EP3397435A1 - Procédé et dispositif de placement de feuilles de placage - Google Patents

Procédé et dispositif de placement de feuilles de placage

Info

Publication number
EP3397435A1
EP3397435A1 EP16805790.9A EP16805790A EP3397435A1 EP 3397435 A1 EP3397435 A1 EP 3397435A1 EP 16805790 A EP16805790 A EP 16805790A EP 3397435 A1 EP3397435 A1 EP 3397435A1
Authority
EP
European Patent Office
Prior art keywords
veneer
manipulator
conveyor
manipulators
strand
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.)
Withdrawn
Application number
EP16805790.9A
Other languages
German (de)
English (en)
Inventor
Josef Hanses
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.)
Hanses Sagewerkstechnik & Co KG GmbH
Original Assignee
Hanses Sagewerkstechnik & Co KG 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 Hanses Sagewerkstechnik & Co KG GmbH filed Critical Hanses Sagewerkstechnik & Co KG GmbH
Publication of EP3397435A1 publication Critical patent/EP3397435A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D3/00—Veneer presses; Press plates; Plywood presses
    • B27D3/04—Veneer presses; Press plates; Plywood presses with endless arrangement of moving press plates, belts, or the like

Definitions

  • the invention relates to a method for laying veneer sheets in the production of laminated veneer lumber, in which a strand of glued together veneer panels in several layers is fed to a press on a conveyor and with the help of at least two manipulators further veneer sheets are applied to the strand each manipulator is associated with a work area for applying the veneer sheets to the strand and the working areas of the manipulators are arranged in sequence along the conveyor.
  • an operating mode in which one of the manipulators is used to supply a veneer sheet to a storage location in the working area of another manipulator. If for any reason an interruption of operation occurs at one of the manipulators, then in the operating mode according to the invention one of the other manipulators can take over the task of this manipulator, so that the conveyor and the press do not need to be stopped.
  • An apparatus for carrying out the method is the subject of the independent device claim.
  • the supply of the veneer board to the storage location in the storage area of the other manipulator takes place in that the manipulator that feeds the veneer panel is moved beyond its regular working area out into the working area of the other manipulator and there applies the veneer board directly to the strand.
  • the veneer board presupposes that the manipulator in which the business interruption occurs is itself still functional and the interruption of service is only achieved by the fact that the supply of veneer sheets to this manipulator falters.
  • the invention makes it possible to prioritize the location of deposition located furthest downstream in the direction of conveyance of the strand to ensure that the full number of veneer layers in the strand is achieved before the strand enters the press.
  • the system is preferably driven so that the manipulators do not work at their capacity limit. That is, the speed or timing of the conveyor is adjusted to provide more time for each manipulator to deposit a veneer panel than is at least needed for a full stack cycle. After a business interruption then the working cycle of the manipulators can be temporarily increased to catch up the backlog. In this way, despite occasional business interruptions to individual manipulators a stable and uninterrupted production process allows.
  • the invention now makes it possible to use the already present on the conveyor manipulators for sorting out defective veneer sheets, since the time required for this process does not lead to an interruption of the operation.
  • veneer sheets of particularly high quality can be temporarily sorted out by means of the manipulators and kept in a clipboard, so that they can be used for the bottom and top cover layers of the veneer strand, so that the laminated veneer lumber obtains a perfect external surface.
  • FIG. 1 is a plan view of a laying device according to the invention.
  • Fig. 2 is a side view of the device of Fig. 1;
  • Fig. 3 is an end view of the device from the direction of the arrows III-III in
  • Fig. 4 is a side view of a portion of the device during a regular laying operation.
  • Fig. 5 is a side view of the part of the device during a laying operation in an operating mode according to the invention.
  • a conveyor 10 is shown in plan view, which serves an endless strand 12 glued and in several layers successive and stacked veneer sheets 14 continuously or intermittently fed to a press 16 in which the veneer layers pressed veneer lumber become.
  • the conveyor 10 is overbuilt by a frame 18 in which two portal-like manipulators 20, 22 on rails 24 in the longitudinal direction of the conveyor 10 are movable. Each manipulator is assigned a feed line 26 or 28, on which the veneer sheets 14 are fed by means of a conveyor or destacker, not shown.
  • Each feed line 26, 28 has a conveyor 30 to which the veneer sheets are fed from the lower edge in Fig. 1 and on which they are transported to a respective picking 32, where they are taken over by the respective manipulator 20 and 22 respectively.
  • the pick-up point is designed so that the veneers are mechanically aligned on the front and sides.
  • a defect scanner 34 is arranged above each conveyor 30 on the input side and a movable glue application device 36 further downstream.
  • the conveyors 30 and the pick-up points 32 and a storage shelf 38 are mounted on a common frame 40 and are located approximately at the same height with the conveyor 12. In the storage rack, the veneer sheets are stored individually to prevent sticking of the veneers together.
  • the shelf is designed like a drawer system so that each shelf can be loaded and unloaded at random.
  • the two manipulators 20 and 22 have the same structure and each have a cross member 42 which extends transversely across the conveyor 12 and is held with their opposite ends movable in the rails 24.
  • a manipulator head 44 can be moved between a position above the conveyor 10 and a position above the collection points 32.
  • each manipulator head 44 carries at the bottom a guide rail 46 which extends in the longitudinal direction of the conveyor 10 and on which a rotor 48 is movable.
  • a suction gripper 50 is rotatably and height-adjustable held on the rotor 48 and has suction cups with which a veneer panel 14 can be raised and held and placed in a desired position again.
  • the traverses 42 of the two manipulators 20 and 22 are guided in a common guide track 52 of the rails 24.
  • the device In normal operation, the device operates as follows.
  • Veneer panels 14 are supplied on the two parallel feed lines 26, 28 to the conveyors 30 and are oriented so that their longitudinal direction is perpendicular to the transport direction of the conveyor 10. With the defect scanners 34, the veneer sheets are optoelectronically scanned, and the positions and shapes of the voids relative to the outlines of the veneer sheets are stored electronically.
  • the veneer sheets are glued.
  • the glue can be applied in traces or as a film.
  • the suction cups of the suction pad 50 engage on the glued veneer surface.
