EP2308659B1 - Dispositif et procédé destinés à aligner des pièces à usiner - Google Patents

Dispositif et procédé destinés à aligner des pièces à usiner Download PDF

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Publication number
EP2308659B1
EP2308659B1 EP10177849.6A EP10177849A EP2308659B1 EP 2308659 B1 EP2308659 B1 EP 2308659B1 EP 10177849 A EP10177849 A EP 10177849A EP 2308659 B1 EP2308659 B1 EP 2308659B1
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EP
European Patent Office
Prior art keywords
workpiece
workpieces
processing
conveying direction
alignment
Prior art date
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Active
Application number
EP10177849.6A
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German (de)
English (en)
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EP2308659A1 (fr
Inventor
Andreas Lorenz
Rolf Höhn
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Homag GmbH
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Homag GmbH
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Publication date
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Classifications

    • 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
    • B27B31/00—Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines
    • B27B31/06—Adjusting equipment, e.g. using optical projection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F1/00—Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints
    • B27F1/02—Making tongues or grooves, of indefinite length
    • 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

Definitions

  • the present invention relates to a method for aligning workpieces which are preferably at least partially made of wood, wood-based materials, plastic or the like.
  • plate-shaped materials are partially provided with structures, such as, for example, graphic designs or three-dimensional surface structures, as is known, for example, in the case of plate-shaped floor coverings.
  • structures such as, for example, graphic designs or three-dimensional surface structures, as is known, for example, in the case of plate-shaped floor coverings.
  • the problem arises that the dimensions of the panels change depending on the moisture content or other influences such as temperature. Typically, the dimensions decrease as the moisture content decreases.
  • the alignment device has at least one alignment element which can be moved at least within limits in the direction of passage. In this way, the workpieces to be aligned can be conveyed further in the direction of passage even during the detection and alignment process.
  • the approaches mentioned do not solve the problem that occurs when processing the edges of workpieces with structures to the effect that these are not in a desired position after the processing of the edges.
  • the approaches mentioned are not able to take length fluctuations of the decoration or the structure in the individual workpiece into account during processing.
  • the WO_99 / 61212_A1 describes a method of dividing a plate-like article comprising patterns, such as protrusions or recesses, into smaller sections.
  • the EP 2 030 725 A1 known which relates to a device and a method for aligning workpieces.
  • the known device comprises a conveyor device, an optical detection device for detecting a position of the workpieces conveyed on the conveyor device and an alignment device for shifting and aligning the workpieces conveyed on the conveyor device on the basis of a detection result of the detection device.
  • Another document is the GB 2 124 144 A known, which shows a method for cutting wooden workpieces and a corresponding device.
  • a measuring device is provided upstream of the cutting means and comprises a right-angled measuring ramp with a plurality of photodiodes.
  • a device for processing workpieces which is preferably at least in sections made of wood, wood-based materials, plastic or the like, are used, the device having a conveying device for conveying the workpieces in a conveying direction.
  • This conveyor device conveys the workpieces preferably in a straight line or along curved paths.
  • the workpieces are arranged sufficiently slip-proof on the conveyor device, for example fixed by means of negative pressure on their underside, printing on their top or clamping devices, so that they can be transported in a slip-proof manner and processed later.
  • an electronic, optical detection device for detecting a position of a three-dimensional structure of the workpieces conveyed on the conveying device.
  • three-dimensional structures are often used as designs for e.g. plate-shaped flooring materials.
  • a bevel or rounding is pressed into the raw panel in an upstream surface press in such a way that the finished workpieces form a joint (e.g. symmetrical or asymmetrical) when they are put together.
  • Cameras with a CCD or CMOS chip are particularly preferably used as electronic, optical detection devices.
  • 3D scanners are also preferably used for three-dimensional structures.
  • the structure that is detected is arranged between a first narrow workpiece surface and a second narrow workpiece surface, which laterally delimit the workpiece in the conveying direction. Accordingly, the structure that is later to assume a certain target position on the prefabricated component is recorded directly. Merely recording the workpiece edges is not sufficient, since the position of the structure on the component can be different can.
  • the device according to the invention thus directly detects the position of the structure, initially independently of the actual workpiece dimensions, which can fluctuate.
  • a first alignment device for moving and aligning the workpieces conveyed on the conveyor device on the basis of a detection result of the detection device, the first alignment device having a first alignment element that can be moved transversely to the conveying direction.
  • the alignment device can thus move and align the workpiece as a function of the position of the structure on the workpiece determined by the detection device.
  • the direction indicated transversely to the conveying direction means any direction that does not correspond to the conveying direction.
  • the alignment device can be designed in different ways within the scope of the invention and, for example, also work without contact and, if necessary, using gravity.
  • the alignment device preferably acts in a pushing or pulling manner on the workpiece.
  • the workpiece can also be gripped by the alignment device.
  • the device for processing workpieces also has a processing device for processing the first and / or second narrow workpiece surface with at least one first processing means connected downstream of the first alignment element.
  • the processing device is particularly preferably a double-end profiler, which not only changes the dimensions of the workpiece, but also gives the workpiece narrow surfaces a profile or a Format processing unit.
  • the processing means particularly preferably has a milling cutter and preferably a saw blade or a grinding means.
  • the device has at least one processing device for processing the first and / or second narrow workpiece surface, which has at least one first processing means that can be moved transversely to the conveying direction on the basis of a detection result of the detection device.
