A stator and rotor assembly mechanism with forced concentricity through upper and lower clamping

Abstract

This utility model discloses a stator-rotor assembly mechanism with upper and lower clamping for forced concentricity. It includes a base plate, with a floating plate and a fixed plate sequentially arranged at the upper end of the base plate. Multiple guide shafts are provided between the base plate, the floating plate, and the fixed plate. A pressing mechanism is provided on the end face of the fixed plate, and an upper core servo module is provided on the end face of the floating plate. A lower core servo module is provided at the lower end of the base plate corresponding to the upper core servo module. A motor housing clamping mechanism and a housing and stator positioning mold are provided on the end face of the base plate corresponding to the lower end of the upper core servo module. A rotor positioning and transfer mechanism is also provided on one side of the motor housing clamping mechanism. The beneficial effects of this utility model are: by using upper and lower servo modules in conjunction with upper and lower precision cores, the rotor shaft is precisely constrained in both the radial and axial directions, becoming a straight line from top to bottom. This overcomes the magnetic attraction between the stator and rotor, preventing the rotor from freely swaying in the 360° radial direction, thus avoiding problems such as motor jamming and abnormal noise caused by bearing damage.

Description

Technical Field

[0001] This utility model relates to the technical field of stator and rotor assembly equipment, specifically a stator and rotor assembly mechanism that forces concentricity through upper and lower pressing. Background Technology

[0002] In the brushless motor industry, the overall size of the motor is relatively small, so the stator, rotor, housing, and upper support are also relatively small. However, the magnetic force of the magnets is not small. During the assembly process, due to the mutual attraction between the stator and rotor, radial and axial deviations and misalignments may occur during rotor assembly. In particular, radial runout increases the difficulty of the assembly process. At the same time, radial runout causes the shaft head to be misaligned against the inner ring of the bearing, damaging the bearing balls and causing defects such as jamming or abnormal noise in the motor, which seriously affects production efficiency and yield. Utility Model Content

[0003] The purpose of this invention is to provide a stator and rotor assembly mechanism that forces concentricity through upper and lower clamping, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a stator and rotor assembly mechanism for forced concentricity by upper and lower clamping, comprising a base plate, a floating plate and a fixed plate sequentially arranged at the upper end of the base plate, multiple guide shafts arranged between the base plate, the floating plate and the fixed plate, a pressing mechanism arranged at the end face of the fixed plate, an upper core servo module arranged at the end face of the floating plate, a lower core servo module arranged at the lower end of the base plate corresponding to the upper core servo module, a motor housing clamping mechanism and a housing and stator positioning mold arranged at the lower end of the base plate, and a rotor positioning and transfer mechanism arranged on one side of the motor housing clamping mechanism.

[0005] In a further optimized version, the pressing mechanism includes a first servo electric cylinder, the extension end of which is connected to the floating plate.

[0006] In a further optimization, each of the multiple guide shafts is provided with a guide shaft support at its lower end.

[0007] In a further optimized configuration, the upper core servo module includes a first servo module fixing plate fixedly disposed with the floating plate. A second servo electric cylinder is provided on one side of the first servo module fixing plate. A first moving block is provided on the second servo electric cylinder and connected thereto. An upper core is provided at one end of the first moving block.

[0008] In a further optimized configuration, the lower core servo module includes a second servo module fixing plate fixedly mounted to the base plate. A third servo electric cylinder is provided on one side of the second servo module fixing plate. A second moving block is provided on the third servo electric cylinder and connected thereto. A lower core is provided at one end of the second moving block.

[0009] In a further optimized version, the motor housing clamping mechanism consists of pneumatic fingers and a gripper at one end.

[0010] In a further optimized version, the rotor positioning and transplanting mechanism consists of a slide cylinder and a rotor positioning mechanism at one end.

[0011] In a further optimized version, one end of the rotor positioning mechanism is trapezoidal, and a groove is provided at the end of the trapezoidal structure closest to the housing and the stator positioning mold, and the rotor is placed in the groove.

