WO2007118932A1 - Method and equipment for dimensioning and squaring of wood veneer - Google Patents

Method and equipment for dimensioning and squaring of wood veneer Download PDF

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Publication number
WO2007118932A1
WO2007118932A1 PCT/FI2007/050190 FI2007050190W WO2007118932A1 WO 2007118932 A1 WO2007118932 A1 WO 2007118932A1 FI 2007050190 W FI2007050190 W FI 2007050190W WO 2007118932 A1 WO2007118932 A1 WO 2007118932A1
Authority
WO
WIPO (PCT)
Prior art keywords
veneer
cutter
equipment
veneer sheet
sheet
Prior art date
Application number
PCT/FI2007/050190
Other languages
French (fr)
Inventor
Olavi Mikkola
Original Assignee
Upm-Kymmene Wood Oy
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 Upm-Kymmene Wood Oy filed Critical Upm-Kymmene Wood Oy
Priority to EP07730677A priority Critical patent/EP2007559A4/en
Publication of WO2007118932A1 publication Critical patent/WO2007118932A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/007—Control means comprising cameras, vision or image processing systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • 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
    • B27D1/10—Butting blanks of veneer; Joining same along edges; Preparatory processing of edges, e.g. cutting
    • 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
    • B27L5/08—Severing sheets or segments from veneer strips; Shearing devices therefor; Making veneer blanks, e.g. trimming to size
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/60—Analysis of geometric attributes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/3806—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface
    • B26F1/3813—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet

Definitions

  • This invention relates to a method presented in the preamble of claim 1 and to an equipment presented in the preamble of claim 5 for dimensioning and squaring of wood veneer in conjunction with drying.
  • Wood veneers are used as basic elements in the manufacture of plywood and, for example, also to coat different surfaces, including furniture and doors.
  • the wood veneers are machined of warm, soaked wood stock by cutting, rotary cutting or planing, after which veneer sheets manufactured in such a way are dried with different drying means.
  • the width of veneer sheets nevertheless varies several centimetres after the drying because the drying shrinkage is not constant. Additionally, there is skewness in the veneer sheets on account of the drying shrinkage and wood anisotropism. As a result dried veneers are neither rectangular nor of equal width. On account of these deformations caused by the drying there are defects in quality of the finished veneers and some raw material goes to waste, when for the piles one needs to use veneers, which has sides that are not straight. The problem is also a measure of the generated edge chips.
  • the target of this invention is to remove above-mentioned disadvantages and also to effect a simple, raw wood material- and glue-saving, fast and preferred and also industrially applicable method and equipment for dimensioning and squaring of wood veneer in conjunction with drying.
  • a method in accordance with the invention is characterised by features presented in the characterising part of claim 1.
  • Respectively an equipment in accordance with the invention is characterised by features presented in the characterizing part of claim 5.
  • Other embodiments of the invention are characterised by features presented in other claims.
  • the process and equipment according to the present invention will be referred below with a common nomination 'a solution in accordance with the invention.
  • the advantage of the solution in accordance with the invention is among other things major saving of raw materials.
  • Stock lengths in use can be made shorter, for example because required block measurements get shorter.
  • cutting width of the veneers can be narrowed because the veneers will be cut to the width in accordance with the block measurements.
  • the savings gained are approximately 3-4 % and gross measurements of veneers decline approximately 3-8 % depending on the measurement group.
  • the advantage is also that the glue consumption declines as veneer gross measurements decline.
  • An additional advantage is that the amount of undersized veneer will be very small because the veneers are dimensioned and rectangular.
  • the advantage is also that production automation in the working phases following the drying will be facilitated significantly and quality improves because the veneer sheets are of fixed size and form.
  • an additional advantage is that in connection with the veneer continuation the current problems are abolished since in conjunction with the continuation no more notches will be generated. Also for example in the piling considerable benefits will be reaped because out of the straightened veneers it is easy to make a dimensionally accurate pile with much smaller working allowance as currently. Further advantage is that the energy consumption declines, as loss declines.
  • An additional advantage is that the amount of a glue-bearing problem waste, including edge chips, which waste is usually burnt, declines to less than a half from the current situation, which reduces environmental hazards.
  • FIG 1 illustrates simplified and schematically the equipment in accordance with the invention seen from above
  • FIG. 2 illustrates simplified and schematically the equipment in accordance with the invention from the side view
  • figure 3 illustrates simplified and schematically the equipment in accordance with the invention from the front view
  • Figure 4 illustrates a dried veneer sheet seen from above and how a veneer sheet is cut in accordance with the invention.
  • Equipment in accordance with the invention shown in Figures 1-3 comprises at least a band convoyer being a sorting convoyer 1, by which veneer sheets 2 are guided after drying for measuring and to be cut from the angles to be essentially rectangular, as a functioning measuring element, into the contact with the sorting conveyor 1 accommodated image-processing camera 3, which is used to perform both grading of veneer sheets 2 of and also dimensioning of the veneer sheets 2 for the cutting, cutter 4 and storage media 7a, such as memory-supplied control unit 7, which has been arranged to control the functionality of different operational elements of the equipment.
  • image-processing camera 3 which is used to perform both grading of veneer sheets 2 of and also dimensioning of the veneer sheets 2 for the cutting, cutter 4 and storage media 7a, such as memory-supplied control unit 7, which has been arranged to control the functionality of different operational elements of the equipment.
  • Sorting conveyor 1 arranged to carry the veneer sheets 2 forward on the conveyor, is, for example, a conveyor equipped with the rolls placed slantwise in the forward end, in which forward end has at the other side edge a control response 11.
