EP0486770B1 - Method and apparatus for slicing wood laminae from a squared beam - Google Patents

Method and apparatus for slicing wood laminae from a squared beam Download PDF

Info

Publication number
EP0486770B1
EP0486770B1 EP91114048A EP91114048A EP0486770B1 EP 0486770 B1 EP0486770 B1 EP 0486770B1 EP 91114048 A EP91114048 A EP 91114048A EP 91114048 A EP91114048 A EP 91114048A EP 0486770 B1 EP0486770 B1 EP 0486770B1
Authority
EP
European Patent Office
Prior art keywords
support
drive belt
lamina
squared beam
squared
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
EP91114048A
Other languages
German (de)
French (fr)
Other versions
EP0486770A1 (en
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.)
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Original Assignee
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
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 Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik filed Critical Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Publication of EP0486770A1 publication Critical patent/EP0486770A1/en
Application granted granted Critical
Publication of EP0486770B1 publication Critical patent/EP0486770B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/06—Cutting strips from a stationarily- held trunk or piece by a rocking knife carrier, or from rocking trunk or piece by a stationarily-held knife carrier; Veneer- cutting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B25/00—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
    • B27B25/04—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees with feed chains or belts

Definitions

  • the invention relates to a method for the non-cutting removal of wooden lamellae from a square timber, the square timber being conveyed in several successive revolutions along a knife, each of which cuts a wooden lamella until only a remaining lamella remains from the square timber, an endlessly rotating drive belt counteracting the square timber the knife presses.
  • chipless cutting technology Such methods, which are referred to as “chipless cutting technology", are known.
  • One of the advantages of this method is that there is no material loss in the form of sawdust.
  • the prepared, ie all-round processed squared timber is broken down into the wooden slats in several successive runs.
  • wood lamella is understood to mean any flat, elongated wood product up to board thickness. The only waste or material loss that arises with this working process is the remaining lamella after the last wooden lamella has been cut off.
  • the thickness of this remaining lamella and thus the size of the material loss is determined by the fact that the endlessly rotating drive belt, which presses the squared timber against the knife, can only be advanced against the knife to such an extent that it does not come into contact with the knife. otherwise it would be destroyed.
  • the devices for cutting wood lamellae from a square timber without cutting are usually designed in such a way that the square timber is pressed from above against the knife below.
  • the lower run of the endless drive belt has a certain sag even at the highest possible belt tension, which also depends on the belt length and the material properties, in particular the elasticity of the drive belt.
  • the "remaining lamella” is the rest of the squared timber remaining after the last wooden lamella has been cut off. This remaining lamella must still be so thick that the drive belt does not touch the knife due to its sag after passing through the remaining lamella, a considerable additional safety distance having to be maintained because the size of the sag of the drive belt cannot be determined reliably enough and after a long period of operation increases.
  • the object of the invention is to develop a method of the type mentioned at the outset such that the squared timber can be broken down into wooden lamellae as completely as possible, ie with as little material loss as possible. This means that the remaining lamella is thinner than the wooden lamellae produced.
  • This object is achieved in that before the separation of at least the wooden lamella, a supporting lamella is inserted between the drive belt and the remaining lamella of the squared timber and is conveyed together with the latter.
  • the distance to be maintained between the drive belt and the knife when the last wooden lamella is severed can be selected to be so large that the drive belt is reliably prevented from touching and damaging the knife.
  • the thickness of the support lamella is chosen so that it is certainly greater than the largest band slack that occurs. Then the squared timber can be processed except for any thin lamella. Even if the remaining lamella is very thin, the drive belt remains so far away from the knife during the last run that it does not come into contact with the knife when the belt slack subsequently sets in.
  • the support plate preferably a plurality of support plates, is or are conveyed from the outlet of the drive belt to its inlet. This allows working with a relatively small stock of support slats.
  • the support plates are temporarily stored at one point in the circuit.
  • This intermediate storage forms a buffer, which ensures that a sufficient number Support slats are kept ready for use at the belt inlet.
  • the invention also relates to an advantageous device for carrying out the method.
  • the device according to the invention is based on a device with an endlessly rotating height-adjustable drive belt that transports the squared timber in the longitudinal direction and presses the squared timber against a knife that separates the wooden lamella, and with a conveyor device that conveys the squared timber in the circuit to the inlet under the drive belt.
  • the device according to the invention is characterized in that a feed device is arranged in front of the inlet of the drive belt, which places a support lamella on the square timber, and in that a removal device is arranged behind the outlet of the drive belt, which removes the support lamella from the remaining lamella of the square timber, and in that a transport device for the support slats, the removal device connects to the application device.
  • This device increases the construction effort only insignificantly, but enables a significantly increased wood yield by reducing the material losses due to the remaining lamellae.
  • the device or system shown in the drawing serves to separate a wooden lamella 2 from a square timber 1 machined on all sides in each pass.
  • the squared timber 1 is conveyed up on a longitudinal conveyor, for example a chain bed or roller bed 3, and processed in a cutting station 4.
  • an endlessly rotating drive belt 5 is accommodated in a height-adjustable frame 7 guided on the machine frame 6 and is driven by a motor 8.
  • the lower run 5a of the drive belt 5 is supported by the frame 7
  • Pressure rollers 9 pressed against the top of the square timber 1 runs over a roller bed 10 in the machine frame 6 of the cutting station 4 and is pressed by the drive belt 5 against a knife 11 which separates the wooden lamella 2 from the bottom side of the square timber 1.
  • the remaining squared timber or the remaining lamella 1a remaining after the last wooden lamella 2 has been cut off is conveyed away on a roller bed 3a adjoining the cutting station 4.
  • the squared timber 1 is conveyed again in the circuit from the outlet of the cutting station 4 to the separation of further wooden lamellae 2 to the inlet thereof.
