TW201936284A - Stretch-bend-straightening unit and method of actuating it - Google Patents

Abstract

In a stretch-bend-straightening unit, strip-shaped material is fed to a high-tension region (50) and a low tension region (52), the low tension region (52) being arranged downstream of the high tension region (50). A bending-straightening device is arranged in the high tension region (50). A measuring system determines first measured values in the high tension region (50). A controller (C) is determined and suitable for determining a deviation of the first measured values from a desired value of the bending straightening result and for determining at least one control variable for the bending straightening unit as a function of the determined deviation within a first closed control loop. At least one measuring system is additionally provided for determining second measured values in the low tension region, wherein the controller (C) is determined and suitable for determining a deviation of the second measured values from a desired value of the bending-straightening result and for determining at least one control variable as a function of the determined deviation within a second closed control loop. Selection means are provided which are intended and suitable for selecting the first or the second closed control loop in order to reduce the deviation of at least one the first or the second measured values from the predetermined or predeterminable desired value. Thus, a stretch-bend-straightening unit and a method of actuating it are designed in such a way that the quality of the strips processed thereby is increased.

Description

   Tension straightening system and actuating method        Relationship of related applications in this case    

This case involves and claims the priority of German Patent Application No. 10 2018 101 501.1 filed on January 23, 2018 and German Patent Application No. 10 2018 111 627.6 filed on May 15, 2018. The disclosures here are also clear and complete. Land was the subject of this case.

The present invention relates to a pull-bending straightening system according to item 1 of the scope of the patent application and a method for actuation thereof according to one of the scope of patent application 10.

The stretch-bending straightening system, such as the device shown in FIG. 3, is a system for minimizing internal stresses in ferrous metal strips and non-ferrous metal strips, thereby achieving better uniformity. A metal strip is understood as any strip-like material. The term "metal" includes the metal itself as well as its alloy. Since the strip is non-uniform after the previous rolling process, a straightening process is performed. This non-uniformity is caused by fibers of different lengths in the material, and appears in a wave-like deformation in the band. This phenomenon will be shown and explained in Figs. 4a, 4b and 5a to 5d. If the strip-shaped material 10 according to Fig. 4a has a wave shape 12, then the different fiber lengths according to Fig. 4b are responsible for this situation. Regarding the reference fiber length L _ref , adjacent fibers have different length differences ΔL. This wave-like deformation can be formed in the strip-shaped material 10 by the central waveform 13 according to FIG. 5 a, the edge waveform 14 according to FIG. 5 b, the single-sided edge waveform according to FIG. 5 c, or a combination of the edge waveform 14 and the center waveform 13 Show.

The processing process is shown in the straightening and straightening system shown in FIG. 3, a coil-shaped material 10 is input to a running direction 24 from a coil arranged on a coil dismantling device, and an S-shaped brake block 16 and a The S-shaped traction block 18 creates a pull-up area, and the strip-shaped material 10 is stretched there. (The term name "S" is used to indicate that the strip is guided in an S-shape around the rollers in this area.) The traction tension that occurs is measured by a measuring device 22. In addition, the strip needs to be bent alternately in the bend straightening unit 26. Through the foregoing two measures, shorter fibers are adjusted to longer fibers and the residual stress is reduced. This straightened strip is then wound up again on a take-up device 28.

According to FIG. 6, FIG. 7 a and FIG. 7 b, the use of precise straightening rollers 30 above and below the entire band width can produce alternating bending in the bending and straightening unit 26. This straightening roller 30 is supported by a shorter supporting roller 32 to prevent sagging. Since the unevenness of the strip-like material 10 partially occurs, for example, in the edge region, it can be adjusted by the support of the straightening roller 30 below. Therefore, the straightening roller 30 can be set to a curved profile to achieve the purpose of drawing shorter fibers. In the double-sided edge wave pattern 14, for example, the internal support member can be lifted to stretch shorter fibers located in the middle of the strip.

