JPH0592234A - Lost pattern for casting - Google Patents
Lost pattern for castingInfo
- Publication number
- JPH0592234A JPH0592234A JP16767791A JP16767791A JPH0592234A JP H0592234 A JPH0592234 A JP H0592234A JP 16767791 A JP16767791 A JP 16767791A JP 16767791 A JP16767791 A JP 16767791A JP H0592234 A JPH0592234 A JP H0592234A
- Authority
- JP
- Japan
- Prior art keywords
- model
- adhesive
- casting
- fitted
- joining
- 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
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複数の分割模型を互い
に接合してなる鋳造用消失模型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cast vanishing model in which a plurality of split models are joined together.
【０００２】[0002]
【従来の技術】従来、この種の鋳造用消失模型として
は、図９に示すものがある。この鋳造用消失模型１は、
上型模型２(分割模型)と下型模型３(分割模型)とを互い
に接合してなるものである。これら上下型模型２，３の
各接合面２ａ，３ａは平坦な面をなしている。これら接
合面２ａ，３ａどうしを、接着剤Ｍ(例えば、ホットメ
ルト形接着剤など)を介して互いに接合することにより
上型模型２と下型模型３とが互いに接合される。2. Description of the Related Art Heretofore, there is a model for vanishing for casting of this type as shown in FIG. This casting disappearance model 1 is
The upper model 2 (divided model) and the lower model 3 (divided model) are joined together. The joint surfaces 2a and 3a of the upper and lower models 2 and 3 are flat surfaces. The upper model 2 and the lower model 3 are bonded to each other by bonding the bonding surfaces 2a and 3a to each other with an adhesive M (for example, a hot-melt adhesive).
【０００３】[0003]
【発明が解決しようとする課題】上記構成の鋳造用消失
模型１においては、平坦な接合面２ａ，３ａどうしを接
着剤Ｍを介して互いに接合している。このため、図９に
示すように、接合面２ａ，３ａの間から接着剤Ｍがはみ
出してしまう。したがって、鋳造後の製品の表面にこの
はみ出し部分に対応したバリが発生してしまい、このバ
リ取り作業に非常に手間がかかるという問題がある。ま
た、接着剤Ｍが流動状態にあるとき、接合面２ａ，３ａ
どうしが滑って上型模型２と下型模型３とがずれてしま
うおそれがある。このため、鋳造後の製品の精度が低下
するという問題がある。さらに、接着剤Ｍとしてホット
メルト形接着剤を使用した場合には、接着剤を接合面に
均一に塗布することが困難なため、接着剤層の厚さが不
均一となる。このため、接合面２ａ，３ａの間に非接着
部分が生じて隙間ができてしまう。したがって、鋳造後
の製品の表面にこの隙間に対応した亀裂状の凹部が発生
して品質が低下するという問題がある。本発明は、以上
のような従来の技術的課題を背景になされたものであ
り、複数の分割模型の接合面の間に接着剤のはみ出しが
なく、しかも接合面どうしのずれがなく、さらに、接合
面の間に隙間が発生しない鋳造用消失模型を提供するこ
とを目的とする。In the casting disappearance model 1 having the above structure, the flat joint surfaces 2a and 3a are joined to each other with the adhesive M. For this reason, as shown in FIG. 9, the adhesive M protrudes from between the joint surfaces 2a and 3a. Therefore, a burr corresponding to the protruding portion is generated on the surface of the product after casting, and there is a problem that this deburring work is very troublesome. Further, when the adhesive M is in a fluid state, the joint surfaces 2a, 3a
There is a possibility that the upper model 2 and the lower model 3 may slip from each other due to slipping. Therefore, there is a problem that the accuracy of the product after casting is reduced. Furthermore, when a hot-melt type adhesive is used as the adhesive M, it is difficult to apply the adhesive uniformly to the joint surface, and therefore the thickness of the adhesive layer becomes uneven. For this reason, a non-bonded portion is generated between the joint surfaces 2a and 3a, and a gap is created. Therefore, there is a problem that cracked concave portions corresponding to the gaps are generated on the surface of the product after casting and the quality is deteriorated. The present invention has been made against the background of the conventional technical problems as described above, there is no protrusion of the adhesive between the joint surfaces of the plurality of split models, and there is no deviation between the joint surfaces, and further, It is an object of the present invention to provide a vanishing model for casting in which no gap is generated between the joint surfaces.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記目的を達
成するために、複数の分割模型を互いに接合してなる鋳
造用消失模型において、互いに接合される２つの接合面
のうちの一方の接合面に凹状の被嵌合部を形成し、他方
の接合面に前記被嵌合部に嵌合する凸状の嵌合部を形成
し、前記被嵌合部に装填した接着剤を介して前記被嵌合
部に前記嵌合部を嵌合したことを特徴とするものであ
る。In order to achieve the above-mentioned object, the present invention provides a vanishing cast model in which a plurality of split models are joined together, and one of two joining surfaces to be joined together. A concave mating portion is formed on the joint surface, and a convex mating portion that mates with the mating portion is formed on the other joint surface, and the adhesive is loaded into the mating portion. The fitting part is fitted to the fitted part.
