Electro-permanent magnetic support device

Abstract

The present invention provides an electro-permanent magnetic support plate device, wherein a mounting hole is provided in the middle of the electro-permanent magnetic support plate device, and the electro-permanent magnetic support plate device is connected to the uncoiler shaft through the mounting hole. The electro-permanent magnetic support plate device comprises: an electro-permanent magnetic structure, wherein a plurality of annular electromagnets are sequentially provided in a radial direction along the mounting hole; a panel connected to the magnetic end of the electro-permanent magnetic structure and used to abut against the steel coil; a conductive slip ring connected to the non-magnetic end of the electro-permanent magnetic structure and used to magnetize or demagnetize the electro-permanent magnetic structure; a distance meter for measuring the change in the outer diameter of the steel coil during the uncoiling operation; and a controller for controlling the conductive slip ring to magnetize the annular electromagnet corresponding to the uncoiled portion of the steel coil according to the change in the outer diameter detected by the distance meter, thereby ensuring that the uncoiled portion of the steel coil is attracted to the panel, avoiding slippage and reducing damage to the end face of the steel coil edge. The conductive slip ring is controlled to demagnetize the annular electromagnet corresponding to the uncoiling portion, thereby losing the suction force on the uncoiling steel strip and ensuring the normal threading operation.

Description

Technical Field

[0001] The present disclosure relates to the technical field of production of a continuous operation line for hot stretching of cold-rolled silicon steel after high-temperature annealing, and in particular to an electric permanent magnetic support plate device. Background Art

[0002] Before the high-temperature annealing process of oriented silicon steel, magnesium oxide is generally applied to the surface of the steel coil to prevent adhesion between the steel coil layers. After the high-temperature process, the moisture in the magnesium oxide between the steel coil layers is dried out and lost, resulting in gaps between each layer of steel strip. The powdery substance sintered from the magnesium oxide between the layers makes the steel coil prone to slippage. After high-temperature annealing, the steel coil becomes softer and the entire steel coil becomes tofu-like. Slippage may occur during uncoiling in the next process, causing damage to the edge and end faces of the steel coil.

[0003] In the related art, there are two commonly used technologies. The first is a double baffle structure with inner and outer panels, which can only serve as a stop when the steel coil slips. For heavier steel coils, discs are set on both ends of the steel coil on the reel, which are fixed by the side baffle of the gear box through a thrust rod; the outer baffle is fixed by an openable and closable clamping mechanism. However, the inner and outer double baffles clamp the two ends of the steel coil to unwind, which can easily cause the opened strip to tear and break. In actual use, the double baffles leave a certain distance from the two ends of the steel coil to form a stop effect, but when the steel coil slips, it will still collide with it, causing damage to the edge of the steel coil. The second is a left-right double uncoiler to clamp the steel coil from the left and right ends of the steel coil. The main problems are the synchronization difference between the opening of the left and right uncoilers and the squeezing of the inner ring steel strip of the steel coil by the reel; it can only be produced in a single channel, with low production efficiency, and is not suitable for high-speed units. Both technical means cannot effectively solve the problem of damage to the edge and end faces of the steel coil during unwinding.

[0004] Therefore, it is necessary to propose an electro-permanent magnetic plate device to at least partially solve the problems existing in the prior art. Summary of the Invention

[0005] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] To this end, the present disclosure provides an electro-permanent magnetic support plate device.

[0007] In view of this, according to an embodiment of the present disclosure, an electro-permanent magnetic backing plate device is proposed. A mounting hole is provided in the middle of the electro-permanent magnetic backing plate device. The electro-permanent magnetic backing plate device is used to be connected to the uncoiler shaft through the mounting hole. The electro-permanent magnetic backing plate device includes:

[0008] The electro-permanent magnetic structure comprises a plurality of annular electromagnets arranged in sequence along the radial direction of the mounting hole;

[0009] A panel connected to the magnetic end of the electro-permanent magnetic structure and used to abut against the steel coil;

[0010] A conductive slip ring connected to the non-magnetic end of the electro-permanent magnetic structure and used for magnetizing or demagnetizing the electro-permanent magnetic structure;

[0011] A distance meter is used to measure the change in the outer diameter of the steel coil during the uncoiling operation;

[0012] The controller is used to control the conductive slip ring to magnetize or demagnetize different annular electromagnets according to the change in the outer diameter detected by the distance meter.

