EP2030725B1 - 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
EP2030725B1
EP2030725B1 EP07017212A EP07017212A EP2030725B1 EP 2030725 B1 EP2030725 B1 EP 2030725B1 EP 07017212 A EP07017212 A EP 07017212A EP 07017212 A EP07017212 A EP 07017212A EP 2030725 B1 EP2030725 B1 EP 2030725B1
Authority
EP
European Patent Office
Prior art keywords
aligning
conveying device
travel
alignment
conveying
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.)
Active
Application number
EP07017212A
Other languages
German (de)
English (en)
Other versions
EP2030725A1 (fr
Inventor
Andreas Lorenz
Achim Gauss
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.)
Homag GmbH
Original Assignee
Homag Holzbearbeitungssysteme 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 Homag Holzbearbeitungssysteme GmbH filed Critical Homag Holzbearbeitungssysteme GmbH
Priority to PL07017212T priority Critical patent/PL2030725T3/pl
Priority to DE502007003320T priority patent/DE502007003320D1/de
Priority to EP07017212A priority patent/EP2030725B1/fr
Priority to ES07017212T priority patent/ES2342566T3/es
Publication of EP2030725A1 publication Critical patent/EP2030725A1/fr
Application granted granted Critical
Publication of EP2030725B1 publication Critical patent/EP2030725B1/fr
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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

