JPS5956958A - Vacuum die casting device - Google Patents

Vacuum die casting device

Info

Publication number
JPS5956958A
JPS5956958A JP16821482A JP16821482A JPS5956958A JP S5956958 A JPS5956958 A JP S5956958A JP 16821482 A JP16821482 A JP 16821482A JP 16821482 A JP16821482 A JP 16821482A JP S5956958 A JPS5956958 A JP S5956958A
Authority
JP
Japan
Prior art keywords
molten metal
cavity
switch
punch
air
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
Application number
JP16821482A
Other languages
Japanese (ja)
Inventor
Masaru Takei
武井 賢
Yoshiaki Umehara
良昭 梅原
Shigetoshi Kakinuma
柿沼 成利
Mitsuhiro Tonomura
外村 充弘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissin Kogyo Co Ltd
Original Assignee
Nissin Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissin Kogyo Co Ltd filed Critical Nissin Kogyo Co Ltd
Priority to JP16821482A priority Critical patent/JPS5956958A/en
Publication of JPS5956958A publication Critical patent/JPS5956958A/en
Pending legal-status Critical Current

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  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE:To prevent the generation of blowholes by sucking beforehand the air from a cavity by a vacuum device and pressing a molten metal in this state by a punch thereby packing the molten metal into the cavity. CONSTITUTION:A titled device is constituted of the cavity 2 in a die 1, a vacuum pump 24 which sucks the air from the inside thereof, a solenoid valve 22 which controls the volume of the air to be sucked by the vacuum pump between the cavity 2 and the pump 24, a punch 17 which presses and packs a molten metal into the cavity 2, the 1st switch 18 which detects the point of the time when the pressing of the molten metal by the punch 17 is started, the 2nd switch 19 which detects the point of the time just before the pressing of the molten metal by the punch 17 ends, and a control unit 20 which opens the valve 22 in accordance with the signal from the 1st switch 18 outputted at the point of the time when the pressing of the molten metal is started and closes the valve 22 in accordance with the signal from the 2nd switch 19 outputted at the point of the time just before the pressing of the molten metal ends.

Description

【発明の詳細な説明】 本発明は真空ダイカスト装置、特にスリーブに設けた湯
口から注入した溶湯をパンチ及び真空装置によってキャ
ビティに充填してダイカストする装置に関するものであ
る。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum die-casting device, and particularly to a device for die-casting by filling a cavity with molten metal injected from a sprue provided in a sleeve using a punch and a vacuum device.

従来、溶湯をパンチによってキャビティ内に押圧I7て
充填するプレッシャーダイカスト装置では、溶湯を注入
するとき湯口から入り込んだ空気及びキャビティ内に存
在する空気が気泡となって溶湯中に混入し、鋳造品に鋳
巣が発生してしまう。上記鋳巣の発生を防止するだめに
は、パンチをゆつ〈シと作動させキャビティ内に存在す
る空気及び湯口から入シ込んだ空気を金型の合せ目から
徐々に追い出すようにすればよいが、これrよれば鋳造
歩留シが悪く、シかも鋳巣を完全に除去することはでき
なかった。
Conventionally, in pressure die casting equipment that presses the molten metal into the cavity with a punch and fills it, when the molten metal is injected, the air that enters from the sprue and the air that exists in the cavity forms bubbles and mixes into the molten metal, causing problems in the cast product. A blowhole will occur. In order to prevent the formation of the above-mentioned blowholes, the punch can be operated slowly to gradually expel the air present in the cavity and the air that has entered through the sprue from the joint of the mold. However, according to this method, the casting yield was poor and it was not possible to completely remove the casting cavities.

捷た、キャビティに、吸引管を介して真空装置を接続し
キャビティを負圧とすることによシ溶湯をキャビティ内
に充てんするようにしたものも提案されているが、これ
によればキャビティに充填された溶湯か上記吸引管内に
流出してし寸い、吸引管の目詰シを引起すので実用上問
題であった。
It has also been proposed to fill the cavity with molten metal by connecting a vacuum device to the splintered cavity via a suction pipe to create negative pressure in the cavity. This is a practical problem because the filled molten metal flows out into the suction pipe and causes clogging of the suction pipe.

