EP0444431B1 - Procédé et dispositif pour fabriquer des noyaux de fonderie - Google Patents

Procédé et dispositif pour fabriquer des noyaux de fonderie Download PDF

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Publication number
EP0444431B1
EP0444431B1 EP91101420A EP91101420A EP0444431B1 EP 0444431 B1 EP0444431 B1 EP 0444431B1 EP 91101420 A EP91101420 A EP 91101420A EP 91101420 A EP91101420 A EP 91101420A EP 0444431 B1 EP0444431 B1 EP 0444431B1
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EP
European Patent Office
Prior art keywords
shooting
dies
station
mould
basic
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
Application number
EP91101420A
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German (de)
English (en)
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EP0444431A3 (en
EP0444431A2 (fr
Inventor
Reiner Rommel
Werner Landua
Wolfgang Schimpf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Adolf Hottinger Maschinenbau GmbH
Original Assignee
Adolf Hottinger Maschinenbau GmbH
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Publication date
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Publication of EP0444431A2 publication Critical patent/EP0444431A2/fr
Publication of EP0444431A3 publication Critical patent/EP0444431A3/de
Application granted granted Critical
Publication of EP0444431B1 publication Critical patent/EP0444431B1/fr
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • B22C11/02—Machines in which the moulds are moved during a cycle of successive operations
    • B22C11/04—Machines in which the moulds are moved during a cycle of successive operations by a horizontal rotary table or carrier

Definitions

  • the invention relates to a device according to the preamble of claim 1 and a method according to the preamble of claim 13.
  • a second turntable is provided, the axis of which is arranged next to and outside the circumference of the first turntable and carries the shooting hoods. This conveys the firing hoods into appropriate stations via the respective molding box located there.
  • the disadvantage is that especially when the number of tools and thus also the shooting hoods is to be increased, the known machine becomes very bulky.
  • WO 87/07543 a method and a device for producing cores for foundry purposes are described in WO 87/07543, to which express reference is made, in particular also with regard to the actual production of molds and core parts.
  • the known device has conventional core molding machines, the number of which corresponds to that of the mold parts or core parts to be produced which are desired for a mold or a core.
  • a moving device is also provided, with which the molded parts produced are moved in one of their part boxes to a joining station, in which they are assembled into the desired overall shape. The respective partial boxes then move back into their molding machine so that a corresponding molded part can then be produced there.
  • the invention has for its object to provide a device and a method for producing cores, which, while avoiding the disadvantages mentioned above, enables the molded part to be improved in a space-saving manner with little expenditure on equipment or design.
  • the stated object is achieved in a device or a method of the type mentioned at the outset by the characterizing features of claims 1 and 13, respectively.
  • a (total) mold will consist of two molded parts, a basic or basic molded part and a final molded part, a core consisting of several core parts being arranged within or between them. The number of core parts and - as a rule - two molded parts then determines the total number of molded and core parts for the (overall) mold to be assembled.
  • conveyors with ten tools are optimal.
  • conveyors with fewer, for example five, or more tools, for example twelve, can also be provided.
  • a further firing station can be provided, for example, on a device which is provided per se for the production of molds from a multiplicity of molded parts and can accordingly convey many tools can also be used if the device is to be used to produce molds which require significantly fewer individual molded parts, in particular equal to or less than half of the total tools provided on the conveyor. In this way, several forms can be produced simultaneously with a device according to the invention.
  • An essential advantage of the invention is that the expensive and complex firing and gassing station only has to be present in accordance with the number of overall forms to be produced, but not in accordance with the number of individual partial forms.
  • the shooting and gassing station is practically permanently in use and has no long downtimes.
  • the main movement of the tools can be carried out by means of a tool carrier in the form of a carousel in the form of a circular movement, which is kinematically more favorable than the entire back and forth movement of a parts mold box for all molded parts.
  • the conveyors for the tools and the firing hoods are rotary machines, in particular in the form of carousels that support the periphery of the tools and the firing hoods.
  • the revolving axes of the conveyors are arranged offset in the area limited by their circumference, but relatively perpendicular to each other.