[0012] In a further optimized configuration, the lower end of the floating plate is provided with an upper support positioning mold mechanism fixed thereto. The upper support positioning mold mechanism includes an upper support positioning mold. The lower end of the upper support positioning mold near the housing and stator positioning mold is provided with a fixing groove for fixing the upper support. The upper support and the upper bearing are fixed in sequence in the fixing groove.

[0013] In a further optimized configuration, the upper end of the housing and stator positioning mold is fixed with a housing and stator including a lower bearing.

[0014] Beneficial effects

[0015] The stator and rotor assembly mechanism with upper and lower clamping forced concentricity provided by this utility model adopts upper and lower servo modules in conjunction with upper and lower precision top cores to precisely constrain the rotor shaft in the radial and axial directions, making it a straight line from top to bottom. This overcomes the problem of the rotor freely swinging in the 360° radial direction due to the magnetic attraction between the stator and rotor, which can cause bearing damage and lead to motor jamming, abnormal noise, and other defects. It has many advantages such as high stability, fast cycle time, and low defect rate, and solves many problems in the industry such as difficult assembly and high defect rate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall frame structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the upper core servo module structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the lower core servo module structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the motor housing clamping mechanism of this utility model;

[0021] Figure 6 This is a schematic diagram of the upper support positioning mold mechanism of this utility model;

[0022] Figure 7 This is a schematic diagram of the rotor positioning and transplanting mechanism of this utility model. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] Example

[0025] like Figure 1-7 As shown, a stator and rotor assembly mechanism for forced concentricity by upper and lower pressing includes a base plate 8. A floating plate 9 is sequentially arranged on the upper end of the base plate 8 and a fixed plate 10. Multiple guide shafts 12 are arranged between the base plate 8, the floating plate 9, and the fixed plate 10. A pressing mechanism 1 is provided on the end face of the fixed plate 10. An upper core servo module 2 is provided on the end face of the floating plate 9. A lower core servo module 6 is provided on the lower end of the base plate 8 corresponding to the upper core servo module 2. A motor housing clamping mechanism 4 and a housing and stator positioning mold 5 are provided on the end face of the base plate 8 at the lower end of the upper core servo module 2. A rotor positioning and transfer mechanism 7 is also provided on one side of the motor housing clamping mechanism 4.

[0026] In this embodiment, the pressing mechanism 1 includes a first servo cylinder 11, the telescopic end of which is connected to the floating plate 9. Multiple guide shafts 12 are each provided with a guide shaft support 13 at their lower ends. The upper core servo module 2 includes a first servo module fixing plate 16 fixedly mounted to the floating plate 9. A second servo cylinder 14 is provided on one side of the first servo module fixing plate 16, and a first moving block 15 connected to the second servo cylinder 14 is provided on it. An upper core 17 is provided at one end of the first moving block 15.

[0027] The lower core servo module 6 includes a second servo module fixing plate 18 fixedly mounted to the base plate 8. A third servo electric cylinder 19 is provided on one side of the second servo module fixing plate 18. A second moving block 20 is provided on the third servo electric cylinder 19 and connected thereto. A lower core 21 is provided at one end of the second moving block 20. The motor housing clamping mechanism 4 is composed of pneumatic fingers 27 and a gripper 28 provided at one end.

[0028] The rotor positioning and transplanting mechanism 7 consists of a slide cylinder 22 and a rotor positioning mechanism 23 at one end. One end of the rotor positioning mechanism 23 has a trapezoidal structure, and a groove 24 is provided at the end of the trapezoidal structure that is close to the housing and the stator positioning mold 5. The rotor is placed in the groove 24.

[0029] The lower end of the floating plate 9 is provided with an upper support positioning mold mechanism 3, which is fixedly installed therewith. The upper support positioning mold mechanism 3 includes an upper support positioning mold 25. The lower end of the upper support positioning mold 25 near the housing and stator positioning mold 5 is provided with a fixing groove 26 for fixing the upper support. The upper support and the upper bearing are fixed in sequence in the fixing groove 26. The upper end of the housing and stator positioning mold 5 is fixed with a housing and stator including the lower bearing.

