EP0732180B1 - Verfahren zur Herstellung von dünnen Brettern, insbesondere Parkettlamellen - Google Patents

Verfahren zur Herstellung von dünnen Brettern, insbesondere Parkettlamellen Download PDF

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Publication number
EP0732180B1
EP0732180B1 EP96103619A EP96103619A EP0732180B1 EP 0732180 B1 EP0732180 B1 EP 0732180B1 EP 96103619 A EP96103619 A EP 96103619A EP 96103619 A EP96103619 A EP 96103619A EP 0732180 B1 EP0732180 B1 EP 0732180B1
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EP
European Patent Office
Prior art keywords
thickness
cutting
cutting device
squared timber
board
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
EP96103619A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0732180A2 (de
EP0732180A3 (de
Inventor
Siegmar Gönner
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 GmbH and Co KG Gatterlinck Maschinen Fabrik
Original Assignee
Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
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Publication date
Application filed by Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik filed Critical Gebrueder Linck GmbH and Co KG Gatterlinck Maschinen Fabrik
Publication of EP0732180A2 publication Critical patent/EP0732180A2/de
Publication of EP0732180A3 publication Critical patent/EP0732180A3/de
Application granted granted Critical
Publication of EP0732180B1 publication Critical patent/EP0732180B1/de
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
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/06—Cutting strips from a stationarily- held trunk or piece by a rocking knife carrier, or from rocking trunk or piece by a stationarily-held knife carrier; Veneer- cutting machines

