EP0732977B1 - Dispositif de tirage des noyaux ou des moules de fonderie - Google Patents

Dispositif de tirage des noyaux ou des moules de fonderie Download PDF

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Publication number
EP0732977B1
EP0732977B1 EP94917561A EP94917561A EP0732977B1 EP 0732977 B1 EP0732977 B1 EP 0732977B1 EP 94917561 A EP94917561 A EP 94917561A EP 94917561 A EP94917561 A EP 94917561A EP 0732977 B1 EP0732977 B1 EP 0732977B1
Authority
EP
European Patent Office
Prior art keywords
tool
shooting
cores
tool change
frames
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
EP94917561A
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German (de)
English (en)
Other versions
EP0732977A1 (fr
Inventor
Reiner Rommel
Ulf Stangier
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
Application filed by Adolf Hottinger Maschinenbau GmbH filed Critical Adolf Hottinger Maschinenbau GmbH
Publication of EP0732977A1 publication Critical patent/EP0732977A1/fr
Application granted granted Critical
Publication of EP0732977B1 publication Critical patent/EP0732977B1/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
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/02—Machines in which the moulds are moved during a cycle of successive operations
    • B22C11/04—Machines in which the moulds are moved during a cycle of successive operations by a horizontal rotary table or carrier

Definitions

  • the invention relates to a device for firing foundry cores or molds, with a firing device, a tool set comprising a tool upper part and a tool lower part and a tool changing device having two tool change frames and pivotable about a vertical axis, each of the tool change frames alternately entering and exiting the shooting device the shooting device (1) can be pivoted out.
  • Core shooters have been known in foundry technology for many years.
  • the foundry cores or molds are usually manufactured in separate parts, brought together and connected to one another to form a casting mold.
  • An essential part of the core shooters are the so-called shot heads with the shot plates carrying the shot nozzles.
  • Molding material, in particular core sand, i.e. quartz sand which has already been mixed or coated with binding agent is poured into the shot heads in question and from there it is blown or shot into the respective molds with very high air pressure through the nozzles arranged in the shot plate.
  • DE-C 3 422 687 discloses a generic device for firing foundry cores or molds, in which a tool changing device with two tool changing frames is provided which can be pivoted about a vertical axis.
  • the tool change frame is a frame in the literal sense, through the central area of which, for example, a lifting table can grip or drive through.
  • the device in question is used to change the entire tool set, i.e. for changing the tools consisting of the upper part of the tool and the lower part of the tool. It is essential that shot cores are ejected and removed before the tool change. Consequently, the known tool changing device is not used for the removal of shot cores, but only for the pure tool change without cores located therein.
  • the invention is based on the object of designing a generic device in this way and to further develop that it is possible without additional constructive measures to carry out the removal of the cores outside the actual working area of the core shooting device. It should also be possible to clean the lower part of the tool carrying the cores after ejection from the upper part of the tool - after removal of the cores. Finally, it should be possible to achieve optimal use or utilization of the device, in particular when combining shot cores with, for example, manually inserted loose parts.
  • a molding machine in which sand molds are filled in a first working step and the sand therein is compacted in a second working step.
  • the cores are in two parts and are manufactured on the one hand in an upper box shape and on the other hand in a lower box shape. Both partial cores make up the core as a whole.
  • a swivel table arrangement with diametrically opposed tables is provided, with this swivel arrangement or the tables assigned to the swivel arrangement swiveling a molding box with a corresponding model plate into a sand filling station and the other molding box with a model plate is pivotable into a sand compaction station.
  • the swivel table arrangement in question is not a tool changing device, and certainly not a tool changing device with any changing frames. Rather, a lifting table is directly assigned to the table of the swiveling table arrangement, which would not be possible in principle in the case of an interchangeable frame. On the contrary, if a removable frame is provided, it is possible to reach through the frame legs with a lifting device, which is not the case with the device in question.
