Unloading method, device, equipment, medium and program product
By automatically determining the tail position of the steel coil within the coiler and optimizing the actions of the uncoiling trolley and mandrel, the problem of low intelligence in uncoiling during hot rolling production has been solved, achieving automated uncoiling and improving efficiency and steel coil quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHOUGANG JINGTANG IRON & STEEL CO LTD
- Filing Date
- 2026-02-09
- Publication Date
- 2026-06-09
AI Technical Summary
The current hot rolling production uncoiling methods have a low level of intelligence, require a lot of manual intervention, and are difficult to automate to handle problems such as flattened steel coils, which affects production efficiency and steel coil quality.
By automatically determining the tail position of the steel coil within the coiler, controlling the unwinding trolley to perform the unwinding and holding function, and combining the optimized movements of the auxiliary winding roller and mandrel, an automated unwinding process is achieved, including a delayed coil holding time to handle the flattening phenomenon.
It reduced manual intervention, improved unloading efficiency, shortened the production cycle, enhanced the overall capacity of the hot rolling production line, and improved the quality of steel coils.
Smart Images
Figure CN122164778A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of unwinding technology, and in particular to an unwinding method, apparatus, equipment, medium, and procedure product. Background Technology
[0002] In the hot rolling production process, the coiler is a key piece of equipment for coiling strip steel, and its operating efficiency directly affects the production line's capacity utilization. Currently, when using coilers and uncoiling trolleys for uncoiling steel coils, many steps require manual intervention, and it is difficult to automate issues such as coil flattening, resulting in a low level of intelligence. Therefore, there is an urgent need for a new intelligent uncoiling method that reduces manual intervention and can automatically handle problems in the uncoiling process, thereby improving uncoiling efficiency, reducing labor costs, and improving steel coil quality. Summary of the Invention
[0003] This application provides a method, apparatus, equipment, medium, and program for unwinding rolls, which addresses the shortcomings of existing unwinding methods in terms of low intelligence and achieves intelligent unwinding.
[0004] Firstly, this application provides a method for unwinding a roll, comprising: When the steel coil is being tail-fixed for the second time in the coiler, the first position of the tail of the steel coil is determined based on the first method. If the first position is within the preset position range and the unwinding trolley of the coiler is in the locked state, control the steel coil to perform the unwinding and holding function in the coiler; When the steel coil performs the unwinding and holding function, a second position of the tail of the steel coil is determined based on a second method; If the second position is within the preset position range, the roll gap of the coiling aid roller of the coiler is opened to the quick-open position, the mandrel support of the coiler is controlled to move to the open position, and after a delay of the target coiling time, the mandrel diameter of the coiler is controlled to shrink to the unwinding position so that the unwinding trolley unwinds the steel coil from the coiler; the target coiling time is determined based on the steel grade and the shape of the steel coil.
[0005] Optionally, the target loading time is determined in the following way: If the steel grade is a preset steel grade, the target coiling time is determined based on the shape; If the steel grade is not a preset steel grade, the target coiling time is 0 seconds.
[0006] Optionally, determining the target rollout duration based on the shape includes: Based on the shape, a target diameter difference is determined for the steel coil; the target diameter difference is the maximum diameter difference of the steel coil at different angles. If the target diameter difference is less than the first preset value, the target roll-up time is 0 seconds; If the target diameter difference is greater than or equal to a first preset value, the target roll-up time is determined based on the target diameter difference.
[0007] Optionally, determining the target roll-up time based on the target diameter difference includes: If the target diameter difference is equal to the first preset value, the target roll-up time is the first time. If the target diameter difference is greater than the first preset value and less than the second preset value, the target roll-up time is the second time; if the second preset value is greater than the first preset value, the second time is greater than the first time. If the target diameter difference is greater than or equal to the second preset value, the target roll-up time is the third time; the third time is greater than the second time.
[0008] Optionally, determining the first position of the tail of the steel coil based on the first method includes: The first position is determined based on the speed of the mandrel and the target duration; the target duration is the time from the moment the hot metal detector detects the loss to the current moment.
[0009] Optionally, determining the second position of the tail of the steel coil based on the second method includes: Acquire an image of the target steel coil; the target steel coil image is an image including the tail of the steel coil. The target steel coil image is segmented to obtain a segmented image; The second position is determined from the segmented image based on a contour lookup algorithm.
