EP0695611B1 - Process and device for making profiled tubular pressed articles from a material in a plastic state such as clay or similar - Google Patents

Process and device for making profiled tubular pressed articles from a material in a plastic state such as clay or similar Download PDF

Info

Publication number
EP0695611B1
EP0695611B1 EP95111648A EP95111648A EP0695611B1 EP 0695611 B1 EP0695611 B1 EP 0695611B1 EP 95111648 A EP95111648 A EP 95111648A EP 95111648 A EP95111648 A EP 95111648A EP 0695611 B1 EP0695611 B1 EP 0695611B1
Authority
EP
European Patent Office
Prior art keywords
press mould
die
rubber bladder
mould
press
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
EP95111648A
Other languages
German (de)
French (fr)
Other versions
EP0695611A2 (en
EP0695611A3 (en
Inventor
Marin Schnorr
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.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0695611A2 publication Critical patent/EP0695611A2/en
Publication of EP0695611A3 publication Critical patent/EP0695611A3/en
Application granted granted Critical
Publication of EP0695611B1 publication Critical patent/EP0695611B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • 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
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0205—Feeding the unshaped material to moulds or apparatus for producing shaped articles supplied to the moulding device in form of a coherent mass of material, e.g. a lump or an already partially preshaped tablet, pastil or the like
    • 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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • B28B21/18—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using expansible or retractable mould or core elements
    • B28B21/20—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using expansible or retractable mould or core elements using inflatable cores, e.g. having a frame inside the inflatable part of the core
    • B28B21/205—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using expansible or retractable mould or core elements using inflatable cores, e.g. having a frame inside the inflatable part of the core having a rigid frame inside the inflatable part of the core
    • 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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
    • B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
    • B28B21/36—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means applying fluid pressure or vacuum to the material
    • B28B21/38—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means applying fluid pressure or vacuum to the material introducing the material wholly or partly under pressure ; Injection-moulding machines
    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
    • B28B3/26—Extrusion dies
    • 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
    • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
    • B28B5/06—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping in moulds on a turntable
    • B28B5/08—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping in moulds on a turntable intermittently rotated

Definitions

  • the invention relates to a method for producing outside and inside profiled, tubular compacts plastic material such as clay or the like under Use of a two-part mold with a porous one Lining.
  • the invention further relates to a device for Execution of the procedure.
  • a process for the production of pipes from stoneware and an appropriate one to perform this procedure Device are known from DE-A-31 00 009.
  • An in Longitudinally divided horizontally into two mold halves The mold has the external shape of the one to be manufactured Rohres defining shape.
  • the Diameter corresponds to the inside diameter of the mold.
  • a mandrel in the form retractable In the opposite direction to the plunger is a mandrel in the form retractable, the diameter of which is the inside diameter of the corresponds to the pipe to be manufactured.
  • DE-A-21 04 632 describes one method and one Device for the production of branch pipes Ceramic material known.
  • the two-part mold first filled a plastic ceramic mass. Subsequently press cores are inserted into each opening of the mold, the ends of which are so complementary to one another have that they are in the retracted position of the Press cores lie against each other to create a continuous Creating cavity.
  • CH-A-453 180 is a press for manufacturing cylindrical tubes or rectangular hollow blocks known.
  • This press uses an immobile one Cylinder core.
  • the pressing pressure is used by a plurality of radially movable press jaws with concentric to Cylinder core produces domed pressing surfaces that way are arranged so that they are in the pressing position form a closed outer cylinder around the cylinder core.
  • the plastic material flows in all pressing devices under the effect of the pressure in the mold cavities.
  • textures arise in the material. Is particularly pronounced this if the material is made of clay, which is pretty is processed dry to allow rapid demoulding To allow compacts. Textures lead to an increased Waste when burning as well as reduced Durability, especially frost resistance, of the burned Parts.
  • the ceramic and clay material flowing over long distances further leads to increased wear of the Mold surfaces, especially at the parting surfaces the shape where excess material is squeezed out.
  • DE-A-34 44 322 is a method of the beginning mentioned type and one for performing the method suitable device known, in which the textures be reduced to a softly prepared clay material is used.
  • the two-part mold is with a provided with porous lining, the favorable properties regarding the demolding of the finished moldings.
  • In Connection with a special addition of the clay material were able to produce very low-texture and therefore very durable moldings be manufactured with finely worked out profiling; however, the moldings are still very much after demolding soft and must therefore be handled with special care become. Deformations are almost inevitable. The moldings cannot be processed immediately.
  • the present invention is based on the object Process for manufacturing from outside and / or inside profiled, partially tubular compacts under Use of a two-part mold with a porous one Specify lining in which the compacts in a very stiff condition can be easily removed from the mold and still have minimal textures.
  • Pressing the material in the mold using a rubber bladder enables even pressurization even at intricately shaped and profiled compacts. Here Any air residues escape first, then the Humidity. At the end of the pressing process, the rigid one can be removed Demold the compact easily.
  • the rubber bladder with a gas e.g. B. Compressed air, pressurized.
  • a gas e.g. B. Compressed air
  • the use of a compressible gas compared to using a Incompressible liquid has the advantage that the pressure subsides only slightly when the compact as a result of Escaping air and water will disappear without constantly must be re-pressed.
  • the object of the present invention is also a Specify device with the help of the invention Procedure can be carried out.
  • the solution is one Device with the features of claim 4.
  • the pressing pressure is according to the invention using a Rubber bubble generated in the left by the mouthpiece Cavity is insertable and can be placed under high pressure.
  • the rubber bladder preferably has easier handling a high pressure clutch, a shut-off valve and in particular a valve with a sealing cone.
  • the shut-off valve makes it possible, after filling the compressed gas into the Rubber bubble to disconnect the source of compressed gas to the next To put rubber bladder under pressure.
  • a preferred embodiment of the invention provides that the mold a circular cylindrical, possibly conical Has shape and of a tubular, if necessary conical sleeve is held together. This makes it easier required relative rotation between the mold and Mouthpiece. Also, the ability to take high pressures very good.
  • the housing of the two mold halves 11, 12 consists of Steel. There is a sealing cone 13 in the front end intended.
  • the interior has a porous lining 14 equipped, the inner surface of a negative of corresponds to manufactured compact.
  • FIG. 2 shows a die 20 of an extrusion press, for example an extruder press for clay.
  • the material is through the mouthpiece 20 according to arrow 9 pushed.
  • the mouthpiece 20 has a Filling tube 21, which is multiple over length and circumference Has openings 22.
  • the tip 24 of the filling tube 21 is open if in the form as in the embodiment 11, 12 to produce compact a closed lid should own.
  • a compressed air nozzle 25 in the tip of the mouthpiece 20 facilitates moving the mouthpiece 20 out of the Mold 11, 12 or the compact.
  • Lighter wipers 26 the separation of the remaining in the filling tube (21) Strand of material.
  • the mouthpiece 20 has a sealing cone 23 which with the Sealing cone 13 of the mold 11, 12 corresponds. At retracted mouthpiece 20, the mold 11, 12 is tight closed so that no material escapes.
  • Fig. 3 shows a perspective view of a rubber bladder 30, attached to a fitting 31, with a High pressure clutch 34 and a shut-off valve 32 equipped is.
  • the valve 31 also has a sealing cone (not visible), which with the sealing cone 13 of the mold 11, 12 corresponds.
  • the rubber bladder 30 can after Pull out the mouthpiece 20 into the filled with material Mold 11, 12 are introduced. Then she is with Inflated with the help of compressed air, causing the compact under a high, uniform pressure is set on all sides. As a result, air components and especially that leave Turning on the clay water used the die 11, 12 through through the porous liner 14.
  • the rubber bladder 30 may have zones 35, 36 of reduced and / or increased extensibility to be equipped To achieve internal profiling of the compacts.
  • Fig. 4 shows a top view of a simple, step-by-step endless revolving carousel-like work platform 2, with whose help carried out the method according to the invention can be.
  • the mouthpiece 20 At the first position I is the mouthpiece 20 with the core tube 21 and the sealing cone 23 to recognize that for filling the closed mold 10, 11, 12 into this retracted and retracted after filling becomes.
  • the shutoff valve 32 is in the third position closed, the high pressure hose 37 from the High pressure clutch 34 removed.
  • the compact inside Die 11, 12 is vented by the high pressure, drained and stiffened.
  • the length of time, as before mentioned in reverse proportion to the amount of Pressing pressure is ensured by the fact that the pressing pressure created over several steps of the work platform 2 remains.
  • the rubber bladder 30 removed, the mold 10, 11, 12 opened and the compact 1 demolded. He can with a suitable removal device 3 a drying car or fed directly to the kiln become.
  • the mold halves 11, 12 are closed and in the first working position I again with material filled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

