JP3053042B2 - Manufacturing method of molding die having heating / cooling passage hole - Google Patents

Manufacturing method of molding die having heating / cooling passage hole

Info

Publication number
JP3053042B2
JP3053042B2 JP5113284A JP11328493A JP3053042B2 JP 3053042 B2 JP3053042 B2 JP 3053042B2 JP 5113284 A JP5113284 A JP 5113284A JP 11328493 A JP11328493 A JP 11328493A JP 3053042 B2 JP3053042 B2 JP 3053042B2
Authority
JP
Japan
Prior art keywords
mold
heating
aluminum
pipe
cavity
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 - Lifetime
Application number
JP5113284A
Other languages
Japanese (ja)
Other versions
JPH06320252A (en
Inventor
昭男 岡本
守恵 幸谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ube Corp
Original Assignee
Ube Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP5113284A priority Critical patent/JP3053042B2/en
Publication of JPH06320252A publication Critical patent/JPH06320252A/en
Application granted granted Critical
Publication of JP3053042B2 publication Critical patent/JP3053042B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、金属あるいは樹脂等の
成形用金型の製造方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a metal mold or resin mold.

【0002】[0002]

【従来の技術】図4および図5は従来金型の断面図を示
す。図4は機械加工または鋳造法で製作した金型1に、
ドリルなどの穿孔道具を用いて所望する箇所に加熱また
は冷却媒体通路用孔2を穿設していた。また、図5は熱
伝導性の良い金属管5を金型の表面近傍に鋳ぐるみ鋳造
法によって一体鋳造し、加熱または冷却媒体通路用孔3
を形成していた。
2. Description of the Related Art FIGS. 4 and 5 show sectional views of a conventional mold. FIG. 4 shows a mold 1 manufactured by machining or casting.
The hole 2 for a heating or cooling medium passage is formed at a desired place using a drilling tool such as a drill. FIG. 5 shows a case where a metal tube 5 having good thermal conductivity is integrally cast in the vicinity of the surface of a mold by insert molding to form a heating or cooling medium passage hole 3.
Had formed.

【0003】[0003]

【発明が解決しようとする課題】ところが、前述した成
形用金型を製造する場合、まず、図4に示すような金型
1に加熱または冷却媒体通路用孔2を穿設する場合に
は、 加熱または冷却媒体通路用孔2が直線的にしか加工
できないため、金型成形面の凹凸部で加熱、冷却ムラが
生じる。そのため、成形品表面性不良、変形、焼付き等
の成形不良が発生する。 加熱または冷却媒体通路用孔2を金型成形面に沿っ
て金型成形面の表面近傍に配設することができないた
め、金型成形面の加熱・冷却に時間を要し、成形サ ページ(2) イクルが長くなる。 金型成形面が複雑形状を有している場合には機械加
工は極めて困難であり、かつ、加工費が高い。
However, when manufacturing the above-described molding die, first, when a hole 2 for a heating or cooling medium passage is formed in the die 1 as shown in FIG. Since the heating or cooling medium passage hole 2 can be processed only linearly, unevenness in heating and cooling occurs at the concave and convex portions of the mold forming surface. As a result, molding defects such as poor surface properties of the molded product, deformation, and seizure occur. Since the heating or cooling medium passage hole 2 cannot be arranged near the surface of the mold molding surface along the mold molding surface, it takes time to heat and cool the mold molding surface, and the molding support ( 2) The cycle becomes longer. When the molding surface has a complicated shape, machining is extremely difficult and the machining cost is high.

