Online processing method and system for strip steel edge defects

Abstract

The invention discloses an online processing method and system for strip steel edge defects, and relates to the technical field of strip steel production, the method is applied to the online processing system for the strip steel edge defects, and the method comprises the steps that a shooting device continuously shoots real-time pictures of strip steel edges from the two sides of the strip steel in the width direction; the controller judges whether each real-time picture has preset defect characteristics or not, if yes, defect information is determined according to the real-time pictures, and the defect information comprises first distribution positions of defects on the strip steel; when the controller determines that the defect position reaches the relative position of the polishing device, the driving assembly is controlled to stop driving the strip steel to run; and the controller controls the polishing device to automatically polish the defect position according to the defect information. According to the invention, the edge defect of the entrance section can be identified and processed in time.

Description

Technical Field

[0001] This application relates to the technical field of strip production, and in particular, to an on-line processing method and system for strip edge defects. Background Art

[0002] When normalizing treatment is required for silicon steel products, the quality requirements are relatively high, and serious organizational defects or surface defects, especially edge defects, are not allowed on the strip.

[0003] Currently, to solve the above problems, the quality of the strip edge is usually detected before normalizing treatment, and corresponding treatment is carried out according to the detection results. However, the edge defects generated during the normalizing treatment process cannot be identified and processed in a timely manner. Summary of the Invention

[0004] Embodiments of this application provide an on-line processing method and system for strip edge defects, which can identify and process edge defects in the entrance section in a timely manner.

[0005] Other features and advantages of this application will become apparent through the following detailed description, or will be partially learned through the practice of this application.

[0006] According to a first aspect of the embodiments of this application, an on-line processing method for strip edge defects is provided, which is applied to an on-line processing system for strip edge defects. The system includes a photographing component, a grinding component, a driving component for driving and stopping the strip, and a controller. The photographing component and the grinding component are arranged at the entrance section of the normalizing unit. The photographing component includes two photographing devices respectively located on both sides of the strip in the width direction. The grinding component includes two grinding devices respectively located on both sides of the strip in the width direction. The grinding component is located between the photographing component and the normalizing furnace. The method includes: The photographing devices respectively continuously photograph real-time pictures of the strip edges from both sides of the strip in the width direction; The controller determines whether each of the real-time pictures has a preset defect feature. If so, defect information is determined according to the real-time picture, where the defect information includes the first distribution position of the defect on the strip; When the controller determines that the defect position reaches the relative position of the grinding device, it controls the driving component to stop driving the strip; The controller controls the grinding device to automatically grind the defect position according to the defect information.

[0007] In some embodiments of this application, based on the foregoing solution, the determining defect information according to the real-time picture includes: Determine the first distribution position according to the shooting moment of the real-time picture, the shooting device that shoots the real-time picture, and the second distribution position of the defect in the real-time picture.

[0008] In some embodiments of the present application, based on the foregoing solution, the defect information further includes the defect depth, and determining the defect information according to the real-time picture includes: Determine the defect depth according to the light and darkness of the second distribution position of the defect in the real-time picture; The controller controls the grinding device to automatically grind the defect position according to the defect information, including: Determine the grinding depth in the strip width direction according to the defect depth, and control the grinding device to automatically grind the defect position in the strip width direction according to the grinding depth.

[0009] In some embodiments of the present application, based on the foregoing solution, the defect information further includes the defect length, and determining the defect information according to the real-time picture includes: Determine the defect length according to at least one continuously shot real-time picture; The controller controls the grinding device to automatically grind the defect position according to the defect information, including: Determine the grinding length in the strip length direction according to the defect length, and control the grinding device to automatically grind the defect position in the strip length direction according to the grinding length.

[0010] In some embodiments of the present application, based on the foregoing solution, the length direction of the real-time picture is the strip length direction, and determining the defect length according to at least one continuously shot real-time picture includes: Identify the first defect contour in the real-time picture; Judge whether the edge of the first defect contour is located at the edge of the length direction of the real-time picture. If not, determine the length of the first defect contour as the defect length. If so, define the real-time picture as a picture to be spliced, and splice at least two of the continuously shot pictures to be spliced to obtain a target picture; Identify the second defect contour in the target picture, and determine the length of the second defect contour as the defect length.