The production process uses a multiply perforated mouthpiece (20) which, over its length and/or periphery of a material extrusion press, is moved into a closed press mould (11,12) and the press mould is filled with material. The mouthpiece and the press mould are rotated relatively to one another and after withdrawal of the mouthpiece a rubber bladder is fed into the resultant space, being then set under pressure, the pressure being maintained for a predetermined time period. The rubber bladder is set under pressure with a gas, e.g. compressed air. A high pressure of at least 70 bars is maintained for a few minutes. The two-part press mould has a porous cladding and a material extrusion press is provided with a wave mixer and a delivery worm.

Description

Die Erfindung betrifft ein Verfahren zum Herstellen von außen und innen profilierten, rohrförmigen Preßlingen aus plastischem Material wie Ton oder dergleichen unter Verwendung einer zweiteiligen Preßform mit einer porösen Auskleidung.The invention relates to a method for producing outside and inside profiled, tubular compacts plastic material such as clay or the like under Use of a two-part mold with a porous one Lining.

Die Erfindung betrifft ferner eine Vorrichtung zur Durchführung des Verfahrens.The invention further relates to a device for Execution of the procedure.

Ein Verfahren zur Herstellung von Rohren aus Steinzeug und eine zur Durchführung dieses Verfahrens geeignete Vorrichtung sind bekannt aus der DE-A-31 00 009. Eine in Längsrichtung horizontal in zwei Formhälften unterteilte Preßform weist die die Außengestalt des herzustellenden Rohres definierende Form auf. In die Preßform ist von der einen Seite ein Plungerkolben einschiebbar, dessen Durchmesser dem Innendurchmesser der Form entspricht. Gegenläufig zum Plungerkolben ist ein Dorn in die Form einfahrbar, dessen Durchmesser dem Innendurchmesser des herzustellenden Rohres entspricht. Mit dieser Preßvorrichtung lassen sich einfache, gerade Muffenrohre herstellen.A process for the production of pipes from stoneware and an appropriate one to perform this procedure Device are known from DE-A-31 00 009. An in Longitudinally divided horizontally into two mold halves The mold has the external shape of the one to be manufactured Rohres defining shape. In the mold is from a plunger insertable on one side, the Diameter corresponds to the inside diameter of the mold. In the opposite direction to the plunger is a mandrel in the form retractable, the diameter of which is the inside diameter of the corresponds to the pipe to be manufactured. With this Pressing device can be simple, straight socket pipes produce.

