Electric permanent magnet lifting appliance and lifting method

Abstract

The invention provides an electric permanent magnet lifting appliance and a lifting method. The electric permanent magnet lifting appliance comprises a frame and at least one magnetic unit arranged in the frame, each magnetic unit comprises a shell, and a plurality of magnetic plates and auxiliary magnetic plates which are fixedly connected with the shell; the multiple magnetic plates and the multiple auxiliary magnetic plates are arranged at intervals in the first direction, the length direction of each magnetic plate and the length direction of each auxiliary magnetic plate extend in the second direction, a plurality of magnetic assemblies capable of being demagnetized are arranged below each magnetic plate, and the multiple magnetic assemblies are arranged in the second direction. According to the technical scheme, the electric permanent magnet lifting appliance is composed of the magnetic units, each magnetic unit is formed by alternately arranging the multiple magnetic plates and the auxiliary magnetic plates, the multiple magnetic assemblies are only arranged below the magnetic plates, the magnetic assemblies are placed below the magnetic plates, the height of the magnetic units is reduced, and the magnetic plates and the auxiliary magnetic plates are alternately arranged, so that the lifting efficiency of the electric permanent magnet lifting appliance is improved. The use amount of the magnetic assembly is reduced, and the production cost is reduced on the premise of the same adsorption area.

Description

Technical Field

[0001] This application relates to the field of electro-permanent magnet technology, and in particular to an electro-permanent magnet lifting device and lifting method. Background Technology

[0002] Electro-permanent magnet lifting devices are a comprehensive high-end equipment technology in the field of material handling. As lifting equipment for magnetically conductive metals, they are usually designed according to the application scenario and lifting requirements. Their design technology integrates mechanical, electrical, magnetic circuit, control, and safety factors. Taking the application of steel plate lifting on cutting machine tools (including laser, flame, plasma and other steel plate cutting lines) as an example, it is necessary to consider factors such as the type of steel plate, thickness variation, and specifications and shape. It is also necessary to consider the coordination between the lifting and cutting processes. For example, if the working efficiency of the cutting machine tool is prioritized and the amount of lifting labor is reduced, it is required that the loading process before cutting can lift the whole steel plate onto the machine tool. After cutting, the electro-permanent magnet lifting device can lift all the small parts and leftover materials cut into various shapes away from the cutting machine tool at one time. It is required that the number of missing parts and leftover materials be as small as possible, and that no parts or leftover materials be missed. The adsorption area in this process typically reaches 100 square meters. For adsorbing small parts, the more densely packed and numerous the electro-permanent magnet poles are arranged, the better, i.e., the higher the adsorption density. However, electro-permanent magnets use rare-earth permanent magnet materials such as neodymium iron boron and AlNiCo as the magnetic source. The more magnetic poles there are, the higher the manufacturing cost. Further improvements are needed to design electro-permanent magnet lifting devices that conserve magnetic source materials while ensuring operational and safety requirements. Summary of the Invention

[0003] The purpose of this invention is to provide an electro-permanent magnet lifting device and a lifting method to improve the production cost of the electro-permanent magnet lifting device.

[0004] This application provides an electro-permanent magnet lifting device, which includes: a frame and at least one magnetic unit disposed within the frame; wherein, each magnetic unit includes a housing and a plurality of magnetic plates and auxiliary magnetic plates fixedly connected to the housing; the plurality of magnetic plates and the plurality of auxiliary magnetic plates are arranged at intervals along a first direction, and the length direction of each magnetic plate and each auxiliary magnetic plate extends along a second direction, wherein the first direction is perpendicular to the second direction; Below each magnetic plate are multiple demagnetizable magnetic components, which are arranged along the second direction.

[0005] In the above technical solution, an electro-permanent magnet lifting device is composed of magnetic units, and each magnetic unit uses multiple magnetic plates and auxiliary magnetic plates arranged alternately. Multiple magnetic components are arranged only below the magnetic plates. By placing the magnetic components below the magnetic plates, the height of the magnetic unit is reduced. Furthermore, the arrangement of magnetic plates and auxiliary magnetic plates is alternating, which increases the density of the magnetic plates and reduces the amount of magnetic components used. Under the premise of the same adsorption area, the production cost is reduced.

