Unwinding device, tail material detection method of unwinding device and battery production equipment

Abstract

The present application discloses an unwinding device, a tail material detection method of the unwinding device, and a battery production device. The unwinding device includes a first mounting frame, a reel, a second mounting frame, and a first measuring component. The reel is connected to the first mounting frame, and the reel is used to install and unwind the strip material. The second mounting frame is spaced apart from the first mounting frame. The first measuring component is connected to the second mounting frame and is arranged toward the reel. The first measuring component is used to measure the roll diameter of the strip material located on the reel and obtain the first roll diameter of the strip material. Among them, the unwinding device also includes a second measuring component and a processor, and the processor is connected to the first measuring component and the second measuring component. The second measuring component is connected to the reel and is used to measure the running length of the strip material. The processor is used to determine the target roll diameter based on the first roll diameter measured by the first measuring component and the running length measured by the second measuring component. According to the present application, the measurement accuracy of the roll diameter of the strip material of the unwinding device can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to an unwinding device, a tail material detection method for an unwinding device, and battery production equipment. Background Art

[0002] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0003] In the process of pole piece production, it is usually necessary to measure the diameter of the strip on the unwinding device to determine whether the strip needs to be replaced to maintain the continuity of production. The measurement accuracy of the strip diameter of the unwinding device has an important impact on the economic benefits of the battery. Therefore, how to effectively improve the measurement accuracy of the strip diameter on the unwinding device is a technical problem that needs to be continuously improved in battery technology. Summary of the invention

[0004] In view of the above problems, the present application provides an unwinding device, a tail material detection method for an unwinding device, and a battery production equipment, which can effectively improve the measurement accuracy of the coil diameter of the unwinding device.

[0005] In a first aspect, an embodiment of the present application provides an unwinding device, the unwinding device includes a first mounting frame, a reel, a second mounting frame and a first measuring assembly, the reel is connected to the first mounting frame, and the reel is used to install and unwind the tape. The second mounting frame is spaced apart from the first mounting frame. The first measuring assembly is connected to the second mounting frame and is arranged toward the reel, the first measuring assembly is used to measure the roll diameter of the tape on the reel, and obtain the first roll diameter of the tape, the first roll diameter is used to determine the target roll diameter, and the target roll diameter is used to determine whether to replace the tape.

[0006] The unwinding device further includes a second measuring component and a processor, wherein the processor is connected to the first measuring component and the second measuring component. The second measuring component is connected to the reel and is used to measure the running length of the tape, and the processor is used to determine the target reel diameter according to the first reel diameter measured by the first measuring component and the running length measured by the second measuring component.

[0007] The above technical solution isolates the force conduction between the reel and the first measuring component by respectively arranging the reel and the first measuring component on the first mounting frame and the second mounting frame which are spaced apart, thereby reducing the influence of the vibration generated by the reel during the unwinding process on the first measuring component, thereby improving the measurement accuracy of the reel diameter of the unwinding device.

[0008] The measurement data of the first measuring component and the second measuring component are collaboratively processed by the processor, so that the target winding diameter can be collaboratively determined by using the first winding diameter measured by the first measuring component and the tape running length measured by the second measuring component. This can reduce the impact of the measurement error of a single measuring component on the overall measurement accuracy, thereby further improving the measurement accuracy of the winding diameter of the unwinding device.

[0009] In some embodiments of the first aspect, the unwinding device further includes a sensing component, which is used to detect the number of unwinding turns of the strip material after the first winding diameter measured by the first measuring component reaches a target value, and to issue a detection instruction.

[0010] The processor is also used to: respond to the detection instruction, correct the first winding diameter measured by the first measuring component according to the running length measured by the second measuring component to obtain the corrected winding diameter; obtain the total running length of the second measuring component in real time after the first winding diameter measured by the first measuring component reaches the target value, and convert the total running length into the second winding diameter according to a preset conversion relationship; determine the target winding diameter according to the difference between the corrected winding diameter and the second winding diameter.

[0011] The above technical scheme can not only calibrate and correct the measurement data of the first measuring component according to the measurement data of the second measuring component to reduce the measurement error of the first measuring component, but also use the different measurement characteristics of the first measuring component and the second measuring component to collaboratively determine the target coil diameter in stages, thereby greatly improving the measurement accuracy of the coil diameter of the unwinding device.

[0012] In some embodiments of the first aspect, the first measuring component includes a fixed seat and a measuring piece, the fixed seat is connected to the second mounting frame, the measuring piece is movably connected to the fixed seat, and the measuring piece is used to measure the roll diameter of the strip material on the reel.

[0013] The above technical solution can not only simplify the installation difficulty of the first measuring component, but also flexibly adjust the position of the measuring piece so that the measuring piece has a good measuring distance and measuring angle, thereby helping to further improve the measurement accuracy of the coil diameter of the unwinding device.

[0014] In some embodiments of the first aspect, the first measuring assembly further includes a first movable component, the first movable component is connected to the fixed seat, the measuring piece is connected to the first movable component, and the first movable component is used to drive the measuring piece to move closer to or away from the roll.

[0015] The above technical solution can increase the measurable range of the roll diameter of the measuring member and improve the applicability of the measuring member by introducing the first movable member to drive the measuring member.

[0016] In some embodiments of the first aspect, the first movable component includes a screw and a connecting piece, the screw is rotatably connected to the fixed seat, and the screw is configured to be able to rotate around its own axis, the connecting piece is movably connected to the screw, the connecting piece is configured to be able to convert the rotation of the screw into its own linear motion along the axis of the screw, and the measuring piece is connected to the connecting piece.

[0017] The above technical solution realizes driving the measuring piece by introducing a screw rod and a connecting piece to cooperate with each other, and has a simple and stable structure, occupies less space and has low cost.

[0018] In some embodiments of the first aspect, the first measuring component also includes a first limiter, which is movably connected to the fixed seat, and the first limiter is configured to limit the rotation of the screw or release the restriction on the rotation of the screw based on its own activity under the action of external force.

[0019] The above technical solution introduces the first limiter, and when the measuring piece measures the winding diameter of the strip material on the reel at a specific position, the first limiter can limit the rotation of the screw to keep the measuring piece stable and reduce the measurement error.

[0020] In some embodiments of the first aspect, the first measuring assembly is arranged on the reel at intervals in the vertical direction, and the first measuring assembly is located above the reel, and the first moving component is used to drive the measuring member to move in the vertical direction, which can reduce the occupation of ground space and improve the overall structural compactness of the unwinding device.

[0021] In some embodiments of the first aspect, the first measuring component also includes a second movable part, the second movable part is connected to the first movable part, the measuring part is connected to the second movable part, the second movable part is used to drive the measuring part to rotate, and the rotation axis of the measuring part is parallel to the axis of the roll.

[0022] The above technical solution further introduces a second movable component, so that the measuring piece can be rotated to adapt to various measurement requirements to maintain the best measurement angle, thereby helping to further improve the applicability and measurement accuracy of the measuring piece.

[0023] In some embodiments of the first aspect, the second movable component is rotatably connected to the first movable component, and a rotation axis of the second movable component is parallel to an axis of the reel.

[0024] The above technical solution configures the second movable component itself as a rotatable structure so as to synchronously drive the measuring component to rotate during its own rotation. The structure is simple, and the overall structural complexity of the first measuring component can be reduced, which helps to reduce costs.

[0025] In some embodiments of the first aspect, the unwinding device further includes a roll-changing mechanism and a controller, the roll-changing mechanism is connected to the first mounting frame, the number of rolls is multiple, the multiple rolls are connected to the roll-changing mechanism, and the controller is connected to the first measuring component and the roll-changing mechanism. The roll-changing mechanism is used to drive the multiple rolls to move to preset positions in sequence, and the rolls located at the preset positions are used to unwind the strip. The controller is used to send a roll-changing signal to the roll-changing mechanism when the target roll diameter reaches a trigger value, and the roll-changing mechanism responds to the roll-changing signal and drives another roll to move to the preset position.

[0026] The above technical solution introduces a roll-changing mechanism. When the target roll diameter reaches the trigger value, the roll-changing mechanism can be controlled to achieve automatic and rapid replacement of the roll, so that the roll with a new full material strip moves to the preset position for unwinding, thereby optimizing the roll-changing process and helping to improve the overall production efficiency and continuity.

[0027] In a second aspect, the present application provides a tail material detection method for an unwinding device, comprising:

[0028] When the reel is mounted on the first mounting frame, controlling the reel to unwind the tape;

[0029] When the first measuring component is installed on the second mounting frame, the first measuring component is controlled to measure the winding diameter of the strip material to obtain the first winding diameter of the strip material, and the first winding diameter is used to determine the target winding diameter, and the target winding diameter is used to determine whether to replace the strip material, wherein the second mounting frame is spaced apart from the first mounting frame, and the first measuring component is connected to the second mounting frame and arranged toward the reel.

