EP0592957B1 - Procédé et dispositif pour dresser des lamelles de bois - Google Patents

Procédé et dispositif pour dresser des lamelles de bois Download PDF

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Publication number
EP0592957B1
EP0592957B1 EP93116315A EP93116315A EP0592957B1 EP 0592957 B1 EP0592957 B1 EP 0592957B1 EP 93116315 A EP93116315 A EP 93116315A EP 93116315 A EP93116315 A EP 93116315A EP 0592957 B1 EP0592957 B1 EP 0592957B1
Authority
EP
European Patent Office
Prior art keywords
bending
pressing
passage channel
wood laminates
laminates
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.)
Expired - Lifetime
Application number
EP93116315A
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German (de)
English (en)
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EP0592957A1 (fr
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.)
Gebrueder Linck Maschinenfabrik Gatterlinck GmbH and Co KG
Original Assignee
Gebrueder Linck Maschinenfabrik Gatterlinck GmbH and Co KG
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Publication date
Application filed by Gebrueder Linck Maschinenfabrik Gatterlinck GmbH and Co KG filed Critical Gebrueder Linck Maschinenfabrik Gatterlinck GmbH and Co KG
Publication of EP0592957A1 publication Critical patent/EP0592957A1/fr
Application granted granted Critical
Publication of EP0592957B1 publication Critical patent/EP0592957B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27H—BENDING WOOD OR SIMILAR MATERIAL; COOPERAGE; MAKING WHEELS FROM WOOD OR SIMILAR MATERIAL
    • B27H1/00—Bending wood stock, e.g. boards

Definitions

  • the invention relates to a method for straightening wooden slats and similar boards, in particular parquet slats produced by cutting from a square timber without cutting, the wooden slats passing through at least two opposite bending zones.
  • Wooden slats for example short boards or parquet slats, have a curvature or a twist, particularly in the case of non-cutting production. In most cases, they must therefore be straightened before further processing in order to eliminate this curvature or twist caused by the manufacture.
  • the bending angle of the wooden lamella which results in the bending zone must be set in such a way that the resulting permanent deformation of the wooden lamella is precisely the one to be eliminated Compensation for curvature. Therefore, a separate setting is required in each individual case.
  • a swirl of the wooden lamella caused by the chipless separation of the wooden lamella from a squared timber by an inclined knife cannot be compensated with this known device.
  • devices for rotating wooden slats are known (DE-AX-37 01 127), in which the wooden slats pass through a board guide channel provided with a longitudinal twist in the longitudinal direction.
  • the adjustment of the board guide channel must take place in such a way that the permanent deformation of the wooden lamella thereby compensates for the twist caused by the manufacture. This requires a relatively complicated structure of the device and requires a separate setting for each individual case.
  • the object of the invention is therefore to provide a method of the type mentioned and a device suitable for carrying out the method, which enables a reliable straightening of wooden slats, in particular parquet slats produced without cutting, without the need for gluing oppositely curved wooden slats.
  • the successive bending processes in the wave-shaped flow channel can be carried out with approximately the same bending angle.
  • the individual successive bending processes carried out in the wave-shaped passage channel are preferably carried out with a bending angle decreasing in the passage direction.
  • the relatively strong alternating bend at the beginning of the wave-shaped flow channel initially eliminates the original deformation of the wooden lamella; the subsequent alternating bending processes guide the wooden lamella into the flat state it occupies in the pressing section. This ensures that no or at most a very slight deformation of the wooden lamella has to be eliminated during the pressing process. Therefore, there is no danger that after the pressing process the wooden lamella will still have a portion of elastic deformation which would result in a change in shape after the pressing process has ended.
  • a preferred device for carrying out the method according to the invention is characterized in that two rows of bending rollers are arranged at a distance one above the other, which form between them a passage channel which is traversed in the longitudinal direction by the wooden lamellae and which is at least in its initial section undulated and to which a pressing section with a cooling device is arranged .
  • This provides a structurally simple way of subjecting the wooden slats to the required alternating bending processes in a rapid pass in a narrow space.
  • the through-channel is expediently delimited on its upper side and underside by a guide belt, against which the bending rollers each rest.
  • the device shown in FIGS. 1-3 is used to straighten parquet lamellae 1, which were produced by cutting from a square timber without cutting.
  • the parquet slats 1 pass through an alternating bending section 2 in their longitudinal direction.
  • the alternating bending section 2 has two rows of bending rollers 4.
  • the two rows are spaced one above the other in such a way that between them they form a through-channel 5 through which the wooden slats 1 pass in the longitudinal direction.
  • the passage 5 is delimited on its top and on its bottom by a guide belt 6 and 7, respectively, against which the bending rollers 4 rest.
  • the two guide belts 6 and 7 are designed as endless belts, preferably steel belts, which are driven.
  • the deflection rollers 8, 9 are preferably driven.
  • the bending rollers 4 of each row are each offset from the two adjacent bending rollers 4 of the other row in such a way that the through-channel 5 has an undulating shape.
  • the bending rollers 4 of the two rows are arranged so that the distance between the two rows of rollers is less than the total thickness resulting from the thickness of the two guide belts 6, 7 and the thickness of the wooden slats 1.
  • the wooden slats 1 can already be heated by the previous manufacturing process; however, it is also possible to arrange a heating device (not shown) through which the wooden lamellae runs before the alternating bending section 2.
  • the mutual distance between the two rows of bending rollers 4 increases in the direction of passage, so that the individual successive bending operations carried out in the alternating bending section 2 are carried out with a decreasing angle of bending in the direction of passage.
  • the wooden lamellae 1 emerging from the alternating bending section 2 are straightened. They retain this shape, since they are cooled during the straightening process or immediately afterwards to such an extent that the wood constituents, which can be deformed in the warm state, harden liguin and pectin.
  • the wooden lamellae 1 After exiting the alternating bending section 2 (left in FIG. 3), the wooden lamellae 1 can then pass through a pressing section 3 in the transverse direction, in which case they can be cooled further (FIG. 2).
  • the pressing section 3 downstream of the alternating bending section 2 has an upper, endlessly rotating press belt 10 and a lower, endlessly rotating press belt 11, which are driven. Since the two press belts 10, 11 forming the press section 3 extend transversely to the direction of passage of the alternating bending section 2, the wooden slats 1 between the two press belts 10, 11 lie side by side in the transverse direction conveyed and reach after the outlet of the pressing section 3 on a stack or transport device 12 only indicated schematically.
  • the two press belts 10, 11 are pressed against the wooden slats 1 received between them in order to keep them in the flat state.
  • a cooling device 13 is arranged in the illustrated embodiment, through which the wooden fins 1 are cooled. As shown in FIG. 2, the cooling device is located within the two press belts 10, 11. It cools the press belts 10, 11, which are preferably designed as steel belts, each from the rear. Depending on the type of wood, the cooling device 13 can also be dispensed with.
  • the length and the transport speed of the press belts 10, 11 is so matched to the throughput speed of the wooden slats that the dwell time of the wooden slats in the pressing section 3 is sufficient to ensure solidification of the wooden slats 1 in the flattened form.
  • the pressing section 3 shown transversely to the alternating bending section 2 instead of the arrangement of the pressing section 3 shown transversely to the alternating bending section 2, provision can also be made to arrange the pressing section 3 'in the extension of the alternating bending section 2, so that the wooden slats 1 then also pass through the pressing section 3' in the longitudinal direction, as shown in FIG. 4.
  • the wooden lamellae 1 are pressed into the flat shape in the pressing section 3 'formed by an extension of the alternating bending section 2 between the flat pressing surfaces which are arranged one above the other and can also be cooled there by a cooling device 13'.
  • the wooden lamellae 1 are then delivered to a transport device 12 'and transported away.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)