  • a large number of suction nozzles with low flow velocity are used.
  • An ejector 52 (Fig. 4) on the underside of the suction pad ensures that the veneer board when placed on the book dissolves without delay from the vacuum and is stored without a crate.
  • the Abdrückvorraum consists of several pressure bars which are held below the suction pad pivotally between the suction cups. When picking up a veneer sheet, the vacuum gripper is lowered so that the free end of the pressure bar lays on the veneer sheet and is pivoted upwardly against at least one row of suction cups. The vacuum is switched on and the pressure bar is held by the suction cups in the raised position, while other suction cups suck the veneer board.
  • a glued veneer panel When a glued veneer panel has reached the picking location 32, it is picked up there by the associated manipulator 20 or 22.
  • the suction gripper 50 is lowered onto the veneer board 14 and lifted again with the veneer board and then travels along the traverse 42 to a position above the conveyor 10.
  • the suction gripper 50 is thereby rotated by 90 ° about a vertical axis, so that the longitudinal direction the veneer board is now parallel to the transport direction of the conveyor 10.
  • the manipulator is then moved on the rails 24 in a position in which the leading edge of the veneer panel with the trailing edge of a previously in the same veneer layer occasional ten veneer board of the strand 12 is flush. In this position, the veneer board is then placed on the conveyor with the suction gripper 50 or on the veneer layer already present on the conveyor.
  • the exact positions of the reference edges of the veneer sheets have already been recorded on the pick-up point and are tracked electronically by means of the movements of the conveyor and the manipulators.
  • the manipulators may travel in synchronism with the conveyor during the laying operation.
  • the manipulator 20 moves during the laying process in the longitudinal direction of the conveyor 10 in a work area A, the at least the pickup position in which the veneer panels 12 are taken over by the picking 32 of the feed line 26 and includes the storage location on the veneer board is placed on the continuously moving strand 12. This storage location is located farther downstream, the higher the veneer position in which the veneer sheet is deposited.
  • the manipulator 22 moves in a work area B between the pickup position in which he takes over the veneer board from the pickup point 32 of the feed line 28, and the respective storage location.
  • the lower half of the veneer layers of the strand 12 consists of so-called half books, i. staggered superimposed veneer sheets, which are placed with the manipulator 20.
  • the manipulator sets 22 half-books, which form the upper half of the veneer layers and to complete the strand 12.
  • the pressure bar of the ejector 52 is just in the lowered position to deposit a veneer sheet.
  • the laid with the manipulator 20 veneer sheets 14 are shown hatched in Fig. 4.
  • the laying process may be delayed slightly. However, this delay can be made up by the fact that thereafter the cycle in which the manipulators 20 and 22 deposit the veneer sheets is somewhat accelerated. It must be It must be ensured that the strand 12 is completed at the furthest downstream (closest to the press 16) storage location to the top layer before the strand enters the press. This can be achieved by temporarily switching to a special operating mode in which the work of the manipulator 22 responsible for the last storage location is supported by the manipulator 20.
  • FIG. 1 This mode of operation is shown in FIG.
  • the manipulator 22 has just deposited a veneer sheet 14a at the downstream end of the strand 12, and its suction gripper 50, shown in phantom in Fig. 5, is in a position above the picking location 32 of the infeed line 28. Meanwhile, the manipulator 20 places another veneer board 14b (hatched), which he has picked up from the loading line 26, in the same storage position (apart from the small offset of the joints) on the veneer panel 14a. If necessary, these operations can be repeated several times, so that the veneer sheets are laid alternately with the two manipulators 20 and 22. In this way, the strand 12 can be completed in time before reaching the press.
  • the operating mode shown in Fig. 5 can also be used in other situations, for example, when the supply of veneer sheets on the downstream feed line 28 is temporarily stagnant and therefore the manipulator 22 could not continue its operation. Conversely, if there is a stoppage of operation in the upstream manipulator 20, it is also possible for the manipulator 22 to perform tasks that would actually be provided for the manipulator 20.
  • the additional flexibility that is achieved by the method according to the invention can be used in a variety of ways. For example, if the passage of a freshly fed veneer panel through the defect scanner 34 shows that this panel is overly damaged, veneering paneling may be omitted and one of the manipulators 20, 22 may be used to move that veneer panel from the picking location 32 into the storage shelf 38 from which the damaged panel can then be manually removed while continuing operation of the device with freshly supplied veneer sheets.
  • the storage shelf 38 can also be used to provide particularly high-quality, defect-free veneer sheets which are suitable for the upper and lower cover layers of the strand 12.
  • the manipulator 20 retrieves a defect-free veneer sheet from the shelf shelf 38 and places it on the conveyor 10. If the uppermost layer of a book is placed with the manipulator 22, then the manipulator can also get a defect-free veneer board from the storage rack 38. If during the feeding of new veneer sheets on the feed lines 26, 28 it is recognized that one of these sheets is free of defects and therefore suitable for a cover layer, then it is also possible to place this sheet on one of the manipulators 20, 22 on the clipboard 38, until it can then be used for a top layer.
  • the manipulators 20, 22 can also be moved independently of each other in separate guide stretcher, so that they can completely exchange their positions along the conveyor 10.
  • the veneer sheets on the infeed lines 26, 28 may already be fed in the orientation they have on the conveyor 10.
  • veneer panels with different dimensions can be combined with each other in any arrangement.
  • three or more parallel feed lines may also be provided.
  • the associated manipulators should then each be such that they can also serve the work areas of the or the respectively adjacent manipulators. It is also possible to provide an additional loading line specially designed for feeding defect-free veneer fine for the top layers serves. No special manipulator needs to be present for this feed line, but the manipulators of the other feed lines are used to pick up the defect-free sheets from this additional feed line as needed.
  • the veneer sheets are already glued in the feed lines 26, 28 before they are converted to the conveyor 10, it is also possible in another embodiment, to glue the veneer sheets only on the conveyor 10, in which case one or several gluing devices can be moved independently of the manipulators above the conveyor 10.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Abstract

