Intelligent annular conveying line based on magnetic suspension technology

Abstract

The intelligent annular conveying line based on the magnetic suspension technology comprises a conveying table, an annular guide rail is installed on the conveying table, a rotor is arranged on the annular guide rail in a sliding mode, the rotor is dragged by a magnetic suspension traction mechanism to move, and a workpiece base is fixedly installed at the upper end of the rotor; a plurality of adsorption holes are formed in the upper end of the workpiece seat, a driving groove is formed in the side wall of the workpiece seat, and a negative pressure mechanism for generating negative pressure in the adsorption holes is installed in the driving groove. The negative pressure mechanism is started by utilizing an alternating magnetic field generated by each traction coil on the magnetic suspension conveying line during working, so that negative pressure can be generated at the adsorption holes to firmly adsorb the workpiece on the workpiece seat, the workpiece is effectively prevented from deviating due to an inertia effect during conveying, and the precision of an assembly position is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic suspension conveyor lines, and in particular to an intelligent annular conveyor line based on magnetic suspension technology. Background Art

[0002] In modern times with high requirements for industrial automation and flexibility, in order to improve the moving speed, response speed, synchronization and hygiene of the conveyor line, a magnetic levitation conveyor line has emerged. It is mainly driven by a linear motor. The principle is to lay a linear coil on the conveyor table and set a permanent magnet on the mover. The mover is attracted to move forward by controlling the power supply of the coil.

[0003] For the circular conveyor line, for example, the intelligent multi-motor magnetic levitation circular transmission line disclosed in the Chinese patent publication number "CN219098092U" directly places the workpiece on a single magnet slide or a double magnet slide when conveying the workpiece. The magnetic levitation conveyor line is generally fast during conveying, and the speed can reach 2-4m / s. Especially at the start and stop moment or when encountering a bend in the circular conveyor line, the workpiece on the slide will be offset by a short distance due to inertia or centrifugal force. This causes some assembly robot arms to pick up and place workpieces for assembly during automated assembly line operations. Due to the offset of the workpiece position, it is difficult to pick up and place and assemble. If a clamp is installed on the slide for fixing, frequent loading and unloading is required during assembly line operations, which greatly reduces the processing efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that some assembly robot arms are difficult to pick up and place and assemble due to the displacement of the workpiece position when picking up and placing the workpiece for assembly, and to propose an intelligent circular conveyor line based on magnetic levitation technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An intelligent circular conveyor line based on magnetic suspension technology comprises a conveyor platform, a circular guide rail is installed on the conveyor platform, a mover is slidably arranged on the circular guide rail, the mover is pulled and moved by a magnetic suspension traction mechanism, a workpiece seat is fixedly installed on the upper end of the mover, a plurality of adsorption holes are opened on the upper end of the workpiece seat, a driving groove is opened on the side wall of the workpiece seat, and a negative pressure mechanism for generating negative pressure in the adsorption hole is installed in the driving groove;

[0007] The negative pressure mechanism includes a limit plate, a movable plate, a first self-inductance coil, a second self-inductance coil, an intake pipe, an exhaust pipe and a telescopic bag, wherein the limit plate is fixedly connected to the inner wall of the driving groove, the movable plate is slidably arranged in the driving groove, one end of the telescopic bag is fixedly connected to the side wall of the movable plate, and the other end of the telescopic bag is fixedly connected to the side wall of the limit plate, the first self-inductance coil and the second self-inductance coil are both fixedly installed in the driving groove, and the first self-inductance coil and the second self-inductance coil are respectively arranged on both sides of the movable plate, one end of the intake pipe is communicated with the adsorption hole, the other end of the intake pipe is communicated with the telescopic bag, the exhaust pipe is communicated with the inside of the telescopic bag, and both the intake pipe and the exhaust pipe are equipped with a one-way valve.

[0008] Preferably, the number of turns of the first self-inductance coil is greater than the number of turns of the second self-inductance coil, and the side wall of the workpiece seat is further provided with an iron core groove, in which an iron core is slidably provided, and the iron core is pushed to move by a pushing mechanism.

[0009] Preferably, the pushing mechanism comprises a first electromagnetic spring, one end of the first electromagnetic spring is fixedly connected to the iron core, and the other end of the first electromagnetic spring is fixedly connected to the inner wall of the iron core slot.

