Pole-splitting magnetizing mechanism of motor rotor

Abstract

The invention discloses a split-pole magnetizing mechanism of a motor rotor, and relates to the technical field of motor manufacturing, the split-pole magnetizing mechanism comprises a base, the upper surface of the base is fixedly connected with a placing frame, the upper surface of the base is also fixedly connected with a fixing frame, and a lower side supporting column of the fixing frame penetrates through the side of the placing frame; a magnetizing clamp is fixedly connected to the upper surface of the containing frame, a magnetizing rotor is placed in the magnetizing clamp, a positioning column is arranged on the lower side of the center of the magnetizing clamp in a nested mode, and an upper air cylinder is fixedly connected to the upper surface of the fixing frame. According to the split-pole magnetizing mechanism of the motor rotor, a user can place the magnetizing rotor in the center of the interior of the magnetizing clamp, at the moment, the edge side of the magnetic shoe assembly is attached to the interior of the magnetizing clamp, a power source of the magnetizing clamp is started, the power source is connected with positive and negative pole magnetizing as an S pole and connected with reverse negative and positive pole magnetizing as an N pole, and through split magnetizing operation of the S pole and the N pole, the magnetizing efficiency is improved. And the magnetizing effect on the magnetic shoe assembly can be further improved.

Description

Technical Field

[0001] The invention relates to the technical field of motor manufacturing, and in particular to a polarization magnetization mechanism for a motor rotor. Background Art

[0002] The magnetization of the motor rotor is an important part of the motor manufacturing process. Through reasonable magnetization methods and equipment selection, the rotor can be ensured to obtain stable magnetism, thereby improving the performance and operating efficiency of the motor. The basic principle of motor rotor magnetization is to use an external magnetic field to magnetize the magnetic material inside the rotor so that the rotor obtains the required magnetism. During the magnetization process, the external magnetic field is generated by a magnetizing device (such as a magnetizer) and acts on the magnetic material on the rotor. When the external magnetic field is strong enough, the magnetic domains inside the magnetic material will rearrange to form a stable magnetization state. With the continuous development of motor technology, the requirements for the magnetism of the motor rotor are getting higher and higher. The motor rotor magnetization mechanism is one of the key equipment in motor manufacturing. It is mainly used to magnetize the rotor of the motor.

[0003] Prior art 1 (publication number: CN221841692U, Chinese patent with publication date of 2024-10-15) A motor rotor post-magnetization equipment, including a frame, a transfer station, a transfer mechanism 1, a transfer mechanism 2, a transfer mechanism 3, an alignment mechanism, a magnetization mechanism A, a magnetization mechanism B, a material unloading conveyor line, an NG conveyor line and an automatic lithium-based grease coating mechanism. The transfer mechanism 1, the alignment mechanism, the magnetization mechanism A, the magnetization mechanism B and the transfer mechanism 3 are arranged on one side of the top of the frame, and a transfer mechanism 2 is provided on the other side of the top of the frame corresponding to the magnetization mechanism A and the magnetization mechanism B. The NG conveyor line and the transfer mechanism are respectively arranged on one side of the magnetization mechanism B, and an automatic lithium-based grease coating mechanism is provided on the front side of the unloading conveyor line. By setting up magnetizing mechanism A and magnetizing mechanism B, the rotor can be magnetized twice, which can more effectively eliminate the bias magnetism in the magnetic steel and avoid overloading of the magnetizing equipment. The magnetization saturation degree is good, the product quality is stable, and there is no need for manual participation in production. The production efficiency is high, the product quality is stable, and the labor cost is reduced.

[0004] There is also prior art 2 (publication number: CN113972798B, Chinese patent published on 2023-02-21) a rotor positioning device, including a support, a driver is provided on the support, the driver is connected to a positioning structure, a positioning groove is provided on the rotor, and the driver drives the positioning structure to move on the support so that the positioning structure abuts against the surface of the rotor, and the positioning structure and the rotor rotate relative to each other so that the positioning structure is inserted into the positioning groove to achieve the positioning of the rotor. The provided rotor positioning device is used for secondary positioning of the rotor placed in the positioning station, and the positioning structure is used to position the rotor before magnetization, which is not only simple in structure and easy to operate, but also saves costs.