[0011] In some embodiments of the present application, based on the foregoing solution, the shooting device continuously shoots real-time pictures of the strip edge from both sides in the strip width direction, including: Drive the shooting device to move in the strip width direction so that the corresponding shooting position of the shooting device and the strip edge maintain a preset distance.

[0012] In some embodiments of the present application, based on the foregoing solution, the method further includes: Detect whether the strip is broken. If the strip is detected to be broken, control the photographing device to move away from the edge of the strip.

[0013] According to a second aspect of the present application, there is provided an on-line processing system for strip edge defects, including a photographing assembly, a grinding assembly, a driving assembly for driving the strip to run and stop running, and a controller. The photographing assembly includes two photographing devices respectively located on both sides in the width direction of the strip. The two photographing devices are used to continuously photograph real-time pictures of the strip edges respectively from both sides in the width direction of the strip. The grinding assembly includes two grinding devices respectively located on both sides in the width direction of the strip. The grinding assembly is located between the photographing assembly and the normalizing furnace. The controller is used to judge whether each real-time picture has a preset defect feature. If so, determine defect information according to the real-time picture, wherein the defect information includes a first distribution position of the defect on the strip. The controller is further used to control the driving assembly to stop driving the strip to run when determining that the defect position reaches the relative position of the grinding device. The controller is further used to control the grinding device to automatically grind the defect position according to the defect information.

[0014] In some embodiments of the present application, based on the foregoing solution, the photographing device includes a photographing device and a first driving mechanism for driving the photographing device to move in the width direction of the strip. The grinding device includes a grinding device and a second driving mechanism for driving the grinding device to move in the width direction and the length direction of the strip.

[0015] In some embodiments of the present application, based on the foregoing solution, the photographing device further includes a position detection mechanism, a strip limiting mechanism and a protection frame. The position detection mechanism is used to detect the distance between the strip edge and the photographing device. The strip limiting mechanism is used to limit the movement of the strip in the up and down directions. The protection frame is used to protect the photographing device. The distance between the end face of the protection frame and the strip edge is less than the distance between the photographing device and the strip edge.

[0016] The beneficial effects of the present application are as follows: Judge whether there is a defect according to the real-time picture, that is, identify the strip edge defect. If there is a defect, stop the defect position at the relative grinding position and grind the defect position, that is, grind the position with the strip edge defect, so as to realize the timely identification and treatment of the strip edge defect.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. Description of the Drawings

[0018] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application. Obviously, the accompanying drawings in the following description are only some embodiments of this application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings: Figure 1 A schematic diagram of the inlet section is shown; Figure 2 A flowchart of an on-line processing method for strip edge defects in an embodiment of this application is shown; Figure 3 A schematic diagram of the photographing assembly in an embodiment of this application is shown; Figure 4 A side view schematic diagram of the first mounting plate in an embodiment of this application is shown; Figure 5 A top view schematic diagram of the first flat plate in an embodiment of this application is shown; Figure 6 A schematic diagram of the grinding assembly in an embodiment of this application is shown. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, rather than all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

[0020] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to give a full understanding of the embodiments of this application. However, those skilled in the art will realize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0021] The block diagrams shown in the accompanying drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0022] The flowcharts shown in the accompanying drawings are merely illustrative and not necessarily include all the content and operations / steps, nor are they necessarily executed in the described order. For example, some operations / steps can be decomposed, while some operations / steps can be combined or partially combined. Therefore, the actual execution order may change according to the actual situation.