本発明の目的は、真空装置によって予めキャビティ内の
空気を吸引した状態で溶湯をパンチにより押圧1.てキ
ャビティ内に充填するようにして、上記欠点を除去する
ものであシ、以下実施例を用いて詳祁1に説明する。
The object of the present invention is to press the molten metal with a punch while the air inside the cavity is sucked in advance by a vacuum device. The above-mentioned drawbacks are eliminated by filling the cavity with the resin, which will be explained in detail below using an example.

図面d゛本発明による真空ダイカスト装置の一実施例を
示す簡略シイ6成図であp55内において1は金型1a
と1bとを互いに組合せて成る鋳造金型であり、上記金
型1aと1bとの間に所定の成形空間から成るキャビテ
ィ2が形成される。このキャビティ2は金型1に形成さ
れた溶湯注入口3と吸引孔4に連通している。上記溶湯
注入口3は外周5 (IIIに湯口6を有するスリーブ
7の吐出口8(llIllに連通している。まだ、」二
記吸引孔4は/ヤソI・オフピン9を収容する孔10に
連通して”r”t 、上記収容孔10の一端は吸引管1
1が接続される吸引口12側に連通ずる。上記シャット
オフピン9けエアーンリンダ装置12によって駆動され
、孔10内を往復運動するもので、その先端側に設けら
れた/−ル部13が前方に移動し、上記吸引孔4に対応
する位置脣で移動した時にこの吸引孔4の孔10側ケ塞
ぐと共に、シール部13が後方に移動すると、上記吸引
孔4を開口し、この吸引孔4を、孔10全介して吸引管
」1に連通させるととになる。上記エアーンリンダ装置
12けルノイドバルブ14によって制御される。
Drawing d is a simplified diagram showing an embodiment of the vacuum die-casting apparatus according to the present invention. In p55, 1 indicates a mold 1a.
A cavity 2 consisting of a predetermined molding space is formed between the molds 1a and 1b. This cavity 2 communicates with a molten metal inlet 3 and a suction hole 4 formed in the mold 1. The molten metal inlet 3 communicates with the discharge port 8 (III) of the sleeve 7 which has a sprue 6 on the outer periphery 5 (III). One end of the accommodation hole 10 is in communication with the suction pipe 1.
1 is connected to the suction port 12 side. It is driven by the air cylinder device 12 with the shutoff pin 9 and reciprocates within the hole 10, and the /-ru portion 13 provided on the tip side moves forward to correspond to the suction hole 4. When the seal part 13 moves backwards, it closes the hole 10 side of the suction hole 4, and when the seal part 13 moves backward, it opens the suction hole 4 and connects the suction pipe 1 through the entire hole 10. If you connect it to , it becomes . The air cylinder device 12 is controlled by the air cylinder valve 14.

上記スリーブ7にはパンチ17が収容され、このパンチ
17は油圧ンリンダ装置15によって駆動されるロッド
16に接続されるもので、このパンチ17はその先端1
7aが湯口6を最大限開口する位置6 a (1111
1から、湯口6を完全に塞ぐ位置6b(溶湯の押圧開始
時点)を通過L、溶湯がキャビティ2、吸引孔4に完全
に充填される位置6 d−1で移動する。上記ロッド1
6の移動方向に沿って2個の位置検出スイッチ18.1
9が配置されて2シ、このスイッチ、18.19はロッ
ド16に設けられたフラノン16aによって制御される
もので、スイッチ18はパンチ17の先端7aが湯口6
を完全に塞ぐ位置6btで移動した時に7ランジ16a
によってオンされて、位置検出信号S1を出力し、上記
パンチ17の先端17aが溶湯をキャビティ2側に完全
に注入し終える位置6dの直前の位置6C寸で移動[7
た時に7ランジ16aによってオンされて、位置検出信
号S2を出力する。上記各信号S、、S、は制御ユニッ
ト20に供給される。
A punch 17 is accommodated in the sleeve 7, and this punch 17 is connected to a rod 16 driven by a hydraulic cylinder device 15.
7a opens the sprue 6 to the maximum extent 6a (1111
1, passes through a position 6b (the point at which pressing of the molten metal starts) where the sprue 6 is completely closed, and moves to a position 6d-1 where the molten metal completely fills the cavity 2 and the suction hole 4. Above rod 1
6 along the direction of movement of the two position detection switches 18.1
This switch 18.19 is controlled by a flanone 16a provided on the rod 16.
7 lunge 16a when moving to the position 6bt that completely blocks the
is turned on, the position detection signal S1 is output, and the tip 17a of the punch 17 moves to a position 6C immediately before the position 6d where the molten metal is completely injected into the cavity 2 side [7].
When the position detection signal S2 is turned on by the 7 lunge 16a, the position detection signal S2 is output. Each of the above signals S, , S, is supplied to the control unit 20 .

