Controllable permanent magnetic suspension impact idler

Abstract

The invention relates to the technical field of magnetic suspension carrier rollers, in particular to a controllable permanent magnet magnetic suspension buffer carrier roller which comprises a carrier roller body, a permanent magnet cylinder, a magnetic base, a position correcting device, a release ring and a light sensor, and as a material conveying form, the buffer carrier roller operated through the magnetic suspension effect has the advantages of being light in weight, small in rotation inertia and the like. In the material transportation process through the magnetic suspension impact idler, how to axially or radially limit the impact idler in a suspension state in time and reduce displacement in the case of voltage unbalance or power-off state caused by an emergency situation needs to be considered, and along with the change of a material accumulation mode, the rotation state of the idler needs to be regulated and controlled in real time, so that the material transportation efficiency is greatly improved. In addition, negative interference caused by dust in an external environment such as a material falling point position is also a main cause of jamming of operation in a magnetic suspension area of the impact idler, and protection needs to be carried out to improve the anti-jamming capability of the impact idler.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic suspension rollers, in particular to a controllable permanent magnetic suspension buffer roller. Background Art

[0002] As a form of material transportation, the buffer rollers that use the magnetic suspension effect have the characteristics of light weight and small rotational inertia. Among them, the magnetic suspension buffer rollers are often installed below the receiving section of the conveyor to reduce the impact of materials on the conveyor belt during material dropping and extend the service life of the conveyor belt. At the same time, it also has the characteristics of reducing mechanical friction during material transportation, reducing kinetic energy loss, and improving the conveying capacity of the conveyor. In addition, the roller body and seals are made of polymer materials with strong corrosion resistance. When used in corrosive occasions, the service life can far exceed that of ordinary rollers.

[0003] When using magnetic suspension buffer rollers for material transportation, it is necessary to consider how to timely limit the axial or radial position of the buffer rollers in the suspended state in the event of voltage imbalance or power outage caused by unexpected situations, so as to avoid overturning or spilling of materials during transportation. In addition, as the material stacking method changes, the rotation state of the rollers needs to be regulated in real time to reduce the edge magnetic attraction effect and improve the suspension stability. In addition, the negative interference caused by the external environment, such as dust at the material drop point, is also the main cause of the buffer roller's magnetic suspension area jamming, and needs to be protected to improve the buffer roller's anti-interference ability.

[0004] In view of this, the present invention proposes a controllable permanent magnetic suspension buffer roller to solve the above technical problems. Summary of the invention

[0005] In order to address the deficiencies of the prior art, the present invention provides a controllable permanent magnetic levitation buffer roller; thereby solving the problem that traditional buffer rollers are difficult to cope with changes in the external environment or sudden conditions, have poor adaptive control capabilities, and increase the probability of transported materials overturning and spilling or running jams.

[0006] The technical solution adopted by the present invention to solve its technical problems is a controllable permanent magnetic levitation buffer roller, including a roller, a permanent magnetic cylinder, a magnetic seat, a positioner, a release ring and a light sensor. Permanent magnetic cylinders are fixedly installed at both ends of the roller, a conveyor belt is sleeved on the middle part of the roller, the roller is located above the magnetic seat, and the magnetic seat cooperates with the permanent magnetic cylinder magnetically.

[0007] An axial rod is fixedly installed on the side of the magnetic seat away from the roller, and a positioner is slidably installed on the axial rod. The positioner is a silo structure coaxial with the permanent magnetic cylinder, and air nozzles are evenly installed on the side of the positioner facing the permanent magnetic cylinder;

[0008] The release ring is fixedly installed at the end of the permanent magnet cylinder, and a plurality of release grooves corresponding to the air nozzles are circumferentially opened at the edge of the release ring, and the release grooves are trumpet-shaped and gradually shrink toward the outside of the release ring;

[0009] The optical sensor is fixedly installed at the center position of the end of the permanent magnetic cylinder, and a light source emitter matching with the optical sensor is fixedly installed on the side of the positioner facing the permanent magnetic cylinder;

[0010] Preferably, magnetic tiles and permanent magnets are staggered and cross-arranged inside the permanent magnetic cylinder to reduce the edge magnetic attraction effect;

