EP1772240B1 - Verfahren zur Herstellung von Korkscheiben und Maschine zur Herstellung von Korkscheiben nach diesem Verfahren - Google Patents

Verfahren zur Herstellung von Korkscheiben und Maschine zur Herstellung von Korkscheiben nach diesem Verfahren Download PDF

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Publication number
EP1772240B1
EP1772240B1 EP06020984A EP06020984A EP1772240B1 EP 1772240 B1 EP1772240 B1 EP 1772240B1 EP 06020984 A EP06020984 A EP 06020984A EP 06020984 A EP06020984 A EP 06020984A EP 1772240 B1 EP1772240 B1 EP 1772240B1
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Prior art keywords
cork
discs
cylinders
cutting
zone
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French (fr)
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EP1772240A1 (de
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David Navarro Salomo
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
    • B27J5/00—Mechanical working of cork

Definitions

  • the object of the present invention consists of a PRODUCTION PROCESS OF CORK DISCS AND MACHINE FOR THE PRODUCTION OF CORK DISCS ACCORDING TO THE NEW PROCESS, of the type used to make corks like those used in glass or ceramic bottles, designed to contain products such as wine, cava and others.
  • cork discs for the manufacturing of corks made of the same material can be considered to be divided into six basic stages: preparation of the cork plaques, cutting of the plaques into strips, adaptation of the same, lamination, die-casting to obtain cork discs and, finally, sifting and sorting of the discs.
  • the preparation stage of the cork plaques consists of three phases.
  • the unloading of the cork plaques which come from the cork oak plantations, is carried out, in bundles or on pallets; in this initial state, the cork is compact, dry and hard.
  • the cork undergoes a wash in water at a very high temperature with the addition of certain chemical products; the objective of this wash is to eliminate unwanted parasites and microorganisms while managing to give volume and flexibility to the cork.
  • the cork is left to steep in a period of storage during which the volume and flexibility of the same increase still more as a result of the action in the time of the washing phase and of the chemical products contained in the same.
  • the aim of the stage in which the cork plaques are cut into strips is to generate cork strips which are of a width which corresponds to that of the two rows of discs placed in a zigzag, since that is how the cork discs of these strips will be die-cast at a later production stage.
  • the adaptation stage of the cork strips consists of the elimination of the internal layer of the same, commonly denominated belly, that is to say, of the deep layer and which was initially that which was in contact with the tree trunk; the aim of this action is that of smoothening the cork strip so as to eliminate all manner of protuberances and wrinkles normal in these surfaces.
  • the stage which involves laminating the cork strips consists of converting the strips produced from the previous stage into sheets of the same thickness which the finished cork discs will finally have to be (in the order of 6 mm), starting with the deepest layers of the cork strip and finishing with the outermost (which becomes decomposed due to the fact that it is of very bad quality, since it is the one which was exposed to the elements in the tree). This last part is commonly denominated firewood.
  • the purpose of the stage in which the sheets of cork are die-cast is to obtain completed cork discs and the appropriate diameter for the subsequent production of the corks.
  • the sifting and sorting stage in the first instance, in the sifting, the incomplete or faulty discs are eliminated and, secondly, in the sorting, the latter are separated according to their qualities, taking into account the fact that those which come from the deepest layers of the cork (that is to say, those which were closer to the tree trunk) are the ones which are of the best quality, whereas those which come from the outermost layers of the tree are the ones of least quality.
  • the first reason is that the amount of raw material wasted, in the form of remnants of cork or shavings, is very large (in the order of 75 % of the total); firstly, because the saws which cut the cork plaques into strips extract the inner layer and then laminate them, turning a section, 2mm per cut corresponding to the thickness of the saw disc, into shavings; secondly, because in the adaptation stage one can discard the total of the inner side of the cork strip which (depending on the operator's ability) can be of a thickness which is much greater than that desired in some points, whereas in others it is so light that the surface becomes marked with the colour of the stomach (in those cases the affected cork disc has a commercial value which is much inferior to the rest); thirdly, because the outer or last side are also discarded (once all the sheets have been cut), as this side can have in some points thicknesses which are much greater than that of a pulley wheel (approximately 6 mm); finally, because the outer interstitial spaces of the sheets of cork are not taken full
