EP0284967A2 - Device for changing the blowing head and/or the blowing plate of a core and shell mould shooting machine - Google Patents

Device for changing the blowing head and/or the blowing plate of a core and shell mould shooting machine Download PDF

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Publication number
EP0284967A2
EP0284967A2 EP88104595A EP88104595A EP0284967A2 EP 0284967 A2 EP0284967 A2 EP 0284967A2 EP 88104595 A EP88104595 A EP 88104595A EP 88104595 A EP88104595 A EP 88104595A EP 0284967 A2 EP0284967 A2 EP 0284967A2
Authority
EP
European Patent Office
Prior art keywords
blowing
changing
core
hood
nozzle plate
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.)
Granted
Application number
EP88104595A
Other languages
German (de)
French (fr)
Other versions
EP0284967B1 (en
EP0284967A3 (en
Inventor
Werner Landua
Reiner Rommel
Jürgen Müller
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 EP0284967A2 publication Critical patent/EP0284967A2/en
Publication of EP0284967A3 publication Critical patent/EP0284967A3/en
Application granted granted Critical
Publication of EP0284967B1 publication Critical patent/EP0284967B1/en
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

Definitions

  • the invention relates to a device for changing the complete firing hood and / or the nozzle plate and for removing the residual sand from the firing hood on core and mask shooting machines.
  • the replacement of the firing hood or the nozzle plate is largely carried out in the machine above the tool carrier. This will contaminate the machine. Accessibility is not optimal and only hoists, forklifts etc. can be used as aids. The time required is very large, the machine must be shut down for a long time.
  • the object of the invention is to improve the workflow on a core and mask shooting machine with regard to changing the firing hood and / or the nozzle plate in a substantial manner while simultaneously emptying the residual sand from the firing hood.
  • the device consists of a boom which can be pivoted about a vertical axis, with a built-up lifting unit with two bearing points and a mechanical reversing gear with reversing coupling for receiving and rotating the shot cap connected to the nozzle plate around a theoretical horizontal axis.
  • the device according to the invention for the rapid replacement of the firing hood and / or nozzle plate is particularly suitable in connection with a modern core and mask shooting machine which is equipped with a quick tool changing device. The remaining sand from the change is removed from the firing hood before the nozzle plate is released.
  • the level of sand in the magazine is stopped by a level probe in the firing unit before the changing process or the shooting unit is shot empty by an additional firing process.
  • the changing device is swung in below the extended shooting unit and the lifting unit is raised to its end position. Then there is a decoupling with the firing hood and nozzle plate connected by the firing unit.
  • the lifting unit with the firing hood moves downwards and swivels around a horizontal axis to empty the remaining sand and then be turned back and raised again.
  • the shooting hood is attached to the shooting unit, the nozzle plate is separated from the shooting hood and the nozzle plate is replaced by the same device.
  • the changing device 1 consists of a boom 4 pivotable about a vertical axis 14 with the pneumatically or hydraulically actuated lifting unit or the lifting station 5, which is equipped with two bearing points 6 and a reversing gear 7 with a reversing coupling 8. Parallel to changing the tools or the end of the shift, the shooting unit 9 is pivoted out of the machine or moved out, as described in DE-PS 3 148 461.
  • the device 1 is mechanically or manually swung in and extended below the opened shooting unit 9.
  • the nozzle plate 2 is equipped with two bearing journals 11 and a coupling piece 12. When opening or when the end position of the lifting unit 5 is reached, the two bearing pins 11 lie in the two bearing points 6 and the two coupling pieces 8, 12 move parallel to one another.
  • the lifting device 5 moves off with the shooting hood 10 lying thereon.
  • the reversing gear 7 can now turn the complete firing hood 10 about a horizontal axis 15, so that the remaining sand therein can be emptied into the container 3 (FIGS. 1, 3 and 4).
  • the lifting unit 5 is raised. Then the shooting hood 10 can be mechanically fastened again to the shooting unit 9 and then the nozzle plate 2 can be replaced. The same device 1 is used for this, only the reversing gear 7 is inactive.
  • the alternative replacement also applies to changing the nozzle plate 2.
  • the mechanical connections between the nozzle plate 2 and the firing hood 10 are released, the lifting unit 5 with the nozzle plate 2 lying thereon is moved down. After the device 1 has been pivoted away horizontally, away from the firing unit 9, access to the nozzle plate 2 is ensured.
  • the nozzle plate 2 can be exchanged for a new one (FIGS. 2 and 6).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Soil Working Implements (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The invention relates to a device for changing the blowing head and/or the blowing plate and for removing the residual sand from the blowing head of a core and shell mould shooting machine and consists of a cantilever pivotable about a vertical axis and having a built-on lifting unit with two bearings and a mechanical turnover drive with a turnover coupling for receiving and rotating the blowing head connected to the blowing plate about a theoretical horizontal axis. The blowing head is equipped with two bearing journals for engagement in the bearings and with a coupling piece. The device according to the invention considerably improves the workflow of a core and shell mould shooting machine as regards the changing of the blowing head and/or of the blowing plate, with simultaneous emptying of the residual sand.