[0011] Preferably, the axial rod is evenly provided with pin holes along its axial direction, a pin engaged with the pin hole is movably installed at the bottom of the positioner, a positioner groove is axially provided at one end of the positioner facing the permanent magnetic cylinder, the air nozzles are slidably installed in the positioner groove, a positioner disk is slidably installed in the positioner, a connecting rod is hingedly installed between the edge of the positioner disk and the air nozzle, an electric push rod is fixedly installed in the positioner, and the end of the electric push rod is fixedly connected to the positioner disk;

[0012] Preferably, the end of the positioner away from the permanent magnetic cylinder is a closed structure, an end cap is fixedly installed at the end of the positioner, a plurality of filter cartridges surrounding the end cap are fixedly installed on the inner side of the end cap, the air nozzle is connected to the closed inner cavity of the positioner through a hose, an air inlet pipe is fixedly installed on the end cap, and the inlet end of the air inlet pipe is connected to the central area of ​​the filter cartridge;

[0013] Preferably, a circumferential separation ring is provided on one side of the permanent magnetic cylinder facing the positioner, the separation ring has a conical cross section, and the separation ring is located at the periphery of the optical sensor;

[0014] Preferably, a sinking groove that penetrates up and down is provided in the middle of the magnetic seat, the permanent magnet cylinder is located directly above the sinking groove, and a slope structure is symmetrically provided on the upper part of the notch of the sinking groove, and the slope surface is parallel to the axis of the permanent magnet cylinder, and permanent magnet shafts are rotatably installed on both sides of the left and right sides of the magnetic seat, the permanent magnet shaft is located below the slope structure, and the permanent magnet shaft, the magnetic tile and the permanent magnet cooperate with each other magnetically, and a motor is fixedly installed on one side of the magnetic seat, and the motor output shaft is fixedly connected to the permanent magnet shaft;

[0015] Preferably, the slope surface of the magnetic seat is rotatably mounted with a plurality of receiving shafts, the receiving shafts are rotatably fitted with the outer wall of the permanent magnetic cylinder, the ends of the receiving shafts are rotatably mounted with ball plungers, and the spherical ends of the ball plungers are rollingly fitted with the outer wall of the release ring;

[0016] Preferably, a shielding ring is fixedly installed on the upper part of the magnetic base, the shielding ring surrounds the periphery of the permanent magnetic cylinder, and a breathable cotton plate is movably installed below the slope structure of the magnetic base, and the cotton plate is located below the shielding ring;

[0017] Preferably, the magnetic base is evenly provided with evacuation holes on one side facing the aligner, a wiping cavity is provided on the inner side of the magnetic base, a plurality of wiping rods are fixedly installed in the wiping cavity, the wiping rods are arranged around the permanent magnetic axis, the ends of the evacuation holes are connected with the wiping cavity, the bottom of the magnetic base is evenly provided with waste chip grooves connected with the wiping cavity, and a waste chip box is movably installed on the magnetic base below the waste chip groove;

[0018] Preferably, the release groove is located outside the evacuation hole, a through hole pointing to the evacuation hole is provided at the bottom of the release groove, and the cotton plate is located between the evacuation hole and the waste chip groove.

[0019] Beneficial effects of the present invention:

[0020] (1) In the present invention, when encountering a voltage imbalance or power failure caused by an unexpected situation, the symmetrically arranged slope structure can provide additional auxiliary limit for the permanent magnetic cylinder, and reduce the contact friction between the two by using the permanent magnetic shaft, thereby improving the operation stability and service life of the permanent magnetic cylinder. The magnetic tiles and permanent magnets staggered and cross-arranged on the inner side of the permanent magnetic cylinder can further reduce the edge magnetic attraction effect and improve its suspension stability. When the roller appears in a special unstable operation state such as yaw or imbalance, the inner side limit abutment of the ball head plunger can reduce the movement amplitude of the roller to both ends, thereby improving the rotation stability of the roller and reducing the probability of the conveyed material overturning or spilling.

[0021] (2) In the present invention, in order to achieve the controllability of the rotation state of the roller, improve its axial limit and suspension stability, and at the same time improve the error correction and restoration ability of the roller after entering an unstable operating state, a uniform airflow blowing effect is applied to both ends of the roller at the same time, which not only improves the suspension ability of the roller, but also provides a limit effect in the axial direction, improves the return efficiency and accuracy of the roller, thereby reducing the possibility of its deflection or movement and reducing the radial runout of the roller.

