EP0184478A1 - Verfahren und Vorrichtung zur Fertigung von Lamellenholz - Google Patents

Verfahren und Vorrichtung zur Fertigung von Lamellenholz Download PDF

Info

Publication number
EP0184478A1
EP0184478A1 EP85402130A EP85402130A EP0184478A1 EP 0184478 A1 EP0184478 A1 EP 0184478A1 EP 85402130 A EP85402130 A EP 85402130A EP 85402130 A EP85402130 A EP 85402130A EP 0184478 A1 EP0184478 A1 EP 0184478A1
Authority
EP
European Patent Office
Prior art keywords
layers
advance
wood
braking
lamellae
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.)
Granted
Application number
EP85402130A
Other languages
English (en)
French (fr)
Other versions
EP0184478B1 (de
Inventor
Gérard Sagot
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0184478A1 publication Critical patent/EP0184478A1/de
Application granted granted Critical
Publication of EP0184478B1 publication Critical patent/EP0184478B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • 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
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/0013—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles
    • B27M3/006—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected both laterally and at their ends

Definitions

  • the present invention relates to a method and a machine for manufacturing pieces of wood from glued-laminated lam, from elongated elementary strips of rectangular section; the composite pieces of wood comprise several continuous and juxtaposed layers formed by the lamellae, the lamellae being butted by finger joints in at least two layers.
  • the document DE-A-1528135 describes a method and a machine according to which lamellas of the different layers are juxtaposed, the grooves of the lamellas of the adjacent layers being offset in the direction of the length of the layers, and the adjacent layers are glued by pressing in the stacking direction of the layers. All of the layers are braked when it passes through a continuous manufacturing machine, the pressing force being applied by two track elements which progressively advance during the manufacture of the bonded part. Good bonding of the cuts of the lamellae of the different layers is obtained by applying, to each successive lamella of each layer, a feed force acting along the length. In this way, the bonding made at each cut can be of good quality.
  • the invention relates to a method and a machine for eliminating planing after manufacturing the piece of wood. Consequently, they allow a very significant reduction in wood losses.
  • the elementary strips are planed before the formation of the piece of wood, this planing bearing only on a small thickness, for example 3 mm, and the planing of the finished piece of wood is eliminated and is replaced by a simple sanding intended to remove the marks left by the mechanical advance devices and the glue burrs.
  • the method and apparatus according to the invention also suppress any relative buckling of the strips by applying forces to the individual strips in the same plane transverse to the direction of advance of the manufactured piece of wood. This characteristic is obtained by using thin drive members.
  • the method and apparatus according to the invention allow the manufacture of pieces of wood having layers of different thicknesses.
  • the invention allows the production of such pieces of wood having layers of different thicknesses.
  • the method being characterized in that it further comprises, at least temporarily, the application of complementary pressing forces, in transverse direction both to the length of the layers and to the direction of the main pressing forces.
  • the braking force is low enough for the piece of wood being manufactured to progress gradually.
  • the braking force applied is sufficient to stop the piece of wood, the process being cyclical, the braking and pressing operations being discontinuous.
  • the feed forces applied individually to the lamellae of the different layers are all applied substantially in a plane transverse to the length of the layers. It is also preferable that the areas of application of the feed forces to the lamellae of the different layers are adjustable in the plane transverse to the length of the layers.
  • the braking device temporarily blocks the piece of wood, so that it stops, and the braking and pressing devices operate discontinuously.
  • the individual advance devices are arranged so that the areas of application of force to the lamellae of the different layers are all substantially in the same plane transverse to the direction of advance. It is better that the spacing feed devices is adjustable in this plane, in the direction of the main pressing forces.
  • the individual advance devices can be driven by a common power source to which they are connected by individual transmissions.
  • These transmissions can for example be torque limiters, friction clutches, etc., preferably allowing the force applied to the blades to be adjusted.
  • the feed devices advantageously include friction clutches.
  • FIG. 1 is a general schematic perspective showing the essential elements of a machine according to the invention.
  • the machine frame is not shown, but it carries the various elements essential to the operation of the machine.
  • the piece of glued laminated timber which is manufactured moves in the direction A, in the direction of the arrow, and that the different layers are stacked in a direction B which is perpendicular to the direction d 'advance, this direction being horizontal in the particular embodiment of lc. figure 1.
  • the arrow C corresponds to the direction of the width of the slats.
  • the piece of wood shown in FIG. 1 has a thickness greater than its width.
  • FIG. 1 the manufactured piece of wood 14 leaving the pressing device, is formed by several layers 12 each consisting of elongated strips 10. These strips appear more clearly in FIG. 4 which indicates that the successive strips of a same layer are butted by finger joints 16.
  • FIGS. 2 and 3 moreover show in more detail two types of finger joints which can be used according to the invention, the type represented in FIG. 2 being more suitable for a machine of the discontinuous type, that is to say with sequential advance, whereas the type of FIG. 3 is better suited to a machine with continuous advance.
  • the machine of Figure 1 comprises a main pressing device 32 which comprises a fixed plate 34 and a movable plate 36, which can provide heating; the movable plate can be moved by jacks 38 forming with the plates the main pressing device in the thickness direction, that is to say in the direction of stacking of the lamellae.
