JP3127031U - Chill vent - Google Patents

Chill vent Download PDF

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Publication number
JP3127031U
JP3127031U JP2006007236U JP2006007236U JP3127031U JP 3127031 U JP3127031 U JP 3127031U JP 2006007236 U JP2006007236 U JP 2006007236U JP 2006007236 U JP2006007236 U JP 2006007236U JP 3127031 U JP3127031 U JP 3127031U
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chill
passage
bent portion
mountain
molten metal
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玉順 成
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Japan Mold Trade
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Japan Mold Trade
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Priority to KR1020070073817A priority patent/KR20080022493A/en
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/14—Machines with evacuated die cavity
    • B22D17/145—Venting means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/34—Moulds having venting means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract


【課題】本考案はチルブロックの全体の長さを短くさせてコンパクトにでき、設置しても金型ベースから突出せず、且つ強制的に冷却して金型外部へ流出する前に確実に凝固させて溶湯の流出防止が可能になるチルベントを提供することを目的とする。
【解決手段】チルベントのガス抜き通路３の断面形状を山形状にし、その中間部に折曲部3aを設けた構造とする。また前記山形状の折曲部3aの下部を円弧状に形成すると良く、前記山形状の中間部に折曲部3aを２段階に設け、前記チルブロック１，２に冷却水用の通路を穿設させると良い。
【選択図】図１
The present invention reduces the overall length of the chill block to make it compact, and does not protrude from the mold base even when installed, and reliably before it cools down and flows out of the mold. An object of the present invention is to provide a chill vent that can be solidified to prevent molten metal from flowing out.
A cross-sectional shape of a gas vent passage 3 of a chill vent is formed in a mountain shape, and a bent portion 3a is provided at an intermediate portion thereof. The lower portion of the mountain-shaped bent portion 3a may be formed in an arc shape, the bent portion 3a is provided in two steps in the intermediate portion of the mountain shape, and a passage for cooling water is formed in the chill blocks 1 and 2. It is good to install.
[Selection] Figure 1

Description

本考案はダイキャストの金型内部のガス抜きを行い、その鋳造品に巣がなく、且つ金型外部へ溶湯を流出させないためのチルベントに関する。   The present invention relates to a chill vent for venting the inside of a die-casting mold so that the casting has no nest and the molten metal does not flow out of the mold.

一般にチルベントはダイキャスト鋳造に於いて、金型内部に残された空気やガスによって発生する諸問題、例えば、フクレやガスホール等の欠陥の発生，部分的な充填不足，湯皺の発生，細かい彫刻文字がきれいに出ない，機械加工後の気密漏れがなくならない，機械加工時に切削面へ巣が生じる，熱処理後に変形が生じる等の欠点を解決するために使用されている。このチルベントは、金型のキャビティに連通させると共にガス抜き通路の出口側が金型の外部に連通するように接続されて設置していた。従って、成形時には、キャビティ内に金属湯を流入しながら、キャビティ内の空気やガスをチルベントが介在されて金型外部に排出すると共にキャビティ内に流入された金属湯が固化し、溶湯が金型外部へ流出する前にガス抜き通路内で急冷凝固され、このチルベントによってキャビティ内の空気やガスが抜かれて巣などがない良好な成形品が得られるのである。   In general, chill vents have various problems caused by air and gas left inside the mold in die casting, such as defects such as blisters and gas holes, partial filling shortages, generation of molten metal, and fine details. It is used to solve the disadvantages such as engraving characters not appearing cleanly, hermetic leakage after machining, loss of nest on the cutting surface during machining, and deformation after heat treatment. The chill vent is connected to the mold cavity and connected so that the outlet side of the gas vent passage communicates with the outside of the mold. Therefore, at the time of molding, while flowing the metal hot water into the cavity, the chill vent is interposed to discharge the air or gas in the cavity to the outside of the mold, and the metal hot water that has flowed into the cavity is solidified, and the molten metal becomes the mold. Before flowing out to the outside, it is rapidly cooled and solidified in the gas vent passage, and by this chill vent, air and gas in the cavity are vented, and a good molded product without a nest is obtained.