[0030] By respectively arranging the reel and the first measuring component on the first mounting frame and the second mounting frame which are spaced apart, the force conduction between the reel and the first measuring component is isolated, thereby reducing the influence of the vibration generated by the reel during the unwinding process on the first measuring component, so that the first measuring component has a smaller error in detecting the winding diameter of the web, thereby improving the measurement accuracy of the winding diameter of the web of the unwinding device.

[0031] Among them, the tail material detection method of the unwinding device also includes:

[0032] Measuring the running length of the tape material by a second measuring component, wherein the second measuring component is connected to the reel;

[0033] The target winding diameter is determined according to the tape running length measured by the second measuring component and the first winding diameter measured by the first measuring component.

[0034] By collaboratively processing the measurement data of the first measuring component and the second measuring component, the target winding diameter can be collaboratively determined by utilizing the first winding diameter measured by the first measuring component and the tape running length measured by the second measuring component. This can reduce the impact of the measurement error of a single measuring component on the overall measurement accuracy, thereby further improving the measurement accuracy of the winding diameter of the unwinding device.

[0035] In some embodiments of the second aspect, the step of determining the target winding diameter according to the tape running length measured by the second measuring component and the first winding diameter measured by the first measuring component includes:

[0036] After the first coil diameter measured by the first measuring component reaches the target value, the sensing component is controlled to detect the number of unwinding turns of the strip, wherein the sensing component generates a detection instruction when detecting that the number of unwinding turns reaches a multiple of C, wherein C is a preset positive integer;

[0037] Obtaining a detection instruction issued by a sensing component;

[0038] In response to receiving N detection instructions, performing N correction processes on the first coil diameter to obtain N corrected first coil diameters, where N is a positive integer;

[0039] The method for obtaining the nth corrected first winding diameter for the nth correction process includes: in response to the nth detection instruction, obtaining the nth measured winding diameter obtained by the first measuring component for the nth time, and obtaining the nth running length obtained by the second measuring component for the nth time, wherein n∈N; converting the nth running length into the nth winding diameter; determining the nth corrected first winding diameter according to the sum of the nth measured winding diameter and the nth winding diameter;

[0040] Calculate the average value of N corrected first coil diameters to obtain a corrected coil diameter;

[0041] Real-time acquisition of the total tape running length after the first winding diameter measured by the second measuring component reaches the target value, and conversion of the total tape running length into the second winding diameter;

[0042] The target coil diameter is determined based on the difference between the corrected coil diameter and the second coil diameter.

[0043] The above technical scheme can not only calibrate and correct the measurement data of the first measuring component according to the measurement data of the second measuring component to reduce the measurement error of the first measuring component, but also use the different measurement characteristics of the first measuring component and the second measuring component to collaboratively determine the target coil diameter in stages, thereby greatly improving the measurement accuracy of the coil diameter of the unwinding device.

[0044] In some embodiments of the second aspect, the tail material detection method of the unwinding device further includes:

[0045] When the target roll diameter reaches the trigger value, a roll changing signal is sent to the roll changing mechanism through the controller, wherein the controller is connected to the first measuring component and the roll changing mechanism, the roll changing mechanism is connected to the first mounting frame, and the roll changing mechanism is connected to the plurality of rolls;

[0046] The other reel is driven to move to a preset position by the reel changing mechanism, wherein the reel located at the preset position is used for unwinding the strip material.

[0047] The above technical solution introduces a roll-changing mechanism. When the target roll diameter reaches the trigger value, the roll-changing mechanism can be controlled to achieve automatic and rapid replacement of the roll, so that the roll with a new full material strip moves to the preset position for unwinding, thereby optimizing the roll-changing process and helping to improve the overall production efficiency and continuity.

[0048] In a third aspect, the present application provides a battery production device, which includes the unwinding device provided in any embodiment of the first aspect.

[0049] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, 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 application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0051] Figure 1 A schematic diagram of a three-dimensional structure of an unwinding device provided in some embodiments of the present application;

[0052] Figure 2 A partially enlarged structural schematic diagram of an unwinding device provided in some embodiments of the present application;

[0053] Figure 3 A schematic structural diagram of a measuring method of a first measuring component of an unwinding device provided in some embodiments of the present application;

[0054] Figure 4 A schematic diagram of the three-dimensional structure of a first measuring component of an unwinding device provided in some embodiments of the present application in a state where the first limiting member limits the rotation of the screw;

[0055] Figure 5A schematic diagram of the three-dimensional structure of a first measuring component of an unwinding device provided in some embodiments of the present application in a state where the first limiting member releases the restriction on the rotation of the screw;

[0056] Figure 6 A schematic flow chart of a tail material detection method for an unwinding device provided in some embodiments of the present application.

[0057] The reference numerals in the specific implementation manner are as follows:

[0058] 100. With material;

[0059] 10. first mounting frame; 20. reel; 30. second mounting frame;

[0060] 40. first measuring component; 41. fixing seat; 42. measuring member; 43. first moving member; 431. screw rod; 432. connecting member; 44. first stop member; 45. second moving member;

[0061] 50. Second measuring component; 60. Processor; 70. Sensing component; 80. Roll changing mechanism; 90. Controller. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0063] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0064] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0065] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0066] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0067] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0068] The term “plurality” used in this application refers to two or more (including two).

[0069] In the present application, the term "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; meanwhile, "vertical" includes not only the absolutely vertical situation, but also the roughly vertical situation conventionally recognized in engineering.

[0070] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0071] In the production process of pole pieces, it is usually necessary to measure the diameter of the strip on the unwinding device to determine whether the strip needs to be replaced to maintain the continuity of production. The measurement accuracy of the unwinding device strip diameter has an important impact on the economic benefits of the battery.

[0072] In the related art, ultrasonic sensors are usually used to measure the diameter of the strip on the unwinding device. However, due to factors such as the roll processing accuracy, roll deformation, ultrasonic sensor measurement accuracy, and equipment vibration during the production process, the measurement accuracy of the strip diameter of the unwinding device is poor. In addition, since the thickness of the strip is very small, the measured value of the strip diameter on the unwinding device by the ultrasonic sensor is often much smaller than the actual value, which leads to serious waste when replacing the strip.

[0073] Based on the above considerations, an embodiment of the present application provides a reeling device, which includes a first mounting frame, a reel, a second mounting frame, and a first measuring assembly. The reel is connected to the first mounting frame, and the reel is used to install and reel the tape. The second mounting frame is spaced apart from the first mounting frame. The first measuring assembly is connected to the second mounting frame and is arranged toward the reel. The first measuring assembly is used to measure the reel diameter of the tape on the reel and obtain the first reel diameter of the tape. The first reel diameter is used to determine the target reel diameter, and the target reel diameter is used to determine whether to replace the tape.

[0074] The above technical solution isolates the force conduction between the reel and the first measuring component by respectively arranging the reel and the first measuring component on the first mounting frame and the second mounting frame which are spaced apart, thereby reducing the influence of the vibration generated by the reel during the unwinding process on the first measuring component, thereby improving the measurement accuracy of the reel diameter of the unwinding device.

[0075] The unwinding device provided in the embodiment of the present application is introduced below with reference to the accompanying drawings. Figure 1 A schematic diagram of a three-dimensional structure of an unwinding device provided in some embodiments of the present application, Figure 2 This is a partial enlarged structural schematic diagram of an unwinding device provided in some embodiments of the present application. Figure 3 A structural schematic diagram of a measuring method of a first measuring component of an unwinding device provided in some embodiments of the present application.

[0076] refer to Figures 1 to 3 The embodiment of the present application provides an unwinding device, which includes a first mounting frame 10, a reel 20, a second mounting frame 30 and a first measuring component 40. The reel 20 is connected to the first mounting frame 10, and the reel 20 is used to install and unwind the strip 100. The second mounting frame 30 is spaced apart from the first mounting frame 10. The first measuring component 40 is connected to the second mounting frame 30 and is disposed toward the reel 20. The first measuring component 40 is used to measure the coiling diameter of the strip 100 located on the reel 20, and obtain the first coiling diameter of the strip 100, the first coiling diameter is used to determine the target coiling diameter, and the target coiling diameter is used to determine whether to replace the strip 100.

[0077] The unwinding device disclosed in the embodiment of the present application can be applied to the unwinding of various strips. For example, the strip 100 can refer to the pole piece of the battery, and the specific strip 100 can be a positive pole piece or a negative pole piece; or, the strip 100 can also refer to a steel sheet, an adhesive tape, a cloth tape or a paper tape, etc. Among them, when the strip 100 is a pole piece metal foil (such as copper foil or aluminum foil), the unwinding device at this time can be specifically used in the production process of the pole piece.

[0078] The first mounting frame 10 is a supporting structure for the reel 20, and its main function is to provide a stable mounting platform and operating space for the reel 20. The second mounting frame 30 is a supporting structure for the first measuring assembly 40, and its main function is to provide a stable mounting platform and operating space for the first measuring assembly 40.

