Method for producing wooden boards and wooden-board production apparatus
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HOLZBAU UNTERRAINER GMBH
- Filing Date
- 2026-01-21
- Publication Date
- 2026-07-30
Smart Images
Figure AT2026060013_30072026_PF_FP_ABST
Abstract
Description
[0001] The present invention relates to a method for producing wooden boards in a wooden board manufacturing device, wherein each wooden board has a top surface, a bottom surface, two elongated side surfaces, and two end faces, the distance between the top surface and the bottom surface corresponding to the board thickness and the distance between the two elongated side surfaces corresponding to the board width. The invention further relates to a wooden board manufacturing device, in particular for carrying out such a method.
[0002] There are wood panel manufacturing machines on the market that can produce larger wooden panels from pre-sorted, uniformly wide boards and also cut them to size again. One example is the Weinig Profipress T4500 machine. This system can perform the following steps: - Feeding wooden boards,
[0003] - Applying glue to the sides of the wooden boards,
[0004] - Pressing the wooden boards together and simultaneously clamping or holding down these pressed-together wooden boards,
[0005] - The glue hardens, resulting in a glued wooden board, and
[0006] - If necessary, cut off sections or trim the glued wooden panel.
[0007] This well-known system has some disadvantages, however. For example, it is relatively large and requires an area of approximately 500 m². 2Therefore, a large hall is necessary. Each board travels a relatively long distance, approximately 60 meters. The machine is inflexible in terms of board width and requires intensive maintenance. The necessary pre-sorting of the boards is also very time-consuming, meaning only boards of the same width can be fed into the machine. The machine has high energy consumption and also high investment costs (approximately €2 million). There is also an increased fire risk associated with the high-frequency press.
[0008] Patent EP 2251 168 A1, which describes a method for manufacturing wood panels, is also known from patent literature. This method uses wooden boards of the same width and thickness, differing only in length. These boards are glued together along their top and bottom surfaces to form a block, which can then be cut into core layers using a rip saw. A disadvantage of this method is the requirement for a consistently high quality of boards of the same width and thickness, necessitating extensive pre-sorting. The length measuring station only records the different lengths of the boards, not their widths. US 6,748,995 B2 describes a machine in which boards of varying widths are glued together to form a wood panel. Boards of any desired width are then cut from this panel.This system requires a lot of space and electricity, and with its three stations, it is relatively complex. The boards must be pre-planed. Only boards up to approximately 1.5 meters in length can be processed.
[0009] EP 2295215 A1 discloses a device for manufacturing a solid wood panel, in which each piece of lumber is profiled with a calculated cutting line. This is very complex, as each panel must be individually milled to achieve the curved profile.
[0010] Other general writings are US 2,366,588 A and US 2,453,185 A.
[0011] The object of the present invention is therefore to provide an improved method for manufacturing wooden boards and an improved wooden board manufacturing apparatus. In particular, the disadvantages mentioned above are to be overcome. Above all, the method should be space-saving, efficient, fast, require no pre-sorting, and be inexpensive to implement.
[0012] This is achieved by a method with the features of claim 1. According to the invention, the following steps are provided:
[0013] - Feeding wooden boards of different widths, in particular centimeter-sized boards, with a feeding device, wherein a first wooden board has a different width than a second wooden board,
[0014] - Clamping the first wooden board across its top and bottom surfaces in a first clamping device,
[0015] - Clamping the second wooden board over its top and bottom surfaces in a second clamping device,
[0016] - Applying glue to one of the facing sides of the first or second wooden board,
[0017] - Pressing the first and second wooden boards together over their facing sides using a pressing device,
[0018] - The glue hardens, resulting in a glued wooden board, and
[0019] - Cutting wooden boards of uniform width from the glued wooden panel using a cutting device. This eliminates the need to feed in pre-sorted boards of the same width; instead, unsorted "useless" centimeter-long boards can be fed in and upgraded to high-quality wooden boards with a uniform width.
[0020] Bundles of centimeter-sized lumber are a byproduct of sawing logs in sawmills. During sawing, the most valuable pieces—the main timber—are selected, while the less valuable side boards are cut out. Long boards, usually of relatively narrow width and low quality, remain as centimeter-sized lumber. Sorted centimeter-sized lumber fetches approximately €150 per square meter on the market. 3 However, the costs for transport, de-battening, stacking, sorting, and loading must be deducted. This leaves approximately 50 euros per m². 3 as income.