[0013] In a feasible embodiment, the electropermanent magnet structure is provided with a plurality of gaps along the radial direction of the mounting hole, and the plurality of gaps are axially symmetrically arranged with the central axis of the mounting hole as the axis of symmetry.

[0014] In a feasible embodiment, there are three annular electromagnets, which are arranged in the radial direction of the mounting hole, from away from the mounting hole to close to the mounting hole, as an outer ring electromagnet, a middle ring electromagnet and an inner ring electromagnet;

[0015] There are four gaps so that the orthographic projection of the electropermanent magnetic structure along the axis of the mounting hole is in the shape of a cross.

[0016] In a feasible implementation manner, the adsorption forces generated by the outer ring electromagnet, the middle ring electromagnet and the inner ring electromagnet are all 0 tons to 5 tons.

[0017] In a feasible implementation, it further includes:

[0018] The support seat is arranged between the conductive slip ring and the electro-permanent magnetic structure.

[0019] In a feasible implementation manner, the conductive slip ring includes:

[0020] Conductive ring;

[0021] A contact claw is provided on the inner side wall of the conductive ring body and is used to contact the annular electromagnet;

[0022] Wherein, each of the above-mentioned annular electromagnets is correspondingly provided with one of the above-mentioned contact claws.

[0023] In a feasible implementation, it further includes:

[0024] The fixing piece is used to fix the above-mentioned electro-permanent magnetic support plate device on the bracket of the above-mentioned uncoiler rotating shaft.

[0025] In a feasible implementation manner, the magnetic circuit conductive material of the annular electromagnet is electrical cast steel or low carbon steel.

[0026] In a feasible implementation manner, the panel is a stainless steel panel, and the thickness of the stainless steel panel is 3 mm to 6 mm.

[0027] In a feasible implementation manner, the rangefinder is a laser rangefinder.

[0028] Compared to the prior art, the present disclosure provides at least the following advantages: The electropermanent magnetic support plate device provided in the embodiments of the present disclosure has a mounting hole in its center, through which the electropermanent magnetic support plate device is mounted to the uncoiler shaft. The electropermanent magnetic support plate device comprises an electropermanent magnetic structure, a panel, a conductive slip ring, a distance meter, and a controller. The electropermanent magnetic structure is provided with multiple annular electromagnets arranged radially along the mounting hole. The panel is connected to the magnetic end of the electropermanent magnetic structure. After the electropermanent magnetic support plate device is mounted on the uncoiler shaft, a expansion reel is connected to the uncoiler shaft, and the steel coil is placed on the expansion reel to complete the steel coil installation. The panel abuts the steel coil to prevent friction between the steel coil and the electropermanent magnetic structure, thereby damaging the electropermanent magnetic structure and extending its service life. A conductive slip ring is connected to the non-magnetic end of the electropermanent magnetic structure, allowing for targeted magnetization or demagnetization of different annular electromagnets. The distance meter measures changes in the outer diameter of the coil during the uncoiling process, accurately determining the degree of uncoiling. Based on the changes in the outer diameter of the coil detected by the distance meter, the controller controls the conductive slip ring to magnetize or demagnetize the corresponding annular electromagnet. Specifically, the uncoiler shaft drives the permanent magnet support plate and the expansion and contraction drum to rotate synchronously. The conductive slip ring is controlled to magnetize the annular electromagnet corresponding to the uncoiled portion of the coil to ensure that the uncoiled portion adheres to the panel. The panel and the uncoiled portion rotate synchronously, preventing slippage, reducing damage to the coil edge, and improving product quality. Furthermore, the conductive slip ring is controlled to demagnetize the annular electromagnet corresponding to the uncoiling portion of the coil to eliminate suction on the uncoiling outer strip of the coil, reducing wear on the panel by the uncoiled strip, ensuring normal threading operations, and improving reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the exemplary embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0030] Figure 1 A schematic structural diagram of an electro-permanent magnetic support plate device according to an embodiment of the present disclosure;

