WO2022233412A1 - Appareil et procédé de pose et d'alignement de placages pour former des assemblages de placage pendant la production de panneaux de placage - Google Patents

Appareil et procédé de pose et d'alignement de placages pour former des assemblages de placage pendant la production de panneaux de placage Download PDF

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Publication number
WO2022233412A1
WO2022233412A1 PCT/EP2021/061927 EP2021061927W WO2022233412A1 WO 2022233412 A1 WO2022233412 A1 WO 2022233412A1 EP 2021061927 W EP2021061927 W EP 2021061927W WO 2022233412 A1 WO2022233412 A1 WO 2022233412A1
Authority
WO
WIPO (PCT)
Prior art keywords
veneer
veneers
alignment
transport
area
Prior art date
Application number
PCT/EP2021/061927
Other languages
German (de)
English (en)
Inventor
Steffen EGLER
Klaus Anacker
Ralf HAGNER
Detlef Kroll
Original Assignee
Dieffenbacher Maschinenfabrik Gmbh
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 Dieffenbacher Maschinenfabrik Gmbh filed Critical Dieffenbacher Maschinenfabrik Gmbh
Priority to CN202180097872.2A priority Critical patent/CN117279761A/zh
Priority to PCT/EP2021/061927 priority patent/WO2022233412A1/fr
Priority to EP21728439.7A priority patent/EP4334096A1/fr
Publication of WO2022233412A1 publication Critical patent/WO2022233412A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
    • B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C5/00—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor
    • B27C5/02—Machines with table
    • B27C5/06—Arrangements for clamping or feeding work