[0010] Secondly, this application also provides an unwinding device, comprising: The first determining module is used to determine the first position of the tail of the steel coil based on the first method when the steel coil is being determined for the second tail in the coiler. The control module is used to control the steel coil to perform an unwinding and holding function in the coiler if the first position is within a preset position range and the unwinding trolley of the coiler is in a locked state. The second determining module is used to determine the second position of the tail of the steel coil based on the second method when the steel coil performs the uncoiling and holding function. The unwinding module is used to, if the second position is within the preset position range, open the roll gap of the winding aid roller of the coiler to the quick-open position, control the mandrel support of the coiler to the open position, and after a delay of a target coil holding time, control the mandrel diameter of the coiler to retract to the unwinding position so that the unwinding trolley unwinds the steel coil from the coiler; the target coil holding time is determined based on the steel grade and the shape of the steel coil.
[0011] Thirdly, this application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect.
[0012] Fourthly, this application also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect.
[0013] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the method described in the first aspect.
[0014] The uncoiling method, apparatus, equipment, medium, and program products provided in this application, when determining through a first method that the first position of the tail of the steel coil is within a preset position range and the uncoiling trolley of the coiler is in a locked state, automatically control the steel coil to perform an uncoiling holding function within the coiler. When determining through a second method that the second position of the tail of the steel coil is within a preset position range, automatically execute subsequent uncoiling operations. Simultaneously, it can perform two actions: opening the roll gap of the coiler's auxiliary coiling roller to the quick-opening position and controlling the coiler's mandrel support to the open position. Simultaneously, after a target coiling time delay, it controls the coiler's mandrel diameter to retract to the uncoiling position, allowing the uncoiling trolley to unload the steel coil from the coiler. This significantly reduces manual intervention in the uncoiling process, lowers labor costs, improves uncoiling efficiency, shortens the production cycle, and enhances the overall capacity of the hot rolling production line. Furthermore, by automatically controlling the coiling within the coiler, it can handle problems such as flattened coils, demonstrating a high degree of intelligence and further improving steel coil quality. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic flowchart of the unwinding method provided in the embodiments of this application; Figure 2 This is one of the structural schematic diagrams of the unwinding device provided in the embodiments of this application; Figure 3 This is a second schematic diagram of the structure of the unwinding device provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0018] This application provides an unloading method, the execution subject of which can be an electronic device, such as a controller. The following description uses a controller as the execution subject of the method. Figure 1 This is a flowchart illustrating the unwinding method provided in an embodiment of this application. (Refer to...) Figure 1 The method may include: Step 110: When the steel coil is being tailed twice in the coiler, the first position of the tail of the steel coil is determined based on the first method. Step 120: If the first position is within the preset position range and the unwinding trolley of the coiler is in the locked state, control the steel coil to perform the unwinding and holding function in the coiler. Step 130: When the steel coil performs the unwinding and holding function, determine the second position of the tail of the steel coil based on the second method; Step 140: If the second position is within the preset position range, open the roll gap of the coiler's auxiliary winding roller to the quick-open position, control the coiler's mandrel support to the open position, and after a delay of the target coiling time, control the coiler's mandrel diameter to shrink to the unwinding position so that the unwinding trolley can unload the steel coil from the coiler; the target coiling time is determined based on the steel grade and shape of the steel coil.
[0019] If the first position of the coil tail is within the preset position range (5-6 o'clock), it indicates that the coil has completed the secondary tail-setting within the coiler. If the unwinding trolley of the coiler is also in the locked state, the controller can automatically execute the unwinding holding function within the coiler. At this time, the controller can recalculate the second position of the coil tail using different methods. If the second position is also within the preset position range, subsequent unwinding operations can begin. Specifically, when the pressure in the locking cylinder chamber is >5 bar, it can be determined that the unwinding trolley is in the locked state. The unwinding holding function ensures that the coil is stationary after the secondary tail-setting is completed, facilitating further assessment of the coil tail's state.
[0020] During unwinding, if the target winding time is zero, the controller can simultaneously execute three actions: opening the roll gap of the winding machine's auxiliary winding roller to the quick-open position, controlling the winding machine's mandrel support to the open position, and controlling the winding machine's mandrel diameter to retract to the unwinding position (the mandrel retracts from its current diameter to 727mm). This eliminates the need for the mandrel support to start operating only after the winding machine's mandrel and auxiliary winding roller have both reached their positions, as is the case in existing technologies. This removes the process interlocking limitations and redundancy in action time that hinder the optimization of production rhythm during the unwinding operation of the winding machine.