Claims (11)

  1. Procédé de dressage de lamelles de bois (1) et de planches similaires, en particulier par détachement sans copeaux de lamelles de parquet fabriquées en bois équarri, dans lequel les lamelles de bois (1) traversent au moins deux zones de cintrage opposés,caractérisé en ce que les lamelles de bois (1) à l'état chauffé traversent un canal de passage (2) de forme ondulée constitué de plusieurs zones de cintrage opposé et sont ensuite pressées dans une section de pressage (3) entre deux surfaces de pressage planes et refroidies.
  2. Procédé selon la revendication 1, caractérisé en ce que les opérations de cintrage successives dans les zones de cintrage sont effectuées avec un angle de cintrage approximativement constant.
  3. Procédé selon la revendication 1, caractérisé en ce que les opérations de cintrage successives dans les zones de cintrage sont effectuées avec un angle de cintrage décroissant dans la direction de passage.
  4. Dispositif permettant de réaliser le procédé selon l'une quelconque des revendications 1 à 3 avec au moins deux zones de cintrage traversées successivement par les lamelles de bois, caractérisé en ce qu'on agence à distance l'une au-dessus de l'autre deux séries de rouleaux de cintrage (4) qui forment entre elles un canal de passage (5), de forme ondulée au moins dans sa région de départ, traversé par les lamelles de bois (1) dans la direction longitudinale, une section de pressage (3, 3') avec un dispositif de refroidissement (13, 13') étant agencée après ledit canal.
  5. Dispositif selon la revendication 4, caractérisé en ce que le canal de passage (5) est délimité, dans sa partie supérieure et sa partie inférieure, respectivement, par une bande de guidage (6, 7) sur laquelle s'appliquent, respectivement les rouleaux de cintrage (4).
  6. Dispositif selon la revendication 4, caractérisé en ce qu'un dispositif de chauffage traversé par les lamelles de bois (1) est agencé devant le canal de passage.
  7. Dispositif selon la revendication 4, caractérisé en ce que la section de pressage (3) agencée après le canal de passage présente une bande de pressage supérieure (10) et une bande de pressage inférieure (11) tournant sans fin, entre lesquelles les lamelles de bois (1) sont pressées.
  8. Dispositif selon la revendication 4, caractérisé en ce que la section de pressage (3) est agencés transversalement à la direction de passage du canal de passage (2) de forme ondulée.
  9. Dispositif selon la revendication 4, caractérisé en ce que la section de pressage (3') est formée par un prolongement droit du canal de passage.
  10. Dispositif selon la revendication 7 ou 8, caractérisé en ce que le dispositif de refroidissement (13, 13') est agencé à l'intérieur des deux bandes de pressage (10 ou 11) ou des deux bandes de guidage (6, 7).
  11. Dispositif selon la revendication 4, caractérisé en ce que la section de pressage (3, 3') présente deux surfaces de pressage planes agencées à distance l'une au-dessus de l'autre.
EP93116315A 1992-10-10 1993-10-08 Procédé et dispositif pour dresser des lamelles de bois Expired - Lifetime EP0592957B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4234236 1992-10-10
DE4234236A DE4234236A1 (de) 1992-10-10 1992-10-10 Verfahren und Vorrichtung zum Richten von Holzlamellen

