JPH04274859A - Cooling method for casting die for wheel for vehicle - Google Patents

Cooling method for casting die for wheel for vehicle

Info

Publication number
JPH04274859A
JPH04274859A JP3430891A JP3430891A JPH04274859A JP H04274859 A JPH04274859 A JP H04274859A JP 3430891 A JP3430891 A JP 3430891A JP 3430891 A JP3430891 A JP 3430891A JP H04274859 A JPH04274859 A JP H04274859A
Authority
JP
Japan
Prior art keywords
wheel
mold
cooling
water
cooled
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
Application number
JP3430891A
Other languages
Japanese (ja)
Other versions
JP2990445B2 (en
Inventor
Akio Tobitaka
飛鷹 昭夫
Tsutomu Terajima
寺島 努
Yutaka Haga
羽賀 裕
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP3034308A priority Critical patent/JP2990445B2/en
Priority to GB9201479A priority patent/GB2253171B/en
Publication of JPH04274859A publication Critical patent/JPH04274859A/en
Priority to US08/068,261 priority patent/US5314001A/en
Application granted granted Critical
Publication of JP2990445B2 publication Critical patent/JP2990445B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE:To offer the cooling method for a casting die which can cast efficiently a wheel having a rib on the inside surface without generating such a defect as a drawing defect, etc., on the outside surface. CONSTITUTION:A die 1 of the outside surface side of a wheel is water-cooled by a water-cooled pipe 10, and on the other hand, a rib forming part 13 of a die 2 of the inside surface side of the wheel is subjected to forced air cooling by an air passage 16 provided along this part. Water cooling has the better cooling performance than air cooling, therefore, a molten metal in a cavity 4 is solidified from the outside surface side, and such a defect as a drawing defect, etc., is not generated on the outside surface. when the inside surface side is solidified, the part of the rib is solidified without generating so much delay, compared with other part on the inside surface by forced air cooling, and the casting cycle time is shortened.

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、アルミホイール等の車
両用ホイールを低圧鋳造する鋳造用金型の冷却方法に関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cooling a casting mold for low-pressure casting of vehicle wheels such as aluminum wheels.

【0002】0002

【従来の技術】従来、実開昭63−6157号公報や特
開平2−151344号公報に見られるように、下型と
上型とその周囲の分割型とから成る金型を用い、エア等
のガス圧を利用して金型内のキャビティに溶湯を注入し
て車両用ホイールを低圧鋳造するものは知られており、
このものでは、車体実装時に外側を向くホイールの外側
面側の金型たる下型に水冷通路を形成して、該通路に流
す冷却水により下型を水冷し、ホイール外側面の凝固を
早めて外側面にひけ等の欠陥を生じないようにしている
[Prior Art] Conventionally, as seen in Japanese Utility Model Application No. 63-6157 and Japanese Patent Application Laid-Open No. 2-151344, a mold consisting of a lower mold, an upper mold, and a divided mold around the lower mold is used. It is known that low-pressure casting of vehicle wheels is performed by injecting molten metal into a cavity in a mold using the gas pressure of
In this method, a water-cooling passage is formed in the lower die of the mold on the outer side of the wheel facing outward when mounted on the car body, and the lower die is water-cooled by the cooling water flowing through the passage, thereby accelerating the solidification of the outer side of the wheel. This prevents defects such as sink marks from occurring on the outer surface.

【0003】0003

【発明が解決しようとする課題】ところで、ホイールの
内側面に補強用のリブを形成する場合、鋳造サイクルタ
イムの短縮のためにホイールの内側面側の金型も冷却す
ることが望まれるが、内側面側の溶湯が早く凝固すると
、外側面側の未凝固の溶湯が内側面側に引かれて外側面
にひけを生ずることから、現状では内側面側の金型の積
極的な冷却は行っていない。
By the way, when forming reinforcing ribs on the inner surface of the wheel, it is desirable to also cool the mold on the inner surface of the wheel in order to shorten the casting cycle time. If the molten metal on the inside side solidifies quickly, the unsolidified molten metal on the outside side will be drawn toward the inside side, causing sinkage on the outside side, so currently active cooling of the mold on the inside side is not done. Not yet.