[0023] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0024] Figure 1 The schematic diagram of the inlet section is shown. Refer to Figure 1 For a better understanding of the embodiments of the present application, the normalizing unit is described as follows: The normalizing unit includes a normalizing unit inlet section, a normalizing furnace, and a normalizing unit outlet section. The strip steel enters the normalizing furnace from the normalizing unit inlet section. The strip steel is normalized in the normalizing furnace, and the strip steel after normalization enters the normalizing unit outlet section from the normalizing furnace. The normalizing unit inlet section includes a decoiler ( Figure 1 the corresponding position of the decoiler in Figure 1 ), a welding device ( Figure 1 the corresponding position of the welding in Figure 1 ), a front guiding roller ( Figure 1 the corresponding position of the strip steel heating in Figure 2 ), a front tension roller ( Figure 2 ), a strip steel heating device ( Figure 2 ), a crescent shear, a rear guiding roller (

[0025] Figure 2 The flowchart of an on-line processing method for strip steel edge defects in the embodiments of the present application is shown. Refer to Figure 1 and Figure 2 A method for on-line processing of strip steel edge defects is provided, which is applied to an on-line processing system for strip steel edge defects. The system includes a photographing component, a grinding component, a driving component for driving the strip steel to run and stop running, and a controller. The photographing component and the grinding component are arranged in the normalizing unit inlet section. The photographing component includes two photographing devices respectively located on both sides of the strip steel in the width direction. The grinding component includes two grinding devices respectively located on both sides of the strip steel in the width direction. The grinding component is located between the photographing component and the normalizing furnace. The method at least includes S1 to S4, which are introduced in detail as follows: In step S1, the photographing device continuously takes real-time pictures of the strip edges from both sides in the strip width direction, that is, one photographing device takes real-time pictures of the strip edge from one side in the strip width direction, and the other photographing device takes real-time pictures of the strip edge from the other side in the strip width direction. When taking the real-time pictures, the strip edge can be photographed vertically, that is, the photographing direction is perpendicular to the strip edge. Photographing is performed from both sides in the strip width direction. The photographing device continuously taking real-time pictures of the strip edges from both sides in the strip width direction can be that two photographing devices continuously take real-time pictures of the strip edges from both sides in the strip width direction.

[0026] In some embodiments, the photographing device is located between the circular shear and the back tension roll, and the grinding device is located between the back tension roll and the entry loop.

[0027] In some embodiments, the two grinding devices are arranged oppositely.

[0028] In step S2, the controller determines whether each real-time picture has a preset defect feature. If so, defect information is determined according to the real-time picture, where the defect information includes the first distribution position of the defect on the strip. The preset defect feature can be one or more corresponding picture features of edge crack, burr chain, edge roughness, or abrasion. The first distribution position can be the position relative to the strip head or the position relative to the strip tail. The strip head is the head in the strip length direction, and the strip tail is the tail in the strip length direction.

[0029] In step S3, when the controller determines that the defect position reaches the relative position of the grinding device, the controller controls the driving component to stop driving the strip to run.

[0030] In step S4, the controller controls the grinding device to automatically grind the defect position according to the defect information.

[0031] In some embodiments, when controlling the grinding device to automatically grind the defect position, it further includes: when the automatic grinding ends, the controller controls the driving component to make the strip resume running.

[0032] In some embodiments, controlling the grinding device to automatically grind the defect position includes: controlling the grinding device relative to the defect position to automatically grind the defect position or simultaneously controlling the two grinding devices to automatically grind the defect position. The grinding device relative to the defect position and the defect position are on the same side in the strip width direction.

[0033] In some embodiments, the simultaneous control of the two grinding devices to automatically grind the defective position includes: simultaneously controlling the two grinding devices to perform automatic grinding with the same depth and the same length on the defective position to ensure the centering of the strip steel.

[0034] In some embodiments, the grinding position is located between the back tension roll and the entry loop.

[0035] In some embodiments, the determination of the defect information based on the real-time picture includes: determining the first distribution position based on the shooting moment of the real-time picture, the shooting device that shoots the real-time picture, and the second distribution position of the defect in the real-time picture.

[0036] In some embodiments, the determination based on the shooting moment of the real-time picture, the shooting device that shoots the real-time picture, and the second distribution position of the defect in the real-time picture includes: determining the real-time strip steel edge position corresponding to the real-time picture based on the shooting moment of the real-time picture; in the real-time strip steel edge position, determining the defective position based on the second distribution position; and determining on which side of the strip steel width direction the defective position is located based on the shooting device that shoots the real-time picture. For example, the length of the real-time picture in the strip steel length direction is 50 mm, the side close to the strip head of the real-time picture is the first side, and the side close to the strip tail is the second side. If the real-time strip steel edge position is from the 100th to the 150th mm from the strip head position, the defect distribution position is from the 10th to the 20th mm from the first side of the real-time picture, and the shooting device that shoots the real-time picture is located on the left side of the strip steel width direction, then the defective position is at the position from the 100 + 10 mm to 100 + 20 mm from the strip head position on the left side of the strip steel width direction, that is, at the position from the 110th to the 120th mm from the strip head position on the left side of the strip steel width direction.

