EP0098405B1 - Procédé pour la fabrication de pièces moulées à vert de grand format (surface des moules 1-3 m2) pour la coulée en motte - Google Patents

Procédé pour la fabrication de pièces moulées à vert de grand format (surface des moules 1-3 m2) pour la coulée en motte Download PDF

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Publication number
EP0098405B1
EP0098405B1 EP19830105691 EP83105691A EP0098405B1 EP 0098405 B1 EP0098405 B1 EP 0098405B1 EP 19830105691 EP19830105691 EP 19830105691 EP 83105691 A EP83105691 A EP 83105691A EP 0098405 B1 EP0098405 B1 EP 0098405B1
Authority
EP
European Patent Office
Prior art keywords
sand
mould
box
characterizing feature
procedure
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
EP19830105691
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German (de)
English (en)
Other versions
EP0098405A1 (fr
Inventor
Oskar Schillinger
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0098405A1 publication Critical patent/EP0098405A1/fr
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C21/00—Flasks; Accessories therefor
    • B22C21/12—Accessories
    • B22C21/14—Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars
    • 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
    • B22C15/02—Compacting by pressing devices only
    • B22C15/08—Compacting by pressing devices only involving pneumatic or hydraulic mechanisms

Definitions

  • the invention relates to a process for the production of wet cast molded parts in large format for boxless casting according to the preamble of claim 1.
  • Boxless casting molds are generally known and have the advantage that expensive mold boxes which require maintenance and are subject to constant wear are eliminated.
  • the influence of heat leads to deformations, which affects the accuracy of the castings.
  • DE-B 2 407 878 discloses a process for producing molded parts for cast-less casting, in which the sand is introduced into a permanent mold and the sand covered with a film is compacted. With this known method, however, it is not possible to produce wet cast molded parts in large format in the manner described.
  • the object of the invention is to provide a method in which the sand is introduced in such a way that air inclusions in the sand are not possible and uniform compacting thereof is achieved in a simple manner.
  • the main advantage of the invention is that the elastic film corresponds to a press plate which is divided into an infinite number of press points, which the sand layer, which is approximately equally thick on all sides, is ideally able to compact.
  • the centrifugal head 7 in the feed line for wet cast sand 5 works in principle similar to a sand sling in 2 speed ranges. This makes it possible that, in the case of extremely unfavorable model parts, pre-compression can be achieved for a short time by switching to level II.
  • the wet cast sand 5 is applied to the model 1 in an equally thick layer and covered by an elastic film 10. This is first sucked in by vacuum 8 on the underside of the press head 11 and, after being placed on the molding box 4, is pressed onto the sand surface by means of compressed air 9, which is generated by a pulsator 12. Here, the press head 11 is locked by means of hydraulic cylinders 13. Then the press head 11 is briefly removed via rails 14 and the backfill 6 is applied.
  • Model 1, model plate 2 and plate carrier 3 form a unit that oscillates between stations B / 1 and D / 1.
  • air nozzles 4 ' are attached at different heights.
  • Air nozzles 2 ′ for lifting the box 4 are also arranged in the model plate 2, via which compressed air 17 is pressed between the model and the bale.
  • the roller conveyor 18 takes over the final lifting out of the model.
  • Fig. 2 shows the arrangement of the bar 15 with the sliding bolt 16, which automatically retracts when the bolt 16a is tightened and releases the box for removal.
  • 3 and 4 show the weight, which ensures an even load on the bale.
  • the joint between top and bottom box is sealed properly if each box pair is made together.
  • Fig. 5 shows a molding and casting plant as an example, which illustrates the favorable transport routes of the various parts of the device.
  • the top box runs through the same stations on the OT line.
  • the transport pallet is placed at E / 1 and runs over G / 1 - G / 2 -H / 1 ... -K / 2-1 / 1- t / 2 ... K / 3 - L or M - Line to M / 1 and back to E / 1.
  • the weight is put on at K / 2 and runs over 1/1 into the casting line 1/2 ... After leaving the casting line, the weight is lifted off at K / 3 and transferred to K / 2.
  • Casting is done in groups of 5-8 shapes, depending on the wall thickness of the castings. Before pouring, each mold is tilted by 5 to prevent the upper bale from being exposed to large areas during filling. The cast molds remain in the casting section until the outer skin solidifies. Only then is the tipping division brought into the horizontal position, the weight of the weight lifted off when moving out to station K / 4 and transferred to an incoming bale at station K / 3. This starts a new cycle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)

Claims (6)

