A needle bearing assembly apparatus

Abstract

The application relates to a needle roller bearing assembling device, and relates to the technical field of needle roller bearings. The assembling device comprises a machine body, an oiling mechanism, a needle placing mechanism, a needle pressing mechanism, a pressing mechanism and a pushing mechanism. The needle placing mechanism comprises a needle placing table provided with a needle placing hole, a needle placing disc rotatably arranged on the machine body and provided with a needle placing groove, a driving assembly for driving the needle placing disc to rotate, a moving table slidably arranged on the machine body, a needle placing pipe connected with a vibrating feeder and used for vertically stacking the needle rollers in the needle placing pipe, and a needle placing assembly used for placing the needle rollers in the inner side of the outer ring. The oiling mechanism is used for applying lubricating grease, the needle placing mechanism is used for extending the needle rollers to the inner side of the outer ring, the needle pressing mechanism is used for pushing the needle rollers to be clamped and installed on the outer groove bodies, and the pressing mechanism is used for pressing the inner ring into the inner side of the outer ring to realize assembling. Therefore, the efficiency and quality of the assembling can be greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of needle roller bearings, and in particular to a needle roller bearing assembly device. Background Technology

[0002] Needle roller bearings are roller bearings with cylindrical rollers that are both thin and long relative to their diameter. These rollers are called needle rollers. Despite having a small cross-section, the bearings still have a high load-bearing capacity. Needle roller bearings are equipped with thin and long rollers, so the radial structure is compact. When the inner diameter and load capacity are the same as other types of bearings, the outer diameter is the smallest, making them particularly suitable for support structures where the radial installation size is limited.

[0003] A needle roller bearing includes an outer ring, an inner ring, and multiple needle rollers. The inner wall of the outer ring is provided with multiple outer grooves that limit the movement of the needle rollers. The inner ring is provided with an annular inner groove that abuts against the needle rollers to achieve rotational connection.

[0004] Both the outer and inner grooves are concave, making it difficult to directly assemble the needle rollers onto them. This means that the installation of existing needle roller bearings mainly relies on semi-automatic assembly equipment. It requires multiple push-and-clamp installations of the needle rollers onto the outer groove for positioning, followed by pressing the inner ring into the inner side of the outer ring. Multiple needle rollers are rotated and installed on multiple outer and inner grooves for positioning. During manual installation, needle roller displacement or detachment is prone to occur, making it difficult to guarantee the accuracy and quality of installation and reducing the efficiency and quality of needle roller bearing assembly. Summary of the Invention

[0005] To improve the efficiency and quality of bearing assembly, this application provides a needle roller bearing assembly device.

[0006] This application provides a needle roller bearing assembly device, which adopts the following technical solution:

[0007] A needle roller bearing assembly device includes a machine body, a lubrication mechanism, a needle placement mechanism, a needle pressing mechanism, a pressing mechanism, and a pushing mechanism. The lubrication mechanism is used to add lubricating grease to multiple outer grooves of the outer ring. The needle pressing mechanism is used to push multiple needle rollers to clamp onto the multiple outer grooves for positioning. The pressing mechanism is used to press the inner ring into the inner side of the outer ring. The pushing mechanism is activated so that the outer ring passes through the lubrication mechanism, the needle placement mechanism, the needle pressing mechanism, and the pressing mechanism in sequence before being output and clamped and positioned, realizing four processes simultaneously.

[0008] The needle dispensing mechanism includes:

[0009] A needle feeding platform is installed on the machine body and has a needle feeding hole;

[0010] The needle feeding plate is rotatably mounted on the machine body and located inside the needle feeding hole, with a number of needle feeding slots arranged in a circular array that is the same as the number of outer slots.

[0011] The drive component is used to drive the needle feeding disc to rotate;

[0012] The movable platform is slidably mounted on the machine body;

[0013] The needle release tube is set on the moving platform and connected vertically upward to the vibrating feeder, so that the needle rollers are vertically stacked and placed in the needle release tube, and the needle roller at the lowest position abuts against the needle release platform for positioning.

[0014] The needle-feeding assembly is used to pick up the needles located in multiple needle-feeding slots, place them inside the outer ring, and position them by the viscosity of the grease, so that the multiple needles are aligned with the multiple outer slots; the needle-feeding tube moves to align with a certain needle-feeding slot and causes the needles to fall and be placed on the needle-feeding slot; the needle-feeding disc rotates to place the multiple needles into the multiple needle-feeding slots.

[0015] By adopting the above technical solution, the feeding mechanism starts and pushes the outer ring to the machine body. Then, the outer ring passes through the lubrication mechanism, needle placement mechanism, needle pressing mechanism and pressing mechanism in sequence before being output. The lubrication mechanism applies grease to multiple outer grooves. The needle placement mechanism arranges the needle rollers as needed and then puts the arranged needle rollers into the inner side of the outer ring, so that the needle rollers are positioned under the action of the grease viscosity. The needle pressing mechanism is used to push multiple needle rollers to snap into multiple outer grooves for positioning. Then, the pressing mechanism presses in the inner ring, so that multiple needle rollers roll on the outer groove and inner groove for positioning, thereby completing the assembly of the bearing.

[0016] When the vibratory feeder starts, multiple needle rollers are vertically stacked and placed inside the needle-dispensing tube. The lowest needle roller is positioned against the needle-dispensing platform. The moving stage starts and drives the needle-dispensing tube to approach the needle-dispensing hole, aligning the needle-dispensing tube with a needle-dispensing slot. The needle rollers inside the needle-dispensing tube fall onto the needle-dispensing slot under gravity, and the needle-dispensing tube guides the movement of the needle rollers during placement. Then, the needle-dispensing plate rotates so that the next needle-dispensing slot aligns with the needle-dispensing tube. This process is repeated to place multiple needle rollers onto multiple placement slots for positioning. After placement, the moving stage drives the needle-dispensing tube to move back, and the needle-dispensing platform continues to position the needle rollers. Then, the needle-dispensing assembly picks up the needle rollers located on the needle-dispensing slots and moves them to the inner side of the outer ring, causing multiple needle rollers to move down and come into contact with the grease. The multiple needle rollers are then positioned by the viscosity of the grease.

[0017] The lubrication mechanism applies grease to multiple outer grooves, and the needle feeding mechanism arranges multiple needle rollers as needed. The needle rollers are then picked up and conveyed to the inside of the outer ring, so that they come into contact with the grease. The grease's viscosity positions the needle rollers and aligns them with the outer grooves. The needle pressing mechanism pushes the needle rollers to snap them into the outer grooves. The pressing mechanism then presses the inner ring into the inner side of the outer ring to complete the assembly. At the same time, the pushing mechanism moves the outer ring and positions it, achieving automated assembly, reducing manual intervention, and thus greatly improving assembly efficiency and quality.

[0018] Optionally, the driving component includes:

[0019] The driving component is used to drive the needle feeding disc to rotate;

[0020] A detection element is set on a moving platform and aligned with the needle dispensing tube and two adjacent needle dispensing slots. The detection element is used to detect whether a needle roller is placed in the needle dispensing slot and is electrically connected to the driving element. The needle dispensing disc drives the needle dispensing slot after the needle roller is placed to rotate to align with the detection element and perform detection through the detection element. If there is a needle roller in the needle dispensing slot, the needle dispensing disc continues to rotate normally. If there is no needle roller in the needle dispensing slot, the needle dispensing disc reverses and replenishes the needle roller into the needle dispensing slot.