Definitions

  • the invention relates to a device for laying and aligning veneers to form veneer packs during the production of veneer panels in a press according to the features of patent claim 1.
  • the invention further relates to a method for laying and aligning veneers to form veneer packs during the production of veneer panels in a press according to the features of patent claim 8.
  • DE 19882772 C2 discloses a method and a device for assembling and feeding veneer packs to a veneer press, in which the veneers are aligned and stacked by transporting them against stops. In some cases, the process and the device must be supported manually. In addition, the device is very expensive and runs over several floors to ensure a proper package creation of the veneers.
  • the object of the present invention is to create a device and a method with which veneers can be aligned more gently and automatically on a transport path in order to then place them in a controlled manner on a laying station to form a veneer pack or a veneer strand.
  • This task also applies in particular to glued veneers which cannot be manipulated from above or can only be manipulated poorly.
  • the object is achieved for a device by arranging a device comprising:
  • an alignment area with an alignment unit in the area of the transport device for predetermined positioning of the veneers wherein at least in this alignment area spaced and separately controllable alignment belts are arranged below the veneers, at least one device for detecting the position of the veneers on the transport device in the transport direction in front of or in the alignment area, and a control device for predetermined positioning of the veneers in the alignment area, the control device
  • sensors preferably non-contact and/or optical sensors
  • the position detection device which are particularly suitable for determining the position of the longitudinal edge and/or the transverse edge of the veneer.
  • 3D scanners or camera systems that are suitable for detecting the position or position of the veneer are also conceivable.
  • At least one means for increasing the friction of the veneer on the transport means can be arranged in the transport device and/or the aligning unit by introducing force in a punctiform, linear and/or planar manner. These means serve to ensure the transport of the veneer on the conveyor belt and can either introduce their force from the surface side opposite the conveyor belt, i.e. from above, into the veneer or under the veneer through the belt or directly create a vacuum on the veneer.
  • a vacuum box, a vacuum belt, a ball, cylinder or roller for applying a force to the veneer could be arranged in the transport device and/or the alignment unit.
  • the control device can be suitable for generating and/or outputting statements about the quality of the veneer, preferably about the angularity of the longitudinal edge to the transverse edge, by evaluating the measurement results.
  • control device can be operatively connected to at least one manipulation or conveying device downstream of the transport device, for example a laying belt for depositing the veneer on a base or for transmitting measurement results and/or statements about the veneers.
  • This information can also be transmitted to higher-level databases or control devices for the entire production plant.
  • At least two spaced-apart means preferably vacuum means and/or a mangle, for introducing force into the veneer can be arranged in such a way that the distance between the means allows an angle of rotation of the veneer to be set if, for example, the alignment belts rotate at different relative speeds of the veneer work.
  • the object is achieved for a method for aligning and laying veneers to form veneer packages during the production of veneer panels in a press with the following method steps:
  • the veneers are fed to a laying area with a stationary or movable base lying on a transport device to form a veneer package or veneer strand from several veneers lying one on top of the other,
  • the veneers pass through an alignment area for aligning the veneers with an alignment unit consisting of at least two alignment belts that run endlessly in the transport direction and can be controlled separately, - the veneers are measured in the transport device before or in the alignment area by means of a position detection device, and
  • the measurement results are processed by a control device and the alignment belts with the veneer lying thereon are controlled at different speed settings until a specified positioning of the veneer on the alignment belts is achieved.
  • the measurement of the position of the veneer is preferably carried out during a transport movement.
  • the veneer can be positioned in the predetermined position while the transport movement is slowing down and/or when the veneer is at a relative standstill, apart from the positioning movement.
  • the positioning of the veneer is particularly preferably monitored and, if necessary, regulated by a second device for position detection.
  • the devices for detecting the position can include non-contact, preferably optical, sensors and these can be used in particular for detecting the position of the longitudinal edge and/or the transverse edge of the veneer.
  • the veneer can be pressed against the respective means of transport in the transport device at least temporarily to increase the static friction, preferably with transport/alignment belts that run over vacuum boxes and are permeable to the vacuum.
  • at least one means for the preferably punctiform and/or linear introduction of force into the veneer preferably a roller, cylinder or ball, can be used in the alignment unit.
  • the veneers can be rotated along one point due to the force applied from above.
  • the position of the veneer is particularly preferably shifted or adjusted transversely to the transport direction in the alignment area.
  • the measured values of the first and/or second position detection device can be used to check the quality of the veneer, preferably to check the angularity of the longitudinal edge to the transverse edge.
  • checking the surface with camera systems is also conceivable in this context.
  • the aligning unit can be used to transfer the veneer to the laying area, or the aligning unit forwards the veneer to suitable means, preferably to a laying belt for depositing the veneer on the base in the laying area.
  • the measured values of the first and/or second position detection can be passed on to manipulation or conveying devices that follow the transport device.
  • At least two spaced-apart means preferably vacuum means and/or a mangle, can be used to introduce force into the veneer, the angle of rotation of the veneer being set by the distance between the means during positioning.
  • several means for introducing force can be arranged, which are controlled accordingly by the control device the need to position or the detected position of the veneer or to adjust the angle of rotation of the veneer.
  • transverse and/or longitudinal positioning in the transport direction can be represented and executed more easily.
  • these means for introducing force are arranged so as to be movable with respect to the horizontal and/or vertical in order to arrange the pivot point flexibly or as required.