[0030] When the equipment is in the reset state, the operator manually places the rotor on the rotor positioning mechanism, places the upper bracket into the upper bracket positioning mold, and places the housing after assembling the bearings and stator onto the housing and stator positioning mold. The equipment is then started. The upper core in the upper core servo module passes through the upper bearing and presses against the upper shaft head of the rotor. The motor housing clamping mechanism clamps the housing. The lower core in the lower core servo module passes through the lower bearing inside the housing. The upper core servo module pushes the upper core downward, and the lower core servo module pushes the lower core upward to the set position, clamping the upper and lower shaft heads of the rotating shaft, so that the rotating shaft is precisely constrained in the radial and axial directions. The first servo electric cylinder connects to the floating plate and moves downward to the set position, and the equipment mechanism automatically resets.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A stator and rotor assembly mechanism forcibly concentrically pressing from above and below, characterized in that: Includes a base plate (8), on which a floating plate (9) is sequentially arranged on the upper end of the base plate (8) and a fixed plate (10). Multiple guide shafts (12) are arranged between the base plate (8), the floating plate (9), and the fixed plate (10). A pressing mechanism (1) is provided on the end face of the fixed plate (10). An upper core servo module (2) is provided on the end face of the floating plate (9). A lower core servo module (6) is provided on the lower end of the base plate (8) corresponding to the upper core servo module (2). A motor housing clamping mechanism (4) and a housing and stator positioning mold (5) are provided on the end face of the base plate (8) corresponding to the lower end of the upper core servo module (2). A rotor positioning and transfer mechanism (7) is also provided on one side of the motor housing clamping mechanism (4).

2. The upper and lower compression forced concentricity of the stator and rotor assembly mechanism according to claim 1, characterized in that: The pressing mechanism (1) includes a first servo electric cylinder (11), the extension end of which is connected to the floating plate (9).

3. The upper and lower compression forced concentricity of the stator and rotor assembly mechanism according to claim 1, characterized in that: Each of the guide shafts (12) is provided with a guide shaft support (13) at its lower end.

4. The upper and lower compression forced concentricity of the stator and rotor assembly mechanism according to claim 1, characterized in that: The upper core servo module (2) includes a first servo module fixing plate (16) fixedly disposed with the floating plate (9). A second servo electric cylinder (14) is provided on one side of the first servo module fixing plate (16). A first moving block (15) is provided on the second servo electric cylinder (14) and connected thereto. An upper core (17) is provided at one end of the first moving block (15).

5. The upper and lower compression forced concentric stator-rotor assembly mechanism according to claim 1, wherein: The lower core servo module (6) includes a second servo module fixing plate (18) fixedly disposed with the base plate (8). A third servo electric cylinder (19) is provided on one side of the second servo module fixing plate (18). A second moving block (20) is provided on the third servo electric cylinder (19) and connected thereto. A lower core (21) is provided at one end of the second moving block (20).

6. The stator and rotor assembly mechanism for forced concentricity by upper and lower clamping as described in claim 1, characterized in that: The motor housing clamping mechanism (4) consists of a pneumatic finger (27) and a gripper (28) at one end.

7. The upper and lower compression forced concentric stator-rotor assembly mechanism of claim 1, wherein: The rotor positioning and transplanting mechanism (7) consists of a slide cylinder (22) and a rotor positioning mechanism (23) at one end.

8. The upper and lower compression forced concentric stator-rotor assembly mechanism according to claim 7, characterized in that: The rotor positioning mechanism (23) has a trapezoidal structure at one end, and a groove (24) is provided at the end of the trapezoidal structure that is close to the housing and the stator positioning mold (5), and the rotor is placed in the groove (24).

9. The upper and lower compression forced concentric stator-rotor assembly mechanism of claim 1, wherein: The floating plate (9) is provided with an upper bracket positioning mold mechanism (3) fixedly installed at its lower end. The upper bracket positioning mold mechanism (3) includes an upper bracket positioning mold (25). The upper bracket positioning mold (25) has a fixing groove (26) for fixing the upper bracket at its lower end near the housing and stator positioning mold (5). The upper bracket and the upper bearing are fixed in sequence in the fixing groove (26).

10. The upper and lower compression forced concentric stator-rotor assembly mechanism of claim 1, wherein: The upper end of the housing and stator positioning mold (5) is fixed with a housing and stator including a lower bearing.

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