EP0652063B1 - Knock-out device for casting cores - Google Patents
Knock-out device for casting cores Download PDFInfo
- Publication number
- EP0652063B1 EP0652063B1 EP94402482A EP94402482A EP0652063B1 EP 0652063 B1 EP0652063 B1 EP 0652063B1 EP 94402482 A EP94402482 A EP 94402482A EP 94402482 A EP94402482 A EP 94402482A EP 0652063 B1 EP0652063 B1 EP 0652063B1
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- EP
- European Patent Office
- Prior art keywords
- chassis
- gripping
- vertical
- median
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
Definitions
- the present invention relates to a device improved scouring of casting cores of parts foundry.
- the hollow parts of a casting are usually molded around shaped sand cores complementary to those of the hollow parts.
- I1 exists in the prior art different types of cleaning devices for vibrating a foundry piece in order to disintegrate the casting cores.
- the devices proposed either are complex and fragile, either do not give full satisfaction and leave fragments of nuclei stuck on the foundry parts.
- EP-A-0 144 031 describes a cleaning device of casting cores of foundry parts, of the type comprising a rigid frame hung on a fixed support, at least one device for clamping a workpiece carried by the chassis and two unbalance motors attached to it chassis and intended, in operation, to oscillate the frame.
- the invention aims to provide a device for simple and effective cleaning, allowing to obtain a complete elimination of the casting cores, even in the case a complex shaped casting such as a internal combustion engine cylinder head.
- the invention relates to a device cleaning of the aforementioned type, characterized in that the chassis has a vertical axis of symmetry forming an axis oscillation of the chassis, defined by the intersection longitudinal and transverse vertical median planes of the chassis, this chassis being hung on the support by elastically deformable connecting means, the device cleaning device comprising two clamping devices pieces to be cleaned carried by two opposite ends of the chassis while being aligned in the median longitudinal plane, the two motors being fixed on two opposite sides of the chassis and having axes of rotation parallel to the axis of chassis symmetry and aligned with this axis of symmetry in the median transverse plane, the motors can thus oscillate the chassis around its virtual axis of so that the center of gravity of each part at breaking out describes a substantially horizontal trajectory and ellipsoidal.
- FIGS. 1 to 3 show a device according to the invention, designated by the general reference 10, for cleaning the cores of foundry parts, such as cylinder heads for internal combustion engines.
- the device 10 is intended to disburse two castings at a time of which only one is shown in Figure 2 for clarity.
- the piece of foundry shown in this figure is a cylinder head P motor fitted with casting weights m.
- the cleaning device 10 is placed in an anti-noise box 11 provided with openings closable access, as shown in Figure 1.
- the device 10 comprises a rigid chassis 12, generally elongated, having an axis of symmetry vertical X forming a virtual axis of oscillation of the chassis, as will be described in more detail later, defined by the intersection of the median planes vertical longitudinal L and transverse T of the chassis, these plans being shown in phantom in Figure 2.
- the chassis 12 is hung on a fixed support 14 by means of four cylindrical joints 16, of the type known, of vertical axes, elastically deformable transversely, arranged symmetrically two by two with respect to the longitudinal vertical median planes L and transverse T.
- the chassis 12 is provided with a framework comprising three horizontal plates 18 superimposed, of shapes identical general, interconnected by two souls longitudinal vertical 20 welded to the plates horizontal 18, a single core 20 being shown on Figure 3.
- the width of the horizontal plates 18 is more weak in their middle part than in their parts ends, the latter parts comprising rectangular cutouts 22 open opposite the axis of X symmetry.
- the cleaning device 10 further comprises two devices 24 for clamping work pieces carried by two ends of the chassis 12 while being aligned in the median longitudinal plane L, and two motors 26 to unbalance, of known type, conventionally fixed on the two opposite sides of the chassis delimited by the parts narrow medians of the horizontal plates 18.
- the axes of rotation R of these motors 26 are parallel to the axis of symmetry X of the chassis 12 and aligned with this axis of symmetry in the median transverse plane T.
- Each clamping device 24 is arranged between two vertical end plates 28,30, symmetrical relative to the median longitudinal plane L, fixed on the opposite edges of the cutouts 22.
- a first plate end 28 forms a fixed clamping jaw and a second end plate 30 forms a support for at least one pneumatic cylinder with chamber 32, of known type, for example marketed under the name "PNEURIDE" by the PARKER company.