During the straightening process, an additional plate type measuring system (UMS) as shown in FIG. 8 can be used according to the existing technology, which is provided by Ungerer Technology GmbH. This profile measurement system is specifically designed to measure band non-uniformities with relatively low specific tensile tensions. This method can determine the non-uniformity of the entire bandwidth of the product after the S-shaped traction block 18 is processed, and can adjust the support members of the bending and straightening unit 26 to achieve the best straightening result. Among them, a sensitive force sensor is used in UMS, which is mounted on a fixed shaft for detecting unevenness. A measuring roller 36 is preferably used for this purpose. On the side-by-side section, there are different stresses from the strip or strip-shaped material 10, which are caused by the non-uniformity and are directly transmitted to the sensor. It is preferred to use a two-piece force sensor on each section. The measured value is processed by the evaluation unit 34 and transmitted to the controller C. The controller C calculates the optimal parameters of the straightening process, thereby controlling the SPS through programmable logic, and adjusting the support, that is, the setting of the support roller 32 by a position control device 38. After passing through the S-shaped traction block 18 in the pull-down area, the UMS is configured as close to the straightening process as possible to keep the uninductive distance as small as possible42. The non-inductive distance is the distance required for the material to be transferred from the bending and straightening unit 26 to the measuring roller 36, and then the non-uniformity can be detected on the measuring roller, and a control process is started in a closed control loop.

Known from patent publication DE 35 24 382 A1 is a draw-bending straightening system for strip material, which has a pull-down area and a pull-up area. The non-uniformity is measured in both regions, and the manipulated variable is used to calculate the set value of the roller rolling, thereby achieving a uniform tension as much as possible and thus obtaining a uniform strip quality. That is, the tension is measured uniformly on both sides, and the control value is determined from this value, and a selection device is used to select and operate between the pull-down area or the pull-up area.

A method and a device for controlling the uniformity of a metal strip are disclosed in patent publication number DE 22 03 911 A1. The non-uniformity is detected by the distance sensor, and then the immersion depth of the straightening roller is adjusted accordingly. This method is implemented through the intervention of a controlled system, rather than through the selection of a pull-up area or a pull-down area.

A measuring system as shown in FIG. 9 is known from patent publication number DE 10 2004 043 150 A1, which is used for the pull-up area. In this case, a roller of the S-shaped traction block 18 disposed behind the bending and straightening unit 26 is replaced by a measuring roller 40. This roller consists of a huge body. The sensor is arranged on the circumference of the solid roller body, and the entire wheel surface of the measuring roller 40 is coated with a PU coating. The sensor detects the smallest force difference in the strip. Subsequently, the detected force value is transmitted to the evaluation electronic device serving as the evaluation unit 34. This value is processed accordingly in the evaluation unit 34 and transmitted to the controller C, which can be calculated in the closed control loop for the straightening process. Best parameters. Compared with the above UMS system, it has the advantage of significantly shortening the non-inductive distance 42.

Based on the prior art, an object of the present invention is to provide a stretch-bend straightening system and an actuating method thereof, which can improve the quality of strip processing.

The present invention is realized by a draw-bending straightening system having the first feature of the patent application scope and an actuation method of the tenth feature by the patent application scope. The subject matter of the scope of patent application for this case is its favorable development. The features individually listed in the scope of the patent application can be combined together in a technically meaningful way, and can be supplemented by the matters described in the description and the details of the drawings, in addition to showing other implementations of the invention example.

The pull-bending straightening system has a feeding device for this purpose, which is used to input a strip-shaped material in a pull-up area and a pull-down area, wherein the pull-down area is arranged after the pull-up area, that is, the strip-shaped material Downstream side of the direction of travel. A bend straightening unit is arranged in the pull-up area. In addition, a measurement system for determining a first measurement value in a pull-up area and a measurement system for determining a second measurement value in a pull-down area are provided. A controller is configured to determine a deviation of the first measurement value from a predetermined or predeterminable set value of the bending straightening result, and a controller is used to determine a deviation of the second measurement value from the set value. The control variable is determined by the controller, which can minimize the deviation in the closed control loop. In other words, at least two pieces of measurement system are provided, one in the pull-up area and one in the pull-down area, so as to optimize the quality of the material to be processed as required. The selection device determines whether the first closed control loop or the second closed control loop is used for optimization. Such selections can be made based on specific criteria, which are based on empirical values or material parameters, but can also be re-established in the process because measurements are made simultaneously in corresponding closed control loops in the pull-up and pull-down areas, This allows specific values to be determined and optimized based on this approach. Thereby, a high-quality strip will be produced in a simple and advantageous manner.

