JP2015167994A - Die-casting mold insert and die-casting method - Google Patents

Die-casting mold insert and die-casting method Download PDF

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JP2015167994A
JP2015167994A JP2014046478A JP2014046478A JP2015167994A JP 2015167994 A JP2015167994 A JP 2015167994A JP 2014046478 A JP2014046478 A JP 2014046478A JP 2014046478 A JP2014046478 A JP 2014046478A JP 2015167994 A JP2015167994 A JP 2015167994A
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casting mold
outer member
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JP6271303B2 (en
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剛士 大本
Takeshi Omoto
剛士 大本
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Ryobi Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a die-casting mold insert which can partially reduce a cooling efficiency and a die-casting method using this die-casting mold insert.SOLUTION: A die-casting mold insert 1 is installed in a die-casting mold having a stationary die and a movable die that can advance and retreat with respect to the stationary die. The die-casting mold insert 1 is manufactured under diffusion junction by integrating an outer member 10 made of copper with an inner member 20 made of copper or copper alloy inserted into a hole 10A of the outer member 10. An intermediate member 30 made of stainless steel having a lower coefficient of thermal conductivity than the outer member is installed over a predetermined range between the outer member and the inner member, so that a cooling efficiency is reduced over a predetermined range where the intermediate member 30 is installed.

Description

本発明は、ダイカスト金型用入子と、このダイカスト金型用入子を使用したダイカスト法に関するものである。   The present invention relates to a die casting die insert and a die casting method using the die casting die insert.

ダイカスト用金型に用いられる入子として、第１の金属（鋼）と、第２の金属（銅または銅合金）とを拡散接合により一体化して製造するものが知られている（例えば、下記特許文献１参照）。   As a nesting used for a die casting die, one produced by integrating a first metal (steel) and a second metal (copper or copper alloy) by diffusion bonding (for example, the following) Patent Document 1).

特許文献１によれば、このようにして製造された入子は、第２の金属に形成された冷却水路によって高い耐腐食性を有しつつ、第１の金属との稠密な拡散接合部位によって良好な熱伝導特性を発揮し、長期にわたって高い冷却効果を奏することができる、とされている。   According to Patent Document 1, the nest manufactured in this way has high corrosion resistance due to the cooling water channel formed in the second metal, and has a dense diffusion bonding site with the first metal. It is said that it exhibits good heat conduction characteristics and can exhibit a high cooling effect over a long period of time.

特許第５１１３５４９号公報Japanese Patent No. 5113549

しかしながら、特許文献１に開示される入子構造においては、部分的に冷却効率を低減させることが必要な場合には対応することができないという問題を有している。本発明は、この課題を解決するために成されたものであり、その目的は部分的に冷却効率を低減させることができるダイカスト金型用入子と、このダイカスト金型用入子を用いたダイカスト法を提供することにある。   However, the nested structure disclosed in Patent Document 1 has a problem that it cannot cope with a case where it is necessary to partially reduce the cooling efficiency. The present invention has been made to solve this problem, and the purpose thereof is to use a die-cast mold insert that can partially reduce the cooling efficiency, and the die-cast mold insert. It is to provide a die casting method.

以下、本発明について説明する。なお、本発明の理解を容易にするために添付図面の参照番号を括弧書きにて付記するが、それにより本発明が図示の形態に限定されるものではない。   The present invention will be described below. In addition, in order to make an understanding of this invention easy, the reference number of an accompanying drawing is attached in parenthesis writing, However, This invention is not limited to the form of illustration by it.

