Rolling material winding control method and winding device

Abstract

A rolling material (104) winding control method, comprising: determining a target tension control mode from at least two tension control modes on the basis of the current winding diameter of a winding apparatus (41, 103), the at least two tension control modes including a linear tension control mode and a nonlinear tension control mode; according to the target tension control mode, and on the basis of the current winding diameter, determining external tension corresponding to the current winding diameter; and on the basis of the external tension, controlling a first driving apparatus (43) to drive the winding apparatus (41, 103) to wind a layer of rolling material (104). The control method solves the problems in the related art that wrinkle and a 'barreling' phenomenon occur to the rolling material (104) due to the linear tension, as a result, the rolling material is not aligned, the waste of rolling materials is caused, and the reliability of product is reduced. Also provided is a winding device (40) using the control method.

Description

Coil winding control method and winding equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on the Chinese patent application with application number 202311151018.7, application date September 7, 2023, and invention name “Control method for coil winding and winding equipment”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into the present disclosure as a reference. Technical Field

[0003] The present disclosure relates to, but is not limited to, the field of battery cell winding technology, and in particular to a coil winding control method and a winding device. Background Art

[0004] In the related art, in the process of winding the coil (for example, the pole piece), linear tension (for example, constant tension, linear variable tension, etc.) is basically adopted. In this way, as the coil diameter increases, the pressure on the center part of the coil becomes greater and greater, and the coil is prone to wrinkles, barrel phenomenon, uneven winding, etc., which not only causes a large amount of coil waste, but also reduces the reliability of the product.

[0005] Summary of the Invention

[0006] The embodiments of the present disclosure provide a method for controlling coil winding and a winding device.

[0007] The technical solution of the embodiment of the present disclosure is implemented as follows:

[0008] The present disclosure provides a method for controlling coil winding, which is applied to a winding device. The winding device includes a winding device, a control device, and a first driving device. The control method includes:

[0009] Based on the current winding diameter of the winding device, determining a target tension control mode from at least two tension control modes; wherein the at least two tension control modes include a linear tension control mode and a nonlinear tension control mode;

[0010] Determining the external tension corresponding to the current winding diameter based on the current winding diameter according to the target tension control method;

[0011] Based on the external tension, the first driving device is controlled to drive the winding device to wind up a layer of coiled material.

[0012] An embodiment of the present disclosure provides a winding device, comprising a winding device, a control device, and a first driving device, wherein:

[0013] The first driving device is used to drive the winding device to wind the coiled material;

[0014] The control device is used to determine a target tension control mode from at least two tension control modes based on the current winding diameter of the winding device, and the at least two tension control modes include a linear tension control mode and a nonlinear tension control mode; according to the target tension control mode, based on the current winding diameter, determine the external tension corresponding to the current winding diameter; based on the external tension, control the first drive device to drive the winding device to wind a layer of coiled material.

[0015] In an embodiment of the present disclosure, a target tension control mode is determined from at least two tension control modes based on the current winding diameter of the winding device; wherein the at least two tension control modes include a linear tension control mode and a nonlinear tension control mode; according to the target tension control mode, an external tension corresponding to the current winding diameter is determined based on the current winding diameter; and based on the external tension, the first drive device is controlled to drive the winding device to wind a layer of coiled material. In this way, on the one hand, different tension control modes are used for different winding diameters, which improves the accuracy of tension and thus the quality of winding compared to a single control mode; on the other hand, the external tension of winding is determined in real time according to the winding diameter and the corresponding tension control mode, which reduces the degree of interlayer slippage of the inner layer of coiled material compared to using constant tension or linear tension, thereby reducing the possibility of barrel phenomenon and uneven winding, thereby improving winding efficiency while saving costs and improving product reliability.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated into and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and, together with the specification, are used to explain the technical solutions of the present disclosure.

[0018] FIG1 is a schematic diagram of the structure of a winding device provided by an embodiment of the present disclosure;

[0019] FIG2 is a schematic diagram of a first implementation flow of a method for controlling coil winding provided by an embodiment of the present disclosure;

[0020] FIG3 is a second schematic diagram of an implementation flow of a coil winding control method provided by an embodiment of the present disclosure;

[0021] FIG4 is a third schematic diagram of an implementation flow of a coil winding control method provided by an embodiment of the present disclosure;

[0022] FIG5 is a schematic diagram 1 of a coil diameter and corresponding external tension provided by an embodiment of the present disclosure;

[0023] FIG6 is a second schematic diagram of a coil diameter and corresponding external tension provided by an embodiment of the present disclosure;

[0024] FIG7 is a second schematic diagram of the structure of a winding device provided in an embodiment of the present disclosure;

[0025] FIG8 is a third schematic diagram of the structure of a winding device provided by an embodiment of the present disclosure;

[0026] FIG9 is a fourth schematic diagram of the structure of a winding device provided in an embodiment of the present disclosure;

[0027] FIG10 is a schematic diagram of a hardware entity of a computer device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limiting the present disclosure. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0029] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0030] In the following description, the terms "first\second\third" are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It is understandable that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described herein.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art in the art of the present disclosure. The terms used herein are only for the purpose of describing the embodiments of the present disclosure and are not intended to limit the present disclosure.

[0032] In related technologies, power batteries are widely used in a variety of fields, including energy storage systems, electric vehicles, military equipment, and aerospace. Power batteries consist of battery cells. Electrode sheets are the primary component of a single cell and directly determine the battery's electrochemical performance and safety. Electrode sheets consist of a metal current collector and a coating uniformly applied to the metal current collector. During the manufacturing process, electrode sheets are delivered in rolls for coating, rolling, and slitting.

[0033] Currently, production equipment for pre-cell processes (e.g., coating equipment and cold pressing equipment) all utilize a roll-to-roll unwinding and rewinding structure. During the rewinding process, linear tension (e.g., constant tension, linear variable tension, etc.) is typically used. As the roll diameter increases, the pressure on the center of the rewind increases, making it prone to wrinkling, barreling, and uneven winding. This not only results in significant material waste but also reduces product reliability.

[0034] The present disclosure provides a coil winding control method. Different tension control methods are used for different coil diameters, improving tension accuracy and thus coiling quality compared to a single control method. Furthermore, the external tension of the coil is determined in real time based on the coil diameter and the corresponding tension control method. Compared to using constant tension or linear tension, this reduces interlayer slippage in the inner coil, thereby reducing the possibility of barreling and uneven winding. This improves winding efficiency while also saving costs and enhancing product reliability. The method provided by the present disclosure can be executed by a computer device, which can be a laptop, tablet, desktop computer, or winding equipment. The winding equipment can be any suitable type of coil winding equipment for any suitable scenario. For example, in the battery manufacturing field, the winding equipment can be used for coating, rolling, and slitting processes. Alternatively, the winding equipment can be used in non-battery manufacturing fields. In some embodiments, the winding equipment also includes a programmable logic controller (PLC).

[0035] Below, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the drawings in the embodiments of the present disclosure.