  • a molding machine is known from EP-A-0 357 871, with the essential features of the device already discussed above and known from EP-A-0 327 825.
  • a swivel table arrangement - called a turntable unit - is also known there, according to which complete molded boxes can be placed on the table of the turntable unit.
  • the turntable unit can comprise a plurality of tables, it being possible to carry out predetermined operations independently of one another on each of the tables. related to the mold box as a whole - to let it run. For example, the molding sand can be compacted at one of the tables, while molding sand is poured in at the other table or a finished mold is lifted off.
  • column 2 of the description there it is possible according to column 2 of the description there to produce an upper box shape or a lower box shape on a table, so that the overall core can be assembled from the partial cores manufactured there.
  • the device according to the invention for firing foundry cores or molds achieves the above object by the features of claim 1.
  • the generic device is characterized by the use of the tool change frame pivoted into the firing device for the exclusive reception of the lower part of the tool carrying the cores, the core supporting the cores Lower tool part out of the shooting device and at the same time the other tool change frame can be pivoted into the shooting device with a tool lower part freed from the cores and cleaned.
  • the tool changing device known per se and used for the pure tool change can be used in an ideal manner to solve the above task, namely to move the core removal out of the actual operating area of the core shooting device.
  • the possibility is used in an ideal manner to eject cores from the upper tool part onto the lower lower tool part, so that the lower tool part carries the cores.
  • the lower part of the tool is then pivoted out of the operating area of the core shooting machine together with the cores, so that the cores can be removed outside the operating area of the core shooting machine.
  • the swiveled-out lower tool part - also outside the operating area of the core shooting machine - can be cleaned and can then be swiveled back into the operating area of the core shooting machine again - in the cleaned state - while at the same time removing a further core.
  • the measure allows the cycle times within the core shooter to be matched to corresponding processing times outside the core shooter.
  • the tool change frame pivoted into the operating area of the core shooting machine is used exclusively for the delivery of a cleaned tool lower part and for the subsequent reception of the tool lower part supporting the cores.
  • the device according to the invention for shooting foundry cores or molds it is essential for the device according to the invention for shooting foundry cores or molds that the lower tool part carrying the cores can be pivoted out of the shooting device by means of the tool device and, at the same time, the other tool change frame can be swiveled into the shooting device with a cleaned lower tool part around the cores.
  • the swung-out cores can be removed from the lower part of the tool and can be automatically or manually combined with any loose parts - outside the operating area of the core shooting device.
  • the lower part of the tool that has been freed of the cores can be cleaned or even - also outside the operating area of the core shooting device - occupied with any loose parts and brought into the operating area of the core shooting device together with these lot parts - for example cores shot by another core shooting device or be restricted. This process can be repeated as desired, which results in a particularly favorable cycle time for the core shooter.
  • the tool changing frames are arranged on arms that extend on both sides of the axis of rotation, preferably diametrically opposite one another. These arms could face each other exactly, i.e. cursed with each other. An angled arrangement of the arms and thus the tool change frame is also conceivable.
  • the spatial arrangement of the shooting device on the one hand and the cleaning station for the lower tool part on the other hand must be taken into account.
  • the tool change frames are constructed in such a way that they at least partially engage under the lower tool part, ie carry them in and out.
  • the lower tool part could have special support means, which are designed, for example, in the form of support pins or support pins. These support pins could be formed on two opposite sides of the lower tool part, so that the lower tool part is placed or deposited on the tool change frame.