[0022] (3) In the present invention, during the operation of the roller or the permanent magnet shaft, it is necessary to prevent the two from being negatively affected by the external environment, such as reducing the pollution and operation jamming caused by dust at the material drop point. During daily operation, the shielding ring can block the dust falling from above, thereby improving the cleanliness of the outer wall of the permanent magnet cylinder. The breathable cotton plate arranged under the slope structure of the magnetic seat can intercept and collect the dust mixed in the airflow while the airflow passes through, thereby reducing the dust dispersion area. While utilizing the airflow to improve the suspension stability of the roller, the discharge process of the airflow can also be utilized to guide the cleaning and collection of dust in the magnetic action area, thereby improving the cleanliness of the magnetic suspension area and improving the anti-interference factor ability of the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a schematic diagram of the first overall connection structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the positional relationship between the aligner and the permanent magnetic cylinder of the present invention;

[0026] Figure 3 It is a schematic diagram of the first position relationship between the permanent magnetic shaft and the permanent magnetic cylinder of the present invention;

[0027] Figure 4 for Figure 3 A is an enlarged schematic diagram;

[0028] Figure 5 It is a partial cross-sectional schematic diagram of the positioner of the present invention;

[0029] Figure 6 for Figure 5 The enlarged schematic diagram of point B in FIG.

[0030] Figure 7 It is a schematic diagram of the second position relationship between the permanent magnetic shaft and the permanent magnetic cylinder of the present invention;

[0031] Figure 8 for Figure 7 The enlarged schematic diagram of point C in FIG.

[0032] Fig. 9 It is a partial cross-sectional schematic diagram of the magnetic base of the present invention;

[0033] Fig.10 for Fig. 9 The enlarged schematic diagram of D in FIG.

[0034] Fig.11 for Fig. 9 The enlarged schematic diagram of point E in FIG.

[0035] Fig.12 for Fig. 9 The enlarged schematic diagram of F in FIG.

[0036] In the figure:

[0037] 1. Roller; 2. Permanent magnet cylinder; 3. Magnetic seat; 4. Conveyor belt; 5. Positioner; 31. Axial rod; 6. Air nozzle; 7. Release ring; 71. Release groove; 8. Optical sensor; 21. Magnetic tile; 22. Permanent magnet; 311. Pin hole; 51. Positioning groove; 52. Positioning disk; 521. Connecting rod; 53. Electric push rod; 54. End cover; 541. Filter cartridge; 61. Inlet pipe; 23. Separation ring; 32. Sinking groove; 33. Permanent magnet shaft; 34. Motor; 35. Attachment shaft; 351. Ball plunger; 36. Shielding ring; 37. Cotton board; 38. Evacuation hole; 30. Wiping chamber; 39. Wiping rod; 301. Waste chip groove; 302. Waste chip box; 60. Hose. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] The embodiment of the present invention provides a controllable permanent magnetic suspension buffer roller, which solves the problem that traditional buffer rollers are difficult to cope with changes in the external environment or sudden conditions, have poor adaptive control capabilities, and increase the probability of transported materials overturning and spilling or running jams.

[0040] The buffer roller 1 is light in weight and has a small rotational inertia. The buffer roller 1 is installed below the receiving section of the conveyor to reduce the impact of the material on the conveyor belt 4 when the material is dropped, thereby extending the service life of the conveyor belt 4. By applying magnetic force to the buffer roller 1 to make it enter a suspended state, the mechanical friction during material transportation can be further reduced, the kinetic energy loss can be reduced, and the conveying capacity of the conveyor can be improved. Figures 1 to 3 ,as well as Figure 7 As shown, the preferred embodiment of the present invention proposes a controllable permanent magnetic suspension buffer roller, including a roller 1, a permanent magnetic cylinder 2, a magnetic seat 3, a positioner 5, a release ring 7 and a light sensor 8. The two ends of the roller 1 are fixedly installed with a permanent magnetic cylinder 2, and the middle part of the roller 1 is sleeved with a conveyor belt 4. The roller 1 is located above the magnetic seat 3, and the magnetic seat 3 and the permanent magnetic cylinder 2 are magnetically matched. The polymer material dedicated to the roller body of the roller 1 has mechanical properties similar to bronze, light specific gravity, and good wear resistance and self-lubricating properties. The friction between the roller 1 and the belt is small, and the damage to the belt contact surface is low. In addition, the roller body and the seal are made of polymer materials with strong corrosion resistance. When used in corrosive occasions, the service life can far exceed that of ordinary rollers.

