Method and device for controlling centering balance of strip steel

Abstract

The invention discloses a strip steel centering balance control method and device.The method comprises the steps that centering parameters of a steel strip are obtained, the centering parameters at least comprise the width of the steel strip and the centering distance, and the centering distance is the running distance of the steel strip between centering oil cylinders symmetrically arranged on the two sides of the steel strip; the telescopic stroke of centering oil cylinders on the two sides of the steel belt is adjusted according to the centering parameters and the preset position information of the center line, and the steel belt is pushed to the position of the center line for centering operation; the telescopic stroke comprises a first stroke of the left centering oil cylinder and a second stroke of the right centering oil cylinder; obtaining centering data during centering operation of the steel belt, and correcting the telescopic stroke in real time according to the centering data to enable the steel belt to operate on the position of the center line; the centering data at least comprise position information of the steel strip and surface feature data of the steel strip, and the surface feature data are image features when the steel strip is extruded; the real-time correction comprises stroke correction for a single-side centering oil cylinder and stroke correction for a double-side centering oil cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of strip steel production, and particularly to a control method and device for strip steel centering balance. Background Art

[0002] During the strip steel production process, the centering process of the strip steel ensures the final quality of the strip steel. Aligning the strip steel with the center line can ensure the stable operation of the strip steel rolling and the symmetry of the rolled strip shape, ensuring the smooth progress of the entire production process.

[0003] Currently, strip steel centering is achieved through multiple manual adjustments by operators in advance. This adjustment method has great limitations. It not only wastes a large amount of manpower and time, but also there are consistency deviations in manual operations, resulting in the strip steel not being centered. After long-term operation, the strip steel may deviate again. At this time, it is impossible to make timely adjustments, and the overall quality of the strip steel cannot be guaranteed. Summary of the Invention

[0004] The purpose of the present invention is to provide a control method and device for strip steel centering balance, automatically adjusting the centering position of the strip steel, effectively ensuring the centering operation of the strip steel, and ensuring the quality consistency of the strip steel.

[0005] According to the first aspect of the present invention, a control method for strip steel centering balance is proposed. The method includes: Obtain the centering parameters of the strip steel. The centering parameters at least include the width of the strip steel and the centering distance. The centering distance is the running distance of the strip steel between the centering cylinders symmetrically arranged on both sides of the strip steel; Adjust the telescopic strokes of the centering cylinders on both sides of the strip steel according to the centering parameters and the preset position information of the center line, and push the strip steel to the position of the center line for centering operation; the telescopic strokes include the first stroke of the left centering cylinder and the second stroke of the right centering cylinder; Obtain the centering data during the centering operation of the strip steel, and correct the telescopic strokes in real time according to the centering data, so that the strip steel runs at the position of the center line; the centering data at least includes the position information of the strip steel and the surface feature data of the strip steel. Among them, the surface feature data is the image feature when the strip steel is extruded; the real-time correction includes the stroke correction for a single-sided centering cylinder and the stroke correction for both-sided centering cylinders.

[0006] Further, presetting the center line specifically includes: Preset the central area of the center line based on the ratio of the width of the strip steel to the centering distance, and the width of the central area is less than the width of the strip steel, and the center line of the central area overlaps with the center line of the centering distance; The center line is located at any position within the central region, and the center line is a straight line.

[0007] Further, adjust the telescopic strokes of the centering cylinders on both sides of the steel strip according to the centering parameters and the preset position information of the center line, specifically including: Obtain the position information of the center line and the centering parameters; Calculate the stroke spacing between the two sides of the centering distance and the two ends of the steel strip when the center line of the steel strip overlaps with the center line. The stroke spacing includes a first spacing on the left side and a second spacing on the right side; Adjust the first stroke of the left centering cylinder according to the first spacing and adjust the second stroke of the right centering cylinder according to the second spacing.

[0008] Further, obtain the position information during the centering operation of the steel strip, specifically including: Obtain the first detection data of the left position sensor carried by the left centering cylinder and the second detection data of the right position sensor carried by the right centering cylinder; the first detection data is the real-time stroke data of the left centering cylinder, and the second detection data is the real-time stroke data of the right centering cylinder; Calculate the position information of the steel strip based on the first detection data and the second detection data.

[0009] Further, obtain the surface feature data during the centering operation of the steel strip, specifically including: Obtain the image data of the steel strip, and the image data is collected by an image detection unit located directly above the center line; Identify the surface feature data based on the image data. The surface feature data is the image feature when the steel strip is extruded, and the image feature at least includes the surface light and shadow and surface color when the steel strip is extruded.