[0079] The second mounting frame 30 is spaced apart from the first mounting frame 10, which means that the second mounting frame 30 and the first mounting frame 10 are independent of each other and have a certain spacing distance therebetween. When one of the first mounting frame 10 and the second mounting frame 30 vibrates, it will not affect the other.

[0080] The reel 20 may be detachably connected to the first mounting frame 10, or may be integrally arranged on the first mounting frame 10. The reel 20 may be directly connected to the first mounting frame 10, or may be restricted on the first mounting frame 10 by other components.

[0081] Optionally, the number of the reels 20 may be one or more. As an example, in the case where there are multiple reels 20, when the target winding diameter reaches the trigger value and the strip 100 needs to be replaced, another reel 20 with a new full strip can be quickly replaced and unwound, thereby reducing the replacement interval of the strip 100 and improving the continuity of the overall production.

[0082] The first measuring assembly 40 may be detachably connected to the second mounting frame 30, or may be integrally provided on the second mounting frame 30. The first measuring assembly 40 may be directly connected to the second mounting frame 30, or may be restricted on the second mounting frame 30 by other components.

[0083] Optionally, the number of the first measuring components 40 may be one or more. As an example, when there are more than one first measuring components 40, the first coil diameters measured by the multiple first measuring components 40 are used to jointly determine the target coil diameter, so as to improve the measurement accuracy of the coil diameter of the unwinding device as a whole.

[0084] In some examples, the second mounting frame 30 may adopt a suspension structure to reduce the occupation of floor space. The second mounting frame 30 is fixed above or on the side of the production line through a suspension rod or a bracket, and may also be equipped with a shock-absorbing structure to prevent mechanical vibration from affecting the measurement accuracy of the first measuring component 40 in the production environment.

[0085] In some examples, the first measuring component 40 can be movably connected to the second mounting frame 30, for example, by using a track or a sliding device to achieve movement and adjustment of the first measuring component 40, so that the first measuring component 40 can adapt to measurement requirements at different positions and angles.

[0086] The tape 100 is wound along a preset direction and installed on the reel 20 to form a material roll. The roll diameter of the tape 100 refers to the product of the number of layers of the material roll wound on the reel 20 and the thickness of each layer of the tape 100.

[0087] The first coil diameter refers to the coil diameter of the strip 100 on the reel 20 measured by the first measuring component 40 at a certain moment.

[0088] The target coil diameter is used to indicate the remaining amount of the tape. When the target coil diameter reaches the trigger value, it can be determined that the remaining tape is insufficient and the tape needs to be replaced 100; when the target coil diameter is greater than the trigger value, it can be determined that the tape does not need to be replaced yet. The specific value of the trigger value can be selected according to the actual application environment, such as 10-100 microns.

[0089] For example, the specific measurement method of the first measuring component 40 to measure the coil diameter may be as follows: Figure 3 As shown, the first measuring component 40 measures the distance H1 from itself to the surface of the reel 20, and the first measuring component 40 measures the distance H2 from itself to the surface of the reel 20, and the winding diameter of the strip 100 located on the reel 20 is obtained by H1-H2=h, wherein h is the winding diameter of the strip 100 located on the reel 20.

[0090] In some examples, the target winding diameter can be directly determined by using the first winding diameter, that is, the first winding diameter obtained by measuring the winding diameter of the strip 100 on the reel 20 by the first measuring component 40 is used as the target winding diameter. When the first winding diameter reaches the trigger value, it can be determined that the remaining strip is insufficient and the strip 100 needs to be replaced; when the first winding diameter is greater than the trigger value, it can be determined that the strip 100 does not need to be replaced yet.

[0091] In other examples, the first coil diameter may be used in conjunction with other information to determine the target coil diameter, wherein the other information may be, but is not limited to, the running length of the tape 100, the number of unwinding turns of the tape 100, or the unwinding time of the tape 100. When the target coil diameter determined by the first coil diameter and other information reaches a trigger value, it can be determined that the remaining tape is insufficient and the tape 100 needs to be replaced; when the target coil diameter determined by the first coil diameter and other information is greater than the trigger value, it can be determined that the tape 100 does not need to be replaced at present.

[0092] Optionally, the first measuring component 40 may include, but is not limited to, a non-contact laser sensor or an ultrasonic sensor.

[0093] The above technical solution is able to reduce the influence of the vibration generated by the reel 20 during the unwinding of the strip 100 on the first measuring component 40 by respectively arranging the reel 20 and the first measuring component 40 on the first mounting frame 10 and the second mounting frame 30 which are spaced apart, thereby improving the measurement accuracy of the strip diameter of the unwinding device.

[0094] In some embodiments, the unwinding device further includes a second measuring component 50 and a processor 60, wherein the processor 60 is connected to the first measuring component 40 and the second measuring component 50. The second measuring component 50 is connected to the reel 20 and is used to measure the running length of the tape 100, and the processor 60 is used to determine the target reel diameter according to the first reel diameter measured by the first measuring component 40 and the running length measured by the second measuring component 50.

[0095] Exemplarily, the processor 60 can match, calculate, compare and analyze the first winding diameter measured by the first measuring component 40 and the running length measured by the second measuring component 50 through a built-in calculation algorithm to further calculate the above-mentioned target winding diameter, which is used to indicate the remaining amount of the tape.

[0096] In some examples, the processor 60 can determine the first remaining amount of the tape material according to the first coil diameter measured by the first measuring component 40, and the processor 60 can determine the second remaining amount of the tape material according to the tape running length measured by the second measuring component 50 and the length of the original tape material installed on the reel 20. The processor 60 compares the first remaining amount of the tape material with the second remaining amount of the tape material, and takes the larger one of the two as the target coil diameter.

[0097] In other examples, the processor 60 may first determine the initial coil diameter according to the first coil diameter measured by the first measuring component 40 at the target time. The processor 60 then determines the cumulative change in coil diameter of the tape 100 according to the running length measured in real time by the second measuring component 50. The processor 60 uses the difference between the initial coil diameter and the cumulative change in coil diameter as the target coil diameter.

[0098] Optionally, the second measuring component 50 may include, but is not limited to, an encoder or a distance sensor.

[0099] The above technical solution uses the processor 60 to collaboratively process the measurement data of the first measuring component 40 and the second measuring component 50, so as to collaboratively determine the target winding diameter using the first winding diameter measured by the first measuring component 40 and the running length measured by the second measuring component 50, thereby reducing the influence of the measurement error of a single measuring component on the overall measurement accuracy, thereby further improving the measurement accuracy of the winding diameter of the unwinding device.

[0100] In some embodiments, the unwinding device further includes a sensing component 70, which is used to detect the number of unwinding turns of the strip 100 and issue a detection instruction after the first winding diameter measured by the first measuring component 40 reaches a target value.

[0101] The processor 60 is further configured to: in response to the detection instruction, correct the first winding diameter measured by the first measuring component 40 according to the tape running length measured by the second measuring component 50 to obtain a corrected winding diameter.

[0102] The total tape running length after the first winding diameter measured by the first measuring component 40 reaches the target value is acquired in real time by the second measuring component 50, and the total tape running length is converted into the second winding diameter according to a preset conversion relationship.

[0103] The target coil diameter is determined based on the difference between the corrected coil diameter and the second coil diameter.

[0104] Exemplarily, the sensing component 70 can detect the number of unwinding turns of the strip 100, and the detection timing of the sensing component 70 is controllable. For example, the sensing component 70 can start detecting the number of unwinding turns of the strip 100 in response to the instruction of the processor 60. Optionally, when the sensing component 70 starts the detection, the initial value of the number of unwinding turns can be, but is not limited to, 0, 5, 10, or 20.

[0105] The number of unwinding turns detected by the sensing component 70 can be sent to the processor 60 in real time, or the current number of unwinding turns can be synchronized to the processor 60 by sending a preset instruction.

[0106] In some examples, the sensing component 70 may include a light emitting device and a receiving device. The light emitting device is used to emit photoelectric signals, and the receiving device is used to receive photoelectric signals. When the reel 20 rotates one circle, the receiving state of the photoelectric signal of the receiving device changes and issues a detection instruction.

[0107] Specifically, the light emitting device can be installed at one end of the reel 20 along the rotation axis, and rotate synchronously with the reel 20. Every time the reel 20 rotates one circle, the photoelectric signal emitted by the light emitting device changes from not emitting into the receiving device to emitting into the receiving device. The receiving device issues a detection instruction when the photoelectric signal changes from the non-receiving state to the receiving state. In this way, the sensing component 70 is a photoelectric switch, which has the advantage of high detection accuracy.

[0108] In other examples, the receiving device can also be configured to issue a detection instruction when the photoelectric signal changes from a receiving state to a non-receiving state. For example, the light emitting device and the receiving device are fixed and arranged relative to each other, and a light shielding member is installed on the reel 20 at a set position, and the light shielding member can rotate with the reel 20 to between the light emitting device and the receiving device and shield the photoelectric signal.