[0005] Although the existing technologies 1 and 2 can magnetize the motor rotor, the magnetization process only completes the magnetization operation at one time. The saturation of the magnetic tiles after magnetization is low, which makes the rotor performance after magnetization poor, the cost increases and is not competitive, and the finished product advantage is not high. Therefore, we propose a polarization magnetization mechanism for the motor rotor to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a polarization magnetizing mechanism for a motor rotor, so as to solve the problem in the current market proposed by the above background technology that the magnetizing operation is completed directly and once during the magnetizing process, the saturation of the magnetic tile after magnetization is low, which makes the rotor performance after magnetization poor, the cost increases and is not competitive, and the finished product advantage is not high.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a polarization magnetization mechanism for a motor rotor, comprising a base, a placement frame is fixedly connected to the upper surface of the base, and a fixing frame is also fixedly connected to the upper surface of the base, and the lower support column of the fixing frame passes through the side of the placement frame, a magnetization clamp is fixedly connected to the upper surface of the placement frame, and a magnetization rotor is placed inside the magnetization clamp, and a positioning column is nested at the lower side of the center of the magnetization clamp.

[0008] Preferably, an upper cylinder is fixedly connected to the upper surface of the fixing frame, and a fixing sleeve is fixedly connected to the lower side of the output end of the upper cylinder, and the interior of the fixing sleeve is arranged in a hollow structure, and the central axis of the fixing sleeve is in the same straight line as the central axis of the magnetizing fixture.

[0009] Preferably, a lower cylinder is arranged on the side of the upper surface of the base, and a movable plate is fixedly connected to the output end of the lower cylinder, and the movable plate is nested and connected to the outer side of the lower support column of the fixed frame, and two groups of lower cylinders are symmetrically arranged about the center end of the base.

[0010] Preferably, a servo motor is fixedly arranged at the center of the lower surface of the movable plate, and the output shaft end of the servo motor is fixedly connected to the lower end of the positioning column, and the axial length of the positioning column and the servo motor are the same.

[0011] Preferably, the movable plate forms a sliding structure with the lower support column of the fixed frame through the lower cylinder, and the positioning column forms a rotating structure with the inside of the magnetizing fixture through the servo motor.

[0012] Preferably, an iron core is arranged inside the magnetizing fixture, and a magnetizing coil is wound around the outer side of the iron core, and two groups of iron cores are arranged symmetrically about the center point of the magnetizing fixture, and the magnetic poles of the two groups of magnetizing coils are the same.

[0013] Preferably, a rotor housing is provided on the outer side of the magnetized rotor, and a magnetic tile assembly is provided at the outer edge of the rotor housing, and eight groups of the magnetic tile assemblies are distributed in a circular array along the outer side of the rotor housing.

[0014] Preferably, the magnetic tile assembly includes N-pole magnetic tiles and S-pole magnetic tiles, and four groups of N-pole magnetic tiles and four groups of S-pole magnetic tiles are provided, and the N-pole magnetic tiles and the S-pole magnetic tiles are distributed and arranged at intervals.

[0015] Preferably, the rotor housing is nested inside the magnetizing fixture, and the lower end of the rotor housing is nested and docked with the upper end of the positioning column, and the rotor housing forms a rotating structure with the magnetizing fixture through the positioning column.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the power supply is connected to the positive and negative poles to magnetize the S pole, and the reverse negative and positive poles are connected to magnetize the N pole. Through the separate magnetization operation of the S pole and the N pole, the lower cylinder moves upward after the first magnetization, and the servo motor is controlled by PLC to turn 90 degrees and then move downward for the second magnetization. After the entire N pole magnetization is completed, after switching the power supply, the lower cylinder moves upward, rotates 45 degrees, and then moves downward for the third magnetization of the S pole, and then moves upward and rotates 90 degrees to magnetize the S pole downward for the fourth time, and the return magnetization rotor of the upper cylinder is ejected and taken out.

[0017] The magnetizing fixture is provided with an iron core, and the magnetizing coil is wound on the outside of the iron core. When the magnetizing fixture is charged, the magnetizing coil and the iron core will generate a strong magnetic field under the action of voltage and capacitance, thereby magnetizing the magnetic tile assembly arranged on the outside of the rotor shell of the magnetizing rotor.

[0018] Furthermore, the user can place the magnetizing rotor at the inner center of the magnetizing fixture. At this time, the side of the magnetic tile assembly fits with the inner part of the magnetizing fixture, and the power supply of the magnetizing fixture is started. The power supply is connected to the positive and negative poles for magnetizing as the S pole, and the reverse negative and positive poles for magnetizing as the N pole. Through the separate magnetizing operation of the S pole and the N pole, the magnetizing effect of the magnetic tile assembly can be further improved.