[0010] Further, correct the telescopic stroke in real time according to the centering data, specifically including: Obtain the position information of the steel strip and determine whether the position of the steel strip is on the center line: If not, calculate the deviation value between the center line of the steel strip during operation and the center line based on the position information of the steel strip, and perform centering correction on the telescopic stroke based on the deviation value; the centering correction is the stroke correction for the bilateral centering cylinders; If so, maintain the current telescopic stroke.

[0011] Further, it also includes: Real-time detect whether the surface feature data exists on the steel strip: If not, maintain the current telescopic stroke. If so, obtain the image data of the steel strip, and calculate the offset value between the center line of the steel strip during operation and the center line according to the image data. Judge whether the offset value is zero: If so, shorten the telescopic stroke of the bilateral centering cylinders to make the surface feature data disappear. If not, shorten the telescopic stroke of the centering cylinder on the side with the longer telescopic stroke according to the offset value to make the surface feature data disappear. Correct the position information of the center line according to the offset value to generate the correction information of the center line.

[0012] According to the second aspect of the present invention, a control device for strip centering balance is provided, including: Parameter preset module: Obtain the centering parameters of the steel strip. The centering parameters at least include the width of the steel strip and the centering distance. The centering distance is the running distance of the steel strip between the centering cylinders symmetrically arranged on both sides of the steel strip. Centering operation module: Adjust the telescopic strokes of the centering cylinders on both sides of the steel strip according to the centering parameters and the preset position information of the center line, and push the steel strip to the position of the center line for centering operation; the telescopic stroke includes the first stroke of the left centering cylinder and the second stroke of the right centering cylinder. Centering correction module: Obtain the centering data during the centering operation of the steel strip, and correct the telescopic stroke in real time according to the centering data to make the steel strip run at the position of the center line; the centering data at least includes the position information of the steel strip and the surface feature data of the steel strip, where the surface feature data is the image feature when the steel strip is extruded; the real-time correction includes the stroke correction for the unilateral centering cylinder and the stroke correction for the bilateral centering cylinder.

[0013] According to the third aspect of the present invention, an electronic device is provided, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method steps in any one of the above first aspects are implemented.

[0014] According to the fourth aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method steps in any one of the above first aspects are implemented.

[0015] The beneficial effects of the present invention are: The present invention provides a control method and device for strip centering balance, which adjust the bilateral centering cylinders to make the steel strip run in a centered manner, and monitor and correct the position of the steel strip during the centering operation, so that the steel strip runs smoothly at the position of the center line.

[0016] Reflect the extrusion state of the steel strip from the surface characteristics of the steel strip, correct the center line of the steel strip, and ensure the normal operation of the current steel strip. Brief Description of the Drawings

[0017] The drawings incorporated into the specification and constituting a part of the specification illustrate embodiments of the present application and, together with the description, are used to explain the principles of the present invention. In these drawings, like reference numerals are used to denote like elements. The drawings in the following description are some embodiments of the present invention, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a flowchart of a control method for strip centering balance according to an embodiment of the present invention; Figure 2 It is a modular block diagram of a control device for strip centering balance according to an embodiment of the present invention; Figure 3 It is a schematic structural diagram of an electronic device provided by an embodiment of the present invention; Figure 4 It is a brief schematic diagram of centering balance control according to the present invention; Figure 5 It is a schematic diagram of the pipeline layout of the centering oil cylinder. Detailed Embodiments

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention and the prior art, the specific embodiments of the present invention will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts, and other embodiments can also be obtained. In addition, the terms related to directions only represent the relative positional relationship between components, not the absolute positional relationship.

[0020] Embodiment 1 According to the first aspect of the present invention, a control method for strip centering balance is provided, as Figure 1 shown, it is a flowchart of the control method for strip centering balance, including: Step S101: Obtain the centering parameters of the steel strip. The centering parameters at least include the width of the steel strip and the centering distance. The centering distance is the running distance of the steel strip between the centering oil cylinders symmetrically arranged on both sides of the steel strip.

[0021] In this application, after the centering cylinders on both sides are fixed, the running spacing of the steel belt is fixed. To ensure that the running range of the steel belt is large enough to adapt to products of different sizes, the running spacing can be adjusted based on the telescopic stroke of the cylinders, so that there is a larger adjustment space between the two ends of the steel belt and the cylinders on both sides. For example, the running spacing is the sum of the width of the steel belt and the telescopic stroke of a single-sided cylinder. In this way, the maximum adaptable size of the steel belt can be one telescopic stroke of the cylinder.

[0022] In an embodiment of this application, centering cylinders are symmetrically arranged on both sides of the steel belt. The telescopic ends of the centering cylinders on both sides are respectively abutted against the two ends of the steel belt, and the steel belt is jointly pushed by the cylinders on both sides to run at the position of the center line.