[0010] Preferably, the first self-inductance coil and the second self-inductance coil are connected in series, fixed touch plates are fixedly connected to the upper and lower inner walls of the driving groove, two conductive rods are fixedly connected to the side walls of the movable plate, and a moving touch plate is fixedly connected to one end of the conductive rod away from the movable plate, wherein the conductive rod is electrically connected to the series circuit composed of the first self-inductance coil and the second self-inductance coil, and the fixed touch plate is electrically connected to the first electromagnetic spring.

[0011] Preferably, the side wall of the conveying platform is provided with a plurality of coil grooves, the magnetic levitation traction mechanism includes traction coils installed in each coil groove, a permanent magnet is fixedly connected to the side wall of the mover, and each of the traction coils can be energized in turn to attract the permanent magnet to pull the mover to move along the circular guide rail.

[0012] Preferably, a plurality of venting holes are provided on the side wall of the workpiece seat, each of the venting holes is communicated with an adjacent adsorption hole, a gate groove is provided on the side wall of the workpiece seat, and an opening and closing mechanism for opening and closing the venting holes is installed in the gate groove.

[0013] Preferably, the opening and closing mechanism includes a sealing plate and a second electromagnetic spring, wherein the sealing plate is sealingly slidably arranged in the gate groove, one end of the second electromagnetic spring is fixedly connected to the sealing plate, the other end of the second electromagnetic spring is fixedly connected to the top of the gate groove, and the second electromagnetic spring is directly electrically connected to the series circuit composed of the first self-inductance coil and the second self-inductance coil.

[0014] Preferably, the lower end of the mover is rotatably connected to a plurality of rotating shafts, and the lower end of each rotating shaft is fixedly connected to a guide wheel, and the guide wheel rolls along the side wall of the annular guide rail.

[0015] The present invention has the following beneficial effects:

[0016] 1. By setting the adsorption holes and negative pressure mechanism, the alternating magnetic field generated by the traction coils on the magnetic suspension conveyor line during operation can be used to start the negative pressure mechanism, so that negative pressure can be generated at the adsorption holes to firmly adsorb the workpiece on the workpiece seat, effectively avoiding the deviation of the workpiece due to inertia during the transportation of the workpiece, and ensuring the assembly position accuracy;

[0017] 2. By setting a negative pressure mechanism composed of a limit plate, a movable plate, a first self-inductance coil, a second self-inductance coil, an air intake pipe, an exhaust pipe and a telescopic bag, and using the alternating magnetic field generated when the traction coil is working to start the negative pressure mechanism, it is possible to automatically and synchronously start the negative pressure mechanism when the workpiece moves to adsorb and fix the workpiece. When the workpiece stops moving, the traction coil stops being energized and the magnetic field disappears, and the negative pressure mechanism also stops running, which can release the adsorption of the workpiece. This makes it convenient for each assembly equipment to pick up and place the workpiece for assembly, which is very smart and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall external structure of an intelligent ring conveyor line based on magnetic levitation technology proposed by the present invention;

[0019] Figure 2 It is a structural schematic diagram of the conveying platform and its internal magnetic suspension traction mechanism in the present invention;

[0020] Figure 3 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0021] Figure 4 It is a schematic diagram of the internal cross-section structure of the workpiece seat in the present invention;

[0022] Figure 5 for Figure 4 A schematic diagram of the structure at B in FIG.

[0023] Figure 6 It is a schematic diagram of the connection structure of the mover, permanent magnet, rotating shaft and guide wheel in the present invention;

[0024] Figure 7 for Figure 4 A magnified schematic diagram of the structure at C in

[0025] In the figure: 1 conveying platform, 2 annular guide rail, 3 mover, 4 permanent magnet, 5 workpiece seat, 6 adsorption hole, 7 venting hole, 8 driving slot, 9 first self-inductance coil, 10 second self-inductance coil, 11 iron core slot, 12 first electromagnetic spring, 13 iron core, 14 limit plate, 15 gate slot, 16 second electromagnetic spring, 17 sealing plate, 18 moving plate, 19 telescopic bag, 20 conductive rod, 21 moving touch plate, 22 fixed touch plate, 23 exhaust pipe, 24 coil slot, 25 traction coil, 26 guide wheel, 27 rotating shaft, 28 suction pipe. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figure 1-Figure 7 , an intelligent circular conveyor line based on magnetic levitation technology, including a conveyor platform 1, a circular guide rail 2 is installed on the conveyor platform 1, a mover 3 is slidably provided on the circular guide rail 2, and the mover 3 is moved by a magnetic levitation traction mechanism. A plurality of coil slots 24 are opened on the side wall of the conveyor platform 1, and the magnetic levitation traction mechanism includes a traction coil 25 installed in each coil slot 24. It should be noted that the installation, arrangement and power control method of the traction coil 25 are the same as those of the existing magnetic levitation conveyor line. Since it is irrelevant to the design purpose of this scheme, it will not be described here.