上記排気管11はフィルター21.電磁弁22を介し7
てタンク23に接続される。上記タンク23内の圧力は
ポンプ24によって常時減圧される。
The exhaust pipe 11 has a filter 21. 7 via the solenoid valve 22
and is connected to the tank 23. The pressure inside the tank 23 is constantly reduced by the pump 24.

上記電磁弁22及びパルプ14は制御ユニット20から
の出力信号Sa 、 Sbによって制御される。
The solenoid valve 22 and the pulp 14 are controlled by output signals Sa and Sb from the control unit 20.

なお、制御ユニット20はリセットスイッチ20aがオ
ンされたとき電磁弁22を閉じ、ンヤノトオフピン9の
シール部13を開き、)くンチ17を図示状態に復帰さ
せる。また、スタートスイッチ20bがオンされると動
作を開始する。
Note that when the reset switch 20a is turned on, the control unit 20 closes the solenoid valve 22, opens the seal portion 13 of the push-off pin 9, and returns the punch 17 to the state shown in the figure. Furthermore, when the start switch 20b is turned on, the operation starts.

以上の構成の真空ダイカスト装置の動作を以下説明する
The operation of the vacuum die casting apparatus having the above configuration will be explained below.

真空ポンプ20は予め駆動しておき、タンク23の圧力
を減圧しておく、咬ず、湯口6から溶湯を注入し7てこ
の溶湯をスリーブ7内に注入する。
The vacuum pump 20 is driven in advance to reduce the pressure in the tank 23, and the molten metal is injected from the sprue 6 into the sleeve 7.

つぎにリセットスイッチ20aをオンして、ソヤノトオ
フピン9を後退させて吸気孔4を開き、電磁弁22を閉
じておく。つぎに、スタートスイッチ20bをオンする
と、制御ユニット20は油圧ンリンダ装置15を駆動し
、ロッド16を前進させ、パンチ17を吐出口8、注入
口3方向に前進させる。パンチ17の先端17aが位置
61つに達するとスイッチ18がオンするので、制御ユ
ニット20け電磁弁22を開いてキャビティ2、吸引孔
4内の空気を吸引する。また、このときに、・ぐンチ1
7による溶湯の押圧が始まり、パンチ17の前進に伴な
って溶湯が押圧されてキャビティ2、吸引孔4内に充填
される。パンチ17の先端17aが位置6dに達すると
、キャビティ2、吸引孔4内に溶湯が完全に充填される
。パンチ17が位置6Cに達した時点でスイ、ノテ19
がオンするので制御コーニット20け、信号Saを出力
L7て電磁弁22を閉じ、」−だ信号SIJを出力L−
でバルブ14を制御[7、シャットオフピン9をぶj進
させシール部13KJ−って収容孔10に流出すること
なく吸引孔4ケ完全に基ぐ。従って溶湯は吸引孔4の出
口でシール部13によって阻止され、キャビティ2、吸
引孔4内に所定量充填される。次に金型l a 、 ]
、 bを型開き1〜でキャビティ2内の鋳造品を取り出
し、鋳造品を得ることができる。
Next, the reset switch 20a is turned on, the exhaust pin 9 is moved back, the intake hole 4 is opened, and the solenoid valve 22 is closed. Next, when the start switch 20b is turned on, the control unit 20 drives the hydraulic cylinder device 15, advances the rod 16, and advances the punch 17 in the direction of the discharge port 8 and the injection port 3. When the tip 17a of the punch 17 reaches position 61, the switch 18 is turned on, and the solenoid valve 22 of the control unit 20 is opened to suck the air in the cavity 2 and the suction hole 4. Also, at this time, Gunchi 1
7 starts pressing the molten metal, and as the punch 17 advances, the molten metal is pressed and filled into the cavity 2 and the suction hole 4. When the tip 17a of the punch 17 reaches the position 6d, the cavity 2 and the suction hole 4 are completely filled with the molten metal. When punch 17 reaches position 6C, Sui, note 19
is turned on, the control unit 20 outputs the signal Sa, closes the solenoid valve 22, and outputs the signal SIJ, L-.
The valve 14 is controlled by [7], and the shut-off pin 9 is advanced to completely close the four suction holes without leaking into the accommodation hole 10 through the seal portion 13KJ-. Therefore, the molten metal is blocked by the seal portion 13 at the exit of the suction hole 4, and a predetermined amount is filled into the cavity 2 and the suction hole 4. Next, mold la,]
, b can be used to take out the cast product in the cavity 2 by opening the mold 1 to obtain a cast product.

