EP0087575B1 - Moulding machine for producing flaskless moulds - Google Patents

Moulding machine for producing flaskless moulds Download PDF

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Publication number
EP0087575B1
EP0087575B1 EP83100566A EP83100566A EP0087575B1 EP 0087575 B1 EP0087575 B1 EP 0087575B1 EP 83100566 A EP83100566 A EP 83100566A EP 83100566 A EP83100566 A EP 83100566A EP 0087575 B1 EP0087575 B1 EP 0087575B1
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EP
European Patent Office
Prior art keywords
moulding
side parts
openings
flasks
machine
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EP83100566A
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German (de)
French (fr)
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EP0087575A1 (en
Inventor
Michael Achinger
Erhard W. Jaeger
Reinhold Lipp
Walter Streitenberger
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Priority to AT83100566T priority Critical patent/ATE30864T1/en
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    • 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

Definitions

  • the invention relates to a molding machine for producing boxless molds with two mold boxes which can be moved to and fro on a model plate carrier which can be moved in and out and which are enclosed by a rectangular frame which absorbs the reaction forces arising during the pressing process and which is normal to the vertical frame center plane
  • the central plane is symmetrical, and a hollow machine frame that holds the flowable molding material.
  • a molding machine with a hollow machine frame is known from the same U.S. patent, which is C-shaped in the vertical central plane, the vertical web as a molding sand connecting line and the two C-arms for introducing the molding sand into the mold cavities of the two Shaped boxes serve in their closed position.
  • the two mutually associated ends of the C-arms are each surrounded by an annular cylinder, in each of which an annular piston acted upon by a pressure medium, which in turn is connected to the lattice-shaped press ram.
  • These gratings are subject to erosion due to the molding sand flowing through them and therefore have a correspondingly high level of wear.
  • Two actuating cylinders are additionally required for the movement of the two molding boxes. As an open C as a machine frame would open up due to the high pressing forces, tie rods - as explained and shown at the beginning of the USA PS - are still required.
  • the present invention has for its object to provide a molding machine for the production of boxless casting molds with the smallest possible number of assemblies and components, which nevertheless ensures the same quality as the expensive machines in terms of precision, particularly with regard to the offset which is decisive for the production scrap.
  • mechanical engineering it is an old fact of experience that a machine is more susceptible to faults the more complicated it is constructed, since each machine is only as strong as its weakest link. With the reduction of the assemblies, therefore, a minimum of susceptibility to faults should also be achieved. Overall, the manufacturing and operating costs of the molding machines are to be reduced to such an extent that it is also possible for financially weaker small and medium-sized companies to use such machines.
  • the rectangular frame forming the machine frame is symmetrical in the central plane normal to the vertical frame center plane, and that its side parts forming the longitudinal spars are simultaneously hollow to accommodate the flowable molding material and with the sand filling funnel are openly connected, ie in the area of the closed position of the molding boxes when they rest on the model plates, have injection openings, and that the side parts also have the guides for the axial displacement of the molding boxes.
  • the machine frame designed according to the invention itself also performs three functions, namely: providing the molding material to be blown in, tie rod functions and guide functions for the molding boxes.
  • 1 denotes the machine frame, which is designed as a closed, symmetrical frame, with the side parts 2, 2 'which form the lateral spars and which are connected to the upper transverse yoke 3 and the lower transverse yoke 3'.
  • the side parts 2, 2 ' are - as can be seen from Fig. 3 - formed as strong box-sheet profiles, so that they safely absorb the reaction forces introduced into them during the pressing process.
  • the cavities 4, 4 ' serve to hold the flowable molding material (indicated by dotted lines) and extend at least over the displacement path “s” of the molding boxes 5, 6.
  • the side parts 2, 2 ' are in open connection with the sand filling funnel 7.
  • the guide plates 8, 8' and 9, 9 'for the molding boxes 5 are attached, which in turn the guide plates at the edges with the guide strips 10, 10', and 11, 11th 'embrace (Fig. 3).
  • the upper injection openings 12, 12 'and the lower injection openings 13, 13' are formed in the two side parts 2, 2 ' processed, and in the mold boxes 5, 6, the likewise slot-shaped injection openings 14, 14 'and 15, 15' are arranged opposite each other so that the openings 12, 12 'and 13, 13' in the side parts 2, 2 'at Pulling apart the mold boxes 5, 6 are closed and when in contact with the model plates 16, 17 with the openings 14, 14 'or 15, 15' in the mold boxes 5, 6 are in an open flow connection.
  • the mold boxes here therefore also take on the function of valve slides controlling the injection slots in the side parts 2, 2 ', so that special valves are saved for this.
  • the opposing injection openings reliably prevent the formation of “slipstream”, as is often the case with one-sided injection.
  • the guide plates 8, 8 'and 9, 9' forming the guide tracks are arranged at a distance "a" from one another, so that a guide link 18, 18 'is formed on each side part, in which the guide runners 19, 19' (FIG 3) equipped, box-shaped model plate carrier 20 is guided when retracting.
  • the scenes 18, 18 ' serve to fix the model plates 16, 17 during the pressing process.
  • the mold box 6 in the extended position lies against the stops 22, 22 ', whereas the upper mold box 5 opposite it has driver strips 23, 23' with which it is attached to the press ram 24 of the press cylinder 25 assigned to it.
  • the lower mold box 6, is carried along by the press ram 26 of the press cylinder 27 when it is raised. This eliminates the need for complicated latching devices with their controls in the rough operation of a molding shop.
  • the side parts 2, 2 ' have passage openings 28, 29 for the introduction of pallets 30 or for the delivery of the finished, molded bales 31, 32.
  • the molding boxes 5, 6 are pulled apart and the model plate carrier 20 is moved out.
  • the two mold halves (mold bales) 31, 32 are now stripped, placed together with the pallet 30 carried along on the press die 26 and lowered to the level of the roller table.
  • the model plate carrier 20 is designed as a hollow, hermetically sealed box. It is fastened at the end of a support tube 37 which penetrates the vacuum container 33 and is axially displaceable with the actuating cylinder 34 and rotatably mounted in the bearings 35, 36.
  • the support tube 37 has flow openings 38, 39 both on the box side and in the inflow region of the vacuum container 33.
  • a poppet valve 40 with the valve seat 42 is accommodated in the support tube 37 and is controlled by the valve rod 41 penetrating the support tube 37. The blown air sucked out of the mold cavities thus flows through openings indicated in FIG.
  • a vacuum is to be understood as any lower than the pressure of the blowing air.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Table Equipment (AREA)