It should be considered that, so far, a measuring device is usually used only in the pull-up area of the rolling mill, and the solution known in the prior art is to measure the measured value outside the rolling mill, especially the unevenness of the material plane in the pull-down area, It is straightened by a bending straightening unit directly derived from the coil, which is arranged in the pull-up area. However, having a combination of two measuring devices can achieve an optimal result, which depends on the condition of the strip, the requirements of the materials to be manufactured and / or the characteristics of the materials.

A preferred method is to provide a single controller for determining the deviation of the first measurement value and the second measurement value from the set value at the same time, so that the selection device can select the first control loop or the second control loop. Therefore, when other synchronization situations between different controllers no longer occur in the controller, and there are only small deviations, optimization can be performed, so that the effect of switching from one control loop to other control loops occurs.

It is advantageous to provide an evaluation unit for evaluating the first measurement value and / or the second measurement value, and more than one evaluation unit may be provided. Thus, the selection device can select the first closed control loop or the second closed control loop based on the evaluation. Both manual and semi-automatic or automatic selection can be considered as selection devices, depending on the instructions given to the controller and evaluation unit.

In addition, it is advantageous to provide a display device for displaying the first measurement value and the second measurement value and / or provide a selection device for manual selection by an operator. Therefore, an operator can clearly identify the current activity of the measured values of the two measuring devices by displaying, thereby determining the first control loop or the second control loop as the applicable control loop.

The measurement system in the pull-up area is preferably formed by a measurement roller disposed behind the bending and straightening unit. It is particularly advantageous that one of the rollers of the S-shaped traction block arranged behind the bending and straightening unit is usually replaced by a measuring roller around the sensor, and an elastic coating is applied on the wheel surface. Therefore, it can be determined immediately after the bending and straightening unit whether a good quality result is obtained in the pull-up area, thereby reducing the inductive distance between the bending and straightening unit and the measurement system. If the measuring roller is used as a part of the S-shaped traction block in a preferred embodiment, there is no need for a separate measurement system or separate placement of such rollers, and the measuring device can be used to replace the roller that already exists in the S-shaped traction block. Wheel, thereby reducing the cost of the entire system construction.

The measurement system for determining the second measurement value in the pull-down area is more advantageously arranged after the S-type traction block and as close to the block as possible. This type of configuration helps to reduce the non-sensing distance, thereby reducing abnormal data from the measurement system.

It is particularly advantageous that the measurement roller used for this purpose has a measurement section and at least one sensor arranged side by side, preferably two force sensors, so that the difference in bandwidth can be detected as accurately as possible in all areas, Especially in the drop-down area. Since the force generated in the pull-up area is not easy to detect some deformation, however, after the elastic recovery, it will occur again under the lower pull force in the pull-down area, so the deformation can be clearly identified in the pull-down area. For this reason, the advantage is that more precise resolution can be achieved through the configuration of the measurement section.

In addition, it is more advantageous to provide a storage device for storing operating parameters so that the established operating parameters can be used in future operations. The operating parameters are stored in a database, and the operating parameters are stored together with data about material processing. In this way, a database can also store records supplemented by professional knowledge, which records can include similar materials known in advance, so that the system can operate in the best possible manner from the beginning. As a result, results can be optimized faster and abnormal data can be reduced.