[0006] In one specific implementation, a frame and at least one magnetic unit disposed within the frame are included; wherein each magnetic unit includes a housing and a plurality of magnetic plates and auxiliary magnetic plates fixedly connected to the housing; wherein the plurality of magnetic plates and the plurality of auxiliary magnetic plates are arranged at intervals along a first direction, and the length direction of each magnetic plate and each auxiliary magnetic plate extends along a second direction, wherein the first direction is perpendicular to the second direction. In one specific feasible embodiment, each magnetic component includes an electromagnetic element and a permanent magnet element; the electromagnetic element includes a magnetic core and an excitation coil wound around the magnetic core; wherein, When the excitation coil is energized with current in the first direction, the magnetic core and the permanent magnet have the same magnetic poles facing the magnetic plate; When the excitation coil is energized with a current in the second direction, the magnetic poles of the magnetic core and the permanent magnet are opposite to those of the magnetic plate; and the magnetic flux of the first magnetic core and the second magnetic element are approximately equal.

[0007] In one specific implementation, the frame is a rectangular frame, and two adjacent edges of the frame are parallel to the first direction and the second direction, respectively.

[0008] In one specific implementation scheme, there are multiple magnetic units, and the multiple magnetic units are arranged in an array; wherein the length directions of the magnetic plates in any adjacent magnetic units are the same or intersect.

[0009] In one specific implementation, the frame is a rectangular frame, and the length direction of the magnetic plate is inclined relative to the edge of the frame.

[0010] In one specific implementation, there are multiple magnetic units, and the multiple magnetic units are arranged in an array; wherein the magnetic poles of the multiple magnetic units are parallel to each other.

[0011] In one specific implementation, along the first direction, the width of the magnetic plate is greater than the width of the auxiliary magnetic plate.

[0012] In one specific implementation, the housing is filled with epoxy resin, and the permanent magnet and the magnetic assembly are encapsulated in the epoxy resin.

[0013] In one specific implementation, the permanent magnets corresponding to any magnetic plate have the same magnetic poles facing the magnetic plate.

[0014] In one specific implementation, a control component is also included, which is used to adjust the magnetic force of the magnetic units adsorbed at different positions on the workpiece according to the shape and center of gravity of the workpiece to be lifted.

[0015] In one specific implementation, the control component controls the magnetic force of the magnetic unit to gradually decrease along the direction from the center of gravity of the workpiece to be lifted towards the edge of the workpiece.

[0016] Secondly, a hoisting method is provided, the method employing the electro-permanent magnet hoisting device described in any of the above claims, the method comprising the following steps: Determine the shape and center of gravity of the workpiece to be hoisted; Based on the determined shape and center of gravity of the workpiece to be lifted, adjust the magnetic strength of the magnetic units adsorbed at different positions on the workpiece to be lifted; The workpiece to be lifted is hoisted using an electro-permanent magnet lifting device.

[0017] By matching the magnetic strength of the magnetic unit in the electro-permanent magnet lifting tool according to the center of gravity and shape of the workpiece being lifted, the stress on the workpiece is improved, thereby enhancing the safety of the lifting operation.

[0018] In the above technical solution, by using magnetic units to compose the electro-permanent magnet lifting device, and each magnetic unit employing multiple magnetic plates and auxiliary magnetic plates arranged alternately, with multiple magnetic components arranged only below the magnetic plates, the height of the magnetic unit is reduced by placing the magnetic components below the magnetic plates. Furthermore, the alternating arrangement of magnetic plates and auxiliary magnetic plates increases the density of the magnetic plates and reduces the amount of magnetic components used, thereby lowering production costs while maintaining the same adsorption area. In a specific feasible implementation, the step of adjusting the magnetic strength of the magnetic units adsorbed at different positions on the workpiece to be lifted, based on the determined shape and center of gravity of the workpiece, specifically includes: The magnetic force of the magnetic unit is controlled to gradually decrease along the direction from the center of gravity of the workpiece to be lifted towards the edge of the workpiece. Attached Figure Description

[0019] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments provided according to this disclosure and should not be construed as limiting the scope of this disclosure.