[0036] In order to better understand the method provided by the embodiment of the present disclosure, the winding device in the deployment scenario of winding the coiled material is described below.

[0037] FIG1 is a schematic diagram of the first structure of a winding device provided by an embodiment of the present disclosure. As shown in FIG1 , the winding device includes an unwinding device 101, a traction device 102, and a rewinding device 103. A coil 104 is unwound from the unwinding device 101 and conveyed to the rewinding device 103 under the traction of the traction device 102. During the process of rewinding the coil 104 by the rewinding device 103, tension is applied to the coil 104 so that the coil 104 is rewound into the rewinding device 103. In some embodiments, the winding device may further include corresponding devices or equipment for performing coating, rolling, or slitting processes on the coil 104 during the conveying process.

[0038] FIG2 is a schematic diagram of a first implementation flow of a coil winding control method provided by an embodiment of the present disclosure, which is applied to a winding device. The winding device includes a winding device, a control device, and a first driving device. As shown in FIG2 , the control method includes steps S11 to S13, wherein:

[0039] Step S11: determining a target tension control mode from at least two tension control modes based on the current winding diameter of the winding device; wherein the at least two tension control modes include a linear tension control mode and a nonlinear tension control mode.

[0040] Here, the coiled material may be any suitable strip material, for example, a pole piece (i.e., a positive pole piece, a negative pole piece), a steel sheet, an adhesive tape, a cloth tape, a paper tape, etc.

[0041] The winding device may be any suitable device capable of winding the coil. In some embodiments, the winding device may include but is not limited to a winding shaft, a barrel, etc. The winding shaft may be any suitable shaft capable of winding the coil. For example, a seamless steel pipe, an inflatable shaft, etc. The barrel is located on the winding shaft and is used to wind the coil. For example, the winding device may include a winding shaft, through which the coil is wound. During implementation, the winding shaft has an initial winding diameter, which refers to the radius of the package when the winding shaft is not winding the coil. For another example, the winding device may include an inflatable shaft and a barrel located on the inflatable shaft. During implementation, the inflatable shaft is first deflated to load the barrel onto the inflatable shaft, and then the inflatable shaft is inflated so that the barrel can be fixed on the inflatable shaft. The initial winding diameter may refer to the radius of the package when the barrel is not winding the coil.

[0042] The control device may be any suitable device capable of realizing the control function, such as a PLC, a single chip microcomputer, etc.

[0043] The current winding diameter refers to the current winding diameter of the winding device, that is, the radius of the coil after winding the nth layer of coil, where n is a positive integer. The winding diameter can be determined in any suitable manner.

[0044] For example, the winding device or the coiled material can be detected in real time using any suitable sensor, and the detected value obtained can be used to determine the current winding diameter. For example, the detected value can be used as the current winding diameter. In another example, the sum of the detected value and the thickness of the coiled material can be used as the current winding diameter.

[0045] For another example, in the absence of deformation, the current winding diameter can be determined based on the initial winding diameter, the number of winding layers, and the thickness of the coil, wherein different coils may correspond to the same or different thicknesses. In some embodiments, the current winding diameter R can be obtained by the following formula (1-1): i , that is: R i =R0+i×h (1-1);

[0046] Among them, R0 is the initial winding diameter, i is the number of winding layers, and h is the thickness of the coil.

[0047] Tension control methods may include, but are not limited to, linear tension control methods and nonlinear tension control methods. Linear tension control methods may include, but are not limited to, constant tension control methods and linear variable tension control methods (e.g., linear functions, direct proportional functions, etc.). Nonlinear tension control methods may include, but are not limited to, curve tension control methods such as quadratic functions, inverse proportional functions, exponential functions, power functions, and broken lines.

[0048] In some embodiments, different winding diameters can correspond to the same or different tension control methods. During implementation, a correspondence between tension control methods and winding diameter segments can be pre-established. This correspondence can then be used to determine the target tension control method that matches the current winding diameter. In some embodiments, for the same winding diameter or winding diameter segment, different coils can correspond to the same or different tension control methods. The winding diameter segment represents the range of the winding diameter, with different winding diameter segments corresponding to different ranges. For example, the winding diameter segment is [R1, R2], which indicates that the winding diameter range corresponding to this winding diameter segment is no less than R1 and no greater than R2.

[0049] For example, the correspondence may include:

[0050] (1) For coil 1, when the winding diameter is in the first winding diameter section (i.e., not greater than R1), the first linear tension control mode is used; when the winding diameter is in the second winding diameter section (i.e., greater than R1 and not less than R2), the first curved tension control mode is used; when the winding diameter is in the third winding diameter section (i.e., greater than R2), the second linear tension control mode is used.

[0051] (2) For coil 2, when the winding diameter is in the first winding diameter section (i.e., not greater than R1), it corresponds to the first linear tension control mode; when the winding diameter is in the second winding diameter section (i.e., greater than R1 and not less than R2), it corresponds to the third linear tension control mode; when the winding diameter is in the fourth winding diameter section (i.e., greater than R2 and not less than R3), it corresponds to the second curved tension control mode; when the winding diameter is in the third winding diameter section (i.e., greater than R3), it corresponds to the second linear tension control mode.

[0052] Based on this correspondence, the target tension control method corresponding to the current winding diameter can be obtained. For example, when the winding diameter R of the coil 1 is in the second diameter segment, the first curve tension control method is used as the target tension control method. During implementation, those skilled in the art can independently set the correspondence between the tension control method and the winding diameter based on actual needs, and this embodiment of the disclosure is not limited to this.

[0053] In some embodiments, the correspondence may be defined or updated through configuration files, configuration options, user operations, and the like. For example, the correspondence may be defined through configuration options in a configuration interface. In another example, the correspondence may be determined based on attribute information of the user operation, where the attribute information may include, but is not limited to, type, distance, speed, location, duration, number of times, and the like. For example, the correspondence may be determined based on the type of operation, i.e., different types correspond to different correspondences. In another example, the correspondence may be determined based on the force and / or duration of the operation, i.e., different forces and / or durations correspond to different correspondences.

[0054] Step S12: determining the external tension corresponding to the current winding diameter based on the current winding diameter according to the target tension control method.

[0055] Here, external tension refers to the external tension applied to the unit width of the coil when winding the current layer of coil. During implementation, the corresponding external tension is calculated in real time based on the current winding diameter. This external tension is used to wind a layer of coil onto the winding device.

[0056] For example, according to the first mapping relationship corresponding to the target tension control mode, a target external tension that matches the current winding diameter is determined from multiple external tensions, and based on the target external tension, the external tension corresponding to the current winding diameter is determined. The first mapping relationship represents the mapping relationship between at least one external tension and the corresponding winding diameter. During implementation, the first mapping relationship can be a mapping table, an array, a key-value pair, etc. In some embodiments, due to the influence of factors such as the environment and equipment, the current winding diameter actually detected is not necessarily the ideal winding diameter (i.e., the winding diameter calculated according to the above formula 1-1). Therefore, the number of target external tensions can be at least one. Then, the external tension corresponding to the current winding diameter can be a certain target external tension, a weighted / logarithmic / exponential value of a certain target external tension, or the mean / mean square error / variance of multiple target external tensions. For example, if the current winding diameter is 105 millimeters (mm), one target external tension corresponds to a winding diameter of 100 mm, and another target external tension corresponds to a winding diameter of 110 mm, then the average of these two target external tensions is used as the external tension corresponding to the current winding diameter. This pre-stored storage of multiple external tensions and their corresponding winding diameters shortens the time required to determine the external tension corresponding to the current winding diameter, improving system response speed.

