Method for producing sawn timber products, and sawn timber production installation

Abstract

The invention relates, inter alia, to a method for producing sawn timber products, wherein (A) logs are scanned by a feature scanner (4), the features thereof are detected and virtual images of the logs are created and stored in a database (3), (B) after which the scanned logs are combined into batches depending on their features, (C) wherein at least one batch is selected by means of a master computer (2) taking into account the detected features of the logs of the batch in order to fulfil, in an optimised manner, an order for producing sawn timber products and said batch is assigned to the order and (D) the at least one batch is fed to a sawing line (6), (E) wherein the logs of the batch are scanned by means of an identification scanner (5) before they are cut up and are identified by means of a comparison with the virtual images of the individual logs stored in the database (3). (F) Before the logs are cut up, the master computer (2) generates a log-specific cutting pattern for each log, said cutting pattern defining how the respective log from the selected batch is scored in the sawing line (6) for optimum fulfilment of the order and is cut up into the sawn timber products to be produced in accordance with the order. (G) On the sawing line (6), the logs are then cut up into the sawn timber products required for fulfilment of the order in accordance with the cutting patterns.

Description

[0001] Processes for the production of sawn timber products and sawn timber production plant

[0002] The invention relates to a method and a sawn timber production plant for the production of sawn timber products, such as side boards, main boards, boards and / or planks.

[0003] Sawn timber products are produced from logs, which, by their very nature, can contain very different wood qualities. The wood qualities contained in a log influence the production of sawn timber products insofar as not all parts of a log are suitable for the production of every sawn timber product. From both environmental and economic perspectives, there is an interest in utilizing the logs as comprehensively and efficiently as possible.

[0004] Therefore, one task in the production of sawn timber products is to identify the logs that are particularly suitable for the production of certain sawn timber products and then to process them in a particularly extensive and value-adding way.

[0005] The object of the invention is therefore to provide a method for the production of sawn timber products and a sawn timber production plant that enables a particularly efficient and resource-saving production of sawn timber products.

[0006] To solve the problem, a method for producing sawn timber products is first proposed, which includes the means and features of the independent claim directed to such a method. To solve the problem, a method for producing sawn timber products is thus proposed in particular, wherein logs, especially round log sections, are scanned with a feature scanner, for example an X-ray scanner or a computed tomography scanner, their features are recorded, virtual images of the logs are created, and stored in a database. Subsequently, the scanned logs are grouped into batches according to their features. The logs are preferably grouped into batches according to their external features, especially their length and / or diameter, particularly their top diameter.A batch can then comprise logs of comparable length and / or diameter, in particular top diameter.

[0007] A batch can, for example, comprise logs with similar or comparable characteristics, in particular with similar or comparable characteristics such as length and / or diameter, especially top diameter, and / or logs of identical or similar quality. At least one batch of logs is selected by a central computer, taking into account the recorded characteristics of its logs, for the optimized processing of at least one order for the production of sawn timber products, and assigned to that at least one order.

[0008] The batch selection can be made by the central computer, taking into account the requirements of at least one loaded order. The selected batch is then fed to a sawing line, for example, a profiling saw line. Before being divided on the sawing line for the production of sawn timber products, the logs in the batch are scanned using an identification scanner and identified by comparison with the virtual images of the individual logs stored in the database.

[0009] To identify the logs, the identification scanner can capture their external characteristics and, optionally to a lesser extent, also their internal characteristics. This allows the scanner to generate X-ray images of the logs in a cross-sectional plane. In this way, a unique fingerprint of the logs can be created, facilitating reliable identification.

[0010] Before the logs are cut into sawn timber products, the central computer generates a log-specific cutting pattern for each log. This pattern determines how the respective log of the selected batch is cut and separated into the sawn timber products required for the at least one order on the saw line, ensuring optimal processing. The logs are then cut on the saw line according to these cutting patterns, producing the sawn timber products necessary to fulfill the at least one order.

[0011] Knowing the characteristics of the logs in each batch allows for the selection of at least one batch best suited to fulfilling a specific order for the production of sawn timber products. This enables particularly efficient and resource-conserving production of sawn timber products, as selecting the most suitable batch ensures the most comprehensive utilization of that batch with minimal residual wood.