Description

Die Erfindung betrifft eine Vorrichtung zum Wech­seln der kompletten Schußhaube und/oder der Düsenplatte und zum Entfernen des Restsandes aus der Schußhaube an Kern- und Maskenschießmaschinen.The invention relates to a device for changing the complete firing hood and / or the nozzle plate and for removing the residual sand from the firing hood on core and mask shooting machines.

Der Wechsel der Schußhaube bzw. der Düsen­platte wird weitgehend in der Maschine über dem Werk­zeugträger durchgeführt. Dadurch wird die Maschine verunreinigt. Die Zugänglichkeit ist nicht optimal und als Hilfsmittel können nur Hebezeuge, Gabel­stapler etc. eingesetzt werden. Der zeitliche Auf­wand ist sehr groß, die Maschine muß lange still­gelegt werden.The replacement of the firing hood or the nozzle plate is largely carried out in the machine above the tool carrier. This will contaminate the machine. Accessibility is not optimal and only hoists, forklifts etc. can be used as aids. The time required is very large, the machine must be shut down for a long time.

Die Aufgabe der Erfindung besteht darin, den Arbeitsablauf an einer Kern- und Maskenschießmaschine hinsichtlich des Wechsels der Schußhaube und/oder der Düsenplatte in wesentlicher Weise zu verbessern unter gleichzeitiger Entleerung des Restsandes aus der Schußhaube.The object of the invention is to improve the workflow on a core and mask shooting machine with regard to changing the firing hood and / or the nozzle plate in a substantial manner while simultaneously emptying the residual sand from the firing hood.

Die Lösung dieser Aufgabe wird durch die tech­nische Lehre vermittelt, daß die Vorrichtung aus einem um eine vertikale Achse schwenkbaren Ausleger mit einem aufgebauten Hubaggregat mit zwei Lagerstellen und einem mechanischen Wendetrieb mit Wendekupplung zur Aufnahme und zum Drehen der mit der Düsenplatte verbundenen Schußhaube um eine theoretische horizon­tale Achse besteht.The solution to this problem is conveyed by the technical teaching that the device consists of a boom which can be pivoted about a vertical axis, with a built-up lifting unit with two bearing points and a mechanical reversing gear with reversing coupling for receiving and rotating the shot cap connected to the nozzle plate around a theoretical horizontal axis.

Die erfindungsgemäße Vorrichtung für den schnellen Schußhauben- und/oder Düsenplattenwechsel eignet sich besonders in Verbindung mit einer modernen Kern- und Maskenschießmaschine, die mit einer schnellen Werkzeugwechselvorrichtung ausgerüstet ist. Der beim Wechsel anfallende Restsand wird vor dem Lösen der Düsenplatte aus der Schußhaube entfernt.The device according to the invention for the rapid replacement of the firing hood and / or nozzle plate is particularly suitable in connection with a modern core and mask shooting machine which is equipped with a quick tool changing device. The remaining sand from the change is removed from the firing hood before the nozzle plate is released.

Über eine Niveausonde im Schießaggregat wird vor dem Wechselvorgang der Sandnachlauf ins Magazin abgestoppt bzw. durch einen zusätzlichen Schuß­vorgang das Schießaggregat leergeschossen.The level of sand in the magazine is stopped by a level probe in the firing unit before the changing process or the shooting unit is shot empty by an additional firing process.

