Thrust needle bearing swaging machine and swaging method

Abstract

This application discloses a thrust needle roller bearing riveting machine, relating to the technical field of thrust needle roller bearing assembly. The thrust needle roller bearing riveting machine includes a worktable with a conveying mechanism. On one side of the conveying mechanism on the worktable are sequentially arranged a first conveying mechanism for conveying semi-finished products, a second conveying mechanism for conveying shaft rings, a riveting mechanism, and a testing mechanism. The riveting mechanism includes a mounting frame on the worktable, with an electric cylinder mounted on the mounting frame. An upper die is mounted on the output end of the electric cylinder, and a lower die is mounted on the conveying mechanism. The electric cylinder drives the upper die to move, thereby closing with the lower die. This application can improve the assembly efficiency of thrust needle roller bearings.

Description

Technical Field

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

[0002] Thrust needle roller bearings are a type of bearing that typically consists of a control ring, a housing ring, a cage housing the needle rollers, and a shaft ring stacked sequentially. To assemble such a thrust needle roller bearing, the housing ring and the cage housing the needle rollers must first be manually installed into the control ring to obtain a semi-finished product. Then, a riveting machine is used to press the shaft ring into the semi-finished product to obtain the finished product. Finally, the finished product needs to be inspected before it can leave the factory.

[0003] Currently, installing the seat ring and the cage with the needle rollers into the control ring to obtain a semi-finished product, and pressing the shaft ring into the semi-finished product to obtain the finished product, both require a lot of manual operation. This results in low assembly efficiency of thrust needle roller bearings, which is time-consuming and labor-intensive. Summary of the Invention

[0004] To improve the assembly efficiency of thrust needle roller bearings, this application provides a thrust needle roller bearing riveting machine and riveting method.

[0005] Firstly, the aforementioned objective of this invention is achieved through the following technical solution:

[0006] A thrust needle roller bearing riveting machine includes a worktable with a conveying mechanism. On one side of the conveying mechanism, a first conveying mechanism for conveying semi-finished products, a second conveying mechanism for conveying shaft rings, an inspection mechanism for detecting whether the shaft rings are properly positioned within the semi-finished products, a riveting mechanism, and an inspection mechanism are sequentially arranged. The riveting mechanism is used to press the seat ring and the retainer with the needle rollers into the control ring to obtain a semi-finished product and to press the shaft rings into the semi-finished product to obtain a finished product.

[0007] The conveying mechanism, the first transport mechanism, the second transport mechanism, the inspection mechanism, the riveting mechanism, and the testing mechanism are all electrically connected to the PLC controller.

[0008] By adopting the above technical solution, the driving riveting mechanism can press the seat ring and the cage with needle rollers into the control ring to obtain a semi-finished product. After the semi-finished product is collected and placed on one side of the first conveying mechanism, the driving first conveying mechanism can transport the semi-finished product to the conveying mechanism, and the driving second conveying mechanism can transport the shaft ring into the semi-finished product. Then, the driving conveying mechanism can sequentially transport the semi-finished product containing the shaft ring to the riveting mechanism and the inspection mechanism. The riveting mechanism can press the shaft ring into the semi-finished product to obtain the finished product, and the inspection mechanism can inspect the finished product to determine whether the finished product is qualified. This application enables the installation of the seat ring and the cage with needle rollers into the control ring to obtain a semi-finished product, the placement of the semi-finished product on the riveting machine, the driving of the riveting machine to press, and the inspection of the finished product to be completed automatically, thereby improving the assembly efficiency of the thrust needle roller bearing.

[0009] Preferably, the riveting mechanism includes a mounting frame on a workbench, an electric cylinder on the mounting frame, an upper die on the output end of the electric cylinder, and a lower die on the conveying mechanism. The electric cylinder is used to drive the upper die to move so as to close with the lower die.

[0010] The lower mold includes a placement disk with a placement post and a through positioning hole.

[0011] By adopting the above technical solution, after the semi-finished product with the shaft ring reaches the lower mold, the drive electric cylinder can drive the upper mold to move and close with the lower mold, thereby pressing the shaft ring into the semi-finished product; the semi-finished product with the shaft ring can be placed on the placement column, and then the drive electric cylinder can drive the upper mold to move to abut against the placement column to obtain the finished product. The above actions can prevent the upper mold from moving too far and damaging the semi-finished product.

[0012] Preferably, the first conveying mechanism includes a first fixed frame disposed on the workbench, the first fixed frame is provided with a transverse reciprocating drive component, the output end of the transverse reciprocating drive component is provided with a vertical reciprocating drive component, and the output end of the vertical reciprocating drive component is provided with a gripper drive component.

[0013] By adopting the above technical solution, the horizontal reciprocating drive can drive the gripper drive to move horizontally and reciprocally, and the vertical reciprocating drive can drive the gripper drive to move vertically and reciprocally, thereby enabling the gripper drive to pick up or release the semi-finished product; the above structure can complete the automated feeding of semi-finished products.

