JPH03128159A - Die casting apparatus - Google Patents
Die casting apparatusInfo
- Publication number
- JPH03128159A JPH03128159A JP26684589A JP26684589A JPH03128159A JP H03128159 A JPH03128159 A JP H03128159A JP 26684589 A JP26684589 A JP 26684589A JP 26684589 A JP26684589 A JP 26684589A JP H03128159 A JPH03128159 A JP H03128159A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- cavity
- release agent
- passage
- vacuum
- 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
- 238000004512 die casting Methods 0.000 title claims description 15
- 238000002347 injection Methods 0.000 claims abstract description 37
- 239000007924 injection Substances 0.000 claims abstract description 37
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims description 66
- 239000006082 mold release agent Substances 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 37
- 238000005266 casting Methods 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 7
- 239000003595 mist Substances 0.000 claims description 5
- 238000005429 filling process Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 2
- 238000003825 pressing Methods 0.000 claims 1
- 238000011049 filling Methods 0.000 abstract description 7
- 238000003860 storage Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000011888 autopsy Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は可動型と固定型とを型締めすることによって１
両型間に形成されるキャビテー内に、射出シリンタース
リーブ内にある溶湯をプランジャーチップによりゲート
通路を介して射出し、成形するダイカスト装置に関する
ものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a
The present invention relates to a die casting device that injects molten metal in an injection cylinder sleeve into a cavity formed between two molds through a gate passage using a plunger tip to form the mold.
〔従来の技術〕
従来、ダイカスト装置における離型剤の塗布方法には、
例えば特開昭６２−２５９６３５号がある。これは、金
型の型閉り直前若しくは型閉め後、射出シリンダースリ
ーブ内に進入させた雛型剤冷血ノズルから離型剤を噴射
させて、キャビテー而及び中子の周囲に離型剤を塗布し
たものである。[Prior Art] Conventionally, the method of applying a mold release agent in a die-casting machine includes:
For example, there is Japanese Patent Application Laid-Open No. 62-259635. This is done by injecting a mold release agent from a mold agent cold-blooded nozzle inserted into the injection cylinder sleeve just before or after the mold is closed, and applying the mold release agent to the cavity and around the core. This is what I did.
かかる従来のダイカスト装置による離型剤の塗布方法に
よると、キャビテー内に向けて噴射される離型剤は、射
出シリンダースリーブに連なるキャビテーの開口部より
キャビテー内へ噴射供給されるものであり、キャビテー
内に噴射された離型剤はキャビテー内の空気と混合しつ
つ、キャビテー内に拡散する。According to such a conventional mold release agent application method using a die-casting device, the mold release agent injected into the cavity is injected and supplied into the cavity from the opening of the cavity that is connected to the injection cylinder sleeve. The mold release agent injected into the mold diffuses into the cavity while mixing with the air inside the cavity.
しかしながら、射出シリンダースリーブに連なるキャビ
テーへの開口部より離れたキャビテーの部位、あるいは
細孔、深孔、深溝、等の有効断面積の小なるキャビテー
の部位、における離型剤の塗布が短時間の間に充分行な
われない場合がある。これはキャビテーが大型化し、し
かも形状が複雑化するに伴ない一層顕著にあられれる。However, it is difficult to apply a mold release agent in a short time to areas of the cavity that are remote from the opening to the cavity that connects to the injection cylinder sleeve, or areas of the cavity that have a small effective cross-sectional area such as pores, deep holes, and deep grooves. There are times when it is not done enough. This becomes more noticeable as the cavity becomes larger and more complex in shape.
このことは、略大気圧状態にあるキャビテー内へ＃型剤
を噴射したことによるものである。This is due to the # type agent being injected into the cavity at approximately atmospheric pressure.
本発明になるダイカスト装置は、前記問題点に鑑み威さ
れたもので、キャビテーの全ての部位に対して良好に離
型剤を塗布することを目的としたものであり、可動型と
固定型とを型締めすることによって形成されるキャビテ
ーのキャビテー内圧力Ｐ１を真空圧力状態とし、一方間
型剤を含む空気との霧状の混合気の混合気圧力Ｐ２を大
気圧力を含む加圧力状態とし、前記大気圧力を含む加圧
力状態Ｐ２にある混合気を真空圧力状態Ｐ１にあるキャ
ビテー内へ充填させる離型剤充填工程を有するものであ
る。The die-casting device of the present invention was developed in view of the above-mentioned problems, and is intended to apply a mold release agent to all parts of the cavity well, and has two types: a movable type and a fixed type. The internal pressure P1 of the cavity formed by clamping the mold is set to a vacuum pressure state, while the mixture pressure P2 of the atomized mixture with air containing a molding agent is set to a pressurized pressure state including atmospheric pressure, The mold release agent filling step includes filling the air-fuel mixture in a pressurized pressure state P2 including the atmospheric pressure into the cavity in a vacuum pressure state P1.
可動型と固定型とを型締めすることによってキャビテー
を形成し、このキャビテーを真空源に連なる真空引き通
路を介して真空引きして、キャビテー内を真空圧力状態
とする。A cavity is formed by clamping the movable mold and the fixed mold, and the cavity is evacuated via a vacuum passage connected to a vacuum source to bring the inside of the cavity into a vacuum pressure state.
