Tbb double bearing sleeve device

Abstract

The application discloses a TBB double-layer bearing combined sleeve device and relates to the technical field of bearing processing. The device comprises a rack and two groups of retainer frame feeding mechanisms mounted on the rack, which respectively store large retainers and small retainers and elastically and adaptively and flexibly transplant the large retainers and the small retainers in different areas. Two groups of retainer frame transmission mechanisms automatically transmit the transplanted large retainers and small retainers. A ball supply mechanism independently supplies steel balls to the large retainers and the small retainers in two ways. A ball adding mechanism, a turnover mechanism, an inner ring transmission mechanism, an outer ring transmission mechanism, an assembling mechanism, a weighing mechanism, a demagnetization mechanism, a discharging mechanism and the like are further arranged. The device can automatically distinguish two types of retainers required by TBB double-layer bearing assembly, eliminate the mixed loading and misaligned assembly of large and small retainers caused by manual sorting from the source, realize large-batch material storage through matched material trays and bins, reduce the frequency of manual material supplement and improve the continuity of material supply.

Description

Technical Field

[0001] This invention belongs to the field of bearing processing technology, and specifically relates to a TBB double-layer bearing assembly device. Background Technology

[0002] TBB double-layer bearings have a double-row independent raceway structure. During assembly, the cage and steel balls need to be pre-installed on both sides of the raceway, and then the inner and outer rings are pressed together. The bearing assembly requires distinguishing between the A and B side components, multiple sizes of matching steel balls, and pairing the inner and outer rings with group tolerances. At present, the industry's double-layer bearing assembly mainly relies on operators to manually select the matching steel ball specifications based on the actual measured dimensions of the inner and outer ring grooves, place the cage components on both sides, manually complete the steel ball filling, component distribution, and outer ring assembly. After assembly, the number of steel balls is counted manually, the assembly position is judged by touch, and finally the material is demagnetized and unloaded manually. However, since steel ball hoppers are usually open structures without specification locking, identity verification, or material level warning functions, manual ball distribution is prone to errors such as incorrect ball specifications, insufficient balls, and material shortages. Poor mixing directly leads to batch scrapping of bearings. Furthermore, the steel balls and cage assemblies on both sides cannot be transported separately, which can easily lead to mixed loading and misaligned assembly of left and right components, affecting overall processing efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a TBB double-layer bearing assembly device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A TBB double-layer bearing assembly includes a frame and two sets of cage feeding mechanisms mounted on the frame, which respectively store a large cage and a small cage, and elastically and adaptively transfer the large cage and the small cage in sections. Two sets of cage transfer mechanisms are installed on one side of the cage feeding mechanism to automatically transfer the large and small cages obtained from the transplantation. The ball supply mechanism, located above the cage feeding mechanism, supplies steel balls to the large and small cages in two independent streams. The ball feeding mechanism, located on one side of the cage transfer mechanism, receives the steel balls transferred by the ball feeding mechanism and presses the steel balls one by one into the cage; The flipping mechanism, located on one side of the ball-adding mechanism, flips the cage filled with steel balls for backflow transfer. Inner ring transmission mechanism, used for directional transmission of the inner ring to be assembled; The outer ring transmission mechanism directs the transmission of the outer ring to be assembled. The assembly mechanism sequentially grips the large and small cages and attaches them to the inner ring to form a double-layered assembly. The weighing mechanism determines the missing ball by comparing the weight, and the qualified ball is linked to the outer ring transmission mechanism to complete the initial assembly. The demagnetizing mechanism picks up the outer ring and the initially assembled parts from the outer ring transmission mechanism, assembles them, and completes the demagnetizing operation. The discharge mechanism separates the demagnetized finished products and the defective products (NG) from different areas.

[0005] Preferably, the cage feeding mechanism includes a lifting mechanism, a cage transfer mechanism, and a material tray for storing large and small cages. The material tray uses a column-type sleeve method for storage. The lifting mechanism is installed on one side of the material tray to lift and feed the cages stored in the material tray. The cage transfer mechanism is installed on the other side of the material tray to transfer the lifted cages to the cage transfer mechanism for directional transmission.

[0006] Preferably, the material tray includes a rotary table mounted on a frame. Multiple sleeve rods for fitting storage retainers are fixed at equal angles on the rotary table. Lifting plates are slidably fitted on the sleeve rods. The lifting mechanism drives the lifting plates to rise gradually, so that the retainers on the sleeve rods are fed one by one to the retainer transfer mechanism. The rotary table is driven by a first rotary motor.

[0007] Preferably, the retainer transfer mechanism includes a first vertical rod, the upper end of which is fixed with a horizontal moving module. A first cylinder is installed on the moving platform of the horizontal moving module, and an elastic gripper is installed on the piston rod end of the first cylinder for gripping the upper retainer of the sleeve rod. The gripped retainer is moved horizontally to above the retainer transfer mechanism by the horizontal moving module, and then the gripped retainer is placed on the retainer transfer mechanism by the first cylinder.

[0008] Preferably, the elastic gripper includes an elastic clamping mechanism and a support mechanism located below the elastic clamping mechanism. The support mechanism is connected to the moving platform of the horizontal moving module through a support bracket, so that the horizontal moving module synchronously drives the elastic clamping mechanism and the support mechanism to move synchronously. The support mechanism is used to clamp and fix the retainer to be transplanted on the sleeve rod, so that the elastic clamping mechanism only applies downward pressure to the retainer fixed by the support mechanism.

[0009] Preferably, the cage transfer mechanism includes a transfer plate and a material transfer mechanism. One end of the transfer plate is located directly below the cage transfer mechanism. The ball adding mechanism and the flipping mechanism are both located on the same side of the other end of the transfer plate. The material transfer mechanism is installed on the other side of the transfer plate and is used to move the cage on the transfer plate.

[0010] Preferably, the ball supply mechanism includes a ball bin and a quantitative conveying mechanism installed below the ball bin. The ball bin is equipped with a ball pushing mechanism for pushing steel balls out of the bin. A discharge pipe is connected to one side of the ball bin, and a counting sensor is installed on the discharge pipe. The output end of the quantitative conveying mechanism is connected to the ball adding mechanism, and the inlet end of the quantitative conveying mechanism is connected to the outlet end of the discharge pipe. The counting sensor counts the number of steel balls flowing out of the ball bin in real time, and then the quantitative conveying mechanism delivers a number of steel balls matching the number of cage filling positions to the ball adding mechanism.

[0011] Preferably, the ball chamber is provided with multiple storage cavities, each of which is equipped with a ball pushing mechanism. Each storage cavity has a feeding pipe on its upper side wall. When the steel balls in one storage cavity are used up, they are transferred to another storage cavity for feeding.

[0012] Preferably, the quantitative conveying mechanism includes a clamping plate and a fixed base plate. A feeding base plate is fixed on the fixed base plate, and two lower ball tubes are inserted into the feeding base plate. The lower ends of the two lower ball tubes are respectively connected to the ball-adding mechanisms on both sides for conveying steel balls to the small and large cages. A servo moving mechanism is fixed on the fixed base plate, and a transfer plate is installed on the moving platform of the servo moving mechanism. A number of lower ball blocks corresponding to the number of lower ball tubes are fixed on the transfer plate. A quantitative receiving cavity is provided inside the lower ball block. The number of steel balls stored in the quantitative receiving cavity is consistent with the number of balls required to be added to the large and small cages. Multiple transmission tubes are clamped on the clamping plate. The number of transmission tubes is the same as the number of feeding pipes. The upper end of each transmission tube is connected to the lower end of the feeding pipe. The lower end of the transmission tube is flush with the lower end of the clamping plate. Both the upper and lower ends of the quantitative receiving cavity are provided with connecting holes.