[0023] Ideally, the spacing between the two telescopic ends is the width of the steel belt. However, during long-term operation, there will be deviations in the control of the centering cylinders, resulting in the steel belt deviating, either to the left or to the right. At this time, it is necessary to adjust the telescopic strokes of the centering cylinders on both sides to push the steel belt back to the center line without squeezing the steel belt to make the steel belt run smoothly.

[0024] Before each operation, the width of the steel belt can be input in advance, and the centering spacing is a fixed value. If the centering spacing is adjusted, this fixed value should be adjusted.

[0025] Step S102: Adjust the telescopic strokes of the centering cylinders on both sides of the steel belt according to the centering parameters and the preset position information of the center line, and push the steel belt to the position of the center line for centering operation.

[0026] In an embodiment of this application, taking the example that there is one centering cylinder on each side, the telescopic stroke includes the first stroke of the left centering cylinder and the second stroke of the right centering cylinder. When adjusting the position of the steel belt, the first stroke and the second stroke can be adjusted simultaneously.

[0027] In this application, the center line is preset based on the centering spacing, generally at the center of the centering spacing. Of course, in specific implementation, it can also be set to other appropriate positions according to the actual situation. For example, if the telescopic strokes of the centering cylinders on both sides are different, the center line can be biased towards the centering cylinder with a shorter telescopic stroke.

[0028] In a specific embodiment, presetting the center line specifically includes: Presetting the central area of the center line based on the ratio of the width of the steel belt to the centering spacing, and the width of the central area is less than the width of the steel belt, and the center line of the central area overlaps with the center line of the centering spacing; The center line is located at any position within the central area, and the center line is a straight line.

[0029] In the embodiments of the present application, the division of the central region can be set based on the ratio between the width of the steel strip and the centering distance. When the steel strip runs at the center line, there is a certain distance between both ends of the steel strip and the telescopic ends on both sides, rather than placing the telescopic ends at the extreme positions, which is beneficial to the operation of the steel strip, and there is a large adjustable space for centering operation, which is more in line with the actual requirements.

[0030] In the embodiments of the present application, step S102 specifically includes: Obtain the position information of the center line and the centering parameters; Calculate the travel distances between the two side boundaries of the centering distance and both ends of the steel strip when the center line of the steel strip overlaps with the center line. The travel distances include the first distance on the left and the second distance on the right; Adjust the first stroke of the left centering cylinder according to the first distance and adjust the second stroke of the right centering cylinder according to the second distance.

[0031] In the present application, the desired running position of the steel strip is the center line. When calculating the telescopic strokes of the centering cylinders on both sides, it can be calculated based on the assumption that the running position of the steel strip is exactly on the center line, and the distances between both ends of the steel strip and the centering cylinders are obtained. The first distance on the left is the first stroke of the left centering cylinder, and the second distance on the right is the second stroke of the right centering cylinder. Just adjust the telescopic strokes of the centering cylinders on both sides according to the first distance and the second distance.

[0032] Specifically, if the control components of the left centering cylinder are the left proportional directional valve and the left proportional pressure valve, then these two valves can be adjusted to make the first stroke of the left centering cylinder reach the first distance; the same applies to the right centering cylinder.

[0033] Step S103: Obtain the centering data during the centering operation of the steel strip, and correct the telescopic stroke in real time according to the centering data so that the steel strip runs at the position of the center line; the centering data at least includes the position information of the steel strip and the surface feature data of the steel strip, where the surface feature data is the image feature when the steel strip is extruded.

[0034] In the embodiments of the present application, according to the differences in the centering data, the real-time correction strategies are also different. The real-time correction includes the stroke correction for the single-side centering cylinder and the stroke correction for the double-side centering cylinder. Among them, when there is no deformation of the steel strip, the real-time correction requires adjusting the telescopic strokes of both cylinders at the same time to make it centered while ensuring that the steel strip does not fall; when there is deformation of the steel strip, it is necessary to judge whether to perform single-side stroke correction or double-side stroke correction according to whether the steel strip deviates from the center line.

[0035] During the operation of the steel strip, in an ideal state, the distance between the telescopic ends of the left centering cylinder and the right centering cylinder is always the width of the steel strip. However, the possibility of adjustment deviation after long-term operation cannot be excluded. At this time, the steel strip will be squeezed, resulting in deformation of the steel strip.

[0036] Based on the actual situation, the surface of the steel strip is generally a smooth and flat structural surface, which can be equivalent to a mirror when laid flat. When the steel strip has slight deformation, halos, color changes, etc. will appear on the surface. The manifestations are: changes in light and shadow and color on the surface of the steel strip. These surface features can be directly observed to judge whether the steel strip is squeezed and deformed.

