FI81516C - Procedure and plant for the treatment of wood - Google Patents

Description

The invention relates to a method and an apparatus for the treatment of timber. The invention relates to a method and an apparatus for the treatment of timber.

A major problem in cutting timber blanks is the high percentage of scrap timber. In the cross-cutting of timber blanks, it has not been possible to minimize wood waste in the best possible way.

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It is an object of the invention to provide a method and apparatus by which commodity blanks can be mediated with the best possible efficiency. It is also an object of the invention to provide a method and apparatus in which a saw is flexibly conveyed from a conveyor via a measuring station 15 to a cross-sawing device which makes cuts taking into account the lengths and dimensions of the timber blanks and the dimensions and lengths of the final products.

The method according to the invention is mainly characterized in that the timber blanks arranged on the second conveyor are measured by a measuring device before they are moved by that second conveyor to be sawn by several adjustable adjacent saws, and in the method the central unit is adapted to produce and calculate the on the basis of the blank lengths, the minimum wood waste, in which case the optimization is carried out in the period during which the timber blank passes from the measuring device to the sawmills or the optimization is performed in advance at the central unit. a predetermined cut-off for the identified timber blank through optimization.

The apparatus for handling timber according to the invention is mainly characterized in that the apparatus comprises a measuring device in front of adjacent sawmills with respect to the timber transport direction and in that the apparatus comprises a central unit, preferably a computer or a microprocessor, adapted to produce and count 81 51 ό o 1 on the basis of the sawn lengths measured and fed to the central unit, the optimum sawing result, i.e. the minimum wood omission, in which case this optimization has been carried out in the time has calculated the pre-optimum cut-off and the measuring device only identifies each timber blank in the timber batch, then performs it on the identified timber blank through optimization a predetermined cut, and that the apparatus 10 accesses the stocks of the sawn timber component, wherein the timber components are sorted based on the timber component and transferred to its determined warehouse based on the size of the timber component.

In the method according to the invention, in its first preferred embodiment, controlled cutting lengths are input to a computer or microprocessor and a program in the computer calculates different sum variations of said desired cutting lengths and compares them with a measuring device, preferably a line camera, to each length, the smallest timber residue for the timber blank.

The apparatus according to the invention comprises the advantageous! three timber conveyors. However, there may be fewer timber conveyors, but at least 25 one. The piece of timber is first machined to specified dimensions, e.g. split into timber blanks of specified thickness, and these timber blanks are transferred either by hand or by a separate conveyor to the conveyor of the measuring and cross-haul station. With this conveyor, the timber blank is measured and, after the measurement, transferred to the cross-cutting units, which perform the cross-cutting of the timber blank on the basis of optimization by a computer or a microprocessor.

The cross-sawn timber components are dropped or transferred to a conveyor after the blade-snowing unit, from where they are further removed to 35 sorting stations. At the sorting station, each timber component is transferred to its own warehouse, which preferably comprises timber components of the same length. With the method and apparatus according to the invention

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3 81 516 1 cross-sawing waste has dropped by up to 20% compared to prior art solutions.

The invention will now be described with reference to some preferred embodiments of the invention shown in the drawings of the accompanying figures, to which, however, the invention is not intended to be exclusively limited.

Figure 1A shows the method and apparatus according to the invention in a partially schematic representation.

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Figure 1B shows the terminology used for timber in the description of the invention.

Figure 2A shows the use of a line camera according to the invention in determining the length R of a wood-15 blank.

Figure 2B shows the use of a line camera according to the invention in determining the width R of a timber blank.

Figure 2C shows the determination of the height dimension of the timber blank R using a pivoting lever device.

Figure 2D shows the use of a line camera in determining the quality of a timber blank R. The camera detects a knot in the timber blank.

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Figure 3 illustrates the optimization performed in the method according to the invention and a preferred embodiment thereof.

Figure 4 shows one of the 30 parallel saws of a timber blank cross-sawing device. The view is a machine direction cross-sectional view.

Figure 5 shows a schematic representation of an embodiment of a sorting unit for sawn timber blanks.

Figure 6 shows another preferred embodiment of the saws of the cross-cutting unit.

Fig. 7 schematically shows the operation of the embodiment of Fig. 6.