Abstract

The invention discloses a molding machine for making flaskless molds, which has a minimum of structural component groups and units as well as of control devices and adjusting elements. The machine frame is embodied by a closed, symmetrical frame including hollow side parts which receive the pourable molding material and simultaneously perform the functions of tie rods and guidance for the molding flasks. Molding sand blowing-in openings are disposed on the inner walls of the side parts, and the openings are controlled by molding sand openings in the molding flasks in the manner of a valve slide.

Description

Die Erfindung betrifft eine Formmaschine zur Herstellung kastenloser Formen mit zwei auf einem zwischen sie ein- und ausfahrbaren Modellplattenträger hin- und wegbewegbaren Formkästen, die von einem die beim Pressvorgang entstehenden Reaktionskräfte aufnehmenden, rechteckigen Rahmen umschlossen sind, der in der zur vertikalen Gestell-Mittelebene normalen Mittelebene symmetrisch ausgebildet ist, und einem hohlen, das fliessfähige Formmaterial aufnehmenden Maschinengestell.The invention relates to a molding machine for producing boxless molds with two mold boxes which can be moved to and fro on a model plate carrier which can be moved in and out and which are enclosed by a rectangular frame which absorbs the reaction forces arising during the pressing process and which is normal to the vertical frame center plane The central plane is symmetrical, and a hollow machine frame that holds the flowable molding material.