【0004】次に、図5に示すように、金型1内に加熱
または冷却媒体通路用孔3を鋳ぐるみ法によって形成す
る場合には、 例えば銅パイプ等の熱伝導性の良い鋳ぐるみ用金属
パイプ5が鋳造中に注入する金属溶湯と合金化反応(溶
湯のアルミニウムと銅パイプが反応して銅パイプが溶損
する)を起こして瞬時に溶損するため、加熱または冷却
媒体通路用孔3を形成することは極めて困難である。 そのため、予め鋳ぐるみ用金属パイプ5の表面に耐
熱被覆層等を形成させる溶損防止処理工程が必要とな
り、金型製造工程が複雑になる。 さらに、溶損防止処理を施したために、鋳ぐるみ用
金属パイプ5と金型1間の微小隙間には耐熱被覆層が残
存し、その結果金型成形面の加熱・冷却に時間を要し、
成形サイクルが長くなる。 などの問題があった。
Next, as shown in FIG. 5, when a hole 3 for a heating or cooling medium passage is formed in a mold 1 by a cast-in method, for example, a heat-conductive mold such as a copper pipe is used. Since the metal pipe 5 causes an alloying reaction with the molten metal injected during casting (the aluminum and the copper pipe of the molten metal react with each other to melt the copper pipe) and instantaneously melts, the heating or cooling medium passage hole 3 is formed. It is extremely difficult to form. Therefore, a erosion prevention process for forming a heat-resistant coating layer or the like on the surface of the metal pipe 5 is necessary in advance, which complicates the mold manufacturing process. Furthermore, due to the erosion prevention treatment, the heat-resistant coating layer remains in the minute gap between the metal pipe for casting 5 and the mold 1, and as a result, it takes time to heat and cool the molding surface of the mold.
The molding cycle becomes longer. There was such a problem.

【0005】本発明は、上記従来の問題点に着目し、キ
ャビティ部へアルミニウム合金溶湯を注入して鋳ぐるみ
アルミニウムパイプ完全溶融させて成形用金型内に崩
壊性砂の粗さをもった加熱・冷却通路孔を形成させるこ
とを目的とするものである。
The present invention focuses on the above-mentioned conventional problems, and injects a molten aluminum alloy into a cavity to form a casting.
An object of the present invention is to completely melt an aluminum pipe to form a heating / cooling passage hole having a roughness of collapsible sand in a molding die.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
に、本発明に係る加熱・冷却通路孔を有する成形用金型
の製造方法は、崩壊性砂を詰めた所定形状のアルミニウ
パイプを鋳型のキャビティ内の所定位置に設置し、前
記鋳型のキャビティ部へ前記アルミニウムパイプの融点
よりも高い温度のアルミニウム合金溶湯を注入して前記
アルミニウムパイプを鋳ぐるみ、前記アルミニウム合金
溶湯と前記アルミニウムパイプを完全溶融して一体形成
させ、キャビティ部へ注入したアルミニウム合金溶湯固
化後に残存する崩壊性砂のみを崩壊除去することにより
加熱または冷却媒体通路孔を形成させるようにした。
To achieve the above object, according to the Invention The method for producing a mold having a heating and cooling passage holes according to the present invention, aluminum having a predetermined shape filled with disintegrating sand
The beam pipe was set at a predetermined position in the mold cavity, the melting point of the aluminum pipe into the cavity of the mold
Injecting a higher temperature aluminum alloy melt
Cast aluminum pipe, the aluminum alloy
The molten metal and the aluminum pipe are completely melted and integrally formed
Then, only the collapsible sand remaining after solidification of the aluminum alloy melt injected into the cavity is collapsed and removed to form the heating or cooling medium passage hole.

【0007】[0007]

【作用】所定形状に変形させるとともに崩壊性砂を詰め
アルミニウムパイプを鋳型のキャビティ部へ設置す
る。ついで、キャビティ部へ前記アルミニウムパイプの
融点よりも高い温度のアルミニウム合金溶湯を注入して
アルミニウムパイプとの完全溶融による鋳ぐるみが行わ
れ、境目のない一体成形金型の製造が行われる。こうす
ることにより従来のように金属パイプを介することなく
効率のよい加熱・冷却が行える。
An aluminum pipe deformed into a predetermined shape and filled with collapsible sand is placed in a cavity of a mold. Next, the aluminum pipe is inserted into the cavity.
Inject molten aluminum alloy at a temperature higher than the melting point
Casting is performed by complete melting with the aluminum pipe, and a seamless integrated mold is produced. By doing so, efficient heating and cooling can be performed without using a metal pipe as in the related art.

【0008】[0008]

【実施例】以下に、本発明に係る加熱・冷却通路孔を有
する成形用金型の製造方法の具体的実施例を図面を参照
して説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a specific embodiment of a method of manufacturing a molding die having a heating / cooling passage hole according to the present invention will be described with reference to the drawings.