次いで、大気圧力を含む加圧力状態にある離型剤を含む
空気との霧状混合気を混合気供給路を介してキャビテー
内へ充填させるもので、これによってキャビテーの全て
の部位に対して離型剤を塗布できる。Next, the atomized mixture with air containing a mold release agent under pressurized conditions including atmospheric pressure is filled into the cavity through the mixture supply path, thereby separating all parts of the cavity. Can apply molding agent.
以下、本発明の一実施例を第１図によって説明する。 An embodiment of the present invention will be described below with reference to FIG.
ｌはキャビテーであって、固定型２Ａと可動型２Ｂとを
型締めすることによって、固定型２Ａと可動型２Ｂとの
間に形成される。３は円筒状の射出シリンタースリーブ
であって、その一端部（第１図において左側）は開口し
、他端部（第１図において右側）の外周近傍には注湯口
５が穿設される。また、射出シリンダースリーブ３内に
はプランジャーチップ６が摺動自在に配置されるもので
、このプランジャーチップ６は図示せぬ射出シリンター
にピストン７にて一体的に連結される。A cavity l is formed between the fixed mold 2A and the movable mold 2B by clamping the fixed mold 2A and the movable mold 2B. 3 is a cylindrical injection cylinder sleeve, one end (left side in FIG. 1) is open, and a pouring port 5 is bored near the outer periphery of the other end (right side in FIG. 1). . Further, a plunger tip 6 is slidably disposed within the injection cylinder sleeve 3, and the plunger tip 6 is integrally connected to an injection cylinder (not shown) by a piston 7.
８は、離型剤貯槽であり、この離型剤貯槽８内には、植
物油、鉱物油、等にアルミニウムの微粉その他のものが
混合された離型剤が貯溜される。8 is a mold release agent storage tank, and in this mold release agent storage tank 8, a mold release agent that is a mixture of vegetable oil, mineral oil, etc., aluminum fine powder, and other substances is stored.
尚、この離型剤については特に限定されない。Note that this mold release agent is not particularly limited.
そして、離型剤貯槽８内の離型剤は、液体ポンプＦを備
えた離型剤供給路１０を介して密閉状の混合気形成室９
内へ供給される。尚、液体ポンプＦに代えて離型剤貯槽
８内を加圧しても離型剤を混合気形成室９内へ供給でき
る。Then, the mold release agent in the mold release agent storage tank 8 is supplied to a sealed mixture forming chamber 9 through a mold release agent supply path 10 equipped with a liquid pump F.
supplied within. Note that the release agent can also be supplied into the mixture forming chamber 9 by pressurizing the release agent storage tank 8 instead of using the liquid pump F.
一方、混合気形成室９内へ突出して開口する離型剤供給
路１０の開口部１０Ａの外周には、開口部１０Ａの外周
に対して環状の間隙をもった圧縮空気通路１１が開口す
るもので、この圧縮空気通路１１には空気ポンプ１２に
よって圧縮された空気が供給される。On the other hand, a compressed air passage 11 having an annular gap with respect to the outer periphery of the opening 10A is opened at the outer periphery of the opening 10A of the mold release agent supply passage 10 that projects into the mixture forming chamber 9. The compressed air passage 11 is supplied with compressed air by an air pump 12.
而して、液体ポンプＦと空気ポンプ１２とを駆動すると
、離型剤供給路ｌＯの開口部１０Ａより離型剤貯槽８内
の離型剤が噴射され、一方圧縮空気通路１１より圧縮空
気が供給される。そして、離型剤供給路１０の混合気形
成室９への開口部１０Ａの外周に対して環状の間隙を有
する圧縮空気通路１１を開口したことによって、離型剤
と圧縮空気とが混合気形成室９への開口Ａ［２Ｅ傍にて
混合され、混合気形成室９内において離型剤を含む空気
との微細な霧状の混合気が形成されることになり、この
混合気が混合気形成室９内に浮遊する。この混合気中に
含まれる離型剤の粒子の大きさは微細であればある程好
ましいもので、この粒子の大きさは、主に液体ポンプＦ
及び空気ポンプ１２の吐出圧力によって決まる。When the liquid pump F and the air pump 12 are driven, the release agent in the release agent storage tank 8 is injected from the opening 10A of the release agent supply path 10, while compressed air is injected from the compressed air path 11. Supplied. By opening the compressed air passage 11 having an annular gap to the outer periphery of the opening 10A of the mold release agent supply path 10 to the mixture formation chamber 9, the mold release agent and compressed air form a mixture. The air mixture is mixed near the opening A [2E to the chamber 9, and a fine mist mixture with the air containing the mold release agent is formed in the air mixture formation chamber 9. Floating within the forming chamber 9. It is preferable that the particle size of the mold release agent contained in this mixture is as fine as possible, and the particle size is mainly determined by the liquid pump
and the discharge pressure of the air pump 12.
また、この混合気の圧力Ｐ２は大気圧力（７６０Ｔｏｒ
ｒ）を含む加圧力状態（７８０Ｔｏｒｒ以上）とするも
ので混合気形成室９の室容積、液体ポンプＦ、空気ポン
プ１２の吐出圧力によりその圧力が決定される。尚、液
体ポンプＦ、空気ポンプ１２を連続して運転する際には
、混合気形成室９と離型剤貯槽８とを連絡するドレン通
路１３に設けたドレンコック１４を開放することによっ
て、凝縮された離型剤を再び離型剤貯槽８へ戻すことが
できる。Moreover, the pressure P2 of this mixture is atmospheric pressure (760 Torr
The pressure is determined by the volume of the mixture forming chamber 9 and the discharge pressures of the liquid pump F and the air pump 12. In addition, when operating the liquid pump F and the air pump 12 continuously, by opening the drain cock 14 provided in the drain passage 13 that communicates the mixture forming chamber 9 and the release agent storage tank 8, the condensation can be removed. The released mold release agent can be returned to the mold release agent storage tank 8 again.