[0037] In some embodiments, the determination of the real-time strip steel edge position corresponding to the real-time picture based on the shooting moment of the real-time picture includes: determining the target strip steel position based on the shooting moment and the target relationship, where the target relationship is the corresponding relationship between the target shooting moment and the target strip steel edge position.

[0038] In some embodiments, it further includes: real-time detecting the strip steel edge position corresponding to the real-time picture, and determining the target relationship based on the detection result. The strip steel edge position corresponding to the real-time picture is the strip steel edge position opposite to the shooting device when shooting the real-time picture.

[0039] In some embodiments, the real-time detection of the strip edge position corresponding to the real-time picture includes: obtaining the starting time when the strip head reaches the strip edge position opposite to the photographing device; after the starting time, using the encoder of the back tension roll to detect the running distance of the first strip in real time, then the distance between the strip edge position corresponding to the real-time picture and the strip head is the running distance of the first strip, that is, the distance of the strip edge position corresponding to the real-time picture relative to the strip head is the running distance of the first strip.

[0040] In some embodiments, before obtaining the starting time when the strip head reaches the strip edge position opposite to the photographing device, it further includes: obtaining the target distance between the strip head detection position and the photographing position; detecting the strip head at the strip head detection position, using the encoder of the back tension roll to detect the running distance of the second strip in real time, when the running distance of the second strip is equal to the target distance, the edge of the strip head reaches the position opposite to the photographing device.

[0041] In some embodiments, the defect information further includes the defect depth. The determination of the defect information according to the real-time picture includes: determining the defect depth according to the light and darkness of the second distribution position of the defect in the real-time picture; the controller controls the grinding device to automatically grind the defect position according to the defect information, including: determining the grinding depth in the strip width direction according to the defect depth, and controlling the grinding device to automatically grind the defect position in the strip width direction according to the grinding depth. The grinding depth is greater than or equal to the defect depth to fully grind the strip edge defect.

[0042] In some embodiments, the determination according to the light and darkness of the second distribution position of the defect in the real-time picture includes: determining the three-dimensional shape corresponding to the defect position according to the light and darkness of the second distribution position of the defect in the real-time picture; determining the defect depth according to the three-dimensional shape.

[0043] In some embodiments, the defect information further includes the defect length. The determination of the defect information according to the real-time picture includes: determining the defect length according to at least one continuously taken real-time picture; the controller controls the grinding device to automatically grind the defect position according to the defect information, including: determining the grinding length in the strip length direction according to the defect length, and controlling the grinding device to automatically grind the defect position in the strip length direction according to the grinding length. The grinding length is greater than or equal to the defect length to fully grind the strip edge defect.

[0044] In some embodiments, the method further includes: obtaining a length positioning deviation; determining the grinding length according to the length positioning deviation and the defect length. The grinding length can be the sum of twice the positioning deviation and the defect length. For example, if the length positioning deviation is 50 mm, the defect position is 230 mm away from the weld, and the defect length is 20 mm, then the grinding length is 50 * 2 + 20 = 120 mm. When the strip stops running, 120 mm of the strip edge needs to be ground.

[0045] In some embodiments, the method further includes: if the grinding depth is greater than or equal to half of the strip width, the defect position is not automatically ground, and an alarm message is issued. If the grinding depth is greater than or equal to half of the strip width and the defect position is ground, it will cause the strip to break, leading to danger.

[0046] In some embodiments, the length direction of the real-time picture is the strip length direction, and the determining the defect length according to at least one continuously captured real-time picture includes: identifying a first defect contour in the real-time picture; determining whether the edge of the first defect contour is located at the edge of the length direction of the real-time picture. If not, the length of the first defect contour is determined as the defect length. If so, the real-time picture is defined as a picture to be spliced, and at least two of the continuously captured pictures to be spliced are spliced to obtain a target picture; identifying a second defect contour in the target picture, and determining the length of the second defect contour as the defect length.

