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 A.発明の目的 （１） 産業上の利用分野 本発明は鋳造装置、特に、軸線を上下方向に向けた給湯
スリーブの上部を、鋳型のキャビティに連通し、上端面
に加圧チップを突設したプランジャを前記給湯スリーブ
に摺合し、前記給湯スリーブに、それの上部から溶湯を
供給するようにしたものゝ改良に関する。DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Field of Industrial Application The present invention relates to a casting apparatus, and more particularly, to the upper end surface of a hot water supply sleeve having its axis oriented in the up-down direction in communication with the cavity of the mold. The present invention relates to an improvement in which a plunger having a pressurizing tip projecting thereon is slid on the hot water supply sleeve and the molten metal is supplied to the hot water supply sleeve from above.
（２） 従来の技術 従来、この種装置においては、湯温による給湯スリーブ
の損傷を防止するため、給湯スリーブに冷却機構を設
け、また加圧チップ外周面および給湯スリーブ内周面間
の間隔を比較的狭く設定している。(2) Conventional Technology Conventionally, in this type of device, in order to prevent damage to the hot water supply sleeve due to the hot water temperature, a cooling mechanism is provided in the hot water supply sleeve, and the space between the pressurizing tip outer peripheral surface and the hot water supply sleeve inner peripheral surface is set. It is set relatively narrow.
（３） 発明が解決しようとする問題点 給湯スリーブに供給された溶湯は、その給湯スリーブお
よびプランジャにより冷却されるため、給湯スリーブ内
には、その内周面ならびにプランジャ頂面および外周面
を覆う凝固膜が形成され、それら凝固膜は上端を開放し
た円筒体を構成する。(3) Problems to be Solved by the Invention Since the molten metal supplied to the hot water supply sleeve is cooled by the hot water supply sleeve and the plunger, the hot water supply sleeve covers the inner peripheral surface and the plunger top surface and outer peripheral surface. A coagulation film is formed, and the coagulation film forms a cylindrical body having an open upper end.
この場合、前記冷却機構は、その冷却機能が給湯スリー
ブの上部および下部間で均一になるように構成されてお
り、また給湯スリーブの下部側に存する溶湯は、上部側
に存する溶湯よりも早期に供給されて降温が進むため、
前記凝固膜よりなる円筒体の周壁肉厚は上部から下部に
向けて漸増する。また前記円筒体の底壁外周部肉厚は、
加圧チップ外周面および給湯スリーブ内周面間の間隔が
狭いことに起因してその間隔を埋めるように厚く形成さ
れる。In this case, the cooling mechanism is configured so that its cooling function is uniform between the upper portion and the lower portion of the hot water supply sleeve, and the molten metal on the lower side of the hot water supply sleeve is earlier than the molten metal on the upper side. As it is supplied and the temperature goes down,
The peripheral wall thickness of the cylindrical body made of the solidified film gradually increases from the upper part to the lower part. The thickness of the outer peripheral portion of the bottom wall of the cylindrical body is
Due to the narrow space between the outer peripheral surface of the pressure tip and the inner peripheral surface of the hot water supply sleeve, it is formed thick so as to fill the space.
この円筒体は、プランジャを上昇させて、溶湯をキャビ
ティに充填する際、プランジャにより押上げられて給湯
スリーブ上方の鋳型の一部に衝合することにより、上部
側より逐次破壊されるが、キャビティへの溶湯充填終了
時には円筒体の下部側が鋳型とプランジャとの間に位置
することになるため、その下部側の肉厚が厚いことに起
因して、それを破壊するためにプランジャの上昇速度が
緩慢となる。その結果、キャビティへの溶湯の充填後、
その溶湯の圧力を短時間のうちに上昇させることができ
ず、鋳造能率の低下を来たし、また鋳物の品質にも悪影
響を与えるといった問題を生じる。When the plunger is lifted and the molten metal is filled in the cavity, the cylindrical body is pushed up by the plunger and abuts against a part of the mold above the hot water supply sleeve, so that it is sequentially destroyed from the upper side. At the end of filling the molten metal into the cylinder, the lower side of the cylinder will be located between the mold and the plunger.Thus, due to the thick wall on the lower side, the rising speed of the plunger must be increased to destroy it. Be slow. As a result, after filling the cavity with molten metal,
There is a problem that the pressure of the molten metal cannot be increased in a short time, the casting efficiency is lowered, and the quality of the casting is adversely affected.