本発明は、固定型と、該固定型に対して進退可能な可動型とを有するダイカスト用金型に設置され、鋼からなる外側部材（１０）と該外側部材（１０）の穴部（１０Ａ）に挿入される銅又は銅合金からなる内側部材（２０）とを拡散接合で一体化することにより製造されるダイカスト金型用入子（１）において、該外側部材（１０）と該内側部材（２０）との間の所定範囲には該外側部材（１０）よりも熱伝導率が低い金属材質からなる中間部材（３０）が設置されていることを特徴とする。   The present invention is installed in a die-casting mold having a fixed mold and a movable mold capable of moving forward and backward with respect to the fixed mold, and comprises an outer member (10) made of steel and a hole (10A) of the outer member (10). In the die-casting mold insert (1) manufactured by integrating the inner member (20) made of copper or copper alloy inserted into the die) by diffusion bonding, the outer member (10) and the inner member An intermediate member (30) made of a metal material having a lower thermal conductivity than the outer member (10) is installed in a predetermined range between (20) and (20).

ここで、 該中間部材（３０）は、該外側部材（１０）と該内側部材（２０）と拡散接合で一体化されていることが好ましい。   The intermediate member (30) is preferably integrated with the outer member (10) and the inner member (20) by diffusion bonding.

また、該内側部材（２０）は、大径部（２１）と小径部（２２）とを備え、該中間部材（３０）はスリーブ形状であり、該内側部材（２０）の小径部（２２）が該中間部材（３０）の孔部（３１）に嵌入されていることが好ましい。   The inner member (20) includes a large diameter portion (21) and a small diameter portion (22), the intermediate member (30) has a sleeve shape, and the small diameter portion (22) of the inner member (20). Is preferably fitted in the hole (31) of the intermediate member (30).

なお、本発明に係るダイカスト法は、上述したダイカスト金型用入子（１）を用いてダイカストを行うことを特徴とするものである。   The die casting method according to the present invention is characterized in that die casting is performed using the above-described die casting die insert (1).

本発明によれば、部分的に冷却効率を低減することができるダイカト金型用入子と、このダイカスト金型用入子を用いるダイカスト法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the die-casting method using the insert for die-casting molds which can reduce cooling efficiency partially, and this insert for die-casting molds can be provided.

本実施形態に係るダイカスト金型用入子の断面図である。It is sectional drawing of the insert for die-casting molds concerning this embodiment. 図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG.

以下、本発明を実施するための好適な実施形態について、図面を用いて説明する。なお、以下の実施形態は、各請求項に係る発明を限定するものではなく、また、実施形態の中で説明されている特徴の組み合わせの全てが発明の解決手段に必須であるとは限らない。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. .

本実施形態に係るダイカスト金型用入子１及びこのダイカスト金型用入子を用いるダイカスト法について図面に基づいて説明する。図１は、本実施形態のダイカスト金型用入子１の断面図であり、図２は図１のＡ−Ａ線断面図である。   A die casting mold insert 1 according to the present embodiment and a die casting method using the die cast mold insert will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a die casting mold insert 1 according to the present embodiment, and FIG. 2 is a cross-sectional view taken along line AA of FIG.

一般にダイカスト金型は、固定型と、固定型に対して進退可能な可動型を備えており、固定型は固定ダイスと固定ホルダとにより構成され、可動型は可動ダイスと可動ホルダとにより構成されている。本実施形態に係るダイカスト金型用入子１は、固定ダイス又は可動ダイスに形成された凹部に嵌合されキャビティを画成するものである。ダイカスト金型用入子１は、鋼からなる外側部材１０と、銅又は銅合金からなる内側部材２０と、外側部材１０よりも熱伝導率の低い金属材質からなる中間部材３０とを拡散接合で一体化することにより製造されている。特に、本実施形態では、前記鋼についてはＳＫＤ６１が採用され、前記銅又は銅合金については無酸素銅が採用されている。無酸素銅は、銅又は銅合金のなかでも純度の高いものであり、熱伝導率が非常に高いという性質を有している。そして、前記熱伝導率の低い金属材料についてはステンレス鋼が採用されている。   In general, a die casting mold includes a fixed mold and a movable mold that can move forward and backward with respect to the fixed mold. The fixed mold includes a fixed die and a fixed holder, and the movable mold includes a movable die and a movable holder. ing. The die-casting mold insert 1 according to this embodiment is fitted into a recess formed in a fixed die or a movable die to define a cavity. The die casting mold insert 1 is formed by diffusion bonding an outer member 10 made of steel, an inner member 20 made of copper or a copper alloy, and an intermediate member 30 made of a metal material having a lower thermal conductivity than the outer member 10. It is manufactured by integrating. In particular, in the present embodiment, SKD61 is adopted for the steel, and oxygen-free copper is adopted for the copper or copper alloy. Oxygen-free copper is a highly pure copper or copper alloy, and has a property of extremely high thermal conductivity. And the stainless steel is employ | adopted about the said metal material with low heat conductivity.