[0021] In contrast, the wooden boards of uniform width produced using the present method according to the invention can be manufactured for a price of approximately 250 to 300 euros per m². 3 This can be achieved. Thus, the present invention offers a way to refine centimeter-sized material into a main product. Furthermore, relatively low investment costs of approximately 700,000 euros are required, and only an area of about 50 m² is needed. 2is needed.
[0022] Preferred embodiments of the present invention are set out in the dependent claims.
[0023] According to a preferred embodiment, it is provided that a plurality of wooden boards of different widths are fed in successively, these plurality of wooden boards of different widths are clamped, glued and pressed together successively, so that a glued wooden panel is formed from this plurality of wooden boards of different widths, wherein a plurality of wooden boards of uniform width are cut from this glued wooden panel.
[0024] In other words, new wooden boards of varying widths are constantly fed in, joined together to form a wooden panel by clamping, gluing and pressing, and then boards of uniform width are constantly cut from this wooden panel.
[0025] It can, of course, happen that (several or many) wooden boards of the same width are fed in successively. Nevertheless, the method according to the invention can be applied, since the wooden boards cut off at the end have (or are intended to have) a different width than the boards fed in. However, the invention is particularly relevant when unsorted wooden boards are fed in and upgraded to boards of the same width.
[0026] Furthermore, it is preferably provided that the feeding device comprises a transport device, preferably a handling robot, and a conveying device. In principle, each wooden board can be fed individually. However, it is preferred that the transport device takes a layer of wooden boards of varying widths from a centimeter-sized bundle and places them onto the conveying device. The conveying device then transports the wooden boards individually.
[0027] A layer consists of approximately 4 to 12 individual wooden boards, arranged side by side in a horizontal plane to form one layer of a whole package. Spacers are placed between the individual layers.
[0028] To optimize the joining of the wooden boards, it is preferably provided that the side surfaces of the wooden boards are planed by a milling device that can be moved in the longitudinal direction of the wooden board.
[0029] Furthermore, it is preferably provided that the longitudinal curvature of the side surfaces of each wooden board is measured in a measuring device. This allows both side surfaces to be analyzed.
[0030] Preferably, the values of the longitudinal curvature of the measured wooden board are stored.
[0031] According to a particularly preferred embodiment, it is provided that each wooden board (in the respective clamping devices) is positioned, depending on the longitudinal curvature of the side surfaces measured via the measuring device, preferably via movable stops, such that the side surface is milled off by the milling device by a fixed width.
[0032] The curvature can be a few millimeters in the longitudinal direction. A range between approximately 2 mm and 20 mm can be compensated for by the milling device. The stops can be set to several positions, for example, for milling depths of 4 mm, 8 mm, 12 mm, and 16 mm. Continuous adjustment of the stop position based on the measured longitudinal curvature is also possible to minimize milling loss. For a particularly efficient and fast process, the milling device is designed to simultaneously plane the side surfaces of the first and second wooden boards. Thus, a single milling cutter mills the facing side surfaces of both boards in one operation.
[0033] It can happen that a supplied wooden board is too crooked or bent. Therefore, it is preferably provided that the wooden board is rejected if its longitudinal curvature is too great, preferably more than 20 mm.
[0034] After gluing and pressing, the glued wooden panel is preferably moved via a panel conveyor to a stop. This stop can be fixed or immovable. However, it is preferred that the distance between this stop and the cutting device is adjustable and corresponds to the uniform board width. Particularly preferably, the distance between the stop and the cutting device—and thus the uniform board widths—can be variably adjusted between 20 cm and 50 cm. This allows a package of wooden boards with, for example, a board width of 25 cm to be produced. Then, depending on requirements, the board width can be changed to, for example, 40 cm, and an entire package of 40 cm wide wooden boards can be produced from the same unsorted, centimeter-wide material.
[0035] Furthermore, it is preferably provided that the wooden boards of uniform width, preferably a layer of such wooden boards of uniform width, are transported onto a wooden board package via a transport device.
[0036] The entire wooden board manufacturing system is particularly efficient when the handling robot, which also forms the feeding device, is used as the transport device. This handling robot can be mounted on a rail for this purpose.
[0037] Protection is also sought for a wooden board manufacturing device according to claim 11.
