JPH0677793B2 - Cavity vacuum detection method for vacuum die casting - Google Patents
Cavity vacuum detection method for vacuum die castingInfo
- Publication number
- JPH0677793B2 JPH0677793B2 JP59144028A JP14402884A JPH0677793B2 JP H0677793 B2 JPH0677793 B2 JP H0677793B2 JP 59144028 A JP59144028 A JP 59144028A JP 14402884 A JP14402884 A JP 14402884A JP H0677793 B2 JPH0677793 B2 JP H0677793B2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- cavity
- plunger
- molten metal
- degree
- 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
- 238000004512 die casting Methods 0.000 title claims description 6
- 238000001514 detection method Methods 0.000 title description 2
- 239000002184 metal Substances 0.000 claims description 19
- 230000013011 mating Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000005266 casting Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/32—Controlling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/14—Machines with evacuated die cavity
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 ［発明の属する技術分野］ 本発明は、真空ダイカストにおいて、鋳造中に金型のキ
ャビティの真空度を検出に関する。Description: TECHNICAL FIELD The present invention relates to detection of the degree of vacuum of a cavity of a mold during casting in vacuum die casting.
［従来の技術］ 真空ダイカストにおいて、金型のキャビティの真空度を
鋳造中に計測する際にキャビティを画成する金型の分割
面もしくは分割面に上方にキャビティの真空度を検出器
を接続すると、溶湯の射出時に検出器へ溶湯が流れ込む
ことになる。[Prior Art] In a vacuum die casting, when a vacuum degree of a cavity of a mold is measured during casting, if a detector is connected to the dividing surface of the die defining the cavity or the vacuum degree of the cavity above the dividing surface. When the molten metal is injected, the molten metal will flow into the detector.
［発明が解決しようとする課題］ このためキャビティの真空度を確認しないまま溶湯を射
出し真空が有効に作用しているか否かは製品を検査しな
いと不明であり、これが製品の歩止りを悪くしていた。[Problems to be Solved by the Invention] For this reason, it is unclear if the product is inspected by injecting the molten metal without checking the degree of vacuum of the cavity and whether the vacuum is effectively operating. Was.
［課題を解決するための手段］ 固定金型および移動金型の型合せ面にキャビティを設
け、固定金型にプランジャチップを摺動自在に嵌着した
プランジャスリーブを装着し、溶湯が真空装置に流入す
るのを阻止するストッパー装置を移動金型に設けた真空
ダイカスト装置において、キャビティに通ずるプランジ
ャスリーブの溶湯の接することのない上部に設けた接続
口に検出器を接続し、プランジャチップが接続口に到達
する前に検出器によりキャビティの真空度を検出するよ
うにしたものである。[Means for Solving the Problem] A cavity is provided on the mating surfaces of the fixed mold and the movable mold, and a plunger sleeve in which a plunger chip is slidably fitted is mounted on the fixed mold, and the molten metal is transferred to a vacuum device. In a vacuum die casting device equipped with a stopper device to prevent inflow in the moving mold, connect the detector to the connection port provided in the upper part of the plunger sleeve that does not come into contact with the molten metal, and connect the detector to the connection port. The vacuum degree of the cavity is detected by the detector before reaching the temperature.
［作用］ キャビティに通ずるプランジャスリーブの溶湯の接する
ことのない上部に設けた接続口に検出器を接続し、プラ
ンジャチップが接続口に到達する前に検出器によりキャ
ビティの真空度を検出する。[Operation] A detector is connected to a connection port provided in an upper portion of the plunger sleeve that does not come into contact with the molten metal that communicates with the cavity, and the degree of vacuum of the cavity is detected by the detector before the plunger tip reaches the connection port.
［実施例］ 以下、本発明について実施例を示した第１図により説明
する。固定金型11および移動金型12の型合せ面キャビテ
ィ13が形成され、固定金型11に取付けたプランジャスリ
ーブ14の注ぎ口15から注入された溶湯（図示せず）は射
出時にプランジャチップ16の前進（図で左行）によりキ
ャビティ13に射出される。キャビティ13を構成する移動
金型12の上方に設けた通路19にはフイルタ20と開閉弁21
を介して真空源22に接続され、開閉弁21は継手17を介し
てONするリミットスイッチ18の信号により開くようにな
っている。プランジャスリーブ14の溶湯の接することの
ない中間上方の接続口30にはキャビティ13の真空度を測
定する検出器23が接続され、該検出器23はキャビティ13
の真空度を所定値に設定する真空限設定器24に接続さ
れ、該真空限設定器24はキャビティ13の真空度が所定値
になっていることを判断してプランジャチップ16を前進
（図で左行）させる射出シリンダ（図示せず）に信号を
送る。[Embodiment] The present invention will be described below with reference to FIG. 1 showing an embodiment. Forming surface cavities 13 of the fixed mold 11 and the moving mold 12 are formed, and the molten metal (not shown) injected from the pouring port 15 of the plunger sleeve 14 attached to the fixed mold 11 is injected into the plunger tip 16 during injection. It is injected into the cavity 13 by advancing (leftward in the figure). A filter 20 and an on-off valve 21 are provided in a passage 19 provided above the movable mold 12 which constitutes the cavity 13.
