Method, device and equipment for uncoiling strip steel and medium

Abstract

The invention discloses a strip steel uncoiling method, device and equipment and a medium, and belongs to the technical field of metallurgy. The method comprises the steps that the strip head position, the strip tail position and specification parameters of the strip steel are obtained, and the specification parameters comprise at least one of the width and the thickness; target voltage of the electromagnet is determined according to the specification parameters, and the target voltage is larger than 0; if the distance between the strip head position and the set position is smaller than or equal to a preset first distance threshold value, the power supply voltage of the electromagnet is controlled to be 0, so that the electromagnet releases the strip steel; the set position is any position on the guide plate; and if the distance between the strip tail position and the set position is smaller than or equal to a preset second distance threshold value, the power supply voltage of the electromagnet is controlled to be the target voltage so that the electromagnet can attract the strip steel. According to the method, wrinkles of the belt head and the belt tail in the uncoiling process can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of metallurgical technology, and in particular to a strip steel uncoiling method, device, equipment and medium. Background Art

[0002] At present, in the cold rolling process of the metallurgical industry, the upper and lower double-channel uncoiling method is mostly adopted.

[0003] In the existing technology, after the strip is slit, the tail of the front coil is first controlled to run to the stitching machine and wait, and then the head of the rear coil is controlled to pass through the steering pinch rollers and the centering table, and then run to the stitching machine to stitch it with the tail of the front coil, so as to ensure the continuous production operation of the annealing line.

[0004] However, due to the increasing output of thin specifications on the production line, the inclination angle of the upper channel guide plate is getting larger and larger. The strip steel slides downward on the upper channel guide plate due to the action of gravity, causing wrinkles in the strip steel. Summary of the Invention

[0005] In view of the above problems, the present invention is proposed to provide a strip uncoiling method, device, equipment and medium that solve the above problems. During the uncoiling process, when the strip head passes through the guide plate, the electromagnet is controlled to lose power, so that the electromagnet loses its adsorption magnetic force and does not adsorb the strip head, thereby preventing the strip head from being wrinkled when the sleeve is lifted; when the strip tail passes through the guide plate, the electromagnet is controlled to be energized, and the power supply voltage of the electromagnet is related to the specification parameters of the strip, so that the adsorption magnetic force of the electromagnet matches the specification parameters of the strip, so that the strip tail is adsorbed and will not be wrinkled due to falling due to gravity, thereby ensuring the stable operation of the production line.

[0006] In a first aspect, the present invention provides a method for uncoiling a steel strip, which is applied to an uncoiling system, wherein the uncoiling system includes a guide plate for conveying the steel strip, and an electromagnet is arranged on the guide plate. The method includes:

[0007] During the uncoiling process of the steel strip, obtaining the leading position, tail position and specification parameters of the steel strip, wherein the specification parameters include at least one of width and thickness;

[0008] Determining a target voltage of the electromagnet according to the specification parameters, wherein the target voltage is greater than 0;

[0009] If the distance between the strip head position and the set position is less than or equal to a preset first distance threshold, the power supply voltage of the electromagnet is controlled to be 0, so that the electromagnet releases the strip; the set position is any position on the guide plate;

[0010] If the distance between the strip tail position and the set position is less than or equal to a preset second distance threshold, the power supply voltage of the electromagnet is controlled to be the target voltage so that the electromagnet absorbs the strip.

[0011] Optionally, if the specification parameter is the width, the width is positively correlated with the target voltage.

[0012] Optionally, if the specification parameter is the thickness, the thickness is negatively correlated with the target voltage.

[0013] Optionally, the specification parameter is the thickness, and determining the target voltage of the electromagnet according to the specification parameter includes:

[0014] If the thickness is less than or equal to a preset first thickness threshold, determining the target voltage of the electromagnet to be a first voltage;

[0015] If the thickness is less than a preset second thickness threshold and greater than the first thickness threshold, determining the target voltage of the electromagnet to be a second voltage;

[0016] If the thickness is greater than or equal to the second thickness threshold, determining the target voltage of the electromagnet to be a third voltage;

[0017] The first voltage is greater than the second voltage, the second voltage is greater than the third voltage, and the third voltage is greater than 0.