本発明は上記問題点を解決し得る前記鋳造装置を提供す
ることを目的とする。It is an object of the present invention to provide the casting device which can solve the above problems.
B.発明の構成 （１） 問題点を解決するための手段 本発明は、前記給湯スリーブに、それの上部から下部に
向って冷却機能が漸減する冷却機構を設け、前記加圧チ
ップ外周面および前記給湯スリーブ内周面間の間隔を、
前記給湯スリーブへの溶湯の供給により前記加圧チップ
外周面および前記給湯スリーブ内周面に形成される凝固
膜の厚さの和よりも広く設定したことを特徴とする。B. Configuration of the Invention (1) Means for Solving the Problems In the present invention, the hot water supply sleeve is provided with a cooling mechanism in which the cooling function gradually decreases from the upper part to the lower part of the hot water supply sleeve. The interval between the inner peripheral surface of the hot water supply sleeve,
It is characterized in that it is set to be wider than the sum of the thicknesses of the solidified films formed on the outer peripheral surface of the pressure tip and the inner peripheral surface of the hot water supply sleeve by supplying the molten metal to the hot water supply sleeve.
（２） 作用 前記のように構成すると、給湯スリーブの温度が、その
上部より下部に向って上昇傾向となっているので、給湯
スリーブ内周面に形成される凝固膜の厚さが全体に亘っ
て略均一で、且つ薄くなる。また、プランジャの加圧チ
ップ頂面および外周面に形成される凝固膜も、給湯スリ
ーブ側からの冷却作用が少ないので同様に薄くなり、し
かもそれら凝固膜は前記外周面およびプランジャ内周面
間の間隔を埋めることがない。(2) Operation With the above configuration, the temperature of the hot water supply sleeve tends to rise from the upper part to the lower part, so that the thickness of the solidified film formed on the inner peripheral surface of the hot water supply sleeve is uniform over the entire surface. To be substantially uniform and thin. Further, the solidified film formed on the top surface and the outer peripheral surface of the pressure tip of the plunger is also thin because the cooling effect from the hot water supply sleeve side is small, and the solidified film is formed between the outer peripheral surface and the inner peripheral surface of the plunger. Does not fill the space.
その結果、前記凝固膜により構成される円筒体が薄肉で
脆弱になるので、キャビティへの溶湯の充填後、前記円
筒体の破壊を容易に行ってプランジャを迅速に上昇さ
せ、これにより前記溶湯の圧力を短時間のうちに上昇さ
せることができる。As a result, since the cylinder formed by the solidified film becomes thin and fragile, after filling the cavity with the molten metal, the cylindrical body is easily broken and the plunger is quickly raised, whereby the molten metal The pressure can be raised in a short time.
（３） 実施例 第１図は鋳造装置Ｄを示し、その鋳型としての金型Ｍ
は、昇降自在の上型１と、その下方に配設された固定の
下型２とよりなり、それら上、下型1,2の協働で、湯溜
り３と、鋳物成形用キャビティ４と、それらを連通する
ランナ５とが画成される。下型２の一端部に、軸線を上
下方向に向けて上端を湯溜り３に連通させた給湯スリー
ブ６が配設され、その給湯スリーブ６に、上端面に加圧
チップ7aを突設したプランジャ７が摺合される。また、
下型２に、ホッパ８を持つ給湯路９が湯溜り３に連通す
るように設けられ、その給湯路９に、それを開閉するシ
ールプランジャ10が摺合される。11はシールプランジャ
10の作動シリンダである。(3) Example FIG. 1 shows a casting apparatus D, and a mold M as a mold thereof.
