Electric permanent magnet uncoiling equipment

Abstract

The utility model discloses electro-permanent magnet uncoiling equipment, and relates to the field of production equipment, and the electro-permanent magnet uncoiling equipment comprises a driving main body, an electro-permanent magnet body and an electric brush assembly; the electric permanent magnet body comprises a main body plate and a plurality of annular electric permanent magnet assemblies; the multiple annular electric permanent magnet assemblies have different inner diameters and are sequentially and coaxially arranged in a sleeving mode in the radial direction of the main body plate. Partitioned adsorption control can be achieved by starting and stopping one or more annular electric permanent magnet assemblies, all the annular electric permanent magnet assemblies are started when the steel coil is just uncoiled, and as the uncoiling time of the steel coil is advanced, the annular electric permanent magnet assemblies on the outer side of the corresponding steel coil are shut down; the folding condition caused by interlayer sliding of the steel coil due to large inertia can be effectively avoided, the annular electric permanent magnet assemblies on the outer ring are demagnetized in sequence along with reduction of the inner diameter of the steel coil after operation, and the annular electric permanent magnet assemblies are not started any more in the uncoiling process, so that the situation that a steel belt is scratched due to the influence of magnetic force in the uncoiling process is avoided.

Description

Technical Field

[0001] This application relates to the field of production equipment, and particularly to an electro-permanent magnetic uncoiler. Background Art

[0002] Steel strip coils are a common production material, which need to be used in conjunction with electro-permanent magnetic uncoiling equipment. The existing electro-permanent magnetic uncoiling equipment has the following problems: 1. During the uncoiling process, due to the excessive weight of the steel strip coil, it cannot be effectively fixed, resulting in a large inertia, causing interlayer sliding of the steel strip coil (i.e., axial relative sliding between two layers), and then leading to folding; 2. Because a large amount of magnesium powder is added during the high-temperature firing process of the steel strip coil, the magnesium powder will accumulate at one axial end during the vertical placement process, causing the cold-shrinking steel strip coil to tightly wrap the magnesium powder, resulting in uneven interlayer bonding force and forming a concave shape at the axial end face of the steel strip coil; 3. Due to the presence of magnesium powder doped in the previous process of the steel strip coil, the interlayer extrusion during the uncoiling process is unbalanced, and the central part of the steel strip coil is extruded out, resulting in damage to the strip coils on the side and central parts of the steel strip coil, serious waste, and greatly reducing the utilization rate of the strip coil. Summary of the Utility Model

[0003] The embodiments of this application provide an electro-permanent magnetic uncoiling equipment, which can avoid interlayer sliding and scratching of the steel coil.

[0004] This application provides an electro-permanent magnetic uncoiling equipment, including:

[0005] A driving main body, provided with a central shaft for driving the steel coil to rotate and uncoil;

[0006] An electro-permanent magnetic body, including a main body plate and a plurality of annular electro-permanent magnetic components for forming a magnetic adsorption surface on the first side of the main body plate; the main body plate and the central shaft are coaxially and fixedly connected; the plurality of annular electro-permanent magnetic components are coaxially arranged in the main body plate, the plurality of annular electro-permanent magnetic components have different inner diameters, and the plurality of annular electro-permanent magnetic components are coaxially sleeved in sequence along the radial direction of the main body plate;

[0007] A brush assembly, including a slip ring, a brush holder, a common terminal brush, and a power supply terminal brush; the slip ring is coaxially and fixedly arranged on the second side of the main body plate, the slip ring is provided with a plurality of annular metal grooves, one of the annular metal grooves is configured as a common terminal ring groove, and the remaining annular metal grooves are configured as power supply ring grooves; the common terminal brush is connected to the brush holder, and the common terminal brush contacts the common terminal ring groove; a plurality of power supply terminal brushes are all connected to the brush holder, and the power supply terminal brushes are in one-to-one contact with the power supply ring grooves;

[0008] The plurality of annular electro-permanent magnetic components are in one-to-one electrical connection with the power supply ring grooves; all the annular electro-permanent magnetic components are electrically connected to the common terminal ring groove.

