EP0569855B1 - Plant and process for moulding under pressure ceramic articles, in particular W.C. bowls - Google Patents
Plant and process for moulding under pressure ceramic articles, in particular W.C. bowls Download PDFInfo
- Publication number
- EP0569855B1 EP0569855B1 EP93107373A EP93107373A EP0569855B1 EP 0569855 B1 EP0569855 B1 EP 0569855B1 EP 93107373 A EP93107373 A EP 93107373A EP 93107373 A EP93107373 A EP 93107373A EP 0569855 B1 EP0569855 B1 EP 0569855B1
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- European Patent Office
- Prior art keywords
- clamping
- side parts
- casting
- cores
- axial
- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
- B28B1/265—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor pressure being applied on the slip in the filled mould or on the moulded article in the mould, e.g. pneumatically, by compressing slip in a closed mould
- B28B1/266—Means for counteracting the pressure being applied on the slip or on the moulded article in the mould, e.g. means for clamping the moulds parts together in a frame-like structure
Definitions
- a known from DE-A-24 45 005 system of this type has a longitudinal guide in the form of a runway with cars arranged one behind the other, each second of which carries a foot part of a mold, while on the other cars two side parts belonging to adjacent molds have backs Back are arranged.
- Each mold also has a rear wall core which is inserted transversely to the axial direction of the longitudinal guide between the associated side parts and fastened to them with a central lock as soon as the side parts have been clamped together by a common axial clamping device. After casting and subsequent solidification of moldings, the central lock must be released on each mold so that the back wall core is removed can be.
- This process is difficult to automate and is therefore usually carried out with a hand-controlled auxiliary device, with which the rear wall cores are successively removed from the individual casting molds and are also inserted one after the other into the individual casting molds in order to prepare a further casting process.
- the invention has for its object to facilitate the insertion and removal of cores, for example water edge cores and / or rear wall cores, in a system for die-casting ceramic moldings, in particular toilet bowls, bidets or the like. It should be taken into account that the side parts of the molds can be deformed by the closing forces of the axial clamping device by several millimeters, so that the exact position that each individual mold occupies in the clamped state of all the molds is not known from the outset.
- cores for example water edge cores and / or rear wall cores
- the cores which can be moved out transversely to the axial direction, for example upwards and / or backwards, can be handled together, and if desired simultaneously, safely, the couplings according to the invention ensuring that the elastic deformations which the side parts underneath the action of the axial clamping device suffer, neither damage nor inaccuracies when inserting the cores.
- transverse clamping devices can rest against the casting molds without pressure.
- transverse clamping devices can also be completely withdrawn from the casting molds.
- the system is used for the die casting of moldings 10 - toilet bowls are shown - made of ceramic mass.
- the system includes two plate-shaped stands 12 and 14 which are firmly connected to one another by two pairs of horizontal, parallel tie rods 16 arranged one above the other.
- the right-hand stand 14 in FIGS. 1 and 2 carries an axial clamping device 18 with a hydraulic piston-cylinder unit, the axis of which is arranged parallel to the tie rods 16 and to the axis A of a longitudinal guide 20.
- the longitudinal guide 20 is formed by a pair of rails which extends between the two uprights 12 and 14 and is fastened at regular intervals to the lower pair of tie rods 16 by cross members 22 (FIG. 6).
- Long carriages 24 and short carriages 26 are arranged alternately one behind the other on the longitudinal guide 20.
- the long carriages 24 each have a downward extension 28 for support purposes, which will be explained later.
- Casting molds 30 are arranged on the carriages 24 and 26, each of which has two mutually symmetrical side parts 32 and 34, a foot part composed of a foot core 36 and foot ring 38, an upper core 40 (water edge core) and a rear core 42 (rear wall core).
- the base parts 36, 38 each rest on a long carriage 24.
- Side parts 32 and 34 which belong to adjacent molds 30, are fastened in pairs back to back on a short carriage 26; The only exceptions to this are the carriage 26 closest to the stand 12, which only carries a left side part 32, and the carriage 26 closest to the stand 14, which only carries a right side part 34.
