A micro motor rotor balance detection device and use method

Abstract

The invention discloses a rotor balance detection device for a micro motor and a use method, comprising a base and a PLC controller, wherein support plate structures are fixedly arranged on the upper sides of both ends of the base, a second cross bar is connected to the upper ends of the two support plate structures, a first cross bar which can be lifted up and down is arranged below the second cross bar, an electric telescopic rod for driving the first cross bar to be lifted up and down is fixedly arranged on the second cross bar, and an output end of the PLC controller is electrically connected to an input end of the electric telescopic rod; during the production process, the push rod of the electric telescopic rod can drive the first cross bar to move up and down while driving the loading and unloading components and the balance amplification detection component to move up and down, so that after the balance detection of the rotor is performed, the detection separation of the balance amplification detection component and the rotating shaft and the loading and unloading of the rotor supported by the upper side of the shaft support plate are realized synchronously, which greatly improves the efficiency while reducing the cost.

Description

Technical Field

[0001] The present invention relates to the field of motor detection equipment, and in particular to a rotor balance detection device for a micro motor and a use method thereof. Background Art

[0002] In a rotating machine, when any rotor rotates around its axis, centrifugal force is generated due to the uneven mass distribution relative to the axis. This unbalanced centrifugal force acts on the rotor bearing and causes vibration. The influence of rotor vibration on the life, reliability and stability of the machine is becoming more and more prominent. The rotor plays an important role in the motor. In order to ensure the performance of the motor, it is important to keep the rotor balanced during the processing. Otherwise, the rotor will be eccentric during operation, which will cause wear of the motor bearing, sinking of the rotor or excessive disturbance of the shaft, affecting the life of the motor. Therefore, it is necessary to detect the balance of the rotor. However, in the prior art:

[0003] During the production process, after a rotor is inspected, it is necessary to use a robot to remove the rotor, and then a new rotor to be inspected is placed back on the support frame for inspection. The process is complicated, troublesome, time-consuming and labor-intensive. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The purpose of the present invention is to provide a micro motor rotor balance detection device and a method for use in order to solve the above problems.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a micro-motor rotor balance detection device and a use method, comprising a base and a PLC controller, wherein support plate structures are fixedly arranged on the upper sides of both ends of the base, a second cross bar is connected between the upper ends of the two support plate structures, a first cross bar that can be lifted up and down is arranged below the second cross bar, an electric telescopic rod for driving the first cross bar to be lifted up and down is fixedly arranged on the second cross bar, and an output end of the PLC controller is electrically connected to an input end of the electric telescopic rod;

[0009] Two shaft support plates for supporting the rotating shafts at both ends of the rotor are arranged on the upper side of the base between the two support plate structures, and balance amplification detection components for abutting the rotating shafts at both ends of the rotor are arranged at both ends of the first cross bar, and a belt rotation drive component for driving the rotor to rotate is arranged between the two shaft support plates, and a feeding bracket structure is arranged on one side of the shaft support plate;

[0010] A loading and unloading assembly is provided between the adjacent support plate and the shaft support plate for simultaneously unloading the rotor on the upper side of the shaft support plate and moving the rotor on the feeding bracket structure to the upper side of the shaft support plate. The loading and unloading assembly is driven up and down by an electric telescopic rod.

[0011] Furthermore, the support plate structure includes support plates fixedly arranged on the upper sides of both ends of the base, support plates are fixedly connected to the lower sides of both ends of the second cross bar, the two support plates are respectively fixedly connected to the top ends of the two support plates, and the lower ends of the first cross bar are respectively fixedly connected to more than two second guide rods, and the lower end of each of the second guide rods is slidably connected to the second guide slide hole opened at the top end of the support plate.

[0012] The cam is an angular contact surface that is fixed to the top of the handlebars and the shifting mechanism is configured to move the cam face upwardly and downwardly, and the cam is configured to move the cam face upwardly and downwardly, the shifting mechanism being configured to move the cam face upwardly and downwardly.

[0013] Furthermore, two feeding bracket structures are provided, and the two feeding bracket structures are respectively arranged on one side of the two shaft support plates, and the feeding bracket structure includes a mounting support rod, the lower end of the mounting support rod is fixedly connected to the base by bolts, and a feeding slide is fixedly provided on the upper end of the mounting support rod, and the feeding slide is inclined from high to low along the direction toward the shaft support plate, and a first stop block is fixedly provided on the upper side of one end of the feeding slide close to the shaft support plate, and the feeding slide and the mounting support rod are integrally formed in a V-shape.