[0047] In some embodiments, the photographing device continuously captures real-time pictures of the strip edge from both sides in the strip width direction, including: driving the photographing device to move in the strip width direction so that the corresponding photographing position of the photographing device and the strip edge maintain a preset distance. The photographing position and the strip edge maintaining a preset distance enables the focal length of the photographing device to be fixed, ensuring the quality of the real-time picture and facilitating defect identification.

[0048] In some embodiments, the method further includes: detecting whether the strip breaks. If it is detected that the strip breaks, the photographing device is controlled to move away from the strip edge.

[0049] In some embodiments, the detecting whether the strip breaks includes: detecting the real-time tension of the tension roll; determining the tension deviation between the real-time tension and the preset tension; if the time when the absolute value of the tension deviation is greater than the tension threshold is greater than the time threshold, the strip breaks. The tension threshold can be 30% of the preset tension, and the time threshold can be 1.5 s. The tension roll can be a front tension roll or a rear tension roll.

[0050] In some embodiments, detecting whether the strip is broken includes: when the photographing device remains stationary, detecting the real-time distance between the photographing device and the edge of the strip, and determining the change speed of the real-time distance according to the real-time distance; if the change speed is greater than a preset speed, the strip is broken. The change speed can be 10 mm / s.

[0051] In some embodiments, the method further includes: when the difference between the real-time current and the no-load current of the second motor is greater than a preset current, the grinding wheel contacts the edge of the strip. The no-load current is the current when the grinding wheel does not contact the edge of the strip, and the preset current can be 20% to 40% of the no-load current.

[0052] Figure 3 The schematic diagram of the photographing assembly in the embodiment of the present application is shown. Figure 4 The side view schematic diagram of the first mounting plate in the embodiment of the present application is shown. Figure 5 The top view schematic diagram of the first flat plate in the embodiment of the present application is shown. Figure 6 The schematic diagram of the grinding assembly in the embodiment of the present application is shown. Figures 3 to 6 In the figure, 1 is the first motor, 2 is the first lead screw, 3 is the first slider, 4 is the first mounting plate, 5 is the photographing device, 6 is the protection frame, 7 is the baffle, 8 is the strip, 9 is the first flat plate, 10 is the first mounting groove, 11 is the first guide rod, 12 is the third slider, 13 is the second motor, 14 is the second lead screw, 15 is the second mounting groove, 16 is the third flat plate, 17 is the grinding motor, 18 is the grinding wheel, 19 is the support column, 20 is the third motor, 21 is the second mounting plate, 22 is the second flat plate, 23 is the second slider. Figure 3 and Figure 6 In the figure, the left-right direction is the width direction of the strip, and the front-back direction is the length direction of the strip. See Figures 3 to 6, according to the second aspect of the present application, an on-line processing system for strip edge defects is provided, including a photographing component, a grinding component, a driving component for driving the strip 8 to run and stop running, and a controller. The photographing component includes two photographing devices respectively located on both sides of the strip 8 in the width direction. The two photographing devices are used to continuously photograph real-time pictures of the edges of the strip 8 from both sides of the strip 8 in the width direction. The grinding component includes two grinding devices respectively located on both sides of the strip 8 in the width direction. The grinding component is located between the photographing component and the normalizing furnace. The controller is used to judge whether there is a preset defect feature in each of the real-time pictures. If so, the defect information is determined according to the real-time picture. Among them, the defect information includes the first distribution position of the defect on the strip 8. The controller is further used to control the driving component to stop the strip 8 from running when it is determined that the defect position reaches the relative position of the grinding device. The controller is further used to control the grinding device to automatically grind the defect position according to the defect information.

[0053] In some embodiments, the driving component may include an uncoiler, a front guiding roller, a front tension roller, a rear guiding roller, a rear tension roller and an entry looper at the entry section of the normalizing unit.

