Full-automatic assembling machine for needle roller bearing

Abstract

The application discloses a full-automatic assembling machine for needle roller bearings and relates to the technical field of needle roller bearing assembling. The full-automatic assembling machine for needle roller bearings comprises a workbench, wherein the workbench is sequentially provided with a feeding and detecting mechanism for feeding and detecting a retainer, a first feeding and assembling mechanism for feeding needle rollers and assembling the needle rollers into the retainer to obtain a semi-finished product, a second feeding and assembling mechanism for feeding an outer ring and assembling the semi-finished product into the outer ring to obtain a finished product, and a discharging and detecting mechanism for discharging and detecting the finished product. The workbench is further provided with a flow transfer mechanism for transferring the parts of the bearing between the feeding and detecting mechanism, the first feeding and assembling mechanism and the second feeding and assembling mechanism. The application can improve the efficiency of needle roller bearing assembling.

Description

Technical Field

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

[0002] Needle roller bearings are a type of bearing whose components typically include a cage, multiple needle rollers, and an outer ring. The assembly process involves the following steps: checking the cage dimensions for compliance; installing multiple needle rollers onto the qualified cage to form a cage assembly (semi-finished product); installing the cage assembly into the outer ring to obtain the finished needle roller bearing; and finally, inspecting the finished product before shipment. Currently, the loading, unloading, movement, and inspection of components in these steps involve significant manual labor. Each process is performed separately and is mostly semi-automated, resulting in time-consuming and labor-intensive work for workers, and low assembly efficiency for needle roller bearings. Summary of the Invention

[0003] To improve the efficiency of needle roller bearing assembly, this application provides a fully automatic needle roller bearing assembly machine.

[0004] The fully automatic assembly machine for needle roller bearings provided in this application adopts the following technical solution: An automatic needle roller bearing assembly machine includes a worktable. The worktable is sequentially equipped with a feeding and inspection mechanism for loading and inspecting a cage, a first feeding and assembly mechanism for loading needle rollers and installing them onto the cage to obtain a semi-finished product, and a second feeding and assembly mechanism for loading the outer ring and installing the semi-finished product onto the outer ring to obtain a finished product. The worktable also includes a transfer mechanism and a discharge and inspection mechanism for unloading and inspecting the finished product. The transfer mechanism allows bearing components to circulate between the feeding and inspection mechanism, the first feeding and assembly mechanism, and the second feeding and assembly mechanism. The automatic needle roller bearing assembly machine further includes a PLC controller, and the feeding and inspection mechanism, the first feeding and assembly mechanism, the second feeding and assembly mechanism, the discharge and inspection mechanism, and the transfer mechanism are all electrically connected to the PLC controller.

[0005] By adopting the above technical solution, the following actions can be achieved in sequence: feeding and inspecting the cage, installing several needle rollers on the cage to form a semi-finished product, feeding the outer ring and installing the semi-finished product on the outer ring to form a finished product, unloading the finished product and inspecting it; the above actions are automated by a PLC programmable controller, and this application improves the efficiency of needle roller bearing assembly.

[0006] Preferably, the first feeding assembly mechanism includes a first mounting frame disposed on a workbench, the first mounting frame having a through receiving hole, and a feeding drive assembly disposed on the first mounting frame. The feeding drive assembly is used to feed the retainer into the receiving hole and drive the retainer to rotate. The first mounting frame is also provided with a needle-punching assembly. A vibratory feeder is disposed on the workbench, the vibratory feeder being connected to the needle-punching assembly. The vibratory feeder is used to feed needle rollers to the needle-punching assembly, and the needle-punching assembly is used to punch the needle rollers into the rotating retainer to obtain a semi-finished product.

[0007] By adopting the above technical solution, the feeding and driving assembly can feed the cage into the receiving hole and drive the cage to rotate. At this time, in conjunction with the vibratory feeder for the needle rollers of the injection assembly, the injection assembly can orderly inject the needle rollers into the cage during the rotation of the cage to obtain a semi-finished product.

[0008] Preferably, the feeding drive assembly includes a second mounting frame disposed on a first mounting frame, the second mounting frame being provided with a reciprocating drive component one, the reciprocating drive component one being provided with a pressing shaft one, and the pressing shaft one being provided with an auxiliary rotary bearing; the first mounting frame is also provided with a second reciprocating drive component, the second reciprocating drive component two being provided with a third mounting frame, the third mounting frame being provided with a drive component, and the drive component being provided with a pressing shaft two; the pressing shaft one and the pressing shaft two are respectively located on both sides of the receiving hole, the reciprocating drive component two is used to drive the pressing shaft two to move, thereby pushing the retainer from the transfer mechanism into the receiving hole and causing the retainer to abut against the auxiliary rotary bearing, the drive component is used to drive the pressing shaft two to rotate, thereby driving the retainer abutting against the auxiliary rotary bearing to rotate.

[0009] By adopting the above technical solution, the reciprocating drive component 2 can drive the pressing shaft 2 to move the retainer on the transfer mechanism into the receiving hole and push the retainer against the auxiliary bearing. At this time, the drive drive component can drive the retainer to rotate.

