WO2001026849A1 - Procede et machine de coulee sous pression, et article coule sous pression - Google Patents
Procede et machine de coulee sous pression, et article coule sous pression Download PDFInfo
- Publication number
- WO2001026849A1 WO2001026849A1 PCT/JP1999/005687 JP9905687W WO0126849A1 WO 2001026849 A1 WO2001026849 A1 WO 2001026849A1 JP 9905687 W JP9905687 W JP 9905687W WO 0126849 A1 WO0126849 A1 WO 0126849A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- die plate
- metal mold
- nest
- movable die
- permeable metal
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/14—Machines with evacuated die cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
Definitions
- the present invention relates to a die-casting method, a die-cast product, and a die-casting machine.
- heat sink heat sink
- the heat sink is made of one of the base plates using a metal having high thermal conductivity such as aluminum. It has a structure in which a large number of thin radiating fins are provided on the surface at predetermined intervals.
- the heat radiation fins are provided as thin and as many as possible.
- heat sinks provided with a large number of small-diameter round or prismatic heat-dissipating pins instead of heat dissipating fins.
- heat sinks with these radiating fins or radiating bins have been mainly manufactured by die casting, aluminum extrusion (press molding) or cutting.
- die casting is often used in terms of manufacturing cost. .
- a nest having holes forming a plurality of pins parallel to the direction of extruding a workpiece is provided by a nesting surface between a fixed die plate and a movable plate.
- the tip of the hole is arranged so as to be open to the movable die plate side, and the tip of the hole in the nesting is brought into contact with the tip of the hole, and the air permeability is formed in the movable die plate.
- a metal mold is arranged, and a molten metal is injected into the cavity while applying a negative pressure to the air-permeable metal mold so as to inhale air from a contact surface of the nest with the end of the nest.
- the direction in which the workpiece is extruded is as described in claim 3.
- a nest having a concave portion forming a thin portion perpendicular to the concave portion and a convex portion for forming a hole in the thin portion in the concave portion is formed on the surface where the fixed die plate and the movable die plate abut.
- the concave portion is opened to the movable die plate side, and a gas permeable metal mold is disposed in the movable die plate so as to face the convex portion.
- the above object is achieved by a method for die-casting a thin-walled work, wherein a molten metal is injected into the cavity while a negative pressure is applied to a metal mold so as to suck air from the surface on the fixed die plate side. That is what you do.
- the fixed die plate and the movable die plate are positioned at a position adjacent to a cavity formed on a butt surface between the fixed die plate and the movable die plate.
- a concave portion is formed on at least one of the abutting surfaces, and a plate-shaped gas-permeable metal is filled in the concave portion, and a negative pressure is applied to the plate-shaped gas-permeable metal so that air is sucked from the butted surface.
- the above object is achieved by a die-casting method characterized by injecting a molten metal into the cavity.
- a die-cast product is provided in a cavity formed on an abutting surface between a fixed die plate and a movable die plate in a die-casting machine.
- a heat sink nest provided with slits forming a plurality of heat radiation fins is arranged with the slit tip opened to the movable die plate side, and the heat sink nest is brought into contact with the slit tip of the heat sink nest.
- a permeable metal mold is arranged in the movable die plate, and a negative pressure is applied to the permeable metal mold so that air is sucked from a contact surface with an end opening of the nest.
- the radiation fin may have a thickness of 0.3 to L.5 mm at a tip.
- a die-casting product in a cavity formed on an abutting surface of a fixed die plate and a movable die plate in a die-casting machine.
- a heat sink nest having holes for forming a plurality of heat radiating bins is disposed with the tip of the hole being opened to the movable die plate side, and is contacted with the tip of the hole of the heat sink nest.
- a permeable metal mold is arranged in the movable diplate, and a negative pressure is applied to the permeable metal mold so as to draw air from a contact surface with an end opening of the nest.
- a die-casting product wherein a die is formed in a cavity formed on an abutting surface of a fixed die plate and a movable die plate in a die-casting machine, and is orthogonal to the direction in which the workpiece is extruded.
- a concave portion forming a thin portion to be formed, and a nest provided with a convex portion for forming a hole of the thin portion in the concave portion, the concave portion being opened to the movable die plate side and arranged.
- An air-permeable metal mold is disposed in the movable die plate so as to face the convex portion, and a negative pressure is applied to the air-permeable metal mold so that air is suctioned from the surface on the fixed die plate side.
- the air-permeable metal mold may have a concave portion formed on the back side of a portion of the nest facing the slit, and may be thinner than other portions.
- the movable die plate 14 is opened, and then the formed heat sink 34 is extruded by the protruding plate 36 to be taken out as a product.
- the air-permeable metal mold 20 is used for plastic molding, and it is considered that the molten metal L ⁇ may be damaged by contact with the press-fitted molten metal. Since A is narrow and the permeable metal mold 20 contacts the molten metal only at the tip of the slit 18 A, when the press-fitted molten metal reaches the position where it comes into contact with the permeable metal mold 20. Since the temperature of the hot water has dropped significantly, the gas-permeable metal mold 20 does not melt or be damaged.