- the pneumatic cylinder 32 is provided with a fixed end hung on the support 30 and a movable end carrying a plate 34 parallel to the two end plates 28,30, forming a movable jaw of Tightening.
- the jaws 28, 34 therefore delimit faces vertical clamping opposite which is maintained a workpiece P.
- the fixed jaws 28, respectively the movable jaws 34, of the two devices clamping 24 are mounted in opposition to each other with respect to the median longitudinal plane L.
- each clamping device 24 has two pneumatic cylinders with chamber 32 carrying the movable jaw 34, aligned vertically.
- the number of pneumatic cylinders used in a clamping device depends on the weight of the workpiece to break out.
- Horizontal grids 36 are arranged between the lower end of the end plates 28.30 of clamping devices. These grids 36 form supports facilitating the installation and removal of parts to be cleaned and allow gravity flow fragments of casting cores which come loose from these parts.
- the fixed jaw 28 of a clamping device is perforated by orifices 38 delimiting passages for known means for hammering the foundry piece P.
- hammering means for example comprise a hammer tire 40, as shown in FIG. 2, intended to strike part of the part to be stripped arranged in line with the orifices 38, this part being constituted for example by the casting weights m integral with the foundry piece.
- a plate can be inserted between the weights m and the hammer 40, in particular when these weights are relatively fragile.
- the rotation of the motors 26 has the effect of making oscillate the chassis 12 around its virtual axis X, in elastically deforming the joints 16 substantially in a horizontal plane, so that the center of gravity of each workpiece P oscillates by describing a substantially horizontal and ellipsoidal trajectory, of long axis transverse to the chassis 12.
- the oscillations have the effect of disaggregating the casting cores completely without any fragments does not remain in the hollows of the foundry parts.
- the power of the unbalance motors 26 is adapted so that the amplitude of the oscillations of the parts to be cleaned, measured along the major axis of the ellipsoidal path is between 12 and 16 mm about.
- each unbalance motor has a power of around 5 kW
- each pneumatic cylinder is supplied with compressed air having a pressure of 2 at around 5 bars, so that castings of variable weights.
- the amplitude of the oscillations of the center of gravity parts to be cleaned, measured along the major axis of the ellipsoidal trajectory, is about 14 mm, that is to say 7 mm on either side of the rest position of the center of gravity, for a frequency of 1,500 oscillations / min, i.e. 1,500 vibrations / min around from the rest position of the center of gravity.
- the amplitude and frequency of oscillations of the parts to be cleaned can vary in depending on the adjustment of the unbalance motors. Otherwise, the power of these motors is chosen according to the weight of the parts to be cleaned.
- the invention has many advantages.
- the device according to the invention makes it possible to rack two foundry pieces at a time by submitting these to vibrations transmitted by the chassis which wear them, without using the means of transmission classic connecting rods and cranks that are complex and fragile. Therefore, the cleaning device according to the invention is very robust and reliable.
- the vibrations produced by the cleaning according to the invention have amplitudes and frequencies higher than those obtained in the devices conventional, allowing to completely disaggregate the casting cores without leaving any fragments inside the foundry parts.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Vehicle Body Suspensions (AREA)
- Casting Devices For Molds (AREA)
Description
La présente invention concerne un dispositif perfectionné de débourrage de noyaux de coulée de pièces de fonderie.The present invention relates to a device improved scouring of casting cores of parts foundry.
Elle s'applique en général au débourrage de noyaux de sable dans des pièces de fonderie creuses, et plus particulièrement dans des culasses ou dans des collecteurs pour moteurs à combustion interne.It generally applies to the settling of cores sand in hollow castings, and more particularly in cylinder heads or in manifolds for internal combustion engines.
Les parties creuses d'une pièce de fonderie sont habituellement moulées autour de noyaux de sable de formes complémentaires à celles des parties creuses.The hollow parts of a casting are usually molded around shaped sand cores complementary to those of the hollow parts.
L'élimination des noyaux de coulée, après moulage d'une pièce de fonderie, est d'autant plus difficile à réaliser que cette pièce de fonderie a une forme complexe.Elimination of the casting cores after molding of a foundry piece, is all the more difficult to realize that this foundry piece has a complex shape.