  • a roller pressing from above or a suction cup lying against the veneer and/or the alignment belt from below can introduce a force into the veneer for fixing.
  • Fixation does not just mean absolutely static fixation, but it is within the meaning of the invention that the introduction of force is sufficiently dimensioned to influence the change in position caused by the alignment straps.
  • the means are designed as one or more nail-shaped pins. If there are several pins, a degree of freedom should be provided in the horizontal or parallel to the plane of the change in position of the veneer, for example by means of a swivel joint, so that the veneer is not damaged by manipulating the alignment strips.
  • the control device can also be designed as a regulating device, preferably based on a computer system.
  • a computer program product for executing the method described is arranged therein.
  • the alignment device can be operatively connected to a device for the optimized and correctly positioned placement of the veneers on a base in a laying area, here in the example a (reversible) laying belt. It is also within the spirit of the invention that the alignment device includes the laying aspect. This is illustrated by the fact that the control device is also operatively connected to a separate laying belt and/or the possibly movable base or to its control devices and/or drives. This should also include any sensors in this area.
  • the device, in particular the control device is therefore not only suitable for aligning, but also for optimal positioning of the veneer on the base or the veneers that have already been placed and that have already come to rest on the base.
  • the system underlay/laying belt in the laying area could be reduced in terms of its automation effort if the control device takes over the formation of the veneer package or the strand based on the position data of the veneer and generates and transmits the necessary control and/or regulation signals for depositing the veneer at the intended position on the base.
  • the laying area can be arranged in front of an intermittently operating press or a continuously operating press.
  • the movable base can be controlled in such a way that the partially present veneer package moves with each incoming veneer depending on its position in order to enable the optimal deposit position.
  • the laying area or its conveying direction is not absolutely necessary for the laying area or its conveying direction to be arranged transversely to the transport direction of the transport device, as in the exemplary embodiment in the drawing. This can also be arranged at an angle or parallel and is usually decided according to the possible space available on site or other criteria.
  • the alignment unit can also function directly as a laying belt for filing.
  • stacks of veneers In front of the transport area or the transport device, stacks of veneers can be arranged in a staging area, but also systems that provide the veneers in a preferred predetermined order and orientation and transfer them to the transport area. This is particularly advantageous when a layered structure of a veneer pack is required, in which the grain direction changes regularly.
  • a separate transport device was required for each fiber direction. Thanks to the almost non-contact alignment function, there is no need for stops and special transport devices. This does not necessarily mean that they cannot nevertheless be used in a supportive and needs-based manner.
  • the present device is suitable for processing different fiber directions of the veneer.
  • the fiber direction of the veneer can be aligned transversely or longitudinally to the transport direction of the transport device, but the veneer is aligned gently and in the correct position.
  • Flierzu veneers 5 are delivered to a staging area 12 in the transport direction 15 and handed over to a transport device 1 .
  • the transport device 1 transports the corresponding veneer 5 along a transport area 20 to a laying area 2 to create a veneer package 14 on the base 3.
  • a further laying area 3 is shown in parallel on the right-hand side, purely schematically, on which a veneer strand 13 is formed and continuously divided into a continuously operating press 19 can be introduced.
  • the veneer package 14 is introduced into a press 18 that operates in cycles.
  • the design of the laying area 2 is purely schematic and rudimentary, just like the respective press 18/19.
  • the transport area 20 of the transport device 1 is usually adapted to the specifications of the overall system and the specifications for the production of veneer panels. That is why there are variable parameters and installation options in the transport device 1 . What is common, however, is the arrangement of an alignment unit 9 in an alignment area 16 which should be part of the transport area 20 .
  • the transport area usually includes an area where the veneers 5 are transferred or arrive and ends when the veneers 5 are deposited on the base 3 in the laying area 2.
  • the transport area 1 will therefore be configured as required.
  • a preferably reversible laying belt 10 is particularly preferably arranged, which lays the veneers in the correct position at a predetermined location on the base 3 .
  • Other manipulators are also conceivable for this.
  • the alignment unit 9 can also perform the tasks of a laying belt
  • the veneers arriving from the staging area 12 are transferred to the transport area 20 and aligned in the alignment area 16 by the alignment unit 9 .
  • the veneers 5 by means of sensors
  • a device for position detection 8 measured.
  • the measured values are processed in a control device 4 and the alignment belts 6, 7 for aligning the veneer 5 are controlled with calculated and different speed values.
  • the different speed values of the alignment belts 6, 7 are maintained until the veneer 5 is aligned according to the specifications. This alignment is preferably carried out during a negative acceleration ramp which reduces the speed of the veneer.
  • the alignment belts can decelerate the veneer 5 to a standstill and carry out the alignment only by moving an alignment belt 6 or 7 .
  • punctiform, linear or planar force application points can be provided.
  • further sensors 11 or a second position detection device 17 can measure the veneer 5 and/or confirm the alignment or the position of the veneer 5.
  • the aligning unit 9 is preferably arranged as close as possible to the laying area 2 since each transition to a further conveyor belt can again lead to a change in the position with respect to the transport direction 15 .
  • the veneers 5 are generally rectangular and have a longitudinal edge 21 and a transverse edge 22 , with the longitudinal edge 21 preferably being arranged essentially transversely to the transport direction 15 of the transport device 1 .
  • the drawing shows that in the alignment area 16 a sloping veneer 5 arriving there is measured by the device 8 for position detection and its sensors 11, then rotated and aligned by the alignment belts 6/7. The position of the veneer is measured and checked in a second device 17 for position detection 17 and then transferred to the laying belt 10 and laid on the base 3 in the laying area 2 .
  • a veneer with a transverse fiber direction (shown schematically) is shown in the staging area 12 , while the veneer 5 again has a longitudinal fiber direction counter to the transport direction 15 .

