US3763925A - Article casting apparatus - Google Patents
Article casting apparatus Download PDFInfo
- Publication number
- US3763925A US3763925A US00066518A US3763925DA US3763925A US 3763925 A US3763925 A US 3763925A US 00066518 A US00066518 A US 00066518A US 3763925D A US3763925D A US 3763925DA US 3763925 A US3763925 A US 3763925A
- Authority
- US
- United States
- Prior art keywords
- mold
- gate
- housing
- assembly
- arm
- 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
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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
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
-
- 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 Casting apparatus which provides an improved gate assembly including a novel mechanical device for positively holding the gate in its operative position.
- the present invention provides a gate housing having an opening to receive a refractory inner sleeve, means for moving the housing toward and away from the mold with which it is associated, said means comprising a means adapted to exert on the gate assembly a sealable force sufficient to obtain the proper sealing condition between the gate assembly and mold, but characterized in that it is not dependent on auxiliary power means to maintain the sealed condition.
- the improved gate assembly includes a housing having a passageway therethrough, a first means for urging said housing into the gate operative position, a second means for removing the influence of said first means and allowing the housing to be brought to the gate inoperative position.
- the present invention relates to an article casting machine in which, while it may be employed in a number of different types of casting machine, for the purpose of illustration only, it is being described with reference to a bottom pressure pouring casting machine, such as of the type illustrated in U. S. Pat. No. 3,015,863 issued in the name of C. F. Strom et al. on Jan. 9, 1962. It is customary in such casting machines to provide a movable gate that is arranged between the pressure vessel and the mold assembly and through which the molten metal from the vessel passes into the mold assembly. It is important in such a construction that the gate be positively maintained in a sealed relationship with respect to the bottom of the mold assembly so as to prevent any escape of the metal from the mold assembly.
- this sealing condition was obtained by urging the gate towards the mold assembly under the influence of a fluid pressure means, such as an hydraulic pressure piston cylinder assembly.
- a fluid pressure means such as an hydraulic pressure piston cylinder assembly.
- FIG. I is a plan view of a pressure casting arrangement illustrating the portion thereof which involves the present invention
- FIG. 2 is an elevational view of the apparatus shown in FIG. 1,
- FIG. 3 is a sectional view taken on lines 3-3 of FIG. I.
- FIG. 4 is a sectional view taken on lines 4--4 of FIG.
- FIGS. 1 and 2 there is illustrated the novel gate assembly and the novel carriage for removing the cast articles.
- a pressure vessel which deliv' ers molten metal to the gate assembly, in which the gate assembly directs the molten metal to a mold cavity having a configuration conforming to the contour of the article to be cast.
- the cast article for the purpose of illustration, is shown to be a slab which is formed by a cavity defined by side, end, top and bottom graphite mold blocks. One of these blocks, that being the bottom block, is shown in FIG. 1.
- FIGS. 1 and 2 illustrate the slab whereas FIG. 3 illustrates the two end blocks and the cavity defining the thickness of the slab.
- the gate is comprised essentially of an outer housing or casing 10 that receives in an opening 11 two refractory liners.
- the first. liner 12 is arranged in the lower portion of the casing, whereas the second liner 13, being conical in shape, is located in the upper portion of the casing. Both liners are held by a cylindrical retainer 14 which is secured to the casing.
- the casing is adapted to move vertically in a U-shaped frame so as to bring the entire gate assembly to a position in forcible contact with the bottom of the mold from a position remote therefrom.
- the gate assembly be forcibly maintained against the bottom of the mold during the pouring procedure and that this means be not subject to inadvertent failure of the source of power. Consequently, there is provided, as shown in FIG. 3, a pair of arms 18 which engages the casing 10 at two opposed points, the arms 18 being received in shafts 22, the shafts being rotated by second arms 23, the second arms being connected to spring assemblies 24.
- the spring assemblies are designed to provide a positive force sufficient to urge the casing upward and establish the proper sealing condition with the mold assembly.
- a housing having a passageway through which molten metal passes into the mold
- second means comprises a piston cylinder assembly adapted to overcome the energy of the spring and cause the gate to move away from said mold.