[0021] By adopting the above technical solution, the needle roller is placed on the needle release groove, and the driving component drives the needle release plate to rotate so that the needle release groove moves to the detection component. The detection component is used to detect whether there is a needle roller on the needle release groove. If there is a needle roller on the needle release groove, the needle release plate continues to rotate and the detection component continues to detect. If there is no needle roller on the needle release groove, the needle release plate rotates back and the needle roller in the needle release tube continues to be added to the needle release groove. This can greatly reduce the risk of the needle roller not being installed properly and further improve the efficiency and quality of assembly.

[0022] Optionally, the pushing mechanism includes:

[0023] Conveyor belt one and conveyor belt two are set on both ends of the machine body and are used to transport the outer ring and make the outer ring transported along the length of the machine body;

[0024] The push bar is installed on the machine body and is set along the length of the machine body;

[0025] Push block one, and slide it along the length of the machine body;

[0026] Pushing block two is slidably disposed along the length of the machine body perpendicular to the length of the machine body and has multiple pushing grooves spaced apart along the length of the machine body; pushing block two is close to the outer ring and pushes the outer ring to be snapped into the pushing groove and pushes the machine body located against the pushing bar for positioning; pushing block one is activated to push the outer ring located on conveyor belt one to move to the machine body and cause the outer ring to pass through the oiling mechanism, needle releasing mechanism, needle pressing mechanism, pressing mechanism in sequence and finally move to conveyor belt two for conveying.

[0027] By adopting the above technical solution, conveyor belt one drives the outer ring to move, pushing block two close to the push bar, so that the inner rings located on conveyor belt one and the machine body are both snapped into the push groove, and the outer rings located on the machine body abut against the push bar for positioning. This enables positioning during the assembly of the outer rings. At the same time, pushing block one drives pushing block two to move, thus moving multiple inner rings simultaneously. Then, pushing block two away from the inner rings pushes block one back, thereby pushing multiple outer rings forward for assembly and positioning. After the outer rings are assembled, they move onto conveyor belt two, which drives the outer rings to move, thus realizing the conveying and positioning of the outer rings, improving assembly efficiency and quality.

[0028] Optionally, the upper surface of the needle feeding plate is coaxially provided with positioning posts for positioning the cage and located inside multiple needle feeding slots. Two needle feeding platforms are provided and slidably disposed on the machine body. The machine body is provided with a feeding mechanism for feeding the cage onto the positioning posts. The feeding mechanism is used to feed the cage onto the positioning posts for positioning. After multiple needle rollers are placed into multiple needle feeding slots, the two needle feeding platforms move closer to each other to push the needle rollers to engage and install them onto multiple windows of the cage for positioning. The two needle feeding platforms move back to facilitate the continued placement of the cage and needle rollers.

[0029] The needle release assembly adsorbs and grips the conveying needle rollers while the feeding mechanism is not activated, or the feeding mechanism is activated while the needle release assembly adsorbs and grips the conveying retainer.

[0030] By adopting the above technical solutions, needle roller bearings are divided into two types: cageless and caged. For caged needle roller bearings, multiple needle rollers are rotatably mounted on the cage, and multiple needle rollers are snapped into the cage window for positioning. In the existing technology, the cage is generally placed manually, and then the needle rollers are pushed by a cylinder to snap into the cage window. Therefore, two molds are required to assemble the two types of needle roller bearings, which reduces assembly efficiency and quality.

[0031] The feeding mechanism is used to position the cage onto the positioning post. The two needle feeding platforms are far apart from each other, and then multiple needle rollers are placed into multiple needle feeding slots. After placement, the two needle feeding platforms move closer to each other and push the multiple needle rollers to snap into the multiple cage windows for positioning. This achieves the snap-fit ​​installation of multiple needle rollers into the cage windows, thereby realizing the assembly of the bearing with the cage. Then the needle feeding assembly adsorbs, grips, and conveys the cage to move, and then completes the subsequent assembly.

[0032] When assembling a cageless bearing, two needle roller mounting stations are brought close together, and multiple needle rollers are placed into multiple needle roller slots. The needle roller mounting assembly then picks up, grips, and transports the needle rollers to complete the subsequent assembly. This allows for the assembly of two types of needle roller bearings using a single mold, improving assembly efficiency and quality. Furthermore, the two needle roller mounting stations enable multiple needle rollers to be simultaneously snapped onto the cage window, further enhancing assembly efficiency and quality.

[0033] Optionally, the feeding mechanism includes:

[0034] The feeding rack is mounted on the machine body and is used to vertically stack multiple retainers;

[0035] The feeding block slides along the direction of approaching or moving away from the positioning column and is set on the surface of the needle release table;

[0036] The top of the feeding plate is rotatably mounted on the side wall of the feeding block.

[0037] The elastic element is connected to the feed plate and the feed block respectively, and the bottom end of the feed plate is tilted towards the cage.

[0038] The feeding plate pushes the lowest-positioned retainer toward the positioning post and causes the feeding block to fill the position of the moved retainer and to position the retainer; when the retainer moves down and is fitted onto the positioning post, the feeding plate generates a downward pushing force on the retainer under the action of the elastic element; the feeding block drives the feeding plate to move back and causes the lowest-positioned retainer to move down and be placed on the needle feeding table.

[0039] By adopting the above technical solution, the feeding block drives the feeding plate close to the retainer. After being squeezed, the feeding plate turns to a vertical position. The feeding plate pushes the retainer close to the positioning post, so that the feeding block moves to the bottom of the retainer located in the storage rack. The feeding block can fill the position of the removed retainer and support and position the retainer. The feeding plate moves so that the retainer moves to the positioning post. The retainer moves down and fits onto the positioning post. After the retainer moves down, the feeding plate continues to move and contacts the top of the retainer. The feeding plate continues to move and rotates under the pushing action of the retainer, so that the bottom of the feeding plate turns to an inclined position close to the feeding block, which can generate downward pressure on the retainer, so that the retainer can fit onto the positioning post better. Then the feeding block moves back and disengages from the retainer. Multiple retainers located in the storage rack first contact the feeding plate. The feeding plate can buffer the impact of the retainer. Finally, the retainer at the lowest position is placed on the needle release table for positioning, thereby improving assembly efficiency and quality and reducing the risk of retainer damage.

[0040] Optionally, the needle delivery assembly includes:

[0041] Adsorption stage one is horizontally slidably mounted on the machine body;

[0042] Adsorption stage two is vertically slidably mounted on adsorption stage one;

[0043] Adsorption element, used to adsorb and grasp the rollers located in the needle release groove;

[0044] Alternatively, it can be used for adsorption, gripping, and conveying of the retainer, wherein the adsorption platform is provided with a pressing component that presses the retainer into the inner side of the outer ring.

[0045] By adopting the above technical solution, the first adsorption stage moves to drive the second adsorption stage to move above the needle release stage. The second adsorption stage moves down to drive the adsorption component to move down, so that the adsorption component is adsorbed on multiple needle rollers. Then, the second adsorption stage moves up and then moves horizontally, so that the adsorption component and multiple needle rollers move to the outer ring. The adsorption component drives multiple needle rollers to move down, so that multiple needle rollers move down and extend to the inner side of the outer ring, so that the grease comes into contact with multiple needle rollers. Multiple needle rollers are positioned under the action of the grease viscosity, thus realizing the assembly of cageless needle roller bearings.