Is composed of an upper mold 1 which can be raised and lowered and a fixed lower mold 2 which is arranged below the upper mold 1, and the upper and lower molds 1 and 2 cooperate with each other to form a basin 3 and a casting molding cavity 4. , And a runner 5 that connects them. At one end of the lower mold 2, there is provided a hot water supply sleeve 6 whose upper end communicates with the hot water reservoir 3 with its axis oriented in the up-down direction. The hot water supply sleeve 6 is provided with a pressure tip 7a protruding from the upper end surface thereof. 7 are slid together. Also,
A hot water supply passage 9 having a hopper 8 is provided on the lower mold 2 so as to communicate with the hot water reservoir 3, and a seal plunger 10 for opening and closing the hot water supply passage 9 is slid on the hot water supply passage 9. 11 is a seal plunger
10 working cylinders.
給湯スリーブ６は、内筒6aと、それに嵌着される外筒6b
とより構成され、その外筒6bに冷却機構Ｃが設けられ
る。その冷却機構Ｃは、外筒6b外周面と協働して複数段
の冷却水路121〜127を形成する複数の互いに独立した環
状溝13を有する冷却スリーブ14と、各冷却水路121〜127
に接続された給排水管15と、それら給排水管15に接続さ
れた冷却水供給源16とより構成される。The hot water supply sleeve 6 includes an inner cylinder 6a and an outer cylinder 6b fitted therein.
The cooling mechanism C is provided on the outer cylinder 6b. The cooling mechanism C includes a cooling sleeve 14 having a plurality of independent annular grooves 13 that form a plurality of stages of cooling water channels 12 1 to 12 7 in cooperation with the outer peripheral surface of the outer cylinder 6b, and the cooling water channels 12 1 to 12 1 . 12 7
And a cooling water supply source 16 connected to the water supply / drain pipes 15.
相隣る冷却水路121,122…126,127の間隔は、給湯スリー
ブ６の上部から下部に向って漸増するようになってお
り、したがって、各間隔についてd1＜d2＜d3＜d4＜d5＜
d6の関係が成立する。その結果、冷却機構Ｃの冷却機能
は給湯スリーブ６の上部から下部に向い漸減し、これに
より給湯スリーブ６の温度をその上部より下部に向って
上昇傾向に保つようになっている。The intervals between the adjacent cooling water channels 12 1 , 12 2 ... 12 6 and 12 7 are designed to gradually increase from the upper part to the lower part of the hot water supply sleeve 6, and therefore d 1 <d 2 <d for each interval. 3 <d 4 <d 5 <
The relationship of d 6 is established. As a result, the cooling function of the cooling mechanism C gradually decreases from the upper part of the hot water supply sleeve 6 to the lower part thereof, whereby the temperature of the hot water supply sleeve 6 is maintained to increase from the upper part to the lower part.
加圧チップ7a外周面および給湯スリーブ６内周面間の間
隔ｄは、給湯スリーブ６への給湯の供給により加圧チッ
プ7a外周面および給湯スリーブ６内周面に形成される凝
固膜の厚さよりも広く設定されている。The distance d between the outer peripheral surface of the pressure tip 7a and the inner peripheral surface of the hot water supply sleeve 6 is determined by the thickness of the solidified film formed on the outer peripheral surface of the pressure tip 7a and the inner peripheral surface of the hot water supply sleeve 6 by supplying hot water to the hot water supply sleeve 6. Is also widely set.
第１図中、S1,S2は給湯スリーブ６の上部および下部の
温度を測定する温度センサである。In FIG. 1, S 1 and S 2 are temperature sensors that measure the temperatures of the upper and lower portions of the hot water supply sleeve 6.
鋳造時には、冷却機構Ｃにより供給スリーブ６を冷却
し、またシールプランジャ10を収縮させて給湯路９を開
放し、さらにプランジャ７を下降した状態で、ホッパ８
より給湯路９を通じて湯溜り３を介し給湯プランジャ６
に溶湯を供給し、次いでシールプランジャ10をその先端
が湯溜り３に至るまで伸長させて給湯路９を閉鎖する。During casting, the supply sleeve 6 is cooled by the cooling mechanism C, the seal plunger 10 is contracted to open the hot water supply passage 9, and the plunger 7 is lowered.
Hot water supply plunger 9 through hot water reservoir 3 through hot water supply passage 9
Then, the seal plunger 10 is extended until its tip reaches the pool 3, and the hot water supply passage 9 is closed.
