US3318365A - Apparatus for producing half molds by pressing - Google Patents

Apparatus for producing half molds by pressing Download PDF

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Publication number
US3318365A
US3318365A US423480A US42348065A US3318365A US 3318365 A US3318365 A US 3318365A US 423480 A US423480 A US 423480A US 42348065 A US42348065 A US 42348065A US 3318365 A US3318365 A US 3318365A
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US
United States
Prior art keywords
flask
frame
press
punches
pressing
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
US423480A
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English (en)
Inventor
Isaev Ivan Sergeevich
Vedenov Afanasy Grigorjevich
Karabchevsky Ale Alexandrovich
Kulikov Alexandr Grigorjevich
Rats Vasily Georgievich
Shutkevich Alexand Jakovlevich
Jafet Grigory Mikhailovich
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.)
KIROVSKY MASCHINOSTROITELNYI METALLURGICHESKY ZAVOD
Original Assignee
KIROVSKY MASCHINOSTROITELNYI METALLURGICHESKY ZAVOD
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
Priority to GB1084310D priority Critical patent/GB1084310A/en
Priority to FR996786A priority patent/FR1416194A/fr
Application filed by KIROVSKY MASCHINOSTROITELNYI METALLURGICHESKY ZAVOD filed Critical KIROVSKY MASCHINOSTROITELNYI METALLURGICHESKY ZAVOD
Priority to US423480A priority patent/US3318365A/en
Application granted granted Critical
Publication of US3318365A publication Critical patent/US3318365A/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
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/10—Compacting by jarring devices only
    • B22C15/12—Compacting by jarring devices only involving mechanical gearings

Definitions

  • the invention relates to foundry equipment and more particularly to apparatus for producing foundry shell half molds by a pressing method used for obtaining shaped castings.
  • An object of this invention is to provide foundry apparatus which will eleminate the above disadvantages.
  • the principal object of the invention is to provide an apparatus which will allow shell half molds for castings of various sizes and shapes to be pressed in flasks of different heights without readjustment of the apparatus as well as without the use of manual labor.
  • the apparatus is provided with a filler frame mounted on the press column together with a horizontally-travelling box, the front wall of which is capable of upward and downward movement, and a removal frame which are arranged above and beneath the filler frame respectively and used for batching, uniform distributing of the molding sand in the flask and removing excess sand from the top edge of the flask after pressing.
  • the apparatus is equipped with conveyors for transferring the flasks during the manufacturing operations, a mechanism for placing an empty flask on a bottom board, a mold tilter and a mechanism for withdrawing patterns from the shell half molds.
  • FIGS. 1a and 1b are a top view of the present apparatus
  • FIG. 2 is a side view of said apparatus
  • FIG. 3 is a diagrammatic view of the means for operating the wheeled carriages or bogies.
  • a flask with a pattern or bottom board is adapted to be delivered to a press 1 (FIG. 1) of a hydraulic four-c01- umn type, and bed 2 of which has a recess for a mechanism for transferring the flasks.
  • a top cross-head 3 and a movable cross-head 4 of the press are formed with square openings to admit molding sand to be charged therein with the aid of a conveyor.
  • the movable crosshead 4 is equipped with two channels 5 which are fastened perpendicularly to the direction of travel of the flask.
  • Wheeled carriages 6 are capable of travel along the chan-. nels 5 of the movable cross-head 4 and each carriage is constituted by a welded metal box-shaped frame.
  • each carriage Operably related to each carriage is a drive assemblage including an electric motor 6a, an electromagnetic shoe brake 6b, worm reducing gear means 60, output shaft 6d and wheels 6e at the ends of the shaft.
  • the electric motor is supplied with current via a flexible conduit mounted on a terminal box provided for a hoisting mechanism 9 for the wheeled carriages.
  • Certain of the wheeled carriages 6 are provided with a shaped punch 7 while others with a flat punch 8 and the respective punches are attached to the carriages by means of blocks having T-shaped slots.
  • each wheeled carriage 6 permits the carriage to be moved horizontally along the channels 5 of the cross-head 4.
  • a support structure 10 is installed adjacent the press, and such structure includes a gantry the top of which accommodates a drive defined by an electric motor, an electromagnet shoe brake and a worm reducer.
  • the structure 10 supports a plurality of carriages 6 (two in the present case) arranged one above the other, on a pair of channels 11.
  • the structure 10 reaches the specified position, one or another pair of the channels 11 registers with the channels 5 on the movable cross-head 4 and, thus, the carriage can run between the gantry and the press, in both directions (the blocking system being designed so as to allow such running only with the crosshead 4 in its uppermost position).
  • a mechanism 12 for batching, levelling and removing sand Arranged on the opposite side of the press 1, with respect to the hoisting mechanism 9 for the carriages 6 is a mechanism 12 for batching, levelling and removing sand.
  • a metal sheet 13 At the level of the top plane of the flasks travelling under the press 1 with a small clearance such as 25 mm. therefrom, a metal sheet 13 is fastened and such sheet is somewhat larger than the inside dimensions of the flask.
  • Normal to the direction of the travel of the flask are two rectangular guides 14 along which a removal frame 15 slides.
  • the guides 14 are secured on the columns of the press 1 and along the sheet 13 on its sides.
  • the lower plane of the frame 15 passes over the flask and the sheet 13 with a clearance of 2 to 4 mm. and is transferred by a hydraulic cylinder and piston unit 1-6.
  • the front wall 21 extends somewhat higher than the side walls and is movable upwardly and downwardly by mechanical means.
  • molding sand therein is carried away with the front wall 21 onto the sheet 13 whereas a layer ensuring a uniform ramming of the shell half mold during pressing is maintained over the flask.
  • the apparatus is provided with conveyers 22, 23, 24 which serve to transfer the flasks during the manufacturing operation, a flask elevator 25 to lift flasks whose height does not exceed 600 mm, a manipulator means 26 for placing the flasks on the pattern ofbottom board, a pusher unit 27, a mechanism '28 for feeding the facing sand, a tilter for the shell half molds and patterns 29 and 30, a drawing mechanism 31 and roller conveyers 32 and 33 for patterns.
  • the conveyer 22 delivers empty flasks onto the elevator 25,'and the manipulator means 26 transfers a flask from the elevator 25 in its extreme left'position and places the flask on thebottom board delivered by mechanism '34.
  • the set. (a pattern or bottom board and a flask) is transferred by the pusher unit 27 onto the conveyor 23 where the feeding mechanism 28 delivers the sand into the flask afterwhich the set is brought under the press 1.
  • the wheeled carriages 6 are on the hoist mechanism 9.
  • the removal frame 15 and the box 20 are also brought into operative relation thereto, and a mechanism 35 for feeding molding sand delivers such sand through the holes in the cross-heads thus filling the flask, the filler frame 18 and the box 20.
  • the box 20 is V removed from under the press 1 thereby levelling the sand and making room for the carriage 6 with a shaped punch 7 which, after pressing the sand, return onto the hoist mechanism 9 for hoisting the carriages.
  • the second pressing operation is performed with a flat punch 8 after additional sand is charged.
  • the removal frame 15 returns -to its initial position and its knife removes excess sand from the upper edge of the flask.
  • the set, formed and delivered from under the press is covered with a bottom plate with the aid of a mechanism 36 for placing the bottom plates which comprises a pusher 37, a frame 38 for placing the set of bottom plates, a hoist table 39 and a carriage for transferring the bottom plates.
  • the set, formed and covered with a bottom plate, is tilted in the mold tilter 29 which consists of a drum having a horizontal axis resting free on four rolls. Inside of the drum at the top and bottom thereof, two movable sections of roll tables are assembled.
  • One of the tables serves as an extension for the roll table of the operating flight of conveyor 23 when the drum is in one or another position and the sections of the roll tables can move vertically for fixing the flask together with the pattern and bottom board during the tilting operation.
  • the roll tables may be driven by four hydro-cylinder piston unit-s.
  • the installation is controlled by the operators from two panel boards.
  • An apparatus for producing foundry half molds by flask pressing comprising a base, columns carried by said base, a press including a movable molding crossehead mounted on said columns above the flask and provided with a through opening and horizontal guideways, means for feeding a molding mixture into a flask providedwith a lower board through said opening, further columns located immediately adjacent the press, a frame mounted on said further columns and having guideways, at least two wheeled carriages mounted on said guideways of the frame, an individual drive for each carriage for causing the carriage to move horizontal-1y along the guideways of the frame and the cross-head when said guideways coincide as the cross-head arrives at its uppermost position, a punch mounted on each of said carriages for alternatively moving underneath said molding cross-head for transmitting pressure to the mixture in the immovable flask through said carriages, and means for moving said frame vertically together 'with the movable punches.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
US423480A 1964-11-30 1965-01-05 Apparatus for producing half molds by pressing Expired - Lifetime US3318365A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1084310D GB1084310A (en(2012)) 1965-01-05
FR996786A FR1416194A (fr) 1964-11-30 1964-11-30 Installation pour la confection des demi-moules de fonderie par compression
US423480A US3318365A (en) 1965-01-05 1965-01-05 Apparatus for producing half molds by pressing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US423480A US3318365A (en) 1965-01-05 1965-01-05 Apparatus for producing half molds by pressing

