Motor stator press-fitting bearing device

Abstract

The invention provides a motor stator bearing press-fitting device which is applied to press-fitting of a motor stator, a first bearing and a second bearing, the motor stator is provided with a first shaft part and a second shaft part, and the motor stator bearing press-fitting device comprises a bearing feeding mechanism, a stator feeding mechanism and a press-fitting mechanism; the bearing feeding mechanism and the motor stator feeding mechanism are both arranged on the side portion of the press-fitting mechanism, the bearing feeding mechanism is used for conveying bearings to the press-fitting mechanism, and the motor stator feeding mechanism is used for conveying motor stators to the feeding mechanism; the press-fitting mechanism comprises a supporting table, a bearing base, a guide column, a lifting driving assembly, a downward pressing base and a downward pressing driving assembly. Compared with the prior art, the motor stator bearing press-fitting device can achieve press-fitting of two bearings at the same time, positioning is accurate, the press-fitting success rate is high, the structural design is ingenious, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor processing, and in particular to a motor stator press-fit bearing device. Background Art

[0002] An electric motor, commonly known as a motor, is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its primary function is to generate driving torque, serving as a power source for electrical appliances and various machines. An electric motor consists of two basic parts: the stator (stationary part) and the rotor (rotating part). The stator is the stationary part of the motor, whose primary function is to generate a rotating magnetic field. Therefore, it requires magnets. The rotor is a rotating body supported by bearings, which are also mounted within the stator.

[0003] Currently, only one bearing can be pressed into the stator at a time. If there are rotor shafts at both ends of the stator, it is necessary to press-fit one bearing, flip the stator over, load the bearing, and finally press-fit the second bearing. It is impossible to press-fit two bearings at the same time, resulting in relatively low production efficiency. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and to provide a motor stator press-fit bearing device.

[0005] One embodiment of the present invention provides a motor stator press-fit bearing device, which is used for press-fitting a motor stator, a first bearing, and a second bearing. The motor stator has a first shaft portion and a second shaft portion, and includes: a bearing feeding mechanism, a stator feeding mechanism, and a press-fit mechanism;

[0006] The bearing feeding mechanism and the motor stator feeding mechanism are both arranged on the side of the press-fitting mechanism, the bearing feeding mechanism is used to convey the bearing to the press-fitting mechanism, and the motor stator feeding mechanism is used to convey the motor stator to the feeding mechanism;

[0007] The press-fitting mechanism includes a support platform, a bearing base, a guide column, a lifting drive assembly, a lower press seat and a lower press drive assembly, the bearing base is installed on the support platform, a guide channel is provided in the bearing base, a bearing support portion is provided in the guide channel, the guide column is liftably arranged in the guide channel, the bearing support portion is arranged around the guide column, the lifting drive assembly is drive-connected to the guide column, the lower press seat is liftably arranged above the bearing base, and the lower press drive assembly is drive-connected to the lower press seat;

[0008] In which, the guide column is provided with a lifting channel, a stator support part, an elastic member and multiple stator positioning parts, the top of the lifting channel is formed with an opening, the stator support part is movably matched with the lifting channel and extends from the opening, the diameter of the stator support part is not larger than the diameter of the guide column, the diameter of the stator support part and the diameter of the guide column are both smaller than the diameter of the first shaft part, the first elastic member is arranged in the lifting channel and is respectively connected to the guide column and the stator support part, the stator positioning member is movably arranged in the lifting channel and extends from the opening, the stator support part is transmission-matched with the stator positioning part, the part of the stator positioning member extending out of the opening gradually extends in the radial direction in the upward direction, and a limiting space is formed between the multiple stator positioning members, and the diameter of the limiting space is larger than the diameter of the first shaft part.

[0009] In some optional embodiments, the bearing loading mechanism includes a bearing vibration plate, a bearing conveying channel, a bearing clamp and a bearing multi-axis translation drive assembly; the bearing vibration plate is connected to the bearing conveying channel, and the bearing multi-axis translation drive assembly drives the bearing clamp to move back and forth between the bearing conveying channel and the bearing base.

