JPH02169147A - Method for forming lost forming pattern with core - Google Patents
Method for forming lost forming pattern with coreInfo
- Publication number
- JPH02169147A JPH02169147A JP32672588A JP32672588A JPH02169147A JP H02169147 A JPH02169147 A JP H02169147A JP 32672588 A JP32672588 A JP 32672588A JP 32672588 A JP32672588 A JP 32672588A JP H02169147 A JPH02169147 A JP H02169147A
- Authority
- JP
- Japan
- Prior art keywords
- core
- steam
- cooling water
- forming
- mold
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000498 cooling water Substances 0.000 claims abstract description 16
- 239000011324 bead Substances 0.000 claims abstract description 14
- 239000006260 foam Substances 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 5
- 238000005187 foaming Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000001174 ascending effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000010112 shell-mould casting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
- B22C7/023—Patterns made from expanded plastic materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、消失模型鋳造法に用いる発泡成形模型の成形
方法に関するものであり、詳しくは、中子を有する消失
模型の成形方法の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for forming a foam molding model used in a vanishing model casting method, and more particularly, to an improvement in a method for molding a vanishing model having a core. It is something.
（従来の技術）
中子を有する消失模型の成形方法として、特開昭６２−
２６３８４４号公報に示す様なものがあり、このものは
、中子を予め加温してこれを成形用金型内に設置し、次
に該金型の内面と中子の外面との間に形成されたキャビ
ティで発泡ビーズを発泡させて消失模型を成形する方法
である。(Prior art) As a molding method for a disappearing model having a core, Japanese Patent Application Laid-open No. 1986-
There is a method as shown in Japanese Patent No. 263844, in which a core is heated in advance and placed in a molding die, and then a mold is placed between the inner surface of the mold and the outer surface of the core. This is a method of forming a disappearing model by foaming foam beads in the formed cavity.
（発明が解決しようとする課題）
従来の成形方法では、中子を予め加熱炉等で４０〜９０
℃の範囲に加温した後、該金型内に設置しているが、こ
の程度の加温では中子近傍の発泡ビーズを均一に発泡さ
せ、かつその表面を接触させることが困難であり、中子
と接触する消失模型の表面を平滑化できず、鋳造時に該
模型の表面が鋳物表面に転写するため、鋳物表面が悪化
するという問題点がある。そこで、本発明はかかる問題
点を解消するためになされたもので、中子と接触する消
失模型の表面を平滑化できる成形方法を提供するもので
ある。(Problem to be solved by the invention) In the conventional molding method, the core is heated in a heating furnace etc.
After heating the beads to a temperature range of ℃, they are placed in the mold, but with this level of heating, it is difficult to uniformly foam the foam beads near the core and bring their surfaces into contact. There is a problem in that the surface of the disappearing model that comes into contact with the core cannot be smoothed, and the surface of the model is transferred to the surface of the casting during casting, resulting in deterioration of the surface of the casting. The present invention has been made to solve these problems, and provides a molding method that can smooth the surface of the disappearing model that comes into contact with the core.
（課題を解決するための手段）
本発明は、キャビティに発泡ビーズを充填した後、金型
内に配設された中子内に蒸気および冷却水を順次供給す
る消失模型の成形方法である。(Means for Solving the Problems) The present invention is a method for molding a disappearing model, in which a cavity is filled with foam beads and then steam and cooling water are sequentially supplied into a core disposed in a mold.
（作用）
型締めされた金型のキャビティに発泡ビーズを充填した
後、中子内に蒸気を供給すると、中子が加熱され中子近
傍の発泡ビーズを均一に加熱発泡する０次いで５Ｍ中子
内に冷却水を供給すると、中子が均一に冷却され、中子
と接触する消失模型の表面が平滑化する。(Function) After filling the cavity of the clamped mold with foam beads, when steam is supplied into the core, the core is heated and the foam beads near the core are uniformly heated and foamed. When cooling water is supplied inside the core, the core is cooled uniformly, and the surface of the disappearing model that comes into contact with the core is smoothed.
