Electric permanent magnet backup plate device

Abstract

The invention provides an electro-permanent magnet backup plate device, a mounting hole is formed in the middle of the electro-permanent magnet backup plate device, the electro-permanent magnet backup plate device is connected to a rotating shaft of an uncoiler through the mounting hole, and the electro-permanent magnet backup plate device comprises an electro-permanent magnet structure, and a plurality of annular electromagnets are sequentially arranged in the radial direction of the mounting hole; the panel is connected to the magnetic passing end of the electric permanent magnet structure and used for abutting against the steel coil; the conductive slip ring is connected to the non-magnetic end of the electric permanent magnet structure and is used for magnetizing or demagnetizing the electric permanent magnet structure; the range finder is used for measuring the outer diameter change size of the steel coil in the uncoiling operation; and the controller is used for controlling the conductive slip ring to magnetize the annular electromagnet corresponding to the non-uncoiled part of the steel coil according to the outer diameter change size detected by the range finder, so that the non-uncoiled part of the steel coil is adsorbed on the panel, slippage is avoided, and damage to the end surface of the edge part of the steel coil is reduced. And the conductive slip ring is controlled to demagnetize the annular electromagnet corresponding to the uncoiling part so as to lose the attraction force on the uncoiling steel belt, so that the normal threading operation is ensured.

Description

Technical Field

[0001] The present invention 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 magnet 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 layers of the steel coil. After the high-temperature process, the moisture of the magnesium oxide between the steel coil layers is dried and lost, resulting in gaps between each layer of steel strip. The powdery substance sintered by the magnesium oxide between the layers causes the steel coil to slip easily. After high-temperature annealing, the steel coil becomes softer, and the entire steel coil is in the shape of tofu. When uncoiling in the next process, it will slip, causing damage to the edge and end face of the steel coil.

[0003] In the related technology, there are two commonly used technologies. The first is a double baffle structure with inner and outer panels, which can only stop the steel coil when it slips. For heavy 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 is easy to 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 to use a left and right double uncoiler to clamp the steel coil from the left and right ends of the steel coil. The main problems are the opening synchronization difference 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 end face of the steel coil when unwinding.

[0004] Therefore, it is necessary to propose an electro-permanent magnetic plate support 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 plate support device.

[0007] In view of this, according to an embodiment of the present disclosure, an electric permanent magnet backing plate device is proposed, wherein a mounting hole is provided in the middle of the electric permanent magnet backing plate device, and the electric permanent magnet backing plate device is used to be connected to the uncoiler rotating shaft through the mounting hole, and the electric permanent magnet backing plate device comprises:

[0008] The electric permanent magnet structure has 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 above-mentioned 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 implementation manner, the electro-permanent 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 implementation manner, there are three annular electromagnets, which are arranged in sequence along 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] Four of the gaps are provided so that the orthographic projection of the electro-permanent magnetic structure along the axial direction 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 also 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 above-mentioned conductive slip ring includes:

[0020] Conductive ring body;

[0021] A contact claw, arranged on the inner side wall of the conductive ring body, for contacting 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 also includes:

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

[0025] In a feasible implementation manner, the magnetic circuit conductor 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 above-mentioned rangefinder is a laser rangefinder.

[0028] Compared with the prior art, the present invention at least includes the following beneficial effects: the middle part of the electro-permanent magnetic plate device provided by the embodiment of the present invention is provided with a mounting hole, and the electro-permanent magnetic plate device is mounted on the uncoiler shaft through the mounting hole. The electro-permanent magnetic plate device is provided with an electro-permanent magnetic structure, a panel, a conductive slip ring, a distance meter and a controller. Among them, the electro-permanent magnetic structure is provided with a plurality of annular electromagnets along the radial direction of the mounting hole, and the plurality of annular electromagnets are arranged in sequence. The panel is connected to the magnetic end of the electro-permanent magnetic structure. After the electro-permanent magnetic plate device is installed on the uncoiler shaft, the expansion and contraction reel is connected to the uncoiler shaft, and the steel coil is arranged on the expansion and contraction reel to complete the installation of the steel coil. The panel abuts against the steel coil to avoid the steel coil from rubbing against the electro-permanent magnetic structure, damaging the electro-permanent magnetic structure, and extending the service life of the electro-permanent magnetic structure. The conductive slip ring is connected to the non-magnetic end of the electro-permanent magnetic structure, and the conductive slip ring can be used to magnetize or demagnetize different annular electromagnets in a targeted manner. The distance meter can measure the change in the outer diameter of the steel coil during the unwinding process, so as to accurately grasp the degree of unwinding. The controller can detect the change in the outer diameter of the steel coil according to the distance meter, so as to control the conductive slip ring to magnetize or demagnetize the corresponding annular electromagnet. Specifically, the unwinder reel can drive the permanent magnet plate device and the expansion and contraction reel to rotate synchronously, and the conductive slip ring is controlled to magnetize the annular electromagnet corresponding to the unwinding part of the steel coil to ensure that the unwinding part of the steel coil can be adsorbed and flattened on the panel. The panel and the unwinding part of the steel coil rotate synchronously to avoid slippage, reduce damage to the edge and end face of the steel coil, and improve the product qualification rate. In addition, the conductive slip ring is controlled to demagnetize the annular electromagnet corresponding to the unwinding part of the steel coil to lose the suction force on the unwinding steel strip on the outer layer of the steel coil, reduce the wear of the unwinding steel strip on the panel, ensure the normal threading operation, and improve reliability. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0031] Figure 2 A schematic assembly diagram of an electric permanent magnetic plate support 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 invention.