  • a braking device 26 is placed downstream of the press 32 and, in the schematic form shown, it comprises two clamping bars 28 which can be moved apart or brought closer by a jack 30. When they are brought closer, they stop the advance of the piece of wood in the machine.
  • the machine comprises an additional pressing device 20 which comprises fixed and mobile heating plates 22, the mobile plate being able to be moved by jacks 24. It is noted in the figure that the width of the plates 34, 36 of the main press must be less than the width of the slats, for example a few millimeters.
  • a device for advancing the lamellae of the different layers individually bears the reference 40 and is shown more clearly in FIGS. 4, 6 and 7. It comprises several splined wheels 44 driven by a common shaft 42. This device is described in more detail in the remainder of this specification, but it can be noted in FIG. 4 that each of the rolled wheels 44 which advances a strip 10 is in contact with this strip in a zone 18, a suitable device such as a mad roller being placed under the slats, opposite the device 40.
  • the slats During the operation of the press, the slats, previously positioned, arrive one next to the other under the device 40 for individual advance.
  • the braking device 26 When the braking device 26 is applied and prevents any advance, the device 40 assembles the strips and the two presses 32 and 20 are then controlled.
  • the plates 34 and 36 may be outside the plates of the press 20, wooden spacers of suitable size being placed between the plates and the outer strips.
  • the two presses When the two presses have operated for the necessary time, in a conventional manner, they are open and the braking device 26 is released so that the piece of wood can advance. When it has advanced by a length substantially corresponding to the length of the plates 22, the braking device 26 is again tightened and the cycle begins again.
  • Figure 1 shows two important features of the invention.
  • the complementary press 20 puts the edges of all the strips 10 in two same planes so that the finished piece of wood 14 does not require planing thanks to the correction of the defect in the linearity of the slats.
  • all the wheels 44 of the feed device 40 have their zones 18 of cooperation with the juxtaposed lamellae which are all aligned in a direction transverse to the feed direction. In this way, the lamellae cannot exhibit buckling.
  • Figures 5 to 7 show another characteristic of the invention. More specifically, we realized that, in a piece of glued laminated wood, it was not necessary for all the layers to have the same thickness. Wood pieces having excellent strength can be obtained by bonding relatively thin layers on the sides and relatively thick layers in the center.
  • Figure 5 is a schematic section of such a piece of wood having, on each of two opposite faces, two relatively thin layers formed by lamellae 10a and 5 relatively thick layers formed by lamellae 10b.
  • the thicknesses of the strips 10a and 10b can be 17 and 44 mm respectively.
  • the mechanical strength of such a beam is practically the same as that of a beam in which the strips 10b are replaced by thinner strips having an identical total thickness.
  • Figures 6 and 7 show an example of a feed device allowing such adjustment.
  • a main motor drives a shaft 42 which has grooves or two longitudinal grooves 43 as shown in Figure 7.
  • Friction clutch plates 52 are mounted on the shaft and have parts which penetrate in the grooves 43 so that these plates can move along the tree but are forced to rotate with it.
  • These plates 52 carry brake linings which delimit an external surface 50 of cooperation with a surface adjacent 48 of a drive wheel 44.
  • the surface of the latter is grooved as indicated by reference 46, so that it does not slip in contact with an adjacent strip.
  • the shaft 42 normally carries a stack of plates 52 and wheels 44 which alternate.
  • the wheels 44 can rotate freely around the shaft 42 when they are not in contact with a lining of a plate 52.
  • a part of the shaft 42 carries a clutch plate 56 which is integral with the tree and cannot move in translation along it.
  • all the wheels 44 and the clutch plates 52 come into contact so that each wheel 44 is driven, as long as that the resistance force exerted on its external surface does not exceed the friction forces between the two surfaces 48 and 50.
  • the members 58 and 60 compress the stack of wheels 44 and plates 52, all the wheels 44 are trained.
  • the machine When the machine is to be used for the manufacture of beams having layers of different thicknesses as indicated in FIG. 5, several wheels 44 can be used for the same layer such as 10b.
  • a spacer is mounted in a suitable position on the shaft, between a wheel and a plate adjacent clutch.
  • Such a spacer is represented by the reference 54 in FIG. 6.
  • the shaft 42 usually comprises a number of spacers less than one unit than the number of layers and, between two neighboring spacers , one, two or three wheels 44 for example. In this way, the spacing of the feed devices can be adjusted.
  • the force exerted by the advancing devices can be adjusted by adjusting the force of application of the wheels against the clutch plates 52.
  • any other device allowing the separate application of an adjustable torque, at the suitable location, that is to say in front of each layer, can be used within the framework of the invention.
  • Hydraulic torque converters, mechanical torque limiters, for example ball bearings, etc. are devices which can be advantageously used.
  • FIGS. 6 and 7 represent a third important characteristic of the invention which is the adjustment of the position of the advancing devices so that they allow the production of lamellar pieces having layers of different thicknesses.
  • heating plates has been described for pressing, any device usually used for bonding is suitable according to the invention.
  • any device usually used for bonding is suitable according to the invention.
  • high frequency or microwave devices are ideal.
EP19850402130 1984-11-05 1985-11-05 Verfahren und Vorrichtung zur Fertigung von Lamellenholz Expired EP0184478B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8416798A FR2572669B1 (fr) 1984-11-05 1984-11-05 Procede et dispositif pour la fabrication de pieces de bois composees en lamelle-colle
FR8416798 1984-11-05