Figure 8 shows a third preferred embodiment of cross-cutting units.

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As shown in Fig. 1A, an apparatus 10 for handling timber is comprised of a "first timber conveyor, preferably an endless belt conveyor, a second timber conveyor 12, which is preferably an endless koLn conveyor, and a third timber conveyor 13, which is also preferably an endless belt conveyor. move substantially perpendicular to the conveying direction of the second timber conveyor 12 and the third timber conveyor 13 is adapted to convey the timber substantially perpendicular to the direction of travel of the second timber conveyor.

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Figure IB shows the names used for timber in the description of the invention. The device solution according to the invention has been described above by using the name timber piece from the timber source and marking it with the letter symbol R 1. For the purposes of this description, a timber blank device generally refers to a device for splitting and / or planing a piece of timber Rq. In the above description, the piece of timber coming from the timber blank device is marked with the letter R and in the description it is referred to only as a timber blank. Cross-sawn timber blanks are marked with the subscripts R ,, R0 .... and use the timber component 25.

The apparatus comprises a central processing unit 14, which may be a computer or a microprocessor. A saw guide 16 is arranged above the second timber conveyor 12. As shown in Fig. 1A, a plurality of saws 15a, 15b, 15c and 15d to be arranged simultaneously are arranged in the guide 16. However, not all saws 15a, 15b, ... need to operate simultaneously and some saws may be at rest during cross-cutting. The saws are arranged in the guide 16 transversely to the passage of the second timber conveyor 12. direction. For said second timber conveyor 12, timber blanks are guided from the first timber conveyor 11 so that the pieces of timber, preferably split, machined to specific dimensions are fitted transversely to the conveyor 12 and transported to the measuring device.

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81516 5 ^ 26 or via a sensing device next to the guide 16 and the saws 15a, 15b, 15c and 15d. The device 26 is referred to above only as a measuring device, which generally means a device which detects at least the length of a timber blank.

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Before the second timber conveyor 12 moves the timber blank introduced to the conveyor below the saw control unit 16 and the saws 15a, 15b, 15c, 15cl, the length 7 of the timber blank R is measured by a measuring device 26, most preferably an optical line camera. The measurement data is transmitted from the mxttnlait-10 via the telecommunication data bus 18 to the central processing unit 14. The central processing unit 14 is preferably a microprocessor or other similar computer which processes the measurement data along the data bus 18 and transmits it via the bus 15 after optimization , 15c and 15d 15 to the controller, the saws immediately moving the saws L1a, Lj1, Ljc and L1 to the desired position in the guide 16 to start sawing the timber blank R measured from the desired points.

At the same time, information is passed along the data buses 21 ', 21 ", 21'" to the sorting units 17a, 17b and 17c from the cross-cut timber blank to deliver the timber component R 1, R 2, R 2 ... of each blank R to its own stack or warehouse A 1, A0 and A2 from the conveyor 13. The sorting units 17 preferably comprise a pusher 17a ', 17b', 17c 'or the like adapted to move the stop 17a ", 17b", 17c ". The stop is adapted to move the timber component at the stop 25 and R 1 to the desired position. in this embodiment of the invention, the sorting unit 17 directly receives information about the cross-sawn timber components R 1, R 2 ..., whereby the sorting unit 17 only needs to identify how many timber components R 1, R 2. .. for each sorting unit 17a, 17b 30. Thus, in this embodiment of the invention, the sorting unit 17a, 17b, 17c no longer needs to identify the length of the timber component R1, R2 · .. therefore, no separate measuring devices are required in this respect for the sorting unit 17.

35 On said second timber conveyor 12, the timber piece Ro is transferred from the first timber conveyor 11 via the processing unit 22. By working unit 22 is meant here a device for processing a piece of timber Rq 81 516 6 Ί, by means of which a piece of timber Rq is either planed and / or split and / or sawn into timber blanks R of a certain thickness R. The timber conveyor 11 may preferably comprise a first conveyor part 11a to the processing unit 22 and the timber conveyor 5 can comprise a timber conveyor section 11b behind the conveyor, by means of which the processed timber pieces R 1, i.e. the timber blanks R, are transferred to another timber conveyor 12. The processing unit 22 comprises vertical cutters or corresponding, by means of which the timber is transferred to the cutting 10s, for example to a splitting blade and further to another timber conveyor 12 via a conveyor section 11b. An embodiment of the invention is also possible, in which the machining unit 22 planes the piece of timber into fixed or fixed parts.