  • the relative displacement of the processing means to the structure of the workpiece is thus realized by a displacement of the processing means transversely to the conveying direction.
  • an edge application device is arranged downstream of the processing device.
  • the edge attachment device is used to attach an edge to at least one of the narrow workpiece surfaces.
  • the edge preferably consists of a flexible band.
  • a wide variety of technologies that are familiar to a person skilled in the art can be used for the edge application device, such as, for example, a joining technology using a laser or another suitable energy source.
  • the edge attachment device preferably has a cutting unit in order to be able to automatically remove edge material protruding over the narrow workpiece surfaces.
  • the processing device has at least one second processing means.
  • the first processing means preferably acts on the first narrow workpiece surface and the second processing means on the second workpiece narrow surface. This means that both workpiece surfaces can be machined at the same time.
  • Different processing means can also be used as the first and second processing means, which opens up additional possibilities for processing.
  • first processing means and second processing means are provided.
  • at least two of the first processing means and / or two of the second processing means can be moved in a controlled manner transversely to the conveying direction, independently of one another. This enables the individual processing means to be used independently in parallel.
  • Processing means are preferably also designed redundantly so that they can be exchanged while the processing device is running without the processing device having to be stopped.
  • Fig. 1 shows a schematic representation of a first exemplary embodiment of a device 1 for processing workpieces 2.
  • a conveyor device 4 for conveying the workpieces 2 is shown running vertically in this figure.
  • Two workpieces 2, shown as a rectangle, are arranged on the conveyor device 4.
  • the workpieces have an optically recognizable graphic structure 5, shown as a rectangle, on their surface.
  • the conveying device 4 transports the workpieces in the direction of the arrow F.
  • the workpieces 2 have a first narrow workpiece surface 6 and a second narrow workpiece surface 7, seen in the transport direction F, which limit the workpiece 2 laterally in the conveying direction F.
  • An infeed ruler 8 is shown at the bottom left in the graphic. It has the task of pre-aligning the workpiece 2 on its first narrow workpiece surface 6 in a direction transverse to the conveying direction F.
  • a processing device 10 is arranged along the conveying device 4. In this exemplary embodiment, the processing device has three first processing means 11 and three second processing means 12, which are shown here as circles.
  • a detection device 30 for detecting a position of the optical structure 5 of the workpieces 2 conveyed on the conveyor device 4 is shown at the bottom right in the picture.
  • the workpieces 2 are moved in the transport direction F by means of the conveyor device 4. In doing so, they pass the detection device 30, which detects the position of the optical structure 5 of the workpieces 2 conveyed on the conveyor device 4. The workpiece 2 is then conveyed along the machining device 10. It is processed by the first processing means 11 and the second processing means 12.
  • the first processing means 11 can be moved transversely to the conveying direction F on the basis of the detection result of the detection device 30.
  • the position of the structure 5 on the workpiece 2 is determined by the detection device 30 and offset in a control device. With the result of this established actual position of the structure 5 and a specified target geometry, a control of a process of the first processing means 11 transversely to the conveying direction F is carried out. As a result, in this exemplary embodiment, the second narrow workpiece surface 7 can be machined as a function of the position of the structure 5. This makes it possible to obtain a workpiece 2 through the machining that has the structure 5 at a desired distance from the machined second narrow workpiece surface 7.
  • Fig. 2 shows a schematic representation of a second exemplary embodiment of a device 1 for processing workpieces 2.
  • the workpiece 2 is conveyed by the conveying device 4 running from bottom to top in the image.
  • That Workpiece 2 again has a first narrow workpiece surface 6 and a second narrow workpiece surface 7.
  • An optical detection device is provided in order to detect a position of an optical structure 5 of the workpieces 2 conveyed on the conveyor device 4.
  • the structure 5 is arranged between a first narrow workpiece surface 6 and a second narrow workpiece surface 7, which laterally delimit the workpiece 2 in the conveying direction F.
  • the workpiece 2 is pre-adjusted on the conveyor 4 transversely to the conveying direction F by means of an infeed ruler 8.
  • the first narrow workpiece surface 6 is processed by second processing means 12, which are shown here as circles, before the workpiece 2 is fed to the detection device 30.
  • a first alignment device 20 is provided for moving and aligning the workpieces 2 conveyed on the conveyor device 4 on the basis of a detection result of the detection device 30.
  • the first alignment device 20 has a first alignment element 21 which can be moved transversely to the conveying direction F and acts in a pushing manner on the first narrow workpiece surface 6 and thereby displaces the workpiece 2 transversely to the conveying direction F.
  • the first alignment device 20 also has a second alignment element 22, which can be moved transversely to the conveying direction F and acts in a sliding manner on the second narrow workpiece surface 7, thereby displacing the workpiece 2 transversely to the conveying direction F.
  • the workpiece can be positioned on the conveyor 4 by the alignment elements 21 and 22 of this embodiment.
  • the alignment elements 21 and 22 act advantageously one after the other on the workpiece. Instead of a pushing action, other mechanisms can also be used, such as gripping.
  • First processing means 11 of the processing device 10 are arranged downstream of the first alignment device 20.
  • the first processing means 11 act on the second workpiece surface 7.
  • a first alignment element 25 and a second alignment element 26 of a second alignment device 24 are arranged between individual first processing means 11.
  • the second alignment device 24 is provided for moving and aligning the workpieces 2 conveyed on the conveyor device 4 on the basis of a detection result that is provided by a further detection device and / or the detection device 30, not shown in detail.
  • the first alignment element 25 acts in a pushing manner on the first narrow workpiece surface 6, and the second alignment element 26 then acts in a pushing manner on the second narrow workpiece surface 7, as a result of which the workpiece 2 can be pushed back and forth transversely to the conveying direction F.
  • the structure 5 can be positioned between individual processing steps, which enables an even more precise processing result.
  • an edge attachment device 27 is arranged downstream of the processing means 11, 12 and glues the edges to the narrow workpiece surfaces 6, 7.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Attitude Control For Articles On Conveyors (AREA)