[0009] Preferably, the driving body includes a power box, a power mechanism and a central shaft; the power mechanism is arranged in the power box; one end of the central shaft passes through the power box and is connected to the power mechanism; the power mechanism drives the central shaft to rotate; the brush holder is fixedly connected to the power box through a bracket.

[0010] Preferably, a wear-resistant plate is arranged on the magnetic attraction surface of the main body plate; the end surface of the wear-resistant plate facing the steel coil is configured as a conical surface, and the conical surface is in fitting contact with the axial end surface of the steel coil.

[0011] Preferably, a diameter sensor for detecting the change of the diameter of the steel coil is arranged on the wear-resistant plate.

[0012] Preferably, the annular electro-permanent magnet assembly includes a plurality of electro-permanent magnets arranged at intervals along the circumferential direction of the main body plate, and the exciting coils of the electro-permanent magnets are respectively electrically connected to the power supply ring groove and the common end ring groove.

[0013] Preferably, the electro-permanent magnet is arc-shaped, and its arc direction is the same as the circumferential direction of the main body plate.

[0014] Preferably, the annular electro-permanent magnet assembly with the smallest inner diameter further includes a plurality of auxiliary electro-permanent magnets, and mounting grooves corresponding to the auxiliary electro-permanent magnets one by one are arranged on the central shaft; the auxiliary electro-permanent magnets are arranged in the mounting grooves; the auxiliary electro-permanent magnets are respectively electrically connected to the power supply ring groove and the common end ring groove.

[0015] Preferably, the annular metal grooves on the slip ring are formed by surrounding the circumferential direction of the slip ring, and a plurality of annular metal grooves are arranged in the axial direction of the slip ring.

[0016] The electro-permanent magnet uncoiler of the present application has at least the following beneficial effects:

[0017] The electro-permanent magnet uncoiler of the present application forms a magnetic attraction surface on the first side of the main body plate through a plurality of annular electro-permanent magnet assemblies arranged on the main body plate. The magnetic attraction surface is used to adsorb the steel coil. The partition adsorption control can be realized by starting and stopping a certain or some annular electro-permanent magnet assemblies. In the present application, when the steel coil is just uncoiled, an external power supply supplies power to all the annular electro-permanent magnet assemblies through the power supply ring groove so that all the annular electro-permanent magnet assemblies are turned on. The central shaft and the main body plate drive the steel coil to move together through the magnetic force generated by the annular electro-permanent magnet assemblies. As the uncoiling time of the steel coil progresses, the inner diameter of the steel coil becomes smaller and smaller, and the annular electro-permanent magnet assemblies on the outer side of the corresponding steel coil are shut down. Such a design can make all the annular electro-permanent magnet assemblies of the electro-permanent magnet body be put into use at the beginning, and the magnetic force drives the steel coil to move together, effectively avoiding the situation of folding caused by the large inertia resulting in the interlayer sliding of the steel coil. After running, as the inner diameter of the steel coil decreases, the annular electro-permanent magnet assemblies on the outer ring are demagnetized in turn and are no longer used during this uncoiling process to avoid scratching of the steel strip caused by the magnetic force during the uncoiling process. Description of the Drawings

[0018] Upon reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of this application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0019] Figure 1 is an exploded schematic view of the electro-permanent magnet uncoiler of this application;

[0020] Figure 2 is a front view of the electro-permanent magnet uncoiler of this application (the wear-resistant plate is hidden);

[0021] Figure 3 is a schematic view of the backplane structure of the main body plate and the brush assembly;

[0022] Figure 4 is a radial sectional view of the brush assembly;

[0023] Figure 5 is a schematic view of the brush holder, common terminal brush, and power supply terminal brush;

[0024] Figure 6 is a control schematic diagram of the electro-permanent magnet uncoiler of this application;