I1 est connu d'éliminer les noyaux de coulée dans une pièce de fonderie de forme complexe, telle qu'une culasse de moteur, en soumettant cette pièce à un martelage, afin de décrocher les noyaux de sable, puis à des vibrations, afin de désagréger les noyaux de sable et évacuer les fragments de noyaux par gravité.It is known to eliminate the casting cores in a complex shaped casting, such as a cylinder head by hammering this part in order to unhook the sand cores, then vibrate, in order to disintegrate the sand cores and remove the fragments of gravity nuclei.
I1 existe dans l'état de la technique différents types de dispositifs de débourrage permettant de faire vibrer une pièce de fonderie afin de désagréger les noyaux de coulée. Cependant, les dispositifs proposés soit sont complexes et fragiles, soit ne donnent pas entière satisfaction et laissent subsister des fragments de noyaux collés sur les pièces de fonderie.I1 exists in the prior art different types of cleaning devices for vibrating a foundry piece in order to disintegrate the casting cores. However, the devices proposed either are complex and fragile, either do not give full satisfaction and leave fragments of nuclei stuck on the foundry parts.
EP-A-0 144 031 décrit un dispositif de débourrage de noyaux de coulée de pièces de fonderie, du type comprenant un châssis rigide accroché sur un support fixe, au moins un dispositif de serrage d'une pièce à débourrer porté par le châssis et deux moteurs à balourd fixés sur ce châssis et destinés, en fonctionnement, à faire osciller le châssis.EP-A-0 144 031 describes a cleaning device of casting cores of foundry parts, of the type comprising a rigid frame hung on a fixed support, at least one device for clamping a workpiece carried by the chassis and two unbalance motors attached to it chassis and intended, in operation, to oscillate the frame.
L'invention a pour but de proposer un dispositif de débourrage simple et efficace, permettant d'obtenir une élimination complète des noyaux de coulée, même dans le cas d'une pièce de fonderie de forme complexe telle qu'une culasse de moteur à combustion interne.The invention aims to provide a device for simple and effective cleaning, allowing to obtain a complete elimination of the casting cores, even in the case a complex shaped casting such as a internal combustion engine cylinder head.
A cet effet l'invention a pour objet un dispositif de débourrage du type précité, caractérisé en ce que le châssis a un axe de symétrie vertical formant un axe virtuel d'oscillation du châssis, défini par l'intersection des plans médians verticaux longitudinal et transversal du châssis, ce châssis étant accroché sur le support par des moyens de liaison déformables élastiquement, le dispositif de débourrage comprenant deux dispositifs de serrage de pièces à débourrer portés par deux extrémités opposées du châssis en étant alignés dans le plan longitudinal médian, les deux moteurs étant fixés sur deux côtés opposés du châssis et ayant des axes de rotation parallèles à l'axe de symétrie du châssis et alignés avec cet axe de symétrie dans le plan transversal médian, les moteurs pouvant ainsi faire osciller le châssis autour de son axe virtuel de manière que le centre de gravité de chaque pièce à débourrer décrive une trajectoire sensiblement horizontale et ellipsoïdale.To this end the invention relates to a device cleaning of the aforementioned type, characterized in that the chassis has a vertical axis of symmetry forming an axis oscillation of the chassis, defined by the intersection longitudinal and transverse vertical median planes of the chassis, this chassis being hung on the support by elastically deformable connecting means, the device cleaning device comprising two clamping devices pieces to be cleaned carried by two opposite ends of the chassis while being aligned in the median longitudinal plane, the two motors being fixed on two opposite sides of the chassis and having axes of rotation parallel to the axis of chassis symmetry and aligned with this axis of symmetry in the median transverse plane, the motors can thus oscillate the chassis around its virtual axis of so that the center of gravity of each part at breaking out describes a substantially horizontal trajectory and ellipsoidal.