[0018] Optionally, after controlling the power supply voltage of the electromagnet to be the target voltage, the method further includes:

[0019] After the power supply voltage of the electromagnet reaches the target voltage and a set time has passed, the power supply voltage of the electromagnet is controlled to be 0.

[0020] Optionally, the uncoiling system further includes a driving roller, which is used to drive the strip steel to run; and obtaining the strip head position, strip tail position and specification parameters of the strip steel includes:

[0021] Obtaining the running speed, total length and running time of the strip head of the steel strip; the starting moment of the running time is the moment when the strip head enters the driving roller;

[0022] determining the uncoiled length of the steel strip according to the product of the running speed and the running time;

[0023] Determining the tape head position according to the unwound length;

[0024] The tape tail position is determined according to the unwound length and the total length.

[0025] Optionally, obtaining the running speed, total length, and time duration of the strip head leaving the driving roller includes:

[0026] Obtaining the rotation speed and radius of the driving roller;

[0027] The running speed of the steel strip is determined according to the rotation speed and the radius.

[0028] In a second aspect, the present invention provides a strip uncoiling device, which is applied to an uncoiling system. The uncoiling system includes a guide plate, the guide plate is used to transport the strip, and an electromagnet is arranged on the guide plate. The device includes:

[0029] an acquisition module, configured to acquire a leading position, a trailing position, and specification parameters of the steel strip during uncoiling, wherein the specification parameters include at least one of width and thickness;

[0030] a determination module, configured to determine a target voltage of the electromagnet according to the specification parameters, wherein the target voltage is greater than 0;

[0031] a first control module configured to control the supply voltage of the electromagnet to be 0 so that the electromagnet has no magnetic attraction force if the distance between the tape head position and a set position is less than or equal to a preset first distance threshold; the set position is any position on the guide plate;

[0032] The second control module is configured to control the supply voltage of the electromagnet to be the target voltage if the distance between the tape tail position and the set position is less than or equal to a preset second distance threshold, so that the adsorption magnetic force of the electromagnet is the target magnetic force.

[0033] In a third aspect, the present invention provides an electronic device comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method described in the first aspect by executing the computer instructions.

[0034] In a fourth aspect, the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0035] The technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0036] Embodiments of the present invention provide a strip uncoiling method, device, equipment, and medium. During the uncoiling process, the strip's leading and trailing positions and specification parameters are obtained to determine the position of the strip's leading and trailing ends. The specification parameters include at least one of width and thickness. Based on the specification parameters, a target voltage for the electromagnet is determined so that the magnetic attraction force at the target voltage corresponds to the strip's gravity, and the target voltage is greater than 0. If the distance between the strip's leading position and a set position is less than or equal to a preset first distance threshold, the electromagnet's supply voltage is controlled to 0, eliminating the electromagnet's magnetic attraction force and releasing the strip. The strip's leading end is not attracted when it travels on a guide plate, thereby preventing wrinkles at the strip's leading end. If the distance between the strip's trailing end and a set position is less than or equal to a preset second distance threshold, the electromagnet's supply voltage is controlled to the target voltage, ensuring that the electromagnet attracts the strip and the trailing end is attracted when it travels on the guide plate, thereby preventing the trailing end from slipping and causing wrinkles. This method can reduce wrinkles at the strip's leading and trailing ends during uncoiling, improve strip quality, and ensure stable production.

[0037] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0039] Figure 1 This is a structural schematic diagram of a strip steel uncoiling system provided by an embodiment of the present invention;

[0040] Figure 2 This is a flow chart of a strip steel uncoiling method provided by an embodiment of the present invention;

[0041] Figure 3 This is a structural block diagram of a strip steel uncoiling device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings. It should be understood that the embodiments of the present disclosure and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0043] Before introducing in detail a strip steel uncoiling method provided by an embodiment of the present invention, a brief introduction to the implementation environment involved in the embodiment of the present invention is first given.