[0109] The shading member can be installed at one end of the reel 20 along the rotation axis and rotate synchronously with the reel 20. After the shading member rotates one circle with the reel 20, the shading member rotates between the light emitting device and the receiving device and blocks the photoelectric signal, and the receiving device changes from a receiving state to a non-receiving state for the photoelectric signal. The light emitting device and the receiving device can be separate components.

[0110] According to some other embodiments of the present application, the sensing component 70 is a slot-type photoelectric switch or a beam-type photoelectric switch.

[0111] Among them, slot-type photoelectric switches have the advantages of low cost, fast response speed and small space occupation.

[0112] By setting the sensing component 70 as a slot-type photoelectric switch or a beam-type photoelectric switch, it is easy to obtain by purchasing, and the light-emitting device and the receiving device are integrated in a single component, and no separate installation is required. Of course, in other embodiments of the present application, the sensing component 70 can also be replaced by a Hall proximity switch, etc.

[0113] After the first winding diameter measured by the first measuring component 40 reaches the target value, the processor 60 can correct the first winding diameter measured by the first measuring component 40 according to the running length measured by the second measuring component 50 to obtain the corrected winding diameter. After that, the processor 60 can obtain the total running length of the first winding diameter measured by the second measuring component 50 after the first measuring component 40 reaches the target value, and convert the total running length into the second winding diameter, and then determine the target winding diameter according to the difference between the corrected winding diameter and the second winding diameter.

[0114] For specific examples of correction methods and examples of methods for collaboratively determining a target roll diameter using the first measuring component 40 and the second measuring component 50 , reference may be made to the relevant description below in this application, which will not be repeated here.

[0115] The above technical scheme can not only calibrate and correct the measurement data of the first measuring component 40 according to the measurement data of the second measuring component 50 to reduce the measurement error of the first measuring component 40, but also use the different measurement characteristics of the first measuring component 40 and the second measuring component 50 to collaboratively determine the target coil diameter in stages, thereby greatly improving the measurement accuracy of the coil diameter of the unwinding device.

[0116] Figure 4 A schematic diagram of the three-dimensional structure of a first measuring component of an unwinding device provided in some embodiments of the present application in a state where the first limiter restricts the rotation of the screw, Figure 5 A schematic diagram of the three-dimensional structure of a first measuring component of an unwinding device provided in some embodiments of the present application, in a state where the first limiting member releases the restriction on the rotation of the screw.

[0117] Continue to refer Figures 4 to 5 In some embodiments, the first measuring component 40 includes a fixed seat 41 and a measuring piece 42. The fixed seat 41 is connected to the second mounting frame 30. The measuring piece 42 is movably connected to the fixed seat 41. The measuring piece 42 is used to measure the roll diameter of the strip 100 located on the reel 20.

[0118] Exemplarily, the fixing base 41 is connected to the second mounting frame 30 to provide support and mounting reference for the measuring member 42. The fixing base 41 is usually made of high-strength, corrosion-resistant materials (such as aluminum alloy, stainless steel, etc.) to have good stability and vibration resistance during long-term use.

[0119] Exemplarily, the fixing base 41 may be detachably connected to the second mounting frame 30, or may be integrally provided on the second mounting frame 30. The fixing base 41 may be directly connected to the second mounting frame 30, or may be restricted on the second mounting frame 30 by other components.

[0120] The measuring member 42 is movably connected to the fixing seat 41 . This design facilitates the measuring member 42 to adjust its relative position with the reel 20 , so that the measuring member 42 has a good measuring distance and measuring angle.

[0121] The measuring member 42 can be movable relative to the fixing seat 41 by, but is not limited to, an electric slide rail, a servo motor, a telescopic rod structure, a slide rail and slider structure, a screw structure or an electric cylinder structure.

[0122] Optionally, the measuring element 42 is a non-contact laser sensor or an ultrasonic sensor.

[0123] The above technical solution can not only simplify the installation difficulty of the first measuring component 40, but also flexibly adjust the position of the measuring member 42 so that the measuring member 42 has a good measuring distance and measuring angle, thereby helping to further improve the measurement accuracy of the coil diameter of the unwinding device.

[0124] In some embodiments, the measuring member 42 is detachably connected to the fixing base 41 to facilitate installation, removal and maintenance of the measuring member 42 .

[0125] In some embodiments, the first measuring component 40 further includes a first movable component 43 , the first movable component 43 is connected to the fixed seat 41 , the measuring member 42 is connected to the first movable component 43 , and the first movable component 43 is used to drive the measuring member 42 to move closer to or away from the reel 20 .

[0126] The first moving part 43 is used to drive the measuring member 42 to move closer to or away from the reel 20, and is specifically used to meet the measurement requirements of the strip 100 with different reel diameters. The first moving part 43 includes but is not limited to at least one of an electric slide rail, a servo motor, a telescopic rod structure, a slide rail slider structure, a screw rod structure, and an electric cylinder structure.

[0127] For example, when measuring a strip 100 with a larger winding diameter, the first moving member 43 drives the measuring member 42 to move in a direction away from the reel 20, so that the measuring member 42 is at a better measuring distance. When measuring a strip 100 with a smaller winding diameter, the first moving member 43 drives the measuring member 42 to move in a direction close to the reel 20, so that the measuring member 42 is at a better measuring distance.

[0128] In some examples, the first movable component 43 may also include a multi-axis robotic arm, which can add rotation and tilt functions so that the measuring component 42 can be flexibly adjusted in position under complex measurement conditions.

[0129] The above technical solution can increase the measurable range of the roll diameter of the measuring member 42 and improve the applicability of the measuring member 42 by introducing the first moving member 43 to drive the measuring member 42 .

[0130] In some embodiments, the first movable component 43 includes a screw 431 and a connecting member 432. The screw 431 is rotatably connected to the fixed base 41, and the screw 431 is configured to be able to rotate around its own axis. The connecting member 432 is movably connected to the screw 431, and the connecting member 432 is configured to be able to convert the rotation of the screw 431 into its own linear motion along the axial direction of the screw 431. The measuring member 42 is connected to the connecting member 432.

[0131] Exemplarily, the connecting member 432 is provided with an internal thread structure matching the external thread of the screw rod 431 , and the connecting member 432 and the screw rod 431 form a threaded connection. When the screw rod 431 rotates, the connecting member 432 will perform a stable linear movement along the axial direction of the screw rod 431 .

[0132] The screw rod 431 can be directly connected to the fixing base 41, or it can be restricted on the fixing base 41 through other components. The connecting member 432 can be directly connected to the screw rod 431, or it can be restricted on the screw rod 431 through other components. The measuring member 42 can be directly connected to the connecting member 432, or it can be restricted on the connecting member 432 through other components.

[0133] The rotation of the screw rod 431 can be driven by a driving motor or manually by an operator. In some examples, the first moving component 43 also includes a hand wheel, which is connected to one end of the screw rod 431 along its own axis, so that the operator can drive the screw rod 431 to rotate by turning the hand wheel. This arrangement is simple in structure and helps to reduce costs.

[0134] The above technical solution realizes driving the measuring member 42 by introducing the screw rod 431 and the connecting member 432 to cooperate with each other, and has a simple and stable structure, occupies less space and has low cost.

[0135] In some embodiments, the first measuring component 40 also includes a first limit member 44, which is movably connected to the fixed seat 41, and the first limit member 44 is configured to limit the rotation of the screw 431 or release the restriction on the rotation of the screw 431 based on its own activity under the action of external force.

[0136] For example, when the measuring member 42 measures the roll diameter of the strip 100 on the reel 20 at a specific position, the first stopper 44 limits the rotation of the screw 431 to keep the measuring member 42 stable and reduce the measurement error. When the measuring member 42 needs to be moved, the first stopper 44 releases the restriction on the rotation of the screw 431 through the action of external force, so that the measuring member 42 can be restored to a movable state, so that the operator can move the measuring member 42. The external force can be applied manually by the operator or by a driving member, such as a solenoid valve or an electric cylinder.

[0137] In some examples, the first stopper 44 is inserted into and matched with the screw 431 to limit the rotation of the screw 431. For example, a brake pin is provided on the first stopper 44, and a slot matching the brake pin is provided at one end of the screw 431 along its own axis. When the brake pin is inserted into the slot, the rotation of the screw 431 can be limited, and when the brake pin is separated from the slot, the restriction on the rotation of the screw 431 is released.

[0138] In some examples, the first limiting member 44 clamps the screw rod 431 to limit the rotation of the screw rod 431. For example, the first limiting member 44 is provided with a clamping claw, which can limit the rotation of the screw rod 431 when clamped on the screw rod 431, and release the restriction on the rotation of the screw rod 431 when the clamping claw is released.

[0139] The above technical solution introduces the first limiter 44. When the measuring member 42 measures the winding diameter of the strip 100 located on the reel 20 at a specific position, the first limiter 44 can limit the rotation of the screw 431 to keep the measuring member 42 stable and reduce the measurement error.