[0020] Figure 1 A top view of the electro-permanent magnet lifting device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the magnetic unit provided in the embodiments of this application; Figure 3and Figure 4 Reference diagram for the use of the magnetic unit provided in the embodiments of this application; Figure 5 A structural block diagram of the electronic device provided for the implementation of this application. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in one or more embodiments of this specification should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar words used in one or more embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] To facilitate understanding of the electro-permanent magnet lifting device provided in this application embodiment, its application scenario is first described. The electro-permanent magnet lifting device provided in this application embodiment is used for lifting steel plates on cutting machine tools (which can be laser, flame, plasma, or other steel plate cutting lines). Its lifting and cutting processes are coordinated, prioritizing the working efficiency of the cutting machine tool and reducing the workload of lifting. Before cutting, the loading process involves lifting the entire steel plate onto the machine tool. After cutting, the electro-permanent magnet lifting device can lift all the processed parts and leftover materials cut into various shapes away from the cutting machine tool in one go. It is required that the number of missed processed parts and leftover materials be minimized, and that no missed parts are sucked up as much as possible. Existing electro-permanent magnet lifting devices require multiple magnetic components to provide magnetic force, resulting in a large number of magnetic components.

[0024] Therefore, this application provides an electro-permanent magnet lifting tool, which can reduce the production cost of electro-permanent magnet lifting tools. The following is a detailed description of the tool with reference to the accompanying drawings and embodiments.

[0025] refer to Figure 1 and Figure 2 As shown, Figure 1 A schematic diagram of the structure of the electro-permanent magnet lifting device provided in an embodiment of this application is shown. Figure 2A cross-sectional view of the magnetic unit of the electro-permanent magnet lifting device provided in this embodiment is shown. The electro-permanent magnet lifting device provided in this embodiment includes a frame 200, which serves as a support structure to support the magnetic unit 100 of the electro-permanent magnet lifting device. The magnetic unit 100 serves as a functional component of the electro-permanent magnet lifting device for adsorbing the workpiece 300 to be lifted. A detailed description is provided below with reference to the specific accompanying drawings and embodiments.

[0026] The frame 200 provided in this embodiment can be made of metal to give it high structural strength, such as steel or iron. Additionally, the frame 200 can have a regular shape, such as a rectangle. In an optional embodiment, the frame 200 can be formed by splicing crossbeams and sub-beams. Of course, in addition to rectangles, other shapes can also be used, such as circles, ellipses, etc. When the frame 200 adopts different shapes, the shape of the magnetic unit 100 can be adjusted accordingly.

[0027] Magnetic units 100 are disposed within and fixedly connected to the frame 200 to form a complete electro-permanent magnet lifting device. The number of magnetic units 100 is at least one, such as one, two, three, or other different numbers. The specific arrangement can be determined according to actual needs.

[0028] The magnetic unit 100 provided in this embodiment includes a housing 130 and a plurality of magnetic plates 110 and auxiliary magnetic plates 120 fixedly connected to the housing 130. The housing 130 has a cavity with one open end. The magnetic plates 110 and auxiliary magnetic plates 120 are arranged at the opening of the housing 130, forming a receiving space for accommodating a magnetic component 140, which is a demagnetizable magnetic component 140. When it is necessary to attract the workpiece 300 to be lifted, the magnetic component 140 provides magnetic force; when it is necessary to lower the lifted workpiece 300, the magnetic component 140 can be demagnetized. It should be understood that the magnetic component 140 provided in this embodiment can be a common controllable demagnetizable magnetic component 140, such as an electromagnet component or an electro-permanent magnet component 141.

[0029] When specifically arranging the magnetic components 140, the magnetic components 140 are only arranged below the magnetic plate 110, and there can be multiple magnetic components 140, which can be arranged along the length of the magnetic plate 110.

[0030] In this embodiment, both the housing 130 and the auxiliary magnetic plate 120 are structures made of magnetically conductive materials, such as common magnetically conductive materials like iron and steel.

[0031] When arranging multiple magnetic plates 110 and auxiliary magnetic plates 120, the multiple magnetic plates 110 and multiple auxiliary magnetic plates 120 are spaced apart along a first direction, and the length direction of each magnetic plate 110 and each auxiliary magnetic plate 120 extends along a second direction, wherein the first direction is perpendicular to the second direction. That is, when arranging magnetic poles and auxiliary magnetic poles, the multiple auxiliary magnetic plates 120 and magnetic plates 110 are spaced apart along their width direction.