[0037] In the embodiments of the present application, real-time correction may include the following situations: When the steel strip is not centered, the telescopic stroke can be corrected in real time according to the position information of the steel strip. Among them, the position information of the steel strip can be detected by the position sensors carried by the centering cylinders to check the control effects of the control components (such as proportional reversing valves, proportional pressure valves, etc.) of the centering cylinders, and the first stroke and the second stroke are corrected in real time.

[0038] Specifically, obtaining the position information when the steel strip is centered in operation specifically includes: Obtaining the first detection data of the left position sensor carried by the left centering cylinder and the second detection data of the right position sensor carried by the right centering cylinder; the first detection data is the real-time stroke data of the left centering cylinder, and the second detection data is the real-time stroke data of the right centering cylinder; Calculate the position information of the steel strip according to the first detection data and the second detection data.

[0039] When the steel strip is squeezed, the telescopic stroke can be corrected in real time according to the surface feature data of the steel strip. Among them, the surface feature data of the steel strip can be collected by the image detection unit, and the surface feature data at least includes the surface light and shadow and surface color when the steel strip is squeezed.

[0040] Specifically, obtaining the surface feature data when the steel strip is centered in operation specifically includes: Obtaining the image data of the steel strip, and the image data is collected by the image detection unit located directly above the center line; Identify the surface feature data based on the image data, and the surface feature data is the image feature when the steel strip is squeezed, and the image feature at least includes the surface light and shadow and surface color when the steel strip is squeezed.

[0041] In a specific embodiment, correcting the telescopic stroke in real time according to the position information of the steel strip specifically includes: Obtain the position information of the steel strip, and determine whether the position of the steel strip is on the center line: If not, calculate the deviation value between the center line during the operation of the steel strip and the center line according to the position information of the steel strip, and perform centering correction on the telescopic stroke based on the deviation value; the centering correction is the stroke correction for the bilateral centering cylinders; If so, maintain the current telescopic stroke.

[0042] In this application, when performing centering correction, the strokes of the bilateral centering cylinders are corrected simultaneously, the state of the steel strip being clamped is maintained, and the steel strip is pushed to translate towards the position of the center line.

[0043] It should be noted that whether the steel strip is extruded has no relevance to whether the steel strip is centered. When the steel strip is extruded, it means that there is a deviation in the telescopic stroke of the centering cylinder. At this time, it has no substantial meaning to judge whether it is centered based on the telescopic stroke, and auxiliary judgment can be carried out based on image detection.

[0044] Exemplarily, compare the center line of the steel strip operation detected by image with the center line. If the steel strip is centered, it means that both the first stroke and the second stroke are too large and should be shortened synchronously; if the steel strip is not centered, it means that one of the strokes is too large and that stroke should be shortened. To judge which centering cylinder has an excessive telescopic stroke can be achieved based on image detection.

[0045] In a specific embodiment, for real-time correction, it further includes: Real-time detect whether the steel strip has the surface feature data: If not, maintain the current telescopic stroke; If so, obtain the image data of the steel strip, and calculate the offset value between the center line during the operation of the steel strip and the center line according to the image data; Judge whether the offset value is zero: If so, shorten the telescopic strokes of the bilateral centering cylinders to make the surface feature data disappear; If not, shorten the telescopic stroke of the centering cylinder on the side with the longer telescopic stroke according to the offset value to make the surface feature data disappear; Correct the position information of the center line according to the offset value to generate the correction information of the center line.

[0046] In this application, if the offset value is zero, it indicates that the steel strip is centered, and the telescopic strokes of the centering cylinders on both sides are too large. They should be shortened until the surface features disappear, that is, the state where the steel strip is not squeezed. Theoretically, it just makes the center line of the steel strip operation overlap with the center line. If the offset value is not zero, it indicates that the steel strip is not centered, and the telescopic stroke of the unilateral centering cylinder is too large. The telescopic stroke of the centering cylinder on this side should be shortened until the surface features disappear, that is, the state where the steel strip is not squeezed. Theoretically, it just makes the center line of the steel strip operation overlap with the center line.

[0047] In the embodiments of this application, when there is a deviation between the actual telescopic stroke and the theoretical telescopic stroke of a certain centering cylinder, the centering operation of the steel strip can be carried out based on the actual telescopic stroke, and the position of the center line can be corrected based on the offset value to eliminate the control error of this centering cylinder at the software level, so that the steel strip runs at the center line.

[0048] At the same time, the correction information of the center line should be generated, which can be stored in the form of a log, and the correction information can be sent to the monitoring platform, staff, etc., so as to facilitate the repair and maintenance of the centering cylinder and eliminate the control error at the physical level.