- All casting molds 30 are assigned a common clamping cage 44 which can be moved back and forth by means of its own drive 46 on a horizontal transverse guide 48 at right angles to the axis A between its working position shown in FIG. 3 and its rest position shown in FIGS. 4 and 6 .
- the clamping cage 44 has a plurality of clamping frames 50, each arranged in a plane normal to the axis A, that is to say perpendicular, and firmly connected to one another by longitudinal struts (not shown).
- Each of the casting molds 30 is assigned to one of the clamping frames 50 such that, in the working position of the clamping cage 44, it encompasses the associated casting mold, as shown in FIG. 3.
- each clamping frame 50 Four cross clamping devices are arranged on each clamping frame 50, namely an upper 52, a rear 54, a lower 56 and a front 58. All cross clamping devices 52, 54, 56 and 58 each have a hydraulic piston-cylinder unit.
- the purpose of the upper cross-tensioning device 52 is to press the upper core 40 downwards during casting and to pull it out after the cast molding 10 has solidified.
- the rear transverse tensioning device 54 acts on the rear core 42 in a corresponding manner.
- the two remaining transverse clamping devices 56 and 58 generate the required counterforces by pressing against the shoulder 28 from below or against the side parts 32 and 34 from the front, as long as the associated casting mold 30 is to be held firmly together.
- the front transverse tensioning device 58 is on a leg 60 attached, which is guided vertically displaceably on the associated clamping frame 50 and can be raised and lowered by means of a drive, not shown.
- a leg 60 In the upper end position of the leg 60 (FIGS. 4 and 6) of all the clamping frames 50, the clamping cage 44 can be moved back and forth between its working and its rest position.
- the casting molds 30 consist essentially of porous plastic; however, the upper core 40 and the rear core 42 of each casting mold each have a steel plate on their top and rear sides, which cooperates with an electromagnetic clutch 62 fastened to the associated transverse clamping device 52 and 54, respectively.
- the couplings 62 each have a permanent magnet which is constantly striving to establish a firm connection between the relevant transverse tensioning device 52 and 54 and the associated core 40 or 42 by magnetic attraction of the adjacent steel plate.
- the couplings 62 each have an electromagnet which is polarized so that it cancels the effect of the permanent magnet when excited and thus releases the associated transverse tensioning device 52 or 54 from the core 40 or 42 assigned to it.
- the two stands 12 and 14 are additionally connected to one another by an upper crane runway 64 parallel to the longitudinal guide 20, on which a removal device 66 can be moved.
- the removal device 66 is essentially of a known type and has the task of transferring the moldings 10 produced in the casting molds 30 to a conveyor arranged parallel to the longitudinal guide.
Description
Die Erfindung betrifft eine Anlage zum Druckgießen keramischer Formlinge, insbesondere WC-Schüsseln, mit
- einer Längsführung, die eine axiale Richtung definiert,
- mehreren Gießformen, die auf der Längsführung bewegbar sind und je mindestens zwei Seitenteile, ein Fußteil und mindestens einen quer zur axialen Richtung zwischen den Seitenteilen herausbewegbaren Kern aufweisen, und
- einer Axialspannvorrichtung zum gemeinsamen Spannen der Gießformen in axialer Richtung.
- a longitudinal guide that defines an axial direction,
- a plurality of casting molds which are movable on the longitudinal guide and each have at least two side parts, a foot part and at least one core which can be moved out transversely to the axial direction between the side parts, and
- an axial clamping device for clamping the molds together in the axial direction.