[0012] The batch selected to fulfill at least one order then comprises the logs that exhibit the characteristics and / or wood qualities required for the efficient fulfillment of that order. In this way, the individual logs of the selected batch can be processed in a particularly value-adding and comprehensive manner.

[0013] The selected batch of logs may contain logs of different wood species. It may also contain logs of varying wood qualities, as the generation of the cutting patterns can take into account areas within the logs that contain wood qualities unsuitable for fulfilling an order for the production of sawn timber products. This makes it possible to optimally utilize even a batch of logs with different wood qualities for the production of sawn timber products.

[0014] In one embodiment of the method, it is provided that the logs of a selected batch of logs are separated into, preferably different, sawn timber products to serve two or more orders, taking into account the wood qualities contained in the logs of the selected batch.

[0015] A selected batch of logs can thus be used to fulfill two or more orders, depending on the wood qualities they contain. For example, it is conceivable to fulfill at least part of an order for the production of higher-quality sawn timber products, such as construction timber elements, with a single batch of logs. The areas of the logs in the selected batch with higher-quality wood can be identified by recording the characteristics of the individual logs using a feature scanner and then utilized by placing corresponding cutting patterns into the logs to produce the higher-quality sawn timber products.The remaining, potentially lower-quality sections of the logs can also be identified and then used, for example, to fulfill an order for the production of lower-grade sawn timber products, such as pallet boards. The result of this approach is the best possible utilization of all wood qualities contained in the batch of logs.

[0016] The allocation of batches to logs and orders can be done by the central computer.

[0017] Knowing the batch of logs selected to fulfill a specific order for the production of sawn timber products allows a sawing line, on which the logs of the selected batch are cut, to be set up early and in a targeted manner for processing the logs. This, too, can promote particularly economical production of sawn timber products.

[0018] The entire production of sawn timber products can be controlled and monitored by the aforementioned central computer, which can also be referred to as the main computer. This central computer can be connected to the feature scanner and receives information and data from it about the individual scanned logs and, in particular, about the wood qualities contained in the logs.

[0019] The central computer can be connected to the previously mentioned identification scanner. The central computer can compare the identification characteristics of the logs, a so-called fingerprint, which were captured by the identification scanner, with a virtual image of the log, which was created using the aforementioned feature scanner and stored in the database, thus enabling the identification of individual logs.

[0020] In this way, the logs in a batch fed to the saw line can be identified before they are actually processed on the saw line. This can facilitate the efficient cutting of the individual logs on the saw line.

[0021] The control computer can generate a job-specific and log-specific cutting pattern for each log of a selected batch of wood, which ultimately determines how the individual log from the selected batch is cut into wood products using the saw line in order to fulfill the order as efficiently as possible.

[0022] Depending on the cutting pattern, the control computer can then control the saw line or initiate its control in order to separate the individual logs into sawn timber products to fulfill the order to be processed for the production of sawn timber products.

[0023] The aforementioned control computer can be connected to the feature scanner, the identification scanner, the database and / or the saw line via appropriate data and control connections.

[0024] The central control computer can thus manage and, if necessary, monitor the entire process for manufacturing sawn timber products from logs. The central control computer functions as the main computer for the fully automated control of production and capacity planning, as well as cutting optimization, particularly in the sawmill, and can also function as part of an ERP system with order management, capacity planning from drying onwards, and inventory management. In one implementation of the process, the logs are scanned with a feature scanner at a log yard. The log yard can be spatially separated from the saw line where the logs are cut into sawn timber products.

[0025] The distance between the log yard and the saw line of a sawmill can be bridged by means of transport that carry out the transfer of at least one selected batch of logs to the saw line. A truck, for example, can be used as a means of transport.

[0026] The route control of the means of transport, i.e., a truck that transports the batch of logs from the storage location of the batch, for example a log yard, to the saw line in a sawmill, can also be carried out by the central computer.

[0027] The batches can be assembled and / or stored at the roundwood yard.

[0028] The central control system can specify the batch composition and / or assign batches of logs to storage locations. The central control system can know the current location of each batch of logs at any given time. This enables targeted production control. For example, the central control system can also consider, as a possible additional criterion for selecting and assigning a batch to a specific order for the production of sawn timber products, the positions of the individual batches and the time required to bring each batch to a sawing line for processing the logs.The feature scanner is preferably designed to detect internal features, in particular wood qualities, density, rotten spots, inclusions and / or knots, and external features, in particular length and / or diameter, preferably top diameter, of logs.

