• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method and apparatus for producing flaskless foundry molds made up of copes and drags of wet casting foundry sand, which is blasted into a cavity to form the mold with the use of vacuum. The sand is pressed mechanically while aspirating air therefrom. The gap coming into existence between the pressing plate and the back side of a mold during pneumatic impact compaction is filled with sand before pressing so that a flat back side is produced on the mold so that when casting takes place later there is not danger of the bottom of the mold fracturing or of deformation taking place.
    公开号:SU1422987A3
    申请号:SU864025046
    申请日:1986-02-25
    公开日:1988-09-07
    发明作者:Бюлер Ойген
    申请人:Ойген Бкшер (DE)；
    IPC主号:
    专利说明:

    4: IvD
    IND
    (; 0 00
    s
    权利要求:
    Claims (4)
    [1]
    one . 14
    The invention relates to a foundry industry5, in particular, to the manufacture of flaskless molds consisting of two halves with deeply projecting parts of the mold, for example, for forming engine housings.
    The purpose of the invention is to improve the quality and durability of the forms.
    The method of making the molds is in TOMj that the remaining diis after compaction of the sand in the mold is an air gap between the mold tab and the presser plate is filled with molding sand with the roller shutter open due to the second instantaneous vacuum in which air is sucked through the presser plate. Then this sand can be compacted by means of mechanical squeezing with the roller shutter closed to form a flat surface of the control room and at the same time air can be drawn off from the compaction-leg of the molding sand5, which allows reducing the effects of gas spin-off and gas generation during pouring,
    The hardness of the shape along the contour of the model depends on the direction of the injection flow.
    compressed air from the side of the mold control and through the side walls of the mold using: pressing plates and frames, which allows the pressure generated at the bottom and on the walls to form during compaction. Directional control of the compaction process allows for sufficient compaction between the ribs also in the case of high streamlined models and prevents the appearance of deformation.
    When filling the upper cavity Form1F1 process instant impact. VIA vacuum is summed up by the force of gravity acting on the sand. Consequently, the process of instantaneous exposure to vacuum makes it possible to infer a smaller pressure difference than in the case of the lower mold cavity. This may also occur due to the use of reduced free cross-sectional areas of the air passage openings between the suction cavity and the upper mold cavity.
    On
    thirty
    35
    45
    50
    The device is a hollow holder of model plate 1, divided by vertical partition walls 2 into central air chamber 3 and outer air chamber A encircling it with a circle. The upper and lower walls of the central air chamber 3 form upper and lower model plates 5 connected to models 6. Air chambers through ducts 7 and 8 and a valve circuit (not shown) can jointly and independently of one another be connected to a source of vacuum or compressed air, and there can also be different pressures in the chambers. ation. Each of these chambers, through the air passage openings 9, into which mesh films are inserted or glued to prevent sand infiltration, are connected to the inner cavity of the upper and lower mold frames 10, which are doubled with & m walls and contain air chambers 11 connected to ducts 12 and with the cavity 13 of the form through the passage holes 9. The internal cavity of the pressure plate 14 forms an air chamber 15 ,. through ducts 16 attached to the Valve circuit.
    In the press plate 14, preferably in the center, horizontally rotatably mounted at least one roller 17 in which there is a slot-like opening 18 for instantaneous exposure to vacuum. On one side, the roller has a stop 19, which, when the inlet is closed, forms one plane with the surface of the pressure plate 14, which prevents it from being pressed into the mold during pressing. The press plate 14, together with the hopper 20, is moved vertically by means of the pressure cylinder 21, the overlay shutter is opened or closed by turning 90 by means of cylinders (not shown).
     The device works as follows.