[0014] Preferably, the second conveying mechanism includes a feeding component and a conveying component. The feeding component is disposed on the worktable and is used to store and deliver multiple shaft rings. The conveying component is disposed on the worktable and is located between the feeding component and the conveying mechanism.

[0015] By adopting the above technical solution, the feeding component can store and deliver multiple shaft rings, and the drive and conveying component can transport the shaft rings delivered by the feeding component to the conveying mechanism. The above structure can complete the automated feeding of shaft rings.

[0016] Preferably, the feeding assembly includes a second fixed frame mounted on the workbench, a base plate on the second fixed frame, a plurality of limiting rods on the top of the base plate, and a placement area for placing the shaft rings formed between the plurality of limiting rods. The base plate also has a discharge hole for the shaft rings to fall through. The second fixed frame also has a transverse discharge drive, and a feeding plate is provided on the output end of the transverse discharge drive. The top of the feeding plate is attached to the bottom of the base plate, and the feeding plate and the base plate are movably fitted. A feeding groove is opened on the top of the feeding plate. The transverse discharge drive is used to drive the feeding plate to move so as to receive the shaft rings falling through the discharge hole and then send the shaft rings to one side of the conveying assembly.

[0017] By adopting the above technical solution, multiple shaft rings can be placed in the placement area. The lateral discharge drive can drive the feeding plate to move. When the feeding plate moves to the point where the feeding groove is below the discharge hole, the shaft ring will fall from the discharge hole under the action of gravity. Then, the discharge drive can drive the shaft ring to move to the side of the conveying component. Since the top of the feeding plate is attached to the bottom of the base plate, the shaft ring will only fall when the feeding groove is below the discharge hole when the feeding plate moves.

[0018] Preferably, the conveying mechanism includes a placement platform, a longitudinal and transverse conveying assembly, and a clamping conveying assembly. The placement platform is located on a workbench, with one end forming a feeding area and the other end forming a discharging area. The longitudinal and transverse conveying assembly is located on the workbench on one side of the placement platform and is used to convey several semi-finished products containing shaft rings from the feeding area to the discharging area. The clamping conveying assembly is used to load and unload the lower mold.

[0019] By adopting the above technical solution, the longitudinal and transverse conveying components can convey several semi-finished products with shaft rings on the placement table from the feeding area to the discharge area, while the clamping conveying components can clamp the semi-finished products with shaft rings onto the lower mold and clamp the finished products from the lower mold onto the placement table.

[0020] Preferably, the longitudinal and transverse conveying assembly includes a third fixed frame, on which a first transverse reciprocating drive is provided, a fixed plate group is provided at the output end of the first transverse reciprocating drive, a second transverse reciprocating drive is provided at the fixed plate group, and a plurality of conveying claws are provided at the output end of the second transverse reciprocating drive, and the plurality of conveying claws are located on the placement table.

[0021] By adopting the above technical solution, the alternating driving of the first transverse reciprocating drive and the second transverse reciprocating drive can drive several conveying claws to move, thereby conveying the semi-finished products with shaft rings on the conveying mechanism in stages from the self-feeding area to the discharge area.

[0022] Preferably, the placement platform is provided with an abutment bar; the second transverse reciprocating drive is used to drive the conveying claw to move so that the semi-finished product with the shaft ring is abutted against the abutment bar and then the position of the semi-finished product with the shaft ring is adjusted.

[0023] By adopting the above technical solution, the second transverse reciprocating drive can bring together several semi-finished products with shaft rings located on the placement table, thereby adjusting the position of the shaft rings.

[0024] Preferably, an inspection mechanism is provided on one side of the second conveying mechanism on the workbench; the inspection mechanism includes a fourth fixed frame on the workbench, a vertical reciprocating drive component is provided on the fourth fixed frame, and an inspection component is provided on the output end of the vertical reciprocating drive component;

[0025] The fourth fixed frame is also provided with a rejection component, which includes a rejection drive on the fourth fixed frame. A material leakage hole is opened on the placement table. A mating plate is provided on the output end of the rejection drive. The mating plate is fitted into the material leakage hole, and the top of the mating plate is flush with the top of the placement table. A first-stage product collection box is provided on the worktable below the material leakage hole.

[0026] By adopting the above technical solution, the vertical reciprocating drive can move the inspection piece to the side of the semi-finished product with the shaft ring, thereby checking whether the placement of the shaft ring in the semi-finished product is appropriate; if the position is not appropriate, the rejection drive will start to move the mating plate to expose the leakage hole, and then the semi-finished product with the shaft ring that is not in the proper position will fall into the first product collection box.

[0027] A riveting method applied to the aforementioned thrust needle roller bearing riveting machine includes the following steps:

[0028] S1. Place the control ring on the lower mold, place the seat ring inside the control ring, and drive the electric cylinder to press the seat ring.

[0029] S2. Place the retainer with the needle rollers into the control ring, and drive the electric cylinder to press the retainer with the needle rollers to obtain a semi-finished product.

