EP1995002B1 - Vibreur et procédé de retrait du sable à noyaux de pièces moulées creuses - Google Patents

Vibreur et procédé de retrait du sable à noyaux de pièces moulées creuses Download PDF

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Publication number
EP1995002B1
EP1995002B1 EP08008148A EP08008148A EP1995002B1 EP 1995002 B1 EP1995002 B1 EP 1995002B1 EP 08008148 A EP08008148 A EP 08008148A EP 08008148 A EP08008148 A EP 08008148A EP 1995002 B1 EP1995002 B1 EP 1995002B1
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EP
European Patent Office
Prior art keywords
casting
drum
knocking
core sand
belonging
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.)
Not-in-force
Application number
EP08008148A
Other languages
German (de)
English (en)
Other versions
EP1995002A2 (fr
EP1995002A3 (fr
Inventor
Alfred Elser
Franz Sachsenmaier
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.)
August Moessner & Co Kg GmbH
Original Assignee
August Moessner & Co Kg 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
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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/pl
Publication of EP1995002A2 publication Critical patent/EP1995002A2/fr
Publication of EP1995002A3 publication Critical patent/EP1995002A3/fr
Application granted granted Critical
Publication of EP1995002B1 publication Critical patent/EP1995002B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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 removal of 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.
  • 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, and wherein the receiving device for the casting having Part of the vibrator rotatably mounted on the frame, whereby the fixed in the receiving device casting is to be rotated from a knocking position for detaching the core sand in a dispensing position.
  • a vibrating device for removing the core sand from hollow castings which has a frame with a receiving device for tamper-proof casting and a vibration motor for generating the Rüttelschwingungen, wherein a discharge of the core sand from the casting by gravity is provided, and wherein a Receiving device for the casting exhibiting part of the vibrator rotatably mounted on the frame, whereby the fixed in the receiving device casting is to be rotated from a knocking position for detachment of the core sand in a dispensing position.
  • a generic Hinttelvorraum for removing the core sand from hollow castings comprising a frame with a receiving device for tamper-proof casting and a vibration motor for generating the Studttelschwingungen, wherein a discharge of the core sand from the casting by gravity is provided, wherein the receiving device for the casting exhibiting part of the vibrator rotatably mounted on the frame, whereby the fixed in the receiving device casting is to be rotated by a knocking position for detachment of the core sand in a dispensing position, wherein the axis of rotation of the rotatable part of the vibrator device is approximately horizontal, and wherein the rotatable Part of the vibrator is designed as a drum, which is mounted on turntables on the drum ends on opposite sides of the frame.
  • 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.
  • the knocking position it is important that the core sand, which has broken loose by knocking, can not already be ejected predominantly from the casting by the knocking vibrations.
  • discharge position by contrast, a position of the casting is understood, in which the cavity opening of the casting down is turned so that the core sand can fall out completely under the influence of gravity from the cavity of the casting or trickle out.
  • the axis of rotation of the rotatable part of the vibrator device is approximately horizontal since 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.
  • 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.
  • one or more vibration motors of the drum via an intermediate frame elastically suspended from the frame frame.
  • this is preferably mounted on guide rollers which are arranged distributed over the circumference of the turntable and lead the associated turntable on the outer circumference.
  • guide rollers 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.
  • 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 cocking 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 no rotational position of the drum 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.

Landscapes

  • 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)

Claims (13)