【０００５】[0005]
【作用】本発明の鋳造用消失模型によれば、互いに接合
される２つの接合面のうちの一方の接合面に凹状の被嵌
合部が形成され、他の接合面に凸状の嵌合部が形成され
ている。そして、被嵌合部に装填された接着剤を介して
被嵌合部に嵌合部が嵌合されている。According to the vanishing model for casting of the present invention, a concave fitting portion is formed on one of the two joining surfaces to be joined to each other and a convex fitting portion is formed on the other joining surface. Parts are formed. Then, the fitting portion is fitted to the fitted portion via the adhesive loaded in the fitted portion.
【０００６】[0006]
【実施例】以下、本発明の一実施例を図１〜図３を参照
して説明する。図２は、本発明にかかる鋳造用消失模型
４を示すものであり、この鋳造用消失模型４は、上型模
型(分割模型)５と下型模型(分割模型)６とを備えてい
る。上型模型５は、角筒状の基体５１と、この基体５１
の下端部に形成された角状のフランジ部５２とから構成
されている。このフランジ部５２の下端面周縁には、図
３に示すように、下方に向けて突出する突出部５３が全
周にわたって形成されている。この突出部５３の先端部
には、図１に示すように、接合面５ａが形成されてい
る。この接合面５ａは平坦な面をなしており、その中央
部には、図１および図２に示すように、下方に向けて突
出する断面四角形の凸部(嵌合部)５４が全周にわたって
形成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 2 shows a casting disappearance model 4 according to the present invention. The casting disappearance model 4 includes an upper mold model (divided model) 5 and a lower mold model (divided model) 6. The upper model 5 includes a rectangular tubular base body 51 and the base body 51.
And a rectangular flange portion 52 formed at the lower end of the. As shown in FIG. 3, a protrusion 53 that protrudes downward is formed on the entire periphery of the lower end surface of the flange 52. As shown in FIG. 1, a joint surface 5a is formed at the tip of the protruding portion 53. The joining surface 5a is a flat surface, and a convex portion (fitting portion) 54 having a quadrangular cross section that protrudes downward as shown in FIGS. Has been formed.
【０００７】下型模型６は、上型模型５と同様に、角筒
状の基体６１と、この基体６１の上端部に形成されたフ
ランジ部６２とから構成されている。このフランジ部６
２の上端面周縁には、図３に示すように、上方に向けて
突出する突出部６３が全周にわたって形成されている。
この突出部６３の先端部には、図１に示すように、接合
面６ａが形成されている。この接合面６ａは、平坦な面
をなしており、この面の上記凸部５４に対応する位置に
は、内部に向かって延びる断面四角形の凹部(被嵌合部)
６４が全周にわたって形成されている。この凹部６４
は、図１に示すように、上下方向と幅方向との各寸法が
凸部５４のそれらより若干長くなっている。また、この
凹部６４には、ホットメルト形接着剤Ｈが装填されるよ
うになっている。この凹部６４にホットメルト形接着材
Ｈを装填した後、凹部６４に凸部５４を嵌め込むことに
より、上型模型５と下型模型６とが互いに接合される。Like the upper model 5, the lower model 6 is composed of a rectangular tube-shaped base body 61 and a flange portion 62 formed on the upper end portion of the base body 61. This flange 6
As shown in FIG. 3, a projecting portion 63 projecting upward is formed around the upper end surface of 2 over the entire circumference.