[0041] Furthermore, in order to improve the support stability of the roller 1, as Figures 7 to 11As shown, a rotating permanent magnet shaft 33 is used to change the magnetic circuit, and the upper slope structure of the magnetic base 3 is used as the bottom support. The inner side of the permanent magnet cylinder 2 is staggered and cross-arranged with magnetic tiles 21 and permanent magnets 22 for reducing the edge magnetic attraction effect, which can further improve its suspension stability. A vertical through-type sinking groove 32 is arranged in the middle of the magnetic base 3, and the permanent magnet cylinder 2 is located directly above the sinking groove 32. The upper part of the notch of the sinking groove 32 is symmetrically arranged with a slope structure, and the slope surface is parallel to the axis of the permanent magnet cylinder 2. The left and right sides of the magnetic base 3 are rotatably installed with permanent magnet shafts 33, and the permanent magnet shaft 33 is located below the slope structure and the permanent magnet shaft 33 The magnetic forces of the magnetic shoe 21 and the permanent magnet 22 cooperate with each other, a motor 34 is fixedly installed on one side of the magnetic seat 3, and the output shaft of the motor 34 is fixedly connected to the permanent magnet shaft 33. When encountering a voltage imbalance or power failure caused by an emergency, the symmetrically arranged slope structure can provide additional auxiliary limit for the permanent magnet cylinder 2, and reduce the contact friction between the two through the use of the permanent magnet shaft 33, thereby improving the operating stability and service life of the permanent magnet cylinder 2. The motor 34 is used to drive the permanent magnet shaft 33 to rotate, and the magnetic field changes among the permanent magnet shaft 33, the magnetic shoe 21 and the permanent magnet 22 make the roller 1 enter a stable suspended rotation state.

[0042] Furthermore, during the operation of the roller 1, in order to improve its axial limiting ability during rotation, as Figures 8 to 10 As shown, the slope surface of the magnetic seat 3 is rotatably mounted with a plurality of receiving shafts 35, which are rotatably fitted with the outer wall of the permanent magnetic cylinder 2, and the ends of the receiving shafts 35 are rotatably mounted with ball plungers 351, and the spherical end of the ball plunger 351 is rollingly fitted with the outer wall of the release ring 7. When the roller 1 enters a stable rotation state, it is suspended above the slope surface of the magnetic seat 3. At this time, the side wall of the release ring 7 rotates circumferentially at a position close to but not in contact with the ball plunger 351. When the roller 1 appears in a special unstable operating state such as yaw or imbalance, the inner side limit abutment of the ball plunger 351 can reduce the movement amplitude of the roller 1 to both ends, thereby improving the rotation stability of the roller 1 and reducing the probability of overturning or spilling of the conveyed material.

[0043] Furthermore, in order to realize the controllability of the rotation state of the roller 1, improve its axial limit and suspension stability, and at the same time improve the error correction and restoration capability of the roller 1 after it enters an unstable operating state, such as Figures 4 to 6As shown, the end of the aligner 5 away from the permanent magnet cylinder 2 is a closed structure, an end cover 54 is fixedly installed at the end of the aligner 5, and a plurality of filter cartridges 541 surrounding each other are fixedly installed on the inner side of the end cover 54, the air nozzle 6 is connected with the closed inner cavity of the aligner 5 through a hose 60, an air inlet pipe 61 is fixedly installed on the end cover 54, and the inlet end of the air inlet pipe 61 is connected with the central area of ​​the filter cartridge 541. During operation, air flow is introduced into the closed cavity at the end of the aligner 5 through an external air source and the air inlet pipe 61, and the air flow is dried and purified by the filter cartridge 541 and then flows into the circumferentially arranged air nozzles 6 respectively through a plurality of hoses 60, and the air flow is blown toward the end side wall of the permanent magnet cylinder 2 through the air nozzle 6. At this time, a uniform air flow blowing effect is applied to both ends of the roller 1 at the same time, which not only improves the suspension ability of the roller 1, but also provides a limiting effect in its axial direction, thereby reducing the possibility of its deflection or movement.

