US3899021A - Machine for casting metals under gas pressure - Google Patents

Machine for casting metals under gas pressure Download PDF

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Publication number
US3899021A
US3899021A US285661A US28566172A US3899021A US 3899021 A US3899021 A US 3899021A US 285661 A US285661 A US 285661A US 28566172 A US28566172 A US 28566172A US 3899021 A US3899021 A US 3899021A
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US
United States
Prior art keywords
reservoir
intermediate plate
mould
plate
movable plate
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
US285661A
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English (en)
Inventor
Alexander Damyanov Alexandrov
Todor Kostov Trifonov
Stefan Ivanov Stefanov
Paskal Spasov Apostolov
Mincho Borislavov Deshev
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.)
NIPKI LEYARSKA TECHNIKA BG1971
NIPKI 'LEYARSKA TECHNIKA'BG1971090218483
Original Assignee
NIPKI LEYARSKA TECHNIKA BG1971
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 NIPKI LEYARSKA TECHNIKA BG1971 filed Critical NIPKI LEYARSKA TECHNIKA BG1971
Application granted granted Critical
Publication of US3899021A publication Critical patent/US3899021A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould

Definitions

  • ABSTRACT A machine for casting metals under gas'pressure of a four-column design is provided. It includes an intermediate plate which is disposed between a bottom plate and a movable plate with a metal duct fastened to it. This closes tightly the reservoir for the melt. Fastened by known means to this plate are the fixed part of the casting mould and the housing sealing it, by means of which and of a connecting element of known design and the attachment of the housing to the movable plate a rigid connection between the plate and the transfer cylinder, disposed on the top plate is achieved by means of the piston rod, connected rigidly to the movable plate.
  • This invention relates to amachine for casting metals and alloys under gas pressure, and particularly to a machine in which the displacement of the melt from the reservoir to the casting mould is performed-under the action of gas pressure.
  • the closing system of the machine is used for balancing the'force, resulting from the pressure in the reservoir for the melt.
  • Machines for casting under gas pressure are known, in which the reservoir for the melt is tightened independently by means of a separate cover and connecting elements, dimensioned with regard to the working pressure of the process gas.
  • Access to the the furnace (i.e. to the reservoir for the melt) for carrying out service and repair work is provided by removing the superstructures by tilting or lateral displacement by means of special hydraulic cylinders attached to the machine, or by moving it to the side by means of additional handling equipment.
  • a vertical machine of known four-column design comprising a bottom plate, a movable plate and a top plate, on which a transfer cylinder for moving the movable plate is attached, in which all plates are connected by four columns.
  • the addition is an intermediate plate, which is disposed between the bottom and the movable plate, which is used simutaneously as a tight cover for the reservoir for the melt, as well as for fastening the fixed part of the casting mould and the housing closing it tightly.
  • the sealing of the reservoir for the melt and the balancing of the gas pressure in it are effected by the force of the transfer cylinder or, in the case of great forces, by a special sealing mechanism of known design (e.g.
  • a wedge or a toggle-lever mechanism which is provided for sealing the casting mould.
  • the intermediate plate In order to provide a rigid connection between the bottom plate, the reservoir for the melt and the intermediate plate, which is needed for balancing the force when separating the mould and stripping the casting from its fixed bottom part, the intermediate plate is pressed against the reservoir for the melt by means of a wedge mechanism.
  • the intermediate plate and the movablerplate are coupled to the two halves of the casting mould; to the sealing housing, or are directly coupled. The wedge locking of the intermediate plate to the columns is released, and the intermediate plate,
  • FIG. 1 is a general view of the machine
  • FIG. 2 is a section along AA, according to FIG. 1, showing'the mechanism for locking the intermediate plate to the reservoir for the melt;
  • FIG. 3 is a section along BB, according to FIG. 1, showing the spring damper for lifting and displacing the reservoir for the melt.
  • the reservoir for the melt 3 is disposed between the bottom plate 1 and the intermediate plate 4, and its sealingin each working cycle is effected by the elastic seal 5 and the force of the gas pressure is balanced by the transfer cylinder 11, attached rigidly to the top plate 10 and connected to the movable plate 9 by means of its piston. This force is transmitted from the intermediate plate 4 to the casting mould 7 or the sealing housing 8 respectively, the movable plate 9, the cylinder 11, the fixed plate 10 and to the columns 2.