Suivant d'autres caractéristiques de l 'invention:
- les moyens reliant le châssis au support comprennent quatre articulations cylindriques d'axes verticaux, déformables élastiquement transversalement, disposées symétriquement deux à deux par rapport aux plans médians verticaux longitudinal et transversal ;
- chaque dispositif de serrage comprend une mâchoire fixe et une mâchoire mobile délimitant des faces verticales de serrage en vis-à-vis entre lesquelles peut être maintenue une pièce à débourrer ;
- la mâchoire mobile est portée par au moins un vérin pneumatique à chambre ;
- les mâchoires fixes, respectivement les mâchoires mobiles, des deux dispositifs de serrage sont montées en opposition l'une de l'autre par rapport au plan vertical longitudinal médian ;
- la partie médiane du châssis sur laquelle sont fixés les moteurs est plus étroite que les parties d'extrémité du châssis portant les dispositifs de serrage;
- le châssis est muni d'une ossature comportant des plaques horizontales reliées entre elles par des âmes longitudinales verticales ;
- chaque dispositif de serrage comprend deux plaques verticales d'extrémité symétriques par rapport au plan longitudinal médian, fixées sur les bords opposés de découpes rectangulaires ménagées dans les extrémités correspondantes des plaques horizontales de l'ossature, une première plaque d'extrémité formant la mâchoire fixe du dispositif de serrage, la seconde plaque d'extrémité formant un support pour une extrémité fixe du vérin pneumatique, le dispositif de serrage comportant en outre une troisième plaque parallèle à la mâchoire fixe, portée par l'extrémité mobile du vérin pneumatique, formant la mâchoire mobile du dispositif de serrage ;
- les mâchoires fixes des dispositifs de serrage comprennent des orifices de passage pour des moyens de martelage des pièces maintenues dans les dispositifs de serrage.
- the means connecting the chassis to the support comprise four cylindrical articulations of vertical axes, elastically deformable transversely, arranged symmetrically two by two with respect to the longitudinal and transverse vertical median planes;
- each clamping device comprises a fixed jaw and a movable jaw delimiting vertical clamping faces vis-à-vis between which a workpiece can be held;
- the movable jaw is carried by at least one pneumatic cylinder with chamber;
- the fixed jaws, respectively the movable jaws, of the two clamping devices are mounted in opposition to each other with respect to the median longitudinal vertical plane;
- the middle part of the chassis on which the motors are fixed is narrower than the end parts of the chassis carrying the clamping devices;
- the chassis is provided with a framework comprising horizontal plates connected together by vertical longitudinal webs;
- each clamping device comprises two vertical end plates symmetrical with respect to the median longitudinal plane, fixed on the opposite edges of rectangular cutouts formed in the corresponding ends of the horizontal plates of the frame, a first end plate forming the fixed jaw of the clamping device, the second end plate forming a support for a fixed end of the pneumatic jack, the clamping device further comprising a third plate parallel to the fixed jaw, carried by the movable end of the pneumatic jack, forming the movable jaw of the clamping device;
- the fixed jaws of the clamping devices comprise passage orifices for means of hammering the parts held in the clamping devices.
Un exemple de réalisation de l'invention sera décrit ci-dessous en se référant aux dessins annexés dans lesquels :
- la figure 1 est une vue en perspective d'un dispositif de débourrage selon l'invention ;
- la figure 2 est une vue de dessus du dispositif de débourrage de la figure 1 ;
- la figure 3 est une demie vue en coupe selon la ligne 3-3 de la figure 2, à échelle agrandie.
- Figure 1 is a perspective view of a cleaning device according to the invention;
- Figure 2 is a top view of the cleaning device of Figure 1;
- Figure 3 is a half sectional view along line 3-3 of Figure 2, on an enlarged scale.
On a représenté aux figures 1 à 3 un dispositif
selon l'invention, désigné par la référence générale 10,
pour le débourrage de noyaux de pièces de fonderie,
telles que des culasses pour moteurs à combustion interne.FIGS. 1 to 3 show a device
according to the invention, designated by the
Le dispositif 10 est destiné à débourrer deux
pièces de fonderie à la fois dont une seule est représentée
à la figure 2 pour des raisons de clarté. La pièce de
fonderie représentée sur cette figure est une culasse de
moteur P munie de masselottes de coulée m.The