  1. Appareil à secousses pour éliminer le sable à noyaux des pièces coulées creuses, qui comprend un bâti (11) comportant un dispositif de réception servant à immobiliser la pièce coulée (17) d'une façon qui résiste à la frappe et un moteur de vibration (21) servant à produire les oscillations de secouage, dans lequel l'éjection du sable à noyaux de la pièce coulée (17) est prévue par effet centrifuge, dans lequel une partie de l'appareil à secousses (10) qui comporte le dispositif de réception de la pièce coulée (17) est montée rotative sur le bâti (11), de manière que la pièce coulée (17) immobilisée dans le dispositif de réception soit basculée d'une position de frappe servant à détacher le sable à noyaux à une position de déversement, dans lequel l'axe de rotation de la partie rotative de l'appareil à secousses (10) s'étend à peu près horizontalement, et dans lequel la partie rotative de l'appareil à secousses (10) est constituée par un tambour (14) qui est monté rotatif sur le bâti (11) par l'intermédiaire de plateaux tournants (15, 15') prévus aux extrémités du tambour sur les côtés opposés
    caractérisé en ce que chaque moteur de libration (21) du tambour (14) est suspendu élastiquement par un châssis intermédiaire (22)
  2. Appareil selon la revendication 1,
    caractérisé en ce que la position de déversement est une position inverse de la position de frappe
  3. Appareil selon la revendication 1 ou 2,
    caractérisé en ce que les plateaux tournants (15, 15') sont montés rotatifs à leur périphérie extérieure, chacun au moyen de plusieurs rouleaux de guidage correspondants (24)
  4. Appareil selon l'une des revendications 1 à 3,
    caractérisé en ce qu'un plateau tournant (15') du tambour (14) est entraîné en rotation au moyen d'un entraînement à chaîne
  5. Appareil selon l'une des revendications 1 à 4, caractérisé en ce que la pièce coulée (17) peut être immobilisée dans un dispositif de réception qui est disposé sur un côté frontal accessible d'un des plateaux tournants (15)
  6. Appareil selon la revendication 5,
    caractérisé en ce que deux consoles porteuses (16) font saillie sur le côté frontal du plateau tournant (15) à distance l'une de l'autre, pour servir d'étais pour l'appui de la pièce coulée (17)
  7. Appareil selon la revendication 6,
    caractérisé en ce que, dans sa position d'appui, la pièce coulée (17) est maintenue appuyée sur les consoles porteuses (16) par un dispositif de serrage
  8. Appareil selon la revendication 7,
    caractérisé en ce que le dispositif de serrage comprend un levier de serrage (18) qui se déplace dans un plan s'étendant à peu près au milieu entre les consoles porteuses (16) et qui est entraîné par un élément de travail pneumatique à double effet.
  9. Appareil selon l'une des revendications 5 à 8,
    caractérisé en ce que au moins un marteau de frappe (20) entraîné par un moteur est monté solidairement en rotation sur le plateau tournant (15) du tambour (14), à un certain écartement pour recevoir la pièce coulée (17)
  10. Appareil selon l'une des revendications 1 à 9,
    caractérisé en ce que le bâti porteur (11) est une cage en forme de cadre parallélépipédique qui est formée par assemblage de profilés semi-produits coupés à longueur
  11. Appareil selon la revendication 10,
    caractérisé en ce que, comme profilés semi-produits, il est prévu des profilés creux
  12. Procédé pour éliminer le sable à noyaux des pièces coulées creuses au moyen d'un appareil à secousses selon l'une des revendications 1 à 11, caractérisé en ce que,
    dans une première phase de travail, la pièce coulée (17) est posée sur un dispositif de réception de l'appareil à secousses (10) et est fixée au moyen d'un dispositif de serrage,
    dans une deuxième phase de travail, la pièce coulée (17) est frappée au moyen d'un dispositif à marteau de l'appareil à secousses (10),
    dans une troisième phase de travail, la pièce coulée (17) est secouée en restant dans le dispositif de réception de l'appareil à secousses (10) et basculée dans la position de déversement, et
    dans une quatrième phase de travail, la pièce coulée est ramenée par rotation à sa position de frappe, le dispositif de serrage est desserré et la pièce coulée (17) dénoyautée est extraite de l'appareil à secousses (10)
  13. Procédé selon la revendication 12,
    caractérisé en ce que la pièce coulée (17) est secouée au cours de son mouvement de rotation
EP08008148A 2007-05-08 2008-04-29 Vibreur et procédé de retrait du sable à noyaux de pièces moulées creuses Not-in-force EP1995002B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08008148T PL1995002T3 (pl) 2007-05-08 2008-04-29 Urządzenie wibracyjne i sposób usuwania masy rdzeniowej z pustych odlewów

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007022043A DE102007022043A1 (de) 2007-05-08 2007-05-08 Rüttelvorrichtung und Verfahren zum Entfernen des Kernsandes aus hohlen Gussstücken

Publications (3)

Publication Number Publication Date
EP1995002A2 EP1995002A2 (fr) 2008-11-26
EP1995002A3 EP1995002A3 (fr) 2010-01-27
EP1995002B1 true EP1995002B1 (fr) 2012-04-04