Aus der DE-A-21 04 632 sind ein Verfahren und eine Vorrichtung zur Herstellung von Verzweigungsrohren aus Keramikmaterial bekannt. In die zweiteilige Preßform wird zunächst eine plastische Keramikmasse gefüllt. Anschließend werden in jede Öffnung der Preßform Preßkerne eingefahren, deren Enden eine zueinander derart komplementäre Form aufweisen, daß sie in der eingefahrenen Stellung der Preßkerne aneinander anliegen, um so einen durchgehenden Hohlraum zu schaffen. DE-A-21 04 632 describes one method and one Device for the production of branch pipes Ceramic material known. In the two-part mold first filled a plastic ceramic mass. Subsequently press cores are inserted into each opening of the mold, the ends of which are so complementary to one another have that they are in the retracted position of the Press cores lie against each other to create a continuous Creating cavity.

Aus der CH-A-453 180 ist eine Presse zum Herstellen zylindrischer Rohre oder rechteckiger Hohlblocksteine bekannt. Diese Presse verwendet einen unbeweglichen Zylinderkern. Der Preßdruck wird von einer Mehrzahl von radial verschieblichen Preßbacken mit konzentrisch zum Zylinderkern gewölbten Preßflächen erzeugt, die so angeordnet sind, daß sie in der Preßstellung einen geschlossenen Außenzylinder um den Zylinderkern bilden.CH-A-453 180 is a press for manufacturing cylindrical tubes or rectangular hollow blocks known. This press uses an immobile one Cylinder core. The pressing pressure is used by a plurality of radially movable press jaws with concentric to Cylinder core produces domed pressing surfaces that way are arranged so that they are in the pressing position form a closed outer cylinder around the cylinder core.

In allen Preßvorrichtungen fließt das plastische Material unter der Wirkung des Preßdrucks in die Formhohlräume. Dabei entstehen im Material Texturen. Besonders ausgeprägt ist dies, wenn das Material aus Ton besteht, der ziemlich trocken verarbeitet wird, um eine schnelle Entformung der Preßlinge zu ermöglichen. Texturen führen zu einem erhöhten Ausschuß beim Brennen sowie zu einer verringerten Haltbarkeit, insbesondere Frostbeständigkeit, der gebrannten Teile.The plastic material flows in all pressing devices under the effect of the pressure in the mold cavities. Here textures arise in the material. Is particularly pronounced this if the material is made of clay, which is pretty is processed dry to allow rapid demoulding To allow compacts. Textures lead to an increased Waste when burning as well as reduced Durability, especially frost resistance, of the burned Parts.

Gemeinsames Merkmal der zuvor beschriebenen Preßvorrichtungen ist, daß die einfahrenden Kolben und Dorne das plastische Material über lange Strecken fließen lassen, was die Texturbildung begünstigt und insbesondere auch hohe Kräfte erfordert.Common feature of the previously described Pressing devices is that the retracting pistons and mandrels let the plastic material flow over long distances, which favors texture formation and especially high ones Forces required.

Das über große Strecken fließende Keramik- und Tonmaterial führt des weiteren zu einer erhöhten Abnützung der Formoberflächen, und zwar insbesondere an den Trennflächen der Form, wo überschüssiges Material herausgequetscht wird.The ceramic and clay material flowing over long distances further leads to increased wear of the Mold surfaces, especially at the parting surfaces the shape where excess material is squeezed out.

Aus der DE-A-34 44 322 ist ein Verfahren der eingangs genannten Art sowie eine zur Durchführung des Verfahrens geeignete Vorrichtung bekannt, bei dem die Texturen dadurch verringert werden, daß ein weich aufbereitetes Tonmaterial verwendet wird. Die zweiteilige Preßform ist mit einer porösen Auskleidung versehen, die günstige Eigenschaften bezüglich des Entformens der fertigen Formlinge hat. In Verbindung mit einer besonderen Zugabe des Tonmaterials konnten sehr texturarme und damit sehr haltbare Formlinge mit fein ausgearbeiteter Profilierung hergestellt werden; allerdings sind die Formlinge nach dem Entformen noch sehr weich und müssen daher mit besonderer Vorsicht gehandhabt werden. Deformationen sind fast unvermeidlich. Die Formlinge können nicht sofort weiterbearbeitet werden.DE-A-34 44 322 is a method of the beginning mentioned type and one for performing the method suitable device known, in which the textures be reduced to a softly prepared clay material is used. The two-part mold is with a provided with porous lining, the favorable properties regarding the demolding of the finished moldings. In Connection with a special addition of the clay material were able to produce very low-texture and therefore very durable moldings be manufactured with finely worked out profiling; however, the moldings are still very much after demolding soft and must therefore be handled with special care become. Deformations are almost inevitable. The moldings cannot be processed immediately.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Herstellen von außen und/oder innen profilierten, teilweise rohrförmigen Preßlingen unter Verwendung einer zweiteiligen Preßform mit poröser Auskleidung anzugeben, bei dem die Preßlinge in einem sehr steifen Zustand problemlos entformt werden können und trotzdem nur minimale Texturen besitzen.The present invention is based on the object Process for manufacturing from outside and / or inside profiled, partially tubular compacts under Use of a two-part mold with a porous one Specify lining in which the compacts in a very stiff condition can be easily removed from the mold and still have minimal textures.

Diese Aufgabe wird gelöst durch ein Verfahren mit den Merkmalen des Anspruchs 1.This problem is solved by a method with the Features of claim 1.