De préférence, le dispositif de débourrage 10 est
placé dans un caisson 11 anti-bruit muni d'ouvertures
d'accès obturables, tel que représenté sur la figure 1.Preferably, the
Le dispositif 10 comporte un châssis rigide 12,
de forme générale allongée, ayant un axe de symétrie
vertical X formant un axe virtuel d'oscillation du
châssis, comme cela sera décrit plus en détail ultérieurement,
défini par l'intersection des plans médians
verticaux longitudinal L et transversal T du châssis, ces
plans étant représentés en trait mixte sur la figure 2.The
Le châssis 12 est accroché sur un support fixe 14
au moyen de quatre articulations cylindriques 16, de type
connu, d'axes verticaux, déformables élastiquement
transversalement, disposées symétriquement deux à deux
par rapport aux plans médians verticaux longitudinal L et
transversal T.The
Le châssis 12 est muni d'une ossature comportant
trois plaques horizontales 18 superposées, de formes
générales identiques, reliées entre elles par deux âmes
verticales longitudinales 20 soudées sur les plaques
horizontales 18, une seule âme 20 étant représentée sur
la figure 3.The
La largeur des plaques horizontales 18 est plus
faible dans leur partie médiane que dans leurs parties
d'extrémités, ces dernières parties comportant des
découpes rectangulaires 22 ouvertes à l'opposée de l'axe
de symétrie X. The width of the
Le dispositif de débourrage 10 comprend en outre
deux dispositifs 24 de serrage de pièces à débourrer
portés par deux extrémités du châssis 12 en étant alignés
dans le plan longitudinal médian L, et deux moteurs 26 à
balourd, de type connu, fixés de façon classique sur les
deux côtés opposés du châssis délimités par les parties
médianes étroites des plaques horizontales 18. Les axes
de rotation R de ces moteurs 26 sont parallèles à l'axe
de symétrie X du châssis 12 et alignés avec cet axe de
symétrie dans le plan transversal médian T.The
Chaque dispositif de serrage 24 est agencé entre
deux plaques verticales d'extrémité 28,30, symétriques
par rapport au plan longitudinal médian L, fixées sur les
bords opposés des découpes 22. Une première plaque
d'extrémité 28 forme une mâchoire fixe de serrage et une
seconde plaque d'extrémité 30 forme un support pour au
moins un vérin pneumatique à chambre 32, de type connu,
par exemple commercialisé sous le nom "PNEURIDE" par la
société PARKER. Le vérin pneumatique 32 est muni d'une
extrémité fixe accrochée sur le support 30 et d'une
extrémité mobile portant une plaque 34 parallèle aux deux
plaques d'extrémité 28,30, formant une mâchoire mobile de
serrage.Each
Les mâchoires 28,34 délimitent donc des faces
verticales de serrage en vis-à-vis entre lesquelles est
maintenue une pièce à débourrer P.The
De manière à équilibrer le châssis 12 autour de
son axe de symétrie, les mâchoires fixes 28, respectivement
les mâchoires mobiles 34, des deux dispositifs de
serrage 24 sont montées en opposition l'une de l'autre
par rapport au plan longitudinal médian L.In order to balance the
Dans l'exemple représenté sur les figures, chaque
dispositif de serrage 24 comporte deux vérins pneumatiques
à chambre 32 portant la mâchoire mobile 34, alignés
verticalement. Le nombre de vérins pneumatiques utilisés
dans un dispositif de serrage dépend du poids de la pièce
à débourrer.In the example shown in the figures, each
Des grilles horizontales 36 sont disposées entre
l'extrémité inférieure des plaques d'extrémité 28,30 des
dispositifs de serrage. Ces grilles 36 forment des
supports facilitant la mise en place et le retrait des
pièces à débourrer et permettent l'écoulement par gravité
des fragments de noyaux de coulée qui se décrochent de
ces pièces.
En se référant à la figure 1, on voit que la
mâchoire fixe 28 d'un dispositif de serrage est ajourée
par des orifices 38 délimitant des passages pour des
moyens connus de martelage de la pièce de fonderie P. Ces
moyens de martelage comprennent par exemple un marteau
pneumatique 40, tel que représenté sur la figure 2,
destiné à frapper une partie de la pièce à débourrer
disposée au droit des orifices 38, cette partie étant
constituée par exemple par les masselottes de coulée m
solidaires de la pièce de fonderie.Referring to Figure 1, we see that the
fixed
En variante, une plaque peut être intercalée
entre les masselottes m et le marteau 40, notamment
lorsque ces masselottes sont relativement fragiles.Alternatively, a plate can be inserted
between the weights m and the
Le fonctionnement du dispositif de débourrage représenté sur les figures est très simple.The operation of the cleaning device shown in the figures is very simple.