[0049] In the embodiments of this application, please refer to Figure 4 、 Figure 5 , the specific implementation of the centering balance device can refer to the following embodiments: The centering balance device includes a centering cylinder group symmetrically arranged on both sides of the preset center line of the steel strip operation and a detection module for detecting the position of the steel strip. The centering cylinder group includes a first cylinder group and a second cylinder group symmetrically arranged on both sides of the center line. The steel strip is located between the first cylinder group and the second cylinder group, and the telescopic ends of the first cylinder group and the second cylinder group respectively abut against both ends of the steel strip. The detection module is electrically connected to the control system of the centering cylinder group, and the control system simultaneously drives the first cylinder group and the second cylinder group according to the detection results of the detection module, so that the steel strip runs at the position of the center line.

[0050] In this embodiment, the running position of the steel strip should be located at the position of the center line, that is, the center line of the steel strip itself overlaps with the center line. The running position of the steel strip is adjusted by the centering cylinder group. Specifically, it is jointly determined by the first cylinder group and the second cylinder group respectively arranged on both sides of the steel strip. The first cylinder group and the second cylinder group jointly maintain the running position of the steel strip, so that the steel strip runs at the position of the center line.

[0051] Specifically, the first cylinder group includes at least one left centering cylinder, and the left centering cylinder is horizontally arranged on the left side of the center line; the second cylinder group includes at least one right centering cylinder, and the right centering cylinder is horizontally arranged on the right side of the center line, and the left centering cylinder and the right centering cylinder are arranged opposite to each other, and the steel strip is located between the left centering cylinder and the right centering cylinder.

[0052] A right centering cylinder is arranged opposite to each left centering cylinder on the opposite side of the steel belt. The centering cylinders are arranged in pairs, and the pushing effect of each pair of centering cylinders on the steel belt is symmetric, so as to avoid unnecessary damage to the steel belt when the centering cylinders push the steel belt.

[0053] Taking a left centering cylinder and a right centering cylinder as an example, the left centering cylinder and the right centering cylinder "clamp" the steel belt from left to right. The telescopic ends of the two cylinders respectively abut against the two side ends of the steel belt to jointly maintain the running position of the steel belt and make the steel belt run at the center line position.

[0054] Taking the left centering cylinder as an example, a pushing member for contacting the side end of the steel belt can be provided at its telescopic end. The pushing member can be located directly in front of the telescopic end. The thickness of the pushing member in the direction perpendicular to the surface of the steel belt (vertical direction) is much larger than the thickness of the steel belt, which can make the alignment between the steel belt and the telescopic end more convenient and reduce the requirement for alignment accuracy.

[0055] In this embodiment, the detection module includes a first position sensor group and a second position sensor group. The first position sensor group includes at least one left position sensor, and the left position sensor is used to detect the telescopic stroke of the left centering cylinder; the second position sensor group includes at least one right position sensor, and the right position sensor is used to detect the telescopic stroke of the right centering cylinder.

[0056] Exemplarily, one left centering cylinder is correspondingly provided with one left position sensor, and one right centering cylinder is correspondingly provided with one right position sensor to detect the telescopic strokes of the centering cylinders on both sides of the steel belt, so as to calculate the running position of the steel belt.

[0057] Specifically, the center line can be preset in the middle of two symmetrically arranged centering cylinders. According to the telescopic strokes of the centering cylinders and the width of the steel belt, it can be directly compared whether the running position of the steel belt is located on the center line. Of course, the center line can also deviate from the center position, and it can be compared according to the distance from the center position.

[0058] Multiple centering cylinders can be provided on both sides of the steel belt, that is, multiple left centering cylinders and multiple right centering cylinders. The number of cylinders on the left and right sides is the same, and the corresponding number of position sensors can be set synchronously.

[0059] Exemplarily, the first position sensor group includes multiple left position sensors, the first cylinder group includes multiple left centering cylinders, and each left position sensor corresponds to a left centering cylinder; the second position sensor group includes multiple right position sensors, the second cylinder group includes multiple right centering cylinders, and each right position sensor corresponds to a right centering cylinder.

[0060] The detection data of the position sensors on both sides can better reflect the running attitude of the steel strip. The running position of the steel strip can be calculated based on the position detection data at multiple points. The deviation angle between the center line of the steel strip and the center line is calculated based on the running position of the steel strip, and this is used as the adjustment basis.

[0061] Feasible. The control system may include a data processing module. The data processing module is used to calculate the width of the steel strip and the angle of the front axle center line according to the detection data of the detection module. The angle of the front axle center line is the angle between the center line of the steel strip during operation and the center line. The control system simultaneously drives the first oil cylinder group and the second oil cylinder group according to the angle of the front axle center line to make the angle of the front axle center line zero, that is, the center line of the steel strip itself overlaps with the center line, and the steel strip runs at the position of the center line.