[0014] Furthermore, the loading and unloading assembly includes a lifting rod, the upper surface of which is an inclined sliding surface, and the inclined sliding surface is inclined from low to high along the direction toward the feeding support structure. An intermittent shifting assembly for separating and shifting two rotors entering and leaving the shaft support plate is provided on one side of the lifting rod close to the shaft support plate, and one side of the lifting rod is connected to the second guide rod.

[0015] Furthermore, the intermittent shift assembly includes a motor fixedly arranged in a lifting rod, the output shaft end of the motor is fixedly connected to more than three shift rods evenly distributed at equal angles with its axis as the center, and the output end of the PLC controller is electrically connected to the input end of the motor.

[0016] Furthermore, one side of the lifting rod is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to an adjusting slider, which is arranged on the outside of the second guide rod for sliding up and down. The outer wall of the adjusting slider is threadedly connected with a fixing bolt for fixing its position with the second guide rod.

[0017] Furthermore, at least two first guide rods are fixedly connected to the lower side of the lifting rod, and a guide slider is fixedly provided on the outer side of the shaft support plate. The guide slider is penetrated by a first guide sliding hole that cooperates with the first guide rod to slide up and down.

[0018] Furthermore, through slots for passing the rotating rod are formed at both ends of the second cross bar, a warning light is arranged on the upper side of the second cross bar, and the output end of the PLC controller is electrically connected to the input end of the warning light.

[0019] A method for using a micromotor rotor balance detection device comprises the following steps:

[0020] S1: placing the rotor on the feeding support structure, and moving the rotor on the feeding support structure to the upper side of the shaft support plate by the loading and unloading assembly;

[0021] S2: The electric telescopic rod drives the first cross bar to move downward and drives the loading and unloading components to move downward. At this time, the balance amplification detection components provided at both ends of the first cross bar abut against the rotating shafts at both ends of the rotor;

[0022] S3: The belt rotation driving component drives the rotor to rotate, thereby driving the rotating shafts at both ends of the rotor to rotate. During the rotation of the rotating shaft, the balance amplification detection component performs a balance amplification detection on the rotating shaft and transmits the detected electrical signal to the PLC controller;

[0023] S4: After the detection is completed, the electric telescopic rod drives the first cross bar to move upward while driving the loading and unloading assembly to move upward. At this time, the balance amplification detection assembly is separated from the rotating shaft, and the loading and unloading assembly moves upward to unload the rotor on the upper side of the shaft support plate and move the rotor on the feeding bracket structure to the upper side of the shaft support plate. Repeat steps S2 and S3 for detection.

[0024] (III) Beneficial effects

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. During the production process, the push rod of the electric telescopic rod moves up and down to drive the first crossbar to move up and down, and at the same time, it can drive the loading and unloading components and the balance magnification detection components to move up and down. After the balance detection of the rotor is realized, the detection separation of the balance magnification detection component and the shaft is realized simultaneously, and the upper side of the shaft support plate supports the loading and unloading of the rotor, which greatly improves efficiency and reduces costs;

[0027] 2. During the detection of the rotor shaft by the balance amplification detection component, the displacement sensor and the receiver can be used in conjunction to realize amplified detection of the displacement change of the end of the first cross bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0030] Figure 2 The present invention Figure 1 Schematic diagram of the left view structure;

[0031] Figure 3 The present invention Figure 1 A local enlarged structural schematic diagram;

[0032] Figure 4 The present invention Figure 1 Schematic diagram of the three-dimensional structure.