[0032] In use, since both the housing 130 and the auxiliary magnetic plate 120 are magnetic, they can also attract the workpiece 300 to be hoisted. Thus, under the premise of using the same number of magnetic components 140, the adsorption area can be increased by using the housing 130 and the auxiliary magnetic plate 120. Alternatively, it can be understood that under the premise of the same adsorption area, the amount of magnetic components 140 used can be reduced.

[0033] As can be seen from the above description, the electro-permanent magnet lifting device provided in this application embodiment is composed of magnetic units 100, and each magnetic unit 100 uses multiple magnetic plates 110 and auxiliary magnetic plates 120 arranged alternately. Multiple magnetic components 140 are arranged only below the magnetic plates 110. By placing the magnetic components 140 below the magnetic plates 110, the height of the magnetic unit 100 is reduced. Furthermore, the alternating arrangement of the magnetic plates 110 and auxiliary magnetic plates 120 increases the arrangement density of the magnetic plates and reduces the amount of magnetic components 140 used. Under the premise of the same adsorption area, the production cost is reduced.

[0034] In the scheme disclosed in this application, the housing 130 and the magnetic plate 110 are simple to process. The surrounding plate and bottom plate of the housing 130 can be directly welded from magnetically conductive steel plates. The magnetic plate 110 and the auxiliary magnetic plate 120 are both welded to the housing 130, which can reduce the weight of the magnetic unit 100 while increasing the strength of the magnetic unit 100, reducing the deformation of the magnetic unit 100 under full load, and making the magnetic unit 100 stronger.

[0035] In addition, the magnetic lines of force emitted by the permanent magnet 141 under the magnetic plate 110 can be radiated to the side through the bottom plate of the housing 130, forming separate magnetic circuits with the magnetically conductive bottom plate and the auxiliary magnetic plate 120 respectively. The bottom plate of the magnetic pole unit can be made thinner, which helps to reduce the weight of the magnet.

[0036] When using the above magnetic circuit design, the magnetic flux attenuation of magnetic plate 110 and auxiliary magnetic plate 120 is relatively small. Under the same minimum magnetic density requirement and minimum leakage size, the permanent magnet per unit area of ​​the magnetic unit 100 of this application can cover a larger lifting area. That is, compared with the prior art that simply diffuses the magnetic lines of force by using magnetic plates 110 of various shapes, the area that the magnetic plate 110 of the magnetic unit 100 in this embodiment can cover is larger without reducing the magnetic density.

[0037] Continue to refer to Figure 1 As shown, the magnetic component 140 provided in this embodiment can be an electro-permanent magnetic component, which includes an electromagnetic element 142 and a permanent magnet element 141. The electromagnetic element 142 includes a magnetic core 1422 and an excitation coil 1421 wound around the magnetic core 1422. The excitation coil 1421 can be excited by different excitation currents to make the magnetic core 1422 generate magnetism. For example, when the excitation coil 1421 is energized with a current in a first direction, the magnetic poles of the magnetic core 1422 and the permanent magnet element 141 facing the magnetic plate 110 are the same; when the excitation coil 1421 is energized with a current in a second direction, the magnetic poles of the magnetic core 1422 and the permanent magnet element 141 facing the magnetic plate 110 are opposite; and the magnetic flux of the first magnetic core 1422 and the second magnetic element 142 is approximately equal.

[0038] like Figure 4 As shown, when the excitation coil 1421 is energized with current in the first direction, the magnetic core 1422 and the permanent magnet 141 have the same magnetic poles facing the magnetic plate 110. At this time, the magnetic lines of force of the magnetic assembly 140 and the permanent magnet 141 can pass through the magnetic plate 110, thereby jointly attracting the workpiece 300. Figure 3 As shown, when the excitation coil 1421 is energized with a current in the second direction, the magnetic poles of the magnetic core 1422 and the permanent magnet 141 facing the magnetic plate 110 are opposite. At this time, the magnetic poles of the magnetic assembly 140 and the permanent magnet 141 facing the magnetic plate 110 are opposite, thereby confining the magnetic lines of force within the magnetic plate 110. In this state, the electro-permanent magnet 141 unit exhibits demagnetization.