[0010] In some optional embodiments, the bearing feeding mechanism includes a horizontal rotation drive assembly and two bearing fixtures, the bearing multi-axis translation drive assembly is drivingly connected to the horizontal rotation drive assembly, the horizontal rotation drive assembly is drivingly connected to the two bearing fixtures, and the bearing multi-axis translation drive assembly drives the bearing fixtures to move by driving the horizontal rotation drive assembly to move;

[0011] A blanking station is arranged on one side of the pressing mechanism. When the bearing multi-axis translation drive assembly drives the horizontal rotation drive assembly to move between the blanking station and the pressing mechanism, the horizontal rotation drive assembly can drive the two bearing fixtures so that one of the bearing fixtures moves to the bearing base and the other bearing fixture moves to the blanking station.

[0012] In some optional embodiments, the stator feeding mechanism includes a stator vibration plate, a stator conveying channel, a stator clamp, a stator flip drive assembly and a stator multi-axis translation drive assembly;

[0013] The stator vibration plate is connected to the stator conveying channel, the stator multi-axis translation drive assembly is driven and connected to the stator flip drive assembly, the stator flip drive assembly is driven and connected to the stator clamp, the stator clamp moves back and forth between the stator conveying channel and the bearing base under the drive of the stator multi-axis translation drive assembly, and the stator clamp swings up and down under the drive of the stator flip drive assembly.

[0014] In some optional embodiments, when the motor stator press-fitting bearing device performs the feeding step, the bearing feeding mechanism puts the first bearing into the guide channel, the first bearing abuts against the bearing support part, the guide column is arranged in the inner ring of the first bearing and is in clearance fit with the inner ring of the first bearing, then the stator feeding mechanism puts the motor stator into the guide channel with the first shaft part downward and the second shaft part upward, the first shaft part extends into the limiting space and abuts against the stator support part, then the bearing feeding mechanism puts the first bearing into the guide channel, the inner ring of the second bearing abuts against the second shaft part.

[0015] When the motor stator press-fitting bearing device performs the press-fitting step, the lower pressing seat is driven by the lower pressing driving assembly to descend and abut against the second bearing, the second bearing and the motor stator are lowered together, the motor stator drives the stator support part to descend, when the stator support part descends, the stator positioning part is driven to descend and move towards the axis direction of the guide column, until the outermost side of the stator positioning part is at a distance less than the diameter of the inner ring of the first bearing from the axis of the guide column, at this time, the elastic member is elastically deformed, then in the process of descending of the lower pressing seat, the lifting driving assembly drives the guide column to synchronously descend to a preset position, so that the guide column avoids the first shaft part to enter the inner ring of the first bearing.

[0016] In some optional embodiments, a plurality of guide rails are arranged in the lifting channel, the guide rails gradually extend towards the radial direction of the guide column in the upward direction, and the stator positioning part is in sliding fit with the guide rails.

[0017] In some optional embodiments, in the upward direction, the guide rails extend in a spiral direction around the axis of the guide column or extend in a straight line direction.

[0018] In some optional embodiments, a chamfer is formed at the edge of the first shaft part, and the stator positioning part can move along the chamfer when the stator positioning part descends.

[0019] In some optional embodiments, the bottom of the lower pressing seat is formed with an abutting part, the bottom of the abutting part is provided with an annular inner ring guide part, and the outer diameter of the inner ring guide part gradually decreases in the downward direction.

[0020] Compared with the prior art, the motor stator press-fitting bearing device can simultaneously realize press-fitting of two bearings, has high positioning accuracy and press-fitting success rate, has a clever structure design, and effectively improves the production efficiency.

[0021] In order to more clearly understand the present invention, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a motor stator press-fit bearing device according to one embodiment of the present invention;

[0023] Figure 2 A schematic structural diagram of a press-fitting mechanism according to an embodiment of the present invention;

[0024] Figure 3 An exploded view of a partial structure of a motor stator, a first bearing, a second bearing, and a press-fitting mechanism in a cross-sectional state according to an embodiment of the present invention;

[0025] Figure 4 A cross-sectional view of a portion of the structure of a motor stator, a first bearing, a second bearing, and a press-fitting mechanism according to an embodiment of the present invention;

[0026] Figure 5 for Figure 4 An enlarged view of point A is shown;

[0027] Figure 6 This is a structural diagram of a partial structure of a lower press seat according to an embodiment of the present invention;

[0028] Figure 7 This is a structural schematic diagram of a bearing loader according to an embodiment of the present invention;

[0029] Figure 8 This is a structural schematic diagram of a bearing loader according to an embodiment of the present invention;