[0057] For another example, external tension is calculated in real time based on the current winding diameter using a second mapping relationship corresponding to the target tension control mode. This second mapping relationship represents the relationship between external tension and winding diameter. Compared to storing multiple external tensions and corresponding winding diameters, this reduces data storage requirements and alleviates storage pressure on the device. Furthermore, it can correct for errors caused by environmental and equipment factors, resulting in more accurate external tension calculations.

[0058] Step S13: Based on the external tension, control the first driving device to drive the winding device to wind up a layer of coiled material.

[0059] Here, the first drive device can be any suitable device capable of driving the winding device to rewind the coiled material, such as a motor. During implementation, the operating parameters of the first drive device (e.g., speed, power, torque, voltage, etc.) are adjusted according to the external tension. The first drive device operates according to the adjusted operating parameters to drive the winding device to rotate and rewind the coiled material onto the winding device.

[0060] In an embodiment of the present disclosure, a target tension control mode is determined from at least two tension control modes based on the current winding diameter of the winding device; wherein the at least two tension control modes include a linear tension control mode and a nonlinear tension control mode; according to the target tension control mode, an external tension corresponding to the current winding diameter is determined based on the current winding diameter; and based on the external tension, the first drive device is controlled to drive the winding device to wind a layer of coiled material. In this way, on the one hand, different tension control modes are used for different winding diameters, which improves the accuracy of tension and thus the quality of winding compared to a single control mode; on the other hand, the external tension of winding is determined in real time according to the winding diameter and the corresponding tension control mode, which reduces the degree of interlayer slippage of the inner layer of coiled material compared to using constant tension or linear tension, thereby reducing the possibility of barrel phenomenon and uneven winding, thereby improving winding efficiency while saving costs and improving product reliability.

[0061] In some embodiments, the control method further includes steps S14 to S15, wherein:

[0062] Step S14: Determine a target segmentation strategy from at least one segmentation strategy based on the property information of the coiled material.

[0063] Here, the coil attribute information can be any suitable attribute. For example, material, thickness, process, etc. The partitioning strategy may include, but is not limited to, the partitioning method, partitioning interval, partitioning length, and number of partitions. The partitioning method may include, but is not limited to, random partitioning, uniform partitioning, and non-uniform partitioning. The partitioning interval can be any suitable interval, such as 50mm, 100mm, etc. The partitioning length can be any suitable length, such as 40mm, 10mm, etc. The number of partitions refers to the number of divided coil diameter segments, which can be any suitable number, such as 3, 4, 8, etc. During implementation, different partitioning strategies may correspond to different partitioning methods and / or partitioning intervals.

[0064] In some embodiments, a correspondence between the coil's attribute information and the partitioning strategy can be pre-established. During implementation, based on this correspondence, a target partitioning strategy matching the coil's attribute information can be obtained. During implementation, those skilled in the art can independently set the correspondence between the attribute information and the partitioning strategy based on actual needs, and this disclosure is not limited thereto.

[0065] Step S15: Divide the total coil diameter of the coil into at least two coil diameter segments according to the target division strategy.

[0066] Here, the total coil diameters of different coils can be the same or different. In practice, the total coil diameter of the coil represents the coiling radius of a coil.

[0067] In the disclosed embodiment, a target segmentation strategy is determined from at least one segmentation strategy based on the coil's attribute information; and according to the target segmentation strategy, the coil's total diameter is divided into at least two diameter segments. This improves the accuracy of the diameter segmentation by classifying different coils into different diameter segments based on the coil's attribute information. Furthermore, dividing the total diameter into multiple diameter segments shortens the time required to determine the tension control method corresponding to the current winding diameter, thereby improving the system's response speed.

[0068] FIG3 is a second schematic diagram of a process flow for implementing a coil winding control method provided by an embodiment of the present disclosure, which is applied to a winding device. The winding device includes a winding device, a control device, and a first driving device. As shown in FIG3 , the method includes steps S21 to S24, wherein:

[0069] Step S21 : determining a target winding diameter segment that matches the current winding diameter from at least two winding diameter segments corresponding to the coil.

[0070] Here, the number of diameter segments corresponding to different coils can be the same or different. During implementation, the total coil diameter can be pre-divided into multiple diameter segments, each corresponding to a different coil diameter range. For example, if the coil corresponds to five diameter segments, then the target diameter segment is determined from these five segments based on the current winding diameter. That is, the diameter segment to which the current winding diameter belongs is used as the target diameter segment.

[0071] Step S22: determining the target tension control mode from at least two tension control modes based on the coil and the target coil diameter segment; wherein the at least two tension control modes include a linear tension control mode and a nonlinear tension control mode.

[0072] Here, the target coil diameter segments corresponding to different coils can be the same or different. During implementation, the tension control methods can be the same or different for the same target coil diameter segment. In some embodiments, a correspondence between coil diameter segments, coils, and tension control methods can be established in advance. Then, based on this correspondence, a tension control method that matches both the coil and the target coil diameter segment can be obtained, and this tension control method can be used as the target tension control method. During implementation, those skilled in the art can independently set the correspondence between coils, coil diameter segments, and tension control methods according to actual needs, and the embodiments of the present disclosure are not limited thereto.

[0073] In some embodiments, step S22 includes step S221 and / or step S222, wherein:

[0074] Step S221 : When the target winding diameter segment is a preset winding diameter segment, the linear tension control mode is used as the target tension control mode.

[0075] Here, the preset winding diameter segment can be any suitable winding diameter segment. For example, the first winding diameter segment, the last winding diameter segment, the second winding diameter segment, an intermediate winding diameter segment, etc. There can be at least one preset winding diameter segment. In some embodiments, since the tension value decreases as the winding diameter increases, and the tension change is relatively small in the first and last winding diameter segments, the first and last winding diameter segments can each be considered a preset winding diameter segment.

[0076] In some embodiments, the lengths of the preset coil diameter segments corresponding to different coils may be the same or different.

[0077] Step S222: When the target winding diameter segment is a non-preset winding diameter segment, determine the target tension control mode from the at least two tension control modes based on the coil.

[0078] Here, for the winding diameter of the non-preset winding diameter section, different coils can adopt the same or different tension control methods. During implementation, the target tension control method can be determined based on the attribute information of the coil. The attribute information of the coil can be any suitable attribute. For example, material, thickness, process, etc. In some embodiments, a plurality of coils can be divided into different types of coils based on the attribute information of the coil, so that different types of coils can adopt the same or different tension control methods. During implementation, those skilled in the art can independently set the classification method, the number of coil types, etc. according to actual needs, and the embodiments of the present disclosure are not limited thereto.

