JPS63199059A - Die-casting apparatus - Google Patents

Die-casting apparatus

Info

Publication number
JPS63199059A
JPS63199059A JP3150987A JP3150987A JPS63199059A JP S63199059 A JPS63199059 A JP S63199059A JP 3150987 A JP3150987 A JP 3150987A JP 3150987 A JP3150987 A JP 3150987A JP S63199059 A JPS63199059 A JP S63199059A
Authority
JP
Japan
Prior art keywords
pressurizing
rod
main
pressure
molten metal
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
JP3150987A
Other languages
Japanese (ja)
Inventor
Masakazu Sato
正和 佐藤
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP3150987A priority Critical patent/JPS63199059A/en
Publication of JPS63199059A publication Critical patent/JPS63199059A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To produce crystal structure having no defect in a casting product by accommodating a piston as one body with sub-rod for pressurizing in a cylinder room formed in a main rod for pressurizing, making the sub-rod for pressurizing as movable in and out at the end of the main rod for pressurizing and acting effectively pressure by secondary pressurizing at the part positioning in front of the rod for pressurizing. CONSTITUTION:In a movable die 24, a hydraulic cylinder 56 for secondary pressurizing is supported and the main rood 60 for pressurizing as one body with a main piston 58 inserted in the hydraulic cylinder 56 can be advanced into a cavity A by penetrating the movable die 24. And, in the cylinder room 62 opening to the main piston 58 side of the main rod 60 for pressurizing, the piston 64 as one body with the sub-rod 66 for pressurizing is accommodate. After the main rod 60 for pressurizing of the hydraulic cylinder 56 for secondary pressurizing is pushed in the molten metal in the cavity A, the solidification around the main rod 60 for pressurizing is progressed and further after stopping the main rod 60 for pressurizing, the sub-rod 66 for pressurizing is advanced and extended from the end of the main rod 60 for pressurizing and the sufficient pressure by the secondary pressurizing is acted to the non-solidified molten metal positioning in front of the end part of the main rod 60 for pressurizing.

Description

【発明の詳細な説明】 m匹且旦豆1 本発明は、金型キャピテイ内に充填した溶)gに二次加
圧圧力を作用ざUる形式のダイカスト¥−首に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a type of die casting in which secondary pressure is not applied to the melt filled in the mold cavity.

【1反亙旦孟旦土辺11孟 溶湯を高圧で鋳込む加圧ダイカスト法(単にダイカスト
法と呼ばれる)においては、V内部に鋳巣が生じるとと
もに結晶組織が粗大化し、該肉厚部の強度低1・を来た
すという傾向があった。この問題を解決づるために、金
型のキャビティ内に溶湯な加圧充填し、溶)易が凝固す
る以前にキャビティ内の溶湯に二次加圧圧力を作用させ
る方法が提案された(例、特公昭/Ifl−7570号
公報、特公昭49−36093号公報)。
In the pressure die-casting method (simply called the die-casting method) in which molten metal is cast under high pressure, cavities occur inside the V and the crystal structure becomes coarser, causing the thick part to become coarser. There was a tendency for the strength to be low 1. In order to solve this problem, a method has been proposed in which the cavity of the mold is filled with molten metal under pressure and a secondary pressure is applied to the molten metal in the cavity before the molten metal solidifies (for example, (Japanese Patent Publication No. Sho/Ifl-7570, Japanese Patent Publication No. 49-36093).

この方法で使用される金型の要部構造は、例えば第1図
図示の様になっている。01は金型であり、該金型01
に貫通形成された開孔に二次加圧シリング−装置によっ
て進退駆動せしめられる加圧棒02が囲動自在にIN挿
されている。
The main structure of the mold used in this method is, for example, as shown in FIG. 01 is a mold, and the mold 01
A pressurizing rod 02, which is driven forward and backward by a secondary pressurizing device, is movably inserted into the opening formed in the opening.

この加圧棒02は、ギ17ビテイAに充填された溶′6
203中に前進して押込まれ、凝固前の溶403に二次
加圧圧力を印加する。
This pressure rod 02 is connected to the melt '6 filled in the pipe 17A.
It is pushed forward into the melt 403 and applies a secondary pressurizing pressure to the melt 403 before solidification.