そして、混合気形成室９は混合気供給路１５を介してキ
ャビテーｌ内へ連絡されて開口するもので、この混合気
供給路１５内には混合気供給路開閉弁１６（以下混合気
弁という）が配置されて、混合気供給路１５を開閉して
キャビテー１内への混合気の供給を制御する。The mixture forming chamber 9 is connected to and opens into the cavity 1 through a mixture supply passage 15, and a mixture supply passage opening/closing valve 16 (hereinafter referred to as a mixture valve) is provided in the mixture supply passage 15. ) is arranged to open and close the mixture supply path 15 to control the supply of the mixture into the cavity 1.
１７は、真空ポンプ等の真空源Ｖに連なる真空引き通路
であり、この真空引き通路１７には真空引き通路１７を
開閉する真空引き通路開閉弁ｔＳ （以下真空弁）が配
置される。Reference numeral 17 denotes a vacuum passage connected to a vacuum source V such as a vacuum pump, and a vacuum passage opening/closing valve tS (hereinafter referred to as a vacuum valve) for opening and closing the vacuum passage 17 is disposed in this vacuum passage 17.
１９は、射出シリンダースリーブ３の長子軸心線ｘ−ｘ
に略同心に設けたシリンダー状の切換弁室であり、この
切換弁室１８の第１図における右端は第１開口部１９Ａ
にて射出シリンダースリーブ３内に連絡され、切換弁室
１９の第１図における上部には、第２開口部１９Ｂが開
口し、この第２開口部１９Ｂは、キャビテーｌに連絡さ
れたゲート通路２０に連絡される。また、切換弁室１９
の第１図における下部には、第３開口部１９Ｃが開口し
、この第３開口部１θＣは真空引き通路１７に連絡され
る。19 is the longitudinal axis x-x of the injection cylinder sleeve 3;
The right end of this switching valve chamber 18 in FIG. 1 is a first opening 19A.
A second opening 19B is opened in the upper part of the switching valve chamber 19 in FIG. will be contacted. In addition, the switching valve chamber 19
A third opening 19C is opened in the lower part of FIG.
２１は前記切換弁室１８内に配置され、切換弁室１８内
を射出シリンダースリーブ３の長手軸心線Ｘ−Ｘ方向に
移動する円筒状の切換弁体であり、この切換弁体２１の
略中間部に縮小径部２１Ａを設けることによって、縮小
径部２１Ａの一側端部（第１図において右側）に切換弁
室１９の内壁に気密的に挿入されるとともに第１開口部
１９Ａに設けた弁座１９Ｄに接して第１開口部１９Ａを
閉塞する第１筒状弁部２１Ｂが形成され、縮小径部２１
Ａの他側端部（第１図において左側）に切換弁室１９の
内壁に気密的に挿入される第２筒状弁部２ＩＣが形成さ
れる。Reference numeral 21 designates a cylindrical switching valve body that is disposed within the switching valve chamber 18 and moves within the switching valve chamber 18 in the longitudinal axis XX direction of the injection cylinder sleeve 3; By providing the reduced diameter portion 21A in the intermediate portion, the reduced diameter portion 21A is airtightly inserted into the inner wall of the switching valve chamber 19 at one end (on the right side in FIG. 1), and is provided in the first opening 19A. A first cylindrical valve portion 21B is formed that contacts the valve seat 19D and closes the first opening 19A, and the reduced diameter portion 21
A second cylindrical valve portion 2IC is formed at the other end (left side in FIG. 1) of A to be airtightly inserted into the inner wall of the switching valve chamber 19.
そして、この切換弁体２１によって、第１開口部１９Ａ
と第２開口部１９Ｂとの連通が断たれた時、第２開口部
１９Ｂと第３開口部１９Ｃが連通され、−方、第１開口
部１９Ａと第２開口部１９Ｂとの連通時において、第２
開口部１９Ｂと第３開口部１９Ｃとの連通が断たれるも
のである。Then, by this switching valve body 21, the first opening 19A
When the communication between the first opening 19A and the second opening 19B is cut off, the second opening 19B and the third opening 19C are communicated, and when the first opening 19A and the second opening 19B are communicating, Second
Communication between the opening 19B and the third opening 19C is cut off.
また、２２は切換弁体２１に対接されたエヤーシリンダ
ー、油圧シリンダー、スプリング等のダンパー部材であ
り、射出シリンダースリーブ３内の溶湯圧力による切換
弁体２１の移動（第１図において左方向の移動）に対向
する弾性力を有する。Further, 22 is a damper member such as an air cylinder, a hydraulic cylinder, a spring, etc. that is in contact with the switching valve body 21, and the switching valve body 21 is moved by the pressure of the molten metal in the injection cylinder sleeve 3 (in the left direction in FIG. 1). It has an elastic force that opposes the movement (movement).
かかるダイカスト装置における、鋳造の工程について説
明する。The casting process in such a die-casting device will be explained.
ダイカストの鋳造工程において、鋳造のｌサイクルは、
離型剤塗在工程、注湯工程、射出工程。In the die casting process, the casting cycle is:
Mold release agent coating process, pouring process, injection process.