【0004】本発明は、以上の点に鑑み、ホイールの内
側面側の金型を積極的に冷却して鋳造サイクルタイムを
短縮できるようにすると共に、内側面側の金型と外側面
側の金型との冷却性能を異ならせてホイール外側面にひ
け等の欠陥を生じないようにしたホイール鋳造用金型の
冷却方法を提供することをその目的としている。
[0004] In view of the above points, the present invention enables the mold on the inner side of the wheel to be actively cooled to shorten the casting cycle time, and the mold on the inner side and the outer side. The object of the present invention is to provide a method for cooling a wheel casting mold, which differs in cooling performance from that of the mold to prevent defects such as sink marks from occurring on the outer surface of the wheel.

【0005】[0005]

【課題を解決するための手段】上記目的を達成すべく、
本発明では、車体実装時に外側を向くホイールの外側面
側の金型を水冷すると共に、ホイールの内側面側の金型
にホイール内側面に形成するリブの成形部に沿わせて空
冷通路を形成し、該成形部を強制空冷するようにした。
[Means for solving the problem] In order to achieve the above purpose,
In the present invention, when mounting on a vehicle body, the mold on the outer side of the wheel facing outward is water-cooled, and an air cooling passage is formed in the mold on the inner side of the wheel along the molded part of the rib formed on the inner side of the wheel. Then, the molded part was forced to air cool.

【0006】[0006]

【作用】ホイール内側面側の金型のリブ成形部を強制空
冷することにより、リブの凝固時間が短縮される。一方
、水冷を行うホイール外側面側の金型は空冷を行う内側
面側の金型より早く冷却され、ホイールは外側面側から
凝固して、外側面にひけ等の欠陥は生じない。
[Operation] By forcing the rib molding part of the mold on the inner side of the wheel to cool with air, the solidification time of the ribs is shortened. On the other hand, the mold on the outer surface of the wheel that is water-cooled is cooled faster than the mold on the inner surface that is air-cooled, and the wheel solidifies from the outer surface, so that defects such as sink marks do not occur on the outer surface.

【0007】[0007]