[0046] Alternatively, the adsorption component is used to adsorb, grip, and convey the cage, allowing multiple needle rollers to be placed on the outer ring. Then, the pressing assembly is activated to press the cage and multiple needle rollers into the outer ring, thereby realizing the assembly of a caged needle roller bearing. This enables the assembly of two types of bearings, improving the assembly efficiency and quality of the bearing.

[0047] Optionally, the press-in component includes:

[0048] The telescopic component is installed on the second adsorption platform with the piston rod vertically downward.

[0049] A pressure plate is set on the piston rod of the telescopic component and has a pressure hole. In the initial state, the pressure plate abuts against the lower surface of the adsorption stage and allows the adsorption component to pass through the pressure hole and extend below the pressure plate. After the retainer is placed on the outer ring, the pressure plate moves down to press the retainer and multiple needle rollers into the outer ring. When the adsorption component adsorbs the retainer for conveying, the needle roller mechanism is not activated.

[0050] By adopting the above technical solution, the adsorption component adsorbs and grips the conveying retainer, so that the retainer is placed on the outer ring. The adsorption component is unlocked, and the telescopic component drives the pressure plate to move down, pushing multiple needle rollers and the retainer into the inner side of the outer ring. This causes multiple needle rollers to rotate and be installed on multiple outer grooves for positioning. The telescopic component then starts to drive the pressure plate to move up and abut against the second adsorption table for positioning.

[0051] Optionally, the pressure needle mechanism includes:

[0052] The needle presser seat is vertically slidably mounted on the machine body;

[0053] The pressure needle is set on the pressure base and is frustoconical in shape, with the diameter of the top end being larger than the diameter of the bottom end;

[0054] Multiple pressure needle rings are inclined and slidably disposed on the outer wall of the pressure needle head and arranged in a circular array around the axis of the pressure needle head;

[0055] Multiple elastic elements are correspondingly arranged with multiple pressure needle rings, and their two ends are respectively connected to the pressure needle seat and the pressure needle ring; the pressure needle seat moves down to drive the multiple pressure needle rings to extend between multiple needle rollers until they abut against the machine body for positioning; the pressure needle seat continues to move down to drive the pressure needle head to move down and push the multiple pressure needle rings to push the needle rollers to engage and install them onto multiple outer grooves; the pressure needle seat moves up so that the multiple pressure needle rings move away from the needle rollers under the elastic force of the elastic elements.

[0056] By adopting the above technical solution, the pressure needle seat moves downward, driving the pressure needle head and multiple pressure needle rings to move downward, so that the multiple pressure needle rings move downward and extend to the inside of multiple needle rollers until the multiple pressure needle rings abut against the machine body for positioning. The pressure needle head moves downward, pushing the multiple pressure needle rings away from each other, and the multiple pressure needle rings push the multiple needle rollers to be snapped and installed onto the outer groove for positioning. The pressure needle seat moves upward, driving the pressure needle head to move upward, and multiple elastic elements push the multiple pressure needle rings to move closer to each other, so that the multiple pressure needle rings move away from the multiple needle rollers. Then the pressure needle seat moves upward, driving the elastic elements and multiple pressure needle rings to move upward, thereby realizing the snapping and installation of multiple needle rollers onto multiple outer grooves for positioning.

[0057] Optionally, the pressing mechanism includes:

[0058] The press-fitting base is vertically slidably mounted on the machine body;

[0059] A conveying assembly for conveying and placing an inner ring onto a plurality of needle rollers, wherein the press-fitting seat moves down to press the inner ring into the inner side of the outer ring and causes the plurality of needle rollers to rotate and be mounted on the outer groove and the inner groove.

[0060] By adopting the above technical solution, the conveying assembly places the inner ring onto multiple needle rollers, and the pressing seat moves down to press the inner ring into the outer ring, thereby completing the bearing assembly.

[0061] Optionally, the conveying assembly includes:

[0062] The storage rack is installed on the machine body and multiple inner rings are stacked vertically.

[0063] The push plate is horizontally slidably mounted on the machine body and is used to push the inner ring located at the lowest point to move and place it on multiple needle rollers, and to support and position the inner ring located in the storage rack.

[0064] By adopting the above technical solution, multiple inner rings are vertically stacked on the storage rack. The push plate moves to move the inner rings onto multiple needle rollers. The push plate can position the inner rings in the storage rack. Then the push plate moves back. After the push plate separates from the inner rings, the multiple inner rings move down and abut against the machine body for positioning, thereby realizing the feeding and positioning of the inner rings and improving assembly efficiency and quality.

[0065] In summary, this application includes at least one of the following beneficial technical effects:

[0066] 1. The lubrication mechanism applies grease to multiple outer grooves, the needle release mechanism extends multiple needle rollers into the inner side of the outer ring after being arranged, the needle pressing mechanism pushes multiple needle rollers to snap onto multiple outer grooves, and the pressing mechanism presses the inner ring into the inner side of the outer ring to complete the assembly. At the same time, the pushing mechanism can push the outer ring to move and position the outer ring, realizing automated assembly, reducing manual intervention, and thus greatly improving the efficiency and quality of assembly.

[0067] 2. The detection component is used to detect whether there are needle rollers in the needle release groove. If there are needle rollers in the needle release groove, the needle release plate continues to rotate. If there are no needle rollers in the needle release groove, the needle release plate rotates back, and the needle rollers in the needle release tube continue to be added to the needle release groove, which further improves the efficiency and quality of assembly.

[0068] 3. The feeding mechanism positions the cage onto the positioning post, places multiple needle rollers into multiple needle release slots, and two needle release tables move closer together to push the multiple needle rollers into the cage windows for positioning. This achieves the assembly of bearings with cages by snapping multiple needle rollers into the cage windows. Then, the needle release assembly picks up and transports the cage to move, completing the subsequent assembly. Thus, two types of needle roller bearings can be assembled using a single mold, improving assembly efficiency and quality. Attached Figure Description

[0069] Figure 1 This is a three-dimensional structural schematic diagram of embodiment 1 of the assembly equipment;

[0070] Figure 2 This is a schematic diagram of the material pushing mechanism in Embodiment 1 of the assembly equipment;

[0071] Figure 3 This is a schematic diagram of the refueling mechanism and needle dispensing mechanism in Embodiment 1 of the assembly equipment;

[0072] Figure 4 This is a structural schematic diagram of the needle-laying disc, positioning column, and driving component in Embodiment 1 of the assembly equipment;

[0073] Figure 5 This is a schematic diagram of the pressure needle mechanism and the pressing mechanism in Embodiment 1 of the assembly equipment;

[0074] Figure 6 yes Figure 5 A cross-sectional schematic diagram of AA in the middle;

[0075] Figure 7 This is a schematic diagram of the pressing mechanism in Embodiment 1 of the assembly equipment;

[0076] Figure 8 This is a schematic diagram of the feeding mechanism in embodiment 2 of the assembly equipment;

[0077] Figure 9 This is a schematic diagram of the press-in component in embodiment 2 of the assembly equipment;

[0078] Figure 10 This is a partial structural diagram of the feeding mechanism in embodiment 2 of the assembly equipment, where the cage is in the state of being moved down and fitted onto the positioning column;

[0079] Figure 11 yes Figure 8 Enlarged schematic diagram of section B in the middle.