[0031] Figure 2 A schematic assembly diagram of an electro-permanent magnetic support plate device according to an embodiment of the present disclosure;

[0032] Figure 3 A schematic front view of an electro-permanent magnetic support plate device according to an embodiment of the present disclosure.

[0033] in, Figures 1 to 3 The corresponding relationship between the reference numerals and component names is as follows:

[0034] 100 electro-permanent magnetic support plate device, 110 electro-permanent magnetic structure, 111 annular electromagnet, 1111 outer ring electromagnet, 1112 middle ring electromagnet, 1113 inner ring electromagnet, 112 gap, 120 panel, 130 conductive slip ring, 131 conductive ring body, 132 contact claw, 140 distance meter, 150 support seat, 200 uncoiler shaft, 210 expansion and contraction reel, 220 steel coil. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to help understand the present invention, but does not constitute a limitation of the present invention. The specific structural and functional details disclosed herein are merely intended to describe exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0036] like Figures 1 to 3 As shown, according to an embodiment of the present disclosure, an electro-permanent magnetic support plate device 100 is proposed, wherein a mounting hole is provided in the middle portion of the electro-permanent magnetic support plate device 100, and the electro-permanent magnetic support plate device 100 is used to be connected to the uncoiler shaft 200 through the mounting hole. The electro-permanent magnetic support plate device 100 includes: an electro-permanent magnetic structure 110, on which a plurality of annular electromagnets 111 are sequentially provided in the radial direction along the mounting hole; a panel 120, connected to the magnetic end of the electro-permanent magnetic structure 110, for abutting against the steel coil 220; a conductive slip ring 130, connected to the non-magnetic end of the electro-permanent magnetic structure 110, for magnetizing or demagnetizing the electro-permanent magnetic structure 110; a distance meter 140, for measuring the change in outer diameter of the steel coil 220 during the uncoil operation; and a controller, for controlling the conductive slip ring 130 to magnetize or demagnetize different annular electromagnets 111 according to the change in outer diameter detected by the distance meter 140.

[0037] It is understandable that the electro-permanent magnetic support plate device 100 provided in the embodiment of the present disclosure has a mounting hole in the middle thereof, and the electro-permanent magnetic support plate device 100 is mounted on the uncoiler shaft 200 through the mounting hole. The electro-permanent magnetic support plate device 100 is provided with an electro-permanent magnetic structure 110, a panel 120, a conductive slip ring 130, a rangefinder 140 and a controller. Among them, the electro-permanent magnetic structure 110 is sequentially provided with a plurality of annular electromagnets 111 in the radial direction along the mounting hole. That is, in the orthographic projection in the axial direction of the mounting hole, the outer diameter of the plurality of annular electromagnets 111 gradually decreases from away from the mounting hole to close to the mounting hole. The panel 120 is connected to the magnetic end of the electropermanent magnet structure 110. After the electropermanent magnet support plate 100 is installed on the uncoiler shaft 200, the expansion and contraction drum 210 is connected to the uncoiler shaft 200, and the steel coil 220 is placed on the expansion and contraction drum 210 to complete the installation of the steel coil 220. The panel 120 abuts the steel coil 220 to prevent the steel coil 220 from rubbing against the electropermanent magnet structure 110, thereby damaging the electropermanent magnet structure 110 and extending the service life of the electropermanent magnet structure 110. The conductive slip ring 130 is connected to the non-magnetic end of the electropermanent magnet structure 110. Through the conductive slip ring 130, different annular electromagnets 111 can be magnetized or demagnetized in a targeted manner. The rangefinder 140 can measure the changes in the outer diameter of the steel coil 220 during the unwinding process, thereby accurately determining the degree of unwinding. The controller can detect the change in the outer diameter of the steel coil 220 based on the distance meter 140, thereby controlling the conductive slip ring 130 to magnetize or demagnetize the corresponding annular electromagnet 111. Specifically, the uncoiler shaft 200 can drive the electro-permanent magnetic plate device 100 and the expansion and contraction drum 210 to rotate synchronously. By controlling the conductive slip ring 130 to magnetize the annular electromagnet 111 corresponding to the unwinding portion of the steel coil 220, the unwinding portion of the steel coil 220 can be attracted and flattened against the panel 120. The panel 120 and the unwinding portion of the steel coil 220 rotate synchronously, avoiding slippage, reducing damage to the edges and end faces of the steel coil 220, and improving product qualification rate. The conductive slip ring 130 is also controlled to demagnetize the annular electromagnet 111 corresponding to the unwinding portion of the steel coil 220 to eliminate the suction force on the unwinding steel strip on the outer layer of the steel coil 220, reducing wear on the panel 120 caused by the unwinding steel strip, ensuring normal threading operations, and improving reliability. In addition, during the unwinding process, the use of electromagnet adsorption technology can reduce energy consumption, that is, a short power-on and power-off time can generate a strong magnetic field conversion, forming adsorption capacity, and does not require long-term power supply, thus achieving energy-saving effects.

