EP2808139B1 - Verfahren und Vorrichtung für die optimierte Herstellung von Naturkorkscheiben für die Herstellung von Flaschenkorken - Google Patents

Verfahren und Vorrichtung für die optimierte Herstellung von Naturkorkscheiben für die Herstellung von Flaschenkorken Download PDF

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Publication number
EP2808139B1
EP2808139B1 EP14305791.7A EP14305791A EP2808139B1 EP 2808139 B1 EP2808139 B1 EP 2808139B1 EP 14305791 A EP14305791 A EP 14305791A EP 2808139 B1 EP2808139 B1 EP 2808139B1
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EP
European Patent Office
Prior art keywords
cutting
blanks
station
slices
optimised
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Not-in-force
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EP14305791.7A
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English (en)
French (fr)
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EP2808139A1 (de
Inventor
Gérard BOURRASSE
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Bougest
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Bougest
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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 present invention relates to an optimized production process of natural cork washers for the manufacture of corks according to the preamble of claim 1. Such a method is known from the document EP1772240 A1 .
  • the invention also covers an associated device according to the preamble of claim 5.
  • Such a device is known from the document EP1772240 A1 .
  • Natural cork is harvested from cork oak and harvesters remove cork boards of varying sizes. It is necessary to wait nearly 50 years before being able to have boards of good quality, usable in the cork. We therefore have a plank with a crust which is the outer face, a belly on the inner side, corresponding to the side facing the trunk and the crumb, which is the noble part of the plank, between the crust and the belly.
  • the exceptional properties of cork, especially of the crumb make it possible to use it for many applications including the one more particularly concerned with the present invention namely corking.
  • plugs are tubes from cork strips cut in the cork boards, the casing being made from the edge of the strip, only in the crumb.
  • corks are also other methods of making corks, especially that used for the production of sparkling wine corks such as champagne, effervescent alcoholic beverages such as cider or for soft drinks such as sparkling waters.
  • plugs are so-called technical caps, that is to say made in several parts, glued together by means of food glues, namely a head and washers.
  • the number of washers is related to the desired length of stopper and the thickness of the washers available.
  • cork is linked to a very long renewal process, spread over several years, so that cork cultivation is increasingly abandoned in favor of more profitable agricultural production.
  • a board can have very variable thicknesses and dimensions length / width also very different and, in any case, no board is identical to another, including included in first choice cork.
  • the number of washers per cm 2 of board is almost constant and can not be improved with the method currently used.
  • the cork planks are cut into strips of a width greater than the diameter of the washers to be made, which generates a loss of about 3 mm of cork for each cut of each strip. It takes a first operator to complete this step.
  • Casing is done from the crust to the mother, ie radially from the outside to the inside, even if the crust and the mother have been removed.
  • the washers are thus currently manufactured blind, that is to say that the washers are cased whatever the thickness, the washers thus cased are subsequently treated in particular by undergoing the boiling, grinding and sorting so that, in the end, 30 to 35% are rejected and therefore 30 to 35% of material are lost in addition to the treatments. It would of course be preferable to proceed with an elimination prior to these treatments.
  • the method according to the present invention aims to address this problem of optimizing the production of cork washers for the manufacture of corks, whatever the applications.
  • the goal is to optimize on the one hand the surface of the available board, that is to say to draw the largest number of washers per unit area and optimize the other side the thickness of said board . This allows to retain only the washers having a value by rejecting cork having little value.
  • the method consists in its generality to cut blanks directly from a blank board, perpendicular to its surface, this optimizing the cut volume.
  • the purpose of this process is also to speed up production rates.
  • the associated device aims to respond to the implementation of the method which generates very important problems related to cutting blanks through the entire thickness of the blank board.
  • This method makes it possible to eliminate only the mother in an optimized way because the eliminated mother is that which is specific to each blank.
  • the length of each blank is taken into account for the choice of cutting and the optimization of the number of washers.
  • FIG. 2 there is shown a board 10, with at least two tools (22-1, 22-2 .... 22-n) in this case two tools 22-1 and 22-2 cutting, that is to say say punches in the form of a circular section tube provided with a refined leading edge 24.
  • the proportions on the drawing, are not respected so as to allow a better representation.
  • each tube When the punch penetrates into the cork, the thickness of each tube causes forces F of radial compression and because of the speed of penetration, the very high attrition capacity of the cork and the large surface of contact, it is produces a heating that can cause damage to the cork by blackening it until damage to tools whose heat treatments are modified.
  • the present invention provides a device with a variant of the punch station to address the problem just explained.
  • the device has the presence of a punching station 28, a transfer station 30 with a carriage 32, a cutting station 34 of the mother of each blank, a station 36 for measuring the length of each blank, and at least one washer cutting station 38, in this case the succession of a first washer cutting station 38-1, a second washer cutting station 38-2, a third station 38-3. cutter disc and a crust elimination station 40 and the residual fraction of crumb, unused.
  • the punching station 28 comprises a conveyor 42 intended to receive a raw board of cork, after pretreatment with boiling water for example.
  • This board 10 is placed on a conveyor 42 with its face "crust" side conveyor, that is to say the convex side to the conveyor.
  • This station 28 comprises several cutting tools 22-1 and 22-2, that is to say punches in the form of circular section tubes, provided with a refined edge 24 forming a punch block 46.