  • the tool change frame could also be moved horizontally overall, so that the lower tool parts can also be raised and lowered at the same time. In the simplest configuration, however, the tool change frame would only be pivotable in a predetermined horizontal plane.
  • the tool change frame can be positioned in a shooting device via a first lifting table which is used to lift the lower tool part or to press it against the upper tool part arranged above and lower the lower tool part.
  • a first lifting table which is used to lift the lower tool part or to press it against the upper tool part arranged above and lower the lower tool part.
  • the lower tool part could be pivoted into the shooting device, where it could be gripped by an elevating lifting table and lifted off the tool change frame.
  • the tool change frame could remain in its position because the lifting table can act through or extend through between the frame legs.
  • the tool changing device or the swiveling tool changing frame can be positioned outside the shooting device via a second lifting table, which can be a further work station - outside the shooting device.
  • Both tool change frames could be arranged in a further advantageous manner in such a way that they can be positioned simultaneously over the two lifting tables, so that work can be carried out on both lifting tables at the same time.
  • the second lifting table located outside the core shooting device advantageously has an ejection device for ejecting the cores from the swiveled-out lower part of the tool.
  • This ejection device works between the legs of the tool change frame and is therefore in no way hindered by any equipment.
  • a device for cleaning the lower tool part could be provided in the area of the second lifting table or even assigned to the lifting table.
  • Corresponding manipulators could easily be provided, for example, above the second lifting table, and any lot parts could also be handled using manipulators.
  • the cycle time in the shooting device corresponds at least largely to the processing time on the second lifting table outside the shooting device. In contrast to a removal in the area of the shooting device, a double production quantity could thus be achieved.
  • the shooting device 1 has, as essential components, a shooting head 2 with a shooting plate 4 carrying shooting nozzles 3 with filling funnels 5 arranged above it.
  • the core sand is shot into a two-part tool, this having an upper tool part 6 and a lower tool part 7.
  • a tool changing device 8 comprises two tool changing frames 9, which are pivotable about a vertical axis 10. Each of the tool change frames 9 can be swiveled alternately into and out of the shooting device 1.
  • the tool change frame 9 pivoted into the shooting device 1 serves to collectively hold the lower tool part 7 carrying the cores 11.
  • the lower tool part 7 carrying the cores 11 is out of the shooting device 1 and at the same time the other tool changing frame 9 with a preferably cleaned lower tool part 7 into the shooting device 1 can be swiveled in. Consequently, there is a simultaneous pivoting in and out of the two tool change frames 9.
  • the single figure further shows that the tool change frames 9 are arranged on diametrically opposite arms 12 extending on both sides of the axis of rotation 10. Furthermore, it can be seen that the tool change frames 9 partially engage under the lower tool part 7, namely under the support pins 13 used to place the tool change frames 9. These receiving pins 13 are formed on two opposite sides of the lower tool part 7. Only one side can be seen here.
  • the tool changing device 8 in the embodiment selected here can be pivoted through 180 °, specifically in a horizontal plane.
  • the tool change frame 9 can be positioned in the shooting device 1 via a first lifting table 14 which serves to lift the lower tool part 7 and to press against the upper tool part 6 arranged above it and to lower the lower tool part 7.
  • This lifting table 14 is equipped with a suction device.
  • the tool change frame 9 can be positioned outside the shooting device 1 above a second lifting table 15.
  • both tool change frames 9 are arranged with respect to one another in such a way that they can be positioned simultaneously over the two lifting tables 14, 15 or are arranged in the position there.
  • the second lifting table 15 forms a further processing station, namely has an ejection device for ejecting the cores 11 from the Lower tool part 7. Furthermore, in the area of the second lifting table 15, a device (not shown in the single figure) for cleaning the lower tool part 7 is provided.
  • the cycle time in the shooting device 1 corresponds to the processing time on the second lifting table 15 - outside the shooting device 1 - so that the production of the cores 11 is optimally designed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