凝固工程、製品取出し工程、とに大別される。It is roughly divided into the solidification process and the product extraction process.
（便宜上離型剤塗布工程を最初とした）離型剤塗布工程
は、キャビテー１内に離型剤を冷冷する工程であり、注
湯工程は射出シリンダースリーブ３内に注湯口５より溶
湯を注ぐ工程であり、射出工程は射出シリンダースリー
ブ３内に注湯された溶湯を、プランジャーチップ６を移
動させることによってゲート通路２０を介してキャビテ
ー１内へ溶湯を射出する工程であり、凝固工程はキャビ
テー１内へ射出された溶湯をキャビテー１内にて固化さ
せる工程であり、製品取出し工程はキャビテー１内で固
化した製品をキャビテー１より取りだす工程である。The mold release agent application process (for convenience, the mold release agent application process is set first) is a process in which the mold release agent is cooled in the cavity 1, and the molten metal pouring process is a process in which molten metal is poured into the injection cylinder sleeve 3 from the pouring port 5. The injection process is a process in which the molten metal poured into the injection cylinder sleeve 3 is injected into the cavity 1 through the gate passage 20 by moving the plunger tip 6, and the solidification process is a solidification process. is a process in which the molten metal injected into the cavity 1 is solidified in the cavity 1, and the product removal process is a process in which the product solidified in the cavity 1 is taken out from the cavity 1.
ここで各工程について詳述する。まず、離型剤塗布工程
において、可動型２Ｂは固定型２Ａに出接し、型、締め
状態にあり、両型２Ａ、 ２Ｂによりキャビテー１が形
成されるものである。そして、この離型剤塗布工程は経
時順にみて次にのべる第１の工程と第２の工程とに区分
される。Each step will now be explained in detail. First, in the mold release agent application step, the movable mold 2B comes into contact with the fixed mold 2A and is in a mold-clamped state, and the cavity 1 is formed by both molds 2A and 2B. This mold release agent application step is divided into a first step and a second step described below in chronological order.
その第１の工程はキャビテー内真空引き工程である。こ
の工程において、混合気弁１６は混合気供給路１５を閉
じ、真空弁１８は真空引き通路１７を開放する。The first step is a vacuum evacuation step within the cavity. In this step, the mixture valve 16 closes the mixture supply path 15 and the vacuum valve 18 opens the evacuation path 17.
一方、切換弁体２１は、射出シリンダースリーブ３内が
加圧状態にないことからダンパー部材２２によって射出
シリンダースリーブ３側（第１図において右側）に押圧
されるもので、これによると切換弁体２１の第１筒状弁
部２１Ｂの右端面Ｒが第１開口部＋９Ａの段部１９Ｄに
当接するとともに縮小径部２１Ａが第２開ロ部１９Ｂ、
第３開口部１９ｃにのぞんで配置される。従って、第１
開口部１９Ａと第２開口部１９Ｂとの連通は断たれ、第
２開口部１９Ｂと第３開口部１９Ｃとが連通状態となる
ものであり、以下この状態を切換弁体２１の第一状態と
いう。On the other hand, since the inside of the injection cylinder sleeve 3 is not pressurized, the switching valve body 21 is pressed toward the injection cylinder sleeve 3 side (to the right in FIG. 1) by the damper member 22. The right end surface R of the first cylindrical valve part 21B of 21 contacts the step part 19D of the first opening +9A, and the reduced diameter part 21A contacts the second opening part 19B,
It is arranged so as to look into the third opening 19c. Therefore, the first
The communication between the opening portion 19A and the second opening portion 19B is cut off, and the second opening portion 19B and the third opening portion 19C are in a communication state, and this state is hereinafter referred to as the first state of the switching valve body 21. .
これによると閉塞状態にあるキャビテー１内には真空引
き通路１７より真空源Ｖにて生起される真空圧力が第３
開ロ部１９Ｃ１切換弁室１９．第２開口ｇＢ１９Ｂ、ゲ
ート通路２０を介して導入されるものであり、キャビテ
ーｌ内の圧力Ｐ１は真空圧力状態（７５９Ｔａｒｒ以下
）に保持される。According to this, the vacuum pressure generated by the vacuum source V from the vacuum passage 17 is applied to the cavity 1 in the closed state.
Opening part 19C1 switching valve chamber 19. It is introduced through the second opening gB19B and the gate passage 20, and the pressure P1 inside the cavity I is maintained at a vacuum pressure state (759 Tarr or less).
次いで第２の工程はキャビテーｌ内への離型剤充填工程
である。この工程において、混合気弁１Ｂは混合気供給
路１５を開放し、真空弁１８は真空引き通路１７を閉じ
、一方切換弁体２１は前述した第１の状態にある。Next, the second step is a step of filling the mold release agent into the cavity I. In this step, the mixture valve 1B opens the mixture supply passage 15, the vacuum valve 18 closes the evacuation passage 17, and the switching valve body 21 is in the first state described above.