Eine aus der DE-A-24 45 005 bekannte Anlage dieser Gattung hat eine Längsführung in Gestalt einer Rollbahn mit hintereinander angeordneten Wagen, von denen jeder zweite ein Fußteil einer Gießform trägt, während auf den übrigen Wagen je zwei zu benachbarten Gießformen gehörige Seitenteile Rücken an Rücken angeordnet sind. Jede Gießform weist ferner einen Rückwandkern auf, der quer zur axialen Richtung der Längsführung zwischen die zugehörigen Seitenteile eingeschoben und mit einem Zentralverschluß an diesen befestigt wird, sobald die Seitenteile durch eine gemeinsame Axialspannvorrichtung zusammengespannt worden sind. Nach dem Gießen und einer anschließenden Verfestigung von Formlingen muß an jeder Gießform der Zentralverschluß gelöst werden, damit der Rückwandkern entfernt werden kann. Dieser Vorgang läßt sich schlecht automatisieren und wird deshalb üblicherweise mit einer von Hand gesteuerten Hilfsvorrichtung durchgeführt, mit der die Rückwandkerne nacheinander von den einzelnen Gießformen entfernt und zum Vorbereiten eines weiteren Gießvorgangs ebenfalls nacheinander wieder in die einzelnen Gießformen eingesetzt werden.A known from DE-A-24 45 005 system of this type has a longitudinal guide in the form of a runway with cars arranged one behind the other, each second of which carries a foot part of a mold, while on the other cars two side parts belonging to adjacent molds have backs Back are arranged. Each mold also has a rear wall core which is inserted transversely to the axial direction of the longitudinal guide between the associated side parts and fastened to them with a central lock as soon as the side parts have been clamped together by a common axial clamping device. After casting and subsequent solidification of moldings, the central lock must be released on each mold so that the back wall core is removed can be. This process is difficult to automate and is therefore usually carried out with a hand-controlled auxiliary device, with which the rear wall cores are successively removed from the individual casting molds and are also inserted one after the other into the individual casting molds in order to prepare a further casting process.
Der Erfindung liegt die Aufgabe zugrunde, bei einer Anlage zum Druckgießen keramischer Formlinge, insbesondere WC-Schüsseln, Bidets oder dergleichen, das Einsetzen und Entnehmen von Kernen, beispielsweise Wasserrandkernen und/oder Rückwandkernen, zu erleichtern. Dabei ist zu berücksichtigen, daß die Seitenteile der Gießformen durch die Schließkräfte der Axialspannvorrichtung um mehrere Millimeter verformt werden können, so daß die genaue Position, die jede einzelne Gießform in zusammengespanntem Zustand sämtlicher Gießformen einnimmt, nicht von vorneherein feststeht.The invention has for its object to facilitate the insertion and removal of cores, for example water edge cores and / or rear wall cores, in a system for die-casting ceramic moldings, in particular toilet bowls, bidets or the like. It should be taken into account that the side parts of the molds can be deformed by the closing forces of the axial clamping device by several millimeters, so that the exact position that each individual mold occupies in the clamped state of all the molds is not known from the outset.
Die genannte Aufgabe ist erfindungsgemäß ausgehend von einer Anlage der eingangs beschriebenen Gattung dadurch gelöst, daß
- den Gießformen ein Spannkäfig zugeordnet ist, der Querspannvorrichtungen zum Zusammenhalten des Fußteils und des bzw. jedes Kerns mit den Seitenteilen jeder Gießform aufweist, und
- die Kerne mit den zugehörigen Querspannvorrichtungen durch Kupplungen verbunden sind, die in einem ersten Schaltzustand ein Herausziehen und Wiedereinsetzen der Kerne in einer definierten axialen Lage ermöglichen, in einem zweiten Schaltzustand hingegen eine axiale Relativverschiebung der Kerne und Seitenteile in bezug auf den Spannkäfig ermöglichen.
- a clamping cage is assigned to the casting molds and has transverse clamping devices for holding the foot part and the or each core together with the side parts of each casting mold, and
- the cores are connected to the associated transverse clamping devices by couplings which, in a first switching state, enable the cores to be pulled out and reinserted in a defined axial position, while in a second switching state they enable an axial relative displacement of the cores and side parts with respect to the clamping cage.
Mit dem erfindungsgemäßen Spannkäfig lassen sich die quer zur axialen Richtung, also beispielsweise nach oben und/oder nach hinten, herausbewegbaren Kerne gemeinsam, und falls gewünscht gleichzeitig, sicher handhaben, wobei die erfindungsgemäßen Kupplungen dafür sorgen, daß die elastischen Verformungen, welche die Seitenteile unter der Einwirkung der Axialspannvorrichtung erleiden, weder zu Beschädigungen noch zu Ungenauigkeiten beim Einsetzen der Kerne führen.With the clamping cage according to the invention, the cores which can be moved out transversely to the axial direction, for example upwards and / or backwards, can be handled together, and if desired simultaneously, safely, the couplings according to the invention ensuring that the elastic deformations which the side parts underneath the action of the axial clamping device suffer, neither damage nor inaccuracies when inserting the cores.
