EP1995002A2 - Shaking device and method for removing core sand from hollow moulds - Google Patents

Shaking device and method for removing core sand from hollow moulds Download PDF

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Publication number
EP1995002A2
EP1995002A2 EP08008148A EP08008148A EP1995002A2 EP 1995002 A2 EP1995002 A2 EP 1995002A2 EP 08008148 A EP08008148 A EP 08008148A EP 08008148 A EP08008148 A EP 08008148A EP 1995002 A2 EP1995002 A2 EP 1995002A2
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EP
European Patent Office
Prior art keywords
casting
vibrator
drum
frame
core sand
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Granted
Application number
EP08008148A
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German (de)
French (fr)
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EP1995002B1 (en
EP1995002A3 (en
Inventor
Alfred Elser
Franz Sachsenmaier
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August Moessner & Co Kg GmbH
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August Moessner & Co Kg GmbH
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Application filed by August Moessner & Co Kg GmbH filed Critical August Moessner & Co Kg GmbH
Priority to PL08008148T priority Critical patent/PL1995002T3/en
Publication of EP1995002A2 publication Critical patent/EP1995002A2/en
Publication of EP1995002A3 publication Critical patent/EP1995002A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/001—Removing cores
    • B22D29/005—Removing cores by vibrating or hammering

Definitions

  • the invention relates to a vibrating device and a method for removing the core sand from hollow castings by means of a vibrating device according to the closer defined in the preamble of claim 1.
  • Such a vibrator is z. B. in the DE 69230160 T2 to the European patent specification EP 0524302 B1 disclosed.
  • the casting is clamped inside the machine between a support plate and a clamping plate, after which it is fixed knock resistant.
  • the support plate which is arranged in a transverse plane of the overall elongated vibrating machine near one of its end faces, is centrally located one Passage opening for a knocking hammer, which is arranged horizontally displaceable on the vibrating machine.
  • the linear slide-guided casting receiver is resiliently supported via the gas cushion of a low-pressure cylinder.
  • the guide carriage of the casting receptacle is suspended by four parallelogram-like pendulum supports and is reciprocated by a geared motor via a short displacement by means of a double eccentric crank drive.
  • This pendulum oscillation with a short stroke creates a jerk with each change of direction, so that the desired jogging movement results from the jerk accelerations for further comminution of the core sand chunks detached from the casting by knocking the compressed air hammer.
  • the casting is loosened and placed with the open side down on the recording, whereby the dissolved core sand trickle out by gravity and, for example, can reach a correspondingly arranged conveyor belt for removing the molding sand.
  • the device is a pyramidal support table with six peripheral walls, which is rotationally driven like a carousel.
  • a receiving device for a casting which comprises two support brackets and one in a plane between these moving support arm.
  • the receiving device for the casting having part of the vibrator can rotate according to the invention in the frame, the fixed in the receiving device casting can be rotated from its knocking position for detachment of the core sand in a discharge position for the detached core sand without the clamping device are solved before cumbersome would.
  • knocking is here understood the initial position of the casting, in which the pouring of the casting is turned upwards or to the side, which may vary depending on the shape of the casting and the position of the cavity.
  • a position of the casting is understood in which the cavity opening of the casting is turned downwards, so that the Kernsand under the influence of gravity and in particular under the action of vibration completely fall out of the cavity of the casting or trickle out.
  • the axis of rotation of the rotatable part of the vibrator device is approximately horizontal, as the casting thereby remains within a vertical transverse plane of the vibrator during its rotation.
  • the accessibility of the casting for the operator during rotation is maintained and the casting must be fixed by means of the clamping device in one plane, which is possible with simpler clamping elements.
  • the casting core containing cavity opening of the casting is transferred in the discharge position in a position in which it is turned down.
  • a very stable storage of the rotatable part of the vibrator is possible if this is designed as a drum which is mounted on turntables at their drum ends on opposite sides of the frame frame.
  • this is preferably via guide rollers mounted, which are arranged distributed over the circumference of the turntable and lead the associated turntable on the outer circumference.
  • guide rollers mounted which are arranged distributed over the circumference of the turntable and lead the associated turntable on the outer circumference.
  • For the motorized rotary drive of the drum is also a very robust chain drive particularly suitable.
  • one or more vibratory motors of the drum via an intermediate frame are elastically suspended from the frame frame.
  • a convenient accessibility of the receptacle for the casting is obtained when the receptacle is arranged on an accessible end face of a turntable of the drum.
  • the casting can be easily put by placing it on two support brackets in the recording of the vibrator, which protrude at a distance from each other from the turntable of the drum.
  • the casting is depressed by a pivotable with an auxiliary power clamping lever in its resting position on the consoles. Due to the relatively small cross sections of the two consoles and the opposite clamping lever, the outflow of the core sand from the casting in any rotational position of the drum is significantly impeded.
  • each rapping hammer of the vibrator is arranged co-rotating with the casting holder on the turntable.
  • pneumatic hammers on the plunger principle is due to their slim design easily the opportunity to assign the recording for the casting two, three or more knock hammers.
  • the supporting frame of the frame is preferably cuboid shaped and composed of cut to length semifinished profiles.
  • the frame frame are particularly suitable closed hollow sections, with square profiles z. B. by screw or by welding joints are particularly problem-free and clean to add.
  • the vibrating device By means of the vibrating device according to the invention, a new method for removing the core sand from hollow castings is made possible, which enables a much faster gutting of the casting than conventional methods in which the casting is only hammered and shaken.
  • This advantage is due to the fact that the casting does not have to be re-clamped, but remains in its receptacle until completion of the guttering.
  • By turning the drum arise no loss of time if shaken during the rotation of the drum at the same time.
  • a vibrating device 10 for removing cores from the cavities of Castings serves.
  • This vibrator 10 is formed by means of a frame 11 as a whole cuboid, wherein along the edges of the cuboid in each case a square tube runs with the same cross-section.
  • the square tubes are commercially available semi-finished steel tubes, which are cut to length by means of a cutting tool and screwed together via welded flange plates 12 at their ends.
  • the rectangular frame of the frame 11 is on the front feed side of the vibrator 10 and on the opposite rear each with a support plate 13 or 13 ', the support plates 13 or 13' ausfacht.
  • the support brackets 16 are in the niche, which is bounded at the periphery of the portal square tube.
  • a hollow casting 17 for example, a cylinder head is placed, the casting core to be removed from molding sand.
  • a clamping lever 18 can be seen, which can be moved to set the casting 17 by means of a clamping operation down.
  • a double-acting pneumatic cylinder 19 by the control of the clamping lever 18 can be pivoted in the vertical plane between the support brackets 16 for fixing and loosening of the casting 17 in opposite directions.
  • two pneumatic tapping hammers 20 are arranged on the turntable 15, serving as a hammer head plunger are directed vertically downwards on the casting 17.
  • a rotation of the drum 14 is provided under Haittelbe sprayung the vibrator 10, wherein the drum 14, for example, of their in Fig. 1 and 2 shown knock position by 180 degrees in their in Fig. 3 shown turning position can be rotated.
  • a favorable turning mode must be found after the peculiarities of the respective casting series.
  • the effect of the vibrator 10 may be particularly effective in some castings, when the drum is first rotated under Hinttelbelastung by 90 degrees, then shaken in the intermediate position of 90 degrees and then further rotated in the discharge position.
  • a continuous rotation of the drum 14 may also be provided.
  • the coring is completed and the casting 17 can be removed after rotation of the drum 14 in the knocking position.
  • This state can also be detected in a simple manner by means of sensors, as a result of which the coring process can proceed fully automatically with little control effort.
  • the vibration motors 21 are in the tapered central region of the drum 14th between the turntables 15 and 15 ', two vibration motors 21 are arranged, which are firmly screwed to the top or bottom of an intermediate frame 22.
  • the vibration motors 21 are commercially available embodiments in which a flywheel rotates eccentrically, the unbalance leads to the Rüttelschwingungen.
  • the intermediate frame with a rectangular basic shape is suspended on opposite sides in each case via two rubber bearings 23 elastically on parallel opposite drum walls, whereby it can swing relative to the drum 14 over the spring travel of the rubber bearing. Furthermore, it is connected via two gooseneck-shaped lever arms with the two support brackets 16. The vibration of vibration of the vibration motors 21 is thus introduced via the support brackets 16 in the cast-to-be-gutted 17.
  • the turntable 15 and 15 ' are mounted on mushroom-shaped guide rollers 24 which are distributed over the circumference of the associated turntable 15 and 15'.
  • the guide rollers 24 are from the inner broad side of the support plate 13 and 13 'from and engage around the circumference of the associated turntable 15 and 15'.
  • the cylindrical shaft of the guide rollers 24 here consists of rotatable bearing sleeves and thereby rotates when turning the turntable 15 and 15 'on the circumference of the associated turntable 15 and 15' from.
  • a drive means for the drum 14 is used a robust chain drive.
  • the turntable 15 ' is provided with a toothed ring on which a roller chain 25 running around it runs, which in turn is driven by a pinion 26.
  • the pinion 26 is arranged at a distance above the turntable 15 'on the support plate 13', whereby the roller chain 25 is held taut over chain tensioning devices.
  • the jogger 10 could be provided with a corresponding design on the accessible side of the turntable 15 'with a mirror-symmetrical arrangement of support brackets 16, clamping lever 18 and knock hammers 20 to allow the parallel Entkernung of two castings by means of a vibrator.
  • the inventive method comprises a total of four operations with sometimes several steps.
  • the casting 17 is placed on the support brackets 16 and firmly clamped by pivoting down the clamping lever 18 by means of the extension after driving out pneumatic cylinder 19 between support brackets 16 and clamping lever 18.
  • the casting 17 is vibrated while remaining in the receptacle of the vibrator 10 and thereby rotated in the direction of the discharge position. This results in the friction of the molding sand lumps for crumbling the core sand.
  • the casting is rotated in the fourth operation by further or by turning back the drum 14 in its knocking position and the pneumatic cylinder 19 is raised, after which the clamping device is released and the gutted casting 17 can be removed from the support brackets 16.