[0010] Preferably, the injection assembly includes a reciprocating drive unit three mounted on a first mounting frame. The first mounting frame has a material feeding channel communicating with a receiving hole. The reciprocating drive unit three is provided with an injection plate extending into the material feeding channel. The first mounting frame has a feed inlet communicating with the material feeding channel. The feed inlet is connected to a vibratory feeder. The vibratory feeder is used to feed the roller needles into the material feeding channel through the feed inlet. The reciprocating drive unit three is used to drive the injection plate to reciprocate, thereby injecting the roller needles in the material feeding channel one by one into the retainer.

[0011] By adopting the above technical solution, the vibratory feeder can transport the needle rollers to the feeding channel. At this time, with the cooperation of the feeding drive assembly to drive the rotation of the retainer, the reciprocating drive component can drive the needle-punching plate to move, thereby driving the needle rollers in the feeding channel one by one into the retainer.

[0012] Preferably, the first mounting bracket is further provided with a mounting block, and the mounting block is provided with at least one pressure needle assembly; the pressure needle assembly includes a pressure needle plate, the mounting block has a mounting groove, one end of the pressure needle plate is slidably disposed in the mounting groove, a return spring is provided between the mounting groove and the pressure needle plate, one end of the return spring is disposed at the end of the pressure needle plate near the mounting block, and the other end of the return spring is disposed at the bottom of the mounting groove; the end of the pressure needle plate away from the mounting block extends into the material feeding channel, and the pressure needle plate is used to press the roller needle closest to the receiving hole in the material feeding channel.

[0013] By adopting the above technical solution, under the action of the return spring, the pressure pin plate will press the roller closest to the receiving hole in the pressing material feeding channel, that is, the roller closest to the cage. The pressing of the roller by the pressure pin plate can prevent the roller from overshooting and accidentally entering the receiving hole when it is pushed by the reciprocating drive in the material feeding channel; the pressure pin plate can make the rollers be driven into the cage one by one in an orderly manner.

[0014] Preferably, the end face of the pressure pin away from the mounting block is the pressing end face, which is a concave arc surface and the projection of the pressing end face onto the axial direction of the receiving hole is an arc.

[0015] By adopting the above technical solution, the arc-shaped pressing end face can ensure that the roller needle is difficult to move without the action of other external forces after being pressed on the outer wall of the roller needle.

[0016] Preferably, the transfer mechanism includes a rotating platform on a workbench, a rotating disk on the rotating platform, and a plurality of fixing members on the rotating disk along its circumference. Each fixing member has a through-hole for accommodating bearing components. Each fixing member is also provided with at least one clamping assembly for clamping the bearing components.

[0017] By adopting the above technical solution, the bearing components can enter the material receiving hole, and at this time the clamping assembly can clamp the bearing components to prevent them from falling off.

[0018] Preferably, the clamping assembly includes a clamp, and an installation hole is formed on the inner wall of the material receiving hole. The clamp is slidably disposed on the inner wall of the installation hole. A pressing spring is provided between the clamp and the bottom wall of the installation hole. One end of the pressing spring is connected to the clamp, and the other end is connected to the bottom wall of the installation hole. The end of the clamp near the material receiving hole is an abutting end, and the thickness of the abutting end in the axial direction of the material receiving hole gradually decreases towards the material receiving hole.

[0019] By adopting the above technical solution, the bearing component can be placed into the material receiving hole from either side. During the process of the bearing component moving into the material receiving hole, it will first come into contact with the abutting end, causing the abutting end to move away from the material receiving hole. At this time, the pressing spring is compressed. After the bearing component is fully inserted into the material receiving hole, the abutting end will press against the bearing component under the action of the pressing spring, making it difficult for the bearing component to fall off without other external forces.

[0020] Preferably, the feeding and detection mechanism includes a vibrating disc mounted on a workbench, and a mounting component on the workbench. The mounting component has a material channel at its upper end, and the vibrating disc is connected to the material channel. The material channel has a first position, and the vibrating disc is used to feed a retainer to the first position. The material channel also has a second, third, and fourth position. The workbench has a first pusher and a second pusher. The first pusher is used to push the retainer from the first position to the second position, and the second pusher is used to push the retainer from the second position to the third position. The mounting component has a detection component for detecting whether the retainer at the third position is qualified. The workbench also has a rejection component for rejecting unqualified retainers. The second pusher is also used to push qualified retainers from the third position to the fourth position. The mounting component also has a top-loading component below the fourth position, which is used to push the retainer at the fourth position onto the transfer mechanism.

[0021] By adopting the above technical solution, the oscillating plate can convey the cage into the material channel and reach the first position. Then, the first pusher can push the cage from the first position to the second position, and the second pusher can push the cage from the second position to the third position. The cage reaching the third position will be detected by the detection component to determine whether the cage is qualified. If the cage is unqualified, the rejection component will reject the unqualified cage. Then, the second pusher can also push the cage from the third position to the fourth position, and then the top material component can push the cage located in the fourth position onto the transfer mechanism.

[0022] Preferably, the inner wall of the material channel has a receiving groove, the inner wall of the receiving groove is provided with a compression spring, a pressure block is connected to the compression spring, the pressure block and the receiving groove are slidably connected, and the pressure block is used to press the retainer in the material channel; the upper end of the mounting component is also provided with a pressure plate for confining the retainer in the material channel.