[0013] Preferably, the ball-adding mechanism includes a support plate and a first bracket. The support plate is embedded in the transmission plate of the cage transmission mechanism. The lower end of the support plate is fixed to the upper surface of the frame via a second bracket. The lower end of the first bracket is fixed to the upper surface of the frame. A push cylinder is fixed to the upper end of the first bracket. A connecting plate is fixed to the piston rod end of the push cylinder, and the connecting plate is slidably connected to the first bracket. A ball-adding block is rotatably connected to one end of the connecting plate. A feeding channel is provided inside the ball-adding block. A ball-adding head is rotatably connected to the upper end of the feeding channel. The ball-adding head communicates with the lower end of the ball-feeding tube. A ball-discharge hole matching the cage filling position is provided at the lower end of the feeding channel. A second rotary motor for driving the ball-adding block to rotate is installed at the other end of the connecting plate.

[0014] Preferably, the demagnetizing mechanism includes a demagnetizing box and a pushing component. The demagnetizing box is equipped with a gantry-type demagnetizing module. The pushing component is located on one side of the demagnetizing box and pushes materials in layers according to the demagnetized finished product and the defective product detected by the leakage ball test.

[0015] Preferably, the pushing assembly includes a lifting cylinder and an L-shaped plate. The telescopic end of the lifting cylinder passes through the transmission plate in the inner ring transmission mechanism and is fixed to a support plate. When the lifting cylinder is not extended, the support plate is flush with the surface of the transmission plate in the inner ring transmission mechanism. A third support plate is fixed to the upper end of the L-shaped plate. The third support plate has a through hole for the support plate to pass through. Push blocks are provided on one side of the third support plate and the vertical side of the L-shaped plate. A pushing cylinder is fixed to one side of the push block. The mounting end of the pushing cylinder is fixed to the upper surface of the frame through a connecting bracket.

[0016] The TBB double-layer bearing assembly device proposed in this invention has the following advantages compared with the prior art: 1. This invention achieves independent feeding and conveying of cages in different zones through a cage feeding mechanism and a cage conveying mechanism. It can automatically distinguish the two types of cages required for TBB double-layer bearing assembly, eliminating the mixing and misalignment of cages of different sizes caused by manual sorting from the source. Combined with material trays and silos, it enables large-volume material storage, reduces the frequency of manual replenishment, and improves the continuity of material supply. 2. This invention can control the supply of steel balls by specification and quantity through the ball supply mechanism. It relies on multiple storage cavities to classify and store balls, counting sensors to measure each ball individually, and quantitative accommodating cavities to accurately match the amount of a single bearing. It can also isolate the feeding and discharging channels at different times to avoid ball overflow and mixing. The ball bins of the same specification can be seamlessly switched to ensure uninterrupted production and avoid the risk of batch bearing scrapping caused by mixing. 3. The present invention, through the setting of the ball-adding mechanism, can complete the pressing of all pocket steel balls along the circumference of the cage by relying on a set of ball-adding channels, which simplifies the mechanical structure and reduces the size of the equipment. During operation, the support plate locks the cage to counteract the reaction force generated by the pressing of the steel balls, effectively preventing the cage from moving, tilting, or deforming. The vertical pressing path can also reduce the impact damage to the steel balls, improve the assembly accuracy of the steel balls and the consistency of the products. 4. The flipping mechanism of the present invention can automatically flip the cage after it has been filled with steel balls by 180 degrees, which is suitable for the special process requirements of the step-by-step pre-assembly of the double-sided raceway of TBB double-layer bearings. It fills the gap in the automated processing of the double-layer bearing flipping process, eliminating the need for manual flipping of materials. At the same time, the assembly mechanism can grab the large and small cages step by step and complete the angle adjustment, and then fit them onto the upper and lower sides of the inner ring to accurately form a double-layer assembly, avoiding the problem of damage to the raceway and cage caused by manual assembly.

[0017] 5. The weighing mechanism of this invention can detect the total weight of the assembly in real time and quickly determine whether there is a missing ball defect by weight comparison. It replaces the inefficient detection method of manually counting steel balls and judging the assembly quality by feel. The detection result can be directly linked to the outer ring transmission mechanism. Only qualified pre-assembled parts are subjected to the outer ring assembly process, realizing the linkage between detection and assembly processes. With the demagnetizing mechanism, the bearing can uniformly remove the residual magnetism generated during processing and assembly by passing through the alternating decaying magnetic field at a constant speed. The magnetic field leakage is small and will not interfere with the production line electrical control components. Moreover, the demagnetizing process is embedded in the main line to realize continuous online processing, without the need for additional offline demagnetizing equipment.

[0018] 6. The discharge mechanism of the present invention can realize physical separation of good products and defective products with missing balls. The demagnetized finished products are automatically transported to the finished product area, and the defective products with missing balls are pushed separately to the NG collection channel. There is no need for manual sorting of defective parts, which facilitates production yield statistics and centralized rework of defective products.

[0019] 7. This invention achieves fully automated closed-loop assembly of double-layer bearings through the coordinated operation of the cage feeding mechanism, cage transfer mechanism, ball supply mechanism, ball adding mechanism, flipping mechanism, inner ring transfer mechanism, outer ring transfer mechanism, assembly mechanism, weighing mechanism, demagnetizing mechanism, and discharge mechanism. The servo motors, cylinders, and sensors of each process operate in a sequential and continuous manner, improving assembly capacity and reducing labor costs. At the same time, the fully automated operation eliminates various assembly defects caused by manual operation, and steadily improves the product processing qualification rate and assembly consistency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the small retainer feeding side structure of the present invention; Figure 2 This is a schematic diagram of the large cage loading side structure of the present invention; Figure 3 This is a top view of the frame structure of the present invention; Figure 4 This is a schematic diagram of the cage feeding mechanism of the present invention; Figure 5 This is a schematic diagram of the material tray and hopper structure of the present invention; Figure 6 This is a schematic diagram of the lifting mechanism structure of the present invention; Figure 7 This is a schematic diagram of the cage transfer mechanism of the present invention; Figure 8 This is a schematic diagram of the elastic gripper structure of the present invention; Figure 9 This is a schematic diagram of the material transfer mechanism of the present invention; Figure 10 This is a schematic diagram of the ball supply mechanism of the present invention; Figure 11This is a schematic diagram of the quantitative conveying mechanism of the present invention; Figure 12 This is a schematic diagram of the cross-sectional structure of the spherical compartment of the present invention; Figure 13 This is a front view schematic diagram of the ball-adding mechanism of the present invention; Figure 14 This is a rear view schematic diagram of the ball-adding mechanism of the present invention; Figure 15 This is a schematic cross-sectional view of the ball-adding mechanism of the present invention; Figure 16 This is a schematic diagram of the flipping mechanism structure of the present invention; Figure 17 This is a schematic diagram of the outer ring conveying mechanism of the present invention; Figure 18 This is a schematic diagram of the assembly mechanism structure of the present invention; Figure 19 This is a schematic diagram of the weighing mechanism of the present invention; Figure 20 This is a schematic diagram of the demagnetizing mechanism of the present invention; Figure 21 This is a schematic diagram of the NG collection channel structure of the present invention; Figure 22 This is a schematic diagram of the second belt conveyor structure of the present invention; Figure 23 This is a schematic diagram of the exploded structure of the TBB bearing produced by this invention.