  • a suitable surface treatment of the cutting tools is provided so that they resist the rise in temperature and so as to limit this rise in temperature. It is also provided lubrication means, not shown because within the reach of those skilled in the art with a lubricant having food qualities for the particular case of the cap and more generally for all applications where the cork is likely to come in contact with a food product.
  • It may be a vaporization deposit, or a sliding contact of said lubricant on the periphery of the tube, immediately before the punching phase.
  • the punch block 46 multi tools 22, is operated in translation perpendicularly to the surface of the board by any means 48 maneuvering adapted, in this case a cylinder 50 to cut, thanks to the tools, blanks E cork.
  • a first transfer station 52 which comprises means for translational movement of the multi-cavity punch block 46 and the blanks contained therein, at least one shuttle 56 for collecting blanks comprising a block 58 with the same number of housings. 60 than tools 22, according to the same geometry of disposition, to receive the blanks and means 62 ejectors blanks of each tool to the corresponding housing 60 of the shuttles.
  • the means 62 ejectors are movable pistons in translation, coming to the right of the upper part of the tools, and pushing the blanks through said tools during movements in translation.
  • a shuttle 56 comprising housings 60 with a layout geometry corresponding to that of the tools 22.
  • the device according to the present invention comprises a punch block 46 multi tools but having a reduced number of tools 22, for example half, arranged in a geometry such that each tool is separate from each of the tools juxtaposed , by a distance equal to at least the diameter of one of the tools.
  • a staggered arrangement of these tools in half is a solution.
  • displacement means in relative translation of the board 10 and the punch block 46.
  • the punch block 46 is displaced in translation in a direction perpendicular to the conveying direction of the board, between the first and second punching strokes so as to cut all necessary blanks leaving the minimum material, as will be explained in the description of the operation of the device and the implementation of the method.
  • the two embodiments can also be combined, that is to say a punch block 46 with a reduced number of tools, displacement means in relative translation of the punch block and the board, and / or lubrication and / or surface treatment of tools.
  • a conveyor may be provided with board supports 10 which move in translation in place of the displacements of the multi-cavity punch block 46.
  • the purpose, as required by the method, is to have a relative movement between the board and the punch block 46 multi fingerprint.
  • pressing means In order to keep the board 10 perfectly in place during the punching operation, there is provided pressing means, not shown, because within the reach of those skilled in the art.
  • These pressing means comprise, according to a preferred embodiment, at least one pressure roller or a set of pressure rollers, integral with the punching station.
  • These pressing means ensure the plating of the board on the conveyor during translational movements of said board and keep it immobilized during the punching strokes.
  • the device At the outlet of the punching station 28, following the direction of production of the plugs, the device comprises the transfer station 30 on a carriage 32 provided with housings 66, arranged with a geometry identical to that of the housings 60.
  • carriages 32 are arranged in number on a carousel so as to transfer said carriages in front of each station.
  • the purpose of the transfer station 30 is to move the blanks contained in the housings 60 of the shuttle 56 of the punching station 28 into the housings 66 of the corresponding carriage 32.
  • the carriage 32 is disposed at a distance D1 from a stop 68 and the blanks are pressed against the stop by pistons 70, for example, so as to refer to this stop.
  • the carriage 32 is displaceable in translation to come to the right of the cutting station 34 of the mother, while keeping the blanks pressed against the stop 68.
  • the cutting station 34 of the mother includes cutting means 72 with a circular cutting blade, driven in rotation like a slicer, arranged at a distance D2 from the stop on which is referenced the shuttle with D2 less than D1.
  • each blank is eliminated and all the blanks are set to the same reference level.
  • the thickness of mother required for each blank is removed without any need to provide a safety margin and therefore a loss of raw material.
  • only the front face is treated so that the different blanks have different lengths, depending on the location of the board from which it came.
  • the maximum thickness of crumb is preserved according to the initial thickness of the cork board.
  • length measuring means 74 are paired with each blank. Such means may advantageously be ultrasonic probes, for example, pressed against the blanks contained in each of the housing of the carriage.
  • each blank has a length L1 ??. Ln of each blank as well as its positioning in the corresponding housing 66 of the carriage 32 are integrated in a software implementation of the method for the following positions.
  • the software can optimize the different thicknesses of washers achievable according to the available roughing length, after removal of the mother, knowing that there will be an unusable fall that corresponds to the crust with a minimum associated loss of crumb .
  • a minimum drop including the crust for example 2.5 mm, is provided so as to allow an appropriate calculation.
  • the first washer cutting station 38-1 is positioned at the output of the length measuring station.
  • This post is of identical design to the resection station of the mother of the drafts E.
  • the rotary cutting disc cutting means are retained, only the cutting thickness is modified.
  • a stop and pushers are provided for the other stations in order to reference the blank, or what remains thereof, to ensure a cut at the length defined by the invention. position of the rotating blade relative to the stop, which defines the thicknesses e1, e2 and e3.
  • the device according to the present invention allows the implementation of the method by optimizing the use of the raw material, by reducing the losses during the casing, by reducing the losses during the cutting of the washers.
  • the washers thus obtained are sorted as soon as they are cut, since the washers of each cutting station are collected in suitable containers, so as to have discs cut in the crumb, of a given thickness.
  • washers can then be combined to make plugs of suitable length, they may undergo possible surfacing treatments, etc.
  • the device is particularly attractive in that the raw material is optimized and the quality of the washers is ensured.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)

