JPS6129821B2 - - Google Patents
Info
- Publication number
- JPS6129821B2 JPS6129821B2 JP14436181A JP14436181A JPS6129821B2 JP S6129821 B2 JPS6129821 B2 JP S6129821B2 JP 14436181 A JP14436181 A JP 14436181A JP 14436181 A JP14436181 A JP 14436181A JP S6129821 B2 JPS6129821 B2 JP S6129821B2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- cavity
- chamber
- feeder
- insulating material
- 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
Links
- 229910052751 metal Inorganic materials 0.000 claims description 62
- 239000002184 metal Substances 0.000 claims description 62
- 238000002347 injection Methods 0.000 claims description 35
- 239000007924 injection Substances 0.000 claims description 35
- 238000004512 die casting Methods 0.000 claims description 16
- 239000011810 insulating material Substances 0.000 claims description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000007711 solidification Methods 0.000 description 6
- 230000008023 solidification Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は、金属の収縮による引け巣の欠点のな
い健全なダイカスト製品を鋳造するダイカスト装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a die-casting apparatus for casting a sound die-cast product free from shrinkage cavities caused by metal shrinkage.
第１図は従来のダイカスト装置の金型および射
出室部の概略構造断面図で、図中１は固定金型、
２は移動金型で図示していない型開閉装置により
往復動する様になつている。３は固定型１と移動
型２の合せ面に刻設された空胴、（以下キヤビテ
イと呼ぶ）４は射出室、５は射出室４とキヤビテ
イ３とを連通する湯道、６は湯流れに方向性と速
度を与えるための堰、（以下ゲートと呼ぶ）、７は
オーバーフローである。８はガス抜きで、気体は
通過出来るが溶湯は通過出来ない程度の寸法に刻
設されている。９は射出スリーブで、射出室４と
同一芯で同一内径に作られその突出部には溶湯注
入口１０が設けられている。１１は射出プランジ
ヤーで、図示していない射出装置によつて往復動
する様になつている。１４は射出スリーブ９の溶
湯注入口１０から注湯された溶湯で、一般のダイ
カスト法では溶湯１４は射出室４の内容積に100
％注入されることはなく、通常、射出室４の内容
積の10〜80％の気体が射出室４に注入された溶湯
１４の表面上にある。 Fig. 1 is a schematic cross-sectional view of the mold and injection chamber of a conventional die-casting machine, and 1 in the figure is a fixed mold;
Reference numeral 2 denotes a movable mold which is reciprocated by a mold opening/closing device (not shown). 3 is a cavity carved in the mating surface of fixed mold 1 and movable mold 2, (hereinafter referred to as cavity) 4 is an injection chamber, 5 is a runner that communicates injection chamber 4 and cavity 3, and 6 is a flow of hot water. A weir (hereinafter referred to as a gate) for giving direction and speed to the flow, 7 is an overflow. 8 is a gas vent, and is engraved with dimensions that allow gas to pass through but not molten metal. Reference numeral 9 denotes an injection sleeve, which is made to have the same core and the same inner diameter as the injection chamber 4, and has a molten metal injection port 10 in its protruding portion. Reference numeral 11 denotes an injection plunger, which is reciprocated by an injection device (not shown). The molten metal 14 is poured from the molten metal inlet 10 of the injection sleeve 9. In the general die casting method, the molten metal 14 fills the inner volume of the injection chamber 4 with 100 ml of molten metal.
Usually, 10 to 80% of the internal volume of the injection chamber 4 is on the surface of the molten metal 14 injected into the injection chamber 4.
此の様な従来の一般的なダイカスト装置では溶
湯注入口１０に溶湯１４を注入し、これを射出プ
ランジヤー１１で加圧しながらキヤビテイ３に圧
入して鋳造を行うときに製品に引け巣が出来やす
い欠点があつた。 In conventional general die-casting equipment like this, the molten metal 14 is injected into the molten metal inlet 10, and when the molten metal 14 is pressurized by the injection plunger 11 and press-fitted into the cavity 3 to perform casting, shrinkage cavities are likely to occur in the product. There were flaws.