  • the rest of the squared timber 1 is referred to as the remaining lamella 1, which is too thin to separate a wooden lamella 2 from it.
  • This remaining lamella 1a is conveyed away after leaving the cutting station 4.
  • an application device 12 is arranged at the inlet of the drive belt 5, the details of which are shown in FIG. 5.
  • a support lamella 17 is laterally displaced from a stack 16, actuated by a pressure medium cylinder 14, from a stack 16, from a stack 16, and placed on the rest of the squared timber 1, which is on the roller conveyor 3 is located.
  • This placement of a support lamella 17 only takes place when the rest of the squared timber 1 has become so thin after the separation of several wooden lamellae 2 that the drive belt 5 would have to be lowered so deep that the lower belt strand 5a after the wood has passed through with the knife 11 in Can come into contact, so that it would be damaged.
  • the supporting lamella 17 placed on the squared timber 1 before the entry into the cutting station 4 increases the distance between the lower belt strand, which is sagging by a certain amount 5a and the knife 11 so that the band strand 5a cannot come into contact with the knife 11.
  • a driven transport roller 18 (FIG. 1) takes over the transport in the longitudinal direction of the squared timber 1 or the remaining lamella 17 placed thereon.
  • the remaining lamella 1a of the square timber 1 remaining after the last wooden lamella 2 has been cut off, together with the supporting lamella 17 located thereon, is conveyed further by a driven transport roller 19 on the roller bed 3a and reaches a removal device 20.
  • the supporting lamella 17 is removed from the remaining lamella 1a by means of pressure-actuated cylinders 21 and sliders 22 and transported in the transverse direction via transverse conveyor belts 23 to a longitudinal conveyor 24. From there, the remaining lamellae 17 return to the stacking device 13 via further transverse conveyor belts 25, which are shown in detail in FIG. 5.
  • the stacking device 13 which forms an intermediate bearing for the support plates 17, has pivot arms 27 which can be actuated by cylinders 26 and which each cycle feed a support plate 17 onto two pivoting flaps 28. If the two swivel flaps 28 are then folded down into the position indicated by dash-dotted lines in FIG. 5, the support plate 17 received thereon falls onto the stack 16. From this stack 16, the individual support plates 17 are then replaced in the manner already described by the Slider 15 removed.
  • FIG. 7 shows, in a representation similar to FIG. 5, another possible embodiment of an intermediate storage device for a plurality of support lamellae 17 on the application device 12.
  • the intermediate storage device is formed here by a flat conveyor 29, for example a belt conveyor, which conveys the support lamellae 17 in the transverse direction.
  • the incoming support lamellae 17 are transferred from the longitudinal conveyor 24 to the cross conveyor 29 by means of a slide 30 and collected there.
  • a two-armed lever 31 At the end of the cross conveyor 29 there is a two-armed lever 31, which is controlled in such a way that it is held alternately in front of the side edge of the foremost support lamella 17 or in a recess 17a on the top of the next support lamella 17 with holding lugs 31a and 31b attached at both ends thereof intervenes.
  • a support lamella 17 is only released for application to the square timber 1 if it was determined in the central control system via a measuring device (not shown) that the rest of the square timber 1 is so thin that the Placing a support plate 17 is required.
  • the squared timber 1 conveyed out of the cutting station 4 runs in the longitudinal direction via the removal device 20 to a cross conveyor 32 and arrives from there via a longitudinal conveyor 33 and one another (not shown) cross conveyor again to the inlet of the cutting station. If a support lamella 17 was placed, which was at least before the last wooden lamella 2 was cut off, but possibly already - depending on the thickness of the wooden lamellae - when the preceding wooden lamellae, the support lamella 17 is removed in the removal device 20 in the manner already described and conveyed again in the circuit to the inlet of the cutting station 4. If the remaining lamella 1a remaining after the last wooden lamella 2 has been cut off is so thin that no further wooden lamella 2 can be separated therefrom, then this remaining lamella 1a is conveyed away without again coming to the cutting station 4.
  • FIG. 6 a modified version of the system is shown in FIG. 6.
  • the support lamella 17 is lifted from the squared timber 1 or the remaining lamella 1a located in the removal device 20 and conveyed in the longitudinal direction up to a cross conveyor 34.
  • the support plates 17 used here have longitudinal grooves on their longitudinal edges, in which guide wheels 35 engage from both sides. The guide wheels 35 raise the support plate 17 and promote it in the longitudinal direction.
  • the circulation of the support lamellae 17 takes place, as already described, via the cross conveyor 34 and the longitudinal conveyor 24 for the entry of the cutting station.
  • the squared timber 1 or the remaining lamella 1a is taken over by the cross conveyor 32 and transferred to the longitudinal conveyor 33.
  • the intermediate storage device 13 or 29 is shown on the application device 12.
  • the intermediate storage facility can also be located on the Removal device 20 or in the region of the transport devices which support the support lamella 17 in the circuit.
  • the support lamellae 17 consist of wear-resistant material, for example of metal, plastic, hardwood, wood composite material or laminated material. Their wear resistance should be so high that they have a sufficiently long service life. However, the material should be so soft that it does not damage the knife 11 when the support plate 17 comes into contact with the knife 11.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Processing Of Solid Wastes (AREA)
  • Laser Beam Processing (AREA)

Abstract

In a cutting station (4), a squared beam (1) is moved by a circulating drive band (5) along a cutter (11), which slices a wood lamina (2) from the squared beam (1). The squared beam (1) is moved along the cutter (11) in repeated circulation. When the remaining squared beam (1) has become so thin that there is the risk that the drive band (5) will come into contact with the cutter (11) and be damaged, a supporting lamina (17) is placed on the squared beam (1) at the run-in. The supporting lamina (17) is removed from the residual lamina (1a) of the squared beam (1) at the run-out and returned in the cycle to the run-in. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum spanlosen Abtrennen von Holzlamellen von einem Kantholz, wobei das Kantholz in mehreren aufeinanderfolgenden Umläufen an einem Messer entlanggefördert wird, das jeweils eine Holzlamelle abtrennt, bis von dem Kantholz nur eine Restlamelle verbleibt, wobei ein endlos umlaufendes Antriebsband das Kantholz gegen das Messer drückt.The invention relates to a method for the non-cutting removal of wooden lamellae from a square timber, the square timber being conveyed in several successive revolutions along a knife, each of which cuts a wooden lamella until only a remaining lamella remains from the square timber, an endlessly rotating drive belt counteracting the square timber the knife presses.

