EP1512472A2 - Procédé et dispositif pour la production de nouyaux ou de moules - Google Patents

Procédé et dispositif pour la production de nouyaux ou de moules Download PDF

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Publication number
EP1512472A2
EP1512472A2 EP04020590A EP04020590A EP1512472A2 EP 1512472 A2 EP1512472 A2 EP 1512472A2 EP 04020590 A EP04020590 A EP 04020590A EP 04020590 A EP04020590 A EP 04020590A EP 1512472 A2 EP1512472 A2 EP 1512472A2
Authority
EP
European Patent Office
Prior art keywords
shooting
mixture
plate
opening
protective device
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.)
Withdrawn
Application number
EP04020590A
Other languages
German (de)
English (en)
Other versions
EP1512472A3 (fr
Inventor
Joachim Dipl.-Ing. Laempe
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.)
Laempe and Gies GmbH
Original Assignee
Laempe and Gies GmbH
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 Laempe and Gies GmbH filed Critical Laempe and Gies GmbH
Publication of EP1512472A2 publication Critical patent/EP1512472A2/fr
Publication of EP1512472A3 publication Critical patent/EP1512472A3/fr
Withdrawn legal-status Critical Current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
    • B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles

Definitions

  • the invention relates to a process for the preparation of molds or cores, in particular for Foundry of a mixture of sand or Molding material and a water-soluble and / or Water containing crystal, wherein the Mixture by means of a shooting unit from this in a shooting by at least one on a Shooting plate arranged broke opening in a Mold or core tool shot in and is subsequently cured.
  • the invention further relates to a device for Production of molds or cores, in particular for foundry purposes of a mixture of sand or Molded material and a preferably inorganic Binder, in particular water-soluble or a Water glass truss is with a shooting tube and a a shooting head having shooting unit, wherein at the shooting head a shooting plate with at least a reject opening is arranged.
  • a device for Production of molds or cores in particular for foundry purposes of a mixture of sand or Molded material and a preferably inorganic Binder, in particular water-soluble or a Water glass truss is with a shooting tube and a a shooting head having shooting unit, wherein at the shooting head a shooting plate with at least a reject opening is arranged.
  • Such a method and such Device are for example from DE 102 00 927 A1 known and have proven themselves.
  • This will be the using sand or molding material and the binder, about one inorganic water-soluble binder or a Waterglass binder, to a mixture of core sand or Molding material mixed.
  • the still flowable in this state Mixture is, for example, in one above one Shooting plate arranged space to a mixture of core sand or molding material mixed in this condition is flowable.
  • This mixture above the shooting plate does not become independent through the downwardly open reject openings the shooting plate dissipated because of the geometry
  • the openings are chosen so that the core sand bridges forms and sticks in the openings. These broke openings can also be designed as a shooting or diving nozzle be.
  • the sand is now with an example mediated by compressed air pressure force applied, whereupon the core sand or the molding material through the reject openings as well as matching entrance openings is introduced into the tool in the same. After that there is a solidification of the core sand or molding material in that this withdrawn his solution water or he is dried out.
  • the procedural solution to this problem is thereby characterized in that between two shooting operations of the Area of the outlet opening humidifies and / or moist is held. Due to the humidity in the area of Scrap openings or shooting nozzles will harden the core sand mixed with the water-soluble binder or Molded material avoided or delayed for a sufficiently long time.
  • the prevention of curing of the Mixture of sand and binder supported by that in the Area of the broke opening the shooting plate with an in essential gas-tight protection device is provided.
  • the liquid is in Area of the reject openings and the guard distributed in a mist.
  • the Area of the reject openings or shooting nozzles one or several liquid nozzles are arranged, which the feed the respective transport gas into the liquid, whereupon these in the available space means of the gas is distributed and a curing of the with the Binder mixed core sand or molding binder within the reject openings or shooting nozzles prevented.
  • the achievable moisture level in the area of the reject opening is set.
  • a user of the For example, influence the process in which Dimensions of the moisture in the area mentioned, and so on different long downtimes set up the shooting machine without losing it would have to accept the effectiveness of the procedure.
  • the metering device also any a kind of sensory device connected by means of of which the metering of the liquid is based on measured values, about the temperature or pressure, be parameterized can.
  • the initially defined device is to solve the Task characterized in that at the shooting plate a Moistening device is provided. This can be done in the Area of the outlet opening brought a liquid which keeps the area moist and with a curing of Binder mixed core sand or molding material prevented.
  • the humidifier is at a Development of the device advantageous to the of Shooting unit opposite side or underside of the Shooting plate arranged.
  • the inventive Device can be in the inventive Device on the shooting plate a fender arrange, which is provided with the moistening device.
  • This measure reduces the required amount Moisture and allows in addition to simultaneous Humidifying the area of the outlet opening a protection the outward-facing side of the shooting plate about the arrangement of a number of correspondingly shaped walls for example, in the sense that these are against their environment is completed gas-tight and so on reduces atmospheric influences on the curing process become.