[0044] Furthermore, in order to make the axial airflow limiting effect stable and reliable, as Figures 4 to 6 As shown, an axial rod 31 is fixedly installed on the side of the magnetic seat 3 away from the roller 1, and the positioner 5 is slidably installed on the axial rod 31. The positioner 5 is a silo structure coaxial with the permanent magnetic cylinder 2. The air nozzle 6 is evenly installed on the side of the positioner 5 facing the permanent magnetic cylinder 2. The axial rod 31 is evenly provided with pin holes 311 along its axial direction. A pin engaged with the pin hole 311 is movably installed at the bottom of the positioner 5. An axial position groove 51 is axially provided at one end of the positioner 5 facing the permanent magnetic cylinder 2. The air nozzles 6 are all slidably installed in the aligning groove 51. A aligning disk 52 is slidably installed in the aligner 5, and the edge of the aligning disk 52 is aligned with the air nozzle 6. A connecting rod 521 is hingedly installed between them, an electric push rod 53 is fixedly installed in the positioner 5, and the end of the electric push rod 53 is fixedly connected to the positioning disk 52. When working, under the condition of a certain amount of external airflow, by adjusting the positioning position of the positioner 5 on the axial rod 31, the air nozzle 6 can be blown at a predetermined distance from the end of the permanent magnet cylinder 2. The multi-position air nozzle 6 hingedly installed by the connecting rod 521 can make each air nozzle 6 present a synchronous diffusion or contraction state when the electric push rod 53 pushes the positioning disk 52 to move a fixed distance, thereby adjusting the airflow blowing position and enhancing the operating stability of the roller 1.

[0045] Furthermore, in order to controllably adjust the operating state of the roller 1, Figures 7 to 11As shown, the release ring 7 is fixedly installed at the end of the permanent magnet cylinder 2, and a plurality of release grooves 71 corresponding to the air nozzle 6 are circumferentially provided at the edge of the release ring 7. The release groove 71 is in the shape of a trumpet that gradually shrinks toward the outside of the release ring 7. A circular separation ring 23 is provided on the side of the permanent magnet cylinder 2 facing the aligner 5. The cross section of the separation ring 23 is conical, and the separation ring 23 is located at the periphery of the optical sensor 8. When the roller 1 is in a stable operating state, the airflow blown by the air nozzle 6 at this time flows vertically to the outer area of ​​the separation ring 23, and flows to the outside of the release ring 7 along the release groove 71. When the permanent magnet cylinder 2 moves or deflects toward a certain end direction under the action of external impact, the electric push rod 53 in the offset direction of the roller 1 is started to work in the forward direction, through The electric push rod 53 pushes the positioning disk 52 to move. At this time, the circumferentially arranged air nozzle 6 gradually moves in a contracted state and gradually moves to the inner position of the separation ring 23. At this time, the air flow blown out from the air nozzle 6 mainly flows to the inner side of the separation ring 23 and tends to be concentrated. Under the blocking effect of the separation ring 23, the overflow of the air flow from the release groove 71 is reduced, and the impact force of the air flow to the end of the permanent magnet cylinder 2 is increased, so that the roller 1 moves in the opposite direction and enters the initial equilibrium state. In addition, the electric push rod 53 on the opposite side of the offset direction of the roller 1 works in the opposite direction, so that the air flow at both ends of the roller 1 enters a dynamic equilibrium state, which can improve the return efficiency and accuracy of the roller 1, thereby improving the operating stability and reducing the radial runout of the roller 1.

[0046] Further, such as Fig. 9 and Fig.11 As shown, the optical sensor 8 is fixedly installed at the center position of the end of the permanent magnetic cylinder 2, and a light source transmitter that matches the optical sensor 8 is fixedly installed on the side of the positioner 5 facing the permanent magnetic cylinder 2. The light sensor 8 receives the light emitted by the light source transmitter, and the operating position of the permanent magnetic cylinder 2 can be auxiliary judged according to the light signal intensity and position.