[0030] Figure 9 The figure is a schematic structural diagram of a stator loader according to an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 10. Bearing feeding mechanism; 11. Bearing vibrating plate; 12. Bearing conveying channel; 13. Bearing fixture; 14. Bearing multi-axis translation drive assembly; 15. Horizontal rotation drive assembly; 20. Stator feeding mechanism; 21. Stator vibrating plate; 22. Stator conveying channel; 23. Stator fixture; 24. Stator flip drive assembly; 25. Stator multi-axis translation drive assembly; 30. Press-fit mechanism; 31. Support platform; 32. Bearing base; 321. Guide channel; 322. Bearing Support part; 33. Guide column; 331. Lifting channel; 332. Stator support part; 333. Elastic member; 334. Stator positioning part; 335. Lifting drive assembly; 336. Guide rail; 337. Positioning part; 34. Pressing seat; 341. Pressing part; 342. Inner ring guide; 35. Pressing drive assembly; 40. Motor stator; 41. First shaft; 42. Second shaft; 43. Chamfer; 51. First bearing; 52. Second bearing; 60. Unloading station. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In the description of the present invention, unless otherwise specified, "multiple" means 2 or more, and "several" means 1 or more. In addition, unless otherwise specified, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0036] In the description of the present invention, reference to terms such as "one embodiment," "some optional embodiments," or "some optional embodiments" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0037] See also Figures 1 to 5 One embodiment of the present invention provides a motor stator press-fit bearing device, which is used for press-fitting a motor stator 40, a first bearing 51 and a second bearing 52. The motor stator 40 has a first shaft portion 41 and a second shaft portion 42, including: a bearing feeding mechanism 10, a stator feeding mechanism 20 and a press-fitting mechanism 30;

[0038] The bearing feeding mechanism 10 and the motor stator 40 feeding mechanism 20 are both arranged on the side of the press-fitting mechanism 30. The bearing feeding mechanism 10 is used to convey the bearing to the press-fitting mechanism 30, and the motor stator 40 feeding mechanism 20 is used to convey the motor stator 40 to the feeding mechanism;

[0039] The press-fitting mechanism 30 includes a support platform 31, a bearing base 32, a guide column 33, a lifting drive assembly 335, a lower press seat 34 and a lower press drive assembly 35. The bearing base 32 is mounted on the support platform 31. A guide channel 321 is provided in the bearing base 32. A bearing support portion 322 is provided in the guide channel 321. The guide column 33 is liftably disposed in the guide channel 321. The bearing support portion 322 is arranged around the guide column 33. The lifting drive assembly 335 is drivably connected to the guide column 33. The lower press seat 34 is liftably disposed above the bearing base 32. The lower press drive assembly 35 is drivably connected to the lower press seat 34.

[0040] The guide column 33 is provided with a lifting channel 331, a stator support part 332, an elastic part 333 and a plurality of stator positioning parts 334, the top of the lifting channel 331 is formed with an opening, the stator support part 332 is movably matched with the lifting channel 331 and extends out of the opening, the diameter of the stator support part 332 is not greater than the diameter of the guide column 33, the diameter of the stator support part 332 and the diameter of the guide column 33 are both smaller than the diameter of the first shaft part 41, the first elastic part 333 is arranged in the lifting channel 331 and connected with the guide column 33 and the stator support part 332 respectively, the stator positioning part is movably arranged in the lifting channel 331 and extends out of the opening, the stator support part 332 is drivingly matched with the stator positioning part 334, the part of the stator positioning part extending out of the opening gradually extends in the radial direction in the upward direction, the plurality of stator positioning parts form a limiting space, and the diameter of the limiting space is greater than the diameter of the first shaft part 41.

