An uninterrupted automatic press-fitting device for motor rotor bearings

Abstract

The present invention discloses an uninterrupted automatic press-fitting device for motor rotor bearings, which relates to the field of motor assembly. This solution ensures high-precision bearing press-fitting through three calibration processes. First, the equipment clamps one end of the rotor to a suitable axial position to achieve preliminary spatial calibration; when the clamping force reaches the set value, the support module compresses to move one end of the rotor to a fitted state to complete the second distance calibration; under rigid support, the pressure rod drives the pressure cylinder, and the positioning terminal accurately aligns the bearing to the end of the rotor to achieve the final alignment and press-fitting. This design solves the problems of low precision of traditional press-fitting, reliance on workers' experience, and easy bearing offset and uneven stress. The end clamping and extrusion method in the solution ensures that the rotor end is subjected to concentrated force under high pressure, does not cause overall deformation, and maintains the precise fit between the rotor and the bearing. Overall, this equipment not only improves the press-fitting accuracy, but also improves assembly efficiency and long-term stability.

Description

Technical Field

[0001] The invention relates to the field of motor assembly, and in particular to an uninterrupted automatic press-fitting device for a motor rotor bearing. Background Art

[0002] In the motor manufacturing process, the press-fitting of bearings is one of the key links, which directly affects the running accuracy and stability of the motor. The traditional bearing press-fitting method mainly relies on manual or semi-automatic equipment to complete the press-fitting process by manually adjusting the pressure. However, manual operation is not only time-consuming, but also has problems such as uneven pressure and easy assembly errors, which lead to uneven force on the bearings, accelerated wear, and may cause adverse effects such as unstable motor operation and increased noise. In addition, the traditional press-fitting process is highly dependent on the experience of workers, and long-term operation may cause fatigue, which in turn affects the quality of press-fitting.

[0003] During the press-fitting process of motor rotor bearings, traditional press-fitting equipment usually has difficulty in achieving high-precision axial position calibration, especially for the precise alignment of bearing positions. Traditional equipment generally relies on preset mechanical limits to control the assembly position of the bearings, lacking a dynamic alignment adjustment mechanism for the rotor and bearings, which can easily lead to axial or radial displacement of the bearings during the press-fitting process, resulting in loose fit between the rotor and the bearing or large differences in stress distribution, which directly affects the running stability and service life of the motor.

[0004] In response to the above problems, semi-automatic or automatic press-fitting equipment has gradually appeared on the market. Although these devices have improved the press-fitting efficiency to a certain extent, due to the differences in equipment design, they basically adopt the method of pressing the bearings at both ends at the same time, or fixing the rotor surface and pressing the bearings at both ends. The current method is based on the overall fixation of the rotor for a certain length, so that the rotor is subjected to stress during the bearing press-fitting process, and it is very easy to cause stress deformation of other installation parts or the overall structure at a longer length. For some high-speed motors, there are certain hidden dangers. Summary of the invention

[0005] The purpose of the present invention is to solve the problems of low efficiency and great influence of precision on press-fitting quality in the traditional press-fitting method, and to propose an uninterrupted automatic press-fitting device for motor rotor bearings.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an uninterrupted automatic press-fitting device for motor rotor bearings, comprising a conveying platform and a plurality of rotors sequentially transmitted at a fixed distance on the surface of the conveying platform, wherein two sides of the conveying platform are symmetrically provided with stands, and further comprising:

[0007] Two sets of driving components are respectively arranged on two upright frames and connected through belt transmission, and the two sets of driving components are symmetrically arranged on both sides of the conveying platform and operate synchronously;

[0008] The calibration assembly is arranged on one side of the conveying platform, clamps the rotor and positions it to a predetermined position, and moves one end of the rotor axially at the predetermined position to fit the bearing for positioning;

[0009] The press-fit assembly is located at the corresponding axial position of the bearing, and the bearing is assembled after the bearing is aligned with one end of the rotor by a small amount;

[0010] Two action components are rotatably mounted on the stand, and the two action components are matched with a set of driving components to synchronously drive the calibration component and the pressing component to operate;

[0011] The two sets of driving components synchronously control the two calibration components and the pressing component to position and calibrate the two ends of the rotor and the bearing three times respectively, and press the bearings into the predetermined positions at the two ends of the rotor at a fixed distance.