[0030] S3. Unload and collect the semi-finished products, place multiple collected semi-finished products on one side of the first conveying mechanism, and load shaft rings onto the second conveying mechanism.

[0031] S4. Drive the first conveying mechanism, the second conveying mechanism, the inspection mechanism, the riveting mechanism, and the testing mechanism to press the shaft ring into the semi-finished product to obtain the finished product.

[0032] By adopting the above technical solution, the vertical force riveting and the precise stroke control by the electric cylinder ensure that the seat ring and the retainer with the needle rollers are subjected to uniform pressing pressure. This allows the seat ring and the retainer with the needle rollers to be precisely pressed into place within the control ring, thus preventing the control ring from collapsing due to the tilt of the seat ring or improper stroke control when pressing the shaft ring into the semi-finished product.

[0033] In summary, the present invention has at least one of the following beneficial technical effects:

[0034] 1. The driving riveting mechanism can press the seat ring and the cage with needle rollers into the control ring to obtain a semi-finished product. After the semi-finished product is collected and placed on one side of the first conveying mechanism, the driving first conveying mechanism can transport the semi-finished product to the conveying mechanism, and the driving second conveying mechanism can transport the shaft ring into the semi-finished product. Then, the driving conveying mechanism can sequentially transport the semi-finished product with the shaft ring to one side of the riveting mechanism and one side of the inspection mechanism. The riveting mechanism can press the shaft ring into the semi-finished product to obtain the finished product, and the inspection mechanism can inspect the finished product to determine whether the finished product is qualified. This application enables the installation of the seat ring and the cage with needle rollers into the control ring to obtain a semi-finished product, the placement of the semi-finished product on the riveting machine, the driving of the riveting machine to press, and the inspection of the finished product to be completed automatically, thereby improving the assembly efficiency of the thrust needle roller bearing.

[0035] 2. Because the vertical force riveting is used and the stroke is precisely controlled by the electric cylinder, the seat ring and the cage with the needle rollers are subjected to uniform pressing force. This allows the seat ring and the cage with the needle rollers to be precisely pressed into place within the control ring. Consequently, when the shaft ring is pressed into the semi-finished product, the control ring will not collapse due to the tilt of the seat ring or improper stroke control. Attached Figure Description

[0036] Figure 1 This is a top view of the overall structure of the thrust needle roller bearing riveting machine in the embodiments of this application;

[0037] Figure 2 This is a structural diagram used to illustrate the conveying mechanism;

[0038] Figure 3 This is a structural diagram used to illustrate the first conveying mechanism;

[0039] Figure 4 This is a structural diagram illustrating the second conveying mechanism;

[0040] Figure 5 This is a structural diagram illustrating the feeding assembly;

[0041] Figure 6 It is a sectional view used to represent the inspection agency;

[0042] Figure 7 This is a structural diagram used to illustrate the riveting mechanism;

[0043] Figure 8 It is a sectional view used to show the upper and lower molds;

[0044] Figure 9 It is a sectional view used to show the upper and lower dies on the riveting assembly mechanism;

[0045] Figure 10 This is a structural schematic diagram illustrating the clamping and conveying assembly;

[0046] Figure 11 This is a structural diagram used to illustrate the testing organization;

[0047] Figure 12 This is a schematic diagram illustrating the structure of the detection component;

[0048] Figure 13 This is a structural diagram used to illustrate the component for feeding defective products.

[0049] In the attached diagram, the following labels are used: 1. Workbench; 11. Feeding area; 12. Discharge area; 2. Conveying mechanism; 21. Placement platform; 22. Longitudinal and transverse conveying assembly; 221. Third fixed frame; 222. First transverse reciprocating drive; 223. Fixed plate assembly; 224. Second transverse reciprocating drive; 225. Conveying claw; 2251. Groove; 23. Abutment bar; 24. Clamping conveying assembly; 241. Lifting cylinder; 242. Clamping cylinder; 3. First conveying mechanism; 31. First fixed frame; 32. Transverse reciprocating drive; 33. Vertical reciprocating drive; 34. Claw drive; 4. Second conveying mechanism; 41. Feeding assembly; 411. Second fixed frame; 412. Base plate; 4121. Discharge hole; 413. Limiting rod; 4131. Placement area; 42. Handling assembly; 43. Transverse... 44. Feeding plate; 45. Feeding trough; 46. Feeding drive; 5. Inspection mechanism; 51. Fourth fixed frame; 52. Vertical reciprocating drive; 53. Inspection piece; 54. Rejection assembly; 541. Rejection drive; 542. Leakage hole; 543. Mating plate; 544. First-stage product collection box; 6. Riveting mechanism; 61. Mounting frame; 62. Electric cylinder; 63. Upper mold; 631. Mounting ring; 632. Protruding column; 64. Lower mold; 641. Placement disc; 642. Placement column; 643. Positioning hole; 7. Detection mechanism; 71. Detection assembly; 711. Fifth fixed frame; 712. Up and down displacement cylinder; 713. Counterweight shaft; 714. Displacement sensor; 72. Defective product unloading assembly; 73. Second-stage product collection box; 8. Riveting assembly mechanism; 81. Limiting ring. Detailed Implementation

[0050] The present invention will be further described in detail below with reference to the accompanying drawings.