Claims (12)

  1. Procédé pour aligner des pièces (2) en utilisant un dispositif (1)
    pour l'usinage de pièces (2) qui consistent de préférence, au moins par sections, en du bois, des matériaux à bois, du plastique ou similaire, dans lequel le dispositif comprend :
    un appareil de transport (4) pour transporter les pièces (2) dans une direction de transport (F) ;
    un appareil de détection optique électronique (30) pour détecter une position d'une structure tridimensionnelle (5) des pièces (2) transportées sur l'appareil de transport (4), dans lequel la structure (5) est disposée entre une première surface étroite de pièce (6) et une seconde surface étroite de pièce (7) qui délimitent la pièce (2) latéralement dans la direction de transport (F) ; et
    un premier appareil d'alignement (20) pour déplacer et aligner les pièces (2) transportées sur l'appareil de transport (4) sur la base d'un résultat de détection de l'appareil de détection (30), dans lequel le premier appareil d'alignement (20) présente un premier élément d'alignement (22) qui peut être déplacé transversalement à la direction de transport (F) ; et
    un appareil d'usinage (10) pour usiner la première et/ou la seconde surface étroite de pièce (6, 7), qui présente au moins un premier moyen d'usinage (11) en aval du premier élément d'alignement (22),
    dans lequel le procédé comprend les étapes de :
    transport d'une pièce (2) au moyen de l'appareil de transport (4) ;
    détection d'une position d'une structure tridimensionnelle (5) des pièces (2) transportées sur l'appareil de transport (4), dans lequel la structure (5) est disposée entre une première surface étroite de pièce (6) et une seconde surface étroite de pièce (7), qui délimitent la pièce (2) latéralement dans la direction de transport (F), sur la pièce, dans lequel la structure tridimensionnelle est un chanfrein ou un arrondi pressé dans une presse de surface de sorte que les pièces usinées forment un joint lorsqu'elles sont placées ensemble,
    déplacement et alignement de la pièce (2) transportée sur l'appareil de transport (4) sur la base du résultat de détection de l'appareil de détection (30) transversalement à la direction de transport (F),
    dans lequel la détection et/ou le déplacement et/ou l'alignement sont réalisés pendant que la pièce (2) est transportée dans la direction de transport (F) ;
    usinage d'au moins une surface étroite de pièce (6, 7).
  2. Procédé pour aligner des pièces (2) utilisant un dispositif (1)
    pour l'usinage de pièces (2) qui consistent de préférence, au moins par sections, en du bois, des matériaux à bois, du plastique ou similaire, dans lequel le dispositif comprend :
    un appareil de transport (4) pour transporter les pièces (2) dans une direction de transport (F) ;
    un appareil de détection optique électronique (30) pour détecter une position d'une structure tridimensionnelle (5) des pièces (2) transportées sur l'appareil de transport (4), dans lequel la structure (5) est disposée entre une première surface étroite de pièce (6) et une seconde surface étroite de pièce (7) qui délimitent la pièce (2) latéralement dans la direction de transport (F) ;
    au moins un appareil d'usinage (10) pour usiner la première et/ou de la seconde surface étroite de pièce (6, 7), qui présente au moins un premier moyen d'usinage (11) qui peut être déplacé transversalement par rapport à la direction de transport (F) sur la base d'un résultat de détection de l'appareil de détection (30),
    dans lequel le procédé comprend les étapes de :
    transport d'une pièce (2) au moyen de l'appareil de transport (4) ;
    détection d'une position d'une structure tridimensionnelle (5) des pièces (2) transportées sur l'appareil de transport (4), dans lequel la structure (5) est disposée entre une première surface étroite de pièce (6) et une seconde surface étroite de pièce (7), qui délimitent la pièce (2) latéralement dans la direction de transport (F), sur la pièce, dans lequel la structure tridimensionnelle est un chanfrein ou un arrondi pressé dans une presse de surface de sorte que les pièces usinées forment un joint lorsqu'elles sont placées ensemble,