[0021] In the diagram: 1. Cage feeding mechanism; 101. Material tray / hopper; 1011. Rotary table; 1012. Lifting plate; 1013. Sleeve rod; 1014. First rotary motor; 102. Lifting mechanism; 1021. Lifting bracket; 1022. Conveyor belt; 1023. Clearance hole; 1024. Second motor; 1025. Slider; 1026. First guide rail; 103. Cage transfer mechanism; 1031. 1032. First vertical rod; 1033. Horizontal moving module; 1034. First cylinder; 1035. Elastic gripper; 10346. Support bracket; 10347. Gripper fixing seat; 10348. Grip rod; 10349. Grip arm; 10340. Arc-shaped gripping end; 10341. Limiting cover; 10342. Guide rod; 10343. Return spring; 10344. Pad; 10345. Fourth cylinder; 2. Cage transfer mechanism; 21. Transfer mechanism; 211. Second moving module; 212. Mounting plate; 213. Second cylinder; 214. First support frame; 215. Push plate; 22. Transfer plate; 23. First belt conveyor; 3. Ball feeding mechanism; 31. Support plate; 32. First bracket; 33. Second bracket; 34. Push cylinder; 35. Connecting plate; 36. Ball feeding block; 37. Feeding channel; 38. Ball feeding head; 39. Ball outlet hole; 310. Second rotary motor; 4. Tilting mechanism; 41. Second support frame; 42. First rotary cylinder; 43. Rotating bracket; 44. Clamping cylinder; 45. Clamping plate; 46. Protrusion; 5. Ball supply mechanism; 51. Ball compartment; 511. Storage chamber; 512. Ball lifting plate; 513. Third cylinder; 514. Oil receiving tray; 515. Connecting rod; 52. Quantitative conveying mechanism; 521. Clamping plate; 522. Lower ball block; 523. Feeding base plate; 524. Servo moving mechanism; 525. Adapter plate; 526. Lower ball tube; 53. Counting sensor; 54. Feeding pipeline; 6. Outer ring transmission mechanism; 61. Second belt conveyor; 62. Outer ring handling mechanism; 621. First electric telescopic rod; 622. Third moving module; 623. First mounting base; 624. First clamping cylinder; 625. Clamping block; 7. Inner ring transmission mechanism; 8. Assembly mechanism; 81. Fourth moving module; 82. Second electric push rod; 83. Second mounting bracket; 84. First support plate; 85. Second clamping cylinder; 86. Chuck; 87. Second rotary cylinder; 88. Second support plate; 89. First gripper; 9. Discharge mechanism; 91. Third belt conveyor; 92. NG collection channel; 921. Second vertical rod; 10. Demagnetizing mechanism; 121. Demagnetizing box; 122. Pushing assembly; 1221. L-shaped plate; 1222. Bearing plate; 1223. Pushing block; 1224. Third support plate; 1225. Pushing cylinder; 1226. Connecting bracket; 11. Weighing mechanism; 111. Weighing platform; 112. Gravity sensor; 113. Sensing plate; 12. Blocking block; 13. Baffle; 14. V-shaped opening. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] This invention provides, for example Figure 1-23The TBB double-layer bearing assembly shown includes a frame, and two sets of cage feeding mechanisms 1, two sets of cage transfer mechanisms 2, a ball supply mechanism 5, a ball adding mechanism 3, a flipping mechanism 4, an inner ring transfer mechanism 7, an outer ring transfer mechanism 6, an assembly mechanism 8, a weighing mechanism 11, a demagnetizing mechanism 10, and a discharge mechanism 9 mounted on the frame. The two sets of cage feeding mechanisms 1 store the large cage and the small cage respectively, and elastically and adaptively transfer the large cage and the small cage in separate zones. like Figure 4 As shown, the cage feeding mechanism 1 includes a lifting mechanism 102, a cage transfer mechanism 103, and a material tray hopper 101 for storing large and small cages. The material tray hopper 101 uses a column-type sleeve rod 1013 for storage. The lifting mechanism 102 is installed on one side of the material tray hopper 101 for lifting and feeding the cages stored in the material tray hopper 101. The cage transfer mechanism 103 is installed on the other side of the material tray hopper 101 for transferring the lifted cages to the cage transfer mechanism 2 for directional transmission. Specifically, such as Figure 5 As shown, the material tray hopper 101 includes a rotary table 1011 mounted on a frame. Multiple sleeve rods 1013 for attaching storage holders are fixed at equal angles on the rotary table 1011. Lifting plates 1012 are slidably fitted onto the sleeve rods 1013. The lifting plates 1012 gradually lift the holders at the bottom of the sleeve rods 1013, facilitating the loading of the holders. The rotary table 1011 is driven by a first rotary motor 1014. During holder storage, the holders are fitted onto each sleeve rod 1013 in a fixed direction. When all holders on a sleeve rod 1013 are removed, the first rotary motor 1014 drives the rotary table 1011 to rotate, moving the next sleeve rod 1013 to the lifting mechanism 102. The lifting mechanism 102 then drives the lifting plate 1012 to gradually rise, allowing the holders on the sleeve rods 1013 to be loaded one by one onto the holder transfer mechanism 103. like Figure 6As shown, the lifting mechanism 102 includes a lifting bracket 1021. Drive wheels are rotatably mounted at both ends of the lifting bracket 1021, and a conveyor belt 1022 is sleeved on each drive wheel. One end of one of the drive wheels is driven by a second motor 1024. The base of the second motor 1024 is mounted on the upper end of the lifting bracket 1021. A slider 1025 is fixed to one side of the conveyor belt 1022, and one side of the slider 1025 is slidably connected to the lifting bracket 1021. A first guide rail 1026 is provided on the lifting bracket 1021 for the slider 1025 to slide on. The slider 1025 is provided with a clearance hole 1023 for moving and avoiding the other side of the conveyor belt 1022. One end of the slider 1025 is located below the lifting plate 1012. The second motor 1024 drives the conveyor belt 1022 to move through the transmission wheel, so that the conveyor belt 1022 drives the slider 1025 to move up or down in a reciprocating motion. While moving, the slider 1025 pushes the lifting plate 1012 to rise or fall, so as to gradually lift the retainer on the sleeve rod 1013 until the retainer on the sleeve rod 1013 is fully loaded. Then the slider 1025 falls back to the lower end of the lifting bracket 1021.

[0024] like Figure 7 As shown, the retainer transfer mechanism 103 includes a first vertical rod 1031. A horizontal moving module 1032 is fixed to the upper end of the first vertical rod 1031. A first cylinder 1033 is installed on the moving platform of the horizontal moving module 1032. An elastic gripper 1034 is installed at the piston rod end of the first cylinder 1033 for gripping the upper retainer of the sleeve rod 1013. The gripped retainer is moved horizontally to above the retainer transfer mechanism 2 by the horizontal moving module 1032. Then, the gripped retainer is placed on the retainer transfer mechanism 2 by the first cylinder 1033, so that the retainer transfer mechanism 2 can be used for directional transfer.