[0023] By adopting the above technical solution, the pressure block will press the retainer in the material channel under the action of the compression spring to prevent the retainer from being over-rushed and tilted or even flying out when it flows in the material channel. The pressure plate is used to limit the retainer flowing in the material channel in the vertical direction.

[0024] In summary, the present invention has at least one of the following beneficial technical effects: 1. The following actions can be performed sequentially: loading and inspecting the cage, installing several needle rollers on the cage to form a semi-finished product, loading the outer ring and installing the semi-finished product on the outer ring to form a finished product, unloading the finished product and inspecting it; the above actions are automated by a PLC controller, and this application improves the efficiency of needle roller bearing assembly. 2. Under the action of the return spring, the pressure plate will press the needle roller closest to the receiving hole in the material feeding channel, which is also the needle roller closest to the cage. The pressure plate can prevent the needle roller from overshooting and accidentally entering the receiving hole when it is pushed by the reciprocating drive in the material feeding channel; the pressure plate can make the needle rollers be driven into the cage one by one in an orderly manner. 3. It can insert bearing components into the receiving hole from either side. During the process of the bearing components moving into the receiving hole, they will first come into contact with the abutting end, causing the abutting end to move away from the receiving hole. At this time, the pressing spring is compressed. After the bearing components are fully inserted into the receiving hole, the abutting end will press against the bearing components under the action of the pressing spring, making it difficult for the bearing components to fall off without other external forces. Attached Figure Description

[0025] Figure 1 This is a top view of the fully automatic assembly machine for needle roller bearings in an embodiment of this application; Figure 2 It is a top view used to illustrate the circulation mechanism; Figure 3 This is the main view used to illustrate the circulation mechanism; Figure 4 It is a partial sectional view used to illustrate the clamping components; Figure 5 This is a schematic diagram illustrating the structure of the fixture; Figure 6 This is a top view used to illustrate the material loading and inspection mechanism; Figure 7 yes Figure 6 The right view; Figure 8 This is a sectional view used to illustrate the first feeding assembly mechanism; Figure 9 This is a schematic diagram illustrating the pressure needle assembly; Figure 10 This is a top view used to illustrate the second feeding assembly mechanism; Figure 11 It is a cross-sectional view used to illustrate the limiting component.

[0026] The attached diagram shows the following markings: 1. Workbench; 2. Transfer mechanism; 21. Rotary platform; 22. Rotary disk; 23. Fixture; 231. Material receiving hole; 2311. Mounting hole; 24. Clamping assembly; 241. Fixture; 2411. First inclined surface; 2412. Abutting surface; 2413. Second inclined surface; 242. Pressing spring; 3. Feeding detection mechanism; 31. Vibrating disk; 32. Mounting component; 33. Material channel; 331. First position; 332. Second position; 333. Third position; 334. Fourth position. 34. First pusher component; 35. Second pusher component; 36. Detection assembly; 361. Detection cylinder; 362. Detection shaft; 37. Rejector component; 38. Ejector component; 4. First feeding assembly mechanism; 41. First mounting bracket; 411. Receiving hole; 42. Feeding drive assembly; 421. Second mounting bracket; 422. Reciprocating drive component one; 423. Pressing shaft one; 424. Auxiliary rotary bearing; 425. Reciprocating drive component two; 426. Third mounting bracket; 427. Drive component; 428. Pressing shaft two; 43. Injection pin Components; 431. Reciprocating drive component three; 432. Material feeding channel; 433. Needle plate; 434. Feed inlet; 44. Vibratory feeder; 45. Mounting block; 451. Mounting groove; 46. Needle pressing assembly; 461. Needle pressing plate; 4611. Pressing end face; 462. Return spring; 5. Second feeding assembly mechanism; 51. Feeding assembly; 511. Mounting base; 512. Material flow channel; 5121. Position one; 5122. Position two; 5123. Position three; 5124. Assembly position; 5125. Inspection position 5126. Rejection position; 513. Feeding tray; 514. Push cylinder one; 515. Push cylinder two; 52. Assembly assembly; 521. Frame; 522. Assembly cylinder; 523. Assembly shaft; 6. Unloading detection mechanism; 61. Unloading cylinder; 62. Discharge port; 63. Connecting frame; 64. Detection camera; 65. Rejection port; 66. Rejection cylinder; 7. Laser displacement sensor; 8. Limiting assembly; 81. Pressure block; 82. Receiving groove; 83. Compression spring; 84. Pressure plate; 9. Limiting assembly. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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 limiting this invention.

[0029] This application discloses a fully automatic assembly machine for needle roller bearings, used to improve the assembly efficiency of needle roller bearings.

[0030] Reference Figure 1 The fully automatic needle roller bearing assembly machine includes a worktable 1, on which a transfer mechanism 2 is provided. Clockwise around the transfer mechanism 2 on the worktable 1 are arranged a feeding and inspection mechanism 3 for feeding and inspecting the cage, a first feeding and assembly mechanism 4 for feeding the needle rollers and installing them onto the cage to obtain a semi-finished product, and a second feeding and assembly mechanism 5 for feeding the outer ring and installing the semi-finished product onto the outer ring to obtain a finished product. The worktable 1 also includes a discharging and inspection mechanism 6 for unloading and inspecting the finished product. The transfer mechanism 2 allows the bearing components to circulate between the feeding and inspection mechanism 3, the first feeding and assembly mechanism 4, and the second feeding and assembly mechanism 5. In this embodiment, the bearing components refer to the cage, the semi-finished product, and the finished product. The fully automatic needle roller bearing assembly machine also includes a PLC program controller. The feeding and inspection mechanism 3, the first feeding and assembly mechanism 4, the second feeding and assembly mechanism 5, the discharging and inspection mechanism 6, and the transfer mechanism 2 are all electrically connected to the PLC program controller.