Danach wird die Wechselvorrichtung unterhalb des ausgefahrenen Schießaggregats eingeschwenkt und das Hubaggregat hochgefahren bis in seine Endstellung. Dann erfolgt eine Entkupplung mit der vom Schieß­aggregat verbundenen Schußhaube samt Düsenplatte. Das Hubaggregat mit der Schußhaube fährt nach unten ab und schwenkt um eine horizontale Achse zum Ausleeren des Restsandes, um anschließend wieder zurückgedreht und angehoben zu werden. Die Schußhaube wird am Schießaggregat befestigt, die Düsenplatte von der Schußhaube getrennt und die Düsenplatte mittels der gleichen Vorrichtung ausgetauscht.Then the changing device is swung in below the extended shooting unit and the lifting unit is raised to its end position. Then there is a decoupling with the firing hood and nozzle plate connected by the firing unit. The lifting unit with the firing hood moves downwards and swivels around a horizontal axis to empty the remaining sand and then be turned back and raised again. The shooting hood is attached to the shooting unit, the nozzle plate is separated from the shooting hood and the nozzle plate is replaced by the same device.

In der Zeichnung ist in Verbindung mit der Be­schreibung eine Ausführungsform der Erfindung erläutert:In the drawing, an embodiment of the invention is explained in connection with the description:

Die Wechselvorrichtung 1 besteht aus einem um eine vertikale Achse 14 schwenkbaren Ausleger 4 mit dem pneumatisch oder hydraulisch zu betätigenden Hub­aggregat bzw. der Hubstation 5, die mit zwei Lager­stellen 6 und einem Wendetrieb 7 mit Wendekupplung 8 ausgerüstet ist. Parallel zum Wechseln der Werkzeuge oder zum Schichtende wird das Schießaggregat 9 aus der Maschine herausgeschwenkt oder herausgefahren, wie es in der DE-PS 3 148 461 beschrieben ist.The changing device 1 consists of a boom 4 pivotable about a vertical axis 14 with the pneumatically or hydraulically actuated lifting unit or the lifting station 5, which is equipped with two bearing points 6 and a reversing gear 7 with a reversing coupling 8. Parallel to changing the tools or the end of the shift, the shooting unit 9 is pivoted out of the machine or moved out, as described in DE-PS 3 148 461.

Die Vorrichtung 1 wird unterhalb des aufge­fahrenen Schießaggregats 9 mechanisch oder manuell eingeschwenkt und ausgefahren. Die Düsenplatte 2 ist mit zwei Lagerzapfen 11 und einem Kupplungsstück 12 ausgerüstet. Beim Auffahren bzw. beim Erreichen der Endstellung des Hubaggregats 5 legen sich die beiden Lagerzapfen 11 in die beiden Lagerstellen 6 und parallel fahren die beiden Kupplungsstücke 8, 12 ineinander.The device 1 is mechanically or manually swung in and extended below the opened shooting unit 9. The nozzle plate 2 is equipped with two bearing journals 11 and a coupling piece 12. When opening or when the end position of the lifting unit 5 is reached, the two bearing pins 11 lie in the two bearing points 6 and the two coupling pieces 8, 12 move parallel to one another.

Nach dem mechanischen Lösen der Verbindung zwischen Schießaggregat 9 und Schußhaube 10 fährt die Hubvorrichtung 5 mit der daraufliegenden Schuß­haube 10 ab. Der Wendetrieb 7 kann nun die komplette Schußhaube 10 um eine horizontale Achse 15 drehen, so daß der sich darin befindliche Restsand in den Behälter 3 ausgeleert werden kann (Fig. 1, 3 und 4).After the mechanical release of the connection between the shooting unit 9 and the shooting hood 10, the lifting device 5 moves off with the shooting hood 10 lying thereon. The reversing gear 7 can now turn the complete firing hood 10 about a horizontal axis 15, so that the remaining sand therein can be emptied into the container 3 (FIGS. 1, 3 and 4).