As shown in FIG. 1, a joint surface 6a is formed at the tip of the protruding portion 63. The joint surface 6a is a flat surface, and a concave portion (fitted portion) having a quadrangular cross section that extends toward the inside is formed at a position on the surface corresponding to the convex portion 54.
64 is formed all around. This recess 64
1, each dimension in the vertical direction and the width direction is slightly longer than those of the convex portion 54. The hot melt adhesive H is loaded in the recess 64. After the hot melt adhesive H is loaded in the recess 64, the protrusion 54 is fitted into the recess 64, so that the upper model 5 and the lower model 6 are joined to each other.
【０００８】次に、鋳造用消失模型４の製造方法につい
て、図４〜図９を参照して説明する。まず、図４に示す
ように、内部に上型模型５の形状に対応するキャビティ
Ｋ1が形成された上型模型用の金型７をセットする。次
に、図５に示すように、注入口Ｔ1からキャビティＫ1内
に、直径約０．９ｍｍ程度に予備発泡させた発泡プラス
チックＰ1を注入し、金型７内をスチーム加熱する。す
ると、発泡プラスチックＰ1がキャビティＫ1の全域に膨
張充填される。次に、金型７を水冷却して発泡プラスチ
ックＰ1を固化させる。その後、離型することにより、
接合面５ａに凸部５４が形成された上型模型５が得られ
る。Next, a method of manufacturing the disappearance model 4 for casting will be described with reference to FIGS. First, as shown in FIG. 4, a mold 7 for an upper mold having a cavity K 1 corresponding to the shape of the upper mold 5 therein is set. Next, as shown in FIG. 5, the foamed plastic P 1 pre-foamed with a diameter of about 0.9 mm is injected from the injection port T 1 into the cavity K 1 to heat the inside of the die 7 with steam. Then, the foamed plastic P 1 is expanded and filled in the entire area of the cavity K 1 . Next, the mold 7 is cooled with water to solidify the foamed plastic P 1 . After that, by releasing,
The upper model 5 having the convex portion 54 formed on the joint surface 5a is obtained.
【０００９】次に、図６に示すように、内部に下型模型
６の形状に対応するキャビティＫ2が形成された下型模
型用の金型８をセットする。次に、図７に示すように、
注入口Ｔ2からキャビティＫ2内に、直径約０．９ｍｍ程
度に予備発泡させた発泡プラスチックＰ2を注入し、金
型８内をスチーム加熱する。すると、発泡プラスチック
Ｐ2がキャビティＫ2の全域に膨張充填される。次に、金
型８を水冷却して発泡プラスチックＰ2を固化させる。
その後、離型することにより、接合面６ａに凹部６４が
形成された下型模型６が得られる。Next, as shown in FIG. 6, a lower mold die 8 having a cavity K 2 corresponding to the shape of the lower mold 6 therein is set. Next, as shown in FIG.
The foamed plastic P 2 pre-foamed with a diameter of about 0.9 mm is injected from the injection port T 2 into the cavity K 2 , and the mold 8 is heated with steam. Then, the foamed plastic P 2 is expanded and filled in the entire area of the cavity K 2 . Next, the mold 8 is cooled with water to solidify the foamed plastic P 2 .
After that, the mold is released to obtain the lower model 6 having the concave surface 64 formed in the joint surface 6a.
【００１０】次に、噴射装置(図示せず。)などにより下
型模型６の凹部６４にホットメルト形接着剤Ｈを装填す
る。その後、図８に示すように、下型模型６の凹部６４
に上型模型５の凸部５４を嵌め込む。すると、ホットメ
ルト形接着剤Ｈが凹部６４と凸部５４との間の空隙に充
填された状態で接合面５ａ，６ａどうしが互いに接合さ
れ、図１に示す状態となる。Next, the hot-melt adhesive H is loaded in the recess 64 of the lower model 6 by an injection device (not shown) or the like. Then, as shown in FIG.