[0038] This wooden board manufacturing device comprises a machine frame. This machine frame has a wooden board conveying direction, the wooden boards passing through the individual stations in this conveying direction. Perpendicular to the wooden board conveying direction, the machine frame has a width of up to 5 m, so that wooden boards with the usual lengths of 3.50 m to 4.30 m can be processed. The wooden board manufacturing device according to the invention further comprises
[0039] - a feeding device for feeding wooden boards of different widths, especially those made from centimeter-sized boards,
[0040] - a first clamping device movably attached to the machine frame for clamping a first wooden board over its top and bottom surfaces,
[0041] - a second clamping device movably attached to the machine frame for clamping a second wooden board over its top and bottom surfaces,
[0042] - a glue application device movably attached to the machine frame for applying glue to one of the facing side surfaces of the first or second wooden board,
[0043] - a press device movably mounted on the machine frame for pressing the first and second wooden boards together over their facing side surfaces and
[0044] - a cutting device movable on the machine frame for cutting wooden boards of uniform width from a glued wooden panel created by pressing the first and second wooden boards together.
[0045] This means that all process steps can be carried out via a single, compact, small system, whereas otherwise many different stations distributed throughout an entire sawmill or wood production area with many intermediate storage and sorting steps would be necessary.
[0046] It is also preferred that a measuring device for measuring the longitudinal curvature of the side surfaces of each wooden board is attached to the machine frame.
[0047] Furthermore, it is preferably provided that a milling device for milling the side surfaces of the wooden boards is attached to the machine frame, which can be moved in the longitudinal direction of the wooden boards - i.e. perpendicular to the direction of conveying the wooden boards.
[0048] Particularly preferred is the provision of movable stops on the machine frame, whereby each wooden board can be positioned via these movable stops, depending on the longitudinal curvature of the side surfaces measured by the measuring device, such that the side surface can be milled by the milling device by a defined width. In other words, the stops are adjustable so that each adjacent wooden board projects at least far enough into the milling area of the milling device to ensure that each wooden board is milled along its entire side surface. Where there is a greater curvature, more material is milled away. Where there is less curvature, less material needs to be milled away.
[0049] In short: After the milling process, the facing surfaces of the first and second wooden boards are flat and parallel to each other along the entire length of the board (up to over 4 meters). This enables a very stable glue joint.
[0050] For automation, it is preferably provided that a control or regulating unit is provided for controlling or regulating the wooden board manufacturing device.
[0051] This control unit can be connected to or be an integral part of an operating device, enabling an operator to operate and control the wooden board manufacturing device via a corresponding control program and menu. Such an operating device can include a screen and a keyboard, preferably a touchscreen.
[0052] In principle, the wooden board manufacturing device is designed so that no operator is required during normal operation. The machine can therefore operate autonomously, which is naturally less labor-intensive and thus cost-effective. Nevertheless, an operator control can be useful, especially for changing settings. For example, the stops for ensuring a uniform board width can be adjusted via the operator control. It is also possible to adjust or change the milling depth.
[0053] The terms "horizontal," "vertical," "front," and "back" used herein refer to the installed state of the wood board manufacturing device when the wood boards are horizontally oriented during processing. If the wood board manufacturing device is tilted or even vertically oriented during processing, the meaning of these terms changes accordingly.
[0054] Further details and advantages of the present invention are explained in more detail below with reference to the description of the figures and the exemplary embodiments shown in the drawings. Figure 1 shows a perspective view of a wooden board manufacturing device.
[0055] Figs. 2-18 each show in a front view (and in detail) the individual steps of the process,
[0056] Fig. 19 schematically shows a second embodiment and
[0057] Fig. 20 schematically shows a third embodiment.
[0058] Figure 1 shows a perspective view of a wooden board manufacturing device 1. A bundle of square-cut timber Z is schematically depicted in the lower left area. The individual wooden boards H of this bundle Z are aligned lengthwise LR. Typical lengths of such wooden boards H are between 3.40 m and 4.50 m. Accordingly, the width of the entire wooden board manufacturing device 1 is approximately 5 meters. This is certainly wide enough to accommodate even the longest wooden boards H.
[0059] The wooden board manufacturing device 1 comprises a feeding device 2 for feeding wooden boards Hw-dif of different board widths W (especially of centimeter-sized boards). This feeding device 2 in turn has a transport device 2.1 and a conveying device 2.2.
[0060] From the transport device 2.1 - specifically designed as a handling robot - a layer L of wooden boards Hw-dif of different board widths W can be removed from the centimeter goods package Z and placed on the conveyor device 2.2.
[0061] The conveyor device 2.2, in turn, can have a plurality of conveyor belts. These conveyor belts move along the conveying direction F. This conveying direction F is oriented perpendicular to the longitudinal direction LR.
[0062] Preferably, the conveying device 2.2 has several conveyor belts arranged parallel to each other (preferably spaced evenly apart from each other).
[0063] The conveying device 2.2 moves the individual wooden boards Hw-dif of different board widths W essentially in a horizontal plane.