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

Abstract

Vibrating machine (10) for removing core sand from hollow castings (17) comprises a rotating drum (14) which holds the casting and is mounted in a frame (11). The casting is hammered to loosen the sand and it is then turned to a position where it can fall out. An independent claim is included for a method for removing core sand from hollow castings comprising: (A) fixing the casting in a holder; (B) using a hammer to loosen the sand; and turning the casting to a position where the sand can fall out, while still vibrating it.

Description

Die Erfindung betrifft eine Rüttelvorrichtung und ein Verfahren zum Entfernen des Kernsandes aus hohlen Gussstücken mittels einer Rüttelvorrichtung nach der im Oberbegriff von Patentanspruch 1 näher definierten Art.The invention relates to a vibrating device and a method for removing the core sand from hollow castings by means of a vibrating device according to the closer defined in the preamble of claim 1. Art.

Eine derartige Rüttelvorrichtung ist z. B. in der DE 69230160 T2 zur europäischen Patentschrift EP 0524302 B1 offenbart. Das Gussstück wird dabei im Innern der Maschine zwischen einer Stützplatte und einer Spannplatte eingeklemmt, wonach es klopfsicher festgelegt ist. In der Stützplatte, die in einer Querebene der insgesamt länglichen Rüttelmaschine nahe einer ihrer Stirnseiten angeordnet ist, befindet sich zentral eine Durchtrittsöffnung für einen Klopfhammer, der horizontal verschiebbar an der Rüttelmaschine angeordnet ist. Gegen die Klopfrichtung des Drucklufthammers ist die linear schiebegeführte Gussstückaufnahme federnd nachgiebig über das Gaspolster eines Niederdruckzylinders abgestützt. Der Führungsschlitten der Gussstückaufnahme ist über vier parallelogrammartige Pendelstützen aufgehängt und wird über einen Kurbelantrieb mit Doppelexzenter von einem Getriebemotor über einen kurzen Verschiebeweg hin- und herbewegt. Durch diese Pendelschwingung mit kurzem Hub entsteht bei jedem Richtungswechsel ein Ruck, so dass aus den Ruckbeschleunigungen die erwünschte Rüttelbewegung zur weiteren Zerkleinerung der durch Klopfen des Drucklufthammers vom Gussstück abgelösten Kernsandbrocken entsteht. Nachdem sich der Gusskern aufgelöst hat, ist vorgesehen, dass das Gussstück gelöst und mit der offenen Seite nach unten auf die Aufnahme gelegt wird, wodurch der gelöste Kernsand durch Schwerkraftwirkung herausrieseln und z.B. auf ein entsprechend angeordnetes Förderband zum Abtransport des Formsandes gelangen kann. Als nachteilig kann bei dieser Rüttelmaschine der Umstand angesehen werden, dass das Lösen der Spanneinrichtung und das anschließende Umlagern sowie das ggf. erneut erforderliche Festlegen des Gussstücks manuell vorgenommen werden muss, was relativ zeitaufwändig ist. Da das Gussstück dabei im Innern der Rüttelmaschine und dadurch in einem Abstand zur Bedienperson verbleibt, sind zudem die ergonomischen Bedingungen für die Bedienperson ungünstig.Such a vibrator is z. B. in the DE 69230160 T2 to the European patent specification EP 0524302 B1 disclosed. The casting is clamped inside the machine between a support plate and a clamping plate, after which it is fixed knock resistant. In the support plate, which is arranged in a transverse plane of the overall elongated vibrating machine near one of its end faces, is centrally located one Passage opening for a knocking hammer, which is arranged horizontally displaceable on the vibrating machine. Against the knocking direction of the pneumatic hammer, the linear slide-guided casting receiver is resiliently supported via the gas cushion of a low-pressure cylinder. The guide carriage of the casting receptacle is suspended by four parallelogram-like pendulum supports and is reciprocated by a geared motor via a short displacement by means of a double eccentric crank drive. This pendulum oscillation with a short stroke creates a jerk with each change of direction, so that the desired jogging movement results from the jerk accelerations for further comminution of the core sand chunks detached from the casting by knocking the compressed air hammer. After the casting core has dissolved, it is provided that the casting is loosened and placed with the open side down on the recording, whereby the dissolved core sand trickle out by gravity and, for example, can reach a correspondingly arranged conveyor belt for removing the molding sand. A disadvantage can be considered in this vibrator the fact that the release of the clamping device and the subsequent repositioning and possibly re-required setting of the casting must be done manually, which is relatively time consuming. Since the casting remains inside the vibrating machine and thus at a distance to the operator, In addition, the ergonomic conditions are unfavorable for the operator.