【0009】まず、図1(1)に示すように本発明者等
は例えば純アルミニウムパイプ10(融点650℃)を
金型1表面のキャビティ部12に沿った類似形状に曲げ
加工しておく。前記アルミニウムパイプ10の一端部1
0aに盲栓14をした後、盲栓14側を下方にして起立
させ、開放状態の他端部10bから予め調合された崩壊
性砂16を投入容器18から投入し充填する(図1
(2))。なお、前記アルミニウムパイプ10へ崩壊性
砂16の充填中あるいは充填完了後は必要に応じて加振
しながら所定の嵩密度の範囲内に充填しておく。
First, as shown in FIG. 1A, the present inventors, for example, bend a pure aluminum pipe 10 (melting point: 650 ° C.) into a similar shape along the cavity 12 on the surface of the mold 1. One end 1 of the aluminum pipe 10
After the blind plug 14 is placed at 0a, the blind plug 14 is erected with the blind plug 14 side downward, and the disintegrable sand 16 prepared in advance is charged from the charging container 18 from the open end 10b (FIG. 1).
(2)). During or after the filling of the collapsible sand 16 into the aluminum pipe 10, the aluminum pipe 10 is filled within a predetermined bulk density range while vibrating as necessary.

【0010】崩壊性砂16をアルミニウムパイプ10に
充填した状態で、約200℃の温度にて10〜30分間
加熱すると崩壊性砂16は固化する(図2(1))。つ
いで、アルミニウムパイプ10内に崩壊性砂16が固化
したものを図2(2)に示すように下鋳型枠20aに取
付けた後、例えば700〜740℃のアルミニウム合金
溶湯22を柄杓24に汲んで図2(2)のように流し込
む。ここで、符号20bは上鋳型枠、26はセラミック
部、28は製品キャビティ部、30は鋳物砂部を示す。
なお、崩壊性砂16が固化したアルミニウムパイプ10
の下鋳型枠20aへの取付けに際し、アルミニウムパイ
プ10の外部表面から金型キャビティ部12までの深さ
が、例えば10〜30mmとなるようにし、さらに、複
数本のアルミニ ページ(4) ウムパイプ10を配設した場合、アルミニウムパイプ1
0の配列ピッチは例えば25mmとした。
When the collapsible sand 16 is filled with the aluminum pipe 10 and heated at a temperature of about 200 ° C. for 10 to 30 minutes, the collapsible sand 16 is solidified (FIG. 2A). Next, after the collapsible sand 16 solidified in the aluminum pipe 10 is attached to the lower mold frame 20a as shown in FIG. Pour in as shown in FIG. Here, reference numeral 20b denotes an upper mold frame, 26 denotes a ceramic portion, 28 denotes a product cavity portion, and 30 denotes a casting sand portion.
The aluminum pipe 10 in which the collapsible sand 16 is solidified
When the aluminum pipe 10 is attached to the lower mold frame 20a, the depth from the outer surface of the aluminum pipe 10 to the mold cavity 12 is, for example, 10 to 30 mm, and a plurality of aluminum pipes (4) If installed, aluminum pipe 1
The arrangement pitch of 0 is, for example, 25 mm.

【0011】而して、前述のようにしてアルミニウム合
金溶湯22を製品キャビティ部28に注入すると、アル
ミニウムパイプ10は溶融温度に達してアルミニウム合
金溶湯22に融着される。つまりアルミニウムパイプ1
0はアルミニウム合金溶湯22に溶融して鋳ぐるまれ、
これと一体化される。(図3(1))。こうして、注入
されたアルミニウム合金22を所定時間冷却させると、
製品キャビティ部28の溶湯22が固化したいわゆる製
品金型28ができる。この後、図3(1)において押湯
部32を切断して製品金型28とする。
When the molten aluminum alloy 22 is injected into the product cavity 28 as described above, the aluminum pipe 10 reaches the melting temperature and is fused to the molten aluminum alloy 22. In other words, aluminum pipe 1
0 is melted and cast into the aluminum alloy melt 22,
It is integrated with this. (FIG. 3 (1)). Thus, when the injected aluminum alloy 22 is cooled for a predetermined time,
A so-called product mold 28 in which the molten metal 22 in the product cavity 28 is solidified is obtained. Thereafter, the feeder portion 32 is cut in FIG.