[0051] 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.

[0052] This application discloses a thrust needle roller bearing riveting machine. It is used to improve the assembly efficiency of thrust needle roller bearings. (See also...) Figure 1The thrust needle roller bearing riveting machine includes a worktable 1, on which a conveying mechanism 2 is provided. One end of the conveying mechanism 2 forms a feeding area 11, and the other end forms a discharging area 12. On one side of the worktable 1, from the feeding area 11 to the discharging area 12, a first conveying mechanism 3, a second conveying mechanism 4, an inspection mechanism 5, a riveting mechanism 6, and a testing mechanism 7 are sequentially arranged. The first conveying mechanism 3 is used to convey semi-finished products onto the conveying mechanism 2. The second conveying mechanism 4 is used to convey the shaft ring into the semi-finished product. The inspection mechanism 5 is used to check whether the shaft ring is properly positioned within the semi-finished product. The riveting mechanism 6 is used to press the seat ring and the retainer with the needle rollers into the control ring to obtain the semi-finished product, and to press the shaft ring into the semi-finished product to obtain the finished product. The testing mechanism 7 is used to check whether the finished product is qualified. The conveying mechanism 2, the first conveying mechanism 3, the second conveying mechanism 4, the inspection mechanism 5, the riveting mechanism 6, and the testing mechanism 7 are all electrically connected to a PLC controller to automate the assembly of the thrust needle roller bearing.

[0053] First, the riveting mechanism is driven to press the seat ring and the retainer with the needle rollers into the control ring to obtain a semi-finished product. Then, the semi-finished product is collected and placed on one side of the first conveying mechanism. The first conveying mechanism 3 is driven to convey the semi-finished product to the conveying mechanism 2, and the second conveying mechanism 4 is driven to convey the shaft ring into the semi-finished product. Then, the conveying mechanism 2 is driven to convey the semi-finished product with the shaft ring to the inspection mechanism 5. The inspection mechanism 5 checks whether the placement of the shaft ring in the semi-finished product is appropriate. After that, the conveying mechanism 2 is driven to convey the semi-finished product with the shaft ring to the riveting mechanism 6. The riveting mechanism 6 is driven to press the shaft ring into the semi-finished product to obtain the finished product. After that, the conveying mechanism 2 is driven to convey the finished product to the inspection mechanism 7. The inspection mechanism 7 is driven to inspect the finished product.

[0054] Reference Figure 1 and Figure 2 The conveying mechanism 2 includes a placement platform 21 and a longitudinal and transverse conveying assembly 22. The placement platform 21 is located on the workbench 1, and the feeding area 11 and the discharge area 12 are respectively formed at both ends of the placement platform 21. The longitudinal and transverse conveying assembly 22 is located on the workbench 1 and is located on one side of the placement platform 21. After the first conveying mechanism 3 and the second conveying mechanism 4 assemble and place the semi-finished product with the shaft ring on the placement platform 21, the longitudinal and transverse conveying assembly 22 can convey the semi-finished product with the shaft ring from the feeding area 11 to the discharge area 12 in a rhythmic manner.

[0055] Reference Figure 2 The direction from the feeding area 11 to the discharge area 12 is taken as the x-axis, the horizontal direction perpendicular to the x-axis is taken as the y-axis, and the vertical direction perpendicular to both the x-axis and y-axis is taken as the z-axis.

[0056] Reference Figure 1 and Figure 2The longitudinal and transverse conveying assembly 22 includes a third fixed frame 221 mounted on the worktable 1. The third fixed frame 221 is provided with a first transverse reciprocating drive 222, which is preferably a cylinder. The output end of the first transverse reciprocating drive 222 is provided with a fixed plate group 223. The fixed plate group 223 is provided with a second transverse reciprocating drive 224, which is preferably a cylinder. The output end of the second transverse reciprocating drive 224 is provided with a plurality of conveying claws 225. The first transverse reciprocating drive 222 is used to drive the plurality of conveying claws 225 to reciprocate along the x-axis direction. The second transverse reciprocating drive 224 is used to drive the plurality of conveying claws 225 to reciprocate along the y-axis direction. The plurality of conveying claws 225 are evenly distributed along the x-axis direction, and the plurality of conveying claws 225 are all located on the placement table 21.

[0057] Reference Figure 2 In order to arrange the semi-finished products with shaft rings in an orderly manner on the placement table 21, the top of the placement table 21 is provided with an abutment strip 23 on one side of several conveying claws 225. The conveying claws 225 include clamps with trapezoidal grooves 2251. The longer bottom of the trapezoidal grooves 2251 is close to one end of the abutment strip 23. The second transverse reciprocating drive 224 is used to drive the conveying claws 225 to move towards the abutment strip 23, thereby abutting the semi-finished products with shaft rings against the abutment strip 23 and adjusting the position of the semi-finished products with shaft rings.