[0028] The side wall of the mover 3 is fixedly connected with a permanent magnet 4 , and each traction coil 25 can be energized in turn to attract the permanent magnet 4 to pull the mover 3 to move along the annular guide rail 2 .

[0029] Reference Figure 6 The upper end of the mover 3 is fixedly mounted with a workpiece seat 5, and the lower end of the mover 3 is rotatably connected to a plurality of rotating shafts 27, and the lower end of each rotating shaft 27 is fixedly connected to a guide wheel 26, and the guide wheel 26 rolls along the side wall of the annular guide rail 2. It should be noted that by providing the guide wheel 26, the mover 3 can be easily moved along the annular guide rail 2, reducing the forward resistance and noise.

[0030] A plurality of adsorption holes 6 are formed at the upper end of the workpiece seat 5, a driving groove 8 is formed at the side wall of the workpiece seat 5, and a negative pressure mechanism for generating negative pressure in the adsorption holes 6 is installed in the driving groove 8;

[0031] Reference Figure 4 and Figure 5The negative pressure mechanism includes a limit plate 14, a movable plate 18, a first self-inductance coil 9, a second self-inductance coil 10, an air intake pipe 28, an exhaust pipe 23 and a telescopic bag 19, wherein the limit plate 14 is fixedly connected to the inner wall of the driving groove 8, the movable plate 18 is slidably arranged in the driving groove 8, one end of the telescopic bag 19 is fixedly connected to the side wall of the movable plate 18, and the other end of the telescopic bag 19 is fixedly connected to the side wall of the limit plate 14, the first self-inductance coil 9 and the second self-inductance coil 10 are both fixedly installed in the driving groove 8, and the first self-inductance coil 9 and the second self-inductance coil 10 are respectively arranged on both sides of the movable plate 18. It should be noted that the movable plate 18 can be made of iron material, and can be attracted by the first self-inductance coil 9 and the second self-inductance coil 10 after power is supplied, and at the same time, the upper and lower ends of the movable plate 18 are both provided with rolling balls, which can reduce the travel resistance of its left and right movement.

[0032] One end of the air intake pipe 28 is in communication with the adsorption hole 6, the other end of the air intake pipe 28 is in communication with the bellows 19, the exhaust pipe 23 is in communication with the inside of the bellows 19, and one-way valves are installed in both the air intake pipe 28 and the exhaust pipe 23. It should be noted that the one-way valve in the air intake pipe 28 restricts air from flowing from the adsorption hole 6 to the bellows 19 in one direction, and the one-way valve in the exhaust pipe 23 restricts air from flowing from the inside of the bellows 19 to the outside of the exhaust pipe 23 in one direction, so when the bellows 19 is pulled and stretched by the moving plate 18, air can only be inhaled from the air intake pipe 28, and when the bellows 19 is squeezed and contracted by the moving plate 18, air can only be discharged from the exhaust pipe 23, so that the technical effect of continuously generating negative pressure in the adsorption hole 6 can be achieved.

[0033] The number of turns of the first self-inductance coil 9 is greater than the number of turns of the second self-inductance coil 10, and the side wall of the workpiece seat 5 is also provided with an iron core slot 11, in which an iron core 13 is slidably provided, and the iron core 13 is pushed to move by a pushing mechanism. The pushing mechanism includes a first electromagnetic spring 12, one end of the first electromagnetic spring 12 is fixedly connected to the iron core 13, and the other end of the first electromagnetic spring 12 is fixedly connected to the inner wall of the iron core slot 11. It should be noted that the iron core 13 slides through the left inner wall of the iron core slot 11 and can extend into the driving slot 8, and the iron core 13 can enter and exit the inside and outside of the second self-inductance coil 10 when moving left and right.