Tout d'abord, on serre chacune des pièces à
débourrer P entre les mâchoires 28,34 des dispositifs de
serrage 24 correspondants en alimentant en air comprimé
les vérins pneumatiques 32.First, we tighten each of the pieces to
poke P between the
Puis, les moteurs à balourd 26 étant arrêtés, on
martèle chaque pièce P au moyen du marteau pneumatique
40,selon un procédé connu.Then, the
Après l'opération de martelage, on met en marche
les moteurs à balourd 26 de manière qu'ils tournent dans
des sens identiques indiqués par des flèches sur la
figure 2. After the hammering operation, we start
the
La rotation des moteurs 26 a pour effet de faire
osciller le châssis 12 autour de son axe virtuel X, en
déformant élastiquement les articulations 16 sensiblement
dans un plan horizontal, de manière que le centre de
gravité de chaque pièce à débourrer P oscille en décrivant
une trajectoire sensiblement horizontale et ellipsoïdale,
de grand axe transversal par rapport au châssis
12.The rotation of the
Les oscillations ont pour effet de désagréger complètement les noyaux de coulée sans qu'aucun fragment ne subsiste dans les creux des pièces de fonderie.The oscillations have the effect of disaggregating the casting cores completely without any fragments does not remain in the hollows of the foundry parts.
De préférence, la puissance des moteurs à balourd
26 est adaptée pour que l'amplitude des oscillations des
pièces à débourrer, mesurée suivant le grand axe de la
trajectoire ellipsoïdale soit comprise entre 12 et 16 mm
environ.Preferably, the power of the
Dans l'exemple décrit, chaque moteur à balourd a une puissance de 5 kW environ, et chaque vérin pneumatique est alimenté en air comprimé ayant une pression de 2 à 5 bars environ, de manière à pouvoir débourrer des pièces de fonderie de poids variables.In the example described, each unbalance motor has a power of around 5 kW, and each pneumatic cylinder is supplied with compressed air having a pressure of 2 at around 5 bars, so that castings of variable weights.
L'amplitude des oscillations du centre de gravité des pièces à débourrer, mesurée suivant le grand axe de la trajectoire ellipsoïdale, est d'environ 14 mm, c'est-à-dire 7 mm de part et d'autre de la position de repos du centre de gravité, ceci pour une fréquence de 1.500 oscillations/mn, c'est-à-dire 1.500 alternances/mn autour de la position de repos du centre de gravité.The amplitude of the oscillations of the center of gravity parts to be cleaned, measured along the major axis of the ellipsoidal trajectory, is about 14 mm, that is to say 7 mm on either side of the rest position of the center of gravity, for a frequency of 1,500 oscillations / min, i.e. 1,500 vibrations / min around from the rest position of the center of gravity.
Bien entendu, l'amplitude et la fréquence des oscillations des pièces à débourrer peuvent varier en fonction du réglage des moteurs à balourd. Par ailleurs, la puissance de ces moteurs est choisie en fonction du poids des pièces à débourrer.Of course, the amplitude and frequency of oscillations of the parts to be cleaned can vary in depending on the adjustment of the unbalance motors. Otherwise, the power of these motors is chosen according to the weight of the parts to be cleaned.
L'invention comporte de nombreux avantages. The invention has many advantages.
Le dispositif selon l'invention permet de débourrer deux pièces de fonderie à la fois en soumettant celles-ci à des vibrations transmises par le châssis qui les porte, sans utiliser les moyens de transmission classiques à bielles et manivelles qui sont complexes et fragiles. De ce fait, le dispositif de débourrage selon l'invention est très robuste et fiable.The device according to the invention makes it possible to rack two foundry pieces at a time by submitting these to vibrations transmitted by the chassis which wear them, without using the means of transmission classic connecting rods and cranks that are complex and fragile. Therefore, the cleaning device according to the invention is very robust and reliable.
Les vibrations produites par le dispositif de débourrage selon l'invention ont des amplitudes et des fréquences supérieures à celles obtenues dans les dispositifs classiques, permettant de désagréger complètement les noyaux de coulée sans laisser subsister aucun fragment à l'intérieur des pièces de fonderie.The vibrations produced by the cleaning according to the invention have amplitudes and frequencies higher than those obtained in the devices conventional, allowing to completely disaggregate the casting cores without leaving any fragments inside the foundry parts.