Publications (2)

Publication Number Publication Date
EP0592957A1 EP0592957A1 (fr) 1994-04-20
EP0592957B1 true EP0592957B1 (fr) 1996-04-10

Family

ID=6470183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93116315A Expired - Lifetime EP0592957B1 (fr) 1992-10-10 1993-10-08 Procédé et dispositif pour dresser des lamelles de bois

Country Status (3)

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EP (1) EP0592957B1 (fr)
AT (1) ATE136488T1 (fr)
DE (2) DE4234236A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4419682A1 (de) 1994-06-06 1995-12-07 Linck Masch Gatterlinck Verfahren und Vorrichtung zum Herstellen von Holzlamellen
AT405036B (de) * 1995-03-22 1999-04-26 Berger Johann Verfahren und anlage zur herstellung von neuem längsholz-, insbesondere leisten- und/oder stabmaterial
US5816304A (en) * 1997-08-04 1998-10-06 Triangle Pacific Corporation Apparatus and method for increasing the flexibility of and straightening flooring strips
JP3941988B2 (ja) 1997-12-04 2007-07-11 株式会社カネカ アルケニル基含有イソブチレン系ブロック共重合体及びその製造方法
US6348546B2 (en) 1997-12-04 2002-02-19 Kaneka Corporation Alkenyl-containing isobutylene group block copolymer and process for producing it
FR2888769A1 (fr) * 2005-07-21 2007-01-26 Pascal Mathieu Procede de traitement de douelles de barriques pour un recyclage industriel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE931129C (de) * 1952-11-04 1955-08-01 Martin Grimme Verfahren und Vorrichtung zum Herstellen von flachen Kleiderbuegeln mit ebenen Seitenflaechen
DE3207548C2 (de) * 1982-03-03 1984-02-23 Gebrüder Linck Maschinenfabrik und Eisengießerei "Gatterlinck", 7602 Oberkirch Vorrichtung zur Herstellung von flachen Holzerzeugnissen, wie Brettern
WO1988000517A1 (fr) * 1986-07-10 1988-01-28 Wurster U. Dietz Gmbh U. Co. Maschinenfabrik Procede et dispositif de decoupage sans eclats de troncs d'arbres en produits de bois
DE3623235A1 (de) * 1986-07-10 1988-01-21 Wurster & Dietz Gmbh U Co Masc Verfahren und vorrichtung zum zerlegen von baumstaemmen in holz-fertigerzeugnisse
DE3701127A1 (de) * 1987-01-16 1988-07-28 Linck Masch Gatterlinck Vorrichtung zum richten von brettern u.dgl.
US4793392A (en) * 1988-02-03 1988-12-27 Oakridge Railing And Stair Company Inc. Bending device
DE3815304A1 (de) * 1988-05-05 1989-11-16 Abbey Etna Machine Co Verfahren und vorrichtung zum biegen bzw. richten von profilen und baendern mit walzen bzw. rollen

Also Published As

Publication number Publication date
DE59302174D1 (de) 1996-05-15
DE4234236A1 (de) 1994-04-14
EP0592957A1 (fr) 1994-04-20
ATE136488T1 (de) 1996-04-15

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