これによると、混合気形成室９内で形成された離型剤を
含む空気との微細な霧状の混合気で、且つその混合気の
圧力Ｐ２が大気圧力（７６０Ｔｏｒｒ）を含む加圧力状
態（７８０Ｔｏｒｒ以上）にある混合気は、混合気供給
路１５よりキャビテー１内へ一気に充填され、キャビテ
ー１を形成する固定型２Ａのキャビテー面２Ｃ及び可動
型２Ｂのキャビテー面２Ｉ］さらには図示せぬ中子の周
面に離型剤が塗布される。而してキャビテー１に対して
、離型剤を塗布できたものである。According to this, the mixture is a fine mist mixture with the air containing the mold release agent formed in the mixture forming chamber 9, and the pressure P2 of the mixture is a pressurized state (including atmospheric pressure (760 Torr)). The air-fuel mixture at a temperature of 780 Torr or more is filled at once into the cavity 1 from the air-fuel mixture supply path 15, and the cavity surface 2C of the fixed mold 2A and the cavity surface 2I of the movable mold 2B forming the cavity 1] A mold release agent is applied to the circumferential surface of the child. Thus, the mold release agent could be applied to the cavity 1.
次に注湯工程であるが、これは、プランジャーチップ６
が射出シリンダースリーブ３のもっとも右方向にあって
、開口された注湯口５より溶湯を射出シリンダースリー
ブ３内に所望の量注入するものである。このとき、切換
弁体２１の各開口部１９Ａ 、 １９Ｂ 、 １９Ｃに
対する状態は、前述の第１の状態に保持されなければな
らない、従った、注湯工程ｊ±前述した離型剤塗布工程
に行なうことができる。Next is the pouring process, which involves the plunger tip 6
is located on the rightmost side of the injection cylinder sleeve 3, and a desired amount of molten metal is injected into the injection cylinder sleeve 3 through the opened pouring port 5. At this time, the state of each opening 19A, 19B, and 19C of the switching valve body 21 must be maintained in the first state described above.Therefore, the pouring process j±the release agent application process described above is performed. be able to.
射出工程は、射出シリンダースリーブ３の第１図におい
て、右方向にあるプランジャーチー２プロが射出シリン
ダーピストン７によって左方向へ移動するものであり、
このとき混合気弁１６は混合気供給路１５を閉じる。一
方、プランジャーチップ６の射出シリンダースリーブ３
内における左方向への移動によって、射出シリンダース
リーブ３内の室容積が減少し射出シリンダースリーブ３
内の圧力は上昇するもので、この上昇した圧力は、切換
弁体２１の右端面Ｒをダンパー部材２２側（第１図にお
いて左側）へ押圧する。In the injection process, in FIG. 1 of the injection cylinder sleeve 3, the plunger Chi 2 Pro located on the right side is moved to the left by the injection cylinder piston 7.
At this time, the mixture valve 16 closes the mixture supply path 15. On the other hand, the injection cylinder sleeve 3 of the plunger tip 6
Due to the leftward movement within the injection cylinder sleeve 3, the chamber volume within the injection cylinder sleeve 3 decreases, and the injection cylinder sleeve 3
The pressure inside increases, and this increased pressure presses the right end surface R of the switching valve body 21 toward the damper member 22 (left side in FIG. 1).
これによると、切換弁体２１はダンパー部材２２の射出
シリンダースリーブ３側への抗力（第１図において右側
）に抗して切換弁室１９内を左方向へ移動するもので、
切換弁体２１の第１筒状弁部２１Ｂにて第１開口部１９
Ａと第２開口部１８Ｂとが連通ずるとともに第２開口部
１９Ｂと第３開口部１９Ｃとの連通が断たれる。従って
キャビテーｌ内へ射出シリンダースリーブ３内に注腸さ
れた溶湯が、第１開ロ部１９Ａ、切換弁室１９．第２開
ロ部１９Ｂ、ゲート通路２０を介して射出されるもので
ある。この射出終了後、型締め状態にて一定時間を経過
することによってキャビテー１内に射出された溶湯が冷
却されて凝固するものでこれが凝固工程である。According to this, the switching valve body 21 moves to the left in the switching valve chamber 19 against the resistance of the damper member 22 toward the injection cylinder sleeve 3 (on the right side in FIG. 1).
The first opening 19 at the first cylindrical valve portion 21B of the switching valve body 21
A is communicated with the second opening 18B, and communication between the second opening 19B and the third opening 19C is cut off. Therefore, the molten metal injected into the injection cylinder sleeve 3 flows into the cavity 1 through the first opening portion 19A and the switching valve chamber 19. It is injected through the second opening portion 19B and the gate passage 20. After the injection is completed, the molten metal injected into the cavity 1 is cooled and solidified after a certain period of time has passed in the mold clamping state, and this is the solidification process.
尚、この射出終了後において、射出シリンダースリーブ
３内の圧力は、略大気圧力に復帰するので、切換弁体２
１はダンパー部材２２にて再び射出シリンダースリーブ
側へ押圧されるので、切換弁体２１は第１状態に復帰す
る。Note that after this injection is completed, the pressure inside the injection cylinder sleeve 3 returns to approximately atmospheric pressure, so the switching valve body 2
1 is again pressed toward the injection cylinder sleeve by the damper member 22, so that the switching valve body 21 returns to the first state.
次に製品取出し工程であるが、これに先立って可動型２
Ｂは固定型２Ａより離れて型開き状態となり、キャビテ
ー１にて凝固して、底形された製品は例えば可動型２Ｂ
のキャビテー面２Ｄに取り付いた状態にて可動型２Ｂと
ともに移動し、しかる後に図示せぬ押し出ビンによって
可動型２Ｂのキャビテー面２Ｄより押し出され、可動型
２Ｂのキャビテー面２Ｄより製品が取り外されるもので
ある０以上で鋳造の１サイクルを終了する。Next is the product removal process, but prior to this, the movable mold 2
B separates from the fixed mold 2A and becomes open, solidifies in the cavity 1, and the bottom-shaped product is transferred to the movable mold 2B, for example.