[0044] Figure 1 Schematic diagram of a strip uncoiling system provided by an embodiment of the present invention. Figure 1 As shown, the system includes a drive roller 1, a pressure roller 2, a guide plate 3, an electromagnet 4, a PLC processor 5, and an electromagnet control unit 6. The electromagnet is placed on the guide plate. The motor that provides driving force to the drive roller 1 is a motor with an incremental encoder. The PLC processor 5 and the electromagnet control unit 6 are in communication. The drive roller 1 is installed in front of the guide plate 3 and drives the strip. The pressure roller 2 is a non-driven roller, mainly used to press down the strip head or tail as it passes to prevent the strip from running off. The guide plate is used to transport the strip and guide its movement. The PLC processor 5 is used to receive signals from the encoder. The electromagnet control unit 6 controls whether the electromagnet is energized or de-energized. When energized, the electromagnet has an attractive magnetic force that can attract the strip. The electromagnet 4 is used to attract the strip.

[0045] Figure 2 This is a flow chart of a strip uncoiling method provided by an embodiment of the present invention, such as Figure 2 As shown, the method includes:

[0046] Step S210: Obtain the strip head position, strip tail position and specification parameters of the strip.

[0047] The specification parameters include at least one of width and thickness.

[0048] In the embodiment of the present application, during the uncoiling process, the strip begins to move from the drive roller and along the guide plate toward the stitching machine. After the tail of the leading strip reaches the stitching machine, it waits for the leading strip of the trailing strip to reach the stitching machine for stitching. Therefore, during the uncoiling process, the leading and trailing positions of the strip must be captured in real time. Strips of different specifications and parameters experience different gravitational forces on the guide plate, resulting in different degrees of downward sliding. Therefore, the strip's specifications must also be captured.

[0049] Step S220: Determine the target voltage of the electromagnet according to the specification parameters, and the target voltage is greater than 0.

[0050] In the embodiments of the present application, the magnetic attraction force of the electromagnet holds the steel strip in place, preventing it from falling due to gravity on the guide plate and causing wrinkles. However, different steel strip specifications will experience different gravitational forces on the guide plate, requiring different magnetic attraction forces. The magnetic attraction force of the electromagnet is directly proportional to its supply voltage: the higher the supply voltage, the stronger the magnetic attraction force. Therefore, the target voltage of the electromagnet is determined based on the specification parameters to determine the target magnetic attraction force required for the steel strip.

[0051] In the embodiment of the present application, the electromagnet control unit 6 includes a rectifier and a contactor. The rectifier is used to adjust the supply voltage of the electromagnet, thereby adjusting the adsorption magnetic force of the electromagnet, and the contactor is used to control the power supply or power loss of the electromagnet.

[0052] Step S230: If the distance between the strip head position and the set position is less than or equal to a preset first distance threshold, the power supply voltage of the electromagnet is controlled to be 0, so that the electromagnet releases the strip.

[0053] The set position is any position on the guide plate.

[0054] In an embodiment of the present application, if the distance between the tape head position and the set position is less than or equal to a preset first distance threshold, it indicates that the tape head is running on the guide plate. If at this time, the electromagnet is controlled to adsorb the tape head, the tape head will be lifted and wrinkles will be generated. Therefore, in order to prevent wrinkles from occurring in the tape head, a power-off control instruction is sent to the electromagnet control unit through the PLC processor, so that the electromagnet control unit controls the electromagnet to lose power according to the received power-off control instruction, that is, the power supply voltage is 0, so that the electromagnet has no adsorption magnetic force and cannot adsorb the tape head, thereby preventing the tape head from being wrinkled due to lifting.

[0055] Step S240: If the distance between the strip tail position and the set position is less than or equal to a preset second distance threshold, the supply voltage of the electromagnet is controlled to be the target voltage so that the electromagnet attracts the strip.