[0064] In general, the wooden board manufacturing device 1 has a machine frame 9. The essential components of the machine are movably mounted on this machine frame 9. In the conveying direction F after the conveying device 2.2, the first clamping device 3.1 for clamping a first wooden board H1 is located. This first clamping device 3.1 can be pneumatically, hydraulically, or electrically driven. In the illustrated embodiment, this first clamping device 3.1 performs a clamping movement in the vertical direction V.
[0065] The glue application device 10, which is movably mounted on the machine frame 9, is barely visible in Fig. 1. However, it is located in the conveying direction F after the first clamping device 3.1.
[0066] In the conveying direction F, the second clamping device 3.2 follows for clamping a second wooden board H2. This second clamping device 3.1 can be pneumatically, hydraulically, or electrically driven. In the illustrated embodiment, this second clamping device 3.2 performs a clamping movement in the vertical direction V.
[0067] Both clamping devices 3.1 and 3.2 can be designed in the form of clamping beams aligned longitudinally.
[0068] The milling device 7 for milling the side surfaces S1 and S2 of the wooden boards H can be seen in its basic form in Fig. 1. This milling device 7 has a milling head 7.1, a (preferably electric motor) milling drive 7.2 and longitudinally oriented guide rails 7.3 for the milling device 7.
[0069] Barely visible in Fig. 1 is the pressing device 4 attached to the machine frame 9 for pressing the wooden boards H1 and H2 together. It is essential that the pressing together takes place at right angles to the opposing side surfaces S1 and S2 of the wooden boards H1 and H2. In the embodiment shown in Fig. 1, the pressing direction corresponds to the conveying direction R and lies in a horizontal plane.
[0070] The cutting device 5 for cutting wooden boards Hw-uni of the same width W from a glued wooden panel P formed by pressing the first H1 and second H2 together is barely visible in Fig. 1. In any case, it is located downstream of the pressing device 4 in the conveying direction R. In the illustrated embodiment, the cutting device 5 is mounted to be movable along the machine frame 9 in the longitudinal direction LR. Specifically, the cutting surface is aligned vertically and longitudinally in LR. Downstream of the cutting device 5 in the conveying direction F is the transport device 2.3. This transport device 2.3 for wooden boards Hw-uni of the same width W, in the embodiment shown in Fig. 1, comprises several conveyor belts 2.4 and the handling robot 2.5.
[0071] In a preferred embodiment, the transport device 2.1 and the handling robot 2.5 are identical. That is, this handling robot (2.1 and 2.5) can be moved back and forth along a rail (not shown) in the conveying direction F and can be used as needed wherever it is required (i.e., when feeding or transporting the wooden boards of the same width onto the wooden board bundle Y).
[0072] Figures 2 to 19 show the exemplary embodiment of a wooden board manufacturing device 1, depicted in perspective in Figure 1, in a front view. Figures 2 to 19 show various positions and sequences of movements in succession.
[0073] Figure 2 describes the essential components of the wooden board manufacturing device 1 in succession. The description proceeds in the conveying direction F.
[0074] On the far left of Fig. 2 is a typical package of centimeter-sized goods (Z). A related detail is shown in Fig. 2A.
[0075] Each wooden board H has a top surface D, a bottom surface B, two elongated side surfaces S1 and S2, and two end faces. The distance between the top surface D and the bottom surface B corresponds to the board thickness T, and the distance between the two elongated side surfaces S1 and S2 corresponds to the board width W.
[0076] A typical board thickness T is between 8 mm and 40 mm. A typical board width W is between 16 mm and 200 mm.
[0077] In a package of centimeter-sized timber (Z), the board thicknesses T within a package are typically the same, while the board widths W vary considerably. Specifically, a package of centimeter-sized timber (Z) consists of a large number of wooden boards (Hw-dif) of varying widths W.
[0078] Furthermore, each centimeter-sized package Z consists of a multitude of stacked layers L of wooden boards Hw-dif of varying board widths W. The advantage of such layers L is that each layer L can be transported as a whole by a handling robot (using a vacuum). As already shown in Fig. 2, such a layer L of wooden boards Hw-dif of varying board widths W has been placed on the conveying device 2.2 of the feeding device 2.
[0079] The singulation device 2.6 allows the individual wooden boards H of a layer L to be singulated, as shown in Fig. 3. Thus, only a single wooden board H is moved by the conveying device 2.2 in the conveying direction F.
[0080] In Fig. 4, the single wooden board H is located in the measuring device 6. This measuring device 6 has an alignment mechanism 6.1 and a sensor 6.2 (in particular a camera).
