Stamping outer ring needle bearing one-time needle detection machine

Abstract

The present application relates to the stamping outer ring needle bearing processing technical field, a kind of stamping outer ring needle bearing one-time needle detection machine, including rack and setting on the rack cage feeding mechanism, needle assembly workstation, needle assembly mechanism, transfer mechanism, stamping outer ring feeding mechanism, stamping outer ring assembly workstation and discharging mechanism, needle assembly workstation includes rotary disc, rotary disc drive assembly for driving rotary disc rotation and a plurality of setting on the rotary disc can realize the positioning of cage rotary edge type jacking tool.The stamping outer ring needle bearing one-time needle detection machine is matched with each mechanism by specially designed rotary edge type jacking tool, greatly improves the assembly efficiency of stamping outer ring needle bearing, while in the assembly process, it can avoid the needle from cage to escape, greatly improves the yield, so as to ensure product quality, reduces production cost.

Description

Technical Field

[0001] This invention relates to the field of stamped outer ring needle roller bearing processing technology, and in particular to a one-time needle loading and testing machine for stamped outer ring needle roller bearings. Background Technology

[0002] Existing stamped outer ring needle roller bearings, such as Figure 1 As shown, it includes a stamped outer ring A, a cage B, and a needle roller C; in the past, special tooling was used for assembly, or customized equipment was used for step-by-step assembly and measurement, both of which required a lot of labor intensity.

[0003] Furthermore, due to the special nature of this bearing, during assembly, when the needle rollers C are inserted into the window of the cage B, since it is not a snap-fit ​​structure, the outer side of the needle rollers C is not restricted. Therefore, whether it is manual or automatic assembly, during the needle insertion process, some needle rollers can easily fall out of the cage B, affecting processing efficiency and yield. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a one-time needle loading and inspection machine for stamped outer ring needle roller bearings that can avoid missing needles, greatly improve processing efficiency, and ensure yield.

[0005] This invention is achieved through the following technical solution:

[0006] This invention provides a one-time needle loading and testing machine for stamped outer ring needle roller bearings, including a frame and a cage feeding mechanism, a needle loading worktable, a needle loading mechanism, a transfer mechanism, a stamped outer ring feeding mechanism, a stamped outer ring assembly worktable, and a discharge mechanism mounted on the frame. The cage feeding mechanism is used to automatically feed the cage. The needle loading worktable is used to receive the cage fed by the cage feeding mechanism and realize the positioning of the cage and the switching between subsequent workstations. The needle loading mechanism is used to automatically feed the needle rollers and load them into the window of the cage in one go. The transfer mechanism is used to send the cage after needle loading into the stamped outer ring assembly worktable. The stamped outer ring feeding mechanism is used to automatically feed the stamped outer ring. The stamped outer ring assembly worktable is used to receive the stamped outer ring and the cage after needle loading. The discharge mechanism is used to receive the assembled stamped outer ring needle roller bearing.

[0007] The needle loading worktable includes a rotary disk, a rotary disk drive assembly for driving the rotary disk to rotate, and several rotary edge-finding lifting fixtures set on the rotary disk to achieve cage positioning.

[0008] To facilitate the rotation and lifting of the cage, thereby simplifying subsequent needle insertion and transfer, in a preferred embodiment of the present invention, the rotary edge-finding lifting fixture includes an outer positioning block, an inner mandrel, an inner support column, a lower pressure plate, an upper push plate, and guide rods. The outer positioning block is fixed on a rotating disk, and several guide rods are fixed at the bottom of the outer positioning block. Springs are sleeved on the guide rods. The lower pressure plate and the upper push plate are slidably connected to the guide rods, and the lower pressure plate is correspondingly positioned below the upper push plate. A locking block is fixed at the bottom of the inner mandrel, and the top of the inner mandrel is positioned inside the outer positioning block and has a positioning insert that can fit into the cage window. A cage positioning channel is formed between the inner mandrel and the outer positioning block. The inner support column is sleeved outside the inner mandrel and can slide up and down along the inner mandrel. The bottom of the inner support column is fixed to the upper push plate, and the top of the inner support column is inserted into the cage positioning channel.

[0009] The outlet end of the cage feeding mechanism is provided with a rotary drive mechanism that can realize the positioning of the cage in the rotary edge-finding lifting fixture. The rotary drive mechanism includes a first lifting drive, a first lifting seat, a first positioning block and a first rotary drive. The first lifting drive is connected to the first lifting seat and can drive it to move up and down. The first positioning block is rotatably connected to the first lifting seat. The top of the first positioning block has a slot that can engage with the locking block at the bottom of the inner mandrel. The first rotary drive is connected to the first positioning block and can drive it to rotate, thereby realizing the rotation of the inner mandrel.