[0047] Furthermore, during the operation of the roller 1 or the permanent magnet shaft 33, it is necessary to prevent the two from being negatively affected by the external environment, such as reducing the pollution caused by dust at the material drop point and the operation jam, such as Fig. 9 , Fig.10 and Fig.12As shown, a shielding ring 36 is fixedly installed on the upper part of the magnetic base 3, and the shielding ring 36 surrounds the periphery of the permanent magnetic cylinder 2. A breathable cotton plate 37 is movably installed below the slope structure of the magnetic base 3, and the cotton plate 37 is located below the shielding ring 36. Evacuation holes 38 are evenly opened on the side of the magnetic base 3 facing the aligner 5, and a wiping cavity 30 is opened on the inner side of the magnetic base 3. A plurality of wiping rods 39 are fixedly installed in the wiping cavity 30, and the wiping rods 39 are arranged around the permanent magnetic axis 33. The end of the evacuation hole 38 is connected to the wiping cavity 30. The bottom of the magnetic base 3 is evenly provided with waste chip grooves 301 connected to the wiping chamber 30, and a waste chip box 302 is movably installed on the magnetic base 3 below the waste chip groove 301. The release groove 71 is located on the outside of the evacuation hole 38. The bottom of the release groove 71 is provided with a through hole pointing to the evacuation hole 38. The cotton plate 37 is located between the evacuation hole 38 and the waste chip groove 301. During daily operation, the shielding ring 36 can block the dust falling from above, improve the cleanliness of the outer wall of the permanent magnetic cylinder 2, and the airflow overflowing from the release groove 71 is partially along the The permanent magnetic cylinder 2 is blown toward the inner side of the shielding ring 36 in the axial direction. After passing through the annular area lowered by the shielding ring 36, its flow direction and flow velocity are concentrated for the second time, and the residual dust adhering to the permanent magnetic cylinder 2 is blown away in the direction that fits the outer contour of the permanent magnetic cylinder 2. The air-permeable cotton plate 37 arranged under the slope structure of the magnetic seat 3 can intercept and collect the dust mixed in the airflow while the airflow passes through, thereby reducing the dust dispersion area. In addition, part of the airflow flowing out of the release groove 71 enters the wiping chamber 30 through the evacuation hole 38, and is blown away by the waste chip groove. The dust on the outer wall of the permanent magnet shaft 33 is wiped and cleaned by the wiping rod 39, and the dust remaining on the outer wall of the permanent magnet shaft 33 is guided to the waste chip groove 301 and finally discharged into the waste chip box 302 for collection. In this process, while the airflow is used to improve the suspension stability of the roller 1, the discharge process of the airflow can also be used to guide the cleaning and collection of the dust in the magnetic action area, thereby improving the cleanliness of the magnetic suspension area and improving the anti-interference factor force of the roller 1.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A controllable permanent magnetic suspension buffer roller, comprising a roller (1), a permanent magnetic cylinder (2) and a magnetic seat (3), wherein both ends of the roller (1) are fixedly mounted with the permanent magnetic cylinder (2), a conveyor belt (4) is sleeved on the middle of the roller (1), the roller (1) is located above the magnetic seat (3), and the magnetic seat (3) and the permanent magnetic cylinder (2) are magnetically matched, characterized in that: Also includes A positioner (5), wherein an axial rod (31) is fixedly mounted on the side of the magnetic seat (3) away from the roller (1), the positioner (5) is slidably mounted on the axial rod (31), the positioner (5) is a silo structure coaxial with the permanent magnetic cylinder (2), and an air nozzle (6) is evenly mounted on the side of the positioner (5) facing the permanent magnetic cylinder (2); A release ring (7), the release ring (7) being fixedly mounted on the end of the permanent magnet cylinder (2), a plurality of release grooves (71) corresponding to the air nozzles (6) being circumferentially formed at the edge of the release ring (7), the release grooves (71) being in the shape of a trumpet that gradually contracts toward the outside of the release ring (7); The optical sensor (8) is fixedly mounted at the center position of the end of the permanent magnetic cylinder (2); a light source emitter matching the optical sensor (8) is fixedly mounted on the side of the positioner (5) facing the permanent magnetic cylinder (2).

2. According to the controllable permanent magnetic suspension buffer roller described in claim 1, it is characterized in that: Magnetic tiles (21) and permanent magnets (22) for reducing edge magnetic attraction effects are staggered and cross-arranged inside the permanent magnetic cylinder (2).