[0039] It should be understood that the current in the aforementioned direction and the second direction can be positive current and negative current, and the specific selection can be made according to the actual arrangement of the magnetic component 140 and the permanent magnet 141.

[0040] Furthermore, in the above solution, the permanent magnet 141 is located below the magnetic plate 110. Compared to the prior art where the neodymium iron boron magnet is mounted on the side of the magnetic plate 110, this reduces the area of ​​the magnetic unit. While there may be a slight height difference between the magnetic assembly 140 and the permanent magnet 141, this structure significantly reduces the height of the magnetic unit 100. Meanwhile, the magnetic pole direction of the permanent magnet 141 is the same as that of the magnetic assembly 140. Compared with the case where the magnetic poles of the two magnetic components 142 in the magnetic unit 100 in the prior art are perpendicular to each other, this can better improve the demagnetization and adsorption effect on the workpiece 300. Furthermore, the magnetic pole structure is simple and suitable for mass production. The auxiliary magnetic plate 120, magnetic plate 110, and housing 130 are all produced by mold making. The magnetic unit 100 becomes a simple modular assembly. This ensures stable and reliable quality while significantly reducing production costs.

[0041] In an alternative embodiment, the excitation coil 1421 is fixedly mounted to the periphery of the magnetic core 1422 via an insulating frame. The excitation coil 1421 magnetizes the magnetic core 1422 with a positive or negative current, or demagnetizes the magnetic assembly 140 with the opposite current.

[0042] In an alternative embodiment, the magnetic core 1422 described above can be made of AlNiCo magnet or other reversible magnets. The permanent magnet can be made of neodymium iron boron magnet or other irreversible magnets.

[0043] In one alternative embodiment, the permanent magnet 141 can be a single integral structure or a modular structure. For example, when the permanent magnet 141 is a single integral structure, it is a closed ring structure or a ring structure with a certain gap, but it is a single component. When the permanent magnet 141 is a modular structure, it has multiple sub-magnetic components 140, and the multiple sub-magnetic components 140 are arranged at intervals around the magnetic component 140. For example, when neodymium iron boron magnets are used, it has multiple neodymium iron boron magnets.

[0044] In an optional embodiment, the frame 200 provided in this application is a rectangular frame 200, and the two adjacent edges of the frame 200 are parallel to the first direction and the second direction, respectively. That is, a rectangular frame 200 is used to support the magnetic unit 100. In a specific arrangement, the magnetic plate 110 and the auxiliary magnetic plate 120 in the electromagnetic unit are also parallel to one edge of the frame 200.

[0045] When there are multiple magnetic units 100, they are arranged in an array; wherein the length directions of the magnetic plates 110 in any adjacent magnetic unit 100 are the same or intersecting. For example, when the magnetic units 100 are arranged within the frame 200, the arrangement directions of the magnetic plates 110 in different magnetic units 100 are the same or intersecting. In one arrangement, the arrangement directions of the magnetic plates 110 in different magnetic units 100 are consistent. In another arrangement, the arrangement directions of the magnetic plates 110 in different magnetic units 100 are inconsistent, that is, there may be cases where the arrangement directions intersect, such as the included angle between them being different angles such as 30°, 45°, 60°, 90°, etc. When the included angle is 90°, that is, the arrangement directions of the magnetic plates 110 in different magnetic units 100 are perpendicular to each other.

[0046] When the length directions of the magnetic plates 110 of adjacent magnetic units 100 are perpendicular to each other, the length direction of the magnetic plates 110 of any magnetic unit 100 is a continuous magnetic pole without breaks. Although the magnetic plates 110 are arranged in parallel, the adjacent magnetic units 100 are rotated 90 degrees to ensure that the adjacent magnetic pole units are also long and continuous magnetic poles in the 90-degree rotation direction, which can reduce the amount of missed suction. For example, assuming the length and width of the magnetic unit 100 are 500*500mm, and the distance between the magnetic plate 110 and the auxiliary magnetic plate 120 is 40mm, by using the alternating extension of the magnetic unit 100 rotated 90 degrees and the standard magnetic unit 100, the adsorption area can reach 100 square meters. As long as the length dimension exceeds the size of the magnetic unit 100 (500mm), even if the width dimension is only 1mm, there will be no missed suction. This ensures that any small loose material is adsorbed, better meeting the requirements of the steel plate lifting tool for the wire cutting machine and solving the problem of the original lifting tool missing long and loose materials.