[0029] A feature scanner can be an X-ray scanner, preferably a computed tomography scanner. A computed tomography scanner as a feature scanner enables three-dimensional acquisition of the features of logs and allows not only the acquisition of external features but also the acquisition of internal features of the logs with particularly high resolution and accuracy.

[0030] The aforementioned cutting patterns can be optimized quantitatively or qualitatively. Qualitatively optimized cutting patterns can aim to separate the logs into the largest possible number of sawn timber products. Qualitatively optimized cutting patterns can aim to separate the logs into sawn timber products of the best possible quality and / or the highest possible price achievable on the market for sawn timber products. In this way, even a batch of logs with mixed wood qualities can be utilized in a particularly economically valuable manner.

[0031] Depending on the wood qualities contained in the individual logs, it may be advantageous to separate the logs to maximize the quantity of sawn timber products, or to separate them to potentially obtain fewer, but higher-quality sawn timber products, each of which commands a higher market price. In this case, a slightly larger amount of residual wood during processing can be tolerated from an economic perspective, in favor of fewer, but higher-quality sawn timber products.

[0032] The quantitative optimization of the cutting patterns can result in a log being cut up in such a way as to produce sawn timber products of particularly high quality, based on the wood qualities it contains, regardless of the other possible optimization goal that is often pursued, namely to achieve a maximum yield of sawn timber products from a log.

[0033] The generation of the quantitatively optimized cross-sectional images of the logs can be carried out both from the inside out and completely arbitrarily and independently of a specific optimization direction, for example from the outside in.

[0034] In one implementation form of the procedure, the log-specific cross-sectional images can be created by the control computer based on the virtual images generated by the feature scanner and / or on the basis of the recorded internal features and / or on the basis of the recorded external features of the logs.

[0035] After the feature scanner generates the virtual images, for example, at the location where the logs are grouped into batches, particularly at the log yard, the control computer can generate log-specific cutting images for the logs based on these virtual images. The cutting images for the individual logs can be generated and made available even before the batched logs are transported to a sawing line, enabling rapid processing. This eliminates the need for a second scan of the logs to generate the cutting images immediately before sawing.

[0036] In one implementation of the method, a quality inspection of the produced sawn timber products is carried out, preferably at the aforementioned sawing line. This can be automated using a quality scanner, preferably camera-based. Subsequently, the degree to which at least one order has been fulfilled can be determined, preferably by the control computer, based on the inspection result.

[0037] Depending on the test result, the central computer can then trigger a supplementary order to produce missing sawn timber products, or at least one order to produce the sawn timber products missing for the complete fulfillment of the order.

[0038] The missing sawn timber products can then be manufactured to fulfill the supplementary order.

[0039] In one implementation of the process, the central computer can use empirical data regarding the timing of the inflow of logs with specific wood characteristics. The process can then be carried out particularly efficiently depending on the expected inflow of logs with specific wood characteristics.

[0040] Experience with the timing of log deliveries can help optimize various process steps, such as proactively planning order fulfillment. In one implementation of this method, the central computer can generate a forecast of when the required quantity of logs with specific wood characteristics will likely be available to fulfill an order.

[0041] Based on the forecast, processes on the saw line, particularly maintenance, repair, or servicing, can be controlled and / or orders can be prioritized. The control of these processes and the prioritization of orders can be handled by the central computer.

[0042] In a preferred implementation of the process, the central computer can output a forecast of when the quantity of logs with specific wood characteristics required to fulfill an order is expected to be available in a single batch.

[0043] This allows, for example, a logistics company to be informed in a timely and proactive manner about the planned transport of a batch to the sawing line, or to be commissioned with the transport.

[0044] In one implementation form of the process, the central computer can create the forecast based on empirical data regarding the timing of the delivery of logs with wood characteristics required to fulfill the order.

[0045] In a preferred implementation of the process, the central computer can generate the forecast based on historical experience regarding the timing of the influx of logs with wood characteristics required to fulfill the order.

[0046] The central computer can therefore schedule incoming orders in advance and enable continuous order processing, or at least an initial scheduling of the order, for both the customer and the producer.