[0025] Figure 7 is an isometric view of the electro-permanent magnet uncoiler of this application (the wear-resistant plate is hidden);

[0026] Figure 8 is a radial sectional view of the wear-resistant plate of this application;

[0027] The descriptions of the reference numerals are as follows:

[0028] 100, driving body; 110, central shaft; 120, power box;

[0029] 200, electro-permanent magnet body; 210, main body plate; 220, annular electro-permanent magnet assembly; 221, electro-permanent magnet; 222, auxiliary electro-permanent magnet;

[0030] 300, brush assembly; 310, slip ring; 310a, annular metal groove; 310b, common terminal ring groove; 310c, power supply ring groove; 320, brush holder; 330, common terminal brush; 340, power supply terminal brush;

[0031] 400, wear-resistant plate; 400a, conical surface;

[0032] 500, steel coil;

[0033] 600, diameter sensor;

[0034] 700, control unit;

[0035] 800, Distribution box assembly. Specific implementation manner

[0036] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than limiting the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0037] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0038] As Figure 1 As shown, this embodiment discloses an electro-permanent magnetic uncoiling device, which includes a driving main body 100, an electro-permanent magnetic body 200, and a brush assembly 300. The driving main body 100 is used to drive the steel coil 500 to rotate and uncoil. The electro-permanent magnetic body 200 is used to adsorb the steel coil 500. The brush assembly 300 is used to provide electric energy for the electro-permanent magnetic body 200 during rotation work, so as to realize the adsorption or release of the steel coil 500 by the electro-permanent magnetic body 200.

[0039] As Figure 2 As shown, the driving main body 100 includes a power box 120, a power mechanism (not shown), and a central shaft 110; the power box 120 is fixed to the ground, the power mechanism is arranged in the power box 120, and the power mechanism is used to drive the central shaft 110 to rotate, so that the central shaft 110 drives the electro-permanent magnetic body 200 and the steel coil 500 to rotate. The power mechanism can refer to existing devices with rotational driving capabilities such as motors, and will not be elaborated too much in this embodiment. The central shaft 110 is horizontally arranged. One end of the central shaft 110 passes through the power box 120 and is connected to the output end of the power mechanism. The central shaft 110 can be driven to rotate by the power mechanism. The central shaft 110 can adopt an existing radially inner supporting shaft.

[0040] As Figure 2 shown, the electro-permanent magnet body 200 includes a main body plate 210 and a plurality of annular electro-permanent magnet components 220. The main body plate 210 is circular in shape, and the central axis 110 coaxially passes through the main body plate 210, and the central axis 110 is fixedly connected to the main body plate 210 so that the central axis 110 can drive the main body plate 210 to rotate synchronously. The plurality of annular electro-permanent magnet components 220 are all coaxially arranged within the main body plate 210. The annular electro-permanent magnet components 220 are used to adsorb the axial end faces of the steel coil 500 so that the steel coil 500 can be unwound stably. The plurality of annular electro-permanent magnet components 220 have different inner diameters. Among them, the inner diameters of the plurality of annular electro-permanent magnet components 220 increase in sequence, and the plurality of annular electro-permanent magnet components 220 are coaxially sleeved in sequence along the radial direction of the main body plate 210. It can be understood that the inner diameter of an annular electro-permanent magnet component 220 located at the edge position of the main body plate 210 is the largest, and the inner diameter of an annular electro-permanent magnet component 220 close to the axis position of the main body plate 210 is the smallest. In this embodiment, the plurality of annular electro-permanent magnet components 220 arranged within the main body plate 210 have magnetic suction force after being energized, and can form a magnetic suction surface on the first side surface (an axial end face) of the main body plate 210 to facilitate the adsorption of the steel coil 500.