[0047] Of course, in addition to the above arrangement, other arrangements can also be used. The frame 200 is a rectangular frame 200, and the length direction of the magnetic plate 110 is inclined relative to the edge of the frame 200. That is, the length direction of the magnetic plate 110 is inclined relative to the edge of the frame 200. For example, the inclination angle is different, such as 30°, 40°, 60°, etc.

[0048] In one alternative arrangement, when there are multiple magnetic units 100, they are arranged in an array, with the magnetic poles of the multiple magnetic units 100 parallel to each other. That is, the multiple magnetic plates 110 are arranged in the same direction. Of course, in addition to the above arrangement, different magnetic units 100 can also be arranged with their magnetic plates 110 facing opposite directions. For example, if the length direction of the magnetic plate 110 of one magnetic unit 100 is tilted 30° to the left relative to the edge of the uniform frame 200, then the length direction of the magnetic plate 110 of the adjacent magnetic unit 100 is tilted 30° to the right.

[0049] It should be understood that, in addition to the arrangement direction of the magnetic plate 110 of the magnetic unit 100 in the example above, other arrangement methods can be selected as needed, which will not be described in detail here.

[0050] In one alternative embodiment, the magnetic plate 110 and the auxiliary magnetic plate 120 provided in this application have different widths. For example, along the first direction, the width of the magnetic plate 110 is greater than the width of the auxiliary magnetic plate 120. When arranged in this way, it can be ensured that the auxiliary magnetic plate 120 not only assists in magnetic conduction, but also maximizes the density of magnetic lines of force to ensure its attraction force.

[0051] The magnetic component 140 and permanent magnet 141 of the magnetic unit 100 provided in this application embodiment are both fixed inside the housing 130. When fixing, epoxy resin can be filled inside the housing 130 to encapsulate the permanent magnet 141 and magnetic component 140 through epoxy resin, thereby improving the overall sealing performance.

[0052] In one alternative scheme, when there are multiple magnetic components 140 corresponding to the magnetic plates 110 of the magnetic unit 100, the permanent magnets 141 corresponding to any magnetic plate 110 have the same magnetic pole facing the magnetic plate 110. For example, all of them have the N pole facing the magnetic plate 110, or all of them have the S pole facing the magnetic plate 110. When this method is adopted, mutual attraction between adjacent permanent magnets 141 can be avoided, ensuring the effect of demagnetization. Alternatively, adjacent permanent magnets 141 can have opposite magnetic poles facing the magnetic plate 110, but in this state, the distance between adjacent permanent magnets 141 and their corresponding electromagnetic components is smaller than the distance between two adjacent permanent magnets 141.

[0053] In one alternative, when the permanent magnet 141 faces the same magnetic pole toward the magnetic plate 110, the portions of the magnetic elements 142 in two adjacent magnetic assemblies 140 that are close to each other can be shared.

[0054] The electro-permanent magnet lifting device provided in this application embodiment also includes a control component for controlling the magnetic force of the electro-permanent magnet lifting device. For example, the control component is used to adjust the magnetic force of the magnetic units 100 adsorbed at different positions on the workpiece 300 to be lifted according to the shape and center of gravity of the workpiece 300. Specifically, the electromagnetic force adsorbed by the electro-permanent magnet lifting device varies depending on the shape and center of gravity of the workpiece 300. In this application embodiment, the magnetic force of the corresponding magnetic unit 100 can be adjusted by the adsorption position of the electro-permanent magnet lifting device when adsorbing the workpiece 300 and the shape of the workpiece 300. When adjusting the magnetic force, different magnitudes of current can be applied to excite different magnetic forces to the magnetic component 140. In specific control, the magnetic force of the magnetic unit 100 can be adjusted by adjusting the excitation current corresponding to the magnetic unit 100 adsorbed at different positions on the workpiece 300 to be lifted according to the shape and center of gravity of the workpiece 300.