[0140] In some embodiments, the first limiting member 44 includes a limiting portion and a spring, the limiting portion is rotatably connected to the fixing seat 41 to form a lever structure, the limiting portion includes a first end and a second end that are relatively arranged along the force arm direction of the lever structure, a brake pin is arranged on the first end, the spring is connected between the fixing seat 41 and the second end, a slot matching the brake pin is arranged at one end of the screw rod 431 along its own axial direction, and the spring is used to apply a force to the second end away from the fixing seat 41, so that when no external force is applied to the second end, the brake pin is inserted into the slot to limit the rotation of the screw rod 431. When an external force is applied to the second end to overcome the elastic force applied by the spring, the brake pin is disengaged from the slot to release the restriction on the rotation of the screw rod 431.

[0141] In some embodiments, the first moving component 43 further includes a hand wheel, which is connected to one end of the screw rod 431 along its own axis, so that the operator can drive the screw rod 431 to rotate by turning the hand wheel. The first limiter 44 also includes a pull rope, one end of which is connected to the second end, and the other end of the pull rope extends in a direction away from the second end to the position of the hand wheel. The operator can apply an external force to the second end through the pull rope to overcome the elastic force applied by the spring. In this way, by arranging the operating end of the pull rope adjacent to the hand wheel, the operation of the operator can be greatly facilitated, and the convenience of use of the first measuring component 40 is improved.

[0142] In some embodiments, the first measuring component 40 is disposed on the reel 20 and spaced apart in the vertical direction, and the first measuring component 40 is located above the reel 20, and the first moving component 43 is used to drive the measuring member 42 to move in the vertical direction.

[0143] The first measuring assembly 40 adopts a suspended structure to be located above the reel 20, which can reduce the occupied ground space and improve the overall structural compactness of the unwinding device.

[0144] In some embodiments, the first measuring component 40 also includes a second movable component 45, the second movable component 45 is connected to the first movable component 43, the measuring component 42 is connected to the second movable component 45, the second movable component 45 is used to drive the measuring component 42 to rotate, and the rotation axis of the measuring component 42 is parallel to the axis of the reel 20.

[0145] The second moving part 45 is used to drive the measuring member 42 to rotate, so as to improve the adjustability of the measuring angle of the measuring member 42. For example, the measuring angle of the measuring member 42 can be adjusted by the second moving part 45, so that the measuring member 42 is at a better measuring angle.

[0146] The second moving component 45 may be directly connected to the first moving component 43, or may be restricted on the first moving component 43 through other components. Optionally, the second moving component 45 includes but is not limited to a servo motor, a worm gear mechanism, a pneumatic rotary cylinder or a hydraulic rotator, etc.

[0147] The above technical solution further introduces the second movable component 45 so that the measuring member 42 can be rotated to adapt to various measurement requirements to maintain the best measurement angle, thereby helping to further improve the applicability and measurement accuracy of the measuring member 42.

[0148] In some embodiments, the second movable component 45 is rotatably connected to the first movable component 43 , and the rotation axis of the second movable component 45 is parallel to the axis of the reel 20 .

[0149] The second movable component 45 can rotate relative to the first movable component 43 . The measuring component 42 is fixedly connected to the second movable component 45 . The second movable component 45 rotates itself to synchronously drive the measuring component 42 to rotate.

[0150] Exemplarily, the second movable part 45 is rotatably connected to the first movable part 43 via a rotating member. Exemplarily, the rotating member can be provided on the first movable part 43, and a matching member corresponding to the rotating member is provided on the second movable part 45, and the rotating member cooperates with the matching member to realize the rotational connection between the second movable part 45 and the first movable part 43; the rotating member can be provided on the second movable part 45, and a matching member corresponding to the rotating member is provided on the first movable part 43, and the rotating member cooperates with the matching member to realize the rotational connection between the second movable part 45 and the first movable part 43. Among them, the rotating member can be but not limited to a pin shaft, a rotating shaft or a rotating disk, and the matching member can be but not limited to a pin hole, a through hole or a bearing, etc.

[0151] In some examples, a pin is provided on the second movable component 45 , and an arc hole matching the pin is provided on the connecting member 432 . The pin cooperates with the arc hole to achieve a rotational connection between the second movable component 45 and the connecting member 432 .

[0152] The above technical solution configures the second movable component 45 itself as a rotatable structure to synchronously drive the measuring component 42 to rotate during its own rotation. The structure is simple, and the overall structural complexity of the first measuring component 40 can be reduced, which helps to reduce costs.

[0153] In some embodiments, the first measuring component 40 also includes a second limit member, which is movably connected to the fixed seat 41, and the second limit member is configured to limit the rotation of the second movable component 45 or release the restriction on the rotation of the second movable component 45 based on its own activity under the action of external force.

[0154] For example, when the measuring member 42 measures the roll diameter of the strip 100 on the reel 20 at a specific position, the second stopper limits the rotation of the second movable member 45 to keep the measuring member 42 stable and reduce the measurement error. When the measuring member 42 needs to be rotated, the second stopper releases the restriction on the rotation of the second movable member 45 through the action of external force, so that the measuring member 42 returns to a rotatable state, so that the operator can rotate the measuring member 42. The external force can be applied manually by the operator or by a driving member, such as a solenoid valve or an electric cylinder.

[0155] In some examples, the second limiter is engaged with the second movable part 45 to limit the rotation of the second movable part 45. For example, a brake buckle is provided on the second limiter, and the brake buckle can limit the rotation of the second movable part 45 when it is engaged with one side of the second movable part 45 along its own rotation path, and the brake buckle is released from the second movable part 45 to release the restriction on the rotation of the second movable part 45.

[0156] In some examples, the second limiting member clamps the second movable member 45 to limit the rotation of the second movable member 45. For example, the second limiting member is provided with a clamping claw, which can limit the rotation of the second movable member 45 when clamped on the second movable member 45, and releases the restriction on the rotation of the second movable member 45 when the clamping claw is released.

[0157] The above technical solution introduces a second limiter. When the measuring member 42 measures the winding diameter of the strip 100 on the reel 20 at a specific position, the second limiter can limit the rotation of the second movable member 45 to keep the measuring member 42 stable and reduce the measurement error.

[0158] In some embodiments, the unwinding device further includes a roll-changing mechanism 80 and a controller 90. The roll-changing mechanism 80 is connected to the first mounting frame 10. There are multiple reels 20, and the multiple reels 20 are connected to the roll-changing mechanism 80. The controller 90 is connected to the first measuring component 40 and the roll-changing mechanism 80. The roll-changing mechanism 80 is used to drive the multiple reels 20 to move to the preset positions in sequence, and the reels 20 located at the preset positions are used to unwind the strip material 100. The controller 90 is used to send a roll-changing signal to the roll-changing mechanism 80 when the target roll diameter reaches the trigger value. The roll-changing mechanism 80 responds to the roll-changing signal and drives another reel 20 to move to the preset position.

[0159] Exemplarily, the number of the reels 20 may be two, three, four or more, which may be selected according to the actual application environment.

[0160] Taking the case where two reels 20 are provided as an example, the roll-changing mechanism 80 may include a machine base and a rod body, the machine base is installed on the ground, the rod body is rotatably installed on the machine base, the two reels 20 are respectively connected to the two ends of the rod body, when the unwinding device is in working state, one of the reels 20 is in a preset position, and after the roll-changing mechanism 80 receives the roll-changing signal, the rod body rotates to move the other reel 20 to the preset position.

[0161] The above technical solution introduces a roll-changing mechanism 80. When the target roll diameter reaches the trigger value, the roll 20 can be automatically and quickly replaced by controlling the roll-changing mechanism 80, so that the roll 20 with a new full material belt is moved to the preset position for unwinding, thereby optimizing the roll-changing process and helping to improve the overall production efficiency and continuity.

[0162] Figure 6 A schematic flow chart of a tail material detection method for an unwinding device provided in some embodiments of the present application.

[0163] Continue to refer Figure 6 According to some embodiments of the present application, the present application also provides a tail material detection method for an unwinding device, and the tail material detection method for an unwinding device includes step 601 and step 602.

[0164] Step 601, when the reel 20 is installed on the first mounting frame 10, control the reel 20 to unwind the tape 100;

[0165] Step 602, when the first measuring component 40 is installed on the second mounting frame 30, control the first measuring component 40 to measure the winding diameter of the strip 100 to obtain the first winding diameter of the strip 100, the first winding diameter is used to determine the target winding diameter, and the target winding diameter is used to determine whether to replace the strip 100, wherein the second mounting frame 30 is spaced apart from the first mounting frame 10, and the first measuring component 40 is connected to the second mounting frame 30 and is arranged toward the reel 20.

[0166] Specifically, the above-mentioned reel 20 can be a reel 20 of various types of strips 100. When the reel 20 is installed on the first mounting frame 10, the reel 20 can be controlled to stably unwind the strip. For example, the strip 100 of the pole piece can be provided during the production process of the pole piece.