  • the shot station has a shot boiler and gassing carriage which can be moved linearly above the tool located in the shot station and has a shot kettle and a gassing hood, the shot kettle having devices for receiving and transmission of the firing hood is provided via the tool, further improvements being achieved in that the firing station is arranged radially to both axes of rotation or in that there are several mixing bunkers which can be brought centrally above into the positioning point into which these firing hoods are carried by the firing hood carrier to shoot the core molding material (sand) into the tools.
  • a transfer device for receiving pusher plates and removing them from the tools is provided in a station in front of the forming station, further developments provide that the transfer device has a swivel arm and that the gassing hood has a device for receiving and expelling the pusher plates .
  • An extremely preferred embodiment provides that the shooting station is followed by a device (transfer station) for removing a basic mold box with a molded part located therein from the tool holder for the tools and for moving back into the area of open follow-on tools.
  • This embodiment is further characterized by devices for holding shaped molded parts in upper boxes of tools and for assembling a molded part held in this way with molded parts held in a base box of another tool, possibly already assembled (package of molded parts).
  • the device and the corresponding process sequence according to the invention have the further advantage that, apart from the basic mold lower box, no further mold box parts, in particular no mold box part of the other tools from the cyclic or endless conveyor for the tools - which, as mentioned, is preferably designed as a circular carousel is - must be removed.
  • the joining does not take place in a separate, remote joining station, as is the case in the prior art, but directly in the held tools themselves.
  • their individual boxes are only brought at a vertical distance from one another.
  • the opening and closing movements of the tools, which are required anyway, and the devices required for this, such as preferably hydraulic cylinders, are used to carry out the joining process itself.
  • the invention offers the advantageous possibility that a further conveyor, preferably in the form of a carousel, with its own firing and gassing station is assigned to the transfer station designed in this way at its end facing away from the first conveyor, so that parts to be joined alternately in the individual firing stations are formed and the individual molded parts are alternately brought from one conveyor or from the other conveyor to the transfer station and are joined there by moving the already assembled individual molded parts into the respective conveyor area.
  • a further conveyor preferably in the form of a carousel, with its own firing and gassing station is assigned to the transfer station designed in this way at its end facing away from the first conveyor, so that parts to be joined alternately in the individual firing stations are formed and the individual molded parts are alternately brought from one conveyor or from the other conveyor to the transfer station and are joined there by moving the already assembled individual molded parts into the respective conveyor area.
  • At least one of the endless conveyors has a further transfer station, so that when molds with a small number of molded parts are produced, the two devices also work independently of one another can.
  • This configuration offers the possibility of automatically producing molded parts with a high number of individual molded parts by working the two conveyors together, while, if desired, two molds, possibly of different types with a lower number of molded parts, can be produced in parallel independently on the machines.
  • the number of pieces will determine whether a rotary machine with a large number of tools and one or two molding stations or two rotary machines can be used with fewer tools and a common transfer station.
  • the invention also offers the possibility that if the molds are to be created from a number of molded parts which is greater than the number of molds of the device, individual molded parts may preferably be produced separately on separate molding machines and used separately in the transfer station.
  • the device according to the invention for the production of molds for foundry purposes first has a tool holder 1 in the form of a circular conveyor for the tools 2 on a machine stand 1a (FIG. 2), which is arranged on the circumference of the tool holder 1 are.
  • the tool carrier 1 is rotatable about an axis of rotation 3.
  • the molded parts 5, 5a (FIGS. 4,5), in particular also core parts, are produced in the closed tools 2 in a manner to be described.
  • a shot cap carrier 4 for the shooting hood 6 Arranged above the tool carrier 1 is a shot cap carrier 4 for the shooting hood 6, which is also designed as a circular conveyor and rotates about an axis of rotation 7.
  • Tool carrier 1 and firing hood carrier 4 can preferably be designed as support arms, each driven by a precision and indexing table, on a slewing ring table for the tools 2 and firing hoods 6, respectively.
  • firing station 8 - the tools 2 carried by the tool carrier 1 and the firing hoods 6 correspondingly associated with each tool 2 are offset in the horizontal direction, that is to say perpendicular to their axes of rotation 3, 7, as can be seen from Figures 1 and 2.