Derartige Verfahren, die als "spanlose Schneidtechnik" bezeichnet werden, sind bekannt. Einer der Vorteile dieses Verfahrens besteht darin, daß kein Materialverlust in Form von Sägespänen auftritt. Das vorbereitete, d.h. allseitig bearbeitete Kantholz wird in mehreren aufeinanderfolgenden Durchläufen in die Holzlamellen zerlegt. Unter "Holzlamelle" wird in diesem Zusammenhang jedes flache, längliche Holzerzeugnis bis hin zur Brettstärke verstanden. Der einzige Abfall bzw. Materialverlust, der bei diesem Arbeitsverfahren anfällt, besteht in der nach dem Abtrennen der letzten Holzlamelle verbleibenden Restlamelle.Such methods, which are referred to as "chipless cutting technology", are known. One of the advantages of this method is that there is no material loss in the form of sawdust. The prepared, ie all-round processed squared timber is broken down into the wooden slats in several successive runs. In this context, "wood lamella" is understood to mean any flat, elongated wood product up to board thickness. The only waste or material loss that arises with this working process is the remaining lamella after the last wooden lamella has been cut off.

Die Dicke dieser Restlamelle und damit die Größe des Materialverlustes ist durch die Tatsache bestimmt, daß das endlos umlaufende Antriebsband, das das Kantholz gegen das Messer drückt, nur so weit gegen das Messer zugestellt werden kann, daß es nicht in Berührung mit dem Messer kommt, da es anderenfalls zerstört würde.The thickness of this remaining lamella and thus the size of the material loss is determined by the fact that the endlessly rotating drive belt, which presses the squared timber against the knife, can only be advanced against the knife to such an extent that it does not come into contact with the knife. otherwise it would be destroyed.

In diesem Zusammenhang ist zu berücksichtigen, daß die Vorrichtungen zum spanlosen Abtrennen von Holzlamellen von einem Kantholz üblicherweise so ausgeführt werden, daß das Kantholz von oben gegen das untenliegende Messer gedrückt wird. Das untere Trum des endlosen Antriebsbandes weist auch bei der höchstmöglichen Bandspannung noch einen gewissen Durchhang auf, der auch von der Bandlänge und den Materialeigenschaften, insbesondere der Elastizität des Antriebsbandes abhängt.In this context, it should be borne in mind that the devices for cutting wood lamellae from a square timber without cutting are usually designed in such a way that the square timber is pressed from above against the knife below. The lower run of the endless drive belt has a certain sag even at the highest possible belt tension, which also depends on the belt length and the material properties, in particular the elasticity of the drive belt.

Als "Restlamelle" wird der nach dem Abtrennen der letzten Holzlamelle verbleibende Rest des Kantholzes bezeichnet. Diese Restlamelle muß noch so dick sein, daß das Antriebsband nach dem Durchlaufen der Restlamelle infolge seines Durchhangs das Messer nicht berührt, wobei ein erheblicher zusätzlicher Sicherheitsabstand eingehalten werden muß, weil die Größe des Durchhangs des Antriebsbandes nicht ausreichend zuverlässig bestimmt werden kann und nach längerer Betriebsdauer zunimmt.The "remaining lamella" is the rest of the squared timber remaining after the last wooden lamella has been cut off. This remaining lamella must still be so thick that the drive belt does not touch the knife due to its sag after passing through the remaining lamella, a considerable additional safety distance having to be maintained because the size of the sag of the drive belt cannot be determined reliably enough and after a long period of operation increases.

Aufgabe der Erfindung ist es, ein Verfahren der eingangs genannten Gattung so auszubilden, daß das Kantholz so vollständig wie möglich, d.h. mit möglichst geringem Materialverlust, in Holzlamellen zerlegt werden kann. Dies bedeutet, daß die verbleibende Restlamelle dünner ist als die erzeugten Holzlamellen.The object of the invention is to develop a method of the type mentioned at the outset such that the squared timber can be broken down into wooden lamellae as completely as possible, ie with as little material loss as possible. This means that the remaining lamella is thinner than the wooden lamellae produced.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß vor dem Abtrennen mindestens der Holzlamelle eine Stützlamelle zwischen das Antriebsband und die Restlamelle des Kantholzes eingelegt und zusammen mit dieser gefördert wird.This object is achieved in that before the separation of at least the wooden lamella, a supporting lamella is inserted between the drive belt and the remaining lamella of the squared timber and is conveyed together with the latter.

Durch diese Stützlamelle kann der beim Abtrennen der letzten Holzlamelle einzuhaltende Abstand zwischen dem Antriebsband und dem Messer so groß gewählt werden, daß mit Sicherheit verhindert wird, daß das Antriebsband das Messer berührt und beschädigt. Die Dicke der Stützlamelle wird so gewählt, daß sie mit Sicherheit größer ist als der größte auftretende Banddurchhang. Dann kann das Kantholz bis auf eine beliebig dünne Restlamelle verarbeitet werden. Auch wenn die Restlamelle sehr dünn ist, bleibt das Antriebsband beim letzten Durchlauf noch in einem so großen Abstand zum Messer, daß es bei dem sich anschließend einstellenden Banddurchhang nicht mit dem Messer in Berührung kommt.By means of this support lamella, the distance to be maintained between the drive belt and the knife when the last wooden lamella is severed can be selected to be so large that the drive belt is reliably prevented from touching and damaging the knife. The thickness of the support lamella is chosen so that it is certainly greater than the largest band slack that occurs. Then the squared timber can be processed except for any thin lamella. Even if the remaining lamella is very thin, the drive belt remains so far away from the knife during the last run that it does not come into contact with the knife when the belt slack subsequently sets in.