この原因は第２図に示すように射出プランジヤ
ー１１が溶湯１４をキヤビテイ３に圧入完了後、
溶湯１４の温度が下ると、両金型１，２内の溶湯
１４は綾線で示す外側から凝固しはじめ、溶湯１
４の温度がさらに下ると、溶湯１４の内部の圧力
は低下して収縮しようとするが、このときキヤビ
テイ３の内部に溶湯の補充、すなわち射出プラン
ジヤー１１による加圧が行なわれないと溶湯１４
内に真空胴が形成され、これが引け巣である。 The reason for this is that, as shown in FIG. 2, after the injection plunger 11 completes press-fitting the molten metal 14 into the cavity 3,
When the temperature of the molten metal 14 decreases, the molten metal 14 in both molds 1 and 2 begins to solidify from the outside indicated by the twill lines, and the molten metal 1
When the temperature of the molten metal 4 further decreases, the pressure inside the molten metal 14 decreases and the molten metal 14 tends to contract. At this time, unless the inside of the cavity 3 is replenished with molten metal, that is, pressurized by the injection plunger 11, the molten metal 14
A vacuum shell is formed inside, and this is the shrinkage cavity.
このように従来、一般に行なわれているダイカ
スト法には非常に多くの長所がある反面で重大な
欠点もある。即ち、この種のダイカスト法では薄
肉で複雑形状の製品が容易に鋳造出来、製品の表
面が美しく寸法精度が高い、生産性が非常に良い
等の優れた長所があるが、一方、前述したように
耐圧性、強度、熱処理性に大きな障害となる引け
巣が多発しやすい重大な欠点があつた。この欠点
の要因は従来使用されているダイカスト用金型の
構造、鋳造機の性能、鋳造副資材の性質鋳造条件
等に欠陥があるためであるが、引け巣の原因は、
溶湯を金型に圧入完了した状態で溶湯の表面がキ
ヤビテイの壁面、湯道の壁面、射出室内面、射出
プランジヤー端面等の金属面に密着し溶湯の熱エ
ネルギーが急速に奪われるようになるからであ
る。 As described above, although the conventionally commonly used die casting method has many advantages, it also has serious drawbacks. In other words, this type of die casting method has excellent advantages such as being able to easily cast products with thin walls and complex shapes, producing beautiful product surfaces with high dimensional accuracy, and very high productivity. However, it has a serious drawback that it tends to produce many shrinkage cavities, which is a major problem in pressure resistance, strength, and heat treatability. The causes of this defect are defects in the structure of conventionally used die casting molds, the performance of casting machines, the properties of casting auxiliary materials, casting conditions, etc., but the cause of shrinkage cavities is
After the molten metal has been press-fitted into the mold, the surface of the molten metal comes into close contact with metal surfaces such as the walls of the cavity, the walls of the runner, the inside of the injection chamber, the end of the injection plunger, etc., and the thermal energy of the molten metal is rapidly absorbed. It is.
本発明はかかる点にかんがみなされたもので従
来のダイカスト法の長所を損うことなく引け巣が
発性せず、また溶湯全体が凝固するまで高圧で加
圧することにより金属組織が緻密化された健全な
製品を鋳造することを可能にしたダイカスト装置
を提供するものである。 The present invention was developed in consideration of these points, and does not impair the advantages of the conventional die casting method, does not generate shrinkage cavities, and also densifies the metal structure by applying high pressure until the entire molten metal solidifies. The present invention provides a die casting device that makes it possible to cast sound products.
以下本発明の詳細を図面により説明する。 The details of the present invention will be explained below with reference to the drawings.
第３図は本発明の実施例を示す金型および射出
室部の断面図で、図中、第１図と同一作用のもの
は同一符号で示して説明を省略する。射出室１５
は従来のダイカスト装置と異なり該射出室１５の
型合せ面に近い部分に後述する断熱材が剥離しな
いように射出スリーブ９の内径よりも大きい内径
凹部を有する大口径部１６を設けてあり、此の大
口径部１６の内面は図に示す太線部に酸化チタン
やセラミツク等の断熱材でコーテイングされてい
る。 FIG. 3 is a cross-sectional view of a mold and an injection chamber showing an embodiment of the present invention. In the figure, parts having the same functions as those in FIG. Injection chamber 15
Unlike conventional die-casting machines, a large-diameter portion 16 having an inner diameter concave portion larger than the inner diameter of the injection sleeve 9 is provided in a portion of the injection chamber 15 near the mold-matching surface to prevent the heat insulating material described later from peeling off. The inner surface of the large diameter portion 16 is coated with a heat insulating material such as titanium oxide or ceramic at the thick line portion shown in the figure.