Damit ergeben sich die Vorteile, daß das plastische Material ohne Handarbeit, sozusagen vollautomatisch, in die Form eingebracht wird, wo es auf kürzestem Weg, d. h. ohne über weite Strecken zu fließen, ohne Bildung von schädlichen Texturen und bei gleichzeitiger Schonung der Formoberflächen, gezielt in die Formhohlräume eingebracht wird. Die Relativbewegung zwischen Form und Mundstück unterstützt die gleichmäßige Verteilung des Materials. Gleichzeitig wird das Material gestrichen, vergleichbar der Bearbeitung auf der Töpferscheibe.This has the advantages that the plastic material without manual work, so to speak fully automatically, into the mold is introduced where it is by the shortest route, d. H. without over to flow long distances without formation of harmful Textures and while protecting the Mold surfaces, specifically introduced into the mold cavities becomes. The relative movement between form and mouthpiece supports the even distribution of the material. At the same time, the material is painted, comparable to that Machining on the potter's wheel.

Das Pressen des Materials in der Form mittels Gummiblase ermöglicht eine gleichmäßige Druckbeaufschlagung auch bei kompliziert geformten und profilierten Preßlingen. Dabei entweichen zunächst etwaige Luftreste, anschließend die Feuchtigkeit. Am Ende des Preßvorgangs läßt sich der steife Preßling problemlos entformen.Pressing the material in the mold using a rubber bladder enables even pressurization even at intricately shaped and profiled compacts. Here Any air residues escape first, then the Humidity. At the end of the pressing process, the rigid one can be removed Demold the compact easily.

Vorteilhafterweise wird die Gummiblase mit einem Gas, z. B. Preßluft, unter Druck gesetzt. Die Verwendung eines kompressiblen Gases hat gegenüber der Verwendung einer inkompressiblen Flüssigkeit den Vorteil, daß der Preßdruck nur wenig nachläßt, wenn der Preßling infolge des Entweichens von Luft und Wasser schwindet, ohne daß ständig nachgepreßt werden muß.Advantageously, the rubber bladder with a gas, e.g. B. Compressed air, pressurized. The use of a compressible gas compared to using a Incompressible liquid has the advantage that the pressure subsides only slightly when the compact as a result of Escaping air and water will disappear without constantly must be re-pressed.

Wie Versuche gezeigt haben, steht die Zeitdauer, für die der Preßdruck aufrechterhalten werden muß, bis der Preßling ausreichend entwässert ist, im umgekehrten Verhältnis zum Preßdruck. Werden zum Entwässern eines bestimmten Preßlings bei ca. 10 bar Preßdruck noch ca. 2 Stunden benötigt, so fällt die Preßzeit bei ca. 50 bar auf nur noch 10 min., bei ca. 70 bar auf nur noch 5 min. usw. Magere Tone benötigen kürzere Preßzeiten als fette.As experiments have shown, the length of time for which the Press pressure must be maintained until the compact is adequately drained, in reverse proportion to Pressure. Used to drain a specific compact at approx. 10 bar press pressure it takes about 2 hours, so the pressing time at approx. 50 bar drops to only 10 min approx. 70 bar to only 5 min. etc. need lean clays shorter pressing times than fat ones.

Aufgabe der vorliegenden Erfindung ist es des weiteren, eine Vorrichtung anzugeben, mit deren Hilfe das erfindungsgemäße Verfahren durchgeführt werden kann. Die Lösung ist eine Vorrichtung mit den Merkmalen des Anspruchs 4.The object of the present invention is also a Specify device with the help of the invention Procedure can be carried out. The solution is one Device with the features of claim 4.

Vorzugsweise sitzt in der Spitze des Mundstücks eine Druckluftdüse. Dies erleichtert das Herausfahren des Mundstücks aus der Preßform bzw. dem Preßling. Demselben Zweck dienen Materialabschneider in der Spitze des Mundstücks.There is preferably one in the tip of the mouthpiece Compressed air nozzle. This makes it easier to pull out the Mouthpiece from the mold or the compact. The same Purpose cutters in the top of the serve Mouthpiece.

Der Preßdruck wird gemäß der Erfindung mit Hilfe einer Gummiblase erzeugt, die in den vom Mundstück hinterlassenen Hohlraum einführbar und unter hohen Druck setzbar ist. Zur leichteren Handhabung besitzt die Gummiblase vorzugsweise eine Hochdruck-Kupplung, ein Absperrventil und insbesondere eine Armatur mit Dichtkonus. Insbesondere das Absperrventil ermöglicht es, nach Einfüllen des Druckgases in die Gummiblase die Preßgasquelle abzutrennen, um die nächste Gummiblase unter Druck zu setzen.The pressing pressure is according to the invention using a Rubber bubble generated in the left by the mouthpiece Cavity is insertable and can be placed under high pressure. For The rubber bladder preferably has easier handling a high pressure clutch, a shut-off valve and in particular a valve with a sealing cone. In particular the shut-off valve makes it possible, after filling the compressed gas into the Rubber bubble to disconnect the source of compressed gas to the next To put rubber bladder under pressure.