Des Weiteren ist aus der DE 2947795 C2 eine Vorrichtung zum Entfernen von Kernen aus Gussstücken bekannt, wobei die Aufnahme für das Gussstück selbst ergonomisch günstig auf einer leicht zugänglichen Seite der Vorrichtung angeordnet ist. Bei der Vorrichtung handelt es sich jedoch um einen pyramidenförmigen Tragtisch mit sechs Umfangswänden, der karusselartig drehangetrieben ist. An den Umfangswänden dieses Tragtisches befindet sich jeweils eine Aufnahmevorrichtung für ein Gussstück, die zwei Tragkonsolen und eine in einer Ebene zwischen diesen bewegten Haltearm umfasst. Durch entsprechende Teildrehung des Drehtisches werden die Gussstücke somit nacheinander in einer Überdeckungsstellung zu einem Schlaghammer einer Klopfstation positioniert, wonach das entsprechend positionierte Gussstück vom Schlaghammer geklopft werden kann. Diese Vorrichtung arbeitet ausschließlich mit der Klopftechnik, wodurch sich die Sandstrahlwirkung von Kernbrocken und Sandkörnern nur sehr unvollkommen für den Entkernungsvorgang nutzen lässt. Somit ist diese Vorrichtung zum Entkernen schlagempfindlicher Gussstücke wenig geeignet.Furthermore, from the DE 2947795 C2 a device for removing cores from castings known, wherein the receptacle for the casting itself is ergonomically located on an easily accessible side of the device. However, the device is a pyramidal support table with six peripheral walls, which is rotationally driven like a carousel. On the peripheral walls of this support table there is in each case a receiving device for a casting, which comprises two support brackets and one in a plane between these moving support arm. By appropriate partial rotation of the turntable, the castings are thus positioned one after the other in a covering position to a percussion hammer a knocking station, after which the appropriately positioned casting can be knocked by the percussion hammer. This device works exclusively with the knocking technique, whereby the sandblasting effect of core chunks and grains of sand can be used only very imperfectly for the Entkernungsvorgang. Thus, this device is not very suitable for coring impact sensitive castings.

Es ist daher Aufgabe der vorliegenden Erfindung, eine Rüttelvorrichtung und ein zugehöriges Verfahren zum Entfernen des Kernsandes aus hohlen Gussstücken dahingehend zu verbessern, dass ein schnelles und vollständiges Entfernen des Kernsandes unter günstigen ergonomischen Bedingungen für die Bedienperson möglich ist.It is therefore an object of the present invention, a vibrator and an associated method for removing the core sand from hollow castings to the effect To improve that a quick and complete removal of the core sand under favorable ergonomic conditions for the operator is possible.

Erfindungsgemäß wird diese Aufgabe durch eine Vorrichtung mit den in Anspruch 1 genannten Merkmalen und durch ein Verfahren mit den in Anspruch 15 genannten Merkmalen gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.According to the invention this object is achieved by a device having the features mentioned in claim 1 and by a method having the features mentioned in claim 15. Advantageous embodiments and further developments of the invention are specified in the dependent claims.

Da sich der die Aufnahmeeinrichtung für das Gussstück aufweisende Teil der Rüttelvorrichtung erfindungsgemäß im Gestellrahmen drehen lässt, kann das in der Aufnahmeeinrichtung festgelegte Gussstück von seiner Klopfstellung zum Ablösen des Kernsandes in eine Ausschüttstellung für den abgelösten Kernsand gedreht werden, ohne dass die Spanneinrichtung vorher umständlich gelöst werden müsste. Hierdurch ergibt sich eine vereinfachte Handhabung der Rüttelvorrichtung für deren Bedienperson bzw. für einen zur Automatisierung eingesetzten Roboter. Unter Klopfstellung wird hierbei die Ausgangsposition des Gussstücks verstanden, in der die Ausgießöffnung des Gussstücks nach oben oder zur Seite gewandt ist, was in Abhängigkeit der Gestalt des Gussstücks und der Lage des Hohlraums variieren kann. Unter Ausschüttstellung wird demgegenüber eine Position des Gussstücks verstanden, in der die Hohlraumöffnung des Gussstücks nach unten gewandt ist, so dass der Kernsand unter Schwerkrafteinfluss und insbesondere unter der Einwirkung von Vibrationen restlos aus dem Hohlraum des Gussstücks herausfallen bzw. herausrieseln kann.Since the receiving device for the casting having part of the vibrator can rotate according to the invention in the frame, the fixed in the receiving device casting can be rotated from its knocking position for detachment of the core sand in a discharge position for the detached core sand without the clamping device are solved before cumbersome would. This results in a simplified handling of the vibrator for the operator or for a robot used for automation. By knocking is here understood the initial position of the casting, in which the pouring of the casting is turned upwards or to the side, which may vary depending on the shape of the casting and the position of the cavity. By discharge, on the other hand, a position of the casting is understood in which the cavity opening of the casting is turned downwards, so that the Kernsand under the influence of gravity and in particular under the action of vibration completely fall out of the cavity of the casting or trickle out.

Vorzugsweise verläuft die Drehachse des drehbeweglichen Teils der Rüttelvorrichtung annähernd horizontal, da das Gussstück hierdurch während seiner Drehung innerhalb einer vertikalen Querebene der Rüttelvorrichtung verbleibt. Hierdurch bleibt die Zugänglichkeit des Gussstücks für die Bedienperson während der Drehung erhalten und das Gussstück muss mittels der Spanneinrichtung nur in einer Ebene festgelegt werden, was mit einfacheren Spannelementen möglich ist.Preferably, the axis of rotation of the rotatable part of the vibrator device is approximately horizontal, as the casting thereby remains within a vertical transverse plane of the vibrator during its rotation. As a result, the accessibility of the casting for the operator during rotation is maintained and the casting must be fixed by means of the clamping device in one plane, which is possible with simpler clamping elements.