[0041] The working principle of the motor stator press-fitting bearing device in one embodiment of the application is described below:

[0042] When the motor stator press-fitting bearing device performs the feeding step:

[0043] The bearing feeding mechanism 10 puts the first bearing 51 into the guide channel 321, the first bearing 51 abuts against the bearing support part 322, the guide column 33 is arranged in the inner ring of the first bearing 51 and is matched with the inner ring of the first bearing 51 in clearance, at this time, the inner ring of the first bearing 51 is stably positioned due to the clearance matching with the guide column 33, and at this time, the top of the guide column 33 is higher than the first bearing 51, and the limiting space, the stator positioning part 334 and the stator support part 332 are also higher than the first bearing 51. Then the stator feeding mechanism 20 puts the motor stator 40 into the guide channel 321 with the first shaft part 41 downward and the second shaft part 42 upward, the first shaft part 41 extends into the limiting space and abuts against the stator support part 332, the stator positioning part 334 positions the first shaft part 41, so that the first shaft part 41 is aligned with the inner ring of the first bearing 51, and the inner diameter of the guide channel 321 and the maximum outer diameter of the motor stator 40 are matched, so that the motor stator 40 is actually limited by the stator positioning part 334 and the inner wall of the guide channel 321 at this time, and since the first shaft part 41 and the maximum outer diameter of the motor stator 40 are at different heights, based on the principle that two points determine a straight line, the motor stator 40 is stably positioned and cannot shake left and right. Then the bearing feeding mechanism 10 puts the first bearing 51 into the guide channel 321, so that the inner ring of the second bearing 52 abuts against the second shaft part 42.

[0044] When the motor stator press-fitting bearing device performs the press-fitting step:

[0045] The lower pressure seat 34 is driven by the downward pressure driving assembly 35 to descend and press against the second bearing 52. The second bearing 52 and the motor stator 40 are lowered together. Due to the buffering effect of the first elastic member 333 and the second elastic member 333, the second shaft portion 42 has not yet been pressed into the inner ring of the second bearing 52; the motor stator 40 drives the stator support portion 332 to descend. When the stator support portion 332 descends, it drives the stator positioning portion 334 to descend and move toward the axial direction close to the guide column 33 until the straight-line distance between the outermost side of the stator positioning portion 334 and the axis of the guide column 33 is less than the diameter of the inner ring of the first bearing 51. At this time, the elastic member 333 produces elastic deformation, and the purpose of the stator support portion 332 driving the stator positioning portion 334 to move is to retract the stator positioning portion 334, thereby avoiding the situation where the guide column 33 cannot descend when interfering with the inner ring of the first bearing 51 when it descends.

[0046] Subsequently, during the descent of the lower pressure seat 34, the lifting drive assembly 335 drives the guide column 33 to synchronously descend to a preset position, so that the guide column 33 avoids the first shaft portion 41 from entering the inner ring of the first bearing 51. During this process, the first shaft portion 41 gradually enters the inner ring of the first bearing 51, and the second shaft portion 42 enters the inner ring of the second bearing 52. Of course, due to tolerance issues, based on the difference in the pressure required for the first shaft portion 41 to be pressed into the inner ring of the first bearing 51 and the pressure required for the second shaft portion 42 to be pressed into the inner ring of the second bearing 52, if the pressure required for the first shaft portion 41 to be pressed into the inner ring of the first bearing 51 is greater than the pressure required for the second shaft portion 42 to be pressed into the inner ring of the second bearing 52, then the second shaft portion 42 will be pressed into the inner ring of the second bearing 52 first, and then the first shaft portion 41 will be pressed into the inner ring of the first bearing 51. In actual operation, due to the limitations of the bearing support portion 322 and the guide column 33, the positional relationship between the first shaft portion 41 and the inner ring of the first bearing 51 after press-fitting is completed is fixed, and therefore the positional relationship between the second shaft portion 42 and the inner ring of the second bearing 52 after press-fitting is completed is also fixed. Therefore, whether the first shaft portion 41 is pressed into the inner ring of the first bearing 51 first or later does not affect the final press-fitting effect.

[0047] After press-fitting is complete, the guide post 33 rises again, pushing the press-fitted workpiece out of the guide channel 321. The press-fitted workpiece can then be removed, and the elastic force of the elastic member 333 resets the stator support member and the stator positioning member. In this embodiment, the stator positioning member rises as the stator support member rises. Therefore, the elastic force of the elastic member 333 causes the stator positioning member to rise as the stator support member rises.