Claims (12)

  1. Verfahren für die optimierte Herstellung von Scheiben aus Naturkork für die Produktion von Korkverschlüssen auf der Grundlage einer Korkplatte mit einer Verkrustungsschicht, einer Wachstumsschicht und einem Körper, dadurch gekennzeichnet, dass dieses die folgenden Verfahrensschritte umfasst:
    - Bereitstellen einer rohen Platte aus Naturkork,
    - Ausschneiden von Vorformen aus Kork in eine Richtung im rechten Winkel zur Oberfläche der Platte, um eine bestimmte Gruppe von Vorformen zu bilden,
    - Zuschneiden, im Hinblick auf die Beseitigung der Wachstumsschicht der Vorformen derselben Gruppe,
    - Messen der Länge von jeder Vorform einer Gruppe nach Entfernung der Wachstumsschicht,
    - Zuschneiden der Scheiben auf optimierte Weise in Abhängigkeit von der in der Vorform verfügbaren Länge, wobei die Scheiben zur Produktion von Korkverschlüssen bestimmt sind,
    - Beseitigung des Abfalls, der wenigstens die Dicke umfasst, die der Verkrustungsschicht entspricht.
  2. Verfahren für die optimierte Herstellung von Scheiben aus Naturkork für die Produktion von Korkverschlüssen nach Anspruch 1, dadurch gekennzeichnet, dass das Ausschneiden der Vorformen in derselben Platte in mehreren aufeinanderfolgenden Ausschneidevorgängen derselben Platte bewerkstelligt wird.
  3. Verfahren für die optimierte Herstellung von Scheiben aus Naturkork für die Produktion von Korkverschlüssen nach Anspruch 2, dadurch gekennzeichnet, dass nacheinander ein mehrfacher Ausschneidevorgang von Vorformen mit Schneidewerkzeugen gemäß einer ersten Geometrie von Punkten durchgeführt wird, die sich untereinander in einem Abstand befinden, der größer ist als die Länge eines Durchmessers einer Vorform, ein Umsetzen durch eine relative Verschiebung der Platte bezüglich der Werkzeuge durchgeführt wird, und wenigstens ein weiterer mehrfacher Schneidevorgang zwischen den bereits ausgeführten Ausschnitten der Vorformen gemäß einer zweiten Geometrie durchgeführt wird.
  4. Verfahren zur optimierten Herstellung von Scheiben aus Naturkork für die Produktion von Korkverschlüssen nach Anspruch 3, dadurch gekennzeichnet, dass die erste und die zweite Geometrie identisch sind.
  5. Vorrichtung für das optimierte Zuschneiden von Scheiben aus Naturkork für die Herstellung von Korkverschlüssen für die Ausführung eines Verfahrens nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass diese umfasst:
    - eine Station (28) für das Ausstanzen von Vorformen auf der Grundlage einer rohen Platte (10) aus Naturkork, die eine Verkrustungsschicht, eine Wachstumsschicht und einen Körper umfasst,
    - eine Station (30) für den Transport der Vorformen E mit einem Wagen (32),
    - eine Station (34) zum Abschneiden der Wachstumsschicht von jeder Vorform E,
    - eine Station (36) zur Messung der Länge von jeder Vorform E, nach dem Abschneiden der Wachstumsschicht,
    - wenigstens eine Station (38) zum Zuschneiden der Scheiben, und
    - eine Station (40) zur Beseitigung der verbleibenden Länge einschließlich der Verkrustungsschicht.
  6. Vorrichtung zum optimierten Zuschneiden von Scheiben aus Naturkork für die Produktion von Korkverschlüssen nach Anspruch 5, dadurch gekennzeichnet, dass die Station (28) für das Stanzen eine Förderanlage (42) aufweist, die dazu bestimmt ist, die rohe Platte (10) aus Kork aufzunehmen, und mehrere Schneidewerkzeuge (22) von der Art der Stanzen aufweist, die aus Rohren mit ringförmigem Querschnitt gebildet sind und die mit einer geschärften Schneidekante (24) versehen sind.