[0081] The alignment mechanism 6.1 (for example, in the form of a roller conveyor) aligns the wooden board H as precisely as possible in the longitudinal direction LR. The sensor 6.2 is designed to measure the length and the longitudinal curvature K of the wooden board H.
[0082] Specifically, the measurement determines how much the side surfaces S1 and S2 of the wooden board H deviate from an ideal side surface (corresponding to a straight, vertical plane aligned in the longitudinal direction LR). Figure 4A schematically depicts a relatively strongly curved wooden board H. The side surface S1 is therefore significantly bent relative to the ideal plane along the longitudinal direction LR. In contrast, Figure 4B shows only a slight longitudinal curvature K of the side surface S1.
[0083] The value of this longitudinal curvature - and thus the area to be milled - can be stored in a memory of the measuring device for the wooden board that was just measured.
[0084] If this longitudinal curvature exceeds a certain value (for example, 20 mm), this excessively curved wooden board H can be sorted out via the rejection flap 11 (see Fig. 5).
[0085] As also shown in Fig. 5, these sorted wooden boards H can be transported out of the area below or inside the machine frame 9 via a return device 12.
[0086] In Fig. 6, the wooden board H was moved from the conveying device 2.2 to the movable stop A1 in the conveying direction F. As shown comparatively in Figs. 6A and 6B, this stop A1 can assume at least two different positions. For example, with a strong longitudinal curvature K, the position shown in Fig. 6B can be assumed, whereas with a smaller longitudinal curvature K, the stop A1 assumes the position shown in Fig. 6A.
[0087] To minimize waste, the stop A1 can also be adjusted continuously.
[0088] Generally, it is preferably provided that each wooden board H is positioned, depending on the longitudinal curvature K of the side surfaces S1, S2 measured by the measuring device 6, preferably via movable stops A1, A2, such that the side surfaces S1, S2 are milled by the milling device 7 by a fixed width Wmin. According to Fig. 6A, the fixed width Wmin is relatively small, whereas in Fig. 6B it is relatively large.
[0089] In Fig. 7, the stop A1 is no longer shown (or has moved away). The wooden board H is now clamped relative to the machine frame 9 by the first clamping device 3.1. Specifically, one clamping jaw of the clamping device 3.1 moves vertically, so that the wooden board H is held firmly between the clamping jaw and the conveyor device 2.2.
[0090] Next, milling takes place as shown in Fig. 8. For this purpose, the milling head 7.1 of the milling device 7 moves longitudinally LR along the guide rails 7.3 and mills off that area of the wooden board H which protrudes into the milling area. Thus, the first side surface S1 of the wooden board H is milled flat.
[0091] Fig. 9 shows how the wooden board H, which is milled flat on one side, is moved further in the conveying direction F to the stop A2 via a sliding device 8.
[0092] In Fig. 10, the sliding device 8 has retracted. The wooden board H2, which was previously pushed to the stop A2, is now fixed relative to the machine frame 9 by the second clamping device 3.2. Specifically, a clamping jaw of this second clamping device 3.2 has moved downwards in the vertical direction V and clamps the wooden board H2 between the clamping jaw and the support surface via its top surface D and bottom surface B. At the same time, it can be seen in Fig. 10 that, in addition to the second wooden board H2 held in the second clamping device 3.2, a first wooden board H1 is fixed in the first clamping device 3.1.
[0093] Figure 11 illustrates the next step, according to which the milling device 7 is activated. The milling head 7.1 of the milling device 7 moves precisely between the two wooden boards H1 and H2 and their facing side surfaces S1 and S2.
[0094] In detail, as shown in Fig. 11A, the milling head 7.1 is not yet in operation or has not yet completely traveled along the longitudinal direction LR. Therefore, a portion of the first side surface S1 of the first wooden board H1 still protrudes into the milling area, while a portion of the second side surface S2 of the second wooden board H2 protrudes into the milling area. The width of the protruding portion corresponds to the defined milling width Wmiii and can, of course, differ depending on the measured longitudinal curvature K of both wooden boards H1 and H2.
[0095] In detail, as shown in Fig. 11B, the milling device 7 has now simultaneously planed both wooden boards H1 and H2. Thus, the two side surfaces S1 and S2 of the second wooden board H2, as well as the first side surface S1 of the first wooden board H1, have been planed. The second side surface S2 of the first wooden board H1 will be planed only in the next milling operation, i.e., after the first wooden board H1 has been moved to the right and another, new wooden board has moved in from the left.