[0054] In some embodiments, the photographing device includes a photographing device 5 and a first driving mechanism for driving the photographing device 5 to move in the width direction of the strip 8. The grinding device includes a grinding device and a second driving mechanism for driving the grinding device to move in the width direction and the length direction of the strip 8.

[0055] In some embodiments, the first driving mechanism includes a first flat plate 9 and a first mounting plate 4 for mounting the photographing device 5. A first mounting groove 10 is provided on the first flat plate 9. A first lead screw 2 and two first guiding rods 11 located on both sides of the first lead screw 2 are provided in the first mounting groove 10 along the width direction of the strip 8. The first lead screw 2 is rotatably connected to both sides of the first mounting groove 10. The two first guiding rods 11 are fixedly connected to both sides of the first mounting groove 10. A first slider 3 is provided on the two first guiding rods 11 and the first lead screw 2. The first slider 3 is connected to the first mounting plate 4. A first motor 1 for connecting the first lead screw 2 is provided on the first flat plate 9. The first motor 1 drives the first lead screw 2 to rotate. The first lead screw 2 drives the first slider 3 to rotate. The first slider 3 is restricted by the first guiding rod 11 and moves in the length direction of the first lead screw 2 to drive the first mounting plate 4 and the photographing device 5 to move.

[0056] In some embodiments, the first driving mechanism includes a first electric push rod, a first slide rail disposed along the width direction of the strip steel 8, and a first mounting plate 4 for mounting the photographing device 5. The first slide rail is connected to the first mounting plate 4, and the first electric push rod is connected to the first mounting plate 4. The first electric push rod drives the first mounting plate 4 to move along the first slide rail.

[0057] In some embodiments, the photographing device further includes a position detection mechanism, a strip steel 8 limiting mechanism, and a protection frame 6. The position detection mechanism is used to detect the distance between the edge of the strip steel 8 and the photographing device 5. The strip steel 8 limiting mechanism is used to limit the movement of the strip steel 8 in the up and down directions. The protection frame 6 is used to protect the photographing device 5. The distance between the end face of the protection frame 6 and the edge of the strip steel 8 is less than the distance between the photographing device 5 and the edge of the strip steel 8. The position detection mechanism can be a position detection sensor. When the strip steel 8 shakes in the width direction, it first touches the protection frame 6, preventing the edge of the strip steel 8 from touching the photographing device 5.

[0058] In some embodiments, the strip steel 8 limiting mechanism includes two baffles 7 respectively located above and below the photographing device 5. One of the baffles 7 is located above the strip steel 8, and the other baffle 7 is located below the strip steel 8. If the strip steel 8 shakes, on the one hand, when the shaking is severe, the real-time picture is relatively blurred, and misjudgment may occur when judging whether there are preset defect features in the real-time picture. On the other hand, the viewing range of the photographing device 5 is fixed, and it is possible that the edge of the strip steel 8 exceeds the viewing range of the photographing device 5, causing the photographing device 5 to be unable to capture the edge of the strip steel 8. Therefore, baffles 7 are provided above and below the strip steel 8 to prevent the strip steel 8 from shaking, ensuring the imaging quality of the real-time picture and enabling the photographing device 5 to capture the edge of the strip steel 8. The two baffles 7 can be provided on the first mounting plate 4.

[0059] In some embodiments, if the viewing range of the photographing device 5 is ±50 mm, the distance between the baffle 7 above the photographing device 5 and the upper part of the photographing device 5 is 15 mm to 40 mm, and the distance between the baffle 7 below the photographing device 5 and the lower part of the photographing device 5 is 15 mm to 40 mm.

[0060] In some embodiments, the grinding device includes: a grinding wheel 18, the axis of the grinding wheel 18 is perpendicular to the upper end face of the strip steel 8, the upper end face is higher than the upper end face of the strip steel 8, and the lower end face is lower than the lower end face of the strip steel 8; a grinding motor 17, the output shaft of which is connected to the grinding wheel 18. The grinding motor 17 drives the grinding wheel 18 to rotate, and the side face of the grinding wheel 18 grinds the edge of the strip steel 8.

[0061] In some embodiments, if the single grinding depth of the grinding device is less than the defect depth, at least two grindings are performed.