  • the intermediate plate 4 is pressed against the reservoir for the melt 3 by means of a wedge (locking) mechanism, disposed on the upper surface of the intermediate plate on two opposite columns 2.
  • the wedge mechanism consists of wedges l5, guided in parallel guideways l4, driven progressively by a system of regulable in length rods 16 by means of sleeves l7 and a handle 18, supported on one of the columns 2.
  • the lifting of the reservoir for the melt 3 until its bottom separates from the bottom plate 1 at a heigth a and its pulling out of the machine for carrying out service and repair work is effected by means of four spring dampers with castor wheels, attached to the outer wall of the reservoir for the melt. They consist of the castor wheel 19, supported on an axle on the guide 20, and a cylinder 21, attached rigidly to the reservoir for the melt 3. Disposed in the cylinder is the spring 22, regulated in dependence of the mass of the reservoir for the melt by means of a disk 23 and a screw 24.
  • the transfer cylinder 11 By means of the transfer cylinder 11 the movable plate 9 is displaced in its bottom position, in which both halves of the casting mould 7 or the housing 8 sealing it, respectively, come into contact.
  • the handle 18 of the locking mechanism is turned to the unlocked position and the wedges are pulled out of the grooves in the columns 2 by means of the bars 16.
  • Both halves of the casting mould 7 or the housing 8 sealing it are connected, or the movable plate 9 and the intermediate plate 4 are connected directly by means of a connecting element 6 of known design, and by the back stroke of the transfer cylinder 11 the movable plate 9, casting mould 7 and intermediate plate 4 with the metal duct 12 fastened to it, are lifted to their top position.
  • the lower end of the metal duct 12 stops at 40-50 mm above the jointing plane of the reservoir for the melt 3,
  • An apparatus for casting metal comprising:
  • intermediate plate means positioned above said reservoir means, said intermediate plate means including a metal duct means extending into said reservoir means;
  • mould means positioned above said intermediate plate means, wherein said metal in said reservoir means passes into said mould means through said metal duct means;
  • movable plate means positioned above said mould means in a mould sealing relationship with said intermediate plate means, and locking means comprising guides fixed to said intermediate plate means and wedge means mounted on said column means, said wedge means being forced between said intermediate plate means, said slot means and said guides;
  • transfer cylinder means for holding said reservoir means, intermediate plate means, mould means, and movable plate means in the sealing relationship against the pressure in said reservoir means such that the pressure forces said melt into said mould means;
  • An apparatus for casting metal comprising:
  • a. pressurized reservoir means for a melt said reservoir means including a reservoir and reservoir support means, said reservoir support means comprising a cylinder fixed to said reservoir, spring means within said cylinder, and castor means operably connected to said spring means to raise said reservoir;
  • intermediate plate means positioned above said reservoir means, said intermediate plate means including a metalduct means extending into said reservoir means;
  • mould means positionedabove said intermediate plate means wherein metal in said reservoir means passes into said mould means through said metal duct means;
  • transfer cylinder means for holding said reservoir means, intermediate plate means, mould means, and movable platemeans in the sealing relationship against the pressure in said reservoir means such that the pressure forces said melt into said mould means;
  • support means for supporting said intermediate plate means, said movable plate means, and said transfer cylinder means, said intermediate plate means and said movable plate means being movable on said support means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)
US285661A 1971-09-02 1972-09-01 Machine for casting metals under gas pressure Expired - Lifetime US3899021A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG1848371 1971-09-02

Publications (1)

Publication Number Publication Date
US3899021A true US3899021A (en) 1975-08-12

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ID=3898067

Family Applications (1)

Application Number Title Priority Date Filing Date
US285661A Expired - Lifetime US3899021A (en) 1971-09-02 1972-09-01 Machine for casting metals under gas pressure

Country Status (9)