The convex portion 54 of the upper model 5 is fitted in. Then, the joining surfaces 5a and 6a are joined together in a state where the hot melt adhesive H is filled in the space between the concave portion 64 and the convex portion 54, and the state shown in FIG. 1 is obtained.
【００１１】上記構成の鋳造用消失模型４においては、
ホットメルト形接着剤Ｈが凹部６４と凸部５４との間の
空隙に充填された状態で接合面５ａ，６ａどうしが互い
に接合されている。このため、従来のように、接合面５
ａ、６ａの間に接着剤を介在させる必要がなくなる。し
たがって、接合面５ａ，６ａどうしを接合する際、接合
面５ａ，６ａの間から接着剤がはみ出すことはない。In the casting disappearance model 4 having the above-mentioned structure,
The bonding surfaces 5a and 6a are bonded to each other in a state where the hot melt adhesive H is filled in the space between the concave portion 64 and the convex portion 54. Therefore, as in the conventional case, the joint surface 5
It is not necessary to interpose an adhesive between a and 6a. Therefore, when the joining surfaces 5a and 6a are joined together, the adhesive does not protrude from between the joining surfaces 5a and 6a.
【００１２】また、ホットメルト形接着剤Ｈが流動状態
にあるときにおいても、従来のように、接合面５ａ，６
ａどうしが滑って上型模型５と下型模型６とがずれるこ
とはない。Further, even when the hot-melt adhesive H is in a fluidized state, the joining surfaces 5a, 6 can be formed in the conventional manner.
a The upper model 5 and the lower model 6 do not slip due to the sliding of each other.
【００１３】さらに、接合面にホットメルト形接着剤Ｈ
を塗布する必要がないため、従来のように、接合面５
ａ，６ａの間に隙間が発生することはない。Furthermore, a hot melt adhesive H is applied to the joint surface.
Since it is not necessary to apply
No gap is generated between a and 6a.
【００１４】本発明は、上記実施例に限定されるもので
はなく、本発明の要旨を逸脱しない範囲において変更可
能である。例えば、本実施例では、接着剤としてホット
メルト形接着剤Ｈを使用しているが、これに代えて溶剤
形接着剤あるいはエマルジョン形接着剤などを適宜選択
することも可能である。The present invention is not limited to the above embodiments, but can be modified within the scope of the present invention. For example, in this embodiment, the hot melt adhesive H is used as the adhesive, but instead of this, a solvent adhesive or an emulsion adhesive may be appropriately selected.
【００１５】また、本実施例では、凸部５４および凹部
６４の断面形状が四角形のものを使用しているが、これ
に代えて断面形状が三角形、半円形あるいは台形などの
ものを選択することも可能である。Further, in the present embodiment, the convex portion 54 and the concave portion 64 have a quadrangular sectional shape, but instead of this, a sectional shape having a triangular shape, a semicircular shape or a trapezoidal shape may be selected. Is also possible.
【００１６】さらに、本実施例では、凸部５４および凹
部６４を接合面５ａ，６ａの全周にわたって形成してい
るが、必ずしもこのようにする必要はなく、凸部５４お
よび凹部６４を接合面５ａ，６ａの一部にのみ形成する
ことも可能である。Further, in this embodiment, the convex portion 54 and the concave portion 64 are formed over the entire circumference of the joint surfaces 5a and 6a, but it is not always necessary to do so, and the convex portion 54 and the concave portion 64 are formed. It is also possible to form only a part of 5a and 6a.
【００１７】[0017]
【発明の効果】本発明の鋳造用消失模型によれば、互い
に接合される２つの接合面のうちの一方の接合面に凹状
の被嵌合部を形成し、他方の接合面に凸状の嵌合部を形
成し、前記被嵌合部に装填した接着剤を介して前記被嵌
合部に前記嵌合部を嵌合している。このため、複数の分
割模型の接合面の間に接着剤がはみ出すことがなく、し
かも接合面どうしがずれることがなく、さらに、接合面
に隙間が発生することがないという効果などが得られ
る。According to the vanishing model for casting of the present invention, a concave fitting portion is formed on one of the two joining surfaces to be joined to each other and a convex fitting portion is formed on the other joining surface. A fitting portion is formed, and the fitting portion is fitted to the fitted portion via an adhesive loaded in the fitted portion. For this reason, the adhesive does not protrude between the joint surfaces of the plurality of divided models, the joint surfaces do not shift from each other, and further, a gap is not generated in the joint surfaces.