Aus der USA-PS 35 56 196, die auf die DT-PS 15 18 526 und 17 58 245 zurückgeht, ist eine Formmaschine zur Herstellung kastenloser Formen bekannt, bei der zwei auf einen zwischen sie ein-und ausfahrbaren Modellplattenträgern hin- und wegbewegbaren Formkästen von einem rechtekkigen Rahmen umschlossen sind, dessen vertikale Säulen die beim Verdichten des Formmaterials eingeleiteten Reaktionskräfte aufnehmen. Diese Säulen sind jedoch massiv ausgebildet und haben ausschliesslich statische Funktionen.From the USA-PS 35 56 196, which goes back to the DT-PS 15 18 526 and 17 58 245, a molding machine for the production of boxless molds is known, in which two mold boxes can be moved back and forth on a model plate carrier that can be moved in and out between them are enclosed by a rectangular frame, the vertical columns of which absorb the reaction forces introduced during the compression of the molding material. However, these pillars are solid and have only static functions.

Ausserdem ist aus der gleichen USA-Patentschrift eine Formmaschine mit einem hohlen Maschinengestell bekannt, das in der vertikalen Mittelebene C-förmig ausgebildet ist, wobei der vertikale Steg als Formsand-Verbindungsleitung und die beiden C-Bögen zur Einbringung des Formsandes in die Formhohlräume der beiden Formkästen in deren Schliessstellung dienen. Die beiden einander zugeordneten Enden der C-Bögen sind von je einem Ringzylinder umschlossen, in denen je ein von einem Druckmittel beaufschlagter ringförmiger Kolben arbeitet, der seinerseits mit dem gitterförmigen Pressstempel verbunden ist. Diese Gitterroste unterliegen der Erosion durch den sie durchfliessenden Formsand und haben daher entsprechend grossen Verschleiss. Für die Bewegung der beiden Formkästen sind zusätzlich je zwei Stellzylinder erforderlich. Da ein offenes C als Maschinengestell durch die hohen Presskräfte aufklaffen würde, sind weiterhin Zuganker - wie am Anfang der USA-PS erläutert und gezeigt - erforderlich.In addition, a molding machine with a hollow machine frame is known from the same U.S. patent, which is C-shaped in the vertical central plane, the vertical web as a molding sand connecting line and the two C-arms for introducing the molding sand into the mold cavities of the two Shaped boxes serve in their closed position. The two mutually associated ends of the C-arms are each surrounded by an annular cylinder, in each of which an annular piston acted upon by a pressure medium, which in turn is connected to the lattice-shaped press ram. These gratings are subject to erosion due to the molding sand flowing through them and therefore have a correspondingly high level of wear. Two actuating cylinders are additionally required for the movement of the two molding boxes. As an open C as a machine frame would open up due to the high pressing forces, tie rods - as explained and shown at the beginning of the USA PS - are still required.

Aus den DE-OS 30 21 592 und 28 14 140 ist es bekannt, den Formsand aus seitlich neben dem Formkasten bzw. den Formkästen angeordnete Formsandbehälter in die Formhohlräume einzublasen.From DE-OS 30 21 592 and 28 14 140 it is known to blow the molding sand from the molding sand container arranged laterally next to the molding box or the molding boxes into the mold cavities.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Formmaschine zur Herstellung kastenloser Giessformen mit geringstmöglicher Anzahl von Baugruppen und Bauteilen zu schaffen, die dennoch hinsichtlich der Präzision, besonders hinsichtlich des den Fertigungsausschuss massgeblich bestimmenden Versatzes, die gleiche Qualität gewährleistet wie die teuren Maschinen. Im Maschinenbau ist es eine alte Erfahrungstatsache, dass eine Maschine umso störanfälliger ist, je komplizierter sie konstruiert ist, da jede Maschine nur so stark ist wie ihr schwächstes Glied. Mit der Reduzierung der Baugruppen soll daher auch ein Minimum an Störungsanfälligkeit erreicht werden. Insgesamt sollen dadurch die Herstellungs- und Betriebskosten der Formmaschinen soweit reduziert werden, dass es auch finanzschwächeren Klein- und Mittelbetrieben möglich wird, derartige Maschinen zum Einsatz zu bringen.The present invention has for its object to provide a molding machine for the production of boxless casting molds with the smallest possible number of assemblies and components, which nevertheless ensures the same quality as the expensive machines in terms of precision, particularly with regard to the offset which is decisive for the production scrap. In mechanical engineering, it is an old fact of experience that a machine is more susceptible to faults the more complicated it is constructed, since each machine is only as strong as its weakest link. With the reduction of the assemblies, therefore, a minimum of susceptibility to faults should also be achieved. Overall, the manufacturing and operating costs of the molding machines are to be reduced to such an extent that it is also possible for financially weaker small and medium-sized companies to use such machines.