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

[0034] 100 electric permanent magnet support plate device, 110 electric permanent magnet 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 used to help understand the present invention, but does not constitute a limitation of the present invention. The specific structures and functional details disclosed herein are only used to describe the 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 electric permanent magnet plate device 100 is proposed, a mounting hole is provided in the middle of the electric permanent magnet plate device 100, and the electric permanent magnet plate device 100 is used to be connected to the uncoiler shaft 200 through the mounting hole. The electric permanent magnet plate device 100 includes: an electric permanent magnet structure 110, and a plurality of annular electromagnets 111 are sequentially arranged along the radial direction of the mounting hole; a panel 120, connected to the magnetic end of the electric permanent magnet structure 110, and used to abut against the steel coil 220; a conductive slip ring 130, connected to the non-magnetic end of the electric permanent magnet structure 110, and used to magnetize or demagnetize the electric permanent magnet structure 110; a distance meter 140, used to measure the outer diameter change size of the steel coil 220 during the uncoil operation; a controller, used to control the conductive slip ring 130 to magnetize or demagnetize different annular electromagnets 111 according to the outer diameter change size detected by the distance meter 140.

[0037] It can be understood that a mounting hole is provided in the middle of the electric permanent magnet plate device 100 provided in the embodiment of the present disclosure, and the electric permanent magnet plate device 100 is installed on the uncoiler shaft 200 through the mounting hole. The electric permanent magnet plate device 100 is provided with an electric permanent magnet structure 110, a panel 120, a conductive slip ring 130, a rangefinder 140 and a controller. Among them, the electric permanent magnet 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 of the axial direction of the mounting hole, the outer diameter of the plurality of annular electromagnets 111 gradually decreases from the direction away from the mounting hole to the direction close to the mounting hole. The panel 120 is connected to the magnetic end of the permanent magnet structure 110. After the permanent magnet plate device 100 is installed on the uncoiler shaft 200, the expansion and contraction reel 210 is connected to the uncoiler shaft 200, and the steel coil 220 is set on the expansion and contraction reel 210 to complete the installation of the steel coil 220. The panel 120 abuts against the steel coil 220 to avoid the steel coil 220 from rubbing against the permanent magnet structure 110, damaging the permanent magnet structure 110, and extending the service life of the permanent magnet structure 110. The conductive slip ring 130 is connected to the non-magnetic end of the permanent 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 change in the outer diameter of the steel coil 220 during the unwinding operation, so as to accurately grasp the degree of unwinding. The controller can detect the outer diameter change size of the steel coil 220 according to the distance meter 140, thereby controlling the conductive slip ring 130 to magnetize or demagnetize the corresponding annular electromagnet 111. Specifically, the uncoiler reel 200 can drive the permanent magnet plate device 100 and the expansion and contraction reel 210 to rotate synchronously, and the conductive slip ring 130 is controlled to magnetize the annular electromagnet 111 corresponding to the unrolled part of the steel coil 220 to ensure that the unrolled part of the steel coil 220 can be adsorbed and flattened on the panel 120, and the panel 120 and the unrolled part of the steel coil 220 rotate synchronously to avoid slippage, reduce damage to the edge end face of the steel coil 220, and improve the product qualification rate. And the conductive slip ring 130 is controlled to demagnetize the annular electromagnet 111 corresponding to the unrolled part of the steel coil 220, so as to lose the suction force on the unrolled steel strip on the outer layer of the steel coil 220, reduce the wear of the unrolled steel strip on the panel 120, ensure the normal threading operation, and improve 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 to form adsorption capacity, which does not require long-term power supply and has an energy-saving effect.