[0048] It should be noted that since the outer diameter of the first shaft portion 41 is slightly larger than the inner ring of the first bearing 51, the diameter of the limiting space needs to be larger than the diameter of the first shaft portion 41, and the stator positioning member needs to extend to the side of the guide column 33, so as to meet the positioning of the first shaft portion 41, but this will cause the guide column 33 to be unable to descend through the inner ring of the first shaft portion 41. Therefore, the stator positioning member adopts a retractable design, thereby avoiding affecting the process of press fitting, and in the press fitting step, the motor stator 40 is tightly pressed by the pressure of the lower pressing seat 34 during the retraction of the stator positioning member, so that the motor stator 40 is not easy to shift relative to the inner ring of the first bearing 51, and the motor stator 40 will not be offset again, and can accurately enter the inner ring of the first shaft portion 41.

[0049] The specific structure of the lifting driving assembly 335 and the pressing driving assembly 35 can be selected according to actual needs, for example, the lifting driving assembly 335 and the pressing driving assembly 35 can adopt a pneumatic cylinder, an electric cylinder or a hydraulic cylinder, etc., which are not limited to this example.

[0050] In some optional embodiments, a plurality of guide rails 336 are arranged in the lifting channel 331, and the guide rails 336 gradually extend in the radial direction in the upward direction. The stator positioning member is in sliding fit with the guide rails 336, thereby improving the stability of the movement of the stator positioning member.

[0051] In some optional embodiments, in the upward direction, the guide rails 336 extend in a spiral direction around the axis of the guide column 33 or extend in a straight line. In this embodiment, the guide rails 336 extend in a straight line in the upward direction, and the part of the stator positioning member in sliding fit with the guide rails 336 is in a strip shape. Of course, the guide rails 336 can also extend spirally.

[0052] In some optional embodiments, a chamfer 43 is formed at the edge of the first shaft portion 41, and the stator positioning member can move along the chamfer 43 when the stator positioning member descends. An inclined positioning portion 337 is designed on the stator positioning member, and after the first shaft portion 41 enters the guide channel 321 and descends, the first shaft portion 41 can be guided to the middle position of the limiting space by the inclined positioning portion 337 to align with the inner ring of the first bearing 51. In this embodiment, since the edges of the first shaft portion 41 and the second shaft portion 42 are both formed with chamfers 43, it is convenient to guide into the inner ring of the bearing.

[0053] Please refer to Figure 6In some optional embodiments, a pressing portion 341 is formed at the bottom of the lower pressure seat 34, and the pressing portion 341 can extend into the guide channel 321. An annular inner ring guide portion 342 is provided at the bottom of the pressing portion 341, and the outer diameter of the inner ring guide portion 342 gradually decreases in the downward direction. Since the outer diameter of the second bearing 52 is usually smaller than the maximum outer diameter of the motor stator 40, the guide channel 321 cannot accurately position the second bearing 52. During the pressing step, when the lower pressure seat 34 approaches the second bearing 52, it extends into the second bearing 52 through the annular inner ring guide portion 342, thereby guiding the inner ring of the second bearing 52 to a position accurately aligned with the second shaft portion 42 through the inner ring guide portion 342.

[0054] In some optional embodiments, the elastic member 333 is a spring, and the elastic member 333 is respectively connected to the stator support member and the guide post 33. Of course, the stator positioning member can also be reset independently by other suitable elastic structures, rather than relying on the elastic force of the elastic member 333 to achieve reset. For example, the elastic structure can be respectively connected to the two stator positioning members, and when the stator positioning member descends, it moves toward the axis of the guide post 33, so that the two stator positioning members will squeeze the elastic structure. Alternatively, the elastic structure can be respectively connected to the stator positioning member and the guide post 33, and when the stator positioning member descends, it will squeeze the elastic structure.

[0055] See also Figures 7 to 8 In some optional embodiments, the bearing feeding mechanism 10 includes a bearing vibration plate 11, a bearing conveying channel 12, a bearing clamp 13 and a bearing multi-axis translation drive assembly 14; the bearing vibration plate 11 is connected to the bearing conveying channel 12, and the bearing multi-axis translation drive assembly 14 drives the bearing clamp 13 to move back and forth between the bearing conveying channel 12 and the bearing base 32. The bearing vibration plate 11 vibrates to transport the placed bearings one by one to the bearing conveying channel 12. The bearing conveying channel 12 guides and conveys the bearings one by one to the appropriate position. Then the bearing clamp 13 clamps the bearing. The bearing multi-axis translation drive assembly 14 drives the bearing clamp 13 to move to the bearing base 32. Then the bearing clamp 13 lowers the first bearing 51 and aligns the guide column 33 with the inner ring of the bearing. The first bearing 51 can automatically fall along the guide column 33 in the guide channel 321 to the bearing support portion 322 by gravity. When the second bearing 52 is placed, the second shaft portion 42 is still a certain distance away from the guide channel 321, thereby reserving space for placing the second bearing 52. When the second bearing 52 is placed into the guide channel 321 by the bearing clamp 13, it can roughly fall on the second shaft portion 42.