【実施例】図1は車両用ホイールの鋳造金型を示し、該
金型は、下型1と、昇降自在な上型2と、該両型1,2
を囲繞する水平方向に摺動自在な複数の分割型3とで構
成され、上型2の下降による型締めで上型2と下型1と
の間にホイールのディスク部を成形するキャビティ4と
、分割型3の内方への摺動による型締めで上下の型1,
2と分割型3との間にホイールのリム部を成形するキャ
ビティ5とが形成される。分割型3には、リム部用のキ
ャビティ5に連通する湯口6が形成されており、下型1
の下側に設けた溶湯保持炉7内のアルミ溶湯を該保持炉
7内に加えるエア圧により給湯管8と下型1に形成した
湯道9とを介して湯口6に供給し、該湯口6から前記キ
ャビティ4,5に溶湯を注入して低圧鋳造を行うように
した。本実施例において、車体実装時に外側を向くホイ
ールの外側面は下型1で成形されるようになっており、
該下型1に水冷パイプ10を鋳込んだ冷し金11を埋設
して、該下型1を水冷パイプ10に流す冷却水により水
冷する。一方、ホイール内側面を成形する上型2には、
押し湯部12と、ホイール内側面のリブを成形する放射
状のリブ成形部13とが形成されており、更に該上型2
に、環状の空冷パイプ14を鋳込んだ冷し金15を埋設
すると共に、図2に明示する如く、各リブ成形部13に
沿う放射状の空気通路16を形成し、該空気通路16の
内端を冷し金15に形成した接続孔15aを介して空冷
パイプ14と、該空気通路16の外端を上型2に固着し
た環状の排気パイプ17とに連通させた。これによれば
、空冷パイプ14に流す冷却空気により冷し金15を介
して上型2が全体的に空冷されると共に、空冷パイプ1
4から排気パイプ17に空気通路16を介して流れる空
気によりリブ成形部13が効率良く空冷され、リブ部分
の溶湯の凝固時間が短縮される。然し、水冷よりも空冷
の方が冷却性能は劣り、そのためキャビティ4内の溶湯
は下型1側即ちホイール外側面側から凝固し、外側面に
ひけ等の欠陥は生じない。そして、ホイール内側面側が
凝固するときリブの部分も内側面の他部分に比し左程の
遅れを生ずることなく凝固し、その結果鋳造サイクルタ
イムが短縮される。
[Embodiment] Fig. 1 shows a casting mold for a vehicle wheel, and the mold includes a lower mold 1, an upper mold 2 that can be raised and lowered, and both molds 1,
A cavity 4 that molds the disc part of the wheel between the upper mold 2 and the lower mold 1 by clamping the upper mold 2 as the upper mold 2 descends. , the upper and lower molds 1 are clamped by sliding the split mold 3 inward,
A cavity 5 for molding the rim portion of the wheel is formed between the mold 2 and the split mold 3. The split mold 3 is formed with a sprue 6 that communicates with the cavity 5 for the rim portion, and the lower mold 1
The molten aluminum in the molten metal holding furnace 7 provided on the lower side is supplied to the sprue 6 via the hot water supply pipe 8 and the runner 9 formed in the lower mold 1 by air pressure applied to the holding furnace 7. From step 6, molten metal was injected into the cavities 4 and 5 to perform low-pressure casting. In this embodiment, the outer surface of the wheel that faces outward when mounted on the vehicle body is molded with the lower mold 1.
A chiller 11 in which a water-cooled pipe 10 is cast is embedded in the lower mold 1, and the lower mold 1 is water-cooled by cooling water flowing through the water-cooled pipe 10. On the other hand, the upper mold 2 that molds the inner surface of the wheel has
A riser part 12 and a radial rib forming part 13 for forming ribs on the inner surface of the wheel are formed, and the upper mold 2
A cooling metal 15 having an annular air cooling pipe 14 cast therein is embedded therein, and radial air passages 16 are formed along each rib molded part 13 as shown in FIG. The air cooling pipe 14 and the outer end of the air passage 16 were connected to an annular exhaust pipe 17 fixed to the upper mold 2 through a connecting hole 15a formed in the chiller 15. According to this, the upper mold 2 is entirely air-cooled by the cooling air flowing through the air-cooled pipe 14 via the chiller 15, and the air-cooled pipe 1
4 to the exhaust pipe 17 via the air passage 16, the rib forming part 13 is efficiently air-cooled, and the solidification time of the molten metal in the rib part is shortened. However, air cooling has a lower cooling performance than water cooling, and therefore the molten metal in the cavity 4 solidifies from the lower die 1 side, that is, from the outer side of the wheel, and defects such as sink marks do not occur on the outer side. When the inner surface of the wheel solidifies, the rib portion also solidifies without much delay compared to other portions of the inner surface, and as a result, the casting cycle time is shortened.

【0008】図中18は、ディスク部周辺に風穴等の開
口部を形成すべく下型1に突設した開口成形用の突起で
ある。
Reference numeral 18 in the figure indicates an opening forming protrusion provided on the lower mold 1 to form an opening such as an air hole around the disk portion.

【0009】[0009]

【発明の効果】以上の説明から明らかなように、本発明
によれば、ホイールの外側面側の金型と内側面側の金型
との冷却性能に差を付けて、溶湯を外側面側から凝固さ
せるという条件を満たしつつ内側面側のリブの凝固時間
を短縮でき、外側面にひけ等の欠陥が無い優良なホイー
ルを能率良く鋳造できる効果を有する。
Effects of the Invention As is clear from the above description, according to the present invention, the cooling performance of the mold on the outer side of the wheel and the mold on the inner side of the wheel are differentiated, so that the molten metal is cooled on the outside side. It has the effect of shortening the solidification time of the ribs on the inner side while satisfying the condition of solidifying from scratch, and efficiently casting high-quality wheels with no defects such as sink marks on the outer side.