  7. Vorrichtung zum optimierten Zuschneiden von Scheiben aus Naturkork für die Produktion von Korkverschlüssen nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Station (28) zum Ausstanzen der Vorformen E einen Stanzblock (46) aufweist, der mehrfache Stanzstellen umfasst und der die Stanzwerkzeuge (22) trägt, und Betätigungsmittel (48) für eine Verschiebung des Stanzblocks (46) im rechten Winkel zur Oberfläche der Platte (10), eine Umsetzstation (52) mit Betätigungsmitteln für eine Verschiebung des Stanzblocks (46) mit mehrfachen Stanzstellen, wenigstens ein Schiffchen (56) für die Aufnahme der Vorformen mit einem Block (58), der eine der Zahl der Schneidewerkzeuge (22) entsprechende Zahl von in der gleichen Geometrie angeordneten Aufnahmen (60) zur Aufnahme der Vorformen E umfasst, und Mittel (62) zum Ausstoß der Formen aus jedem Schneidewerkzeug (22) in die entsprechenden Aufnahmen (60) des Schiffchens aufweist.
  8. Vorrichtung zum optimierten Zuschneiden von Scheiben aus Naturkork für die Produktion von Korkverschlüssen nach Anspruch 7, dadurch gekennzeichnet, dass die Station (30) für den Transport Mittel aufweist, um die Vorformen E, die in den Aufnahmen (60) des Schiffchens (56) für die Aufnahme der Vorformen E der Station (28) für das Stanzen enthalten sind, zu den Aufnahmen (66) des entsprechenden Wagens (32) umzusetzen.
  9. Vorrichtung zum optimierten Zuschneiden von Scheiben aus Naturkork für die Produktion von Korkverschlüssen nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass der Wagen (32) in einer Entfernung D1 von einem Anschlag (68) angeordnet ist, und dass diese Mittel (70) aufweist, um die Vorform des Schiffchens gegen den Anschlag (68) zu bringen, wobei die Station (34) zum Abschneiden der Wachstumsschicht der Vorformen E Schneidemittel (72) aufweist, die in einer Entfernung D2 vom Anschlag angeordnet sind, auf den die Vorformen des Schiffchens bezogen sind, wobei D2 kleiner ist als D1.
  10. Vorrichtung zum optimierten Zuschneiden von Scheiben aus Naturkork für die Produktion von Korkverschlüssen nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass die Station (36) zum Messen der Länge Mittel (74) zum Messen der Länge aufweist, die jeweils mit den Vorformen E1, E2,...En, in jeder Aufnahme des Wagens (32) gepaart sind.
  11. Vorrichtung zum optimierten Zuschneiden von Scheiben aus Naturkork für die Produktion von Korkverschlüssen nach Anspruch 10, dadurch gekennzeichnet, dass die Mittel (74) für die Messung der Länge gegen die Vorformen E gedrückte Ultraschallsonden sind.
  12. Vorrichtung zum optimierten Zuschneiden von Scheiben aus Naturkork für die Produktion von Korkverschlüssen nach einem der Ansprüche 5 bis 11, dadurch gekennzeichnet, dass jede Station (38) zum Zuschneiden der Scheiben einen Anschlag (68) und Stößel aufweist, um die Vorformen auf einen Bezugspunkt zu bringen, und eine sich drehende Schnittscheibe aufweist, um ein Zuschneiden auf die Längen e1, e2 oder e3 zu gewährleisten, die durch die Position der sich drehenden Schnittscheibe bezüglich des zugeordneten Anschlags (68) bestimmt sind.
EP14305791.7A 2013-05-28 2014-05-27 Verfahren und Vorrichtung für die optimierte Herstellung von Naturkorkscheiben für die Herstellung von Flaschenkorken Not-in-force EP2808139B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1354776A FR3006226B1 (fr) 2013-05-28 2013-05-28 Procede et dispositif de production optimisee de rondelles de liege naturel pour la fabrication de bouchons

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EP2808139B1 true EP2808139B1 (de) 2016-12-21

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CN109278139A (zh) * 2018-10-22 2019-01-29 平湖信达软木股份有限公司 软木切片机

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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
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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FR3006226A1 (fr) 2014-12-05
FR3006226B1 (fr) 2015-07-17

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