[0080] Reference numerals: 1. Machine body; 11. Vibrating feeder; 13. Support platform; 14. Outer ring; 15. Support plate one; 16. Support plate two; 2. Oiling mechanism; 21. Oiling head; 22. Lifting component; 3. Needle feeding mechanism; 31. Needle feeding platform; 311. Needle feeding hole; 312. Positioning post; 32. Needle feeding disc; 321. Needle feeding groove; 322. Guide angle; 33. Drive assembly; 331. Drive component; 332. Detection component; 34. Moving platform; 35. Needle feeding tube; 36. Needle feeding assembly; 37. Adsorption platform one; 38. Adsorption platform two; 39. Adsorption component; 4. Needle pressing mechanism; 41. Needle pressing seat; 42. Needle pressing head; 43. Pressing pin ring; 44. Elastic component; 45. Bearing ring; 5. Pressing mechanism; 51. Pressing seat; 52. Conveying assembly; 53. Storage rack; 54. Push plate; 55. Through hole; 6. Pushing mechanism; 61. Conveyor belt one; 62. Conveyor belt two; 63. Push bar; 64. Push block one; 65. Push block two; 66. Push groove; 7. Feeding mechanism; 71. Feeding rack; 72. Feeding block; 73. Feeding plate; 74. Elastic component; 75. Discharge hole; 76. Rotating shaft; 8. Pressing assembly; 81. Telescopic component; 82. Pressure plate; 83. Pressing hole; 9. Retainer; 91. Moving component one; 92. Moving component two. Detailed Implementation

[0081] The following provides a further detailed description of this application.

[0082] This application discloses a needle roller bearing assembly device.

[0083] Example 1, referring to Figure 1The needle roller bearing assembly equipment includes a machine body 1, a lubrication mechanism 2, a needle placement mechanism 3, a needle pressing mechanism 4, a pressing mechanism 5, and a pushing mechanism 6. The lubrication mechanism 2 is used to add grease to multiple outer grooves of the outer ring 14. The needle placement mechanism 3 is used to arrange the needle rollers as needed and place the arranged needle rollers inside the outer ring 14, so that multiple needle rollers are in contact with the grease. Under the action of the grease viscosity, the multiple needle rollers are positioned and aligned with the multiple outer grooves of the outer ring 14. The needle pressing mechanism 4 is used to push multiple needle rollers into multiple outer grooves; the pressing mechanism 5 is used to press the inner ring into the inner side of the outer ring 14, and to make multiple needle rollers rotate and install on multiple outer grooves and inner grooves; the lubrication mechanism 2, the needle releasing mechanism 3, the needle pressing mechanism 4, and the pressing mechanism 5 are arranged at intervals along the length of the machine body 1. The material pushing mechanism 6 is activated so that the outer ring 14 is conveyed to the machine body 1 and then passes through the lubrication mechanism 2, the needle releasing mechanism 3, the needle pressing mechanism 4, and the pressing mechanism 5 in sequence before being output. It is also used to clamp and position the outer ring 14 and realize the simultaneous operation of the four processes, so that the movement direction of the outer ring 14 is parallel to the length direction of the machine body 1.

[0084] Reference Figure 1 and Figure 2 The pushing mechanism 6 includes a first conveyor belt 61, a second conveyor belt 62, a pushing bar 63, a first pushing block 64, and a second pushing block 65. The first conveyor belt 61 and the second conveyor belt 62 are fixedly installed on both ends of the machine body 1 and are both used to convey the outer ring 14, such that the moving direction of the outer ring 14 is parallel to the length direction of the machine body 1. The pushing bar 63 is fixedly installed on the upper surface of the machine body 1, and its two ends extend along the length direction of the machine body 1 to both ends of the machine body 1. The first pushing block 64 is horizontally slidably installed on the upper surface of the machine body 1, and its sliding direction is parallel to the length direction of the machine body 1. The pusher block 64 is located on one side of the pusher bar 63; the pusher block 65 is horizontally slidably mounted on the upper surface of the body 1, and the sliding direction is perpendicular to the length direction of the body 1, and it is located between the pusher bar 63 and the pusher block 64; an electric push rod connected to the pusher block 64 and used to drive the pusher block 64 to move is fixedly mounted on the body 1, and an electric push rod connected to the pusher block 65 and used to drive the pusher block 65 to move is also fixedly mounted on the upper surface of the pusher block 64, so as to realize the movement of the pusher block 64 along the length and width directions of the body 1.

[0085] Multiple push grooves 66 are spaced apart along the length of the machine body 1 on the side wall of the push block 65 near the push bar 63. The width of the push grooves 66 is greater than or equal to the outer diameter of the outer ring 14. One end of the push block 65 extends above the conveyor belt 61, and after the push block 65 moves, the other end extends above the conveyor belt 62.

[0086] Push block 2 65 approaches push bar 63, causing an outer ring 14 on conveyor belt 1 61 and multiple outer rings 14 on machine body 1 to be respectively engaged and installed on multiple push grooves 66, and causing the multiple outer rings 14 on machine body 1 to abut against push bar 63 for positioning; then push block 1 64 is activated to push multiple outer rings 14 closer to conveyor belt 2 62, causing the outer rings 14 on conveyor belt 1 61 to move onto machine body 1, and multiple inner rings on machine body 1 to move on machine body 1, while simultaneously causing the outer ring 14 on machine body 1 closest to conveyor belt 2 62 to move onto the push groove 66. The outer rings 14 are conveyed on conveyor belt 62. Push block 65 moves away from push bar 63 and causes multiple outer rings 14 to disengage from push groove 66. Push block 64 drives push block 65 to move back and approach conveyor belt 61. This process is repeated so that the outer rings 14 are conveyed to the machine body 1 and then sequentially pass through oiling mechanism 2, needle placement mechanism 3, needle pressing mechanism 4 and pressing mechanism 5 before being output. Oiling mechanism 2, needle placement mechanism 3, needle pressing mechanism 4 and pressing mechanism 5 are respectively aligned with the outer rings 14 located on the four push grooves 66 and the four processes are carried out simultaneously. Moreover, positioning can be performed during the assembly of outer rings 14.

[0087] Reference Figure 1 and Figure 3 The lubrication mechanism 2 is used to apply grease to multiple outer grooves. The lubrication mechanism 2 includes a lubrication head 21 and a lifting component 22. The lubrication head 21 is filled with grease and is vertically slidably mounted on the machine body 1. The lifting component 22 is an electric push rod. The lifting component 22 is fixedly mounted on the machine body 1 and is used to drive the lubrication head 21 to move vertically, thereby applying grease to the outer groove of the outer ring 14. When the outer ring 14 moves to the bottom of the lubrication mechanism 2, the lubrication mechanism 2 is activated to apply grease to multiple outer grooves to achieve lubrication.

[0088] Reference Figure 1 , Figures 3-4 The needle feeding mechanism 3 includes a needle feeding platform 31, a needle feeding disc 32, a drive assembly 33, a moving stage 34, a needle feeding tube 35, and a needle feeding assembly 36. The needle feeding platform 31 is fixedly mounted on the upper surface of the machine body 1 and is located on the side of the push bar 63 away from the push block 65. A circular needle feeding hole 311 is formed on the needle feeding platform 31, which runs vertically through the needle feeding platform 31. The needle feeding disc 32 is rotatably mounted on the upper surface of the machine body 1 and is located inside the needle feeding hole 311. The axes of the needle feeding disc 32 and the needle feeding hole 311 coincide. Multiple needle-releasing slots 321 are arranged in a circular array around their own axis on the upper surface of the needle-releasing disk 32. The number of needle-releasing slots 321 and the outer slot are the same and are arranged one-to-one. The needle-releasing slots 321 are provided with guide angles 322 to facilitate the insertion of the needle rollers. A positioning post 312 is detachably installed on the upper surface of the needle-releasing disk 32 and inside the multiple needle-releasing slots 321. The positioning post 312 and the needle-releasing disk 32 are arranged coaxially. The positioning post 312 and the needle-releasing hole 311 cooperate to limit the needle rollers and reduce the risk of the needle rollers tilting when they fall.