[0033] The reference numerals are as follows: 1, base; 2, support plate; 3, feed support structure; 3a, feed slide plate; 3b, mounting support rod; 3c, first stopper; 4, loading and unloading assembly; 401, lifting rod; 402, connecting rod; 403, second stopper; 404, motor; 405, lever; 406, first guide rod; 407, guide slider; 408, adjustment slider; 5, balance magnification detection assembly; 501, rotating rod; 502, support rod; 50 3. Lifting rod; 504. Guide slide shaft; 505. Guide slide groove; 506. Limit sleeve; 507. Displacement sensor; 508. Receiver; 509. U-shaped wheel frame; 510. Abutment roller; 6. Electric telescopic rod; 7. First cross bar; 8. Second cross bar; 8a. Through slot; 9. Rotor; 10. Rotating shaft; 11. Belt rotation drive assembly; 12. Support plate; 13. PLC controller; 14. Warning light; 15. Second guide rod; 16. Shaft support plate. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-4 As shown, the present invention provides a micro-motor rotor balance detection device and a use method, including a base 1 and a PLC controller 13, support plate structures are fixedly arranged on the upper sides of both ends of the base 1, and a second cross bar 8 is connected to each other between the upper ends of the two support plate structures, a first cross bar 7 that can be lifted up and down is arranged below the second cross bar 8, an electric telescopic rod 6 for driving the first cross bar 7 to lift up and down is fixedly arranged on the second cross bar 8, and the output end of the PLC controller 13 is electrically connected to the input end of the electric telescopic rod 6; two shaft support plates 16 for supporting the rotating shaft 10 at both ends of the rotor 9 are arranged on the upper side of the base 1 between the two support plate structures, A V-shaped shaft placement groove is provided on the upper side of the shaft support plate 16, and balance amplification detection components 5 for abutting balance amplification detection of the rotating shaft 10 at both ends of the rotor 9 are provided at both ends of the first cross bar 7. A belt rotation drive component 11 for driving the rotor 9 to rotate is provided between the two shaft support plates 16, and a feeding bracket structure 3 is provided on one side of the shaft support plate 16; a loading and unloading component 4 for simultaneously unloading and feeding the rotor 9 on the upper side of the shaft support plate 16 and moving the rotor 9 on the feeding bracket structure 3 to the upper side of the shaft support plate 16 is provided between the adjacent support plate 2 and the shaft support plate 16, and the loading and unloading component 4 is driven up and down by an electric telescopic rod 6.

[0036] The support plate structure includes a support plate 2 fixedly arranged on the upper sides of both ends of the base 1, and support plates 12 are fixedly connected to the lower sides of both ends of the second cross bar 8. The two support plates 12 are respectively fixedly connected to the top ends of the two support plates 2, and the lower ends of the first cross bar 7 are respectively fixedly connected to more than two second guide rods 15, and the lower end of each second guide rod 15 is slidably connected to the second guide slide hole opened at the top end of the support plate 2.

[0037] The balance magnification detection component 5 includes a lifting rod 503, which penetrates and slides on the first cross bar 7 in the up-down direction, and the lower end of the lifting rod 503 is fixedly connected to a U-shaped wheel frame 509, the U-shaped opening of the U-shaped wheel frame 509 faces downward, and a contact roller 510 is rotatably provided at the lower opening of the U-shaped wheel frame 509, and a guide sliding shaft 504 is fixedly provided on the upper end of the lifting rod 503, and a support rod 502 is fixedly provided on one side of the first cross bar 7 close to the lifting rod 503, and a rotating rod 501 is rotatably provided on the top of the support rod 502, and the rotating rod 501 is close to the lifting rod 503. A guide groove 505 is provided at one end for rotating and sliding with the guide slide shaft 504, and a displacement sensor 507 is fixedly provided at the other end of the rotating rod 501. The distance between the support rod 502 and the displacement sensor 507 is more than six times the distance between the support rod 502 and the lifting rod 503. A receiver 508 corresponding to the displacement sensor 507 is provided on the upper side of the first cross bar 7. The displacement sensor 507 and the receiver 508 are used to detect the displacement change of the end of the first cross bar 7. The output end of the displacement sensor 507 is electrically connected to the input end of the PLC controller 13.

[0038] See the instruction manual Figure 1 and 4 As shown, two feeding bracket structures 3 are provided, and the two feeding bracket structures 3 are respectively arranged on one side of the two shaft support plates 16, and the feeding bracket structure 3 includes a mounting support rod 3b, and the lower end of the mounting support rod 3b is fixedly connected to the base 1 by bolts, and a feeding slide plate 3a is fixedly provided on the upper end of the mounting support rod 3b, and the feeding slide plate 3a is inclined from high to low along the direction toward the shaft support plate 16, and a first stopper 3c is fixedly provided on the upper side of one end of the feeding slide plate 3a close to the shaft support plate 16, and the feeding slide plate 3a and the mounting support rod 3b are integrally formed in a V shape.

[0039] The loading and unloading assembly 4 includes a lifting rod 401, the upper surface of which is an inclined sliding surface, and the inclined sliding surface is inclined from low to high along the direction toward the feeding support structure 3. The side of the lifting rod 401 close to the shaft support plate 16 is provided with an intermittent shifting assembly for separating and shifting the two rotors 9 entering and leaving the shaft support plate 16, and one side of the lifting rod 401 is connected to the second guide rod 15.