The on-off valve 21 is connected to the vacuum source 22 via the connection valve 17 and is opened by the signal from the limit switch 18 which is turned on via the joint 17. A detector 23 for measuring the degree of vacuum of the cavity 13 is connected to a connection port 30 in the upper middle portion of the plunger sleeve 14 where the molten metal does not come into contact, and the detector 23 is the cavity 13
Is connected to a vacuum limit setter 24 for setting the vacuum degree of the cavity to a predetermined value, and the vacuum limit setter 24 advances the plunger tip 16 by judging that the vacuum degree of the cavity 13 is at a predetermined value (in the figure). A signal is sent to the injection cylinder (not shown) to be left-handed.
なお25は溶湯がフィルタ20側に流入することを阻止する
ストッパであり、26は製品等を移動金型12から押出す押
出棒であり、27は押出棒27を前進させる押出板である。Note that 25 is a stopper that prevents the molten metal from flowing into the filter 20, 26 is an extruding rod that extrudes a product or the like from the moving mold 12, and 27 is an extruding plate that advances the extruding rod 27.
次に前述した実施例の動作を第２図ないし第４図により
説明する。先づ第２図に示すようにプランジャチップ16
の先端を注ぎ口15の端部まで前進（図で左行）させた状
態で、溶解炉（図示せず）から溶湯28をプランジャスリ
ーブ14内に注入する。プランジャチップ16が前進し注ぎ
口15を封鎖すると第３図に示すようにリミットスイッチ
18が作動して、開閉弁21が開くためキャビティ13は通路
19を介して真空源22に連通される。ここで真空源22は大
容量であるからキャビティ13は短時間で高真空に保持さ
れる。続いて第４図に示すようにプランジャチップ16が
接続口30を封鎖するまでの間に検出器23は、プランジャ
スリーブ16およびキャビティ13の高真空を検出し、真空
限設定器24によりプランジャスリーブ16およびキャビテ
ィ13の真空度を確認してプランジャチップ16を前進させ
る。なおこのとき、図に示すようにプランジャスリーブ
16の上方には空間が残っているため、検出器23への接続
口30は溶湯28により封鎖されることはない。この後、プ
ランジャチップ16はさらに前進して溶湯28をキャビティ
13に射出し、キャビティ13の上端に溶湯28が到達した時
点にストッパ25を前進（図で右行）させる。キャビティ
13に溶湯28が充満した後、溶湯28の冷却固化を待って移
動金型12を後退（図で左行）させ製品（図示せず）を押
出棒26により押出す。Next, the operation of the above-described embodiment will be described with reference to FIGS. Plunger tip 16 as shown in FIG.
The molten metal 28 is poured into the plunger sleeve 14 from a melting furnace (not shown) with the tip of the molten metal advanced to the end of the spout 15 (leftward in the figure). When the plunger tip 16 moves forward and closes the spout 15, as shown in Fig. 3, the limit switch
18 operates and the on-off valve 21 opens, so the cavity 13 is
It is connected to a vacuum source 22 via 19. Here, since the vacuum source 22 has a large capacity, the cavity 13 is maintained in a high vacuum in a short time. Subsequently, as shown in FIG. 4, the detector 23 detects the high vacuum of the plunger sleeve 16 and the cavity 13 until the plunger tip 16 closes the connection port 30, and the vacuum limit setter 24 causes the plunger sleeve 16 to move. And the degree of vacuum of the cavity 13 is confirmed, and the plunger tip 16 is advanced. At this time, as shown in the figure, the plunger sleeve
Since a space remains above 16 the connection port 30 to the detector 23 is not blocked by the molten metal 28. After this, the plunger tip 16 advances further and the melt 28 is
When the molten metal 28 reaches the upper end of the cavity 13, the stopper 25 is moved forward (rightward in the figure). cavity
After 13 is filled with the molten metal 28, the moving die 12 is retracted (leftward in the figure) after the molten metal 28 is cooled and solidified, and a product (not shown) is extruded by the extrusion rod 26.