ところが、溶湯03の凝固はキャビティAの周壁から急
速に進行し、中央部分が最後に凝固する関係上、特に加
圧棒押込み深さの大きな場合、加圧棒02が前進する過
程で該加圧棒周囲の03A部が凝固しでしまい、該凝固
a]織に過大な剪断応力による欠陥(湯皺等)が発生す
る一方、加圧棒の前方に位1tffする未凝固03[3
部に右効な二次加圧ルカが作用せず、033部に鋳巣が
生じ、また結晶組織の十分な緻密化を達成し得ないとい
う不本意な結束になりがちである。
However, since the solidification of the molten metal 03 proceeds rapidly from the peripheral wall of the cavity A, and the central part solidifies last, especially when the pressurizing rod is pushed into a large depth, the pressurizing rod 02 is moved forward. The 03A part around the rod is solidified, and defects (wrinkles, etc.) occur in the solidified fabric due to excessive shear stress, while the unsolidified 03[3
The secondary pressurizing force does not act on the 033 part, blowholes are formed in the 033 part, and the crystal structure tends to be undesirably densified.

八 4°   するためのニ一 本発明の目的は、金型のキャビティ内に溶湯を充填し、
溶湯が凝固する以前にギレビティ内に加圧棒を前進させ
て溶湯に二次加11:F+力を作用させるに当り、凝固
組織に対する無理な加圧を防止するとともに、加ロー棒
の前方に位置する部分にも右効な二次加圧圧力を作用さ
せ、もって健全II織構造のtR造品を(7る点にある
8 4° D. The object of the present invention is to fill the cavity of a mold with molten metal,
Before the molten metal solidifies, when the pressurizing rod is advanced into the girevity to apply the secondary force 11:F+ force to the molten metal, the pressure rod is positioned in front of the pressurizing rod to prevent excessive pressure on the solidified tissue. A secondary pressurizing pressure is also applied to the part where the material is to be woven, thereby creating a tR product with a sound II weave structure (located at point 7).

この目的は、金型壁部を貫通ずる主加圧棒に、該主加圧
棒の先端にて出没する少なくとも一木の01加圧棒を内
蔵させ、主加圧棒中に形成されたシリンダー空にvIJ
加圧棒と一体のピストンを収納するとともに、該シリン
ダー空に主加圧棒用作動油を導くことによって達成され
る。
The purpose is to incorporate at least one wooden 01 pressure rod that retracts and retracts from the tip of the main pressure rod into the main pressure rod that penetrates the mold wall, and a cylinder formed in the main pressure rod. vIJ in the sky
This is achieved by accommodating a piston that is integrated with the pressure rod and guiding the hydraulic oil for the main pressure rod into the cylinder.

犬JLJ 以下、第2図ないし第5図に示した本発明の一実施例に
ついて説明する。
Dog JLJ Hereinafter, an embodiment of the present invention shown in FIGS. 2 to 5 will be described.

第2図は、二次加圧圧力を作用さゼることが可(ft=
なダイカスト装置10を、その二次加圧用油圧制御系6
8と共に示している。ダイカスト装置1oの1.<台1
2上には、複数本の連結棒18によって相互に連結され
るとともに間隔を置いて相対向する固定プラテン14.
16が不動に立設されている。また、固定プラテン14
. IGの聞に位おして、3J!結棒18によって窩内
され、尽台12上を摺動変位する可動プラテン20が配
設されている。
Figure 2 shows that it is possible to apply secondary pressurization pressure (ft=
A hydraulic control system 6 for secondary pressurization of the die casting device 10
It is shown together with 8. 1 of the die casting machine 1o. <Unit 1
Fixed platens 14.2 are connected to each other by a plurality of connecting rods 18 and face each other at intervals.
16 are fixedly erected. In addition, the fixed platen 14
.. Place it on IG, 3J! A movable platen 20 is disposed which is inserted into the cavity by a connecting rod 18 and is slidably displaced on the mounting plate 12.