[0034] The first self-inductance coil 9 and the second self-inductance coil 10 are connected in series, the upper and lower inner walls of the driving slot 8 are fixedly connected with fixed touch plates 22, the side walls of the moving plate 18 are fixedly connected with two conductive rods 20, and the end of the conductive rod 20 away from the moving plate 18 is fixedly connected with a moving touch plate 21, wherein the conductive rod 20 is electrically connected to the series circuit composed of the first self-inductance coil 9 and the second self-inductance coil 10, and the fixed touch plate 22 is electrically connected to the first electromagnetic spring 12. It should be noted that, as Figure 5As shown, initially, the moving touch plate 21 and the fixed touch plate 22 are in sliding contact, and when an induced current is generated inside the first self-inductance coil 9 and the second self-inductance coil 10, the induced current can be transmitted to the first electromagnetic spring 12 through the conductive rod 20, the moving touch plate 21 and the fixed touch plate 22, and the first electromagnetic spring 12 is energized and contracted.

[0035] The side wall of the workpiece seat 5 is provided with a plurality of venting holes 7, each of which is communicated with the adjacent adsorption hole 6. The side wall of the workpiece seat 5 is provided with a gate groove 15, and an opening and closing mechanism for opening and closing the venting hole 7 is installed in the gate groove 15. The opening and closing mechanism includes a sealing plate 17 and a second electromagnetic spring 16, wherein the sealing plate 17 is sealingly and slidably arranged in the gate groove 15, one end of the second electromagnetic spring 16 is fixedly connected to the sealing plate 17, and the other end of the second electromagnetic spring 16 is fixedly connected to the top of the gate groove 15, and the second electromagnetic spring 16 is directly electrically connected to the series circuit composed of the first self-inductance coil 9 and the second self-inductance coil 10. It should be noted that the second electromagnetic spring 16 can be controlled to expand and contract by turning on and off the power of the second electromagnetic spring 16. Since the upper end of the second electromagnetic spring 16 is fixed, the sealing plate 17 can be driven to move up and down, so that the moving position of the sealing plate 17 can be controlled to realize the opening and closing of the venting hole 7.

[0036] In the present invention, similar to the existing magnetic levitation conveyor line, the traction coils 25 in each coil slot 24 are energized by controlling the circuit, so that the corresponding traction coils 25 can generate magnetic force and attract the permanent magnets 4 on the mover 3, thereby attracting the mover 3 to move along the annular guide rail 2.

[0037] As the mover 3 continuously moves along the annular guide rail 2, the traction coils 25 at different positions need to be powered on and off in sequence, and a constantly changing magnetic field will be continuously generated near the mover 3. Affected by the alternating magnetic field, an induced magnetic field will be excited in the first self-inductance coil 9 and the second self-inductance coil 10 in the driving slot 8, and an induced current will also be generated. The circuit in which the first self-inductance coil 9 and the second self-inductance coil 10 are connected in series can transmit current to the second electromagnetic spring 16, and the second electromagnetic spring 16 will shrink after being energized, so that the sealing plate 17 can be pulled up, thereby blocking the vent hole 7, so that air cannot enter or exit the vent hole 7. Figure 7 shown.

[0038] In addition, the circuit of the first self-inductance coil 9 and the second self-inductance coil 10 connected in series also transmits the circuit to the conductive rod 20 and the moving touch plate 21. Figure 5 At this time, the movable touch plate 21 and the fixed touch plate 22 are attached together, so the energy will be transmitted to the fixed touch plate 22 through the movable touch plate 21, and finally to the first electromagnetic spring 12. Then, the first electromagnetic spring 12 will also contract after being energized. Since the right end of the first electromagnetic spring 12 is fixed, the first electromagnetic spring 12 will pull the iron core to the right into the iron core slot 11 after contraction, so that the iron core will be separated from the second self-inductance coil 10.