[0040] The intermittent shifting assembly includes a motor 404 fixedly arranged in the lifting rod 401, and the output shaft end of the motor 404 is fixedly connected with three or more shifting rods 405 uniformly distributed at equal angles with its axis as the center, and the output end of the PLC controller 13 is electrically connected to the input end of the motor 404. Further, the motor 404 adopts a servo motor. In practical applications, while the electric telescopic rod 6 drives the first crossbar 7 to move upward, the PLC controller 13 controls the motor 404 to turn on, and the output shaft of the motor 404 rotates to drive the shifting rod 405 to rotate, and one of the shifting rods 405 rotates to the position between the two rotors 9 for loading and unloading, which plays a blocking role for the rotor 9 being loaded, so that the rotor 9 can stop sliding downward on the lifting rod 401, and the position stops at the shaft support plate 16. When the lifting rod 401 moves downward, it just falls into the shaft placement groove of the shaft support plate 16.

[0041] One end of the connecting rod 402 is fixedly connected to one side of the lifting rod 401, and the other end of the connecting rod 402 is fixedly connected to an adjusting slider 408. The adjusting slider 408 is slidably arranged on the outer side of the second guide rod 15, and a fixing bolt for fixing the position of the adjusting slider 408 with the second guide rod 15 is threadedly connected on the outer wall of the adjusting slider 408. More than two first guide rods 406 are fixedly connected to the lower side of the lifting rod 401, and a guide slider 407 is fixedly arranged on the outer side of the shaft support plate 16. The guide slider 407 is penetrated with a first guide sliding hole that cooperates with the first guide rod 406 to slide up and down. Through the above-mentioned specific structural design, when the electric telescopic rod 6 drives the first cross bar 7 to rise and fall, the connecting rod 402 can drive the lifting rod 401 to move up and down along the axial direction of the first guide rod 406, thereby realizing the adjustment of the height of the lifting rod 401, wherein the adjusting slider 408 can also slide up and down along the second guide rod 15 to adjust the position, thereby realizing the adjustment of the initial lifting position of the lifting rod 401, and performing fine-tuning to match the rotors 9 and the rotating shaft 10 of different sizes.

[0042] Both ends of the second crossbar 8 are provided with through slots 8a for passing the rotating rod 501, and a warning light 14 is provided on the upper side of the second crossbar 8, and the output end of the PLC controller 13 is electrically connected to the input end of the warning light 14. In actual application, after the displacement sensor 507 and the receiver 508 of the balance amplification detection component 5 cooperate to detect that the end displacement of the rotating rod 501 reaches a certain value, the detected electrical signal is transmitted to the PLC controller 13, and the PLC controller 13 controls to turn on the warning light 14 to warn the rotor with poor balance at the detection location.

[0043] Working principle:

[0044] The rotating shafts 10 at both ends of the rotor 9 are respectively placed on the feeding slides 3a of the two feeding support structures 3. The feeding slides 3a are tilted from high to low along the direction toward the shaft support plate 16, so that the rotor 9 can automatically move toward the direction of the shaft support plate 16 to replenish materials. The upper and lower material components 4 move upward under the drive of the electric telescopic rod 6. When the lifting rod 401 moves upward, the lifting rod 401 pushes the rotating shafts 10 at both ends of the rotor 9 to move upward. After the rotating shaft 10 is separated from the feeding slide 3a, it can continue to slide downward along the inclined sliding surface of the lifting rod 401 to the upper shaft placement groove of the shaft support plate 16, and the rotor 9 on the upper side of the shaft support plate 16 continues to slide downward along the inclined sliding surface of the lifting rod 401 to enter the next process;

[0045] The electric telescopic rod 6 drives the first cross bar 7 to move downward while driving the loading and unloading assembly 4 to move downward. At this time, the balance amplification detection assembly 5 provided at both ends of the first cross bar 7 abuts against the rotating shaft 10 at both ends of the rotor 9, and the abutment roller 510 of the balance amplification detection assembly 5 realizes the abutment detection of the rotating shaft 10 at both ends of the rotor 9. When the rotating shaft 10 shakes or deviates due to the balance difference, the abutment roller 510 will be pushed to shake, thereby driving the lifting rod 503 to move up and down. When the lifting rod 503 moves up and down, the guide slide shaft 504 fixedly provided at the upper end of the lifting rod 503 drives the rotating rod 501 to rotate under the support of the support rod 502 through the guide slide groove 505, wherein the distance between the support rod 502 and the displacement sensor 507 is more than six times the distance between the support rod 502 and the lifting rod 503, so that a small up and down displacement change of the lifting rod 503 can be amplified by more than six times, and can be accurately detected by the displacement sensor 507 and the receiver 508;