１７は射出室１５とキヤビテイ３を連通する湯
道で、此の湯道１７も溶湯接触面が酸化チタンや
セラミツク等の断熱材でコーテイングされてい
る。２０は溶湯の流れに方向性を与えるゲート
で、此の部分も溶湯接触面が酸化チタンやセラミ
ツク等断熱材でコーテイングされている。 A runner 17 communicates the injection chamber 15 and the cavity 3, and the molten metal contact surface of the runner 17 is coated with a heat insulating material such as titanium oxide or ceramic. Reference numeral 20 denotes a gate that gives directionality to the flow of the molten metal, and the molten metal contact surface of this part is also coated with a heat insulating material such as titanium oxide or ceramic.
２１は押湯の働きをさせるための押湯溶湯室
で、酸化チタンやセラミツク等で成形した入子を
装着するかまたは内面が酸化チタンやセラミツク
等の断熱材でコーテイングされ、後述する押湯加
圧プランジヤー２２、バネ２３、バネ受け２４か
らなる押湯加圧装着３４が設けられている。前記
押湯加圧プランジヤー２２は前述した押湯溶湯室
２１に自由に出入出来る寸法で両金型１，２の合
せ面に嵌合装着してある。前記バネ２３は押湯加
圧プランジヤー２２を押湯溶湯室２１の方向に押
しつけている。 Reference numeral 21 denotes a feeder molten chamber for functioning as a feeder, which is equipped with a molded insert made of titanium oxide, ceramic, etc., or whose inner surface is coated with a heat insulating material such as titanium oxide, ceramic, etc., and is used to pressurize the feeder as described later. A riser pressure mounting 34 consisting of a plunger 22, a spring 23, and a spring receiver 24 is provided. The feeder pressurizing plunger 22 has a size that allows it to freely move in and out of the feeder molten chamber 21, and is fitted onto the mating surfaces of the molds 1 and 2. The spring 23 presses the feeder pressurizing plunger 22 in the direction of the feeder molten chamber 21 .
したがつて押湯加圧プランジヤー２２は押湯溶
湯室２１が空のときに先端が押湯溶湯室２１の中
に入り込んでいる。なお押湯加圧プランジヤー２
２は両金型１，２が型開のときには図示してない
カム機構によつて引戻される様にしてある。 Therefore, the tip of the feeder pressurizing plunger 22 enters into the feeder melt chamber 21 when the feeder melt chamber 21 is empty. In addition, riser pressure plunger 2
2 is adapted to be pulled back by a cam mechanism (not shown) when both molds 1 and 2 are opened.
次に本発明は引け巣を効果的に防止出来ること
を第４図により説明する。第４図は溶湯充填が完
了した状態に於けるキヤビテイ付近の断面図で、
図中、射出室１５の大口径部１６より湯道１７、
ゲート２０、押湯溶湯室２１の各内壁は第３図で
も説明したように酸化チタンやセラミツク等の断
熱材でコーテイングされている。したがつて此れ
らの各部は溶湯を充填してから凝固するまでの時
間が長くなり、キヤビテイ３内の溶湯が凝固完了
するまで流動状態を保つ様にしてある。また、押
湯加圧プランジヤー２２は溶湯充填時には溶湯２
６の圧力で押戻されてバネ２３を圧縮して運動エ
ネルギーを畜積するので再び前進しようとする。 Next, it will be explained with reference to FIG. 4 that the present invention can effectively prevent shrinkage cavities. Figure 4 is a cross-sectional view of the vicinity of the cavity in a state where molten metal filling is completed.
In the figure, from the large diameter part 16 of the injection chamber 15, the runner 17,
The inner walls of the gate 20 and feeder molten metal chamber 21 are coated with a heat insulating material such as titanium oxide or ceramic, as explained in FIG. Therefore, it takes a long time for each of these parts to solidify after being filled with the molten metal, and the molten metal in the cavity 3 is kept in a fluid state until it is completely solidified. In addition, the feeder pressurizing plunger 22 is used to hold the molten metal 2 when filling the molten metal.