  • the novel process has two fundamental differences with regards to the traditional process; these are differences which mean a significant saving in the operating costs: the first and principal one, which by itself more than justifies the implantation of the same in any factory, entails the new process being designed in such a way that the amount of raw material wasted is enormously reduced with regards to the traditional method.
  • the second difference which reduces the cost entails the new process allowing it to be carried out automatically in a single machine which, logically, requires the attention of a single operator without need for any specialisation.
  • the new production process of cork discs for corks made of the same material can be considered to be divided into three basic stages:
  • the preparation stage of the cork plaques is identical to that of the traditional process previously described and therefore does not require further comment, this stage can even be omitted if the cork is already served in optimum conditions for its transformation.
  • the objective of the stage which involves the die-casting of the cork plaques is to obtain cork cylinders which are of the same thickness as the plaques and the diameter which the completed discs must have. These dies will be arranged by the herringbone method, being grouped together as tightly as possible in order to limit the interstitial spaces.
  • the cork cylinders are cut into horizontal sections to obtain completed discs.
  • This third stage has at least three phases:
  • the novel process totally eliminates the multiple manual cuts, the interstitial spaces not taken full advantage of and the necessity for final sorting of the product, characteristic of the traditional production process.
  • the novel machine is made up of a bedplate or chassis, equipped with a circuit on which move a plurality of transport supports, in which four differentiated zones can be perceived:
  • the loading zone is made up of a mobile table in which the cork plaque is inserted via push-rods to centre it against one of its corners.
  • a treader is set up which holds and flattens the cork plaque.
  • the cylinder die-casting zone consists of a bridge of hollow dies which act as gouges, at the bottom of which the mobile table is found with the loaded cork table.
  • the dies are simultaneously moved by a servomotor which makes them turn to carry out the cutting of the cork cylinders and which is equipped to change its turning velocity.
  • extractors are set up which attack the cork cylinders lodged at that moment inside the dies, making them exit and inserting them in a transport support of the circuit.
  • the cutting zone is made up of a plurality of stations, each one of which consists of:
  • the first in forward direction of the circuit effects a cut of approximately 2mm with which the side of the cork cylinder corresponding to the surface of the plaque in contact with the tree trunk (commonly belly) is taken out, and once it has been sectioned the belly disc is evacuated through the associated evacuation channel towards a residue deposit.
  • the following cutting stations section discs of generally 6mm, and there exist as many active stations as there are discs that can be extracted from the cork cylinder because of its thickness, which is directly connected to the thickness of the initial cork plaque.
  • the sectioned discs in each station are evacuated through the evacuation channel associated with the same, said channels being independent, and for this reason discs from different stations will not be mixed, becoming sorted according to the final deposit that they are destined for.
  • the firewood expulsion zone is found mounted at the end of the circuit and the rest of the remaining cork cylinder corresponding to the outer layer of the tree (firewood) is extracted from the mobile supports via extractors which make them fall on the final evacuation channel.
  • the new process for the production of cork discs for corks made of the same material consists of three stages:
  • the cork plaques which come from the cork oak plantations are unloaded (4); in this initial state, the cork is compact, dry and hard.
  • the cork undergoes a wash in water, at a temperature of 80°, for an hour (5) and, finally, the cork plaques are left to steep for a period of 48 hours (6), after which they are ready to enter into the second stage.
  • the cork plaques (2) which are an average of approximately 800mm long and 600mm wide, are die-cast.
  • one proceeds to die-cast the cork plaque breadth wise to extract 33 cork cylinders, 35mm in diameter, from every die-casting operation (7) and afterwards to position these 33 cylinders in a support which keeps them grouped and ordered (8).
  • dies will be organized by the herringbone method according to a two row mould, one with 16 columns and another with 17, with 33 dies being carried out per operation.
  • the novel MACHINE FOR THE PRODUCTION OF CORK DISCS consists of a bedplate (12) equipped with a circuit on which a plurality of transport supports move (14), in which are perceived:
  • the movement of the transport supports (14) right along the circuit is carried out through fixers and pneumatic cylinders (not illustrated) in the non-cutting zones and via ball screws (not illustrated) in the cutting zones.

