US3092881A - Clamping arrangement for pressure casting apparatus - Google Patents

Clamping arrangement for pressure casting apparatus Download PDF

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Publication number
US3092881A
US3092881A US45106A US4510660A US3092881A US 3092881 A US3092881 A US 3092881A US 45106 A US45106 A US 45106A US 4510660 A US4510660 A US 4510660A US 3092881 A US3092881 A US 3092881A
Authority
US
United States
Prior art keywords
tank
cover
pressure
piston
clamping arms
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
US45106A
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English (en)
Inventor
Sr George R Vorel
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.)
Amsted Industries Inc
Original Assignee
Amsted Industries Inc
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 Amsted Industries Inc filed Critical Amsted Industries Inc
Application granted granted Critical
Publication of US3092881A publication Critical patent/US3092881A/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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S164/00—Metal founding
    • Y10S164/14—Wheel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/0911—Hooked end
    • Y10T292/0945—Operating means
    • Y10T292/0947—Cam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/096—Sliding
    • Y10T292/1014—Operating means
    • Y10T292/1021—Motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/68—Keepers
    • Y10T292/696—With movable dog, catch or striker
    • Y10T292/699—Motor controlled

Definitions

  • the invention comprehends an improved arrangement for detachably clamping a cover on a pressure casting tank.
  • connection between the tank and cover not only must the connection between the tank and cover be air-tight, but it must be a strong connection able to withstand the intense pressures to which it is subjected.
  • connection, or clamping arrangement, between the tank and cover must be one which can be rapidly coupled or uncoupled so that the change or replacement of covers can be accomplished in a minimum amount of time to conserve the heat in the mass of molten metal to be cast.
  • FIGURE 1 is a fragmentary vertical sectional view of a pressure tank arrangement embodying features of the invention
  • FIGURE 2 is a top plan view of a portion of the structure illustrated in FIGURE 1;
  • FIGURE 3 is a plan View of a portion of the structure taken on line 33 of FIGURE 1, and
  • FIGURE 4 is a vertical sectional view taken on line 4--4 of FIGURE 1.
  • FIG. 10 a clamping arrangement embodying features of the invention is shown as applied to a pressure tank assembly which includes a preferably cylindrical pressure tank, indicated generally at 10, and a cover for the tank, indicated generally at 12.
  • the tank has an internal pressure chamber 14 adapted to receive a ladle L of molten metal M.
  • an annular, preferably rubber, seal 16 between the rim of the tank and the cover. 'The actual connection between the cover and the tank is accomplished by a plurality of clamping devices 18 spaced from each other circumferentially of the tank and cover.
  • the tank is preferably cylindrical in shape and includes a base plate 20 and an annular side wall 22 upstanding therefrom.
  • the inner sides of the base plate and side wall may be provided with a refractory liner 24 which serves as an insulating barrier to retain the heat within 3,Z,88l Patented June 11, 1963 the chamber 14.
  • the side wall 22 may be provided with a plurality of inwardly extending integral ladle guides 26, each of which includes an inwardly and downwardly sloping wall 28 and a vertical radically extending support web 2.9 connecting the inclined wall to the tank side wall.
  • the cover 12 as best seen in FIGURE 1, comprises a preferably circular metallic plate 36 having a central aperture 32 extending vertically therethrough for receipt of a pouring tube T which affords a means of transferring the molten metal M from the ladle to a mold D supported on the upper end of the tube above the cover 12.
  • the underside of the cover plate 39' may also be provided with an insulating layer 34.
  • the cover and tank may be provided with a pair of mating guide pins and holes (not shown) to help maintain proper alignment between cover and tank.
  • the cover may also be provided at its outer periphery with an annular outwardly and downwardly sloping shelf or lip 44? secured to the cover in any manner such as by welds 42 and reinforced by a plurality of vertical radial webs 4-4.
  • the underside of the cover plate 30 may be provided with a plurality, preferably 8 pairs of integral clamp arm lugs 46 which are spaced circumferentially from each other around the outer periphery of the cover and which project downwardly therefrom on the outer side of the tank wall 22.
  • a generally vertically disposed clamp arm 50 Pivotally connected to each of the clamp ar-m lugs 46 by a pin 53 is a generally vertically disposed clamp arm 50, which carries adjacent its lower end a pair of rollers 52 pivotally connected to the arm by pin 54.
  • the lower extremity of the arm is provided with an integral outwardly projecting foot 5% which has a table or shelf '58 extending transversely of the arm and presenting a generally horizontal upwardly facing surface 59.
  • the function of the clamp arm will be described later in the specification.
  • the upper rim of the tank may be provided with an annular integral water jacket 64) which comprises horizontal upper and lower plates 62 and 64, respectively, which project outwardly from the tank side wall 22 and which are interconnected at their outer extremities by an annular vertical outer plate 66 which, together with the tank side wall and the top and bottom plates, defines an annular cavity 68 through which may be continuously circulated a supply of cold water.
  • the connections of the water source to the water jacket 60 are not shown as they do not comprise an essential part of this invention and the connections may be made in any convenient manner.
  • the upper surface of the jacket top plate 62 may be provided with an annular groove 69 for receiving a portion of the rubber seal 16, to prevent the lateral displacement of the seal.
  • the wall 22 of the tank may be provided on its outer side with an annular shelf 8% which includes, at spaced intervals, a plurality of roller guides 82, each of which includes a downwardly and outwardly sloping wall 84 and an integral wall 85 which extends vertically downwardly from the outer extremity of wall 34.