    procédé d'au moins un moyen d'usinage (11, 12) de l'appareil d'usinage (10) pour usiner la première et/ou la seconde surface étroite de pièce (6, 7) transversalement à la direction de transport (F) sur la base du résultat de détection de l'appareil de détection (30),
    dans lequel le procédé est réalisé pendant que la pièce (2) est transportée dans la direction de transport (F).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce
    qu'une étape de procédé de placage de bord est réalisée en aval de l'étape de procédé d'usinage.
  4. Procédé selon l'une quelconque des revendications 1, 2 ou 3, caractérisé en ce que l'appareil d'usinage (10) réalise une opération de fraisage.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce
    que la structure (5) est appliquée sur la pièce (2) en amont de la détection d'une position de la structure tridimensionnelle (5).
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un appareil d'application de bord (27) est disposé en aval de l'appareil d'usinage (10).
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'appareil d'usinage (10) présente au moins un second moyen d'usinage (12), dans lequel le premier moyen d'usinage (11) agit de préférence sur la première surface étroite de pièce (6) et le second moyen d'usinage (12) agit de préférence sur la seconde surface étroite de pièce (7), dans lequel le plus préférentiellement plusieurs premiers moyens d'usinage (11) et plusieurs seconds moyens d'usinage (12) sont prévus.
  8. Procédé selon la revendication 7, caractérisé en ce qu'au moins deux des premiers moyens d'usinage (11) et/ou deux des seconds moyens d'usinage (12) peuvent être déplacés par commande indépendamment les uns des autres transversalement à la direction de transport (F).
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un second appareil d'alignement (24) est prévu pour déplacer et aligner les pièces (2) transportées sur l'appareil de transport (4) sur la base d'un résultat de détection de l'appareil de détection (30) et/ou d'un autre appareil de détection, qui présente au moins un premier élément d'alignement (25), qui est mobile transversalement par rapport à la direction de transport (F).
  10. Procédé selon la revendication 9, caractérisé en ce que le second appareil d'alignement (24) présente au moins un second élément d'alignement (26) mobile transversalement par rapport à la direction de transport (F), dans lequel le premier élément d'alignement (25) agit de préférence sur la première surface étroite de pièce (6) et le second élément d'alignement (26) agit de préférence sur la seconde surface étroite de pièce (7), dans lequel le plus préférentiellement plusieurs premiers éléments d'alignement (25) et plusieurs seconds éléments d'alignement (26) sont prévus.
  11. Procédé selon la revendication 10, caractérisé en ce qu'au moins deux des premiers éléments d'alignement (25) et/ou deux des seconds éléments d'alignement (26) peuvent être déplacés indépendamment les uns des autres de manière commandée transversalement à la direction de transport (F).
  12. Procédé selon l'une quelconque des revendications 10 à 11, s'il dépend de la revendication 7,
    caractérisé en ce qu'au moins un des premiers éléments d'alignement (25) est interposé entre les premiers moyens d'usinage (11) et/ou un des seconds éléments d'alignement (26) est interposé entre les seconds moyens d'usinage (12) par rapport à la direction de transport (F).
EP10177849.6A 2009-10-07 2010-09-21 Dispositif et procédé destinés à aligner des pièces à usiner Active EP2308659B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009048442A DE102009048442A1 (de) 2009-10-07 2009-10-07 Vorrichtung und Verfahren zum Ausrichten von Werkstücken