[0079] In some embodiments, the step S222 of “determining the target tension control mode from the at least two tension control modes based on the web” includes step S2221 and / or step S2222, wherein:

[0080] Step S2221: When the coil belongs to the first type of coil, the linear tension control mode is used as the target tension control mode.

[0081] Here, the first type of coil can be any suitable type of coil, for example, a coil produced using conventional processes. In practice, the first type of coil is suitable for a linear tension control method. Using this linear tension control method to wind the first type of coil reduces the likelihood of coil wrinkles, barreling, and uneven winding.

[0082] Step S2222: When the coil belongs to the second type of coil, the nonlinear tension control mode is used as the target tension control mode; wherein the attribute information of the second type of coil is different from the attribute information of the first type of coil.

[0083] Here, the second type of coil can be any suitable type of coil. For example, coils made with unconventional processes or coils with added custom materials. In practice, these second type of coils are suitable for nonlinear tension control. Using this nonlinear tension control method to wind these second type of coils reduces the likelihood of coil wrinkles, barreling, and uneven winding.

[0084] Step S23: determining the external tension corresponding to the current winding diameter based on the current winding diameter according to the target tension control method.

[0085] Step S24: Based on the external tension, control the first driving device to drive the winding device to wind up a layer of coiled material.

[0086] Here, the aforementioned steps S23 to S24 correspond to the aforementioned steps S12 to S13 respectively. When implementing, reference may be made to the specific implementation of the aforementioned steps S12 to S13.

[0087] In the disclosed embodiment, firstly, multiple coil diameter segments corresponding to the coil are pre-stored, which shortens the time for determining the target coil diameter segment and improves the response speed of the system; secondly, multiple coil diameter segments are used for tension control, which improves the winding quality and reduces the possibility of coil wrinkles, unevenness, and barrel phenomenon; finally, the target tension control method is determined by the target coil diameter segment and coil diameter, which improves the accuracy of the target tension control method, thereby improving the accuracy of the external tension.

[0088] FIG4 is a third schematic diagram of a process flow of a coil winding control method according to an embodiment of the present disclosure, which is applied to a winding device. The winding device includes a winding device, a control device, and a first driving device. As shown in FIG4 , the method includes steps S31 to S34, wherein:

[0089] Step S31 : determining a target tension control mode from at least two tension control modes based on the current winding diameter of the winding device; wherein the at least two tension control modes include a linear tension control mode and a nonlinear tension control mode.

[0090] Here, the aforementioned step S31 corresponds to the aforementioned step S11, and during implementation, reference may be made to the specific implementation of the aforementioned step S11.

[0091] Step S32: determining a target winding diameter segment that matches the current winding diameter from at least two winding diameter segments corresponding to the coil.

[0092] Here, the aforementioned step S32 corresponds to the aforementioned step S21, and when implementing it, reference may be made to the specific implementation of the aforementioned step S21.

[0093] Step S33: determining the external tension corresponding to the current winding diameter based on the current winding diameter and the target winding diameter segment according to the target tension control mode.

[0094] Here, the target tension control mode may include, but is not limited to, a linear tension control mode, a nonlinear tension control mode, etc. Among them, the linear tension control mode may include, but is not limited to, a constant tension control mode, a linear variable tension control mode (e.g., a linear function, a proportional function, etc.). The nonlinear tension control mode may include, but is not limited to, a quadratic function, an inverse proportional function, an exponential function, a power function, a broken line, or other curved tension control mode. For example, the target tension control mode is a linear variable tension control mode or a curved tension control mode.

[0095] In some embodiments, when the target tension control mode is a linear tension control mode, the step S33 of "determining the external tension corresponding to the current winding diameter based on the current winding diameter and the target winding diameter segment" includes steps S331 to S333, wherein:

[0096] Step S331: Determine a first difference between the current winding diameter and the minimum winding diameter of the target winding diameter segment.

[0097] Here, the target winding diameter segment includes the minimum winding diameter, and different target winding diameter segments include different minimum winding diameters. In implementation, for two adjacent target winding diameter segments, the maximum winding diameter of the previous target winding diameter segment is the minimum winding diameter of the next target winding diameter segment.

[0098] In some embodiments, the first difference D1 may be determined by the following formula (3-1): D1 = (diamActVal - taperDiamStart) (3-1);

[0099] Among them, diamActVal is the current winding diameter, and taperDiamStart is the minimum winding diameter of the target winding diameter segment.

[0100] Step S332: Determine a second difference between the maximum winding diameter of the target winding diameter segment and the minimum winding diameter of the target winding diameter segment.

[0101] Here, the target winding diameter segment also includes the maximum winding diameter, and different target winding diameter segments include different maximum winding diameters. In some embodiments, the second difference D2 can be determined by the following formula (3-2), namely: D2 = (taperDiamMax - taperDiamStart) (3-2);

[0102] Among them, taperDiamMax is the maximum winding diameter of the target winding diameter segment, and taperDiamStart is the minimum winding diameter of the target winding diameter segment.

[0103] Step S333: Determine the external tension corresponding to the current winding diameter based on the first difference and the second difference.

[0104] Here, the external tension may be determined by, but is not limited to, a first ratio, a weighted value, a logarithm, or an exponential value of the first ratio. The first ratio is determined based on the first difference and the second difference. In some embodiments, the first ratio may be a ratio between the first difference and the second difference, or a difference between the first difference and the second difference, or a ratio between the first difference and the second difference.

[0105] In some embodiments, step S333 includes steps S341 to S342, wherein:

[0106] Step S341: Determine a first ratio between the first difference and the second difference.

[0107] Here, the first ratio may be the ratio between the first difference and the second difference. In some embodiments, the first ratio Ra1 may be determined by the following formula (3-3), namely:

[0108] Wherein, D1 is the first difference, and D2 is the second difference.

[0109] Step S342: Determine the external tension corresponding to the current winding diameter based on the first ratio and the taper coefficient corresponding to the coil.

[0110] Here, different coils and different coil diameters may correspond to the same or different taper coefficients. Methods for determining the external tension may include, but are not limited to, a third product of the first ratio and the taper coefficient, weighting / exponentialization / logarithmization of the third product, a fourth product of the second ratio and the first ratio, weighting / exponentialization / logarithmization of the fourth product, or the difference between the third / fourth product and a preset value. The second ratio is determined based on the taper coefficient and the first value.

[0111] In some embodiments, step S342 includes steps S3421 to S3423, wherein:

[0112] Step S3421: Determine a second ratio between the taper coefficient corresponding to the coil and a preset first value.

[0113] Here, the first value can be any suitable value, for example, 100. In practice, different coils and different coil diameter segments can correspond to the same or different first values. In some embodiments, the second ratio Ra2 can be determined by the following formula (3-4), namely:

[0114] Wherein, α1 is the first value, and taperRatio is the taper coefficient corresponding to the coil.