Diese zuletzt beschriebene Eigenschaft ermöglicht gemäß einer bevorzugten Ausgestaltung der Erfindung mit den Merkmalen des Anspruchs 9 die Durchführung des erfindungsgemäßen Verfahrens unter Verwendung einer schrittweise endlos umlaufenden Arbeitsplattform. Dank dieser einfachen Vorrichtung ist eine vollautomatische Fertigung der Preßlinge möglich, wobei durch die Zahl der Schritte pro Umlauf die Zahl der Formen und die Schrittdauer die für die Versteifung des Materials benötigte Zeitspanne, abhängig von der möglichen Preßdruckhöhe, sichergestellt wird. Auf jeden Fall wird der Preßling so versteift, daß er nach dem Herausnehmen der entleerten Gummiblase und dem Öffnen der Preßform ohne weiteres aus der Form herausgehoben werden kann, und zwar auch mit einem einfachen Handhabungsautomaten.This property described last enables according to a preferred embodiment of the invention with the Features of claim 9, the implementation of inventive method using a gradually rotating work platform. thanks This simple device is fully automatic Production of the compacts possible, the number of Steps per round the number of shapes and the step duration the time required to stiffen the material, depending on the possible baling pressure level becomes. In any case, the compact is stiffened so that it after removing the empty rubber bladder and the Opening the mold easily lifted out of the mold can be, even with a simple Handling machines.

Eine bevorzugte Ausgestaltung der Erfindung sieht vor, daß die Preßform eine kreiszylindrische, gegebenenfalls konische Form besitzt und von einer rohrförmigen, gegebenenfalls konischen Hülse zusammengehalten wird. Dies erleichtert die erforderliche Relativdrehung zwischen Preßform und Mundstück. Auch ist die Fähigkeit, hohe Drücke aufzunehmen, sehr gut.A preferred embodiment of the invention provides that the mold a circular cylindrical, possibly conical Has shape and of a tubular, if necessary conical sleeve is held together. This makes it easier required relative rotation between the mold and Mouthpiece. Also, the ability to take high pressures very good.

Schließlich besteht die Möglichkeit, die Gummiblase mit Zonen von verringerter und/oder erhöhter Dehnbarkeit sowie mit Längs- und/oder Querrillen auszurüsten, so daß eine Innenprofilierung möglich wird.Finally, there is the option of using the rubber bladder Zones of reduced and / or increased extensibility as well equip with longitudinal and / or transverse grooves, so that a Internal profiling becomes possible.

Anhand der Zeichnung soll die Erfindung in Form von Ausführungsbeispielen näher erläutert werden. Es zeigen

Fig. 1
rein schematisch in perspektivischer Darstellung eine Preßform,
Fig. 2
in perspektivischer Darstellung ein Mundstück einer Materialstrangpresse,
Fig. 3
in perspektivischer Darstellung eine Gummiblase mit Armatur und
Fig. 4
eine Draufsicht auf eine einfache, vollautomatisch arbeitende Vorrichtung zur Herstellung von rohrförmigen Preßlingen.
The invention will be explained in more detail in the form of exemplary embodiments with reference to the drawing. Show it
Fig. 1
a mold in a purely schematic perspective,
Fig. 2
a perspective view of a mouthpiece of an extrusion press,
Fig. 3
in perspective a rubber bladder with armature and
Fig. 4
a plan view of a simple, fully automatic device for the production of tubular compacts.

Fig. 1 zeigt im Inneren einer stabilen rohrförmigen Hülse 10 eine zweiteilige Preßform 11, 12, wobei nur die untere Preßformhälfte 11 ausführlich dargestellt ist. Die obere Preßformhälfte 12 ist nur angedeutet; ihr Aufbau entspricht dem Aufbau der unteren Preßformhälfte 11.1 shows inside a stable tubular sleeve 10 a two-part mold 11, 12, only the lower one Die half 11 is shown in detail. The upper Die half 12 is only hinted at; their structure corresponds the structure of the lower mold half 11.

Das Gehäuse der beiden Preßformhälften 11, 12 besteht aus Stahl. In der vorderen Stirnseite ist ein Dichtkonus 13 vorgesehen. Das Innere ist mit einer porösen Auskleidung 14 ausgerüstet, deren Innenfläche einem Negativ des herzustellenden Preßlings entspricht.The housing of the two mold halves 11, 12 consists of Steel. There is a sealing cone 13 in the front end intended. The interior has a porous lining 14 equipped, the inner surface of a negative of corresponds to manufactured compact.

Fig. 2 zeigt ein Mundstück 20 einer Materialstrangpresse, beispielsweise einer Extruderpresse für Ton. Das Material wird entsprechend dem Pfeil 9 durch das Mundstück 20 geschoben. Am vorderen Ende besitzt das Mundstück 20 ein Füllrohr 21, welches über Länge und Umfang mehrfache Öffnungen 22 besitzt. Auch die Spitze 24 des Füllrohrs 21 ist offen, wenn wie im Ausführungsbeispiel der in der Form 11, 12 herzustellende Preßling einen geschlossenen Deckel besitzen soll.2 shows a die 20 of an extrusion press, for example an extruder press for clay. The material is through the mouthpiece 20 according to arrow 9 pushed. At the front end, the mouthpiece 20 has a Filling tube 21, which is multiple over length and circumference Has openings 22. The tip 24 of the filling tube 21 is open if in the form as in the embodiment 11, 12 to produce compact a closed lid should own.

Eine Preßluftdüse 25 in der Spitze des Mundstücks 20 erleichtert das Herausfahren des Mundstücks 20 aus der Preßform 11, 12 bzw. dem Preßling. Abstreifer 26 erleichtern das Abtrennen des im Füllrohr (21) verbleibenden Materialstrangs.A compressed air nozzle 25 in the tip of the mouthpiece 20 facilitates moving the mouthpiece 20 out of the Mold 11, 12 or the compact. Lighter wipers 26 the separation of the remaining in the filling tube (21) Strand of material.