[0031] With the cooperation of the transfer mechanism 2, this application can achieve the following actions: the feeding and inspection mechanism 3 feeds the retainer and inspects the retainer; the first feeding and assembly mechanism 4 feeds the needle roller and drives the needle roller into the retainer to obtain a semi-finished product; the second feeding and assembly mechanism 5 feeds the outer ring and installs the semi-finished product in the outer ring to obtain a finished product; and the unloading and inspection mechanism 6 inspects the finished product and then unloads it.

[0032] Reference Figure 2 and Figure 3 The transfer mechanism 2 includes a rotating platform 21 mounted on the worktable 1. The specific structure of the rotating platform 21 is existing technology and will not be described in detail here. The rotating platform 21 is equipped with a rotating disk 22, which can drive the rotating disk 22 to rotate at equal angles. The rotating disk 22 is equipped with multiple fixing members 23 along its own circumference. Each fixing member 23 has a material receiving hole 231 that runs vertically through it. The material receiving hole 231 is used to receive bearing parts. Each fixing member 23 is also equipped with at least one clamping assembly 24 for clamping the bearing parts.

[0033] Reference Figure 2 and Figure 4 Specifically, in this embodiment, there are two clamping components 24 arranged symmetrically. Taking the structure of the left clamping component 24 as an example: the clamping component 24 includes a clamp 241 and an installation hole 2311 opened on the inner wall of the material receiving hole 231. The clamp 241 is slidably disposed on the inner wall of the installation hole 2311. A pressing spring 242 is provided between the clamp 241 and the bottom wall of the installation hole 2311. One end of the pressing spring 242 is connected to the clamp 241, and the other end of the pressing spring 242 is connected to the bottom wall of the installation hole 2311. The right end of the clamp 241 is located inside the material receiving hole 231.

[0034] Reference Figure 4 and Figure 5 , Figure 5 This is a projection of the clamp 241 onto the plumb surface. The clamp 241 includes a first inclined surface 2411, an abutting surface 2412, and a second inclined surface 2413 near the end of the receiving hole 231. The first inclined surface 2411, the abutting surface 2412, and the second inclined surface 2413 are distributed sequentially from top to bottom. The first inclined surface 2411 slopes downward from left to right, and the second inclined surface 2413 slopes upward from left to right. The first inclined surface 2411 is used to guide the bearing components to be inserted between the two clamps 241 from above the fixing member 23, and the second inclined surface 2413 is used to guide the bearing components to be inserted between the two clamps 241 from below the fixing member 23.

[0035] The bearing component can be pushed into the receiving hole 231 from above or below the fixing member 23. The bearing component will abut against the first inclined surface 2411 or the second inclined surface 2413, causing the clamp 241 to move away from the receiving hole 231. The pressing spring 242 will be compressed, and then the bearing component can reach between the two clamps 241. Under the action of the two pressing springs 242, the bearing component will be clamped and will not fall off.

[0036] Reference Figure 6 The feeding and testing mechanism 3 includes a oscillating disc 31, combined with... Figure 1 The oscillating plate 31 is disposed on the worktable 1. The worktable 1 is also provided with a mounting component 32. The upper end of the mounting component 32 has a material channel 33. The oscillating plate 31 is connected to the material channel 33. The material channel 33 has a first position 331. The oscillating plate 31 is used to convey the retainer to the first position 331. The material channel 33 also has a second position 332, a third position 333 and a fourth position 334. The worktable 1 is provided with a first pusher 34 and a second pusher 35. Both the first pusher 34 and the second pusher 35 are preferably cylinders. The first pusher 34 is used to push the retainer from the first position 331 to the second position 332. The second pusher 35 is used to push the retainer from the second position 332 to the third position 333.

[0037] Reference Figure 6 and Figure 7 The mounting component 32 is equipped with a detection component 36, which is used to detect whether the retainer located at the third position 333 is qualified. The worktable 1 is also equipped with a rejection component 37, preferably a cylinder, which is used to reject the retainer that fails the test at the third position 333. The second pusher 35 is also used to push the qualified retainer from the third position 333 to the fourth position 334. The mounting component 32 is also equipped with a top feeder 38 located below the fourth position 334. The output end of the top feeder 38 extends into the material channel 33. The top feeder 38 is preferably a cylinder. Figure 2The top feeder 38 is used to push the retainer located in the fourth position 334 into the receiving hole 231.

[0038] Reference Figure 7 Specifically, the detection component 36 includes a detection cylinder 361 mounted on the mounting component 32. The detection cylinder 361 is equipped with a detection shaft 362 and a sensor. When the inner diameter of the cage conforms to the specifications, the detection cylinder 361 can drive the detection shaft 362 into the cage. However, when the inner diameter of the cage does not conform to the specifications, such as when the inner diameter is elliptical, the detection cylinder 361 cannot drive the detection shaft 362 into the cage. The sensor can determine whether the inner diameter of the cage conforms to the requirements based on the movement of the detection shaft 362. The specific detection logic is existing technology and will not be described in detail here. In other embodiments, an inner diameter measuring sensor can also be directly mounted on the detection shaft 362 to measure the inner diameter of the cage.