[0046] The belt rotation driving component 11 drives the rotor 9 to rotate, thereby driving the rotating shafts 10 at both ends of the rotor 9 to rotate. During the rotation of the rotating shaft 10, the balance amplification detection component 5 performs a balance amplification detection on the rotating shaft 10 and transmits the detected electrical signal to the PLC controller 13;

[0047] After the detection is completed, the electric telescopic rod 6 drives the first cross bar 7 to move upward while driving the loading and unloading assembly 4 to move upward. At this time, the balance amplification detection assembly 5 is separated from the rotating shaft 10, and the loading and unloading assembly 4 moves upward to realize the unloading and delivery of the rotor 9 on the upper side of the shaft support plate 16 and the movement of the rotor 9 on the feeding bracket structure 3 to the upper side of the shaft support plate 16, and repeat steps S2 and S3 for detection.

[0048] In actual applications, the push rod of the electric telescopic rod 6 can move up and down while driving the first cross bar 7 to move up and down, and can also drive the loading and unloading components 4 and the balance amplification detection component 5 to move up and down, so that after the balance detection of the rotor 9 is realized, the detection separation of the balance amplification detection component 5 and the rotating shaft 10 and the upper side of the shaft support plate 16 can be realized synchronously.

[0049] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A micro motor rotor balance detection device, characterized in that: The invention comprises a base (1) and a PLC controller (13), wherein support plate structures are fixedly arranged on the upper sides of both ends of the base (1), a second crossbar (8) is connected to the upper ends of the two support plate structures, a first crossbar (7) which can be lifted up and down is arranged below the second crossbar (8), an electric telescopic rod (6) for driving the first crossbar (7) to be lifted up and down is fixedly arranged on the second crossbar (8), and an output end of the PLC controller (13) is electrically connected to an input end of the electric telescopic rod (6); Two shaft support plates (16) for supporting the rotating shafts (10) at both ends of the rotor (9) are arranged on the upper side of the base (1) between the two support plate structures; balance amplification detection components (5) for performing abutment balance amplification detection on the rotating shafts (10) at both ends of the rotor (9) are arranged at both ends of the first crossbar (7); a belt rotation drive component (11) for driving the rotor (9) to rotate is arranged between the two shaft support plates (16); and a feeding bracket structure (3) is arranged on one side of the shaft support plate (16); A loading and unloading assembly (4) is provided between the adjacent support plate (2) and the shaft support plate (16) for simultaneously unloading and feeding the rotor (9) on the upper side of the shaft support plate (16) and moving the rotor (9) on the feeding support structure (3) to the upper side of the shaft support plate (16); the loading and unloading assembly (4) is driven to move up and down by an electric telescopic rod (6); The loading and unloading assembly (4) comprises a lifting rod (401), the upper surface of the lifting rod (401) being an inclined sliding surface, the inclined sliding surface being arranged to be inclined from low to high in a direction toward the feeding support structure (3), and an intermittent shifting assembly for separating and shifting two rotors (9) entering and leaving the shaft support plate (16) being arranged on one side of the lifting rod (401) close to the shaft support plate (16).

2. A micromotor rotor balance detection device according to claim 1, characterized in that: The support plate structure comprises support plates (2) fixedly arranged on the upper sides of both ends of the base (1); support plates (12) are fixedly connected to the lower sides of both ends of the second cross bar (8); the two support plates (12) are respectively fixedly connected to the top ends of the two support plates (2); the lower ends of the first cross bar (7) are respectively fixedly connected to two or more second guide rods (15); the lower end of each second guide rod (15) is slidably connected to a second guide sliding hole provided at the top end of the support plate (2).

3. The device for detecting rotor balance of a micro motor according to claim 1, characterized in that: The balance magnification detection component (5) comprises a lifting rod (503), the lifting rod (503) penetrates and slides on the first cross bar (7) in the up-down direction, the lower end of the lifting rod (503) is fixedly connected to a U-shaped wheel frame (509), the U-shaped opening of the U-shaped wheel frame (509) faces downward, and an abutment roller (510) is rotatably provided at the lower opening of the U-shaped wheel frame (509), the upper end of the lifting rod (503) is fixedly provided with a guide sliding shaft (504), a support rod (502) is fixedly provided on one side of the first cross bar (7) close to the lifting rod (503), a rotating rod (501) is rotatably provided on the top of the support rod (502), and the rotating rod (501) is close to the lifting rod (50 3) is provided with a guide slot (505) which is rotatably slidable with the guide slide shaft (504), a displacement sensor (507) is fixedly provided at the other end of the rotating rod (501), the distance between the supporting rod (502) and the displacement sensor (507) is more than six times the distance between the supporting rod (502) and the lifting rod (503), a receiver (508) which cooperates with the displacement sensor (507) is provided on the upper side of the first cross bar (7), the displacement sensor (507) and the receiver (508) cooperate to detect the displacement change of the end of the first cross bar (7), and the output end of the displacement sensor (507) is electrically connected to the input end of the PLC controller (13).