    The cavities 13 of the form through the groove 18 are filled with sand due to suction with air jerks, which can be produced separately or in combination with one another through the chamber 5 of the hollow holding 55 bodies of the model plate 1 and (or) the hollow drawing shows the device of the pressure plate 14 and (or) frames 10 forms. After that, the roller shutter is closed and, with a fixed pressure for the manufacture of casting molds, the proposed method
    0
    0 5
    five
    0
    five
    five
    0
    The device is a hollow holder of model plate 1, divided by vertical partition walls 2 into central air chamber 3 and outer air chamber A encircling it with a circle. The upper and lower walls of the central air chamber 3 form upper and lower model plates 5 connected to models 6. Air chambers through ducts 7 and 8 and a valve circuit (not shown) can jointly and independently of one another be connected to a source of vacuum or compressed air, and there can also be different pressures in the chambers. ation. Each of these chambers, through the air passage openings 9, into which mesh films are inserted or glued to prevent sand infiltration, are connected to the inner cavity of the upper and lower mold frames 10, which are doubled with & m walls and contain air chambers 11 connected to ducts 12 and with the cavity 13 of the form through the passage holes 9. The internal cavity of the pressure plate 14 forms an air chamber 15 ,. through ducts 16 attached to the Valve circuit.
    In the press plate 14, preferably in the center, horizontally rotatably mounted at least one roller 17 in which there is a slot-like opening 18 for instantaneous exposure to vacuum. On one side, the roller has a stop 19, which, when the inlet is closed, forms one plane with the surface of the pressure plate 14, which prevents it from being pressed into the mold during pressing. The press plate 14, together with the hopper 20, is moved vertically by means of the pressure cylinder 21, the overlay shutter is opened or closed by turning 90 by means of cylinders (not shown).
     The device works as follows.
    The cavities 13 of the form, through the groove 18, are filled with sand due to the suction of air shocks, which can be produced separately or in combination with one another through the chamber 5 of a hollow hollow. After that, the roller shutter is closed and, with a fixed pressure plate 1422987, a pneumatic blow is produced in the mold cavity, while air is removed through the central air chamber 3 in the model plate holder and / or into the cavity 11, depending on the shape of the model. At the same time, the sand in the mold cavity 13 is compacted and a free cavity between the mold counter and the pressure plate occurs. This gap is filled with molding sand by instantaneous exposure to vacuum, then press molded with cylinders 21 with a roller closed.
    3. The method according to claim 1, characterized by the fact that the compressed air is supplied through the sides of the mold,
    4. Method according to paragraphs. 1-3, which is based on the fact that the upper and lower forms are made at the same time, while in the upper cavity
    10 forms serve vacuum smaller in size, than in lower.
    flared plates with holes, divided by vertical partitions into two independent pressure and rarefaction chambers, which is characterized by the fact that, c. to improve the quality and durability of the molds, it is equipped with a hollow press plate with a device for inserting into
    25 foundry tooling molding sand and vents, while the floor press plate communicated with a source of compressed air, a device for entering the molding mixture is made in the form
    30 horizontally located roller with an indenter-shaped opening, the axis of which is perpendicular to the axis of the roller,
    maybe 5. A device for making casting molds from the molding sand shutter prior to the formation of a flat sand surface-15 containing sand-blowing heads of the mold control unit, with the opening, the mold frame, and the hollow holder, air is modeled from the compacted molding sand. Then, the mold halves are razsenkovyv in a known manner, assembled and the mold ready for pouring is folded on a pallet.
    When it is advisable to use different pressures under the holder of the model plate 1 and above it in the cavity 13 of the mold, then the air chambers 3 of the holder of the model plate 1 can be divided with the help of horizontal partitions (not shown) into chambers one above the other.
    Invention Formula
    1. A method of making molds from mold sand, in particular bezopochnyh mold halves with deep protrusions of the mold or a large number of ribs, including the injection of mold sand into the mold tooling by creating a vacuum in it, compressed with compressed air and subsequent pressing during the pressing process, air is drawn out of the molding sand, characterized in
    that, in order to improve the quality and durability of the molds, after compaction with compressed air, the molding sand is additionally fed into the cavity that forms in the casting tooling.
    2. The method according to claim 1, wherein the compressed air is supplied from the mold control side.
    [2]
    35
    40
    45
    50
    moreover, the roller is installed with a rotation of 90 ° relative to the horizontal axis, and the vents are located on the press plate from the side of the working cavity.
    6. A device according to claim 5, characterized in that the roller has a side shoulder on one side located parallel to the axis of the hole.