It is pushed back by the pressure of 6, compresses the spring 23, accumulates kinetic energy, and tries to move forward again.
さて、キヤビテイ３、射出室１５、湯道１７、
ゲート２０、押湯溶湯室２１の各部に充填された
溶湯２６は時間の経過と共に冷却凝固するが此の
凝固は図中綾線で示した部分から始まり、時間経
過と共に綾線で囲まれた内部に及ぶ。したがつて
もし此らの内部が凝固する過程で溶湯の補充が行
われなければ引け巣が出来るわけであるが、本発
明ではキヤビテイ３内の溶湯２６が完全に凝固を
完了するまで射出室１５内の溶湯２６は流動性を
保ち射出プランジヤー１１に加圧されてキヤビテ
イ３に補充され、またゲート２０から遠い部分に
は押湯溶湯室２１内の溶湯が押湯加圧プランジヤ
ー２２によつて加圧され、キヤビテイ３内に補充
されるようになつている。したがつて最終的に製
品となるキヤビテイ３内の溶湯は引け巣を発生す
ることなく凝固を完了し健全な鋳物となる。なお
射出室１５、湯道１７、ゲート２０、押湯溶湯室
２１の各部内の溶湯もキヤビテイ部の凝固が完了
後数秒間で凝固するように酸化チタンやセラミツ
ク等の断熱材によりコーテイングの厚さまたは材
質によつて調節してある。 Now, cavity 3, injection chamber 15, runner 17,
The molten metal 26 filled in each part of the gate 20 and riser molten metal chamber 21 cools and solidifies over time, but this solidification starts from the part indicated by the twill line in the figure, and as time passes, the inside surrounded by the twill line It extends to. Therefore, if the molten metal is not replenished during the solidification process inside these areas, a shrinkage cavity will be formed, but in the present invention, the injection chamber 15 is kept in the injection chamber 15 until the molten metal 26 in the cavity 3 is completely solidified. The molten metal 26 inside maintains its fluidity and is pressurized by the injection plunger 11 to be replenished into the cavity 3, and the molten metal in the feeder molten chamber 21 is pressurized by the feeder pressure plunger 22 in the part far from the gate 20. and is replenished into cavity 3. Therefore, the molten metal in the cavity 3, which will eventually become a product, completes solidification without generating shrinkage cavities, resulting in a sound casting. The molten metal in each part of the injection chamber 15, runner 17, gate 20, and riser molten metal chamber 21 is coated with a thickness of heat insulating material such as titanium oxide or ceramic so that it will solidify within a few seconds after solidification in the cavity is completed. Or it is adjusted depending on the material.
第５図は押湯溶湯室２１の他の実施例で、図中
第５図イは油圧又は空圧シリンダ２７で押湯加圧
プランジヤー２２に力を与え溶湯２６を加圧する
ようにしたものである。第５図ロはキヤビテイ３
内に溶湯が充填される際に押湯溶湯室２１にガス
を押し込め、さらに此のガスを溶湯２６で圧縮し
一種のガスアキユームレータの状態にしておき、
冷却段階ではガスの圧力によつて押湯溶湯室２１
内の溶湯２６をキヤビテイ３に補充する様にして
ある。図中２８で示したのはパツキンで、押湯溶
湯室２１内のガスが逃げないようにしたものであ
る。 FIG. 5 shows another embodiment of the feeder molten metal chamber 21, and in FIG. . Figure 5 B is cavity 3
When the molten metal is filled into the feeder, gas is forced into the riser molten metal chamber 21, and this gas is further compressed by the molten metal 26 to form a kind of gas accumulator.
In the cooling stage, the feeder melt chamber 21 is heated by the pressure of the gas.
The cavity 3 is replenished with the molten metal 26 inside. The numeral 28 in the figure is a gasket that prevents the gas in the feeder molten chamber 21 from escaping.