L'invention concerne un procédé de placement de feuilles de placage (14a, 14b) lors de la fabrication de lamibois, procédé selon lequel une ligne (12) de feuilles de placage encollées en appui les unes contre les autres en plusieurs positions sont acheminées sur un convoyeur (10) jusqu'à une presse (16) et, à l'aide d'au moins deux manipulateurs (20, 22), d'autres feuilles de placage sont appliquées contre la ligne (12), une zone de travail (A, B) pour l'application des feuilles de placage contre la ligne étant associée à chaque manipulateur (20, 22) et les zones de travail des manipulateurs étant disposées les unes après les autres le long du convoyeur (10). Le procédé est caractérisé par un mode de fonctionnement dans lequel l'un des manipulateurs (20) est utilisé pour acheminer une feuille de placage (14b) jusqu'à un emplacement de dépôt dans la zone de travail (B) de l'autre manipulateur (22).
EP16805790.9A 2015-12-30 2016-12-01 Procédé et dispositif de placement de feuilles de placage Withdrawn EP3397435A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015122943.9A DE102015122943A1 (de) 2015-12-30 2015-12-30 Verfahren und Vorrichtung zum Legen von Furniertafeln
PCT/EP2016/079502 WO2017114632A1 (fr) 2015-12-30 2016-12-01 Procédé et dispositif de placement de feuilles de placage

