WO2016142498A1 - Procédé et système d'empilage de feuilles de placage et/ou de dépilage d'une pile de paquets de feuilles de placage - Google Patents

Procédé et système d'empilage de feuilles de placage et/ou de dépilage d'une pile de paquets de feuilles de placage Download PDF

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Publication number
WO2016142498A1
WO2016142498A1 PCT/EP2016/055210 EP2016055210W WO2016142498A1 WO 2016142498 A1 WO2016142498 A1 WO 2016142498A1 EP 2016055210 W EP2016055210 W EP 2016055210W WO 2016142498 A1 WO2016142498 A1 WO 2016142498A1
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Prior art keywords
veneer
parting plane
marking
stacking
veneers
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PCT/EP2016/055210
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German (de)
English (en)
Inventor
Detlef Kroll
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Dieffenbacher Maschinenfabrik Gmbh
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Publication of WO2016142498A1 publication Critical patent/WO2016142498A1/fr

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    • 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

Definitions

  • the invention relates to a method for stacking veneers and / or for destacking a stack of Funiervolen in the course of the production of material panels of veneers according to the preamble of claim 1.
  • the invention further relates to a plant for stacking veneers and / or for stacking a stack of Funiermelen in the course of the production of material panels of veneers according to the preamble of Claim 10.
  • so-called plywood wood to wood panels has long been known prior art.
  • Abstracted are several layers of glued wood, preferably boards or veneers superimposed and pressed.
  • the two types of veneer plywood and veneer plywood differ in that the veneer plywood the alignment of the individual layers offset from each other, preferably crosswise, are arranged so that you get the same tensile and bending strengths in all orientations.
  • the crosswise gluing of the veneers ensures stability and stability, because the wood is limited in its natural properties of swelling and shrinkage, especially in temperature differences.
  • the invention understands material boards in particular laminated veneer lumber (meaning preferably all ply woods) which has a variety of uses. It can be configured and / or further processed after or during manufacture by means of simple adjustments.
  • newly developed glues preferably allow the veneers to be aligned in parallel, so that the production of laminated veneer lumber becomes more important.
  • Veneers are understood by a specialist to be one to several millimeters thick sheets of wood. These can be made of different woods and using different techniques, usually adapted to the present woods. The most widely used manufacturing processes are the knife and the peeling process.
  • a veneer which is preferably used in timber construction, consists of about 3 mm thick peeled veneer softwood and is pressed with phenolic resin to plates or carriers to beams.
  • Compression takes place either intermittently in floor presses or continuously in double belt presses, which are also already known and introduced in the woodworking industry.
  • the veneers are delivered in stacks on pallets, fed to a gluing device in a separating station and then combined to form veneer packages.
  • Merging can be done in several ways, for example, individually and intermittently with lifting devices as described in US 4,797,169 A, or in a semi-continuous manner with conveyor belts described in US Pat DE 196 27 024 A1.
  • This state of the art has in common that a strand is to be laid from the veneers, which is either sawn or fed as a continuous strand of a press.
  • awkward ramps are applied to the strand, which are arranged either rising in or against the production direction in order to achieve a continuous connection of the strand through the steps.
  • the layered veneers are usually glued veneers as intermediate layers and a non-glued veneer as a topcoat and are still called veneer packages.
  • the layered veneers, or veneer packages can then be pre-compressed individually or in turn stacked in a stack in a pre-press.
  • the pre-press is usually designed only as a pure printing press and does not introduce heat into the veneers.
  • the parting line is typically characterized in that two unsized surfaces on veneers are superimposed or arranged adjacent to each other.
  • tools are now attached to the parting plane by means of a manual operation in order to separate the veneer packages again after the pre-press.
  • This manual operation is time consuming and subject to human error, especially in the faulty attachment of the cutting tool, which leads to more waste.
  • the separation of the pre-pressed stack is necessary because after the pre-pressing the veneer packages have a lower height and the hot presses in single or multi-day execution easier with the veneer package can be fed manually. In the production of multi-ply veneer layer boards, it may happen that a veneer package can only be pre-pressed into the press nip of a press.