  • the shelf may be supported by a plurality of vertical webs 88 disposed under the wall at each of the roller guides 82.
  • each clamping mechanism 18 which is carried by the tank includes a support and/or inclosure structure indicated generally at 90.
  • the structure 99 includes a base plate or 1001" which has one side rigidly secured in manner as by weld 94 to the side wall 22 of the a point located just below the roller guide web 88 of the related clampirn mechanism.
  • the plate 92 is disposed at a small angle relative to the horizontal so that the plate slopes downwardly and outwardly from its point of contact with the side wall of the tank.
  • Upst-anding from opposite sides of the plate 92 are a pair of generally vertically extending side walls 96 which are interconnected at their outer extremity by a transversely extending generally vertical rear wall 98 which is also upstanding from the base plate 92.
  • the structure 9% may include a reinforcing web portion 11% generally T-shaped in section comprising a pair of generally vertically extending walls or webs 112 and 114 upstanding from the floor 92 behind the rear wall 98 with the web 112 extending parallel to rear wall 98 and the web 114 interconnecting the rear wall 98 and the web 112.
  • the upper and lower shelves 103 and 1&2 may be provided with openings 1'16 and 118, respectively, extending vertically therethrough and the rear wall 98 may be provided at its upper extremity with an opening 119 extending therethrough.
  • the purpose of these openings will be described hereinafter together with the jack mechanism 120 which is received within the pocket 108 formed by the shelves and rear wall of the support structure 99.
  • the jack mechanism includes a housing or cylinder 120 having extending therefrom a fluid actuated piston or ram 124.
  • the housing may be secured to the structure 90 by means of a bolt 126 disposed to extend through the hole 116 in the upper shelf 1&0 and be threadably received within the housing 129.
  • the lower portion of the housing 1.2% is disposed to extend through or reside in the opening or slot 118 in the lower shelf and may be retained in position by means of a pair of retainer plates 12% which are secured to the lower shelf 162 by means of a plurality of nut and bolt assemblies 129.
  • a roof assembly 130 which comprises an arcuately shaped generally flat outwardly and downwardly sloping horizontal wall 132 having extending downwardly and slightly inwardly from its inner periphery a generally vertical wall 134'.
  • the wall 132 may be provided with a pair of depending vertical flanges 136 which are spaced from each other a distance slightly greater than the distance between the side walls 96 of the support structure 9d so that when the cover assembly is placed over the jack mechanism, the flanges 136 will be disposed adjacent the outer sides of the respective side walls 96.
  • the vertical wall 134 is considerably more narrow than the horizontal wall 132 and is adapted to fit between a pair of spaced bars 138 which are secured to the upper and lower shelves of the support frame.
  • the horizontal wall of the cover assembly protects the exposed upper portion of the clamp mechanism and support structure and the vertical wall 134 serves as a cover for the front portion of the pocket 108 which receives the jack mechanism.
  • Pressure fluid may be delivered from a source (not shown) to the jack mechanisms of the respective clamping devices by a main pressure fluid line or manifold ldtl having a plurality of separate lines 1M2 leading to each of the jack mechanisms.
  • Each line 142 is disposed to extend through the opening 119 in the rear wall 98 of the support structure 9% and has a connection at 144 with the housing of the jack mechanism.
  • a pressure casting arrangement the combination of: a pressure tank open at the top, a detachable cover for closing the open top of said tank, a plurality of downwardly depending clamping arms secured to said cover and spaced generally circurnferentially thereabout, each of said clamping arms comprising an elongated body portion, a generally upwardly directed abutment surface formed on said body portion near the lower end thereof, roller means pivotally secured to said body portion near said lower end, a plurality of downwardly directed mounting brackets continuously secured to said cover, a pivot member pivotally securing each of said clamping arms near their respective upper ends to said mounting brackets, a plurality of laterally extending support assemblies secured to said tank in a manner radiating generally outward-1y therefrom, a pressure responsive piston and cylinder assembly received and retained by each of said support assemblies, a source of pressure fluid connected to each of said pressure responsive piston and cylinder assemblies, said pressure responsive assemblies being received by said support assemblies in a manner enabling downward movement of said piston in a direction slightly inclined
  • a pressure tank open at the top, a detachable cover for closing the open top of said tank, a plurality of downwardly depending clam-ping arms secured to said cover and spaced generally circumferentially thereabout, each of said clamping arm-s comprising an elongated body portion, a generally upwardly directed abutment surface formed on said body portion near the lower end thereof, roller means pivotally secured to said body portion near said lower end, a plurality of downwardly directed mounting brackets secured to said cover, a pivot member pivotally securing each of said clamping arms near their respective upper ends to said mounting brackets, a plurality of laterally extending support assemblies secured to said tank in a manner radiating generally outwardly therefrom, a pressure responsive piston and cylinder asassemblies, a source of pressure fluid connected to each of said pressure responsive piston and cylinder assemblies, said pressure responsive assemblies being received by said support assemblies in a manner enabling downward movement of said piston whenever actuated by said source of pressure fluid,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Jigs For Machine Tools (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
US45106A 1963-06-07 1960-07-25 Clamping arrangement for pressure casting apparatus Expired - Lifetime US3092881A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH713663A CH409253A (de) 1963-06-07 1963-06-07 Druckgiessanlage