Vorteilhafte Weiterbildungen der erfindungsgemäßen Anlage sind Gegenstand der Ansprüche 2 bis 6.Advantageous developments of the system according to the invention are the subject of claims 2 to 6.
Die erfindungsgemäße Anlage wird vorzugsweise in folgender Schrittfolge betrieben:
- a) druckloses Aneinanderlegen der Seitenteile der Gießformen mittels der Axialspannvorrichtung,
- b) Einsetzen der Kerne in die Gießformen, während die Kupplungen in ihrem ersten Schaltzustand sind,
- c) Umschalten der Kupplungen in ihren zweiten Schaltzustand,
- d) axiales Zusammenspannen der Seitenteile mittels der Axialspannvorrichtung,
- e) Zusammenspannen der Kerne und Seitenteile mittels der Querspannvorrichtungen,
- f) Gießen und Verfestigenlassen der Formlinge,
- g) Entlasten der Querspannvorrichtungen,
- h) Expandierenlassen der Gießformen durch Entlasten der Axialspannvorrichtung,
- i) Umschalten der Kupplungen in ihren ersten Schaltzustand und Herausziehen der durch die Kupplungen mit den zugehörigen Querspannvorrichtungen verbundenen Kerne,
- j) Auseinanderbewegen der Seitenteile und Entnehmen der Formlinge nacheinander aus den einzelnen Gießformen.
- a) pressure-free contacting of the side parts of the casting molds by means of the axial clamping device,
- b) inserting the cores into the molds while the couplings are in their first switching state,
- c) switching the clutches into their second switching state,
- d) axial clamping of the side parts by means of the axial clamping device,
- e) clamping the cores and side parts together using the transverse clamping devices,
- f) pouring and solidifying the moldings,
- g) relieving the tensioning devices,
- h) allowing the molds to expand by relieving the axial clamping device,
- i) switching the couplings into their first switching state and pulling out the cores connected by the couplings to the associated transverse clamping devices,
- j) moving the side parts apart and removing the moldings one after the other from the individual casting molds.
Während und nach dem Schritt c) können die Querspannvorrichtungen an den Gießformen drucklos anliegen. Gleiches gilt für den Schritt h). Während dieser beiden Schritte können Querspannvorrichtungen aber auch vollständig von den Gießformen zurückgezogen sein. Es kann zweckmäßig sein, zur Vorbereitung auf den Schritt i) unmittelbar nach dem Schritt h) die Querspannvorrichtungen zu betätigen, damit die Kupplungen sich fest an die zugehörigen Kerne anlegen.During and after step c), the transverse clamping devices can rest against the casting molds without pressure. The same applies to step h). During these two steps, transverse clamping devices can also be completely withdrawn from the casting molds. In preparation for step i), it may be expedient to actuate the transverse clamping devices immediately after step h), so that the couplings are firmly attached to the associated cores.
Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand schematischer Zeichnungen mit weiteren Einzelheiten erläutert. Es zeigt:
- Fig. 1
- eine Seitenansicht einer Anlage zum Druckgießen keramischer Formlinge in einer Stellung während des Druckgießens,
- Fig. 2
- eine Teil-Seitenansicht der Anlage beim Öffnen einer Gießform,
- Fig. 3
- den Querschnitt III-III in Fig. 1,
- Fig. 4
- den Querschnitt IV-IV in Fig. 2,
- Fig. 5
- einen vergrößerten Ausschnitt aus Fig. 4 und
- Fig. 6
- eine der Fig. 4 ähnliche Darstellung während des Entnehmens eines gegossenen Formlings.