【0012】製品金型28内部に充填された崩壊性砂1
6はアルミニウム合金溶湯22を製品キャビティ部28
に注入した際、溶湯熱により粘結性を喪失した状態とな
り、図3(2)に示すように、製品金型28を起立させ
ると崩壊性砂16は崩壊して落下し、金型28中に加熱
または冷却通路孔34を有した鋳造金型28ができる
(図3(3))。前述した製品金型28内の崩壊性砂1
6の除去の際には製品金型28を加振させてもよい。
Disintegrable sand 1 filled inside the product mold 28
6 is a process in which the molten aluminum alloy 22 is supplied to the product cavity portion 28.
When the product is poured into the mold, the caking property is lost due to the heat of the molten metal, and as shown in FIG. 3 (2), when the product mold 28 is raised, the collapsible sand 16 collapses and falls, and falls into the mold 28. Thus, a casting mold 28 having a heating or cooling passage hole 34 is formed (FIG. 3 (3)). Collapseable sand 1 in the above-mentioned product mold 28
When removing 6, the product mold 28 may be vibrated.

【0013】ここで図1ないし図3の実施例の諸条件
は、 鋳ぐるみパイプ 外形;10〜16mm(肉厚;1.0〜2.0mm) 材質;純アルミニウム(融点;650℃) 製品金型部 アルミニウム合金(溶解温度;700〜740℃) 材質;アルミニウム合金(AC4C) 崩壊性砂の組成 フィラ;レジンコーティング砂 平均粒度 90μm:20μm=2:3 バインダ;フェノール樹脂 添加量 0.8〜1.8% ページ(5) 崩壊助剤;有機酸アルカリ金属塩 (例えば酢酸Ca、酢酸Zu)添加量3% 硬化条件;200℃×10〜30分加熱。 崩壊条件;アルミニウム合金溶湯注入中溶湯熱により崩
壊性向上。
Here, the conditions of the embodiment shown in FIGS. 1 to 3 are as follows: Cast-in pipe External shape: 10 to 16 mm (wall thickness: 1.0 to 2.0 mm) Material: Pure aluminum (melting point: 650 ° C.) Mold part Aluminum alloy (melting temperature; 700 to 740 ° C) Material: Aluminum alloy (AC4C) Composition of collapsible sand Filler; Resin-coated sand Average particle size 90 µm: 20 µm = 2: 3 binder; 0.8% Page (5) Disintegration aid; Organic acid alkali metal salt (for example, Ca acetate, Zu acetate) added 3% Curing condition: Heating at 200 ° C. for 10 to 30 minutes. Disintegration conditions: Disintegration is improved by the heat of the molten aluminum alloy during casting.

【0014】本実施例では、加熱および冷却通路孔34
を同一ピッチで配設したが、金型キャビティ部12の複
雑形状度に応じてピッチを変えてもよい。
In the present embodiment, the heating and cooling passage holes 34
Are arranged at the same pitch, but the pitch may be changed according to the degree of complexity of the mold cavity 12.

【0015】[0015]

【発明の効果】以上説明したことからも明らかなよう
に、本発明では崩壊性砂を詰めた所定形状のアルミニウ
パイプを鋳型のキャビティ内の所定位置に設置し、前
記鋳型のキャビティ部へ前記アルミニウムパイプの融点
よりも高い温度のアルミニウム合金溶湯を注入して前記
アルミニウムパイプを鋳ぐるみ、前記アルミニウム合金
溶湯と前記アルミニウムパイプを完全溶融して一体形成
させ、キャビティ部へ注入したアルミニウム合金溶湯固
化後に残存する崩壊性砂のみを崩壊除去することにより
加熱または冷却媒体通路孔を形成させるようにしたこと
により、アルミニウム合金溶湯とアルミニウムパイプが
完全溶融して一体形成されるため、加熱または冷却時の
熱伝導率が大幅に向上する。また、所定位置に設けられ
た加熱・冷却通路孔に加熱・冷却媒体を流して金型を強
制冷却するので、金型への熱の出入を効果的に制御で
き、金型の寿命を延ばすだけでなく、金型で作られた製
品の品質レベルをも上げることができる。
As is evident from the above description, in the present invention, aluminum of predetermined shape filled with collapsible sand is used.
The beam pipe was set at a predetermined position in the mold cavity, the melting point of the aluminum pipe into the cavity of the mold
Injecting a higher temperature aluminum alloy melt
Cast aluminum pipe, the aluminum alloy
The molten metal and the aluminum pipe are completely melted and integrated
Heating or cooling medium passage holes are formed by collapsing and removing only the collapsible sand remaining after solidification of the aluminum alloy melt injected into the cavity, so that the aluminum alloy melt and the aluminum pipe are completely melted. Since they are integrally formed, the thermal conductivity during heating or cooling is greatly improved. In addition, since the mold is forcibly cooled by flowing a heating / cooling medium through the heating / cooling passage hole provided at a predetermined position, it is possible to effectively control the flow of heat into and out of the mold, and to prolong the life of the mold. In addition, it can raise the quality level of products made with molds.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る成形用金型の製造方法を示す説明
図である。
FIG. 1 is an explanatory view showing a method for manufacturing a molding die according to the present invention.