[0047] The amount of empirical data can be increased with each completed order and / or through the inflow of logs, in order to create improved forecasts and thus greater planning reliability. For this purpose, data concerning the inflow of logs and the characteristics of the logs can be recorded as empirical data and stored in the database.

[0048] The forecast can be displayed, for example, as a message on a screen and / or as a message to a user.

[0049] Data relating to the inflow of logs can include, for example, information on the frequency, quantity and quantity of logs with specific wood characteristics.

[0050] In one implementation form of the procedure, stem-specific origin data of the logs can be stored in the database together with the virtual images of the logs scanned with the feature scanner.

[0051] In a preferred implementation of the method, log-specific data relating to the origin and / or the log supplier can be stored in the database along with the virtual images of the logs scanned with the feature scanner.

[0052] Log-specific data on the place of origin and / or data on the timber supplier can be important for the subsequent processing of the logs, for example in case of systematic problems occurring with the logs.

[0053] To find starting points for solving the problems or to identify the root cause of the issues. In one implementation of the procedure, wood characteristics of sawn timber products are recorded using a quality scanner, such as the one mentioned earlier, and stored in the database. In this context, it is advantageous if the quality scanner is configured to record wood characteristics of sawn timber products. The data recorded regarding the wood characteristics can be transferred to the database and stored there via a data connection between the quality scanner and the database.

[0054] In a preferred implementation of the method, the quality scanner captures wood characteristics in the form of the position and / or appearance of knot patterns of sawn timber products, after which the data relating to the captured wood characteristics are stored in the database.

[0055] The data collected on the sawn timber products can be used, for example, to ensure product quality and / or as proof for customers. The characteristics stored in the database can show whether the customer requirements for the respective order have been met.

[0056] In one implementation form of the procedure, the central computer can compare the features captured by the feature scanner and the quality scanner and / or assign the sawn timber products to the logs from which the sawn timber products were produced, based on the features captured by the feature scanner and the quality scanner, in order to determine the origin of the sawn timber products.

[0057] This allows the entire production process, from scanning the logs with the feature scanner to scanning the sawn timber products with the quality scanner, to be tracked and traced. Furthermore, the method offers the possibility of tracing a sawn timber product back to its origin or even to the timber supplier of the log from which the sawn timber product was produced.

[0058] Comprehensive product tracking can be used, for example, to analyze which process steps can be optimized.

[0059] As mentioned previously, the logs used in the process can be in the form of round log sections.

[0060] To solve the problem, a sawn timber production plant is also proposed, which is configured to carry out the method for manufacturing sawn timber products according to one of the claims directed to such a method. The sawn timber production plant can comprise a host computer, a database connected to the host computer at least temporarily, a feature scanner, an identification scanner, and a sawing line. The feature scanner, the identification scanner, and the sawing line can all be connected to the host computer at least temporarily, so that the host computer enables control of the feature scanner, the identification scanner, and the sawing line.

[0061] The sawn timber production plant can also include a quality scanner designed to assess the quality of the sawn timber products. Preferably, the quality scanner is camera-based, meaning it includes at least one camera. This allows, for example, the detection of knots in the sawn timber products as well as any defects and / or cracks. Preferably, the quality scanner is located at the sawing line. This allows the quality inspection of the sawn timber products to be carried out immediately after production, preferably while still on the sawing line. Defective sawn timber products can then be directly rejected and used for other purposes, such as the production of wood chips or other residual wood products.The central computer, the feature scanner, the identification scanner, the quality scanner, the sawing line, and the database can, if necessary, be operated at different locations. Networking the aforementioned units, for example via the internet, allows for their distributed arrangement and their integration into a production network.

[0062] An embodiment of the invention is described below with reference to the figures. They show:

[0063] Figure 1: a flowchart of the individual steps of the method according to the invention and

[0064] Figure 2: a block diagram illustrating the setup of a sawn timber production plant equipped to carry out the process.

[0065] According to step A, logs are scanned with a feature scanner 4, whereby their features are recorded and virtual images of the logs are created and stored in a database 3. The feature scanner 4 records both external and internal features of the logs. Additionally, origin data of the logs is stored in the database. This origin data includes the location and the log supplier.