[0025] Specifically, such as Figure 8 As shown, the elastic gripper 1034 includes an elastic clamping mechanism and a support mechanism located below the elastic clamping mechanism. The support mechanism is connected to the moving platform of the horizontal moving module 1032 through the support bracket 10341, so that the horizontal moving module 1032 synchronously drives the elastic clamping mechanism and the support mechanism to move synchronously. The support mechanism is used to clamp and fix the retainer to be transplanted on the sleeve rod 1013, so that the elastic clamping mechanism only applies downward pressure to the retainer fixed by the support mechanism, without affecting the other retainers on the sleeve rod 1013. The elastic clamping mechanism is driven to move downward by the first cylinder 1033 to grab the retainer clamped on the support mechanism. With the cooperation of the elastic clamping mechanism and the support mechanism, it is easy to insert the retainers on the sleeve rod 1013 one by one into the elastic clamping mechanism. The elastic clamping mechanism includes a jaw fixing seat 10342, which is fixed to the piston rod end of the first cylinder 1033. Multiple sets of clamping arms 10344 are arranged in a circular array at the bottom center of the jaw fixing seat 10342. The clamping arms 10344 extend vertically downwards, forming an elastic cantilever structure with a converging lower end and an open upper end. Each set of clamping arms 10344 has an integrally formed arc-shaped clamping end 10345 on its lower inner side. The arc of the arc-shaped clamping end 10345 matches the contour of the outer ring of the bearing cage, allowing it to conform to the outer wall of the cage for circumferential clamping. A limit cover 10346 is provided above the jaw fixing seat 10342. The edge of the gripper fixing seat 10342 is slidably inserted with a guide rod 10347 at equal angles. The upper end of the sleeve rod 1013 passes through the gripper fixing seat 10342 and is fixed to the lower surface of the limiting cover 10346. The lower end of the guide rod 10347 is fixed with a pad 10349. A return spring 10348 is sleeved on the outer wall of the guide rod 10347 located between the pad 10349 and the gripper fixing seat 10342. The guide rod 10347 and the clamping arm 10344 are offset to facilitate the use of the reaction force of the retainer to push the pad 10349 upward and compress the return spring 10348. The return spring 10348 can prevent the retainer from making hard contact with the pad 10349. The support mechanism includes a fourth clamping cylinder 103410, which is mounted on the support bracket 10341. The clamping end of the fourth clamping cylinder is fixed with a clamping rod 10343. The clamping rod 10343 is driven to move relative to the fourth clamping cylinder to clamp and fix the retainer on the sleeve rod 1013. In the initial state, the multiple clamping arms 10344 are in a naturally retracted state, and the clamping hole formed by the arc-shaped clamping ends 10345 is slightly smaller than the outer diameter of the outer ring of the cage. When it is necessary to grasp the cage, the first cylinder 1033 drives the overall elastic gripper 1034 to move vertically downward, so that the arc-shaped clamping ends 10345 contact the upper end face of the outer ring of the cage and continue to press down. The cage generates a radially outward pushing force on the multiple clamping arms 10344, forcing the clamping arms 10344 to elastically open and deform, so that the cage can be smoothly inserted into the clamping area surrounded by the multiple clamping ends. Once the retainer is fully in the clamping position, the clamping arm 10344 tightens inward under its own elastic restoring force, causing the inner arc-shaped clamping end 10345 to tightly press against the outer wall of the retainer. The retainer is self-adaptive elastically gripped and fixed by the elastic pre-tightening force. At the same time, the upper end of the retainer contacts the pad 10349, which protects the retainer and prevents it from being scratched. After gripping, the first cylinder 1033 drives the elastic gripper 1034 and the clamped retainer to move upward as a whole, thus completing the gripping, lifting and subsequent transfer process of the retainer. Flexible clamping is achieved through the elastic deformation of the elastic gripping arm 10344. Compared with a rigid clamping structure, this effectively avoids cage deformation and scratches caused by rigid compression during the gripping process, ensuring the cage's appearance and assembly accuracy. In addition, multiple sets of arc-shaped gripping ends 10345 provide ring-shaped clamping, resulting in uniform clamping force and good positioning and centering, which can effectively prevent cage offset and shaking during gripping, ensuring the alignment accuracy of subsequent ball loading and assembly processes. Furthermore, the elastic gripper 1034 has self-adaptive capability, which can be compatible with gripping cages of the same specification within a certain outer diameter tolerance range. It can be adapted to continuous automated gripping operations on the production line, effectively improving the cage loading and transfer efficiency and equipment operation stability.

[0026] By setting up two sets of material trays and hoppers 101, and placing the two sets of material trays and hoppers 101 side by side, each set of material trays and hoppers 101 corresponds to a set of lifting mechanism 102 and cage transfer mechanism 103, so that the large cage and small cage in the TBB bearing can be loaded synchronously in sections.

[0027] Two sets of cage transfer mechanisms 2 are respectively installed on one side of the cage feeding mechanism 1 to automatically transfer the large and small cages obtained from transplanting. Specifically, such as Figure 1-2 As shown, the cage transfer mechanism 2 includes a transfer plate 22 and a transfer mechanism 21. One end of the transfer plate 22 is located directly below the cage transfer mechanism 103. The ball-adding mechanism 3 and the flipping mechanism 4 are both located on the same side of the other end of the transfer plate 22. A first belt conveyor 23 is provided at the other end of the transfer plate 22. The transmission direction of the first belt conveyor 23 is perpendicular to the transmission direction of the transfer plate 22. The transfer mechanism 21 is installed on the other side of the transfer plate 22 and is used to move the cage on the transfer plate 22.

[0028] like Figure 9 As shown, the material transfer mechanism 21 includes a second moving module 211, on which a mounting plate 212 is mounted. A second cylinder 213 is mounted on the mounting plate 212. A first support frame 214 is mounted on the piston rod end of the second cylinder 213. A plurality of push plates 215 are fixed on the first support frame 214. One side of the push plate 215 has an arc-shaped opening for matching with the retainer. The second moving module 211 drives the mounting plate 212 and the second cylinder 213 to move the position, moving the push plate 215 to the position of the retainer to be moved on the transfer plate 22. Then, the second cylinder 213 pushes the push plate 215 closer to the retainer, so that the arc-shaped opening matches the retainer. Then, the second moving module 211 drives the push plate 215 to move horizontally, moving the retainer to the next station, which facilitates the automated movement of the retainer. Each cage transfer mechanism corresponds to a set of transfer plates 22 and a transfer mechanism 21. The two sets of transfer plates 22 transfer the large cage and the small cage respectively, achieving the effect of synchronous transfer of the large cage and the small cage in sections. The number of push plates on the transfer mechanism 21 for transferring the large cage and the small cage is installed according to the actual transfer length and the requirements of the transfer station. The length of the push plates installed on the first support frame 214 can be different, and the number of arc-shaped openings they have can also be different. The ball supply mechanism 5 is located above the cage feeding mechanism 1, and supplies steel balls to the large cage and small cage in two independent streams. Specifically, such as Figure 10-12 As shown, the ball supply mechanism 5 includes a ball chamber 51 and a quantitative conveying mechanism 52 installed below the ball chamber 51. The ball chamber 51 is equipped with a ball pushing mechanism for pushing steel balls out of the ball chamber 51. A feeding pipe 54 is connected to one side of the ball chamber 51. A counting sensor 53 is installed on the feeding pipe 54. The output end of the quantitative conveying mechanism 52 is connected to the ball adding mechanism 3. The feed end of the quantitative conveying mechanism 52 is connected to the discharge end of the feeding pipe 54. The counting sensor 53 counts the number of steel balls flowing out of the ball chamber 51 in real time. Then, the quantitative conveying mechanism 52 conveys the number of steel balls that match the number of cage filling positions to the ball adding mechanism 3.

[0029] Specifically, such as Figure 10 As shown, the feeding pipe 54 is transparent. The counting sensor 53 is a U-shaped photoelectric switch sensor. The U-shaped structure of the U-shaped photoelectric switch sensor is clamped on the outer wall of the feeding pipe 54. The transmitter and receiver of the photoelectric switch are located on both sides of the U-shaped groove, forming a fixed optical axis. When the steel ball falls from the pipe, the steel ball blocks the light beam, the light signal of the receiver changes, and the switch signal is output. This method is used to monitor the number of steel balls passing through the feeding pipe 54.

[0030] The ball chamber 51 is provided with multiple storage cavities 511, and each storage cavity 511 is equipped with a corresponding ball pushing mechanism. Each storage cavity 511 has a feeding pipe 54 on its upper side wall. When the steel balls in one storage cavity 511 are used up, they are transferred to another storage cavity 511 for feeding, so that the ball supply can be continuous and facilitates automated feeding.