第６図は本発明の他の実施例を示す平面図で、
図中第３図ないし第５図と同一作用のものは同一
符号で示して説明を省略する。図中２９は押湯加
圧プランジヤー２２によつて加圧される押湯溶湯
室３０は溶湯充填時のガス圧によつて加圧される
押湯溶湯室を設けたものである。３１は注湯時に
両金型１，２（第３図参照）内のガスを排出する
ためのエアーベントで、押湯溶湯室２９，３０以
外の部分には出来るだけ多く設けて金型内のガス
を排出することが望ましいが、本実施例ではキヤ
ビテイ３の上方および押湯溶湯室２９に設けてあ
る。 FIG. 6 is a plan view showing another embodiment of the present invention,
Components in the drawings that have the same functions as those in FIGS. 3 to 5 are designated by the same reference numerals, and explanations thereof will be omitted. In the drawing, reference numeral 29 denotes a feeder molten metal chamber 30 which is pressurized by a feeder pressurizing plunger 22 and is provided with a feeder molten metal chamber which is pressurized by gas pressure when filling the molten metal. Reference numeral 31 designates air vents for discharging the gas in both molds 1 and 2 (see Figure 3) during pouring. Although it is desirable to discharge the gas, in this embodiment it is provided above the cavity 3 and in the feeder molten chamber 29.
しかるに一般のダイカスト製品で外周部に比べ
て中央付近の肉厚が多い場合には製品の中央付近
に引け巣が出来やすいものがある。此のような製
品の金型ではキヤビテイの引け巣の出来やすい部
分（肉厚の多い部分）に冷却水を多量に通すこと
によつてある程度引け巣を防止出来るが、本発明
ではゲート又は押湯溶湯室とキヤビテイの引け巣
の出来やすい部分例えば第６図で符号３３で示す
ように製品中央部付近で肉厚の多い部分に至る間
までのキヤビテイ壁面を第６図のように帯状３２
に前述した断熱材でコーテイングしておくことに
より、ゲートまたは押湯溶湯室を製品中央付近の
肉厚の多い部分に至る間までの溶湯の凝固は遅く
なつてゲートまたは押湯溶湯室の作用で押される
ので、引け巣を完全に防止出来る。 However, in some general die-cast products, if the wall thickness near the center is greater than that at the outer periphery, shrinkage cavities are likely to form near the center of the product. In molds for products like this, shrinkage cavities can be prevented to some extent by passing a large amount of cooling water through the parts of the cavity where shrinkage cavities are likely to occur (thick parts); The cavity wall surface between the molten metal chamber and the part where shrinkage cavities are likely to form, for example, the thick part near the center of the product as shown by numeral 33 in FIG.
By coating with the above-mentioned insulating material, the solidification of the molten metal between the gate or feeder molten chamber and the thick part near the center of the product is slowed down, and the solidification of the molten metal is slowed down by the action of the gate or riser molten chamber. Since it is pressed, shrinkage cavities can be completely prevented.
以上述べたように本発明によれば従来のダイカ
スト法の長所を損うことなく引け巣を除去出来る
のでダイカスト製品の品質を向上させることが出
来る。 As described above, according to the present invention, shrinkage cavities can be removed without impairing the advantages of conventional die-casting methods, thereby improving the quality of die-cast products.
第１図は従来のダイカスト装置の金型および射
出部の断面図、第２図は従来のダイカスト装置に
おける金型の要部断面図、第３図は本発明の一実
施例を示すダイカスト装置の概略図、第４図は実
施例における溶湯充満が完了した状態におけるキ
ヤビテイ付近の断面図、第５図は第３図の押湯溶
湯室２１の他の実施例を示す要部断面図、第６図
は本発明の他の実施例を示す移動金型の要部平面
図である。
１……固定金型、２……移動金型、３……キヤ
ビテイ、４，１５……射出室、５，１７……湯
道、６，２０……ゲート、７……オーバーフロ
ー、８……ガス抜き、９……射出スリーブ、１０
……溶湯注入口、１１……射出プランジヤー、１
２……ノズル、１４，２６……溶湯、１６……大
口径部、２１，２９，３０……押湯溶湯室、２２
……押湯加圧プランジヤー、２３……バネ、２４
……バネ受け、２７……空圧シリンダ、２８……
パツキン、３１……エアーベント、３２……帯、
３４……押湯加圧装置。
FIG. 1 is a cross-sectional view of a mold and injection part of a conventional die-casting device, FIG. 2 is a cross-sectional view of the main part of a mold in a conventional die-casting device, and FIG. 3 is a cross-sectional view of a die-casting device showing an embodiment of the present invention. Schematic diagram, FIG. 4 is a cross-sectional view of the vicinity of the cavity in a state where molten metal filling is completed in the embodiment, FIG. The figure is a plan view of essential parts of a movable mold showing another embodiment of the present invention. 1... fixed mold, 2... movable mold, 3... cavity, 4, 15... injection chamber, 5, 17... runner, 6, 20... gate, 7... overflow, 8... Gas venting, 9...Injection sleeve, 10
... Molten metal inlet, 11 ... Injection plunger, 1
2... Nozzle, 14, 26... Molten metal, 16... Large diameter part, 21, 29, 30... Risser molten metal chamber, 22
...Riser pressure plunger, 23...Spring, 24
...Spring receiver, 27...Pneumatic cylinder, 28...