[0066] In process step B, the scanned logs are grouped into batches based on their characteristics. The focus is primarily on the external characteristics of the logs, such as their length and / or top diameter, to assemble the batches. To optimize the processing of at least one order, process step C involves selecting at least one batch of logs using a central computer 2, taking into account the recorded characteristics of the logs, and assigning it to at least one order. The central computer 2 selects the batch based on the requirements of the specific order. It uses empirical data regarding the timeline for the arrival of logs with specific characteristics and generates forecasts of when a batch is expected to be ready for order fulfillment.The empirical data regarding the timing of the delivery of logs with specific wood characteristics has been gathered from previous orders for the fulfillment of this order. The batch of logs is then fed to a sawing line 6, for example a profiling sawing line, for processing – step D.

[0067] According to step E of the process, the logs of the batch are scanned by an identification scanner 5 before being cut on the saw line 6 for the production of sawn timber products. They are then identified by comparison with the virtual images of the individual logs stored in the database 3. The identification of the logs can be carried out with the aid of the control computer 2. The identification scanner 5 can be assigned to the saw line 6 and, in particular, can be located directly upstream of the saw line 6. This makes it possible to control the saw line 6 for cutting in an optimized manner, depending on the log identified by the identification scanner 5.

[0068] To identify the logs, the identification scanner 5 can capture their external characteristics and, optionally, to a preferably reduced extent, their internal characteristics. This makes it possible to generate X-ray images of logs in a cross-sectional plane using the identification scanner 5. In this way, a fingerprint of the logs can be created, facilitating reliable identification.

[0069] The host computer 2 can be used according to procedure step F before

[0070] To separate the logs into sawn timber products, a log-specific cutting pattern is created for each log, suitable for the respective order, which determines how the respective log of the selected batch is cut in saw line 6 and separated into the sawn timber products to be manufactured according to the order, in order to optimally serve the order.

[0071] The generation of log-specific cutting images can take place even before the individual logs have been identified using the identification scanner 5. For example, the generation of log-specific cutting images is possible as soon as details of the order for the production of sawn timber products are known and the batch of logs suitable for the best possible fulfillment of at least one order has been identified.

[0072] The log-specific cross-sectional images can be created based on the virtual images of the individual logs generated using the feature scanner 4 and taking into account the wood qualities contained in the logs.

[0073] Subsequently, in process step G, the logs can be cut into the sawn timber products required to fulfill at least one order on the saw line 6 according to the cutting patterns. As mentioned previously, the individual logs can be scanned at a log yard using the feature scanner 4. For example, an X-ray scanner, in particular a computed tomography scanner, can be used as the feature scanner 4, which is particularly suitable for resolving and identifying the wood qualities contained in the individual logs with exceptional precision. The feature scanner 4 is configured to detect internal features, in particular wood quality, density, rot, inclusions and / or knots, and external features, in particular length and / or diameter, preferably top diameter, of logs.

[0074] The batches of logs can be assembled at the aforementioned log yard and stored there until they are processed.

[0075] The central computer 2 can specify the composition of batches of logs and / or assign batches to storage locations. Central computer 2 is aware of the current location of each batch of logs at all times. The cross-sectional images of the individual logs can be created with quantitative or qualitative optimization. Quantitatively optimized cross-sectional images aim to separate the logs into the largest possible number of sawn timber products, while qualitatively optimized cross-sectional images aim to separate the logs into sawn timber products of the best possible quality and / or highest possible price achievable on the market for sawn timber products.

[0076] Preferably still in the sawing line 6, a quality inspection of the produced sawn timber products is carried out using a quality scanner 8, preferably camera-based. Subsequently, the control computer 2 determines, based on the inspection result, the degree to which the at least one order has been fulfilled.

[0077] The quality scanner 8 is additionally set up to record wood characteristics, such as the location and appearance of branch patterns, of the sawn timber products and to store them in the database 3.

[0078] Depending on the test result, the main computer 2 triggers a supplementary order to produce missing sawn timber products to at least one order, whereupon the missing sawn timber products are then produced to complete the order.

[0079] The logs of a selected batch of logs can also be separated into, preferably different, sawn timber products to serve two or more orders, taking into account the wood qualities contained in the logs of the selected batch.