[0062] Specifically, when the angle of the front axle center line has a left deviation, the first oil cylinder group / left centering oil cylinder is driven to increase the telescopic stroke, and the second oil cylinder group / right centering oil cylinder is driven to reduce the telescopic stroke. The increased stroke is the same as the reduced stroke, so that the steel strip is always under the influence of the centering oil cylinders on both sides.

[0063] During the operation of the steel strip, in an ideal state, the distance between the telescopic ends of the left centering oil cylinder and the right centering oil cylinder is always the width of the steel strip. However, the possibility of adjustment deviation after long-term operation cannot be excluded. At this time, the steel strip will be squeezed, resulting in deformation of the steel strip.

[0064] The surface of the steel strip is generally a smooth and flat structural surface. When laid flat, it is equivalent to a mirror. When the steel strip has slight deformation, halos, color changes and other phenomena will appear on the surface, and these surface features can be directly observed. For the running position of the steel strip, it can also be determined by image recognition.

[0065] When obtaining the running image of the steel strip, the surface features of the steel strip can be obtained synchronously. Based on these surface features, the change of the steel strip's own structure can be reflected, such as whether it is squeezed and deformed, and whether the telescopic ends of the centering oil cylinders are too long.

[0066] In this embodiment, the detection module includes an image detection unit. The image detection unit is suspended above or below the center line. The image detection unit is used to detect the position of the steel strip or the surface features of the steel strip. The surface features at least include the surface image of the steel strip. The control system simultaneously drives the first oil cylinder group and the second oil cylinder group according to the position of the steel strip to make the steel strip run at the position of the center line.

[0067] Specifically, the image detection unit acquires the running image of the steel strip, can identify and judge the running position of the steel strip by itself, and send the judgment result to the control system; based on the centering cylinders on both sides as the boundaries and the width of the steel strip as the inner limit, it can calculate the distances between the boundaries and the inner limit on both sides, and compare them with the distances between the center line and the boundaries on both sides, so as to judge whether the steel strip is running at the position of the center line. The judgment of surface features can be implemented by the control system.

[0068] Exemplarily, the control system includes an image processing module. The image processing module is used to judge the running state of the steel strip according to the surface features. The running state of the steel strip at least includes the extrusion state and the normal state when not extruded; the control system drives the first cylinder group and the second cylinder group simultaneously according to the running state of the steel strip, so that the running state of the steel strip is the normal state.

[0069] It can be understood that the steel strip should not be in the extrusion state, whether it is the extrusion caused by the centering cylinder on the steel strip or the extrusion caused by the change of the steel strip's own structure; when the steel strip has an over-specification extrusion area, it should be judged as the extrusion state. At this time, the extrusion risk caused by the centering cylinder should be excluded first. If the extrusion deformation is not caused by the centering cylinder, the machine should be stopped for self-inspection to make the steel strip's own structure meet the standards in the initial state.

[0070] It should be noted that it can be defaulted that the steel strip's own structure is stable and meets the standards, so the extrusion state is caused by the centering cylinder. Therefore, only by adjusting the telescopic stroke of the centering cylinder can this problem be solved, so that the steel strip can run normally under the push of the centering cylinder without being extruded and deformed.

[0071] Of course, the steel strip's own structure can be detected upstream of the centering balance device to ensure that the steel strip meets the production standards, which is also available in the production line. Therefore, it can be defaulted that the steel strips reaching the centering balance device all meet the production standards, that is, the steel strip's own structure is stable and meets the standards.

[0072] The cooperation between the image detection unit and the position sensor can also be implemented. The maximum value of the telescopic end distance is limited by the position sensor, and the minimum value of the telescopic end distance is limited by the surface features, and it is adjusted in real time during the running process of the steel strip, so that the steel strip runs smoothly at the position of the center line.

[0073] Proportional pressure valves and proportional directional valves are both set in the hydraulic drive systems of the left centering cylinder and the right centering cylinder. The control system drives the left centering cylinder and the right centering cylinder simultaneously through the proportional pressure valves and the proportional directional valves.

[0074] Please refer to Figure 5, the left and right centering cylinders can share a set of main working pipelines (T1, P1), and are split into various hydraulic circuits (A, B) through a proportional directional valve. A proportional pressure valve can be arranged on the P pipeline to control the centering pressure. A control pipeline and an oil drain pipeline can be additionally arranged at the proportional pressure valve, as shown in Figure 4 ; the proportional directional valve is used to control the speed and direction of the centering cylinder. Meanwhile, pressure sensors can be mounted on the respective hydraulic circuits B1, B2 to detect the pressure of the cylinder.

