EP0731741B1 - Dispositif et procede pour la fabrication de carapaces ou paquets de noyaux de fonderie prets a l'emploi - Google Patents

Dispositif et procede pour la fabrication de carapaces ou paquets de noyaux de fonderie prets a l'emploi Download PDF

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Publication number
EP0731741B1
EP0731741B1 EP95902034A EP95902034A EP0731741B1 EP 0731741 B1 EP0731741 B1 EP 0731741B1 EP 95902034 A EP95902034 A EP 95902034A EP 95902034 A EP95902034 A EP 95902034A EP 0731741 B1 EP0731741 B1 EP 0731741B1
Authority
EP
European Patent Office
Prior art keywords
core
tool
tools
tool set
transfer
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
EP95902034A
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German (de)
English (en)
Other versions
EP0731741A1 (fr
Inventor
Werner Landua
Werner Pichler
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.)
Adolf Hottinger Maschinenbau GmbH
Original Assignee
Adolf Hottinger Maschinenbau 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
Priority claimed from DE19934341122 external-priority patent/DE4341122C2/de
Application filed by Adolf Hottinger Maschinenbau GmbH filed Critical Adolf Hottinger Maschinenbau GmbH
Publication of EP0731741A1 publication Critical patent/EP0731741A1/fr
Application granted granted Critical
Publication of EP0731741B1 publication Critical patent/EP0731741B1/fr
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
    • B22C15/23—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C13/00—Moulding machines for making moulds or cores of particular shapes
    • B22C13/08—Moulding machines for making moulds or cores of particular shapes for shell moulds or shell cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/103—Multipart cores