Claims (9)
- Device for decoring smelting cores of foundry elements of the type including a rigid chassis (12) hooked onto a fixed support (14), at least one device (24) for gripping an element to be decored borne by the chassis (12), and two imbalanced motors secured to said chassis (12) and intended during operation to make the chassis (12) oscillate, characterised in that the chassis (12) has a vertical axis of symmetry (X) forming a virtual oscillation axis of the chassis defined by the intersection of longitudinal (L) and transversal (T) vertical median planes of the chassis, this chassis (12) being hooked onto the support (14) by elastically deformable linking means (16), the decoring device including two devices for gripping elements to be decored borne by two opposing extremities of the chassis (12) by being aligned inside the median longitudinal plane (L), the two motors (26) being secured to two opposite sides of the chassis (12) and having spin axes R ○ parallel to the axis of symmetry (X) of the chassis (12) and aligned with said axis of symmetry inside the median transversal plane (T), the motors (26) thus being able to make the chassis (12) oscillate around its virtual axis (X) so that the centre of gravity of each element to be decored describes an approximately ellipsoidal and horizontal trajectory
- Device according to claim 1, characterised in that the means connecting the chassis (12) to the support (14) include four cylindrical joints (16) with vertical axes able to deform elastically transversally and disposed symmetrically two by two with respect to the longitudinal (L) and transversal (T) vertical median planes.
- Device according to claim 1 or 2, characterised in that each gripping device (24) includes a fixed jaw (28) and a mobile jaw (34) delimiting opposing vertical gripping faces between which an element to be decored can be maintained.
- Device according to claim 3, characterised in that the mobile jaw (34) is borne by at least one chamber thrustor (32).
- Device according to claim 3 or 4, characterised in that the fixed jaws (28) and the mobile jaws (34) respectively of the two gripping devices (24) are mounted opposite each other with respect to the median longitudinal vertical plane (L).
- Device according to one of claims 1 to 5, characterised in that the median portion of the chassis (12) to which the motors (26) are secured is narrower than the extremity portions of the chassis (12) bearing the gripping devices (24).
- Device according to one of claims 1 to 5, characterised in that the chassis (12) is fitted with a frame comprising horizontal plates (18) interconnected by vertical longitudinal cores (20).
- Device according to claims 3 and 7 taken together, characterised in that each gripping device (24) includes two vertical extremity plates (28, 30) symmetrical with respect to the median longitudinal plane (L) and secured to the opposing edges with rectangular cuts (22) made in the corresponding extremities of the horizontal plates of the frame, a first extremity plate (28) forming the fixed jaw of the gripping device, the second extremity plate (30) forming a support for a fixed extremity of the thrustor (32), the gripping device (24) further comprising a third plate (34) parallel to the fixed jaw (28) borne by the mobile extremity of the thrustor (32) forming the mobile jaw of the gripping device (24).
- Device according to one of claims 3 to 8, characterised in that the fixed jaws (28) of the gripping devices (24) include passage openings (38) for means (40) for hammer-forging the elements kept in the gripping devices.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9313208A FR2711931B1 (en) | 1993-11-05 | 1993-11-05 | Improved device for cleaning the cores of casting of foundry parts. |
| FR9313208 | 1993-11-05 | ||
| US08/583,719 US5758713A (en) | 1993-11-05 | 1996-01-05 | Device for decoring cores of castings |
| CA002166836A CA2166836A1 (en) | 1993-11-05 | 1996-01-09 | Device for decoring cores of castings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0652063A1 EP0652063A1 (en) | 1995-05-10 |
| EP0652063B1 true EP0652063B1 (en) | 1999-10-20 |
Family
ID=27170111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94402482A Expired - Lifetime EP0652063B1 (en) | 1993-11-05 | 1994-11-03 | Knock-out device for casting cores |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5758713A (en) |