[0019] The user places the magnetizing rotor at the center of the magnetizing fixture and starts the upper cylinder, which can drive the fixing sleeve to move downward. Since the interior of the fixing sleeve is hollow, when the fixing sleeve enters the center of the magnetizing fixture while moving downward, the magnetizing rotor can be pressed down and fixed synchronously. At this time, the fixing sleeve can cover the upper end of the magnetizing rotor, thereby further improving the magnetization effect.

[0020] Start the lower cylinder, which can drive the moving plate to move upward along the lower support column of the fixed frame, so that the moving plate drives the servo motor to move upward. When the servo motor moves upward, it will synchronously drive the positioning column to move upward. At this time, the positioning column will resist the lower end of the magnetizing rotor. The positioning column and the fixed sleeve cooperate with each other, which can further improve the stability of the magnetizing rotor placed inside the magnetizing fixture, thereby ensuring the subsequent magnetizing effect. Further, the upper cylinder of the opening button is pressed down and fixed, and the lower cylinders on both sides move downward at the same time, and the first magnetization is 1 to 5 poles. After the end, the lower cylinder is started to move upward, so that the magnetization rotor is separated from the center of the magnetization fixture. After the servo motor is started to rotate 180 degrees, the magnetization rotor rotates synchronously under the driving action of the positioning column, and the lower cylinder drives the magnetization rotor into the magnetization fixture through the positioning column to magnetize 3 to 7 poles for the second time; after the positive and negative poles of the power supply are switched, the S pole is charged twice, and the lower cylinder is started to move upward again. After the servo motor receives the instruction and rotates back 90 degrees, the lower cylinder is used to drive the magnetization rotor downward again through the positioning column for the third magnetization operation; after completion, the lower cylinder moves upward, and after the center of the servo motor rotates 180 degrees, the lower cylinder is started to move downward to complete the fourth magnetization operation, the lower cylinder moves upward, and at the same time, the upper cylinder is separated from the product and moves upward, and the magnetization rotor is taken out. In this way, the eight-pole magnetization of the entire magnetization rotor is completed, and the magnetization saturation reaches more than 99%. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure when the present invention is working.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure when the present invention is not working.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the magnetized rotor of the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotor housing of the present invention.

[0025] Figure 5 It is a schematic diagram of the top view structure of the rotor housing of the present invention.

[0026] Figure 6 It is a schematic diagram of the top view of the magnetizing fixture of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional cross-sectional structure of the present invention.

[0028] Figure 8 It is a schematic diagram of the three-dimensional cross-sectional structure of the magnetizing fixture of the present invention.

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the movable plate of the present invention.

[0030] In the figure: 1. placement rack; 2. fixing rack; 3. base; 4. lower cylinder; 5. upper cylinder; 6. fixing sleeve; 7. magnetizing rotor; 8. magnetizing fixture; 9. servo motor; 10. positioning column; 11. moving plate; 12. magnetic tile assembly; 13. N-pole magnetic tile; 14. S-pole magnetic tile; 15. rotor housing; 16. iron core; 17. magnetizing coil. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1: Figure 1 , Figure 2 , Figure 7 and Fig. 9 The technical scheme shown, the present invention provides the following technical scheme: a polarization magnetizing mechanism of a motor rotor, disclosing an upper cylinder 5 and a lower cylinder 4, the upper cylinder 5 and the lower cylinder 4 cooperate with each other to limit the magnetized rotor 7: the upper surface of the base 3 is fixedly connected with a placing frame 1, and the upper surface of the base 3 is also fixedly connected with a fixing frame 2, and the lower support column of the fixing frame 2 passes through the side of the placing frame 1; the upper surface of the fixing frame 2 is fixedly connected with an upper cylinder 5, and the lower side of the output end of the upper cylinder 5 is fixedly connected with a fixing sleeve 6, and the interior of the fixing sleeve 6 is arranged in a hollow structure, and the central axis of the fixing sleeve 6 is in the same straight line with the central axis of the magnetizing fixture 8, the movable plate 11 forms a sliding structure with the lower support column of the fixing frame 2 through the lower cylinder 4, and the positioning column 10 forms a rotating structure with the inside of the magnetizing fixture 8 through the servo motor 9.

[0033] The user places the magnetizing rotor 7 at the center of the magnetizing fixture 8 and starts the upper cylinder 5. The upper cylinder 5 can drive the fixing sleeve 6 to move downward. Since the fixing sleeve 6 is hollow inside, when the fixing sleeve 6 enters the center of the magnetizing fixture 8 while moving downward, the magnetizing rotor 7 can be pressed down and fixed synchronously. At this time, the fixing sleeve 6 can cover the upper end of the magnetizing rotor 7, thereby further improving the magnetization effect.