Abstract

L'invention concerne un appareil et un procédé d'alignement et de pose de placages pour former des assemblages de placage pendant la production de panneaux de placage dans une presse. Le procédé comprend les étapes suivantes : les placages (5) reposant sur un appareil de transport (1) sont délivrés à une région de pose (2) dotée d'un substrat fixe ou mobile (3) afin de former un assemblage de placage (14) ou une bande de placage (13) ; dans la région de transport (20) de l'appareil de transport (1), les placages passent à travers une région d'alignement (16) destinée à aligner les placages (5) avec une unité d'alignement (9) constituée d'au moins deux bandes d'alignement pouvant être commandées séparément et circulant en continu dans la direction du transport ; les placages sont mesurés dans le dispositif de transport (15) avant ou dans la région d'alignement (16) au moyen d'un dispositif de reconnaissance de position (8, 17) et ; après la mesure de la position des placages, les résultats de la mesure sont traités au moyen d'un dispositif de commande (4) et les bandes d'alignement (6, 7) sur lesquelles repose le placage (5) sont commandées avec des réglages de vitesse différents jusqu'à ce qu'un positionnement prédéterminé du placage sur les bandes d'alignement (6, 7) soit obtenu (1022).
PCT/EP2021/061927 2021-05-05 2021-05-05 Appareil et procédé de pose et d'alignement de placages pour former des assemblages de placage pendant la production de panneaux de placage WO2022233412A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202180097872.2A CN117279761A (zh) 2021-05-05 2021-05-05 在胶合板生产过程中用于将贴面板放置和对齐成贴面板堆叠的设备和方法
PCT/EP2021/061927 WO2022233412A1 (fr) 2021-05-05 2021-05-05 Appareil et procédé de pose et d'alignement de placages pour former des assemblages de placage pendant la production de panneaux de placage
EP21728439.7A EP4334096A1 (fr) 2021-05-05 2021-05-05 Appareil et procédé de pose et d'alignement de placages pour former des assemblages de placage pendant la production de panneaux de placage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2021/061927 WO2022233412A1 (fr) 2021-05-05 2021-05-05 Appareil et procédé de pose et d'alignement de placages pour former des assemblages de placage pendant la production de panneaux de placage

Publications (1)

Publication Number Publication Date
WO2022233412A1 true WO2022233412A1 (fr) 2022-11-10

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Family Applications (1)

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PCT/EP2021/061927 WO2022233412A1 (fr) 2021-05-05 2021-05-05 Appareil et procédé de pose et d'alignement de placages pour former des assemblages de placage pendant la production de panneaux de placage

Country Status (3)