According to this method, a strip-shaped material is input to the pull-up area and the pull-down area. The first measurement value and the second measurement value are determined in the pull-up area and the pull-down area, and the deviation from the set value is determined. From this deviation, the control variable of the bending and straightening unit of the two measurement systems is calculated, which helps to optimize the results. Based on preset or presettable criteria, such as deviation from one of the set values and experience values or material parameters, the first closed control loop or the second closed control loop is selected to achieve the desired result. Therefore, the advantages of measurement in the pull-up area and the advantages of measurement in the pull-down area can be considered at the same time, so that a suitable control loop can be determined at any time to achieve better results. The system can then be operated manually, semi-automatically or automatically, depending on the available information of the device and the equipment switched to the corresponding control loop in order to obtain an optimal result.

Preferably, a single controller determines the deviation between the first measurement value and the second measurement value for two measurement systems at the same time, so that the first closed control loop or the second closed control loop can be selected. According to this method, all messages appear at the same time to make an informed decision.

According to a preset standard, the first measurement value and the second measurement value are advantageously evaluated to achieve a good result, wherein a corresponding control loop is selected according to the evaluation. Such standards may initially be set for the quality of the strip to be processed to meet specific requirements. It may also be determined by the operator in advance of material parameters or experience values, or it may be taken from a professional knowledge stored in a database.

For manual selection, the operator can advantageously observe the display of the first measurement value and the second measurement value simultaneously, so that it can select the best control loop through the selection device 48 and achieve results. Therefore, the operator can clearly determine the best solution at present. Because a coil can change over time during use, the process can also be automated and monitored to provide the operator with an indication of a suitable switching time when necessary.

Since the material to be processed initially passes through the pull-up area in the direction of travel and then passes through the pull-down area, it is particularly advantageous that the method first operates based on the first measurement value from the pull-up area in the first closed control loop. Until the straightened strip material reaches the measuring roller in the pull-down area, it can then switch to the second closed control loop of the pull-down area. At the same time, it can be determined from the obtained measurement value whether such switching is needed at this time. With this configuration, the non-sensing distance can be further reduced.

It is particularly advantageous that the operating parameters that have been determined on the bend and straightening system are stored in a database together with the data on the material to be processed, and can be reused later to process similar materials. As a result, set-up time is reduced and the process is optimized so that a good result can be achieved quickly. In addition, the expertise can be repeatedly superimposed on the knowledge available in the database, which includes specific material properties and related operating parameters for the draw-bend straightening system.

Both the straightening and straightening system and the method thereof can be programmed by code setting and / or programming, and when the code is executed on a computer, a processor, or a programmable hardware component, the desired result can be achieved. Results and advantages.

Other advantages will be apparent from the appended claims to the scope of the patent application and the description of the following preferred embodiments.

10‧‧‧ strip material

12‧‧‧ waveform

13‧‧‧center waveform

14‧‧‧Edge Waveform

16‧‧‧S type brake block

18‧‧‧S type traction block

20‧‧‧ Coil disassembly device

22‧‧‧ measuring device

24‧‧‧ Running direction

26‧‧‧Bending straightening unit

28‧‧‧ Take-up device

30‧‧‧Straightening roller

32‧‧‧ support roller

34‧‧‧ Evaluation Unit

36‧‧‧ measuring roller

36a‧‧‧Measurement section

38‧‧‧Position control device

40‧‧‧Measuring roller in pull-up area

42‧‧‧No-sense distance

44‧‧‧Database

46‧‧‧Display device

48‧‧‧Select Device

49‧‧‧ input device

50‧‧‧ Pull-up area

52‧‧‧ Drop-down area

L _ref ‧‧‧Reference length

△ L‧‧‧length difference

C‧‧‧controller

SPS‧‧‧Program logic control

100 bis 108‧‧‧Process steps

Hereinafter, the present invention will be explained in detail with reference to the embodiments in the accompanying drawings of the present invention. The following diagrams: Fig. 1 is a schematic diagram of the configuration of each component according to the present invention, Fig. 2 is a schematic diagram of the method flow according to the present invention, and Fig. 3 is a schematic diagram of the structure of the draw-bending straightening system according to the prior art. 4b A three-dimensional schematic diagram of the edge waveform and related fiber lengths on a material to be processed. Figures 5a to 5d are schematic diagrams of the center waveform, edge waveform, one-sided edge waveform, and a combination of edge waveform and center waveform on the material to be processed. Fig. 6 is a schematic view of a straightening process according to one of the prior art, Figs. 7a and 7b are end views and side views of a straightening roll and a support roll during the straightening process according to Fig. 6, and Fig. 8 is an example of a straightening process according to the prior art. A schematic diagram of a plate-type measurement system in the pull-down area. FIG. 9 is a schematic diagram of a uniformity measurement system according to the patent publication DE 10 2004 043 150 A1.