Publications (2)

Publication Number Publication Date
EP0184478A1 true EP0184478A1 (de) 1986-06-11
EP0184478B1 EP0184478B1 (de) 1989-07-19

Family

ID=9309249

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850402130 Expired EP0184478B1 (de) 1984-11-05 1985-11-05 Verfahren und Vorrichtung zur Fertigung von Lamellenholz

Country Status (3)

Country Link
EP (1) EP0184478B1 (de)
DE (1) DE3571573D1 (de)
FR (1) FR2572669B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989000909A1 (en) * 1987-07-24 1989-02-09 Pfeifer Oskar Process and device for manufacturing an endless line of wooden boards

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE890568C (de) * 1951-08-28 1953-09-21 Siemens Ag Druckkoerper fuer Verleimungspressen
US2675037A (en) * 1953-03-19 1954-04-13 Pedro Q Iglesias Hydraulic press for laminating wood
GB1155352A (en) * 1966-02-09 1969-06-18 Feiglin & Sons Proprietary Ltd Apparatus for Jointing Timber Sections.
DE1528135A1 (de) * 1963-10-23 1970-07-16 Nat Res Dev Verfahren und Vorrichtung zum kontinuierlichen Herstellen geschichteter Verbaende aus Holzstuecken
CH496524A (de) * 1968-09-11 1970-09-30 Heid Ag Hans Pressdeckel für Fugenverleimpressen
DE2160257A1 (de) * 1970-12-08 1972-07-06 Marstrand, Anton Julius, Dipl.-Ing., Munkvoll (Norwegen) Verfahren und Einrichtung zum Anstücken von Holz
DE2119612A1 (de) * 1971-04-22 1972-11-02 Hombak Maschinenfabrik Kg, 6550 Bad Kreuznach Anlage zur Stirnholzverleimung mittels Keilzinken
DE3224670C2 (de) * 1981-07-16 1992-01-02 Vincent J. Beverly Farms Mass. Us Marino