【図面の簡単な説明】[Brief explanation of the drawing]

【図1】  本発明方法を適用するホイール鋳造用金型
の縦断面図
[Fig. 1] Longitudinal cross-sectional view of a wheel casting mold to which the method of the present invention is applied

【図2】  その要部の拡大断面図[Figure 2] Enlarged sectional view of the main parts

【符号の説明】[Explanation of symbols]

1  下型(外側面側金型)    2  上型(内側
面側金型)
1 Lower mold (outer side mold) 2 Upper mold (inner side mold)

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】  車両用ホイールを鋳造する金型の冷却
方法であって、車体実装時に外側を向くホイールの外側
面側の金型を水冷すると共に、ホイールの内側面側の金
型にホイール内側面に形成するリブの成形部に沿わせて
空冷通路を形成し、該成形部を強制空冷することを特徴
とする車両用ホイールの鋳造用金型の冷却方法。
Claim 1: A method for cooling a mold for casting a vehicle wheel, wherein the mold on the outer side of the wheel facing outward during mounting on a vehicle body is cooled with water, and the mold on the inner side of the wheel is cooled with water. 1. A method for cooling a mold for casting a vehicle wheel, comprising: forming an air cooling passage along a molded part of a rib formed on a side surface, and cooling the molded part with forced air.
JP3034308A 1991-02-27 1991-02-28 Cooling method of casting mold for vehicle wheel Expired - Fee Related JP2990445B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP3034308A JP2990445B2 (en) 1991-02-28 1991-02-28 Cooling method of casting mold for vehicle wheel
GB9201479A GB2253171B (en) 1991-02-27 1992-01-23 Method of casting vehicle wheel
US08/068,261 US5314001A (en) 1991-02-27 1993-05-28 Method of casting vehicle wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3034308A JP2990445B2 (en) 1991-02-28 1991-02-28 Cooling method of casting mold for vehicle wheel

Publications (2)

Publication Number Publication Date
JPH04274859A true JPH04274859A (en) 1992-09-30
JP2990445B2 JP2990445B2 (en) 1999-12-13

Family

ID=12410533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3034308A Expired - Fee Related JP2990445B2 (en) 1991-02-27 1991-02-28 Cooling method of casting mold for vehicle wheel

Country Status (1)

Country Link
JP (1) JP2990445B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010227980A (en) * 2009-03-27 2010-10-14 Honda Motor Co Ltd Cavity insert for casting
CN104107899A (en) * 2014-07-22 2014-10-22 秦皇岛兴龙轮毂有限公司 Cooling device for automobile hub die
CN105127400A (en) * 2015-09-11 2015-12-09 常州理工科技股份有限公司 Gear case die for locomotive driving device
CN106670433A (en) * 2016-12-28 2017-05-17 华南理工大学 Structure of water-cooling channel of casting mold
CN114029473A (en) * 2021-11-19 2022-02-11 浙江万丰摩轮有限公司 Low-pressure casting method of motorcycle aluminum alloy hub

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101523052B1 (en) * 2013-10-31 2015-05-22 오치영 Apparatus and method for manufaturing vehicle wheel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010227980A (en) * 2009-03-27 2010-10-14 Honda Motor Co Ltd Cavity insert for casting
CN104107899A (en) * 2014-07-22 2014-10-22 秦皇岛兴龙轮毂有限公司 Cooling device for automobile hub die
CN105127400A (en) * 2015-09-11 2015-12-09 常州理工科技股份有限公司 Gear case die for locomotive driving device
CN106670433A (en) * 2016-12-28 2017-05-17 华南理工大学 Structure of water-cooling channel of casting mold
CN114029473A (en) * 2021-11-19 2022-02-11 浙江万丰摩轮有限公司 Low-pressure casting method of motorcycle aluminum alloy hub

Also Published As

Publication number Publication date
JP2990445B2 (en) 1999-12-13

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