Hollow cup motor rotor polishing mechanism

Abstract

The utility model relates to the technical field of coreless motor manufacturing, in particular to a coreless motor rotor polishing mechanism which comprises a base, a driving mechanism is mounted in the base, a polishing mechanism and an autorotation mechanism are arranged above the driving mechanism, the polishing mechanism is rotatably connected to the base, and the autorotation mechanism is slidably arranged on the base. The autorotation mechanism is located on one side of the polishing mechanism. The autorotation mechanism comprises a second driven bevel gear meshed with the driving mechanism, the second driven bevel gear is fixedly connected to the bottom of a rotating shaft, and a sliding block is rotationally connected to the outer wall, close to the bottom, of the rotating shaft; according to the hollow cup motor rotor polishing mechanism, the running directions of the polishing mechanism and the autorotation mechanism are opposite, so that a better polishing effect can be achieved after a polishing belt makes contact with a rotor, meanwhile, the contact between the rotor and the polishing belt is surface contact, compared with a point contact mode, the polishing area of surface contact is larger and uniform, the uniformity of polishing uniformity can be achieved, and the polishing efficiency is improved. And the polishing effect is further improved.

Description

Technical Field

[0001] This utility model relates to the field of hollow cup motor manufacturing technology, specifically a hollow cup motor rotor polishing mechanism. Background Technology

[0002] Coreless motors are widely used in micro power tools, household appliances, and toys. The rotor structure of a coreless motor is relatively complex, typically consisting of multiple parts, including the rotor core, windings, and an external casing. To improve the performance and lifespan of a coreless motor, the surface finish and electrical properties of the rotor are crucial, thus requiring effective polishing. However, existing rotor polishing methods involve point contact between the polishing strip and the rotor, resulting in poor polishing effects and inconvenient rotor handling, thereby affecting polishing efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a hollow cup motor rotor polishing mechanism, which solves the technical problems of poor rotor polishing effect and inconvenient handling.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a hollow cup motor rotor polishing mechanism, including a base, a drive mechanism installed in the base, a polishing mechanism and a rotation mechanism provided above the drive mechanism, the polishing mechanism being rotatably connected to the base, the rotation mechanism being slidably disposed on the base, and the rotation mechanism being located on one side of the polishing mechanism;

[0005] The self-rotating mechanism includes a driven bevel gear two that meshes with the driving mechanism. The driven bevel gear two is fixedly connected to the bottom of the rotating shaft. A slider is rotatably connected to the outer wall of the rotating shaft near the bottom. The slider is slidably disposed in a sliding hole opened on the base. An electric push rod connected to the slider is also installed in the sliding hole. A fixed plate is fixedly disposed on the outer wall of the rotating shaft. A movable plate is elastically connected to the fixed plate by a spring. The movable plate is sleeved on the rotating shaft. A limiting component connected to the movable plate is also provided inside the rotating shaft.

[0006] Preferably, the drive mechanism includes a motor installed inside the base, a spline shaft fixed on the output shaft of the motor, a spline sleeve fixed on the outer wall of the spline shaft near the motor end and fitted on the outer wall of the end away from the motor, a second drive bevel gear fixed on the spline sleeve and meshing with a second driven bevel gear, and the spline sleeve is rotatably connected to the bottom of the rotating shaft through a connecting block.

[0007] Preferably, the polishing mechanism includes a driven bevel gear one that meshes with the driving bevel gear one. The driven bevel gear one is fixed to the bottom of the roller shaft one. Two roller shafts two are provided on one side of the roller shaft one. Both roller shaft one and roller shaft two are rotatably connected to the base, and polishing belts are wound around the outer walls of roller shaft one and roller shaft two.

[0008] Preferably, the limiting component includes a connecting rod movably connected inside the rotating shaft, the bottom of the connecting rod being fixedly connected to the inner wall of the movable disk, a top post being fixedly provided on the top of the connecting rod, at least two limiting blocks being provided on the outer side of the top post, and both limiting blocks being slidably connected to the inner side of the top of the rotating shaft, and a spring being provided at the bottom of the limiting block being fixedly connected to the inner wall of the rotating shaft.