[0096] In Fig. 12, the first clamping device 3.1 has already released, and the sliding device 8 is already in contact with the first wooden board H1. In contrast, the second wooden board H2 is still fixed by the second clamping device 3.2, so that the glue application device 10 can apply glue to one of the facing side surfaces S1, S2 of the first H1 and / or second wooden board H2. Specifically, in the illustrated embodiment, the glue is applied to the second side surface S2 of the second wooden board H2. For this purpose, the glue application device 10 moves in the longitudinal direction LR relative to the machine frame 9.
[0097] As shown in Fig. 13, the sliding device 8 has pushed the first wooden board H1 towards the second wooden board H2 in the conveying direction F. This causes the facing side surfaces S1 and S2 of the wooden boards H1 and H2 – with the glue between them – to abut each other. A hold-down device 13 extends from the area of the second clamping device 3.2 (in this case in a horizontal direction). This hold-down device 13 prevents either of the two wooden boards H1 and H2 from jumping upwards when they are pressed together.
[0098] A pressing device 4 can apply a pressing pressure of up to 20 tons in the horizontal direction, ensuring fast, safe and durable gluing of the wooden boards H1 and H2.
[0099] Regarding the application of glue, it may be necessary to use a glue that hardens in approximately 3 to 5 minutes and bonds the wooden boards H to form the panel P. However, a glue that hardens in just a few seconds (e.g., 10-20 seconds) may also be used.
[0100] Specifically, the sliding device 8, the hold-down device 13 and the second clamping device 3.2 together form the pressing device 4.
[0101] Generally, it can be provided that the hold-down device 13 (and possibly the entire pressing device 4) applies pressure continuously. Only during pressing is the hold-down pressure even higher.
[0102] In Fig. 14, the press device 4 is again switched to depressurization (or reduced pressure). The two wooden boards H1 and H2 now form a glued wooden panel P. This glued wooden panel P has already been pushed by the sliding device 8 far enough that the second side surface S2 is correctly positioned against the stop A2.
[0103] In Fig. 15, the hold-down device 13 has retracted, as has the sliding device 8. The two clamping devices 3.1 and 3.2 are active again. Specifically, a new first wooden board H1 (depending on the stop A1) is already being fixed in the first clamping device 3.1. In addition, the milling device 7 is active again and is simultaneously milling the facing side surfaces S1 and S2 of the first wooden board H1 and the glued wooden panel P (corresponding to the second wooden board H2).
[0104] This process, described in Figures 2 to 15, is repeated or continued until a glued wooden panel P, as shown in Figure 16, is produced, which extends beyond the area of the cutting device 5 in the conveying direction F. This cutting device 5 comprises a circular saw 5.1, a milling drive 5.2, and a traverse rail 5.3, wherein the milling drive 5.2, together with the circular saw 5.1, can move along the traverse rail 5.3 in the longitudinal direction LR relative to the machine frame 9.
[0105] This sawing device 5 is used to cut wooden boards Hw-uni of the same board width W from the glued wooden panel P.
[0106] The exact board width W can be set using the adjustable width stop 14 (and can therefore be changed from one package of wooden boards Y to another). Moving this width stop 14 changes the distance to the circular saw 5.1. For example, a board width W between 200 mm (see example Fig.
[0107] The distances can be set between 16A) and 500 mm (see Fig. 16B for an example). The set distance corresponds to the width of the wooden boards Hw-uni of the same board width W.
[0108] The glued wooden panel P is advanced to the adjustable width stop 14 via the sliding device 8. In the position of the glued wooden panel P shown in Fig. 16, the wooden board H must therefore first be w-uniThe part must be sawn off; only then can the sliding device 8 move the glued wooden panel P further to the second stop A2, until the second side surface S2 can be milled flat again.
[0109] In Fig. 17, the wooden board H is shown. w-uni The cutting device 5 saws off the glued wooden board P. After the sawing is complete, the adjustable width stop 14 pivots away or downwards, so that the sawn wooden board H w-uni The material is transported by conveyor belts 2.4 in conveying direction F to the end flap 15.
[0110] This process is then repeated until that number of wooden boards H has been reached. w-union conveyor belts 2.4, which are required for a layer L (see Fig. 18). This layer L of wooden boards Hw-uni of the same board width W is then stacked by the handling robot 2.5 (not shown here) onto the wooden board package Y containing wooden boards Hw-uni of the same board width W.
[0111] In line with this, returning to Fig. 2B, a relatively worthless package of centimeter-sized goods Z has been transformed by the inventive wooden board manufacturing device 1 into a valuable package of wooden boards Y with wooden boards Hw-uni of the same board width W.