[0021] If the target coil holding time is not zero, the controller can simultaneously execute two actions: opening the roll gap of the coiler's auxiliary winding roller to the quick-open position and controlling the coiler's mandrel support to the open position. At the same time, coil holding begins. After the target coil holding time is reached, the controller controls the coiler's mandrel diameter to shrink to the unwinding position. After the mandrel, auxiliary winding roller, and mandrel support have all moved to their positions, the controller controls the unwinding trolley to move laterally to unwind the steel coil out of the coiler.
[0022] The uncoiling method provided in this application, when the first position of the tail of the steel coil is determined to be within a preset position range by a first method and the uncoiling trolley of the coiler is in a locked state, automatically controls the steel coil to perform the uncoiling holding function in the coiler. When the second position of the tail of the steel coil is determined to be within a preset position range by a second method, the subsequent uncoiling operation is automatically executed. Simultaneously, the roll gap of the coiler's auxiliary coiling roller can be opened to the quick-open position, and the mandrel support of the coiler can be controlled to the open position. At the same time, after a target coiling time delay, the mandrel diameter of the coiler is controlled to shrink to the uncoiling position, so that the uncoiling trolley unloads the steel coil from the coiler. This greatly reduces the manual intervention in the uncoiling process, reduces labor costs, improves uncoiling efficiency, shortens the production cycle, and enhances the overall capacity of the hot rolling production line. Moreover, by automatically controlling the coiling within the coiler, it can handle problems such as flat coiling, demonstrating a high degree of intelligence and further improving the quality of the steel coil.
[0023] In some embodiments, the target coiling time is determined as follows: if the steel type is a preset steel type, the target coiling time is determined based on the shape; if the steel type is not a preset steel type, the target coiling time is 0 seconds.
[0024] Furthermore, in some embodiments, determining the target coiling time based on shape includes: determining the target diameter difference of the steel coil based on shape; the target diameter difference is the maximum diameter difference of the steel coil at different angles; if the target diameter difference is less than a first preset value, the target coiling time is 0 seconds; if the target diameter difference is greater than or equal to the first preset value, the target coiling time is determined based on the target diameter difference.
[0025] Furthermore, in some embodiments, determining the target roll-up duration based on the target diameter difference includes: if the target diameter difference is equal to a first preset value, the target roll-up duration is a first duration; if the target diameter difference is greater than the first preset value and less than a second preset value, the target roll-up duration is a second duration; if the second preset value is greater than the first preset value, the second duration is greater than the first duration; if the target diameter difference is greater than or equal to the second preset value, the target roll-up duration is a third duration; the third duration is greater than the second duration.
[0026] The controller can acquire information about the steel type of the steel coil. If the steel coil is not a preset type, it generally does not exhibit flattening, and coiling is not required; the target coiling time is 0 seconds. If the steel coil is a preset type, it may exhibit flattening. In this case, the shape of the steel coil can be used to determine whether flattening is present, thus determining whether coiling is necessary. The controller can acquire an image of the steel coil and determine the target diameter difference based on the image. The target diameter difference is the maximum diameter difference between different angles of the steel coil, reflecting whether the coil is circular. If the target diameter difference is small, less than the first preset value (which can be 20mm), it indicates that the steel coil is basically circular, with minimal flattening, and coiling is unnecessary; the target coiling time is 0 seconds. If the target diameter difference is large, greater than or equal to the first preset value (20mm), it indicates that the steel coil is not circular, is flattened, and coiling is required. Specifically, if the target diameter difference is equal to the first preset value (20mm), the target holding time is the first duration (which can be 60 seconds). If the target diameter difference is greater than or equal to the second preset value (which can be 40mm), the target holding time is the third duration (which can be 120 seconds). If the target diameter difference is greater than the first preset value (20mm) and less than the second preset value (40mm), the target holding time is the second duration. As the target diameter difference increases from 20mm to 40mm, the second duration linearly increases from 60 seconds to 120 seconds.
[0027] The uncoiling method provided in this application determines the target coiling time based on the steel type and shape of the steel coil. When the steel coil exhibits flattening, it can restore the shape of the steel coil by coiling it in the coiler, thereby improving the quality of the steel coil.
[0028] In some embodiments, determining the first position of the tail of the steel coil based on the first method includes: determining the first position based on the speed of the mandrel and a target duration; the target duration is the duration from the moment the hot metal detector detects loss to the current moment.