- said pivotally mounted arm is arranged substantially diametrically opposite to a second similar arm with respect to said housing, each arm being secured to a said rotatable shaft and each arm having a said spring and a said piston cylinder assembly.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US55460366A | 1966-06-01 | 1966-06-01 | |
US6651870A | 1970-08-24 | 1970-08-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3763925A true US3763925A (en) | 1973-10-09 |
Family
ID=26746826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00066518A Expired - Lifetime US3763925A (en) | 1966-06-01 | 1970-08-24 | Article casting apparatus |
Country Status (1)
Country | Link |
---|---|
US (1) | US3763925A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3972369A (en) * | 1974-11-04 | 1976-08-03 | Groupement pour les Activities Atomiques et Avencees "GAAA" | Rapid low-pressure casting installation |
US4592405A (en) * | 1983-03-24 | 1986-06-03 | Ae Plc | Squeeze casting of articles |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE486947C (en) * | 1925-06-23 | 1929-12-16 | Eirich Geb | Lid closure for the emptying opening of mixers, agitators, Kollergengen u. Like. For masses of all kinds, namely ceramic masses |
US2445501A (en) * | 1945-03-28 | 1948-07-20 | Edward J Vagim | Hopper assembly with solenoid operated gate |
US2963308A (en) * | 1955-05-16 | 1960-12-06 | Baker Perkins Inc | Sanitary glands |
US3044764A (en) * | 1960-04-15 | 1962-07-17 | Renzo V Bonner | Fluid pressure actuator |
US3090090A (en) * | 1960-08-24 | 1963-05-21 | Amsted Ind Inc | Insert core for slide shut-off device |
US3435884A (en) * | 1966-06-01 | 1969-04-01 | United Eng Foundry Co | Gate positioning device for article-casting machine |
US3651860A (en) * | 1966-07-18 | 1972-03-28 | Amsted Ind Inc | Apparatus for casting metal articles |
-
1970
- 1970-08-24 US US00066518A patent/US3763925A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE486947C (en) * | 1925-06-23 | 1929-12-16 | Eirich Geb | Lid closure for the emptying opening of mixers, agitators, Kollergengen u. Like. For masses of all kinds, namely ceramic masses |
US2445501A (en) * | 1945-03-28 | 1948-07-20 | Edward J Vagim | Hopper assembly with solenoid operated gate |
US2963308A (en) * | 1955-05-16 | 1960-12-06 | Baker Perkins Inc | Sanitary glands |
US3044764A (en) * | 1960-04-15 | 1962-07-17 | Renzo V Bonner | Fluid pressure actuator |
US3090090A (en) * | 1960-08-24 | 1963-05-21 | Amsted Ind Inc | Insert core for slide shut-off device |
US3435884A (en) * | 1966-06-01 | 1969-04-01 | United Eng Foundry Co | Gate positioning device for article-casting machine |
US3651860A (en) * | 1966-07-18 | 1972-03-28 | Amsted Ind Inc | Apparatus for casting metal articles |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3972369A (en) * | 1974-11-04 | 1976-08-03 | Groupement pour les Activities Atomiques et Avencees "GAAA" | Rapid low-pressure casting installation |
US4592405A (en) * | 1983-03-24 | 1986-06-03 | Ae Plc | Squeeze casting of articles |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PITTSBURGH NATIONAL BANK Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP.OF OH;REEL/FRAME:004458/0765 Effective date: 19850610 |
|
AS | Assignment |
Owner name: PITTSBURGH NATIONAL BANK,PENNSYLVANIA Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307 Effective date: 19860630 Owner name: PITTSBURGH NATIONAL BANK Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307 Effective date: 19860630 |
|
AS | Assignment |
Owner name: WEAN UNITED, INC. Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:PITTSBURGH NATIONAL BANK;REEL/FRAME:004925/0218 Effective date: 19880509 |
|
AS | Assignment |
Owner name: WEAN LIMITED, INC., A CORP. OF OH Free format text: ASSIGNOR HEREBY CONFIRMS THE INTIRE INTEREST IN SAID PATENTS TO ASSIGNEE;ASSIGNOR:WEAN INCORPORATED, A PA. CORP.;REEL/FRAME:004920/0124 Effective date: 19880610 |
|
AS | Assignment |
Owner name: UNITED FOUNDRIES, INC. Free format text: CHANGE OF NAME;ASSIGNOR:UNITED ENGINEERING FOUNDRY PRODUCTS, INC.;REEL/FRAME:005285/0006 Effective date: 19900425 |