[0038] It should be noted that through holes are opened in the middle of the electropermanent magnet structure 110, the panel 120 and the conductive slip ring 130. The electropermanent magnet structure 110, the panel 120 and the conductive slip ring 130 are coaxially arranged. After the electropermanent magnet structure 110, the panel 120 and the conductive slip ring 130 are assembled, the assembled through holes constitute mounting holes.

[0039] For example, the specific use process of the electro-permanent magnetic support plate device 100 provided in the embodiment of the present disclosure is as follows:

[0040] When the steel coil 220 is put onto the uncoiler drum by the steel coil 220 lifting trolley, one side end face of the steel coil 220 moves with the steel coil 220 trolley to a position about 10 mm from the electro-permanent magnetic plate device 100. When the distance meter 140 measures that the outer diameter of the steel coil 220 is greater than 1700, the controller controls the conductive slip ring 130 to start energizing and magnetizing the multiple annular electromagnets 111 of the electro-permanent magnetic plate device 100, generating an attractive force to suck the side end face of the steel coil 220 close to the panel 120. The charging and discharging are repeated three times to fit the side end face of the steel coil 220 to the panel 120. Then The controller controls the conductive slip ring 130 to power off and demagnetize the multiple annular electromagnets 111, and the uncoiler drum expands the inner diameter of the steel coil 220; after the inner diameter of the steel coil 220 expands to a preset size, the controller controls the conductive slip ring 130 to power on and magnetize the multiple annular electromagnets 111 to attract the side end surface of the steel coil 220 and close it to the surface of the panel 120; when the outer layer of the steel coil 220 is unwound, the controller controls the conductive slip ring 130 to power off and demagnetize the outermost ring of the annular electromagnet 111, and the outermost layer of the steel strip with a thickness of about 200mm loses its suction and begins to thread the strip; at this time, the inner and outer layers of the steel strip 220 are unwound. The middle steel coil 220 is still tightly attracted to the panel 120 by the remaining annular electromagnets 111 and rotates with the reel; when the distance meter 140 measures that the outer diameter of the steel coil 220 is less than 1700mm, the controller controls the conductive slip ring 130 to power off and demagnetize the annular electromagnet 111 at the corresponding position, and keeps the annular electromagnet 111 at the outer side of the corresponding position powered on and demagnetized to ensure that the steel strip threading operation can continue. At the same time, the controller controls the conductive slip ring 130 to keep the annular electromagnet 111 at the inner side of the corresponding position powered on and magnetized to ensure that the corresponding position The inner layer of steel coil 220 is still tightly adsorbed on the panel 120, ensuring that the inner ring of the steel coil 220 does not slip; when the distance meter 140 measures that the outer diameter of the steel coil 220 is less than 1400mm, that is, when the distance meter 140 measures that the outer diameter of the steel coil 220 is less than the outer diameter of the innermost ring electromagnet 111, the controller controls the conductive slip ring 130 to demagnetize all the ring electromagnets 111 until the strip tail is unwound. At this time, the strip is pulled by the clamping roller, and the strip tension has tightly wound the small tail coil remaining on the surface of the reel on the reel, and no slip will occur. The electro-permanent magnetic support plate device 100 provided in the embodiment of the present disclosure is used in the unwinding equipment of the unit after annealing of oriented silicon steel, effectively controlling the slip of the steel coil 220, reducing damage to the edge of the strip and inner wrinkles caused by interlayer slippage, and greatly improving the yield rate. In particular, the loss of the tail of the steel coil 220 is reduced to less than 100kg, and the yield rate is improved.