Diese Aufgabe wird gemäss der vorliegenden Erfindung in erster Linie dadurch gelöst, dass der das Maschinengestell bildende rechteckige Rahmen in der zur vertikalen Gestell-Mittelebene normalen Mittelebene symmetrisch ist, dass seine die Längsholme bildenden Seitenteile zugleich zur Aufnahme des fliessfähigen Formmaterials hohl ausgebildet und mit dem Sandfülltrichter offen verbunden sind, und im Bereich der Schliessstellung der Formkästen d.h. bei deren Aufliegen auf den Modellplatten, Einblasöffnungen aufweisen, und dass die Seitenteile ausserdem die Führungen für die Axialverschiebung der Formkästen besitzen.This object is achieved according to the present invention primarily by the fact that the rectangular frame forming the machine frame is symmetrical in the central plane normal to the vertical frame center plane, and that its side parts forming the longitudinal spars are simultaneously hollow to accommodate the flowable molding material and with the sand filling funnel are openly connected, ie in the area of the closed position of the molding boxes when they rest on the model plates, have injection openings, and that the side parts also have the guides for the axial displacement of the molding boxes.

Das erfindungsgemäss ausgebildete Maschinengestell selbst übernimmt dabei zugleich drei Funktionen, nämlich: Bereitstellung des einzublasenden Formmaterials, Zugankerfunktionen und Führungsfunktionen für die Formkästen.The machine frame designed according to the invention itself also performs three functions, namely: providing the molding material to be blown in, tie rod functions and guide functions for the molding boxes.

Aus der erfindungsgemässen Grundkonzeption ergeben sich weitere vorteilhafte Gestaltungsmerkmale zwecks Reduzierung von Herstellungs-und Betriebskosten. Diese werden nachfolgend an einem Ausführungsbeispiel an Hand schematischer Darstellungen erläutert. Die Zeichnungen zeigen in

  • Fig. 1 eine Formmaschine mit vertikaler Richtung der Presskräfte im Vertikalschnitt nach Linie I ÷ I der Fig. 2,
  • Fig. 2 einen Vertikalschnitt nach Linie II ÷ II der Fig.1,
  • Fig. 3 einen Horizontalschnitt längs Linie III ÷ III der Fig. 2 und
  • Fig. 4 einen vertikalen Schnitt durch die Modellplattentragvorrichtung im grösseren Massstab.
From the basic concept according to the invention, further advantageous design features result in order to reduce manufacturing and operating costs. These are explained below using an exemplary embodiment with the aid of schematic representations. The drawings show in
  • 1 is a molding machine with the vertical direction of the pressing forces in vertical section along line I ÷ I of Fig. 2,
  • 2 is a vertical section along line II ÷ II of Fig.1,
  • Fig. 3 is a horizontal section along line III ÷ III of Fig. 2 and
  • Fig. 4 is a vertical section through the model plate support device on a larger scale.