Detailed description of the preferred embodiment

The present invention will be described with reference to the accompanying drawings. However, the following embodiments are merely examples, and are not intended to limit the concept of the present invention to a specific configuration. Before describing the present invention in detail, it should be noted that the present invention is not limited to the components of the device and the corresponding method steps, because the components and methods may vary depending on the application. The terminology used herein is only intended to describe a particular embodiment, but is not limited thereto. In addition, if a singular or indefinite article is used in the specification or the scope of a patent application, the plural of the element also applies unless the entire context indicates otherwise.

According to the present invention, for the first time, two sets of measurement systems for a pull-up area and a pull-down area are combined. The preferred feature of this system is the use of a single controller C, but in principle multiple pieces of controller can also be used. This configuration is preferably such that a controller C can evaluate the uniformity measurement value of the measurement roller 40 in the pull-up area 50 and the measurement roller 36 in the pull-down area 52, and adjust the support of the straightening device according to the measurement value.

The evaluation unit 34 of the two measurement units is connected to the controller. Thus, the uniformity values of the two units are obtained, and the optimal parameters of the straightening process are calculated using the measured values of the effective measurement units. The operator of the device preferably adjusts the straightening process according to one of the two measuring units. Therefore, according to requirements and materials, the operator can use a more suitable measuring unit, and can also change it in the process. In order to compare the two units of each process, the uniformity measurement value can be displayed visually. In this case, the measurement values of the measurement roller 36 in the pull-down area 52 and the measurement roller 40 in the pull-up area 50 are displayed as graphics and / or numerical values, and are preferably displayed on a display device 46 at the same time.

Therefore, the system according to the present invention can realize more accurate adjustment of the support member when the strip is in a non-uniform state. In addition, according to the material requirements, the alloy of the material and / or the thickness of the material, a more suitable system can be used to achieve the best straightening effect.

For extremely thin and soft materials, such as aluminum, uneven surfaces may not be clearly detected due to the higher tension. This situation may be caused by the elastic properties of the strip. If the strip is stretched upward to make it flat, the unevenness cannot be measured at this time, and the unevenness appears again by the elastic recovery after the tension is reduced. In this case, the measurement system can be changed during the process to improve the process.

One other advantage is that a better straightening effect can be achieved by the measuring roller 36 in the pull-down area 52, so that abnormal data of the material can be reduced permanently. To this end, the measurement roller 40 is first activated in the pull-up area 50 and switched to the measurement roller 36 in the pull-down area 52 after passing through the non-inductive distance.

However, the measuring roller 40 in the pull-up area 50 is suitable for, for example, a high-strength material. Because the strip is stronger, its unevenness will not be twisted by the pulling force. Therefore, in this case, the measuring roller 40 can be used permanently in the pull-up area 50, so only a short non-inductive distance is required as its advantage.

After the strip material 10 is introduced into the system, the system can be started. First, the value of the measurement roller 40 of the controller C is processed simultaneously with the value of the measurement roller 40 in the pull-up area, because its non-sensing distance is significantly lower. The non-sensing distance can be understood as before the controller intervenes in the bending and straightening unit 26 to detect the influence of the non-uniformity, and the controlled system of an adjustment device, namely the bending and straightening unit 26, reaches The length of material required for the measurement point. The controller C sets the bending and straightening unit 26 according to the calculated parameters to obtain the best straightening result. After the strip reaches the measurement roller 36 in the pull-down area, the controller C can switch from the measurement roller 40 in the pull-up area to the measurement roller 36 in the pull-down area alone, and use the measurement value of the measurement roller 36 in the pull-down area to control the In other cases, the support roller 32 can be set by the operator through the input device 49 or a predetermined setting of the bending and straightening system, for example, the result can be set by a previously known result of the device.