[0041] As Figure 3 shown, since the electro-permanent magnet body 200 needs to rotate together with the central axis 110, and the plurality of annular electro-permanent magnet components 220 need external power supply to achieve the corresponding adsorption function, therefore, in this embodiment, a brush assembly 300 is designed for the plurality of annular electro-permanent magnet components 220, specifically as follows:

[0042] As Figure 4 and Figure 5As shown, the brush assembly 300 includes a slip ring 310, a brush holder 320, a common terminal brush 330, and a power supply terminal brush 340; the slip ring 310 is coaxially fixed to the second side surface (the other end face in the axial direction) of the main body plate 210, and the slip ring 310 can rotate together with the main body plate 210; the slip ring 310 is in a ring shape, and a plurality of annular metal grooves 310a are provided on the outer peripheral surface of the slip ring 310. The inner peripheral wall of the annular metal groove 310a is configured with a metal material to facilitate contact conduction; among the plurality of annular metal grooves 310a (six annular metal grooves are illustrated in this embodiment), one annular metal groove 310a is configured as a common terminal ring groove 310b, and the common terminal ring groove 310b is used to provide connection points for forming a closed loop for each annular electro-permanent magnet assembly 220, and the remaining annular metal grooves 310a are configured as power supply ring grooves 310c, and the power supply ring grooves 310c are used to supply electrical energy to the annular electro-permanent magnet assembly 220; the brush holder 320 is fixedly arranged, and the brush holder 320 can be fixed on an external structure or can be fixed on the power box 120 through a bracket; the brush holder 320 is used to provide installation positions for the common terminal brush 330 and the power supply terminal brush 340. Among them, the overall shape of the brush holder 320 is arc-shaped, the brush holder 320 is coaxially arranged with the slip ring 310, and the brush holder 320 and the slip ring 310 are arranged corresponding to each other in the radial direction. The common terminal brush 330 is connected to the brush holder 320, and the common terminal brush 330 can be in radial contact with the common terminal ring groove 310b on the slip ring 310, and the two can be in relative sliding contact; a plurality of power supply terminal brushes 340 are all connected to the brush holder 320, and the plurality of power supply terminal brushes 340 can be in one-to-one corresponding contact with the plurality of power supply ring grooves 310c in the radial direction of the slip ring 310, and the two can be in relative sliding contact. The power supply terminal brush 340 can conduct electricity to the power supply ring groove 310c, and the annular electro-permanent magnet assembly 220 obtains electrical energy through the power supply ring groove 310c.

[0043] Among them, a plurality of annular electro-permanent magnet assemblies 220 are electrically connected to the power supply ring grooves 310c one by one, and all the annular electro-permanent magnet assemblies 220 are electrically connected to the common terminal ring groove 310b. The electrical connection in this embodiment includes wire connection.

[0044] In some preferred embodiments, the annular metal grooves 310a on the slip ring 310 are formed by surrounding in the circumferential direction of the slip ring 310, that is, the length direction of the annular metal groove 310a is configured as the circumferential direction of the slip ring 310, and the plurality of annular metal grooves 310a are arranged in the axial direction of the slip ring 310. Such a design can, on the one hand, ensure contact conduction between the slip ring 310 and the power supply terminal brush 340, and on the other hand, can realize the integration of the plurality of annular metal grooves 310a, increasing the structural compactness.

[0045] Such as Figure 6As shown, in this embodiment, the external control unit 700 is connected to the distribution box assembly 800. The distribution box assembly 800 is electrically connected to the common terminal brush 330 and the power supply terminal brush 340. The distribution box assembly 800 introduces electric energy into the power supply ring groove 310c through the common terminal brush 330. The distribution box assembly 800, the common terminal brush 330, the power supply ring groove 310c, the annular electro-permanent magnet assembly 220, the common terminal ring groove 310b, and the common terminal brush 330 are connected in sequence to form a closed loop.

[0046] Preferably, in this embodiment, the number of the annular electro-permanent magnet assemblies 220 is set in one-to-one correspondence with the power supply ring grooves 310c. In this embodiment, five annular electro-permanent magnet assemblies 220 are designed to be in one-to-one correspondence with five power supply ring grooves 310c.