1.- Procédé pour la fabrication de parties de moules moulées à vert de grand format pour la coulée en motte, où du sable est introduit dans un moule et est serré par pression par l'intermédiaire d'une feuille, caractérisé par le fait que, lors d'une première étape de remplissage (I), le sable (5) de moulage à vert est, appliqué en une couche, de tous côtés, sur un modèle (1), dans un châssis de moulage (4) qui délimite la surface du sable sur la plaque- modèle (2) et par l'intermédiaire d'une roue centrifugeuse (7) qui, afin d'épargner l'équipement de modèle, tourne à une vitesse de rotation réduite, est recouvert et serré au moyen d'une feuille élastique, et en ce qu'ensuite, lors d'une seconde étape de remplissage (II), on introduit le tamponnage (6) et on effectue le serrage final du moule.
2.- Procédé selon la revendication 1 pour le serrage du sable lors de l'étape de remplissage I, caractérisé par le fait qu'une tête de serrage (11), sur la face inférieure de laquelle est maintenue par du vide (8) une feuille élastique (10), est mise en place sur le dessus du châssis de moulage après étaiement de l'équipement de modèle avec le support de plaque (3), et est bloquée au moyen d'un vérin hydraulique (13), que de l'air comprimé est ensuite, par l'intermédiaire d'une conduite d'alimentation (9), insufflé sur la feuille élastique (10), laquelle est alors pressée sur la surface du sable, que, dans un pulsateur (12), la pression est alternativement supprimée et reconstituée par l'ouverture et la fermeture de l'orifice de sortie d'air à l'aide d'un piston oscillant, et que les coups de souffle qui sont imprimés par cette alternance à la feuille (10), et transmis à la couche de sable (5), produisent un serrage uniforme de tous côtés du sable de moulage à vert.
3.- Procédé selon la revendication 1 pour le serrage du sable lors de l'étape de remplissage 11, caractérisé par le fait que, comme tamponnage (6), on applique par l'intermédiaire d'une tête centrifugeuse (7) fonctionnant à plein régime du sable exempt de charbon pulvérise, que le moule rempli jusqu'au-dessus du bord du châssis est ensuite, alors qu'il est dirigé vers un poste de serrage, arasé pour présenter une hauteur uniforme, et qu'il subit le serrage final par la tête de serrage (11), à l'aide du vérin hydraulique (13).
4.- Procédé selon la revendication 2 et 3, caractérisé par le fait que le châssis de moulage de dessus (4) est muni de rebords (15) qui sont maintenus par des goujons coulissants (16) et qui empêchent la chute de la balle de sable.
5.- Procédé selon la revendication 2 et 3, caractérisé par le fait qu'un ensemble de poids de charge (20) est posé sans être fixé dans un bâti extérieur (19) et assure une charge uniforme sur la balle moulée, et qu'un bâti d'étanchéité (21) est suspendu élastiquement sous le bâti (19) et assure l'étanchéité du joint de séparation entre la balle de dessus et la balle de dessous.
EP19830105691 1982-07-06 1983-06-10 Procédé pour la fabrication de pièces moulées à vert de grand format (surface des moules 1-3 m2) pour la coulée en motte Expired EP0098405B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3225197 1982-07-06
DE19823225197 DE3225197A1 (de) 1982-07-06 1982-07-06 Verfahren und einrichtung zur herstellung von nassgut-formteilen im grossformat (formflaeche (einf. wellenlinie) 1-3m(pfeil hoch)2(pfeil hoch)) zum kastenlosen giessen

Publications (2)

Publication Number Publication Date
EP0098405A1 EP0098405A1 (fr) 1984-01-18
EP0098405B1 true EP0098405B1 (fr) 1986-01-15

Family

ID=6167730

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830105691 Expired EP0098405B1 (fr) 1982-07-06 1983-06-10 Procédé pour la fabrication de pièces moulées à vert de grand format (surface des moules 1-3 m2) pour la coulée en motte

Country Status (3)

Country Link
EP (1) EP0098405B1 (fr)
JP (1) JPS5921447A (fr)
DE (1) DE3225197A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339620C1 (de) * 1983-11-02 1984-04-26 Eugen Dipl.-Ing. 8877 Burtenbach Bühler Formanlage
FR2575946A1 (fr) * 1985-01-15 1986-07-18 Fm Ind Procede et machine pour la fabrication d'un moule en sable agglomere
JPH0519509U (ja) * 1991-08-29 1993-03-12 三菱自動車工業株式会社 エンジンのオイルジエツト構造
JP4374619B2 (ja) * 2005-05-10 2009-12-02 新東工業株式会社 鋳枠無し上・下鋳型の造型方法
MX2012012696A (es) * 2010-07-23 2012-12-17 Sintokogio Ltd Un metodo de moldeo sin caja y una maquina de moldear sin caja.
US10447053B2 (en) 2016-12-27 2019-10-15 Panasonic Intellectual Property Management Co., Ltd. Terminal
CN111299502B (zh) * 2020-04-22 2021-03-19 滕州道智盛智能科技有限公司 一种覆膜砂注入系统
CN117773022B (zh) * 2023-12-31 2024-05-31 芜湖市容川机电科技股份有限公司 一种球墨铸铁消失模砂箱

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2407878C2 (de) * 1974-02-19 1975-12-18 Heinrich Wagner, Maschinenfabrik, 5928 Laasphe Kastenlose Gießform
JPS50140457U (fr) * 1975-05-07 1975-11-19
US4043376A (en) * 1976-06-16 1977-08-23 Nippon Gakki Seizo Kabushiki Kaisha Casting process by vacuum molding
JPS53142917A (en) * 1977-05-20 1978-12-13 Sintokogio Ltd Method of gate etc in pressure reduction mold molding and its device
JPS5460223A (en) * 1977-10-21 1979-05-15 Nippon Musical Instruments Mfg Blocking material for casting vacuum mold
DE3212259A1 (de) * 1981-06-19 1983-01-05 VEB Kombinat Gießereianlagenbau und Gußerzeugnisse - GISAG -, DDR 7031 Leipzig Verfahren und vorrichtung zum abstuetzen und belasten kastenloser sandformen

Also Published As

Publication number Publication date
DE3225197A1 (de) 1984-01-12
EP0098405A1 (fr) 1984-01-18
JPS5921447A (ja) 1984-02-03
JPS6159811B2 (fr) 1986-12-18

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