In den Zeichnungen bezeichnet 1 das als geschlossener, symmetrischer Rahmen ausgebildete Maschinengestell mit den die seitlichen Holme bildenden Seitenteilen 2, 2', die mit dem oberen Querjoch 3 und dem unteren Querjoch 3' verbunden sind. Die Seitenteile 2, 2' sind - wie aus Fig. 3 ersichtlich - als kräftige Kasten-Blechprofile ausgebildet, so dass sie die beim Pressvorgang in sie eingeleiteten Reaktionskräfte sicher aufnehmen. Die Hohlräume 4, 4' dienen zur Aufnahme des fliessfähigen Formmaterials (punktiert angedeutet) und erstrecken sich mindestens über den Verschiebeweg «s» der Formkästen 5, 6.In the drawings, 1 denotes the machine frame, which is designed as a closed, symmetrical frame, with the side parts 2, 2 'which form the lateral spars and which are connected to the upper transverse yoke 3 and the lower transverse yoke 3'. The side parts 2, 2 'are - as can be seen from Fig. 3 - formed as strong box-sheet profiles, so that they safely absorb the reaction forces introduced into them during the pressing process. The cavities 4, 4 'serve to hold the flowable molding material (indicated by dotted lines) and extend at least over the displacement path “s” of the molding boxes 5, 6.

Auf dem oberen Ende des Rahmens sind die Seitenteile 2, 2' mit dem Sandfülltrichter 7 in offener Verbindung. Auf den einander gegenüberliegenden Innenseiten der Seitenteile 2, 2' sind die Führungsplatten 8, 8' und 9, 9' für die Formkästen 5, angebracht, die ihrerseits die Führungsplatten an den Kanten mit den Führungsleisten 10, 10', bzw. 11, 11' umgreifen (Fig. 3).On the upper end of the frame, the side parts 2, 2 'are in open connection with the sand filling funnel 7. On the mutually opposite inner sides of the side parts 2, 2 ', the guide plates 8, 8' and 9, 9 'for the molding boxes 5, are attached, which in turn the guide plates at the edges with the guide strips 10, 10', and 11, 11th 'embrace (Fig. 3).

In den beiden Seitenteilen 2, 2' sind die oberen als Schlitze geformten Einblasöffnungen 12, 12' und die unteren Einblasöffnungen 13, 13' eingearbeitet, und in den Formkästen 5, 6 sind die ebenfalls schlitzförmigen Einblasöffnungen 14, 14' bzw. 15, 15' einander gegenüberliegend so angeordnet, dass die Öffnungen 12, 12' bzw. 13, 13' in den Seitenteilen 2, 2' beim Auseinanderziehen der Formkästen 5, 6 geschlossen sind und bei Auflage auf den Modellplatten 16, 17 mit den Öffnungen 14, 14' bzw. 15, 15' in den Formkästen 5, 6 in offener Durchflussverbindung stehen. Die Formkästen übernehmen hier also zugleich die Funktion von die Einblasschlitze in den Seitenteilen 2, 2' steuernden Ventilschiebern, so dass besondere Ventile hierfür eingespart werden. Die einander gegenüberliegenden Einblasöffnungen verhindern dabei zuverlässig die Bildung von «Windschatten», wie sie bei einseitiger Einblasung häufig in Erscheinung treten.The upper injection openings 12, 12 'and the lower injection openings 13, 13' are formed in the two side parts 2, 2 ' processed, and in the mold boxes 5, 6, the likewise slot-shaped injection openings 14, 14 'and 15, 15' are arranged opposite each other so that the openings 12, 12 'and 13, 13' in the side parts 2, 2 'at Pulling apart the mold boxes 5, 6 are closed and when in contact with the model plates 16, 17 with the openings 14, 14 'or 15, 15' in the mold boxes 5, 6 are in an open flow connection. The mold boxes here therefore also take on the function of valve slides controlling the injection slots in the side parts 2, 2 ', so that special valves are saved for this. The opposing injection openings reliably prevent the formation of “slipstream”, as is often the case with one-sided injection.