[0058] Taking one conveying cycle as an example: after the semi-finished product with the shaft ring is placed on the placement table 21, the second transverse reciprocating drive 224 is first driven so that the conveying claw 225 abuts the semi-finished product with the shaft ring against the abutment bar 23. Then, the first transverse reciprocating drive 222 is driven to move the semi-finished product with the shaft ring along the x-axis. Finally, the second transverse reciprocating drive 224 is driven again so that the conveying claw 225 moves along the y-axis and disengages from the semi-finished product with the shaft ring.

[0059] Reference Figure 3 The first conveying mechanism 3 includes a first fixed frame 31, combined with Figure 1 The first fixed frame 31 is mounted on the workbench 1 and is located on one side of the feeding area 11. The first fixed frame 31 is provided with a transverse reciprocating drive 32, which is preferably a cylinder. The output end of the transverse reciprocating drive 32 is provided with a vertical reciprocating drive 33, which is also preferably a cylinder. The output end of the vertical reciprocating drive 33 is provided with a gripper drive 34, which is preferably a gripper cylinder. The transverse reciprocating drive 32 is used to drive the gripper cylinder to move along the x-axis direction, and the vertical reciprocating drive 33 is used to drive the gripper cylinder to move along the z-axis direction.

[0060] Reference Figure 4The second conveying mechanism 4 includes a feeding component 41 and a conveying component 42. The feeding component 41 is mounted on the workbench 1 and is combined with... Figure 1 The feeding assembly 41 is used to store multiple shaft rings and send them to one side of the conveying assembly 42. The conveying assembly 42 is located on the worktable 1 and between the feeding assembly 41 and the conveying mechanism 2. The conveying assembly 42 is used to transport the shaft rings sent out by the feeding assembly 41 to the placement table 21.

[0061] Reference Figure 4 and Figure 5 Specifically, the feeding assembly 41 includes a second fixed frame 411 mounted on the worktable 1. The second fixed frame 411 has a base plate 412, and the top of the base plate 412 has several limiting rods 413. A placement area 4131 for placing the shaft ring is formed between the limiting rods 413. The base plate 412 also has a discharge hole 4121 for the shaft ring to fall through. The second fixed frame 411 also has a transverse discharge drive 43, which is preferably a cylinder. A feeding plate 44 is provided on the output end of the transverse discharge drive 43. The transverse discharge drive 43 is used to drive the feeding plate 44 to move along the y-axis. The top of the feeding plate 44 is in contact with the bottom of the base plate 412, and the feeding plate 44 and the base plate 412 are in a movable fit. The top of the feeding plate 44 has a feeding groove 45. The transverse discharge drive 43 is used to drive the feeding plate 44 to move so as to receive the shaft ring that leaks from the discharge hole 4121 and then send the shaft ring to one side of the conveying assembly 42.

[0062] Reference Figure 3 and Figure 4 Specifically, the structure of the transport component 42 is the same as that of the first transport mechanism 3, so it will not be described in detail here.

[0063] First, multiple shaft rings need to be stacked and placed in the placement area 4131. Then, the transverse discharge drive 43 is driven to move the feeding plate 44 so that the feeding groove 45 is directly below the discharge hole 4121. At this time, the shaft rings will fall into the feeding groove 45 under the action of gravity. Then, the transverse discharge drive 43 is driven again to move the shaft rings to one side of the conveying assembly 42. Finally, the conveying assembly 42 is driven to transport the shaft rings to the placement table 21.

[0064] Reference Figure 5 To facilitate workers to fill the shaft rings in the placement area 4131, the second fixed frame 411 is provided with a feeding drive 46, which is preferably a ball screw drive assembly. The base plate 412 is located on the output end of the feeding drive 46. Driving the feeding drive 46 can move the base plate 412, thereby moving several limiting rods 413 to a position that is convenient for workers to fill.

[0065] Reference Figure 6 The inspection mechanism 5 includes a fourth fixing frame 51, combined with... Figure 1 The fourth fixed frame 51 is mounted on the workbench 1. A vertical reciprocating drive 52 is mounted on the fourth fixed frame 51. The vertical reciprocating drive 52 is preferably a cylinder. An inspection piece 53 is mounted on the output end of the vertical reciprocating drive 52. The vertical reciprocating drive 52 drives the inspection piece 53 to reciprocate along the z-axis. The inspection piece 53 is preferably a sensor switch. The fourth fixed frame 51 also includes a rejection assembly 54. The rejection assembly 54 includes a rejection drive 541 mounted on the fourth fixed frame 51. The rejection drive 541 is preferably a cylinder. A material leakage hole 542 is opened on the placement table 21. A mating plate 543 is mounted on the output end of the rejection drive 541. The mating plate 543 is fitted into the material leakage hole 542. Figure 1 The top of the mating plate 543 is flush with the top of the placement table 21; a first-stage product collection box 544 is provided on the workbench 1 below the material leakage hole 542.