Definitions

  • the invention relates to a device and a method for aligning workpieces, which are preferably at least partially made of wood, wood materials, plastic or the like, according to the preamble of claim 1.
  • Alignment stations of the type mentioned are used in the prior art to bring workpieces that are conveyed on a conveyor in a well-defined position. This ensures that the workpieces in a downstream processing station, such as a continuous saw or a Doppelendprofiler, are processed with high precision.
  • a generic alignment station has the Applicant sold under the name TAL 352. This is equipped with cameras to detect the position of the arranged on a conveyor workpieces when stopped conveyor. On the basis of the detection result, the workpieces are brought by two aligners in a desired position, in order to be subsequently promoted.
  • DE 39 14 640 A1 a transport device for plate-shaped workpieces, in which the workpieces are pulled by means of movable gripper against a stop bar.
  • the invention is based on the idea to further develop the device such that the conveyor does not necessarily have to be stopped when detecting and aligning the workpieces.
  • the invention provides that the alignment device has at least one alignment element, which is movable in the direction of passage at least within limits. In this way, the workpieces to be aligned can be conveyed even in the direction of passage even during the detection and alignment process, ideally with the same speed. As a result, the throughput of the device and a total system containing them increased drastically, without sacrificing the precision of the alignment must be taken into account.
  • the invention provides that the alignment device is set up to actuate the workpiece before the position is detected, in particular to grip it. This ensures that the position of the workpiece after its detection is not undesirably changed by the action of the alignment, which would make the detection result useless.
  • the at least one alignment element is movable transversely to the direction of passage, namely simultaneously to a movement of the at least one alignment element in the direction of passage.
  • the alignment elements may perform the alignment operation transverse to the direction of travel while moving in the direction of travel along with the workpieces to be aligned.
  • the at least one alignment element can take on a variety of forms and, in the structurally simplest case, be formed by at least one sliding element. According to one embodiment of the invention, however, it is provided that at least one alignment element is designed as a gripping element. In this way, the workpieces' can be guided especially safely.
  • the use of a gripping element allows the workpieces to be pushed not only in a first direction, but optionally also retracted in an opposite second direction, for example, to correct an error in a first alignment operation.
  • the use of a gripping element allows a safe transfer of the workpieces to downstream devices.
  • the number of alignment elements is not particularly limited in the present invention. According to one embodiment of the invention, however, it has proved to be advantageous that at least two alignment elements are provided which are movable independently of one another at least in the direction of passage.
  • the throughput of the device according to the invention can be further increased, for example by operating the independently movable alignment elements alternately. For example, in such alternate operation, a first (pair of) alignment member (s) may grip and align a workpiece during its travel motion while a second (pair of) alignment member (s) simultaneously provide a return stroke performs to take over the subsequent workpiece. As a result, the distance between the successive workpieces can be reduced, with a corresponding increase in the throughput.
  • the device according to the invention can be provided in the context of the invention to compensate only a transverse displacement of the workpieces on the conveyor.
  • at least one side of the conveyor at least two alignment elements are provided which are independently movable at least transversely to the direction of passage. In this way, the workpieces to be aligned can both be moved and rotated, whereby any occurring position errors can be corrected.
  • the device has a second conveying device downstream of the conveying device, wherein at least one aligning element can be moved in the direction of passage in at least sections in the region of the second conveying device.
  • the invention provides a method for the continuous alignment of workpieces using a device according to the invention, wherein the method is defined in claim 9 in more detail.
  • This method advantageously realizes the above-mentioned effects of the invention, namely that the throughput of the method or the device can be considerably increased by the continuous conveying of the workpieces - also during the detection or alignment.
  • the invention provides that the workpiece is actuated, in particular gripped, before the position is detected by the alignment device. This ensures that the position of the workpiece after its detection is not undesirably changed by the action of the alignment, which would make the detection result useless.