Publications (1)

Publication Number Publication Date
US3318365A true US3318365A (en) 1967-05-09

Family

ID=23679048

Family Applications (1)

Application Number Title Priority Date Filing Date
US423480A Expired - Lifetime US3318365A (en) 1964-11-30 1965-01-05 Apparatus for producing half molds by pressing

Country Status (2)

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US (1) US3318365A (en(2012))
GB (1) GB1084310A (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167208A (en) * 1977-06-15 1979-09-11 Erwin Buhrer Method and apparatus for the production of foundry molds
US5553655A (en) * 1992-08-13 1996-09-10 Bmd Badische Maschinenfabrik Durlach Gmbh Method for conveying moulding boxes and foundry moulding installation operating according to the method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724158A (en) * 1952-11-22 1955-11-22 Budd Co Apparatus for making mold shells
US2869189A (en) * 1957-12-16 1959-01-20 Belle City Malleable Iron Comp Helicoid strike-off device for variable height flasks
US2968846A (en) * 1958-03-05 1961-01-24 Osborn Mfg Co Foundry molding machine
US3200449A (en) * 1961-12-22 1965-08-17 Osborn Mfg Co Contour squeeze molding machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724158A (en) * 1952-11-22 1955-11-22 Budd Co Apparatus for making mold shells
US2869189A (en) * 1957-12-16 1959-01-20 Belle City Malleable Iron Comp Helicoid strike-off device for variable height flasks
US2968846A (en) * 1958-03-05 1961-01-24 Osborn Mfg Co Foundry molding machine
US3200449A (en) * 1961-12-22 1965-08-17 Osborn Mfg Co Contour squeeze molding machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167208A (en) * 1977-06-15 1979-09-11 Erwin Buhrer Method and apparatus for the production of foundry molds
US5553655A (en) * 1992-08-13 1996-09-10 Bmd Badische Maschinenfabrik Durlach Gmbh Method for conveying moulding boxes and foundry moulding installation operating according to the method

Also Published As

Publication number Publication date
GB1084310A (en(2012)) 1967-09-20

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