[0012] As a further description of the above technical solution: the conveying platform includes a positioning frame for maintaining the posture of the rotor, the inner wall of the positioning frame is installed with a fixed-distance conveyor belt for the rotor to move sequentially, and the surface of the positioning frame is provided with two recesses for the axial sliding of the rotor.

[0013] As a further description of the above technical solution: the driving assembly includes two synchronous gears installed on the surface of the stand and meshing with each other, a synchronous shaft is rotatably installed on the surface of the stand, a driven gear is fixedly connected to the synchronous shaft, the driven gear is meshed with the action assembly for transmission, a cooperative wheel is coaxially installed on the upper surface of the corresponding synchronous gear, the cooperative wheels of the two driving assemblies are connected by belt drive, a driving gear is meshed on one side of the synchronous gear, and a driver for driving the driving gear is installed on the surface of the stand.

[0014] As a further description of the above technical solution: the calibration component includes two supports fixedly connected to the stand, the surface of the support is penetrated by a strip-shaped slide groove, the inner wall of the support is slid with a clamp, the surface of the clamp is penetrated by a sliding shaft that cooperates with the slide groove to slide, the other side of the clamp is matched with the action component for transmission, and support modules are symmetrically fixed on both sides of the support for elastically supporting the sliding shaft.

[0015] As a further description of the above technical solution: the support module includes a support plate fixedly connected to one side of the support seat, a through rod sliding through the surface of the support plate, one end of the through rod is limited and pressed by the sliding shaft, a support spring is arranged on the surface of the through rod, and a limit block is fixedly connected to the surface of the through rod for contacting the support plate and limiting the sliding of the through rod.

[0016] As a further description of the above technical solution: the pressing assembly includes a retaining frame fixedly connected to the surface of the stand, a pressure rod slidingly passing through the inner wall of the retaining frame, one end of the pressure rod is fixedly connected to a holding cylinder, one end of the inner wall of the holding cylinder is slidably provided with a positioning terminal, the inner wall of the holding cylinder is provided with a positioning spring for elastically supporting the positioning terminal, and the other end of the pressure rod is in transmission cooperation with the action assembly.

[0017] As a further description of the above technical solution: the action component includes a first action wheel installed on one side of the stand, a second action wheel is coaxially fixed on the surface of the first action wheel, a first swing arm is movably connected to the surface of the first action wheel through a pin, the other end of the first swing arm is movably connected to one end of the pressure rod, and the surface of the second action wheel is movably connected to the second swing arm through a pin, the action component also includes two deflection plates movably connected to one end of the two clamps, the opposite ends of the two deflection plates are movably connected through a pin, and the second swing arm is movably connected to one end of the two deflection plates.

[0018] As a further description of the above technical solution: it also includes a feeding assembly, which includes a stabilizing frame fixedly connected to one side of the vertical frame, and the surface of the stabilizing frame is fixedly connected with an arc guide groove for transmitting the bearing, and the bottom end of the arc guide groove is provided with a discharge port for the bearing to slide out.