[0080] The central computer 2 also compares the characteristics stored in database 3 by the feature scanner 4 and the quality scanner 8. This enables the central computer 2 to assign sawn timber products to their corresponding logs based on the characteristics recorded by the feature scanner 4 and quality scanner 8, and to display the complete production process, including determining the origin of the sawn timber products.

[0081] The process for manufacturing sawn timber products can be carried out on the sawn timber production plant designated as 1. The sawn timber production plant 1 comprises, for carrying out the process, a control computer 2, a database 3 connected to the control computer 2 at least temporarily, the previously mentioned feature scanner 4, the identification scanner 5, and also a sawing line 6 with a quality scanner 8.

[0082] The central computer 2 is connected via data and control connections 7 to the database 3, the feature scanner 4, the identification scanner 5 and the saw line 6 and its quality scanner 8.

[0083] In one variant of the process, the central computer 2 uses the features and virtual images of the logs, captured by the feature scanner 4 and stored in the database 3, to control the sawn timber production plant 1. Additionally, the central computer 2 also takes into account empirical data regarding the timing of log deliveries with specific wood characteristics.

[0084] Based on the order situation and the characteristics of the logs, the control computer 2 groups those logs into optimized batches and, based on the experience used, predicts when the quantities of logs required for an order are likely to be available in a batch.

[0085] After being fed to the saw line and before being cut on the saw line 6, the logs of the batch are scanned using the identification scanner 5 and identified by comparison with the virtual images of the individual logs stored in the database 3.

[0086] The cross-sectional images of the logs required for processing the orders to produce the sawn timber products are created by the host computer 2 on the basis of the virtual images generated by the feature scanner 4 and taking into account the internal features of the logs recorded by the feature scanner 4 and taking into account the external features of the logs recorded by the feature scanner 4.

[0087] The logs are cut according to the cutting patterns at saw line 6 to produce the required sawn timber products.

[0088] Subsequently, the sawn timber products are measured by the quality scanner 8 with regard to their wood characteristics, such as the position and / or appearance of knot patterns, and the data is stored in the database 3.

[0089] The central computer 2 compares the features recorded by the feature scanner 4 and the quality scanner 8 in the database 3 and assigns the sawn timber products to the logs from which the sawn timber products were produced. In this way, the entire manufacturing process is tracked.

[0090] Together with the virtual images of the logs scanned with the feature scanner 4, the central computer 2 stores origin data, in particular data on the place of origin and / or the wood supplier, of the logs in the database 3.

[0091] The quality scanner 8 is, as mentioned above, designed to record wood characteristics, in particular the position and / or appearance of knot patterns, of sawn timber products and to store them in the database 3.

[0092] The central computer 2 can compare the features recorded by the feature scanner 4 and the quality scanner 8 and, based on the features recorded by the feature scanner 4 and the quality scanner 8 respectively, assign the sawn timber products to the logs from which the sawn timber products were produced in order to determine their origin. Reference symbol list

[0093] 1 sawn timber production plant

[0094] 2 Main computers 3 Databases

[0095] 4 feature scanners

[0096] 5 identification scanners

[0097] 6 saw line

[0098] 7 Data / control connection 8 Quality scanner

Claims

Claims 1. Method for the production of sawn timber products, wherein (A) Logs, especially roundwood sections, are scanned with a feature scanner (4), thereby recording their features and creating virtual images of the logs and storing them in a database (3), (B) wherein the scanned logs are grouped into batches depending on their characteristics, preferably their external characteristics, in particular their length and / or diameter, in particular their top diameter, (C) wherein at least one batch is selected by means of a central computer (2) for the optimized handling of at least one order for the production of sawn timber products, taking into account the recorded characteristics of its logs, and is assigned to that at least one order (D) and which is fed at least one batch to a sawing line (6), in particular a profiling sawing line, (E) wherein the logs of the batch are scanned by means of an identification scanner (5) prior to their separation on the saw line (6) for the production of the sawn timber products and are identified by comparison with the virtual images of the individual logs stored in the database (3), (F) wherein the control computer (2) generates a log-specific cutting pattern for each log before the logs are cut into the sawn timber products, which determines how the respective log of the selected batch is cut in the saw line (6) and cut into the products to be manufactured according to the at least one order in order to optimally fulfill the at least one order sawn timber products are separated, (G) and wherein the logs are cut on the saw line (6) according to the cutting patterns into the sawn timber products required to serve at least one order .