Vorteilhaft ist die den Gusskern enthaltende Hohlraumöffnung des Gussstücks in der Ausschüttstellung in eine Stellung überführt, in der sie nach unten gewandt ist.Advantageously, the casting core containing cavity opening of the casting is transferred in the discharge position in a position in which it is turned down.

Eine sehr stabile Lagerung des drehbeweglichen Teils der Rüttelvorrichtung wird möglich, wenn dieser als Trommel ausgebildet ist, die über Drehteller an ihren Trommelenden auf entgegengesetzten Seiten am Gestellrahmen gelagert ist.A very stable storage of the rotatable part of the vibrator is possible if this is designed as a drum which is mounted on turntables at their drum ends on opposite sides of the frame frame.

Um unter den rauen Betriebsbedingungen der Rüttelvorrichtung eine sehr robuste Lagerung der Trommel zu erreichen, ist diese vorzugsweise über Führungsrollen gelagert, die über den Umfang der Drehteller verteilt angeordnet sind und die zugeordneten Drehteller am Außenumfang führen. Für den motorischen Drehantrieb der Trommel ist ein ebenfalls sehr robuster Kettentrieb besonders geeignet.In order to achieve a very robust storage of the drum under the harsh operating conditions of the vibrator, this is preferably via guide rollers mounted, which are arranged distributed over the circumference of the turntable and lead the associated turntable on the outer circumference. For the motorized rotary drive of the drum is also a very robust chain drive particularly suitable.

Um in der Rüttelvorrichtung durch Vibrationsmotoren gegenläufig wirkende Massenschwingungen erzeugen zu können, sind einer oder mehrere Vibrationsmotoren der Trommel über einen Zwischenrahmen elastisch gegenüber dem Gestellrahmen aufgehängt.In order to produce in the vibrator by vibrating motors counteracting mass vibrations, one or more vibratory motors of the drum via an intermediate frame are elastically suspended from the frame frame.

Eine bequeme Zugänglichkeit der Aufnahme für das Gussstück ergibt sich, wenn die Aufnahme auf einer zugänglichen Stirnseite eines Drehtellers der Trommel angeordnet ist. Das Gussstück lässt sich auf einfache Weise durch Aufsetzen auf zwei Tragkonsolen in die Aufnahme der Rüttelvorrichtung stellen, die im Abstand voneinander aus dem Drehteller der Trommel herausstehen. Vorteilhaft wird das Gussstück durch einen mit einer Hilfskraft schwenkbeweglichen Spannhebel, in seine Auflagestellung auf den Konsolen niedergedrückt. Aufgrund der relativ kleinen Querschnitte der beiden Konsolen und des gegenüberliegenden Spannhebels wird das Ausfließen des Kernsandes aus dem Gussstück in keiner Drehstellung der Trommel nennenswert behindert.A convenient accessibility of the receptacle for the casting is obtained when the receptacle is arranged on an accessible end face of a turntable of the drum. The casting can be easily put by placing it on two support brackets in the recording of the vibrator, which protrude at a distance from each other from the turntable of the drum. Advantageously, the casting is depressed by a pivotable with an auxiliary power clamping lever in its resting position on the consoles. Due to the relatively small cross sections of the two consoles and the opposite clamping lever, the outflow of the core sand from the casting in any rotational position of the drum is significantly impeded.

Damit automatisch eine richtige Zuordnung des Klopfhammers bzw. der Klopfhämmer zum festgelegten Gussstück erfolgt, ist jeder Klopfhammer der Rüttelvorrichtung unter Zuordnung zur Gussstückaufnahme mitdrehend am Drehteller angeordnet. Gerade bei schlagempfindlichen Gussstücken ist es zweckmäßig, anstelle eines schweren Klopfhammers mehrere leichte, parallel arbeitende Klopfhämmer zu verwenden. Bei bekannten Pneumatikhämmern nach dem Stößelprinzip besteht wegen ihrer schlanken Bauweise problemlos die Möglichkeit, der Aufnahme für das Gussstück zwei, drei oder auch mehr Klopfhämmer zuzuordnen.Thus automatically a correct assignment of the knocking hammer or the hammer to the specified casting takes place, each rapping hammer of the vibrator is arranged co-rotating with the casting holder on the turntable. Especially with shock-sensitive castings, it is expedient to use instead of a heavy knocking hammer several light, parallel-acting knock hammers. In known pneumatic hammers on the plunger principle is due to their slim design easily the opportunity to assign the recording for the casting two, three or more knock hammers.

Um die Herstellkosten für die Rüttelvorrichtung gering zu halten, wird der tragende Rahmen des Gestell vorzugsweise quaderförmig gestaltet und aus abgelängten Halbzeugprofilen zusammengesetzt. Für den Gestellrahmen besonders geeignet sind geschlossene Hohlprofile, wobei Vierkantprofile z. B. durch Schraub- oder auch durch Schweißverbindungen besonders problemlos und sauber zu fügen sind.In order to keep the manufacturing costs for the vibrator low, the supporting frame of the frame is preferably cuboid shaped and composed of cut to length semifinished profiles. For the frame frame are particularly suitable closed hollow sections, with square profiles z. B. by screw or by welding joints are particularly problem-free and clean to add.

Durch die erfindungsgemäße Rüttelvorrichtung wird ein neues Verfahren zum Entfernen des Kernsandes aus hohlen Gussstücken möglich, das eine deutlich schnellere Entkernung des Gussstücks ermöglicht als herkömmliche Verfahren, bei denen das Gussstück nur gehämmert und gerüttelt wird. Dieser Vorteil liegt darin begründet, dass das Gussstück nicht mehr umgespannt werden muss, sondern bis zum Abschluss der Entkernung in seiner Aufnahme verbleibt. Durch das Drehen der Trommel entstehen auch keine Zeitverluste, wenn während der Drehung der Trommel gleichzeitig gerüttelt wird. Möglicherweise kann die Trommel aber auch bereits in der letzten Klopfphase gedreht werden, um die Effizienz des Verfahrens weiter zu steigern.By means of the vibrating device according to the invention, a new method for removing the core sand from hollow castings is made possible, which enables a much faster gutting of the casting than conventional methods in which the casting is only hammered and shaken. This advantage is due to the fact that the casting does not have to be re-clamped, but remains in its receptacle until completion of the guttering. By turning the drum arise no loss of time if shaken during the rotation of the drum at the same time. However, it may also be possible to rotate the drum in the last knock phase in order to further increase the efficiency of the process.

Weitere vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den restlichen Unteransprüchen. Nachfolgend sind Ausführungsbeispiele der Erfindung anhand der Zeichnung prinzipmäßig dargestellt.Further advantageous embodiments and modifications of the invention will become apparent from the remaining dependent claims. Embodiments of the invention are shown in principle with reference to the drawings.