[0066] When the semi-finished product with the shaft ring reaches above the mating plate 543, the driving vertical reciprocating drive 52 drives the inspection piece 53 to move downward to inspect the semi-finished product with the shaft ring, thereby determining whether the position of the shaft ring in the semi-finished product is appropriate. If it is determined to be inappropriate, the drive 541 is activated to drive the mating plate 543 to move, thereby exposing the leakage hole 542. The semi-finished product with the shaft ring will fall into the first product collection box 544.

[0067] Reference Figure 7 The riveting mechanism 6 includes a mounting bracket 61, which is combined with... Figure 1 A mounting frame 61 is mounted on the workbench 1. An electric cylinder 62 is mounted on the mounting frame 61. An upper mold 63 is mounted on the output end of the electric cylinder 62. A lower mold 64 is mounted on the conveying mechanism 2. The electric cylinder 62 is used to drive the upper mold 63 to move, thereby closing with the lower mold 64. (Refer to...) Figure 8 Specifically, the upper mold 63 includes a downwardly protruding post 632, and an installation ring 631 is attached to the outer side wall of the upper mold 63 by screws; the lower mold 64 includes a placement disc 641, the top of the placement disc 641 has a placement post 642, and a positioning hole 643 is opened in the center of the placement post 642.

[0068] The action of pressing the seat ring and the retainer with the needle rollers into the control ring to obtain the semi-finished product is as follows: First, the control ring is placed on the lower mold 64, the seat ring is placed inside the control ring, and the electric cylinder 62 is driven to move the upper mold 63 down to press the seat ring; then, the retainer with the needle rollers is placed inside the control ring and positioned above the seat ring, and then the electric cylinder 62 is driven to move the upper mold 63 down to press the retainer with the needle rollers to obtain the semi-finished product.

[0069] The action of pressing the shaft ring into the semi-finished product is as follows: after the semi-finished product with the shaft ring reaches the lower mold 64, the drive cylinder 62 can drive the upper mold 63 to move. The upper mold 63 moves until it stops against the placement column 642 to press the shaft ring into the semi-finished product to obtain the finished product. The above action can prevent the upper mold 63 from moving too far and damaging the semi-finished product. Figure 8 The diagram shows the structure after the shaft ring is pressed into the semi-finished product.

[0070] Reference Figure 8 and Figure 9 In order to speed up the efficiency of assembling the seat ring into the control ring, an additional riveting assembly mechanism 8 can be set on the worktable. The difference between the riveting assembly mechanism 8 and the riveting mechanism 6 is that the size of the lower mold 64 is adjusted to facilitate the placement of the control ring, and the mounting ring 631 is removed.

[0071] When in use, the control ring needs to be placed on the placement disc 641, and then the seat ring is placed inside the control ring. After that, the drive cylinder 62 drives the upper mold 63 to move down, so that the protrusion 632 extends into the positioning hole 643 and presses the seat ring into the control ring. Figure 9 The diagram shows the structure after the seat ring is pressed into the control ring.

[0072] Reference Figure 9 In order to ensure that the seat ring is pressed into place within the control ring and that the control ring is positioned, a limiting ring 81 is provided on the outer side of the lower mold 64 of the riveting assembly mechanism 8. During use, the control ring needs to be placed against the limiting ring 81 to ensure that the control ring is positioned.

[0073] Because the vertical force riveting is applied and the stroke is precisely controlled by the electric cylinder 62, the seat ring is subjected to uniform pressing force, which ensures that the seat ring is pressed into place accurately. This prevents the control ring from collapsing due to the tilt of the seat ring or improper stroke control when pressing the shaft ring into the semi-finished product.

[0074] Reference Figure 10 Because the top of the lower mold 64 is higher than the top of the placement table 21, it is impossible to use a lateral conveying method to load and unload the lower mold 64. In order to clamp the semi-finished product with the shaft ring from the placement table 21 onto the lower mold 64 and to clamp the finished product on the lower mold 64 onto the placement table 21, combined with Figure 2 The conveying mechanism 2 also includes a clamping conveying assembly 24, which includes a lifting cylinder 241 mounted on the third fixed frame 221. Two clamping cylinders 242 are mounted on the output end of the lifting cylinder 241. The lifting cylinder 241 is used to drive the two clamping cylinders 242 to move along the z-axis.

[0075] Reference Figure 11The testing organization 7 includes a testing component 71 for testing finished products and a defective product unloading component 72 for unloading unqualified finished products. Both the testing component 71 and the defective product unloading component 72 are located on the workbench 1 on one side of the discharge area 12.

[0076] Reference Figure 11 and Figure 12 The detection component 71 includes a fifth fixed frame 711 mounted on the workbench 1, and the fifth fixed frame 711 is located on one side of the discharge area 12. A vertical displacement cylinder 712 is mounted on the fifth fixed frame 711. A counterweight shaft 713 and a displacement sensor 714 are movably mounted on the output end of the vertical displacement cylinder 712. The detection method here is existing technology and will not be described in detail here; see reference... Figure 6 and Figure 13 The defective product unloading component 72 and the rejection component 54 have the same structure, so they will not be described in detail here. The defective product unloading component 72 is equipped with a secondary product collection box 73, which is used to collect products that fail the inspection and are unloaded.