  • FIG Fig. 1 and 2 An apparatus 1 for aligning workpieces 2 according to the present invention is shown schematically in FIG Fig. 1 and 2 shown.
  • the device 1 is primarily used for conveying and aligning workpieces 2, which consist at least in sections of wood, wood materials, plastic or the like, as they are processed in the field of furniture or kitchen industry, but also in the field of flooring industry.
  • workpieces 2 consist at least in sections of wood, wood materials, plastic or the like, as they are processed in the field of furniture or kitchen industry, but also in the field of flooring industry.
  • other applications or types of work are conceivable within the scope of the present invention.
  • the device 1 has a conveyor 10 for conveying the workpieces 2 in a passage direction, the in Fig. 2 is indicated by arrows, which are in Fig. 2 extend from left to right.
  • the conveyor 10 may be configured in many different ways and comprises in the present embodiment, a plurality of belt conveyors 12. However, chains, sliding surfaces and other conveying elements may be used individually or in combination.
  • the device 1 has a detection device 20 for detecting a position of the conveyed on the conveyor 10 workpieces 2.
  • the detection device 20 in the present embodiment, two cameras 22, which are designed for example as digital or CCD cameras and with a control device not shown in detail are in communication.
  • the cameras 22 are each arranged on a portal 24, which extends transversely to the conveyor 10, so that the Cameras can detect the position of the workpieces 2 from directly above the conveyor 10.
  • the device 1 has an alignment device 30, which has two alignment elements 32, 34 in the present embodiment.
  • the alignment elements 32, 34 are configured in the present embodiment as gripping elements which have, for example, a forceps-like shape whose opening faces the workpieces 2 conveyed on the conveyor 10.
  • gripping elements which have, for example, a forceps-like shape whose opening faces the workpieces 2 conveyed on the conveyor 10.
  • suitable means for example top pressure device and / or vacuum device.
  • the alignment elements 32, 34 are arranged on a guide 36, along which they can be moved in the direction of passage, preferably independently of one another.
  • the alignment elements 32, 34 are arranged on the guide 36, that they are movable transversely to the passage direction, namely simultaneously to a movement of the alignment in the direction of travel and also independently.
  • the alignment elements 32, 34 are arranged transversely to the passage direction on not shown guides and positioned along this motor.
  • the alignment elements 32, 34 are also in communication with the control device not shown in detail, so that the movement operation of the alignment elements 32, 34 can be controlled longitudinally and transversely to the passage direction on the basis of the operation of the conveyor 10 and the detection result of the detection device 20.
  • a second conveyor 40 is provided which in Fig. 1 and Fig. 2 only partially and shown in broken lines. As in Fig. 1 is best seen, is the travel of the gripping elements 32 and 34 (which is defined by the guide 36) overlapping to the conveying path of the second conveyor 40 is arranged.
  • the aligned workpieces 2 are conveyed on the conveyor 10 in the direction of passage.
  • the alignment elements 32, 34 are placed on the guide 36 in a standby position and, as soon as the workpiece 2 to be aligned has reached a predetermined position, accelerates to the conveying speed of the workpiece 2. Then the gripping elements 32, 34 are moved transversely to the direction of passage and grasp the workpiece 2 to be aligned.
  • the workpiece 2 to be aligned is conveyed under the portals 24 in this state, and the cameras 22 detect the actual position of the workpiece 2 on the conveyor, for example by optical image acquisition and subsequent digital evaluation of the acquired image in the control device. If the actual position of the workpiece 2 deviates from the desired position, the alignment elements 32, 34 are moved transversely to the direction of passage under the control of the control device and the workpiece is thus brought into a desired position. Also during this process, the alignment elements 32, 34 move in the direction of passage, and depending on the application, if necessary, can also be used with a reduced conveying speed.
  • the workpiece aligned in this way is transferred from the alignment elements 32, 34 to the downstream, second conveyor 40, wherein the gripping elements 32, 34 release the workpiece 2 only when the second conveyor 40 has gripped the workpiece safely, so as to ensure that the achieved target positioning is maintained.
  • a desired processing can now be carried out.
  • At least one alignment element is provided on opposite sides of the conveyor 10 in each case.
  • guide 36 it would be possible, in addition to the in Fig. 2 shown guide 36 to provide a further guide, which is arranged on the opposite side of the conveyor 10.
  • This additional guide can accommodate further alignment elements, which operate in an analogous manner to the alignment elements 32, 34 described above, wherein also in this case an alternating operation between the two opposite sides is advantageous.