[0039] The oscillating disc 31 feeds the cage to the first position 331. The first pusher 34 pushes the cage at the first position 331 to the second position 332. The second pusher 35 pushes the cage at the second position 332 to the third position 333. The detection cylinder 361 drives the detection shaft 362 to move and detect the cage. If the detection is qualified, the second pusher 35 works again to push the cage at the third position 333 to the fourth position 334. If the detection is unqualified, the rejection part 37 removes the cage at the third position 333. Finally, the ejector 38 ejects the cage at the fourth position 334 into the receiving hole 231.

[0040] Reference Figure 8 The first feeding assembly mechanism 4 includes a first mounting frame 41 mounted on the workbench 1. The first mounting frame 41 has a through-hole 411. The first mounting frame 41 is equipped with a feeding drive assembly 42, which is used to feed the retainer into the through-hole 411 and drive the retainer to rotate. The first mounting frame 41 is also equipped with an injection assembly 43, which, in conjunction with... Figure 1 The workbench 1 is equipped with a vibratory feeder 44, which is connected to the injection assembly 43. The vibratory feeder 44 is used to feed the needle rollers to the injection assembly 43, and the injection assembly 43 is used to drive the needle rollers into the rotating cage to obtain a semi-finished product.

[0041] Reference Figure 8Specifically, the feeding drive assembly 42 includes a second mounting bracket 421 mounted on the first mounting bracket 41. The second mounting bracket 421 is provided with a reciprocating drive component 422, which is preferably a cylinder. The reciprocating drive component 422 is provided with a pressing shaft 423, which is located above the receiving hole 411. The pressing shaft 423 is provided with an auxiliary rotary bearing 424. The first mounting bracket 41 is also provided with a second reciprocating drive component 425, which is preferably a cylinder. The second reciprocating drive component 425 is provided with a third mounting bracket 426. The third mounting bracket 426 is provided with a drive component 427, which is preferably a stepper motor. The drive component 427 is provided with a second pressing shaft 428, which is located below the receiving hole 411.

[0042] When the material receiving hole 231 is rotated between the receiving hole 411 and the second pressing shaft 428, the second reciprocating drive member 425 can drive the second pressing shaft 428 to move upward, thereby pushing the retainer from the material receiving hole 231 into the receiving hole 411 and causing the upper end of the retainer to abut against the auxiliary rotating bearing 424. At this time, the drive member 427 can drive the second pressing shaft 428 to rotate, thereby driving the retainer abutting against the auxiliary rotating bearing 424 to rotate at an equal angle.

[0043] Reference Figure 8 In this embodiment, there are three injection assemblies 43. The three injection assemblies 43 have the same structure and are evenly arranged along the circumferential direction of the receiving hole 411. The three injection assemblies 43 can speed up the needle loading efficiency of the holder.

[0044] Reference Figure 8 and Figure 9 Taking the leftmost injection assembly 43 as an example: the injection assembly 43 includes a reciprocating drive component 431 mounted on the first mounting bracket 41, preferably a cylinder. The first mounting bracket 41 has a material feeding channel 432 communicating with the receiving hole 411. The reciprocating drive component 431 is equipped with an injection plate 433, which extends into the material feeding channel 432. The first mounting bracket 41 has an inlet 434 communicating with the material feeding channel 432. Figure 1 The feed inlet 434 is connected to the vibratory feeder 44, which feeds the needle rollers through the feed inlet 434 into the feed channel 432. The reciprocating drive component 431 drives the needle-feeding plate 433 to reciprocate, thereby feeding the needle rollers in the feed channel 432 one by one into the retainer. Figure 1 In order to ensure that the needle rollers can be driven into the cage, the worktable 1 is also equipped with a laser displacement sensor 7. The laser displacement sensor 7 can illuminate the window beam of the cage to determine the position of the cage window. When the cage window is not fully aligned with the feed channel 432, the drive component 427 will drive the cage to rotate in advance to adjust the position of the cage before the needle rollers are driven in.

[0045] When the cage rotates at equal angular intervals, the reciprocating drive component 431 drives the needle-punching plate 433 to reciprocate and move to drive the needle rollers in the feed channel 432 into the cage one by one to obtain a semi-finished product.

[0046] Reference Figure 8 and Figure 9 The reciprocating drive unit 431, when operating, moves the needle plate 433, which may push the needles over-aligned. This over-alignment, where the needles are partially inside the receiving hole 411 before the retainer reaches it, makes it difficult for the retainer to enter the receiving hole 411, leading to malfunction. To prevent over-alignment, the first mounting bracket 41 is equipped with a mounting block 45, which has at least one needle pressing assembly 46 (two in this embodiment). One needle pressing assembly 46 presses the second needle from left to right in the feed channel 432, and the other presses the first needle from right to left in the feed channel 432, which is the needle closest to the receiving hole 411. The needle pressing assemblies 46 press the needles in the feed channel 432 to prevent over-alignment.