[0009] Preferably, the top of the top column is conical.

[0010] Preferably, the base is further provided with two symmetrically arranged pressure rods, and both pressure rods are located on one side of the rotation mechanism, with a pressing slope at the bottom of one end of each pressure rod.

[0011] By employing the above technical solution, this utility model provides a polishing mechanism for a hollow cup motor rotor, which has at least the following beneficial effects:

[0012] 1. The hollow cup motor rotor polishing mechanism, by setting up a drive mechanism and a polishing mechanism, makes the polishing mechanism run in the opposite direction to the rotation mechanism under the action of the drive mechanism. In this way, after the polishing belt comes into contact with the rotor, a better polishing effect can be achieved. At the same time, the contact between the rotor and the polishing belt is a surface contact. Compared with the point contact method, the polishing area of ​​the surface contact is larger and more uniform, which can achieve uniform polishing and further improve the polishing effect.

[0013] 2. The hollow cup motor rotor polishing mechanism, by setting a self-rotating mechanism, can drive the rotor to rotate in the opposite direction when the polishing belt rotates, so that the outer wall of the rotor can be fully polished. At the same time, under the action of the limiting component, when the movable disk moves upward under the elastic force of the spring, the limiting block can protrude from the rotating shaft. In this way, the rotor will be clamped between the movable disk and the limiting block, making it more stable during polishing and improving the polishing quality of the rotor. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0015] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0016] Figure 2 This is a schematic diagram showing the connection between the drive mechanism of this utility model and the polishing mechanism and the rotation mechanism respectively;

[0017] Figure 3This is a schematic diagram of the self-rotating mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the rotating shaft of this utility model;

[0019] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A;

[0020] Figure label:

[0021] 1. Base; 2. Drive mechanism; 201. Motor; 202. Splined shaft; 203. Driving bevel gear one; 204. Splined sleeve; 205. Driving bevel gear two; 3. Polishing mechanism; 301. Driven bevel gear one; 302. Roller one; 303. Roller two; 304. Polishing belt; 4. Rotation mechanism; 401. Driven bevel gear two; 402. Rotating shaft; 403. Connecting block; 404. Slider; 405. Electric push rod; 406. Fixed plate; 407. Spring one; 408. Movable plate; 409. Limiting assembly; 4091. Connecting rod; 4092. Top column; 4093. Limiting block; 4094. Spring two; 5. Pressure rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The coreless motor 201 is a special type of motor 201, named for its structural features. Its main characteristic is that the rotor of the motor 201 has a hollow design, hence the name "coreless." This design allows the motor 201 to provide high power and efficiency while being small in size and light in weight.

[0024] Due to the shortcomings of existing technologies, such as poor polishing effect and inconvenient handling, please refer to... Figures 1-5This utility model provides a rotor polishing mechanism 3 for a hollow cup motor 201. The polishing mechanism 3 and the rotation mechanism 4 operate in opposite directions, so that the polishing belt 304 can achieve a better polishing effect after contacting the rotor. At the same time, the contact between the rotor and the polishing belt 304 is a surface contact, which has a larger and more uniform polishing area compared to point contact, thus achieving uniform polishing and further improving the polishing effect. The mechanism includes a base 1, a drive mechanism 2 installed in the base 1, and a polishing mechanism 3 and a rotation mechanism 4 above the drive mechanism 2. The polishing mechanism 3 is rotatably connected to the base 1, and the rotation mechanism 4 is slidably mounted on the base 1 and located on one side of the polishing mechanism 3. In use, the rotor is placed on the rotation mechanism 4, and then the drive mechanism 2 is used to make the polishing mechanism 3 and the rotation mechanism 4 rotate synchronously, and their rotation directions are exactly opposite. Then the rotation mechanism 4 gradually approaches the polishing mechanism 3, and under the action of the polishing belt 304, the outer wall of the rotor is fully polished.