[0056] In an embodiment of the present application, if the distance between the tail position of the belt and the set position is less than or equal to a preset second distance threshold, it means that the tail of the belt has run onto the guide plate. At this time, a power-on control instruction is sent to the electromagnet control unit through the PLC processor, so that the electromagnet control unit controls the power supply voltage of the electromagnet to a non-zero target voltage according to the received power-on control instruction, so that the electromagnet is energized. The electromagnet attracts the tail of the belt through the target adsorption magnetic force corresponding to the target voltage, preventing the tail of the belt from wrinkling due to gravity falling, thereby improving the quality of the strip and ensuring stable production.

[0057] Among them, if wrinkles occur in the strip, it is necessary to manually cut the wrinkled parts and then sew them again, which adds a lot of manual work. Therefore, the method of the embodiment of the present invention can also reduce manual participation in the unwinding process and improve production efficiency.

[0058] In the embodiment of the present application, the set position may be the location of the electromagnet. Thus, the first distance threshold may be the distance from the drive roller to the electromagnet, and the second distance threshold may also be the distance from the drive roller to the electromagnet. The second distance threshold and the first distance threshold may be equal or unequal, and may be set based on specific circumstances.

[0059] Optionally, if the specification parameter is width, the width is positively correlated with the target voltage.

[0060] In the embodiment of the present application, the larger the width of the strip, the greater its mass, the greater the influence of the inclination angle of the guide plate, the easier it is to produce wrinkles, the greater the adsorption magnetic force required, and the corresponding larger the power supply voltage of the electromagnet, so the width is positively correlated with the target voltage, and the larger the width, the larger the target voltage.

[0061] Optionally, if the specification parameter is thickness, the thickness is negatively correlated with the target voltage.

[0062] In the present embodiment, the thinner the strip, the lower its yield strength, the more likely it is to wrinkle, the greater the required magnetic attraction force, and the corresponding higher the supply voltage of the electromagnet. Therefore, thickness and target voltage are negatively correlated: the thinner the strip, the higher the target voltage.

[0063] Optionally, the specification parameter is thickness, and step S120 includes:

[0064] If the thickness is less than or equal to a preset first thickness threshold, the target voltage of the electromagnet is determined to be the first voltage; if the thickness is less than a preset second thickness threshold and greater than the first thickness threshold, the target voltage of the electromagnet is determined to be the second voltage; if the thickness is greater than or equal to the second thickness threshold, the target voltage of the electromagnet is determined to be the third voltage.

[0065] The first voltage is greater than the second voltage, the second voltage is greater than the third voltage, and the third voltage is greater than 0.

[0066] In this embodiment, the thickness of the strip steel can be divided into three ranges. Different ranges correspond to different target voltages. The larger the middle value of the range, the smaller the corresponding target voltage.

[0067] Specifically, if the thickness is less than or equal to a preset first thickness threshold, indicating that the steel strip is thin, the target voltage of the electromagnet is determined to be a higher first voltage. If the thickness is less than a preset second thickness threshold but greater than the first thickness threshold, indicating that the steel strip is medium, the target voltage of the electromagnet is determined to be a second voltage of intermediate value. If the thickness is greater than or equal to the second thickness threshold, indicating that the steel strip is thick, the target voltage of the electromagnet is determined to be a lower third voltage. Using this method to determine the target voltage of the electromagnet can reduce the occurrence of wrinkles.

[0068] The first voltage, the second voltage, and the third voltage can be determined according to the rated voltage of the electromagnet. For example, if the rated voltage is 180V, the first voltage is 180V, the second voltage is 140V, and the third voltage is 80V.

[0069] Optionally, after controlling the supply voltage of the electromagnet to be the target voltage, the method further includes:

[0070] After the power supply voltage of the electromagnet reaches the target voltage, the power supply voltage of the electromagnet is controlled to be 0 after the set time has passed.

[0071] The set time can be determined according to the length of the guide plate. The longer the guide plate is, the longer the set time can be. For example, the set time can be greater than or equal to the ratio of the length of the guide plate to the running speed of the strip.