  • the invention has for its object to provide a method and a system with which it is possible to stack from veneers or already created veneer packages in a simple manner that the separation of the veneer packages of the stack simplified and above all process-reliable respectively reproducible performed can. This is especially true after passing the stack through a pre-press. In an extension of the task, it should be possible to divide a stack of veneer packages after H relieverpressung easier in material plates.
  • the method for stacking veneers to veneer packages and / or for unstacking a stack of veneer packages, in the course of the production of material boards from veneer packages in a press apply.
  • the veneer packages are made of several layers of single or more veneers consist respectively compiled and form a parting line between the veneer packages, in particular by the absence of a connecting agent such as glue and / or a release layer or a release agent.
  • the object of the invention for the method is achieved in that during the stacking of the veneer packages, the parting line between the veneer packages is marked with a mark and / or during the destacking the parting line is detected by means of a mark on or between the veneer packages and by means of a tool and / or an automated device at least one veneer package is separated from the stack.
  • the production of the veneer packages can be carried out separately from the stacking process of the veneer packages or together.
  • a device may be arranged which creates a veneer package from glued and unembellished veneers and subsequently a device which forms a stack of veneer packages from the produced veneer packages in which the parting plane is formed as described or marked accordingly.
  • the veneer packages can also be created in one device, for example by supplying the glued and unembellished (preferably marked) veneers to a device, which then forms a stack of veneer packages from these.
  • the marking of the parting plane is or is attached to the narrow side of at least one adjacent veneer to the parting plane and / or the marking of the parting plane is detected by marking a narrow side of an adjacent veneer.
  • a marking may be unevenness on the narrow sides, an embossing or other suitable color markings on one or more veneers.
  • the narrow sides of the veneer layers lying to the parting plane can have different colors or markings. These can obviously already be installed before the stacking of the veneer packages or the stack of veneer packages. For example, it would be conceivable to mark the top layer veneers (non-glued) on one side in color or embossing.
  • the worker or device When stacking, the worker or device would recognize that the parting plane is located above the marked topping veneer and, accordingly, use the tool or device to separate the veneer bundles.
  • the narrow sides of the glued veneers could have a different mark or color than the top layer veneers, so that the parting line would be recognized even easier.
  • At least one veneer adjacent to the parting plane can be staggered and / or a veneer adjacent to the parting plane can be recognized as a marking of the parting plane.
  • Adjacent means in this context that at least one veneer adjacent to the dividing plane, ie in each case a cover and a floor veneer of two adjacent veneer packages have different colors or are marked differently.
  • the whole veneer package is stacked or created staggered to the next veneer package.
  • a differently sized veneer may be arranged adjacent to the marking of the parting plane and / or a different sized veneer lying adjacent to the parting plane may be recognized as the marking of the parting plane.
  • the teaching of the invention means that at least one veneer of the top layer and / or the bottom layer, adjacent to the parting plane, has a different size than at least one further veneer.
  • the device for stacking engages in the gap between the veneers and lifts or peels off the veneer package.
  • the device may engage the veneer veneer and lift the veneer package with the veneer or separate the veneer package from the veneer of greater dimension.
  • a release agent between the veneer packages and / or recognized during stacking can be arranged as the marking of the parting line, a release agent between the veneer packages and / or recognized during stacking.
  • a release agent may be a film, a paper, a package carrier, a sheet, a release veneer (preferably of inferior quality), or the like.
  • Particularly preferred package carriers can be arranged as a release agent in the stack, so that the package carriers are not only used as a carrier of the package in stacking but are stacked arranged as a release agent in the stack.
  • the package carriers are substantially larger than the format of the stack of veneers, so that they can be handled easily automated.
  • a release agent and a compression means are arranged in the stack that is already suitable by its high weight, a veneer package or suppress the stack of veneers or even pre-press.
  • These compression means can also act as a release agent and be marked or recognizable.
  • This press plates or other suitable release agent can also be arranged on both sides of a veneer package and thus form the separation plane between them.
  • the advantage here would lie in the simpler automation, since the device for destacking targeted and without injuring the veneer can enter between the press plates to separate the veneer packages from each other. This is particularly advantageous for very high-quality surface veneers.
  • the release agent can also be used as a carrier for the veneer package when destacking.