  • the conveyor 1 is a belt conveyor. Rotating rolls at the front end are accommodated slantwise so that when they push the veneer sheets 2 forward on the band conveyor 1, they push at the same time the other straight side surface of the veneer sheets against the control response 11, whereupon the veneer sheets 2 are settled during the conveyance movement straight and accommodated sideways to the same place in relation to each other so that the straight side edges of the veneer sheet 2 are at least during the cutting substantially parallel to the direction of motion of the veneer sheet 2.
  • the veneer sheets 2 When the veneer sheets 2 are accommodated to their place, they are held in position by means of a suction, which is directed to the veneer sheets underneath the sorting conveyor.
  • the veneer sheet 2 are accommodated to the sorting conveyor 1 one after the other and directed so that the grains of the veneers are substantially crosswise and perpendicular to the direction of movement of the veneer sheets.
  • an image-processing camera 3 which has been arranged to photograph veneer sheets 2 carrying along the sorting conveyor 1 under it.
  • the camera 3 is used in accordance with the solution of the invention at least to two different uses, i.e. according to the prior art technology as a grading camera and at the same time also as a measuring element in accordance with the invention, by which the veneer sheets 2 are dimensioned i.e. measured.
  • the camera 3 is adjusted to photograph the dimensions of the veneer sheet 2 passing under it and to register and also to save accurately sheet dimensions into the memory to the storage media 7a which are connected to the control unit 7.
  • the camera 3 can be also supplied with a control unit of its own, whereupon the camera 3 is adjusted to register and save the sheet dimensions to the memory of its own control unit.
  • the control unit of the camera 3 functions substantially similar to the above-mentioned control unit 7.
  • the cutter 4 consists of a supporting structure 5, to which it is hanged a blade unit accommodated above the conveyor 1 supplied with a rotating blade 6.
  • the cutter 4 is additionally equipped with a control and driving gear, under control of which the blade 6 is arranged to cut the excess edge off from the veneer sheet 2 in the lateral direction of the sorting conveyor 1.
  • the control and driving gear of the cutter are not illustrated in the figures.
  • a control response 11 does not extend to the cutter since at the cutter the sheet veneers will hold in position by means of a suction.
  • Below the blade 6 of the cutter 4 there is a rotating cradle roller against which the blade cuts the rear edge of the veneer sheet 2 straight. The veneer sheet passes at that time between the blade 6 and a rubber roller.
  • the cradle roller has not been illustrated in the figures.
  • Figure 4 illustrates a dried veneer sheet 2 seen from above, whose longitudinal sides of the grains, i.e. a front edge 9 and rear edge 10 of the sheet are no longer straight on account of the drying shrinkage and wood anisotropism. Transverse sides 8 of the wood grains are instead usually substantially straight because in this direction the veneer sheets substantially do not live.
  • the cutter 4 is arranged to cut the sheet to the desired form.
  • the figure 4 has an auxiliary line 12 drawn as a broken line, along which the cutter 4 is guided by means of the control unit 7 to cut at this veneer sheet 2 the excess parts off from the rear edge 10 of the sheet.
  • the straightening cut is substantially made in the longitudinal direction of the grains, i.e. perpendicular to the direction of motion of the veneer sheets 2.
  • the straightening cut is substantially made in the longitudinal direction of the grains, i.e. perpendicular to the direction of motion of the veneer sheets 2.
  • the veneers are measured and squared accordingly for example as follows.
  • the veneer sheets 2 are guided after the drying to the sorting conveyor 1, which is, for instance, an under-pressurised belt conveyor arranged to run at suitable speed.
  • the veneer sheets 2 are carried on the sorting conveyor 1 substantially one after another and in the forward end of the sorting conveyor one side edge pushed against the control response 11 under the grading camera used as the measuring element 3 of the veneer sheet, the camera 3 photographs the dimensions of the veneer sheet 2 and also registers and saves photographed dimensions to the storage media 7a which are connected to the control unit 7.
  • the photographed veneer sheet 2 is carried forward on the sorting conveyor 1 to the cutter 4 accommodated in connection to the sorting conveyor, with which if necessary it is cut the excess material off from the rear edge 10 of the veneer sheet 2 so that at least three sides of the sheet are after the cutting substantially straight and that adjacent sides of these sides are substantially at right- angles to one another.
  • the straight side edges 8 of the veneer sheet 2 are held during the cutting substantially parallel to the direction of motion of the veneer sheet 2 and the rear edge 10 of the veneer sheet 2 is cut on the basis of the dimension data provided by the measuring element 3 to substantially straight to the direction of motion of the veneer sheet 2 in a substantially transverse direction.
  • the cutter for cutting the veneer to the desired form could be instead of the rotary-bladed cutter some different cutter, for instance a circular saw, a bandsaw-like cutting wheel laser cutter, water cutter or any cutter suitable for the purpose.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Abstract