[0072] In the embodiment of the present application, the duration of power supply to the electromagnet can also be controlled. When the power supply to the electromagnet reaches a set duration, the electromagnet is controlled to be powered off. It can be understood that the electromagnet is controlled to be powered from the moment the tape tail runs onto the guide plate until it leaves the guide plate. When the power supply to the electromagnet reaches the set duration, it indicates that the tape tail has left the guide plate and the magnetic attraction is no longer required. The electromagnet can be controlled to be powered off to save energy.

[0073] Optionally, obtaining the strip head position, strip tail position and specification parameters includes the first to fourth steps.

[0074] The first step is to obtain the running speed, total length and running time of the strip head; the starting moment of the running time is the moment when the strip head enters the driving roller.

[0075] The end time of the running time is the current time.

[0076] In an embodiment of the present application, a first encoder may be arranged at the drive roller to detect whether the tape head has entered the drive roller. For example, when the first encoder senses a signal, it indicates that the tape head has begun to enter the drive roller, and the moment of entry is determined as the start time of the running time.

[0077] Optionally, the first step includes:

[0078] Obtain the speed and radius of the driving roller; determine the running speed of the strip according to the speed and radius.

[0079] In an embodiment of the present application, the rotational speed of the motor can be detected by a second encoder, the rotational speed of the drive roller can be determined based on the rotational speed of the motor, the circumference of the drive roller can be determined based on the radius of the drive roller, and the running speed of the strip can be obtained based on the product of the rotational speed and the circumference of the drive roller.

[0080] The second step is to determine the uncoiled length of the strip according to the product of the running speed and the duration.

[0081] In the embodiment of the present application, the product of the strip running speed and the time length is the length of the strip head away from the driving roller, which is recorded as the uncoiled length.

[0082] Step 3: Determine the lead position based on the unrolled length.

[0083] In the embodiments of the present application, when the unwound length is less than the guide plate length, the position of the tape head can be determined based on the position of the drive roller and the unwound length. When the unwound length is greater than or equal to the guide plate length, the tape head is about to or has already reached the sewing machine. For example, if the guide plate is positioned immediately adjacent to the drive roller, the position of the drive roller, shifted forward of the guide plate by the unwound length, represents the tape head position.

[0084] Step 4: Determine the tape tail position based on the unwound length and total length.

[0085] In the embodiment of the present application, when the difference between the total length and the uncoiled length is greater than the length of the guide plate, the strip tail has not yet reached the guide plate. When the difference between the total length and the uncoiled length is less than or equal to the length of the guide plate, the strip tail has reached the guide plate. At this point, the position of the strip tail is determined based on the position of the drive roller and the difference between the guide plate length and the difference. For example, if the guide plate is positioned immediately adjacent to the drive roller, the strip tail position is determined by the drive roller being positioned forward of the guide plate by the difference between the guide plate length and the difference.

[0086] Based on the same inventive concept, an embodiment of the present invention further provides a strip unwinding device, which is applied to an unwinding system. The unwinding system includes a guide plate, which is used to transport the strip, and an electromagnet is arranged on the guide plate. Figure 3 This is a structural block diagram of a strip unwinding device provided by an embodiment of the present invention, such as Figure 3 As shown, the apparatus 300 includes an acquisition module 301 , a determination module 302 , a first control module 303 and a second control module 304 .

[0087] An acquisition module 301 is used to acquire the strip head position, strip tail position and specification parameters of the strip during the strip uncoiling process, wherein the specification parameters include at least one of width and thickness;

[0088] A determination module 302 is used to determine a target voltage of the electromagnet according to the specification parameters, where the target voltage is greater than 0;

[0089] The first control module 303 is configured to control the supply voltage of the electromagnet to be 0 if the distance between the strip head position and the set position is less than or equal to a preset first distance threshold, so that the electromagnet releases the strip; the set position is any position on the guide plate;

[0090] The second control module 304 is configured to control the supply voltage of the electromagnet to be a target voltage if the distance between the strip tail position and the set position is less than or equal to a preset second distance threshold, so that the electromagnet attracts the strip.

[0091] Optionally, if the specification parameter is width, the width is positively correlated with the target voltage.

[0092] Optionally, if the specification parameter is thickness, the thickness is negatively correlated with the target voltage.