[0062] In some embodiments, the second driving mechanism includes a second mounting plate 21 for mounting the grinding device and a second flat plate 22. A second mounting groove 15 is provided on the second flat plate 22. A second lead screw 14 and two second guide rods located on both sides of the second lead screw 14 are provided along the width direction of the strip steel 8 in the second mounting groove 15. The second lead screw 14 is rotatably connected to both sides of the second mounting groove 15, and the two second guide rods are fixedly connected to both sides of the second mounting groove 15. A second motor 13 for connecting the second lead screw 14 is provided on the second flat plate 22. A second slider 23 is provided on the two second guide rods and the second lead screw 14. A third flat plate 16 is provided on the second slider 23. A third mounting groove is provided on the third flat plate 16. A third lead screw and two third guide rods located on both sides of the third lead screw are provided along the length direction of the strip steel 8 in the third mounting groove. The third lead screw is rotatably connected to both sides of the third mounting groove 15, and the two third guide rods are fixedly connected to both sides of the third mounting groove 15. A third slider 12 is provided on the two third guide rods and the third lead screw. The third slider 12 is connected to the second mounting plate 21. The second motor 13 drives the second lead screw 14 to rotate. The second lead screw 14 drives the second slider 23 to rotate. The second slider 23 is restricted by the second guide rod and does not rotate but moves in the length direction of the second lead screw 14 to drive the third flat plate 16 and the second mounting plate 21 to move in the width direction of the strip steel 8. The third motor 20 drives the third lead screw to rotate. The third lead screw drives the third slider 12 to rotate. The third slider 12 is restricted by the third guide rod and does not rotate but moves in the length direction of the third lead screw 14 to drive the second mounting plate 21 to move in the length direction of the strip steel 8.

[0063] In some embodiments, the second driving mechanism includes a second electric push rod and a second slide rail arranged along the width direction of the strip steel 8. A third slide rail and a third electric push rod are provided along the length direction of the strip steel 8 on the second slide rail. The third slide rail is connected to the second mounting plate 21, and the third electric push rod is connected to the second mounting plate 21. The second electric push rod drives the third slide rail, the third electric push rod and the second mounting plate 21 to move in the width direction of the strip steel 8. The third electric push rod drives the second mounting plate 21 to move in the length direction of the strip steel 8.

[0064] In some embodiments, the system further includes a leading edge detection device, which includes a light source emitter and a light source receiver that are relatively distributed above and below the strip steel 8. A through hole is opened at a set position, and the distance between the set position and the weld is a preset distance. When the through hole passes above or below the light source receiver, the light emitted by the light source emitter passes through the through hole and reaches the light source receiver. The preset distance can be 100 mm.

[0065] In this application, it is determined whether there are defects based on the real-time picture, that is, the edge defects of the strip steel are identified. If there are defects, the defective position is stopped at the target position, and the defective position is polished, that is, the position with edge defects of the strip steel is polished, so as to realize the timely identification and treatment of the edge defects of the strip steel.

[0066] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope and spirit of this application and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. In addition, each functional unit 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.

[0067] In several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of the units can be 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 to each other can be through some interfaces, and the indirect coupling or communication connection of units or modules can be in an electrical or other form.

[0068] The units described as separate components may or may not be physically separated. The components serving as control devices may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0069] 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 storage medium. Based on this understanding, the technical solution of this application, 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 storage medium 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 various embodiments of this application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs.

[0070] The above are only the embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims

1. A method for online processing of strip edge defects, characterized in that: Applicable to an online processing system for edge defects of a strip, the system comprises a photographing component, a grinding component, a driving component for driving the strip to run and stop running, and a controller, the photographing component and the grinding component are arranged at the entrance section of a normalizing unit, the photographing component comprises two photographing devices respectively located on both sides of the strip width direction, the grinding component comprises two grinding devices respectively located on both sides of the strip width direction, the grinding component is located between the photographing component and the normalizing furnace, and the method comprises: The photographing device continuously photographs real-time images of the edges of the steel strip from both sides in the width direction of the steel strip; The controller determines whether each of the real-time images has a preset defect feature, and if so, determines defect information according to the real-time image, wherein the defect information includes a first distribution position of the defect on the strip; When the controller determines that the defect position reaches the relative position of the grinding device, the controller controls the driving component to stop driving the strip steel to run; The controller controls the polishing device to automatically polish the defective position according to the defect information.

