JPH11254118A - Vacuum adjustment device - Google Patents
Vacuum adjustment deviceInfo
- Publication number
- JPH11254118A JPH11254118A JP8494198A JP8494198A JPH11254118A JP H11254118 A JPH11254118 A JP H11254118A JP 8494198 A JP8494198 A JP 8494198A JP 8494198 A JP8494198 A JP 8494198A JP H11254118 A JPH11254118 A JP H11254118A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- degree
- start position
- air opening
- end position
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はダイカストマシン等
の金型内の真空度を調整するための真空度調整装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for adjusting the degree of vacuum in a mold such as a die casting machine.
【０００２】[0002]
【従来の技術】従来の真空度調整装置は特開平６−１７
９０６３号、特開平７−１７１６６５号に示すように、
真空装置は一般的に真空タンクユニットと真空バルブユ
ニットにより構成されている。そして、さらに金型キャ
ビティ内の真空度の精度を高めるため、特開平８−３３
２５８号に開示したように、射出プランジャの位置と連
動させて、真空バルブユニットの開閉時間と開閉のタイ
ミングを調整するようにした。2. Description of the Related Art A conventional vacuum degree adjusting device is disclosed in Japanese Unexamined Patent Publication No.
No. 9063 and JP-A-7-171665,
A vacuum device generally includes a vacuum tank unit and a vacuum valve unit. In order to further improve the accuracy of the degree of vacuum in the mold cavity, Japanese Patent Application Laid-Open No. 8-33
As disclosed in Japanese Patent No. 258, the opening / closing time and the opening / closing timing of the vacuum valve unit are adjusted in conjunction with the position of the injection plunger.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
真空度調整装置は、射出プランジャの位置と連動させて
キャビティ内のガス抜きを開始し、真空度を制御する方
式はコストアップを伴うと共に射出プランジャの位置を
決めるのに時間がかかり、改善が求められていた。However, in the conventional vacuum degree adjusting apparatus, the method of starting gas release from the cavity in conjunction with the position of the injection plunger and controlling the degree of vacuum involves a cost increase and an injection plunger. It took a long time to determine the position, and improvement was required.
【０００４】本発明の目的は、射出プランジャの位置を
補正することなく、ダイカストマシン等の金型キャビテ
ィ内の真空度を調整することにより、溶湯の「先引き」
による鋳肌不良等を押さえることができる真空度調整装
置を提供することにある。An object of the present invention is to adjust the degree of vacuum in a mold cavity of a die casting machine or the like without correcting the position of an injection plunger, thereby "pulling" molten metal.
It is an object of the present invention to provide a vacuum degree adjusting device capable of suppressing a casting surface defect or the like due to the above.
【０００５】[0005]
【課題を解決するための手段】本発明の真空度調整装置
は、ダイカストマシン等の金型キャビティ内の真空度を
直接、真空センサで検出し調整する真空度調整装置にお
いて、射出成型工程における真空開始位置と終了位置は
射出プランジャのスタ−ト位置とストロ−クエンド位置
とし、真空タンクに設けた大気解放弁により、ダイカス
トマシン等の金型内の真空度を調整し、金型内のガスを
排出するように構成した。SUMMARY OF THE INVENTION A vacuum degree adjusting apparatus of the present invention is a vacuum degree adjusting apparatus for directly detecting and adjusting the degree of vacuum in a mold cavity such as a die casting machine with a vacuum sensor. The start position and the end position are the start position and the stroke end position of the injection plunger, and the degree of vacuum in the die of a die casting machine or the like is adjusted by the air release valve provided in the vacuum tank, and the gas in the die is released. It was configured to discharge.
【０００６】[0006]
【作用】真空開始位置でオン、オフバルブを開き、真空
バルブに接続する真空タンクに設けた大気解放弁によ
り、ダイカストマシン等の金型内の真空度を調整し、金
型内のガスを排出する。そして、終了位置でオン、オフ
バルブを閉じて成型を終える。At the vacuum start position, the on and off valves are opened, and the degree of vacuum in the die of a die casting machine or the like is adjusted by the air release valve provided in the vacuum tank connected to the vacuum valve, and the gas in the die is discharged. . Then, the ON and OFF valves are closed at the end position to complete the molding.
【０００７】[0007]
【発明の実施の形態】以下、図面に基づいて、この発明
の真空度調整装置について、実施例を挙げて説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vacuum adjusting device according to the present invention.
【０００８】図１はダイカストマシンの金型キャビティ
１内の真空度を調整するための真空度調整装置で、真空
タンク３に設けた大気解放弁１２は第一真空センサ９に
より検出した真空度を調整するように構成されている。FIG. 1 shows an apparatus for adjusting the degree of vacuum in a mold cavity 1 of a die casting machine. An atmosphere release valve 12 provided in a vacuum tank 3 detects the degree of vacuum detected by a first vacuum sensor 9. It is configured to adjust.
【０００９】次に、動作の説明を行なう。Next, the operation will be described.