図４は市販されている従来のチルベントを示す図であり、これは固定型と可動型から成るチルブロック（１），（２）の対向面に連続する波形状のガス抜き通路（３）を設けたチルベントであり、ガス抜き通路（３）の断面形状は図３（ｄ）に示すような三角状或いは図示しない四角形状の山形状である。この時のガス抜き通路（３）の隙間が０．６ｍｍ〜０．７ｍｍのものであり、このチルベントの長さ（Ｌ）は約１３０ｍｍ前後である。   FIG. 4 is a diagram showing a conventional chill vent that is commercially available, which has a wave-shaped gas vent passage (3) that is continuous with the opposed surfaces of the chill blocks (1) and (2) that are fixed and movable. The cross-sectional shape of the chill vent provided and the gas vent passage (3) is a triangular shape as shown in FIG. The gap of the gas vent passage (3) at this time is 0.6 mm to 0.7 mm, and the length (L) of the chill vent is about 130 mm.

しかしながら、従来の前記チルベントを設置すると、チルベントの端部が金型ベースから突出され、作業時に引掛ける恐れがあると共に見た目が悪いものであった。又、気温や成形条件などによって、金型外部へ溶湯が流出される恐れがあった。この時、ガス抜き通路（３）の隙間を小さくし、山形状の角度を急峻にすれば、溶湯の排出抵抗が大きくなって流出の防止が可能となる反面、ガス排出効果が低下し、良好な鋳造品が得られなくなってしまう。また溶湯が金型外部へ流出することを防止するために、ガス抜き通路（３）の長さを長くすれば良いが、チルベントの大型化を余儀なくされ、近年の小型化志向に応えられないものとなってしまう。このため、大型化せずに高効率で内部残留ガスを排出すると共に溶湯の流出を防止するために、種々の工夫されたチルベントが提案されているが、これらは構造が複雑になり、大掛かりな付帯装置を必要とするものが多いのが現状である。   However, when the conventional chill vent is installed, the end of the chill vent protrudes from the mold base, and there is a possibility that the chill vent may be caught during work, and the appearance is poor. In addition, the molten metal may flow out of the mold depending on the temperature and molding conditions. At this time, if the gap of the gas vent passage (3) is reduced and the angle of the mountain shape is made steep, the discharge resistance of the molten metal can be increased and the outflow can be prevented, but the gas discharge effect is reduced and good. Will not be obtained. In order to prevent the molten metal from flowing out of the mold, the length of the gas vent passage (3) may be increased. However, the chill vent must be enlarged, and the recent trend toward downsizing cannot be satisfied. End up. For this reason, various devised chill vents have been proposed in order to discharge the internal residual gas with high efficiency without increasing the size and to prevent the molten metal from flowing out. However, these structures are complicated and large-scale. At present, there are many cases that require an accessory device.

尚、金型外部から溶湯が流出するのを防止するために提案されたものとして、例えば、特開平１０−２４９５０８号がある。これはチルベント内に侵入した未凝固溶湯の冷却能を高めて、従来と同様の寸法・形状で、且つ構造の複雑化や大型化を防止する目的のものであり、その構造としては、ガス抜き通路の外周に冷却パイプを設け、チルブロックの素材や組成，硬さ，熱伝導率を限定したものである。従って、本考案の如きガス抜き通路の形状を工夫するものではなく、そのような発想もない。
特開平１０−２４９５０８号公報 In addition, there exists Unexamined-Japanese-Patent No. 10-249508 as what was proposed in order to prevent a molten metal flowing out from the metal mold | die outside. The purpose of this is to improve the cooling ability of the unsolidified molten metal that has entered the chill vent, and to prevent the complication and enlargement of the structure with the same size and shape as before. A cooling pipe is provided on the outer periphery of the passage to limit the material, composition, hardness, and thermal conductivity of the chill block. Therefore, the shape of the gas vent passage as in the present invention is not devised, and there is no such idea.
Japanese Patent Laid-Open No. 10-249508

本考案はチルブロックの全体の長さを短くさせてコンパクトにでき、設置しても金型ベースから突出せず、且つ金型外部への溶湯流出防止が可能となるチルベントを提供することを目的とする。   It is an object of the present invention to provide a chill vent that can be made compact by shortening the entire length of the chill block, does not protrude from the mold base even when installed, and can prevent molten metal from flowing out of the mold. And

本考案の他の目的は、溶湯がガス抜き通路の狭い隙間を流れて行く時に、強制的に冷却して金型外部へ流出する前に確実に凝固させるチルベントを提供するにある。   Another object of the present invention is to provide a chill vent that forcibly cools and melts solidly before flowing out of the mold when the molten metal flows through a narrow gap in the gas vent passage.