Um einen ununterbrochenen Arbeitsablauf zu ermöglichen, ist in Ausgestaltung des Erfindungsgedankens vorgesehen, daß die Stützlamelle, vorzugsweise mehrere Stützlamellen, vom Auslauf des Antriebsbandes zu dessen Einlauf gefördert wird bzw. werden. Dadurch kann mit einem verhältnismäßig geringen Vorrat an Stützlamellen gearbeitet werden.In order to enable an uninterrupted workflow, it is provided in an embodiment of the inventive concept that the support plate, preferably a plurality of support plates, is or are conveyed from the outlet of the drive belt to its inlet. This allows working with a relatively small stock of support slats.

Um sicherzustellen, daß unter allen Betriebsbedingungen immer eine Stützlamelle am Bandeinlauf zur Verfügung steht, wenn sie benötigt wird, ist in weiterer Ausgestaltung des erfindungsgemäßen Verfahrens vorgesehen, daß die Stützlamellen an einer Stelle des Kreislaufs zwischengelagert werden. Dieses Zwischenlager bildet einen Puffer, der gewährleistet, daß ausreichend viele Stützlamellen für den Einsatz am Bandeinlauf bereitgehalten werden.In order to ensure that a support plate is always available at the strip inlet under all operating conditions when it is needed, it is provided in a further embodiment of the method according to the invention that the support plates are temporarily stored at one point in the circuit. This intermediate storage forms a buffer, which ensures that a sufficient number Support slats are kept ready for use at the belt inlet.

Die Erfindung betrifft auch eine vorteilhafte Vorrichtung zur Durchführung des Verfahrens. Die erfindungsgemäße Vorrichtung geht aus von einer Vorrichtung mit einem das Kantholz in Längsrichtung transportierenden, endlos umlaufenden höhenverstellbaren Antriebsband, das das Kantholz gegen ein die Holzlamelle abtrennendes Messer drückt, und mit einer das Kantholz im Kreislauf zum Einlauf unter das Antriebsband fördernden Fördereinrichtung.The invention also relates to an advantageous device for carrying out the method. The device according to the invention is based on a device with an endlessly rotating height-adjustable drive belt that transports the squared timber in the longitudinal direction and presses the squared timber against a knife that separates the wooden lamella, and with a conveyor device that conveys the squared timber in the circuit to the inlet under the drive belt.

Die erfindungsgemäße Vorrichtung ist dadurch gekennzeichnet, daß vor dem Einlauf des Antriebsbandes eine Anlegeeinrichtung angeordnet ist, die eine Stützlamelle an das Kantholz anlegt, und daß hinter dem Auslauf des Antriebsbandes eine Abnahmeeinrichtung angeordnet ist, die die Stützlamelle von der Restlamelle des Kantholzes abnimmt, und daß eine Transporteinrichtung für die Stützlamellen, die Abnahmeeinrichtung mit der Anlegeeinrichtung verbindet.The device according to the invention is characterized in that a feed device is arranged in front of the inlet of the drive belt, which places a support lamella on the square timber, and in that a removal device is arranged behind the outlet of the drive belt, which removes the support lamella from the remaining lamella of the square timber, and in that a transport device for the support slats, the removal device connects to the application device.

Diese Vorrichtung vergrößert den Bauaufwand nur unwesentlich, ermöglicht aber eine wesentlich erhöhte Holzausbeute durch Verrringerung der Materialverluste durch die verbleibenden Restlamellen.This device increases the construction effort only insignificantly, but enables a significantly increased wood yield by reducing the material losses due to the remaining lamellae.

Vorteile Ausgestaltungen des Erfindungsgedankens sind Gegenstand weiterer Unteransprüche.Advantages Embodiments of the inventive concept are the subject of further dependent claims.

Die Erfindung wird nachfolgend an Ausführungsbeispielen näher erläutert, die in der Zeichnung dargestellt sind. Es zeigt:

  • Fig. 1 in einer Seitenansicht eine Vorrichtung zum spanlosen Abtrennen von Holzlamellen von einem Kantholz,
  • Fig. 2 eine Draufsicht auf die Vorrichtung nach Fig. 1 mit einer Transporteinrichtung für die Stützlamellen,
  • Fig. 3 eine Draufsicht auf die Abnahme- und Fördereinrichtungen für die Stützlamelle und für die abgetrennte Holzlamelle am Auslauf,
  • Fig. 4 einen vergrößerten Schnitt längs der Linie IV-IV in Fig. 2,
  • Fig. 5 einen vergrößerten Schnitt längs der Linie V-V in Fig. 2,
  • Fig. 6 eine Draufsicht ähnlich der Fig. 3 auf eine abgewandelte Ausführungsform und
  • Fig. 7 einen Schnitt ähnlich der Fig. 5 durch eine abgewandelte Ausführungsform.
The invention is explained in more detail below using exemplary embodiments which are illustrated in the drawing. It shows:
  • 1 is a side view of a device for cutting wood lamellas from a square timber without cutting,
  • 2 shows a top view of the device according to FIG. 1 with a transport device for the supporting lamellae,
  • 3 is a plan view of the removal and conveying devices for the support lamella and for the separated wooden lamella at the outlet,
  • 4 shows an enlarged section along the line IV-IV in FIG. 2,
  • 5 is an enlarged section along the line VV in Fig. 2,
  • Fig. 6 is a plan view similar to FIG. 3 on a modified embodiment and
  • Fig. 7 shows a section similar to FIG. 5 through a modified embodiment.

Die in der Zeichnung dargestellte Vorrichtung bzw. Anlage dient dazu, von einem allseitig bearbeiteten Kantholz 1 in jedem Durchlauf jeweils eine Holzlamelle 2 abzutrennen. Das Kantholz 1 wird auf einem Längsförderer, beispielsweise einem Kettenbett oder Rollenbett 3 herangefördert und in einer Schneidstation 4 bearbeitet.The device or system shown in the drawing serves to separate a wooden lamella 2 from a square timber 1 machined on all sides in each pass. The squared timber 1 is conveyed up on a longitudinal conveyor, for example a chain bed or roller bed 3, and processed in a cutting station 4.