Claims (8)

  1. Verfahren zur Herstellung von Korkscheiben, von der Art, das für die nachfolgende Herstellung von Korken aus Korkplatten verwendet wird, die in Bündeln oder Paletten geliefert werden, im Wesentlichen bestehend aus drei Stufen:
    - die Vorbereitung von Korkplatten (1), die von den Korkeichenplantagen kommen;
    - der Druckguss der vorbereiteten Platten zur Gewinnung von Korkenzylindern (2) mit der Dicke der Platten, indem aus diesen mittels einem Schneidearbeitsschritt eine Vielzahl von Korkenzylindern extrahiert werden, deren Durchmesser gleich dem der zu produzierenden Scheiben ist, wobei der besagte Schneidevorgang so durchgeführt wird, dass der Druckguss der Korkplatten in einer Reihe oder in mehreren Reihen ausgeführt wird, die entsprechend der Fischgrätenmethode angeordnet sind, und indem die Schneidezylinder auf einer Transportauflage (14) platziert werden;
    - das Schneiden der Korkzylinder auf der Transportauflage (14) in horizontale Querschnitte, um fertige Scheiben herzustellen, wobei die Zylinder gruppiert und geordnet verbleiben und mehreren Schnitten in horizontale Querschnitte unterliegen, um fertige Scheiben zu erhalten.
  2. Verfahren zur Herstellung von Korkscheiben nach den vorherigen Ansprüchen, dadurch gekennzeichnet, dass die Stufe, die das Schneiden der Zylinder zur Gewinnung von Scheiben (3) beinhaltet, in drei Phasen unterteilt ist:
    - Ein erster oberflächlicher Schnitt von ungefähr 2 mm in die Seite der Zylinder, die mit der Oberfläche der Platte in Kontakt mit dem Baumstamm übereinstimmt, wobei anschließend die geschnittenen Scheiben an ein Rückstandslager (9) abgeführt werden.
    - Ein Satz nachfolgender Schnitte des restlichen Körpers der Zylinder in Segmente mit der Dicke der Korkscheiben, wobei die Scheiben mit einem streng genommenen Handelswert konfiguriert und die geschnittenen Teile an unabhängige Lager pro Schnitt (10) abgeführt werden.
    - Abführung des letzten Rests des Körpers der Korkenzylinder an ein Rückstandslager (11), der der Schicht entspricht, die am äußersten liegt und die schlechteste Qualität besitzt.
  3. MASCHINE ZUR HERSTELLUNG VON KORKSCHEIBEN, die aus einer Grundplatte (12) besteht, auf der sich eine Vielzahl von Transportauflagen (14) in einem geschlossenen Kreislauf bewegen, und die Folgendes umfasst:
    - einen Ladebereich (15) für die Korkplatten;
    - einen Zylinder-Druckguss-Bereich (19), um durch einen Schneidearbeitsgang eine Vielzahl von Korkenzylindern zu erhalten, deren Durchmesser gleich dem der zu produzierenden Scheiben ist, wobei der besagte Schneidevorgang so durchgeführt wird, dass der Druckguss der Korkplatten in einer Reihe oder in mehreren Reihen ausgeführt wird, die entsprechend der Fischgrätenmethode angeordnet sind, und indem die Schneidezylinder auf einer Transportauflage (14) platziert werden;
    - einen Bereich, der eine Anzahl Schneidestationen umfasst, in denen die Zylinder in horizontale Querschnitte geschnitten werden;
    - einen Bereich (31) für das Ausscheiden der endgültigen Rückstände der Korkzylinder,
    wobei sich die Transportauflagen (14) bei Betrieb über den besagten Zylinder-Druckguss-Bereich (19), den besagten Bereich mit Schneidestationen und den besagten Bereich für die Ausscheidung der endgültigen Rückstände bewegen.
  4. MASCHINE ZUR HERSTELLUNG VON KORKSCHEIBEN nach Anspruch 3, dadurch gekennzeichnet, dass der Ladebereich (15) aus einem beweglichen Tisch (16), Schubstangen (17) und einem Treter (18) besteht, der die druckzugießende Korkplatte stützt und bewegungsunfähig macht.
  5. MASCHINE ZUR HERSTELLUNG VON KORKSCHEIBEN nach Anspruch 4, dadurch gekennzeichnet, dass der Zylinder-Druckguss-Bereich (19), der aus einer Werkzeugbrücke mit zwei oder mehreren hohlen Pressformen (20) besteht, die als Hohlmeißel dienen, die simultan von einem Servomotor (21) bewegt werden, was die Änderung der Drehzahl ermöglicht.
  6. MASCHINE ZUR HERSTELLUNG VON KORKSCHEIBEN nach Anspruch 5, dadurch gekennzeichnet, dass ein beweglicher Tisch betriebsbereit unter der Werkzeugbrücke (20) mit den Korkplatten platziert ist (16), und dass auf derselben und in Verbindung mit den Pressformen Abziehvorrichtungen angeordnet sind (34), die die Korkenzylinder (22) von den Pressformen, wo sie unmittelbar nach der Durchführung des Druckgießens hängen bleiben, zu einer Transportauflage (14) bewegen.
  7. MASCHINE ZUR HERSTELLUNG VON KORKSCHEIBEN nach Anspruch 6, dadurch gekennzeichnet, dass der Schneidebereich aus zwei oder mehreren Stationen (23, 24, 25...30) besteht, von der jede einzelne mit einer horizontal positionierten Trennscheibe (26), deren Höhe und Drehzahl angepasst werden kann, einem Schubelement (27), das die Korkzylinder (22) gegen die Schneideebene drückt, und einem Ausscheidekanal (28) für die geschnittenen Scheiben (29) ausgestattet ist.
  8. MASCHINE ZUR HERSTELLUNG VON KORKSCHEIBEN nach Anspruch 7, dadurch gekennzeichnet, dass der Bereich für den Ausstoß der Rückstände (31) am Ende des Kreislaufes angeordnet ist, und dass diese einen Satz von Abziehvorrichtungen umfasst, die die Rückstände der geschnittenen Korkzylinder aus der entsprechenden Transportauflage (14) nehmen und zu einem Ausscheidekanal für die Rückstände (32) leiten.
EP06020984A 2005-10-10 2006-10-06 Verfahren zur Herstellung von Korkscheiben und Maschine zur Herstellung von Korkscheiben nach diesem Verfahren Not-in-force EP1772240B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200502463A ES2272188B1 (es) 2005-10-10 2005-10-10 Proceso de fabricacion de discos de corcho y maquina para la fabricacion de discos de corcho segun el nuevo proceso.

