EP0178513B1 - Verfahren und Formanlage zur maschinellen Herstellung horizontal geteilter, kastenloser Sandblock-Giessformen - Google Patents

Verfahren und Formanlage zur maschinellen Herstellung horizontal geteilter, kastenloser Sandblock-Giessformen Download PDF

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Publication number
EP0178513B1
EP0178513B1 EP85112218A EP85112218A EP0178513B1 EP 0178513 B1 EP0178513 B1 EP 0178513B1 EP 85112218 A EP85112218 A EP 85112218A EP 85112218 A EP85112218 A EP 85112218A EP 0178513 B1 EP0178513 B1 EP 0178513B1
Authority
EP
European Patent Office
Prior art keywords
mold
station
plant
drags
machine
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
Application number
EP85112218A
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German (de)
English (en)
French (fr)
Other versions
EP0178513A3 (en
EP0178513A2 (de
Inventor
Eugen Dipl.-Ing. Bühler
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0178513A2 publication Critical patent/EP0178513A2/de
Publication of EP0178513A3 publication Critical patent/EP0178513A3/de
Application granted granted Critical
Publication of EP0178513B1 publication Critical patent/EP0178513B1/de
Expired 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
    • B22C15/23—Compacting by gas pressure or vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/10—Moulding machines characterised by the relative arrangement of the parts of same with one or more flasks forming part of the machine, from which only the sand moulds made by compacting are removed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/28—Compacting by different means acting simultaneously or successively, e.g. preliminary blowing and finally pressing