外側部材１０は、固定ダイス又は可動ダイスに形成された凹部に嵌合される基部１１と、この基部１１の前面１１Ａから突出する突出部１２とを備えている。外側部材１０は、基部１１の裏面１１Ｂに開口する穴部１０Ａを有しており、この穴部１０Ａ内に後述する内側部材２０と中間部材３０とが収容されるようになっている。突出部１２は円柱形状であり、先端面１２Ａと外周面１２Ｂとを有している。基部１１の前面１１Ａと、突出部１２の先端面１２Ａ及び外周面１２Ｂはキャビティ面とされ、ダイカスト金型の内部にキャビティを画成する。   The outer member 10 includes a base portion 11 that is fitted in a recess formed in a fixed die or a movable die, and a protruding portion 12 that protrudes from the front surface 11A of the base portion 11. The outer member 10 has a hole 10A that opens to the back surface 11B of the base 11, and an inner member 20 and an intermediate member 30 described later are accommodated in the hole 10A. The protrusion 12 has a cylindrical shape, and has a front end surface 12A and an outer peripheral surface 12B. The front surface 11A of the base 11 and the front end surface 12A and the outer peripheral surface 12B of the projecting portion 12 serve as cavity surfaces, and define a cavity inside the die casting mold.

内側部材２０は、外側部材１０の穴部１０Ａ内に収容された際に外側部材１０の突出部１２の先端側に位置する大径部２１と、外側部材１０の突出部１２の基端側に位置する小径部２２とを有している。小径部２２の端面２２Ａには冷却穴部２３が形成されており、ダイカスト金型の内部に設けられる冷媒通路によって循環供給される水等の冷却媒体を接触させることができるようになっている。   When the inner member 20 is accommodated in the hole 10 </ b> A of the outer member 10, the large-diameter portion 21 positioned on the distal end side of the protruding portion 12 of the outer member 10 and the proximal end side of the protruding portion 12 of the outer member 10. And a small-diameter portion 22 that is positioned. A cooling hole 23 is formed in the end surface 22A of the small-diameter portion 22 so that a cooling medium such as water that is circulated and supplied by a refrigerant passage provided in the die casting mold can be brought into contact therewith.

中間部材３０はスリーブ形状であり、中間部材３０の孔部３１には内側部材２０の小径部２２が嵌入されている。中間部材３０の外径は内側部材２０の大径部２１の外径と略同一であり、中間部材３０の孔部３１の孔径は内側部材２０の小径部２２の外径と略同一である。   The intermediate member 30 has a sleeve shape, and the small diameter portion 22 of the inner member 20 is fitted into the hole 31 of the intermediate member 30. The outer diameter of the intermediate member 30 is substantially the same as the outer diameter of the large diameter portion 21 of the inner member 20, and the hole diameter of the hole portion 31 of the intermediate member 30 is substantially the same as the outer diameter of the small diameter portion 22 of the inner member 20.

外側部材１０の穴部１０Ａ内に埋め込まれた内側部材２０と中間部材３０とは拡散接合等の公知の異材接合技術を採用することで、隙間無く分離不能に接合されている。   The inner member 20 and the intermediate member 30 embedded in the hole 10 </ b> A of the outer member 10 are joined to each other in a non-separable manner using a known different material joining technique such as diffusion joining.