Dispositif de tirage des noyaux ou des moules de fonderie, comprenant un système de tirage (1), un jeu d'outils présentant une section supérieure (6) et une section inférieure (7) et un dispositif de changement d'outils (8) monté pivotant autour d'un axe vertical (10), présentant deux châssis de changement d'outils (8), chacun des châssis étant susceptible de pivoter alternativement vers l'intérieur, ou vers l'extérieur, du système de tirage (1), caractérisé en ce que, en vue d'obtenir une utilisation ou une charge optimale, le châssis de changement d'outils (8) pivotant dans le système de tirage (1) est utilisé pour recevoir la section inférieure (7) porteuse des noyaux (11), et en ce que ladite section inférieure (7) portant les noyaux (11) est susceptible de pivoter à l'extérieur du système de tirage (1), et en ce qu'en même temps, l'autre châssis de changement d'outils (9) est susceptible de pivoter vers l'intérieur du système de tirage (1), avec une section inférieure (7) de préférence nettoyée.

Claims (12)

  1. Dispositif de tirage de noyaux ou de moules de fonderie, avec une installation de tirage (1), avec un jeu d'outils présentant un élément d'outil supérieur (6) et un élément d'outil inférieur (7) et avec une installation de changement d'outil (8) pouvant pivoter autour d'un axe vertical (10), installation de changement d'outil présentant deux châssis de changement d'outil (9), dont chacun peut en alternance être pivoté pour entrer dans l'installation de tirage (1) ou être pivoté pour en sortir,
    caractérisé en ce que le châssis de changement d'outil (9) qui est pivoté dans l'installation de tirage sert exclusivement à recevoir l'élément d'outil inférieur (7) portant les noyaux (11), l'élément d'outil inférieur (7) portant les noyaux (7) pouvant être pivoté hors de l'installation de tirage (1) tandis que simultanément l'autre châssis de changement d'outil (9) avec un élément d'outil inférieur (7) débarrassé des noyaux (11) et nettoyé peut être pivoté dans l'installation de tirage (1).
  2. Dispositif suivant la revendication 1, caractérisé en ce que les châssis de changement d'outil (9) sont disposés sur des bras diamétralement opposés (12) issus de part et d'autre de l'axe de rotation (10).
  3. Dispositif suivant la revendication 1 ou 2, caractérisé en ce que les châssis de changement d'outil (9) enserrent au moins partiellement par le dessous l'élément d'outil inférieur (7).
  4. Dispositif suivant la revendication 3, caractérisé en ce que l'élément d'outil inférieur (7) présente des moyens de montage disposés sur les châssis de changement d'outil (9) de préférence sous forme de goujons (13), moyens qui sont formés de préférence de deux côtés opposés de l'élément d'outil inférieur (7).
  5. Dispositif suivant l'une quelconque des revendications de 1 à 4, caractérisé en ce que l'installation de changement d'outil (8) peut pivoter de 180°.
  6. Dispositif suivant l'une quelconque des revendications de 1 à 4, caractérisé en ce que l'installation de changement d'outil (8) peut pivoter de 360°, c'est-à-dire sans limitation.
  7. Dispositif suivant l'une quelconque des revendications de 1 à 6, caractérisé en ce que les châssis de changement d'outil (9) peuvent pivoter dans un plan horizontal.
  8. Dispositif suivant l'une quelconque des revendications de 1 à 7, caractérisé en ce que le châssis de changement d'outil (9) situé dans l'installation de tirage (1) peut être positionné à l'aide d'une première table de levage (14), aux fins de soulever l'élément d'outil inférieur (9) ou aux fins de son application sous pression contre l'élément d'outil supérieur (6) disposé au-dessus et aux fins de la descente de l'élément d'outil inférieur (7).
  9. Dispositif suivant l'une quelconque des revendications de 1 à 8, caractérisé en ce que le châssis de changement d'outil (9) situé à l'extérieur de l'installation de tirage (1) peut être positionné au moyen d'une deuxième table de levage (15) qui présente le cas échéant un dispositif d'expulsion pour expulser les noyaux hors de l'élément d'outil inférieur (7).
  10. Dispositif suivant la revendication 8 ou 9, caractérisé en ce que les châssis de changement d'outil (9) sont disposés l'un par rapport à l'autre de manière telle qu'ils peuvent être positionnés simultanément à l'aide des deux tables de levage (14, 15).
  11. Dispositif suivant la revendication 9 ou 10, caractérisé en ce que dans la région de la deuxième table de levage (15) est prévue une installation pour le nettoyage de l'élément d'outil inférieur (7).
  12. Dispositif suivant l'une quelconque des revendications de 1 à 11, caractérisé en ce que la cadence de l'installation de tirage (1) correspond au moins dans une large mesure à la durée d'usinage sur la deuxième table de levage (15) à l'extérieur de l'installation de tirage (1).
EP94917561A 1993-12-11 1994-06-17 Dispositif de tirage des noyaux ou des moules de fonderie Expired - Lifetime EP0732977B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4342364 1993-12-11
DE4342364A DE4342364C1 (de) 1993-12-11 1993-12-11 Vorrichtung zum Schießen von Gießereikernen oder -formen
PCT/DE1994/000690 WO1995015826A1 (fr) 1993-12-11 1994-06-17 Dispositif de tirage des noyaux ou des moules de fonderie