  • the Protective device In a development of the device overlaps the Protective device at least the area of the reject opening at the shooting plate at least partially. Accordingly, it must is not a complete inclusion of this area to act through the fender, there are also fenders conceivable in which to some of the already mentioned walls is omitted, so that for example a downwardly open wall arrangement arises. This must also do not completely overlap the shooting plate, it Suffice one of the areas of committee opening Guard.
  • the protective hood-like formed and has a cavity Preferably, in another embodiment of the Device according to the invention, the protective hood-like formed and has a cavity.
  • the hood can usually from the bottom of the shooting plate to be slipped, creates a closed, limited Space to moisten and isolate the shooting plate against the influences favoring the hardening.
  • the reject opening is by providing the cavity defined volume into which the liquid, for example, water, fine about the humidifier sprayed can be sprayed.
  • the inside of the Cavity air, with the ejection openings or nozzles in contact can be so on the desired Humidity can be adjusted.
  • the protective device with a sealant Mistake For substantially gas-tight sealing of the shooting head or the outwardly facing side of the shooting plate expediently the protective device with a sealant Mistake. This is, for example, on the edges of used hood arranged and prevented in contact with Areas at shooting head or shooting plate the supply and the Escape gaseous or liquid aggregates, leaving themselves also the desired moisture in the area of the reject opening well adjusted and maintained.
  • the protective device combinable with a gas purging hood and between the shooting head and a forming and / or core tool arranged.
  • This allows the continuous operation of a core shooter further eased and their downtime be reduced because fewer interventions are necessary.
  • a shooting can then namely the first Shooting unit with the shooting head and the shooting plate off be moved out of the mold or core tool, so that these are adjacent to each other.
  • a device according to the invention is moved, whose one side of the shooting plate and the other side of it Facing mold facing. While on the first page the Shooting plate covered like a hood and with a liquid is moistened on the other side in the Mold by gas flushing with air or air Catalyst gas accelerated curing process in the mold instead of.
  • the drawing figure shows an im Whole with 1 designated device for the production of Molds or cores, in particular for foundry purposes Mixture of sand and a binder with a shooting tube 3 and a shooting head 4 having shooting unit 2.
  • Am lower end of the shooting head 4 is a shooting plate. 5 arranged, over which the mixture lies, in a Shooting operation through a shooting nozzle 6 or a reject opening 7 from the shooting unit 2 in a core tool. 8 is shot.
  • the shooting tube 3 with a Pressure applied, so that the mixture, for example, by the shooting nozzle 6, in an inlet opening 9 of the Core tool 8 engages from the above the shooting plate. 5 expelled space and in the in the core tool for accommodating the mixture provided space 14 shot will and will fill this.
  • the Shooting nozzle 6 is a reject opening 7.
  • the shooting unit 2 is off the core tool 8, as indicated by the arrows P1 and P2 hinted, moved out, so that the two spaced from each other.
  • the Guard 10 is hood-like and has a cavity 12. When she reaches the shooting plate 5 moved up, it overlaps these, while the Shooting nozzle 6 engages in the cavity 12. On the edges of the Protective device is not shown Sealing arranged, which the cavity 12 and thus also the shooting nozzle 6 or the reject opening 7 gas-tight closes against the environment.
  • a moistening device which is able to access through a wall of the Guard 10 thorough access opening 13 a To distribute liquid (F) fog-like in the cavity 12, so that the area of the reject opening 7 or the Shooting nozzle 6 is kept moist, which there the Curing the mixture of sand and binder is prevented.
  • a gas purging hood 11 is arranged and with the protection device 10 connected.
  • Cavity 12 ' Provided covers the Gas Jardinhaube 11, after the core tool 8 is moved up to this, the upper End with the inlet opening 9.
  • an access opening 13 ' the cavity 12 'of the gas purging hood 11 with air or a Catalyst gas are charged, so that from the in the Kernwerkmaschine 8 located mixture of sand and binder the Water components are expelled faster and the Hardening process runs faster.
  • the above drawing shows an inventive Device 1 for producing molds or cores, especially for foundry purposes of a mixture of sand or molding material and a binder, in particular water-soluble or a water glass binder is, with a Shooting tube 3 and a shooting head 4 having shooting unit 2, wherein at the shooting head 4 a shooting plate 5 with at least one reject opening 7 is arranged.
  • Characterized in that at the shooting plate 5 is a humidifying is provided is an undesirable curing the mixture in the area of the reject opening 7 or the Shooting nozzle 6 avoided.
  • the device 1 is suitable for implementation a method according to the invention for the production of molds or cores, in particular for foundry purposes from a Mixture of sand or molding material and a binder, the is in particular water-soluble or a water glass binder, wherein the mixture by means of a shooting unit 2 of this in a shooting process by at least one at a Shooting plate 5 arranged reject opening 7 in a form or Core tool 8 shot and then is cured.
  • This method is characterized by the fact that the Preventing or slowing down the curing process of Mixing proportions between two shooting operations of the area the reject opening 7 moistened and / or kept moist becomes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Casting Devices For Molds (AREA)
EP04020590A 2003-09-03 2004-08-31 Procédé et dispositif pour la production de nouyaux ou de moules Withdrawn EP1512472A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10340491 2003-09-03
DE2003140491 DE10340491B3 (de) 2003-09-03 2003-09-03 Verfahren und Vorrichtung zur Herstellung von Formen oder Kernen