[0019] As a further description of the above technical solution: the synchronous gear controls the rotation of the corresponding side action component, and controls the two action components to form a combined force to drive the calibration component and the pressing component.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] This solution operates the action components on both sides at the same time under the synchronous operation of two sets of driving components. The action component clamps one end of the rotor with the calibration component, so that after one end is clamped, the whole is positioned to a suitable axial position to complete a spatial position calibration. When the clamping force reaches a certain level, the support module is compressed, so that the rotor moves after being clamped, and one end is moved to the fitting state on one side of the bearing to complete the secondary press-fit distance calibration. When in the fitting state, its support module reaches the maximum compression and presents a rigid support. At this time, the rotor is clamped in a rigid clamping and locking state, and the pressure rod carries the pressure The cylinder moves, and the positioning terminal at one end of the cylinder passes through the bearing and rests against one end of the rotor, keeping the bearing aligned with one end of the rotor, and realizing three calibrations. As the cylinder is pressed down, the bearing is pressed into one end of the rotor, and one end of the rotor is pulled by the fixture and squeezed by the cylinder, and the rotor is pressed. This method uses three continuous calibration methods, which can control the accuracy of the press fitting within 0.1mm, and the press fitting in the fitted state can maintain the calibration state, that is, the press fitting state, and the accuracy will not change. Finally, the third calibration determines and calibrates the bearing position, ensuring the two-way calibration of the rotor and the bearing and realizing high-precision assembly.

[0022] In the above method, the problem of low precision in continuous press-fitting machinery is significantly improved. Based on the high efficiency requirements of continuous press-fitting machinery, there are often shortcomings in the positioning design of the rotor. There are a certain number of quality problems in long-term press-fitting, such as axial or radial displacement of the bearing during the press-fitting process. This ensures that the rotor and the bearing are closely matched, the pressure head is closely matched, and the stress distribution is uniform.

[0023] At the same time, this solution adopts the method of clamping and pulling the end and squeezing the bearing to assemble. The overall force of the rotor is local to the end. The overall length span is small, the force area is small, and the force is concentrated in the area with the largest stiffness at the rotor end. It will not cause load on the overall assembly of the rotor, ensuring that the overall installation will not be deformed. Under the large pressing force of the bearing, a more stable installation method is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the present invention from another viewing angle;

[0026] Figure 3 It is a structural schematic diagram of the present invention from the right side;

[0027] Figure 4 It is a three-dimensional structural schematic diagram of the driving assembly of the present invention;

[0028] Figure 5It is a schematic diagram of the structure of the cooperation of the action component, the calibration component and the pressing component of the present invention;

[0029] Figure 6 It is a three-dimensional structural schematic diagram of the action component of the present invention;

[0030] Figure 7 It is a three-dimensional structural schematic diagram of the calibration component of the present invention;

[0031] Figure 8 It is a three-dimensional structural schematic diagram of the support module of the present invention;

[0032] Fig. 9 It is a three-dimensional structural schematic diagram of the conveying platform of the present invention;

[0033] Fig.10 It is a three-dimensional structural schematic diagram of the feeding assembly of the present invention.

[0034] Legend:

[0035] 10. Conveyor platform; 11. Positioning frame; 12. Fixed-distance conveyor belt; 13. Notch;

[0036] 20. Driving assembly; 21. Driver; 22. Driving gear; 23. Synchronous gear; 24. Synchronous shaft; 25. Driven gear; 26. Coordinating wheel;

[0037] 30. Action assembly; 31. First action wheel; 32. Second action wheel; 33. First swing arm; 34. Second swing arm; 35. Deflection plate;

[0038] 40. calibration assembly; 41. support seat; 42. fixture; 43. slide slot; 44. slide shaft; 45. support module; 451. support plate; 452. through rod; 453. support spring; 454. limit block;

[0039] 50. Press-fit assembly; 51. Press-holding cylinder; 52. Positioning terminal; 53. Positioning spring; 54. Press rod; 55. Cage;

[0040] 60. Feeding assembly; 61. Arc guide groove; 62. Stabilizing frame; 63. Discharging port;

[0041] 70. Stand. DETAILED DESCRIPTION

[0042] 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.