[0031] Specifically, such as Figure 12As shown, the ball pushing mechanism includes a ball lifting plate 512 slidably installed in the storage cavity 511. A third cylinder 513 is installed at the lower end of the push plate 215. An oil receiving tray 514 is provided below the third cylinder 513. The oil receiving tray 514 is connected to the lower end of the ball chamber 51 through a connecting rod 515. The third cylinder 513 drives the ball lifting plate 512 to rise, so that the ball lifting plate 512 pushes the steel ball from the feeding pipe 54 to the quantitative conveying mechanism 52. In order to avoid friction between adjacent steel balls, anti-rust oil and lubricating oil will be attached to the surface of the steel ball. When the ball lifting plate 512 lifts the steel ball, the oil film on the surface of the steel ball is squeezed and scraped off. The oil flows down along the steel ball and the inner wall of the chamber, and gathers at the bottom of the ball chamber 51. The lubricating and anti-rust oil dripping from the surface of the steel ball through the oil receiving tray 514 avoids oil pollution of the transmission and pneumatic components and extends the service life of the mechanism. like Figure 11 As shown, the quantitative conveying mechanism 52 includes a clamping plate 521 and a fixed base plate. A feeding base plate 523 is fixed on the fixed base plate, and two lower ball tubes 526 are inserted into the feeding base plate 523. The lower ends of the two lower ball tubes 526 are respectively connected to the ball feeding mechanisms 3 on both sides for conveying steel balls to the small cage and the large cage. A servo moving mechanism 524 is fixed on the fixed base plate, and a transition plate 525 is installed on the moving platform of the servo moving mechanism 524. A connecting plate 525 is fixed on the transition plate 525. The ball tube 526 corresponds to a number of lower ball blocks 522. Each lower ball block 522 has a quantitative receiving cavity. The number of steel balls stored in the quantitative receiving cavity is the same as the number of balls required to be added to the large and small cages. The clamping plate 521 clamps multiple transfer tubes. The number of transfer tubes is the same as the number of feeding pipes 54. The upper end of each transfer tube is connected to the lower end of the feeding pipe 54. The lower end of the transfer tube is flush with the lower end of the clamping plate 521. Both the upper and lower ends of the quantitative receiving cavity are provided with connecting holes. For example, the ball chamber 51 has six storage cavities 511, each connected to a feeding pipe 54. Each feeding pipe 54 connects to a transmission pipe, which is numbered 1, 2, 3, 4, 5, and 6. Pipes 1, 2, and 3 correspond to the lower ball block 522 (named the left lower ball block 522) connected to the small cage ball feeding mechanism 3, while pipes 4, 5, and 6 correspond to the lower ball block 522 (named the right lower ball block 522) connected to the large cage ball feeding mechanism 3. During ball feeding, a servo moving mechanism 524 drives the adapter plate 525 to move, causing the left lower ball block 522 to move to the lower end of transmission pipe 1. At this time, the connecting hole at the lower end of the quantitative receiving cavity is fed by the feeding base plate. 523 is blocked and not connected to the lower ball tube 526. The steel ball in the storage cavity 511 corresponding to position 1 enters the quantitative receiving cavity of the lower ball block 522 on the left through the connecting hole. Then, the lower ball block 522 on the right is moved to the lower end of the transmission tube 4. At this time, the connecting hole at the lower end of the quantitative receiving cavity is blocked by the feeding bottom plate 523. The steel ball in the storage cavity 511 corresponding to position 4 enters the quantitative receiving cavity of the lower ball block 522 on the right through the connecting hole. When feeding balls to the ball feeding mechanism 3, the lower ball block 522 on the left and the lower ball block 522 on the right are moved to the lower ball tube 526 by the servo moving mechanism 524, so that the lower end of the quantitative receiving cavity is connected to the lower ball tube 526, and the upper end of the quantitative receiving cavity is not connected to the transmission tube. This method allows for the separate quantitative dispensing of small and large balls, preventing issues such as mixing of different sizes of steel balls or incorrect supply to the corresponding cages. It is suitable for situations where two different sizes of cages are installed on the same equipment. During ball dispensing, the upper and lower channels are not connected simultaneously during dispensing to prevent lead balls from continuously falling from above during the unloading process. If one of the storage chambers 511 is short of balls or malfunctions, it can be switched to another storage chamber 511 of the same specification to supply balls, achieving continuous feeding without stopping the machine and facilitating material management.

[0032] The ball feeding mechanism 3 is located on one side of the cage transfer mechanism 2, receives the steel balls transferred by the ball supply mechanism 5, and presses the steel balls one by one into the cage; like Figure 13-15As shown, the ball-adding mechanism 3 includes a support plate 31 and a first bracket 32. The support plate 31 is embedded in the transmission plate 22 in the cage transmission mechanism 2. The lower end of the support plate 31 is fixed to the upper surface of the frame via a second bracket 33. The lower end of the first bracket 32 ​​is fixed to the upper surface of the frame. A push cylinder 34 is fixed to the upper end of the first bracket 32. A connecting plate 35 is fixed to the piston rod end of the push cylinder 34, and the connecting plate 35 is slidably connected to the first bracket 32. A ball-adding block 36 is rotatably connected to one end of the connecting plate 35. A feeding channel 37 is provided inside the ball-adding block 36. A ball-adding head 38 is rotatably connected to the upper end of the feeding channel 37. The ball-adding head 38 is connected to the lower end of the lower ball tube 526. The lower end of the feeding channel 37 is provided with a ball outlet hole 39 that matches the filling position of the retainer. The other end of the connecting plate 35 is equipped with a second rotary motor 310 for driving the ball adding block 36 to rotate. The output shaft of the second rotary motor 310 and the outside of the ball adding block 36 are both fitted with transmission wheels. The two transmission wheels are fitted with transmission belts. The first bracket 32 ​​is provided with a sliding hole for the transmission belt to move. When adding balls, the ball adding block 36 and the rotary motor are moved down as a whole by pushing the cylinder 34. The ball adding block 36 applies pressure to the retainer located on the support plate 31 so that the retainer can remain stationary. The ball adding block 36 is driven to rotate by the rotary motor so that the outlet hole moves circumferentially along the retainer to add balls to the ball adding positions of the retainer one by one. The cage transfer mechanism 2 is only responsible for delivering the cage to its position. During the ball loading operation, the transfer plate 22 does not need to continuously clamp and position the cage, eliminating the problem of cage movement, overturning, or tilting caused by the reaction force generated when the steel ball is pressed in. It avoids defects such as steel ball misalignment, ball jamming, cage deformation, and missing steel balls caused by cage displacement. Moreover, the working mode of fixing the cage and rotating the ball loading block 36 only requires one ball loading channel to complete the steel ball loading at all points along the circumference of the cage in sequence, eliminating multiple independent ball pressing units, simplifying the mechanical structure, reducing the size of the mechanism, and reducing the equipment manufacturing cost. The second rotary motor 310 drives the ball loading block 36 to rotate through the synchronous belt, which can accurately control the alignment of the ball outlet 39 with each ball loading station of the cage. The steel ball is pressed into the cage pocket in the vertical direction, the assembly force is stable, the steel ball collision and cage deformation are reduced, and the steel ball loading accuracy and product consistency are improved.

[0033] The flipping mechanism 4 is located on one side of the ball-adding mechanism 3, and flips the cage filled with steel balls for return transport. Specifically, such as Figure 16As shown, the flipping mechanism 4 includes a second support frame 41 mounted on the frame. A first rotary cylinder 42 is mounted on the upper end of the second support frame 41. A rotary bracket 43 is mounted on the rotating end of the first rotary cylinder 42. A clamping cylinder 44 is mounted on the rotary bracket 43. A clamping plate 45 is mounted on the clamping end of the clamping cylinder 44. The clamping surface of the clamping plate 45 is provided with a protrusion 46. The conveying plate 22 in the retainer conveying mechanism 2 is provided with a notch so that the lower clamping plate 45 is flush with the surface of the conveying plate 22 when not clamped. During flipping, the retainer is moved to the lower clamping plate by the material transfer mechanism 21. On plate 45, the clamping cylinder 44 drives the clamping plate 45 to move relative to each other, so that the clamping plates 45 on both sides clamp and fix the cage. Then, the first rotating cylinder 42 drives the rotating bracket 43 to rotate 180° to flip the cage. Then, the flipped cage is placed back on the clamping plate 45 that is flush with the transfer plate 22. Then, the material transfer mechanism 21 moves the flipped cage to return it to the transfer plate 22 for transmission. This is adapted to the special process requirements of the step-by-step pre-assembly of the double-layer bearing double-sided raceway, which facilitates the automated processing of the double-layer bearing flipping process without the need for manual material flipping.