そして、固定金型22は固定プラテン16に固定され、
可aJO型24は保持体2Gを介して可動プラテン20
に固定されている。可動金型24を貫通してギtνビテ
ィAに臨み、vJ造完了後の製品を可動金型24から引
きmずために用いられる押出しビン32は、rfI動相
対変位自在に可動金型24を貫通する保持棒30によっ
て支持される押出し板28に固定されており、該押出し
板28は、押出し用油圧シリンダ−34のピストンに連
なる押し棒3GにJ:って、可動金型24に対して相対
的に製品引き離し方向へ動かされる様になっている。
Then, the fixed mold 22 is fixed to the fixed platen 16,
The movable JO type 24 is attached to the movable platen 20 via the holder 2G.
is fixed. The extrusion bottle 32 passes through the movable mold 24 and faces the gap A, and is used to pull the product from the movable mold 24 after VJ manufacturing is completed. It is fixed to an extrusion plate 28 supported by a penetrating holding rod 30. It is relatively moved in the direction of product separation.

また、固定プラテン14に可動プラテン駆動用油圧シリ
ンダー38が固定され、そのピストンと一体の押し棒4
0によって可動プラテン20が動かされる様になってい
る。
Further, a hydraulic cylinder 38 for driving the movable platen is fixed to the fixed platen 14, and a push rod 4 integrated with the piston thereof is fixed to the fixed platen 14.
0 causes the movable platen 20 to be moved.

さらに、固定プラテン16に支持棒48を°bって射出
用油圧シリング−42が固定され、そのピストン44に
連なる射出ラム4Gが、固定プラテン1Gを貫通して固
定金型22の湯道に連通するQJ出ススリーブ50摺動
変位自在に嵌合しており、it潟口52を通じて射出ス
リーブ50内に溶湯を供給した後、ピストン44の作動
で射出ラム4Gが前進方向へ動くと、射出スリーブ50
内のrFJ濁がWfiを通じてキャビティΔ内に押し込
まれる様になっている。
Further, an injection hydraulic cylinder 42 is fixed to the fixed platen 16 by a support rod 48, and an injection ram 4G connected to the piston 44 penetrates the fixed platen 1G and communicates with the runner of the fixed mold 22. The QJ exit sleeve 50 is slidably fitted into the injection sleeve 50, and when the injection ram 4G moves in the forward direction by the operation of the piston 44 after supplying molten metal into the injection sleeve 50 through the IT lagoon 52, the injection sleeve 50
The rFJ turbidity inside is pushed into the cavity Δ through Wfi.

一方、可動金型24には、保持棒54を介して二次加圧
用油圧シリンダ−5Gが支持されており、油圧シリング
−56に嵌装された主ピストン58と一体の主加圧棒G
Oが押出し板28および可動金P!X!24を摺動変位
自在に貫通してキャビティΔ内に進入しく7る様に構成
されている。主加圧棒60は、主ピストン58の受口面
側から間口形成されたシリンダー室62を有しており、
シリングーq62に収納された副ピストンG4と一体の
副加圧棒G6が、主油り棒60の軸心部を貫通して該主
加圧棒60の先端にて出没する様になされている。なお
、主ピストン58の受圧面面積をSz、主加圧棒60の
先端面面積をSl、副ピストン64の受圧面面積をSl
、副ピストンG4の先端面面積を82とする時、St/
5t−82/S2にするのが望ましい(第3図)。
On the other hand, a secondary pressurizing hydraulic cylinder 5G is supported on the movable mold 24 via a holding rod 54, and a main pressurizing rod G is integrated with a main piston 58 fitted in a hydraulic cylinder 56.
O is the extrusion plate 28 and the movable metal P! X! 24 so as to be slidably displaceable and enter into the cavity Δ. The main pressure rod 60 has a cylinder chamber 62 that is opened from the receiving surface side of the main piston 58.
A sub-pressure rod G6, which is integrated with the sub-piston G4 housed in the cylinder q62, penetrates the axial center of the main oil rod 60 and extends and retracts at the tip of the main pressure rod 60. Note that the pressure receiving surface area of the main piston 58 is Sz, the tip surface area of the main pressure rod 60 is Sl, and the pressure receiving surface area of the sub piston 64 is Sl.
, when the area of the tip surface of the sub-piston G4 is 82, St/
It is desirable to use 5t-82/S2 (Figure 3).