Definitions

  • the invention relates to a method and a system according to the preambles of Claims 1 and 7 for cutting cutting thin boards a squared timber. Such a method is used inter alia. to create thin boards used for the top layer of floor covering laminates.
  • the cutting-free production of thin boards from a square timber is known. It is also known that in this method the thickness of those produced thin boards are not relative as when sawing preferably dry wood can be predetermined precisely, since in the cutting process the wood in the moist and preferably also heated condition is processed and various wood parameters as well as machine parameters the thickness of a created board.
  • DE 40 26 346 A1 describes a method for solving this problem, in which the after removing one or more thin boards remaining timber is measured in its thickness and then an attempt is made To change the setting of the machine parameters relevant to the cutting thickness in such a way that the remaining square timber is thinned as evenly as possible in the remaining number Boards are divided, which are still to be generated from it, so that total no residual board that cannot be used remains.
  • This approach is the Philosophy as the goal, a square timber completely and lossless to divide into usable thin boards, with possible deviations in the thickness of the thin boards produced can be accepted. This is at Procedures in which the boards after cutting after Drying process because of the dimensional changes that occur in the wood must then be leveled out, acceptable within certain limits.
  • Essential of this method is that the result of the measurement of the residual squared timber solely in the further division of one or at best a specific one Group of squared timber flows, the processing of which is under the same Conditions was started.
  • the method is preferably also used in Systems with only one cutting device or a sequence of a few cutting devices, For example, two machines are used in which the squared timber after passing through one or the small group of cutting devices is measured in its remaining thickness, and then by running again to be further divided by the cutting system. With this approach there is usually enough time during the return time of the squared timber Adjustment of the cutting devices available, then under the squared timber to put new conditions back into work.
  • JP-A-5131401 describes a method for producing thin boards, especially of parquet slats, from a squared timber by repeated chipless cutting of a thin board from the square timber in one Cutting device and repeated iteration of the not yet completely in thin boards of split residual timber through the cutting device in which the Squared timber is divided into thin boards in one pass, the squared timber to cut a thin board in the longitudinal direction of each Fiber orientation is moved against a generally stationary knife, and at the at least one thickness measurement when the squared timber passes through the Cutting device takes place, the thickness of the cutting device generated thin boards, the determined actual value of the thickness of the boards the cutting device with the nominal value of the thickness of this Cutting device to be produced and compared from a thin board Deviation from the nominal value of the thickness, a signal is obtained and the correction of the Knife setting relevant to the cutting thickness of the cutting device for the Detaching thin boards from subsequent squared timbers is used as well an associated system has become known, in which the cutting devices leaving slats or thin boards have a
  • the actual board thickness is recorded directly on the cut slats or boards, what with principle-related inaccuracies is connected so that the thickness constancy of the slats or thin boards suffer from.
  • a thickness measurement on the separated boards can therefore also be done problematic and complex design, because the freshly produced boards one Warp in the form of a curvature and / or twisting, so that a Alignment of the board surface at the measuring point exactly perpendicular to the Direction of action of the sensor cannot be guaranteed, Straightening devices for the boards are not always used. Also it is usually useful to cut the boards in during and after not to hinder their lateral movement, so that Measuring devices that the boards at a certain distance from their Should scan the outer edge, do not grasp certain boards. Exactly Guide devices for the separated boards would be an additional one Require capital expenditure that is not required for other reasons.
  • the invention is based, to perform the method or the task train the associated system so that the cut slats or thin Boards have a high thickness consistency.
  • the thickness of the lamellae or thin boards not directly on these slats or thin boards themselves, but from the difference between the squared timber thicknesses in front of and behind the cutting machine. This type of thickness determination leads to more precise results and therefore a higher consistency of thickness of the cut slats and thin boards.
  • the invention is also based on the previous aim, which at one Kantholz measured residual thickness in measures to further split this To implement square timber.
  • the primary goal is to record the exact Thickness of the thin boards produced in each of the cutters.
  • the cutting thickness relevant parameters of this Cutting device usually the distance of the knife from the support surface for the squared timber, corrected in such a way that when thin boards are cut from subsequent square timbers, if possible, boards of nominal thickness or within a predetermined tolerance are generated.
  • Such a procedure is particularly advantageous if anyway behind a series of cutting machines that have a square timber in one Passage should completely divide a device, especially one Planing machine for cutting thickness reduction of the last machine leaving rest of the board is provided.
  • one Planing machine for cutting thickness reduction of the last machine leaving rest of the board is provided.
  • a cutting Processing can be done in the planer. Basically it is however, by determining the thickness of the remaining squared timber before the last one intended cutting process to determine how this residual squared timber continues to be processed.
  • the system should preferably be designed such that at least one or more of the cutting devices for the passage a squared timber are formed without cutting off a board, or that a residual squared timber via a bypass conveyor path on one or more cutting devices can be passed.
  • the sequence of the cutting process described here is preferably in one Overall process flow embedded, in which the cut thin boards in in a known manner after cutting to a certain final moisture dried and then as a top layer for a laminate product, in particular a floor covering can be used, one of the slats Compiled top layer with underlay layers of a certain thickness, for example sawn wooden rods, chipboard or the like. Glued under pressure is, the slats after drying, if necessary, on their side edges post-processed, but preferably left in their thickness as created become. This saves a thickness processing step. As already mentioned above mentioned, the surface of the lamella top layer is already glued Reworked product. The possibility of calibrating the thickness of the slats by grinding after drying, but before further processing Being able to leave out leads to material savings and savings Abrasives.
  • the thickness measurement is preferably carried out in the area of the funding for the Leading the (residual) squared timbers are provided. Find preferably Thickness measuring devices that use the laser beam principle.
  • the thickness measurement is expediently carried out at points where the Funding, such as a conveyor belt, is not included in its thickness.
  • the belt can be narrower here be carried out as the width of the squared timbers, so that these preferably on each Survive side of the conveyor belt to the in these protruding areas
  • To make measurements preferably two measurements in each case Distance from the two side edges of the material to be conveyed.
  • the measuring point can also be arranged at an interruption point of the funding. At Using a conveyor belt allows an interruption point generate that the conveyor belt for a short time via pulleys from the material to be conveyed is routed away and then reunited with him. Also the point of transition from one funding to another can be exploited become.
  • FIGS. 1 to 4 illustrated embodiments explained in more detail.
  • the centerpiece of the plant for the production of parquet panels shown in FIG. 1 is the cutting device 1 through which a squared timber or parquet frieze or the residual wood 5 is passed through until it is finished. Doing so the transport route designated 6 is followed.
  • the facility also includes a planing machine 2, a warming tunnel 3 and two thickness measuring devices 4.0 and 4.1.
  • the thickness of the parquet frieze or the residual wood 5 is before and measured after removing a parquet panel. From the difference of Measured values result in the actual thickness of the parquet panels, which at 7 from the system is removed. If the actual thickness deviates from the target thickness D, a correction is made the cutting thickness setting on the cutting device.
  • the residual wood thickness S is greater than or equal to twice the nominal thickness D of the parquet panels further circulation or cutting process carried out. Is the residual wood thickness S ⁇ 2 D but larger Dx with Dx> D, the remaining wood 5 becomes the Cutting device 1 fed and the resulting remaining board of thickness (Dx-D) discarded. If the residual wood thickness S is less than Dx, the residual wood 5 becomes the Planer 2 fed and machined to the desired thickness D.
  • the value Dx is dependent on the machine parameters and the Species of wood chosen so that a remaining board of thickness (Dx-D) from the cutting device 1 can still be easily grasped and handled.
  • the finished one Parquet panels are removed at 7.2 and the chips are removed from the at 9 Planer 2 removed.
  • the residual wood thickness S is exactly the same D is, you have a custom-made parquet panels, at 7.1 out of the system is removed. If the measurement shows a residual wood thickness S ⁇ D, this becomes Residual wood removed at 8 as a committee.
  • a parquet frieze is finished, a new specimen from the warming tunnel 3 into the cutting device 1 introduced, the necessary control signals also on the thickness measurement based on 4.2.
  • the parquet panels are produced in a single pass of the parquet frieze or the residual wood 5, whereby for the Production of n + 1 parquet panels from a parquet frieze n cutting devices and a planer 2 are required. Only three are shown Cutting machines, namely the first 1.1 that any intermediate stage 1.i and the last 1.n. The corresponding thickness measuring devices are corresponding designated 4.1, 4.i and 4.n. There is also a thickness measuring device 4.0 provided with which the thickness of the parquet frieze before entering the first Cutting device 1.1 is determined. At 7.1, 7.i and 7.n the parquet panels taken from the plant.
  • the last parquet panels 5a is made from the Planer 2 carried away, regardless of whether the last measured Residual wood thickness S is greater than or equal to D. In the latter case only no more cutting thickness reduction.
  • D Residual wood thickness
  • the warming tunnel 3 becomes fresh parquet friezes fed to the first cutting device 1.1. Otherwise, further processing takes place the residual wood 5 in principle depending on the thickness measurement exactly as described for the system according to FIG. 1.
  • Figure 3 shows a section perpendicular to the transport device.
  • the parquet frieze or residual wood 5 is wider than the conveyor belt 10, so that the thickness measurement by the thickness measuring device consisting of transmitter 4a and receiver 4b 4.0, 4.1 can take place on the side of the conveyor belt 10.
  • FIG. 4 Another possibility of interference-free thickness measurement is shown in FIG. 4, in a side view of the area of the thickness measuring device 4.0, 4.1, the again consists of transmitter 4a and receiver 4b.
  • the conveyor belt 10 on the Parquet frieze or residual wood 5 is transported from right to left (see arrow), is deflected via the rollers 11, 12, 13, so that an area arises in which the receiver 4b housed and performed a trouble-free measurement can be.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Detergent Compositions (AREA)
EP96103619A 1995-03-17 1996-03-08 Verfahren zur Herstellung von dünnen Brettern, insbesondere Parkettlamellen Expired - Lifetime EP0732180B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19509653A DE19509653C1 (de) 1995-03-17 1995-03-17 Verfahren zur Herstellung von dünnen Brettern, insbesondere Parkettlamellen
DE19509653 1995-03-17