[0047] Reference Figure 8 and Figure 9 Specifically, the pressure needle assembly 46 includes a pressure needle plate 461, and a mounting groove 451 is opened on the mounting block 45. One end of the pressure needle plate 461 is slidably disposed in the mounting groove 451. A return spring 462 is provided between the mounting groove 451 and the pressure needle plate 461. One end of the return spring 462 is disposed at the end of the pressure needle plate 461 near the mounting block 45, and the other end of the return spring 462 is disposed at the bottom of the mounting groove 451. The end of the pressure needle plate 461 away from the mounting block 45 extends into the material feeding channel 432.

[0048] Reference Figure 9 The end face of the pressure pin 461 away from the mounting block 45 is the pressing end face 4611. The pressing end face 4611 is a concave arc surface and the projection of the pressing end face 4611 on the horizontal plane is an arc.

[0049] Reference Figure 10 The second feeding assembly mechanism 5 includes a feeding component 51 mounted on the workbench 1, combined with... Figure 2 and Figure 3 The second feeding assembly mechanism 5 also includes a fitting assembly 52 disposed on the rotary disk 22. The feeding assembly 51 is used to feed the outer ring, and the fitting assembly 52 is used to push the semi-finished product in the receiving hole 231 into the outer ring to obtain the finished product.

[0050] Reference Figure 10 and combined Figure 1The feeding assembly 51 includes a mounting base 511 and a feeding tray 513 mounted on the workbench 1. The mounting base 511 has a material flow channel 512 at its upper end. The feeding tray 513 is connected to the material flow channel 512 and is used to convey the outer ring to the material flow channel 512. The workbench 1 is also equipped with a first pushing cylinder 514 and a second pushing cylinder 515. The material flow channel 512 has positions 1 5121, 2 5122, and 3 5123. The feeding tray 513 can convey the outer ring to position 1 5121. The first pushing cylinder 514 is used to convey the outer ring from position 1 5121 to position 2 5122, and the second pushing cylinder 515 is used to convey the outer ring from position 2 5122 to position 3 5123. A fitting position 5124 is also provided between positions 2 5122 and 3 5123 for connection. Figure 2 The assembly 52 is used to press the semi-finished product in the receiving hole 231 into the outer ring located at the assembly position 5124 to form the finished product.

[0051] Reference Figure 2 and Figure 3 The assembly 52 includes a frame 521 mounted on a rotating disk 22, a assembly cylinder 522 mounted on the frame 521, and a assembly shaft 523 mounted on the assembly cylinder 522. The assembly cylinder 522 can drive the assembly shaft 523 to move up and down.

[0052] When the receiving hole 411 reaches between the retainer and the sleeve shaft 523 located at the sleeve position 5124, the sleeve cylinder 522 works to drive the sleeve shaft 523 to move down and press the semi-finished product in the receiving hole 411 into the outer ring to obtain the finished product.

[0053] Reference Figure 10 The material feeding and inspection mechanism 6 includes a material feeding cylinder 61 mounted on the workbench 1. The material feeding cylinder 61 is located on one side of the third position 333. The material flow channel 512 has a discharge port 62. The material feeding cylinder 61 is used to push the finished product from the third position 333 to the discharge port 62 for discharge. There are an inspection position 5125 and a rejection position 5126 between the discharge port 62 and the third position 333. A connecting frame 63 is provided on one side of the inspection position 5125 on the workbench 1. An inspection camera 64 is mounted on the connecting frame 63. A rejection port 65 is opened on the mounting base 511 on one side of the rejection position 5126. A rejection cylinder 66 is provided on the workbench 1 on the side of the rejection position 5126 away from the rejection port 65.

[0054] After the finished product reaches the inspection position 5125, the inspection camera 64 inspects the finished product to determine whether the finished product has missing needles. If there are missing needles, when the finished product reaches the rejection position 5126, the rejection cylinder 66 works to reject the finished product through the rejection port 65; if there are no missing needles, the rejection cylinder 66 does not work.

[0055] Reference Figure 11 and combined Figure 6and Figure 10 The bearing components located in the material channel 33 and the material flow channel 512 may be lifted or even fly out due to overshoot during rotation. In order to prevent the above phenomenon from occurring, the material channel 33 is provided with a limiting component 8 and the material flow channel 512 is provided with a limiting component 9. The limiting component 8 and the limiting component 9 have the same structure.

[0056] Reference Figure 6 and Figure 11 Taking the structure of the limiting component 8 as an example: the limiting component 8 includes a pressure block 81, a receiving groove 82 is opened in the material channel 33, a compression spring 83 is provided on the inner wall of the receiving groove 82, the pressure block 81 is connected to the compression spring 83, the pressure block 81 and the receiving groove 82 are slidably connected, the end of the pressure block 81 away from the compression spring 83 is located in the material channel 33, the pressure block 81 is used to press the retainer in the material channel 33; the upper end of the mounting component 32 is also provided with a pressure plate 84 for limiting the retainer in the material channel 33.

[0057] In this application, all power-actuated components are electrically connected to the PLC programmable controller.