第２図ｘ点よりｙ点までプランジャ７を上昇させ、溶湯
をランナ５を通じてキャビティ４に充填し、引続き第２
図ｙ点より、z1点までプランジャ７を上昇させて溶湯を
加圧し、この加圧下で溶湯を完全凝固させる。As shown in FIG. 2, the plunger 7 is raised from the point x to the point y, the molten metal is filled into the cavity 4 through the runner 5, and the second step is continued.
From point y in the figure, the plunger 7 is raised to point z 1 to pressurize the molten metal, and under this pressure, the molten metal is completely solidified.
前記給湯スリーブ６への溶湯の供給により、給湯スリー
ブ６内周面ならびにプランジャ７の加圧チップ7a頂面お
よび外周面にそれぞれ凝固膜f1〜f3が形成される。By supplying the molten metal to the hot water supply sleeve 6, solidified films f 1 to f 3 are formed on the inner peripheral surface of the hot water supply sleeve 6 and the top surface and outer peripheral surface of the pressing tip 7a of the plunger 7, respectively.
この場合、冷却機構Ｃの冷却機能が給湯スリーブ６の上
部から下部に向って漸減し、その結果、給湯スリーブ６
の温度がその上部より下部に向って上昇傾向となってい
るので、給湯スリーブ６内周面に形成される凝固膜f1の
厚さが全体に亘って略均一で且つ薄くなる。またプラン
ジャ７の加圧チップ7a頂面および外周面に形成される凝
固膜f2,f3も、給湯スリーブ６からの冷却作用が少ない
ので同様に薄くなり、しかもそれら凝固膜f1,f3の厚さ
の和は前記外周面およびプランジャ７内周面間の間隔ｄ
よりも薄く、したがってそれら凝固膜f1,f3が間隔ｄを
埋めることはない。In this case, the cooling function of the cooling mechanism C gradually decreases from the upper part of the hot water supply sleeve 6 to the lower part, and as a result, the hot water supply sleeve 6
Since the temperature of the solidified film f 1 tends to increase from the upper part toward the lower part, the thickness of the solidified film f 1 formed on the inner peripheral surface of the hot water supply sleeve 6 is substantially uniform and thin throughout. Further, the solidified films f 2 and f 3 formed on the top surface and the outer peripheral surface of the pressure tip 7a of the plunger 7 are also thin because the cooling effect from the hot water supply sleeve 6 is small, and the solidified films f 1 and f 3 are also formed. The sum of the thicknesses is the distance d between the outer peripheral surface and the inner peripheral surface of the plunger 7.
Thinner, and therefore the solidified films f 1 and f 3 do not fill the space d.
その結果、前記凝固膜f1〜f3により構成される円筒体Ｆ
が薄肉で脆弱になるので、キャビティ４への溶湯の充填
後、前記円筒体Ｆの破壊を容易に行ってプランジャ７を
迅速に上昇させ、これにより溶湯の圧力を短時間のうち
に上昇させることができる。As a result, the cylindrical body F composed of the solidified films f 1 to f 3
Is thin and fragile, so that after the molten metal is filled in the cavity 4, the cylindrical body F can be easily broken to quickly raise the plunger 7, thereby increasing the pressure of the molten metal in a short time. You can
これは第２図より、ｙ点からz1点までのプランジャ７の
変位に要する時間T2−T1が短いことより明らかである
が、前記従来装置では、前記同様のプランジャの変位、
即ち、第２図ｙ点からz2点までの変位を得るためにT3−
T1（T3》T2）といった長時間を要する。この時間T3は溶
湯が略完全凝固する時間に相当するので、加圧に伴う鋳
造品質の向上効果は僅少となる。This is clear from FIG. 2 that the time T 2 −T 1 required for the displacement of the plunger 7 from the point y to the point z 1 is short.
That, T 3 in order to obtain the displacement from the second FIG y point to z 2 points -
It takes a long time such as T 1 (T 3 >> T 2 ). Since this time T 3 corresponds to the time during which the molten metal is almost completely solidified, the effect of improving the casting quality due to pressurization is negligible.
なお、前記冷却水路は螺旋状でもよい。The cooling water passage may have a spiral shape.