[0041] In some examples, such as Figures 1 to 3As shown, along the radial direction of the mounting hole, the electropermanent magnet structure 110 is provided with a plurality of gaps 112 , and the plurality of gaps 112 are axially symmetrically arranged with the central axis of the mounting hole as the axis of symmetry.

[0042] It will be appreciated that the electropermanent magnetic structure 110 is provided with multiple gaps 112 radially along the mounting hole. These gaps 112 are arranged symmetrically about the central axis of the mounting hole. This arrangement eliminates magnetic force generated at the gaps 112 of the electropermanent magnetic structure 110, thereby reducing the attraction force on the steel strip at these gaps 112. This prevents the uncoiled steel strip from being constantly attracted to the panel 120 and causing edge scratches.

[0043] In some examples, such as Figures 1 to 3 As shown, there are three annular electromagnets 111, which are arranged in the radial direction of the mounting hole, from away from the mounting hole to close to the mounting hole, as an outer ring electromagnet 1111, a middle ring electromagnet 1112 and an inner ring electromagnet 1113; there are four gaps 112, so that the orthographic projection of the electropermanent magnet structure 110 along the axial direction of the mounting hole is in the shape of a "cross".

[0044] It is understood that a total of three ring-shaped electromagnets 111 can be provided. Specifically, along the radial direction of the mounting hole, from farther away from the mounting hole to closer to the mounting hole, an outer ring electromagnet 1111, a middle ring electromagnet 1112, and an inner ring electromagnet 1113 are provided in order. Specifically, the inner diameter of the outer ring electromagnet 1111 is larger than the outer diameter of the middle ring electromagnet 1112; and the inner diameter of the middle ring electromagnet 1112 is larger than the outer diameter of the inner ring electromagnet 1113. The outer ring electromagnet 1111 corresponds to the outer layer of the steel coil 220, the middle ring electromagnet 1112 corresponds to the middle layer of the steel coil 220, and the inner ring electromagnet 1113 corresponds to the inner layer of the steel coil 220. During the uncoiling operation of the steel coil 220, the controller can control the conductive slip ring 130 to cut off the power and demagnetize the outer ring electromagnet 1111, the middle ring electromagnet 1112 and the inner ring electromagnet 1113 in turn according to the change of the outer diameter of the steel coil 220 detected by the rangefinder 140, so as to ensure that the uncoiled part of the steel coil 220 remains in close contact with the panel 120 to avoid slippage, reduce damage to the edge end face of the steel coil 220, and lose the suction force on the outermost steel strip of the steel coil 220 that is being uncoiled, so as to ensure that the threading operation is carried out normally.

[0045] It is understood that there may be four gaps 112 so that the orthographic projection of the electropermanent magnetic structure 110 along the axis of the mounting hole is in the shape of a cross. Each gap 112 is in the shape of a sector with an angle of 90°.

[0046] In some examples, the adsorption forces generated by the outer ring electromagnet 1111 , the middle ring electromagnet 1112 , and the inner ring electromagnet 1113 are all 0 tons to 5 tons.