[0043] like Figure 1-Figure 10 As shown, the present invention provides: an uninterrupted automatic press-fitting device for motor rotor bearings, comprising a conveying platform 10 and a plurality of rotors sequentially transmitted at a fixed distance on the surface of the conveying platform 10, wherein two sides of the conveying platform 10 are symmetrically provided with stands 70, two groups of drive assemblies 20 are respectively provided on the two stands 70 and connected by belt transmission, and the two groups of drive assemblies 20 are symmetrically provided on both sides of the conveying platform 10 and operate synchronously; a calibration assembly 40 is provided on one side of the conveying platform 10, clamps the rotor and positions it to a predetermined position, and moves one end of the rotor axially at the predetermined position to fit the bearing for positioning; a pressing assembly 50 is located at a corresponding axial position of the bearing, and the bearing is assembled after the bearing is slightly positioned and aligned with one end of the rotor; two action assemblies 30 are rotatably mounted on the stands 70, the two action assemblies 30 are transmission-coordinated with a group of drive assemblies 20, and synchronously drive the calibration assembly 40 and the pressing assembly 50 to operate; the two groups of drive assemblies 20 synchronously control the two calibration assemblies 40 and the pressing assembly 50 to position and calibrate the two ends of the rotor and the bearing three times respectively, and press the bearing into the predetermined positions at the two ends of the rotor at a fixed distance.

[0044] This solution uses three positioning calibration methods during the continuous press-fitting process, combined with the active positioning of the rotor and the active positioning of the bearing to ensure maximum calibration accuracy;

[0045] At the same time, compared with the traditional one-end press-fitting method or the two-end press-fitting method at the same time, this solution adopts the method of local force on the rotor to press-fit the bearing, which reduces the influence of the overall strain force of the rotor during press-fitting and ensures relatively stable press-fitting stability.

[0046] Specifically, Fig. 9 As shown: the conveying platform 10 includes a positioning frame 11 for maintaining the posture of the rotor, the inner wall of the positioning frame 11 is installed with a fixed-distance conveyor belt 12 for sequential movement of the rotor, and the surface of the positioning frame 11 is provided with two notches 13 for axial sliding of the rotor.

[0047] By setting a fixed-distance conveyor belt, the rotor can be moved sequentially and moved to the position of the notch 13. The rotor can move axially at the notch 13. In conjunction with the positioning frame 11, the conveyor belt can be used to transport the rotor, while maintaining the axial position while maintaining the transmission of the rotor.

[0048] Specifically, Figure 4As shown: the driving assembly 20 includes two synchronous gears 23 installed on the surface of the stand 70 and meshing with each other, a synchronous shaft 24 is rotatably installed on the surface of the stand 70, a driven gear 25 is fixedly connected to the synchronous shaft 24, the driven gear 25 is meshed with the action assembly 30 for transmission, a cooperative wheel 26 is coaxially installed on the upper surface of the corresponding synchronous gear 23, the cooperative wheels 26 of the two driving assemblies 20 are connected by belt drive, a driving gear 22 is meshed on one side of the synchronous gear 23, and a driver 21 for driving the driving gear 22 is installed on the surface of the stand 70.

[0049] By providing the synchronous gear 23 and the mutual meshing of the two synchronous gears 23 , the driven wheel can be rotated through the synchronous shaft 24 , so that the driven wheel drives the two action components 30 to operate synchronously.

[0050] Specifically, Figure 7 As shown: the calibration component 40 includes two supports 41 fixedly connected to the stand 70, the surface of the support 41 is penetrated by a strip-shaped slide groove 43, the inner wall of the support 41 is slid with a clamp 42, the surface of the clamp 42 is penetrated by a sliding shaft 44 that cooperates with the slide groove 43 to slide, the other side of the clamp 42 is in transmission cooperation with the action component 30, and support modules 45 are symmetrically fixed on both sides of the support 41 for elastically supporting the sliding shaft 44.

[0051] By setting the calibration component 40, the clamp 42 slides in the support 41, and the clamp 42 rotates and slides in the slide groove 43 through the sliding shaft 44. When one side of the clamp 42 is subjected to force, the sliding shaft 44 is used as a support to form a lever clamp to maintain a stable clamping of one end of the rotor.

[0052] Specifically, Figure 8 As shown: the support module 45 includes a support plate 451 fixedly connected to one side of the support base 41, a through rod 452 is slidably penetrated through the surface of the support plate 451, one end of the through rod 452 is limited and pressed by the sliding shaft 44, a support spring 453 is arranged on the surface of the through rod 452, and a limit block 454 is fixedly connected to the surface of the through rod 452 for contacting the support plate 451 and limiting the sliding of the through rod 452.