Publications (2)

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EP1772240A1 EP1772240A1 (de) 2007-04-11
EP1772240B1 true EP1772240B1 (de) 2008-08-06

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EP06020984A Not-in-force EP1772240B1 (de) 2005-10-10 2006-10-06 Verfahren zur Herstellung von Korkscheiben und Maschine zur Herstellung von Korkscheiben nach diesem Verfahren

Country Status (5)

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EP (1) EP1772240B1 (de)
AT (1) ATE403528T1 (de)
DE (1) DE602006002084D1 (de)
ES (3) ES2272188B1 (de)
PT (1) PT1772240E (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2272188B1 (es) * 2005-10-10 2008-03-16 David Navarro Salamo Proceso de fabricacion de discos de corcho y maquina para la fabricacion de discos de corcho segun el nuevo proceso.
IT1395893B1 (it) 2009-09-18 2012-10-26 Sugherificio Colla E Fresu S R L Turacciolo e suo metodo di realizzazione.
FR3006226B1 (fr) * 2013-05-28 2015-07-17 Bougest Procede et dispositif de production optimisee de rondelles de liege naturel pour la fabrication de bouchons
ES2535578B1 (es) * 2013-11-11 2016-02-16 Trefinos, S.L. Máquina para la fabricación de discos de corcho
ES2548298B1 (es) * 2014-04-14 2016-07-19 Trefinos, S.L. Máquina para fabricación de discos de corcho, perfeccionada
ES2945803B2 (es) * 2023-06-13 2023-11-24 Ruiz Ricardo Soto Procedimiento de fabricacion de tubos de corcho aglomerado de un solo canal

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1535466A (en) * 1921-03-19 1925-04-28 Crown Cork And Seal Company Of Machine for producing disks from cork or cork composition
FR1021546A (fr) * 1950-07-06 1953-02-19 Joints Manuf Generale Machine automatique pour le découpage de disques, rondelles et autres petits articles du même genre
FR2576826B1 (fr) * 1985-02-05 1988-08-26 Barrere Francis Procede de fabrication de bouchons en liege naturel
FR2759014B1 (fr) * 1997-02-05 1999-04-02 Antoine Bernard Nunes Procede de fabrication de bouchons de liege et bouchons fabriques par un tel procede
IT1308769B1 (it) * 1999-06-30 2002-01-10 Italco S R L Macchina per la fabbricazione di rondelle di sughero, particolarmenteper turaccioli compositi.
ES2182690B1 (es) * 2001-04-04 2004-06-16 Ambe Automatismes, S.C. Maquina de corte de barras de corcho aglomerado destinadas a la fabricacion de tapones de corcho.
PT1393869E (pt) * 2002-08-30 2007-02-28 Jose Luis Godoy Varo Rolha multicamada em cortiça natural e processo para o seu fabrico
ES2224895B1 (es) * 2004-09-17 2005-12-01 Jose Luis Godoy Varo Dispositivo de sujecion y avance para placas, aplicable a un aparato de tratamiento de placas de corcho natural.
ES2272188B1 (es) * 2005-10-10 2008-03-16 David Navarro Salamo Proceso de fabricacion de discos de corcho y maquina para la fabricacion de discos de corcho segun el nuevo proceso.

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Publication number Publication date
PT1772240E (pt) 2008-11-18
ATE403528T1 (de) 2008-08-15
ES2272188A1 (es) 2007-04-16
ES2320081B1 (es) 2010-02-12
ES2272188B1 (es) 2008-03-16
ES2310879T3 (es) 2009-01-16
EP1772240A1 (de) 2007-04-11
DE602006002084D1 (de) 2008-09-18
ES2320081A1 (es) 2009-05-18

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