[0056] In some optional embodiments, the bearing loading mechanism 10 includes a horizontal rotation drive assembly 15 and two bearing fixtures 13, the bearing multi-axis translation drive assembly 14 is driven and connected to the horizontal rotation drive assembly 15, the horizontal rotation drive assembly 15 is driven and connected to the two bearing fixtures 13, and the bearing multi-axis translation drive assembly 14 drives the bearing fixture 13 to move by driving the horizontal rotation drive assembly 15; a blanking station 60 is arranged on one side of the pressing mechanism 30, and when the bearing multi-axis translation drive assembly 14 drives the horizontal rotation drive assembly 15 to move between the blanking station 60 and the pressing mechanism 30, the horizontal rotation drive assembly 15 can drive the two bearing fixtures 13 so that one of the bearing fixtures 13 moves to the bearing base 32, and the other bearing fixture 13 moves to the blanking station 60. By arranging two bearing fixtures 13, the loading of the first bearing 51 and the unloading of the workpiece after the pressing is completed can be achieved synchronously. The two bearing fixtures 13 are symmetrically distributed relative to the rotation axis of the horizontal rotation drive assembly 15. After the pressing is completed, after one of the bearing fixtures 13 clamps the first bearing 51, the bearing multi-axis translation drive assembly 14 drives the horizontal rotation drive assembly 15 to move between the pressing mechanism 30 and the unloading station 60, and the horizontal rotation drive assembly 15 drives the other idle bearing fixture 13 to rotate to the bearing base 32. The idle bearing fixture 13 clamps the pressed workpiece, and then the horizontal rotation drive assembly 15 drives the two bearing fixtures 13 to rotate. The bearing fixture 13 clamping the pressed workpiece is rotated to the unloading station 60, which facilitates unloading, and the bearing fixture 13 clamping the first bearing 51 is rotated to the bearing base 32, which facilitates loading of the first bearing 51. Since synchronous loading and unloading can be achieved, the moving path of the bearing fixture 13 is shortened, which is conducive to speeding up production efficiency.

[0057] See also Figure 9In some optional embodiments, the stator feeding mechanism 20 includes a stator vibration plate 21, a stator conveying channel 22, a stator clamp 23, a stator flip drive assembly 24 and a stator multi-axis translation drive assembly 25; the stator vibration plate 21 is connected to the stator conveying channel 22, the stator multi-axis translation drive assembly 25 is driven and connected to the stator flip drive assembly 24, the stator flip drive assembly 24 is driven and connected to the stator clamp 23, the stator clamp 23 moves back and forth between the stator conveying channel 22 and the bearing base 32 under the drive of the stator multi-axis translation drive assembly 25, and the stator clamp 23 swings up and down under the drive of the stator flip drive assembly 24. The stator vibration disk 21 transports the stators one by one to the stator conveying channel 22. Due to the influence of the shape of the motor stator 40 and the gravity distribution, the motor stator 40 is placed horizontally on the stator conveying channel 22, that is, the axes of the first shaft portion 41 and the second shaft portion 42 are parallel to the horizontal plane. After the stator clamp 23 clamps the motor stator 40, the stator flipping drive assembly 24 flips the motor stator 40 to a vertical orientation. The downward shaft portion is preset as the first shaft portion 41, and the downward shaft portion is preset as the second shaft portion 42 facing upward. It should be noted that the first shaft portion 41 and the second shaft portion 42 are symmetrically distributed and have the same shape. No matter what posture the motor stator 40 is flipped from to the vertical orientation, the downward shaft portion of the motor stator 40 is preset as the first shaft portion 41 and the second shaft portion 42. Of course, in some other embodiments, if the two shaft portions of the motor stator 40 have different shapes, it is necessary to determine the positions of the first shaft portion 41 and the second shaft portion 42 of the motor stator 40 through manual identification or camera image recognition, and then flip the motor stator 40 accordingly through the stator flip drive assembly 24.