[0053] By setting the through rod 452, one end of the sensor is pressed by the sliding shaft 44. When the sliding shaft 44 slides in the sliding groove 43, it can press the sensor to slide on the surface of the support plate 451, and at the same time press the supporting spring 453. The supporting spring 453 maintains support for the clamp 42. After moving to a certain distance, its limit block 454 can maintain rigid support, so that its supporting spring 453 will not be compressed, and the clamp 42 is kept rigidly clamped.

[0054] Specifically, Figure 7As shown: the pressing assembly 50 includes a retaining frame 55 fixedly connected to the surface of the stand 70, a pressure rod 54 slides through the inner wall of the retaining frame 55, one end of the pressure rod 54 is fixedly connected to a holding cylinder 51, one end of the inner wall of the holding cylinder 51 slides with a positioning terminal 52, the inner wall of the holding cylinder 51 is provided with a positioning spring 53 for elastically supporting the positioning terminal 52, and the other end of the pressure rod 54 is in transmission cooperation with the action assembly 30.

[0055] By setting up the retaining frame 55, the retaining frame 55 can guide the pressure rod 54 to move stably in a predetermined direction, and its positioning terminal 52 can keep the positioning terminal 52 telescopically sliding on the inner wall of the holding cylinder 51 through the positioning spring 53. The positioning terminal 52 contacts one end of the bearing and retracts to keep the bearing calibrated and positioned, providing a transition support for the movement of the bearing.

[0056] Specifically, Figure 6 As shown: the action component 30 includes a first action wheel 31 installed on one side of the stand 70, a second action wheel 32 is coaxially fixed on the surface of the first action wheel 31, a first swing arm 33 is movably connected to the surface of the first action wheel 31 through a pin, the other end of the first swing arm 33 is movably connected to one end of the pressure rod 54, and the surface of the second action wheel 32 is movably connected to the second swing arm 34 through a pin. The action component 30 also includes two deflection plates 35 movably connected to one end of the two clamps 42, the opposite ends of the two deflection plates 35 are movably connected through a pin, and the second swing arm 34 is movably connected to one end of the two deflection plates 35.

[0057] By setting the action component 30, the first action wheel 31 and the second action wheel 32 of the action component 30 are relatively fixed and rotated on the stand 70, so as to maintain stable rotation. Meanwhile, the first swing arm 33 and the second swing arm 34 can maintain a movement of a far point and a near point, so as to reduce the swing force during staggered rotation.

[0058] Specifically, Fig.10 As shown: it also includes a feeding component 60, which includes a stabilizing frame 62 fixedly connected to one side of the vertical frame 70, and the surface of the stabilizing frame 62 is fixedly connected with an arc guide groove 61 for transmitting bearings, and the bottom end of the arc guide groove 61 is provided with a discharge port 63 for the bearing to slide out.

[0059] The arc guide groove 61 is supported by a stabilizing frame 62 to keep the arc guide groove 61 sliding and stably supporting the bearing inside. Through the setting of the discharge port 63, the bearing can be ejected at the discharge port 63 after naturally falling to this position, thereby realizing a continuous and stable bearing supply as a whole.

[0060] Specifically, Figure 2As shown: the synchronous gear 23 controls the corresponding side action component 30 to rotate, and controls the two action components 30 to form a combined force to drive the calibration component 40 and the pressing component 50.

[0061] By adopting the synchronous operation of the two action components 30, the calibration component 40 and the pressing component 50 can be driven synchronously on both sides, so that the interaction force of the two action components 30 can be offset and the stable driving of the calibration component 40 and the pressing component 50 is guaranteed.