[0034] Embodiment 2: Figure 3 , Figure 4 , Figure 5 , Figure 6 and Fig. 9The technical solution shown in the figure, the present invention provides the following technical solution: a polarization magnetization mechanism of a motor rotor, which discloses: a magnetization fixture 8, through which a magnetic tile assembly 12 can be magnetized, the upper surface of the placement frame 1 is fixedly connected with the magnetization fixture 8, and a magnetization rotor 7 is placed inside the magnetization fixture 8, and a positioning column 10 is nested at the lower side of the center of the magnetization fixture 8; an iron core 16 is arranged inside the magnetization fixture 8, and a magnetization coil 17 is wound around the outer side of the iron core 16, and the iron core 16 is about Two groups of magnetizing coils 17 are symmetrically arranged at the center point of the magnetizing fixture 8, and the magnetic poles of the two groups are the same. A rotor shell 15 is arranged on the outside of the magnetizing rotor 7, and a magnetic tile assembly 12 is arranged at the outer edge of the rotor shell 15, and there are eight groups of magnetic tile assemblies 12 distributed in a circular array along the outer side of the rotor shell 15. The magnetic tile assembly 12 includes N-pole magnetic tiles 13 and S-pole magnetic tiles 14, and there are four groups of N-pole magnetic tiles 13 and S-pole magnetic tiles 14 respectively, and the N-pole magnetic tiles 13 and S-pole magnetic tiles 14 are distributed at intervals.

[0035] The magnetizing fixture 8 is provided with an iron core 16, and a magnetizing coil 17 is wound around the outside of the iron core 16. When the magnetizing fixture 8 is charged, the magnetizing coil 17 and the iron core 16 will generate a strong magnetic field under the action of voltage and capacitance, thereby magnetizing the magnetic tile assembly 12 provided on the outside of the rotor shell 15 of the magnetizing rotor 7.

[0036] Further, the user can place the magnetizing rotor 7 at the inner center of the magnetizing fixture 8. At this time, the side of the magnetic tile assembly 12 fits with the inner part of the magnetizing fixture 8. The power supply of the magnetizing fixture 8 is started. The positive and negative poles of the power supply are connected to the S pole, and the reverse negative and positive poles are connected to the N pole. The magnetizing effect of the magnetic tile assembly 12 can be further improved by the separate magnetizing operation of the S pole and the N pole. The lower cylinder 4 is started. The lower cylinder 4 can drive the movable plate 11 to move upward stably along the lower support column of the fixed frame 2, so that the movable plate 11 drives the servo motor 9 to move upward. When the servo motor 9 moves upward, it will synchronously drive the positioning column 10 to move upward. At this time, the positioning column 10 will resist the lower end of the magnetizing rotor 7. The positioning column 10 cooperates with the fixed sleeve 6 to further improve the stability of the magnetizing rotor 7 placed inside the magnetizing fixture 8, thereby ensuring the subsequent magnetization effect.

[0037] Embodiment 3: Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Fig. 9The technical scheme shown in the invention provides the following technical scheme: a polarization magnetizing mechanism for a motor rotor, disclosing a servo motor 9, through which the servo motor 9 can drive the magnetized rotor 7 to rotate four times, thereby realizing four magnetizing treatments: a lower cylinder 4 is arranged on the side of the upper surface of the base 3, and the output end of the lower cylinder 4 is fixedly connected to a movable plate 11, and the movable plate 11 is nested and connected to the outer side of the lower support column of the fixed frame 2, and at the same time, two groups of lower cylinders 4 are symmetrically arranged about the central end of the base 3, a servo motor 9 is fixedly arranged at the center of the lower surface of the movable plate 11, and the output shaft end of the servo motor 9 is fixedly connected to the lower end of the positioning column 10, and the axial degree of the positioning column 10 is the same as that of the servo motor 9, a rotor housing 15 is nested inside the magnetizing fixture 8, and the lower end of the rotor housing 15 is nested and docked with the upper end of the positioning column 10, and the rotor housing 15 forms a rotating structure with the magnetizing fixture 8 through the positioning column 10.