Publications (3)

Publication Number Publication Date
EP0732180A2 EP0732180A2 (de) 1996-09-18
EP0732180A3 EP0732180A3 (de) 1997-01-15
EP0732180B1 true EP0732180B1 (de) 2000-07-19

Family

ID=7756916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103619A Expired - Lifetime EP0732180B1 (de) 1995-03-17 1996-03-08 Verfahren zur Herstellung von dünnen Brettern, insbesondere Parkettlamellen

Country Status (5)

Country Link
EP (1) EP0732180B1 (ja)
JP (1) JPH0985712A (ja)
AT (1) ATE194791T1 (ja)
CA (1) CA2171508A1 (ja)
DE (2) DE19509653C1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29703542U1 (de) * 1997-02-27 1997-04-17 Große, Dieter, 27386 Bothel Schablone zum Fräsen von und damit hergestellte Lamellen und/oder Segmenten, insbesondere von Bodenbelägen
DE102009019512A1 (de) 2009-04-24 2010-10-28 GreCon Dimter Holzoptimierung Süd GmbH & Co. KG Anlage zur Herstellung von Platten aus Lamellen aus Holz sowie Verfahren zur Herstellung solcher Platten

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05131401A (ja) * 1991-09-10 1993-05-28 Marunaka Tekkosho:Kk 基材切削装置及び基材切削方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4026346A1 (de) * 1989-11-01 1991-05-02 Linck Masch Gatterlinck Verfahren zum spanlosen aufteilen eines kantholzes in bretter gleicher dicke
DE4244310C1 (de) * 1992-12-28 1993-10-28 Linck Masch Gatterlinck Verfahren und Anlage zum schneidenden Aufteilen eines Kantholzes in Bretter vorbestimmter Dicke

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05131401A (ja) * 1991-09-10 1993-05-28 Marunaka Tekkosho:Kk 基材切削装置及び基材切削方法

Also Published As

Publication number Publication date
EP0732180A2 (de) 1996-09-18
JPH0985712A (ja) 1997-03-31
CA2171508A1 (en) 1996-09-18
DE19509653C1 (de) 1996-05-23
DE59605614D1 (de) 2000-08-24
ATE194791T1 (de) 2000-08-15
EP0732180A3 (de) 1997-01-15

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