    7. The device according to claim 5, about the aphid, is that the form frame is made with ABoftHbiNOt walls forming a cavity connected to a source of compressed air or vacuum, while the internal walls of the frame are made with screws.
    8. The device according to claim 5, of which is that the hollow model holder is divided by a partition into upper and lower chambers.
    987
    3. The method according to claim 1, characterized by the fact that the compressed air is supplied through the sides of the mold,
    [3]
    4. Method according to paragraphs. 1-3, which is based on the fact that the upper and lower forms are made at the same time, while in the upper cavity
    [4]
    10 forms serve vacuum smaller in size, than in lower.
    flared plates with holes, divided by vertical partitions into two independent pressure and rarefaction chambers, which is characterized by the fact that, c. to improve the quality and durability of the molds, it is equipped with a hollow press plate with a device for inserting into
    mold sanding equipment and vents, while the floor of the press plate communicates with a source of compressed air, the device for entering the molding sand is made in the form
    horizontal roller with an indenter-shaped hole, the axis of which is perpendicular to the axis of the roller,
    maybe 5. A device for the manufacture of casting molds from sand molding sand, comprising a sandblasting head, a mold frame, a hollow model holder
    moreover, the roller is installed with a rotation of 90 ° relative to the horizontal axis, and the vents are located on the press plate from the side of the working cavity.
    6. A device according to claim 5, characterized in that the roller has a side shoulder on one side located parallel to the axis of the hole.
    7. The device according to claim 5, about the aphid, is that the form frame is made with ABoftHbiNOt walls forming a cavity connected to a source of compressed air or vacuum, while the internal walls of the frame are made with screws.
    8. The device according to claim 5, of which is that the hollow model holder is divided by a partition into upper and lower chambers.
    VNIIII Order 4A44 / 59
    Random polygons pr-tie, Uzhgorod, st. Design, And
    Circulation 741
    Subscription
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1422987A3|1988-09-07|Method and apparatus for manufacturing the casting moulds from raw moulding sand
    US3528481A|1970-09-15|Core making machine with hardening gas manifold
    CN2868619Y|2007-02-14|Manual core-making solidifying machine using cold-core-sand
    EP0122116A2|1984-10-17|A machine for the production of flaskless, horizontally divided casting moulds of sand or similar material
    RU1780917C|1992-12-15|Method and device for manufacturing one-time casting molds
    JP3449413B2|2003-09-22|Blow nozzle of frameless mold making machine
    SU1097432A2|1984-06-15|Under-model plate for vacuum moulding
    JPH0647495A|1994-02-22|Method and machine for making cast die or cast die part from sand cast mold
    SU1338962A1|1987-09-23|Moulding machine for making half-moulds
    SU831356A1|1981-05-23|Sand blasting-pressing moulding machine for producing casting moulds
    RU2035257C1|1995-05-20|Device for manufacture of single-use molds
    SU810360A1|1981-03-07|Method of producing casting moulds
    JPH08300104A|1996-11-19|Molding method and its apparatus
    SU1205985A1|1986-01-23|Method of producing vacuum mould
    SU1426692A1|1988-09-30|Method of producing casting moulds for vacuum moulding and equipment for testing moulding materials
    SU982841A1|1982-12-23|Moulding machine for producing casting moulds
    SU984639A1|1982-12-30|Vacuum moulding eqipment
    SU1380850A1|1988-03-15|Method of compacting moulds and cores
    JPH0646594Y2|1994-11-30|Core molding machine