C.発明の効果 本発明によれば、給湯スリーブの冷却機構の構成ならび
にプランジャの加圧チップ外周面および給湯スリーブ内
周面間の間隔をそれぞれ前記のように特定することによ
り、キャビティへの溶湯の充填後、その溶湯の圧力を短
時間のうちに上昇させて鋳造能率を向上させ、また鋳物
の品質を良好にすることができる。C. Effect of the Invention According to the present invention, the molten metal in the cavity is determined by specifying the configuration of the cooling mechanism of the hot water supply sleeve and the interval between the outer peripheral surface of the pressure tip of the plunger and the inner peripheral surface of the hot water supply sleeve as described above. After filling, the pressure of the molten metal can be increased within a short time to improve the casting efficiency and improve the quality of the casting.
第１図は本発明の一実施例の縦断正面図、第２図は時間
とプランジャの変位との関係を示すグラフである。 Ｃ……冷却機構、ｄ……間隔、f1〜f3……凝固膜、Ｍ…
…鋳型としての金型、 ４……キャビティ、６……給湯スリーブ、７……プラン
ジャ、7a……加圧チップFIG. 1 is a vertical front view of an embodiment of the present invention, and FIG. 2 is a graph showing the relationship between time and displacement of the plunger. C ...... cooling mechanism, d ...... interval, f 1 ~f 3 ...... clotting film, M ...
... Mold as mold, 4 ... Cavity, 6 ... Hot water supply sleeve, 7 ... Plunger, 7a ... Pressure tip
───────────────────────────────────────────────────── フロントページの続き (72)発明者 浜島 利男 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 (56)参考文献 特開 昭57−100862（ＪＰ，Ａ) 特公 昭58−54907（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshio Hamashima 1-10-1 Shin-Sayama, Sayama City, Saitama Prefecture, within Honda Engineering Co., Ltd. (56) References JP-A-57-100862 (JP, A) JP 58-54907 (JP, B2)
Claims (1)
部を、鋳型のキャビティに連通し、上端面に加圧チップ
を突設したプランジャを前記給湯スリーブに摺合し、前
記給湯スリーブに、それの上部から溶湯を供給するよう
にした鋳造装置において、前記給湯スリーブに、それの
上部から下部に向って冷却機能が漸減する冷却機構を設
け、前記加圧チップ外周面および前記給湯スリーブ内周
面間の間隔を、前記給湯スリーブへの溶湯の供給により
前記加圧チップ外周面および前記給湯スリーブ内周面に
形成される凝固膜の厚さの和よりも広く設定したことを
特徴とする鋳造装置。1. An upper part of a hot water supply sleeve whose axis is oriented in the vertical direction is communicated with a cavity of a mold, and a plunger having a pressure tip projecting from an upper end surface is slid on the hot water supply sleeve, and the hot water supply sleeve is provided with the plunger. In the casting apparatus adapted to supply the molten metal from the upper part of the above, the hot water supply sleeve is provided with a cooling mechanism whose cooling function gradually decreases from the upper part to the lower part thereof, and the outer peripheral surface of the pressurizing tip and the inner peripheral surface of the hot water supply sleeve are provided. A casting apparatus characterized in that an interval between them is set to be wider than a sum of thicknesses of solidified films formed on the outer peripheral surface of the pressure tip and the inner peripheral surface of the hot water supply sleeve by supplying the molten metal to the hot water supply sleeve. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7794787A JPH078425B2 (en) | 1987-03-31 | 1987-03-31 | Casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7794787A JPH078425B2 (en) | 1987-03-31 | 1987-03-31 | Casting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63242457A JPS63242457A (en) | 1988-10-07 |
| JPH078425B2 true JPH078425B2 (en) | 1995-02-01 |
Family
ID=13648226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7794787A Expired - Fee Related JPH078425B2 (en) | 1987-03-31 | 1987-03-31 | Casting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH078425B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0677960U (en) * | 1993-04-16 | 1994-11-01 | 宇部興産株式会社 | Cooling device for vertical casting sleeve |
-
1987
- 1987-03-31 JP JP7794787A patent/JPH078425B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63242457A (en) | 1988-10-07 |
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