This invention relates to a method and equipment for measuring and squaring of a wood veneer, in which method veneer sheets (2) are carried after a drying at least on a sorting conveyor (1). The veneer sheet (2) is guided to the measuring element (3) accommodated to the connection of the sorting conveyor (1), by which at least part of dimensions of the veneer sheet (2) are measured and saved into a memory, after which the veneer sheet (2) is guided to the cutter (4) accommodated to the connection of the conveyor (1), with which the veneer sheet (2) is cut to a desired form by means of said dimensions of the veneer sheet.

Description

METHOD AND EQUIPMENT FOR DIMENSIONING AND SQUARING OF WOOD VENEER
This invention relates to a method presented in the preamble of claim 1 and to an equipment presented in the preamble of claim 5 for dimensioning and squaring of wood veneer in conjunction with drying.
Wood veneers are used as basic elements in the manufacture of plywood and, for example, also to coat different surfaces, including furniture and doors. The wood veneers are machined of warm, soaked wood stock by cutting, rotary cutting or planing, after which veneer sheets manufactured in such a way are dried with different drying means. The width of veneer sheets nevertheless varies several centimetres after the drying because the drying shrinkage is not constant. Additionally, there is skewness in the veneer sheets on account of the drying shrinkage and wood anisotropism. As a result dried veneers are neither rectangular nor of equal width. On account of these deformations caused by the drying there are defects in quality of the finished veneers and some raw material goes to waste, when for the piles one needs to use veneers, which has sides that are not straight. The problem is also a measure of the generated edge chips.
The target of this invention is to remove above-mentioned disadvantages and also to effect a simple, raw wood material- and glue-saving, fast and preferred and also industrially applicable method and equipment for dimensioning and squaring of wood veneer in conjunction with drying. A method in accordance with the invention is characterised by features presented in the characterising part of claim 1. Respectively an equipment in accordance with the invention is characterised by features presented in the characterizing part of claim 5. Other embodiments of the invention are characterised by features presented in other claims.
The process and equipment according to the present invention will be referred below with a common nomination 'a solution in accordance with the invention.' The advantage of the solution in accordance with the invention is among other things major saving of raw materials. Stock lengths in use can be made shorter, for example because required block measurements get shorter. Respectively, cutting width of the veneers can be narrowed because the veneers will be cut to the width in accordance with the block measurements. In the stock lengths the savings gained are approximately 3-4 % and gross measurements of veneers decline approximately 3-8 % depending on the measurement group. The advantage is also that the glue consumption declines as veneer gross measurements decline. An additional advantage is that the amount of undersized veneer will be very small because the veneers are dimensioned and rectangular. The advantage is also that production automation in the working phases following the drying will be facilitated significantly and quality improves because the veneer sheets are of fixed size and form. In that case, an additional advantage is that in connection with the veneer continuation the current problems are abolished since in conjunction with the continuation no more notches will be generated. Also for example in the piling considerable benefits will be reaped because out of the straightened veneers it is easy to make a dimensionally accurate pile with much smaller working allowance as currently. Further advantage is that the energy consumption declines, as loss declines. An additional advantage is that the amount of a glue-bearing problem waste, including edge chips, which waste is usually burnt, declines to less than a half from the current situation, which reduces environmental hazards.
In the following the invention is described in a greater detail by means of an example applying a solution according to the invention by referring to the accompanying drawings, where
Figure 1 illustrates simplified and schematically the equipment in accordance with the invention seen from above,
Figure 2 illustrates simplified and schematically the equipment in accordance with the invention from the side view, figure 3 illustrates simplified and schematically the equipment in accordance with the invention from the front view and
Figure 4 illustrates a dried veneer sheet seen from above and how a veneer sheet is cut in accordance with the invention.
Equipment in accordance with the invention shown in Figures 1-3 comprises at least a band convoyer being a sorting convoyer 1, by which veneer sheets 2 are guided after drying for measuring and to be cut from the angles to be essentially rectangular, as a functioning measuring element, into the contact with the sorting conveyor 1 accommodated image-processing camera 3, which is used to perform both grading of veneer sheets 2 of and also dimensioning of the veneer sheets 2 for the cutting, cutter 4 and storage media 7a, such as memory-supplied control unit 7, which has been arranged to control the functionality of different operational elements of the equipment.
Sorting conveyor 1, arranged to carry the veneer sheets 2 forward on the conveyor, is, for example, a conveyor equipped with the rolls placed slantwise in the forward end, in which forward end has at the other side edge a control response 11. At the rear end, the conveyor 1 is a belt conveyor. Rotating rolls at the front end are accommodated slantwise so that when they push the veneer sheets 2 forward on the band conveyor 1, they push at the same time the other straight side surface of the veneer sheets against the control response 11, whereupon the veneer sheets 2 are settled during the conveyance movement straight and accommodated sideways to the same place in relation to each other so that the straight side edges of the veneer sheet 2 are at least during the cutting substantially parallel to the direction of motion of the veneer sheet 2. When the veneer sheets 2 are accommodated to their place, they are held in position by means of a suction, which is directed to the veneer sheets underneath the sorting conveyor. The veneer sheet 2 are accommodated to the sorting conveyor 1 one after the other and directed so that the grains of the veneers are substantially crosswise and perpendicular to the direction of movement of the veneer sheets.