| EP (1) | EP0652063B1 (en) |
| CA (1) | CA2166836A1 (en) |
| DE (1) | DE69421240T2 (en) |
| ES (1) | ES2141809T3 (en) |
| FR (1) | FR2711931B1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6644382B1 (en) * | 1997-12-13 | 2003-11-11 | Yoshitaka Aoyama | Casting sand shake-out method and its apparatus |
| JP3236998B2 (en) * | 1999-04-17 | 2001-12-10 | 好高 青山 | Casting sand remover |
| ITTO20011180A1 (en) * | 2001-12-18 | 2003-06-18 | Global Foundry Systems Srl | DEVICE TO REMOVE SOULS FROM CASTING JETS. |
| AT411971B (en) * | 2002-07-26 | 2004-08-26 | Wolfgang Ing Schneebauer | Equipment for removing sand cores from castings includes counter-rotating horizontal eccentric shafts vibrating mounting for castings through push rods |
| FR2850305B1 (en) * | 2003-01-23 | 2005-03-18 | Marcel Massin | AUTOMATED DELIVERY SYSTEM AND UNLOADING DEVICE |
| US7695471B2 (en) * | 2003-04-18 | 2010-04-13 | The University Of Hong Kong | Fixation device |
| CN100346906C (en) * | 2005-03-24 | 2007-11-07 | 北京铝镁泰和铸机设备科技有限公司 | Segmented cam demoulding device and its application method |
| FR2901161B1 (en) * | 2006-05-17 | 2009-03-06 | Disa Serf | DEVICE FOR DISENGAGING PARTS OF FOUNDRIES COMPRISING A RECEPTION AREA FOR PARTS DEFINED IN THE FORM OF A CLOSED SPACE. |
| FR2907039B1 (en) * | 2006-10-16 | 2008-12-26 | Disa Serf | DEVICE FOR DISPENSING FOUNDRY PARTS INCLUDING A BEAM. |
| CN103271761B (en) | 2008-01-14 | 2015-10-28 | 康文图斯整形外科公司 | For the apparatus and method of fracture repair |
| WO2011088172A1 (en) | 2010-01-15 | 2011-07-21 | Brenzel Michael P | Rotary-rigid orthopaedic rod |
| JP5926688B2 (en) | 2010-01-20 | 2016-05-25 | コンベンタス オーソピディックス， インコーポレイテッド | Apparatus and method for access to bone and cavity equipment |
| WO2011112615A1 (en) | 2010-03-08 | 2011-09-15 | Krinke Todd A | Apparatus and methods for securing a bone implant |
| SI24307A (en) | 2013-03-29 | 2014-09-30 | Rc Simit D.O.O. | Boring of sand cores from castings |
| CN105939677A (en) | 2013-12-12 | 2016-09-14 | 康文图斯整形外科公司 | Tissue displacement tools and methods |
| AT517133B1 (en) * | 2015-04-17 | 2017-09-15 | Fill Gmbh | Entkernmaschine / vibrating machine with improved drive |
| US10631881B2 (en) | 2017-03-09 | 2020-04-28 | Flower Orthopedics Corporation | Plating depth gauge and countersink instrument |
| US10918426B2 (en) | 2017-07-04 | 2021-02-16 | Conventus Orthopaedics, Inc. | Apparatus and methods for treatment of a bone |
| CN112439891A (en) * | 2020-11-28 | 2021-03-05 | 德清鸿捷铸机有限公司 | Multidimensional vibration shakeout machine for casting |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3239262A1 (en) * | 1982-10-23 | 1984-04-26 | Alb. Klein Gmbh & Co Kg, 5241 Niederfischbach | Method and device for decoring castings |
| DE3341894C1 (en) * | 1983-11-19 | 1985-03-14 | Bayerische Motoren Werke AG, 8000 München | Device for coring castings by vibrations |
| CH665975A5 (en) * | 1985-04-09 | 1988-06-30 | Fischer Ag Georg | DEVICE FOR COREING CASTING PARTS. |
| US4643243A (en) * | 1985-08-05 | 1987-02-17 | Seaton-Ssk Engineering Co., Inc. | Machine for impact cleaning casting |
| JPH07112621B2 (en) * | 1990-11-07 | 1995-12-06 | ドーラー・ジヤービス・リミテツド・パートナーシツプ | Device that collapses and removes sand cores in castings by vibration |
| EP0524302B1 (en) * | 1991-02-07 | 1999-10-20 | Massin S.A. | Method and devices for decoring castings |
-
1993
- 1993-11-05 FR FR9313208A patent/FR2711931B1/en not_active Expired - Fee Related
-
1994
- 1994-11-03 DE DE69421240T patent/DE69421240T2/en not_active Expired - Fee Related
- 1994-11-03 ES ES94402482T patent/ES2141809T3/en not_active Expired - Lifetime
- 1994-11-03 EP EP94402482A patent/EP0652063B1/en not_active Expired - Lifetime
-
1996
- 1996-01-05 US US08/583,719 patent/US5758713A/en not_active Expired - Fee Related
- 1996-01-09 CA CA002166836A patent/CA2166836A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US5758713A (en) | 1998-06-02 |
| DE69421240T2 (en) | 2000-07-13 |
| FR2711931A1 (en) | 1995-05-12 |
| CA2166836A1 (en) | 1997-07-10 |
| DE69421240D1 (en) | 1999-11-25 |
| FR2711931B1 (en) | 1996-02-09 |
| EP0652063A1 (en) | 1995-05-10 |
| ES2141809T3 (en) | 2000-04-01 |
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