Definitions

  • the invention relates to a device for producing ready-to-cast masks or core packages, with at least two linearly arranged core shooting machines or shooting stations, wherein the core shooting machines have two tool sets, each consisting of an upper part and a lower part, which differ at least slightly, and identical transfer parts, on the one hand, as a lower part of the first core shooting machine and on the other hand, to transport the core or core package on a transfer path through the device. Furthermore, the invention relates to a method for producing ready-to-cast masks or core packages with a device according to the invention.
  • the present invention relates to the field of foundry technology.
  • foundry cores or molds are usually produced in separate parts, brought together and connected to one another to form a mold or core package.
  • These core packages are then filled with molten metal to produce, for example, a metallic workpiece, the series of core packages to be filled with molten metal passing through the production line one after the other.
  • Devices for producing core packages of the type in question are already known from numerous publications. Reference is made to DE-OS 23 04 564 only by way of example. It is also known from practice to manufacture the cores to be connected to form a core package in a production line with a plurality of core shooting machines or shooting stations, the core package being added to each shooting station Core is supplemented. For this purpose, the cores are placed on a transfer part passing through the individual shooting stations, this transfer part mostly serving at the same time as the lower tool part of the first shooting station.
  • the core sands used to manufacture the core packages are always mixed with binding agents, which means that the tools - upper and lower parts of the tools - are heavily contaminated. Accordingly, the tools have to be cleaned after a certain number of cycles and replaced at the shooting stations.
  • a tool change is extremely problematic in practice, since the tools of the individual shooting stations and thus the cores manufactured there are exactly matched to one another.
  • the contours of the cores of a tool set to be stacked are coordinated with one another in such a way that they lie positively against one another during stacking. If there were even the slightest deviations in the contours of the surfaces of the cores to be stacked, such tensions would occur during stacking that the cores would break with the greatest probability.
  • German patent application P 43 18 259.3-24 - this is a post-published state of the art - according to which the tools of a tool set are used jointly, ie simultaneously , can be exchanged for tools from a second tool set at all shooting stations.
  • each core shooting machine is assigned at least one parking station for the transfer part with the cores located thereon and that the parking station for receiving a tool that can be removed from the transfer path when the tool is changed for the first time and returned to the tool when it is changed again
  • Transfer path insertable transfer part is used so that there are only transfer parts carrying cores or core packages made with the tool set in use and in the parking stations only transfer parts carrying cores or core packages made with the tool set not in use.
  • a parking station for the transfer part is assigned to each core shooter in the alternative device, so that during a first tool change - change to the second tool set - the cores or core packages located at the respective shooting stations - instead of being disposed of - are brought into the parking station . Only when the tool is changed for the first time is the production line restarted in the empty state. If, on the other hand, a previously replaced and cleaned tool set is replaced again, the cores or transfer parts with the cores located on the production line are then brought into the parking station and the parked cores, with the cleaned and now replaceable tool set, are previously manufactured can be slid back into the transfer path at appropriate points.
  • the transfer path contains only transfer parts carrying cores or core packages made with the tool set in use and transfer parts made with core or core packages carrying the tool set not in use are located in the parking stations. Due to the trick of replacing the cores or core packages manufactured with the corresponding tool set, it is not necessary to restart the production line after changing the tool set. Rather, with the tool set being replaced again, production can be continued exactly where it was interrupted for the purpose of changing. Consequently, with the alternative device, the production is only interrupted until the tool set on the one hand and the transfer parts on the other hand have been changed.
  • the present invention is therefore based on the object of specifying a device of the type mentioned at the outset and a corresponding method, according to which reject cores caused by the tool change and start-up times for "filling" the production line with the simplest construction and minimum space requirement are effectively avoided.
  • the device according to the invention achieves the above object by the features of claim 1. Thereafter, the device according to the invention is designed such that the tools in use of a first tool set can be exchanged for tools of a second tool set on the first core shooting machine, namely after the transfer part with the the first core has left the first core shooting station, that the tools in use in the first tool set can be exchanged for tools of the second tool set on the second core shooting machine after the transfer part with the first and second core has left the second core shooting station, etc., to change of the last tool set at the last core shooting station, so that only the core made with the same tool set can be deposited on a transfer part.
  • the problem of exchanging tool sets can be solved without provision of parking stations for transfer parts to be discharged with cores located thereon, namely in that the tools in use at the various core shooting stations are not exchanged at the same time but at different times. Consequently, in the manner according to the invention, a transfer part carrying a first core is run through all the shooting stations and completed to form a core package. After passing through the respective core shooting station, the respective tool or the respective tool set is then exchanged, so that the subsequent transfer part only carries cores which have already been produced with the replaced tool set. A transfer of transfer parts with cores located on them is therefore superfluous, so that no special parking stations for the transfer parts with the cores located thereon are required.
  • a transfer part covered with a first core is occupied or completed at each core shooting station with further cores that are manufactured with tools from the same tool set.
  • the tool of the tool set to be changed is only exchanged for a tool of the other tool set when the core required for the packaging has been produced and stacked on the transfer part or the other cores.
  • the transfer path extending linearly through the shooting stations is formed by the rollers carrying the transfer parts.
  • the rollers can reach under the transfer parts or corresponding overhangs of the transfer parts from the side.
  • the method according to the invention achieves the above object by the features of claim 5.
  • This is a method for producing ready-to-cast masks or core packages, a first core being shot at a first core shooting station and on the transfer part serving as the lower tool part of the first core shooting machine spent at the next shooting station, a second core shot at a second core shooting station, the lower tool part of the second shooting station lowered, the transfer part with the first core placed under the upper tool part of the second shooting station and the second core placed on the first core located on the transfer part, etc.
  • the following further method steps are provided according to the invention:
  • the tools in use of a first tool set are exchanged for tools of a second tool set on the first core shooting machine after the transfer part with the first core has left the first core shooting station.
  • the tools in use in the first tool set are then exchanged for tools in the second tool set on the second core shooting machine after the transfer part with the first and second core has left the second core shooting station. This process is repeated in accordance with the total number of core shooting stations provided, namely until the last tool set at the last core shooting station is changed, so that only cores which are produced with tools of the same tool set are placed on a transfer part.
  • the single figure shows a linearly arranged core shooting system with a total of eight core shooting machines 1 or shooting stations, the core shooting machines 1 having two tool sets 4, each consisting of an upper tool part 2 and a lower tool part 3, and at least slightly different, and identical transfer parts 5 on the one hand as a lower tool part 2 of the first core shooting machine 1 and on the other hand serve as for transporting the core 6 or core package on a transfer path 7 through the device.
  • the tools 2, 3 in use of a first tool set 4a are exchanged here for tools 2, 3 of a second tool set 4b on the first core shooting machine 1, specifically after the transfer part 5 with the first core 6 has left the first core shooting station.
  • the tools 2, 3 of the first tool set 4a in use are then exchanged for tools 2, 3 of the second tool set 4b on the second core shooting machine 1, specifically also after the transfer part 5 with the first and second core 6 leaves the second core shooting station Has.
  • This process is repeated up to the last core shooting station, namely until the tools 2, 3 of the tool set 4 to be exchanged are changed at the last core shooting station, so that cores 6 manufactured exclusively with the same tool set 4 can be deposited on a transfer part 5.