上述したとおり、内側部材２０には冷却穴部２３が形成されており、冷却媒体が接触することで内側部材２０から熱を奪うことができる。ダイカスト法が行われると外側部材１０は溶湯からの熱に曝されて高温となるが、外側部材１０の熱は熱伝導率が高い無酸素銅からなる内側部材２０を経由して冷却媒体により除去される。外側部材１０の突出部１２の先端側においては、外側部材１０と内側部材２０との間に中間部材２０が存在していないので積極的な冷却効果が発揮されることになる。一方、外側部材１０の突出部１２の基端側の所定範囲には、外側部材１０と内側部材２０との間に熱伝導率が低い中間部材３０が配置されているので、中間部材３０が配置されている範囲については冷却効果が低減されることになる。   As described above, the cooling hole 23 is formed in the inner member 20, and heat can be taken from the inner member 20 by contact with the cooling medium. When the die casting method is performed, the outer member 10 is exposed to heat from the molten metal and becomes high temperature, but the heat of the outer member 10 is removed by the cooling medium via the inner member 20 made of oxygen-free copper having high thermal conductivity. Is done. Since the intermediate member 20 does not exist between the outer member 10 and the inner member 20 at the distal end side of the protruding portion 12 of the outer member 10, a positive cooling effect is exhibited. On the other hand, since the intermediate member 30 having a low thermal conductivity is disposed between the outer member 10 and the inner member 20 in the predetermined range on the proximal end side of the protruding portion 12 of the outer member 10, the intermediate member 30 is disposed. The cooling effect will be reduced for the range that is provided.

次に、本実施形態のダイカスト金型用入子１を用いたダイカスト法について説明する。ダイカスト法は、固定型又は可動型の少なくとも一方に本実施形態のダイカスト金型用入子１が設置さたダイカスト金型を用いて行われる。ダイカスト法では、先ず、可動型を固定型に合わせてキャビティを画成する。次に、固定型に設けられるスリーブ内にアルミニウム合金等の溶湯を供給し、プランジャチップにより溶湯をキャビティに充填する。そして、キャビティの溶湯がダイカスト金型用入子１により冷却されて凝固した後に型開きを行い、ダイカスト品をダイカスト金型から取り出す。以上がダイカスト法である。   Next, the die casting method using the insert 1 for die casting molds of this embodiment is demonstrated. The die casting method is performed using a die casting die in which the die casting die insert 1 of the present embodiment is installed in at least one of a fixed die and a movable die. In the die casting method, first, a cavity is defined by matching a movable mold with a fixed mold. Next, a molten metal such as an aluminum alloy is supplied into a sleeve provided in the fixed mold, and the cavity is filled with the molten metal with a plunger tip. Then, after the molten metal in the cavity is cooled and solidified by the die casting insert 1, the mold is opened, and the die cast product is taken out of the die casting mold. The above is the die casting method.

以上、本発明の好適な実施形態について説明した。すなわち、本実施形態に係るダイカスト金型用入子１は、外側部材１０と内側部材２０との間の所定範囲に外側部材１０よりも熱伝導率が低い金属材料からなる中間部材３０を設置して拡散接合で一体化したものである。このような構成を有することで、中間部材３０が設置されている範囲については冷却効果を低減することができるようになるので、多様なダイカスト品の製造に対応することができる。   The preferred embodiments of the present invention have been described above. That is, in the die-casting mold insert 1 according to the present embodiment, the intermediate member 30 made of a metal material having a lower thermal conductivity than the outer member 10 is installed in a predetermined range between the outer member 10 and the inner member 20. Integrated by diffusion bonding. By having such a configuration, the cooling effect can be reduced in the range where the intermediate member 30 is installed, so that it is possible to cope with the manufacture of various die-cast products.

ただし、本発明の技術的範囲は上記実施形態に記載の範囲には限定されない。上記実施形態には、多様な変更又は改良を加えることが可能である。   However, the technical scope of the present invention is not limited to the scope described in the above embodiment. Various modifications or improvements can be added to the embodiment.