[0089] The drive assembly 33 drives the needle feeding disc 32 to rotate. An electric push rod is fixedly installed on the upper surface of the machine body 1, on the side of the needle feeding table 31 opposite to the push bar 63. The piston rod of the electric push rod is arranged perpendicular to the length of the machine body 1. The moving table 34 is fixedly installed on the piston rod of the electric push rod. When the electric push rod is activated, it drives the moving table 34 to move horizontally. The lower surface of the moving table 34 abuts against the upper surface of the needle feeding table 31. The needle feeding tube 35 is fixedly installed on the upper surface of the moving table 34. A vibrating feeder 11 is fixedly installed on the machine body 1, above the moving table 34. The needle feeding tube 35 is vertically connected to the vibrating feeder 11. The needle feeding tube 35 is made of soft material, such as plastic, to make way for the moving table 34 when it moves, reducing the risk of damage to the needle feeding tube 35. The moving table 34 has a moving hole. When the vibrating feeder 11 is activated, multiple needle rollers are vertically stacked and placed into the needle feeding tube 35 until the lowest needle roller abuts against the upper surface of the needle feeding table 31 through the moving hole for positioning.

[0090] The drive assembly 33 includes a drive component 331 and a detection component 332. The drive component 331 is fixedly installed on the machine body 1. The drive component 331 is a servo motor. The output shaft of the drive component 331 is coaxially connected to the needle feeding plate 32 and is used to drive the needle feeding plate 32 to rotate. The detection component 332 is fixedly installed vertically downward on the side wall of the moving table 34. The detection component 332 is used to detect whether there are needle rollers in the needle feeding groove 321. A control box that controls the start and stop of the drive component 331 is fixedly installed on the machine body 1. The detection component 332 is electrically connected to the control box. The detection component 332 transmits the data of the detected presence of needle rollers to the control box. The control box controls the start and stop of the drive component 331 according to the data.

[0091] The moving stage 34 starts to drive the needle tube 35 and the detection element 332 to approach the needle hole 311, so that the needle tube 35 and the detection element 332 are aligned with the two adjacent needle slots 321. The needle rollers in the needle tube 35 fall into the needle slots 321 under the gravity of their own weight and the needle rollers above them and move out of the needle tube 35. Then, the needle rollers in the needle tube 35 are positioned against the top of the needle rollers in the needle slots 321. The needle tube 35 can guide the needle rollers as they fall downwards.

[0092] The needle-dispensing disc 32 rotates in the forward direction, driving the same needle-dispensing groove 321 from the needle-dispensing tube 35 to the detection element 332. The needle-dispensing disc 32 rotates at an angle equal to the included angle between two adjacent needle-dispensing grooves 321. The detection element 332 is used to detect the needle rollers located in the needle-dispensing groove 321. If a needle roller is present, the needle-dispensing disc 32 continues to rotate normally. If no needle roller is present, the needle-dispensing disc 32 rotates in the reverse direction to replenish the needle rollers in the needle-dispensing groove 321, thereby placing multiple needle rollers on multiple needle-dispensing grooves 321. After placement, the moving stage 34 moves back and is misaligned with the needle-dispensing hole 311, so that the needle rollers located in the needle-dispensing tube 35 are positioned against the needle-dispensing stage 31.

[0093] The needle-feeding assembly 36 is used to grip the needles in the needle-feeding groove 321. The needle-feeding assembly 36 includes a first adsorption platform 37, a second adsorption platform 38, and an adsorption element 39. A support platform 13 is fixedly installed on the upper surface of the machine body 1, and the support platform 13 is arranged perpendicular to the length of the machine body 1. The first adsorption platform 37 is horizontally slidably installed on the support platform 13, and the first adsorption platform 37 is slidably arranged along the length of the machine body 1. The second adsorption platform 38 is vertically slidably arranged on the side wall of the first adsorption platform 37. A device rotatably mounted on the support platform 13 is connected to the first adsorption platform 37. A threaded lead screw is fixedly mounted on the support platform 13, which drives the motor of the lead screw to move the adsorption platform 37. An electric push rod is fixedly mounted on the side wall of the adsorption platform 37. The piston rod of the electric push rod is vertically downward and fixedly connected to the adsorption platform 38, thereby driving the adsorption platform 38 to move horizontally and vertically. Adsorption components 39 are fixedly mounted on the adsorption platform 38 and are spaced apart. The adsorption components 39 are suction cups and are used to adsorb and grasp multiple needle rollers located in the needle release hole 311 for conveying.

[0094] Adsorption stage 1 37 drives adsorption stage 2 38 and adsorption element 39 to move horizontally above needle placement stage 31. Adsorption stage 2 38 moves downward, driving adsorption element 39 to move downward to adsorb and position multiple needle rollers. Adsorption stage 2 38 moves upward, driving adsorption element 39 and multiple needle rollers to move upward above needle placement stage 31. Adsorption stage 1 37 drives adsorption stage 2 38, adsorption element 39 and multiple needle rollers to move horizontally above the outer ring 14 after grease application. Adsorption stage 2 38 moves downward, causing multiple needle rollers to extend into the inner side of the outer ring 14. At the same time, the needle rollers contact the grease and are positioned under the action of the grease's viscosity. Adsorption element 39 unlocks adsorption. Adsorption stage 2 38 moves upward, thereby placing the needle rollers into the inner side of the outer ring 14 and aligning multiple needle rollers with multiple outer grooves.

[0095] Reference Figure 1 , Figures 5-6The needle pressing mechanism 4 includes a needle pressing seat 41, a needle pressing head 42, multiple needle pressing rings 43, and an elastic element 44. A vertically upward support plate 15 is fixedly installed on the upper surface of the push bar 63. The needle pressing seat 41 is vertically slidably installed on the side wall of the support plate 15 and extends above the outer ring 14. An electric push rod is fixedly installed on the side wall of the support plate 15 and above the needle pressing seat 41. The piston rod of the electric push rod is vertically downward and fixedly connected to the upper surface of the needle pressing seat 41 to drive the needle pressing seat 41 to move vertically. The needle pressing head 42 is fixedly installed on the lower surface of the pressing seat 51 and is vertically downward, so that its axis coincides with the axis of the outer ring 14 located below. The needle pressing head 42 is frustum-shaped and the diameter of the top end is larger than the diameter of the bottom end. A bearing ring 45 is coaxially arranged at the bottom end of the needle pressing head 42.

[0096] Multiple pressure needle rings 43 are arranged in a circumferential array around the axis of the pressure needle head 42. The multiple pressure needle rings 43 are inclined and slidably disposed on the outer wall of the pressure needle head 42, so that the multiple pressure needle rings 43 move downward and approach each other, or move upward and move away from each other. The pressure needle rings 43 extend vertically downward from the outside of the support ring 45 to below the support ring 45. Multiple elastic members 44 are provided and are corresponding to the multiple pressure needle rings 43. The elastic members 44 are springs. The two ends of the elastic members 44 are fixedly connected to the lower surface of the pressure needle seat 41 and the top of the pressure needle rings 43. In the initial state, the multiple pressure needle rings 43 are positioned against the support ring 45 under the action of the elastic members 44, and the multiple pressure needle rings 43 are in a state of approaching each other.