[0112] Figure 19 schematically illustrates a second embodiment of the present invention in a front view. A detailed description of the process is omitted here. However, the components, identified by the same reference numerals, have the same function as in the first embodiment.
[0113] From the left, wooden boards Hw-dif of varying widths W are fed in via the feeder 2. The first wooden board H1 is clamped in the first clamping device 3.1, and its side surface S1 is milled by the milling device 7. This wooden board H1 is then advanced and milled in the second clamping device 3.2, where the second side surface S2 is milled. Glue is applied to the side surfaces S1 and / or S2 via the glue application device 10. A pressing device 4, indicated by the arrows, glues the two wooden boards H1 and H2 together to form a wooden panel P. Using the cutting device 5 (in this case, an under-table saw) and the adjustable width stop 14, wooden boards Hw-uni of the same width W are then cut from the glued wooden panel P.
[0114] Figure 20 schematically illustrates a third embodiment of the present invention in a front view. A detailed description of the process is omitted here. However, the components, identified by the same reference numerals, have the same function as in the first embodiment. A significant difference from the first two embodiments lies in the space-saving vertical or inclined conveying of the wooden boards. Therefore, the terms "vertical," "horizontal," "conveying direction," "left," "right," etc., must be adjusted accordingly.
[0115] As shown in Fig. 20, the wooden boards Hw-dif of different widths W can slide downwards by gravity (feeding device 2). Again, there are the two clamping devices 3.1 and 3.2, a glue application device 10 (not shown), a pressing device 4, and a cutting device 5.
[0116] Reference symbol list:
[0117] 1 Wooden board making device
[0118] 2 Feeding device
[0119] 2.1 Transport device for wooden boards of different widths
[0120] 2.2 Conveyor device
[0121] 2.3 Transport device for wooden boards of the same width
[0122] 2.4 Conveyor belts
[0123] 2.5 Handling robots
[0124] 2.6 Singulation device
[0125] 3.1 First clamping device 3.2 Second clamping device
[0126] 4 Pressing device
[0127] 5 Cutting device
[0128] 5.1 Circular saw
[0129] 5.2 Saw drive
[0130] 5.3 Travel rail
[0131] 6 Measuring device
[0132] 6.1 Alignment mechanism
[0133] 6.2 Sensor
[0134] 7 Milling device
[0135] 7.1 Milling head
[0136] 7.2 Milling drive
[0137] 7.3 Travel rails
[0138] 8 Sliding device
[0139] 9 machine frames
[0140] 10 Glue application device
[0141] 11 Excretory valve
[0142] 12 Return conveying device
[0143] 13 hold-down devices
[0144] 14 adjustable width adjustment stops
[0145] 15 End flap
[0146] H wooden boards
[0147] Hw-dif wooden boards of varying widths
[0148] Hw-uni wooden boards of the same board width
[0149] H1 first wooden board
[0150] H2 second wooden board
[0151] The surface of the wooden board
[0152] B. Floor area of the wooden board
[0153] 51 Side surface of the wooden board
[0154] 52 Side surface of the wooden board
[0155] T board thickness
[0156] W board width
[0157] P glued wooden board
[0158] L layer of wooden boards
[0159] Z centimeter goods package
[0160] Y Wooden board package with wooden boards of the same board width K Longitudinal curvature LR Longitudinal direction
[0161] A1 stop
[0162] A2 stop
[0163] Wmiii fixed width for milling F conveying direction
[0164] V vertical direction
[0165] Ainet, January 21, 2026
Claims
Patent claims 1. A method for producing wooden boards (H) in a wooden board manufacturing device (1), wherein each wooden board (H) has a top surface (D), a bottom surface (B), two elongated side surfaces (S1, S2) and two end faces, wherein the distance between the top surface (D) and the bottom surface (B) corresponds to the board thickness (T) and the distance between the two elongated side surfaces (S1, S2) corresponds to the board width (W), characterized by the steps - Feeding wooden boards (Hw-dif) of different board widths (W), in particular of centimeter-sized boards, with a feeding device (2), wherein a first wooden board (H1) has a different board width (W) than a second wooden board (H2), - Clamping the first wooden board (H1) over its top (D) and bottom (B) surfaces in a first clamping device (3.1), - Clamping the second wooden board (H2) over its top (D) and bottom (B) surfaces in a second clamping device (3.2), - Applying glue to one of the facing side surfaces (S1, S2) of the first (H1) or second wooden board (H2), - Pressing the first (H1) and second wooden boards (H2) together over their facing side surfaces (S1, S2) using a pressing device (4), - Curing of the glue so that a glued wooden board (P) is formed, and - Cutting wooden boards (Hw-uni) of the same board width (W) from the glued wooden board (P) by a cutting device (5).