[0058] The implementation principle of the fully automatic needle roller bearing assembly machine in this application embodiment is as follows: The oscillating disc 31 feeds the cage to the first position 331. The first pusher 34 pushes the cage at the first position 331 to the second position 332. The second pusher 35 pushes the cage at the second position 332 to the third position 333. The detection cylinder 361 drives the detection shaft 362 to move and detect the cage. If the detection is qualified, the second pusher 35 works again to push the cage at the third position 333 to the fourth position 334. If the detection is unqualified, the rejection part 37 works to reject the cage at the third position 333. Then the ejector part 38 works to push the cage at the fourth position 334 into the receiving hole 231 and clamp it with two clamps 241. The operation of the rotating platform 21 drives the rotating disk 22 to rotate, thereby driving the retainer located in the material receiving hole 231 to rotate between the receiving hole 411 and the pressing shaft 428. The reciprocating drive component 425 drives the pressing shaft 428 to move upward, thereby pushing the retainer from the material receiving hole 231 to the receiving hole 411 and causing the upper end of the retainer to abut against the auxiliary swivel bearing 424. At this time, the drive component 427 drives the pressing shaft 428 to rotate, thereby causing the retainer abutting against the auxiliary swivel bearing 424 to rotate at an equal angle. While the retainer is rotating, the vibrating plate 44 feeds the needle rollers into the material feeding channel 432. The reciprocating drive component 431 drives the needle-punching plate 433 to move back and forth to punch the needle rollers in the material feeding channel 432 into the retainer one by one, thereby obtaining a semi-finished product. After the retainer is needled to obtain a semi-finished product, the reciprocating drive 422 drives the pressing shaft 423 to move down, and at the same time the reciprocating drive 425 drives the pressing shaft 428 to move down. The semi-finished product is moved down and gets out of the receiving hole 411 and re-enters the material receiving hole 231 and is held by the two clamps 241. The operation of the rotating platform 21 drives the rotating disk 22 to rotate, thereby driving the semi-finished product located in the material receiving hole 231 to rotate to the position 5124 above the sleeve position. At this time, the semi-finished product is between the sleeve position 5124 and the sleeve shaft 523. The feeding tray 513 conveys the outer ring into the material flow channel 512. The outer ring will reach the first position 331. The first cylinder 514 is pushed to move the outer ring from the first position 5121 to the second position 5122. The second cylinder 515 is pushed to move the outer ring from the second position 5122 to the fitting position 5124. The fitting cylinder 522 works to drive the fitting shaft 523 to move down and press the semi-finished product in the receiving hole 411 into the outer ring to obtain the finished product. The second cylinder 515 continues to work to move the finished product located at the fitting position 5124 to the third position 5123. The feeding cylinder 61 moves the finished product from position 3 5123 to the discharge port 62. The finished product will pass through the inspection position 5125 and the rejection position 5126 along the way. When the finished product reaches the inspection position 5125, the detection camera 64 detects the finished product to determine whether the finished product has a missing needle. If there is a missing needle, when the finished product reaches the rejection position 5126, the rejection cylinder 66 works to remove the finished product through the rejection port 65. If there is no missing needle, the rejection cylinder 66 does not work, and the finished product reaches the discharge port 62 and is discharged.

[0059] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A fully automatic assembly machine for needle roller bearings, characterized in that: The machine includes a workbench (1), on which are sequentially provided a feeding and inspection mechanism (3) for feeding and inspecting the cage, a first feeding and assembly mechanism (4) for feeding the needle rollers and installing them into the cage to obtain a semi-finished product, and a second feeding and assembly mechanism (5) for feeding the outer ring and installing the semi-finished product into the outer ring to obtain a finished product; the workbench (1) is also provided with a transfer mechanism (2) and a discharge and inspection mechanism (6) for discharging and inspecting the finished product, wherein the transfer mechanism (2) is used to allow the bearing components to circulate between the feeding and inspection mechanism (3), the first feeding and assembly mechanism (4), and the second feeding and assembly mechanism (5); the fully automatic needle roller bearing assembly machine also includes a PLC controller, wherein the feeding and inspection mechanism (3), the first feeding and assembly mechanism (4), the second feeding and assembly mechanism (5), the discharge and inspection mechanism (6), and the transfer mechanism (2) are all electrically connected to the PLC controller; The first loading assembly mechanism (4) includes a first mounting frame (41) on the workbench (1), the first mounting frame (41) having a through receiving hole (411), the first mounting frame (41) having a loading drive assembly (42), the loading drive assembly (42) being used to load the retainer into the receiving hole (411) and drive the retainer to rotate; the first mounting frame (41) also has a needle-punching assembly (43), the workbench (1) having a vibratory feeder (44), the vibratory feeder (44) being connected to the needle-punching assembly (43), the vibratory feeder (44) being used to feed the needle rollers to the needle-punching assembly (43), the needle-punching assembly (43) being used to punch the needle rollers into the rotating retainer to obtain a semi-finished product; The injection assembly (43) includes a reciprocating drive component three (431) mounted on a first mounting frame (41). The first mounting frame (41) has a material feeding channel (432) communicating with a receiving hole (411). The reciprocating drive component three (431) is provided with an injection plate (433) extending into the material feeding channel (432). The first mounting frame (41) has a feed inlet (434) communicating with the material feeding channel (432). The feed inlet (434) is connected to a vibratory feeder (44). The vibratory feeder (44) is used to feed the roller needles through the feed inlet (434) into the material feeding channel (432). The reciprocating drive component three (431) is used to drive the injection plate (433) to reciprocate, thereby injecting the roller needles in the material feeding channel (432) one by one into the retainer. (41) is also provided with a mounting block (45), and the mounting block (45) is provided with at least one pressure needle assembly (46); the pressure needle assembly (46) includes a pressure needle piece (461), the mounting block (45) has a mounting groove (451), one end of the pressure needle piece (461) is slidably disposed in the mounting groove (451), a return spring (462) is provided between the mounting groove (451) and the pressure needle piece (461), one end of the return spring (462) is disposed at the end of the pressure needle piece (461) near the mounting block (45), and the other end of the return spring (462) is disposed at the bottom of the mounting groove (451); the end of the pressure needle piece (461) away from the mounting block (45) extends into the material feeding channel (432), and the pressure needle piece (461) is used to press the roller needle closest to the receiving hole (411) in the material feeding channel (432).