The product is attached to the cavity surface 2D of the movable mold 2B and moves together with the movable mold 2B, and then is pushed out from the cavity surface 2D of the movable mold 2B by an unillustrated extrusion bottle, and the product is removed from the cavity surface 2D of the movable mold 2B. One cycle of casting is completed when the value is 0 or more.
第２図には、前述した鋳造の１サイクルにおける各工程
と、型の開閉状態、混合気弁、真空弁。FIG. 2 shows each process in one cycle of casting, the opening/closing state of the mold, the gas mixture valve, and the vacuum valve.
切換弁体、のそれぞれにおける開閉状態の関係を示す相
関図である。ここで、本発明になるダイカスト装置にお
ける離型剤の塗布方法について、更に詳細にみると、こ
の離型剤の塗布方法は、第１のキャビテー内真空引き工
程と、第２の離型剤充填工程とよりなるものであって、
第１のキャビテー内真空引き工程によって、可動型２Ｂ
と固定型２Ａとを型締めすることによって形成されるキ
ャビテー１を真空引き通路１７、第３開口部１８Ｃ１切
換弁室１９、第２開口部１９Ｂ、ゲート通路２０によっ
て真空圧力状態Ｐ１とし１次いで第２の離型剤充填工程
において、大気圧力を含む加圧力状態Ｐ２にある離型剤
を含む空気との霧状の混合気を混合気供給路１５よりキ
ャビテー１内に充填させたものである。It is a correlation diagram showing the relationship between the open and closed states of each of the switching valve bodies. Here, looking in more detail at the method of applying a mold release agent in the die casting apparatus according to the present invention, this method of applying a mold release agent includes a first cavity vacuuming step and a second mold release agent filling step. It consists of a process,
By the first vacuuming process inside the cavity, the movable mold 2B
The cavity 1 formed by clamping the fixed mold 2A and the fixed mold 2A is brought into a vacuum pressure state P1 by the vacuum passage 17, the third opening 18C1, the switching valve chamber 19, the second opening 19B, and the gate passage 20. In the mold release agent filling step 2, the cavity 1 is filled with an atomized mixture of air and the mold release agent in a pressurized pressure state P2 including atmospheric pressure from the mixture supply path 15.
特にキャビテーｌ内を真空圧力状態Ｐ１ としたことに
よると、細孔、深孔、深溝１等の有効断面積が小さくキ
ャビテー面より深く喰い込んだ部分を含む全てのキャビ
テー１内を均一なる真空圧力状態Ｐ１とすることができ
、この状態にあるキャビテー１内へ大気圧力を含む加圧
力状態Ｐ２にある混合気を充填させたことによると、キ
ャビテー１の隅々迄空気が充填するもので、この時空気
に混合された霧状の離型剤もまたキャビテー１の隅々迄
空気とともに充填させることができ、キャビテーｌ内に
離型剤を確実に塗布できるものである。In particular, by setting the inside of the cavity 1 to the vacuum pressure state P1, a uniform vacuum pressure is created within all the cavities 1, including the parts where the effective cross-sectional areas of the pores, deep holes, deep grooves 1, etc. are small and are cut deeper than the cavity surface. According to the fact that the air-fuel mixture in the pressurized state P2 including atmospheric pressure is filled into the cavity 1 in the state P1, the cavity 1 is filled with air to every corner. The atomized mold release agent mixed with the air can also be filled into every corner of the cavity 1 with the air, and the mold release agent can be reliably applied inside the cavity 1.
また、キャビテー内真空引き工程と、離型剤充填工程と
、よりなる離型剤塗布工程を鋳造のｉサイクルの工程の
中において複数回繰り返し行なうことによると、（凝固
−製品取出し一離型剖検布一離型剤塗布一離型剤塗布一
注渇一射出）キャビテーｌ内の真空圧力Ｐ１が大気圧力
に近い真空圧力状態（例えば８８０ Ｔｏｒｒ）におい
てもキャビテーｌへの離型剤の塗布が行なえるものであ
る。In addition, by repeating the cavity vacuuming process, mold release agent filling process, and mold release agent application process several times in the i-cycle process of casting, (solidification - product removal - mold release autopsy) Even if the vacuum pressure P1 inside the cavity l is close to atmospheric pressure (e.g. 880 Torr), the mold release agent can be applied to the cavity l. It is something that
また、４０は、混合気供給路１５の外周に設けた電熱ヒ
ーター等のヒート部材であって、このヒート部材４０は
混合気供給路１５の供給路内壁を暖めるものであり、混
合気供給路内壁が暖められることによって空気中に霧状
に混合して浮遊する離型剤の微粒子が混合気供給路内壁
に付着することを抑止できたものである。Further, reference numeral 40 denotes a heating member such as an electric heater provided on the outer periphery of the mixture supply passage 15, and this heating member 40 warms the supply passage inner wall of the mixture supply passage 15. This makes it possible to prevent particulates of the mold release agent, which are mixed and suspended in the air in the form of a mist, from adhering to the inner wall of the air-fuel mixture supply channel.
本発明になるダイカスト装置によると、次の効果を達成
できる。According to the die casting apparatus according to the present invention, the following effects can be achieved.