例えば、上述した実施形態では、ダイカスト金型用入子１は固定ダイス又は可動ダイスに設置されるものであったが、固定ダイス又は可動ダイスそのものとして固定ホルダ又は可動ホルダに設置されてもよい。また、ダイカスト用金型用入子１はダイカスト品の孔部を形成するために固定ダイス又は可動ダイスに設置される鋳抜きピンであってもよい。   For example, in the embodiment described above, the die casting mold insert 1 is installed on a fixed die or a movable die, but may be installed on the fixed holder or the movable holder as the fixed die or the movable die itself. Further, the die casting die insert 1 may be a cast pin installed on a fixed die or a movable die in order to form a hole of a die cast product.

また、上述した実施形態では、中間部材をステンレス鋼としたが、外側部材よりも熱伝導率が低い金属材料であればよく、例えば、ＳＫＤ１１等を採用しもよい。   In the above-described embodiment, the intermediate member is made of stainless steel. However, any metal material having lower thermal conductivity than the outer member may be used, and for example, SKD11 or the like may be adopted.

１ ダイカスト金型用入子
１０ 外側部材
１０Ａ 穴部
１１ 基部
１１Ａ 表面
１１Ｂ 裏面
１２ 突出部
１２Ａ 先端面
１２Ｂ 外周面
２０ 内側部材
２１ 大径部
２２ 小径部
２３ 冷却穴部
３０ 中間部材
３１ 孔部 DESCRIPTION OF SYMBOLS 1 Insert for die-casting mold 10 Outer member 10A Hole 11 Base 11A Surface 11B Back surface 12 Protrusion 12A Tip surface 12B Outer surface 20 Inner member 21 Large diameter portion 22 Small diameter portion 23 Cooling hole portion 30 Intermediate member 31 Hole portion

Claims (4)

固定型と、該固定型に対して進退可能な可動型とを有するダイカスト用金型に設置され、鋼からなる外側部材と該外側部材の穴部に挿入される銅又は銅合金からなる内側部材とを拡散接合で一体化することにより製造されるダイカスト金型用入子において、
該外側部材と該内側部材との間の所定範囲には該外側部材よりも熱伝導率が低い金属材料からなる中間部材が設置されていることを特徴とするダイカスト金型用入子。 An outer member made of steel and an inner member made of copper or a copper alloy inserted in a hole of the outer member, which is installed in a die casting mold having a fixed die and a movable die movable forward and backward with respect to the fixed die In a die-cast mold insert manufactured by integrating
An insert for a die-casting mold, wherein an intermediate member made of a metal material having a lower thermal conductivity than that of the outer member is installed in a predetermined range between the outer member and the inner member. 該中間部材は、該外側部材と該内側部材と拡散接合で一体化されていることを特徴とする請求項１に記載のダイカスト金型用入子。   The insert for a die-casting mold according to claim 1, wherein the intermediate member is integrated with the outer member and the inner member by diffusion bonding. 該内側部材は、大径部と小径部とを備え、
該中間部材はスリーブ形状であり、
該内側部材の小径部が該中間部材の孔部に嵌入されていることを特徴とする請求項１又は請求項２に記載のダイカスト金型用入子。 The inner member includes a large diameter portion and a small diameter portion,
The intermediate member has a sleeve shape,
The die casting mold insert according to claim 1 or 2, wherein a small-diameter portion of the inner member is fitted into a hole of the intermediate member. 請求項１〜請求項３のいずれかに記載のダイカスト金型用入子を用いてダイカストすることを特徴とするダイカスト法。   The die-casting method characterized by die-casting using the insert for die-casting molds in any one of Claims 1-3.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114505462A (en) * 2022-02-17 2022-05-17 盘星新型合金材料(常州)有限公司 Deep hole die casting forming method without drawing die and forming device

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