Along the bus 27, information is transmitted from the central unit 14 about the output dimensions and the desired dimensions of the timber piece R to the machining unit 22, which performs the machining to these desired dimensions.

In the method according to the invention, the wood processing is fast with the saws 20 15a, 15b, 15c and 15d being adapted to saw simultaneously and the center unit 14 simultaneously setting the saws 15a, 15b, 15c and 15d to the correct optimum position to leave the smallest sawn timber R sawing surplus.

The optimization of the cutting takes place in the method and device solution according to the invention in such a way that at least the desired timber blank lengths L 1, L 2 and L 2 are fed to the central unit 14 as output data. The central processing unit 14 according to the invention calculates different cutting variations for each timber blank length L 1 measured by the measuring device 26. For each of the 30 cutting options, the corresponding timber blank R is calculated and the position of the sawmills 15 with the wood blank R_ is selected. is the smallest. The central processing unit 14, preferably a computer or a microprocessor, calculates the different cut-off variations so that the sums of the output data and the desired measuring lengths L., L _... are calculated and formed by that sum and the line al az

35 the difference in the length of the piece of timber to be sawn, measured with a camera 26 or similar device, and the cutting option with which this difference is the smallest possible, i.e. the timber blank R

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7 81 516 1 is minimized. From this selected information, corresponding information goes to the sorting unit 17, so that the sorter 17 knows how to sort each sawn timber component, etc. into the desired warehouse or stack as the timber components come to the sorting units 5 17a, 17b, 17c ... etc. The warehouses Α ^, Α ^, Α ^ ... etc. are arranged on the opposite side of the third timber conveyor 13 as shown in Fig. 1A to the respective sorting units 17a, 17b, 17c. The input of the timber components to each sorting station 17a, 17b and 17c can be detected by a sensor device, sensor sensors, e.g. photocells 10 or the like.

Figure 2A shows the use of a line camera 26 according to the invention in determining the length Lj of a timber blank R. Figure 2B shows the use of a corresponding line camera or another line camera 26 in determining the width R of a wood-15 billet.

Figure 2C shows the determination of the height R of the corresponding timber blank using a sensor device comprising a lever Mj and a rotating roller M1 at its end. Upon arrival at the timber conveyor 12 by the timber conveyor 12, the lever Mj is raised by the timber blank R and a potentiometer or similar device at the end of the lever Mj detects an angle change of the lever Mj, which angle change indicates the height dimension L 1 of the timber blank R. The width and height dimensions of the timber (Ι ^, Ι · ^) and the desired length dimensions for these 25 dimensions can be entered into the computer as input data for the optimization. Thus, in the optimization, the width and height of the timber blank, i.e. the type of wood blank, measured by the line camera 26 are first identified, and only then is the optimization performed on the type of timber blank based on the desired lengths.

Figure 2D shows the use of a line camera 26 or similar device for monitoring timber quality. The line camera with its peripherals detects, for example, a branch of a wood defect in the timber blank R, whereby the optimization program in the computer 14 performs sawing with transverse saws 15 at e.g. fj and f ^ (Fig. 2D). In this case, only 35 branchless timber is produced without branches. Thus, the optimization program can be designed in such a way that it also takes into account the quality of the timber and avoids knots in the final timber.

81516 8 1 Figure 3 shows an optimization according to the invention. The timber blank batch E is brought to the sawmill and the information on the timber blank lengths in the timber blank batch E is known in advance on the product card. The timber blanks should be sawn to the desired length and the computer or microprocessor 14 according to the invention performs the optimization described above, and thus the central unit 14 assigns a specific cutting event to each timber blank R in the batch E. The information about the desired cuts is in the memory of the unit 14 and in the next step when the timber blanks R pass on the second timber conveyor 12 a measuring device, 10 preferably a line groove 26 measures each timber blank R 1 and travels along the bus to the CPU 14. The CPU 14 compares and identifies the timber blank R in question and selects the cut given to it from the memory by the optimization program, i.e. the exact position of the saws 15a, 15b, 15c 15 at which the saw or saws perform the cross-cutting of the timber blank R. This optimization method offers many advantages. The method can be used to process a considerable amount of information on a computer 14 in advance. Thus, the optimization event may comprise the processing of several timber items Ε ^, Ε ^ ... in the optimization program, and thus the optimization result can be considerably improved.