[0047] It can be understood that the adsorption forces of the outer ring electromagnet 1111, the middle ring electromagnet 1112 and the inner ring electromagnet 1113 are all between 0 tons and 5 tons, that is, no adsorption force is generated after power is cut off and demagnetization, and the adsorption force can reach 5 tons when running at full power.

[0048] In some examples, such as Figure 2 As shown, it also includes: a support base 150, which is arranged between the conductive slip ring 130 and the electro-permanent magnetic structure 110.

[0049] It is understood that the electro-permanent magnetic support plate device 100 is further provided with a support base 150. Specifically, the support base 150 is disposed between the conductive slip ring 130 and the electro-permanent magnetic structure 110. A through hole is provided in the middle of the support base 150 so that the support base 150 can be sleeved on the uncoiler shaft 200. The support base 150 supports the electro-permanent magnetic support plate device 100 to improve stability.

[0050] In some examples, such as Figure 1 As shown, the conductive slip ring 130 includes: a conductive ring body 131; a contact claw 132, which is provided on the inner side wall of the conductive ring body 131 and is used to contact the annular electromagnet 111; wherein each annular electromagnet 111 is correspondingly provided with one contact claw 132.

[0051] It is understood that the conductive slip ring 130 is provided with a conductive ring body 131 and a contact claw 132, wherein the conductive slip ring 130 can be a copper ring with a through hole in the middle. The contact claw 132 can be arranged on the inner side wall of the conductive ring body 131, extending from the conductive ring body 131 to contact the annular electromagnet 111, thereby powering on the annular electromagnet 111 for magnetization or demagnetization. Furthermore, each annular electromagnet 111 corresponds to a contact claw 132, and the controller can control different contact claws 132 of the conductive slip ring 130 respectively, thereby achieving targeted magnetization or demagnetization of different annular electromagnets 111, thereby changing the adsorption force of the panel 120 on different positions of the steel coil 220.

[0052] In some examples, it further includes: a fixing member for fixing the above-mentioned electro-permanent magnetic plate device 100 on the bracket of the above-mentioned uncoiler shaft 200.

[0053] It is understandable that the electro-permanent magnetic plate support device 100 is further provided with a fixing member, through which the electro-permanent magnetic plate support device 100 is fixed to the crosshead support of the uncoiler shaft 200 .

[0054] For example, the fixing parts can be M26 bolts, and the electric permanent magnetic support plate device 100 is fixed to the cross head bracket of the uncoiler shaft 200 by 16 M26 bolts, so that the electric permanent magnetic support plate device 100 can rotate synchronously with the expansion and contraction reel 210 and the steel coil 220.

[0055] In some examples, the magnetic circuit conductive material of the ring-type electromagnet is made of electrical cast steel or low-carbon steel to ensure good magnetic conductivity.

[0056] In some examples, the panel 120 is a stainless steel panel 120 , and the thickness of the stainless steel panel 120 is 3 mm to 6 mm.

[0057] It is understood that the panel 120 can be made of stainless steel to provide excellent wear resistance and rust resistance, thereby extending its service life. The thickness of the stainless steel panel 120 can be 3 mm to 6 mm. While ensuring good mechanical properties, it also ensures that the annular electromagnet 111 can maintain the suction force of the steel coil 220 through the panel 120, thereby improving reliability. The diameter of the panel 120 can be selected based on the outer diameter of the steel coil 220. For example, the diameter of the panel 120 can be 1900 mm.

[0058] In some examples, the rangefinder 140 is a laser rangefinder.

[0059] It is understandable that the rangefinder 140 can be selected as a laser rangefinder. By placing the laser rangefinder at the reel section of the steel coil 220, the outer diameter of the steel coil 220 can be measured non-contactly. It is easy to use, reliable and highly safe.

[0060] It should be understood that the terms first, second, etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the exemplary embodiments of the present invention.