- Fig. 1
- 2 shows a side view of a system for die-casting ceramic moldings in one position during die-casting,
- Fig. 2
- a partial side view of the system when opening a mold,
- Fig. 3
- the cross section III-III in Fig. 1,
- Fig. 4
- the cross section IV-IV in Fig. 2,
- Fig. 5
- an enlarged section of Fig. 4 and
- Fig. 6
- an illustration similar to FIG. 4 during the removal of a cast molding.
Die Anlage dient zum Druckgießen von Formlingen 10 - dargestellt sind WC-Schüsseln - aus keramischer Masse. Zur Anlage gehören zwei plattenförmige Ständer 12 und 14, die durch zwei übereinander angeordnete Paare waagerechter, paralleler Zuganker 16 miteinander fest verbunden sind. Der in Fig. 1 und 2 rechte Ständer 14 trägt eine Axialspannvorrichtung 18 mit einer hydraulischen Kolbenzylindereinheit, deren Achse parallel zu den Zugankern 16 und zu der Achse A einer Längsführung 20 angeordnet ist. Die Längsführung 20 ist von einem Schienenpaar gebildet, das sich zwischen den beiden Ständern 12 und 14 erstreckt und in regelmäßigen Abständen durch Traversen 22 (Fig. 6) an dem unteren Paar Zuganker 16 befestigt ist.The system is used for the die casting of moldings 10 - toilet bowls are shown - made of ceramic mass. The system includes two plate-shaped
Auf der Längsführung 20 sind lange Wagen 24 und kurze Wagen 26 abwechselnd hintereinander angeordnet. Die langen Wagen 24 haben je einen nach unten ragenden Ansatz 28 zu Abstützzwecken, die später erläutert werden. Auf den Wagen 24 und 26 sind Gießformen 30 angeordnet, die je zwei zueinander symmetrische Seitenteile 32 und 34, je ein aus einem Fußkern 36 und Fußring 38 zusammengesetztes Fußteil, einen oberen Kern 40 (Wasserrandkern) sowie einen hinteren Kern 42 (Rückwandkern) aufweisen.
Die Fußteile 36, 38 ruhen auf je einem langen Wagen 24. Seitenteile 32 und 34, die zu benachbarten Gießformen 30 gehören, sind paarweise Rücken an Rücken auf je einem kurzen Wagen 26 befestigt; Ausnahmen bilden insoweit nur der dem Ständer 12 nächste Wagen 26, der nur ein linkes Seitenteil 32 trägt, sowie er dem Ständer 14 nächste Wagen 26, der nur ein rechtes Seitenteil 34 trägt.The
Sämtlichen Gießformen 30 ist ein gemeinsamer Spannkäfig 44 zugeordnet, der mittels eines eigenen Antriebs 46 auf einer waagerechten Querführung 48 im rechten Winkel zur Achse A zwischen seiner in Fig. 3 abgebildeten Arbeitsstellung und seiner in Fig. 4 und 6 abgebildeten Ruhestellung hin- und herbewegbar ist. Der Spannkäfig 44 weist mehrere Spannrahmen 50 auf, die in je einer zur Achse A normalen, also senkrechten, Ebene angeordnet und durch nicht dargestellte Längsstreben fest miteinander verbunden sind. Jeder der Gießformen 30 ist einer der Spannrahmen 50 derart zugeordnet, daß er in der Arbeitsstellung des Spannkäfigs 44 die zugehörige Gießform, wie in Fig. 3 dargestellt, umgreift.All casting
An jedem Spannrahmen 50 sind vier Querspannvorrichtungen angeordnet, nämlich eine obere 52, eine hintere 54, eine untere 56 und eine vordere 58. Sämtliche Querspannvorrichtungen 52, 54, 56 und 58 weisen je eine hydraulische Kolbenzylindereinheit auf. Die obere Querspannvorrichtung 52 hat den Zweck, den oberen Kern 40 beim Gießen nach unten zu drücken und ihn nach Verfestigung des gegossenen Formlings 10 nach oben herauszuziehen. Die hintere Querspannvorrichtung 54 wirkt in entsprechender Weise auf den hinteren Kern 42 ein. Die beiden übrigen Querspannvorrichtungen 56 und 58 erzeugen die erforderlichen Gegenkräfte, indem sie von unten her gegen den Ansatz 28 bzw. von vorne her gegen die Seitenteile 32 und 34 drücken, solange die zugehörige Gießform 30 fest zusammengehalten werden soll. Die vordere Querspannvorrichtung 58 ist an einem Schenkel 60 befestigt, der am zugehörigen Spannrahmen 50 senkrecht verschiebbar geführt und mittels eines nicht dargestellten Antriebs heb- und senkbar ist. In der oberen Endstellung des Schenkels 60 (Fig. 4 und 6) sämtlicher Spannrahmen 50 läßt sich der Spannkäfig 44 zwischen seiner Arbeits- und seiner Ruhestellung hin- und herbewegen.Four cross clamping devices are arranged on each clamping