[0075] Please refer to Figure 4 , Figure 5 . The pressure sensor and the above detection module can form a detection system of the centering balance device, and the proportional pressure valve and the proportional directional valve can form an execution system of the centering balance device. The control system adjusts the parameters of the execution system according to the detection data of the detection system, so as to change the telescopic stroke of the centering cylinder and adjust the running position of the steel strip.

[0076] Embodiment 2 According to the second aspect of the present invention, a control device for strip centering balance is provided. As shown in Figure 2 , it is a modular block diagram of the control device for strip centering balance, including: Parameter preset module: Obtain the centering parameters of the steel strip. The centering parameters at least include the width of the steel strip and the centering distance. The centering distance is the running distance of the steel strip between the centering cylinders symmetrically arranged on both sides of the steel strip; Centering operation module: Adjust the telescopic stroke of the centering cylinders on both sides of the steel strip according to the centering parameters and the preset position information of the center line, and push the steel strip to the position of the center line for centering operation; the telescopic stroke includes the first stroke of the left centering cylinder and the second stroke of the right centering cylinder; Centering correction module: Obtain the centering data during the centering operation of the steel strip, and correct the telescopic stroke in real time according to the centering data, so that the steel strip runs at the position of the center line; the centering data at least includes the position information of the steel strip and the surface feature data of the steel strip, where the surface feature data is the image feature when the steel strip is extruded; real-time correction includes stroke correction for a single-sided centering cylinder and stroke correction for both-sided centering cylinders.

[0077] It can be understood that the devices provided in the embodiments of the present invention are all applicable to the method described in Embodiment 1. The specific functions of each module can refer to the above method process and will not be elaborated here.

[0078] Embodiment 3 An electronic device provided in an embodiment of the present invention is used to implement the method described in Embodiment 1. Figure 3 is a schematic physical structure diagram of an electronic device provided in an embodiment of the present invention. The electronic device may include: at least one central processing unit, at least one network interface, a control interface, a memory, and at least one communication bus.

[0079] Among them, the communication bus is used to realize the connection communication and information interaction among components.

[0080] Among them, the network interface may optionally include a standard wired interface, a wireless interface (such as a Wi-Fi interface).

[0081] Among them, the control interface is used to output control operations according to instructions.

[0082] Among them, the central processing unit may include one or more processing cores. The central processing unit uses various interfaces and lines to connect various parts within the entire terminal, and by running or executing instructions, programs, code sets or instruction sets stored in the memory, and by calling data stored in the memory, it executes various functions of the terminal and processes data according to the method described in Embodiment 1.

[0083] Among them, the memory may include a random access memory (RAM), and may also include a read-only memory (ROM). Optionally, the memory includes a non-transitory computer-readable storage medium. The memory can be used to store instructions, programs, code, code sets or instruction sets. The memory may include a program storage area and a data storage area. Among them, the program storage area can store instructions for implementing the operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the method of the above Embodiment 1, etc.; the data storage area can store data involved in the above various method embodiments.

[0084] The present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, it implements the method described in the above Embodiment 1. Among them, the computer-readable storage medium may include, but is not limited to, any type of disk, including a floppy disk, an optical disk, a DVD, a CD-ROM, a microdrive, and a magneto-optical disk, a ROM, a RAM, an EPROM, an EEPROM, a DRAM, a VRAM, a flash memory device, a magnetic card or an optical card, a nanosystem (including a molecular memory IC), or any type of medium or device suitable for storing instructions and / or data.

[0085] It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should understand that the present invention is not limited by the described action sequence, because according to the present invention, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0086] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0087] In several embodiments provided by the present invention, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some service interfaces, and the indirect coupling or communication connection of the device or unit can be in an electrical or other form.

[0088] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, the functional units in each embodiment of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0089] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. And the aforementioned memory includes: USB flash drives, read-only memory (ROM), random access memory (RAM), external hard drives, magnetic disks, or optical discs, etc., which are various media that can store program codes.

[0090] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing relevant hardware through a program. This program can be stored in a computer-readable memory, and the memory can include: flash drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs, etc.

[0091] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including", or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements not only includes those elements, but also includes other elements that are not explicitly listed, or further includes elements that are inherent to such a process, method, article, or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device that includes the element.