[0047] As Figure 7 shown, each annular electro-permanent magnet assembly 220 includes a plurality of electro-permanent magnets 221. The plurality of electro-permanent magnets 221 are arranged at intervals along the circumferential direction of the main body plate 210 within the main body plate 210. Preferably, the plurality of electro-permanent magnets 221 are arranged at equal intervals along the circumferential direction within the main body plate 210. The number of electro-permanent magnets 221 included in each annular electro-permanent magnet assembly 220 can be the same or different. The specific structural form of the electro-permanent magnet 221 is common knowledge in the art. For the convenience of explaining this embodiment, the structure of the electro-permanent magnet 221 will be briefly described below. The electro-permanent magnet 221 includes magnetic poles (for adsorbing the steel coil 500), permanent magnets, variable magnets, and exciting coils. The connection relationship and positional relationship of the various components of the electro-permanent magnet 221 are common knowledge in the art and will not be elaborated here. The exciting coils of the electro-permanent magnet 221 are electrically connected to the power supply ring groove 310c and the common terminal ring groove 310b through wires respectively.

[0048] For the convenience of understanding the connection relationship between the annular electro-permanent magnet assembly 220 and the power supply ring groove 310c in this embodiment, the following is an example. Assume that the first annular electro-permanent magnet assembly 220 corresponds to the first power supply ring groove 310c. The first annular electro-permanent magnet assembly 220 includes a plurality of electro-permanent magnets 221. The exciting coils of each electro-permanent magnet 221 are electrically connected to the first power supply ring groove 310c and the common terminal ring groove 310b through wires respectively.

[0049] It should be noted that in this embodiment, each electromagnet is separately electrically connected to the power supply ring groove 310c and the common terminal ring groove 310b to form a circuit. In addition, other indirect connection methods can also be used to form a circuit. For example, the first annular electro-permanent magnet assembly 220 includes a plurality of electro-permanent magnets 221. The exciting coils of two adjacent electro-permanent magnets 221 are connected in series. Then, the two free ends formed after the exciting coils of the plurality of electro-permanent magnets 221 are connected in series are respectively electrically connected to the first power supply ring groove 310c and the common terminal ring groove 310b through wires. In this embodiment, the power supply ring groove 310c and the common terminal ring groove 310b are provided to supply power to the electro-permanent magnet 221 so that it can work normally in a rotating state. As for the way to form a power supply circuit, this embodiment does not limit it.

[0050] As Figure 7 shown, in some preferred embodiments, the shape of the electro-permanent magnet 221 is arc-shaped. Specifically, the shape of the magnetic pole of the electro-permanent magnet 221 is arc-shaped, and the arc direction of the arc is the same as the circumferential direction of the main body plate 210. In this embodiment, the magnetic pole of the electro-permanent magnet 221 is designed to be arc-shaped. On the one hand, it is convenient for a plurality of electro-permanent magnets 221 to form an annular magnetic attraction area in the circumferential direction. On the other hand, the limited space of the main body plate 210 can be fully utilized to realize the large-area installation of the magnetic poles.

[0051] As Figure 7 shown, in some preferred embodiments, the annular electro-permanent magnet assembly 220 with the smallest inner diameter further includes a plurality of auxiliary electro-permanent magnets 222. Among them, the annular electro-permanent magnet assembly 220 with the smallest inner diameter refers to an annular electro-permanent magnet assembly 220 that is closest to the axis of the main body plate 210 along the radial direction of the main body plate 210. The specific structural form of the auxiliary electro-permanent magnet 222 is the same as the structural form of the above-mentioned electro-permanent magnet 221. A plurality of installation grooves (not marked) are provided at one end of the central axis 110 close to the main body plate 210. The plurality of installation grooves are equally spaced along the circumferential direction of the central axis 110. The installation grooves correspond to the auxiliary electro-permanent magnets 222 one by one. The auxiliary electro-permanent magnets 222 are installed in the installation grooves. The exciting coils of the auxiliary electro-permanent magnets 222 are respectively electrically connected to the power supply ring groove 310c and the common terminal ring groove 310b through wires. In this embodiment, the magnetic pole polarity of the auxiliary electro-permanent magnet 222 is opposite to the magnetic pole polarity of the above-mentioned electro-permanent magnet 221. Such a design is to make the magnetic field more effectively penetrate the central part of the steel coil 500, increase the magnetic force acting on the central part of the steel coil 500, avoid the insufficient magnetic force caused by the insufficient magnetic field area in the middle part, and effectively avoid the crosstalk of the central part of the steel coil 500.