[0058] The bearing multi-axis translation drive assembly 14 can drive the bearing to achieve horizontal movement and lifting. The specific structure of the bearing multi-axis translation drive assembly 14 can be designed according to actual needs. For example, the bearing multi-axis translation drive assembly 14 includes a horizontal movement cylinder and a lifting drive cylinder. The horizontal movement cylinder is driven and connected to the lifting drive cylinder, and the lifting drive cylinder is driven and connected to the bearing flip drive assembly. This example is not limited to this. In this embodiment, the bearing multi-axis translation drive assembly 14 includes a linear motor translation drive module and a cylinder lifting drive module. The linear motor translation drive module is connected to the horizontal rotation drive assembly 15, and the horizontal rotation drive assembly 15 is driven and connected to the cylinder lifting drive module, and the cylinder lifting drive module is driven and connected to the bearing fixture 13. The multi-axis translation drive assembly is actually a relatively common component. Its structure and distance are well known to those skilled in the art and will not be described in detail here.

[0059] The stator multi-axis translation drive assembly 25 can drive the stator to achieve horizontal movement and elevation. The specific structure of the stator multi-axis translation drive assembly 25 can be designed according to actual needs. For example, the stator multi-axis translation drive assembly 25 includes a horizontal movement cylinder and a lift drive cylinder, the horizontal movement cylinder is drivingly connected to the lift drive cylinder, and the lift drive cylinder is drivingly connected to the stator tilting drive assembly 24, without limitation. The multi-axis translation drive assembly is actually a relatively common component, and its structure and distance are well known to those skilled in the art and will not be further described here.

[0060] The specific structures of the bearing vibration plate 11 and the stator vibration plate 21 can be designed according to actual needs. The structures and principles thereof are well known to those skilled in the art and will not be described in detail here.

[0061] The specific structures of the stator clamp 23 and the bearing clamp 13 can be designed according to actual needs, such as using a clamping cylinder, a finger cylinder, etc. The structure and principle of the clamp are well known to those skilled in the art and will not be described in detail here.

[0062] The specific structures of the stator flip drive assembly 24 and the horizontal rotation drive assembly 15 can be designed according to actual needs. For example, the stator flip drive assembly 24 or the horizontal rotation drive assembly 15 can adopt a rotary cylinder, a rotary drive motor, etc.

[0063] In addition, in this embodiment, a plurality of buffer springs can be provided between the support platform 31 and the bearing base 32. When the lower pressing seat 34 descends to abut the bearing base 32, the buffer springs can provide a certain amount of cushioning to prevent the lower pressing seat 34 from hitting the bearing base 32. The lifting drive assembly 335 can be installed on the bearing base 32.

[0064] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A motor stator press-fit bearing device, used for press-fitting a motor stator, a first bearing, and a second bearing, wherein the motor stator has a first shaft portion and a second shaft portion, and is characterized in that: include: Bearing feeding mechanism, stator feeding mechanism and press-fitting mechanism; The bearing feeding mechanism and the motor stator feeding mechanism are both arranged on the side of the press-fitting mechanism, the bearing feeding mechanism is used to convey the bearing to the press-fitting mechanism, and the motor stator feeding mechanism is used to convey the motor stator to the feeding mechanism; The press-fitting mechanism includes a support platform, a bearing base, a guide column, a lifting drive assembly, a lower press seat and a lower press drive assembly, the bearing base is installed on the support platform, a guide channel is provided in the bearing base, a bearing support portion is provided in the guide channel, the guide column is liftably arranged in the guide channel, the bearing support portion is arranged around the guide column, the lifting drive assembly is drive-connected to the guide column, the lower press seat is liftably arranged above the bearing base, and the lower press drive assembly is drive-connected to the lower press seat; In which, the guide column is provided with a lifting channel, a stator support part, an elastic member and multiple stator positioning parts, the top of the lifting channel is formed with an opening, the stator support part is movably matched with the lifting channel and extends from the opening, the diameter of the stator support part is not larger than the diameter of the guide column, the diameter of the stator support part and the diameter of the guide column are both smaller than the diameter of the first shaft part, the first elastic member is arranged in the lifting channel and is respectively connected to the guide column and the stator support part, the stator positioning member is movably arranged in the lifting channel and extends from the opening, the stator support part is transmission-matched with the stator positioning part, the part of the stator positioning member extending out of the opening gradually extends in the radial direction in the upward direction, and a limiting space is formed between the multiple stator positioning members, and the diameter of the limiting space is larger than the diameter of the first shaft part.