[0097] The needle holder 41 moves downward, driving multiple needle rings 43 to pass between multiple needle rollers and abut against the machine body 1 for positioning. The needle holder 41 continues to move downward, and the needle rings 43 can no longer move downward. Guided by the inclined surface of the needle head 42, the needle rings 43 move away from each other, so that the multiple needle rings 43 approach the multiple needle rollers and push the multiple needle rollers to snap into the multiple outer grooves for positioning. Then, the needle holder 41 drives the needle head 42 to move upward, and the elastic element 44 pushes the multiple needle rings 43 to continue to abut against the machine body 1 for positioning. The multiple needle rings 43 approach each other under the action of the inclined surface of the needle head 42 until the multiple needle rings 43 abut against the bearing ring 45 for positioning. Finally, the multiple needle rings 43 are driven to move above the outer ring 14, thereby completing the snap-fit ​​installation of multiple needle rollers into multiple outer grooves. At the same time, the grease is evenly squeezed and the multiple needle rollers are positioned.

[0098] Reference Figure 1 , Figure 5 , Figure 7The pressing mechanism 5 includes a pressing seat 51 and a conveying assembly 52. ​​A vertically upward-mounted support plate 16 is fixedly installed on the upper surface of the push bar 63. The pressing seat 51 is vertically slidably mounted on the side wall of the support plate 16 near the outer ring 14. The pressing seat 51 extends directly above the outer ring 14. An electric push rod is fixedly installed on the side wall of the support plate 16 above the pressure needle seat 41. The piston rod of the electric push rod is vertically downward-mounted and fixedly connected to the upper surface of the pressure needle seat 41, thereby driving the pressing seat 51 to move vertically.

[0099] The conveying assembly 52 is used to convey and place the inner ring onto multiple needle rollers. The pressing seat 51 moves down to press the inner ring into the inner side of the outer ring 14, and causes multiple needle rollers to rotate and be installed on the outer groove and the inner groove. The conveying assembly 52 includes a storage rack 53 and a push plate 54. The storage rack 53 is fixedly installed on the side wall of the support plate 2 16 away from the pressing seat 51. The storage rack 53 is used to vertically stack multiple inner rings. The bottom end of the support plate 2 16 is opened to communicate with the storage rack 53 and to allow the inner rings to pass through the material passage hole 55 placed on the multiple needle rollers.

[0100] The push plate 54 is horizontally slidably installed on the side wall of the storage rack 53 away from the support plate 16. The thickness of the push plate 54 is equal to or less than the height of the inner ring. An electric push rod is fixedly installed on the upper surface of the machine body 1 and is fixedly connected to the push plate 54. The electric push rod starts to drive the push plate 54 to move. The push plate 54 moves and pushes the inner ring at the lowest position to be placed on multiple needle rollers through the material passage hole 55. During the movement of the push plate 54, it can fill the position of the inner ring that has been moved away. That is, the push plate 54 supports and positions the inner ring located in the storage rack 53. After the push plate 54 moves back, multiple inner rings continue to move down and the inner ring at the lowest position is placed on the push bar 63 for positioning.

[0101] The working principle of this application embodiment is as follows:

[0102] When the moving stage 34 is activated, the needle dispensing tube 35 and the detection element 332 are aligned with the two adjacent needle dispensing slots 321. The needle rollers in the needle dispensing tube 35 are placed downwards onto the needle dispensing slots 321. The needle dispensing disk 32 rotates, driving the needle dispensing disk 32 to rotate. The detection element 332 is used to detect the needle rollers located in the needle dispensing slots 321. If there are needle rollers, the needle dispensing disk 32 continues to rotate normally. If there are no needle rollers, the needle dispensing disk 32 rotates in the opposite direction to replenish the needle rollers into the needle dispensing slots 321, so that multiple needle rollers are placed on multiple needle dispensing slots 321. After placement, the moving stage 34 moves back and is misaligned with the needle dispensing hole 311 to arrange the needle rollers neatly.

[0103] Simultaneously, the pushing mechanism 6 starts to push the outer ring 14 onto the machine body 1. Then, the outer ring 14 is coated with grease by the lubrication mechanism 2 onto multiple outer grooves. The needle release assembly 36 starts to adsorb and grab multiple needle rollers located in the needle release hole 311 and place them into the outer ring 14. After the multiple needle rollers come into contact with the grease, they are positioned and aligned with the multiple outer grooves. The pressing mechanism 5 starts to snap the multiple needle rollers into the multiple outer grooves. Then, the pressing mechanism 5 places the inner ring onto the multiple needle rollers and presses the inner ring into the outer ring 14, so that the multiple needle rollers rotate and are positioned on the outer groove and inner groove. Finally, the outer ring 14 is output, thereby improving the assembly efficiency and quality of the bearing.

[0104] Example 2, refer to Figure 1 , Figure 4 , Figure 8-10 The difference between this embodiment and Embodiment 1 is that an installation plate is detachably installed at the bottom of the second adsorption platform 38, and multiple adsorption components 39 are fixedly installed on the installation plate, thereby facilitating the replacement of the adsorption components 39. The second adsorption platform 38 is provided with a pressing assembly 8 for pressing the retainer 9 into the inner side of the outer ring 14. When assembling the bearing with the retainer 9, the retainer 9 is positioned on the positioning post 312. Two needle feeding platforms 31 are arranged opposite each other and slide towards each other on the machine body 1. The machine body 1 is provided with a feeding mechanism 7 for feeding the retainer 9 onto the positioning post 312.

[0105] Example 1 describes the assembly of a bearing without a cage 9. The feeding mechanism 7 and the pressing assembly 8 are not activated. The adsorption component 39 adsorbs, grips, and conveys multiple needle rollers, which are then sequentially passed through the pressing mechanism 4 and the pressing mechanism 5 to complete the bearing assembly. Example 2 describes the assembly of a bearing with a cage 9. A suitable adsorption component 39 is replaced, and then the adsorption component 39 is used to adsorb, grip, and convey the cage 9. At this time, the pressing assembly 8 is activated to press the cage 9 and multiple needle rollers in, eliminating the need for the pressing mechanism 4, i.e., the pressing mechanism 4 is not activated. This allows for the assembly of both types of bearings, enabling free selection and improving the assembly efficiency and quality of the bearings.

[0106] Two movable parts 91 are fixedly installed on the machine body 1. The movable parts 91 are electric push rods. The piston rods of the two movable parts 91 are arranged along the length of the machine body 1 and are fixedly connected to the opposite side walls of the two needle feeding tables 31, respectively, to drive the two needle feeding tables 31 to move closer or further apart. The feeding mechanism 7 is used to position the retainer 9 onto the positioning post 312, and then place multiple needle rollers into multiple needle feeding slots 321 for positioning. When the two needle feeding tables 31 are activated, they move closer together, pushing multiple needle rollers out of the needle feeding slots 321 and then locking them in place. Positioning is achieved by mounting the needle rollers on multiple windows of the cage 9. The guide angle 322 is also set to facilitate the removal of the needle rollers from the needle release groove 321. Then, the suction component 39 is activated to suction and grab the cage 9 and transport the cage 9 to the outer ring 14 after applying grease. The pressing component 8 is activated to press the cage 9 and multiple needle rollers into the inner side of the outer ring 14, so that the multiple needle rollers are rotated and mounted on multiple outer grooves and the cage 9. The two needle release tables 31 are moved away from each other to facilitate the continued snapping and mounting of multiple needle rollers onto the multiple windows of the cage 9.