Es zeigen:

Fig. 1
eine perspektivische Schrägansicht der gesam-ten Rüttelvorrichtung,
Fig. 2
die Beschickungsseite der Rüttelvorrichtung in Vorderansicht,
Fig. 3
die Beschickungsseite gemäß Fig. 2 bei gedrehter Gussstückaufnahme,
Fig. 4
eine Seitenansicht der Rüttelvorrichtung, und
Fig. 5
eine Unteransicht der Rüttelvorrichtung.
Show it:
Fig. 1
a perspective oblique view of the entire Rüttelvorrichtung,
Fig. 2
the feed side of the vibrator in front view,
Fig. 3
the loading side according to Fig. 2 with cast piece shot turned,
Fig. 4
a side view of the vibrator, and
Fig. 5
a bottom view of the vibrator.

In Fig. 1 ist eine Rüttelvorrichtung 10 zu sehen, die zum Entfernen von Gusskernen aus den Hohlräumen von Gussstücken dient. Diese Rüttelvorrichtung 10 ist mittels eines Gestells 11 insgesamt quaderförmig ausgebildet, wobei entlang den Kanten des Quaders jeweils ein Vierkantrohr mit gleichem Querschnitt verläuft. Die Vierkantrohre sind handelsübliche Stahlrohrhalbzeuge, die durch Ablängen mittels eines Trennwerkzeuges zugeschnitten und über aufgeschweißte Flanschplatten 12 an ihren Enden miteinander verschraubt sind. Hierdurch ergibt sich ein insgesamt sehr belastungsfähiger Rohrrahmenkäfig als Basis für das Gestell 11. Der Rechteckrahmen des Gestells 11 ist auf der vorderen Beschickungsseite der Rüttelvorrichtung 10 sowie auf der gegenüberliegenden Rückseite jeweils mit einer Tragplatte 13 bzw. 13' ausgefacht, wobei die Tragplatten 13 bzw. 13' auf der Innenseite ihres zugeordneten Rechteckrahmens des Gestells 11 aufliegend befestigt und somit sehr stabil angebracht sind. Beide Tragplatten 13 und 13' weisen im Mittelbereich zueinander spiegelsymmetrische runde Öffnungen auf, durch deren Kreismitten die horizontale Drehachse einer Trommel 14 verläuft, die über Drehteller 15 bzw. 15' an ihren Enden und über die Tragplatten 13 und 13' im Gestell 11 gelagert ist, wie an späterer Stelle noch beschrieben werden wird. Die planen Drehteller 15 und 15' liegen jeweils in einem geringen Abstand auf der Innenseite der ihnen zugeordneten Tragplatte 13 bzw. 13' zu deren Ebene parallel und überdecken dabei die runde Mittelöffnung in der Tragplatte 13 bzw. 13'. Der Durchmesser der Drehteller 15 und 15' entspricht dabei nahezu dem Abstand der seitlichen Vierkantrohre voneinander.In Fig. 1 For example, a vibrating device 10 is shown for removing cores from the cavities of Castings serves. This vibrator 10 is formed by means of a frame 11 as a whole cuboid, wherein along the edges of the cuboid in each case a square tube runs with the same cross-section. The square tubes are commercially available semi-finished steel tubes, which are cut to length by means of a cutting tool and screwed together via welded flange plates 12 at their ends. The rectangular frame of the frame 11 is on the front feed side of the vibrator 10 and on the opposite rear each with a support plate 13 or 13 ', the support plates 13 or 13' ausfacht. 13 'mounted on the inside of their associated rectangular frame of the frame 11 resting and thus are mounted very stable. Both support plates 13 and 13 'have in the central region to each other mirror-symmetrical round openings through the circular centers of the horizontal axis of rotation of a drum 14 which is mounted on turntables 15 and 15' at their ends and on the support plates 13 and 13 'in the frame 11 , as will be described later. The plan turntable 15 and 15 'are each at a small distance on the inside of their associated support plate 13 and 13' parallel to their plane and thereby cover the round central opening in the support plate 13 and 13 '. The diameter the turntable 15 and 15 'corresponds to almost the distance of the lateral square tubes from each other.

Durch eine Öffnung im Drehteller 15, die im unteren Bereich angeordnet ist, stehen zwei Tragkonsolen 16 aus der Trommel 14 heraus, die sich auf gleicher Höhe befinden aber in einem seitlichen Abstand voneinander angeordnet sind. Mit ihrer überwiegenden Länge befinden sich die Tragkonsolen 16 dabei in der Nische, die am Umfang vom Portal aus Vierkantrohr begrenzt ist. Auf die Tragkonsolen 16 ist ein hohles Gussstück 17, z.B. ein Zylinderkopf aufgesetzt, dessen Gusskern aus Formsand entfernt werden soll. Oberhalb des aufgesetzten Gussstücks 17 ist ein Endbereich eines Spannhebels 18 zu sehen, der zum Festlegen des Gussstücks 17 mittels eines Spannvorganges nach unten verfahren werden kann. Hierzu dient ein doppeltwirkender Pneumatikzylinder 19, durch dessen Ansteuerung der Spannhebel 18 in der vertikalen Ebene zwischen den Tragkonsolen 16 zum Festlegen und Lösen des Gussstücks 17 in entgegengesetzten Richtungen geschwenkt werden kann. Oberhalb der Spanneinrichtung sind am Drehteller 15 zwei pneumatische Klopfhämmer 20 angeordnet, deren als Hammerkopf dienende Stößel senkrecht nach unten auf das Gussstück 17 gerichtet sind. Durch pulsierendes Ausfahren der Klopfhammerstößel und Auftreffen derselben am Gussstück, wird das Gussstück 17 somit in bekannter Weise geklopft, wodurch der Gusskern nach einiger Zeit mittelbar zu mehr oder weniger groben Brocken zerschlagen wird.Through an opening in the turntable 15, which is arranged in the lower region, stand two support brackets 16 out of the drum 14, which are located at the same height but are arranged at a lateral distance from each other. With their predominant length, the support brackets 16 are in the niche, which is bounded at the periphery of the portal square tube. On the support brackets 16, a hollow casting 17, for example, a cylinder head is placed, the casting core to be removed from molding sand. Above the attached casting 17 is an end portion of a clamping lever 18 can be seen, which can be moved to set the casting 17 by means of a clamping operation down. Serves this purpose, a double-acting pneumatic cylinder 19, by the control of the clamping lever 18 can be pivoted in the vertical plane between the support brackets 16 for fixing and loosening of the casting 17 in opposite directions. Above the tensioning device 15 two pneumatic tapping hammers 20 are arranged on the turntable 15, serving as a hammer head plunger are directed vertically downwards on the casting 17. By pulsating extension of the hammer plunger hammer and impinging them on the casting, the casting 17 is thus knocked in a known manner, whereby the casting core after some time indirectly smashed into more or less coarse chunks.