二次加圧用油圧シリンダ−56の油圧制御系68は、射
出用油圧シリンダ−42の作動圧を油路72を通じて取
出し、これを指針として動作する。すなわち、油圧シリ
ンダー42の作動圧がシーケンスパルプ74に尋かれる
と、付勢ばね力を利用してその起動圧を調整することが
TIJr#、な該シーケンスバルブ74が動作し、油圧
ポンプ70から吐出された圧油が油路7G、切換弁78
.流箔g!l?!!弁80.加圧棒前進用油路82を通
じて二次加圧用油圧シリング−56に乃かれ、加圧棒5
8が動作してキ1シビティA内に進入する様に、hロ圧
制御系68が構成されている。
The hydraulic control system 68 of the secondary pressurizing hydraulic cylinder 56 takes out the working pressure of the injection hydraulic cylinder 42 through the oil passage 72 and operates using this as a guide. That is, when the operating pressure of the hydraulic cylinder 42 is asked of the sequence valve 74, the starting pressure is adjusted using the biasing spring force.The sequence valve 74 operates and discharge from the hydraulic pump 70 The pressurized oil flows through the oil passage 7G and the switching valve 78.
.. Ryuhaku g! l? ! ! Valve 80. The pressure rod 5 is connected to the secondary pressure hydraulic cylinder 56 through the pressure rod advancement oil passage 82.
The pressure control system 68 is configured such that the pressure control system 68 operates and enters the cavity A.

斯かる構成において、注湯口52を通じてΩ1出スリー
ブ50内に溶湯(例、アルミニウム合金)を注入した俵
、射出用油Dシリンダー42の作動によって射出ラム4
Gを前j1させると、射出スリーブ50内の溶湯が:1
:ヤビティΔ内に加圧充!眞される。また、射出用油圧
シリンダ−42の作動開始と同時にその高圧室の油圧が
油路72を通じてシーケンスバルブ74に導かれ、該油
圧が成る大きさに達した時(TI )  (すなわち、
主11ピテイA内への溶湯充填完了時)、シーケンスバ
ルブ74が連通状態になり、切換弁78が第2図図示の
状態から変位した状態でシーケンスバルブ74.油路7
6、切換弁78.流m調整弁80.加n棒前進用油路8
2を通じて二次加圧用油圧シリンダ−56の高圧空に油
圧ポンプ62の吐出油が送られ(時点T2)、主加圧棒
60が前進してキャビティAを)り)だす溶湯中に叩込
まれ、凝固が完了していない該溶湯に二次加圧圧力が印
加せしめられる。
In such a configuration, a bale of molten metal (for example, aluminum alloy) is injected into the Ω1 output sleeve 50 through the pouring port 52, and the injection ram 4 is heated by the operation of the injection oil D cylinder 42.
When G is moved forward j1, the molten metal inside the injection sleeve 50 is: 1
: Pressurize inside Yaviti Δ! It is true. Further, at the same time as the injection hydraulic cylinder 42 starts operating, the hydraulic pressure in the high pressure chamber is led to the sequence valve 74 through the oil passage 72, and when the hydraulic pressure reaches a certain level (TI) (i.e.,
When the filling of molten metal into the main 11 pitey A is completed), the sequence valve 74 enters the communication state, and the switching valve 78 is displaced from the state shown in FIG. Oil road 7
6. Switching valve 78. Flow m adjustment valve 80. Oil passage 8 for advancing the n-rod
2, the oil discharged from the hydraulic pump 62 is sent to the high-pressure air of the secondary pressurizing hydraulic cylinder 56 (time T2), and the main pressurizing rod 60 advances and is hammered into the molten metal leaving the cavity A). Secondary pressurizing pressure is applied to the molten metal that has not yet completely solidified.