Above the sorting conveyor 1 there is accommodated an image-processing camera 3, which has been arranged to photograph veneer sheets 2 carrying along the sorting conveyor 1 under it. The camera 3 is used in accordance with the solution of the invention at least to two different uses, i.e. according to the prior art technology as a grading camera and at the same time also as a measuring element in accordance with the invention, by which the veneer sheets 2 are dimensioned i.e. measured. For the measuring of the veneer sheets the camera 3 is adjusted to photograph the dimensions of the veneer sheet 2 passing under it and to register and also to save accurately sheet dimensions into the memory to the storage media 7a which are connected to the control unit 7. The camera 3 can be also supplied with a control unit of its own, whereupon the camera 3 is adjusted to register and save the sheet dimensions to the memory of its own control unit. In which case the control unit of the camera 3 functions substantially similar to the above-mentioned control unit 7. After the photographing the veneer sheet 2 is guided under the camera 3 forward on the sorting conveyor 1, to the conveyor-connected cutter 4 accommodated in the direction of motion of the veneer sheets 2 after the camera 3, which has been arranged if necessary to cut oversizes in the direction of motion of the veneer sheets off the rear edge of the veneer sheet on the grounds of the registered dimensions by the camera 3 so that after the cutting at least two side edges and cut rear edge of the veneer sheet 2 is substantially straight and the rear edge is substantially at right- angles to the side edges.
The cutter 4 consists of a supporting structure 5, to which it is hanged a blade unit accommodated above the conveyor 1 supplied with a rotating blade 6. The cutter 4 is additionally equipped with a control and driving gear, under control of which the blade 6 is arranged to cut the excess edge off from the veneer sheet 2 in the lateral direction of the sorting conveyor 1. The control and driving gear of the cutter are not illustrated in the figures. A control response 11 does not extend to the cutter since at the cutter the sheet veneers will hold in position by means of a suction. Below the blade 6 of the cutter 4 there is a rotating cradle roller against which the blade cuts the rear edge of the veneer sheet 2 straight. The veneer sheet passes at that time between the blade 6 and a rubber roller. The cradle roller has not been illustrated in the figures.
Figure 4 illustrates a dried veneer sheet 2 seen from above, whose longitudinal sides of the grains, i.e. a front edge 9 and rear edge 10 of the sheet are no longer straight on account of the drying shrinkage and wood anisotropism. Transverse sides 8 of the wood grains are instead usually substantially straight because in this direction the veneer sheets substantially do not live. Into the contact with the sorting conveyor 1 accommodated camera 3 has been arranged to measure the dimensions of the veneer sheet 2, such as before it is described and on the basis of the measuring results the cutter 4 is arranged to cut the sheet to the desired form. The figure 4 has an auxiliary line 12 drawn as a broken line, along which the cutter 4 is guided by means of the control unit 7 to cut at this veneer sheet 2 the excess parts off from the rear edge 10 of the sheet. The straightening cut is substantially made in the longitudinal direction of the grains, i.e. perpendicular to the direction of motion of the veneer sheets 2. By cutting this way three sides of the sheet and angles between them can be obtained straight. Instead of the rear edge or in addition to the rear edge it is also possible to cut the front edge of the sheet straight in a corresponding way, but in practice this step is not needed because the sheets can be placed in the pile criss-cross with each other.
By a method in accordance with the invention the veneers are measured and squared accordingly for example as follows. The veneer sheets 2 are guided after the drying to the sorting conveyor 1, which is, for instance, an under-pressurised belt conveyor arranged to run at suitable speed. The veneer sheets 2 are carried on the sorting conveyor 1 substantially one after another and in the forward end of the sorting conveyor one side edge pushed against the control response 11 under the grading camera used as the measuring element 3 of the veneer sheet, the camera 3 photographs the dimensions of the veneer sheet 2 and also registers and saves photographed dimensions to the storage media 7a which are connected to the control unit 7. Hereafter the photographed veneer sheet 2 is carried forward on the sorting conveyor 1 to the cutter 4 accommodated in connection to the sorting conveyor, with which if necessary it is cut the excess material off from the rear edge 10 of the veneer sheet 2 so that at least three sides of the sheet are after the cutting substantially straight and that adjacent sides of these sides are substantially at right- angles to one another. When cutting the veneer sheet 2 the straight side edges 8 of the veneer sheet 2 are held during the cutting substantially parallel to the direction of motion of the veneer sheet 2 and the rear edge 10 of the veneer sheet 2 is cut on the basis of the dimension data provided by the measuring element 3 to substantially straight to the direction of motion of the veneer sheet 2 in a substantially transverse direction.
For those skilled in the art it is apparent that the invention is not limited exclusively to the above-presented example, but it can vary as presented in the patent claims below. Thus, for example, as a measuring element one can use some other measuring device than a grading camera.
For one skilled in the art it is also clear that the cutter for cutting the veneer to the desired form could be instead of the rotary-bladed cutter some different cutter, for instance a circular saw, a bandsaw-like cutting wheel laser cutter, water cutter or any cutter suitable for the purpose.