Um auf schnelle und bequeme Weise ein Entkernen von Gussstücken zu ermöglichen, ist eine Drehung der Trommel 14 unter Rüttelbeanspruchung der Rüttelvorrichtung 10 vorgesehen, wobei die Trommel 14 z.B. von ihrer in Fig. 1 und 2 gezeigten Klopfstellung um 180 Grad in ihre in Fig. 3 gezeigte Wendestellung gedreht werden kann. Ein günstiger Drehmodus muss nach den Besonderheiten der jeweiligen Gussstückserie aufgefunden werden. So kann die Wirkung der Rüttelvorrichtung 10 bei einigen Gussstücken besonders effektiv sein, wenn die Trommel zunächst unter Rüttelbelastung um 90 Grad gedreht, dann in der Zwischenstellung von 90 Grad gerüttelt und danach in die Ausschüttstellung weitergedreht wird. Selbstverständlich kann nach dem Klopfen auch eine kontinuierliche Drehung der Trommel 14 vorgesehen werden. Sobald die Bedienperson feststellt, dass in der Ausschüttstellung kein Kernsand mehr aus dem Gussstück rieselt, ist die Entkernung abgeschlossen und das Gussstück 17 kann nach Drehung der Trommel 14 in die Klopfstellung abgenommen werden. Dieser Zustand kann auch auf einfache Weise sensorisch erfasst werden, wodurch der Entkernungsvorgang mit geringem Steueraufwand vollautomatisch ablaufen kann.In order to enable a coring of castings in a quick and convenient manner, a rotation of the drum 14 is provided under Rüttelbeanspruchung the vibrator 10, wherein the drum 14, for example, of their in Fig. 1 and 2 shown knock position by 180 degrees in their in Fig. 3 shown turning position can be rotated. A favorable turning mode must be found after the peculiarities of the respective casting series. Thus, the effect of the vibrator 10 may be particularly effective in some castings, when the drum is first rotated under Rüttelbelastung by 90 degrees, then shaken in the intermediate position of 90 degrees and then further rotated in the discharge position. Of course, after the knocking, a continuous rotation of the drum 14 may also be provided. Once the operator determines that no core sand trickles out of the casting in the discharge position, the coring is completed and the casting 17 can be removed after rotation of the drum 14 in the knocking position. This state can also be detected in a simple manner by means of sensors, as a result of which the coring process can proceed fully automatically with little control effort.

Wie in Verbindung mit den Fig. 4 und 5 zu erkennen ist, sind im verjüngten Mittelbereich der Trommel 14 zwischen den Drehtellern 15 und 15' zwei Vibrationsmotoren 21 angeordnet, die mit der Ober- bzw. Unterseite eines Zwischenrahmens 22 fest verschraubt sind. Bei den Vibrationsmotoren 21 handelt es sich um handelsübliche Ausführungsformen, bei der eine Schwungmasse exzentrisch rotiert, wobei die Unwucht zu den Rüttelschwingungen führt. Der Zwischenrahmen mit rechteckiger Grundform ist auf entgegengesetzten Seiten jeweils über zwei Gummilager 23 elastisch an parallel gegenüberliegenden Trommelwänden aufgehängt, wodurch er über den Federweg der Gummilager relativbeweglich zur Trommel 14 schwingen kann. Ferner ist er über zwei schwanenhalsförmige Hebelarme mit den beiden Tragkonsolen 16 verbunden. Die Rüttelschwingung der Vibrationsmotoren 21 wird somit über die Tragkonsolen 16 in das zu entkernende Gussstück 17 eingeleitet.As in connection with the Fig. 4 and 5 can be seen are in the tapered central region of the drum 14th between the turntables 15 and 15 ', two vibration motors 21 are arranged, which are firmly screwed to the top or bottom of an intermediate frame 22. The vibration motors 21 are commercially available embodiments in which a flywheel rotates eccentrically, the unbalance leads to the Rüttelschwingungen. The intermediate frame with a rectangular basic shape is suspended on opposite sides in each case via two rubber bearings 23 elastically on parallel opposite drum walls, whereby it can swing relative to the drum 14 over the spring travel of the rubber bearing. Furthermore, it is connected via two gooseneck-shaped lever arms with the two support brackets 16. The vibration of vibration of the vibration motors 21 is thus introduced via the support brackets 16 in the cast-to-be-gutted 17.

Um eine robuste Drehlagerung der Trommel 14 zu erreichen, sind die Drehteller 15 und 15' über pilzkopfförmige Führungsrollen 24 gelagert, die über den Umfang des zugeordneten Drehtellers 15 bzw. 15' verteilt angeordnet sind. Die Führungsrollen 24 stehen von der inneren Breitseite der Tragplatte 13 bzw. 13' ab und umgreifen den Umfang des zugeordneten Drehtellers 15 bzw. 15'. Der zylindrische Schaft der Führungsrollen 24 besteht hier aus drehbaren Lagerhülsen und wälzt sich dadurch beim Drehen der Drehteller 15 bzw. 15' auf dem Umfang des zugeordneten Drehtellers 15 bzw. 15' ab. Als Antriebsmittel für die Trommel 14 dient ein robuster Kettenantrieb. Hierzu ist der Drehteller 15' mit einem Zahnring versehen, auf dem eine ihn umschlingende Rollenkette 25 läuft, die ihrerseits von einem Ritzel 26 angetrieben wird. Das Ritzel 26 ist in einem Abstand oberhalb des Drehtellers 15' auf der Tragplatte 13' angeordnet, wodurch die Rollenkette 25 über Kettenspanneinrichtungen straff gespannt gehalten ist.In order to achieve a robust pivot bearing of the drum 14, the turntable 15 and 15 'are mounted on mushroom-shaped guide rollers 24 which are distributed over the circumference of the associated turntable 15 and 15'. The guide rollers 24 are from the inner broad side of the support plate 13 and 13 'from and engage around the circumference of the associated turntable 15 and 15'. The cylindrical shaft of the guide rollers 24 here consists of rotatable bearing sleeves and thereby rotates when turning the turntable 15 and 15 'on the circumference of the associated turntable 15 and 15' from. As a drive means for the drum 14 is used a robust chain drive. For this purpose, the turntable 15 'is provided with a toothed ring on which a roller chain 25 running around it runs, which in turn is driven by a pinion 26. The pinion 26 is arranged at a distance above the turntable 15 'on the support plate 13', whereby the roller chain 25 is held taut over chain tensioning devices.