The equipment operator can manually intervene through the input device 49 at any time and make changes to the controller C as needed. Alternatively, process data can also be input and set through the input device 49. In addition, the plant operator can create a database 44 in which, for example, process parameters of materials that have been scheduled or have been straightened by the device can be stored. Thereby, the controller C can individually select the optimum measuring roller 36 or the measuring roller 40 for repeated operations.

In addition to the process data that has been performed on the system, other data may be stored in the database 44 such as categorizing operating parameters or other expertise of a particular material. The professional knowledge can include information for experienced operators to operate this stretch straightening device, as well as setting suitable parameters to obtain good results. In addition, other physical properties can be included, such as operating speed or temperature dependence.

Since the measurement roller 40 in the pull-up area 50 and the measurement roller 36 in the pull-down area 52 both measure and display their measured values together, the measured values of the two measuring devices can be inserted and compared with each other by software. This method can be implemented by, for example, forming an average value of each measurement device and determining at a specific limit interval, for example, 50 control cycles. And based on the results and evaluation of the software, the controller C can decide the more suitable measurement system on its own. This conversion can be done automatically or as a recommendation to the operator.

Figure 2 shows a schematic diagram of a process. In step 100, the strip-shaped material 10 is input into a pull-up area 50 and a pull-down area 52. In step 101, the inputted material is measured by a measuring device in the pull-up area, and the deviation of uniformity is taken as the first measurement value. After the pull-up area, the strip-shaped material enters the pull-down area 52, and in step 102 at this position, the deviation of uniformity is also measured to become the second measurement value.

In step 103, the deviation of the uniformity is compared with a set value. When the deviation of uniformity is less than or equal to the set value, the bending and straightening system operates with this operating parameter. If the set value is not maintained, it is preferable to select the controlled system in the pull-up area or the pull-down area based on the predetermined criteria in step 104, and it will affect the result and therefore the deviation of uniformity. According to the selected path, the control variable of the pull-up area 50 or the pull-down area 52 is calculated in step 105 or step 106. In step 107, the manipulated variable is then applied to the bending and straightening unit 26, and the process returns to steps 101 and 102 to measure deviations in uniformity in the pull-up area 50 or the pull-down area 52, respectively. The process starts again.

The controlled system is selected in step 104 and the manipulated variables are determined in steps 105 and 106. Operating parameters derived from the database 44 may also be applied, which parameters are derived from previous processes, material properties or expertise.

The above description should be understood as various modifications, changes and adjustments can be made, ranging from equivalent objects to the scope of the attached patent application.

Claims (16)