[0029] If the speed of the mandrel is The target duration is the running time of the strip after it is detected by the hot metal detector (HMD). The tracking distance of the strip tail through the take-up HMD is , It can reflect the first position of the tail of the steel coil. The formula for calculating integrals is:
[0030] When the mechanical distance of HMD from the 6 o'clock direction is < The mechanical distance from HMD to the 5 o'clock position indicates that the first position of the coil tail is within the preset position range (5-6 o'clock direction), and the secondary tail positioning of the coil is successful.
[0031] The uncoiling method provided in this application, when the first position of the tail of the steel coil is determined to be within a preset position range by a first method and the uncoiling trolley of the coiler is in a locked state, automatically controls the steel coil to perform the uncoiling holding function in the coiler. When the second position of the tail of the steel coil is determined to be within a preset position range by a second method, the subsequent uncoiling operation is automatically executed. Simultaneously, the roll gap of the coiler's auxiliary coiling roller can be opened to the quick-open position, and the mandrel support of the coiler can be controlled to the open position. At the same time, after a target coiling time delay, the mandrel diameter of the coiler is controlled to shrink to the uncoiling position, so that the uncoiling trolley unloads the steel coil from the coiler. This greatly reduces the manual intervention in the uncoiling process, reduces labor costs, improves uncoiling efficiency, shortens the production cycle, and enhances the overall capacity of the hot rolling production line. Moreover, by automatically controlling the coiling within the coiler, it can handle problems such as flat coiling, demonstrating a high degree of intelligence and further improving the quality of the steel coil.
[0032] In some embodiments, determining the second position of the tail of the steel coil based on the second method includes: acquiring a target steel coil image; the target steel coil image is an image including the tail of the steel coil; performing image segmentation on the target steel coil image to obtain a segmented image; and determining the second position from the segmented image based on a contour search algorithm.
[0033] The target steel coil image can be a pre-processed image. Pre-processing may include denoising, illumination correction, etc. The specific image segmentation method can be selected according to the actual situation, such as threshold segmentation, edge detection-based segmentation, or model-based segmentation. Then, the controller can determine the second position of the tail of the steel coil from the segmented image using a contour search algorithm.
[0034] The unwinding method provided in this application automatically controls the steel coil to perform an unwinding and holding function within the coiler when the first position of the tail of the steel coil is determined to be within a preset position range by a first method and the unwinding trolley of the coiler is in a locked state. When the second position of the tail of the steel coil is determined to be within a preset position range by a second method, the subsequent unwinding operation is automatically executed. This ensures the accuracy of the secondary positioning of the steel coil and the safety of the unwinding operation.
[0035] Figure 2 This is one of the structural schematic diagrams of the unwinding device provided in the embodiments of this application. For example... Figure 2 As shown, the unwinding method provided in this application may include the following steps: Steel coil 6 completes secondary tail setting within the coiler; The unloading trolley 2 is in the locked position; The steel coil automatically performs the unwinding and holding function within the coiler; The tail section of the steel strip is positioned at the 5-6 o'clock position. Start unloading: The gap between the tail-end auxiliary winding rollers 1) 5 and 3) is opened to the quick-opening position; The spindle support 1 moves to the open position; After a delay of the target winding time, the mandrel diameter 4mm shrinks from the second expansion position to the unwinding position; The unloading trolley 2 begins to unload the steel coil from the coiler.
[0036] This application analyzes the factors affecting the winding and unwinding rhythm and proposes two key improvements. First, the timing of the mandrel support's action is optimized by advancing the start time of the mandrel support by 2 seconds, reducing waiting time. Second, an automatic coil-holding function is developed, extending the mandrel's residence time in the coiler during the second expansion phase to shape the steel coil, reducing the occurrence of flattening during unwinding, and avoiding excessive manual coil-holding operations that could disrupt the unwinding rhythm.
[0037] The unwinding device provided in this application is described below. The unwinding device described below can be referred to in correspondence with the unwinding method described above.
[0038] Figure 3 This is the second structural schematic diagram of the unwinding device provided in the embodiments of this application. (Refer to...) Figure 3 The unwinding device provided in this application embodiment may include: The first determining module 310 is used to determine the first position of the tail of the steel coil based on the first method when the steel coil is being fixed for the second time in the coiler. The control module 320 is used to control the steel coil to perform an unwinding and holding function in the coiler if the first position is within a preset position range and the unwinding trolley of the coiler is in a locked state. The second determining module 330 is used to determine the second position of the tail of the steel coil based on a second method when the steel coil performs the unwinding and holding function. The unwinding module 340 is used to, if the second position is within the preset position range, open the roll gap of the winding aid roller of the coiler to the quick-open position, control the mandrel support of the coiler to the open position, and after a delay of a target coil holding time, control the mandrel diameter of the coiler to retract to the unwinding position so that the unwinding trolley unwinds the steel coil from the coiler; the target coil holding time is determined based on the steel grade and the shape of the steel coil.