［発明の効果］ 本発明は、キャビティに通ずるプランジャスリーブの溶
湯の接することのない上部に設けた接続口に検出器を接
続し、かつプランジャチップがプランジャスリーブの検
出器の接続口に到達する前に真空度を測定するようにし
たので、プランジャチップの移動中でもキャビティの真
空度を検出することが可能になり、キャビティ内の真空
度より高くすることができるので、キャビティ内のガス
除去を高めることになって製品の品質が安定する利点を
有する。[Advantages of the Invention] According to the present invention, the detector is connected to the connection port provided in the upper portion of the plunger sleeve that does not come into contact with the molten metal, and the plunger tip reaches the connection port of the detector of the plunger sleeve. Since the degree of vacuum is measured in the cavity, it is possible to detect the degree of vacuum in the cavity even when the plunger tip is moving, and it is possible to make it higher than the degree of vacuum in the cavity. It has the advantage that the product quality is stable.
第１図は本発明の実施例の断面図、第２図ないし第４図
はプランジャスリーブ内の溶湯の位置を示す異なる時点
の説明図である。 11…固定金型、12…移動金型、13…キャビティ、14…プ
ランジャスリーブ、16…プランジャチップ、23…検出
器、30…接続口。FIG. 1 is a sectional view of an embodiment of the present invention, and FIGS. 2 to 4 are explanatory views showing the position of the molten metal in the plunger sleeve at different times. 11 ... Fixed mold, 12 ... Moving mold, 13 ... Cavity, 14 ... Plunger sleeve, 16 ... Plunger tip, 23 ... Detector, 30 ... Connection port.
Claims (1)
ビティを設け、前記固定金型にプランジャチップを摺動
自在に嵌着したプランジャスリーブを装着し、溶湯が真
空装置に流入するのを阻止するストッパー装置を前記移
動金型に設けた真空ダイカスト装置において、前記キャ
ビティに通ずる前記プランジャスリーブの溶湯の接する
ことのない上部に設けた接続口に真空度検出器を接続
し、前記プランジャチップが前記接続口に到達する前に
前記真空度検出器により前記プランジャチップの移動中
で前記キャビティの真空度を検出するようにしたことを
特徴とする真空ダイカストのキャビティ真空度検出方
法。1. A cavity is provided on the mating surfaces of a fixed mold and a movable mold, and a plunger sleeve in which a plunger chip is slidably fitted is mounted on the fixed mold so that molten metal flows into a vacuum device. In the vacuum die casting device in which a stopper device for preventing the above is provided in the movable die, a vacuum degree detector is connected to a connection port provided in an upper portion of the plunger sleeve that does not come into contact with the molten metal of the plunger sleeve, and the plunger tip is connected to the plunger tip. The method for detecting the degree of vacuum in a cavity of a vacuum die casting, wherein the degree of vacuum of the cavity is detected while the plunger chip is moving by the vacuum degree detector before reaching the connection port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59144028A JPH0677793B2 (en) | 1984-07-11 | 1984-07-11 | Cavity vacuum detection method for vacuum die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59144028A JPH0677793B2 (en) | 1984-07-11 | 1984-07-11 | Cavity vacuum detection method for vacuum die casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6123561A JPS6123561A (en) | 1986-02-01 |
| JPH0677793B2 true JPH0677793B2 (en) | 1994-10-05 |
Family
ID=15352641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59144028A Expired - Lifetime JPH0677793B2 (en) | 1984-07-11 | 1984-07-11 | Cavity vacuum detection method for vacuum die casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0677793B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5219409A (en) * | 1992-04-27 | 1993-06-15 | Outboard Marine Corporation | Vacuum die casting process |
| JP2587759B2 (en) * | 1992-10-09 | 1997-03-05 | リョービ株式会社 | Apparatus and method for detecting defects in exhaust line of casting machine |
| KR100707540B1 (en) * | 2004-06-17 | 2007-04-13 | 도시바 기카이 가부시키가이샤 | Vacuum control system of die casting machine and vacuum die casting method |
| JP4646622B2 (en) * | 2004-12-28 | 2011-03-09 | 株式会社アーレスティ | Vacuum die casting method and vacuum die casting apparatus |
| CN107335789B (en) * | 2017-08-30 | 2023-06-16 | 鞍山海望真空设备制造有限公司 | Double independent system die casting high vacuum device |
| CN108543939B (en) * | 2018-05-24 | 2019-12-31 | 苏州市永利成模具制造有限公司 | Production facility machinery intelligence control system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5126293B2 (en) * | 1972-10-31 | 1976-08-05 | ||
| JPS571740Y2 (en) * | 1979-08-31 | 1982-01-12 | ||
| JPS602948B2 (en) * | 1980-10-27 | 1985-01-24 | 彪 荒井 | Vacuum die casting equipment |
-
1984
- 1984-07-11 JP JP59144028A patent/JPH0677793B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6123561A (en) | 1986-02-01 |
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