Publications (1)

Publication Number Publication Date
US3092881A true US3092881A (en) 1963-06-11

Family

ID=4320518

Family Applications (1)

Application Number Title Priority Date Filing Date
US45106A Expired - Lifetime US3092881A (en) 1963-06-07 1960-07-25 Clamping arrangement for pressure casting apparatus

Country Status (6)

Country Link
US (1) US3092881A (sv)
BE (1) BE633140A (sv)
CH (1) CH409253A (sv)
DE (1) DE1273140B (sv)
FR (1) FR1361636A (sv)
GB (1) GB966005A (sv)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162909A (en) * 1961-10-25 1964-12-29 Griffin Wheel Co Apparatus for pressure pouring articles
US3321116A (en) * 1964-04-28 1967-05-23 Lebanon Steel Foundry Dispensing ladle with removable frangible drain trough
US4950018A (en) * 1989-12-26 1990-08-21 Jeffords Austin K Latch for combination vent and escape hatch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US632251A (en) * 1899-05-31 1899-09-05 Harry C Cooper Clamp for molders' flasks.
US2006240A (en) * 1931-04-11 1935-06-25 James F Hines Mold jacket
US2734824A (en) * 1954-10-18 1956-02-14 Pressure vessels
US2912728A (en) * 1956-02-14 1959-11-17 Griffin Wheel Co Casting method and apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847739A (en) * 1951-07-12 1958-08-19 Griffin Wheel Co Casting apparatus
US2852822A (en) * 1955-08-12 1958-09-23 Griffin Wheel Co Vacuum seal for pressure pouring apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US632251A (en) * 1899-05-31 1899-09-05 Harry C Cooper Clamp for molders' flasks.
US2006240A (en) * 1931-04-11 1935-06-25 James F Hines Mold jacket
US2734824A (en) * 1954-10-18 1956-02-14 Pressure vessels
US2912728A (en) * 1956-02-14 1959-11-17 Griffin Wheel Co Casting method and apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162909A (en) * 1961-10-25 1964-12-29 Griffin Wheel Co Apparatus for pressure pouring articles
US3321116A (en) * 1964-04-28 1967-05-23 Lebanon Steel Foundry Dispensing ladle with removable frangible drain trough
US4950018A (en) * 1989-12-26 1990-08-21 Jeffords Austin K Latch for combination vent and escape hatch

Also Published As

Publication number Publication date
FR1361636A (fr) 1964-05-22
CH409253A (de) 1966-03-15
DE1273140B (de) 1968-07-18
BE633140A (sv)
GB966005A (en) 1964-08-06

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