[0039] The uncoiling device provided in this application embodiment automatically controls the steel coil to perform an uncoiling and holding function within the coiler when the first position of the tail of the steel coil is determined to be within a preset position range by a first method and the uncoiling trolley of the coiler is in a locked state. When the second position of the tail of the steel coil is determined to be within a preset position range by a second method, the device automatically performs subsequent uncoiling operations. It can simultaneously perform two actions: opening the roll gap of the coiler's auxiliary coiling roller to the quick-opening position and controlling the mandrel support of the coiler to the open position. It also simultaneously controls the mandrel diameter of the coiler to retract to the uncoiling position after a target coiling time delay, so that the uncoiling trolley unloads the steel coil from the coiler. This greatly reduces the manual intervention in the uncoiling process, reduces labor costs, improves uncoiling efficiency, shortens the production cycle, and enhances the overall capacity of the hot rolling production line. Moreover, by automatically controlling the coiling within the coiler, it can handle problems such as flattened coils, demonstrating a high degree of intelligence and further improving the quality of the steel coil.
[0040] Specifically, the unwinding device provided in this application embodiment can implement all the method steps implemented by the method embodiment with the controller as the execution subject, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.
[0041] Figure 4 This is a schematic diagram of the structure of the electronic device provided in an embodiment of this application. For example... Figure 4 As shown, the electronic device may include: a processor 410, a communications interface 420, a memory 430, and a communication bus 440, wherein the processor 410, the communications interface 420, and the memory 430 communicate with each other via the communication bus 440. The processor 410 can call logical instructions in the memory 430 to execute unloading methods, such as: When the steel coil is being tail-fixed for the second time in the coiler, the first position of the tail of the steel coil is determined based on the first method. If the first position is within the preset position range and the unwinding trolley of the coiler is in the locked state, control the steel coil to perform the unwinding and holding function in the coiler; When the steel coil performs the unwinding and holding function, a second position of the tail of the steel coil is determined based on a second method; If the second position is within the preset position range, the roll gap of the coiling aid roller of the coiler is opened to the quick-open position, the mandrel support of the coiler is controlled to move to the open position, and after a delay of the target coiling time, the mandrel diameter of the coiler is controlled to shrink to the unwinding position so that the unwinding trolley unwinds the steel coil from the coiler; the target coiling time is determined based on the steel grade and the shape of the steel coil.
[0042] Furthermore, the logical instructions in the aforementioned memory 430 can be implemented as software functional units and, when sold or used as independent products, 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 a part of the 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 to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
[0043] On the other hand, this application also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the unloading methods provided by the above methods, including, for example: When the steel coil is being tail-fixed for the second time in the coiler, the first position of the tail of the steel coil is determined based on the first method. If the first position is within the preset position range and the unwinding trolley of the coiler is in the locked state, control the steel coil to perform the unwinding and holding function in the coiler; When the steel coil performs the unwinding and holding function, a second position of the tail of the steel coil is determined based on a second method; If the second position is within the preset position range, the roll gap of the coiling aid roller of the coiler is opened to the quick-open position, the mandrel support of the coiler is controlled to move to the open position, and after a delay of the target coiling time, the mandrel diameter of the coiler is controlled to shrink to the unwinding position so that the unwinding trolley unwinds the steel coil from the coiler; the target coiling time is determined based on the steel grade and the shape of the steel coil.
[0044] Furthermore, this application also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer is able to perform the steps of the unloading method provided by the above methods, for example including: When the steel coil is being tail-fixed for the second time in the coiler, the first position of the tail of the steel coil is determined based on the first method. If the first position is within the preset position range and the unwinding trolley of the coiler is in the locked state, control the steel coil to perform the unwinding and holding function in the coiler; When the steel coil performs the unwinding and holding function, a second position of the tail of the steel coil is determined based on a second method; If the second position is within the preset position range, the roll gap of the coiling aid roller of the coiler is opened to the quick-open position, the mandrel support of the coiler is controlled to move to the open position, and after a delay of the target coiling time, the mandrel diameter of the coiler is controlled to shrink to the unwinding position so that the unwinding trolley unwinds the steel coil from the coiler; the target coiling time is determined based on the steel grade and the shape of the steel coil.