[0038] It should be noted that through holes are opened in the middle of the electro permanent magnet structure 110, the panel 120 and the conductive slip ring 130. The electro permanent magnet structure 110, the panel 120 and the conductive slip ring 130 are coaxially arranged. After the electro permanent 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 electric permanent magnet 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 unwinder 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 the electric permanent magnetic plate device 100 at about 10 mm. 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 electric permanent magnetic plate device 100, generating an attractive force to suck the side end face of the steel coil 220 and the panel 120 together, and repeatedly charging and discharging for 3 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 unwinder 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 adsorb the side end surface of the steel coil 220 and close it to the surface of the panel 120; when the outer steel strip of the steel coil 220 is unwound, the controller controls the conductive slip ring 130 to power off and demagnetize the outermost annular electromagnets 111, and the outermost steel strip with a thickness of about 200 mm loses its suction and begins to be threaded; at this time, the inner and outer steel strips are The middle steel coil 220 is still tightly adsorbed on 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 off and demagnetized to ensure that the steel strip threading operation can continue, and 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 to ensure that the inner ring of steel coil 220 does not slip; when the distance meter 140 measures that the outer diameter of steel coil 220 is less than 1400mm, that is, when the distance meter 140 measures that the outer diameter of steel coil 220 is less than the outer diameter of the innermost ring of annular electromagnet 111, the controller controls the conductive slip ring 130 to demagnetize all annular electromagnets 111 until the tail of the strip is unrolled. At this time, the strip is pulled by the clamping roller, and the tension of the strip has tightly wound the small tail roll remaining on the surface of the roll on the roll, and no slip will occur. The electric permanent magnet 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, which effectively controls the slip of steel coil 220, reduces the damage to the edge of the strip and the inner layer wrinkles caused by interlayer slippage, and greatly improves 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 electro permanent 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 is understandable that, in the radial direction of the mounting hole, the electro-permanent magnetic structure 110 is provided with a plurality of gaps 112, and the plurality of gaps 112 are arranged axially symmetrically with the central axis of the mounting hole as the symmetry axis. In this arrangement, no magnetic force is generated at the gaps 112 of the electro-permanent magnetic structure 110, thereby reducing the adsorption force on the steel strip at the gaps 112, so that the unrolled steel strip will not be always adsorbed on the panel 120 to cause edge scratches.

[0043] In some examples, such as Figures 1 to 3 As shown, there are three annular electromagnets 111, which are arranged along the radial direction of the mounting hole, from away from the mounting hole to close to the mounting hole, as outer ring electromagnet 1111, middle ring electromagnet 1112 and inner ring electromagnet 1113 in sequence; 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 can be understood that there can be three annular electromagnets 111. Specifically, along the radial direction of the mounting hole, from the direction away from the mounting hole to the direction close to the mounting hole, an outer ring electromagnet 1111, a middle ring electromagnet 1112 and an inner ring electromagnet 1113 are sequentially arranged, that is, the inner diameter of the outer ring electromagnet 1111 is larger than the outer diameter of the middle ring electromagnet 1112; 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 unwinding operation of the steel coil 220, the controller can control the conductive slip ring 130 to deenergize and demagnetize the outer ring electromagnet 1111, the middle ring electromagnet 1112 and the inner ring electromagnet 1113 in turn according to the change in the outer diameter of the steel coil 220 detected by the distance meter 140, so as to ensure that the unwinding portion of the steel coil 220 remains in close contact with the panel 120 to avoid slippage and reduce damage to the edge end face of the steel coil 220. At the same time, the suction force on the outermost layer of the steel coil 220 that is being unwinded is lost, so as to ensure that the threading operation proceeds normally.

[0045] It is understandable that four gaps 112 may be provided so that the orthographic projection of the electro-permanent magnetic structure 110 along the axis direction 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-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 seat 150, which is arranged between the above-mentioned conductive slip ring 130 and the above-mentioned electric permanent magnet structure 110.