[0107] The feeding mechanism 7 includes a feeding frame 71, a feeding block 72, a feeding plate 73, and an elastic element 74. The bottom end of the feeding frame 71 is fixedly installed on the upper surface of the machine body 1 by a support column. The bottom end of the feeding frame 71 abuts against the upper surface of one of the needle dispensing platforms 31. The feeding frame 71 is located outside the needle dispensing hole 311. A bearing groove is provided on the needle dispensing platform 31 located below the feeding frame 71. A bearing plate is slidably arranged on the bearing groove along the length direction of the machine body 1. The upper surface of the bearing plate is flush with the upper surface of the needle dispensing platform 31. The feeding frame 71 is used to vertically stack multiple retainers 9. The retainer 9 located at the lowest position abuts against the upper surface of the bearing plate for positioning. When the moving platform 34 slides, it slides with the bearing plate so that the weight of the multiple retainers 9 will not affect the sliding of the moving platform 34.

[0108] Reference Figure 1 , Figure 8-11 The bottom of the feeding rack 71 has a discharge hole 75 that runs through the length of the machine body 1. The discharge hole 75 allows the retainer 9 to pass through and move onto the positioning post 312. A moving part 92 is fixedly installed on the upper surface of the machine body 1 and on the side of the feeding rack 71 away from the needle feeding table 31. The moving part 92 is an electric push rod. The piston rod of the moving part 92 is set along the length of the machine body 1. The feeding block 72 is fixedly installed on the piston rod of the electric push rod. The top of the feeding plate 73 is rotatably installed on the end of the feeding block 72 near the feeding rack 71 through the rotating shaft 76. The elastic element 74 is a spring. The elastic element 74 is located below the rotating shaft 76 and its two ends are fixedly connected to the side wall of the feeding block 72 and the feeding plate 73 near the feeding block 72. In the initial state, the bottom end of the feeding plate 73 is inclined towards the side near the feeding rack 71.

[0109] The feeding block 72 is activated, pushing the feeding block 72 and the feeding plate 73 closer to the feeding frame 71, so that the feeding plate 73 and the feeding block 72 enter the feeding frame 71 through the discharge hole 75. The bottom end of the feeding plate 73 first contacts the retainer 9 and is then pushed to a vertical position. The feeding plate 73 continues to move, pushing the retainer 9 to move. At the same time, the feeding block 72 fills the position of the retainer 9 that has been moved away and is used to support and position the retainer 9 in the feeding frame 71, so that the retainer 9 moves toward the positioning post 312 until the retainer 9 moves to be aligned with the positioning post 312 and then falls downward under the action of gravity.

[0110] As the retainer 9 moves downward, the feed plate 73 continues to move, causing the feed plate 73 located below the rotating shaft 76 to contact the top of the retainer 9. The bottom of the feed plate 73 is pushed to the side closer to the feed block 72, so that the feed plate 73 exerts downward pressure on the retainer 9, allowing the retainer 9 to be accurately fitted onto the positioning post 312 and positioned against the needle release plate 32. Then, the feed block 72 and the feed plate 73 move back, and the feed plate 73 rotates under the action of the elastic element 74. The feed block 72 first separates from the retainer 9, and the retainer 9 moves downward and contacts the feed plate 73. The feed plate 73 is squeezed and rotated, thus buffering the impact force on the retainer 9. Finally, the retainer 9 at the lowest point is placed on the needle release table 31 for positioning, thus completing the fitting of the retainer 9 onto the positioning post 312.

[0111] The pressing assembly 8 includes telescopic components 81 and pressure plates 82. Multiple telescopic components 81 are provided. The telescopic components 81 are electric push rods or hydraulic cylinders. The telescopic components 81 are fixedly installed on the opposite side walls of the adsorption platform 38, and the piston rod of the telescopic component 81 extends vertically downward to the bottom of the adsorption platform 38. The pressure plates 82 are fixedly installed on the piston rods of the multiple telescopic components 81, and multiple pressure holes 83 are opened on the pressure plates 82. In the initial state, the pressure plates 82 abut against the lower surface of the mounting plate, and the adsorption component 39 extends to the bottom of the pressure plates 82 through the pressure holes 83.

[0112] When the adsorption component 39 adsorbs and grips multiple needle rollers, the telescopic component 81 is not activated. After the adsorption component 39 adsorbs and grips the retainer 9 and places it on the outer ring 14, the adsorption component 39 releases its adsorption effect on the retainer 9, and the telescopic component 81 is activated to drive the pressure plate 82 to move down. The pressure plate 82 moves down and pushes the retainer 9 and multiple needle rollers into the inner side of the outer ring 14, so that the multiple needle rollers rotate and are installed on multiple outer grooves and multiple windows of the retainer 9.

[0113] The working principle of this application embodiment is as follows:

[0114] When assembling a bearing without a cage 9, the feeding mechanism 7 and the pressing assembly 8 are not activated. The adsorption component 39 adsorbs, grips, and conveys multiple needle rollers, which are then sequentially passed through the pressing mechanism 4 and the pressing mechanism 5 to complete the bearing assembly. When assembling a bearing with a cage 9, a suitable adsorption component 39 is replaced, and then the adsorption component 39 is used to adsorb, grip, and convey the cage 9. At this time, the pressing assembly 8 is activated to press the cage 9 and multiple needle rollers into the outer ring 14. The pressing mechanism 4 is not activated, thus enabling the assembly of both types of bearings and allowing for free selection, thereby improving the assembly efficiency and quality of the bearings.

[0115] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A needle roller bearing assembly device, characterized in that: The system includes a body (1), a lubrication mechanism (2), a needle-releasing mechanism (3), a needle-pressing mechanism (4), a pressing mechanism (5), and a pushing mechanism (6). The lubrication mechanism (2) is used to add grease to multiple outer grooves of the outer ring (14). The needle-pressing mechanism (4) is used to push multiple needle rollers to be clamped onto multiple outer grooves for positioning. The pressing mechanism (5) is used to press the inner ring into the inner side of the outer ring (14). The pushing mechanism (6) is activated so that the outer ring (14) passes through the lubrication mechanism (2), the needle-releasing mechanism (3), the needle-pressing mechanism (4), and the pressing mechanism (5) in sequence and is output, clamping and positioning the outer ring (14) and realizing the simultaneous operation of four processes. The needle dispensing mechanism (3) includes: A needle feeding platform (31) is set on the machine body (1) and has a needle feeding hole (311). The needle feeding plate (32) is rotatably mounted on the machine body (1) and located inside the needle feeding hole (311), and has a number of needle feeding slots (321) arranged in a circular array, the same as the number of outer slots. Drive component (33) is used to drive the needle feeding plate (32) to rotate; The mobile platform (34) is slidably mounted on the body (1); The needle release tube (35) is set on the moving table (34) and vertically connected to the vibrating feeder (11), so that the rollers are vertically stacked and placed in the needle release tube (35) and the rollers at the lowest position are positioned against the needle release table (31). The needle placement assembly (36) is used to pick up the needles located in multiple needle placement slots (321) and place them inside the outer ring (14) and position them by the viscosity of the grease, so that the multiple needles are aligned with the multiple outer slots; the needle placement tube (35) moves to align with a certain needle placement slot (321) and causes the needles to fall and be placed on the needle placement slot (321); the needle placement disc (32) rotates to place multiple needles into multiple needle placement slots (321).