  • an optimally compact device is achieved in that the two axes 3, 7 are offset from one another in an extension of the firing station 8 and the firing hood support 4 has a circumference which allows the desired number of firing hoods 6 to be accommodated. If one were to choose matching axes based on the latter, then the desired offset in the shooting station 8 would result in a larger dimensioning of the entire device.
  • the shooting hoods 6 In the area diagonally opposite the shooting station 8 via the pivot points 3, 7 (at 9), the shooting hoods 6 essentially move above the respective tool 2.
  • the tools 2 consist, in a manner known per se, of a lower box 11, an upper box 12 and ejector plates 13 adapted to them.
  • each tool is assigned its own adapted shooting hood 6, which has weft channels (not shown) extending from a central shot opening 14, which lead to the shot holes formed in the upper tool 12 for ejector rods 16 of the ejector plates 13 and thus allow the molding sand to be shot in through them.
  • the firing station 8 has one or more mixing bunkers 21 (two in the exemplary embodiment shown), which can be moved from a standby position 22 into an operating position 23, which is located centrally above the position into which a firing hood 6 through the firing hood carrier 4 in the part Forming station is guided.
  • a shot boiler and gassing carriage 26 is arranged to be movable in the horizontal direction between the mixing bunker 21 arranged there and the shooting hood 6 supported there by the shooting hood support 4.
  • the carriage 26 carries, on the one hand, a shot boiler 27 and, on the other hand, at a distance corresponding to the horizontal distance from the shooting hoods and tools in the parts-forming station, a fumigation hood 28 which is provided with an ejection device 28a, by means of which it is gassed via an ejector plate 13 with ejector rods 16 can eject a shaped basic molded part from the upper box so that it remains in the lower box.
  • the ejector rods 16 on the ejector plate 13 push through the shot holes in the upper tool 12.
  • the shot boiler and gassing carriage 26 moves radially to both axes of rotation 3, 7 (ie in alignment with the same).
  • a storage plate 31 for the upper ejector plates 13 is arranged radially outside the tools 2 at a distance which corresponds to the horizontal distance already mentioned between the shooting hoods and tools or the firing kettle 27 and the gassing hood 28 on the carriage 26.
  • a transfer device 32 for the ejector plates 13 in front of the shooting station 8 such that the device 32 with a swivel arm 33 in a tool position in front of the shooting station 8 receive the ejector plate 13 belonging to the tool 6 located there and transfer it to the storage space 31 and can drop there.
  • the ejector plate 13 is pivoted relative to the transfer movement of the arm 33 relative to the latter in such a way that its outer side always, i.e.
  • the transfer station 41 has a transfer carriage 42 for receiving one of two basic mold lower boxes 11a (transfer boxes) of a basic tool.
  • 11 lifting devices 43 and for the upper tool boxes ejectors 44 are also provided for the lower tool boxes, which are acted upon hydraulically, as are also the other horizontal and vertical linear movements mentioned hydraulically by the hydraulic cylinder indicated in the drawing.
  • a removal station 51 is assigned to a further standstill position of the tools 2. This also has a radially movable carriage, namely a removal carriage 52 for the basic form lower box 11a and in the retracted position of the removal carriage 52 an ejector 53 for ejecting the mold or cores located therein.
  • a lifting device 54 is also provided in the path of the tools 2 required by the tool carrier 1 below the lower box.
  • the assembled molds or cores in the removal station can either be removed by hand, if necessary using aids, or it is a known removal device for the composite shapes and cores provided.
  • the two carriers 1, 4 rotate synchronously. If the tool 2 with the basic shape lower box 11a now arrives in the station 34, the arm 33 grips the associated individual upper ejector plate 13 conveyed with the tool 2 in this station and transfers it to the storage space for the ejector plate 13 in the manner described. At the same time, the rest of the tool from the basic form lower box 11a and upper box 12 and the associated firing hood 6 move further into the firing station 8.
  • the shot boiler 27 was filled with sand from the mixing bunker 21 moved over it.