[0038] The upper cylinder 5 is pressed down and fixed by the opening button, and the lower cylinders 4 on both sides move downward at the same time, and the first magnetization 1-5 poles are magnetized. After the completion, the lower cylinder 4 is started to move upward, so that the magnetized rotor 7 is separated from the center of the magnetization fixture 8. After the servo motor 9 is started to rotate 180 degrees, the magnetized rotor 7 is synchronously rotated under the driving action of the positioning column 10, and the lower cylinder 4 drives the magnetized rotor 7 to enter the magnetization fixture 8 through the positioning column 10 for the second magnetization of 3-7 poles; after the positive and negative poles of the power supply are switched, the S pole is charged twice, and the lower cylinder 4 is started to move upward again. After the servo motor 9 receives the instruction and rotates back 90 degrees, the lower cylinder 4 is used to drive the magnetized rotor 7 to move downward again through the positioning column 10 for the third magnetization operation; after completion, the lower cylinder 4 moves upward, and after the center of the servo motor 9 rotates 180 degrees, the lower cylinder 4 is started to move downward to complete the fourth magnetization operation, the lower cylinder 4 moves upward, and at the same time, the upper cylinder 5 is separated from the product and moves upward, and the magnetized rotor 7 is taken out, so that the eight-pole magnetization of the entire magnetized rotor 7 is completed, and the magnetization saturation reaches more than 99%.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A polarization magnetization mechanism for a motor rotor, comprising a base (3), wherein a placement frame (1) is fixedly connected to the upper surface of the base (3), and a fixing frame (2) is also fixedly connected to the upper surface of the base (3), and a lower support column of the fixing frame (2) passes through the side of the placement frame (1), characterized in that: A magnetizing fixture (8) is fixedly connected to the upper surface of the placement rack (1), a magnetizing rotor (7) is placed inside the magnetizing fixture (8), and a positioning column (10) is nested at the lower side of the center of the magnetizing fixture (8).

2. The polarization magnetization mechanism of a motor rotor according to claim 1, characterized in that: An upper cylinder (5) is fixedly connected to the upper surface of the fixing frame (2), and a fixing sleeve (6) is fixedly connected to the lower side of the output end of the upper cylinder (5), and the interior of the fixing sleeve (6) is arranged in a hollow structure, and the central axis of the fixing sleeve (6) and the central axis of the magnetizing fixture (8) are on the same straight line.

3. The polarization magnetization mechanism of a motor rotor according to claim 1, characterized in that: A lower cylinder (4) is arranged on the side of the upper surface of the base (3), and a movable plate (11) is fixedly connected to the output end of the lower cylinder (4), and the movable plate (11) is nested and connected to the outer side of the lower support column of the fixed frame (2), and two groups of lower cylinders (4) are symmetrically arranged about the central end of the base (3).

4. The polarization magnetization mechanism of a motor rotor according to claim 3, characterized in that: A servo motor (9) is fixedly arranged at the center of the lower surface of the movable plate (11), and the output shaft end of the servo motor (9) is fixedly connected to the lower end of the positioning column (10), and the axial length of the positioning column (10) is the same as that of the servo motor (9).

5. The polarization magnetization mechanism for a motor rotor according to claim 4, characterized in that: The movable plate (11) forms a sliding structure through the lower cylinder (4) and the lower support column of the fixed frame (2), and the positioning column (10) forms a rotating structure through the servo motor (9) and the inside of the magnetizing clamp (8).

6. The polarization magnetization mechanism for a motor rotor according to claim 1, characterized in that: An iron core (16) is arranged inside the magnetizing fixture (8), and a magnetizing coil (17) is wound around the outer side of the iron core (16). Two groups of the iron core (16) are symmetrically arranged about the center point of the magnetizing fixture (8), and the two groups of magnetizing coils (17) have the same magnetic poles.

7. The polarization magnetization mechanism for a motor rotor according to claim 1, characterized in that: A rotor housing (15) is provided on the outer side of the magnetized rotor (7), and a magnetic tile assembly (12) is provided at the outer edge of the rotor housing (15), and eight groups of the magnetic tile assemblies (12) are distributed in a circular array along the outer side of the rotor housing (15).

8. The polarization magnetization mechanism for a motor rotor according to claim 7, characterized in that: The magnetic tile assembly (12) comprises N-pole magnetic tiles (13) and S-pole magnetic tiles (14), and four groups of the N-pole magnetic tiles (13) and the S-pole magnetic tiles (14) are provided respectively, and the N-pole magnetic tiles (13) and the S-pole magnetic tiles (14) are arranged in an alternately distributed manner.

9. The polarization magnetization mechanism for a motor rotor according to claim 1, characterized in that: The rotor housing (15) is nested inside the magnetizing fixture (8), and the lower end of the rotor housing (15) and the upper end of the positioning column (10) are nested and docked, and the rotor housing (15) and the magnetizing fixture (8) form a rotating structure through the positioning column (10).

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