[0093] Optionally, the specification parameter is thickness, and the determination module 302 is further configured to:

[0094] If the thickness is less than or equal to a preset first thickness threshold, determining the target voltage of the electromagnet to be a first voltage;

[0095] If the thickness is less than a preset second thickness threshold and greater than the first thickness threshold, determining the target voltage of the electromagnet to be a second voltage;

[0096] If the thickness is greater than or equal to the second thickness threshold, determining the target voltage of the electromagnet to be a third voltage;

[0097] The first voltage is greater than the second voltage, the second voltage is greater than the third voltage, and the third voltage is greater than 0.

[0098] Optionally, the apparatus 300 further includes a third control module, configured to:

[0099] When the power supply voltage of the electromagnet reaches the target voltage, the timing starts;

[0100] After the power supply voltage of the electromagnet reaches the target voltage, the power supply voltage of the electromagnet is controlled to be 0 after the set time has passed.

[0101] Optionally, the uncoiling system further includes a driving roller, which is used to drive the strip steel to run; the acquisition module 301 includes:

[0102] An acquisition unit is used to acquire the running speed, total length and running time of the strip head; the starting moment of the running time is the moment when the strip head enters the driving roller;

[0103] a first determining unit, configured to determine the uncoiled length of the steel strip according to the product of the running speed and the running time;

[0104] A second determining unit is used to determine the tape head position according to the unwound length;

[0105] The third determining unit is used to determine the tape tail position according to the unwound length and the total length.

[0106] Optionally, the acquisition unit is further configured to:

[0107] Get the speed and radius of the driving roller;

[0108] The running speed of the strip is determined according to the rotation speed and radius.

[0109] It can be understood that the device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0110] An embodiment of the present invention further provides an electronic device, which may include a processor and a memory, wherein the processor and the memory may be communicatively connected to each other via a bus or other means.

[0111] The processor may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application, or may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components and other chips, or a combination of the above types of chips.

[0112] The memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory may include removable or non-removable (or fixed) media. Where appropriate, the memory may be internal or external to the electronic device. In certain embodiments, the memory may be a non-volatile solid-state memory.

[0113] In one embodiment, the memory may be a read-only memory (ROM). In one embodiment, the ROM may be a mask-programmable ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0114] The processor implements any one of the strip uncoiling methods in the above embodiments by reading and executing computer program instructions stored in the memory.

[0115] In one example, the electronic device may further include a communication interface and a bus. The processor, memory, and communication interface are connected via the bus and communicate with each other. The communication interface is primarily used to enable communication between the various modules, devices, units, and / or devices in the embodiments of this application. Where appropriate, the bus may include one or more buses.

[0116] In addition, in conjunction with the strip uncoiling method in the above-mentioned embodiment, embodiments of the present invention may provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any of the strip uncoiling methods in the above-mentioned embodiment is implemented.

[0117] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD). The storage medium can also include a combination of the above-mentioned types of memory.

[0118] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0119] Embodiments of the present invention provide a strip uncoiling method, device, equipment, and medium. During the uncoiling process, the strip's leading and trailing positions and specification parameters are obtained to determine the position of the strip's leading and trailing ends. The specification parameters include at least one of width and thickness. Based on the specification parameters, a target voltage for the electromagnet is determined so that the magnetic attraction force at the target voltage corresponds to the strip's gravity, and the target voltage is greater than 0. If the distance between the strip's leading position and a set position is less than or equal to a preset first distance threshold, the electromagnet's supply voltage is controlled to 0, eliminating the electromagnet's magnetic attraction force and releasing the strip. The strip's leading end is not attracted when it travels on a guide plate, thereby preventing wrinkles at the strip's leading end. If the distance between the strip's trailing end and a set position is less than or equal to a preset second distance threshold, the electromagnet's supply voltage is controlled to the target voltage, ensuring that the electromagnet attracts the strip and the trailing end is attracted when it travels on the guide plate, thereby preventing the trailing end from slipping and causing wrinkles. This method can reduce wrinkles at the strip's leading and trailing ends during uncoiling, improve strip quality, and ensure stable production.