  • the shot boiler and gassing carriage 26 picks up the shot hood and moves it with the shot boiler 27 via the tool 2. This is then closed by the lifting device 17 by the lower box 11 or 11a can be lifted against the top box 12 and both together against the underside of the shooting hood 6 and together with this against the shooting bowl 27.
  • the sand located in the shot bowl 27 is distributed in a conventional manner through the shot hood 6 and through its channels and the shot holes in the upper box 12 into the interior of the tool 2.
  • the gassing hood picks up the ejector plate 13 from its storage space 31.
  • the gassing hood 28 with the ejector plate 13 is moved over the tool 2 and placed thereon gas-tight with its peripheral edge.
  • the gas is then gassed with a catalytically active gas, which activates a binder added to the sand and thereby causes the sand-binder mixture to solidify in the tool.
  • the tool 2 and then the lower box 11a are then lowered in a further work step relative to the upper box 12 (by means of the cylinder 18a), as a result of which the ejector plate 13, which is in the closed state of the tool is supported with rods or feet on the lower box 11a, is released and with its ejection rods 16 simultaneously with the downward movement of the basic lower box 11a the shaped basic molded part 5a or the basic core) is released from the upper box and into the basic lower box 11a presses.
  • the ejector rods 16 are spring-loaded upwards for safety reasons, this can be done by applying additional force, for example by additionally pressing down an ejection piston 28a located in the gassing hood 28.
  • the fastened basic molded part 5a is then located in the basic lower box 11a.
  • the sub-box in question is the base or base sub-box 11 a with a basic molded part, which comes to lie at the bottom in the overall form to be composed of a plurality of molded parts 5, 5 a, then this is picked up by the transfer carriage 42 and in the transfer station 41 move radially outwards together with the basic molded part 5a located in it.
  • the associated upper box 12 and the receptacle on the tool carrier 1 enter the removal station 51 and take over from there a second, identical basic box 11a.
  • two basic-shape lower boxes 11a are used, while the other lower boxes 11 and upper boxes 12 and shooting hoods 6 are only present once.
  • the molded part 5 is then brought into the transfer station 41 with the tool 2 open and adhering in the upper box 12.
  • the transfer carriage 42 moves the basic molding 5a previously transferred to it in the basic mold lower box 11a with the latter into the opened tool 2 and in particular under the subsequent molded part 5 held in its upper box 12.
  • Basic mold lower box 11a and upper box 12 with the corresponding molded parts 5a, 5 are now brought together, for example by lifting the basic form lower box 11a indirectly against the upper box 12 by the lifting device 43 of the transfer station 41 by means of the lower box 11 located there.
  • the ejector 44 presses the ejector plate 13 with its ejector pins 16 downward, so that the molded part 5 initially located in the upper box 12 is pressed out of the upper box 12 when the basic mold lower box 11a and the basic molded part 5a located therein are lowered and with the basic shape - Lower box 11a and in this molded part 5 is lowered.
  • the second molded part was thus connected to the basic molded part 5a.
  • the tool for the second molded part passes through the removal station 51 without any process operation taking place there. All other molded parts 5, from which the mold to be ultimately created is assembled, are produced in the same manner as described and are connected to the molded parts 5,5a previously assembled in the basic mold lower box 11a.
  • the transfer carriage 42 does not take the basic shape lower case 11a carrying the shape out of the tool carrier 1 again, but rather brings the basic shape lower case 11a with the entire mold assembled in it for the removal station 51 (as shown in FIG. 5).
  • the removal carriage 52 of the station takes over the basic form lower box 11a together with the form located in it from the tool carrier 1 and moves it radially outwards.
  • the finished assembled mold is then ejected from the basic mold lower box 11a by means of the ejector 53 and the finished assembled mold can be removed from the device according to the invention in the manner already indicated above.
  • the second basic-shape lower box 11a has returned to the transfer station 41 and has been removed from the tool carrier 1 therein.
  • a tool carrier element with a missing basic shape lower box 11a enters the removal station 51, so that the first basic shape lower box 11a located there is brought back into its place in the tool carrier 1 by the carriage 53.
  • the first basic mold lower box 11a is thus ready for molding a further basic molded part.