    SU1470426A1|1989-04-07|Apparatus for bilateral pressing of moulds
    SU1704902A1|1992-01-15|Pattern fitting out
    SU1750846A1|1992-07-30|Method of manufacture of moulds
    SU1488108A1|1989-06-23|Method of making moulds
    SU522895A1|1976-07-30|The method of obtaining the gating channel in the form
    SU1258592A1|1986-09-23|Vacuum moulding process
    同族专利:
    公开号 | 公开日
    CN86101182A|1986-08-27|
    JPH07115120B2|1995-12-13|
    US4724888A|1988-02-16|
    DE3507179C1|1985-10-31|
    CN1007793B|1990-05-02|
    JPS61202746A|1986-09-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2844464C2|1978-10-12|1983-03-24|Bühler, Eugen, Dipl.-Ing., 8871 Burtenbach|Method and device for compacting casting molds|
    DE3021644A1|1979-08-22|1981-03-26|Sintokogio, Ltd., Nagoya, Aichi|MOLDING MACHINE|
    US4318437A|1980-08-29|1982-03-09|Kemp Willard E|Metal casting system|
    DE3304148C1|1983-02-08|1984-02-09|Eugen Dipl.-Ing. 8877 Burtenbach Bühler|Process and device for compressed air-assisted lifting and lowering of models from casting molds|
    DK155483A|1983-04-07|1984-10-08|Dansk Ind Syndikat|MACHINE FOR MANUFACTURING CASHLESS, HANDLED SHARED SUBSTANCES OF SAND OR SIMILAR MATERIAL|
    DE3339620C1|1983-11-02|1984-04-26|Eugen Dipl.-Ing. 8877 Burtenbach Bühler|Molding line|DE3623992C2|1986-07-16|1989-05-03|Eugen Dipl.-Ing. 8877 Burtenbach De Buehler|
    DE3701438A1|1987-01-20|1988-07-28|Josef Mertes Engineering Fuer|METHOD AND DEVICE FOR COMPRESSING GRAIN-MOLDED MOLDING SUBSTANCES e.g. FOUNDRY MOLD SAND|
    DE3801497C2|1987-09-02|1996-02-15|Buehler Eisengieserei Gmbh|Shooting head for a suction-press molding machine and method for its operation|
    DE3742766C2|1987-12-17|1996-04-04|Buehler Eisengieserei Gmbh|Method and device for the mechanical production of model sand and fill sand consisting of environmentally harmless binders and castless mold parts|
    SE460955B|1987-12-18|1989-12-11|Kommanditbolaget Cold Isostati|SATISFIED IN PREPARATION OF A TUBE POWDER PRESSURE BODY AND A FOOD IMPLEMENTED BY THE SUITABLE DEVICE|
    DE3828436C1|1988-08-22|1989-12-21|Eugen Dipl.-Ing. 8877 Burtenbach De Buehler|Method for the impulse compaction of moulding sand|
    DE3916530C2|1989-05-20|1996-11-07|Buehler Eisengieserei Gmbh|Process for the production of casting molds by pulse compression|
    DE4318384A1|1993-06-03|1994-12-08|Badische Maschf Gmbh|Apparatus for compacting moulding sand|
    TW279141B|1994-10-07|1996-06-21|Sintokogio Ltd|
    DE19537204A1|1995-10-06|1997-04-10|Ernst Otto Kruse|Moulding machine for sand moulds|
    DE29805875U1|1998-04-01|1999-08-26|Kienle Rainer|Molding machine|
    WO2001056723A1|2000-02-04|2001-08-09|Disa Industries A/S|Method and apparatus for producing casting moulds or mould parts|
    US6622772B1|2002-04-26|2003-09-23|Hunter Automated Machinery Corporation|Method for forming sand molds and matchplate molding machine for accomplishing same|
    US9308578B2|2011-12-21|2016-04-12|Bedloe Industries Llc|Subsurface chills to improve railcar knuckle formation|
    CN103111589B|2013-02-27|2015-07-15|中联重科股份有限公司|Sand box for evaporative pattern casting|
    KR101512376B1|2013-12-11|2015-04-16|디에스메탈|pattern molding apparatus for full mold|
    CN109108235A|2018-08-15|2019-01-01|许云东|A kind of formative method and device for green sand molding|
    CN114096360A|2020-04-27|2022-02-25|雅马哈发动机株式会社|Sand mold manufacturing device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19853507179|DE3507179C1|1985-03-01|1985-03-01|Method and device for producing boxless molds|LV920210A| LV5051A3|1985-03-01|1992-11-20|Saturation of the production of the flame forms from the wet type of flour and the equipment for its realization|
    LTRP246A| LT2238B|1985-03-01|1992-12-18|THE DRAWING FORM FOR THE DRAINING OF THE DREGN FORMING FORM IN THE FORM OF CUTTING AND FOR ITS REALIZATION|
    [返回顶部]