[0115] Step S3422: Determine a first product between the second ratio and the first ratio.

[0116] Here, the first product may be the product of the second ratio and the first ratio. In some embodiments, the first product Pr1 may be determined by the following formula (3-5), namely: Pr1 = Ra1 * Ra2 (3-5);

[0117] Here, Ra1 is the first ratio, and Ra2 is the second ratio.

[0118] Step S3423: Based on the first product, determine the external tension corresponding to the current winding diameter.

[0119] Here, the external tension may be determined by methods including, but not limited to, the first product, a weighted / exponential / logarithmic calculation of the first product, a fourth difference between the first product and a preset second value, a weighted / exponential / logarithmic calculation of the fourth difference, etc. The second value may be any suitable value, such as 1. In practice, different coils and different coil diameter segments may correspond to the same or different second values.

[0120] In some embodiments, the external tension, tensionTaper, may be determined by the following formula (3-6), namely: tensionTaper=α2-Pr1 (3-6);

[0121] Here, α2 is the first value, and Pr1 is the first product.

[0122] FIG5 is a schematic diagram of a coil diameter and corresponding external tension provided by an embodiment of the present disclosure. As shown in FIG5 , the total coil diameter of the coil is divided into four coil diameter segments, and each coil diameter segment adopts a different linear variable tension control method, namely:

[0123] The first winding diameter segment is: R is not less than Rmin and R is not greater than R1, where Rmin is the initial winding radius. The external tension corresponding to the first winding diameter segment is not less than F4 and not greater than F5. As the current winding diameter R increases from Rmin to R1, the external tension of the coil slowly decreases from F5 to F4, and the difference between F4 and F5 is not large.

[0124] The second winding diameter segment is: R is greater than R1 and R is not greater than R2. The external tension corresponding to the second winding diameter segment is not less than F3 and not greater than F4. As the current winding diameter R increases from R1 to R2, the external tension of the coil decreases rapidly from F4 to F3.

[0125] The third winding diameter segment is: R is greater than R2 and R is not greater than R3. The external tension corresponding to the third winding diameter segment is not less than F2 and not greater than F3. As the current winding diameter R increases from R2 to R3, the external tension of the coil decreases from F3 to F2.

[0126] The fourth winding diameter segment is: R is greater than R3 and R is not greater than Rmax, where Rmax is the maximum package radius (total winding diameter). The external tension corresponding to the fourth winding diameter segment is not less than F1 and not greater than F2. As the current winding diameter R increases from R3 to Rmax, the external tension of the coil slowly decreases from F2 to F1, and the difference between F2 and F1 is not large.

[0127] During implementation, the target winding section can be determined based on the current winding diameter. The taper coefficient, the maximum winding diameter of the target winding section, the minimum winding diameter of the target winding section, and the current winding diameter are substituted into the above formulas (3-1) to (3-6) to calculate the external tension corresponding to the current winding diameter. During implementation, the first and last winding diameter sections are both smaller.

[0128] In the embodiment disclosed herein, under the linear tension control method, the external tension corresponding to the current winding diameter is determined in real time through the taper coefficient, the maximum winding diameter corresponding to the target winding diameter segment, the minimum winding diameter corresponding to the target winding diameter segment, and the current winding diameter, thereby improving the accuracy of the external tension and thus improving the winding quality, and reducing the possibility of barrel phenomenon, uneven winding, and wrinkles in the coil.

[0129] In some embodiments, when the target tension control mode is a nonlinear tension control mode, the step S33 of "determining the external tension corresponding to the current winding diameter based on the current winding diameter and the target winding diameter segment" includes steps S351 to S352, wherein:

[0130] Step S351: Determine a third ratio between the minimum winding diameter of the target winding diameter segment and the current winding diameter.

[0131] Here, the third ratio is the ratio between the minimum winding diameter of the target winding diameter segment and the current winding diameter. In some embodiments, the third ratio Ra3 can be determined by the following formula (3-7), namely:

[0132] Among them, taperDiamStart is the minimum winding diameter of the target winding diameter segment, and diamActVal is the current winding diameter.

[0133] Step S352: Determine the external tension corresponding to the current winding diameter based on the third ratio.

[0134] Here, the external tension may be determined by, but is not limited to, the third ratio, a weighted / logarithmic / exponential calculation of the third ratio, a product of the third difference and the taper coefficient, a weighted / logarithmic / exponential calculation of the product, a difference between the product and the second value, a weighted / logarithmic / exponential calculation of the difference, etc. The third difference is determined based on the second value and the third ratio.

[0135] In some embodiments, step S352 includes steps S3521 to S3522, wherein:

[0136] Step S3521: Determine a third difference between the preset second value and the third ratio.

[0137] Here, the second value may be any appropriate value, for example, 1, etc. In practice, different coils and different coil diameter segments may correspond to the same or different second values.

[0138] The third difference is the difference between the second value and the third ratio. In some embodiments, the third difference D3 can be determined by the following formula (3-8), namely: D3 = α2 - Ra3 (3-8);

[0139] Wherein, α2 is the second value, and Ra3 is the third ratio.

[0140] Step S3522: Determine the external tension corresponding to the current winding diameter based on the third difference and the taper coefficient corresponding to the coil.

[0141] Here, the external tension may be determined by, but is not limited to, a fifth product of the third difference and the taper coefficient, weighting / exponentialization / logarithmization of the fifth product, weighting / exponentialization / logarithmization of the second product, a fifth difference between the second product and the second value, weighting / exponentialization / logarithmization of the fifth difference, etc. The second product is determined based on the fourth ratio and the third difference, and the fourth ratio is determined based on the taper coefficient and the first value.

[0142] In some embodiments, step S3522 includes steps S361 to S363, wherein:

[0143] Step S361: Determine a fourth ratio between the taper coefficient corresponding to the coil and a preset first value.

[0144] Here, different coils and different coil diameter segments may correspond to different or the same taper coefficients. The first value may be any suitable value, for example, 100. In practice, different coils and different coil diameter segments may correspond to the same or different first values.

[0145] The fourth ratio is the ratio between the taper coefficient and the first value. In some embodiments, the fourth ratio Ra4 can be determined by the following formula (3-9), namely:

[0146] Wherein, α1 is the first value, and taperRatio is the taper coefficient corresponding to the coil.

[0147] Step S362: Determine a second product between the fourth ratio and the third difference.

[0148] Here, the second product is the product of the fourth ratio and the third difference. In some embodiments, the second product Pr2 can be determined by the following formula (3-10), that is: Pr2 = Ra4 * D3 (3-10);

[0149] Wherein, D3 is the third difference, and Ra4 is the fourth ratio.

[0150] Step S363: Determine the external tension corresponding to the current winding diameter based on the second product.

[0151] Here, the external tension may be determined by methods including, but not limited to, the second product, weighted / exponential / logarithmic calculation of the second product, the sixth difference between the second product and the second value, and weighted / exponential / logarithmic calculation of the sixth difference. For example, the sixth difference between the second product and the second value is used as the external tension corresponding to the current winding diameter.