この時、1加E[棒60の周囲の凝固が進行して規定圧
で主加圧棒60が停止した後にも、主加圧棒60用作動
油が副ピストンG4に作用しているため、副加圧棒6G
が11a進して主加圧棒GOの先端から伸び出し、主加
圧棒GOの先端前方に位置する未凝固溶湯8Gにb主加
圧棒周囲の周囲に存する凝固部分と同等の圧力が加えら
れる。前記面積比S+/S+=32/32は、この同等
の圧力を176ために必要な条イ′1である。
At this time, even after the main pressure rod 60 stops at the specified pressure due to the progress of solidification around the pressure rod 60, the hydraulic oil for the main pressure rod 60 is still acting on the sub piston G4. Sub pressure rod 6G
advances 11a and extends from the tip of the main pressure rod GO, and pressure equivalent to the solidified portion around the main pressure rod b is applied to the unsolidified molten metal 8G located in front of the tip of the main pressure rod GO. It will be done. The area ratio S+/S+=32/32 is the strip '1' required to achieve this equivalent pressure of 176.

なお、前記時点(T1)から副加圧棒66の前進終了時
点(T3)までの時間は、例えば内燃は関の動弁機構で
使用されるアルミニ・ラム合金(JIS^DC12材)
製ロッカアームを1!7る場合、0.1〜0.8秒(T
3 Tl = 0.1〜0.8)でなければならない。
The time from the above-mentioned time point (T1) to the end time point (T3) of the advance of the auxiliary pressure rod 66 is, for example, an aluminum ram alloy (JIS^DC12 material) used in the valve mechanism of an internal combustion engine.
0.1 to 0.8 seconds (T
3 Tl = 0.1-0.8).

また、該ロッカアームを1!?る場合の溶湯充填圧は約
6ooKg/ ci 、主油几棒58.副加圧棒66に
よる二次加圧圧力は約2 、500に’l / ciで
ある(以上、第4図、第5図参照)。
Also, the rocker arm is 1! ? The molten metal filling pressure is approximately 6ooKg/ci, and the main oil tank is 58. The secondary pressing pressure by the auxiliary pressing rod 66 is approximately 2,500'l/ci (see FIGS. 4 and 5).

二次加圧圧力は、キャビティA内の溶湯が凝固し終るま
で印加され、その後切換弁78の切換えによって加圧棒
後退用油路84を通じて二次加圧用油圧シリンダ−5G
に圧油が供給され、主加圧棒60゜D) hn a棒6
6が後′J■せしめられる。
The secondary pressurizing pressure is applied until the molten metal in the cavity A finishes solidifying, and then, by switching the switching valve 78, the secondary pressurizing hydraulic cylinder 5G is passed through the pressurizing rod retreat oil passage 84.
Pressure oil is supplied to the main pressure rod 60°D) hn a rod 6
6 is forced back.

斯様に、本実施例では、二次加圧用油圧シリンダ−56
と連通ずるシリンダー室62を主加圧棒60に設け、該
シリンダー室62に1医挿させた副ピストン64と一体
の01加■棒66を主加圧棒60の先端で出没させる様
に構成したため、主加圧棒GOの周囲の溶湯凝固部分に
過大な几ツノを作用させることなく、主加圧棒60の先
端前方に存する未凝固溶湯にも十分な二次用IE)it
−力を作用させることができ、それによって鋳巣発生、
過大な剪断応力に起因する内部欠陥がなく、組織(7a
造が十分微細化された鋳造品が17られる。
In this way, in this embodiment, the secondary pressurizing hydraulic cylinder 56
The main pressure rod 60 is provided with a cylinder chamber 62 that communicates with the main pressure rod 60, and an 01 pressure rod 66 integrated with a sub piston 64 inserted into the cylinder chamber 62 is constructed so as to appear and retract at the tip of the main pressure rod 60. Therefore, the secondary use IE) can be applied to the unsolidified molten metal existing in front of the tip of the main pressure rod 60 without applying an excessively sharp horn to the solidified portion of the molten metal around the main pressure rod GO.
− Force can be applied, thereby causing blow holes,
There are no internal defects caused by excessive shear stress, and the structure (7a
17 cast products with sufficiently refined structures are produced.