Instead, in the optimization method in which the optimization event occurs immediately in the time zone when the bar has left the camera station and the measuring station of the conveyor 12 and entered the cross-cutting station 25, the small size of that time interval sets limits for performing the optimization. In this case, there may be a relatively small number of desired measurement lengths to be output, because the time that the timber blank passes from the camera station to the machining unit 22 is small and during that time the computer 14 must have time to perform the optimization.

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The optimization according to the invention can advantageously also be performed in such a way that the position of the saws 15a, 15b, 15c before the cross-cutting is taken into account, whereby the cross-cut with the shortest travel to the new sawing point 35 is selected to perform the cross-cutting.

Fig. 9 81516 1 Fig. 4 shows one of the saw units 15a of the cross-cutting station in a cross-sectional view in the direction of the second conveyor 12. As shown in the figure, the cutting saw is formed by adjacent sawing units 15a, 15b, 15c ... Figure 4 shows one of the adjacent sawing units unit 15a.

It comprises a body 150 adapted to move in guides 16 by means of bearing means 151. The body 150 is moved by a motor 152 which further engages the rack 154 by gears 153 or the like. The body 150 comprises a pivot arm 155 to which a saw blade 156 and its drive motor are attached. 157. Preferably, the motor 10 157 via a belt 158 drives a saw blade 156. A cylindrical device, preferably a pneumatic cylinder 159, is adapted to pivot the pivot arm 155 about a hinge point G1.

The timber blank R is adapted to move from the conveyor 12 behind the abutment portion 12a 15 over the swivel wheel 12b to the sawing station D against the machine frame 150. The timber blank R drops on the pivotable abutment portion 160 and the frame 150 and is held in place in a precise position.

When the frame 155 with its saws is turned against the timber blank, the rotating saw blade 20 cuts the bar at the desired point. After sawing, the cylinder device 162, preferably the pneumatic cylinder, is adapted to pivot such a position that the abutment part pivots on the bearing and the timber components R 1, R 2 ... of the truncated timber blank R are adapted to drip onto the conveyor 13 below the structure. for sorting into warehouses Α ^, Α ^ ...

Fig. 5 shows a sorter 13 'arranged on a conveyor 13, comprising a belt T1 passed over the end wheels, with abutment parts and T1 downstream of the belt, between which the timber component R 1, R 2 ... R 1 R 2, R 2 · is arranged to move. can be moved to the storage station A2 or to the storage station A2 on either side of the conveyor 13 by moving the belt in either direction.

Figure 6 shows another preferred embodiment of a sawing unit. In the previous embodiments of the invention described above, the saws 156 of the sawing unit were adapted to saw the timber blank R perpendicularly so that the plane y of the saw blade 156 was substantially perpendicular to the longitudinal axis y of the timber blank R. In the embodiment of the invention shown in Figure 6, each saw unit 150, which is several in parallel, is adapted to saw the timber blank R also obliquely. This is especially necessary for optimal-5 sawing of timber parts in house packages. According to the invention, pltuus optimization is first performed as described above. The optimization is performed so that the minimum timber waste is achieved. The desired end bevels of the timber blank R are also set as input data in the memory of the computer and the microprocessor. Thus, according to the invention, there is implemented a device-10 solution in which each adjacent sawing unit 150 is adjustable from the saw blade 156 so that cross-cutting of the timber blank R can also be performed obliquely.

As shown in Figure 6, each sawing unit 150 comprises a first frame 170 and a second frame 171. An arm 155 is pivotally attached to the first frame 170 relative to the pivot point. Attached to the arm 155 is a motor 157 for rotating the saw blade 156, which is adapted to rotate the saw blade 156, preferably via a belt 158. A cylinder 159, preferably a pneumatic cylinder, is fitted between the stem 155 and the body 20 170 and articulated from both the cylinder body and the end of the piston rod. In this embodiment of the invention, the first body 170 is articulated and secured to the second body 171 so that said first body 170 and its associated devices are pivotable about a central axis of the pivot plate 170 '. Associated with the first body 170 is a shank portion 172 through the groove 173 of the second body 171, which is associated with bearing means 174 on which the body 170 is pivotable about an axis X1. There are two said suspension means 174,172,173, preferably on opposite sides of the turntable 170 '.