2. Method according to claim 1, wherein the logs of a selected batch of logs are separated into, preferably different, sawn timber products to serve two or more orders, taking into account the wood qualities contained in the logs of the selected batch.

3. Method according to one of the preceding claims, wherein the logs are scanned with the feature scanner (4) at a log yard.

4. Method according to one of the preceding claims, wherein the batches are assembled and / or stored at a log yard.

5. Method according to one of the preceding claims, wherein the central computer (2) specifies the composition of batches of logs and / or assigns batches to storage locations, and / or wherein the central computer (2) preferably has knowledge at any given time of where each batch of logs is currently located.

6. Method according to one of the preceding claims, wherein the control computer (2) takes into account, as a further criterion for selecting and assigning a batch to the order for the production of sawn timber products, the positions of existing batches and / or the time required to provide the individual batches at the saw line (6) for cutting the logs.

7. Method according to one of the preceding claims, wherein the feature scanner (4) is configured to detect internal features, in particular wood quality, density, rot, inclusions and / or knots, and external features, in particular length and / or diameter, preferably top diameter, of logs, and / or wherein an X-ray scanner, in particular a computed tomography scanner, is used as the feature scanner (4).

8. Method according to one of the preceding claims, wherein the cutting patterns are created in a quantitatively or qualitatively optimized manner, wherein the quantitatively optimized cutting patterns aim at separating the logs into the largest possible number of sawn timber products and the qualitatively optimized cutting patterns aim at separating the logs into sawn timber products of the best possible quality and / or highest possible price.

9. Method according to one of the preceding claims, wherein the cross-sectional images are created by the host computer (2) on the basis of the virtual images generated by the feature scanner (4) and / or the recorded internal features and / or the recorded external features of the logs.

10. Method according to one of the preceding claims, wherein, preferably at the saw line (6), a quality inspection of the produced sawn timber products is carried out with a, preferably camera-supported, quality scanner (8), after which, preferably by the control computer (2), it is determined on the basis of the inspection result to what degree the at least one order has been fulfilled.

11. Method according to the previous claim, wherein the central computer (2) triggers a supplementary order for the production of missing sawn timber products depending on the test result to the at least one order and the missing sawn timber products are produced.

12. Method according to one of the preceding claims, wherein the central computer (2) uses empirical data regarding the time-dependent inflow of logs with certain wood characteristics.

13. Method according to the previous claim, wherein the control computer (2) outputs a forecast of when the quantity of logs with certain wood characteristics required to fulfill an order, in particular combined in a batch, is expected to be available.

14. Method according to the previous claim, wherein the central computer (2) creates the forecast based on, preferably historical, empirical values ​​regarding the timing of the inflow of logs with wood characteristics required for the execution of the order.

15. Method according to one of the preceding claims, wherein, together with the virtual images of the logs scanned with the feature scanner (4), origin data, in particular data on the place of origin and / or on the wood supplier, of the logs are stored in the database (3).

16. Method according to one of the preceding claims, wherein wood characteristics, in particular a position and / or form of knot patterns, of sawn timber products are recorded with a quality scanner (8) and stored in the database (3) be stored.

17. Method according to one of the preceding claims, wherein the host computer (2) compares the features captured by the feature scanner (4) and the quality scanner (8) and / or assigns the sawn timber products to the logs from which the sawn timber products were produced, based on the features captured by the feature scanner (4) and the quality scanner (8), in order to determine the origin of the sawn timber products.

18. Sawn timber production plant (1) set up to carry out the method according to one of the preceding claims .

19. Sawn timber production plant (1) according to the previous claim, wherein the sawn timber production plant (1) for carrying out the method comprises a host computer (2), a database (3) connected at least temporarily to the host computer (2), a feature scanner (4), in particular an X-ray scanner, preferably a computed tomography scanner, an identification scanner (5) and a saw line (6).

20. Sawn timber production plant (1) according to one of the two preceding claims, wherein the sawn timber production plant (1) has a quality scanner (8) which is set up to detect the quality of produced sawn timber products, preferably wherein the quality scanner (8) is a camera-based quality scanner and / or is assigned to the saw line (6).

Images