2. The motor stator press-fit bearing device according to claim 1, characterized in that: The bearing feeding mechanism includes a bearing vibration plate, a bearing conveying channel, a bearing fixture and a bearing multi-axis translation drive assembly; the bearing vibration plate is connected to the bearing conveying channel, and the bearing multi-axis translation drive assembly drives the bearing fixture to move back and forth between the bearing conveying channel and the bearing base.

3. The motor stator press-fit bearing device according to claim 2, characterized in that: The bearing feeding mechanism includes a horizontal rotation drive assembly and two bearing fixtures, the bearing multi-axis translation drive assembly is drivingly connected to the horizontal rotation drive assembly, the horizontal rotation drive assembly is drivingly connected to the two bearing fixtures, and the bearing multi-axis translation drive assembly drives the bearing fixtures to move by driving the horizontal rotation drive assembly; A blanking station is arranged on one side of the pressing mechanism. When the bearing multi-axis translation drive assembly drives the horizontal rotation drive assembly to move between the blanking station and the pressing mechanism, the horizontal rotation drive assembly can drive the two bearing fixtures so that one of the bearing fixtures moves to the bearing base and the other bearing fixture moves to the blanking station.

4. The motor stator press-fit bearing device according to claim 1, characterized in that: The stator feeding mechanism includes a stator vibration plate, a stator conveying channel, a stator clamp, a stator flip drive assembly and a stator multi-axis translation drive assembly; The stator vibration plate is connected to the stator conveying channel, the stator multi-axis translation drive assembly is driven and connected to the stator flip drive assembly, the stator flip drive assembly is driven and connected to the stator clamp, the stator clamp moves back and forth between the stator conveying channel and the bearing base under the drive of the stator multi-axis translation drive assembly, and the stator clamp swings up and down under the drive of the stator flip drive assembly.

5. A motor stator press-fit bearing device according to any one of claims 1 to 4, characterized in that: When the motor stator press-fit bearing device performs the loading step, the bearing loading mechanism places the first bearing into the guide channel, the first bearing abuts the bearing support portion, the guide column is provided in the inner ring of the first bearing, and is loosely fitted with the inner ring of the first bearing. Then, the stator loading mechanism places the motor stator into the guide channel with the first shaft portion facing downward and the second shaft portion facing upward, the first shaft portion extends into the limiting space and abuts the stator support portion. Then, the bearing loading mechanism places the first bearing into the guide channel, and the inner ring of the second bearing abuts the second shaft portion. When the motor stator press-fitting bearing device performs the press-fitting step, the lower press seat is driven by the lower press drive assembly to descend and press the second bearing. The second bearing and the motor stator are lowered together, and the motor stator drives the stator support part to descend. When the stator support part descends, it drives the stator positioning part to descend and move toward the axial direction close to the guide column until the straight-line distance between the outermost side of the stator positioning part and the axis of the guide column is less than the diameter of the inner ring of the first bearing. At this time, the elastic part produces elastic deformation. Subsequently, during the descending process of the lower press seat, the lifting drive assembly drives the guide column to synchronously descend to a preset position, so that the guide column avoids the first shaft part from entering the inner ring of the first bearing.

6. A motor stator press-fit bearing device according to any one of claims 1 to 4, characterized in that: A plurality of guide rails are provided in the lifting channel, and the guide rails gradually extend in an upward direction toward the radial direction of the lead, and the stator positioning member is correspondingly slidably fitted with the guide rails.

7. A motor stator press-fit bearing device according to any one of claims 1 to 4, characterized in that: In the upward direction, the guide track extends in a spiral direction around the axis of the guide post or in a straight direction.

8. The motor stator press-fit bearing device according to any one of claims 1 to 4, characterized in that: A chamfer is formed at an edge of the first shaft portion, and the stator positioning member can move along the chamfer when the stator positioning member descends.

9. A motor stator press-fit bearing device according to any one of claims 1 to 4, characterized in that: A pressing portion is formed at the bottom of the lower pressing seat, and an annular inner ring guide portion is provided at the bottom of the pressing portion. The outer diameter of the inner ring guide portion gradually decreases in a downward direction.

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