【図2】本発明に係る成形用金型の製造方法を示す説明
図である。
FIG. 2 is an explanatory view showing a method for manufacturing a molding die according to the present invention.

【図3】本発明に係る成形用金型の製造方法を示す説明
図である。 ページ(6)
FIG. 3 is an explanatory view showing a method for manufacturing a molding die according to the present invention. Page (6)

【図4】従来の金型の断面図である。FIG. 4 is a sectional view of a conventional mold.

【図5】従来の金型の断面図である。FIG. 5 is a sectional view of a conventional mold.

【符号の説明】[Explanation of symbols]

10 アルミニウムパイプ 12 キャビティ部 16 崩壊性砂 20 鋳型枠 22 アルミニウム合金溶湯 26 セラミック部 28 製品金型部 30 鋳物砂部 34 加熱または冷却通路孔 DESCRIPTION OF SYMBOLS 10 Aluminum pipe 12 Cavity part 16 Collapseable sand 20 Mold frame 22 Aluminum alloy molten metal 26 Ceramic part 28 Product mold part 30 Casting sand part 34 Heating or cooling passage hole

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−3960(JP,A) 特開 昭60−133966(JP,A) 特開 平4−197569(JP,A) 特開 平3−142058(JP,A) 特開 平3−142057(JP,A) 特開 昭60−184460(JP,A) 特開 平3−60858(JP,A) 特開 平4−305351(JP,A) (58)調査した分野(Int.Cl.7,DB名) B22D 19/06 B22D 19/00 ────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-60-3960 (JP, A) JP-A-60-133966 (JP, A) JP-A-4-197569 (JP, A) JP-A-3-3 142058 (JP, A) JP-A-3-142057 (JP, A) JP-A-60-184460 (JP, A) JP-A-3-60858 (JP, A) JP-A-4-305351 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) B22D 19/06 B22D 19/00

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 崩壊性砂を詰めた所定形状のアルミニウ
パイプを鋳型のキャビティ内の所定位置に設置し、前
記鋳型のキャビティ部へ前記アルミニウムパイプの融点
よりも高い温度のアルミニウム合金溶湯を注入して前記
アルミニウムパイプを鋳ぐるみ、前記アルミニウム合金
溶湯と前記アルミニウムパイプを完全溶融して一体形成
させ、キャビティ部へ注入したアルミニウム合金溶湯固
化後に残存する崩壊性砂のみを崩壊除去することにより
加熱または冷却媒体通路孔を形成させるようにしたこと
を特徴とする加熱・冷却通路孔を有する成形用金型の製
造方法。
1. An aluminum having a predetermined shape filled with collapsible sand
The beam pipe was set at a predetermined position in the mold cavity, the melting point of the aluminum pipe into the cavity of the mold
Injecting a higher temperature aluminum alloy melt
Cast aluminum pipe, the aluminum alloy
The molten metal and the aluminum pipe are completely melted and integrally formed
The heating or cooling medium passage hole is formed by collapsing and removing only the collapsible sand remaining after the aluminum alloy melt solidified injected into the cavity, thereby forming a heating or cooling passage hole. Mold manufacturing method.
JP5113284A 1993-05-14 1993-05-14 Manufacturing method of molding die having heating / cooling passage hole Expired - Lifetime JP3053042B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5113284A JP3053042B2 (en) 1993-05-14 1993-05-14 Manufacturing method of molding die having heating / cooling passage hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5113284A JP3053042B2 (en) 1993-05-14 1993-05-14 Manufacturing method of molding die having heating / cooling passage hole

Publications (2)

Publication Number Publication Date
JPH06320252A JPH06320252A (en) 1994-11-22
JP3053042B2 true JP3053042B2 (en) 2000-06-19

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