Nachdem die Schußhaube 10 frei von Sand ist und in ihre Grundstellung zurückgedreht wurde, wird das Hubaggregat 5 aufgefahren. Danach kann die Schußhaube 10 wieder mechanisch am Schießaggregat 9 befestigt und danach die Düsenplatte 2 ausgetauscht werden. Hierzu wird die gleiche Vorrichtung 1 benutzt, lediglich der Wendetrieb 7 ist inaktiv.After the shooting hood 10 is free of sand and has been turned back into its basic position, the lifting unit 5 is raised. Then the shooting hood 10 can be mechanically fastened again to the shooting unit 9 and then the nozzle plate 2 can be replaced. The same device 1 is used for this, only the reversing gear 7 is inactive.

Der alternative Ersatz gilt auch für den Wechsel der Düsenplatte 2. Die mechanischen Verbindungen zwischen Düsenplatte 2 und Schußhaube 10 werden gelöst, das Hubaggregat 5 mit der daraufliegenden Düsenplatte 2 wird abgefahren. Nach dem horizontalen Wegschwenken der Vorrichtung 1, weg vom Schußaggregat 9, ist die Zugänglichkeit zur Düsenplatte 2 gewährleistet. Die Düsenplatte 2 kann gegen eine neue ausgetauscht werden (Fig. 2 und 6).The alternative replacement also applies to changing the nozzle plate 2. The mechanical connections between the nozzle plate 2 and the firing hood 10 are released, the lifting unit 5 with the nozzle plate 2 lying thereon is moved down. After the device 1 has been pivoted away horizontally, away from the firing unit 9, access to the nozzle plate 2 is ensured. The nozzle plate 2 can be exchanged for a new one (FIGS. 2 and 6).

Die optimale Zugänglichkeit ist in dieser Stellung gewährleistet. Danach erfolgt das Zurückschwenken unterhalb des Schießaggregats 9 mit anschließendem Hubvorgang gegen dasselbe sowie die nachfolgende mechanische Verbindung zwischen Düsenplatte 2 und Schußhaube 10.Optimal accessibility is guaranteed in this position. Then the pivoting back takes place below the shooting unit 9 with a subsequent lifting operation against the same and the subsequent mechanical connection between the nozzle plate 2 and the shooting hood 10.

Dadurch wird erreicht, daß der anfallende Rest­sand in einen Behälter 3 oder auf ein Abtransport­band gezielt ausgekippt und nicht die Maschine ver­schmutzt wird bzw. durch die Vorrichtung ist ein schneller Wechsel der Düsenplatte möglich (Fig. 3 und Fig. 4)This ensures that the remaining sand is dumped into a container 3 or on a conveyor belt and the machine is not soiled or the device enables the nozzle plate to be changed quickly (FIGS. 3 and 4)

Claims (2)

1. Vorrichtung zum Wechseln der Schußhaube und/oder der Düsenplatte und zum Entfernen des Restsandes aus der Schußhaube an Kern- und Maskenschießmaschinen, dadurch gekennzeichnet, daß sie aus einem um eine vertikale Achse (14) schwenkbaren Ausleger (4) mit einem aufgebauten Hubaggregat (5) mit zwei Lagerstellen (6) und einem mechanischen Wende­trieb (7) mit Wendekupplung (8) zur Aufnahme und zum Drehen der mit der Düsenplatte (2) verbundenen Schußhaube (10) um eine theoretische horizontale Achse (15) besteht.1. Device for changing the firing hood and / or the nozzle plate and for removing the residual sand from the firing hood on core and mask shooting machines, characterized in that it consists of a boom (4) which can be pivoted about a vertical axis (14) and has a built-up lifting unit ( 5) with two bearing points (6) and a mechanical reversing gear (7) with reversing coupling (8) for receiving and rotating the shooting hood (10) connected to the nozzle plate (2) around a theoretical horizontal axis (15). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Schußhaube (10) mit zwei Lagerzapfen (11) für den Eingriff in die Lagerstellen (6) und einem Kupplungsstück (12) ausgestattet ist.2. Device according to claim 1, characterized in that the firing hood (10) is equipped with two bearing pins (11) for engagement in the bearing points (6) and a coupling piece (12).
EP19880104595 1987-04-03 1988-03-23 Device for changing the blowing head and/or the blowing plate of a core and shell mould shooting machine Expired - Lifetime EP0284967B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3711336 1987-04-03
DE19873711336 DE3711336C1 (en) 1987-04-03 1987-04-03 Device for changing the shooting hood and / or the nozzle plate on core and mask shooting machines