[0039] Since the number of turns of the first self-inductance coil 9 is greater than that of the second self-inductance coil 10, the magnetic field strength generated by the first self-inductance coil 9 will be greater than the magnetic field strength of the second self-inductance coil 10, so that the magnetic attraction of the first self-inductance coil 9 on the moving plate 18 will be greater than the magnetic attraction of the second self-inductance coil 10. Figure 5 As shown, the movable plate 18 can be attracted to move leftward, and the conductive rod 20 and the movable touch plate 21 on the left side of the movable plate 18 also move leftward. When the movable touch plate 21 gradually moves leftward and separates from the fixed touch plate 22, the circuit input to the first electromagnetic spring 12 is disconnected, and the first electromagnetic spring 12 will automatically extend and recover after power failure, so that the iron core 13 can be pushed to move leftward, and the iron core 13 can be pushed into the driving slot 8 and between the second self-inductance coils 10, so that the magnetic field strength of the second self-inductance coil 10 can be greatly enhanced. At this time, the magnetic field strength of the second self-inductance coil 10 is greater than the magnetic field strength of the first self-inductance coil 9, so that the second self-inductance coil 10 The magnetic attraction force on the movable plate 18 is also greater than the magnetic attraction force of the first self-inductance coil 9 on the movable plate 18, so that the movable plate 18 can move to the right. After the movable plate 18 moves to the right, the movable contact plate 21 is released from the fixed contact plate 22 again, so that the first electromagnetic spring 12 can be energized again, and it will shrink again and pull the iron core 13 back to the iron core slot 11. At this time, the magnetic field strength of the first self-inductance coil 9 is greater than the magnetic field strength of the second self-inductance coil 10, and the movable plate 18 is forced to move to the left again. This cycle is repeated. When the mover 3 drives the workpiece seat 5 and the workpiece above to move, the movable plate 18 in the driving slot 8 will move back and forth left and right.

[0040] When the movable plate 18 moves to the left, the telescopic bag 19 will be pulled to stretch, and the internal space of the telescopic bag 19 will be enlarged, so that negative pressure can be generated and air can be sucked from the suction pipe 28. The suction pipe 28 is connected to the bottom of the adsorption hole 6, so air can be sucked through the adsorption hole 6. When the movable plate 18 moves to the right, the telescopic bag 19 is squeezed to discharge the air from the exhaust pipe 23. As the movable plate 18 continues to move left and right, air can be continuously sucked through the adsorption hole 6. In this way, when the workpiece is placed on the workpiece seat 5, negative pressure can be continuously generated at the adsorption hole 6 to firmly adsorb the workpiece on the workpiece seat 5, thereby avoiding position displacement due to inertia during the transportation of the workpiece.

[0041] It is also worth mentioning that after the mover 3 drives the workpiece seat 5 and the workpiece thereon to be transported to the specified position, it will stop moving. At this time, the traction coils 25 in the magnetic suspension traction mechanism must be in a power-off state. Therefore, the alternating magnetic field generated by the traction coil 25 also disappears, and the induced current and induced magnetic field excited by the first self-inductance coil 9 and the second self-inductance coil 10 also disappear. The movable plate 18 also stops moving immediately, so it no longer sucks air from the adsorption hole 6 to generate negative pressure, and the second electromagnetic spring 16 is also powered off. The second electromagnetic spring 16 stretches and recovers and pushes the sealing plate 17 down to the bottom of the gate groove 15. At this time, the sealing plate 17 no longer cuts off the vent hole 7, and the external air can enter the adsorption hole 6 through the vent hole 7. The negative pressure in the adsorption hole 6 disappears immediately, and the adsorption of the workpiece can be released. This makes it convenient for each assembly equipment to take and place the workpiece for assembly, which is very smart and convenient.

[0042] To sum up, the magnetic levitation ring conveyor line proposed in the present invention can automatically start the negative pressure mechanism during the workpiece conveying process by utilizing the alternating magnetic field generated by the traction coil 25 in the magnetic levitation traction mechanism during operation, so that negative pressure can be generated at the adsorption hole 6 to firmly adsorb the workpiece on the workpiece seat 5, effectively avoiding the deviation due to inertia when conveying the workpiece, and ensuring the assembly position accuracy; and when it stops moving at the designated transportation position, it immediately contacts the adsorption of the workpiece, which can facilitate the assembly equipment to pick up and place the workpiece for assembly, without the need to install a clamp, thereby greatly improving the processing and assembly efficiency.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent circular conveyor line based on magnetic levitation technology, comprising a conveyor platform (1), on which a circular guide rail (2) is installed, characterized in that: A mover (3) is slidably provided on the annular guide rail (2), the mover (3) is pulled and moved by a magnetic suspension traction mechanism, a workpiece seat (5) is fixedly installed on the upper end of the mover (3), a plurality of adsorption holes (6) are provided on the upper end of the workpiece seat (5), a driving groove (8) is provided on the side wall of the workpiece seat (5), and a negative pressure mechanism for generating negative pressure in the adsorption holes (6) is installed in the driving groove (8); The negative pressure mechanism comprises a limit plate (14), a movable plate (18), a first self-inductance coil (9), a second self-inductance coil (10), an air intake pipe (28), an air exhaust pipe (23) and a telescopic bag (19), wherein the limit plate (14) is fixedly connected to the inner wall of the driving groove (8), the movable plate (18) is slidably arranged in the driving groove (8), one end of the telescopic bag (19) is fixedly connected to the side wall of the movable plate (18), and the other end of the telescopic bag (19) is fixedly connected to the inner wall of the limit plate (14). On the side wall, the first self-inductance coil (9) and the second self-inductance coil (10) are both fixedly installed in the driving groove (8), and the first self-inductance coil (9) and the second self-inductance coil (10) are respectively arranged on both sides of the movable plate (18), one end of the suction pipe (28) is communicated with the adsorption hole (6), the other end of the suction pipe (28) is communicated with the telescopic bag (19), the exhaust pipe (23) is communicated with the inside of the telescopic bag (19), and one-way valves are installed in the suction pipe (28) and the exhaust pipe (23).