Definitions

  • the invention relates to a method for producing horizontally divided, boxless sand block casting molds, the lower bales and upper bales of which are alternately formed in the same molding station of a vacuum molding machine, wherein first a lower bale is shaped, turned and out of the molding station into a core setting station is driven, from which, after being fitted with cores, it is moved back into the molding station and inserted therein with a now formed upper bale, whereupon the now finished sand block casting mold is stripped and driven onto a casting line.
  • Another idea of the invention relates to a molding plant for carrying out this method, consisting of a vacuum molding machine, in the molding station of which the lower and upper bales of the casting molds are produced alternately, a core setting station, a casting and cooling section, and a pallet return section.
  • a method and a molding system of this type are known from DE-C-33 39 620, which forms the basis for the version of the upper handle of claim 1.
  • the invention represents a further development of this state of the art, in which for the first time a single-station molding machine is used for the alternate production of lower and upper bales.
  • the well-known one-station molding machine contains a mold frame, which consists of a lower and an upper box, as well as a hollow model plate carrier that is reversible in the molding station, which is divided into two chambers by a horizontal partition and is covered on both sides with the model plates for the lower and upper bales .
  • the empty upper box is located above the lower box and surrounds the sand bunker, which can be closed at its lower end by a shooting and pressing grate.
  • the lower box with the lower ball contained therein is moved out of the molding station, turned and placed on a core insertion station, from which it is moved back to the molding station after the upper mold has been lifted off the model plate and after it has been extended.
  • the upper box is then lowered onto the lower box and the mold added is stripped and then extended to a casting and cooling section.
  • the core setting time could indeed be extended without stretching the cycle time for forming the upper bale if the core setting station assigned to this molding machine were designed as a turntable or a cart track. Then, however, the number of sub-boxes would have to be multiplied in accordance with that of the parking spaces on the core setting station in this molding plant, so that the investment costs rose considerably.
  • the object of the invention is to avoid the disadvantages of the described prior art and to achieve economical production of upper and lower bales in one and the same forming station, not only a lower construction height than the known arrangement of the single station used here -Moulding machine allows, but also the number of machine mold boxes required is reduced as much as possible and yet the conditions are to be created so that the core setting time can be extended if necessary without having to extend the cycle time of the molding system. Furthermore, the prerequisites are to be created for optimally adapting the bale height of the casting molds to the respective model height in order to achieve the lowest possible sand consumption and low energy expenditure for the transport of the mold with a frequently changing mold program.
  • each lower bale is placed after turning on a bale transport device provided with centering devices and is stripped from the machine molding box of the vacuum molding machine before moving out of the molding station and that the associated top bale is in the same machine molding box as the lower ball is formed.
  • the device-based solution of the above object is that the vacuum molding machine is equipped with only one machine-fixed molding box, which can be turned around a horizontal axis, in which both the lower bale and the upper bale are formed and which before the respective bale is moved out of the forming station is stripped.
  • the vacuum molding machine 1 shown in FIG. 1 in various possible working positions has four guide columns 2, on which the support frame 3 for a sand bunker 5 and the support frame 4 for a machine mold box 6 can be adjusted vertically by means of hydraulic cylinders 3a and 4a.
  • the support frame 4 has a turning device 7 in order to be able to turn the machine mold box 6 about a horizontal axis.
  • the sand bunker 5 is provided on its underside with a closable shooting and pressing grate 8, which has such external dimensions that it can be immersed in the molding box 6.
  • a molding table 10 is fixedly attached, which has centering 11 for transport pallets 12 and flat hollow model plate carriers 13 on its table surface. It is provided with connections 23 for a vacuum and a compressed air source 24, which can come into operative connection via a valve control with the cavity in the model plate carrier, which can be sealed off from the molding table 10 by seals 13a.
  • the molding table is surrounded by two vertically adjustable transport roller devices 14 and 15, which enable the pallets and model plate carriers to be transported in and out in different directions.
  • the molding machine 1 includes a model plate changing device 16 (FIG. 2) with which the two model plate carriers with the model plates for lower and upper bales can be brought into the forming station alternately. Furthermore, the molding machine 1 is assigned a core setting station 17, which in the case shown is designed as a turntable, but could also be designed as a carriage track.
  • the molding system also includes a supply, casting and cooling section 18 with a transfer station 19, a casting station 20 and an unpacking station 21, to which a pallet return section 22 for the pallets freed from the sand block casting molds connects to the molding machine 1.
  • the model plate carrier 13 with the lower ball model is first pushed over the forming table 10 and lowered onto it, whereby it is precisely aligned by means of the centerings 11 and its cavity is tightly connected to the vacuum and compressed air connections in the forming table.
  • the support frames 3 and 4 are then controlled by the control device 23 until the machine mold box 6 with seals 6a rests on the model plate carrier 13 and the shooting grate 8 is immersed in the mold box 6 to a degree predetermined by the model height.
  • the shooting grate is opened and, via valves 26 controlled by the control device 25, a vacuum is suddenly produced in the mold table 10, which propagates through the hollow model plate carrier and air channels sealed with sand filters in the model plate, model and model plate carrier top side into the mold box and the molding sand in these can be shot.
  • the molding sand compacted in the process can then be pressed in by further immersing the shooting grate, which has meanwhile been moved into the closed position.
  • a pneumatic re-compression can also be carried out using an air blast pulse.
  • the support frame 3 with sand bunker 5 and support frame 4 with the mold box 6 containing the lower ball are moved upwards, until the required space for the turning process of the mold box 6 is reached.
  • the lifting process of the bale from the model can, if necessary, be supported by blowing compressed air into the cavity of the model plate carrier 13 after the line to the vacuum source has been closed again.
  • the model plate carrier 13 is now extended from the molding station, the molding box is turned through 180 ° by means of the turning device 7, and a transport pallet 12 is lowered onto the molding table by means of the transport roller device 15, which is raised relative to the transport roller device 14 and positioned exactly by means of the centerings 11.
  • the support frame 4 is lowered with the molding box 6 and the turned under ball placed on the pallet 12.
  • the molding box is stripped from the lower ball.
  • the transport roller device 15 is then raised again and the lower ball is extended into a core setting station 17 on the pallet 12 lifted off the molding table 10. Then the support frame 4 with the molding box 6 is raised again to the starting position.
  • the model plate carrier with the upper bale model plate is moved into the forming station and the upper trap is produced by vacuum shooting in the manner described above.
  • the molded box 6 with the compacted upper bale is not turned, however, but on a meanwhile on the transport Pallet 12 deposited from the core setting station 17 into the forming station and centered therein, with cores equipped with lower bales.
  • the molding box 6 can be stripped from the added casting mold by lowering it further into the position shown in dashed lines.
  • the sand bunker is lowered by means of the supporting frame until its closed grate 8 comes to the top of the upper bale resting on the lower bale. While holding the grate 8 in place, the support frame 4 is then raised and the molding box 6 is stripped.
  • the transport roller device 14 is then raised and the finished sand block casting mold is extended onto the supply, casting and cooling section 18, and a new molding cycle can begin.
  • a new molding cycle can begin.
  • only the upper bales present in the number of lower bales on the core setting station are then formed, so that no excess bales need to be knocked out in the forming station or core setting station.
  • the individual operations take place according to a clock sequence predetermined by the control device 25, it being possible for a bridging circuit to be provided for the aforementioned purpose.
  • the supply, pouring and cooling section 18 is expediently constructed in the manner of the system described in the international application according to PCT WO 81/02698 and has a deflection 19, a pouring station 20 and an unpacking station 21. In addition to this, there is a connection to the unpacking station 21 Separate pallet return path 22 to the molding machine 1 is provided, on which the empty, mechanically brushed transport pallets are moved directly into the molding station of the molding machine 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP85112218A 1984-10-15 1985-09-26 Verfahren und Formanlage zur maschinellen Herstellung horizontal geteilter, kastenloser Sandblock-Giessformen Expired EP0178513B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3437702A DE3437702C1 (de) 1984-10-15 1984-10-15 Verfahren und Formanlage zur Herstellung von horizontal geteilten kastenlosen Sandblock-Gießformen
DE3437702 1984-10-15