[0167] During the unwinding process, the first measuring component 40 can detect the coil diameter of the strip 100, that is, the first coil diameter, in real time. By analyzing the first coil diameter, it can be determined whether the strip 100 needs to be replaced. For example, if the first coil diameter is too small, it means that the strip 100 is about to run out, so the strip 100 needs to be replaced.

[0168] Optionally, the first winding diameter can be directly used as the target winding diameter, which is used to indicate the remaining amount of the tape and is used as a basis for determining whether the tape 100 needs to be replaced, so that the tape 100 can be replaced in time when the winding diameter of the tape 100 is too small.

[0169] Exemplarily, a trigger value can be preset to determine whether the coil diameter of the strip 100 is too small. For example, when the target coil diameter reaches the trigger value, another reel 20 with a new full strip of material can be quickly replaced and unwound, thereby reducing the replacement interval of the strip 100, achieving timely reel change, and improving the continuity of the overall production.

[0170] The specific details and configuration of the first mounting frame 10 and the second mounting frame 30 can be referred to the introduction of the unwinding device in the embodiment of the present application, and will not be repeated here for the sake of brevity.

[0171] The above technical solution isolates the force conduction between the reel 20 and the first measuring component 40 by respectively arranging the reel 20 and the first mounting frame 30 which are spaced apart. Thus, the influence of the vibration generated by the reel 20 during the process of unwinding the strip 100 on the first measuring component 40 can be reduced, so that the first measuring component 40 has a smaller error in detecting the winding diameter of the strip 100, thereby improving the measurement accuracy of the winding diameter of the strip of the unwinding device.

[0172] In some embodiments, the tail material detection method of the unwinding device further includes:

[0173] The running length of the tape 100 is measured by the second measuring component 50, wherein the second measuring component 50 is connected to the reel 20;

[0174] The target winding diameter is determined according to the tape running length measured by the second measuring component 50 and the first winding diameter measured by the first measuring component 40 .

[0175] Specifically, there is a conversion relationship between the running length of the tape 100 and the remaining amount of the tape, so the running length measured in real time by the second measuring component 50 can also be used to obtain a remaining amount of the tape. For ease of distinction, the remaining amount of the tape determined based on the running length is described as the second remaining amount of the tape, and the first coil diameter measured by the first measuring component 40 is described as the first remaining amount of the tape.

[0176] As a specific example, there is a conversion relationship between the running length of the tape 100 and the change in the tape diameter, so the running length of the tape 100 measured by the second measuring component 50 can be converted into the change in the tape diameter. It can be understood that the change in the tape diameter can refer to the reduced diameter of the tape 100. Based on this, the remaining amount of the second tape can be determined in real time according to the diameter of the tape 100 when it is not unwound and the reduced diameter of the tape 100.

[0177] Optionally, after obtaining the two remaining amounts of the strip material, the first remaining amount of the strip material and the second remaining amount of the strip material can be compared, and the larger one of the two can be taken as the target coil diameter. Alternatively, the average of the first remaining amount of the strip material and the second remaining amount of the strip material can be taken as the target coil diameter, or the target coil diameter can be determined based on the first remaining amount of the strip material and the second remaining amount of the strip material by other statistical algorithms, which are not listed here one by one.

[0178] The above technical solution collaboratively processes the measurement data of the first measuring component 40 and the second measuring component 50, so as to collaboratively determine the target winding diameter by utilizing the first winding diameter measured by the first measuring component 40 and the tape running length measured by the second measuring component 50. This can reduce the influence of the measurement error of a single measuring component on the overall measurement accuracy, thereby further improving the measurement accuracy of the winding diameter of the unwinding device.

[0179] In some embodiments, the step of determining the target winding diameter according to the running length measured by the second measuring component 50 and the first winding diameter measured by the first measuring component 40 may specifically refer to the following steps 701 to 706 .

[0180] Step 701, after the first winding diameter measured by the first measuring component 40 reaches the target value, the sensing component 70 is controlled to detect the number of unwinding turns of the strip 100, wherein the sensing component 70 generates a detection instruction when detecting that the number of unwinding turns reaches a multiple of C, where C is a preset positive integer.

[0181] Step 702 , obtaining a detection instruction issued by the sensing component 70 .

[0182] Step 703 , in response to receiving N detection instructions, performing N correction processes on the first coiling diameter to obtain N corrected first coiling diameters, where N is a positive integer.

[0183] In step 703, for the nth correction processing, the method for obtaining the nth corrected first winding diameter can specifically refer to the following steps: in response to the nth detection instruction, obtain the nth measured winding diameter obtained by the first measuring component 40 for the nth measurement, and obtain the nth running length obtained by the second measuring component 50 for the nth measurement, wherein n∈N; convert the nth running length into the nth winding diameter; determine the nth corrected first winding diameter according to the sum of the nth measured winding diameter and the nth winding diameter.

[0184] Step 704, calculating an average value of the N corrected first coiling diameters to obtain a corrected coiling diameter.

[0185] Step 705 , obtaining the total tape running length after the first winding diameter measured by the first measuring component 40 reaches the target value by the second measuring component 50 , and converting the total tape running length into the second winding diameter.

[0186] Step 706: Determine the target rolling diameter according to the difference between the corrected rolling diameter and the second rolling diameter.

[0187] For example, the first measuring component 40 may be a non-contact laser sensor, and the second measuring component 50 may be an encoder.

[0188] Specifically, the target value can be a preset value and can be set according to actual application requirements. For example, the target value h0 is set to 20 mm. In this way, after determining that the remaining amount of the web exceeds the optimal measurement range of the first measuring component 40, the target coil diameter can be determined based on the above steps, thereby reducing the error between the target coil diameter and the actual coil diameter, saving as much web material as possible 100 and reducing costs.

[0189] After the first winding diameter measured by the first detection component reaches the target value, the sensing component 70 can be controlled to synchronously start the detection of the number of unwinding turns of the strip 100. The number of unwinding turns detected by the sensing component 70 can be sent to the processor 60 in real time, or the current number of unwinding turns can be synchronized to the processor 60 by sending preset instructions.

[0190] Optionally, after the first winding diameter measured by the first detection component reaches the target value, the second measurement component 50 may be started synchronously to detect the tape running length in real time.

[0191] Optionally, the induction component 70 may include a logic operation element, based on which it may be configured to generate a detection instruction when it is detected that the number of unwinding turns reaches a multiple of C. Taking C=5 as an example, when the number of unwinding turns is a multiple of 5 such as 5, 15 or 25, a detection instruction will be generated.

[0192] Each time the processor 60 receives a detection instruction, it can obtain a tape roll diameter measured by the first measuring component 40 and a tape running length measured by the second measuring component 50, and generate a corrected roll diameter based on the tape roll diameter and the tape running length.

[0193] Based on this, the processor 60 receives N detection instructions and can generate N corrected winding diameters, for example, h01, h02, ..., h0N. The specific value of N can be determined according to actual conditions, for example, according to the initial winding number of the strip 100 on the reel 20, and the product of the correction number N and the unwinding number C can be less than the initial winding number of the strip 100 on the reel 20.

[0194] Optionally, the final corrected roll diameter can be obtained by calculating the average of h01, h02, ..., h0N .

[0195] After obtaining the final corrected roll diameter After that, the processor 60 will again obtain the total running length of the tape after the first winding diameter measured by the second measuring component 50 in the first measuring component 40 reaches the target value h0. Based on the total running length and the preset conversion relationship, a change in the winding diameter of the tape after the first winding diameter measured by the first measuring component 40 reaches the target value h0 can be determined, that is, the change in the second winding diameter. , represents the reduction in the coil diameter of the strip 100 after the first coil diameter measured by the first measuring component 40 reaches the target value h0.

[0196] When the processor 60 receives N detection instructions, it will obtain a tape length measured by the second measuring component 50 again, that is, the tape length measured by the second measuring component 50 when the number of detection instructions issued reaches N. Based on the tape length and the preset conversion relationship, a change in the tape roll diameter can be determined. , that is, the reduction in the coil diameter of the strip 100.

[0197] Therefore, the corrected roll diameter is calculated and the second roll diameter The difference between the corrected roll diameter and the second roll diameter can be calculated using formula (1).

[0198] (1)

[0199] in, is the target roll diameter.

[0200] Exemplarily, the first correction is taken as an example to introduce each correction process.

[0201] When the number of unwinding turns of the induction component 70 is 5, the processor 60 receives the first detection instruction. At this time, the processor obtains the tape roll diameter h1 measured by the first measuring component 40, and the tape running length LB1 measured by the second measuring component 50, and obtains a change in the tape roll diameter according to the tape running length LB1 through the conversion relationship as shown in formula (2). .

[0202] (2)

[0203] Wherein, h0 is the target value, d is the diameter of the reel 20 , and T is the thickness of the strip 100 .

[0204] In formula (2), since only the change in the strip coil diameter is an unknown quantity, so the change in the strip coil diameter can be accurately calculated .