4. The device for detecting rotor balance of a micro motor according to claim 1, characterized in that: The feeding support structure (3) is provided with two, and the two feeding support structures (3) are respectively provided on one side of the two shaft support plates (16), and the feeding support structure (3) comprises a mounting support rod (3b), the lower end of the mounting support rod (3b) is fixedly connected to the base (1) by bolts, and a feeding slide plate (3a) is fixedly provided on the upper end of the mounting support rod (3b), and the feeding slide plate (3a) is inclined from high to low along the direction toward the shaft support plate (16), and a first stopper (3c) is fixedly provided on the upper side of one end of the feeding slide plate (3a) close to the shaft support plate (16), and the feeding slide plate (3a) and the mounting support rod (3b) are integrally formed in a V shape.

5. The device for detecting rotor balance of a micro motor according to claim 2, characterized in that: One side of the lifting rod (401) is connected to the second guide rod (15).

6. The device for detecting rotor balance of a micro motor according to claim 5, characterized in that: The intermittent shifting assembly comprises a motor (404) fixedly arranged in a lifting rod (401), the output shaft end of the motor (404) being fixedly connected to three or more shifting rods (405) uniformly distributed at equal angles with the axis of the motor as the center, and the output end of the PLC controller (13) being electrically connected to the input end of the motor (404).

7. The device for detecting rotor balance of a micro motor according to claim 5, characterized in that: One side of the lifting rod (401) is fixedly connected to one end of a connecting rod (402), and the other end of the connecting rod (402) is fixedly connected to an adjusting slider (408). The adjusting slider (408) is slidably arranged on the outside of the second guide rod (15) up and down, and a fixing bolt for fixing the position of the adjusting slider (408) with the second guide rod (15) is threadedly connected on the outer wall of the adjusting slider (408).

8. The device for detecting rotor balance of a micro motor according to claim 1, characterized in that: The lower side of the lifting rod (401) is fixedly connected to two or more first guide rods (406), and the outer side of the shaft support plate (16) is fixedly provided with a guide slider (407), and the guide slider (407) is penetrated by a first guide sliding hole that cooperates with the first guide rod (406) to slide up and down.

9. The device for detecting rotor balance of a micro motor according to claim 3, characterized in that: Through slots (8a) for passing the rotating rod (501) are provided at both ends of the second crossbar (8), a warning light (14) is provided on the upper side of the second crossbar (8), and the output end of the PLC controller (13) is electrically connected to the input end of the warning light (14).

10. A method for using a micromotor rotor balance detection device according to any one of the above claims, characterized in that: The following steps are involved: S1: placing the rotor (9) on the feeding support structure (3), and moving the rotor (9) on the feeding support structure (3) to the upper side of the shaft support plate (16) by the loading and unloading assembly (4); S2: The electric telescopic rod (6) drives the first cross bar (7) to move downward and drives the loading and unloading assembly (4) to move downward. At this time, the balance amplification detection assemblies (5) provided at both ends of the first cross bar (7) abut against the rotating shafts (10) at both ends of the rotor (9); S3: The rotating drive component (11) drives the rotor (9) to rotate, thereby driving the rotating shafts (10) at both ends of the rotor (9) to rotate. During the rotation of the rotating shaft (10), the balance amplification detection component (5) performs a balance amplification detection on the rotating shaft (10) and transmits the detected electrical signal to the PLC controller (13); S4: After the detection is completed, the electric telescopic rod (6) drives the first cross bar (7) to move upward and drives the loading and unloading assembly (4) to move upward. At this time, the balance amplification detection assembly (5) is separated from the rotating shaft (10), and the loading and unloading assembly (4) moves upward to discharge the rotor (9) on the upper side of the shaft support plate (16) and move the rotor (9) on the feeding support structure (3) to the upper side of the shaft support plate (16). Repeat steps S2 and S3 to perform the detection.

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