Claims

1. A method for measuring and squaring of a wood veneer, in which method veneer sheets (2) are carried after a drying at least on a sorting conveyor (1), characterised in that the veneer sheet (2) is guided to the measuring element (3) accommodated to the connection of the sorting conveyor (1), by which at least part of dimensions of the veneer sheet (2) are measured and saved into a memory, after which the veneer sheet (2) is guided to the cutter (4) accommodated to the connection of the conveyor (1), with which the veneer sheet (2) is cut to a desired form by means of said dimensions of the veneer sheet.
2. The method as claimed in claim 1, characterised in that while cutting the veneer sheet (2) straight side edges (8) of the veneer sheet (2) are held during the cutting substantially parallel to a direction of motion of the veneer sheet (2) and a rear edge (10) of the veneer sheet (2) is cut on the basis of dimension data provided by a measuring element (3) to substantially straight to the direction of motion of the veneer sheet (2) in a substantially transverse direction.
3. The method as claimed in claims 1 or 2, characterised in that the veneer sheet (2) is cut so that after the cutting at least the side edges (8) and rear edge (10) of the sheet are substantially straight and that angles between the rear edge (10) and side edges (8) are substantially right-angles.
4. The method as claimed in claims 1, 2 or 3, characterised in that as the measuring element an image-processing camera (3) accommodated to the connection with the sorting conveyor (1) is used, which is used to perform both grading of the veneer sheets (2) and dimensioning of the veneer sheets (2) for the cutting.
5. An equipment for measuring and squaring of a wood veneer, which equipment comprises at least a control unit (7), a sorting conveyor (1) arranged to carry the veneer sheets (2) composed of the wood veneer (2), characterised in that the equipment includes at least a cutter (4), which has been connected to the control unit (7) and
Which cutter (4) has been arranged to cut the veneer sheet (2) to a desired form so that at least the veneer sheet's side edges (8) and an edge between them (10) are after the cutting substantially straight and that the edge (10) between the side edges (8) is substantially at right-angles to the side edges (8).
6. The equipment as claimed in claim 5, characterised in that the equipment includes a measuring element (3) accommodated in a direction of motion of the veneer sheets (2) before the cutter (4), which is adapted to measure the dimensions of the passing veneer sheets (2) and deliver measuring data for a registration and saving to the storage media
(7a).
7. The equipment as claimed in claims 5 or 6, characterised in that as the measuring element (3) it has been adjusted an image-processing camera (3) being in the equipment for grading purposes.
8. An equipment as claimed in claims 5, 6 or 7, characterised in that the control unit (7) of the equipment is arranged to control the sorting conveyor (1), measuring element (3) and cutter (4).
9. The equipment as claimed in any of the claims 5-8 above, characterised in that the cutter (4) is a rotary-bladed cutter which includes at least a supporting structure (5) and also a rotating blade (6).
10. The equipment as claimed in any of the claims 5-8 above, characterised in that the cutter (4) is a circular saw, bandsaw-like cutting wheel, laser cutter, water cutter or any cutter suitable for the purpose.
PCT/FI2007/050190 2006-04-18 2007-04-04 Method and equipment for dimensioning and squaring of wood veneer WO2007118932A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07730677A EP2007559A4 (en) 2006-04-18 2007-04-04 Method and equipment for dimensioning and squaring of wood veneer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20065239A FI20065239A (en) 2006-04-18 2006-04-18 Method and apparatus for measuring and making veneer rectangular
FI20065239 2006-04-18

Publications (1)

Publication Number Publication Date
WO2007118932A1 true WO2007118932A1 (en) 2007-10-25

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Application Number Title Priority Date Filing Date
PCT/FI2007/050190 WO2007118932A1 (en) 2006-04-18 2007-04-04 Method and equipment for dimensioning and squaring of wood veneer

Country Status (4)

Country Link
EP (1) EP2007559A4 (en)
FI (1) FI20065239A (en)
RU (1) RU2423228C2 (en)
WO (1) WO2007118932A1 (en)

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CN116175659A (en) * 2023-02-23 2023-05-30 浙江国立包装有限公司 Processing equipment for forming plate by replacing wood with paper and production method thereof

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CN116175659B (en) * 2023-02-23 2023-09-19 浙江国立包装有限公司 Processing equipment for forming plate by replacing wood with paper and production method thereof

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EP2007559A1 (en) 2008-12-31
RU2423228C2 (en) 2011-07-10
FI20065239A0 (en) 2006-04-18
FI20065239A (en) 2007-10-19
RU2008145489A (en) 2010-05-27
EP2007559A4 (en) 2012-03-14

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