In der Schneidstation 4 ist ein endlos umlaufendes Antriebsband 5 in einem höhenverstellbar am Maschinengestell 6 geführten Rahmen 7 aufgenommen und wird von einem Motor 8 angetrieben. Das untere Trum 5a des Antriebsbandes 5 wird durch im Rahmen 7 gelagerte Druckrollen 9 gegen die Oberseite des Kantholzes 1 gedrückt läuft über ein Rollenbett 10 im Maschinengestell 6 der Schneidstation 4 und wird durch das Antriebsband 5 gegen ein Messer 11 gedrückt, das von der Unterseite des Kantholzes 1 die Holzlamelle 2 abtrennt. Das verbleibende Kantholz bzw. die nach dem Abtrennen der letzten Holzlamelle 2 verbleibende Restlamelle 1a wird auf einem an die Schneidstation 4 anschließenden Rollenbett 3a weggefördert. Wie später noch näher beschrieben wird, wird das Kantholz 1 zum Abtrennen weiterer Holzlamellen 2 im Kreislauf vom Auslauf der Schneidstation 4 wieder zu deren Einlauf gefördert. Als Restlamelle 1a wird der Rest des Kantholzes 1 bezeichnet, der zu dünn ist, um davon noch eine Holzlamelle 2 abzutrennen. Diese Restlamelle 1a wird nach dem Verlassen der Schneidstation 4 weggefördert.In the cutting station 4, an endlessly rotating drive belt 5 is accommodated in a height-adjustable frame 7 guided on the machine frame 6 and is driven by a motor 8. The lower run 5a of the drive belt 5 is supported by the frame 7 Pressure rollers 9 pressed against the top of the square timber 1 runs over a roller bed 10 in the machine frame 6 of the cutting station 4 and is pressed by the drive belt 5 against a knife 11 which separates the wooden lamella 2 from the bottom side of the square timber 1. The remaining squared timber or the remaining lamella 1a remaining after the last wooden lamella 2 has been cut off is conveyed away on a roller bed 3a adjoining the cutting station 4. As will be described in more detail later, the squared timber 1 is conveyed again in the circuit from the outlet of the cutting station 4 to the separation of further wooden lamellae 2 to the inlet thereof. The rest of the squared timber 1 is referred to as the remaining lamella 1, which is too thin to separate a wooden lamella 2 from it. This remaining lamella 1a is conveyed away after leaving the cutting station 4.

Wie in Fig. 2 gezeigt, ist am Einlauf des Antriebsbandes 5 eine Anlegeeinrichtung 12 angeordnet, deren Einzelheiten in Fig. 5 dargestellt sind. Aus einer Stapeleinrichtung 13, die später noch näher beschrieben wird, wird durch einen von einem Druckmittelzylinder 14 betätigten Schieber 15 aus einem Stapel 16 jeweils aus dem untersten Stapelplatz eine Stützlamelle 17 seitlich verschoben und auf den Rest des Kantholzes 1 aufgelegt, der sich auf der Rollenbahn 3 befindet. Dieses Auflegen einer Stützlamelle 17 erfolgt nur, wenn der Rest des Kantholzes 1 nach dem Abtrennen mehrerer Holzlamellen 2 so dünn geworden ist, daß das Antriebsband 5 so tief abgesenkt werden müßte, daß das untere Bandtrum 5a nach dem Durchlauf des Holzes mit dem Messer 11 in Berührung kommen könnte, so daß es beschädigt würde. Die vor dem Einlauf in die Schneidstation 4 auf das Kantholz 1 aufgelegte Stützlamelle 17 vergrößert den Abstand zwischen dem unteren, um einen gewissen Betrag durchhängenden Bandtrum 5a und dem Messer 11 so, daß das Bandtrum 5a nicht mit dem Messer 11 in Berührung kommen kann. Auf dem Rollenbett 3 übernimmt eine angetriebene Transportwalze 18 (Fig. 1) den Transport in Längsrichtung des Kantholzes 1 bzw. der darauf aufgelegten Restlamelle 17.As shown in FIG. 2, an application device 12 is arranged at the inlet of the drive belt 5, the details of which are shown in FIG. 5. From a stacking device 13, which will be described in more detail later, a support lamella 17 is laterally displaced from a stack 16, actuated by a pressure medium cylinder 14, from a stack 16, from a stack 16, and placed on the rest of the squared timber 1, which is on the roller conveyor 3 is located. This placement of a support lamella 17 only takes place when the rest of the squared timber 1 has become so thin after the separation of several wooden lamellae 2 that the drive belt 5 would have to be lowered so deep that the lower belt strand 5a after the wood has passed through with the knife 11 in Could come into contact, so that it would be damaged. The supporting lamella 17 placed on the squared timber 1 before the entry into the cutting station 4 increases the distance between the lower belt strand, which is sagging by a certain amount 5a and the knife 11 so that the band strand 5a cannot come into contact with the knife 11. On the roller bed 3, a driven transport roller 18 (FIG. 1) takes over the transport in the longitudinal direction of the squared timber 1 or the remaining lamella 17 placed thereon.

Am Auslauf des Antriebsbandes 5 bzw. der Schneidstation 4 wird die nach dem Abschneiden der letzten Holzlamelle 2 verbleibende Restlamelle 1a des Kantholzes 1 zusammen mit der darauf befindlichen Stützlamelle 17 von einer angetriebenen Transportwalze 19 auf dem Rollenbett 3a weitergefördert und gelangt in eine Abnahmeeinrichtung 20.At the outlet of the drive belt 5 or the cutting station 4, the remaining lamella 1a of the square timber 1 remaining after the last wooden lamella 2 has been cut off, together with the supporting lamella 17 located thereon, is conveyed further by a driven transport roller 19 on the roller bed 3a and reaches a removal device 20.