- the nesting 4 4 is provided with a hole 44 A forming a plurality of pins parallel to the direction of extruding the work, and a base plate recess 4 4 B continuous to the base end side of the hole 44 A,
- the tip of the hole 44A is placed in contact with the same air-permeable metal mold 20 provided on the movable die plate 14 side as described above.
- the diameter at the tip of the hole 44A is 1.0 to 2.0 mm.
- gas permeable metal mold 60 is provided at a position facing the recess 58 A in the nest 58, gas collects there, and a defect occurs in the thin plate member 48.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1999/005687 WO2001026849A1 (fr) | 1999-10-14 | 1999-10-14 | Procede et machine de coulee sous pression, et article coule sous pression |
EP99947908A EP1254731A1 (en) | 1999-10-14 | 1999-10-14 | Die casting method, die-cast article, and die casting machine |
CN99816946.3A CN1379702A (zh) | 1999-10-14 | 1999-10-14 | 压铸铸造方法、压铸铸造产品以及压铸铸造机 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1999/005687 WO2001026849A1 (fr) | 1999-10-14 | 1999-10-14 | Procede et machine de coulee sous pression, et article coule sous pression |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001026849A1 true WO2001026849A1 (fr) | 2001-04-19 |
Family
ID=14237003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/005687 WO2001026849A1 (fr) | 1999-10-14 | 1999-10-14 | Procede et machine de coulee sous pression, et article coule sous pression |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1254731A1 (ja) |
CN (1) | CN1379702A (ja) |
WO (1) | WO2001026849A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102218520A (zh) * | 2011-05-26 | 2011-10-19 | 哈尔滨工业大学 | 一种轻合金压铸充填锻造密实一体化成形装置及成形方法 |
CN103480821A (zh) * | 2013-09-06 | 2014-01-01 | 大连中盛金属制品有限公司 | 数控铣床电机专用散热器的铸造模具 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4292224B2 (ja) * | 2007-12-14 | 2009-07-08 | 株式会社東芝 | 金型、鋳造品の製造方法 |
JP2012152779A (ja) * | 2011-01-25 | 2012-08-16 | Ryobi Ltd | ダイカスト用金型及びダイカスト法 |
FR2959691B1 (fr) * | 2010-05-07 | 2013-05-10 | Snecma | Outillage d'injection d'une piece |
CN104552790B (zh) * | 2012-11-23 | 2017-04-19 | 威海威达精密铸造有限公司 | 一种农机铸件注射成型模具 |
DE102013214519A1 (de) * | 2013-07-25 | 2015-01-29 | Bayerische Motoren Werke Aktiengesellschaft | Druckgussform |
CN106424630B (zh) * | 2016-08-19 | 2019-01-18 | 浙江大学 | 复杂薄壁类铝合金件超声辅助半固态压铸成型装置及方法 |
CN108962851A (zh) * | 2018-08-29 | 2018-12-07 | 佛山市南海奔达模具有限公司 | 散热器以及其应用的壳单元、制造散热器的铸造模具 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5187126A (ja) * | 1975-01-28 | 1976-07-30 | Hiroshi Yoshida | Kanagatanyoruchuzohoho |
JPS6285917A (ja) * | 1985-10-11 | 1987-04-20 | Yukikazu Kasuga | 成形用砂型を用いた射出成形装置 |
JPH09162339A (ja) * | 1995-12-07 | 1997-06-20 | Janome Sewing Mach Co Ltd | Lsi用ヒートシンク及びその製造法 |
JPH10263779A (ja) * | 1997-03-24 | 1998-10-06 | Fujikura Ltd | ヒートシンクの製造方法 |
-
1999
- 1999-10-14 WO PCT/JP1999/005687 patent/WO2001026849A1/ja not_active Application Discontinuation
- 1999-10-14 EP EP99947908A patent/EP1254731A1/en not_active Withdrawn
- 1999-10-14 CN CN99816946.3A patent/CN1379702A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5187126A (ja) * | 1975-01-28 | 1976-07-30 | Hiroshi Yoshida | Kanagatanyoruchuzohoho |
JPS6285917A (ja) * | 1985-10-11 | 1987-04-20 | Yukikazu Kasuga | 成形用砂型を用いた射出成形装置 |
JPH09162339A (ja) * | 1995-12-07 | 1997-06-20 | Janome Sewing Mach Co Ltd | Lsi用ヒートシンク及びその製造法 |
JPH10263779A (ja) * | 1997-03-24 | 1998-10-06 | Fujikura Ltd | ヒートシンクの製造方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102218520A (zh) * | 2011-05-26 | 2011-10-19 | 哈尔滨工业大学 | 一种轻合金压铸充填锻造密实一体化成形装置及成形方法 |
CN103480821A (zh) * | 2013-09-06 | 2014-01-01 | 大连中盛金属制品有限公司 | 数控铣床电机专用散热器的铸造模具 |
CN103480821B (zh) * | 2013-09-06 | 2015-11-18 | 刘鲁斌 | 数控铣床电机专用散热器的铸造模具 |
Also Published As
Publication number | Publication date |
---|---|
EP1254731A1 (en) | 2002-11-06 |
CN1379702A (zh) | 2002-11-13 |
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