[0062] The above method has a significant guarantee effect on the long-term matching effect of the rotor and the bearing. At the same time, through the design of end clamping and extrusion under high-pressure loading conditions, the tight fit between the bearing and the rotor is guaranteed, precise two-way alignment is achieved, and the final precise press-fit is completed in a rigid support state, thereby ensuring the stability of the structure and the matching accuracy throughout the process, making the press-fitting process under high-pressure loading more reliable. Through this innovative multi-stage synchronous calibration and local concentrated force design, this solution effectively solves the key problems of press-fitting accuracy, stress distribution and long-term assembly quality consistency in the prior art, and is suitable for the field of motor manufacturing with high precision and high efficiency requirements.

[0063] When the present solution is in use, the cooperative wheels 26 of the two driving assemblies 20 are driven by belts to maintain synchronous operation, so that the bearings on both sides are pressed synchronously. Under the action of the driver 21 of the driving assembly 20, the two synchronous shafts 24 rotate through the matching meshing of the synchronous gear 23, and the driven gear 25 on the synchronous shaft 24 meshes with the first action wheel 31 of the action assembly 30 and drives it to rotate. At this time, the first action wheels 31 of the two symmetrical action assemblies 30 rotate with the second action wheels 32 at the same time. When the first action wheels 31 and the second action wheels 32 rotate, they rotate respectively. The first swing arm 33 and the second swing arm 34 make a circular motion, wherein one end of the first swing arm 33 and the second swing arm 34 is located at the far end of the first action wheel 31 and the second action wheel 32. When the second swing arm 34 makes a circular motion, it first squeezes one end of the two deflection plates 35, so that the other end of the deflection plates 35 presses the left side of the clamp 42. The left sides of the two clamps 42 are pressed at the same time, so that they form a lever through the sliding shaft 44 as a support point, and keep the right sides of the two clamps 42 clamped to clamp one end of the rotor. At this time, the rotor is clamped and positioned to a constant height;

[0064] As the second swing arm 34 continues to hold the two deflection plates 35, the clamping force gradually increases, but there is no clamping displacement, so that as the force continues to increase, the sliding shaft 44 slides in the sliding groove 43 and presses the penetrating rod 452 to slide on the surface of the support plate 451, and at the same time, the clamp 42 slides in the support plate 451 and moves, and the support spring 453 on the surface of the sliding shaft 44 is compressed. At this time, the clamp 42 performs axial movement while maintaining the state of clamping the rotor, and moves the rotor axially to a position close to the bearing;

[0065] When the rotor moves to the bearing position, the second actuating wheel 32 reaches its maximum holding force, and at the same time, the limit block 454 on the surface of the sliding shaft 44 contacts the support plate 451, maintaining the support of the through rod 452, and the support spring 453 cannot be further compressed, maintaining the clamping force of the clamp 42 at the maximum state;

[0066] In synchronization with the above operation process, the first actuating wheel 31 and the second actuating wheel 32 rotate synchronously. During the rotation of the first actuating wheel 31, the first swing arm 33 on its surface moves by pulling the pressure rod 54, and the pressure rod 54 pulls the holding cylinder 51 to move toward one end of the rotor. First, the positioning terminal 52 sliding at the end of the holding cylinder 51 passes through the bearing, and the bearing position is calibrated when the tip of the positioning terminal 52 passes through the bearing until the positioning terminal 52 contacts one end of the rotor. At this time, the positioning terminal 52 contacts one end of the rotor and maintains the axial position pressure, thereby realizing the calibration and orientation of the bearing.

[0067] When the positioning terminal 52 contacts the rotor, the holding cylinder 51 also contacts the bearing and presses the bearing to slide out of the discharge port 63 of the arc guide groove 61. At the same time, the positioning terminal 52 slides in the holding cylinder 51 and compresses the positioning spring 53 until it is completely retracted into the holding cylinder 51. The holding cylinder 51 presses the bearing into one end of the rotor, and as the holding continues, the positioning terminal 52 is also continuously compressed, and one end of the rotor slides into the holding cylinder 51 and slides in the holding cylinder 51, and the bearing is further pressed into the specified position. The design of this solution in the above process mainly solves the accuracy and stability problems of traditional press-fitting equipment in the matching of motor rotors and bearings. Specific technical problems include insufficient control of multiple calibration accuracy, coordination of high precision and high efficiency, long span of the rotor and force uniformity, and assembly stability under high pressure. Traditional equipment lacks multi-level alignment and calibration means, which often leads to slight axial or radial offsets between the bearing and the rotor. This solution uses three calibrations, namely, precise alignment and locking of positions at different stages of clamping, fitting and press-fitting, to ensure that the assembly accuracy of the rotor and bearing is always controlled within 0.1mm. This design effectively avoids the adverse effects caused by offset during the traditional press-fitting process.