[0052] As Figure 1 and Figure 8As shown, in the embodiment, a plurality of annular electro-permanent magnet assemblies 220 disposed within the main body plate 210 can cause the first side surface (axial end surface) of the main body plate 210 to have magnetic suction force. A wear-resistant plate 400 is fixedly disposed on the first side surface of the main body plate 210. The central shaft 110 passes through the wear-resistant plate 400 and is fixedly connected to the wear-resistant plate 400 coaxially. Along the axial direction of the central shaft 110, the end surface of the wear-resistant plate 400 facing the steel coil 500 is configured as a conical surface 400a, and the cone angle of the conical surface 400a is greater than 0 degrees and less than 10 degrees, such as 2 degrees, 6 degrees, or 10 degrees. The conical surface 400a of this embodiment is in fitting contact with the axial end surface of the steel coil 500.

[0053] In this embodiment, since the axial end surface of the steel coil 500 has a concave end surface when the steel coil 500 is being loaded onto the reel, the wear-resistant plate 400 in this embodiment is made into a structure that is high in the middle and low around (i.e., a conical surface). Under the action of the magnetic force of the electro-permanent magnet body 200, the concave end surface of the steel coil 500 and the conical surface 400a are in fitting contact along the axial direction of the central shaft 110, which can reduce the air gap and increase the stability of magnetic adsorption. At the same time, the design of the cone angle also provides a far-away angle for preventing the strip from scraping the edge during the unwinding process of the coil.

[0054] In some preferred embodiments, a diameter sensor 600 is disposed on the wear-resistant plate 400. The diameter sensor 600 is used to monitor the diameter change of the steel coil 500 during the unwinding process, so that the control unit 700 can start and stop the corresponding annular electro-permanent magnet assemblies 220. The diameter sensor 600 is electrically connected to the control unit 700 (such as wireless connection).

[0055] One working mode of the electro-permanent magnet unwinding device in this embodiment is as follows:

[0056] The steel coil 500 is axially sleeved onto the central shaft 110, and one axial end surface (concave end surface) of the steel coil 500 is in fitting contact with the conical surface 400a of the wear-resistant plate 400;

[0057] Power is supplied to all the power supply annular grooves 310c so that all the electro-permanent magnets 221 are energized and generate magnetic suction force, tightly adsorbing the steel coil 500 on the conical surface 400a of the wear-resistant plate 400;

[0058] The power mechanism drives the central shaft 110, the main body plate 210, and the wear-resistant plate 400 to rotate, and the steel coil 500 then rotates and unwinds accordingly. When the diameter (outer diameter) of the steel coil 500 is less than the inner diameter of the outermost first annular electro-permanent magnet assembly 220, the control unit 700 shuts down the first annular electro-permanent magnet assembly 220. When the diameter of the steel coil 500 is less than the inner diameter of the outermost second annular electro-permanent magnet assembly 220, the second annular electro-permanent magnet assembly 220 is shut down, and so on, gradually shutting down to the annular electro-permanent magnet assembly 220 with the smallest inner diameter. This method can prevent the steel strip from being scratched and damaged by the magnetic force when scraping the wear-resistant plate 400;

[0059] After the unwinding is completed, turn off the power mechanism and wait for the next operation.

[0060] The above are only specific embodiments of the present application. Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, modules, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present application.