Die Gießformen 30 bestehen im wesentlichen aus porösem Kunststoff; der obere Kern 40 und der hintere Kern 42 jeder Gießform weisen jedoch an ihrer Ober- bzw. Rückseite je eine Stahlplatte auf, die mit einer an der zugehörigen Querspannvorrichtung 52 bzw. 54 befestigten, elektromagnetischen Kupplung 62 zusammenwirkt. Die Kupplungen 62 haben je einen Dauermagneten, der ständig bestrebt ist, durch magnetische Anziehung der benachbarten Stahlplatte eine feste Verbindung zwischen der betreffenden Querspannvorrichtung 52 und 54 und dem zugehörigen Kern 40 bzw. 42 herzustellen. Ferner haben die Kupplungen 62 je einen Elektromagneten, der so gepolt ist, daß er bei Erregung die Wirkung des Dauermagneten aufhebt und somit die zugehörige Querspannvorrichtung 52 bzw. 54 von dem ihr zugeordneten Kern 40 bzw. 42 löst.The casting
Die beiden Ständer 12 und 14 sind zusätzlich durch eine obere, zur Längsführung 20 parallele Kranbahn 64 miteinander verbunden, auf der eine Entnahmevorrichtung 66 verfahrbar ist. Die Entnahmevorrichtung 66 ist im wesentlichen von bekannter Bauart und hat die Aufgabe, die in den Gießformen 30 hergestellten Formlinge 10 auf einen parallel zur Längsführung angeordneten Förderer umzusetzen.The two stands 12 and 14 are additionally connected to one another by an
Claims (7)
- An apparatus for diecasting ceramic articles, especially toilet bowls, comprising- a longitudinal guide (20) defining an axial direction (A),- a plurality of casting moulds (30) adapted to be moved on the longitudinal guide (20) and each including at least two side parts (32, 34), a bottom part (36, 38), and at least one core (40, 42) adapted to be pulled out transversely to the axial direction (A) between the side parts (32, 34), and- an axial clamping device (18) for jointly clamping the casting moulds (30) in axial direction (A),
characterized in that- the casting moulds (30) have a clamping cage (44) assigned to them that includes transverse clamping devices (52, 54, 56, 58) for keeping the bottom part (36, 38) and the or each core (40, 42) together with the side parts (32, 34) of each casting mould (30), and- the cores (40, 42) are connected with the associated transverse clamping devices (52, 54) by couplings (62) which, in a first switching position, allow to pull out and reinsert the cores (40, 42) in a defined axial position, but, in a second switching position, allow an axial relative movement of the cores (40, 42) and the side parts (32, 34) with respect to the clamping cage (44). - The apparatus according to claim 1,
characterized in that the clamping cage (44) for each casting mould (30) includes a clamping frame (50) extending substantially transversely with respect to the axial direction (A) and carrying the transverse clamping devices (52, 54, 56, 58) for the respective casting mould (30). - The apparatus according to claim 2,
characterized in that the clamping frames (50) include one leg (60) each which carries one of the transverse clamping devices (58) and is adapted to be moved to a retraction position in which access to the casting mould (30) for removing a moulded article (10) is unimpeded. - The apparatus according to claim 3,
characterized in that the clamping cage (44) is adapted to be moved transversely to the axial direction (A) into an inoperative position. - The apparatus according to any one of claims 1 to 4,
characterized in that the couplings (62) are magnetic couplings. - The apparatus according to claim 5,