本発明に」:る装置によれば、キャビティ2内の空気を
吸引しなから溶湯を充填するようにしたので、溶湯に気
泡が発生せず、これにより鋳巣が鋳造品に生じるのを防
(]−することができ、高品質のWf造品を得ることが
できる。また、上記キャビティに浴湯を充填する場合に
パンチ17を高速で移動l〜ながら充填することができ
るので、充填を確実にかつ短時間で行なうことができ、
鋳造歩留りを改善することができる。丑だ、パンチ17
による押圧が始丑った時点を検出するスイッチ18によ
って電磁弁22ケ開き、抑圧が終了したすんぜん時点を
検出するスイッチ18で電磁弁22を閉じるようにした
ので、溶湯が吸引管11に入って目詰シを起すのを防止
でき、まだタンク23.ポンプ24から成る真空装置の
無駄な動作を省くことができる。
According to the device according to the present invention, the molten metal is filled without sucking the air inside the cavity 2, so that air bubbles are not generated in the molten metal, thereby preventing the formation of blowholes in the cast product. (]-), and a high-quality Wf product can be obtained.Furthermore, when filling the cavity with hot water, the punch 17 can be filled while moving at high speed. It can be done reliably and in a short time,
Casting yield can be improved. It's ox, punch 17
The solenoid valve 22 is opened by the switch 18 which detects the point at which the pressure starts, and the solenoid valve 22 is closed by the switch 18 which detects the point at which the suppression ends, so that the molten metal enters the suction pipe 11. This prevents the tank from clogging. It is possible to eliminate unnecessary operations of the vacuum device including the pump 24.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明による加圧鋳造装置の一実施例を示す簡略
構成図である。 1 金型、2・キャビティ、3・・注入口、4・吸引孔
、6・・湯口、7・・・スリーブ、9 ・シャットオフ
ピン、10 孔、11・・吸引管、15・・エアーンリ
ンダ装置、17・・・パンチ、18.19・・・スイッ
チ、20・・・制御ユニット、22・・・電磁弁、23
・ タンク、24・・・真空ポンプ。 特許 出 願 人 日信工業株式会社 代理人  弁理士 宮 園 純 − 手続補正書 1 中イ11の表示 2 発明の名称   真空ダイカスト装置3 補止をす
る者 事件との関係   特許出願人 代表者 i f K 九 4、代理人 ?−r+tLだ明九+++書及び図面ケ添イマ1別紙の
通り補正する。 (内容に変更なし) 292−
The drawing is a simplified configuration diagram showing an embodiment of a pressure casting apparatus according to the present invention. 1. Mold, 2. Cavity, 3. Inlet, 4. Suction hole, 6. Sprue, 7. Sleeve, 9. Shut-off pin, 10. Hole, 11.. Suction pipe, 15.. Air. Linda device, 17... Punch, 18.19... Switch, 20... Control unit, 22... Solenoid valve, 23
・Tank, 24...vacuum pump. Patent applicant: Nissin Kogyo Co., Ltd. representative Patent attorney Jun Miyazono - Procedural amendment 1 Indication in Part A 11 2 Title of the invention Vacuum die-casting device 3 Relationship to the supplementary case Representative of the patent applicant if K94, agent? -r+tL Please make the corrections as per the Book of Meiji +++ and the attached image 1 of the drawings. (No change in content) 292-