In der Abnahmeeinrichtung 20, deren Einzelheiten in Fig. 4 dargestellt sind, wird die Stützlamelle 17 mittels druckmittelbetätigter Zylinder 21 und Schiebern 22 von der Restlamelle 1a abgenommen und in Querrichtung über Querförderbänder 23 auf einen Längsförderer 24 transportiert. Von dort gelangen die Restlamellen 17 über weitere Querförderbänder 25, die in Einzelheiten in Fig. 5 dargestellt sind, im Kreislauf wieder zur Stapeleinrichtung 13.In the removal device 20, the details of which are shown in FIG. 4, the supporting lamella 17 is removed from the remaining lamella 1a by means of pressure-actuated cylinders 21 and sliders 22 and transported in the transverse direction via transverse conveyor belts 23 to a longitudinal conveyor 24. From there, the remaining lamellae 17 return to the stacking device 13 via further transverse conveyor belts 25, which are shown in detail in FIG. 5.

Die Stapeleinrichtung 13, die ein Zwischenlager für die Stützlamellen 17 bildet, weist durch Zylinder 26 betätigbare Schwenkarme 27 auf, die taktweise jeweils eine Stützlamelle 17 auf zwei Schwenkklappen 28 fördern. Wenn die beiden Schwenkklappen 28 anschließend in die in Fig. 5 mit strichpunktierten Linien angedeutete Stellung nach unten geklappt werden, fällt die darauf aufgenommene Stützlamelle 17 auf den Stapel 16. Aus diesem Stapel 16 werden die einzelnen Stützlamellen 17 dann in der schon beschriebenen Weise durch den Schieber 15 entnommen.The stacking device 13, which forms an intermediate bearing for the support plates 17, has pivot arms 27 which can be actuated by cylinders 26 and which each cycle feed a support plate 17 onto two pivoting flaps 28. If the two swivel flaps 28 are then folded down into the position indicated by dash-dotted lines in FIG. 5, the support plate 17 received thereon falls onto the stack 16. From this stack 16, the individual support plates 17 are then replaced in the manner already described by the Slider 15 removed.

Fig. 7 zeigt in einer Darstellung ähnlich der Fig. 5 eine andere mögliche Ausführungsform einer Zwischenlagereinrichtung für mehrere Stützlamellen 17 an der Anlegeeinrichtung 12. Die Zwischenlagereinrichtung wird hierbei von einem die Stützlamellen 17 in Querrichtung fördernden Flachförderer 29, beispielsweise einem Bandförderer gebildet. Die ankommenden Stützlamellen 17 werden mittels eines Schiebers 30 von dem Längsförderer 24 auf den Querförderer 29 übergeben und dort gesammelt. Am Ende des Querförderers 29 ist ein zweiarmiger Hebel 31 angeordnet, der so gesteuert wird, daß er mit an seinen beiden Enden angebrachten Haltenasen 31a bzw. 31b abwechselnd vor die Seitenkante der vordersten Stützlamelle 17 oder in eine Ausnehmung 17a an der Oberseite der nächstfolgenden Stützlamelle 17 eingreift. Durch die taktweise Steuerung dieses zweiarmigen Hebels 31 wird eine Stützlamelle 17 jeweils nur dann zum Anlegen an das Kantholz 1 freigegeben, wenn in der zentralen Steuerung über eine (nicht dargestellte) Meßeinrichtung festgestellt wurde, daß der Rest des Kantholzes 1 so dünn ist, daß das Auflegen einer Stützlamelle 17 erforderlich ist.FIG. 7 shows, in a representation similar to FIG. 5, another possible embodiment of an intermediate storage device for a plurality of support lamellae 17 on the application device 12. The intermediate storage device is formed here by a flat conveyor 29, for example a belt conveyor, which conveys the support lamellae 17 in the transverse direction. The incoming support lamellae 17 are transferred from the longitudinal conveyor 24 to the cross conveyor 29 by means of a slide 30 and collected there. At the end of the cross conveyor 29 there is a two-armed lever 31, which is controlled in such a way that it is held alternately in front of the side edge of the foremost support lamella 17 or in a recess 17a on the top of the next support lamella 17 with holding lugs 31a and 31b attached at both ends thereof intervenes. Due to the cyclical control of this two-armed lever 31, a support lamella 17 is only released for application to the square timber 1 if it was determined in the central control system via a measuring device (not shown) that the rest of the square timber 1 is so thin that the Placing a support plate 17 is required.

Fig. 3 zeigt in einer Teildarstellung der Anlage die getrennte Förderung der Stützlamellen 17 und des Kantholzes 1. Das aus der Schneidstation 4 herausgeförderte Kantholz 1 läuft in Längsrichtung über die Abnahmeeinrichtung 20 bis zu einem Querförderer 32 und gelangt von dort über einen Längsförderer 33 und einen weiteren (nicht dargestellten) Querförderer wieder zum Einlauf der Schneidstation. Wenn eine Stützlamelle 17 aufgelegt wurde, was mindestens vor dem Abtrennen der letzten Holzlamelle 2, möglicherweise aber auch schon - je nach Dicke der Holzlamellen - beim Abtrennen der vorhergehenden Holzlamellen der Fall ist, wird in der Abnahmeeinrichtung 20 in der schon beschriebenen Weise die Stützlamelle 17 abgenommen und im Kreislauf wieder zum Einlauf der Schneidstation 4 gefördert. Wenn die nach dem Abtrennen der letzten Holzlamelle 2 verbleibende Restlamelle 1a so dünn ist, daß davon keine weitere Holzlamelle 2 mehr abgetrennt werden kann, dann wird diese Restlamelle 1a weggefördert, ohne noch einmal zum Einlauf der Schneidstation 4 zu kommen.3 shows in a partial representation of the system the separate conveying of the supporting lamellae 17 and the squared timber 1. The squared timber 1 conveyed out of the cutting station 4 runs in the longitudinal direction via the removal device 20 to a cross conveyor 32 and arrives from there via a longitudinal conveyor 33 and one another (not shown) cross conveyor again to the inlet of the cutting station. If a support lamella 17 was placed, which was at least before the last wooden lamella 2 was cut off, but possibly already - depending on the thickness of the wooden lamellae - when the preceding wooden lamellae, the support lamella 17 is removed in the removal device 20 in the manner already described and conveyed again in the circuit to the inlet of the cutting station 4. If the remaining lamella 1a remaining after the last wooden lamella 2 has been cut off is so thin that no further wooden lamella 2 can be separated therefrom, then this remaining lamella 1a is conveyed away without again coming to the cutting station 4.