  • the device shown contains a carousel of ten, in which ten molded parts to be assembled into a mold can be molded with a shot station 8.
  • the invention Device optimized in terms of construction and operational technology, ie an optimal size was selected with which, in most of the molds to be produced, all of the molded parts 5.5a can be produced with the device.
  • the device according to the invention also offers the possibility of producing molds with more than ten molded parts by feeding and using molded parts produced either on another or other conventional molding machine either by hand or in the manner given in WO 87/07543 in the transfer station 41 can be or the illustrated transfer station 41 is at the same time a transfer station for a further device according to the invention with a tool holder 1 in the manner described with ten or fewer tools, so that in the manner described with this second carousel and its associated firing station 8 the corresponding parts in shaped as described and the overall shape can be assembled from the individual molded parts in the common transfer station 41.
  • a first transfer station 41 can be provided in a device according to the invention, which is a common station for two tool carrier carousels. In the direction of movement behind this, a further transfer station can be provided, to which no further carousel is assigned. Of course, there will also be a removal station.
  • two tool carrier carousels for creating Molds with several individual parts work together, or they can independently create molds with fewer individual mold parts, one of the transfer stations being used by a carousel, which need not have any more, while the other transfer station 41 is only used by the carousel to which it is assigned .
  • the arrangement of the tool carrier and the firing hood carrier is the optimum in the manner explained at the beginning of the description of the figures, both can also be arranged concentrically to one another or offset such that the path of their peripheral edge does not intersect, but rather the firing hood 6 in the region of the Shot station 8 is brought up from the outside.
  • the design shown is the optimal one.
  • the endless conveyor carrying the tools 2 and the shooting hoods 6 does not have to be designed as a circular conveyor or carousel, but can also include, for example, a conveyor chain or the like which surrounds a rectangle, square, oval, an ellipse or the like and which contains the corresponding holders for the Tools 2 and the shooting hood 6 carries.
  • FIGS. 5 and 6 Further preferred configurations of the device according to the invention for carrying out the method according to the invention are shown schematically in FIGS. 5 and 6. Insofar as individual parts fundamentally match, they are identified by the same reference numerals as in FIGS. 1 to 4. If individual elements are not shown in detail in FIGS. 5 and 6, they can in principle be designed as shown in FIGS. 1 to 4 and described with reference to these figures.
  • the tool carrier 1 is designed as a roller conveyor for the tools.
  • the tool conveyor 1 is designed as a rectangular endless conveyor, in which the tools rotate.
  • the shooting hood support 4 which is also designed as a rectangular roller conveyor for the shooting hoods 6.
  • the tracks 1, 4 are also offset in height here. While in the illustrated embodiment of FIG. 5 the firing cap holder 4 is arranged entirely within the tool holder 1, it could also be guided in the rear part (above in FIG. 5) over the part of the tool holder 1 there.
  • the shooting station 8 is also shown schematically. In contrast to the embodiment of FIGS. 1 and 2, in which the molds 2 shot into them are conveyed by the tool conveyor 1 itself to a transfer station 41 separate from the firing station 8, the transfer station 41 is in the embodiment of FIGS. 5 and 6 arranged directly at the shooting station 8.
  • the transfer station 41 Separated from the tool conveyor 1, the transfer station 41 is followed by a tray 61, from which the mold packages produced can be conveyed directly into a casting installation 62 and from there via a tray 63 for the casting for further processing of the cast parts.
  • the design of the device of FIG. 6 is similar, except that, as said, the tool and the firing hood support 1, 4 are linear, which means that the tools 2 and the firing hood 6 are moved back and forth, but with the transport of the composite forms in Figure 6 to the right in the direction of arrow B, while it takes place to the left in the embodiment of Figure 5 in the direction of arrow A.
  • the workflow is basically the same as described with reference to Figures 1 to 4.
  • the first tool with the basic shape lower box arrives in the firing station 8.
  • the associated firing hood 6 and, via this, the mixing hopper 21 as well as a firing kettle and fumigation wagon (not shown in detail; reference is made to the explanation of FIGS. 1 and 2 taken) procedure.