なお、前記実施例では、主加圧棒中に単一の副加圧棒を
内蔵さ往たが、キャビティの形状、溶湯祠質に応じて複
数本の副加圧棒を内蔵さVることができ、その際、副加
圧棒を同心円状の組合Uとしても良い。
In the above embodiment, a single sub-pressure rod was built into the main pressure rod, but a plurality of sub-pressure rods may be built-in depending on the shape of the cavity and the quality of the molten metal. In this case, the sub-pressure rods may be formed into a concentric combination U.

l旦立A皿 以上の説明から明らかな様に、本発明のダイカスト出金
ム1!では、金型壁部を貫通する主加圧棒に、該1加8
ニ捧の先端にて出没する少なくとも一木の副加圧棒を内
蔵させ、主加圧棒中に形成されたシリンダー空に副加圧
棒と一体のピストンを収納するととしに、該シリンダー
空に主加圧棒用作動油を尋さ、二次加圧圧力を作用させ
るために溶湯中に前進した主加圧棒が停止した状態で、
副加圧棒のみを前進さl!1″:Iる様になしたため、
主加圧棒周囲の凝固した溶湯に過大な圧力を印加するこ
となく、主加圧棒の先端1)ム方に位置する未凝固溶湯
に副加圧棒をもって十分な二次加圧圧力を作用さするこ
とができ、欠陥のない緻密i!1′1織構)Δの鋳造品
が得られる。
As is clear from the above explanation, the die casting dispenser of the present invention 1! In this case, the main pressure rod penetrating the mold wall is
At least one wooden auxiliary pressure rod that retracts from the tip of the rod is built in, and a piston integrated with the auxiliary pressure rod is housed in a cylinder formed in the main pressure rod. Check the hydraulic oil for the main pressurizing rod, and with the main pressurizing rod, which has advanced into the molten metal and stopped, in order to apply secondary pressurizing pressure,
Move only the auxiliary pressure rod forward! 1″: Because I did it like this,
Without applying excessive pressure to the solidified molten metal around the main pressure rod, sufficient secondary pressure is applied by the auxiliary pressure rod to the unsolidified molten metal located toward the tip of the main pressure rod. Detailed and defect-free i! 1′1 weave structure) A casting product of Δ is obtained.