  • the veneer package can be lifted off the release agent during stacking.
  • a plant, from which the invention proceeds, is suitable for producing a material panel from a veneer package, and comprises a stacking device for producing a stack of individual veneers or veneer packages and / or a stacking device for a stack consisting of a plurality of veneer packages and a press, in the at least one veneer package can be pressed to a material plate, wherein the veneer packages consist of several layers of single or more veneers and between the veneer packages a parting plane is formed.
  • the stacking device is suitable during the stacking of the veneer packages to make the parting line between the veneer packages with a mark and / or the stacking device suitable for detecting the parting line by means of a mark on or between the veneer packages and a tool and / or an automated device for separating at least one veneer stack from the stack in the stacking device is arranged.
  • the ability to place a mark on or in the parting plane between the veneer packages can be accomplished in several ways by the method or apparatus. According to the teachings of the invention, it would preferably be possible to attach the markers during stacking on or in the parting plane, preferably by means of a coloring and / or embossing device. Alternatively, however, it can also be provided that different veneers are stacked at the position provided for this purpose. For this purpose, for example, the adjoining veneers to the parting plane may be previously provided with a color marking, have an embossing or be introduced from another stack of veneers of different sizes in the stack to be produced.
  • the stacking device is suitable as marking the parting plane veneers with a mark on the narrow side adjacent to the parting plane and / or the stacking device is suitable to recognize the parting line based on the marking of a narrow side of an adjacent veneer.
  • the stacking device is suitable for stacking at least one veneer adjacent to the parting plane and / or the stacking device is suitable for recognizing a veneer adjacent to the parting plane as the marking of the parting plane.
  • the stacking device is suitable for marking the parting plane adjacent to arrange a different sized veneer and / or the stacking is suitable adjacent to the parting plane lying differently sized veneer as marking the parting plane to recognize.
  • a different sized veneer means a veneer that has at least on a narrow side or on all narrow sides of smaller or larger dimensions than the not adjacent to the parting plane veneers.
  • the stacking device when using a stack with at least one veneer of lesser dimension than the other veneers, be capable of positioning the tool or device in the gap between the veneers and lifting or peeling the veneer package.
  • the device in the stacking device is adapted to attack the serving as a marker veneer and lift the veneer package with the veneer or separate the veneer package from the veneer with larger dimension.
  • the stacking device is suitable for marking the parting line to arrange a release agent between the veneer packages and / or the stacking device is suitable to detect the position of the release agent and to control the device accordingly.
  • the release agent can be used with appropriate design as a carrier for the veneer package.
  • the stacking device is suitable for lifting the veneer package from the release agent when destacking.
  • powder or other suitable material such as paper or the like is arranged in the parting plane, which prevents glue from inadvertently passing between the top or bottom veneer and contaminating the parting plane or adjacent veneers Adhesive joins separating plane. This would make the stacking process difficult and lead to unsightly caking or splintering of veneers in a veneer package.
  • FIG. 1 shows a schematic structure of a system from the stacking device for veneers or veneer packages and a stacking device of veneer packages in front of a press for the production of the material plates
  • FIG. 2 shows a schematic structure of an alternative plant from the stacking device for veneers or the veneer packages with a direct compression in a press and a stacking device of the stack of compressed material plates
  • FIG. 3 shows the illustration of a marking of the parting plane with staggered veneer packets relative to one another
  • FIG. 4 shows the illustration of a marking of the parting plane by means of a larger veneer adjacent to the parting line
  • FIG. 5 shows the illustration of a marking of the parting plane by means of a smaller veneer adjacent to the parting plane
  • Figure 6 shows the representation of a marking of the parting plane by means of an inserted in the parting line release agent, preferably larger than the adjacent veneers and
  • Figure 7 shows the representation of the individual layers of a veneer package consisting of veneers and a cover and a floor veneer.
  • FIG. 1 shows a schematic structure of a system starting from the stacking device 14 for veneers 4 or veneer packets 2 to form a stack 1 and a stacking device 15 for stacking the veneer packets 2 from the stack 1 in front of a press 3 for producing the material plates from the veneer packets 2.
  • the veneers 4 (glued or non-glued), which have already been stated above, are combined to make veneer packages 2, the top veneer 17 generally being un-glued.