[0077] The finished product is inspected by driving the up-and-down displacement cylinder 712 to move the counterweight shaft 713 down to abut against the finished product. At this time, the displacement sensor 714 can detect the displacement of the counterweight shaft 713 and calculate the height of the finished product. The finished product is qualified based on its height.

[0078] When the detection component 71 detects that the finished product is defective, when the defective finished product reaches the defective product unloading component 72, the defective product unloading component 72 will cause the defective finished product to fall into the second-grade product collection box 73.

[0079] The implementation principle of the thrust needle roller bearing riveting machine in this application embodiment is as follows:

[0080] First, multiple shaft rings are filled in the placement area 4131. Then, the horizontal reciprocating drive 32, the vertical reciprocating drive 33, and the gripper drive 34 are driven to transport the semi-finished product to the placement table 21. The horizontal discharge drive 43 is driven to move the feeding plate 44 so that the feeding chute 45 moves below the discharge hole 4121 to receive the shaft rings. Then, the horizontal discharge drive 43 is driven again to move the feeding plate 44 so that the shaft rings move to one side of the conveying assembly 42. The conveying assembly 42 is then driven to place the shaft rings into the semi-finished product.

[0081] Then, the second transverse reciprocating drive 224 is activated so that the conveying claw 225 presses the semi-finished product with the shaft ring against the abutment bar 23, and drives the first transverse reciprocating drive 222 to move the semi-finished product with the shaft ring along the direction from the feeding area 11 to the discharge area 12.

[0082] When the semi-finished product containing the shaft ring moves to the side of the fourth fixed frame 51, the vertical reciprocating drive 52 drives the inspection piece 53 to move down to inspect the semi-finished product containing the shaft ring, thereby determining whether the position of the shaft ring in the semi-finished product is appropriate; if it is determined to be inappropriate, the rejection drive 541 is activated to drive the mating plate 543 to move, thereby exposing the material leakage hole 542, and the semi-finished product with the shaft ring will fall into the first product collection box 544; if it is appropriate, the first horizontal reciprocating drive 222 drives the semi-finished product containing the shaft ring to the side of the lower mold 64;

[0083] Then, the lifting cylinder 241 and the two clamping cylinders 242 are driven to clamp the semi-finished product containing the shaft ring onto the lower mold 64. The electric cylinder 62 is started to drive the upper mold 63 to move and close with the lower mold 64, thereby pressing the shaft ring into the semi-finished product to obtain the finished product.

[0084] Finally, the first transverse reciprocating drive 222 is driven to move the finished product to one side of the detection component 71. The detection component 71 detects whether the finished product is qualified. If the finished product is unqualified, the first transverse reciprocating drive 222 is driven to move the finished product above the second product collection box 73. The defective product unloading component 72 is activated to make the unqualified finished product fall into the second product collection box 73. If it is qualified, it is collected by the worker.

[0085] This application also discloses a riveting method applied to the above-mentioned thrust needle roller bearing riveting machine, comprising the following steps:

[0086] S1. Place the control ring on the lower mold 64, place the seat ring inside the control ring, and drive the electric cylinder 62 to move the upper mold 63 down to press the seat ring.

[0087] S2. Place the retainer with the needle rollers into the control ring, and drive the electric cylinder to move the upper mold 63 down to press the retainer with the needle rollers to obtain a semi-finished product.

[0088] S3. Unload and collect the semi-finished products, place multiple collected semi-finished products on one side of the first conveying mechanism 3, and load shaft rings onto the second conveying mechanism 4.

[0089] S4 drives the first conveying mechanism 3, the second conveying mechanism 4, the inspection mechanism 5, the riveting mechanism 6, and the testing mechanism 7 to press the shaft ring into the semi-finished product to obtain the finished product.