本考案は上記現状に鑑み成されたものであり、つまり、チルベントのガス抜き通路の断面形状を山形状にし、その中間部に折曲部を設けた構造とする。また前記山形状の折曲部の下部を円弧状に形成すると良く、前記山形状の中間部に折曲部を２段階に設け、前記チルブロックに冷却水用の通路を穿設させると良い。   The present invention has been made in view of the above-described situation, that is, a structure in which the cross-sectional shape of the gas vent passage of the chill vent is a mountain shape and a bent portion is provided at an intermediate portion thereof. Further, the lower portion of the mountain-shaped bent portion may be formed in an arc shape, and the bent portion may be provided in two stages in the intermediate portion of the mountain shape, and a passage for cooling water may be formed in the chill block.

請求項１のようにチルベントのガス抜き通路（３）の断面形状を山形状とし、その中間部に折曲部（3a）を設けることにより、チルブロック（１），（２）の全体の長さ（Ｌ）を短くさせてコンパクトに出来るため、設置しても金型ベースから突出せず、金型全体の見栄えが良いものとなる。更にガス抜き通路（３）の折曲部（3a）によって、溶湯の流れに抵抗を生じるため、従来のガス抜き通路（３）よりも遥かに溶湯が金型外部から流出しにくくなり、溶湯の流出防止が可能となる。しかもチルブロック（１），（２）の全体の長さ（Ｌ）を従来品と同一にした場合には、ガス抜き通路（３）の隙間を大きくすることが出来るため、ガス排出効果を高めることが可能なものとなる。   The overall length of the chill blocks (1) and (2) is obtained by forming the cross-sectional shape of the gas vent passage (3) of the chill vent into a mountain shape and providing a bent portion (3a) in the middle as in claim 1. Since it can be made compact by shortening the length (L), even if it is installed, it does not protrude from the mold base, and the overall appearance of the mold is good. Furthermore, since the bent portion (3a) of the gas vent passage (3) creates resistance to the flow of the molten metal, the melt is much less likely to flow out of the mold than the conventional gas vent passage (3). Spill prevention can be achieved. In addition, when the entire length (L) of the chill blocks (1) and (2) is the same as that of the conventional product, the gap of the gas vent passage (3) can be increased, thereby enhancing the gas discharge effect. It will be possible.

請求項２のように山形状の折曲部（3a）の下部を円弧状に形成することにより、溶湯の流れが良好になってガス抜き効果を向上させると共に溶湯の固化後、ガス抜き通路（３）で固化した金属が離型し易いものとなる。   By forming the lower part of the mountain-shaped bent part (3a) in an arc shape as in claim 2, the flow of the molten metal is improved and the degassing effect is improved, and the degassing passage ( The metal solidified in 3) is easy to release.

請求項３に示すように山形状の中間部に折曲部（3a）を２段階に設けることにより、溶湯の流れに抵抗をより多く生じるため、従来のガス抜き通路（３）よりも溶湯が金型外部から一層流出しにくくなり、溶湯の流出防止が確実なものとなる。またチルブロック（１），（２）の全体の長さ（Ｌ）もより短くさせてコンパクト化が可能となる。更にチルブロック（１），（２）の全体の長さ（Ｌ）を従来品と同一にした場合には、ガス抜き通路（３）の隙間をより大きくすることが出来るため、ガス排出効果をより一層高めることが可能なものとなる。   Since the bent portion (3a) is provided in two stages in the mountain-shaped intermediate portion as shown in claim 3, the resistance to the flow of the molten metal is increased, so that the molten metal is more than the conventional gas vent passage (3). It becomes more difficult to flow out from the outside of the mold, and the prevention of molten metal outflow is ensured. In addition, the overall length (L) of the chill blocks (1) and (2) can be shortened to achieve compactness. Furthermore, when the entire length (L) of the chill blocks (1) and (2) is the same as that of the conventional product, the gap in the gas vent passage (3) can be made larger, so that the gas discharge effect is improved. This can be further increased.

請求項４に示すようにチルブロック（１），（２）に冷却水用の通路（４）を穿設させることにより、溶湯がガス抜き通路（３）の狭い隙間を流れて行く時に、強制的に冷却して金型外部へ流出する前に確実に凝固させることが可能となるため、チルブロック（１），（２）の全体の長さ（Ｌ）をより短くさせてコンパクト化でき、且つ溶湯の確実な流出防止も可能となる。またチルブロック（１），（２）の全体の長さ（Ｌ）を従来品と同一にした場合には、ガス抜き通路（３）の隙間をより大きくすることが出来るため、ガス排出効果をより高めることが可能なものとなる。   When the chill blocks (1) and (2) are provided with cooling water passages (4) as shown in claim 4, the forced flow is caused when the molten metal flows through the narrow gap of the gas vent passage (3). Since it is possible to solidify before cooling down and flowing out of the mold, the overall length (L) of the chill blocks (1) and (2) can be made shorter and more compact, In addition, the molten metal can be reliably prevented from flowing out. Further, when the entire length (L) of the chill blocks (1) and (2) is the same as that of the conventional product, the gap in the gas vent passage (3) can be made larger, so that the gas discharge effect is improved. It becomes possible to increase it further.