Das Mundstück 20 besitzt einen Dichtkonus 23, der mit dem Dichtkonus 13 der Preßform 11, 12 korrespondiert. Bei eingefahrenem Mundstück 20 ist die Preßform 11, 12 dicht verschlossen, so daß kein Material austritt.The mouthpiece 20 has a sealing cone 23 which with the Sealing cone 13 of the mold 11, 12 corresponds. At retracted mouthpiece 20, the mold 11, 12 is tight closed so that no material escapes.

Beim Einpressen des Materials in die Form 11, 12 wird zwischen der Form 11, 12 und dem Mundstück 20 eine Relativdrehung erzeugt. Dies wird durch die kreiszylindrische Form der Preßform 10, 11, 12 erleichtert. Dank dieser Relativdrehung wird das aus dem Mundstück 20 austretende Material gleichmäßig im Forminneren verteilt, gelangt so auf kürzestem Wege und ohne die Bildung von schädlichen Texturen an die gewünschten Stellen und wird zu einer homogenen Einheit geformt.When the material is pressed into the mold 11, 12 between the mold 11, 12 and the mouthpiece 20 a Relative rotation generated. This is through the circular cylindrical shape of the mold 10, 11, 12 facilitated. Thanks to this relative rotation, this becomes the mouthpiece 20 emerging material evenly distributed inside the mold, reaches in the shortest possible way and without the formation of harmful textures in the desired places and becomes a homogeneous unit.

Fig. 3 zeigt in perspektivischer Darstellung eine Gummiblase 30, befestigt an einer Armatur 31, die mit einer Hochdruckkupplung 34 und einem Absperrventil 32 ausgerüstet ist. Die Armatur 31 besitzt ebenfalls einen Dichtkonus (nicht sichtbar), der mit dem Dichtkonus 13 der Preßform 11, 12 korrespondiert. Die Gummiblase 30 kann nach dem Herausziehen des Mundstücks 20 in die mit Material gefüllte Preßform 11, 12 eingeführt werden. Anschließend wird sie mit Hilfe von Preßluft aufgeblasen, wodurch der Preßling unter einen hohen, allseits gleichmäßigen Preßdruck gesetzt wird. Dadurch verlassen Luftbestandteile und insbesondere das zum Anmachen des Tons benutzte Wasser die Preßform 11, 12 durch die poröse Auskleidung 14 hindurch.Fig. 3 shows a perspective view of a rubber bladder 30, attached to a fitting 31, with a High pressure clutch 34 and a shut-off valve 32 equipped is. The valve 31 also has a sealing cone (not visible), which with the sealing cone 13 of the mold 11, 12 corresponds. The rubber bladder 30 can after Pull out the mouthpiece 20 into the filled with material Mold 11, 12 are introduced. Then she is with Inflated with the help of compressed air, causing the compact under a high, uniform pressure is set on all sides. As a result, air components and especially that leave Turning on the clay water used the die 11, 12 through through the porous liner 14.

Sobald die Gummiblase 30 unter Druck steht, kann das Absperrventil 32 geschlossen werden.Once the rubber bladder 30 is under pressure, it can Shutoff valve 32 are closed.

Die Gummiblase 30 kann mit Zonen 35, 36 von verringerter und/oder erhöhter Dehnbarkeit ausgerüstet sein, um eine Innenprofilierung der Preßlinge zu erzielen.The rubber bladder 30 may have zones 35, 36 of reduced and / or increased extensibility to be equipped To achieve internal profiling of the compacts.

Fig. 4 zeigt eine Draufsicht auf eine einfache, schrittweise endlos umlaufende karussellartige Arbeitsplattform 2, mit deren Hilfe das erfindungsgemäße Verfahren durchgeführt werden kann. An der ersten Position I ist das Mundstück 20 mit dem Kernrohr 21 und dem Dichtkonus 23 zu erkennen, das zum Befüllen der geschlossenen Preßform 10, 11, 12 in diese eingefahren und nach dem Befüllen wieder herausgefahren wird.Fig. 4 shows a top view of a simple, step-by-step endless revolving carousel-like work platform 2, with whose help carried out the method according to the invention can be. At the first position I is the mouthpiece 20 with the core tube 21 and the sealing cone 23 to recognize that for filling the closed mold 10, 11, 12 into this retracted and retracted after filling becomes.

In der zweiten Position II wurde die Gummiblase in die Preßform 10, 11, 12 eingefahren, bis der Dichtkonus 33 dicht anliegt. Auf die Hochdruckkupplung 34 ist ein mit einer Preßluftquelle verbundener Hochdruckschlauch 37 aufgesteckt. Das Absperrventil 32 ist geöffnet. Das Preßgas strömt in die Gummiblase 30.In the second position II the rubber bladder was in the Press mold 10, 11, 12 retracted until the sealing cone 33 is tight is present. On the high pressure clutch 34 is one with a Compressed air source connected high pressure hose 37 attached. The shut-off valve 32 is open. The pressurized gas flows into the Rubber bladder 30.

An der dritten Position ist das Absperrventil 32 geschlossen, der Hochdruckschlauch 37 von der Hochdruckkupplung 34 abgezogen. Der Preßling im Inneren der Preßform 11, 12 wird durch den hohen Druck entlüftet, entwässert und versteift. Die Zeitdauer, die wie schon erwähnt im umgekehrten Verhältnis steht zu der Höhe des Preßdrucks, wird dadurch gewährleistet, daß der Preßdruck über mehrere Schritte der Arbeitsplattform 2 angelegt bleibt.The shutoff valve 32 is in the third position closed, the high pressure hose 37 from the High pressure clutch 34 removed. The compact inside Die 11, 12 is vented by the high pressure, drained and stiffened. The length of time, as before mentioned in reverse proportion to the amount of Pressing pressure is ensured by the fact that the pressing pressure created over several steps of the work platform 2 remains.