[0034] The inner ring transfer mechanism 7 is used for the directional transfer of the inner ring to be assembled; the structure of the inner ring transfer mechanism 7 is the same as that of the cage transfer mechanism 2, specifically, as follows: Figure 3 As shown, the inner ring transfer mechanism 7 includes a transfer plate 22 and a material transfer mechanism 21. One end of the transfer plate 22 is flush with the edge of the frame and is used to place the inner ring on the transfer plate 22 by a robot arm. The material transfer mechanism 21 is installed on one side of the transfer plate 22, and the other end of the transfer plate 22 extends to the demagnetizing mechanism 10. The material transfer mechanism 21 mainly consists of a second moving module 211, a mounting plate 212, a second cylinder 213, a first support frame 214, and a push plate 215. The push plate 215 has an arc-shaped opening. The second moving module 211 drives the mounting plate 212 and the second cylinder 213 to move the push plate 215 to the inner ring to be transferred. Then, the second cylinder 213 pushes the push plate 215 closer to the inner ring so that the arc-shaped opening matches the inner ring. Then, the second moving module 211 drives the push plate 215 to move horizontally to move the inner ring to the next station. The outer ring transmission mechanism 6 directionally transmits the outer ring to be assembled; such as Figure 3 As shown, the outer ring conveying mechanism 6 includes a second belt conveyor 61 and an outer ring transporting mechanism 62. The outer ring transporting mechanism 62 is used to grab the outer ring onto the transport plate 22 of the inner ring conveying mechanism 7 and fit it onto the outside of the inner ring. The installation direction of the second belt conveyor 61 is perpendicular to the installation direction of the first belt conveyor 23, as shown. Figure 17As shown, the outer ring conveying mechanism 62 includes a first electric telescopic rod 621 mounted on the surface of the frame. A third moving module 622 is mounted on the telescopic end of the first electric telescopic rod 621. A first mounting base 623 is mounted on the moving platform of the third moving module 622. A first clamping cylinder 624 is mounted on the first mounting base 623. A clamping block 625 is mounted on the clamping end of the first clamping cylinder 624. The first electric telescopic rod 621 drives the third moving module 622 and the first mounting base 623 to rise or fall, so that the clamping block 625 can be moved relative to each other by the first clamping cylinder 624, thereby clamping the inner ring on the second belt conveyor 61 to rise and fall. The third moving module 622 drives the clamped inner ring to move onto the transmission plate 22 of the inner ring transmission mechanism 7.

[0035] The assembly mechanism uses an 8-step process to grip the large and small cages and attach them to the inner ring to form a double-layered assembly. like Figure 18 As shown, the assembly mechanism 8 includes a fourth moving module 81. Second electric push rods 82 are mounted at both ends of the fourth moving module 81. The lower ends of the second electric push rods 82 are fixed to the frame. Two second mounting brackets 83 are mounted on the moving platform of the fourth moving module 81. A first support plate 84 is slidably connected to the second mounting bracket 83. A second clamping cylinder 85 is mounted at the lower end of the first support plate 84 of one of the second mounting brackets 83. A chuck 86 is mounted at the clamping end of the second clamping cylinder 85. Through the cooperation of the fourth moving module 84 and the second electric push rods 82, the position of the chuck 86 in the X and Y directions is adjusted to transport the large retainer transmitted on the transmission plate 22 to the inner ring transmission mechanism 7 and fit it with the inner ring on the transmission plate 22. A second rotary cylinder is mounted at the lower end of the first support plate 84 of the other second mounting bracket 83. 87. A second support plate 88 is installed on the rotating end of the second rotary cylinder 87. Since the transmission direction of the first belt conveyor 23 is perpendicular to the transmission direction of the inner ring transmission mechanism 7, the second rotary cylinder 87 grabs the small retainer with steel balls and rotates it so that the small retainer is above the inner ring. Then, the second electric push rod 82 drives the fourth moving module 81 to move down and fit the small retainer on the outside of the inner ring. A third clamping cylinder is fixed to one end of the second support plate 88. The clamping end of the third clamping cylinder is fixed with a first gripper 89, which is used to transport the small retainer transmitted on the first belt conveyor 23 to the inner ring transmission mechanism 7 and fit it with the inner ring on the transmission plate 22. A chain rail is installed on one side of the fourth moving module 81. One end of the chain rail is connected to the moving platform of the fourth moving module 81 to ensure the stability of the movement of the moving platform of the fourth moving module 81.

[0036] The second clamping cylinder 85 and the third clamping cylinder operate asynchronously. The assembly process of the large cage and the small cage with the inner ring is as follows: First, the large cage is transported to the top of the inner ring by the second clamping cylinder 85 and then fitted. Then, the small cage is clamped by the third clamping cylinder and rotated to the top of the inner ring by the second rotating cylinder 87. Finally, the small cage is fitted onto the inner ring, so that the lower layer of the inner ring has the large cage and the upper layer of the inner ring has the small cage. Weighing mechanism 11 determines the leakage of balls by weight comparison, and qualified balls are linked to outer ring transmission mechanism 6 to complete the initial assembly; like Figure 19 As shown, the weighing mechanism 11 includes a weighing platform 111, which is located below the transmission plate 22 of the inner ring transmission mechanism 7. A gravity sensor 112 is provided on the upper surface of the weighing platform 111, and a sensing plate 113 is provided on the upper surface of the weighing platform 111. The sensing plate 113 is slidably inserted into the weighing platform 111 via a plug rod. The gravity sensor 112 is located between the weighing platform 111 and the sensing plate 113. The transmission plate 22 of the inner ring transmission mechanism 7 has a clearance hole 1023 for exposing the sensing plate 113. The demagnetizing mechanism 10 grabs the tested assembly and then places the assembly on the sensing plate 113. The gravity sensor 112 senses the weight of the assembly in real time. By comparing the real-time detected weight with the preset assembly weight, it is determined whether there is a missing ball in the assembly. That is, if the real-time weight is lower than the preset assembly weight, it is determined that there is a missing ball in the assembly. If the real-time weight is within the preset assembly weight range, it is determined that the assembly is qualified. For qualified assemblies at the weighing station, the outer ring of the second belt conveyor 61 is transported to the assembly by the outer ring transport mechanism 62 and fitted onto the assembly. The first electric telescopic rod 621 applies downward pressure to the outer ring to initially fit the outer ring and the assembly. The material transfer mechanism 21 of the inner ring transport mechanism 7 moves the finished product after initial fitting at the weighing station to the next station. Then, the fourth moving module 81 is moved down as a whole, and the first gripper 89 applies pressure to the finished product after initial fitting to complete the fitting and obtain the finished bearing that has passed the weighing.

[0037] The demagnetizing mechanism 10 is used to pick up the outer ring and the initially assembled parts from the outer ring transmission mechanism 6, assemble them, and complete the demagnetizing operation. like Figure 20As shown, the demagnetizing mechanism 10 includes a demagnetizing box 121 and a pushing assembly 122. The demagnetizing box 121 is open on both sides. The pushing assembly 122 is located on one side of the demagnetizing box 121, and the discharge mechanism 9 is located on the other side of the demagnetizing box 121. After demagnetization, the demagnetized bearing is pushed onto the discharge mechanism 9 by the pushing assembly 122 for discharge. The demagnetizing box 121 contains a gantry-type demagnetizing module. This gantry-type demagnetizing module is based on the principle of alternating gradient decaying magnetic field. The excitation coil forms a gantry frame to create a through-type alternating magnetic field. The bearing follows the pushing assembly... The pusher assembly 122 moves at a constant speed through the gantry frame, first disturbing the ordered magnetic domains inside the workpiece under a high-intensity alternating magnetic field. Then, as the workpiece moves away from the coil, the external magnetic field strength continuously decreases to zero, effectively eliminating residual magnetism generated during the processing and assembly of bearing rings and steel balls. The closed frame structure of the gantry ensures a uniform magnetic field distribution around the bearing, avoiding insufficient demagnetization of ring-shaped workpieces in certain areas. The conveying route of the pusher assembly 122 runs straight through the gantry channel, enabling seamless connection with the upstream cage assembly process and achieving automated continuous online demagnetization. At the same time, the magnetic field leakage is smaller, reducing the interference of the alternating magnetic field on the production line's electrical control components. The pushing assembly 122 is used to push the finished bearings on the transmission plate 22 in the inner ring transmission mechanism 7 into the demagnetizing box 121 to complete the demagnetization operation. Simultaneously, it pushes the defective bearings (NG) into the NG collection channel 92, achieving layered pushing. The pushing assembly 122 includes a lifting cylinder and an L-shaped plate 1221. The telescopic end of the lifting cylinder passes through the transmission plate 22 in the inner ring transmission mechanism 7 and is fixed to a support plate 1222. When the lifting cylinder is not extended, the support plate 1222 is flush with the surface of the transmission plate 22 in the inner ring transmission mechanism 7, facilitating the movement of the components on the transmission plate 22 onto the support plate 1222. A third support plate 1224 is fixed to the upper end of the L-shaped plate 1221. The third support plate 1224 has a through hole for the support plate 1222 to pass through, facilitating the lifting cylinder to drive the support plate 1222 upwards and to connect with the third support plate 1222. The surface of the support plate 1224 is flush to distribute NG products onto the third support plate 1224. Push blocks 1223 are provided on one side of the third support plate 1224 and the vertical side of the L-shaped plate 1221. A pushing cylinder 1225 is fixed on one side of the push block 1223. The mounting end of the pushing cylinder 1225 is fixed to the upper surface of the frame through the connecting bracket 1226. The lower push block 1223 is used to push the bearing located on the carrier plate 1222 into the demagnetizing box 121 for demagnetization. After demagnetization, the bearing is pushed onto the third belt conveyor 91 for discharge. The lifting cylinder is used to drive the carrier plate 1222 to rise, so that the carrier plate 1222 carries the weighed and detected NG products to the third support plate 1224. Then, the upper push block 1223 pushes the weighed NG products into the NG collection channel 92 to achieve the purpose of discharging materials in sections according to the weighing results.