[0152] In some embodiments, the external tension, tensionTaper, may be determined by the following formula (3-11), namely: tensionTaper=α2-Pr2 (3-11);

[0153] Here, α2 is the second value, and Pr2 is the second product.

[0154] In the embodiment disclosed herein, under the nonlinear tension control method, the external tension corresponding to the current winding diameter is determined in real time through the taper coefficient, the minimum winding diameter corresponding to the target winding diameter segment, and the current winding diameter, thereby improving the accuracy of the external tension, thereby improving the winding quality, and reducing the possibility of barrel phenomenon, uneven winding, and wrinkles in the roll.

[0155] FIG6 is a second schematic diagram of the winding diameter and corresponding external tension of a coil provided by an embodiment of the present disclosure. As shown in FIG6 , the total winding diameter of the coil is divided into three winding diameter segments. The first and third winding diameter segments adopt different linear variable tension control methods, and the second winding diameter segment adopts a curve tension control method (i.e., an inverse proportional concave curve). During implementation, the target winding segment can be determined based on the current winding diameter, i.e.:

[0156] The first winding diameter segment is: R is not less than Rmin and R is not greater than R1, where Rmin is the initial winding radius. The external tension corresponding to the first winding diameter segment is not less than F3 and not greater than F4. As the current winding diameter R increases from Rmin to R1, the external tension of the coil slowly decreases from F4 to F3, and the difference between F4 and F3 is not large.

[0157] The second winding diameter segment is: R is greater than R1 and R is not greater than R2. The external tension corresponding to the second winding diameter segment is not less than F2 and not greater than F3. As the current winding diameter R increases from R1 to R2, the external tension of the coil decreases rapidly from F3 to F2.

[0158] The third winding diameter segment is: R is greater than R2 and R is not greater than Rmax. The external tension corresponding to the third winding diameter segment is not less than F1 and not greater than F2. As the current winding diameter R increases from R2 to Rmax, the external tension of the coil slowly decreases from F2 to F1, and the difference between F2 and F1 is not large.

[0159] During implementation, if the target winding section is the first winding diameter section or the third winding diameter section, the taper coefficient, the maximum winding diameter of the target winding section, the minimum winding diameter of the target winding section, and the current winding diameter are substituted into the above formulas (3-1) to (3-6) to calculate the external tension corresponding to the current winding diameter; if the target winding section is the second winding diameter section, the taper coefficient, the minimum winding diameter of the target winding section, and the current winding diameter are substituted into the above formulas (3-7) to (3-11) to calculate the external tension corresponding to the current winding diameter.

[0160] During implementation, the first coiling diameter section and the third coiling diameter section are both smaller.

[0161] Step S34: Based on the external tension, control the first driving device to drive the winding device to wind up a layer of coiled material.

[0162] Here, the aforementioned step S34 corresponds to the aforementioned step S13, and when implementing it, reference may be made to the specific implementation of the aforementioned step S13.

[0163] In the embodiment disclosed herein, firstly, multiple winding diameter segments corresponding to the coil are pre-stored, which shortens the time for determining the target winding diameter segment and improves the response speed of the system; secondly, multiple winding diameter segments are used for tension control, which improves the winding quality and reduces the possibility of wrinkles, unevenness, and barrel phenomenon in the coil; finally, the external tension is determined by the target winding diameter segment and the winding diameter, which improves the accuracy of the external tension, thereby improving the winding efficiency and reducing the cost.

[0164] Based on the above embodiment, the present disclosure further provides a winding device. FIG7 is a second schematic diagram of the structure of a winding device provided in the present disclosure. As shown in FIG7 , the winding device 40 includes a winding device 41, a control device 42, and a first driving device 43, wherein:

[0165] The first driving device 43 is used to drive the winding device to wind the coiled material;

[0166] The control device 42 is used to determine a target tension control mode from at least two tension control modes based on the current winding diameter of the winding device, and the at least two tension control modes include a linear tension control mode and a nonlinear tension control mode; according to the target tension control mode, based on the current winding diameter, determine the external tension corresponding to the current winding diameter; based on the external tension, control the first drive device to drive the winding device to wind a layer of coiled material.

[0167] Here, the winding device can be any suitable device capable of winding the coiled material. In some embodiments, the winding device can include but is not limited to a winding shaft, a barrel, etc.

[0168] The first driving device may be any suitable device capable of driving the winding device to wind the coiled material, such as a motor.

[0169] The control device can be any suitable device capable of implementing control functions, such as a PLC or single-chip microcomputer. During implementation, the control device determines the external tension corresponding to the current winding diameter, as described in detail in steps S11 and S12. The control device controls the first determining device to drive the winding device to wind the coil, as described in detail in step S13.

[0170] In some embodiments, the winding device further includes a measuring device; the measuring device is configured to receive a detection instruction sent by the control device and obtain a current winding diameter of the winding device.

[0171] Here, the measuring device can be any suitable device capable of obtaining the winding coil diameter, such as a sensor, a counter, etc. In practice, the current winding coil diameter can be obtained through the measuring device.

[0172] The detection instruction can be any suitable instruction. During implementation, a communication connection is pre-established between the measuring device and the control device to facilitate information transmission. The detection instruction can be triggered in various ways, including, but not limited to, manual or automatic. For example, the control device automatically generates the detection instruction when it receives a first completion signal. The first completion signal indicates that the winding device has wound one layer of roll diameter.

[0173] In some embodiments, the winding device includes a winding shaft and a material barrel located on the winding shaft; the driving device is further used to drive the winding shaft to rotate so as to wind the roll onto the material barrel.

[0174] Here, the winding shaft can be any suitable shaft capable of winding the coiled material. For example, a seamless steel pipe, an inflatable shaft, etc. The barrel is positioned on the winding shaft for winding the coiled material. For example, the winding device may include an inflatable shaft and a barrel positioned on the inflatable shaft. During implementation, the control device may first control the inflatable shaft to deflate in order to load the barrel onto the inflatable shaft. After the barrel is loaded onto the inflatable shaft, the control device may then control the inflatable shaft to inflate in order to secure the barrel to the inflatable shaft.

[0175] FIG8 is a third schematic diagram of the structure of a winding device provided in an embodiment of the present disclosure. As shown in FIG8 , the winding device 40 includes a winding device 41, a control device 42, a first driving device 43, and a measuring device 44, wherein:

[0176] The winding device 41 includes an inflatable shaft 411 and a barrel 412 located on the inflatable shaft 411;

[0177] The control device 42 controls the inflatable shaft 411 to deflate so as to load the barrel 412 into the inflatable shaft 411 , and then controls the inflatable shaft 411 to inflate so as to fix the barrel 412 on the inflatable shaft 411 ;

[0178] When the control device 42 receives the first completion signal, it automatically generates a detection instruction and sends the detection instruction to the measuring device 44;

[0179] The measuring device 44 receives the measurement instruction, obtains the current winding diameter of the winding device 41, and sends the current winding diameter to the control device 42;

[0180] The control device 42 determines a target tension control mode from at least two tension control modes based on the current winding diameter, and determines the external tension corresponding to the current winding diameter based on the target tension control mode. Based on the external tension, the control device 42 controls the first drive device 43 to drive the pneumatic shaft 411 to rotate so as to wind the coil onto the barrel 412.