Abstract

Un dispositif de fabrication de carapaces ou paquets de noyaux de fonderie prêts à l'emploi, comportant au moins deux machines ou stations de tir de noyaux (1) disposées linéairement, ces machines (1) présentant deux jeux d'outils (4), au moins légèrement différents, composés chacun d'un outil supérieur (2) et d'un outil inférieur (3). Des éléments de transfert identiques (5) servent d'une part d'outil inférieur (2) pour la première machine à tirer les noyaux (1) et d'autre part au transport du noyau (6) ou du paquet de noyaux sur une voie de transfert (7) à travers le dispositif. Pour diminuer l'encombrement, tout en ayant un dispositif de construction très simple, les outils utilisés (2, 3) du premier jeux d'outils (4) peuvent être remplacés par les outils (2, 3) du second jeu (4) sur la première machine (1) après que l'élément de transfert (5) avec le premier noyau (6) ait quitté la première station de tir de noyaux, et les outils utilisés (2, 3) du premier jeu d'outils (4) peuvent être remplacés par ceux (2, 3) du second jeu (4) sur la deuxième machine (1) après que l'élément de transfert (5) ait quitté la deuxième station avec le premier et le deuxième noyau (6), etc, jusqu'à ce que les outils (2, 3) du jeu d'outils (4) de la dernière station aient été remplacés, de sorte que ne peuvent être déposés sur un élément de transfert (5) que les noyaux (6) fabriqués au moyen du même jeux d'outils (4). Un procédé correspondant est également décrit.

Claims (5)

  1. Dispositif pour la fabrication de carapaces ou paquets de noyaux prêts à l'emploi, avec au moins deux machines à tirer les noyaux (1) ou postes de tirage disposés en ligne, les machines à tirer les noyaux (1) présentant chacune deux jeux d'outils (4a, 4b) au moins légèrement différents l'un de l'autre, constitués chacun d'une partie supérieure d'outil (2) et d'une partie inférieure d'outil (3), tandis que des éléments de transfert (5) identiques d'une part font fonction de partie inférieure d'outil (2) de la première machine à tirer les noyaux (1) et d'autre part servent au transport du noyau (6) ou du paquet de noyaux sur un itinéraire de transfert (7) au travers le dispositif ,
    caractérisé en ce que les outils (2, 3) utilisés d'un premier jeu d'outils (4a) peuvent être remplacés par des outils (2, 3) d'un deuxième jeu d'outils (4b) sur la première machine à tirer les noyaux (1), et cela après que l'élément de transfert (5) avec le premier noyau (6) ait quitté le premier poste de tirage de noyaux, en ce que les outils (2, 3) utilisés du premier jeu d'outils (4a) peuvent être remplacés par des outils (2, 3) du deuxième jeu d'outils (4b) sur la deuxième machine à tirer les noyaux (1), après que l'élément de transfert (5) avec le premier et le deuxième noyau (6) ait quitté le deuxième poste de tirage de noyaux, et ainsi de suite jusqu'au remplacement des outils (2, 3) du jeu d'outils (4) à remplacer sur le dernier poste de tirage de noyaux, de telle sorte que sur un même élément de transfert (5) peuvent être déposés uniquement des noyaux fabriques avec le même jeu d'outils (4).
  2. Dispositif suivant la revendication 1, caractérisé en ce que l'itinéraire de transfert (7) disposé de manière linéaire au travers les postes de tirage (1) est formé par des rouleaux portant les éléments de transfert (5).
  3. Dispositif suivant la revendication 1 ou 2, caractérisé en ce que les rouleaux soutiennent latéralement les éléments de transfert (5) ou des portions en saillie correspondantes des éléments de transfert (5).
  4. Dispositif suivant l'une quelconque des revendications de 1 à 3, caractérisé en ce qu'un ensemble de huit machines à tirer les noyaux (1) ou postes de tirage avec les jeux d'outils (4a, 4b) et les éléments de transfert (5) associés est prévu.
  5. Procédé pour la fabrication de carapaces ou paquets de noyaux prêts à l'emploi, où dans un premier poste de tirage de noyaux est tiré un premier noyau (6) qui sur l'élément de transfert (5) servant de partie d'outil inférieure (2) de la première machine à tirer des noyaux (1) est transféré vers le poste de tirage suivant, où dans un deuxième poste de tirage de noyaux est tiré un deuxième noyau (6), où l'élément de transfert (5) avec le premier noyau (6) est transporté sous la partie d'outil supérieure (2) du deuxième poste de tirage, où le deuxième noyau (6) est déposé sur le premier noyau (6) se trouvant sur l'élément de transfert (5), et ainsi de suite, notamment avec l'utilisation d'un dispositif suivant l'une quelconque des revendications de 1 à 4,
    caractérisé par les étapes opératoires supplémentaires suivantes:
    - le remplacement des outils (2, 3) utilisés d'un premier jeu d'outils (4a) par des outils (2, 3) d'un deuxième jeu d'outils (4b) sur la première machine à tirer les noyaux (1), après que l'élément de transfert (5) avec le premier noyau (6) ait quitté le premier poste de tirage de noyaux;
    - le remplacement des outils (2, 3) utilisés du premier jeu d'outils (4a) par des outils (2, 3) du deuxième jeu d'outils (4b) sur la deuxième machine à tirer les noyaux (1), après que l'élément de transfert (5) avec le premier et le deuxième noyau (6) ait quitté le de tirage poste de tirage de noyaux; et ainsi de suite jusqu'au remplacement des outils (2, 3) du jeu d'outils (4) à remplacer sur le dernier poste de tirage de noyaux, de telle sorte que sur un même élément de transfert (5) sont déposés uniquement des noyaux fabriques avec l'outil (2, 3) du même jeu d'outils (4).
EP95902034A 1993-12-03 1994-12-01 Dispositif et procede pour la fabrication de carapaces ou paquets de noyaux de fonderie prets a l'emploi Expired - Lifetime EP0731741B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4341122 1993-12-03
DE19934341122 DE4341122C2 (de) 1993-06-02 1993-12-03 Vorrichtung und Verfahren zur Herstellung gießfertiger Masken bzw. Kernpakete
PCT/DE1994/001421 WO1995015231A1 (fr) 1993-12-03 1994-12-01 Dispositif et procede pour la fabrication de carapaces ou paquets de noyaux de fonderie prets a l'emploi