[0025] To allow the rotor to approach the polishing mechanism 3 and perform the polishing operation, please refer to... Figure 3 The self-rotating mechanism 4 includes a driven bevel gear 401 that meshes with the drive mechanism 2. The driven bevel gear 401 is fixed to the bottom of the rotating shaft 402. A slider 404 is rotatably connected to the outer wall of the rotating shaft 402 near the bottom. The slider 404 is slidably disposed in a sliding hole opened on the base 1. An electric push rod 405 connected to the slider 404 is also installed in the sliding hole. A fixed plate 406 is fixed to the outer wall of the rotating shaft 402. A movable plate 408 is elastically connected to the fixed plate 406 by a spring 407. The movable plate 408 is sleeved on the rotating shaft 402. A limiting device connected to the movable plate 408 is also provided inside the rotating shaft 402. When the movable disk 408 is pressed down, it will not push out the limiting component 409. At this time, the rotor can be placed on the rotating shaft 402. After the rotor is placed, under the elastic force of the second spring 4094, the movable disk 408 moves upward. The movable disk 408 pushes the rotor upward and pushes out the limiting component 409. At this time, the rotor will be clamped between the movable disk 408 and the limiting component 409, thus fixing the rotor. At this time, the drive mechanism 2 drives the rotating shaft 402 to rotate through the meshing action with the driven bevel gear 401. Then, the electric push rod 405 drives the rotor to approach the polishing mechanism 3 and perform polishing operation.

[0026] To achieve synchronous driving of the polishing mechanism 3 and the rotation mechanism 4, please refer to section 2. The driving mechanism 2 includes a motor 201 installed inside the base 1. A splined shaft 202 is fixed on the output shaft of the motor 201. A splined sleeve 204 is fitted on the outer wall of the splined shaft 202 near the motor 201, which engages with the first driving bevel gear 203. A second driving bevel gear 205 is fixed on the splined sleeve 204, which meshes with the second driven bevel gear 401. The splined sleeve 204 is connected by a connecting block 40. 3 is rotatably connected to the bottom of the rotating shaft 402; the motor 201 can drive the spline shaft 202 to rotate, and the spline shaft 202 drives the polishing mechanism 3 to work through the first active bevel gear 203, and at the same time drives the self-rotating mechanism 4 to rotate through the spline sleeve 204 and the second active bevel gear 205. Due to the different positions of the first active bevel gear 203 and the second active bevel gear 205, the polishing mechanism 3 and the self-rotating mechanism 4 can run in opposite directions. In this way, after the polishing belt 304 contacts the rotor, a better polishing effect can be achieved.

[0027] To perform polishing on the rotor surface, please refer to... Figure 2 The polishing mechanism 3 includes a driven bevel gear 301 that meshes with the driving bevel gear 203. The driven bevel gear 301 is fixed to the bottom of the roller shaft 302. Two roller shafts 303 are provided on one side of the roller shaft 302. Both roller shafts 302 and 303 are rotatably connected to the base 1. A polishing belt 304 is wound around the outer wall of the roller shafts 302 and 303. Through the meshing action of the driving bevel gear 203 and the driven bevel gear 301, the roller shaft 302 can be driven to rotate, thereby causing the polishing belt 304 to rotate.

[0028] To secure the rotor, please refer to... Figure 4 and Figure 5 The limiting assembly 409 includes a connecting rod 4091 movably connected inside the rotating shaft 402. The bottom of the connecting rod 4091 is fixedly connected to the inner wall of the movable disk 408. A top post 4092 is fixedly provided on the top of the connecting rod 4091. At least two limiting blocks 4093 are provided on the outer side of the top post 4092, and both limiting blocks 4093 are slidably connected to the inner side of the top of the rotating shaft 402. A spring 4094 is provided at the bottom of the limiting block 4093 and is fixedly connected to the inner wall of the rotating shaft 402. The movable disk 408 When the 08 moves downward, the top post 4092 will not push out the limiting block 4093. The limiting block 4093 retracts back into the rotating shaft 402, thus not affecting the taking and putting away of the rotor. Conversely, after the movable disk 408 moves upward under the elastic force of the spring 407, the top post 4092 pushes out the limiting block 4093. In this way, the top of the rotor will be restricted by the limiting block 4093 and will not detach from the rotating shaft 402. The rotor will be fixed between the movable disk 408 and the limiting block 4093 to achieve the fixation of the rotor.