2. The fully automatic assembly machine for needle roller bearings according to claim 1, characterized in that: The feeding drive assembly (42) includes a second mounting bracket (421) mounted on a first mounting bracket (41). The second mounting bracket (421) is provided with a reciprocating drive component (422), and the reciprocating drive component (422) is provided with a pressing shaft (423). The pressing shaft (423) is provided with an auxiliary rotary bearing (424). The first mounting bracket (41) is also provided with a second reciprocating drive component (425), and the second reciprocating drive component (425) is provided with a third mounting bracket (426). The third mounting bracket (426) is provided with a drive component. (427) The drive member (427) is provided with a second pressing shaft (428); the first pressing shaft (423) and the second pressing shaft (428) are located on both sides of the receiving hole (411). The second reciprocating drive member (425) is used to drive the second pressing shaft (428) to move, thereby pushing the retainer from the transfer mechanism (2) into the receiving hole (411) and making the retainer abut against the auxiliary rotating bearing (424). The drive member (427) is used to drive the second pressing shaft (428) to rotate, thereby driving the retainer abutting against the auxiliary rotating bearing (424) to rotate.

3. The fully automatic assembly machine for needle roller bearings according to claim 1, characterized in that: The end face of the pressure pin (461) away from the mounting block (45) is the pressing end face (4611), which is a concave arc surface and the projection of the pressing end face (4611) on the axial direction of the receiving hole (411) is an arc.

4. The fully automatic assembly machine for needle roller bearings according to claim 1, characterized in that: The transfer mechanism (2) includes a rotating platform (21) on the workbench (1), a rotating disk (22) on the rotating platform (21), and a plurality of fixing members (23) on the rotating disk (22) along its circumference. Each fixing member (23) has a through material receiving hole (231) for receiving bearing parts. Each fixing member (23) is also provided with at least one clamping assembly (24) for clamping the bearing parts.

5. The fully automatic assembly machine for needle roller bearings according to claim 4, characterized in that: The clamping assembly (24) includes a clamp (241), and a mounting hole (2311) is formed on the inner wall of the material receiving hole (231). The clamp (241) is slidably disposed on the inner wall of the mounting hole (2311). A pressing spring (242) is provided between the clamp (241) and the bottom wall of the mounting hole (2311). One end of the pressing spring (242) is connected to the clamp (241), and the other end is connected to the bottom wall of the mounting hole (2311). The clamp (241) includes a first inclined surface (2411), abutting surface (2412), and a second inclined surface (2413) near the end of the receiving hole (231). The first inclined surface (2411), abutting surface (2412), and second inclined surface (2413) are distributed sequentially along the axial direction of the receiving hole (231). The first inclined surface (2411) and the second inclined surface (2413) are both used to guide the bearing components into the receiving hole (231).

6. The fully automatic assembly machine for needle roller bearings according to claim 1, characterized in that: The feeding and detection mechanism (3) includes a vibrating plate (31) mounted on a workbench (1). The workbench (1) also has a mounting component (32) with a material channel (33) at its upper end. The vibrating plate (31) is connected to the material channel (33). The material channel (33) has a first position (331), and the vibrating plate (31) is used to feed a retainer to the first position (331). The material channel (33) also has a second position (332), a third position (333), and a fourth position (334). The workbench (1) has a first pusher (34) and a second pusher (35). The first pusher (34) is used to push the retainer from the first position (331) to the second position (332). The second pusher (35) is used to push the retainer from the second position (332) to the third position (333); the mounting component (32) is provided with a detection component (36), which is used to detect whether the retainer located in the third position (333) is qualified; the worktable (1) is also provided with a rejection component (37), which is used to reject unqualified retainers; the second pusher (35) is also used to push qualified retainers from the third position (333) to the fourth position (334); the mounting component (32) is also provided with a top component (38) located below the fourth position (334), which is used to push the retainer located in the fourth position (334) onto the transfer mechanism (2).

7. The fully automatic assembly machine for needle roller bearings according to claim 6, characterized in that: The feed channel (33) is provided with a limiting component (8); the limiting component (8) includes a pressure block (81), the feed channel (33) has a receiving groove (82), the inner wall of the receiving groove (82) is provided with a compression spring (83), the pressure block (81) is connected to the compression spring (83), the pressure block (81) and the receiving groove (82) are slidably connected, the pressure block (81) is used to press the retainer in the feed channel (33); the upper end of the mounting component (32) is also provided with a pressure plate (84) for limiting the retainer in the feed channel (33).

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