Claims

1. An electro-permanent magnet uncoiler, characterized in that, Comprising: A driving main body (100) provided with a central shaft (110) for driving a steel coil (500) to rotate and unwind; An electro-permanent magnet main body (200) including a main body plate (210) and a plurality of annular electro-permanent magnet components (220) for forming a magnetic attraction surface on a first side surface of the main body plate (210); The main body plate (210) and the central shaft (110) are coaxially and fixedly connected; The plurality of annular electro-permanent magnet components (220) are coaxially arranged within the main body plate (210), the plurality of annular electro-permanent magnet components (220) have different inner diameters and the plurality of annular electro-permanent magnet components (220) are coaxially sleeved in sequence along the radial direction of the main body plate (210); A brush assembly (300) including a slip ring (310), a brush holder (320), a common terminal brush (330), and a power supply terminal brush (340); The slip ring (310) is coaxially and fixedly arranged on a second side surface of the main body plate (210), the slip ring (310) is provided with a plurality of annular metal grooves (310a), one of the annular metal grooves (310a) is configured as a common terminal ring groove (310b), and the remaining annular metal grooves (310a) are configured as power supply ring grooves (310c); The common terminal brush (330) is connected to the brush holder (320), and the common terminal brush (330) contacts the common terminal ring groove (310b); The plurality of power supply terminal brushes (340) are all connected to the brush holder (320), and the power supply terminal brushes (340) are in one-to-one contact with the power supply ring grooves (310c); The plurality of annular electro-permanent magnet components (220) are in one-to-one electrical connection with the power supply ring grooves (310c); All the annular electro-permanent magnet components (220) are electrically connected to the common terminal ring groove (310b).

2. The electro-permanent magnet uncoiling device according to claim 1, characterized in that The driving main body (100) includes a power box (120), a power mechanism, and a central shaft (110); The power mechanism is arranged within the power box (120); One end of the central shaft (110) passes through the power box (120) and is connected to the power mechanism; The central shaft (110) is driven to rotate by the power mechanism; The brush holder (320) is fixedly connected to the power box (120) through a bracket.

3. The electro-permanent magnet uncoiling device according to claim 1, wherein A wear-resistant plate (400) is arranged on the magnetic attraction surface of the main body plate (210); The end surface of the wear-resistant plate (400) facing the steel coil (500) is configured as a conical surface (400a), and the conical surface (400a) is in fitting contact with the axial end surface of the steel coil (500).

4. The electro-permanent magnetic decoiling device according to claim 3, wherein, A diameter sensor (600) for detecting changes in the diameter of the steel coil is arranged on the wear-resistant plate (400).

5. The electro-permanent magnetic decoiler device according to any one of claims 1 to 4, characterized in that The annular electro-permanent magnet component (220) includes a plurality of electro-permanent magnets (221) spaced apart along the circumferential direction of the main body plate (210), and the exciting coils of the electro-permanent magnets (221) are respectively electrically connected to the power supply ring grooves (310c) and the common terminal ring groove (310b).

6. The electro-permanent magnetic uncoiling device according to claim 5, characterized in that, The electro-permanent magnet (221) is arc-shaped, and its arc direction is the same as the circumferential direction of the main body plate (210).

7. The electro-permanent magnetic decoiling device according to claim 5, characterized in that The annular electro-permanent magnet component (220) with the smallest inner diameter further includes a plurality of auxiliary electro-permanent magnets (222), and the central shaft (110) is provided with mounting grooves corresponding to the auxiliary electro-permanent magnets (222) one by one; The auxiliary electro-permanent magnets (222) are arranged in the mounting grooves; The auxiliary electro-permanent magnet (222) is electrically connected to the power supply ring groove (310c) and the common terminal ring groove (310b) respectively.

8. The electro-permanent magnetic uncoiling device according to claim 1, characterized in that, The annular metal grooves (310a) on the slip ring (310) are formed by surrounding the slip ring (310) in the circumferential direction, and a plurality of annular metal grooves (310a) are arranged axially on the slip ring (310).

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