Country Link
US (1) US3899021A (sv)
JP (1) JPS5528779B2 (sv)
AT (1) AT327419B (sv)
DD (1) DD104221A5 (sv)
FR (1) FR2151052B1 (sv)
GB (1) GB1371729A (sv)
IT (1) IT966029B (sv)
SE (1) SE392222B (sv)
SU (1) SU524500A3 (sv)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221196A1 (de) * 1985-10-08 1987-05-13 Institut Po Metalosnanie I Technologia Na Metalite Verfahren und Vorrichtung zum Giessen unter Druck
US5896912A (en) * 1995-04-27 1999-04-27 Hayes Wheels International, Inc. Method and apparatus for casting a vehicle wheel in a pressurized mold
CN102773414A (zh) * 2012-04-06 2012-11-14 北京时代锐智科贸有限公司 一种无冒口铸造机
CN105268950A (zh) * 2015-09-18 2016-01-27 秦皇岛信越智能装备有限公司 一种保温炉顶升状态锁紧装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63112214U (sv) * 1987-01-14 1988-07-19
JPH0252160A (ja) * 1988-08-10 1990-02-21 Sintokogio Ltd 低圧鋳造用保持炉運搬台車
CN109865818B (zh) * 2018-03-01 2023-11-03 诸城航大新材料技术有限公司 一种差压铸造机的锁紧装置
CN110026539B (zh) * 2019-05-20 2023-10-31 北京航大新材科技有限公司 一种能快速锁模的铸造机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1797041A (en) * 1929-07-17 1931-03-17 Carl E Becker Apparatus for casting metal
US1851935A (en) * 1928-10-08 1932-03-29 Hydraulic Pressed Bearing Comp Means for die casting
US1999961A (en) * 1932-08-03 1935-04-30 John R Daesen Method and apparatus for die casting
US2105586A (en) * 1936-07-13 1938-01-18 John R Daesen Die casting apparatus
US3548922A (en) * 1967-03-16 1970-12-22 Jon Erik Marius Carisen Metal-casting apparatus
US3643732A (en) * 1968-12-21 1972-02-22 Jon E M Carlsen Metal casting apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1851935A (en) * 1928-10-08 1932-03-29 Hydraulic Pressed Bearing Comp Means for die casting
US1797041A (en) * 1929-07-17 1931-03-17 Carl E Becker Apparatus for casting metal
US1999961A (en) * 1932-08-03 1935-04-30 John R Daesen Method and apparatus for die casting
US2105586A (en) * 1936-07-13 1938-01-18 John R Daesen Die casting apparatus
US3548922A (en) * 1967-03-16 1970-12-22 Jon Erik Marius Carisen Metal-casting apparatus
US3643732A (en) * 1968-12-21 1972-02-22 Jon E M Carlsen Metal casting apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0221196A1 (de) * 1985-10-08 1987-05-13 Institut Po Metalosnanie I Technologia Na Metalite Verfahren und Vorrichtung zum Giessen unter Druck
US4671342A (en) * 1985-10-08 1987-06-09 Institute Po Metaloznanie I Technologia Nametalite Method of and apparatus for casting metals under pressure
US5896912A (en) * 1995-04-27 1999-04-27 Hayes Wheels International, Inc. Method and apparatus for casting a vehicle wheel in a pressurized mold
CN102773414A (zh) * 2012-04-06 2012-11-14 北京时代锐智科贸有限公司 一种无冒口铸造机
CN102773414B (zh) * 2012-04-06 2014-08-27 北京时代锐智科贸有限公司 一种无冒口铸造机
CN105268950A (zh) * 2015-09-18 2016-01-27 秦皇岛信越智能装备有限公司 一种保温炉顶升状态锁紧装置

Also Published As

Publication number Publication date
SU524500A3 (ru) 1976-08-05
FR2151052B1 (sv) 1977-07-29
SE392222B (sv) 1977-03-21
DE2242764A1 (de) 1973-03-22
JPS4839323A (sv) 1973-06-09
JPS5528779B2 (sv) 1980-07-30
IT966029B (it) 1974-02-11
DD104221A5 (sv) 1974-03-05
FR2151052A1 (sv) 1973-04-13
GB1371729A (en) 1974-10-23
ATA750572A (de) 1975-04-15
DE2242764B2 (de) 1976-02-26
AT327419B (de) 1976-01-26

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