■キャビテーの内圧を真空圧力状態とし、離型剤を含む
空気との霧状の混合気の混合気圧力を大気圧力を含む加
圧力状態とし、加圧力状態にある混合気を真空圧力状態
にあるキャビテー内へ充填させたことによると、空気は
真空圧力状態にあるキャビテー内へ即座に充填されるも
ので、この空気に混合された霧状の離型剤もまた空気と
ともにキャビテー内へ充填され、もってキャビテー内に
離型剤を塗布できたものであり、特にキャビテー内は均
等に真空圧力状態にあることからキャビテーの隅々に渡
って離型剤を確実に塗布できたものである。■The internal pressure of the cavity is set to a vacuum pressure state, the mixture pressure of the atomized mixture with air containing a mold release agent is set to a pressurized pressure state including atmospheric pressure, and the mixture under pressurized pressure is brought to a vacuum pressure state. According to the method of filling the cavity, air is immediately filled into the cavity under vacuum pressure, and the atomized mold release agent mixed with this air is also filled into the cavity with the air. This made it possible to apply the mold release agent inside the cavity, and in particular, since the inside of the cavity was under uniform vacuum pressure, it was possible to reliably apply the mold release agent to every corner of the cavity.
■離型剤塗布工程を鋳造の１サイクル中において複数回
行なうことによると、キャビテー内の真空圧力が比較的
大気圧に近い圧力下においてもキャビテー内への離型剤
の塗布が可能となったものであり、金型合せ面から大気
への洩れが許容できるとともに真空源としての真空ポン
プ容量を比較的小とすることができ実用上好ましいもの
である。■By performing the mold release agent application process multiple times during one casting cycle, it is now possible to apply the mold release agent into the cavity even when the vacuum pressure inside the cavity is relatively close to atmospheric pressure. This is preferable from a practical point of view since leakage from the mold mating surface to the atmosphere can be tolerated and the capacity of the vacuum pump as a vacuum source can be made relatively small.
■混合気供給路を暖めるヒート部材を配置し、混合気供
給路を暖めることによると、混合気を空気とともに形成
する霧状の離型剤が混合気供給路の内壁に付着しに〈〈
なり、霧状の混合気が凝縮することなく有効にキャビテ
ー内へ供給されるので、キャビテー内における離型剤の
塗布を一層確実に行なえるものである。■ By arranging a heating member to warm the mixture supply path and warming the mixture supply path, the atomized mold release agent that forms the mixture with air will adhere to the inner wall of the mixture supply path.
Since the atomized air-fuel mixture is effectively supplied into the cavity without condensation, the release agent can be more reliably applied within the cavity.
第１図は本発明になるダイカスト装置の一実施例を示す
要部縦断面図、第２図は本発明のダイカスト装置の鋳造
のｌサイクルの工程と、型開閉状態と、混合気弁、真空
弁、切換弁体、との関徂を示す関係図である。
１ 、、、、キャビテー ２Ａ、、、、固定型２
Ｂ、、、、可動型
３ 、、、、射出シリンダースリーブ
５ 、、、、注湯口 １５．、、、混合気供
給路＋ｓ、、、、Ｈ合気供給路開閉弁（混合気弁）＋７
．、、、真空引き通路
ＩＬ、、、真空引き通路開閉弁（真空弁）１９、、、、
切換弁室 １！３Ａ、、、、第１開口部１９Ｂ
、、、、第２開口部 １９Ｃ，、、、第３開口部
２０、、、、ゲート通路 ２１．、、、切換弁体
４０、、、、ヒート部材
Ｐ、、、、、キャビテー内圧力
Ｐ２ 、、、、混合気圧力FIG. 1 is a longitudinal cross-sectional view of essential parts showing an embodiment of the die-casting device according to the present invention, and FIG. 2 shows the process of one cycle of casting of the die-casting device according to the present invention, the mold opening/closing state, the mixture valve, and the vacuum. It is a relationship diagram showing the relationship between a valve and a switching valve body. 1, Cavity 2A, Fixed type 2
B. Movable mold 3 Injection cylinder sleeve 5 Pour spout 15. ,,,Mixture supply path +s,,,,H Aiki supply path opening/closing valve (mixture valve) +7
．． , , Vacuum passage IL, , Vacuum passage opening/closing valve (vacuum valve) 19 , , ,
Switching valve chamber 1!3A,..., first opening 19B
, Second opening 19C, Third opening 20, Gate passage 21. , Switching valve body 40 , Heat member P , Cavity internal pressure P2 , Mixture pressure
Claims (3)
されるキャビテーと； 離型剤と空気との霧状の混合気をキャビテー内へ供給す
る混合気供給路と； 混合気供給路内にあって混合気供給路を開閉する混合気
供給路開閉弁と； 射出シリンダースリーブに連絡される第１開口部と、キ
ャビテーに連絡されたゲート通路に連絡される第２開口
部と、真空源に連絡された真空引き通路に連絡される第
３開口部と、がそれぞれ開口された切換弁室と； 切換弁室内に配置され、第１開口部と第２開口部との連
通時において、第２開口部と第３開口部とを遮断し、第
１開口部と第２開口部との遮断時において、第２開口部
と第３開口部とを連通する切換弁体と、真空引き通路内
にあって真空引き通路を開閉する真空引き通路開閉弁と
； よりなり、混合気供給路開閉弁にて混合気供給路を閉じ
、切換弁体にて、第１開口部と第２開口部とを遮断する
とともに第２開口部と第３開口部とを連通し、さらに真
空引き通路を真空引き通路開閉弁にて開くことによって
キャビテー内の圧力を真空圧力状態Ｐ＿１とするキャビ
テー内真空引き工程と、真空引き通路を真空引き通路開
閉弁にて閉じ、切換弁体にて第１開口部と第２開口部と
を遮断するとともに第２開口部と第３開口部とを連通し
、さらに混合気供給路開閉弁にて混合気供給路を開き、
大気圧力を含む加圧力状態Ｐ＿２にある離型剤を含む空
気との霧状の混合気を真空圧力状態Ｐ＿１にあるキャビ
テー内へ充填するキャビテー内離型剤充填工程と、より
なる離型剤塗布工程の終了後に、切換弁体によって第１
開口部と第２開口部とを連通するとともに第２開口部と
第３開口部とを遮断し、射出シリンダー内に注湯された
溶湯をゲート通路を介してキャビテー内へ射出する射出