（実施例）
第１図は本発明方法に使用する消失模型成形用金型であ
り、固定型１および可動型２は一般的な金型による成形
型であり、固定型１が型枠３に装着されると共に、可動
型２が型枠４に装着され。(Example) Figure 1 shows a mold for forming a vanishing model used in the method of the present invention, in which the fixed mold 1 and the movable mold 2 are general molds, and the fixed mold 1 is attached to the mold frame 3. At the same time, the movable mold 2 is mounted on the formwork 4.
固定型１および可動型２には、型締め時にキャビティ５
を形成する凹部が設けられ、枠体３．４には蒸気孔３ａ
、４ａおよび冷却水孔３ｂ、４ｂが形成されている。固
定型１および可動型２の合せ面６には中空中子７を収容
するための凹部８が設けられ、凹部８は蒸気および冷却
水を供給するための蒸気供給管９ａおよび冷却水供給管
９ｂと連通ずると共に、蒸気および冷却水を排出するた
めの排出管１０と連通し、中子７と凹部８の端面との間
に０リング（図示せず）が介装されている。The fixed mold 1 and the movable mold 2 have a cavity 5 when the molds are clamped.
The frame body 3.4 is provided with a recess that forms a steam hole 3a.
, 4a and cooling water holes 3b, 4b are formed. A recess 8 for accommodating the hollow core 7 is provided in the mating surface 6 of the fixed mold 1 and the movable mold 2, and the recess 8 has a steam supply pipe 9a and a cooling water supply pipe 9b for supplying steam and cooling water. An O-ring (not shown) is interposed between the core 7 and the end surface of the recess 8, communicating with a discharge pipe 10 for discharging steam and cooling water.
中空中子・７はシェルモールド法、コールドボックス法
、ＣＯ２法等の公知の造型方法で造型され。The hollow core 7 is molded using a known molding method such as a shell molding method, a cold box method, or a CO2 method.
内部に蒸気および冷却水が流通するための通路が形成さ
れている。A passage for steam and cooling water to flow inside is formed.
固定型１に中空中子７を設置した後、可動型２を−１−
昇して両型１，２を型締めした後、キャビティ５内に発
泡ビーズ（図示せず）を充填し、蒸気孔３ａ、４ａを介
して固定型１および可動型２の蒸気室１１．１２内に蒸
気を供給すると共に、蒸気供給管９ａを介して中子７の
中空部に蒸気を供給して５！泡ビーズ（図示せず）を均
一に加熱発泡させ、中子７を完全に鋳包むまで発泡を続
ける。After installing the hollow core 7 on the fixed mold 1, move the movable mold 2 to -1-
After lifting and clamping both molds 1 and 2, the cavity 5 is filled with foam beads (not shown), and the steam chambers 11 and 12 of the fixed mold 1 and the movable mold 2 are filled through the steam holes 3a and 4a. At the same time as supplying steam into the hollow part of the core 7 through the steam supply pipe 9a, 5! Foam beads (not shown) are uniformly heated and foamed, and foaming is continued until the core 7 is completely enveloped.
しかる後、冷却水孔３ｂ、４ｂを介して蒸気室１１．１
２内に冷却水を供給すると共に、冷却水供給菅９ｂに冷
却水を供給すると、）（）失模型１３および中子７が均
一に冷却され、中子７と接触する消失模型１３の表面が
平滑化する。After that, the steam chamber 11.1 is passed through the cooling water holes 3b and 4b.
When cooling water is supplied into the cooling water supply tube 9b as well as cooling water is supplied into the cooling water supply tube 9b, the lost model 13 and the core 7 are cooled uniformly, and the surface of the lost model 13 in contact with the core 7 is cooled. Smooth.
可動型２を下降して両型１．２を型開きした後。After lowering the movable mold 2 and opening both molds 1 and 2.