【図１】図３のＡ部詳細図である。FIG. 1 is a detailed view of part A of FIG.
【図２】鋳造用消失模型の全体斜視図である。FIG. 2 is an overall perspective view of a vanishing model for casting.
【図３】図２のIII−III断面図である。FIG. 3 is a sectional view taken along line III-III in FIG.
【図４】上型模型用の金型をセットした状態を示す要部
断面図である。FIG. 4 is a cross-sectional view of essential parts showing a state in which a mold for an upper mold model has been set.
【図５】上型模型用の金型内に発泡プラスチックを充填
した状態を示す要部断面図である。FIG. 5 is a cross-sectional view of essential parts showing a state in which foamed plastic is filled in a mold for an upper mold model.
【図６】下型模型用の金型をセットした状態を示す要部
断面図である。FIG. 6 is a cross-sectional view of essential parts showing a state in which a lower mold die has been set.
【図７】下型模型用の金型内に発泡プラスチックを充填
した状態を示す要部断面図である。FIG. 7 is a cross-sectional view of essential parts showing a state in which foamed plastic is filled in a lower mold die.
【図８】上型模型と下型模型との接合方法を説明するた
め全体斜視図である。FIG. 8 is an overall perspective view for explaining a method of joining the upper model and the lower model.
【図９】従来例の鋳造用消失模型を示す要部断面図であ
る。FIG. 9 is a cross-sectional view of essential parts showing a conventional casting disappearance model.
４ 鋳造用消失模型 ５ 上型模型(分割模型) ５ａ 接合面 ５４ 凸部(嵌合部) ６ 下型模型(分割模型) ６ａ 接合面 ６４ 凹部(被嵌合部) Ｈ ホットメルト形接着剤 4 Disappearing model for casting 5 Upper model (divided model) 5a Bonding surface 54 Convex part (fitting part) 6 Lower model (divided model) 6a Bonding surface 64 Recessed part (fitted part) H Hot-melt adhesive
Claims (1)
造用消失模型において、互いに接合される２つの接合面
のうちの一方の接合面に凹状の被嵌合部を形成し、他方
の接合面に前記被嵌合部に嵌合する凸状の嵌合部を形成
し、前記被嵌合部に装填した接着剤を介して前記被嵌合
部に前記嵌合部を嵌合したことを特徴とする鋳造用消失
模型。1. A vanishing model for casting, which is formed by joining a plurality of split models to each other, wherein a concave fitting portion is formed on one of two joining surfaces to be joined together, and the other is joined. A convex fitting portion that fits into the fitted portion is formed on the surface, and the fitting portion is fitted into the fitted portion via an adhesive loaded in the fitted portion. Disappearing model for casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16767791A JPH0592234A (en) | 1991-06-12 | 1991-06-12 | Lost pattern for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16767791A JPH0592234A (en) | 1991-06-12 | 1991-06-12 | Lost pattern for casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0592234A true JPH0592234A (en) | 1993-04-16 |
Family
ID=15854177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16767791A Pending JPH0592234A (en) | 1991-06-12 | 1991-06-12 | Lost pattern for casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0592234A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331237A (en) * | 2013-07-23 | 2013-10-02 | 解明国 | Automatic pattern piece gluing device for evaporative pattern for casting |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03254332A (en) * | 1990-03-02 | 1991-11-13 | Toyota Motor Corp | Structure of joining part in consumable pattern and device for applying adhesive to joining part |
-
1991
- 1991-06-12 JP JP16767791A patent/JPH0592234A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03254332A (en) * | 1990-03-02 | 1991-11-13 | Toyota Motor Corp | Structure of joining part in consumable pattern and device for applying adhesive to joining part |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331237A (en) * | 2013-07-23 | 2013-10-02 | 解明国 | Automatic pattern piece gluing device for evaporative pattern for casting |
| CN103331237B (en) * | 2013-07-23 | 2016-01-13 | 解明国 | Casting evaporative pattern matrix automatic glue spreading device |
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