Patsukin, 31...Air vent, 32...Obi,
34...Riser pressure device.
Claims (1)
と、射出室の金型分割面側に射出スリーブ内径よ
りも大きい内径凹部で構成され、その内壁が断熱
材でコーテイングされた大口径部と、同大口径
部、前記キヤビテイとを連通しかつ溶湯の接触面
が断熱材でコーテイングされた湯道と、前記射出
室から遠い部分の前記キヤビテイに連通して設け
られ断熱材で成形または断熱材でその内面がコー
テイングされ前記キヤビテイに押湯の働きを作用
する押湯溶湯室と、前記キヤビテイ内の溶湯が冷
却収縮する際に前記押湯溶湯室内の溶湯に圧力を
加えて前記キヤビテイ内に溶湯を補充する押湯加
圧装置とからなるダイカスト装置。 ２ キヤビテイはゲート又は押湯溶湯室と引け巣
の出来やすい部分との間の壁面が帯状に断熱材で
コーテイングされたことを特徴とする特許請求の
範囲第１項記載のダイカスト装置。[Scope of Claims] 1. A cavity consisting of both fixed and movable molds, and a recess with an inner diameter larger than the inner diameter of the injection sleeve on the side of the mold dividing surface of the injection chamber, the inner wall of which is coated with a heat insulating material. A runner which communicates the diameter part, the same large diameter part, and the cavity and whose molten metal contact surface is coated with a heat insulating material, and a runner provided in communication with the cavity in a part far from the injection chamber and molded with a heat insulating material. or a feeder molten chamber whose inner surface is coated with a heat insulating material and which acts as a riser on the cavity; A die-casting device consisting of a feeder pressure device that replenishes molten metal. 2. The die-casting apparatus according to claim 1, wherein the wall surface of the cavity between the gate or feeder molten metal chamber and a portion where shrinkage cavities are likely to be formed is coated with a heat insulating material in a band shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14436181A JPS57127569A (en) | 1981-09-12 | 1981-09-12 | Method and device for die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14436181A JPS57127569A (en) | 1981-09-12 | 1981-09-12 | Method and device for die casting |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3582076A Division JPS52119419A (en) | 1976-03-31 | 1976-03-31 | Method and device of die casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57127569A JPS57127569A (en) | 1982-08-07 |
| JPS6129821B2 true JPS6129821B2 (en) | 1986-07-09 |
Family
ID=15360309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14436181A Granted JPS57127569A (en) | 1981-09-12 | 1981-09-12 | Method and device for die casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57127569A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6478662A (en) * | 1987-09-21 | 1989-03-24 | Ube Industries | Injection molding machine |
| JP3107707B2 (en) * | 1994-06-29 | 2000-11-13 | トヨタ自動車株式会社 | Control method of pressure pin |
| JP3370278B2 (en) * | 1998-07-03 | 2003-01-27 | マツダ株式会社 | Method and apparatus for semi-solid injection molding of metal |
| CN108788063A (en) * | 2018-07-06 | 2018-11-13 | 安徽思源三轻智能制造有限公司 | A kind of vertical-plunger cold chamber die-casting machine of rapid cooling |
| JP7215409B2 (en) * | 2019-12-19 | 2023-01-31 | トヨタ自動車株式会社 | casting method |
-
1981
- 1981-09-12 JP JP14436181A patent/JPS57127569A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57127569A (en) | 1982-08-07 |
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