  • the basic shape is then produced in the manner described with reference to FIGS. 1 and 2.
  • the lower box and the upper box of the basic tool are separated from one another in the shooting station 8, the shaped basic part remaining in the basic mold lower box in the manner explained above, which is moved out of the shooting station 8 perpendicularly to the tool carrier web 1 by a transfer carriage of the transfer station 41 , while the associated upper tool is conveyed along the tool carrier path 1.
  • the next tool 2 is conveyed into the firing station 8.
  • the core part to be produced in this tool is produced in the manner also described above. After manufacture, the tool is opened by separating the lower case and upper case, the core part produced being ejected from the lower case and remaining in the upper case.
  • the base part with the base part located in it can then be inserted into the next opened tool by the transfer carriage of the transfer station 41.
  • the manufactured in this The core part is ejected from its upper box and, together with the basic form lower box and the basic form part located therein, is moved out of the firing station 8 again by the transfer station 41.
  • the lower and upper box of the second tool are then conveyed out of the firing station 8 along the tool carrier path 1.
  • the production of the further core and molded parts as well as the assembly of the individual parts to form the overall shape then takes place in basically the same way. For details, reference may be made to the explanation of FIGS. 1 to 3.
  • the entire mold After the entire mold has been produced, it can be conveyed in the direction of arrow A to the storage for the core package 61 and from there for the casting of the casting into the casting installation 62, from which the casting, optionally after intermediate storage (63) in the direction of the arrow C. the device is advanced. Then the upper box of the first tool again arrives at the firing station 8, where the basic mold lower box freed from the core package is likewise retracted into the firing station 8, so that the subsequent molded parts for a further core package and this can be produced. If necessary, it is also possible to work with two basic shape lower boxes for an associated upper box in the manner described above.
  • the procedure in the embodiment of FIG. 6 is fundamentally the same, the tools 2 and the firing hoods 6 only being moved back in the opposite direction to the original conveying direction during processing after the production of all molded and core parts and of the core package composed of these. If the upper box of the first tool is moved through the firing station 8, at the same time through the transfer station 41 the associated basic shape lower box is introduced into the firing station and brought together with the upper box. Then the individual mold and core parts for the next mold or core package and this can be produced in the same way.
  • FIGS. 5 and 6 are surrounded by a housing 66.
  • FIGS. 5 and 6 reference can in principle be made to the explanation for FIGS. 1 to 4 for a preferred embodiment thereof.

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Claims (17)

  1. Dispositif pour fabriquer des moules de fonderie constitués de plusieurs pièces de moules juxtaposées, notamment de noyaux, chaque pièce de moule étant moulée séparément dans un conformateur de moules formé d'au moins deux châssis à pièces, comportant au moins un convoyeur-conformateur (1) cadencé pour les conformateurs de moules (2), conformateurs (2) pour chacun desquels est adapté un transporteur (4) de hottes d'injection (6) synchrone avec eux, et au moins un poste d'injection (8) commun à plusieurs conformateurs (2), associé à un convoveur-conformateur, caractérisé en ce que les conformateurs (2) et les hottes d'injection (6) associées peuvent être acheminés décalés les uns par rapport aux autres par leurs dispositifs de transport (1,4) vers le poste d'injection (8), et en ce que les hottes d'injection (6) et les conformateurs (2) peuvent être déplacés l'un au-dessus de l'autre pour l'injection des noyaux dans le poste d'injection (8).
  2. Dispositif selon la revendication 1, caractérisé en ce que le poste d'injection (8) présente un chariot (26) d'injection et de gazage, déplaçable linéairement au-dessus du conformateur (2) présent dans le poste d'injection (8), comportant un réceptacle d'injection (27) et une hotte de gazage (28), le réceptacle d'injection (27) étant muni de dispositifs pour la réception et le transfert de la hotte d'injection (6) au-dessus du conformateur (2).
  3. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé par un dispositif de déplacement (32) pour saisir des plaques d'éjection (13) et les transporter des conformateurs (2) vers un poste de dépôt du convoyeur (1) devant le poste d'injection (8).
  4. Dispositif selon la revendication 3, caractérisé en ce que le dispositif de déplacement (32) comporte un bras pivotant (33).