工程と、を経時順に行なってなるダイカスト装置。(1) A cavity formed by clamping a movable mold and a fixed mold; A mixture supply path that supplies a mist mixture of a mold release agent and air into the cavity; Inside the mixture supply path a mixture supply passage opening/closing valve for opening and closing the mixture supply passage; a first opening communicating with the injection cylinder sleeve; a second opening communicating with the gate passage communicating with the cavity; and a vacuum source. a third opening communicating with a vacuum passage communicated with a vacuum passage; and a switching valve chamber having openings, respectively; A switching valve body that blocks the second opening and the third opening and communicates the second opening and the third opening when the first opening and the second opening are blocked, and a vacuum passage. a vacuum passage opening/closing valve for opening and closing the vacuum passage; the mixture supply passage opening/closing valve closes the mixture supply passage; an internal vacuum evacuation step in which the pressure within the cavity is brought to a vacuum pressure state P_1 by blocking the second opening and the third opening, and further opening the evacuation passage with a vacuum passage opening/closing valve; , the vacuum passage is closed by the vacuum passage opening/closing valve, the first opening and the second opening are shut off by the switching valve body, and the second opening and the third opening are communicated, and the air-fuel mixture is Open the mixture supply path with the supply path on/off valve,
A release agent application process consisting of an in-cavity mold release agent filling process in which a mist mixture of air containing the mold release agent in a pressurized pressure state P_2 including atmospheric pressure is filled into the cavity in a vacuum pressure state P_1; After the process is completed, the first
an injection step of communicating the opening and the second opening while blocking the second opening and the third opening, and injecting the molten metal poured into the injection cylinder into the cavity through the gate passage; A die-casting device that performs the following steps sequentially over time.
造の１サイクル中において、複数回行なってなる請求項
第１項記載のダイカスト装置。(2) The die casting device according to claim 1, wherein the mold release agent application step and the mold release agent application step are performed multiple times during one cycle of casting in the die casting device.
リンダースリーブ内の溶湯圧力と、前記溶湯圧力の切換
弁体に対する押圧力に対向する弾性力を有するダンパー
部材にて制御させてなる請求項第１項記載のダイカスト
装置。(3) The movement of the switching valve body within the switching valve chamber is controlled by the molten metal pressure in the injection cylinder sleeve and a damper member having an elastic force that opposes the pressing force of the molten metal pressure against the switching valve body. The die casting device according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26684589A JPH03128159A (en) | 1989-10-13 | 1989-10-13 | Die casting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26684589A JPH03128159A (en) | 1989-10-13 | 1989-10-13 | Die casting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03128159A true JPH03128159A (en) | 1991-05-31 |
Family
ID=17436465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26684589A Pending JPH03128159A (en) | 1989-10-13 | 1989-10-13 | Die casting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03128159A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5638921A (en) * | 1995-12-05 | 1997-06-17 | Chrysler Corporation | Die mounted unitized lubricant delivery apparatus |
| US5657833A (en) * | 1995-12-05 | 1997-08-19 | Freeman; Lewis Gene | Self-contained unitized lubricant delivery apparatus |
| US5842510A (en) * | 1996-04-12 | 1998-12-01 | Keihin Corporation | Application method of powder state mold lubricant to die-casting mold and die-casting apparatus |
| US5842509A (en) * | 1996-04-12 | 1998-12-01 | Keihin Corporation | Application method of powder mold lubricant to vacuum die-casting mold and vacuum die-casting apparatus |
| KR100715386B1 (en) * | 2004-04-20 | 2007-05-07 | 도시바 기카이 가부시키가이샤 | Diecasting device and reduced-pressure casting method |
-
1989
- 1989-10-13 JP JP26684589A patent/JPH03128159A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5638921A (en) * | 1995-12-05 | 1997-06-17 | Chrysler Corporation | Die mounted unitized lubricant delivery apparatus |
| US5657833A (en) * | 1995-12-05 | 1997-08-19 | Freeman; Lewis Gene | Self-contained unitized lubricant delivery apparatus |
| US5842510A (en) * | 1996-04-12 | 1998-12-01 | Keihin Corporation | Application method of powder state mold lubricant to die-casting mold and die-casting apparatus |
| US5842509A (en) * | 1996-04-12 | 1998-12-01 | Keihin Corporation | Application method of powder mold lubricant to vacuum die-casting mold and vacuum die-casting apparatus |
| KR100715386B1 (en) * | 2004-04-20 | 2007-05-07 | 도시바 기카이 가부시키가이샤 | Diecasting device and reduced-pressure casting method |
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