[0120] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0121] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Accordingly, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the invention.

[0122] It should be noted that the above embodiments illustrate rather than limit the invention, and that a person skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The present invention may be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

Claims

1. A method for uncoiling a steel strip, characterized in that: Applied to an uncoiling system, the uncoiling system includes a guide plate for conveying the strip steel, an electromagnet being arranged on the guide plate, and the method includes: Obtaining a leading position, a trailing position, and specification parameters of the steel strip, wherein the specification parameters include at least one of width and thickness; Determining a target voltage of the electromagnet according to the specification parameters, wherein the target voltage is greater than 0; If the distance between the strip head position and the set position is less than or equal to a preset first distance threshold, the power supply voltage of the electromagnet is controlled to be 0, so that the electromagnet releases the strip; the set position is any position on the guide plate; If the distance between the strip tail position and the set position is less than or equal to a preset second distance threshold, the power supply voltage of the electromagnet is controlled to be the target voltage so that the electromagnet absorbs the strip.

2. The method for uncoiling a steel strip according to claim 1, characterized in that: If the specification parameter is the width, the width is positively correlated with the target voltage.

3. The strip uncoiling method according to claim 1, characterized in that: If the specification parameter is the thickness, the thickness is negatively correlated with the target voltage.

4. The strip uncoiling method according to claim 1, characterized in that: The specification parameter is the thickness, and determining the target voltage of the electromagnet according to the specification parameter includes: If the thickness is less than or equal to a preset first thickness threshold, determining the target voltage of the electromagnet to be a first voltage; If the thickness is less than a preset second thickness threshold and greater than the first thickness threshold, determining the target voltage of the electromagnet to be a second voltage; If the thickness is greater than or equal to the second thickness threshold, determining the target voltage of the electromagnet to be a third voltage; The first voltage is greater than the second voltage, the second voltage is greater than the third voltage, and the third voltage is greater than 0.

5. The strip uncoiling method according to claim 1, characterized in that: After controlling the supply voltage of the electromagnet to be the target voltage, the method further includes: After the power supply voltage of the electromagnet reaches the target voltage and a set time has passed, the power supply voltage of the electromagnet is controlled to be 0.

6. The method for uncoiling a steel strip according to claim 1, characterized in that: The unwinding system further includes a driving roller, which is used to drive the strip steel to run; the step of obtaining the strip head position, strip tail position and specification parameters of the strip steel includes: Obtaining the running speed, total length and running time of the strip head of the steel strip; the starting moment of the running time is the moment when the strip head enters the driving roller; determining the uncoiled length of the steel strip according to the product of the running speed and the running time; Determining the tape head position according to the unwound length; The tape tail position is determined according to the unwound length and the total length.

7. The method for uncoiling a steel strip according to claim 6, characterized in that: The step of obtaining the running speed, total length, and time duration of the strip head leaving the driving roller includes: Obtaining the rotation speed and radius of the driving roller; The running speed of the steel strip is determined according to the rotation speed and the radius.

8. A strip steel unwinding device, characterized in that: Applicable to an uncoiling system, the uncoiling system includes a guide plate for conveying the strip steel, an electromagnet is arranged on the guide plate, and the device includes: an acquisition module, configured to acquire a leading position, a trailing position, and specification parameters of the steel strip during uncoiling, wherein the specification parameters include at least one of width and thickness; a determination module, configured to determine a target voltage of the electromagnet according to the specification parameters, wherein the target voltage is greater than 0; a first control module, configured to control the supply voltage of the electromagnet to be 0 so that the electromagnet releases the strip if the distance between the strip head position and a set position is less than or equal to a preset first distance threshold, wherein the set position is any position on the guide plate; The second control module is used to control the power supply voltage of the electromagnet to be the target voltage if the distance between the strip tail position and the set position is less than or equal to a preset second distance threshold, so that the electromagnet absorbs the strip.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method according to any one of claims 1 to 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method according to any one of claims 1 to 7.

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