Publications (1)

Publication Number Publication Date
EP3397435A1 true EP3397435A1 (fr) 2018-11-07

Family

ID=57482400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16805790.9A Withdrawn EP3397435A1 (fr) 2015-12-30 2016-12-01 Procédé et dispositif de placement de feuilles de placage

Country Status (4)

Country Link
EP (1) EP3397435A1 (fr)
CA (1) CA3007862A1 (fr)
DE (1) DE102015122943A1 (fr)
WO (1) WO2017114632A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108098942A (zh) * 2018-02-08 2018-06-01 王海彬 一种新型的具有涂胶功能的压板机
CN111844274B (zh) * 2020-07-25 2021-09-07 临沂名杉木业有限公司 一种自动化涂胶系统

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004001308U1 (de) * 2004-01-28 2004-04-08 Mba Automation Gmbh Furnierbeschichtungsvorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1481361B2 (de) * 1967-02-10 1973-01-04 C. Mueller Kg Maschinenfabrik Und Eisengiesserei, 3451 Forst Vorrichtung zum gruppenweisen Sammeln und Ablegen von kurzen Furnierstreifen od.dgl. auf einen Stapeltisch
DE19627024B4 (de) * 1996-07-04 2007-08-02 Dieffenbacher Gmbh + Co. Kg Verfahren und Anlage zum kontinuierlichen Zusammenlegen und Verleimen von Furniertafeln zu Furnierschichtplatten
DE29814245U1 (de) * 1998-08-08 1999-12-30 Dieffenbacher Gmbh Maschf Anlage zur Herstellung von endlosen Furnierschichtplatten
US6865800B2 (en) * 2003-01-29 2005-03-15 Corvallis Tool Co. Production of laminated veneer support beams
DE102008027706A1 (de) 2008-06-11 2009-12-17 Dieffenbacher Gmbh + Co. Kg Legestation und Industrieroboter zum Legen von Furnieren und/oder Folien zu Schichtpaketen oder einem endlosen Strang im Zuge der Herstellung von Furnierschicht- oder Sperrholzplatten
DE102009021368A1 (de) * 2009-05-17 2010-11-18 Dieffenbacher Maschinenfabrik Gmbh Verfahren zur Herstellung von Furnierschichtholz und eine Anlage zur Durchführung des Verfahrens
DE102010049128A1 (de) * 2010-10-22 2012-04-26 Dieffenbacher Maschinenfabrik Gmbh Verfahren und Stranglegestation zur Herstellung eines Furnierstranges im Zuge der Herstellung von Furnierschichtholz
DE102015100033A1 (de) * 2015-01-05 2016-07-07 Ralf Pollmeier Verfahren zur Herstellung von Furnierschichtholz

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004001308U1 (de) * 2004-01-28 2004-04-08 Mba Automation Gmbh Furnierbeschichtungsvorrichtung

Also Published As

Publication number Publication date
CA3007862A1 (fr) 2017-07-06
DE102015122943A1 (de) 2017-07-06
WO2017114632A1 (fr) 2017-07-06

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