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE890568C (de) * 1951-08-28 1953-09-21 Siemens Ag Druckkoerper fuer Verleimungspressen
US2675037A (en) * 1953-03-19 1954-04-13 Pedro Q Iglesias Hydraulic press for laminating wood
DE1528135A1 (de) * 1963-10-23 1970-07-16 Nat Res Dev Verfahren und Vorrichtung zum kontinuierlichen Herstellen geschichteter Verbaende aus Holzstuecken
GB1155352A (en) * 1966-02-09 1969-06-18 Feiglin & Sons Proprietary Ltd Apparatus for Jointing Timber Sections.
CH496524A (de) * 1968-09-11 1970-09-30 Heid Ag Hans Pressdeckel für Fugenverleimpressen
DE2160257A1 (de) * 1970-12-08 1972-07-06 Marstrand, Anton Julius, Dipl.-Ing., Munkvoll (Norwegen) Verfahren und Einrichtung zum Anstücken von Holz
DE2119612A1 (de) * 1971-04-22 1972-11-02 Hombak Maschinenfabrik Kg, 6550 Bad Kreuznach Anlage zur Stirnholzverleimung mittels Keilzinken
DE3224670C2 (de) * 1981-07-16 1992-01-02 Vincent J. Beverly Farms Mass. Us Marino

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989000909A1 (en) * 1987-07-24 1989-02-09 Pfeifer Oskar Process and device for manufacturing an endless line of wooden boards

Also Published As

Publication number Publication date
EP0184478B1 (de) 1989-07-19
FR2572669B1 (fr) 1988-04-15
FR2572669A1 (fr) 1986-05-09
DE3571573D1 (en) 1989-08-24

Similar Documents

Publication Publication Date Title
EP2760650A1 (de) Keilverzahnte verbindung zum zusammensetzen von bauteilen aus fasermaterialien
EP0184478B1 (de) Verfahren und Vorrichtung zur Fertigung von Lamellenholz
BE1001042A5 (fr) Procede de construction d'un noyau magnetique.
EP0309356B1 (de) Verfahren zur Herstellung eines Holzgegenstandes mit eingebundener Färbung
EP0798113B1 (de) Verfahren und Maschine zum Herstellen von Platten
FR2798615A1 (fr) Dispositif et procede pour produire des panneaux de parquet
BE1004756A5 (fr) Procede d'obtention de bois d'oeuvre a partir de troncs d'arbre ou de planches de sciage de tronc, et dispositif pour la mise en oeuvre du procede.
FR2473954A1 (fr) Procede et dispositif pour l'acceleration de la prise de collage d'un materiau composite comportant au moins deux couches lamellaires encollees l'une a l'autre
BE1016021A3 (fr) Plaques a base de liant hydraulique a bords amincis, procede de fabrication de plaques a base de liant hydraulique et ligne de production de telles plaques, et procede de construction de second oeuvre.
EP0322646A1 (de) Furniermessermaschine
FR2471857A1 (fr) Presse de formation en continu d'une latte ou analogue en matiere compressible
EP3744492B1 (de) Herstellungsverfahren von mehrschicht-massivholzplatten
FR3039456B1 (fr) Panneau de bois multicouche et procede de decoupe et d'assemblage d'avives de bois a l'etat vert pour la fabrication d'un tel panneau
FR2547762A3 (fr) Machine-outil a bois raboteuse d'epaisseur
EP0192532B1 (de) Lamellenholz und Verfahren und Vorrichtung zu dessen kontinuierlicher Fertigung
FR2624781A1 (fr) Procede de fabrication d'elements profiles en bois, dispositif pour la mise en oeuvre de ce procede et elements profiles ainsi obtenus
EP1170439B1 (de) Parkettelement mit ausgleichenden Fugen und Verfahren zur Herstellung
FR2673222A1 (fr) Element de revetement boise tel qu'un lambris et procede de fabrication d'un tel element.
FR2677692A1 (fr) Poutre economique en lamelle-colle, procede de fabrication et machine pour le mettre en óoeuvre.
FR2709263A1 (fr) Ligne et procédé de sciage de bois sur quartier.
BE549363A (de)
BE407513A (de)
FR2681809A1 (fr) Procede et installation de traitement de lames de bois deroule.
BE454922A (de)
EP0528717A1 (de) Verfahren zur Herstellung einer kontinuierlichen trockenen Furnierstoffbahn aus sehr kleinen frischen Furnierelementen durch Abwickeln

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR SE

17P Request for examination filed

Effective date: 19861121

17Q First examination report despatched

Effective date: 19871110

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19890719

REF Corresponds to:

Ref document number: 3571573

Country of ref document: DE

Date of ref document: 19890824

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19911129

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920124

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19921130

BERE Be: lapsed

Owner name: SAGOT GERARD

Effective date: 19921130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19930803

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19941128

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19960731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST