Double-row needle assembly device for planetary gears

Abstract

The application relates to the technical field of planetary gear assembly, and particularly discloses a double-row needle assembly device for planetary gears, which comprises a rack, a positioning part, a feeding part, a detection part and two assembly parts. First, the planetary gear is placed on the positioning part, and the planetary gear is positioned through the positioning part; then the needle is conveyed to the needle assembly assembly through the feeding part; since the rotating axis of the needle assembly assembly and the axis of the planetary gear core shaft are located on the same straight line, the needle can be assembled to the planetary gear through the needle assembly assembly; after the assembly is completed, the detection part is used to detect whether the planetary gear lacks the needle, so that the planetary gear lacking the needle can be found in time. The double-row needle assembly device for planetary gears can realize the synchronous automatic assembly of the double-row needle of the planetary gear, is high in efficiency, and effectively solves the problem of low production efficiency of the double-row needle assembly of the planetary gear in the prior art.

Description

Technical Field

[0001] This invention relates to the field of planetary gear assembly technology, and in particular to a double-row needle roller assembly device for planetary gears. Background Technology

[0002] Planetary gears are widely used in heavy-duty vehicles due to their high load capacity and large transmission ratio. To save space or due to structural limitations, most planetary gears use needle rollers instead of full bearings between the gear and the shaft. The assembly of the needle rollers is a critical process in planetary gear assembly. The quality and efficiency of the needle roller assembly directly affect the overall vehicle performance and the production efficiency of the planetary gears. In related technologies, needle roller assembly is generally done manually, which results in low production efficiency and a high risk of missing needles. Summary of the Invention

[0003] The purpose of this invention is to provide a double-row needle roller assembly device for planetary gears, so as to solve the problem of low production efficiency in the double-row needle roller assembly of planetary gears in the prior art.

[0004] To address the aforementioned problems, the present invention provides a double-row needle roller assembly device for planetary gears. This device includes: a frame; a positioning part disposed on the frame, the positioning part being vertically movable and capable of positioning the planetary gears; two assembly parts located on opposite sides of the positioning part, each assembly part including a moving component and a needle-loading component. The moving component is disposed on the frame and movable along the axial direction of the planetary gears, the needle-loading component is rotatably disposed on the moving component and movable along the axial direction of the planetary gears, the rotation axis of the needle-loading component being collinear with the axis of the planetary gear's spindle, and the needle-loading component capable of assembling needle rollers onto the planetary gears; a feeding part located on one side of the frame, the feeding part capable of conveying needle rollers to the needle-loading component; and a detection part disposed on the frame, the detection part capable of detecting whether the planetary gears are missing needle rollers.

[0005] As an optional technical solution for the double-row needle roller assembly device of planetary gears, the needle loading assembly includes an adjustment structure, a needle pusher structure, and a needle roller sorter. The adjustment structure is rotatably mounted on the moving assembly and connected to the needle roller sorter. The needle pusher structure is mounted on the moving assembly and can move along the axial direction of the planetary gear. The needle pusher structure is sleeved on the needle roller sorter. The feeding part can transport the needle rollers to the needle roller sorter, and the needle pusher structure can push the needle rollers on the needle roller sorter to the planetary gear.

[0006] As an optional technical solution for the double-row needle roller assembly device of planetary gears, the adjustment structure includes a rotating shaft and a detection element. The needle roller sequencer has multiple needle roller arcs distributed circumferentially along the needle roller sequencer. The needle roller sequencer and the detection element are respectively connected to both ends of the rotating shaft. The detection element can detect whether there are needle rollers in each needle roller arc.

[0007] As an optional technical solution for the double-row needle roller assembly device for planetary gears, the pusher structure includes a needle roller sleeve and a drive member. The drive member is disposed on the moving component, and the needle roller sleeve is sleeved on the side of the needle roller sequencer away from the planetary gear. The drive member and the needle roller sleeve are drivenly connected to drive the needle roller sleeve to push the needles located on the needle roller sequencer to the planetary gear.

[0008] As an optional technical solution for the double-row needle roller assembly device for planetary gears, the feeding section includes a feeding vibratory plate, a needle roller acceleration structure, and a dropping structure. The feeding vibratory plate is located on one side of the frame. The needle roller acceleration structure is located at the outlet of the feeding vibratory plate and communicates with the dropping structure. The dropping structure is located on the moving component. The needle roller acceleration structure can accelerate the needle rollers and then transport them to the dropping structure. The dropping structure transports the needle rollers to the needle loading component.

[0009] As an optional technical solution for the double-row needle roller assembly device of planetary gears, the needle roller acceleration structure includes an air blowing pipe and an acceleration block. The inlet of the acceleration block is connected to the outlet of the feeding vibratory plate, and the outlet of the acceleration block is connected to the unloading structure. The air blowing pipe is located at the inlet of the acceleration block and can blow air onto the needle rollers.

[0010] As an optional technical solution for the double-row needle roller assembly device of planetary gears, the blanking structure includes a needle roller blanking seat and an impacting element. The needle roller blanking seat has a needle roller material channel and a needle roller sorting cavity that are interconnected. The needle loading assembly has a needle roller sorter. The impacting element is disposed on the top of the needle roller blanking seat and is capable of striking the needle rollers located in the needle roller material channel. The needle roller material channel is connected to the needle roller acceleration structure. The needle roller sorter is inserted into the needle roller sorting cavity. The needle roller material channel conveys the needle rollers to the needle roller sorter through the needle roller sorting cavity.

[0011] As an optional technical solution for the double-row needle roller assembly device for planetary gears, the detection unit includes a detection seat, a detection structure, and two ejection structures. The detection seat is mounted on the frame and can position the planetary gear. The two ejection structures are located on both sides of the detection seat. The ejection structures are telescopically configured to eject the needle rollers on the planetary gear located on the detection seat. The detection structure is vertically mounted on the top of the detection seat and can detect whether the needle rollers of the planetary gear ejected by the ejection structure are missing needles.

[0012] As an optional technical solution for the double-row needle roller assembly device of planetary gears, the detection structure includes a first adjusting member, a second adjusting member, and a detection probe. The first adjusting member is vertically and flexibly disposed on the top of the detection seat, the second adjusting member is retractably disposed on the first adjusting member, and the detection probe is disposed on the second adjusting member and can abut against the needle rollers of the planetary gear.

[0013] As an optional technical solution for the double-row needle roller assembly device of planetary gears, the ejection structure includes a needle roller pusher sleeve and an ejector. The ejector is disposed on the frame, and the ejector and the needle roller pusher sleeve are driven to drive the needle roller pusher sleeve to eject the needle rollers of the planetary gear.

[0014] The beneficial effects of this invention are as follows:

[0015] This invention provides a double-row needle roller assembly device for planetary gears. The device includes a frame, a positioning section, a feeding section, a detection section, and two assembly sections. Each assembly section includes a moving component and a needle-loading component. Using this device, the planetary gear is first placed on the positioning section and positioned therein. Then, the feeding section conveys the needle rollers to the needle-loading component. Since the rotation axis of the needle-loading component is collinear with the axis of the planetary gear spindle, the needle rollers can be assembled onto the planetary gear. After assembly, the detection section checks for missing needle rollers, allowing for timely identification of any missing rollers. This double-row needle roller assembly device enables synchronous and automatic assembly of double-row needle rollers for planetary gears with high efficiency, effectively solving the problem of low production efficiency in existing double-row needle roller assembly techniques. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the planetary gear structure in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the double-row needle roller assembly device for planetary gears in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the feeding section in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the needle roller acceleration structure in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the material feeding structure in an embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the needle roller blanking seat in an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the positioning part in an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the assembly part in an embodiment of the present invention;

[0024] Figure 9 This is a cross-sectional view of the assembly part in an embodiment of the present invention;

[0025] Figure 10 This is a schematic diagram of the detection unit in an embodiment of the present invention;

[0026] Figure 11 This is a schematic diagram of the detection structure in an embodiment of the present invention.

[0027] In the picture:

[0028] 1. Planetary gears;

[0029] 11. Gear; 12. Mandrel; 13. Right needle roller ring; 14. Spacer ring; 15. Left needle roller ring;

[0030] 2. Loading section;

[0031] 21. Feeding vibratory feeder; 22. Needle roller acceleration structure; 221. Air blowing pipe; 222. Accelerator block; 23. Needle roller conveyor pipe; 24. Material dropping structure; 241. Needle roller material dropping seat; 242. Impact component; 243. Electromagnet mounting base; 244. Photoelectric sensor; 245. Needle roller rear baffle; 246. Needle roller front baffle; 247. Needle roller material channel; 2471. Baffle mounting hole; 2472. Photoelectric sensor mounting hole; 2473. Electromagnet mounting base mounting hole; 2474. Impact hole; 2475. Conveyor pipe seat mounting hole; 2476. Needle inlet hole; 2477. Material discharge slot; 2478. Needle roller sorting chamber; 25. Vibratory feeder base;

[0032] 3. Positioning section;

[0033] 31. Base; 32. Cylinder; 33. Positioning bracket; 331. Positioning surface;

[0034] 4. Assembly Department;

[0035] 41. Moving component; 411. Cylinder; 412. Cylinder seat; 413. Cylinder connector; 414. Base plate; 415. Slider; 416. Guide rail; 417. Mounting plate; 42. Detector; 421. Inductive switch bracket; 422. Inductive switch; 423. Number generator; 424. Spacer; 425. Protective cover; 43. Adjustment structure; 431. Large synchronous pulley; 432. Toothed belt; 433. Small synchronous pulley; 434. Motor bracket; 435. Drive motor; 436. Intermediate plate; 44. Needle loading assembly; 441. Bearing seat; 442. Limit block; 443. Needle roller sequencer; 444. Needle roller sleeve; 445. Bearing; 446. Sleeve mounting plate; 447. Needle roller pushing cylinder; 448. Rotating shaft; 45. Base;

[0036] 5. Testing Department;

[0037] 51. Ejection structure; 511. Ejection base; 512. Cylinder bracket; 513. Cylinder; 514. Needle roller sleeve; 515. Guide sleeve; 52. Frame assembly; 521. Column base; 522. Column; 523. Crossbeam; 53. Detection structure; 531. Telescopic cylinder; 532. Actuation assembly; 5321. Detection cylinder; 5322. Cylinder connecting plate; 5323. Detection probe; 54. Detection seat; 541. Positioning seat; 542. Edge retainer;

[0038] 6. Frame. Detailed Implementation

[0039] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of 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.

[0040] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] like Figures 1 to 11As shown, this embodiment provides a double-row needle roller assembly device for planetary gears. The device includes a frame 6, a positioning part 3, a feeding part 2, a detection part 5, and two assembly parts 4. The positioning part 3 is mounted on the frame 6 and is vertically movable, capable of positioning the planetary gear 1. The two assembly parts 4 are located on either side of the positioning part 3. Each assembly part 4 includes a moving component 41 and a needle-loading component 44. The moving component 41 is mounted on the frame 6 and can move axially along the planetary gear 1. The needle-loading component 44 is rotatably mounted on the moving component 41 and can move axially along the planetary gear 1. The rotation axis of the needle-loading component 44 is collinear with the axis of the spindle 12 of the planetary gear 1, and the needle-loading component 44 can assemble needle rollers onto the planetary gear 1. The feeding part 2 is located on one side of the frame 6 and can transport needle rollers to the needle-loading component 44. The detection part 5 is mounted on the frame 6 and can detect whether the planetary gear 1 is missing needle rollers.

[0044] The planetary gear double-row needle roller assembly device of the present invention first places the planetary gear 1 on the positioning part 3 and positions it. Then, the needle rollers are conveyed to the needle mounting assembly 44 through the feeding part 2. Since the rotation axis of the needle mounting assembly 44 is on the same straight line as the axis of the spindle 12 of the planetary gear 1, the needle rollers can be assembled onto the planetary gear 1 using the needle mounting assembly 44. After assembly, the detection part 5 detects whether the planetary gear 1 is missing needle rollers, so as to promptly identify planetary gear 1 with missing needle rollers. Using the planetary gear double-row needle roller assembly device of the present invention, the synchronous automatic assembly of the double-row needle rollers of the planetary gear can be completed with high efficiency, effectively solving the problem of low production efficiency in the assembly of double-row needle rollers of planetary gears in the prior art.

[0045] Optionally, such as Figure 1 As shown, the planetary gear 1 includes a gear 11, a spindle 12, a right needle roller ring 13, a spacer ring 14, and a left needle roller ring 15.

[0046] Optionally, the assembly part 4 also includes a base 45, and the moving assembly 41 includes a cylinder 411, a cylinder seat 412, a cylinder connector 413, a base plate 414, a slider 415, a guide rail 416, and a mounting plate 417. The slider 415 is mounted on the upper surface of the base 45, and the guide rail 416 cooperates with the slider 415. The upper surface of the guide rail 416 is fixed to the lower surface of the base plate 414. The mounting plate 417 is mounted on the leftmost side of the upper surface of the base plate 414, with its left side aligned with the left side of the base plate 414. A connector mounting hole is designed in the middle of the right side of the base plate 414, and the cylinder connector 413 is installed in the connector mounting hole. The cylinder 411 is connected to the cylinder connector 413 through a thread at the end of its piston rod, and its function is to push the base plate 414 to move left and right. The cylinder seat 412 is mounted on the right side of the base plate 414, and its left side is parallel to the inside of the right side of the base plate 414. The cylinder seat 412 is fixedly connected to the frame 6.

[0047] In some embodiments, the needle loading assembly 44 includes an adjustment structure 43, a needle pusher structure, and a needle roller sorter 443. The adjustment structure 43 is rotatably mounted on the moving assembly 41 and connected to the needle roller sorter 443. The needle pusher structure is mounted on the moving assembly 41 and is axially movable along the planetary gear 1. The needle pusher structure is sleeved on the needle roller sorter 443. The feeding unit 2 can transport needle rollers to the needle roller sorter 443, and the needle pusher structure can push the needle rollers on the needle roller sorter 443 to the planetary gear 1. With this configuration, the adjustment structure 43 drives the needle roller sorter 443 to rotate, the feeding unit 2 can fill the needle roller sorter 443 with needle rollers, and then the needle pusher structure pushes the needle rollers on the needle roller sorter 443 to the planetary gear 1, thereby achieving the purpose of filling the planetary gear 1 with needle rollers.

[0048] In this embodiment, the adjustment structure 43 includes a rotating shaft 448 and a detection element 42, and the needle roller sequencer 443 has multiple needle roller arcs distributed circumferentially along the needle roller sequencer 443. The needle roller sequencer 443 and the detection element 42 are respectively connected to the two ends of the rotating shaft 448, so that the detection element 42 can be used to detect whether there are needle rollers in each needle roller arc.

[0049] Optionally, the adjustment structure 43 also includes a drive motor 435, a large synchronous pulley 431, a toothed belt 432, a small synchronous pulley 433, a motor bracket 434, and an intermediate plate 436. The motor bracket 434 is mounted on the upper surface of the intermediate plate 436, the drive motor 435 is mounted on the motor bracket 434, and its function is to drive the rotating shaft 448 to rotate. The small synchronous pulley 433 is mounted on the output shaft of the drive motor 435, and the large synchronous pulley 431 is mounted on one end of the rotating shaft 448. The two are transmitted through the toothed belt 432.

[0050] Optionally, the detection component 42 includes a sensor switch bracket 421, a sensor switch 422, a number dispenser 423, a spacer 424, and a protective cover 425. The sensor switch bracket 421 is mounted on the upper right side of the upper surface of the base plate 414. The sensor switch 422 passes through a mounting hole in the upper part of the sensor switch bracket 421 and is secured by a nut. Its function is to detect the rotating arm of the number dispenser 423, and thus detect whether the needle roller sequencer 443 has rotated 360°, ensuring that all needle rollers are mounted on the needle roller sequencer 443. The number dispenser 423 is coaxial with the rotating shaft 448 and is mounted on the right end of the rotating shaft 448. A spacer 424 is designed between the number dispenser 423 and the rotating shaft 448. The function of the spacer 424 is to ensure that the number dispenser 423 is outside the protective cover 425.

[0051] In some embodiments, the pusher structure includes a needle roller sleeve 444 and a drive member, wherein the drive member is disposed on the moving component 41, and the needle roller sleeve 444 is sleeved on the side of the needle roller sequencer 443 away from the planetary gear 1, thereby drivingly connecting the drive member and the needle roller sleeve 444. The drive member drives the needle roller sleeve 444 to move, thereby achieving the purpose of pushing the needle rollers located on the needle roller sequencer 443 to the planetary gear 1.

[0052] Optionally, the pusher needle structure also includes a bearing housing 441, a limiting block 442, and a bearing 445. The driving component includes a sleeve mounting plate 446 and a pusher needle cylinder 447. The bearing housing 441 is mounted on the base plate 414, the rotating shaft 448 is mounted on the bearing housing 441 via the bearing 445, and the pusher needle cylinder 447 is mounted on the bearing housing 441 via the sleeve mounting plate 446. The pusher needle cylinder 447 and the needle sleeve 444 are drivenly connected to drive the needle sleeve 444 to move. The intermediate plate 436 is mounted on the upper surface of the bearing housing 441.

[0053] In some embodiments, the feeding unit 2 includes a feeding vibratory feeder 21, a needle roller acceleration structure 22, and a dropping structure 24. The feeding vibratory feeder 21 is located on one side of the frame 6. The needle roller acceleration structure 22 is disposed at the discharge port of the feeding vibratory feeder 21 and communicates with the dropping structure 24. The dropping structure 24 is disposed on the moving component 41. The needle rollers can be accelerated by the needle roller acceleration structure 22 and then conveyed to the dropping structure 24. Subsequently, the dropping structure 24 conveys the needle rollers to the needle loading component 44.

[0054] Optionally, the feeding section 2 also includes a vibratory feeder base 25, on which the feeding vibratory feeder 21 is mounted.

[0055] Furthermore, the needle roller acceleration structure 22 includes an air blowing pipe 221 and an acceleration block 222. The inlet of the acceleration block 222 is connected to the outlet of the feeding vibratory plate 21, and the outlet of the acceleration block 222 is connected to the unloading structure 24. The air blowing pipe 221 is located at the inlet of the acceleration block 222. This arrangement allows air to be blown onto the needle rollers, thereby achieving the effect of accelerating the needle rollers.

[0056] Optionally, the inlets of the air blowing pipe 221 and the acceleration block 222 are inclined to further improve the acceleration effect on the needle roller.

[0057] In this embodiment, the feeding structure 24 includes a needle roller feeding seat 241 and an impacting member 242. The needle roller feeding seat 241 has a needle roller channel 247 and a needle roller sorting cavity 2478 that are interconnected, and the needle loading assembly 44 has a needle roller sorter 443. The impacting member 242 is disposed on the top of the needle roller feeding seat 241 and can impact the needle rollers located in the needle roller channel 247, thus preventing the needle rollers from clogging. At the same time, the needle roller channel 247 is connected to the needle roller acceleration structure 22, and the needle roller sorter 443 is inserted into the needle roller sorting cavity 2478. With this configuration, the needle roller channel 247 can convey the needle rollers to the needle roller sorter 443 through the needle roller sorting cavity 2478.

[0058] Optionally, the material feeding structure 24 also includes a needle roller conveyor pipe 23, and the acceleration block 222 is connected to the needle roller conveyor pipe 23 and the needle roller channel 247.

[0059] Optionally, the blanking structure 24 also includes an electromagnet mounting base 243, a photoelectric sensor 244, a needle roller rear baffle 245, and a needle roller front baffle 246. The needle roller front baffle 246 and the needle roller rear baffle 245 are respectively installed on the front and rear sides of the needle roller channel 247. Their function is to prevent the needle rollers from detaching from the needle roller channel 247 when they fall. The striking element 242 is mounted in the center of the upper surface of the needle roller channel 247 via the electromagnet mounting base 243. Its function is to continuously extend and retract when the photoelectric sensor 244 sends a needle-missing signal, knocking out any needle rollers that may be stuck in the needle roller channel 247. Photoelectric sensor mounting holes 2472 are designed on the upper part of the left and right sides of the needle roller channel 247, in which photoelectric sensors 244 are installed. Their function is to send a needle-missing signal when the sensor is not obstructed.

[0060] Optionally, the needle roller feeder 241 also has a baffle mounting hole 2471, a photoelectric sensor mounting hole 2472, an electromagnet mounting hole 2473, an impact hole 2474, and a conveyor tube mounting hole 2475. The needle roller feed channel 247 includes a needle inlet hole 2476 and a feed slot 2477. The baffle mounting hole 2471 facilitates the installation of the needle roller rear baffle 245 and the needle roller front baffle 246. The photoelectric sensor mounting hole 2472 facilitates the installation of the photoelectric sensor 244. The electromagnet mounting hole 2473 facilitates the installation of the electromagnet mounting seat 243. The impact hole 2474 facilitates the insertion of the impacting element 242 into the needle roller feed channel 247. The conveyor tube mounting hole 2475 facilitates the installation of the needle roller feeder 241.

[0061] In some embodiments, the detection unit 5 includes a detection seat 54, a detection structure 53, and two ejection structures 51. The detection seat 54 is mounted on the frame 6 and is capable of positioning the planetary gear 1. The two ejection structures 51 are located on both sides of the detection seat 54. The ejection structures 51 are telescopically mounted so as to eject the needle rollers on the planetary gear 1 located on the detection seat 54. The detection structure 53 is vertically mounted on the top of the detection seat 54 and can be used to detect whether the needle rollers of the planetary gear 1 ejected by the ejection structure 51 are missing needles.

[0062] Furthermore, the detection structure 53 includes a first adjusting member, a second adjusting member, and a detection probe 5323. The first adjusting member is vertically and flexibly mounted on the top of the detection seat 54, the second adjusting member is retractably mounted on the first adjusting member, and the detection probe 5323 is mounted on the second adjusting member. This allows the position of the detection probe 5323 to be adjusted as needed to engage with the needle rollers of the planetary gear 1, thereby determining whether the needle rollers of the planetary gear 1 are missing.

[0063] Optionally, the first adjusting component may include, but is not limited to, a telescopic cylinder 531.

[0064] Optionally, the second adjusting component includes an actuation assembly 532, which includes a detection cylinder 5321 and a cylinder connecting plate 5322. One end of the cylinder connecting plate 5322 is connected to the piston of the telescopic cylinder 531, and the other end is fixed to the cylinder mounting hole of the detection cylinder 5321. The detection probe 5323 is installed in the middle of the right end face of the piston of the detection cylinder 5321, and its function is to strike the right needle roller ring 13 or the left needle roller ring 15 under the drive of the detection cylinder 5321.

[0065] Furthermore, the ejection structure 51 includes a needle roller pusher sleeve 514 and an ejector. The ejector is mounted on the frame 6 and is drivenly connected to the needle roller pusher sleeve 514 to drive the needle roller pusher sleeve 514 to eject the needles of the planetary gear 1.

[0066] Optionally, the ejection structure 51 further includes an ejection base 511, a cylinder bracket 512, a cylinder 513, a guide sleeve 515, and a frame assembly 52. ​​The frame assembly 52 includes a column base 521, a column 522, and a crossbeam 523. The cylinder bracket 512 is mounted on the ejection base 511, and the cylinder 513 is fixed to the cylinder bracket 512. The piston front end of the cylinder 513 is connected to a needle roller pusher sleeve 514, which can slide freely in the inner hole of the guide sleeve 515. When both sides of the needle roller pusher sleeves 514 extend simultaneously, the right needle roller ring 13 and the left needle roller ring 15 are pushed into place. When only one side of the needle roller pusher sleeve 514 extends, the right needle roller ring 13 or the left needle roller ring 15 on the opposite side will be pushed out of place by 5mm beyond the end face of the planetary gear 1. The guide sleeve 515 is coaxial with the needle roller pusher sleeve 514 and is installed in the middle of the ejection base 511. In frame assembly 52, column base 521 is mounted on the upper surface of ejection base 511, and column 522 is fixed at a position slightly rearward above it. A crossbeam 523 is installed at the plane position on the upper rear side of column 522, which is used to suspend detection structure 53.

[0067] Optionally, the detection seat 54 includes a positioning seat 541 and a retaining edge 542. The positioning seat 541 is fixed on the frame 6 and is installed in the middle of the ejection base 511. Its function is to position the planetary gear 1. The upper surface of the retaining edge 542 is flush with the upper surface of the positioning seat 541. The retaining edge 542 is used to axially limit the planetary gear 1.

[0068] Optionally, the positioning unit 3 includes a base 31, a positioning cylinder 32, and a positioning bracket 33. The positioning bracket 33 has a positioning surface 331. The base 31 is mounted on the frame 6 and its function is to position the planetary gear 1. The positioning cylinder 32 is installed in a specially designed mounting structure on the upper right side of the base 31 and is tightened with screws. Its function is to drive the positioning bracket 33 to move up and down. When the positioning cylinder 32 is fully extended, the mandrel 12 is lifted by the positioning bracket 33. At this time, the axis of the mandrel 12 is coaxial with the axis of the needle roller sequencer 443. When the positioning cylinder 32 retracts, the positioning bracket 33 falls, clearing the passage, and the needle roller sleeve 444 pushes in the needle roller. The positioning bracket 33 is installed at the end of the piston rod of the positioning cylinder 32 and its function is to perform secondary positioning of the mandrel 12. The positioning surface 331 can effectively position the planetary gear 1.

[0069] The working process of the double-row needle roller assembly device for planetary gears of the present invention is as follows:

[0070] Automatic feeding process:

[0071] The needle rollers pass through the feeding vibratory plate 21 and enter the accelerating block 222. The air blowing pipe 221 accelerates the needle rollers, causing them to travel rapidly through the needle roller conveying pipe 23. They then pass through the needle inlet hole 2476 and enter the needle roller material channel 247. After being blocked by the needle roller rear baffle 245, they enter the discharge slot 2477 and fall into the needle roller arc directly below it, completing the feeding of one needle roller. The drive motor 435 drives the small synchronous pulley 433 to rotate, and the power is transmitted through the toothed belt 432 to the large synchronous pulley 431. The large synchronous pulley drives the rotating shaft 448 to rotate, and the needle roller sorter 443 rotates synchronously with the rotating shaft 448. During the rotation of the needle roller sorter 443, the needle roller arc without needles faces the discharge slot 2477, and the next needle roller falls in. This process repeats until the needle roller sorter 443 rotates 360°, at which point all needle roller arcs are filled with needles. Under the constraint of the needle roller sorting cavity 2478, the needle roller will not come out of the needle roller arc.

[0072] Needle roller filling test process:

[0073] The needle roller sequencer 443 rotates 360°, and the issuing arm of the number dispenser 423, which is installed on the right end of the rotating shaft 448, passes through the front end of the sensing head of the induction switch 422 in four times. This detects that all the needle roller arcs are filled with needle rollers, and the needle roller assembly can be performed.

[0074] Gear positioning process in one step:

[0075] The planetary gear 1, lacking the left needle roller ring 15 and the right needle roller ring 13, is placed on the gear positioning part 3. The positioning cylinder 32 remains extended. The positioning arc surface of the seat 31 contacts the gear teeth of the gear 11 to position the gear 11. The positioning surface 331 of the positioning bracket 33 contacts the spindle 12 to position the axis of the spindle 12.

[0076] Needle roller assembly process:

[0077] Initially, the piston rod of cylinder 411 and the piston of the needle roller pusher cylinder 447 are both in the retracted position. When the piston of cylinder 411 extends to its final position, the needle roller sequencer 443 contacts the mandrel 12, and the limiting block 442 contacts the end face of the mandrel 12, completing the axial positioning of the mandrel 12. After positioning, the right needle roller ring 13 and the left needle roller ring 15 on the needle roller sequencer 443 are aligned with the gap between the gear 11 and the mandrel 12. The piston of positioning cylinder 32 retracts, causing the positioning bracket 33 to descend, clearing a path between the right needle roller ring 13 and the left needle roller ring 15 and the aforementioned gap. The piston of the needle roller pusher cylinder 447 (using a quick-release cylinder) extends, causing the needle roller sleeve 444 to extend, pushing the right needle roller ring 13 and the left needle roller ring 15 into the gap. Then, all components return to their initial state, completing the automatic assembly of the needle rollers.

[0078] Missing needle detection process:

[0079] Initial state: The piston rods of cylinder 513, telescopic cylinder 531, and detection cylinder 5321 are in the retracted position. Then, the upper arc surface of positioning seat 541 contacts gear 11 for radial positioning, and the flange 542 contacts both sides of gear 11 for axial positioning. The piston of cylinder 513 extends, and the needle roller pusher sleeve 514 extends, fully pushing the not-fully-assembled right needle roller ring 13 and left needle roller ring 15 into place. Then, one side of the needle roller pusher sleeve 514 retracts, and the other side extends, pushing the right needle roller ring 13 and left needle roller ring 15 out by 5mm. Then, the piston of the telescopic cylinder 531 extends, bringing the actuator 532 to the inspection position. The detection cylinder 5321 on the opposite side of the needle roller pusher sleeve 514 extends, causing the detection probe 5323 to extend. If there is no missing needle, the detection probe 5323 will collide with the needle, and the missing needle signal will not be triggered. However, if there is a missing needle, when the detection probe 5323 strikes the needle, the needle will push the remaining needles towards the missing needle position, thus freeing up the current position. The detection probe 5323 will then continue to extend, triggering the missing needle signal. The detection probe 5323 extends and retracts three times, ultimately issuing a missing needle signal or indicating no missing needle, and the device continues operation. Finally, all components return to their initial state.

[0080] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A double-row needle roller assembly device for planetary gears, characterized in that, include: Rack (6); A positioning part (3) is provided on the frame (6). The positioning part (3) is vertically detachable and can position the planetary gear (1). Two assembly parts (4) are located on both sides of the positioning part (3). The assembly part (4) includes a moving component (41) and a needle loading component (44). The moving component (41) is disposed on the frame (6) and can move along the axial direction of the planetary gear (1). The needle loading component (44) is rotatably disposed on the moving component (41) and can move along the axial direction of the planetary gear (1). The rotation axis of the needle loading component (44) is on the same straight line as the axis of the spindle (12) of the planetary gear (1). The needle loading component (44) can assemble needle rollers on the planetary gear (1). The feeding section (2) is located on one side of the frame (6) and can feed the needle rollers to the needle loading assembly (44). The detection unit (5) is provided on the frame (6) and is capable of detecting whether the planetary gear (1) is missing needle rollers; The needle loading assembly (44) includes an adjustment structure (43), a needle pusher structure, and a needle roller sorter (443). The adjustment structure (43) is rotatably mounted on the moving assembly (41) and connected to the needle roller sorter (443). The needle pusher structure is mounted on the moving assembly (41) and can move axially along the planetary gear (1). The needle pusher structure is sleeved on the needle roller sorter (443). The feeding part (2) can transport the needle rollers to the needle roller sorter (443). The needle pusher structure can push the needle rollers on the needle roller sorter (443) to the planetary gear (1). The feeding section (2) includes a feeding vibratory plate (21), a needle roller acceleration structure (22), and a dropping structure (24). The feeding vibratory plate (21) is located on one side of the frame (6). The needle roller acceleration structure (22) is located at the outlet of the feeding vibratory plate (21) and is connected to the dropping structure (24). The dropping structure (24) is located on the moving component (41). The needle roller acceleration structure (22) can accelerate the needle roller and then transport it to the dropping structure (24). The dropping structure (24) transports the needle roller to the needle loading component (44). The blanking structure (24) includes a needle roller blanking seat (241) and an impacting element (242). The needle roller blanking seat (241) has a needle roller channel (247) and a needle roller sorting cavity (2478) that are interconnected. The needle loading assembly (44) has a needle roller sorter (443). The impacting element (242) is disposed on the top of the needle roller blanking seat (241) and can strike the needle rollers located in the needle roller channel (247). The needle roller channel (247) is connected to the needle roller acceleration structure (22). The needle roller sorter (443) is inserted into the needle roller sorting cavity (2478). The needle roller channel (247) conveys the needle rollers to the needle roller sorter (443) through the needle roller sorting cavity (2478).

2. The double-row needle roller assembly device for planetary gears according to claim 1, characterized in that, The adjustment structure (43) includes a rotating shaft (448) and a detection element (42). The needle roller sorter (443) has multiple needle roller arcs distributed circumferentially along the needle roller sorter (443). The needle roller sorter (443) and the detection element (42) are respectively connected to the two ends of the rotating shaft (448). The detection element (42) can detect whether there is a needle roller in each needle roller arc.

3. The double-row needle roller assembly device for planetary gears according to claim 1, characterized in that, The pusher structure includes a needle roller sleeve (444) and a drive member. The drive member is disposed on the moving component (41). The needle roller sleeve (444) is sleeved on the side of the needle roller sequencer (443) away from the planetary gear (1). The drive member and the needle roller sleeve (444) are drivenly connected to drive the needle roller sleeve (444) to push the needle rollers located on the needle roller sequencer (443) to the planetary gear (1).

4. The double-row needle roller assembly device for planetary gears according to claim 1, characterized in that, The needle roller acceleration structure (22) includes an air blowing pipe (221) and an acceleration block (222). The inlet of the acceleration block (222) is connected to the outlet of the feeding vibratory plate (21), and the outlet of the acceleration block (222) is connected to the unloading structure (24). The air blowing pipe (221) is located at the inlet of the acceleration block (222) and can blow air onto the needle roller.

5. The double-row needle roller assembly device for planetary gears according to claim 1, characterized in that, The detection unit (5) includes a detection seat (54), a detection structure (53), and two ejection structures (51). The detection seat (54) is mounted on the frame (6) and can position the planetary gear (1). The two ejection structures (51) are located on both sides of the detection seat (54). The ejection structure (51) is telescopically mounted to eject the needle rollers on the planetary gear (1) located on the detection seat (54). The detection structure (53) is vertically mounted on the top of the detection seat (54) and can detect whether the needle rollers of the planetary gear (1) ejected by the ejection structure (51) are missing needles.

6. The double-row needle roller assembly device for planetary gears according to claim 5, characterized in that, The detection structure (53) includes a first adjustment member, a second adjustment member, and a detection probe (5323). The first adjustment member is vertically and vertically disposed on the top of the detection seat (54). The second adjustment member is retractably disposed on the first adjustment member. The detection probe (5323) is disposed on the second adjustment member and can abut against the needle roller of the planetary gear (1).

7. The double-row needle roller assembly device for planetary gears according to claim 5, characterized in that, The ejection structure (51) includes a needle roller pusher sleeve (514) and an ejector. The ejector is disposed on the frame (6). The ejector and the needle roller pusher sleeve (514) are driven to drive the needle roller pusher sleeve (514) to eject the needle rollers of the planetary gear (1).

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