[0181] In some embodiments, the winding device further includes a pushing device, which includes a pushing mechanism and a second driving device; the second driving device is used to receive the pushing instruction sent by the control device and drive the pushing mechanism to move to push out the barrel on the winding shaft.

[0182] Here, the pushing mechanism can be any suitable mechanism capable of pushing the barrel. The second driving device can be any suitable driving device, such as a motor, an electric cylinder, etc. During implementation, a communication connection can be established in advance between the second driving device and the control device to facilitate information transmission.

[0183] The ejection instruction may be any suitable instruction. The ejection instruction may be triggered, but is not limited to, manually or automatically. For example, the control device automatically generates the ejection instruction when it receives a second completion signal. The second completion signal indicates that the coiling device has wound up a roll of coiled material.

[0184] During implementation, the control device first controls the inflatable shaft to deflate, and then controls the second driving device to drive the pushing mechanism to move so as to push out the barrel.

[0185] FIG9 is a fourth schematic diagram of the structure of a winding device provided in an embodiment of the present disclosure. As shown in FIG9 , the winding device 40 includes a winding device 41, a control device 42, a first driving device 43, and a pushing device 45, wherein:

[0186] The winding device 41 includes an inflatable shaft 411 and a barrel 412 located on the inflatable shaft 411;

[0187] The control device 42 controls the inflatable shaft 411 to deflate so as to load the barrel 412 into the inflatable shaft 411 , and then controls the inflatable shaft 411 to inflate so as to fix the barrel 412 on the inflatable shaft 411 ;

[0188] The control device 42 determines a target tension control mode from at least two tension control modes based on the current winding diameter. According to the target tension control mode, the control device 42 determines an external tension corresponding to the current winding diameter based on the current winding diameter. Based on the external tension, the control device 42 controls the first drive device 43 to rotate the pneumatic shaft 411 to wind the coil onto the barrel 412.

[0189] When the control device 42 receives the second completion signal, it automatically generates an ejection instruction and sends the ejection instruction to the pushing device 45;

[0190] The pushing device 45 includes a pushing mechanism 451 and an electric cylinder 452 . Upon receiving the pushing instruction, the electric cylinder 452 drives the pushing mechanism 451 to move so as to push out the barrel 412 on the pneumatic shaft 411 .

[0191] In some embodiments, the winding device further includes a roll-changing device; the roll-changing device is configured to receive a roll-changing instruction sent by the control device and replace the material barrel on the winding shaft with a spare material barrel.

[0192] Here, the roll-changing device can be any suitable device capable of automatically changing rolls, such as a robot or a roll-changing device. The roll-changing device may include, but is not limited to, a drive device, a reel-changing shaft, and a spare barrel. The drive device is used to drive the reel-changing shaft to move the spare barrel onto the take-up shaft.

[0193] The roll change instruction may be any suitable instruction. The roll change instruction may be triggered, but is not limited to, manually or automatically. For example, the control device automatically generates the roll change instruction when it receives a second completion signal. The second completion signal indicates that the coil collection device has rewound a roll of coiled material.

[0194] In the disclosed embodiment, first, the total roll diameter is divided into multiple roll diameter segments, and different roll diameter segments adopt different tension control methods. Compared with a single control method, the accuracy of the tension is improved, thereby improving the quality of winding and providing effective protection for subsequent processes; secondly, by pre-storing the correspondence between the roll diameter segments, tension control methods, and coils, the time for determining the tension control method is shortened, thereby improving efficiency; finally, according to the winding roll diameter and the corresponding tension control method, the external tension of the winding is determined in real time. Compared with the use of constant tension or linear variable tension, the degree of interlayer slippage of the inner layer of the coil is reduced, thereby reducing the possibility of barrel phenomenon, uneven winding, coil wrinkles, etc., thereby improving winding efficiency while saving costs and improving product reliability.

[0195] It should be noted that, in the embodiments of the present disclosure, if the above method is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present disclosure is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present disclosure. The aforementioned storage medium includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk. In this way, the embodiments of the present disclosure are not limited to any specific combination of hardware and software.

[0196] An embodiment of the present disclosure provides a computer device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor implements the above method when executing the computer program.

[0197] It should be noted that FIG10 is a schematic diagram of the hardware entity of a computer device provided in an embodiment of the present disclosure. As shown in FIG10 , the hardware entity of the computer device 500 includes: a controller 501, a communication interface 502, and a memory 503, wherein:

[0198] The controller 501 generally controls the overall operation of the computer device 500. In practice, the controller 501 may be any suitable controller, such as a PLC.

[0199] The communication interface 502 enables the computer device to communicate with other terminals or servers through a network.

[0200] The memory 503 is configured to store instructions and applications executable by the controller 501 and to cache data to be processed or processed by the controller 501 and various modules in the computer device 500 (e.g., image data, audio data, voice communication data, and video communication data). This can be implemented using flash memory (FLASH) or random access memory (RAM). Data can be transmitted between the controller 501, the communication interface 502, and the memory 503 via a bus 504.

[0201] It should be noted that the description of the above device embodiment is similar to the description of the above method embodiment and has similar beneficial effects as the method embodiment. For technical details not disclosed in the device embodiment of the present disclosure, please refer to the description of the method embodiment of the present disclosure for understanding.

[0202] It should be understood that references to "one embodiment" or "an embodiment" throughout this specification mean that specific features, structures, or characteristics associated with an embodiment are included in at least one embodiment of the present disclosure. Therefore, the appearance of "in one embodiment" or "in an embodiment" throughout this specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of the present disclosure, the order of execution of the above-mentioned processes does not necessarily indicate a precedence in execution. The execution order of each process should be determined by its function and inherent logic and should not constitute any limitation on the implementation of the embodiments of the present disclosure. The above-mentioned numbers of the embodiments of the present disclosure are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. It should be noted that, as used herein, the terms "comprise," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprises an..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising such elements.

[0203] In the several embodiments provided in this disclosure, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of the units described is merely a logical functional division. In actual implementation, other division methods may be used, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not implemented. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between the devices or units can be electrical, mechanical, or other forms. The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment. In addition, the functional units in the embodiments of this disclosure may be all integrated into a single processing unit, each unit may be a separate unit, or two or more units may be integrated into a single unit; the integrated units may be implemented in the form of hardware or hardware plus software functional units.

[0204] Those skilled in the art will understand that all or part of the steps of the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above-mentioned method embodiments; and the aforementioned storage medium includes: a mobile storage device, a read-only memory (ROM), a magnetic disk or an optical disk, and other media that can store program codes. Alternatively, if the above-mentioned integrated unit of the present disclosure is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the relevant technology, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present disclosure. And the aforementioned storage medium includes: a mobile storage device, a ROM, a magnetic disk or an optical disk, and other media that can store program codes.