図１、図２は本考案の実施形態を示す図であり、これに基づき説明する。（１），（２）は互いに対向する固定型と可動型から成るチルブロックであり、チルブロック(１)は固定型であり、チルブロック(２)は可動型である。また前記チルブロック（１），（２）の全体の長さ（Ｌ）は１１５ｍｍである。これは、図４に示す市販のチルベントの全体の長さ（Ｌ）が１３０ｍｍと略同一のガス排出効果と冷却効果が得られるものである。尚、この時の長さ（Ｌ）決定は、後述するガス抜き通路（３）の排気量と市販品の排気量とが略等しくなるように計算し、且つ実施して確認して決定する。この計算式としては、一般に知られているポアゾイユの式（気体の流量を表す）を用いる。この求められる排気量はガス抜き通路（３）の長さに反比例し、ガス抜き通路（３）の隙間の３乗に比例するものである。又、前記チルブロック（１），（２）の全体の長さ（Ｌ）はガス排出効果と冷却効果によって異なり、上記１１５ｍｍに限定されるものではない。   1 and 2 are diagrams showing an embodiment of the present invention, and description will be made based on this. (1), (2) is a chill block composed of a fixed type and a movable type facing each other, the chill block (1) is a fixed type, and the chill block (2) is a movable type. The overall length (L) of the chill blocks (1) and (2) is 115 mm. This is because a gas discharge effect and a cooling effect that are substantially the same as the overall length (L) of the commercially available chill vent shown in FIG. The length (L) at this time is determined by calculating and confirming that the displacement of a gas vent passage (3), which will be described later, is substantially equal to the displacement of a commercial product. As this calculation formula, a generally known Poiseuille formula (representing the gas flow rate) is used. The required exhaust amount is inversely proportional to the length of the gas vent passage (3) and proportional to the cube of the gap of the gas vent passage (3). The total length (L) of the chill blocks (1) and (2) varies depending on the gas discharge effect and the cooling effect, and is not limited to 115 mm.

（３）はチルブロック（１），（２）の対向面に連続する波形状のガス抜き通路であり、該ガス抜き通路（３）の断面形状は山形状であり、且つ山形状の中間部には折曲部（3a）が設けられている。この折曲部（3a）を設けた山形状としては、図３（ａ）に示すような２段の山形状，図３（ｂ）のように折曲部（3a）の下部を円弧状に形成したなだらかな２段の山形状，図３（ｃ）に示すような３段の山形状などのものがある。又、前記ガス抜き通路（３）の隙間としては、０．６ｍｍ〜０．７ｍｍが好ましいが、０．８ｍｍとしても良い。（４）はチルブロック（１），（２）に穿設させた冷却水用の通路である。   (3) is a wave-shaped gas vent passage continuing to the opposing surfaces of the chill blocks (1) and (2), and the cross-sectional shape of the gas vent passage (3) is a mountain shape, and an intermediate portion of the mountain shape Is provided with a bent portion (3a). The mountain shape provided with the bent portion (3a) is a two-step mountain shape as shown in FIG. 3 (a), and the lower portion of the bent portion (3a) is formed in an arc shape as shown in FIG. 3 (b). There are a smooth two-step mountain shape formed, a three-step mountain shape as shown in FIG. The gap of the gas vent passage (3) is preferably 0.6 mm to 0.7 mm, but may be 0.8 mm. (4) is a coolant passage formed in the chill blocks (1) and (2).

次に本考案の作用について説明する。先ず始め本考案のチルベントを金型に設置する。すると、本考案の端部は金型ベースから従来の如く突出することなく設置されるのである。従って、作業時にチルベントの端部に引掛かる恐れがなくなり、見た目もスッキリしたものとなる。又、溶湯がキャビティ内に流れ込むと、キャビティが充填され、その後、ガス抜き通路（３）の隙間に溶湯が、図３（ａ）の矢印のように流れて来ると、先ず始めに左側の折曲部（3a）で溶湯の流れの方向が右に曲がり、そして左に曲がり、更に山頂部で方向転換される。次に右側の折曲部（3a）で溶湯の流れが進行方向左に曲がり、そして進行方向右に曲がり、１山分が完了する。その後、溶湯の流れは谷部で方向転換され、図示しない次の山に流れ込むと共に上記の図３（ａ）の矢印のようにして２段の山形状を通過して行くのである。   Next, the operation of the present invention will be described. First, the chill vent of the present invention is installed in a mold. Then, the end of the present invention is installed without protruding from the mold base as in the prior art. Therefore, there is no risk of being caught at the end of the chill vent during the work, and the appearance is refreshed. When the molten metal flows into the cavity, the cavity is filled, and then when the molten metal flows into the gap of the gas vent passage (3) as shown by the arrow in FIG. At the curved part (3a), the flow direction of the molten metal turns to the right, turns to the left, and further changes direction at the summit. Next, the flow of the molten metal turns to the left in the traveling direction at the bent portion (3a) on the right side, and then turns to the right in the traveling direction to complete one mountain. Thereafter, the flow of the molten metal is changed in direction at the trough, and flows into the next mountain (not shown) and passes through the two-level mountain shape as indicated by the arrow in FIG.