characterized in that each coupling (62) comprises a permanent magnet and an electromagnet, the latter being switched such that, when energized, it generates a magnetic field opposed to the permanent magnet. - A method of operating an apparatus according to any one of claims 1 to 6, the operating steps being as follows:a) Joining without pressure being applied the side parts (32, 34) of the casting moulds (30) by means of the axial clamping device (18);b) inserting the cores (40, 42) into the casting mould (30);c) switching over the couplings (62) to their second condition;d) clamping the side parts (32, 34) together axially by means of the axial clamping device (18);e) clamping the cores (40, 42) and the side parts (32, 34) together by means of the transverse clamping devices (52, 54, 56, 58);f) casting the articles and allowing them to solidify;g) relieving the transverse clamping devices (52, 54, 56, 58);h) allowing the casting moulds (30) to expand by relieving the axial clamping device (18);i) switching over the couplings (62) to their first condition and pulling out the cores (40, 42) connected with the associated transverse clamping devices (52, 54) by the couplings;j) moving the side parts (32, 34) apart and removing the moulded articles (10), one after the other, from the individual casting moulds (30).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4216212A DE4216212C1 (en) | 1992-05-15 | 1992-05-15 | |
| DE4216212 | 1992-05-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0569855A1 EP0569855A1 (en) | 1993-11-18 |
| EP0569855B1 true EP0569855B1 (en) | 1995-09-20 |
Family
ID=6459041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93107373A Expired - Lifetime EP0569855B1 (en) | 1992-05-15 | 1993-05-06 | Plant and process for moulding under pressure ceramic articles, in particular W.C. bowls |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0569855B1 (en) |
| DE (2) | DE4216212C1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9312232U1 (en) * | 1993-08-16 | 1993-10-28 | Dorst Masch & Anlagen | Press for die-casting ceramic moldings |
| IT1268829B1 (en) * | 1994-06-02 | 1997-03-13 | Ideal Standard | AUTOMATIC PRESSURE CASTING BENCH |
| DE19725942C2 (en) * | 1997-06-19 | 2001-02-08 | Sama Maschb Gmbh | Die casting machine for sanitary articles |
| ITUA20162529A1 (en) * | 2016-04-12 | 2017-10-12 | Siti B & T Group Spa | Line for the production of sanitary items |
| IT201900016451A1 (en) * | 2019-09-17 | 2021-03-17 | Siti B & T Group Spa | EQUIPMENT FOR THE PRODUCTION OF SANITARY ITEMS |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2445005A1 (en) * | 1974-09-20 | 1976-04-01 | Duravit Hornberg | Sanitary ware made by automated process - ceramic lavatory bowls slip-cast using horizontal stack moulding |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3671160A (en) * | 1969-10-13 | 1972-06-20 | Mansfield Sanitary Inc | Apparatus for a system to extricate intricate ceramic shapes from multiple piece molds |
| JPH01222901A (en) * | 1988-03-02 | 1989-09-06 | Toto Ltd | Press molding device for earthenware |
| JPH0365304A (en) * | 1989-08-03 | 1991-03-20 | Toto Ltd | Molding apparatus for pressurizing and casting slip for sanitary earthenware |
| DE4206279C1 (en) * | 1992-02-28 | 1993-04-22 | Erich Netzsch Gmbh & Co Holding Kg, 8672 Selb, De |
-
1992
- 1992-05-15 DE DE4216212A patent/DE4216212C1/de not_active Expired - Fee Related
-
1993
- 1993-05-06 EP EP93107373A patent/EP0569855B1/en not_active Expired - Lifetime
- 1993-05-06 DE DE59300617T patent/DE59300617D1/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2445005A1 (en) * | 1974-09-20 | 1976-04-01 | Duravit Hornberg | Sanitary ware made by automated process - ceramic lavatory bowls slip-cast using horizontal stack moulding |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0569855A1 (en) | 1993-11-18 |
| DE59300617D1 (en) | 1995-10-26 |
| DE4216212C1 (en) | 1993-04-29 |
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