The first frame 170 is associated with a rotary motor 175, preferably a stepper motor, to the shaft 175 'of which a gear 176 is connected, which operatively engages a non-rotatable second frame 171, preferably a rack 177 on its side. The rotary motor 175 can also be housed in the second frame 171. wherein the gear 176 35 engages the gear ring 177 of the pivotable first body 170.

By means of the motor 175, the body 170 can be rotated about the axis X 1.

Il 81516 11 1 In this embodiment of the invention, the timber blank R is dropped into a separate sawing station D. It consists of a fixed body 178 which is in a fixed position relative to the conveyor 12. Hinged to the body 178 is a pivotable stop portion 160 which is pivotable about a pivot point by means of a cylinder device 162, preferably 5 pressure cylinders. In the embodiment shown in Figure 4, each sawing unit 15a is moved to the sawing position before the timber blank R is dropped on the parts 160 and 150. In the embodiment of Fig. 6, each sawing unit 15a can still be moved when the blank R to be sawn is in the sawing position 10 on the parts 178 and 160.

Figure 7 shows a schematic view of the operation of the turning device according to the invention. In the figure, the second body part 15171, which moves in the guides 16 on the bearing means 151, is removed from the top of the turntable 170 '. As shown in the figure, said body part 171 is moved aside from the top of the first body part 170, its turntable 170'. As shown in the figure, the turning plate 170 'can be pivoted about a central axis, and thus the direction of the sawing plane y1 of the saw blade 156 shown in broken lines in the figure can be changed with respect to the longitudinal axis y1 of the timber blank R. The desired bevel angle is denoted in the figure by: (: 11a. Thus, after setting the length optimization, the desired bevel angle for each saw of the sawing unit 15a, 15b ... is also obtained for the timber blank R to be cut for each component R ^ .R ^ ... the desired end bevel c < The grooves 173 in the second body 171 may be parts of an arc of a circle 25, and correspondingly the toothing 177 at the edge of the second body 171 may extend only to a part of the circumferential length.

A number of preferred embodiments of the invention have been described above, but it is clear that the solution according to the invention can deviate considerably from the embodiments described above within the scope of the claims. Advantageously, the cross-cutting station can also consist of cross-sawing cross-saws. In this case, each saw unit can be moved linearly laterally and can also preferably comprise a belt conveyor, preferably a cola conveyor, on which the timber blank 35 is transferred from another conveyor 12. The timber saw conveyor of the cross-cutting unit feeds the timber into the raised saw blade. The saw blade can be turned by separate devices to perform the oblique sawing of the end of the timber blank 81516 12 1. Each adjacent cross-saw unit 15a, 15b ... may comprise its own separate coulter conveyors for further feeding the timber blank fed to them against the raised saw blade. The cross-saws and their cantilever conveyors are movable 5 laterally on separate fixed guides, and there are numerous side-by-side cross-saw units.

Figure 8 shows the above-mentioned bottom-sawing solution of the invention. Figure 8 is in principle a side view of the equipment solution for the jigsaw-10 unit. The second conveyor 12 comprises two conveyor sections 12 ', which are adapted to transfer the timber blank R to the measuring station and to the line camera 26. Said first conveyor section 12 'transfers the timber blank R to the second conveyor section 12 ". The timber conveyor section 12" is located in the cross-cutting unit 15a, 15b ... Each parallel cross-cutting unit 15a, 15b ... has its own cola conveyor 12 ". "is attached to the body of each cross-cutting unit 15a, shown in Fig. 8 by the letter m. Attached to the body m is a further pivotable arm 155 which can be lifted by a cylinder device, preferably a compressed air cylinder 159 20, above the upstream plane of the coulter conveyor 12". the arm 155 is further associated with a device for rotating the saw blade 156, not shown separately in Fig. 8. The conveyor portion 12 "is adapted to feed the timber blank R against the rotating raised saw blade 156.