2. The needle roller bearing assembly equipment according to claim 1, characterized in that: The driving component (33) includes: Drive unit (331) is used to drive the needle feeding plate (32) to rotate; The detection element (332) is set on the moving stage (34) and aligned with the needle release tube (35) and the two adjacent needle release slots (321). The detection element (332) is used to detect whether the needle release slot (321) is filled with a needle roller and is electrically connected to the drive element (331). The needle release plate (32) drives the needle release slot (321) after the needle roller is placed to rotate to be aligned with the detection element (332) and is detected by the detection element (332). If there is a needle roller in the needle release slot (321), the needle release plate (32) continues to rotate normally. If there is no needle roller in the needle release slot (321), the needle release plate (32) reverses and replenishes the needle roller in the needle release slot (321).

3. The needle roller bearing assembly equipment according to claim 1, characterized in that: The pushing mechanism (6) includes: Conveyor belt one (61) and conveyor belt two (62) are set on both ends of the machine body (1) and are used to transport the outer ring (14) and make the outer ring (14) transport along the length direction of the machine body (1); A push bar (63) is set on the body (1) and along the length of the body (1); Push block 1 (64) and slide it along the length direction of the body (1); Push block two (65) is slidably disposed along the length direction perpendicular to the length direction of the machine body (1) and is provided with multiple push slots (66) spaced along the length direction of the machine body (1); push block two (65) is close to the outer ring (14) and pushes the outer ring (14) to be snapped onto the push slot (66) and pushes the machine body (1) located on the machine body (1) to abut against the push bar (63) for positioning; push block one (64) starts to push the outer ring (14) located on the first conveyor belt (61) to move to the machine body (1) and make the outer ring (14) pass through the oiling mechanism (2), the needle release mechanism (3), the needle pressing mechanism (4), the pressing mechanism (5) in sequence and finally move to the second conveyor belt (62) for conveying.

4. The needle roller bearing assembly equipment according to claim 1, characterized in that: The needle feeding plate (32) is coaxially provided with a positioning post (312) for positioning the retainer (9) and located inside multiple needle feeding slots (321). There are two needle feeding tables (31) that slide towards each other on the machine body (1). The machine body (1) is provided with a feeding mechanism (7) for feeding the retainer (9) onto the positioning post (312). The feeding mechanism (7) is used to feed the retainer (9) onto the positioning post (312) for positioning. After multiple needle rollers are placed on multiple needle feeding slots (321), the two needle feeding tables (31) move closer to each other to push the needle rollers to be snapped into the multiple windows of the retainer (9) for positioning. The two needle feeding tables (31) move back to facilitate the continued placement of the retainer (9) and needle rollers. The needle release assembly (36) adsorbs and grips the conveying needle rollers while the feeding mechanism (7) is not started, or the feeding mechanism (7) is started while the needle release assembly (36) adsorbs and grips the conveying retainer (9).

5. The needle roller bearing assembly equipment according to claim 4, characterized in that: The feeding mechanism (7) includes: The feeding rack (71) is set on the machine body (1) and is used to vertically stack multiple retainers (9). The feeding block (72) is slidably disposed on the upper surface of the needle dispensing table (31) in the direction of approaching or moving away from the positioning column (312); The top of the feeding plate (73) is rotatably mounted on the side wall of the feeding block (72); The elastic element (74) is connected to the feed plate (73) and the feed block (72) respectively, and the bottom end of the feed plate (73) is tilted towards the cage (9); The feed plate (73) pushes the retainer (9) located at the lowest position toward the positioning post (312) and causes the feed block (72) to fill the position of the removed retainer (9) and to position the retainer (9); when the retainer (9) moves down and is fitted onto the positioning post (312), the feed plate (73) generates a downward pushing force on the retainer (9) under the action of the elastic member (74); the feed block (72) drives the feed plate (73) to move back and causes the retainer (9) located at the lowest position to move down and be placed on the needle release table (31).

6. The needle roller bearing assembly equipment according to claim 4, characterized in that: The needle delivery assembly (36) includes: The adsorption stage (37) is horizontally slidably set on the body (1); Adsorption stage 2 (38) is vertically slidably mounted on adsorption stage 1 (37); Adsorption element (39) is used to adsorb and grasp the roller needles located in the needle release groove (321); Alternatively, it can be used to adsorb, grasp and transport the retainer (9), wherein the adsorption platform (38) is provided with a pressing component (8) for pressing the retainer (9) into the inner side of the outer ring (14).

7. The needle roller bearing assembly equipment according to claim 6, characterized in that: The press-in assembly (8) includes: The telescopic component (81) is set on the second adsorption platform (38) and the piston rod is set vertically downward; The pressure plate (82) is set on the piston rod of the telescopic member (81) and has a pressure hole (83). In the initial state, the pressure plate (82) abuts against the lower surface of the adsorption platform (38) and the adsorption member (39) extends through the pressure hole (83) to the bottom of the pressure plate (82). After the retainer (9) is placed on the outer ring (14), the pressure plate (82) moves down to press the retainer (9) and multiple needle rollers into the outer ring (14). When the adsorption member (39) adsorbs the retainer (9) for conveying, the needle roller mechanism (4) is not activated.

8. The needle roller bearing assembly equipment according to claim 1, characterized in that: The needle pressing mechanism (4) includes: The needle holder (41) is vertically slidably mounted on the machine body (1); The pressure needle (42) is set on the pressure base (51) and is frustoconical in shape, with the top diameter being larger than the bottom diameter; Multiple pressure needle rings (43) are inclined and slidably disposed on the outer wall of the pressure needle head (42) and arranged in a circular array around the axis of the pressure needle head (42); Multiple elastic elements (44) are correspondingly arranged with multiple needle rings (43) and their two ends are respectively connected to the needle seat (41) and the needle rings (43); the needle seat (41) moves down to drive multiple needle rings (43) to extend between multiple needle rollers until they abut against the machine body (1) for positioning; the needle seat (41) continues to move down to drive the needle head (42) to move down to push multiple needle rings (43) to push the needle rollers to snap into and install on multiple outer grooves; the needle seat (41) moves up to make multiple needle rings (43) move away from the needle rollers under the elastic force of the elastic elements (44).

9. The needle roller bearing assembly equipment according to claim 1, characterized in that: The pressing mechanism (5) includes: The press-fitting seat (51) is vertically slidably mounted on the machine body (1); The conveying assembly (52) is used to convey the inner ring onto a plurality of needle rollers, and the press seat (51) moves down to press the inner ring into the inner side of the outer ring (14) and cause the plurality of needle rollers to rotate and be mounted on the outer groove and the inner groove.

10. A needle roller bearing assembly device according to claim 9, characterized in that: The conveying assembly (52) includes: The storage rack (53) is set on the machine body (1) and multiple inner rings are stacked vertically; The push plate (54) is horizontally slidably disposed on the machine body (1) and is used to push the inner ring located at the lowest position to move and place it on multiple needle rollers and to support and position the inner ring located in the storage rack (53).

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