2. The method for online processing of strip edge defects according to claim 1 is characterized in that: The determining defect information according to the real-time image includes: The first distribution position is determined according to the shooting time of the real-time picture, the shooting device that shoots the real-time picture, and the second distribution position of the defects in the real-time picture.

3. The method for online processing of strip edge defects according to claim 1 is characterized in that: The defect information also includes defect depth, and determining the defect information according to the real-time image includes: Determining the defect depth according to the brightness of the second distribution position of the defect in the real-time image; The controller controls the grinding device to automatically grind the defect position according to the defect information, including: The grinding depth in the width direction of the steel strip is determined according to the defect depth, and the grinding device is controlled to automatically grind the defect position in the width direction of the steel strip according to the grinding depth.

4. The method for online processing of strip edge defects according to claim 1 is characterized in that: The defect information also includes a defect length, and determining the defect information according to the real-time image includes: Determining the defect length according to at least one continuously taken real-time picture; The controller controls the grinding device to automatically grind the defect position according to the defect information, including: The grinding length in the length direction of the steel strip is determined according to the defect length, and the grinding device is controlled to automatically grind the defect position in the length direction of the steel strip according to the grinding length.

5. The method for online processing of strip edge defects according to claim 4 is characterized in that: The length direction of the real-time picture is the length direction of the strip steel, and the determining the defect length according to at least one continuously taken real-time picture comprises: identifying a first defect outline in the real-time image; Determine whether the edge of the first defect contour is located at the edge of the length direction of the real-time image; if not, determine the length of the first defect contour as the defect length; if so, define the real-time image as a to-be-stitched image, and stitch at least two continuously shot to-be-stitched images to obtain a target image; A second defect contour in the target image is identified, and a length of the second defect contour is determined as the defect length.

6. The method for online processing of strip edge defects according to claim 1, characterized in that: The camera device continuously captures real-time images of the edge of the strip from both sides in the width direction of the strip, including: The photographing device is driven to move in the width direction of the steel strip so that the photographing position corresponding to the photographing device maintains a preset distance from the edge of the steel strip.

7. The method for online processing of strip edge defects according to claim 1, characterized in that: The method further comprises: Detect whether the steel strip is broken. If the steel strip is broken, control the photographing device to move away from the edge of the steel strip.

8. An online processing system for strip edge defects, characterized in that: It includes a shooting component, a grinding component, a driving component for driving the strip to run and stop running, and a controller. The shooting component includes two shooting devices respectively located on both sides of the strip width direction, and the two shooting devices are used to continuously shoot real-time pictures of the edges of the strip from both sides of the strip width direction respectively. The grinding component includes two grinding devices respectively located on both sides of the strip width direction, and the grinding component is located between the shooting component and the normalizing furnace. The controller is used to determine whether each of the real-time pictures has a preset defect feature. If so, the defect information is determined according to the real-time picture, wherein the defect information includes a first distribution position of the defect on the strip; the controller is also used to control the driving component to stop driving the strip to run when it is determined that the defect position reaches the relative position of the grinding device; the controller is also used to control the grinding device to automatically grind the defect position according to the defect information.

9. The online processing system for edge defects of a strip according to claim 8 is characterized in that: The photographing device includes a photographing device and a first driving mechanism that drives the photographing device to move in the width direction of the strip, and the grinding device includes a grinding device and a second driving mechanism that drives the grinding device to move in the width direction and the length direction of the strip.

10. The online processing system for edge defects of a strip according to claim 9, characterized in that: The photographing device also includes a position detection mechanism, a strip limiting mechanism and a protection frame. The position detection mechanism is used to detect the distance between the edge of the strip and the photographing device. The strip limiting mechanism is used to limit the movement of the strip in the up and down directions. The protection frame is used to protect the photographing device. The distance between the end face of the protection frame and the edge of the strip is smaller than the distance between the photographing device and the edge of the strip.

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