【００１０】まず、真空ポンプＰを作動し、ストップバ
ルブ７、オン、オフバルブ８を「開」にする。予め、計
測したデータに基づき、大気解放弁１２を調整する。射
出成型工程における真空開始位置と終了位置は射出プラ
ンジャのスタ−ト位置とストロ−クエンド位置とし、射
出中にキャビティ１内の真空度を第一真空センサ９で検
知し、大気解放弁１２で真空度を設定する。キャビティ
１が所定の真空度にならなかったら、真空タンク３に設
けた第二真空センサ１３により大気解放弁１２を大気に
解放し調整する。First, the vacuum pump P is operated, and the stop valve 7 and the on / off valves 8 are opened. The atmosphere release valve 12 is adjusted based on the measured data in advance. The vacuum start position and the end position in the injection molding process are the start position and the stroke end position of the injection plunger, and the degree of vacuum in the cavity 1 is detected by the first vacuum sensor 9 during injection, and the vacuum is released by the atmosphere release valve 12. Set the degree. If the degree of vacuum in the cavity 1 does not reach the predetermined degree, the atmosphere release valve 12 is released to the atmosphere by the second vacuum sensor 13 provided in the vacuum tank 3 and adjusted.
【００１１】すなわち、真空タンク３は第二真空センサ
１３を基づいて大気解放弁１２により真空度を所定の値
に維持する。射出成型中、第二真空センサ１３で検出し
た真空タンク３の真空度は、図２に示すようにａ、ｂ、
ｃのように変化するので、金型キャビティ１の真空度に
反映することができる。これにより、溶湯の「先引き」
による鋳肌不良等を押さえることができ、ガスの巻き込
みの少ない鋳造品を得ることができる。That is, the degree of vacuum of the vacuum tank 3 is maintained at a predetermined value by the atmosphere release valve 12 based on the second vacuum sensor 13. During the injection molding, the degree of vacuum of the vacuum tank 3 detected by the second vacuum sensor 13 is a, b, b as shown in FIG.
Since it changes as shown by c, it can be reflected on the degree of vacuum of the mold cavity 1. As a result, "leading" of molten metal
This can suppress casting surface defects and the like, and can provide a cast product with less entrainment of gas.
【００１２】[0012]
【発明の効果】以上説明したように、この発明の真空度
調整装置によれば、射出プランジャの位置を補正するこ
となく、ダイカストマシン等の金型内の真空度を調整す
ることにより、溶湯の「先引き」による鋳肌不良等を押
さえることができる。As described above, according to the vacuum degree adjusting apparatus of the present invention, by adjusting the degree of vacuum in a mold of a die casting machine or the like without correcting the position of the injection plunger, the degree of melting of the molten metal can be improved. It is possible to suppress casting surface defects and the like due to “pull-in”.
【図１】実施例の構成を示す概略図を示す。FIG. 1 is a schematic diagram showing a configuration of an embodiment.
【図２】射出速度、キャビティ内の圧力、真空度を経時
変化で示めした図である。FIG. 2 is a diagram showing an injection speed, a pressure in a cavity, and a degree of vacuum over time.
１ キャビティ ２ チルベント ３ 真空タンク ９ 第一真空センサ １２ 大気解放弁 １３ 第二真空センサ DESCRIPTION OF SYMBOLS 1 Cavity 2 Chill vent 3 Vacuum tank 9 First vacuum sensor 12 Atmospheric release valve 13 Second vacuum sensor
Claims (1)
の真空度を直接、真空センサで検出し調整する真空度調
整装置において、射出成型工程における真空開始位置と
終了位置は射出プランジャのスタ−ト位置とストロ−ク
エンド位置とし、真空タンクに設けた大気解放弁によ
り、ダイカストマシン等の金型内の真空度を調整し、金
型内のガスを排出することを特徴とする真空度調整装
置。1. A vacuum adjusting device for directly detecting and adjusting the degree of vacuum in a mold cavity, such as a die casting machine, by a vacuum sensor, wherein a vacuum start position and an end position in an injection molding process are a start position of an injection plunger. A vacuum end adjusting device for adjusting the degree of vacuum in a mold such as a die-casting machine by means of an atmosphere release valve provided in a vacuum tank and discharging gas from the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8494198A JPH11254118A (en) | 1998-03-16 | 1998-03-16 | Vacuum adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8494198A JPH11254118A (en) | 1998-03-16 | 1998-03-16 | Vacuum adjustment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11254118A true JPH11254118A (en) | 1999-09-21 |
Family
ID=13844689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8494198A Pending JPH11254118A (en) | 1998-03-16 | 1998-03-16 | Vacuum adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11254118A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015169777A3 (en) * | 2014-05-06 | 2016-03-31 | Bühler AG | Method for operating a vacuum die-casting machine |
| CN111615434A (en) * | 2018-09-21 | 2020-09-01 | 本田技研工业株式会社 | Casting die for die casting and method for setting conductance of pressure reduction channel thereof |
-
1998
- 1998-03-16 JP JP8494198A patent/JPH11254118A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015169777A3 (en) * | 2014-05-06 | 2016-03-31 | Bühler AG | Method for operating a vacuum die-casting machine |
| CN111615434A (en) * | 2018-09-21 | 2020-09-01 | 本田技研工业株式会社 | Casting die for die casting and method for setting conductance of pressure reduction channel thereof |
| CN111615434B (en) * | 2018-09-21 | 2021-09-28 | 本田技研工业株式会社 | Casting die for die casting and method for setting conductance of pressure reduction channel thereof |
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