[0038] The discharge mechanism 9 is used for the discharge of demagnetized finished products and defective products detected by leakage ball detection in designated areas; The discharge mechanism 9 includes a third belt conveyor 91 and an NG collection channel 92, such as Figure 21 As shown, the NG collection channel 92 is L-shaped, and the corners of the NG collection channel 92 are arc angles. Multiple second vertical rods 921 are fixed on the lower surface of the NG collection channel 92. The lower ends of the second vertical rods 921 are fixed to the upper surface of the frame. The feed end of the NG collection channel 92 is aligned with the third support plate 1224, which facilitates pushing the weighed defective products on the third support plate 1224 into the NG collection channel 92. The third belt conveyor 91 is installed on the other side of the demagnetizing box 121 and is used to transport and discharge the demagnetized finished products.

[0039] The first belt conveyor 23 and the second belt conveyor 61 are provided with blocking blocks 12 on the discharge end surfaces. The blocking blocks 12 are provided with V-shaped openings 14 on the side near the cage. The V-shaped openings 14 are used to guide and position the cage and the outer ring, so that the cage and the outer ring can move to the middle position of the conveyor belt through the inclined surface of the V-shaped openings 14. The first belt conveyor 23 and the second belt conveyor 61 are provided with baffles 13 on opposite sides. The baffles 13 are used to guide the cage and the outer ring on the conveyor belt to prevent the cage and the outer ring from detaching from the conveyor belt during transmission.

[0040] It should be noted that the horizontal moving module 1032, servo moving mechanism 524, second moving module 211, third moving module 622, and fourth moving module 81 all adopt a screw drive structure to achieve precise translation drive. The screw drive structure mainly consists of a servo motor, coupling, ball screw pair, linear guide rail, moving slide, and base. The servo motor is fixed to one side of the module base, and its output shaft is coaxially fixed to the ball screw through the coupling. The ball screw is rotatably assembled inside the base. A linear guide rail is fixedly installed on the base, and a moving platform is slidably assembled on the linear guide rail. The moving platform and the ball screw are connected to the ball screw. The ball screw and ball nut are rigidly fixed, and the moving parts are mounted on the moving platform. During operation, the servo motor receives commands from the control system and outputs rotational power, which drives the ball screw to rotate synchronously through the coupling. The rotational motion of the screw is converted into the linear motion of the ball nut by the ball screw pair. At the same time, the moving platform is guided and limited by the linear guide rail, which restricts the rotational freedom of the moving platform, so that it can only make smooth linear sliding in the horizontal direction. By controlling the number of rotations, speed and direction of rotation of the servo motor, the moving stroke, moving speed and moving direction of the moving platform can be precisely controlled.

[0041] During operation, after the equipment starts, each mechanism completes a reset and self-check. The two sets of cage feeding mechanisms 1 automatically stack and supply large and small cages respectively. The cages are flexibly gripped by the elastic grippers 1034 and transferred to the cage transfer mechanism 2. The ball supply mechanism 5 delivers the balls to the ball adding mechanism 3 through two independent channels. The ball supply mechanism 5 stores steel balls of different specifications in multiple storage chambers 511. After being accurately dispensed by the counting sensor 53 and the quantitative receiving chamber, the two pipelines deliver a quantitative amount of steel balls to the corresponding cages. The ball adding mechanism 3 locks and fixes the cages, and the rotating ball adding block 36 presses the steel balls into the cages in a circumferential direction. After the balls are filled, the transfer mechanism 21 sends the cages to the flipping mechanism 4, where they are clamped and flipped 180° before being returned to the transfer mechanism. On plate 22, the inner and outer rings are directionally conveyed to their positions via the inner ring conveyor mechanism 7 and the outer ring conveyor mechanism 6, respectively. The assembly mechanism 8 successively grasps the large cage and then the small cage, layering them onto the inner ring to form a double-layer assembly. The assembly is then conveyed to the weighing mechanism 11, where the weight is compared using the gravity sensor 112 to determine if there is any missing ball. Qualified products are linked to the outer ring conveying mechanism 62 to complete the initial assembly of the outer ring, while defective products with missing balls are temporarily stored for diversion. After initial assembly, the bearings are sent to the gantry demagnetizing box 121, where they pass through an alternating attenuating magnetic field to eliminate residual magnetism from assembly. Finally, the layered pushing component 122 pushes materials in sections. Demagnetized good products are conveyed to the finished product conveyor belt, while defective products with missing balls are pushed separately into a dedicated collection channel, and the fully automatic bearing assembly operation is carried out cyclically. Figure 23 As shown, this device assembles a TBB bearing. In the figure, A is the inner ring, B is the large cage, C is the steel ball filled in the large cage, D is the steel ball filled in the small cage, E is the small cage, and F is the outer ring. Through the coordinated operation of the cage feeding mechanism 1, cage transfer mechanism 2, ball supply mechanism 5, ball adding mechanism 3, flipping mechanism 4, inner ring transfer mechanism 7, outer ring transfer mechanism 6, assembly mechanism 8, weighing mechanism 11, demagnetizing mechanism 10, and discharge mechanism 9, the entire process of assembling the double-layer bearing is automated and closed-loop. The servo motors, cylinders, and sensors of each process operate in a sequential and continuous manner, improving assembly capacity and reducing labor costs. At the same time, the fully automated operation eliminates various assembly defects caused by manual operation, and steadily improves the product processing qualification rate and assembly consistency.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A TBB double-layer bearing assembly device, characterized in that: Includes the frame and two sets of cage feeding mechanisms (1) installed on the frame, which store the large cage and the small cage respectively, and elastically and adaptively transfer the large cage and the small cage in sections; Two sets of cage transfer mechanisms (2) are installed on one side of the cage feeding mechanism (1) respectively, and automatically transfer the large and small cages obtained from transplanting. The ball supply mechanism (5) is located above the cage feeding mechanism (1) and supplies steel balls to the large cage and small cage in two independent routes. The ball feeding mechanism (3) is located on one side of the cage transmission mechanism (2), receives the steel balls transmitted by the ball supply mechanism (5), and presses the steel balls into the cage one by one; The flipping mechanism (4), located on one side of the ball-adding mechanism (3), flips the cage filled with steel balls for return transport; Inner ring transmission mechanism (7) is used for directional transmission of the inner ring to be assembled; Outer ring transmission mechanism (6) directionally transmits the outer ring to be assembled; Assembly mechanism (8) steps to grab the large cage and small cage and fit them into the inner ring to form a double-layer assembly; The weighing mechanism (11) determines the leakage ball by weight comparison, and the qualified product is linked to the outer ring transmission mechanism (6) to complete the initial assembly; The demagnetizing mechanism (10) picks up the outer ring and the initially assembled parts from the outer ring transmission mechanism (6) and completes the demagnetizing operation. The discharge mechanism (9) discharges the demagnetized finished products and the defective products that have been tested for leakage in separate sections.