[0068] As the first action wheel 31 brings the first swing arm 33 to the maximum movement stroke, the first action wheel 31 and the second action wheel 32 respectively bring the first swing arm 33 and the second swing arm 34 to start the reset movement, and the holding cylinder 51 slides out and away from one end of the rotor until the holding cylinder 51 slides out of the discharge port 63, and other bearings are refilled under the action of gravity. At the same time, as the clamp 42 remains clamped under the action of the supporting spring 453 and slides the slide shaft 44 in the slide groove 43 to reset, the clamp 42 maintains the clamping of the rotor and resets it, and then releases the clamp. Then the fixed-distance conveyor belt 12 of the conveying platform 10 moves the rotor. After the next rotor moves to the recess 13 position, the fixed-distance conveyor belt 12 stops, and the clamp 42 clamps again. This method realizes a higher frequency press-fitting operation on the rotor. At the same time, if there is no rotor in an unloaded state, its bearing will be pushed out of the discharge port 63 and fall off, and will not be damaged, thereby realizing continuous production operation. It solves the problem that high precision and high efficiency often conflict with each other in automated operations, and adopts a three-stage synchronous calibration mechanism to ensure assembly accuracy even under high-efficiency continuous operations. Especially during long-term continuous operations, the multi-stage calibration design significantly avoids quality problems such as reduced accuracy or press-fit position offset caused by equipment fatigue. In terms of the long span of the rotor and uniformity of force, the traditional two-end fixed press-fit method will cause the rotor to be stressed as a whole, especially for longer rotors, causing stress concentration under axial pressure, which is prone to axial deformation. This solution concentrates the press-fit force on the rigid area of ​​the rotor end by combining local clamping and pulling with extrusion at the rotor end, effectively avoiding the risk of deformation of the long-axis rotor under high-pressure loading, thereby improving assembly stability and ensuring uniform distribution of force.

[0069] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An uninterrupted automatic press-fitting device for motor rotor bearings, comprising a conveying platform (10) and a plurality of rotors sequentially transported at fixed intervals on the surface of the conveying platform (10), wherein two sides of the conveying platform (10) are symmetrically provided with stands (70), characterized in that: Also includes: Two sets of drive assemblies (20) are respectively arranged on two upright frames (70) and connected via a belt drive, and the two sets of drive assemblies (20) are symmetrically arranged on both sides of the conveying platform (10) and operate synchronously; A calibration component (40) is arranged on one side of the conveying platform (10), clamps the rotor and positions it to a predetermined position, and moves one end of the rotor axially at the predetermined position to fit the bearing for positioning; The press-fit assembly (50) is located at a corresponding axial position of the bearing, and the bearing is slightly positioned to align with one end of the rotor before the bearing is assembled; Two action assemblies (30) are rotatably mounted on the stand (70); the two action assemblies (30) are in transmission cooperation with a set of driving assemblies (20) and synchronously drive the calibration assembly (40) and the pressing assembly (50) to operate; The two sets of driving components (20) synchronously control the two calibration components (40) and the pressing component (50) to position and calibrate the two ends of the rotor and the bearing three times respectively, and press the bearing into the predetermined positions at the two ends of the rotor at a predetermined distance; The driving assembly (20) comprises two synchronous gears (23) mounted on the surface of the stand (70) and meshing with each other, a synchronous shaft (24) is rotatably mounted on the surface of the stand (70), a driven gear (25) is fixedly connected to the synchronous shaft (24), the driven gear (25) meshes with the action assembly (30) for transmission, a cooperative wheel (26) is coaxially mounted on the upper surface of the corresponding synchronous gear (23), the cooperative wheels (26) of the two driving assemblies (20) are connected via a belt drive, a driving gear (22) is meshed on one side of the synchronous gear (23), and a driver (21) for driving the driving gear (22) is mounted on the surface of the stand (70); The calibration component (40) comprises two supports (41) fixedly connected to the stand (70), the surface of the support (41) being penetrated by a strip-shaped slide groove (43), the inner wall of the support (41) being slidably provided with a clamp (42), the surface of the clamp (42) being penetrated by a sliding shaft (44) that is slidably matched with the slide groove (43), the other side of the clamp (42) being transmission-matched with the action component (30), and support modules (45) being symmetrically fixed on both sides of the support (41) for elastically supporting the sliding shaft (44).