[0055] In specific control, the magnetic unit 100 located in different areas such as the center of gravity and the edge can be controlled to apply different adsorption forces. For example, the control component controls the magnetic force of the magnetic unit 100 to gradually decrease along the direction from the center of gravity of the workpiece 300 to the edge of the workpiece 300 to be lifted. This reduces power consumption while maintaining sufficient adsorption force.

[0056] This application embodiment also provides a hoisting method, the method employing the electro-permanent magnet hoisting tool described in any of the above claims, the method comprising the following steps: Step 001: Determine the shape and center of gravity of the workpiece 300 to be hoisted; Specifically, the center of gravity of the workpiece 300 can be calculated based on its shape, mass, etc.

[0057] Step 002: Based on the determined shape and center of gravity of the workpiece 300 to be lifted, adjust the magnetic strength of the magnetic units 100 adsorbed at different positions on the workpiece 300 to be lifted; Specifically, the magnetic force of the magnetic unit 100 is controlled to gradually decrease along the direction from the center of gravity of the workpiece 300 to its edge. Please refer to the relevant description in the structure for details.

[0058] Step 003: The workpiece 300 to be lifted is hoisted using an electro-permanent magnet lifting device.

[0059] By matching the magnetic strength of the magnetic unit 100 in the electro-permanent magnet lifting device with the center of gravity and shape of the lifting workpiece 300, the stress on the lifting workpiece 300 is improved, thereby enhancing the safety of the lifting operation.

[0060] In the above technical solution, by using magnetic units to compose the electro-permanent magnet lifting device, and each magnetic unit employing multiple magnetic plates and auxiliary magnetic plates arranged alternately, the requirement for a large adsorption area can be met. Furthermore, multiple magnetic components are arranged only below the magnetic plates, reducing the height of the magnetic unit by placing the magnetic components below the magnetic plates. The alternating arrangement of magnetic plates and auxiliary magnetic plates increases the density of the magnetic plates and reduces the amount of magnetic components used, thereby lowering production costs while maintaining the same adsorption area.

[0061] The following example illustrates the technical advantages of the electro-permanent magnet lifting device disclosed in this application compared to existing electro-permanent magnet units: When this electro-permanent magnet lifting device is used to adsorb a steel plate with a thickness of 60mm, and the adsorption area needs to reach 100 square meters with a length of 50*50mm for the adsorbed small parts, the amount of magnetic components used is reduced by 30% to 60%, effectively reducing the self-weight of the lifting device. The electro-permanent magnet lifting device provided in this application can also be standardized and mass-produced, adaptable to automated production processes, efficient and convenient, increasing product competitiveness and market scale.

[0062] This application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements a method for performing any of the above possible designs.

[0063] This application also provides a non-transitory computer-readable storage medium that stores computer instructions for causing a computer to execute any of the above-described possible designs.

[0064] This application also provides a computer program artifact 300, including instructions that, when run on a computer, cause the computer to execute any of the above-described possible designs.

[0065] Furthermore, the technical effects of any of the above possible design approaches can be found in [reference needed]. Figure 3 The effects of different design approaches in the example section will not be elaborated here.

[0066] Figure 5 This embodiment illustrates a more specific hardware structure of an electronic device. The device may include a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, memory 1020, input / output interface 1030, and communication interface 1040 are interconnected internally via the bus 1050.

[0067] The processor 1010 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0068] The memory 1020 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 can store the operating system 100 and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program code is stored in the memory 1020 and is called and executed by the processor 1010.

[0069] The input / output interface 1030 is used to connect input / output modules to realize information input and output. Input / output modules can be configured as components within the device (not shown in the figure) or externally connected to the device to provide corresponding functions. Input devices may include keyboards, mice, touchscreens, microphones, various sensors, etc., while output devices may include displays, speakers, vibrators, indicator lights, etc.

[0070] The communication interface 1040 is used to connect a communication module (not shown in the figure) to enable communication between this device and other devices. The communication module can communicate via wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0071] Bus 1050 includes a pathway for transmitting information between various components of the device, such as processor 1010, memory 1020, input / output interface 1030, and communication interface 1040.

[0072] It should be noted that although the above-described device only shows the processor 1010, memory 1020, input / output interface 1030, communication interface 1040, and bus 1050, in specific implementations, the device may also include other components necessary for normal operation. Furthermore, those skilled in the art will understand that the above-described device may only include the components necessary for implementing the embodiments of this specification, and not necessarily all the components shown in the figures.