Publications (3)

Publication Number Publication Date
EP0178513A2 EP0178513A2 (de) 1986-04-23
EP0178513A3 EP0178513A3 (en) 1987-03-25
EP0178513B1 true EP0178513B1 (de) 1988-06-15

Family

ID=6247900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112218A Expired EP0178513B1 (de) 1984-10-15 1985-09-26 Verfahren und Formanlage zur maschinellen Herstellung horizontal geteilter, kastenloser Sandblock-Giessformen

Country Status (9)

Country Link
US (1) US4702301A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0178513B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS6195744A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CZ (1) CZ279944B6 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DD (1) DD257974A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3437702C1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DK (1) DK154809C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES8608356A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SU (1) SU1424725A3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104972065A (zh) * 2015-06-30 2015-10-14 重庆市合川区云天机械制造有限公司 可快速冷却的油封盖用砂模制造设备

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH675553A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1988-01-14 1990-10-15 Fischer Ag Georg
DE3626486A1 (de) * 1986-08-05 1988-02-11 Buehler Eugen Verfahren und vorrichtung zur herstellung geteilter, kastenloser giessformen
DE3801497C2 (de) * 1987-09-02 1996-02-15 Buehler Eisengieserei Gmbh Schießkopf für eine Saug-Preß-Formmaschine und Verfahren zu deren Betrieb
DE3742766C2 (de) * 1987-12-17 1996-04-04 Buehler Eisengieserei Gmbh Verfahren und Vorrichtung zur maschinellen Herstellung von aus umweltunschädliche Binder enthaltendem Modellsand und Füllsand bestehenden kastenlosen Gießformteilen
JP3407879B2 (ja) * 2000-04-13 2003-05-19 新東工業株式会社 鋳物砂の充填圧縮方法およびその装置
US6749003B2 (en) * 2000-04-13 2004-06-15 Sintokogio, Ltd. Compressing method for casting sand and device therefor
CN1311935C (zh) * 2000-04-21 2007-04-25 新东工业株式会社 造型装置用模板托架
ATE350183T1 (de) * 2001-03-16 2007-01-15 Sintokogio Ltd Verfahren und vorrichtung zum verdichten von formsand
RU2324568C2 (ru) * 2003-12-18 2008-05-20 Синтокогио, Лтд. Способ и устройство для формирования верхней и нижней частей безопочной литейной формы и способ замены используемой для этого двухсторонней модельной плиты
RU2354491C2 (ru) * 2004-01-20 2009-05-10 Синтокогио, Лтд. Опока для формовочной машины и способ формовки с использованием опоки
EP2807998B1 (en) 2006-09-27 2016-11-09 Unicharm Corporation Disposable diaper
CN104827001B (zh) * 2015-04-08 2017-02-22 山东时风（集团）有限责任公司 多工位射砂挤压水平造型机、造型系统及其造型方法
CN105799109B (zh) * 2016-05-13 2017-11-03 河南泰田重工机械制造有限公司 丙烯酸石英板材自动生产线及其生产工艺
US11065677B2 (en) * 2016-05-20 2021-07-20 Nemak, S.A.B. De C.V. Automated assembly cell and assembly line for producing sand molds for foundries
CN107159850A (zh) * 2017-07-08 2017-09-15 佛山市恒学科技服务有限公司 一种可调高度的热芯盒射芯机