[0205] The above is only an embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present disclosure, and they should all be covered by the protection scope of the present disclosure.

Claims

1. A coil winding control method, applied to a winding device, the winding device comprising a winding device, a control device and a first driving device, the control method comprising: Based on the current winding diameter of the winding device, determining a target tension control mode from at least two tension control modes; wherein the at least two tension control modes include a linear tension control mode and a nonlinear tension control mode; According to the target tension control method, based on the current winding diameter, an external tension corresponding to the current winding diameter is determined; Based on the external tension, the first driving device is controlled to drive the winding device to wind up a layer of coiled material.

2. The control method according to claim 1, wherein: The method of determining a target tension control mode from at least two tension control modes based on the current winding diameter of the winding device includes: Determining a target winding diameter segment that matches the current winding winding diameter from at least two winding diameter segments corresponding to the coil; Based on the coil and the target coil diameter segment, the target tension control mode is determined from the at least two tension control modes.

3. The control method according to claim 2, wherein: The determining the target tension control mode from the at least two tension control modes based on the coil and the target coil diameter segment includes at least one of the following: When the target winding diameter segment is a preset winding diameter segment, the linear tension control mode is used as the target tension control mode; In a case where the target coil diameter segment is a non-preset coil diameter segment, the target tension control mode is determined from the at least two tension control modes based on the coil.

4. The control method according to claim 3, wherein: The determining the target tension control mode from the at least two tension control modes based on the coil includes at least one of the following: In the case where the coil belongs to the first type of coil, the linear tension control mode is used as the target tension control mode; In the case where the coil belongs to the second type of coil, the nonlinear tension control mode is used as the target tension control mode; wherein the attribute information of the second type of coil is different from the attribute information of the first type of coil.

5. The control method according to any one of claims 1 to 4, wherein: The step of determining the external tension corresponding to the current winding diameter according to the target tension control mode and based on the current winding diameter includes: Determining a target winding diameter segment that matches the current winding winding diameter from at least two winding diameter segments corresponding to the coil; According to the target tension control method, based on the current winding diameter and the target winding diameter segment, the external tension corresponding to the current winding diameter is determined.

6. The control method according to claim 5, wherein: In the case where the target tension control mode is a linear tension control mode, determining the external tension corresponding to the current winding diameter based on the current winding diameter and the target winding diameter segment includes: Determine a first difference between the current winding diameter and the minimum winding diameter of the target winding diameter segment; Determining a second difference between the maximum coiling diameter of the target coiling diameter segment and the minimum coiling diameter of the target coiling diameter segment; Based on the first difference and the second difference, an external tension corresponding to the current winding diameter is determined.

7. The control method according to claim 6, wherein: The determining, based on the first difference and the second difference, the external tension corresponding to the current winding diameter includes: determining a first ratio between the first difference and the second difference; Based on the first ratio and the taper coefficient corresponding to the coil, the external tension corresponding to the current winding diameter is determined.

8. The control method according to claim 7, wherein: The determining the external tension corresponding to the current winding diameter based on the first ratio and the taper coefficient corresponding to the coil includes: Determining a second ratio between the taper coefficient corresponding to the coil and a preset first value; determining a first product between the second ratio and the first ratio; Based on the first product, the external tension corresponding to the current winding diameter is determined.

9. The control method according to any one of claims 5 to 8, wherein: In the case where the target tension control mode is a nonlinear tension control mode, determining the external tension corresponding to the current winding diameter based on the current winding diameter and the target winding diameter segment includes: Determining a third ratio between the minimum winding diameter of the target winding diameter segment and the current winding winding diameter; Based on the third ratio, the external tension corresponding to the current winding diameter is determined.

10. The control method according to claim 9, wherein: The determining, based on the third ratio, the external tension corresponding to the current winding diameter includes: Determining a third difference between the preset second value and the third ratio; Based on the third difference and the taper coefficient corresponding to the coil, the external tension corresponding to the current winding diameter is determined.

11. The control method according to claim 10, wherein: The determining the external tension corresponding to the current winding diameter based on the third difference and the taper coefficient corresponding to the coil includes: Determining a fourth ratio between the taper coefficient corresponding to the coil and a preset first value; determining a second product between the fourth ratio and the third difference; Based on the second product, the external tension corresponding to the current winding diameter is determined.

12. The control method according to any one of claims 1 to 11, wherein: The control method further comprises: Determining a target partitioning strategy from at least one partitioning strategy based on the property information of the coil; According to the target division strategy, the total coil diameter of the coil is divided into at least two coil diameter segments.

13. A winding device, comprising a winding device, a control device and a first driving device, wherein: The first driving device is used to drive the winding device to wind the coiled material; The control device is used to determine a target tension control mode from at least two tension control modes based on the current winding diameter of the winding device, and the at least two tension control modes include a linear tension control mode and a nonlinear tension control mode; according to the target tension control mode, based on the current winding diameter, determine the external tension corresponding to the current winding diameter; based on the external tension, control the first drive device to drive the winding device to wind up a layer of coiled material.

14. The winding device according to claim 13, wherein: The winding device also includes a measuring device; The measuring device is used to receive the detection instruction sent by the control device and obtain the current winding diameter of the winding device.

15. The winding device according to claim 13 or 14, wherein: The winding device comprises a winding shaft and a barrel located on the winding shaft; The driving device is also used to drive the winding shaft to rotate so as to wind the coil onto the barrel.

16. The winding apparatus according to claim 15, wherein: The winding device further comprises a material pushing device, which comprises a material pushing mechanism and a second driving device; The second driving device is used to receive the pushing instruction sent by the control device and drive the pushing mechanism to move so as to push out the barrel on the winding shaft.

17. The winding apparatus according to claim 15 or 16, wherein: The winding device also includes a roll changing device; The roll changing device is used to receive the roll changing instruction sent by the control device and replace the barrel on the winding shaft with a spare barrel.

18. The winding apparatus according to any one of claims 13 to 17, wherein: The control device is further used to determine a target winding diameter segment matching the current winding winding diameter from at least two winding diameter segments corresponding to the coil; based on the coil and the target winding diameter segment, select the at least two tension control modes The target tension control mode is determined in.

19. The winding apparatus according to claim 18, wherein: The control device is also used for at least one of the following: when the target winding diameter segment is a preset winding diameter segment, using the linear tension control mode as the target tension control mode; when the target winding diameter segment is a non-preset winding diameter segment, based on the coil, determining the target tension control mode from the at least two tension control modes.

20. The winding apparatus according to claim 19, wherein The control device is also used for at least one of the following: when the coil belongs to the first category of coils, the linear tension control method is used as the target tension control method; when the coil belongs to the second category of coils, the nonlinear tension control method is used as the target tension control method; wherein the attribute information of the second category of coils is different from the attribute information of the first category of coils.

Images