    A bending and straightening system includes:-a feeding device for inputting a strip of material (10) along a running direction (24) in a pull-up area (50) and a pull-down area (52), wherein The area (52) is arranged downstream of the pull-up area (50) along the running direction (24),-a bend straightening unit (26) is arranged in the pull-up area (50),-at least one measuring system for Determining the first measurement value in the pull-up area (50), a controller (C) for determining the deviation of the first measurement value from a predetermined or predeterminable set value of the bending straightening result, and according to the A determined deviation in a closed control loop determines at least one manipulated variable suitable for the bend straightening unit (26),-a uniform motion device for influencing the manipulated variable,-wherein at least one measurement system is provided for determining The second measurement value in the pull-down area is characterized in that a controller (C) is used to determine the deviation of the second measurement value from a predetermined or predeterminable set value of the bending and straightening result, and according to the second closed control loop Determining deviations within at least one suitable manipulated variable and providing options Means (48) for selecting a first or a second closed control loop closed loop control, can be reduced deviation of the first measured value and / or value with a predetermined or predeterminable set value of the second measurement.         The bending and straightening system according to item 1 of the scope of patent application, characterized in that the controller is a single controller (C), which is used to determine the first measurement value and the second measurement value simultaneously with a predetermined or predeterminable The deviation of the set value, and the selection device (48) is suitable for this purpose, it can choose the first closed control loop or the second closed control loop.         The bending and straightening system according to item 1 or item 2 of the patent application scope, characterized in that at least one evaluation unit (34) is used to evaluate the first measurement value and the second measurement value, and the selection device (48) is used for The first closed control loop or the second closed control loop is selected according to the evaluation result.         The bending and straightening system according to any one of the above-mentioned patent applications, characterized in that the display device (46) is used to display the first measurement value and the second measurement value, and / or the selection device (48) can be operated by a Select manually.         The bending and straightening system according to any one of the above-mentioned patent applications, characterized in that at least one measurement system for determining a first measurement value in the pull-up area (50) is provided by a bending and straightening unit ( 26) The subsequent measuring roller (40) is formed.         The draw-bending straightening system according to item 5 of the scope of patent application, characterized in that an S-shaped traction block (18) is replaced by a measuring roller (40), and sensors are arranged on its periphery. Apply an elastic coating.         The bending and straightening system according to any one of the above-mentioned patent applications, characterized in that at least one measuring system for determining the second measurement value is arranged in the bending and straightening unit (26) and the pull-down area (52). A measuring roller (36) is formed behind the S-shaped traction block (18).         The bending and straightening system according to item 7 of the scope of patent application, characterized in that the measuring roller (36) has a measuring section (36a) arranged side by side with at least one sensor, which preferably has two force sensors .         The bending and straightening system according to any one of the above-mentioned patent applications, characterized in that the storage device is used for storing the operating parameters set by the first closed control loop or the second closed control loop, and a database (44) is provided, It is suitable for co-storing this operating parameter with the material data processed using the operating parameter.         A method for operating a draw-bend-straightening system according to any one of the above patent application scopes, comprising the following steps:-feeding the strip-shaped material (10) into the pull-up area (50) along the running direction (24) ) And the pull-down area (52), one of the bending and straightening units (26) is arranged in the pull-up area (50), and the pull-down area (52) is arranged downstream of the pull-up area (50) in the running direction (24), -Determine the first measurement value of the pull-up area (50),-determine the deviation of the first measurement value from the predetermined or predeterminable set value of the bending straightening result,-determine at least according to the determined deviation in a closed control loop A manipulated variable for the bend straightening unit (26),-determining the second measurement value (52) in the pull-down area, characterized by-determining a predetermined or predeterminable setting of the second measurement value and the bend straightening result Value deviation,-determining at least one manipulated variable based on the deviation determined in the second closed control loop,-selecting the first closed control loop or the second closed control loop to reduce the first measurement value and / or the second measurement value Deviation from a predetermined or predeterminable set value.         The method according to item 10 of the scope of patent application, characterized in that a single controller (C) simultaneously determines the deviation of the first measurement value and the second measurement value from a predetermined or predeterminable set value, and the first closing can be selected Control loop or second closed control loop.         The method according to item 10 or 11 of the scope of patent application, characterized in that the first measurement value and the second measurement value are evaluated according to a predetermined standard for achieving the bending straightening result, and the first closed control loop is selected according to the evaluation Or the second closed control loop.         The method according to any one of items 10 to 12 of the scope of patent application, characterized in that the first measurement value and the second measurement value can be displayed to the operator at the same time, and / or the first closing is manually selected by the operator Control loop or second closed control loop.         The method according to any one of the above patent applications, characterized in that the method first operates with the first measurement value from the pull-up area (50) in the first closed control loop until the strip-shaped material (10) reaches the pull-down The measurement roller (36) in the area (52) is then switched to the second closed control loop in the pull-down area (52).         The method according to any one of the above patent applications, characterized in that, during the operation of the draw-bending straightening system, the operating parameters previously used for the draw-bending straightening system are compared with a database (44) regarding the use of the The material data processed by the operating parameters are stored together, and similar materials can be processed with the stored data.         A program including code that is set and / or programmed to operate a draw-bent straightening system according to any one of claims 1 to 9 and / or to perform The method of any one of items 10 to 15, the code can be executed on a computer, a processor, or a programmable hardware component.