[0073] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, programmable random access memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.

[0074] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this disclosure, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this specification, which are not provided in detail for the sake of brevity.

[0075] Additionally, to simplify the description and discussion, and to avoid obscuring one or more embodiments of this specification, the provided drawings may or may not show well-known power / ground connections to integrated circuit (IC) chips and other components. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring one or more embodiments of this specification, and this also takes into account the fact that the details of implementation of these block diagram apparatuses are highly dependent on the platform on which one or more embodiments of this specification will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuits) have been set forth to describe exemplary embodiments of this disclosure, it will be apparent to those skilled in the art that one or more embodiments of this specification may be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0076] Although this disclosure has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0077] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the scope of protection of this disclosure.

[0078] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electro-permanent magnet lifting device, characterized in that, include: A frame and at least one magnetic unit disposed within the frame; wherein each magnetic unit includes a housing and a plurality of magnetic plates and auxiliary magnetic plates fixedly connected to the housing; the plurality of magnetic plates and the plurality of auxiliary magnetic plates are spaced apart along a first direction, and the length direction of each magnetic plate and each auxiliary magnetic plate extends along a second direction, wherein the first direction is perpendicular to the second direction; Below each magnetic plate are multiple demagnetizable magnetic components, which are arranged along the second direction.

2. The electro-permanent magnet lifting device according to claim 1, characterized in that, Each magnetic component includes an electromagnetic element and a permanent magnet element; the electromagnetic element includes a magnetic core and an excitation coil wound around the magnetic core; wherein, When the excitation coil is energized with current in the first direction, the magnetic core and the permanent magnet have the same magnetic poles facing the magnetic plate; When the excitation coil is energized with a current in the second direction, the magnetic poles of the magnetic core and the permanent magnet are opposite to those of the magnetic plate; and the magnetic flux of the first magnetic core and the second magnetic element are approximately equal.

3. The electro-permanent magnet lifting device according to claim 1, characterized in that, The frame is a rectangular frame, and two adjacent edges of the frame are parallel to the first direction and the second direction, respectively.

4. The electro-permanent magnet lifting device according to claim 3, characterized in that, The number of magnetic units is multiple, and the multiple magnetic units are arranged in an array; wherein, the length directions of the magnetic plates in any adjacent magnetic units are the same or intersect.

5. The electro-permanent magnet lifting device according to claim 1, characterized in that, The frame is a rectangular frame, and the length direction of the magnetic plate is inclined relative to the edge of the frame.

6. The electro-permanent magnet lifting device according to claim 5, characterized in that, The number of magnetic units is multiple, and the multiple magnetic units are arranged in an array; wherein the magnetic poles of the multiple magnetic units are parallel to each other.

7. The electro-permanent magnet lifting device according to any one of claims 1 to 5, characterized in that, Along the first direction, the width of the magnetic plate is greater than the width of the auxiliary magnetic plate, and the permanent magnets corresponding to any magnetic plate have the same magnetic poles facing the magnetic plate.

8. The electro-permanent magnet lifting device according to claim 7, characterized in that, The housing is filled with epoxy resin, and the permanent magnet and the magnetic components are encapsulated in the epoxy resin.

9. The electro-permanent magnet lifting device according to claim 7, characterized in that, It also includes a control component, which is used to adjust the magnetic force of the magnetic units adsorbed at different positions on the workpiece to be lifted according to the shape and center of gravity of the workpiece to be lifted. The control component controls the magnetic force of the magnetic units to gradually decrease along the direction from the center of gravity of the workpiece to the edge of the workpiece to be lifted.

10. A hoisting method, characterized in that, The method employs the electro-permanent magnet lifting device as described in any one of claims 1 to 9, and the method includes the following steps: Determine the shape and center of gravity of the workpiece to be hoisted; Based on the determined shape and center of gravity of the workpiece to be lifted, adjust the magnetic strength of the magnetic units adsorbed at different positions on the workpiece to be lifted; The magnetic force of the magnetic unit is controlled to gradually decrease along the direction from the center of gravity of the workpiece to be lifted towards the edge of the workpiece. The workpiece to be lifted is hoisted using an electro-permanent magnet lifting device.

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