3. According to the controllable permanent magnetic suspension buffer roller described in claim 1, it is characterized in that: The axial rod (31) is evenly provided with pin holes (311) along its axial direction; a pin engaged with the pin hole (311) is movably installed at the bottom of the positioner (5); an axial positioning groove (51) is provided at one end of the positioner (5) facing the permanent magnet cylinder (2); the air nozzle (6) is slidably installed in the positioning groove (51); a positioning disk (52) is slidably installed in the positioner (5); a connecting rod (521) is hingedly installed between the edge of the positioning disk (52) and the air nozzle (6); an electric push rod (53) is fixedly installed in the positioner (5), and the end of the electric push rod (53) is fixedly connected to the positioning disk (52).

4. According to the controllable permanent magnetic suspension buffer roller described in claim 3, it is characterized in that: The end of the positioner (5) away from the permanent magnet cylinder (2) is a closed structure, an end cover (54) is fixedly installed at the end of the positioner (5), a plurality of filter cartridges (541) surrounding each other in layers are fixedly installed on the inner side of the end cover (54), the air nozzle (6) is connected to the closed inner cavity of the positioner (5) through a hose (60), an air intake pipe (61) is fixedly installed on the end cover (54), and the inlet end of the air intake pipe (61) is connected to the central area of ​​the filter cartridge (541).

5. According to the controllable permanent magnetic suspension buffer roller as claimed in claim 1, it is characterized in that: A circumferential separation ring (23) is provided on one side of the permanent magnetic cylinder (2) facing the aligner (5); the separation ring (23) has a conical cross section, and the separation ring (23) is located on the periphery of the optical sensor (8).

6. According to the controllable permanent magnetic suspension buffer roller as claimed in claim 2, it is characterized in that: The magnetic base (3) is provided with a vertically penetrating sinking groove (32) in the middle, the permanent magnet cylinder (2) is located directly above the sinking groove (32), and a slope structure is symmetrically arranged on the upper part of the notch of the sinking groove (32), and the slope surface is parallel to the axis of the permanent magnet cylinder (2). Permanent magnet shafts (33) are rotatably installed on both sides of the magnetic base (3), the permanent magnet shaft (33) is located below the slope structure, and the permanent magnet shaft (33), the magnetic tile (21) and the permanent magnet (22) cooperate with each other in magnetic force. A motor (34) is fixedly installed on one side of the magnetic base (3), and the output shaft of the motor (34) is fixedly connected to the permanent magnet shaft (33).

7. The controllable permanent magnetic suspension buffer roller according to claim 6, characterized in that: The slope surface of the magnetic seat (3) is rotatably mounted with a plurality of receiving shafts (35), the receiving shafts (35) are rotatably fitted with the outer wall of the permanent magnetic cylinder (2), the ends of the receiving shafts (35) are rotatably mounted with ball plungers (351), and the spherical ends of the ball plungers (351) are rollingly fitted with the outer wall of the release ring (7).

8. The controllable permanent magnetic suspension buffer roller according to claim 6, characterized in that: A shielding ring (36) is fixedly mounted on the upper part of the magnetic base (3), the shielding ring (36) surrounds the periphery of the permanent magnetic cylinder (2), and a breathable cotton board (37) is movably mounted below the slope structure of the magnetic base (3), and the cotton board (37) is located below the shielding ring (36).

9. The controllable permanent magnetic suspension buffer roller according to claim 6, characterized in that: The magnetic base (3) is evenly provided with evacuation holes (38) on one side facing the aligner (5), a wiping cavity (30) is provided on the inner side of the magnetic base (3), a plurality of wiping rods (39) are fixedly installed in the wiping cavity (30), the wiping rods (39) are arranged around the permanent magnetic shaft (33), the ends of the evacuation holes (38) are connected to the wiping cavity (30), the bottom of the magnetic base (3) is evenly provided with waste chip grooves (301) connected to the wiping cavity (30), and a waste chip box (302) is movably installed on the magnetic base (3) below the waste chip grooves (301).

10. A controllable permanent magnetic suspension buffer roller according to any one of claims 8 or 9, characterized in that: The release groove (71) is located outside the evacuation hole (38), and a through hole pointing to the evacuation hole (38) is provided at the bottom of the release groove (71). The cotton plate (37) is located between the evacuation hole (38) and the waste chip groove (301).

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