[0061] It should be understood that the term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that two relationships may exist. For example, A / and B can represent two situations: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0062] It should be understood that in the description of the present invention, the terms "upper", "vertical", "inside", "outside" and the like indicate orientations or positional relationships in which the disclosed product is conventionally placed when in use, or are orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0063] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0064] The terms used herein are used only to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprise," "include," "include," and / or "comprising" when used herein specify the presence of claimed features, integers, steps, operations, units, and / or components, and do not preclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0065] In the following description, certain details are provided to facilitate a thorough understanding of the exemplary embodiments. However, one of ordinary skill in the art will appreciate that the exemplary embodiments may be practiced without these specific details. In other embodiments, well-known processes, structures, and techniques may not be shown in unnecessary detail in order to avoid obscuring the exemplary embodiments.

[0066] The above are merely specific embodiments of the present application to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather is intended to conform to the widest scope consistent with the principles and novel features of the present application.

[0067] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

Claims

1. An electro-permanent magnetic support plate device, characterized in that: A mounting hole is provided in the middle of the electro-permanent magnetic support plate device, and the electro-permanent magnetic support plate device is used to be connected to the uncoiler shaft through the mounting hole. The electro-permanent magnetic support plate device includes: An electro-permanent magnetic structure, wherein a plurality of annular electromagnets are sequentially arranged in a radial direction along the mounting hole; A panel connected to the magnetic end of the electro-permanent magnetic structure and configured to abut against the steel coil; A conductive slip ring connected to the non-magnetic end of the electropermanent magnetic structure and used for magnetizing or demagnetizing the electropermanent magnetic structure; A distance meter, used for measuring the change in outer diameter of the steel coil during the uncoiling operation; The controller is used to control the conductive slip ring to magnetize or demagnetize different annular electromagnets according to the outer diameter change size detected by the rangefinder.

2. The electro-permanent magnetic plate support device according to claim 1, characterized in that: Along the radial direction of the mounting hole, the electropermanent magnet structure is provided with a plurality of gaps, and the plurality of gaps are arranged in an axisymmetric manner with the central axis of the mounting hole as the axis of symmetry.

3. The electro-permanent magnetic plate support device according to claim 2, characterized in that: There are three annular electromagnets, which are arranged in the radial direction of the mounting hole, from away from the mounting hole to close to the mounting hole, as an outer ring electromagnet, a middle ring electromagnet and an inner ring electromagnet in sequence; There are four gaps provided so that the orthographic projection of the electropermanent magnetic structure along the axis of the mounting hole is in the shape of a cross.

4. The electro-permanent magnetic support plate device according to claim 3, characterized in that: The adsorption forces generated by the outer ring electromagnet, the middle ring electromagnet and the inner ring electromagnet are all within a range of 0 tons to 5 tons.

5. The electro-permanent magnetic plate support device according to claim 1, characterized in that: Also includes: The support seat is arranged between the conductive slip ring and the electropermanent magnetic structure.

6. The electro-permanent magnetic support plate device according to claim 1, characterized in that: The conductive slip ring comprises: Conductive ring; a contact claw, provided on the inner side wall of the conductive ring body, for contacting the annular electromagnet; Wherein, each of the annular electromagnets is correspondingly provided with one contact claw.

7. The electro-permanent magnetic support plate device according to any one of claims 1 to 6, characterized in that: Also includes: A fixing piece is used to fix the electro-permanent magnetic support plate device on the bracket of the uncoiler shaft.

8. The electro-permanent magnetic support plate device according to any one of claims 1 to 6, characterized in that: The magnetic circuit conductor of the annular electromagnet is made of electrical cast steel or low carbon steel.

9. The electro-permanent magnetic support plate device according to any one of claims 1 to 6, characterized in that: The panel is a stainless steel panel, and the thickness of the stainless steel panel is 3 mm to 6 mm.

10. The electro-permanent magnetic plate support device according to any one of claims 1 to 6, characterized in that: The rangefinder is a laser rangefinder.

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