  5. Dispositif selon l'une quelconque des revendications 3 à 4, caractérisé en ce que la hotte de gazage (28) présente un dispositif (28a) pour la réception et l'éjection des plaques d'éjection (13).
  6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les convoyeurs (1) pour les moules et les transporteurs (4) pour les hottes d'injection (6) sont rotatifs, en particulier sous la forme de carrousels portant à leur périphérie les conformateurs (2) et les hottes d'injection (6).
  7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les axes de rotation (3,7) des convoyeurs (1) et des transporteurs (4) sont disposés dans la zone délimitée par leur périphérie, mais décalés les uns par rapport aux autres perpendiculairement à leurs axes.
  8. Dispositif selon la revendication 7, caractérisé en ce que le poste d'injection (8) est radial par rapport aux deux axes de rotation (3,7).
  9. Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'il existe plusieurs trémies mélangeuses pouvant être portées à mi-hauteur à l'endroit de la position dans laquelle ces hottes d'injection (6) sont amenées par les supports de hottes d'injection pour l'injection dans les conformateurs (2) du matériau (sable) de moulage des noyaux.
  10. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le poste d'injection est suivi d'un dispositif (41) (poste de transfert) pour l'évacuation hors du convoyeur-conformateur (1) pour les conformateurs (2,11,12) d'un châssis inférieur pour moule de fond (11a) avec son moule de fond (5a) et pour son retour dans la zone des conformateurs ouverts suivants.
  11. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé par des dispositifs de maintien de parties de moules moulées dans les châssis supérieurs (12) des conformateurs (2) et pour l'assemblage d'une pièce de moule (5) ainsi maintenue avec des pièces de moules (5,5a) maintenues dans un châssis inférieur (11a) d'un autre conformateur, le cas échéant déjà assemblées (paquet de pièces de moules).
  12. Dispositif selon l'une quelconque des revendications précédentes, caractérisé par un poste d'évacuation (51) comprenant un dispositif d'évacuation hors du trajet de transport du convoyeur-conformateur (1) d'un moule composé des pièces de moules (5,5a) assemblées dans un châssis inférieur (11a) et de remise en place du châssis inférieur de moule de fond (11a) vide dans le convoyeur-conformateur (1).
  13. Procédé pour fabriquer des moules de fonderie constitués de plusieurs pièces de moules juxtaposées, notamment de noyaux, dans lequel des pièces de moules sont moulées séparément par injection de sable de fonderie dans un conformateur formé d'au moins deux châssis à pièces, les conformateurs étant transportés pas à pas au moyen d'un convoyeur, des hottes d'injection associées aux conformateurs étant transportées de manière synchrone avec ceux-ci, les hottes d'injection et les conformateurs étant ainsi acheminés vers un poste d'injection commun, caractérisé en ce que les hottes d'injection sont d'abord acheminées au moyen de leurs dispositifs de transport vers le poste d'injection dans une position décalée latéralement par rapport aux conformateurs, et qu'ensuite seulement, les hottes d'injection et les conformateurs sont déplacés les uns au-dessus des autres dans leur position d'injection pour l'injection du sable de fonderie.
  14. Procédé selon la revendication 13, caractérisé en ce qu'une hotte d'injection allant au poste d'injection est amenée linéairement au-dessus des conformateurs et en ce que la hotte d'injection et les conformateurs d'injection du sable de fonderie sont déplacés en sens contraire.
  15. Procédé selon l'une quelconque des revendications 13 ou 14, caractérisé en ce que des plaques d'éjection transportées par un convoyeur à bande sans fin avec les conformateurs sont enlevées des conformateurs devant le poste d'injection, déviées de leur trajet de déplacement, amenées dans le poste d'injection où elles sont saisies au moyen d'une hotte de gazage, déplacées linéairement au-dessus des conformateurs après injection du sable de fonderie dans ceux-ci et à nouveau ramenées avec les conformateurs.