[0205] It should be noted that formula (2) is only an example of a preset conversion relationship. Of course, other known calculation methods can be used to convert the tape length LB1 into the change in the tape roll diameter, which will not be repeated here.

[0206] After obtaining the change in the coil diameter of the strip, the first corrected coil diameter h01 can be calculated using formula (3).

[0207] (3)

[0208] The second corrected winding diameter h02, ..., and the Nth corrected winding diameter h0N are obtained by the same calculation method as the first corrected winding diameter h01, which will not be repeated here.

[0209] The above technical scheme can not only calibrate and correct the measurement data of the first measuring component 40 according to the measurement data of the second measuring component 50 to reduce the measurement error of the first measuring component 40, but also use the different measurement characteristics of the first measuring component 40 and the second measuring component 50 to collaboratively determine the target coil diameter in stages, thereby greatly improving the measurement accuracy of the coil diameter of the unwinding device.

[0210] In some embodiments, the tail material detection method of the unwinding device also includes: when the target roll diameter reaches the trigger value, sending a roll changing signal to the roll changing mechanism 80 through the controller 90, wherein the controller 90 is connected to the first measuring component 40 and the roll changing mechanism 80, the roll changing mechanism 80 is connected to the first mounting frame 10, and the roll changing mechanism 80 is connected to multiple reels 20; driving another reel 20 to move to a preset position through the roll changing mechanism 80, wherein the reel 20 located at the preset position is used to unwind the strip 100.

[0211] Exemplarily, the number of the reels 20 may be two, three, four or more, which may be selected according to the actual application environment.

[0212] The above technical solution introduces a roll-changing mechanism 80. When the target roll diameter reaches the trigger value, the roll 20 can be automatically and quickly replaced by controlling the roll-changing mechanism 80, so that the roll 20 with a new full material belt is moved to the preset position for unwinding, thereby optimizing the roll-changing process and helping to improve the overall production efficiency and continuity.

[0213] According to some embodiments of the present application, the present application also provides a battery production equipment, including an unwinding device of any of the above schemes.

[0214] If not otherwise specified, all implementations and optional implementations of the present application can be combined with each other to form a new technical solution. All technical features and optional technical features of the present application can be combined with each other to form a new technical solution.

[0215] In order to better understand the unwinding device provided in the embodiment of the present application, based on the same inventive concept, an embodiment of the above-mentioned unwinding device in practical application is provided here for illustration.

[0216] The embodiment of the present application provides an unwinding device, which includes a first mounting frame 10, a reel 20, a second mounting frame 30, a first measuring component 40, a second measuring component 50, a processor 60, a sensing component 70, a roll-changing mechanism 80, and a controller 90. The reel 20 is connected to the first mounting frame 10, and the reel 20 is used to install and unwind the strip 100. The second mounting frame 30 is spaced apart from the first mounting frame 10. The first measuring component 40 is connected to the second mounting frame 30 and is arranged toward the reel 20. The first measuring component 40 is used to measure the roll diameter of the strip 100 located on the reel 20, and obtain the first roll diameter of the strip 100, the first roll diameter is used to determine the target roll diameter, and the target roll diameter is used to determine whether to replace the strip 100.

[0217] The processor 60 is connected to the first measuring component 40 and the second measuring component 50. The second measuring component 50 is connected to the reel 20 and is used to measure the running length of the tape 100. The processor 60 is used to determine the target reel diameter according to the first reel diameter measured by the first measuring component 40 and the running length measured by the second measuring component 50.

[0218] The sensing component 70 is used to detect the number of unwinding turns of the tape 100 after the first winding diameter measured by the first measuring component 40 reaches the target value, and issue a detection instruction. The processor 60 is also used to: in response to the detection instruction, correct the first winding diameter measured by the first measuring component 40 according to the running length measured by the second measuring component 50 to obtain a corrected winding diameter; obtain the total running length of the tape after the first winding diameter measured by the second measuring component 50 reaches the target value in real time, and convert the total running length into the second winding diameter according to a preset conversion relationship; determine the target winding diameter according to the difference between the corrected winding diameter and the second winding diameter.

[0219] The roll changing mechanism 80 is connected to the first mounting frame 10, and the number of the reels 20 is multiple, and the multiple reels 20 are connected to the roll changing mechanism 80. The controller 90 is connected to the first measuring assembly 40 and the roll changing mechanism 80. The roll changing mechanism 80 is used to drive the multiple reels 20 to move to the preset positions in sequence, and the reels 20 located at the preset positions are used to unwind the strip material 100. The controller 90 is used to send a roll changing signal to the roll changing mechanism 80 when the target roll diameter reaches the trigger value, and the roll changing mechanism 80 responds to the roll changing signal and drives another reel 20 to move to the preset position.

[0220] The first measuring assembly 40 includes a fixed seat 41, a measuring member 42, a first moving member 43, a first stop member 44 and a second moving member 45. The fixed seat 41 is connected to the second mounting frame 30. The measuring member 42 is movably connected to the fixed seat 41. The measuring member 42 is used to measure the winding diameter of the strip 100 on the reel 20. The first moving member 43 is connected to the fixed seat 41, and the measuring member 42 is connected to the first moving member 43. The first measuring assembly 40 is arranged at intervals on the reel 20 in the vertical direction, and the first measuring assembly 40 is located above the reel 20. The first moving member 43 is used to drive the measuring member 42 to move in the vertical direction. The first movable member 43 includes a screw 431 and a connecting member 432. The screw 431 is rotatably connected to the fixed seat 41, and the screw 431 is configured to be able to rotate around its own axis. The connecting member 432 is movably connected to the screw 431, and the connecting member 432 is configured to be able to convert the rotation of the screw 431 into its own linear motion along the axial direction of the screw 431. The measuring member 42 is connected to the connecting member 432. The first limiter 44 is movably connected to the fixed seat 41, and the first limiter 44 is configured to be able to limit the rotation of the screw 431 or release the restriction on the rotation of the screw 431 based on its own activity under the action of external force. The second movable member 45 is rotatably connected to the first movable member 43, and the rotation axis of the second movable member 45 is parallel to the axis of the reel 20. The measuring member 42 is connected to the second movable member 45.

[0221] The above technical scheme can not only calibrate and correct the measurement data of the first measuring component 40 according to the measurement data of the second measuring component 50 to reduce the measurement error of the first measuring component 40, but also use the different measurement characteristics of the first measuring component 40 and the second measuring component 50 to collaboratively determine the target coil diameter in stages, thereby greatly improving the measurement accuracy of the coil diameter of the unwinding device.

[0222] The present application also provides a method for detecting tail material of an unwinding device, and the method for detecting tail material of an unwinding device includes steps 601 to 610.

[0223] Step 601, when the reel 20 is installed on the first mounting frame 10, control the reel 20 to unwind the tape 100;

[0224] Step 602, when the first measuring assembly 40 is installed on the second mounting frame 30, the first measuring assembly 40 is controlled to measure the winding diameter of the strip 100 to obtain a first winding diameter of the strip 100, the first winding diameter is used to determine a target winding diameter, and the target winding diameter is used to determine whether to replace the strip 100, wherein the second mounting frame 30 is spaced apart from the first mounting frame 10, and the first measuring assembly 40 is connected to the second mounting frame 30 and is arranged toward the reel 20;

[0225] Step 603, measuring the running length of the tape 100 by the second measuring component 50, wherein the second measuring component 50 is connected to the reel 20;

[0226] Step 604, after the first winding diameter measured by the first measuring component 40 reaches the target value, the sensing component 70 is controlled to detect the number of unwinding turns of the strip 100, wherein the sensing component 70 generates a detection instruction when detecting that the number of unwinding turns reaches a multiple of C, where C is a preset positive integer.

[0227] Step 605 , obtaining a detection instruction issued by the sensing component 70 .

[0228] Step 606 , in response to receiving N detection instructions, performing N correction processes on the first coiling diameter to obtain N corrected first coiling diameters, where N is a positive integer.

[0229] In step 606, for the nth correction processing, the method for obtaining the nth corrected first winding diameter can specifically refer to the following steps: in response to the nth detection instruction, obtain the nth measured winding diameter obtained by the first measuring component 40 for the nth measurement, and obtain the nth running length obtained by the second measuring component 50 for the nth measurement, wherein n∈N; convert the nth running length into the nth winding diameter; determine the nth corrected first winding diameter according to the sum of the nth measured winding diameter and the nth winding diameter.

[0230] Step 607, calculating an average value of the N corrected first coiling diameters to obtain a corrected coiling diameter.

[0231] Step 608 , obtaining the total tape running length after the first winding diameter measured by the first measuring component 40 reaches the target value by the second measuring component 50 , and converting the total tape running length into the second winding diameter.

[0232] Step 608: determining the target rolling diameter according to the difference between the corrected rolling diameter and the second rolling diameter.