Country Link
EP (1) EP4334096A1 (fr)
CN (1) CN117279761A (fr)
WO (1) WO2022233412A1 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3540567A1 (de) 1984-12-05 1986-06-05 Raute Oy, Lahti Verfahren zur kontinuierlichen herstellung einer schichtplatte
DE19627024A1 (de) 1996-07-04 1998-01-15 Dieffenbacher Gmbh Maschf Verfahren und Anlage zum kontinuierlichen Zusammenlegen und Verleimen von Funiertafeln zu Funierschichtplatten
DE19882772C2 (de) 1997-11-04 2003-10-02 Raute Wood Ltd Verfahren und Vorrichtung zum Zusammenstellen und Zuführen von Furnierpaketen zu einer Schichtholz-Furnierpresse
WO2009112051A1 (fr) * 2008-03-12 2009-09-17 Schuler Automation Gmbh & Co. Kg Dispositif et procédé de positionnement de pièces en forme de plaques
DE102009021367A1 (de) 2009-05-17 2010-11-18 Dieffenbacher Maschinenfabrik Gmbh Verfahren und Anlage zur Herstellung von Schichtholz
DE102009021365A1 (de) 2009-05-17 2010-11-18 Dieffenbacher Maschinenfabrik Gmbh Verfahren und Legestation zur Herstellung von Furnierpaketen aus mehreren Lagen einzelner Furniere im Zuge der Herstellung von Furnierschichtholz
DE102009021368A1 (de) 2009-05-17 2010-11-18 Dieffenbacher Maschinenfabrik Gmbh Verfahren zur Herstellung von Furnierschichtholz und eine Anlage zur Durchführung des Verfahrens
DE102009021364A1 (de) 2009-05-17 2010-11-18 Dieffenbacher Maschinenfabrik Gmbh Verfahren und Legestation zur Herstellung von Furnierpaketen aus mehrerern Lagen einzelner Furnieren im Zuge der Herstellung von Funierschichtholz
DE102012209929A1 (de) 2011-06-15 2013-01-03 Raute Oyj Vorrichtung zum Empfangen und Positionieren von Furnieren, die durch eine Fördereinrichtung in eine gewünschte Position zugeführt werden
EP3338976A1 (fr) * 2016-12-20 2018-06-27 HOMAG GmbH Procédé d'alignement d'une pièce à usiner ainsi que dispositif d'alignement
EP3685978A1 (fr) * 2019-01-28 2020-07-29 Sittex S.R.L. Appareil et méthode pour la production de panneaux

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3540567A1 (de) 1984-12-05 1986-06-05 Raute Oy, Lahti Verfahren zur kontinuierlichen herstellung einer schichtplatte
DE19627024A1 (de) 1996-07-04 1998-01-15 Dieffenbacher Gmbh Maschf Verfahren und Anlage zum kontinuierlichen Zusammenlegen und Verleimen von Funiertafeln zu Funierschichtplatten
DE19882772C2 (de) 1997-11-04 2003-10-02 Raute Wood Ltd Verfahren und Vorrichtung zum Zusammenstellen und Zuführen von Furnierpaketen zu einer Schichtholz-Furnierpresse
WO2009112051A1 (fr) * 2008-03-12 2009-09-17 Schuler Automation Gmbh & Co. Kg Dispositif et procédé de positionnement de pièces en forme de plaques
DE102009021367A1 (de) 2009-05-17 2010-11-18 Dieffenbacher Maschinenfabrik Gmbh Verfahren und Anlage zur Herstellung von Schichtholz
DE102009021365A1 (de) 2009-05-17 2010-11-18 Dieffenbacher Maschinenfabrik Gmbh Verfahren und Legestation zur Herstellung von Furnierpaketen aus mehreren Lagen einzelner Furniere im Zuge der Herstellung von Furnierschichtholz
DE102009021368A1 (de) 2009-05-17 2010-11-18 Dieffenbacher Maschinenfabrik Gmbh Verfahren zur Herstellung von Furnierschichtholz und eine Anlage zur Durchführung des Verfahrens
DE102009021364A1 (de) 2009-05-17 2010-11-18 Dieffenbacher Maschinenfabrik Gmbh Verfahren und Legestation zur Herstellung von Furnierpaketen aus mehrerern Lagen einzelner Furnieren im Zuge der Herstellung von Funierschichtholz
DE102012209929A1 (de) 2011-06-15 2013-01-03 Raute Oyj Vorrichtung zum Empfangen und Positionieren von Furnieren, die durch eine Fördereinrichtung in eine gewünschte Position zugeführt werden
EP3338976A1 (fr) * 2016-12-20 2018-06-27 HOMAG GmbH Procédé d'alignement d'une pièce à usiner ainsi que dispositif d'alignement
EP3685978A1 (fr) * 2019-01-28 2020-07-29 Sittex S.R.L. Appareil et méthode pour la production de panneaux

Also Published As

Publication number Publication date
CN117279761A (zh) 2023-12-22
EP4334096A1 (fr) 2024-03-13

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