An der vierten Position IV wurde die Gummiblase 30 entnommen, die Preßform 10, 11, 12 geöffnet und der Preßling 1 entformt. Er kann mit einer geeigneten Abfördereinrichtung 3 einem Trockenwagen oder direkt dem Brennofen zugeführt werden.At the fourth position IV, the rubber bladder 30 removed, the mold 10, 11, 12 opened and the compact 1 demolded. He can with a suitable removal device 3 a drying car or fed directly to the kiln become.

Nach dem Putzen werden die Formhälften 11, 12 geschlossen und in der ersten Arbeitsposition I wieder mit Material gefüllt.After cleaning, the mold halves 11, 12 are closed and in the first working position I again with material filled.

Claims (10)

  1. Process for producing externally and, optionally, internally profiled, partly tubular pressed articles (1) from a plastic material such as clay using a single-split press mould (11, 12) with a porous lining (14), characterised in that a die (20), which is repeatedly perforated over its length and/or circumference, of a material extruder is moved into the closed press mould (11, 12), that the press mould (11, 12) is filled with material, that the die (20) and press mould (11, 12) are rotated relative to one another, that a rubber bladder (30) is moved into the cavity resulting following the withdrawal of the die (20) and then pressurized, and that the pressing pressure is maintained for a predetermined period.
  2. Process according to claim 1, characterised in that the rubber bladder (30) is pressurized by a gas, e.g. compressed air.
  3. Process according to claim 2, characterised in that a high pressure of at least 70 bar is maintained for several minutes.
  4. Device for carrying out the process according to any one of claims 1 to 3 with a single-split press mould (11, 12) with a porous lining (14), characterised by the features:
    a material extruder, a shaft mixer with a feed screw or similar is provided
    with a die (20),
    which is repeatedly perforated over its circumference and/or length,
    and has an orifice at the tip (24),
    a rubber bladder (30) is provided,
    which can be introduced into the cavity left by the die (20)
    and can be subjected to high pressure.
  5. Device according to claim 4, characterised by the feature:
    the press mould (11, 12) has a circular cylindrical or conical shape,
    a tubular shell (10) holds the press mould halves (11, 12) together,
    a rotating device produces a relative movement between the die (20) and the press mould (10, 11, 12).
  6. Device according to claim 4 or 5, characterised by the feature:
    a compressed-air nozzle (25) and/or a material separator (26) is/are seated in the tip (24) of the die (20).
  7. Device according to any one of claims 4 to 6, characterised by the features:
    the rubber bladder (30) has
    a high-pressure coupling (34),
    a shut-off valve (32) and
    a mounting (31) with a sealing cone (33).
  8. Device according to any one of claims 4 to 7, characterised by the feature:
    the rubber bladder (30) has zones and/or profiles (35, 36) with a reduced and/or increased stretching ability.
  9. Device according to any one of claims 4 to 8, characterised by the features:
    a working platform (2), which rotates continuously step-by-step, is provided,
    the material extruder or the die (20) thereof is associated with a first position (I) of the working platform (2),
    a compressed-gas line (35) for inflating the mounted rubber bladder (30) is associated with a second position (II),
    an appliance for maintaining the pressing pressure for a certain period is associated with a third position (III),
    appliances for depressurizing the rubber bladder (30), for opening the press mould (10, 11, 12) and for removing the finished pressed article (1) from the mould are associated with a fourth position (IV),
    appliances for cleaning the mould halves (11, 12) and for closing the press mould (10, 11, 12) are associated with a fifth position (V).
  10. Device according to claim 9, characterised by the feature:
    a take-off conveyor (3) is associated with the fourth position (IV) of the working platform (2).
EP95111648A 1994-08-04 1995-07-25 Process and device for making profiled tubular pressed articles from a material in a plastic state such as clay or similar Expired - Lifetime EP0695611B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4427588 1994-08-04
DE4427588A DE4427588C1 (en) 1994-08-04 1994-08-04 Production process for profiled, tubular basic blanks from clay and similar

Publications (3)

Publication Number Publication Date
EP0695611A2 EP0695611A2 (en) 1996-02-07
EP0695611A3 EP0695611A3 (en) 1997-11-19
EP0695611B1 true EP0695611B1 (en) 2000-03-22

Family

ID=6524909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95111648A Expired - Lifetime EP0695611B1 (en) 1994-08-04 1995-07-25 Process and device for making profiled tubular pressed articles from a material in a plastic state such as clay or similar

Country Status (4)

Country Link
EP (1) EP0695611B1 (en)
AT (1) ATE190898T1 (en)
DE (2) DE4427588C1 (en)
ES (1) ES2144547T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005007909A1 (en) * 2005-02-08 2006-08-10 Rennebeck, Klaus, Dr. Manufacturing device for molded ceramic parts has at least one part of the mold made so that fluid can enter and leave through several apertures

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004016609B3 (en) * 2004-04-03 2005-03-03 Knoch, Kern & Co. Supply unit for fluids and solids in a rotating mould comprises a rod shaped member connected to a supply line at one end and a sleeve with holes in it which slides relative to the member
CN112895126B (en) * 2021-01-16 2022-11-22 韶关挖掘机制造厂有限公司 Single-horizontal-shaft stirring main machine directly driven by speed reduction motor
CN115139392B (en) * 2022-07-05 2023-12-08 江西科技学院 Preparation facilities of carousel formula luminous concrete brick that permeates water