  • the compilation can be done in a separate device or as here in the embodiment directly in a stacking device 14, wherein also in the stacking device 14, the process of creating a veneer package 2 separated from the veneers 4 or performed simultaneously with the production of a stack 1 of veneer packages 2 can.
  • the stack 1 can then be compacted by means of a pre-press (schematically by the double arrow).
  • the stacking of a stack 1 may have multiple causes, including, for example, transportation to another warehouse or factory. It may also happen that instead of a pre-press only a heavy weight is placed on the stack or even stack 1 are created.
  • the stack 1 is usually destacked to veneer packages before a press 3. This can be done manually or automatically with a stacking device 15.
  • the stacking device 15 can in this sense but also be a device which is arranged semi-automatically, for example, thus has an operator who controls the device so that the stacking can be performed.
  • Common to all devices or human labor is the problem of recognizing the parting plane between the veneer packages 2 and lifting or separating one or more veneer packages 2 from the stack 1.
  • the stack 1 has corresponding markings, preferably in the region of the parting plane 5, or there are even distinct release agents in the parting plane which indicate this.
  • veneer packages 2 are pressed in a press 3 to material plates 10. It should be noted that it is also possible, depending on the thickness of the material plates, to press together two or more veneer packages 2, which then form a material plate assembly 11, which in turn must be separated from each other so that the material plates 10 can be used.
  • Figure 2 shows in this context a schematic structure of an alternative plant from the stacking device 14 for veneers 4 and the veneer packages 2 with a direct compression of a stack 1 in a press 3 and a stacking device 15 of the stack of compressed material plates 10, the above-mentioned material plate composite 11 training.
  • FIG. 3 shows the illustration of a marking of the parting plane 5 of a stack 1 by the veneer packets 2 arranged offset from each other.
  • the device 6 or a tool not shown in detail sets at the parting plane 5 between two veneer packages 2 and separates them from each other.
  • the person skilled in the art will provide, if necessary, for replacement of human labor automatable devices 6, which not only take over the separation process at the parting plane 5, but also ensure immediate receipt and removal of the veneer package 2. Again, the possibility of doing the destacking so that several veneer packages 2 are taken from the stack 1 at a time, as they are either pressed together or further separated from each other in a subsequent device.
  • FIG. 4 shows a marking of the parting plane 5 by means of a larger veneer 12, which is arranged adjacent to the parting plane 5.
  • the top layer veneer 17 which is larger than the other veneers
  • the device 6 must only attack as an arrow from above to the parting plane 5 to lift the topmost veneer package 2.
  • a floor veneer 18 is arranged as a veneer 12
  • the device 6 must be brought from below to the parting plane 5, which in turn is shown only with an arrow.
  • FIG. 5 shows, in a further embodiment of the invention, a marking of the parting plane 5 by means of a smaller veneer 13, which is arranged adjacent to the parting plane 5.
  • This is a likewise preferred embodiment, but is preferably used only in the unstacking of pre-pressed stacks 1.
  • the device 6 can take over the removal immediately after insertion into the gap and lifting of the veneer package 2, or at least raise it to such an extent that a transport device can retract or attack in order to remove the lifted veneer package 2.
  • powder or other suitable material such as paper or the like is arranged in the parting plane, which prevents glue from inadvertently passing between the top or bottom veneer and contaminating the parting plane 5. This would complicate the destacking and lead to unsightly caking or splitting veneers in a veneer package 2.
  • FIG. 6 the marking of the separating plane is shown by means of a release agent 8 inserted in the parting plane 5, which may preferably be larger than the adjoining veneers but may also advantageously be smaller, as described above for FIG.
  • the difference in size does not have to be symmetrical in this case, but may be adaptable to the stacking device or also dependent on the manner of the separating means 8.
  • separating means 8 adapted to the stacking device 14 and stacking device 15 may be used and particularly preferably form a circulation between these devices.
  • a release agent 8 it is particularly preferred if one or more gripping arms 16 laterally engage under the release agent 8 and lift it off the rest of the stack 1.
  • two superimposed separating means 8 form the parting plane 5 between them and have openings suitable for engaging the device 6 or suitable gripping arms 16 on the edge sides.
  • FIG. 7 again clearly shows the illustration of the individual layers or veneers 4 of a veneer package 2 and the associated covering veneer 17 at the top and the associated bottom veneer 18 below.
  • the narrow sides 9 of the floor veneers 18 and the cover veneers 17 can have the corresponding markings as described above.