  16. Procédé selon l'une quelconque des revendications 13 à 15, caractérisé en ce que, consécutivement à la fabrication de chaque pièce de moule, un châssis inférieur pour moule de fond comportant des pièces de moules déjà assemblées est retiré linéairement du trajet de déplacement des conformateurs et introduit alternativement dans le trajet de déplacement des conformateurs pour la réception et l'assemblage d'une autre pièce de moule, jusqu'à ce que l'assemblage des pièces de moules constituant le moule souhaité soit complet.
  17. Procédé selon la revendication 16, caractérisé en ce que les pièces de moules sont assemblées de façon qu'une pièce de moule de fond et, le cas échéant, d'autres pièces de moules déjà assemblées à celle-ci sont soulevées vers une autre pièce de moule à assembler et en ce que celle-ci est alors dégagée de son châssis de moule supérieur et assemblée par pression à la pièce de moule de fond, respectivement aux autres pièces de moules déjà assemblées.
EP91101420A 1990-02-28 1991-02-04 Procédé et dispositif pour fabriquer des noyaux de fonderie Expired - Lifetime EP0444431B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4006176A DE4006176A1 (de) 1990-02-28 1990-02-28 Verfahren und vorrichtung zum herstellen von kernen fuer giessereizwecke
DE4006176 1990-02-28

Publications (3)

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EP0444431A2 EP0444431A2 (fr) 1991-09-04
EP0444431A3 EP0444431A3 (en) 1993-03-17
EP0444431B1 true EP0444431B1 (fr) 1996-05-08

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Application Number Title Priority Date Filing Date
EP91101420A Expired - Lifetime EP0444431B1 (fr) 1990-02-28 1991-02-04 Procédé et dispositif pour fabriquer des noyaux de fonderie

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US (1) US5242008A (fr)
EP (1) EP0444431B1 (fr)
JP (1) JPH0515946A (fr)
DE (2) DE4006176A1 (fr)
ES (1) ES2088438T3 (fr)

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US5711361A (en) * 1993-12-03 1998-01-27 Adolf Hottinger Maschinenbau Gmbh Method for producing ready-to-use casting shells or core assemblies
RU2153949C1 (ru) * 1999-11-03 2000-08-10 Открытое акционерное общество "Нижнетагильский котельно-радиаторный завод" Установка для изготовления литейных стержней
US6986644B2 (en) * 2003-05-02 2006-01-17 Envirotech Pumpsystems, Inc. Hard material impeller and methods and apparatus for construction
DE102004014542B4 (de) * 2003-08-06 2007-10-31 Hottinger Maschinenbau Gmbh Vorrichtung zur Fertigung von Kernpaketen
US20050126734A1 (en) * 2003-12-12 2005-06-16 Mckibben Kenneth D. Shell sand core machine
CN102019355B (zh) * 2010-11-04 2012-06-20 广东省韶铸集团有限公司 一种冒口易割片的制作设备及其制作方法
CN103192036B (zh) * 2013-04-24 2016-01-06 无锡市蠡湖铸业有限公司 全自动圆盘射芯机
EP3272441B1 (fr) * 2016-07-19 2020-10-21 Loramendi, S.COOP. Machine de fabrication de noyaux en sable
US11103918B2 (en) 2018-03-19 2021-08-31 Honda Motor Co., Ltd. Core blowing apparatus for robotic system
KR102208553B1 (ko) * 2019-04-25 2021-01-28 백수철 알루미늄 인고트 연속주조장치
CN113403458B (zh) * 2021-06-23 2022-03-25 唐山鑫业科技有限公司 白心可锻铸铁生产工艺
JP7697362B2 (ja) * 2021-12-08 2025-06-24 トヨタ自動車株式会社 金型装置
US12330209B2 (en) 2021-12-27 2025-06-17 Metals Engineering Kabushiki Kaisha Casting mold shaping device and casting mold shaping method

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Also Published As

Publication number Publication date
DE59107777D1 (de) 1996-06-13
EP0444431A3 (en) 1993-03-17
JPH0515946A (ja) 1993-01-26
ES2088438T3 (es) 1996-08-16
US5242008A (en) 1993-09-07
DE4006176A1 (de) 1991-09-05
EP0444431A2 (fr) 1991-09-04

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