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL44908C (en) * 1900-01-01
FR491298A (en) * 1918-08-19 1919-05-28 Emile Bouvier Manufacturing process, in construction materials, of beams and molded slabs provided with longitudinal channels
US1858956A (en) * 1925-11-05 1932-05-17 Hepperle Heinrich Molding machine
GB313325A (en) * 1926-07-02 1929-06-13 Arthur Oswin Austin Method and apparatus for casting ceramic pieces
DK113762B (en) * 1964-02-26 1969-04-21 G Marchioli Apparatus for making pipe bends with straight end portions, one of which is formed as a sleeve, and with a curved intermediate portion.
DE1584401A1 (en) * 1966-04-13 1970-01-22 Eckold Gerd Juergen Press for the production of tubular blanks or hollow blocks, wall elements or the like from lime, cement or other bonded raw materials
NL7001893A (en) * 1970-02-10 1971-08-12
CH588340A5 (en) * 1975-01-09 1977-05-31 Tarida Anstalt & Cabrera Ansta
DE3100009A1 (en) * 1981-01-02 1982-07-22 Rieter-Werke Dipl.-Ing. Walter Händle GmbH, 7750 Konstanz Method and apparatus for producing stoneware pipes
DE3444322A1 (en) * 1984-12-05 1986-06-05 Marin 6729 Hatzenbühl Schnorr Process and device for pressing profiled tubular bodies from plastics material
DE3903640A1 (en) * 1988-02-09 1989-08-17 N Proizv Ob Energostroiprom Process and installation for producing hollow bodies from building material mixtures, preferably concrete mixtures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005007909A1 (en) * 2005-02-08 2006-08-10 Rennebeck, Klaus, Dr. Manufacturing device for molded ceramic parts has at least one part of the mold made so that fluid can enter and leave through several apertures

Also Published As

Publication number Publication date
ES2144547T3 (en) 2000-06-16
DE4427588C1 (en) 1995-09-07
EP0695611A2 (en) 1996-02-07
EP0695611A3 (en) 1997-11-19
DE59508031D1 (en) 2000-04-27
ATE190898T1 (en) 2000-04-15

Similar Documents

Publication Publication Date Title
EP0393315A2 (en) Method for injection moulding fluid-filled plastic articles and apparatus for carrying out the method
DE1529836B1 (en)
DE3321285C2 (en) Method for producing a profile from dry powder material and device for this
DE2939761C2 (en)
DE1268364B (en) Process for producing a hollow, collapsible, relatively thin-walled plastic container and device for carrying out this process
EP0695611B1 (en) Process and device for making profiled tubular pressed articles from a material in a plastic state such as clay or similar
DE2521308A1 (en) PROCESS, DEVICE AND CORE FOR THE PRODUCTION OF A PLASTIC HOLLOW BODY
DE2557416A1 (en) METHOD AND APPARATUS FOR MANUFACTURING A PIPE CONNECTOR WITH RADIAL EXPANSION
DE4038077C2 (en)
CH542033A (en) Method and machine for the production of fiber cement pipes
DE2362444A1 (en) Smooth bore externally ribbed tube continuously extruded - using smooth mandrel extending from extruder into moving belt mould
DE2549721A1 (en) Concrete pipe casting segmented mould - has stepped collar and base ring replaced by wooden board for drying
DE3003120A1 (en) Internally stiffened hollow plastic mouldings - heated blades press together opposite walls of tubing before blow moulding
DE1102626B (en) Method and device for the production of hollow bodies from asbestos cement or the like formable material with outwardly projecting, massive wall parts
DE2064929A1 (en) Method and device for the manufacture of hollow bodies from thermoplastic material excretion from 2002914
DE958367C (en) Method and device for the final molding of preforms made of plastic material
DE3444322C2 (en)
DE2418638C3 (en) Method and device for the manufacture of unilaterally closed hollow bodies made of thermoplastic material
DE19851076A1 (en) Molding an additional part such as a connecting strap, supporting angle or cable clip onto a technical component, by compressing part of a blow molding during the blowing stage
DE19538375C1 (en) Blow moulding tool
DE1459330B1 (en) Method and device for pressing clay pipes
DE3920203C1 (en) Reinforced extrusion pressed thermoplastic profile prepn. - by feeding melt from plasticising unit to tubular moulding unit carrying reinforcement
DE1679987C (en) Device for the production of hollow bodies, such as bottles or the like., Proceed according to the blow molding
DE886564C (en) Method and device for the production of shipping containers from fiber material
DE3100009A1 (en) Method and apparatus for producing stoneware pipes

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IE IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IE IT LI NL SE

17P Request for examination filed

Effective date: 19980303

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19990716

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IE IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000322

REF Corresponds to:

Ref document number: 190898

Country of ref document: AT

Date of ref document: 20000415

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59508031

Country of ref document: DE

Date of ref document: 20000427

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: PATENTANWAELTE SCHAAD, BALASS, MENZL & PARTNER AG

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2144547

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20000605

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010704

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010723

Year of fee payment: 7

Ref country code: NL

Payment date: 20010723

Year of fee payment: 7

Ref country code: CH

Payment date: 20010723

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20010724

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20010727

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20010730

Year of fee payment: 7

Ref country code: AT

Payment date: 20010730

Year of fee payment: 7

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020725

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020725

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020725

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020726

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020726

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020731

BERE Be: lapsed

Owner name: *SCHNORR MARIN

Effective date: 20020731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030201

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020725

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20030201

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030811

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050719

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050725

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140717

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59508031

Country of ref document: DE