Die die Führungsbahnen bildenden Führungsplatten 8, 8' bzw. 9, 9' sind im Abstand «a» zueinander angeordnet, so dass an jedem Seitenteil eine Führungskulisse 18, 18' gebildet ist, in denen der mit kreuzkopfartigen Führungskufen 19, 19' (Fig. 3) ausgestattete, kastenförmige Modellplattenträger 20 beim Einfahren geführt wird. Gleichzeitig dienen die Kulissen 18, 18' zur Fixierung der Modellplatten 16, 17 beim Pressvorgang.The guide plates 8, 8 'and 9, 9' forming the guide tracks are arranged at a distance "a" from one another, so that a guide link 18, 18 'is formed on each side part, in which the guide runners 19, 19' (FIG 3) equipped, box-shaped model plate carrier 20 is guided when retracting. At the same time, the scenes 18, 18 'serve to fix the model plates 16, 17 during the pressing process.

Der in der Ausschubstellung befindliche Formkasten 6 liegt an den Anschlägen 22, 22' an, wogegen der ihm gegenüberliegende obere Formkasten 5 Mitnehmerleisten 23, 23' aufweist, mit denen er am Pressstempel 24 des ihm zugeordneten Presszylinders 25 angehängt ist. Der untere Formkasten 6 hingegen wird beim Hochfahren von dem Pressstempel 26 des Presszylinders 27 mitgenommen. Es entfallen hierbei also komplizierte und im rauhen Betrieb einer Formerei störanfällige Klinkvorrichtung mit ihren Steuerungen.The mold box 6 in the extended position lies against the stops 22, 22 ', whereas the upper mold box 5 opposite it has driver strips 23, 23' with which it is attached to the press ram 24 of the press cylinder 25 assigned to it. The lower mold box 6, on the other hand, is carried along by the press ram 26 of the press cylinder 27 when it is raised. This eliminates the need for complicated latching devices with their controls in the rough operation of a molding shop.

Am unteren Ende haben die Seitenteile 2, 2' Durchlassöffnungen 28, 29 zur Einbringung von Paletten 30 bzw. zur Ausbringung der fertigen, zugelegten Formballen 31, 32.At the lower end, the side parts 2, 2 'have passage openings 28, 29 for the introduction of pallets 30 or for the delivery of the finished, molded bales 31, 32.

Nachdem der Formsand in den Formhohlräumen mit Hilfe der Pressstempel 24 und 26 verdichtet ist, werden die Formkästen 5, 6 auseinandergezogen und der Modellplattenträger 20 wird herausgefahren. In bekannter Weise werden nun die beiden Formhälften (Formballen) 31, 32 gestrippt, mitsamt der mitgeführten Palette 30 auf dem Pressstempel 26 abgesetzt und auf das Niveau des Rollganges abgesenkt.After the molding sand has been compressed in the mold cavities with the aid of the press punches 24 and 26, the molding boxes 5, 6 are pulled apart and the model plate carrier 20 is moved out. In a known manner, the two mold halves (mold bales) 31, 32 are now stripped, placed together with the pallet 30 carried along on the press die 26 and lowered to the level of the roller table.