Family

ID=39719100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08008148A Not-in-force EP1995002B1 (fr) 2007-05-08 2008-04-29 Vibreur et procédé de retrait du sable à noyaux de pièces moulées creuses

Country Status (5)

Country Link
EP (1) EP1995002B1 (fr)
AT (1) ATE552058T1 (fr)
DE (2) DE102007022043A1 (fr)
ES (1) ES2386012T3 (fr)
PL (1) PL1995002T3 (fr)

Cited By (1)

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DE102018221826B4 (de) 2017-12-14 2024-01-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Herstellen eines Kerns sowie nach dem Verfahren hergestellter Gießkern

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ES2683523T3 (es) 2014-06-09 2018-09-26 O.M.Ler 2000 S.R.L. Martillo de extracción de núcleo o martillo neumático para extraer el núcleo de piezas de fundición con conectores traseros
US20170106440A1 (en) 2014-06-09 2017-04-20 O.M.Ler 2000 S.R.L. De-coring vibrator or pneumatic hammer for de-coring of foundry castings with aluminium alloy jacket
HUE038385T2 (hu) 2014-06-09 2018-10-29 O M Ler 2000 S R L Mageltávolító vibrátor, vagy pneumatikus kalapács öntödei öntvények magjának eltávolítására integrált szenzorral
CN106001519B (zh) * 2016-07-08 2018-10-02 芜湖永达科技有限公司 一种缸体震芯机
CN107671268A (zh) * 2017-11-27 2018-02-09 河南博威热能科技有限公司 换热器铸造用旋转式振动除芯机
CN109365790A (zh) * 2018-11-19 2019-02-22 浙江万丰科技开发股份有限公司 一种振动翻转落砂设备
AT522125A1 (de) * 2019-02-11 2020-08-15 Fill Gmbh Entkernhammer zum Entkernen von Gusswerkstücken
WO2020234818A1 (fr) * 2019-05-22 2020-11-26 O.M.Ler S.R.L. Machine de débourrage pour pièces coulées de fonderie dotée d'un logement rotatif pour pièces coulées de fonderie et procédé associé permettant de débourrer des pièces coulées de fonderie
WO2020234820A1 (fr) * 2019-05-22 2020-11-26 O.M.Ler S.R.L. Machine de dénoyautage pour dénoyauter une pluralité de pièces coulées de fonderie et procédé de dénoyautage
CN110508793B (zh) * 2019-09-25 2021-11-30 江苏舒登机械装备有限公司 一种铸件除芯装置
CN110711854A (zh) * 2019-11-28 2020-01-21 安徽省含山县富坤铸造厂 一种管形铸件除砂装置
CN113145794B (zh) * 2021-04-29 2022-07-08 共享装备股份有限公司 一种用于大型缸体的可起型模样
CN113426989B (zh) * 2021-06-25 2023-03-03 江苏天宏机械工业有限公司 一种震动落砂机
CN113857465B (zh) * 2021-09-30 2023-02-03 北京星航机电装备有限公司 一种钛合金石墨的清理工装及清理方法

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DE2947795C2 (de) 1979-11-28 1982-01-28 Bayerische Motoren Werke AG, 8000 München Vorrichtung zum Ausschlagen von Kernen aus Gußstücken
IT1157143B (it) * 1982-12-14 1987-02-11 Fataluminium Spa Dispositivo di sterratura per getti metallici cavi
DE8711639U1 (fr) * 1987-08-27 1987-12-23 "F. U. K." Froelich & Kluepfel Drucklufttechnik Gmbh & Co Kg, 5600 Wuppertal, De
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018221826B4 (de) 2017-12-14 2024-01-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Herstellen eines Kerns sowie nach dem Verfahren hergestellter Gießkern

Also Published As

Publication number Publication date
DE102007022043A1 (de) 2008-11-13
ES2386012T3 (es) 2012-08-07
ATE552058T1 (de) 2012-04-15
DE202007018558U1 (de) 2008-11-13
EP1995002A2 (fr) 2008-11-26
EP1995002A3 (fr) 2010-01-27
PL1995002T3 (pl) 2012-09-28

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