キャビティ５から消失模型１３を取り出すと、第２図に
示すように中子７を有する消失模型１３が得られる。When the disappearing model 13 is taken out from the cavity 5, the disappearing model 13 having the core 7 is obtained as shown in FIG.
上記実施例において、固定型１に中空中子７を設置した
が、可動型２に中空中子７を設置してもよい、また、上
記実施例では、中子に中空部を形成しているが、中子内
に連通した間隙が形成されていれば、上記実施例と同様
の作用を奏する。In the above embodiment, the hollow core 7 is installed in the fixed mold 1, but the hollow core 7 may be installed in the movable mold 2. Also, in the above embodiment, a hollow part is formed in the core. However, if a communicating gap is formed within the core, the same effect as in the above embodiment can be achieved.
（発明の効果）
本発明方法によれば、キャビティに発泡ビーズを充填し
た後、金型内に配設された中子内に蒸気および冷却水を
順次供給するから、中子の加熱冷却が自在となり、中子
近傍の発泡ビーズが均一に発泡すると共に、融着が良好
であり、金型と接触した消失模型の表面と遜′色ない平
滑性を付与できる。(Effects of the Invention) According to the method of the present invention, after filling the cavity with foam beads, steam and cooling water are sequentially supplied into the core placed in the mold, so the core can be heated and cooled freely. As a result, the foamed beads near the core are uniformly foamed, the fusion is good, and the surface of the disappearing model in contact with the mold can be given a smoothness comparable to that of the surface.
第１図は本発明方法に使用する消失模型成形用金型の断
面図、第２図は中子を有する消失模型の断面図である。
■・・・固定型、２・・・可動型、５・・・キャビティ
、７・・・中空中子、１３・・・消失模型。
第１図FIG. 1 is a cross-sectional view of a mold for forming a disappearing model used in the method of the present invention, and FIG. 2 is a cross-sectional view of a disappearing model having a core. ■...Fixed type, 2...Movable type, 5...Cavity, 7...Hollow core, 13...Disappearance model. Figure 1
Claims (1)
キャビティに発泡ビーズを充填した後、金型内に配設さ
れた中子内に蒸気および冷却水を順次供給することを特
徴とする中子付消失模型の成形方法。In a method of forming a disappearing model for casting having a core,
A method for molding a vanishing model with a core, which comprises filling a cavity with foam beads and then sequentially supplying steam and cooling water into a core disposed in a mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63326725A JP2565391B2 (en) | 1988-12-23 | 1988-12-23 | Molding method for vanishing model with core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63326725A JP2565391B2 (en) | 1988-12-23 | 1988-12-23 | Molding method for vanishing model with core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02169147A true JPH02169147A (en) | 1990-06-29 |
| JP2565391B2 JP2565391B2 (en) | 1996-12-18 |
Family
ID=18190978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63326725A Expired - Lifetime JP2565391B2 (en) | 1988-12-23 | 1988-12-23 | Molding method for vanishing model with core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2565391B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2698296A1 (en) * | 1992-11-23 | 1994-05-27 | Peugeot | Process for manufacturing metal parts by molding in a lost model, model with incorporated hollow insert obtained by this method and metal part obtained using this model. |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62119574A (en) * | 1985-11-15 | 1987-05-30 | トムソン−セエスエフ | Electro-optic display screen using control transistor |
-
1988
- 1988-12-23 JP JP63326725A patent/JP2565391B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62119574A (en) * | 1985-11-15 | 1987-05-30 | トムソン−セエスエフ | Electro-optic display screen using control transistor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2698296A1 (en) * | 1992-11-23 | 1994-05-27 | Peugeot | Process for manufacturing metal parts by molding in a lost model, model with incorporated hollow insert obtained by this method and metal part obtained using this model. |
| EP0599680A1 (en) * | 1992-11-23 | 1994-06-01 | Automobiles Peugeot | Process for producing metal parts by lost pattern moulding, pattern with incorporated hollow insert obtained by said process and metal part obtained using said pattern |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2565391B2 (en) | 1996-12-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091003 Year of fee payment: 13 |