2. According to claim 1, the intelligent circular conveyor line based on magnetic levitation technology is characterized in that: The number of turns of the first self-inductance coil (9) is greater than the number of turns of the second self-inductance coil (10), and the side wall of the workpiece seat (5) is also provided with an iron core groove (11), an iron core (13) is slidably arranged in the iron core groove (11), and the iron core (13) is pushed to move by a pushing mechanism.

3. The intelligent circular conveyor line based on magnetic levitation technology according to claim 2 is characterized in that: The pushing mechanism comprises a first electromagnetic spring (12), one end of the first electromagnetic spring (12) is fixedly connected to the iron core (13), and the other end of the first electromagnetic spring (12) is fixedly connected to the inner wall of the iron core slot (11).

4. The intelligent circular conveyor line based on magnetic levitation technology according to claim 3 is characterized in that: The first self-inductance coil (9) and the second self-inductance coil (10) are connected in series, the upper and lower inner walls of the driving slot (8) are fixedly connected with fixed touch plates (22), the side walls of the moving plate (18) are fixedly connected with two conductive rods (20), one end of the conductive rod (20) away from the moving plate (18) is fixedly connected with a moving touch plate (21), wherein the conductive rod (20) is electrically connected to a series circuit formed by the first self-inductance coil (9) and the second self-inductance coil (10), and the fixed touch plate (22) is electrically connected to the first electromagnetic spring (12).

5. The intelligent circular conveyor line based on magnetic levitation technology according to claim 1 is characterized in that: The side wall of the conveyor platform (1) is provided with a plurality of coil slots (24); the magnetic suspension traction mechanism comprises a traction coil (25) installed in each coil slot (24); a permanent magnet (4) is fixedly connected to the side wall of the mover (3); each traction coil (25) can be energized in turn to attract the permanent magnet (4) to pull the mover (3) to move along the annular guide rail (2).

6. The intelligent circular conveyor line based on magnetic levitation technology according to claim 4 is characterized in that: The side wall of the workpiece seat (5) is provided with a plurality of air release holes (7), each of the air release holes (7) is communicated with an adjacent adsorption hole (6), the side wall of the workpiece seat (5) is provided with a gate groove (15), and an opening and closing mechanism for opening and closing the air release holes (7) is installed in the gate groove (15).

7. The intelligent circular conveyor line based on magnetic levitation technology according to claim 6 is characterized in that: The opening and closing mechanism comprises a sealing plate (17) and a second electromagnetic spring (16), wherein the sealing plate (17) is sealingly slidably arranged in the gate groove (15), one end of the second electromagnetic spring (16) is fixedly connected to the sealing plate (17), the other end of the second electromagnetic spring (16) is fixedly connected to the top of the gate groove (15), and the second electromagnetic spring (16) is directly electrically connected to a series circuit composed of a first self-inductance coil (9) and a second self-inductance coil (10).

8. The intelligent circular conveyor line based on magnetic levitation technology according to claim 1 is characterized in that: The lower end of the mover (3) is rotatably connected to a plurality of rotating shafts (27), and the lower end of each rotating shaft (27) is fixedly connected to a guide wheel (26), and the guide wheel (26) rolls along the side wall of the annular guide rail (2).

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