[0090] 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 thrust needle roller bearing riveting machine, characterized in that: Includes a workbench (1), on which a conveying mechanism (2) is provided. On one side of the conveying mechanism (2), the workbench (1) is provided with a first conveying mechanism (3) for conveying semi-finished products, a second conveying mechanism (4) for conveying shaft rings, an inspection mechanism (5) for detecting whether the placement position of the shaft ring in the semi-finished product is appropriate, a riveting mechanism (6) and an inspection mechanism (7). The riveting mechanism (6) is used to press the seat ring and the retainer equipped with needle rollers into the control ring to obtain a semi-finished product and to press the shaft ring into the semi-finished product to obtain a finished product. The conveying mechanism (2), the first conveying mechanism (3), the second conveying mechanism (4), the inspection mechanism (5), the riveting mechanism (6), and the testing mechanism (7) are all electrically connected to the PLC controller; The riveting mechanism (6) includes a mounting frame (61) on the workbench (1), an electric cylinder (62) is provided on the mounting frame (61), an upper mold (63) is provided on the output end of the electric cylinder (62), and a lower mold (64) is provided on the conveying mechanism (2). The electric cylinder (62) is used to drive the upper mold (63) to move so as to close with the lower mold (64). The lower mold (64) includes a placement disk (641), the placement disk (641) has a placement post (642), and the placement post (642) has a positioning hole (643). The second conveying mechanism (4) includes a feeding component (41) and a conveying component (42). The feeding component (41) is located on the workbench (1) and is used to store and deliver multiple shaft rings. The conveying component (42) is located on the workbench (1) and between the feeding component (41) and the conveying mechanism (2). The feeding assembly (41) includes a second fixed frame (411) mounted on the workbench (1). The second fixed frame (411) is provided with a base plate (412). The top of the base plate (412) is provided with a plurality of limiting rods (413). A placement area (4131) for placing the shaft ring is formed between the plurality of limiting rods (413). The base plate (412) is also provided with a discharge hole (4121) for the shaft ring to fall through. The second fixed frame (411) is also provided with a transverse discharge drive. The transverse discharge drive (43) has a feeding plate (44) on its output end. The top of the feeding plate (44) is attached to the bottom of the base plate (412), and the feeding plate (44) and the base plate (412) are in a movable fit. The top of the feeding plate (44) has a feeding groove (45). The transverse discharge drive (43) is used to drive the feeding plate (44) to move so as to receive the shaft ring that leaks from the discharge hole (4121) and then send the shaft ring to the side of the conveying assembly (42).

2. The thrust needle roller bearing riveting machine according to claim 1, characterized in that: The first conveying mechanism (3) includes a first fixed frame (31) on the workbench (1), a horizontal reciprocating drive (32) is provided on the first fixed frame (31), a vertical reciprocating drive (33) is provided on the output end of the horizontal reciprocating drive (32), and a gripper drive (34) is provided on the output end of the vertical reciprocating drive (33).

3. The thrust needle roller bearing riveting machine according to claim 1, characterized in that: The conveying mechanism (2) includes a placement platform (21), a longitudinal and transverse conveying assembly (22), and a clamping conveying assembly (24). The placement platform (21) is located on the workbench (1). One end of the placement platform (21) forms a feeding area (11), and the other end forms a discharge area (12). The longitudinal and transverse conveying assembly (22) is located on the workbench (1) on one side of the placement platform (21). The longitudinal and transverse conveying assembly (22) is used to convey a number of semi-finished products with shaft rings from the feeding area (11) to the discharge area (12). The clamping conveying assembly (24) is used to load and unload the lower mold (64).

4. The thrust needle roller bearing riveting machine according to claim 3, characterized in that: The longitudinal and transverse conveying assembly (22) includes a third fixed frame (221) on the workbench (1). The third fixed frame (221) is provided with a first transverse reciprocating drive (222). The output end of the first transverse reciprocating drive (222) is provided with a fixed plate group (223). The fixed plate group (223) is provided with a second transverse reciprocating drive (224). The output end of the second transverse reciprocating drive (224) is provided with a plurality of conveying claws (225), and the plurality of conveying claws (225) are located on the placement table (21).

5. The thrust needle roller bearing riveting machine according to claim 4, characterized in that: The placement platform (21) is provided with abutment strip (23); the second transverse reciprocating drive (224) is used to drive the conveying claw (225) to move so that the semi-finished product with the shaft ring is placed against the abutment strip (23) and then adjust the position of the semi-finished product with the shaft ring.

6. The thrust needle roller bearing riveting machine according to claim 3, characterized in that: An inspection mechanism (5) is provided on the workbench (1) on one side of the second conveying mechanism (4); the inspection mechanism (5) includes a fourth fixed frame (51) provided on the workbench (1), a vertical reciprocating drive (52) is provided on the fourth fixed frame (51), and an inspection piece (53) is provided on the output end of the vertical reciprocating drive (52). The fourth fixed frame (51) is also provided with a rejection assembly (54), which includes a rejection drive (541) on the fourth fixed frame (51). The placement table (21) has a material leakage hole (542). The output end of the rejection drive (541) is provided with a mating plate (543). The mating plate (543) is fitted into the material leakage hole (542), and the top of the mating plate (543) is flush with the top of the placement table (21). The worktable (1) is provided with a first-stage product collection box (544) below the material leakage hole (542).

7. A riveting method applied to the thrust needle roller bearing riveting machine according to any one of claims 1-6, characterized in that: Includes the following steps: S1. Place the control ring on the lower mold (64), place the seat ring inside the control ring, and drive the electric cylinder (62) to press the seat ring. S2. Place the retainer with the needle rollers into the control ring, and drive the electric cylinder to press the retainer with the needle rollers to obtain a semi-finished product. S3. Unload and collect the semi-finished products, place multiple collected semi-finished products on one side of the first conveying mechanism (3), and load shaft rings onto the second conveying mechanism (4). S4. Drive the first conveying mechanism (3), the second conveying mechanism (4), the inspection mechanism (5), the riveting mechanism (6), and the testing mechanism (7) to press the shaft ring into the semi-finished product to obtain the finished product.

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