[0029] To ensure that the top post 4092 can be pushed out of the limit position, the top of the top post 4092 is made into a pointed cone shape.

[0030] To facilitate the loading and unloading of the rotor, two symmetrically arranged pressure rods 5 are fixed on the base 1, and both pressure rods 5 are located on one side of the self-rotating mechanism 4. The bottom of one end of the pressure rod 5 is provided with a pressing slope. When the electric push rod 405 pushes the self-rotating mechanism 4 to one side, the surface of the movable disk 408 is pressed downward by the pressure rods 5. At this time, the limiting component 409 is retracted into the rotating shaft 402, and the operator can directly load and unload the rotor. Conversely, when the movable disk 408 moves away from the pressure rods 5, the spring 407 automatically returns to its original position, thereby achieving automatic fixing of the rotor.

[0031] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotor polishing mechanism (3) for a hollow cup motor (201), comprising a base (1), characterized in that: A drive mechanism (2) is installed inside the base (1). A polishing mechanism (3) and a rotation mechanism (4) are provided above the drive mechanism (2). The polishing mechanism (3) is rotatably connected to the base (1). The rotation mechanism (4) is slidably disposed on the base (1) and is located on one side of the polishing mechanism (3). The self-rotating mechanism (4) includes a driven bevel gear two (401) meshing with the driving mechanism (2). The driven bevel gear two (401) is fixed to the bottom of the rotating shaft (402). A slider (404) is rotatably connected to the outer wall of the rotating shaft (402) near the bottom. The slider (404) is slidably disposed in a sliding hole opened on the base (1). An electric push rod (405) connected to the slider (404) is also installed in the sliding hole. A fixed plate (406) is fixed to the outer wall of the rotating shaft (402). A movable plate (408) is elastically connected to the fixed plate (406) by a spring one (407). The movable plate (408) is sleeved on the rotating shaft (402). A limiting component (409) connected to the movable plate (408) is also provided in the rotating shaft (402).

2. The rotor polishing mechanism (3) of the hollow cup motor (201) according to claim 1, characterized in that: The drive mechanism (2) includes a motor (201) installed inside the base (1). A spline shaft (202) is fixed on the output shaft of the motor (201). A spline sleeve (204) is fixed on the outer wall of the spline shaft (202) near the motor (201) and sleeved on the outer wall of the other end away from the motor (201). A second drive bevel gear (205) that meshes with a second driven bevel gear (401) is fixed on the spline sleeve (204). The spline sleeve (204) is rotatably connected to the bottom of the rotating shaft (402) through a connecting block (403).

3. The rotor polishing mechanism (3) of the hollow cup motor (201) according to claim 2, characterized in that: The polishing mechanism (3) includes a driven bevel gear (301) meshing with the active bevel gear (203). The driven bevel gear (301) is fixed to the bottom of the roller shaft (302). Two roller shafts (303) are provided on one side of the roller shaft (302). Both roller shafts (302) and roller shafts (303) are rotatably connected to the base (1). Polishing belts (304) are wound around the outer walls of roller shafts (302) and roller shafts (303).

4. The rotor polishing mechanism (3) of the hollow cup motor (201) according to claim 1, characterized in that: The limiting assembly (409) includes a connecting rod (4091) movably connected inside the rotating shaft (402). The bottom of the connecting rod (4091) is fixedly connected to the inner wall of the movable disk (408). A top post (4092) is fixedly provided on the top of the connecting rod (4091). At least two limiting blocks (4093) are provided on the outer side of the top post (4092), and both limiting blocks (4093) are slidably connected to the inner side of the top of the rotating shaft (402). A second spring (4094) is provided at the bottom of the limiting block (4093) and is fixedly connected to the inner wall of the rotating shaft (402).

5. The rotor polishing mechanism (3) of the hollow cup motor (201) according to claim 4, characterized in that: The top of the top column (4092) is conical.

6. The rotor polishing mechanism (3) of the hollow cup motor (201) according to claim 1, characterized in that: Two symmetrically arranged pressure rods (5) are also fixed on the base (1), and both pressure rods (5) are located on one side of the self-rotating mechanism (4). The bottom of one end of the pressure rod (5) is provided with a pressing slope.

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