In einer Darstellung ähnlich der Fig. 3 ist in Fig. 6 eine abgewandelte Ausführung der Anlage dargestellt. Hierbei wird in der Abnahmeeinrichtung 20 die Stützlamelle 17 von dem darunter befindlichen Kantholz 1 bzw. der Restlamelle 1a abgehoben und in Längsrichtung bis zu einem Querförderer 34 weitergefördert. Zu diesem Zweck weisen die hier verwendeten Stützlamellen 17 an ihren Längsrändern längsverlaufende Rillen auf, in die Führungsräder 35 von beiden Seiten eingreifen. Die Führungsräder 35 heben die Stützlamelle 17 an und fördern sie in Längsrichtung. Der Kreislauf der Stützlamellen 17 erfolgt wie schon beschrieben über den Querförderer 34 und den Längsförderer 24 zum Einlauf der Schneidstation.In a representation similar to FIG. 3, a modified version of the system is shown in FIG. 6. Here, the support lamella 17 is lifted from the squared timber 1 or the remaining lamella 1a located in the removal device 20 and conveyed in the longitudinal direction up to a cross conveyor 34. For this purpose, the support plates 17 used here have longitudinal grooves on their longitudinal edges, in which guide wheels 35 engage from both sides. The guide wheels 35 raise the support plate 17 and promote it in the longitudinal direction. The circulation of the support lamellae 17 takes place, as already described, via the cross conveyor 34 and the longitudinal conveyor 24 for the entry of the cutting station.

In der Abnahmeeinrichtung 20 wird das Kantholz 1 bzw. die Restlamelle 1a vom Querförderer 32 übernommen und an den Längsförderer 33 übergeben.In the removal device 20, the squared timber 1 or the remaining lamella 1a is taken over by the cross conveyor 32 and transferred to the longitudinal conveyor 33.

Bei den beschriebenen Ausführungsbeispielen ist die Zwischenlagereinrichtung 13 bzw. 29 an der Anlegeeinrichtung 12 dargestellt. Stattdessen kann die Zwischenlagereinrichtung aber auch an der Abnahmeeinrichtung 20 oder im Bereich der die Stützlamellen 17 im Kreislauf fördernden Transporteinrichtungen angeordnet sein.In the exemplary embodiments described, the intermediate storage device 13 or 29 is shown on the application device 12. Instead, the intermediate storage facility can also be located on the Removal device 20 or in the region of the transport devices which support the support lamella 17 in the circuit.

Die Stützlamellen 17 bestehen aus verschleißfestem Material, beispielsweise aus Metall, Kunststoff, Hartholz, Holzverbundmaterial oder Schichtpreßstoff. Ihre Verschleißfestigkeit soll so hoch sein, daß sie eine ausreichend lange Lebensdauer aufweisen. Das Material sollte aber so weich sein, daß es das Messer 11 nicht beschädigt, wenn die Stützlamelle 17 mit dem Messer 11 in Berührung kommt.The support lamellae 17 consist of wear-resistant material, for example of metal, plastic, hardwood, wood composite material or laminated material. Their wear resistance should be so high that they have a sufficiently long service life. However, the material should be so soft that it does not damage the knife 11 when the support plate 17 comes into contact with the knife 11.

Claims (10)

  1. Method for slicing wood laminae from a squared beam, the squared beam being transported along against a cutter in several successive cycles, said cutter in each case slicing off a wood lamina until only one residual lamina of the squared beam remains, an endlessly circulating drive belt pressing the squared beam against the cutter, characterized in that a support lamina is inserted before the separation of at least the last wood lamina between the drive belt and the residual lamina of the squared beam and is transported together with the latter.
  2. Method according to Claim 1, characterized in that the support lamina is transported from the exit of the drive belt to its entry.
  3. Method according to Claim 2, characterized in that several support laminae are transported from the exit of the drive belt to its entry.
  4. Method according to Claim 3, characterized in that the support laminae are stored intermediately at one point in the circuit.
  5. Device for carrying out the method according to one of Claims 1-4 with an endlessly circulating, height-adjustable drive belt (5) transporting the squared beam in a longitudinal direction, which presses the squared beam against a cutter (11) which separates the squared beam and with a transport device transporting the squared beam in the circuit to the entry beneath the drive belt (5), characterized in that a feeder mechanism (12) is located before the entry of the drive belt (5), said mechanism placing a support lamina (17) onto the squared beam (1), and that behind the exit of the drive belt (5) a removal mechanism (20) is located which removes the support lamina (17) from the residual lamina (1a) of the squared beam (1), and that a transport mechanism (23, 24,25; 29, 35) for the support laminae (17) connects the removal mechanism (2) to the feeder mechanism (12).
  6. Device according to Claim 5, characterized in that, at the feeder mechanism (12), the removal mechanism (20) or in the zone of the transport mechanism, an intermediate storage mechanism (13, 29) for several support laminae (17) is located.
  7. Device according to Claim 6, characterized in that the intermediate storage mechanism is a stacking device (13) located near the feeder mechanism (12).
  8. Device according to Claim 6, characterized in that the intermediate storage mechanism is a flat conveyor (29) located near the feeder mechanism (12) which takes up several support laminae (17) side by side and conveys them in a timed manner in a transverse direction.
  9. Device according to Claim 5, characterized in that the support laminae (17) are made of wear-resistant material.
  10. Device according to Claim 9, characterized in that the support laminae (17) are made of metal, plastics, hard wood, composite wood material or moulded laminated material.
EP91114048A 1990-10-20 1991-08-22 Method and apparatus for slicing wood laminae from a squared beam Expired - Lifetime EP0486770B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4033471A DE4033471A1 (en) 1990-10-20 1990-10-20 METHOD AND DEVICE FOR THE CHIP-FREE SEPARATION OF WOOD LAMPS FROM A SQUARE
DE4033471 1990-10-20