Die Rüttelvorrichtung 10 könnte bei entsprechender Auslegung auch auf der zugänglichen Seite des Drehtellers 15' mit einer spiegelsymmetrischen Anordnung aus Tragkonsolen 16, Spannhebel 18 und Klopfhämmern 20 versehen sein, um die parallele Entkernung von zwei Gussstücken mittels einer Rüttelvorrichtung zu ermöglichen.The jogger 10 could be provided with a corresponding design on the accessible side of the turntable 15 'with a mirror-symmetrical arrangement of support brackets 16, clamping lever 18 and knock hammers 20 to allow the parallel Entkernung of two castings by means of a vibrator.

Das erfindungsgemäße Verfahren umfasst insgesamt vier Arbeitsgänge mit teilweise mehreren Arbeitsschritten.The inventive method comprises a total of four operations with sometimes several steps.

Im ersten Arbeitsgang wird das Gussstück 17 auf die Tragkonsolen 16 aufgesetzt und durch Herunterschwenken des Spannhebels 18 mittels des nach Ansteuerung ausfahrenden Pneumatikzylinders 19 zwischen Tragkonsolen 16 und Spannhebel 18 fest eingeklemmt.In the first step, the casting 17 is placed on the support brackets 16 and firmly clamped by pivoting down the clamping lever 18 by means of the extension after driving out pneumatic cylinder 19 between support brackets 16 and clamping lever 18.

Danach wird das Gussstück 17 im zweiten Arbeitsgang von den senkrecht nach unten ausfahrenden Stößeln der beiden Klopfhämmer 20 geklopft, bis der Gusskern zumindest in grobe Brocken zerfallen ist.Thereafter, the casting 17 in the second operation of the vertically downwardly extending plungers knocked knocking hammer 20 until the casting core is at least crumbled into rough pieces.

Im dritten Arbeitsgang wird das Gussstück 17 unter Verbleib in der Aufnahme der Rüttelvorrichtung 10 gerüttelt und dabei in Richtung der Ausschüttstellung gedreht. Hierbei kommt es durch die Reibung der Formsandklumpen zum Zerbröseln des Kernsandes.In the third operation, the casting 17 is vibrated while remaining in the receptacle of the vibrator 10 and thereby rotated in the direction of the discharge position. This results in the friction of the molding sand lumps for crumbling the core sand.

Danach wird das Gussstück im vierten Arbeitgang durch Weiter- oder durch Zurückdrehen der Trommel 14 in seine Klopfstellung gedreht und der Pneumatikzylinder 19 hochgefahren, wonach die Spanneinrichtung gelöst ist und das entkernte Gussstück 17 von den Tragkonsolen 16 abgenommen werden kann.Thereafter, the casting is rotated in the fourth operation by further or by turning back the drum 14 in its knocking position and the pneumatic cylinder 19 is raised, after which the clamping device is released and the gutted casting 17 can be removed from the support brackets 16.

Da der Rüttelbetrieb der Vorrichtung 10 auch in der Ausschüttstellung aufrechterhalten wird, kann die vollständige Entfernung des Kernsandes in dieser Position zuverlässig erreicht werden.Since the shaking operation of the device 10 is maintained even in the discharge position, the complete removal of the core sand in this position can be reliably achieved.

Claims (16)