Claims (1)

【特許請求の範囲】 (])  金型に設けられたキャビティと、このキャビ
ティ内の空気を吸引する真空装置と、上記キャビティと
真空装置との間に設けられ、真空装置に」:り吸引され
る空気量を制御する電磁弁と、上記キャビティ内に溶湯
を一定量抑圧充填するパンチと、上記パンチによる溶湯
の抑圧開始時点を検出する第1スイツチと、上記ピスト
ンによる溶湯の押圧終了直前の時点を検出する第2スイ
ツチと、溶湯の抑圧開始時点で出力される上記第1スイ
ツチからの信号に基づき上記電磁弁を開き、溶湯の抑圧
終了直前の時点で出力される上記第2スイツチからの信
号に基づき上記電磁弁を閉じる制御ユニットから成るこ
とを特徴とする真空ダイカスト装置。 (2)上記第1スイツチと第2スイツチは、上記パンチ
の移動ストロークを検出するりミツトスイッチから成る
特許請求の範囲第1項記載の真空ダイカスト装置。
[Scope of Claims] () A cavity provided in a mold, a vacuum device for sucking air in the cavity, and a vacuum device provided between the cavity and the vacuum device so that the air is sucked by the vacuum device. a punch for suppressing and filling a fixed amount of molten metal into the cavity; a first switch for detecting the point in time when the punch starts suppressing the molten metal; and a point in time immediately before the piston finishes pressing the molten metal. and a second switch that opens the electromagnetic valve based on a signal from the first switch that is output at the start of suppression of the molten metal, and a signal from the second switch that is output just before the suppression of the molten metal ends. A vacuum die casting apparatus comprising a control unit that closes the solenoid valve based on the following. (2) The vacuum die casting apparatus according to claim 1, wherein the first switch and the second switch are comprised of a limit switch for detecting the movement stroke of the punch.
JP16821482A 1982-09-27 1982-09-27 Vacuum die casting device Pending JPS5956958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16821482A JPS5956958A (en) 1982-09-27 1982-09-27 Vacuum die casting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16821482A JPS5956958A (en) 1982-09-27 1982-09-27 Vacuum die casting device

Publications (1)

Publication Number Publication Date
JPS5956958A true JPS5956958A (en) 1984-04-02

Family

ID=15863899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16821482A Pending JPS5956958A (en) 1982-09-27 1982-09-27 Vacuum die casting device

Country Status (1)

Country Link
JP (1) JPS5956958A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6847861B2 (en) 2001-11-30 2005-01-25 Mckesson Automation, Inc. Carousel product for use in integrated restocking and dispensing system
CN112059139A (en) * 2020-09-10 2020-12-11 广东鸿图南通压铸有限公司 Intelligent monitoring method for hydraulic high-vacuum valve of die casting machine die

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56105861A (en) * 1980-01-28 1981-08-22 Thurner Bayer Druckguss Die casting machine and method for operating said die casting machine
JPS5772766A (en) * 1980-10-27 1982-05-07 Takeshi Arai Molding method by vacuum die casting

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56105861A (en) * 1980-01-28 1981-08-22 Thurner Bayer Druckguss Die casting machine and method for operating said die casting machine
JPS5772766A (en) * 1980-10-27 1982-05-07 Takeshi Arai Molding method by vacuum die casting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6847861B2 (en) 2001-11-30 2005-01-25 Mckesson Automation, Inc. Carousel product for use in integrated restocking and dispensing system
US7010389B2 (en) 2001-11-30 2006-03-07 Mckesson Automation, Inc. Restocking system using a carousel
US7072737B2 (en) 2001-11-30 2006-07-04 Mckesson Automation, Inc. Filling a restocking package using a carousel
CN112059139A (en) * 2020-09-10 2020-12-11 广东鸿图南通压铸有限公司 Intelligent monitoring method for hydraulic high-vacuum valve of die casting machine die

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