Publications (2)

Publication Number Publication Date
EP0732977A1 EP0732977A1 (fr) 1996-09-25
EP0732977B1 true EP0732977B1 (fr) 1997-10-01

Family

ID=6504810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94917561A Expired - Lifetime EP0732977B1 (fr) 1993-12-11 1994-06-17 Dispositif de tirage des noyaux ou des moules de fonderie

Country Status (5)

Country Link
US (1) US5701946A (fr)
EP (1) EP0732977B1 (fr)
DE (2) DE4342364C1 (fr)
ES (1) ES2108461T3 (fr)
WO (1) WO1995015826A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4434798A1 (de) * 1993-10-14 1995-05-11 Georg Fischer Giesereianlagen Kern- und Maskenschiessmaschine
ID30333A (id) * 2000-02-17 2001-11-22 Sintokogio Ltd Peralatan dan metode pemasukan pasir cetakan
CN104117637B (zh) * 2014-08-19 2016-04-13 苏州明志科技有限公司 一种上压型制芯机射砂机构的压头装置
CN104525875A (zh) * 2014-12-23 2015-04-22 河北欧耐机械模具有限公司 伺服控制高速多工位制芯机
CN109226663B (zh) * 2018-11-28 2020-12-04 韶关市新世科壳型铸造有限公司 一种利用高流动性高熔点覆膜砂制作大型壳型壳芯的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH320426A (de) * 1952-07-21 1957-03-31 Buderus Eisenwerk Einrichtung zur Herstellung von Giesssandformen
IT1111713B (it) * 1979-03-12 1986-01-13 Hansberg Julius Foramtrice a sparo e compressione in staffe
DE3422687C1 (de) * 1984-06-19 1985-06-13 Adolf Hottinger, Gießerei und Maschinenbau GmbH, 6800 Mannheim Kern- und Maskenschiessmaschine
CH666426A5 (de) * 1984-06-25 1988-07-29 Fischer Ag Georg Formanlage.
DE8817084U1 (de) * 1988-02-06 1992-08-13 Heinrich Wagner Sinto Maschinenfabrik GmbH, 5928 Bad Laasphe Formmaschine
DE8817014U1 (de) * 1988-09-07 1991-11-21 Heinrich Wagner Sinto Maschinenfabrik GmbH, 5928 Bad Laasphe Formmaschine
ES2011685A6 (es) * 1988-10-21 1990-02-01 Lopez Foronda Fernandez Vicent Mejoras introducidas en maquinas de moldeo por impacto de aire.

Also Published As

Publication number Publication date
WO1995015826A1 (fr) 1995-06-15
EP0732977A1 (fr) 1996-09-25
DE59404234D1 (de) 1997-11-06
ES2108461T3 (es) 1997-12-16
US5701946A (en) 1997-12-30
DE4342364C1 (de) 1994-10-13

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