Rüttelvorrichtung zum Entfernen des Kernsandes aus hohlen Gussstücken, die ein Gestell mit einer Aufnahmeeinrichtung zum klopfsicheren Festlegen des Gussstücks und einen Vibrationsmotor zum Erzeugen der Rüttelschwingungen aufweist, wobei ein Austragen des Kernsandes aus dem Gussstück durch Schwerkraftwirkung vorgesehen ist,
dadurch gekennzeichnet, dass
ein die Aufnahmeeinrichtung für das Gussstück (17) aufweisender Teil der Rüttelvorrichtung (10) drehbeweglich am Gestell (11) gelagert ist, wodurch das in der Aufnahmeeinrichtung festgelegte Gussstück (17) von einer Klopfstellung zum Ablösen des Kernsandes in eine Ausschüttstellung zu drehen ist.A vibrating device for removing the core sand from hollow castings, comprising a frame with a receiving device for tamper-proof setting of the casting and a vibration motor for generating the Rüttelschwingungen, wherein a discharge of the core sand from the casting by gravity is provided
characterized in that
a part of the vibrator device (10) having the receiving device for the casting (17) is rotatably mounted on the frame (11), whereby the casting (17) fixed in the receiving device is to be turned from a knocking position for detaching the core sand into a dispensing position. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass
die Drehachse des drehbeweglichen Teils der Rüttelvorrichtung (10) annähernd horizontal verläuft.Device according to claim 1,
characterized in that
the axis of rotation of the rotatable part of the vibrator (10) extends approximately horizontally. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet, dass
die Ausschüttstellung eine Wendestellung der Klopfstellung ist.Device according to claim 2,
characterized in that
the discharge position is a reversing position of the knocking position. Vorrichtung nach Anspruch 2 oder 3,
dadurch gekennzeichnet, dass
der drehbewegliche Teil der Rüttelvorrichtung (10) als Trommel (14) ausgebildet ist, welche über Drehteller (15, 15') an den Trommelenden auf entgegengesetzten Seiten am Gestell (11) gelagert ist.Device according to claim 2 or 3,
characterized in that
the rotatable part of the vibrating device (10) is designed as a drum (14) which is mounted on the drum ends on opposite sides of the frame (11) via turntables (15, 15 '). Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet, dass
die Drehteller (15, 15') jeweils über mehrere zugeordnete Führungsrollen (24) an ihrem Außenumfang gelagert sind.Device according to claim 4,
characterized in that
the turntables (15, 15 ') are each mounted on a plurality of associated guide rollers (24) on its outer circumference. Vorrichtung nach Anspruch 4 oder 5,
dadurch gekennzeichnet, dass
ein Drehteller (15') der Trommel (14) mittels eines Kettenantriebes drehangetrieben ist.Device according to claim 4 or 5,
characterized in that
a turntable (15 ') of the drum (14) is rotationally driven by means of a chain drive. Vorrichtung nach einem der Ansprüche 4 bis 6,
dadurch gekennzeichnet, dass
jeder Vibrationsmotor (21) der Trommel (14) über einen Zwischenrahmen (22) elastisch aufgehängt ist.Device according to one of claims 4 to 6,
characterized in that
each vibration motor (21) of the drum (14) is suspended elastically via an intermediate frame (22). Vorrichtung nach einem der Ansprüche 4 bis 7,
dadurch gekennzeichnet, dass
das Gussstück (17) in einer Aufnahme festlegbar ist, die auf einer zugänglichen Stirnseite eines der Drehteller (15) angeordnet ist.Device according to one of claims 4 to 7,
characterized in that
the casting (17) can be fixed in a receptacle which is arranged on an accessible end face of one of the turntables (15). Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet, dass
aus der Stirnseite des Drehtellers (15) im Abstand voneinander zwei Tragkonsolen (16) als Stützen zur Auflage des Gussstücks (17) herausstehen.Device according to claim 8,
characterized in that
from the front side of the turntable (15) at a distance from each other two support brackets (16) as supports for supporting the casting (17) protrude. Vorrichtung nach Anspruch 9,
dadurch gekennzeichnet, dass
das Gussstück (17) in seiner Auflagestellung auf den Tragkonsolen (16) durch eine Spanneinrichtung niedergehalten ist.Device according to claim 9,
characterized in that
the casting (17) is held down in its support position on the support brackets (16) by a tensioning device. Vorrichtung nach Anspruch 10,
dadurch gekennzeichnet, dass
die Spanneinrichtung einen in einer etwa mittig zwischen den Tragkonsolen (16) verlaufenden Ebene bewegten Spannhebel (18) umfasst, der von einem doppeltwirkenden pneumatischen Arbeitselement angetrieben ist.Device according to claim 10,
characterized in that
the tensioning device comprises a clamping lever (18) which moves in a plane extending approximately centrally between the support brackets (16) and which extends from a double-acting pneumatic working element is driven. Vorrichtung nach einem der Ansprüche 8 bis 11,
dadurch gekennzeichnet, dass
am Drehteller (15) der Trommel(14) wenigstens ein motorisch angetriebener Klopfhammer (20) im Abstand zur Aufnahme des Gussstücks (17) mitdrehsicher angeordnet ist.Device according to one of claims 8 to 11,
characterized in that
on the turntable (15) of the drum (14) at least one motor-driven knock hammer (20) at a distance from the receiving of the casting (17) is arranged mitdrehsicher. Vorrichtung nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet, dass
das tragende Gestell (11) ein quaderförmiger Rahmenkäfig ist, der aus auf Länge geschnittenen Halbzeugprofilen gefügt ist.Device according to one of claims 1 to 12,
characterized in that
the supporting frame (11) is a cuboid frame cage, which is joined from cut to length semi-finished profiles. Vorrichtung nach Anspruch 13,
dadurch gekennzeichnet, dass
als Halbzeugprofile geschlossene Hohlprofile vorgesehen sind.Device according to claim 13,
characterized in that
As semi-finished profiles closed hollow sections are provided. Verfahren zum Entfernen des Kernsandes aus hohlen Gussstücken mit einer Rüttelvorrichtung nach einem der Ansprüche 1 bis 14,
dadurch gekennzeichnet, dass
das Gussstück (17) im ersten Arbeitsgang auf eine Aufnahme der Rüttelvorrichtung (10) aufgesetzt und mittels einer Spanneinrichtung an dieser festgelegt wird,
das Gussstück (17) im zweiten Arbeitsgang mittels einer Hammeranordnung der Rüttelvorrichtung (10) geklopft wird,
das Gussstück (17) im dritten Arbeitsgang unter Verbleib in der Aufnahme der Rüttelvorrichtung (10) gerüttelt und in die Ausschüttstellung gedreht wird, und
das Gussstück im vierten Arbeitgang in seine Klopfstellung zurückgedreht, die Spanneinrichtung gelöst und das entkernte Gussstück (17) von der Rüttelvorrichtung (10) abgenommen wird.A method for removing the core sand from hollow castings with a vibrating device according to any one of claims 1 to 14,
characterized in that
the casting (17) is placed in the first operation on a receptacle of the vibrator (10) and fixed thereto by means of a tensioning device,
the casting (17) is knocked in the second operation by means of a hammer arrangement of the vibrator (10),
the casting (17) is vibrated in the third operation while remaining in the receptacle of the vibrator (10) and is rotated into the dispensing position, and
in the fourth operation, the casting is turned back into its knocking position, the tensioning device is released and the gutted casting (17) is removed from the vibrator device (10). Verfahren nach Anspruch 15,
dadurch gekennzeichnet, dass
das Gussstück (17) im Zuge seiner Drehbewegung gerüttelt wird.Method according to claim 15,
characterized in that
the casting (17) is shaken in the course of its rotary motion.
EP08008148A 2007-05-08 2008-04-29 Shaking device and method for removing core sand from hollow moulds Not-in-force EP1995002B1 (en)

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DE102007022043A DE102007022043A1 (en) 2007-05-08 2007-05-08 Vibrating device and method for removing the core sand from hollow castings

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EP1995002A3 EP1995002A3 (en) 2010-01-27
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Cited By (14)

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Publication number Priority date Publication date Assignee Title
WO2015189754A1 (en) 2014-06-09 2015-12-17 O.M.Ler 2000 S.R.L. De-coring vibrator or pneumatic hammer for de- coring of foundry castings with aluminium alloy jacket
WO2015189755A1 (en) 2014-06-09 2015-12-17 O.M.Ler 2000 S.R.L. De-coring vibrator or pneumatic hammer for de-coring of foundry castings with back connectors
WO2015189757A1 (en) 2014-06-09 2015-12-17 O.M.Ler 2000 S.R.L. De-coring vibrator or pneumatic hammer for de-coring of foundry castings with integrated sensor
CN107671268A (en) * 2017-11-27 2018-02-09 河南博威热能科技有限公司 Whirling vibration core breaker is used in heat exchanger casting
DE102018221826A1 (en) 2017-12-14 2019-06-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Manufacturing method for a casting device
CN109365790A (en) * 2018-11-19 2019-02-22 浙江万丰科技开发股份有限公司 A kind of vibration overturning shakeout machinery
AT522125A1 (en) * 2019-02-11 2020-08-15 Fill Gmbh Coring hammer for coring cast workpieces
WO2020163886A1 (en) * 2019-02-11 2020-08-20 Fill Gesellschaft M.B.H. Decoring hammer for decoring castings and decoring machine and method for decoring a casting
CN113316493A (en) * 2019-02-11 2021-08-27 费尔有限公司 Core removing hammer for removing core from casting, core removing machine and method for removing core from casting
WO2020234820A1 (en) * 2019-05-22 2020-11-26 O.M.Ler S.R.L. De-coring machine for de-coring a plurality of foundry castings and method for de-coring
WO2020234818A1 (en) * 2019-05-22 2020-11-26 O.M.Ler S.R.L. De-coring machine for foundry castings with rotating housing for foundry castings and related method for de-coring foundry castings
CN113145794A (en) * 2021-04-29 2021-07-23 共享装备股份有限公司 A can type pattern for large-scale cylinder body
CN113426989A (en) * 2021-06-25 2021-09-24 江苏天宏机械工业有限公司 Vibration shakeout machine
CN113426989B (en) * 2021-06-25 2023-03-03 江苏天宏机械工业有限公司 Vibration shakeout machine

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Publication number Publication date
DE202007018558U1 (en) 2008-11-13
ES2386012T3 (en) 2012-08-07
EP1995002B1 (en) 2012-04-04
PL1995002T3 (en) 2012-09-28
ATE552058T1 (en) 2012-04-15
EP1995002A3 (en) 2010-01-27
DE102007022043A1 (en) 2008-11-13

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