[0049] It is understandable that the electric permanent magnet plate device 100 is also provided with a support seat 150. Specifically, the support seat 150 is provided between the conductive slip ring 130 and the electric permanent magnet structure 110, and a through hole is provided in the middle of the support seat 150 so that the support seat 150 can be sleeved on the uncoiler shaft 200, and the electric permanent magnet plate device 100 is supported by the support seat 150 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 arranged 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 can be 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 sleeve with a through hole in the middle. The contact claw 132 can be arranged at the inner wall of the conductive ring body 131, extending from the conductive ring body 131, so as to contact the annular electromagnet 111, thereby supplying power to magnetize or demagnetize the annular electromagnet 111. 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, so as to realize 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 also includes: a fixing member for fixing the above-mentioned permanent magnetic plate device 100 on the bracket of the above-mentioned uncoiler shaft 200.

[0053] It is understandable that the electric permanent magnetic plate support device 100 is also provided with a fixing member, through which the electric permanent magnetic plate support device 100 is fixed to the cross head support of the uncoiler rotating shaft 200 .

[0054] Exemplarily, the fixing member may be an M26 bolt, and the electric permanent magnetic 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 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 above-mentioned ring-grade electromagnet is 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 understandable that the panel 120 can be made of stainless steel to have good wear resistance, no rust, and extend the service life. The thickness of the stainless steel panel 120 can be 3mm to 6mm, which ensures good mechanical properties while ensuring the adsorption force of the annular electromagnet 111 on the steel coil 220 through the panel 120, thereby improving reliability. The diameter of the panel 120 can be selected according to the outer diameter of the steel coil 220. For example, the diameter of the panel 120 can be 1900mm.

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

[0059] It is understandable that the rangefinder 140 may be a laser rangefinder, which can be placed at the reel section of the steel coil 220 to measure the outer diameter of the steel coil 220 in a non-contact manner. This is convenient, reliable and highly safe to use.

[0060] It should be understood that the terms first, second, etc. are only used to distinguish descriptions and should not be understood as indicating or suggesting relative importance. Although the terms first, second, etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another unit. For example, the first unit may be referred to as the second unit, and similarly, the second unit may be referred to as the first unit 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 relationship between associated objects, 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 next 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 that are customarily placed when the disclosed product is used, or are orientations or positional relationships that are customarily 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 is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" 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 a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] The terms used herein are only used 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 the opposite meaning. It should also be understood that the terms "include", "comprising", "including", and / or "comprising" when used herein specify the existence of the claimed features, integers, steps, operations, units, and / or components, and do not exclude the existence or increase of one or more other features, quantities, steps, operations, units, components, and / or their combinations.

[0065] Specific details are provided in the following description to facilitate a complete understanding of the exemplary embodiments. However, it should be understood by those of ordinary skill in the art that the exemplary embodiments may be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may not be shown in unnecessary detail to avoid making the exemplary embodiments unclear.

[0066] The above is only a specific implementation of the present application, so that those skilled in the art can 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 can 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 will conform to the widest range consistent with the principles and novel features applied for herein.

[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 the prior art known to ordinary technicians in the field.

Claims

1. An electric permanent magnetic plate device, characterized in that: A mounting hole is provided in the middle of the electric permanent magnetic plate device, and the electric permanent magnetic plate device is used to be connected to the uncoiler shaft through the mounting hole. The electric permanent magnetic plate device includes: The electro-permanent magnetic structure has a plurality of annular electromagnets arranged in sequence along the radial direction of the mounting hole; A panel connected to the magnetic end of the electro-permanent magnetic structure and used for abutting against the steel coil; 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; A distance meter, used to measure the change in the 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 distance meter.

2. The electric permanent magnetic plate device according to claim 1, characterized in that: Along the radial direction of the mounting hole, the electro-permanent 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 electric permanent magnetic plate support device according to claim 2, characterized in that: There are three annular electromagnets, which are arranged in sequence along the radial direction of the mounting hole, from the direction away from the mounting hole to the direction close to the mounting hole, as an outer ring electromagnet, a middle ring electromagnet and an inner ring electromagnet; There are four gaps so that the orthographic projection of the electropermanent magnetic structure along the axial direction of the mounting hole is in the shape of a "cross".

4. The electric permanent magnetic plate support device according to claim 3 is 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 electro-permanent magnetic structure.

6. The electro-permanent magnetic plate support device according to claim 1, characterized in that: The conductive slip ring comprises: Conductive ring body; A contact claw, arranged 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 of the contact claws.

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

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

9. The electric permanent magnetic plate support 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 electric 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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