Furthermore, each unit 15a, 15b is adapted to move laterally on the guides 16 on the body m. Based on the optimization program, each cross-sawing unit 15a, 15b ... is given the desired lateral position. The figure indicates the raising of the saw blade 156 to the upper position by the arrow tj. The movement of the timber blank by the conveyor section 12 "is indicated by the arrow t ^ and the transport of the truncated timber component by the third conveyor 13 is indicated by the arrow t ^. The lateral movement of the unit 15a to the desired position determined by the optimization is indicated by the arrow t

The figure also shows changing the direction of the sawing plane of the saw blade 151 in a manner similar to the embodiment of Fig. 6 (arrow t ,.). The arm 155 with its cylinder devices 159 and saw blades 156 is connected to the frame m ',

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13 81 516 1 which is further reversible with respect to the base frame m. When performing oblique cross-cutting, the cylinder device 159 only raises the saw blade 156 when the timber blank R to be sawn is above the blade 156. The stepper motor 175 or the like is adapted to engage with a toothed ring 177 or the like placed on the edge m 'of the frame 17' moving by its gear wheel 176.

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Claims (15)

81 516 14 1 Claims A method for processing timber, in which the timber is transported by at least one timber conveyor, in which method 5 the timber is cross-cut into several parts simultaneously by several saws, in which the timber piece (R0) is split and / or sawed and / or planed directly into dimensioned timber blanks (R) for the second timber conveyor (12) and in which method the timber blanks are conveyed to the second timber conveyor (12) transversely and in the method the position of the sawmills (15a, 15b, 15c, 15d ...) and the timber blank (R) ) the cutting points are determined on the basis of the position data of the saws (15a, 15b ...) produced by the central unit (14), preferably a computer or a microprocessor, which achieves a mini-15 wood waste (Rj) for each timber blank (R) to be cut, characterized in that the other -to which timber blanks are measured with a measuring device (26) before being moved by said second conveyor to be sawn by a plurality of adjustable adjacent saws (15a, 15b, 15c, 15d) and that in the method the central unit (14) is adapted to produce and count 20 measuring devices (26) before the saws (15a, 15b, 15c); 15d) on the basis of the measured and desired timber blank lengths fed to the central unit (14), the minimum wood drop (Rj), said optimization being performed during the time the wood blank (R) passes from the measuring device (26) to the sawmills (15a, 15b ...) or optimization in advance by the central processing unit (14), whereby the computer has pre-calculated the timber batch (E) for each timber blank (R) by means of an optimum cut-off and the measuring device (26) only identifies each timber blank (E) and then executes the identified timber blank (R); ) through optimization a predetermined cut-off. 30 A method according to claim 1, characterized in that in the method, the timber blank sawed across the saws (15a and / or 15b and / or 15c and / or 15d) (R 1) is transferred from said second conveyor (12) to the sorting unit (17), in which the sawn 35 parts (R1, R2, R3) of the timber blank (R) are transferred to their own warehouses (A1, A2, A3) Il 81 516 15 Method according to claim 1 or 2, characterized in that the method measures the timber blanks (R) passing through the second timber conveyor (12) and transmits said length information along the bus (18) to a central unit (14), preferably a computer or a microprocessor on the basis of the desired timber blank lengths (L., L 0, L _) entered into it, the one that produces the minimum timber clearance (R ^) is calculated from the different cutting length options. Method according to one of the preceding claims, characterized in that the sum of the variations of the desired timber blank lengths (L. + L 9; L. + L + L_; L, +1, _...) 31 3/31 is formed. 3Z 3v 31 3.J and the difference between the length of the timber blank (L) observed with the measuring device (26) and select it from the cutting variations with the smallest difference. Method according to one of the preceding claims, characterized in that the data is fed to the central processing unit (14) for information on a plurality of timber blanks and said plurality of timber blanks are processed by a microprocessor or the like in an optimization program before setting and using saws (15a, 15b, 15c, 15d). -20 from and before transferring the timber blank (R) to be cut to another conveyor (12). Method according to one of the preceding claims, characterized in that in the method the timber is fed transversely to a second timber conveyor (12) from a first timber conveyor (11) adapted to move substantially perpendicular to the