Publications (2)

Publication Number Publication Date
EP0731741A1 EP0731741A1 (fr) 1996-09-18
EP0731741B1 true EP0731741B1 (fr) 1997-07-16

Family

ID=6504033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95902034A Expired - Lifetime EP0731741B1 (fr) 1993-12-03 1994-12-01 Dispositif et procede pour la fabrication de carapaces ou paquets de noyaux de fonderie prets a l'emploi

Country Status (7)

Country Link
US (1) US5711361A (fr)
EP (1) EP0731741B1 (fr)
JP (1) JP2977094B2 (fr)
CA (1) CA2174551C (fr)
DE (1) DE59403412D1 (fr)
ES (1) ES2105875T3 (fr)
WO (1) WO1995015231A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19534984C1 (de) * 1995-09-20 1996-08-14 Adolf Hottinger Kg Verfahren zur Qualitätskontrolle in Kern- oder Maskenschießmaschinen und Vorrichtung zum Kern- oder Maskenschießen
DE19535337C2 (de) 1995-09-22 1999-05-20 Adolf Hottinger Kg Verfahren zur Qualitätskontrolle bei der Herstellung gießfertiger Masken oder Kernpakete
ES2155701T3 (es) * 1996-11-04 2001-05-16 Hottinger Maschb Gmbh Dispositivo y procedimiento para la fabricacion de matrices o paquetes de machos listos para fundir.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2304564A1 (de) * 1973-01-31 1974-08-08 Cobomat Apparatebau Gmbh Vorrichtung zur automatischen herstellung von formen und kernen fuer giessereizwecke
US4100961A (en) * 1976-11-18 1978-07-18 Acme-Cleveland Corporation Foundry molding machine
DE3405420A1 (de) * 1983-11-08 1985-05-15 Rheinische Maschinenfabrik & Eisengiesserei Anton Röper GmbH & Co KG, 4060 Viersen Vorrichtung zum wechseln von werkzeugen in giessereimaschinen
DE3422687C1 (de) * 1984-06-19 1985-06-13 Adolf Hottinger, Gießerei und Maschinenbau GmbH, 6800 Mannheim Kern- und Maskenschiessmaschine
US4832108A (en) * 1987-04-02 1989-05-23 Robert Corporation Method and apparatus for handling tooling within a foundry machine
US4757855A (en) * 1987-04-02 1988-07-19 Roberts Corporation Method and apparatus for loading and unloading tooling from a foundry machine
US5072775A (en) * 1988-07-18 1991-12-17 Equipment Merchants International, Inc. Core blowing machine
FR2643579B1 (fr) * 1989-02-24 1993-12-31 Kuhn Sa Machine a tirer des noyaux de fonderie
DE4006176A1 (de) * 1990-02-28 1991-09-05 Hottinger Adolf Masch Verfahren und vorrichtung zum herstellen von kernen fuer giessereizwecke
DE4318259C1 (de) * 1993-06-02 1994-02-17 Hottinger Adolf Masch Vorrichtung und Verfahren zur Herstellung gießfertiger Masken bzw. Kernpakete
DE4334857C1 (de) * 1993-10-13 1994-10-13 Hottinger Adolf Masch Vorrichtung zum Kernpaketieren

Also Published As

Publication number Publication date
CA2174551A1 (fr) 1995-06-08
JPH09500061A (ja) 1997-01-07
CA2174551C (fr) 2000-04-25
DE59403412D1 (de) 1997-08-21
US5711361A (en) 1998-01-27
EP0731741A1 (fr) 1996-09-18
ES2105875T3 (es) 1997-10-16
JP2977094B2 (ja) 1999-11-10
WO1995015231A1 (fr) 1995-06-08

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