[0045] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.
[0046] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.
[0047] It should also be noted that in the embodiments of this application, the terms "first," "second," etc., are used to distinguish similar objects, and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, and the number of objects is not limited. For example, the first object can be one or more.
[0048] In this application embodiment, the term "and / or" describes the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.
[0049] In this application's embodiments, "determine B based on A" means that factor A must be considered when determining B. It is not limited to "B can be determined based solely on A," but should also include: "determine B based on A and C," "determine B based on A, C, and E," "determine C based on A, and further determine B based on C," etc. Additionally, it can include using A as a condition for determining B, for example, "when A meets the first condition, determine B using the first method"; another example, "when A meets the second condition, determine B," etc.; another example, "when A meets the third condition, determine B based on the first parameter," etc. Of course, it can also be a condition where A is a factor in determining B, for example, "when A meets the first condition, determine C using the first method, and further determine B based on C," etc.
[0050] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.
[0051] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A method for unwinding a winding, characterized in that, include: When the steel coil is being tail-fixed for the second time in the coiler, the first position of the tail of the steel coil is determined based on the first method. If the first position is within the preset position range and the unwinding trolley of the coiler is in the locked state, control the steel coil to perform the unwinding and holding function in the coiler; When the steel coil performs the unwinding and holding function, a second position of the tail of the steel coil is determined based on a second method; If the second position is within the preset position range, the roll gap of the winding aid roller of the coiler is opened to the quick-open position, the mandrel support of the coiler is controlled to open, and after a delay of the target coil holding time, the mandrel diameter of the coiler is controlled to shrink to the unwinding position so that the unwinding trolley unwinds the steel coil out of the coiler. The target coiling time is determined based on the steel grade and shape of the steel coil.
2. The unwinding method according to claim 1, characterized in that, The target loading time is determined in the following way: If the steel grade is a preset steel grade, the target coiling time is determined based on the shape; If the steel grade is not a preset steel grade, the target coiling time is 0 seconds.
3. The unwinding method according to claim 2, characterized in that, Determining the target roll-up duration based on the shape includes: Based on the shape, a target diameter difference is determined for the steel coil; the target diameter difference is the maximum diameter difference of the steel coil at different angles. If the target diameter difference is less than the first preset value, the target roll-up time is 0 seconds; If the target diameter difference is greater than or equal to a first preset value, the target roll-up time is determined based on the target diameter difference.
4. The unwinding method according to claim 3, characterized in that, The step of determining the target roll-up time based on the target diameter difference includes: If the target diameter difference is equal to the first preset value, the target roll-up time is the first time. If the target diameter difference is greater than the first preset value and less than the second preset value, the target roll-up time is the second time; if the second preset value is greater than the first preset value, the second time is greater than the first time. If the target diameter difference is greater than or equal to the second preset value, the target roll-up time is the third time; the third time is greater than the second time.
5. The unwinding method according to claim 1, characterized in that, Determining the first position of the tail of the steel coil based on the first method includes: The first position is determined based on the speed of the mandrel and the target duration; the target duration is the time from the moment the hot metal detector detects the loss to the current moment.
6. The unwinding method according to claim 1, characterized in that, Determining the second position of the tail of the steel coil based on the second method includes: Acquire an image of the target steel coil; the target steel coil image is an image including the tail of the steel coil. The target steel coil image is segmented to obtain a segmented image; The second position is determined from the segmented image based on a contour lookup algorithm.
7. A winding unloading device, characterized in that, include: The first determining module is used to determine the first position of the tail of the steel coil based on the first method when the steel coil is being determined for the second tail in the coiler. The control module is used to control the steel coil to perform an unwinding and holding function in the coiler if the first position is within a preset position range and the unwinding trolley of the coiler is in a locked state. The second determining module is used to determine the second position of the tail of the steel coil based on the second method when the steel coil performs the uncoiling and holding function. The unwinding module is used to open the roll gap of the winding aid roller of the coiler to the quick-open position if the second position is within the preset position range, control the mandrel support of the coiler to the open position, and control the mandrel diameter of the coiler to retract to the unwinding position after a delay of the target coiling time, so that the unwinding trolley can unwind the steel coil out of the coiler. The target coiling time is determined based on the steel grade and shape of the steel coil.
8. 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, it implements the unloading method as described in any one of claims 1 to 6.
9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the unloading method as described in any one of claims 1 to 6.
10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the unloading method as described in any one of claims 1 to 6.