2. The TBB double-layer bearing assembly device according to claim 1, characterized in that: The cage feeding mechanism (1) includes a lifting mechanism (102), a cage transfer mechanism (103), and a material tray hopper (101) for storing large and small cages. The material tray hopper (101) is stored in a column-type sleeve rod (1013) manner. The lifting mechanism (102) is installed on one side of the material tray hopper (101) for lifting and feeding the cages stored in the material tray hopper (101). The cage transfer mechanism (103) is installed on the other side of the material tray hopper (101) for transferring the lifted cages to the cage transfer mechanism (2) for directional transfer.

3. The TBB double-layer bearing assembly device according to claim 2, characterized in that: The material tray hopper (101) includes a rotary table (1011) mounted on a frame. Multiple sleeve rods (1013) for connecting storage holders are fixed at equal angles on the rotary table (1011). Lifting plates (1012) are slidably connected to the sleeve rods (1013). The lifting mechanism (102) drives the lifting plates (1012) to rise gradually, so that the holders on the sleeve rods (1013) are fed one by one to the holder transfer mechanism (103). The rotary table (1011) is driven by a first rotary motor (1014).

4. The TBB double-layer bearing assembly device according to claim 3, characterized in that: The retainer transfer mechanism (103) includes a first vertical rod (1031), and a horizontal moving module (1032) is fixed at the upper end of the first vertical rod (1031). A first cylinder (1033) is installed on the moving platform of the horizontal moving module (1032). An elastic gripper (1034) is installed at the piston rod end of the first cylinder (1033) for gripping the upper retainer of the sleeve rod (1013). The gripped retainer is moved horizontally to the top of the retainer transfer mechanism (2) by the horizontal moving module (1032), and then the gripped retainer is placed on the retainer transfer mechanism (2) by the first cylinder (1033).

5. The TBB double-layer bearing assembly device according to claim 4, characterized in that: The elastic gripper (1034) includes an elastic clamping mechanism and a support mechanism located below the elastic clamping mechanism. The support mechanism is connected to the moving platform of the horizontal moving module (1032) through a support bracket (10341), so that the horizontal moving module (1032) synchronously drives the elastic clamping mechanism and the support mechanism to move synchronously. The support mechanism is used to clamp and fix the retainer to be transplanted on the sleeve rod (1013), so that the elastic clamping mechanism only applies downward pressure to the retainer fixed by the support mechanism.

6. The TBB double-layer bearing assembly device according to claim 1, characterized in that: The cage transfer mechanism (2) includes a transfer plate (22) and a transfer mechanism (21). One end of the transfer plate (22) is located directly below the cage transfer mechanism (103). The ball-adding mechanism (3) and the flipping mechanism (4) are both located on the same side of the other end of the transfer plate (22). The transfer mechanism (21) is installed on the other side of the transfer plate (22) and is used to move the cage on the transfer plate (22).

7. The TBB double-layer bearing assembly device according to claim 1, characterized in that: The ball supply mechanism (5) includes a ball bin (51) and a quantitative conveying mechanism (52) installed below the ball bin (51). The ball bin (51) is equipped with a ball pushing mechanism for pushing steel balls out of the ball bin (51). One side of the ball bin (51) is connected to a discharge pipe (54). A counting sensor (53) is installed on the discharge pipe (54). The output end of the quantitative conveying mechanism (52) is connected to the ball adding mechanism (3). The feed end of the quantitative conveying mechanism (52) is connected to the discharge end of the discharge pipe (54). The counting sensor (53) counts the number of steel balls flowing out of the ball bin (51) in real time. Then, the quantitative conveying mechanism (52) delivers the number of steel balls that match the number of cage filling positions to the ball adding mechanism (3).

8. The TBB double-layer bearing assembly device according to claim 7, characterized in that: The ball chamber (51) is provided with multiple storage cavities (511). Each storage cavity (511) is equipped with a corresponding ball pushing mechanism. Each storage cavity (511) has a feeding pipe (54) on its upper side wall. When the steel balls in one storage cavity (511) are used up, they are transferred to another storage cavity (511) for feeding.

9. A TBB double-layer bearing assembly device according to claim 8, characterized in that: The quantitative conveying mechanism (52) includes a clamping plate (521) and a fixed base plate. A feeding base plate (523) is fixed on the fixed base plate. Two lower ball tubes (526) are inserted into the feeding base plate (523). The lower ends of the two lower ball tubes (526) are respectively connected to the ball feeding mechanisms (3) on both sides for conveying steel balls to the small cage and the large cage. A servo moving mechanism (524) is fixed on the fixed base plate. A transition plate (525) is installed on the moving platform of the servo moving mechanism (524). A fixed plate is fixed on the transition plate (525). There are a number of lower ball blocks (522) corresponding to the lower ball tube (526). The lower ball block (522) is provided with a quantitative receiving cavity. The number of steel balls stored in the quantitative receiving cavity is consistent with the number of balls required to be added to the large cage and the small cage. Multiple transfer tubes are clamped on the clamping plate (521). The number of transfer tubes is the same as the number of feeding pipes (54). The upper end of each transfer tube is connected to the lower end of the feeding pipe (54). The lower end of the transfer tube is flush with the lower end of the clamping plate (521). Both the upper and lower ends of the quantitative receiving cavity are provided with connecting holes.

10. A TBB double-layer bearing assembly device according to claim 1, characterized in that: The ball-adding mechanism (3) includes a support plate (31) and a first bracket (32). The support plate (31) is embedded in the transfer plate (22) of the cage transfer mechanism (2). The lower end of the support plate (31) is fixed to the upper surface of the frame via a second bracket (33). The lower end of the first bracket (32) is fixed to the upper surface of the frame. A push cylinder (34) is fixed to the upper end of the first bracket (32). A connecting plate (35) is fixed to the piston rod end of the push cylinder (34), and the connecting plate (35) is connected to the first bracket (32). 32) Sliding connection, one end of the connecting plate (35) is rotatably connected to a ball-adding block (36), the ball-adding block (36) is provided with a feeding channel (37) inside, the upper end of the feeding channel (37) is rotatably connected to a ball-adding head (38), the ball-adding head (38) is connected to the lower end of the lower ball tube (526), ​​the lower end of the feeding channel (37) is provided with a ball outlet hole (39) matching the filling position of the cage, and the other end of the connecting plate (35) is equipped with a second rotary motor (310) for driving the ball-adding block (36) to rotate.

11. A TBB double-layer bearing assembly device according to claim 1, characterized in that: The demagnetizing mechanism (10) includes a demagnetizing box (121) and a pushing component (122). The demagnetizing box (121) is equipped with a gantry-type demagnetizing module. The pushing component (122) is located on one side of the demagnetizing box (121). The pushing component (122) pushes materials in layers according to the demagnetized finished product and the defective product detected by the leakage ball test.

12. A TBB double-layer bearing assembly device according to claim 11, characterized in that: The feeding assembly (122) includes a lifting cylinder and an L-shaped plate (1221). The telescopic end of the lifting cylinder passes through the transmission plate (22) in the inner ring transmission mechanism (7) and is fixed with a bearing plate (1222). When the lifting cylinder is not extended, the bearing plate (1222) is flush with the surface of the transmission plate (22) in the inner ring transmission mechanism (7). A third support plate (1224) is fixed at the upper end of the L-shaped plate (1221). The third support plate (1224) has a through hole for the bearing plate (1222) to pass through. Push blocks (1223) are provided on one side of the third support plate (1224) and the vertical side of the L-shaped plate (1221). A feeding cylinder (1225) is fixed on one side of the push block (1223). The mounting end of the feeding cylinder (1225) is fixed to the upper surface of the frame through a connecting bracket (1226).

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