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EP2308659A1 EP2308659A1 (fr) 2011-04-13
EP2308659B1 true EP2308659B1 (fr) 2021-10-27

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CN104441088A (zh) * 2014-11-28 2015-03-25 四川省森泰号家具制造有限公司 一种家具加工装置
DE102015008891B3 (de) * 2015-07-09 2016-08-25 Ima Klessmann Gmbh Holzbearbeitungssysteme Verfahren und Vorrichtung zur Kantendickenmessung beim Aufbringen von Kantenkaschierung auf die Schmalseiten plattenförmiger Werkstücke
DE102015219257A1 (de) * 2015-10-06 2017-04-06 Homag Gmbh Bearbeitungsmaschine und Verfahren zur Bearbeitung von Werkstücken
DE102016211723A1 (de) * 2016-06-29 2018-01-04 Weeke Bohrsysteme Gmbh Bearbeitungsvorrichtung mit einer Lichtsignalanzeigevorrichtung und Verfahren
DE102017122701A1 (de) * 2017-09-29 2019-04-04 Homag Gmbh Beschichtungsvorrichtung sowie Beschichtungsverfahren
DE102017129916A1 (de) * 2017-12-14 2019-06-19 Homag Gmbh Bearbeitungsvorrichtung zum Bearbeiten einer Werkstückschmalseite sowie Verfahren
CN109436694B (zh) * 2018-11-20 2023-12-05 广州赛志系统科技有限公司 智能柔性封边线进料系统
DE102020103580A1 (de) 2020-02-12 2021-08-12 Homag Gmbh Verfahren und Vorrichtung zur Identifikation von Werkstücken
DE102022125511A1 (de) 2022-10-04 2024-04-04 Homag Gmbh Bearbeitungsvorrichtung sowie Verfahren zum Bearbeiten eines Werkstücks

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US5911302A (en) * 1996-11-29 1999-06-15 Cae Newnes Ltd. Circulating paddle board positioning apparatus
FI104239B (fi) * 1998-05-26 1999-12-15 Sunds Defibrator Panelhandling Menetelmä ja laitteisto levymäisen kappaleen jakamiseksi
JP2003341828A (ja) * 2002-05-27 2003-12-03 Shiraitekku:Kk 供給装置
EP2030725B1 (fr) 2007-09-03 2010-03-31 Homag Holzbearbeitungssysteme AG Dispositif et procédé destinés à aligner des pièces à usiner
WO2009112051A1 (fr) * 2008-03-12 2009-09-17 Schuler Automation Gmbh & Co. Kg Dispositif et procédé de positionnement de pièces en forme de plaques

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EP2308659A1 (fr) 2011-04-13
DE102009048442A1 (de) 2011-04-14

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