Publications (3)

Publication Number Publication Date
EP0284967A2 true EP0284967A2 (en) 1988-10-05
EP0284967A3 EP0284967A3 (en) 1990-02-28
EP0284967B1 EP0284967B1 (en) 1992-02-26

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ID=6324840

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Application Number Title Priority Date Filing Date
EP19880104595 Expired - Lifetime EP0284967B1 (en) 1987-04-03 1988-03-23 Device for changing the blowing head and/or the blowing plate of a core and shell mould shooting machine

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EP (1) EP0284967B1 (en)
DE (1) DE3711336C1 (en)
ES (1) ES2030100T3 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0756909A1 (en) * 1995-08-02 1997-02-05 Loramendi, S.A. Core blowing machine blowing plate exchanging and cleaning system
CN102728792A (en) * 2011-04-16 2012-10-17 卢伯股份有限公司 Method for replacement of a filter plate of a core shooter
EP3272441A1 (en) * 2016-07-19 2018-01-24 Loramendi, S.COOP. Sand core making machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899019A (en) * 1972-06-09 1975-08-12 Acme Cleveland Corp Three-position molding machine
GB2001268A (en) * 1977-07-13 1979-01-31 Acme Cleveland Corp Mould making machine
GB2046152A (en) * 1979-03-26 1980-11-12 Acme Cleveland Corp A Molding Machine
EP0139797A1 (en) * 1983-10-26 1985-05-08 Naniwa Products Co, Ltd An automatic cleaning device for a molding machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE876745C (en) * 1942-02-22 1953-05-18 Wilhelm Schwiese Sand blow molding machine
DE3148461C1 (en) * 1981-12-08 1983-04-14 Adolf Hottinger, Gießerei und Maschinenbau GmbH, 6800 Mannheim Core and mask shooting machine
DE3422687C1 (en) * 1984-06-19 1985-06-13 Adolf Hottinger, Gießerei und Maschinenbau GmbH, 6800 Mannheim Core and mask shooting machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899019A (en) * 1972-06-09 1975-08-12 Acme Cleveland Corp Three-position molding machine
GB2001268A (en) * 1977-07-13 1979-01-31 Acme Cleveland Corp Mould making machine
GB2046152A (en) * 1979-03-26 1980-11-12 Acme Cleveland Corp A Molding Machine
EP0139797A1 (en) * 1983-10-26 1985-05-08 Naniwa Products Co, Ltd An automatic cleaning device for a molding machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0756909A1 (en) * 1995-08-02 1997-02-05 Loramendi, S.A. Core blowing machine blowing plate exchanging and cleaning system
ES2126449A1 (en) * 1995-08-02 1999-03-16 Loramendi Sa Core blowing machine blowing plate exchanging and cleaning system
CN102728792A (en) * 2011-04-16 2012-10-17 卢伯股份有限公司 Method for replacement of a filter plate of a core shooter
CN102728792B (en) * 2011-04-16 2014-08-20 卢伯股份有限公司 Method for replacement of a filter plate of a core shooter
EP3272441A1 (en) * 2016-07-19 2018-01-24 Loramendi, S.COOP. Sand core making machine
WO2018015589A1 (en) 2016-07-19 2018-01-25 Loramendi, S.Coop. Machine for producing sand cores
KR20190046786A (en) * 2016-07-19 2019-05-07 로라멘디, 에스.쿱. Sand Core Manufacturing Machine
US10471501B2 (en) 2016-07-19 2019-11-12 Loramendi, S. Coop. Sand core making machine

Also Published As

Publication number Publication date
ES2030100T3 (en) 1992-10-16
EP0284967B1 (en) 1992-02-26
EP0284967A3 (en) 1990-02-28
DE3711336C1 (en) 1988-11-24

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