このように前記折曲部（3a）で溶湯の流れが曲がる毎に流れに抵抗が加わるものとなると共にガス抜き通路（３）の長さが長くなるため、チルブロック（１），（２）の全体の長さ（Ｌ）を従来品よりも約１２％前後短くすることが可能となる。またガス抜き通路（３）の隙間は、従来品と同じ長さ（Ｌ）にした場合、従来品のガス抜き通路（３）の隙間が０．６ｍｍであれば、本考案のガス抜き通路（３）の隙間を０．８ｍｍにしても従来品に比べて、溶湯が金型外部へ流出することなく、且つガス排出効果や冷却効果が得られることが確認できた。   Thus, every time the flow of the molten metal bends at the bent portion (3a), resistance is added to the flow and the length of the gas vent passage (3) is increased, so that the chill blocks (1), (2) The overall length (L) can be shortened by about 12% compared to the conventional product. Further, when the clearance of the gas vent passage (3) is the same length (L) as that of the conventional product, if the clearance of the gas vent passage (3) of the conventional product is 0.6 mm, the gas vent passage ( It was confirmed that even when the gap of 3) was 0.8 mm, the molten metal did not flow out of the mold and a gas discharging effect and a cooling effect were obtained as compared with the conventional product.

本考案はダイキャスト鋳造用だけでなく、他の金属の鋳造用として使用することも可能である。   The present invention can be used not only for die casting but also for casting other metals.

本考案の要部構造を示す断面図である。It is sectional drawing which shows the principal part structure of this invention. 本実施形態に冷却水用の通路が穿設された要部構造を示す断面図である。It is sectional drawing which shows the principal part structure by which the channel | path for cooling water was drilled in this embodiment. ガス抜き通路の複数の山形状を示す説明図である。It is explanatory drawing which shows the some mountain shape of a degassing channel | path. 従来の要部構造を示す断面図である。It is sectional drawing which shows the conventional principal part structure.

符号の説明Explanation of symbols

１，２ チルブロック
３ ガス抜き通路
3a 折曲部
４ 通路
1, 2 Chill block 3 Gas vent passage
3a Folding part 4 Passage

Claims (4)

固定型と可動型から成るチルブロック（１），（２）の対向面に連続する波形状のガス抜き通路（３）を設けたチルベントに於いて、前記ガス抜き通路（３）の断面形状が山形状であり、その中間部に折曲部（3a）を設けたことを特徴とするチルベント。   In the chill vent provided with a wave-shaped gas vent passage (3) continuous on the opposed surfaces of the chill blocks (1) and (2) composed of a fixed die and a movable die, the cross-sectional shape of the gas vent passage (3) is as follows. A chill vent that is mountain-shaped and has a bent portion (3a) in the middle. 前記山形状の折曲部（3a）の下部を円弧状に形成した請求項１記載のチルベント。   The chill vent according to claim 1, wherein a lower portion of the mountain-shaped bent portion (3a) is formed in an arc shape. 前記山形状の中間部に折曲部（3a）を２段階に設けた請求項１記載のチルベント。   The chill vent according to claim 1, wherein a bent portion (3a) is provided in two steps in the mountain-shaped intermediate portion. 前記チルブロック（１），（２）に冷却水用の通路（４）を穿設させた請求項１記載のチルベント。
The chill vent according to claim 1, wherein a passage (4) for cooling water is formed in the chill blocks (1), (2).
JP2006007236U 2006-09-06 2006-09-06 Chill vent Expired - Fee Related JP3127031U (en)

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JP2006007236U JP3127031U (en) 2006-09-06 2006-09-06 Chill vent
KR1020070073817A KR20080022493A (en) 2006-09-06 2007-07-24 Chill vent

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