[0092] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific embodiments of the present invention are only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A method for controlling the centering balance of a steel strip, characterized in that: include: Acquire the centering parameters of the steel belt, wherein the centering parameters at least include the width and centering distance of the steel belt, wherein the centering distance is the running distance of the steel belt between the centering cylinders symmetrically arranged on both sides of the steel belt; According to the centering parameters and the preset center line position information, the telescopic stroke of the centering cylinders on both sides of the steel belt is adjusted to push the steel belt to the center line position for centering operation; the telescopic stroke includes a first stroke of the left centering cylinder and a second stroke of the right centering cylinder; Acquire the centering data of the steel belt during its centering operation, and correct the telescopic stroke in real time according to the centering data, so that the steel belt runs at the position of the center line; the centering data at least includes the position information of the steel belt and the surface feature data of the steel belt, wherein the surface feature data is the image feature of the steel belt when it is squeezed; the real-time correction includes the stroke correction for the single-sided centering cylinder and the stroke correction for the double-sided centering cylinder.

2. A method for controlling the centering balance of a steel strip according to claim 1, characterized in that: The center line is preset, specifically including: The central area of ​​the center line is preset based on the ratio of the width of the steel strip to the centering distance, and the width of the central area is smaller than the width of the steel strip, and the center line of the central area overlaps with the center line of the centering distance; The center line is located at any position in the central area, and the center line is a straight line.

3. A method for controlling the centering balance of a steel strip according to claim 1, characterized in that: Adjusting the telescopic stroke of the centering cylinders on both sides of the steel belt according to the centering parameters and the preset center line position information specifically includes: Obtaining the position information of the center line and the centering parameters; Calculate the travel distance between the two side boundaries of the centering distance and the two side ends of the steel strip when the center line of the steel strip overlaps with the center line, the travel distance including a first distance on the left side and a second distance on the right side; The first stroke of the left centering cylinder is adjusted according to the first distance, and the second stroke of the right centering cylinder is adjusted according to the second distance.

4. A method for controlling the centering balance of a steel strip according to claim 1, characterized in that: Acquiring the position information of the steel belt during centering operation specifically includes: Acquire the first detection data of the left position sensor carried by the left centering cylinder, and acquire the second detection data of the right position sensor carried by the right centering cylinder; the first detection data is the real-time stroke data of the left centering cylinder, and the second detection data is the real-time stroke data of the right centering cylinder; The position information of the steel strip is calculated based on the first detection data and the second detection data.

5. The method for controlling the centering balance of a steel strip according to claim 1, characterized in that: Acquiring the surface feature data of the steel strip during centering operation specifically includes: Acquire image data of the steel strip, wherein the image data is collected by an image detection unit located directly above the center line; The surface feature data is identified based on the image data, where the surface feature data is the image feature of the steel strip when it is squeezed, and the image feature at least includes the surface light and shadow and the surface color of the steel strip when it is squeezed.

6. A method for controlling the centering balance of a steel strip according to claim 1, characterized in that: Correcting the telescopic stroke in real time according to the centering data specifically includes: Obtain the position information of the steel strip and determine whether the position of the steel strip is on the center line: If not, the deviation between the center line of the steel belt during operation and the center line is calculated according to the position information of the steel belt, and the telescopic stroke is corrected based on the deviation; the correction is for the stroke of the centering cylinders on both sides; If so, the current telescopic stroke is maintained.

7. A method for controlling the centering balance of a steel strip according to claim 6, characterized in that: Also includes: Real-time detection of whether the steel strip has the surface feature data: If not, maintain the current telescopic stroke; If yes, then acquiring the image data of the steel strip, and calculating the offset value between the midline of the steel strip when it is running and the center line according to the image data; Determine whether the offset value is zero: If so, shorten the telescopic stroke of the centering cylinders on both sides to make the surface feature data disappear; If not, shortening the telescopic stroke of the centering cylinder on the side with the longer telescopic stroke according to the offset value, so that the surface feature data disappears; The position information of the center line is corrected according to the offset value to generate correction information of the center line.

8. A device for controlling the centering balance of a steel strip, characterized in that: include: Parameter preset module: obtains the centering parameters of the steel belt, which at least include the width and centering distance of the steel belt. The centering distance is the running distance of the steel belt between the centering cylinders symmetrically arranged on both sides of the steel belt; Centering operation module: adjust the telescopic stroke of the centering cylinders on both sides of the steel belt according to the centering parameters and the preset center line position information, and push the steel belt to the center line position for centering operation; the telescopic stroke includes the first stroke of the left centering cylinder and the second stroke of the right centering cylinder; Centering correction module: obtains the centering data of the steel belt during centering operation, and corrects the telescopic stroke in real time according to the centering data, so that the steel belt runs at the center line position; the centering data at least includes the position information of the steel belt and the surface feature data of the steel belt, wherein the surface feature data is the image feature of the steel belt when it is squeezed; Real-time correction includes stroke correction for single-side centering cylinder and stroke correction for double-side centering cylinder.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for controlling the centering balance of a steel strip as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a method for controlling the centering and balancing of a steel strip as claimed in any one of claims 1 to 7 are implemented.

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