Landscapes

  • 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 (10)

  1. Dispositif (1), pour orienter des pièces d'oeuvre (2) composées, de préférence, au moins par tronçons, en bois, matériaux ligneux, matière synthétique ou analogue, comprenant :
    un dispositif de transport (10), pour transporter les pièces d'oeuvre (2) dans une direction de passage ;
    un dispositif de commande ;
    un dispositif de détection (20) électronique, en particulier optique, pour détecter une position des pièces d'oeuvre (2) transportées sur le dispositif de transport (10), et
    un dispositif d'orientation (30), pour déplacer et orienter les pièces d'oeuvre (2) transportées sur le dispositif de transport (10), d'après un résultat de détection du dispositif de détection (20),
    caractérisé en ce que
    le dispositif d'orientation (30) présente au moins un élément d'orientation (32, 34), déplaçable, au moins dans certaines limites, dans la direction de passage, et
    le dispositif de commande commandant le dispositif d'orientation de manière que le dispositif d'orientation actionne, en particulier saisisse, la pièce d'oeuvre, déjà avant la détection de la position.
  2. Dispositif selon la revendication 1, caractérisé en ce que le au moins un élément d'orientation (32, 34) est déplaçable transversalement à la direction de passage, et précisément simultanément à un déplacement du au moins un élément d'orientation (32, 34) dans la direction de passage.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le au moins un élément d'orientation (32, 34) est réalisé en tant qu'élément préhenseur.
  4. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'au moins un élément d'orientation (32, 34) est réalisé en tant qu'élément pousseur.
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il présente au moins deux éléments d'orientation (32, 34), déplaçables indépendamment l'un de l'autre, au moins dans la direction de passage.
  6. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'au moins un élément d'orientation est respectivement prévu sur des côtés opposés du dispositif de transport (10).
  7. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'au moins deux éléments d'orientation (32, 34), déplaçables indépendamment l'un de l'autre, de préférence au moins transversalement à la direction de passage, sont prévu sur au moins un côté du dispositif de transport (10).
  8. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il présente en outre un deuxième dispositif de transport (40), monté en aval du dispositif de transport (10), au moins un élément d'orientation (34) étant déplaçable, également au moins par tronçons, dans la direction de passage, dans la zone du deuxième dispositif de transport (40).
  9. Procédé pour orienter des pièces d'oeuvre (2), faisant utilisation d'un dispositif (1) selon l'une des revendications précédentes, comprenant les étapes consistant à :
    transporter une pièce d'oeuvre (2) au moyen du dispositif de transport (10),
    détecter une position de la pièce d'oeuvre (2) transportée sur le dispositif de transport (10),
    déplacer et orienter la pièce d'oeuvre (2) transportée sur le dispositif de transport (10), d'après le résultat de détection du dispositif de détection (20),
    la détection et/ou le déplacement ou l'orientation étant effectués pendant que la pièce d'oeuvre (2) est transportée dans la direction de passage,
    la pièce d'oeuvre (2) étant actionnée, en particulier saisie, par le dispositif d'orientation (30), déjà avant la détection de la position.
  10. Procédé selon la revendication 9, caractérisé en ce que la pièce d'oeuvre (2) n'est libérée du dispositif d'orientation (30), que lorsque la pièce d'oeuvre (2) a été transférée à un deuxième dispositif de transport (40), monté en aval.
EP07017212A 2007-09-03 2007-09-03 Dispositif et procédé destinés à aligner des pièces à usiner Active EP2030725B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL07017212T PL2030725T3 (pl) 2007-09-03 2007-09-03 Urządzenie i sposób do ustawiania przedmiotów obrabianych
DE502007003320T DE502007003320D1 (de) 2007-09-03 2007-09-03 Vorrichtung und Verfahren zum Ausrichten von Werkstücken
EP07017212A EP2030725B1 (fr) 2007-09-03 2007-09-03 Dispositif et procédé destinés à aligner des pièces à usiner
ES07017212T ES2342566T3 (es) 2007-09-03 2007-09-03 Dispositivo y procedimiento para alinear piezas.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07017212A EP2030725B1 (fr) 2007-09-03 2007-09-03 Dispositif et procédé destinés à aligner des pièces à usiner

Publications (2)

Publication Number Publication Date
EP2030725A1 EP2030725A1 (fr) 2009-03-04
EP2030725B1 true EP2030725B1 (fr) 2010-03-31

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ID=38937582

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Application Number Title Priority Date Filing Date
EP07017212A Active EP2030725B1 (fr) 2007-09-03 2007-09-03 Dispositif et procédé destinés à aligner des pièces à usiner

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EP (1) EP2030725B1 (fr)
DE (1) DE502007003320D1 (fr)
ES (1) ES2342566T3 (fr)
PL (1) PL2030725T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009048442A1 (de) 2009-10-07 2011-04-14 Homag Holzbearbeitungssysteme Ag Vorrichtung und Verfahren zum Ausrichten von Werkstücken

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3914640C2 (de) 1989-05-03 1994-10-06 Fritz Wilmsmeyer Gmbh & Co Kg Vorrichtung zum Ausrichten von auf einer Transportstrecke geförderten plattenförmigen Werkstücken gleicher oder unterschiedlicher Formatgröße
DE9316946U1 (de) * 1993-11-05 1994-02-24 IMA-Norte Maschinenfabriken Klessmann GmbH, 33334 Gütersloh Bearbeitungszentrum zum spangebenden Bearbeiten von plattenförmigen Werkstücken
DE10254504B4 (de) * 2002-11-22 2006-02-16 Tünkers Maschinenbau Gmbh Verfahren zum Kaschieren von zwei oder mehreren gleichen oder unterschiedlichen Bögen, und Vorrichtung zum Durchführen des Verfahrens

Also Published As

Publication number Publication date
DE502007003320D1 (de) 2010-05-12
PL2030725T3 (pl) 2010-08-31
EP2030725A1 (fr) 2009-03-04
ES2342566T3 (es) 2010-07-08

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