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

第1図は公知に係るダイカスト・用金型および二次用り
一用加圧棒の要部説明図、第2図は本発明の一実施例に
係るダイカスト装置の概略図、第3図はその要部拡大図
、第4図は該ダイカスト装置の加圧棒が前進して金型内
の溶湯に二次加圧圧力が印加された状態を示す図、第5
図は該ダイカストv4i?ffの射出ラムによる溶湯充
填圧と加圧棒による二次加圧圧力との時間的関係を示す
グラフである。 10・・・ダイカスト装に、12・・・基台、14・・
・固定プラテン、16・・・固定プラテン、18・・・
連結棒、20・・・−nJ !FJJプラテン、22・
・・固定金gJ、24・・・ITJ勤金型、2G・・・
保持体、28・・・押出し板、30・・・保持棒、32
・・・押出しビン、34・・・押出し用油圧シリンダ−
,3G・・・即し棒、38−・・可動プラテン駆動用油
圧シリング−140・・・押し棒、42・・・射出用油
圧シリンダー、44・・・ピストン、46・・・射出ラ
ム、48・・・支持棒、50・・・射出スリーブ、52
・・・注渇口、54・・・保持棒、5G・・・二次加圧
用油圧シリンダ−,58・・・主ピストン、60・・・
1加1棒、62・・・シリング−室、64・・・n1ピ
ストン、G6・・・副加圧杯、G8・・・油圧制御系、
70・・・油圧ポンプ、72・・・油路、74・・・シ
ーケンスバルブ、7G・・・油路、78・・・切換弁、
80・・・流量調整弁、82・・・加圧棒ill進用油
路、84・・・加圧棒後30用油路、8G・・・未凝固
溶湯、A・・・キャピテイ。
FIG. 1 is an explanatory diagram of the main parts of a known die-casting mold and a pressure rod for secondary use, FIG. 2 is a schematic diagram of a die-casting device according to an embodiment of the present invention, and FIG. Fig. 4 is an enlarged view of the main part of the die-casting device, and Fig. 4 is a drawing showing a state in which the pressurizing rod of the die-casting device moves forward and secondary pressurizing pressure is applied to the molten metal in the mold.
The figure shows the die cast v4i? ff is a graph showing the temporal relationship between the molten metal filling pressure by the injection ram and the secondary pressurizing pressure by the pressurizing rod. 10...Die-cast mounting, 12...Base, 14...
・Fixed platen, 16...Fixed platen, 18...
Connecting rod, 20...-nJ! FJJ platen, 22・
・Fixed metal gJ, 24...ITJ metal mold, 2G...
Holding body, 28... Extrusion plate, 30... Holding rod, 32
... Extrusion bottle, 34... Hydraulic cylinder for extrusion
, 3G... Immediate rod, 38-... Hydraulic sill for movable platen drive -140... Push rod, 42... Hydraulic cylinder for injection, 44... Piston, 46... Injection ram, 48 ... Support rod, 50 ... Injection sleeve, 52
...Drinking port, 54...Holding rod, 5G...Hydraulic cylinder for secondary pressurization, 58...Main piston, 60...
1 pressure 1 rod, 62... Schilling chamber, 64... n1 piston, G6... auxiliary pressure cup, G8... hydraulic control system,
70... Hydraulic pump, 72... Oil path, 74... Sequence valve, 7G... Oil path, 78... Switching valve,
80...Flow rate adjustment valve, 82...Pressure rod ill advancing oil path, 84...Oil path for pressure rod rear 30, 8G...Unsolidified molten metal, A...Capity.

Claims (1)

【特許請求の範囲】 金型のキャビティ内に溶湯を充填し、溶湯が凝固する以
前にキャビティ内に加圧棒を前進させて溶湯に二次加圧
圧力を作用させる形式のダイカスト装置において、 金型壁部を貫通する主加圧棒が、該主加圧棒の先端にて
出没する少なくとも一本の副加圧棒を内蔵しており、主
加圧棒巾に形成されたシリンダー空に収納されるととも
に主加圧棒の作動油が直接作用するピストンと一体に前
記副加圧棒が形成されていることを特徴とするダイカス
ト装置。
[Scope of Claims] A die-casting device of a type in which a cavity of a mold is filled with molten metal and a pressure rod is advanced into the cavity to apply a secondary pressurizing pressure to the molten metal before the molten metal solidifies. The main pressure rod that penetrates the mold wall contains at least one sub-pressure rod that appears and retracts at the tip of the main pressure rod, and is housed in a cylinder formed in the width of the main pressure rod. A die-casting device characterized in that the auxiliary pressure rod is formed integrally with a piston on which the hydraulic oil of the main pressure rod acts directly.
JP3150987A 1987-02-16 1987-02-16 Die-casting apparatus Pending JPS63199059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3150987A JPS63199059A (en) 1987-02-16 1987-02-16 Die-casting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3150987A JPS63199059A (en) 1987-02-16 1987-02-16 Die-casting apparatus

Publications (1)

Publication Number Publication Date
JPS63199059A true JPS63199059A (en) 1988-08-17

Family

ID=12333187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3150987A Pending JPS63199059A (en) 1987-02-16 1987-02-16 Die-casting apparatus

Country Status (1)

Country Link
JP (1) JPS63199059A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02182364A (en) * 1988-12-30 1990-07-17 Kobe Steel Ltd High pressure casting method for casting
JP2013226567A (en) * 2012-04-24 2013-11-07 Toyota Motor Corp Die-casting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02182364A (en) * 1988-12-30 1990-07-17 Kobe Steel Ltd High pressure casting method for casting
JP2013226567A (en) * 2012-04-24 2013-11-07 Toyota Motor Corp Die-casting apparatus

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