Publications (2)

Publication Number Publication Date
EP1512472A2 true EP1512472A2 (fr) 2005-03-09
EP1512472A3 EP1512472A3 (fr) 2005-10-05

Family

ID=34129628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04020590A Withdrawn EP1512472A3 (fr) 2003-09-03 2004-08-31 Procédé et dispositif pour la production de nouyaux ou de moules

Country Status (2)

Country Link
EP (1) EP1512472A3 (fr)
DE (1) DE10340491B3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007062706A1 (fr) * 2005-12-01 2007-06-07 Laempe & Mössner GmbH Procede et dispositif de fabrication de moules ou de noyaux, en particulier pour la fonderie
CN108465784A (zh) * 2018-05-31 2018-08-31 天津蒙德利尔集装箱配件有限公司 一种用于角件覆膜砂砂壳壳芯模具
CN110248747A (zh) * 2016-12-06 2019-09-17 索普莱恩有限责任公司 用于制造模具和型芯的方法和制模或制芯工具
CN110252963A (zh) * 2019-07-30 2019-09-20 侯马市东鑫机械铸造有限公司 用于铸造生产线上的射砂整体工装
WO2020254468A1 (fr) * 2019-06-21 2020-12-24 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Dispositif d'application d'un agent de séparation dans le cas d'une boîte à noyau fermée

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005043754B4 (de) * 2005-09-13 2008-09-25 Minelco Gmbh Verfahren und Vorrichtung zur Herstellung von Kernformlingen für die Gießereitechnik
DE102007021459A1 (de) 2007-05-08 2008-11-13 Volkswagen Ag Kernschießmaschine
DE102013204619B3 (de) * 2013-03-15 2014-05-15 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Vorrichtung zum Herstellen von Formen oder Kernen für Gießereizwecke

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2687942B1 (fr) * 1992-02-27 1997-08-14 Peugeot Procede et dispositif de moulage de noyaux en sable de fonderie contenant une resine durcissable, permettant d'eviter le colmatage de buses d'injection du sable.
DE10200927A1 (de) * 2001-08-10 2003-03-06 Laempe Joachim Verfahren und Vorrichtung zur Herstellung von Formen oder Kernen für Giessereizwecke
DE10144193C1 (de) * 2001-09-08 2002-10-31 Vaw Mandl & Berger Gmbh Linz Verfahren und Formschießmaschine zum Herstellen von Formteilen, wie Gießkernen, für Gießformen zum Vergießen von Metallschmelze

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007062706A1 (fr) * 2005-12-01 2007-06-07 Laempe & Mössner GmbH Procede et dispositif de fabrication de moules ou de noyaux, en particulier pour la fonderie
US7934534B2 (en) 2005-12-01 2011-05-03 Laempe & Mossner Gmbh Method and device for producing moulds or cores, in particular for foundry purposes
CN110248747A (zh) * 2016-12-06 2019-09-17 索普莱恩有限责任公司 用于制造模具和型芯的方法和制模或制芯工具
CN108465784A (zh) * 2018-05-31 2018-08-31 天津蒙德利尔集装箱配件有限公司 一种用于角件覆膜砂砂壳壳芯模具
WO2020254468A1 (fr) * 2019-06-21 2020-12-24 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Dispositif d'application d'un agent de séparation dans le cas d'une boîte à noyau fermée
CN110252963A (zh) * 2019-07-30 2019-09-20 侯马市东鑫机械铸造有限公司 用于铸造生产线上的射砂整体工装

Also Published As

Publication number Publication date
DE10340491B3 (de) 2005-03-10
EP1512472A3 (fr) 2005-10-05

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