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

Abstract

L'invention concerne un procédé et un système d'empilage de feuilles de placage pour former des paquets de feuilles de placage et/ou de dépilage d'une pile de paquets de feuilles de placage, au cours de la production de plaques de matière (10) constituées de paquets de feuilles de placage (2) dans une presse (3). Les paquets de feuilles de placage (2) se composent de plusieurs couches d'une ou de plusieurs feuilles de placage (4) et un plan de séparation (5) est formé entre les paquets de feuilles de placage (2). L'invention consiste essentiellement en ce que le plan de séparation (5) entre les paquets de feuilles de placage (2) est affecté d'une identification au moyen d'un marquage au cours de l'empilage des paquets de feuilles de placage (2) et/ou le plan de séparation (5) est identifié au cours du dépilage au moyen d'un marquage placé sur ou entre les paquets de feuilles de placage (2) et au moins un paquet de feuilles de placage est séparé de la pile au moyen d'un outil et/ou un dispositif automatisé (8).
PCT/EP2016/055210 2015-03-10 2016-03-10 Procédé et système d'empilage de feuilles de placage et/ou de dépilage d'une pile de paquets de feuilles de placage WO2016142498A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015103523.5A DE102015103523A1 (de) 2015-03-10 2015-03-10 Verfahren und Anlage zum Stapeln von Furnieren und/oder zum Abstapeln eines Stapels aus Furnierpaketen
DE102015103523.5 2015-03-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11220405B2 (en) 2018-09-19 2022-01-11 9374-4399 Québec Inc. Dynamically adjusting board stacking system

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1125973A (en) * 1913-07-21 1915-01-26 Arthur N Hood Process of making molded material.
DE1147743B (de) * 1959-12-24 1963-04-25 Eugen Siempelkamp Verfahren und Anlage zum Herstellen von mehrschichtigen Platten, insbesondere Sperrholzplatten, beschichteten Span- und Faserplatten, Tuerplatten od. dgl.
DE1504913A1 (de) * 1965-12-24 1969-09-25 Eugen Siempelkamp Anlage zum Zusammenlegen von aus Folien aufgebauten Schichtplatten
FR2315370A1 (fr) * 1975-06-27 1977-01-21 Alpi Pietro Figlio Et C Sas Procede pour obtenir un placage de bois renforce et placage ainsi obtenu
US4797169A (en) 1986-07-02 1989-01-10 Hashimoto Denki Co. Ltd. Method and apparatus for assembling veneer sheet into a plywood
DE4010307A1 (de) * 1990-03-30 1991-10-02 Dieffenbacher Gmbh Maschf Verfahren zum herstellen von massivholzplatten
DE19627024A1 (de) 1996-07-04 1998-01-15 Dieffenbacher Gmbh Maschf Verfahren und Anlage zum kontinuierlichen Zusammenlegen und Verleimen von Funiertafeln zu Funierschichtplatten
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
DE102009021367A1 (de) * 2009-05-17 2010-11-18 Dieffenbacher Maschinenfabrik Gmbh Verfahren und Anlage zur Herstellung von Schichtholz

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1125973A (en) * 1913-07-21 1915-01-26 Arthur N Hood Process of making molded material.
DE1147743B (de) * 1959-12-24 1963-04-25 Eugen Siempelkamp Verfahren und Anlage zum Herstellen von mehrschichtigen Platten, insbesondere Sperrholzplatten, beschichteten Span- und Faserplatten, Tuerplatten od. dgl.
DE1504913A1 (de) * 1965-12-24 1969-09-25 Eugen Siempelkamp Anlage zum Zusammenlegen von aus Folien aufgebauten Schichtplatten
FR2315370A1 (fr) * 1975-06-27 1977-01-21 Alpi Pietro Figlio Et C Sas Procede pour obtenir un placage de bois renforce et placage ainsi obtenu
US4797169A (en) 1986-07-02 1989-01-10 Hashimoto Denki Co. Ltd. Method and apparatus for assembling veneer sheet into a plywood
DE4010307A1 (de) * 1990-03-30 1991-10-02 Dieffenbacher Gmbh Maschf Verfahren zum herstellen von massivholzplatten
DE19627024A1 (de) 1996-07-04 1998-01-15 Dieffenbacher Gmbh Maschf Verfahren und Anlage zum kontinuierlichen Zusammenlegen und Verleimen von Funiertafeln zu Funierschichtplatten
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
DE102009021367A1 (de) * 2009-05-17 2010-11-18 Dieffenbacher Maschinenfabrik Gmbh Verfahren und Anlage zur Herstellung von Schichtholz

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11220405B2 (en) 2018-09-19 2022-01-11 9374-4399 Québec Inc. Dynamically adjusting board stacking system

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