2. Method according to claim 1, characterized in that a plurality of wooden boards (Hw-dif) of different board widths (W) are fed in succession, this plurality of wooden boards (Hw-dif) of different board widths are clamped, glued and pressed together successively, so that the glued wooden panel (P) is formed from this plurality of wooden boards (Hw-dif) of different board widths (W), wherein a plurality of wooden boards (Hw-uni) of the same width (W) are cut from this glued wooden panel (P) successively.
3. A method according to claim 1 or 2, characterized in that the feeding device (2) comprises a transport device (2.1), preferably a handling robot, and a conveying device (2.2), wherein a layer (L) of wooden boards (Hw-dif) of different board widths (W) is taken from a centimeter-sized bundle (Z) by the transport device (2.1) and placed onto the conveying device (2.2).
4. A method according to any one of the preceding claims, characterized in that the longitudinal curvature (K) of the side surfaces (S1, S2) of each wooden board (H) is measured in a measuring device (6).
5. Method according to at least one of the preceding claims, characterized in that the side surfaces (S1 , S2) of the wooden boards (H) are planed by a milling device (7) which can be moved in the longitudinal direction (LR) of the wooden board (H).
6. Method according to claims 4 and 5, characterized in that each wooden board (H) is positioned depending on the longitudinal curvature (K) of the side surfaces (S1, S2) measured via the measuring device (6), preferably via movable stops (A1, A2), such that the side surfaces (S1, S2) are milled by the milling device (7) by a defined width (Wmin).
7. Method according to claim 6, characterized in that the milling device (7) simultaneously mills the mutually facing side surfaces (S1, S2) of the first wooden board (H1) and the second wooden board (H2) flat.
8. Method according to claim 4, characterized in that a wooden board (H) is rejected if its longitudinal curvature (K) is too large, preferably more than 20 mm.
9. Method according to at least one of the preceding claims, characterized in that the glued wooden board (P) is moved via a sliding device (8) up to an adjustable width adjustment stop (14), wherein the distance of this width adjustment stop (14) to the cutting device (5) is adjustable and corresponds to the width of the wooden boards (Hw-uni) of the same board width (W).
10. Method according to at least one of the preceding claims, wherein the wooden boards (Hw-uni) of the same board width (W), preferably a layer (L) of such wooden boards (Hw-uni) of the same board width (W), are transported via a transport device (2.3) - preferably via the handling robot which also forms the feeding device (2) - onto a wooden board package (Y).
11. Wooden board manufacturing device (1), in particular for carrying out a method according to at least one of the preceding claims, characterized by a machine frame (9), - a feeding device (2) for feeding wooden boards (Hw-dif) of different board widths (W), in particular of centimeter-sized boards, - a first clamping device (3.1) movably attached to the machine frame (9) for clamping a first wooden board (H1) over its top (D) and bottom surfaces (B), - a second clamping device (3.2) movably attached to the machine frame (9) for clamping a second wooden board (H2) over its top (D) and bottom (B) surfaces, - a glue application device (10) movably attached to the machine frame (9) for applying glue to one of the mutually facing side surfaces (S1, S2) of the first (H1) or second wooden board (H2), - a press device (4) movably attached to the machine frame (9) for pressing the first (H1) and second wooden board (H2) together over their facing side surfaces (S1, S2) and - a cutting device (5) movably attached to the machine frame (9) for cutting wooden boards (Hw-uni) of the same board width (W) from a glued wooden board (P) created by pressing the first (H1) and second wooden board (H2) together.
12. Wooden board manufacturing device (1) according to claim 11, characterized in that a measuring device (6) for measuring the longitudinal curvature (K) of the side surfaces (S1, S2) of each wooden board (H) is attached to the machine frame (9).
13. Wooden board manufacturing device (1) according to claim 11 or 12, characterized in that a milling device (7) movable in the longitudinal direction (LR) of the wooden boards (H) for milling the side surfaces (S1, S2) of the wooden boards (H) is attached to the machine frame (9).
14. Wooden board manufacturing device (1) according to claims 12 and 13, characterized in that movable stops (A1, A2) are attached to the machine frame (9), wherein each wooden board (H) can be positioned via the movable stops (A1, A2) depending on the longitudinal curvature (6) of the side surfaces (S1, S2) measured via the measuring device (6) such that the side surface (S1, S2) can be milled off by the milling device (7) by a defined width (Wmin). Ainet, January 21, 2026