[0233] Step 609, when the target roll diameter reaches the trigger value, a roll changing signal is sent to the roll changing mechanism 80 through the controller 90, wherein the controller 90 is connected to the first measuring assembly 40 and the roll changing mechanism 80, the roll changing mechanism 80 is connected to the first mounting frame 10, and the roll changing mechanism 80 is connected to the plurality of rolls 20;

[0234] Step 610 , driving another reel 20 to move to a preset position via the reel changing mechanism 80 , wherein the reel 20 located at the preset position is used to unwind the strip material 100 .

[0235] The above technical solution can not only calibrate and correct the measurement data of the first measurement component 40 according to the measurement data of the second measurement component 50 to reduce the measurement error of the first measurement component 40, but also can use the different measurement characteristics of the first measurement component 40 and the second measurement component 50 to collaboratively determine the target roll diameter in stages, thereby greatly improving the measurement accuracy of the roll diameter of the unwinding device. In addition, when the target roll diameter reaches the trigger value, the roll 20 can be automatically and quickly replaced by controlling the roll changing mechanism 80, so that the roll 20 with a new full material strip is moved to the preset position for unwinding, which optimizes the roll changing process and is conducive to improving the overall production efficiency and continuity.

[0236] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A reeling device, characterized in that: include: first mounting frame; A reel connected to the first mounting frame, the reel being used to install and unwind the tape; A second mounting frame, spaced apart from the first mounting frame; a first measuring assembly connected to the second mounting frame and disposed toward the reel, the first measuring assembly being used to measure the reel diameter of the strip on the reel and obtain a first reel diameter of the strip, the first reel diameter being used to determine a target reel diameter, and the target reel diameter being used to determine whether to replace the strip; Wherein, the unwinding device further comprises a second measuring component and a processor, and the processor is connected to the first measuring component and the second measuring component; The second measuring component is connected to the reel and is used to measure the running length of the tape, and the processor is used to determine the target reel diameter according to the first reel diameter measured by the first measuring component and the running length measured by the second measuring component; The unwinding device further includes a sensing component, which is used to detect the number of unwinding turns of the strip after the first coil diameter measured by the first measuring component reaches a target value, and issue a detection instruction when the number of unwinding turns reaches a multiple of C, wherein C is a preset positive integer; The second measuring component is used to start measuring the running length of the tape in real time after the first coil diameter measured by the first measuring component reaches a target value; The processor is further configured to control the sensing component to detect the number of unwinding turns of the strip material after the first coil diameter measured by the first measuring component reaches a target value; obtain a detection instruction issued by the sensing component; and in response to receiving N detection instructions, perform N correction processes on the first coil diameter to obtain N corrected first coil diameters, wherein the first coil diameter is the coil diameter when the coil diameter measured by the first measuring component reaches the target value, and each corrected first coil diameter is a coil diameter value obtained by correcting the first coil diameter, and N is a positive integer; Wherein, for the nth correction processing, obtaining the nth corrected first winding diameter includes: in response to the nth detection instruction, obtaining the nth measured winding diameter obtained by the first measuring component for the nth time, and obtaining the nth running length obtained by the second measuring component for the nth time, wherein n∈N; converting the nth running length into the nth winding diameter; determining the nth corrected first winding diameter according to the sum of the nth measured winding diameter and the nth winding diameter; The processor is further configured to calculate an average value of N corrected first winding diameters to obtain a corrected winding diameter; obtain in real time a total tape running length measured by the second measuring component after the first winding diameter measured by the first measuring component reaches the target value, and convert the total tape running length into a second winding diameter according to a preset conversion relationship; and determine the target winding diameter according to a difference between the corrected winding diameter and the second winding diameter.

2. The unwinding device according to claim 1, characterized in that: The first measuring assembly includes a fixed seat and a measuring piece, the fixed seat is connected to the second mounting frame, the measuring piece is movably connected to the fixed seat, and the measuring piece is used to measure the winding diameter of the strip material on the reel.

3. The unwinding device according to claim 2, characterized in that: The first measuring assembly also includes a first moving component, the first moving component is connected to the fixed seat, the measuring piece is connected to the first moving component, and the first moving component is used to drive the measuring piece to move closer to or away from the reel.

4. The unwinding device according to claim 3, characterized in that: The first movable component includes a screw and a connecting piece, wherein the screw is rotatably connected to the fixed seat and is configured to be able to rotate around its own axis, the connecting piece is movably connected to the screw, and the connecting piece is configured to be able to convert the rotation of the screw into its own linear motion along the axial direction of the screw, and the measuring piece is connected to the connecting piece.

5. The unwinding device according to claim 4, characterized in that: The first measuring component also includes a first limiter, which is movably connected to the fixing seat, and the first limiter is configured to limit the rotation of the screw rod or release the restriction on the rotation of the screw rod based on its own movement under the action of external force.

6. The unwinding device according to claim 3, characterized in that: The first measuring component is arranged on the reel at an interval in the vertical direction, and the first measuring component is located above the reel, and the first moving component is used to drive the measuring member to move in the vertical direction.

7. The unwinding device according to claim 3, characterized in that: The first measuring component also includes a second movable part, the second movable part is connected to the first movable part, the measuring piece is connected to the second movable part, the second movable part is used to drive the measuring piece to rotate, and the rotation axis of the measuring piece is parallel to the axis of the reel.

8. The unwinding device according to claim 7, characterized in that: The second moving component is rotatably connected to the first moving component, and a rotation axis of the second moving component is parallel to an axis of the reel.

9. The unwinding device according to any one of claims 1 to 8, characterized in that: The unwinding device further comprises a roll-changing mechanism and a controller, wherein the roll-changing mechanism is connected to the first mounting frame, the number of the rolls is multiple, the multiple rolls are connected to the roll-changing mechanism, and the controller is connected to the first measuring component and the roll-changing mechanism; The reel changing mechanism is used to drive the plurality of reels to move to preset positions in sequence, and the reels located at the preset positions are used to unwind the strip; The controller is used for sending a roll-changing signal to the roll-changing mechanism when the target roll diameter reaches a trigger value, and the roll-changing mechanism responds to the roll-changing signal and drives another of the rolls to move to the preset position.

10. A method for detecting tail material of an unwinding device, characterized in that: The detection method comprises: When the reel is mounted on the first mounting frame, controlling the reel to unwind the tape; In the case where the first measuring assembly is mounted on the second mounting frame, the first measuring assembly is controlled to measure the winding diameter of the strip material to obtain a first winding diameter of the strip material, wherein the first winding diameter is used to determine a target winding diameter, and the target winding diameter is used to determine whether to replace the strip material, wherein the second mounting frame is spaced apart from the first mounting frame, and the first measuring assembly is connected to the second mounting frame and is disposed toward the reel; Wherein, the detection method further comprises: Measuring the running length of the tape by a second measuring component, wherein the second measuring component is connected to the reel; Determining the target winding diameter according to the tape running length measured by the second measuring component and the first winding diameter measured by the first measuring component; The step of determining the target winding diameter according to the tape running length measured by the second measuring component and the first winding diameter measured by the first measuring component specifically includes: After the first coil diameter measured by the first measuring component reaches the target value, the number of unwinding turns of the strip is detected by the sensing component, and a detection instruction is issued when the number of unwinding turns reaches a multiple of C, where C is a preset positive integer; After the first coil diameter measured by the first measuring component reaches a target value, the sensing component is controlled to detect the number of unwinding turns of the strip; Obtaining a detection instruction issued by the sensing component; In response to receiving N detection instructions, performing N correction processes on the first coil diameter to obtain N corrected first coil diameters, wherein the first coil diameter is the coil diameter when the coil diameter measured by the first measuring component reaches a target value, each corrected first coil diameter is a coil diameter value obtained by correcting the first coil diameter, and N is a positive integer; Among them, for the nth correction processing, the method for obtaining the nth corrected first winding diameter includes: in response to the nth detection instruction, obtaining the nth measured winding diameter obtained by the first measuring component for the nth time, and obtaining the nth running length obtained by the second measuring component for the nth time, wherein n∈N; converting the nth running length into the nth winding diameter; determining the nth corrected first winding diameter according to the sum of the nth measured winding diameter and the nth winding diameter; Calculating an average value of N corrected first coil diameters to obtain a corrected coil diameter; acquiring in real time the total tape running length measured by the second measuring component after the first winding diameter measured by the first measuring component reaches the target value, and converting the total tape running length into the second winding diameter; The target winding diameter is determined according to the difference between the corrected winding diameter and the second winding diameter.

11. The tail material detection method of the unwinding device according to claim 10, characterized in that: The detection method further comprises: When the target roll diameter reaches the trigger value, a roll changing signal is sent to a roll changing mechanism through a controller, wherein the controller is connected to the first measuring component and the roll changing mechanism, the roll changing mechanism is connected to the first mounting frame, and the roll changing mechanism is connected to the plurality of rolls; The reel changing mechanism drives another of the reels to move to a preset position, wherein the reel located at the preset position is used to unwind the strip material.

12. A battery production device, characterized in that: It comprises an unwinding device as described in any one of claims 1 to 9.

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