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Publication number Priority date Publication date Assignee Title
US3540516A (en) * 1967-09-18 1970-11-17 Kelsey Hayes Co Method for making castings
US4108234A (en) * 1977-04-19 1978-08-22 Shine Thomas R Method and machine for producing sand molds
DE2902445A1 (de) * 1979-01-23 1980-07-31 Arenco Bmd Maschfab Verfahren zum herstellen von giessformen in einer automatischen formanlage
DE2924114A1 (de) * 1979-06-15 1980-12-18 Arenco Bmd Maschfab Formanlage zum herstellen von zweiteiligen, kastenlosen giessformen
EP0048248B1 (de) * 1980-03-24 1985-02-06 Eugen Dipl.-Ing. Bühler Verfahren und vorrichtung zum transport eines aus kastenlosen-giessformen zusammengestellten formenstrangs
GB2098896A (en) * 1981-03-18 1982-12-01 Doyle C F Ltd Apparatus for alternately moulding cope and drag moulds
JPS5853349A (ja) * 1981-09-22 1983-03-29 Sintokogio Ltd 鋳型造型方法及びその装置
DE3201844A1 (de) * 1982-01-22 1983-08-04 BMD Badische Maschinenfabrik Durlach GmbH, 7500 Karlsruhe Giesserei-formanlage zur herstellung zweiteiliger kastenloser formen
DK155483A (da) * 1983-04-07 1984-10-08 Dansk Ind Syndikat Maskine til fremstilling af kasseloese, vandret delte stoebeforme af sand eller lignende materiale
DE3339620C1 (de) * 1983-11-02 1984-04-26 Eugen Dipl.-Ing. 8877 Burtenbach Bühler Formanlage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104972065A (zh) * 2015-06-30 2015-10-14 重庆市合川区云天机械制造有限公司 可快速冷却的油封盖用砂模制造设备
CN104972065B (zh) * 2015-06-30 2017-03-22 重庆市合川区云天机械制造有限公司 可快速冷却的油封盖用砂模制造设备

Also Published As

Publication number Publication date
ES8608356A1 (es) 1986-07-16
ES547812A0 (es) 1986-07-16
CZ732185A3 (en) 1995-04-12
CZ279944B6 (cs) 1995-09-13
SU1424725A3 (ru) 1988-09-15
EP0178513A3 (en) 1987-03-25
DE3437702C1 (de) 1985-06-13
DK154809C (da) 1989-05-29
DD257974A1 (de) 1988-07-06
DK467685A (da) 1986-04-16
US4702301A (en) 1987-10-27
DK467685D0 (da) 1985-10-11
EP0178513A2 (de) 1986-04-23
JPS6195744A (ja) 1986-05-14
JPS6322904B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-05-13
DK154809B (da) 1988-12-27

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