Der Modellplattenträger 20 ist - wie Fig. 4 zeigt - als hohler, hermetisch dichter Kasten ausgebildet. Er ist am Ende eines den Unterdruckbehälter 33 durchdringenden und mit dem Stellzylinder 34 axial verschieblich und in den Lagern 35, 36 drehbar gelagerten Tragrohr 37 befestigt. Das Tragrohr 37 hat sowohl kastenseitig als auch im Zuströmbereich des Unterdruckbehälters 33 Durchflussöffnungen 38, 39. Ausserdem ist im Tragrohr 37 ein Tellerventil 40 mit dem Ventilsitz 42 untergebracht, das mit der das Tragrohr 37 durchdringenden Ventilstange 41 gesteuert wird. Die aus den Formhohlräumen abgesaugte Blasluft strömt also durch in Fig. 4 angedeutete Öffnungen in den Modellplatten 16, 17 in den hohlen Kasten des Modellplattenträgers 20 und - bei geöffnetem Ventil 40 - durch die Öffnungen 38, in das Tragrohr 37 und durch die Öffnungen 39 in die Unterdruckkammer 33. Als Unterdruck ist hierbei jeder niedrigere als der Druck der Einblasluft zu verstehen.As shown in FIG. 4, the model plate carrier 20 is designed as a hollow, hermetically sealed box. It is fastened at the end of a support tube 37 which penetrates the vacuum container 33 and is axially displaceable with the actuating cylinder 34 and rotatably mounted in the bearings 35, 36. The support tube 37 has flow openings 38, 39 both on the box side and in the inflow region of the vacuum container 33. In addition, a poppet valve 40 with the valve seat 42 is accommodated in the support tube 37 and is controlled by the valve rod 41 penetrating the support tube 37. The blown air sucked out of the mold cavities thus flows through openings indicated in FIG. 4 in the model plates 16, 17 into the hollow box of the model plate carrier 20 and - with the valve 40 open - through the openings 38, into the support tube 37 and through the openings 39 in the vacuum chamber 33. In this case, a vacuum is to be understood as any lower than the pressure of the blowing air.

Es dürfte ohne weiteres einleuchten, dass die Erfindung nicht nur-wie im vorliegenden Ausführungsbeispiel erläutert - bei Maschinen mit vertikaler Richtung der Presskräfte realisierbar ist, wobei Formballenpaare mit horizontaler Trennfuge entstehen. Sie ist ebenso auch bei Maschinen mit horizontaler Richtung der Presskräfte realisierbar, bei der Formballenstränge mit vertikalen Trennfugen entstehen.

Figure imgb0001
It should be readily apparent that the invention can be implemented not only - as explained in the present exemplary embodiment - in machines with a vertical direction of the pressing forces, pairs of bales being formed with a horizontal parting line. It can also be implemented on machines with a horizontal direction of the pressing forces, in which form bale strands with vertical parting lines are created.
Figure imgb0001

Claims (9)

1. A moulding machine for pressure shaping flaskless moulds (31, 32) comprising a rectangular support frame including a pair of oppositely disposed side parts (2, 2'), two oppositely disposed moulding flasks (5, 6) which are movable back and forth vertically and enclosed within said pair of side parts, a match plate carrier (20) that can be moved in a horizontal direction into and from a position between said moulding flasks, said match plate carrier including oppositely disposed match plates (16, 17) thereon, said rectangular support frame in which said moulding flasks are enclosed absorbs any reactive forces arising during a pressureshaping process, said side parts are hollow for receiving a pourable moulding material, said rectangular frame being symmetrical in a central plane that is normal to a vertical central plane of the rectangular frame, said side parts containing oppositely disposed openings (12, 12'/ 13, 13') and each of said moulding flasks having oppositely disposed openings (14, 14'/15, 15') in their sides which are in alignment with said openings in said side parts when said moulding flasks are in a mould forming position relative to said match plates so that moulding material can be transferred from said side parts to said moulding flasks via said openings, and guide plates (8, 8'/9, 9') on said side parts for guding said moulding flasks for movement relative to said side parts.
2. A moulding machine as defined by claim 1, characterized in that said side parts are embodied in said rectangular support frame, at least over the displacement path of the moulding flasks and are rectangular, hollow profiled elements formed of sheet metal which are connected in their ends by crosspieces (3, 3').
3. A moulding machine as defined by claim 1, characterized in that said openings in both side parts and in both moulding flasks related in such a manner that when the moulding flasks are moved apart the openings in the side parts are closed by said moulding flasks, and when the moulding flasks are resting on the match plates, the openings in the side parts are in flowthrough communication with the openings in the moulding flasks.
4. A moulding machine as defined by claim 1, characterized in that a pair of guide plates (8, 8'/9, 9') are secured to each of the side parts and are spaced apart from one another by a distance "a", such that one guide slot (18, 18') is formed between said pair of guide plates on each side part for guiding guide sleds (19, 19') equipped on the match plate carrier.
5. A moulding machine as defined by claim 1, characterized in that one moulding flask when located in a mould removal position rests on a stop (22), while in contrast one moulding flas in opposition thereto has a driver panels (23, 23') by which one said moulding flask in suspended on a press die (24) of a press cylinder associated with said one moulding flask.
6. A moulding machine as defined by claim 1, characterized in that at the lower end of the rectangular frame are openings (28, 29) for the introduction of pallets (30) or for the removable of the finished, assembled packet formed by mould halves (31, 32).
7. A moulding machine as defined in claim 1 characterized in that the match plate carrier (20) in embodied as a hollow, hermetically sealed flask and is secured on the end of a supparting tube (37) which passes through a vaccuum container (33) and is there axial displacable and rotatably supported.
8. A moulding machine as defined in claim 7 characterized in that the supporting tube (37) has flow through openings (38, 39) both toward the flask and in the in flow zone of the vaccuum container (33).
9. A moulding machine as defined in claim 7 characterized in that a plate valve (40) is arranged in the supporting tube (37), being controlled with the valve rod (41) that passes through the supporting tube (37).
EP83100566A 1982-02-20 1983-01-22 Moulding machine for producing flaskless moulds Expired EP0087575B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83100566T ATE30864T1 (en) 1982-02-20 1983-01-22 MOLDING MACHINE FOR THE PRODUCTION OF BOXLESS MOLDS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3206169A DE3206169C1 (en) 1982-02-20 1982-02-20 Molding machine for the production of boxless molds
DE3206169 1982-02-20