2. The uninterrupted automatic press-fitting equipment for motor rotor bearings according to claim 1 is characterized in that: The conveying platform (10) comprises a positioning frame (11) for maintaining the posture of the rotor, the inner wall of the positioning frame (11) is installed with a fixed-distance conveying belt (12) for sequential movement of the rotor, and the surface of the positioning frame (11) is provided with two notches (13) for axial sliding of the rotor.

3. The uninterrupted automatic press-fitting equipment for motor rotor bearings according to claim 1 is characterized in that: The support module (45) comprises a support plate (451) fixedly connected to one side of the support seat (41); a through rod (452) is slidably penetrated through the surface of the support plate (451); one end of the through rod (452) is limited and pressed by the sliding shaft (44); a support spring (453) is arranged on the surface of the through rod (452); and a limit block (454) is fixedly connected to the surface of the through rod (452) for contacting the support plate (451) and limiting the sliding of the through rod (452).

4. The uninterrupted automatic press-fitting equipment for motor rotor bearings according to claim 1 is characterized in that: The pressing assembly (50) comprises a retaining frame (55) fixedly connected to the surface of the stand (70), a pressure rod (54) slidingly passing through the inner wall of the retaining frame (55), one end of the pressure rod (54) fixedly connected to a holding cylinder (51), a positioning terminal (52) slidingly disposed on one end of the inner wall of the holding cylinder (51), a positioning spring (53) for elastically supporting the positioning terminal (52) being provided on the inner wall of the holding cylinder (51), and the other end of the pressure rod (54) being in transmission cooperation with the action assembly (30).

5. The uninterrupted automatic press-fitting equipment for motor rotor bearings according to claim 4 is characterized in that: The action assembly (30) comprises a first action wheel (31) mounted on one side of the stand (70); a second action wheel (32) is coaxially fixed to the surface of the first action wheel (31); a first swing arm (33) is movably connected to the surface of the first action wheel (31) via a pin; the other end of the first swing arm (33) is movably connected to one end of a pressure rod (54); the surface of the second action wheel (32) is movably connected to the second swing arm (34) via a pin; the action assembly (30) further comprises two deflection plates (35) movably connected to one end of the two clamps (42); opposite ends of the two deflection plates (35) are movably connected via a pin; and the second swing arm (34) is movably connected to one end of the two deflection plates (35).

6. The uninterrupted automatic press-fitting equipment for motor rotor bearings according to claim 1 is characterized in that: The invention also comprises a feeding assembly (60), wherein the feeding assembly (60) comprises a stabilizing frame (62) fixedly connected to one side of the vertical frame (70), an arc-shaped guide groove (61) for transmitting the bearing being fixedly connected to the surface of the stabilizing frame (62), and a discharge port (63) for the bearing to slide out is formed at the bottom end of the arc-shaped guide groove (61).

7. The uninterrupted automatic press-fitting equipment for motor rotor bearings according to claim 1 is characterized in that: The synchronous gear (23) controls the corresponding side action assembly (30) to rotate, and controls the two action assemblies (30) to form a combined force to drive the calibration assembly (40) and the pressing assembly (50).

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