direction of movement of the second timber conveyor (12), and in the method, the timber is transferred from the first timber conveyor (11) to the second timber conveyor (12) via a processing unit (22) adapted to process the timber piece (R0) into timber blanks (R) of the desired length. Method according to one of the preceding claims, characterized in that in the method the timber blanks are transferred from a second timber conveyor (12) to a third timber conveyor (13) arranged in a direction substantially perpendicular to the direction of travel of the second timber conveyor (12). , the method 16 81 516 1 using a sorting unit (17) comprising a plurality of sorting stations (17a, 17b, 17c) adjacent to the third timber conveyor (13), whereby on the basis of the sawing records of the timber blank (R) produced from the central unit (14) each timber component (R1, R2, R3) to its respective sorting station (17a, 17b, 17c) and through it to a storage of timber blanks of the same size (A1, A2, A3). Method according to one of the preceding claims, characterized in that the measuring device (26), most preferably the line camera 10, detects the knots in the timber blank (R) and performs sawing (fj, f2) so that the knot does not remain in the final product. Method according to one of the preceding claims, characterized in that after the length optimization, the desired angle of inclination (a) is set for each cross-saw (15a, 15b), each saw (15a, 15b) being rotatable by its body (170) in its vertical axis (X ) to achieve the desired bevel angle (a). 111 Apparatus for handling timber, which apparatus comprises adjacent saws (15a, 15b, 15c and 15d) arranged in connection with 20 second timber conveyors (12) and which apparatus comprises a central unit (14), the adjacent saws (15a, 15b, 15c, 15d) being adapted to saw the timber blank (R) simultaneously on the basis of the distance information of the saws produced from the central unit (14), preferably a microprocessor, characterized in that the apparatus comprises a measuring device (26) before the adjacent saws (15a, 15b, 15c and 15d) ) and that the apparatus comprises a central processing unit (14), preferably a computer or a microprocessor, adapted to produce and calculate the timber measured before the saws (15a, 15b, 15c, 15d) and the desired timber input to the central processing unit (14). on the basis of the blank lengths, the optimum sawing result, ie the minimum wood omission (Rp, in which case this optimization has been performed s in the time interval in which the timber blank (R) passes from the measuring device (26) to the sawmills (15a, 15b ...) or the optimization has been performed in advance by a computer (14) or the like, whereby a timber-35 batch (E) for each timber blank (R) ) the computer has calculated a pre-optimum cut-out and the measuring device (26) only identifies each timber blank in the batch, after which a predetermined cut is performed on the identified 81 516 17 1 timber blank (R) through optimization, and that the apparatus comprises a timber blank ( R) for sawn timber components (Kj »R ^ .R ^ ···) stocks (Aj ,, A ^ ...), whereby the timber components (R ^ .F ^ R ^ · · ·) are sorted by timber component (R ^ ..) 5 dimensions and transferred to the timber component (R ^ »R ^ R ^. · ·) To its stock determined by size. Device according to the preceding claim, characterized in that the apparatus comprises, after adjacent saws (15a, 15b, 15c, 15d) 10, a sorting unit (17) adapted to transfer timber components of the same length based on the sawing information of the timber blank (R) received from the central unit (14). (RpR ^ .R ^) to the desired timber blank stock (A., A0, A,). Apparatus according to one of the preceding claims 10 to 11, characterized in that the apparatus comprises a machining unit (22) upstream of the measuring device (26) and a first timber conveyor (11) connected to the machining unit perpendicular to the second timber conveyor (12). ) is transferred via the working unit (22) to another timber conveyor (12). Apparatus according to one of the preceding claims 10 to 12, characterized in that the measuring device (26) is a line camera. Apparatus according to one of the preceding claims, characterized in that the apparatus comprises means, preferably a stepper motor (175), for rotating the saw blade body (156) of the saw blade (15a, 15b ...) about a vertical axis (X 1), whereby the device provides the desired bevel angle («.) for performing bevel cross-cutting. 30 Apparatus according to the preceding claim, characterized in that the apparatus comprises a first body part (170) and a second body part (171), which first body part (170) with its saw blades (156) is pivotable a vertical axis (X 1) around the bearing means (172) and the apparatus also comprising bearing means (151) with which the second body part (171) and the first body part (170) operatively connected thereto can be moved in a straight line in the guides (16) . 18 81516