Publications (2)

Publication Number Publication Date
EP0486770A1 EP0486770A1 (en) 1992-05-27
EP0486770B1 true EP0486770B1 (en) 1995-01-11

Family

ID=6416758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91114048A Expired - Lifetime EP0486770B1 (en) 1990-10-20 1991-08-22 Method and apparatus for slicing wood laminae from a squared beam

Country Status (3)

Country Link
EP (1) EP0486770B1 (en)
AT (1) ATE116895T1 (en)
DE (2) DE4033471A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4201339C1 (en) * 1992-01-20 1992-07-23 Gebrueder Linck Maschinenfabrik "Gatterlinck" Gmbh & Co Kg, 7602 Oberkirch, De

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295571A (en) * 1963-10-28 1967-01-03 Bork Per Veneer production
US3627006A (en) * 1970-03-02 1971-12-14 Polymer Chemical Co Method and means for producing wood veneer
DE2222694A1 (en) * 1971-04-21 1973-11-22 Marunaka Tekkosho Inc WOOD CUTTING MACHINE
DE3247551C2 (en) * 1982-12-22 1986-12-18 Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe Plant for the production of chipboard, fiberboard or similar boards
DE8701511U1 (en) * 1987-01-31 1988-05-26 Gebrüder Linck Maschinenfabrik "Gatterlinck" GmbH & Co KG, 7602 Oberkirch Device for producing thin boards
FR2625130B1 (en) * 1987-12-28 1990-05-11 Martin Michel LONGITUDINAL WOOD SLICER AND SLICING DEVICE
US4934199A (en) * 1988-03-25 1990-06-19 Boeing Company Method and apparatus for preparing specimens for destructive testing of graphite epoxy composite material

Also Published As

Publication number Publication date
ATE116895T1 (en) 1995-01-15
DE4033471C2 (en) 1992-08-20
EP0486770A1 (en) 1992-05-27
DE59104243D1 (en) 1995-02-23
DE4033471A1 (en) 1992-04-23

Similar Documents

Publication Publication Date Title
DE2648269C2 (en) Method and device for breaking flat glass panes into small pieces or shards
DE3903506A1 (en) SEMI-AUTOMATIC TIE DEVICE
DE3716666C2 (en) Panel slicer with a rip saw and a cross saw
AT518608B1 (en) Kantenanleimvorrichtung
DE1611617A1 (en) Device for stripping off stamping residues
EP2562108A2 (en) Device for transporting multi-layered stacked thin film strip material from an amorphous material
DE69706599T2 (en) A grinding machine, especially for wooden panels
EP0486770B1 (en) Method and apparatus for slicing wood laminae from a squared beam
DE2518359A1 (en) WOODWORKING MACHINE
DE3812005C2 (en)
DE2501012A1 (en) Timber cutting and stacking - transports partial stacks of timber transverse to their long direction and pushes separate stacks onto platform(s)
DE4203683A1 (en) FEEDING DEVICE OF A ROLLER KNIFE ANGLE SHEAR
EP2657142A1 (en) Method and device for handling folded products
DE2505552A1 (en) METHOD AND APPARATUS FOR CUTTING A VENEER SHEET
DE4422194C1 (en) Method of cutting stacked foliated material
DE1560107B2 (en) DEVICE FOR CUTTING A STACK OF ROLLS OF PAPER, CELLULOSE OR THE SAME
DE4035641A1 (en) WASHING MACHINE
DE4422193C1 (en) Cutting method for stack of sheet=like goods
EP0650810B1 (en) Apparatus for slicing wood laminae from squared timber
DE2320907A1 (en) DEVICE FOR THE ALTERNATE FEEDING OF TWO TAPE MATERIALS, IN PARTICULAR PLASTIC EDGES
DE2615733A1 (en) Separating unit for cut wood stacks into planks - has dispenser, transporter and separator drives controlled by presence of wood at next stations
DE102016108318A1 (en) Apparatus for rasping, grating or dicing foodstuffs from a product strand
DE2844620C2 (en) Device for cutting bricks from a strand of clay
DE3914320C2 (en) Cutting device
DE102009054342A1 (en) Method for cutting block shaped substrate into multiple thin lamellas, involves separating lamellas within range of lower surface of substrate in each case

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: A1

Designated state(s): AT CH DE FR GB IT LI SE

17P Request for examination filed

Effective date: 19920817

17Q First examination report despatched

Effective date: 19940408

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI SE

REF Corresponds to:

Ref document number: 116895

Country of ref document: AT

Date of ref document: 19950115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59104243

Country of ref document: DE

Date of ref document: 19950223

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

Effective date: 19950301

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19950711

Year of fee payment: 5

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

Ref country code: CH

Payment date: 19950721

Year of fee payment: 5

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

Ref country code: DE

Payment date: 19950817

Year of fee payment: 5

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

Ref country code: GB

Effective date: 19950822

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

Ref country code: AT

Payment date: 19950824

Year of fee payment: 5

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

Ref country code: FR

Payment date: 19950829

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950822

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

Ref country code: AT

Effective date: 19960822

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

Ref country code: SE

Effective date: 19960823

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

Ref country code: LI

Effective date: 19960831

Ref country code: CH

Effective date: 19960831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: FR

Effective date: 19970430

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

Ref country code: DE

Effective date: 19970501

EUG Se: european patent has lapsed

Ref document number: 91114048.1

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050822