Publications (2)

Publication Number Publication Date
EP0087575A1 EP0087575A1 (en) 1983-09-07
EP0087575B1 true EP0087575B1 (en) 1987-11-19

Family

ID=6156279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100566A Expired EP0087575B1 (en) 1982-02-20 1983-01-22 Moulding machine for producing flaskless moulds

Country Status (6)

Country Link
US (1) US4537238A (en)
EP (1) EP0087575B1 (en)
JP (1) JPS58192653A (en)
AT (1) ATE30864T1 (en)
DE (2) DE3206169C1 (en)
DK (1) DK68183A (en)

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CN103611890A (en) * 2013-12-16 2014-03-05 衢州市依科达节能技术有限公司 Claw type inner die assembly arm

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JPH0785824B2 (en) * 1985-12-13 1995-09-20 新東工業株式会社 Mold pressing device
DK335889A (en) * 1989-07-06 1991-01-07 Dansk Ind Syndikat PRESSURE FOR PRESSURE OF CASTING FORMS AND MODE LABER FOR USE IN SUCH A PRESSURE.
DE29610658U1 (en) * 1996-06-18 1997-10-23 Kienle, Rainer, 86391 Stadtbergen Molding machine
DE29700975U1 (en) * 1997-01-21 1998-05-20 Kienle, Rainer, 86391 Stadtbergen Molding machine
JP5123629B2 (en) * 2007-09-27 2013-01-23 アイシン高丘株式会社 Unframed sand mold casting equipment
US20160221077A1 (en) * 2015-01-30 2016-08-04 United Technologies Corpoation Bondcasting process using investment and sand casting

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Publication number Priority date Publication date Assignee Title
CN103611890A (en) * 2013-12-16 2014-03-05 衢州市依科达节能技术有限公司 Claw type inner die assembly arm
CN103611890B (en) * 2013-12-16 2015-06-17 衢州市依科达节能技术有限公司 Claw type inner die assembly arm

Also Published As

Publication number Publication date
DK68183D0 (en) 1983-02-17
DK68183A (en) 1983-08-21
US4537238A (en) 1985-08-27
ATE30864T1 (en) 1987-12-15
EP0087575A1 (en) 1983-09-07
DE3206169C1 (en) 1983-09-29
DE3374528D1 (en) 1987-12-23
JPH0254181B2 (en) 1990-11-20
JPS58192653A (en) 1983-11-10

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