[0010] Below the needle loading mechanism is a corresponding inner and outer double lifting mechanism that can lift the cage inside the rotary edge-finding lifting fixture. The inner and outer double lifting mechanism includes a second lifting drive, a second lifting seat and a second positioning block. The second positioning block is fixed on the second lifting seat. The top of the second positioning block has a slot that can engage with the locking block at the bottom of the inner mandrel. The second lifting drive is connected to the second lifting seat and can drive it to move up and down, thereby realizing the simultaneous lifting of the inner mandrel and the inner support column.

[0011] Below the transfer mechanism is a single-sided lifting mechanism that can lift the needle holder inside the rotary edge-finding lifting fixture. The single-sided lifting mechanism includes a third lifting drive and a lifting rod. The lifting rod is located below the upper push plate. The third lifting drive is connected to the lifting rod and can drive it to move up and down. The lifting rod can push the inner support column through the upper push plate, thereby realizing the individual lifting of the inner support column.

[0012] To facilitate accurate gripping of the retainer and to press it down during its rotational edge-finding process, the retainer feeding mechanism includes a retainer vibrating screen and a retainer feeding assembly located at the outlet end of the vibrating screen. The retainer feeding assembly includes a support platform, a first stop, a first pushing cylinder, a first push rod, a first lifting cylinder, a first lifting plate, and a retainer negative pressure suction head. The support platform has a guide channel connected to the outlet end of the vibrating screen. The first stop is correspondingly located at the outlet end of the guide channel and can block the retainer. The first push rod is correspondingly located on one side of the first stop. The first pushing cylinder and the first... A push rod is connected to the first push cylinder, which can push the retainer at the first stop block forward through the first push rod. The first lifting cylinder is correspondingly set above the support platform and is connected to the first lifting plate. The top of the retainer negative pressure suction head is rotatably connected to the first lifting plate. The bottom of the retainer negative pressure suction head passes through the support platform and is correspondingly set above the first positioning block. The retainer negative pressure suction head is connected to the negative pressure pipeline. The first lifting cylinder can drive the retainer negative pressure suction head to move up and down through the first lifting plate. The retainer negative pressure suction head can adsorb the retainer pushed by the first push rod, send the retainer into the rotary edge-finding lifting fixture, and press the retainer.

[0013] To facilitate one-time needle loading, improve loading efficiency, and prevent needle leakage, the needle loading mechanism includes a needle roller vibrating screen, a guide plate, an upper pressure column, an upper pressure drive, a disposable needle loading sleeve, a needle loading drive, a needle loading ring, and an elastic push block. The guide plate is positioned at the outlet end of the needle roller vibrating screen. The guide plate contains a ring of guide channels that connect to the outlet end of the needle roller vibrating screen and ensure the needle rollers are perpendicular to the horizontal plane during loading. The number of guide channels corresponds to the number of windows on the retainer. The upper pressure column is located at the center of the guide plate. The upper pressure drive and the upper pressure column... The upper pressure drive can drive the upper pressure column to rise and fall, so that the upper pressure column presses against the retainer. The needle loading ring is correspondingly set at the bottom end of the upper pressure column. Several elastic push blocks are elastically connected to the needle loading ring. Each elastic push block corresponds to each guide channel. The disposable needle loading sleeve is sleeved outside the guide plate and is correspondingly set above each elastic push block. The needle loading drive is connected to the disposable needle loading sleeve. The needle loading drive can drive the disposable needle loading sleeve to rise and fall. The disposable needle loading sleeve can drive each elastic push block to retract simultaneously. The elastic push blocks can push each needle roller into the window of the retainer.

[0014] To facilitate the transfer of the retainer after needle loading and prevent the needle rollers from falling out of the retainer window during the transfer process, the transfer mechanism includes a transverse motor, a transverse guide rail, a transverse moving seat, a longitudinal cylinder, a longitudinal moving seat, an inner sleeve, an inner sleeve lifting seat, an inner sleeve lifting cylinder, an outer sleeve, an outer sleeve lifting seat, an outer sleeve lifting cylinder, and guide rods. The transverse motor drives the transverse moving seat to slide horizontally along the transverse guide rail. The longitudinal cylinder is mounted on the transverse moving seat and drives the longitudinal moving seat to move up and down. The guide rods are a set and fixed to the longitudinal moving seat. The inner sleeve lifting seat and the outer sleeve lifting seat are slidably connected to the guide rods. The inner sleeve is fixed to the inner sleeve lifting seat, and the outer sleeve is fixed to the outer sleeve lifting seat. There is a groove between the inner sleeve and the outer sleeve for the retainer to be inserted after needle loading. The groove is connected to a negative pressure pipeline. The inner sleeve lifting cylinder drives the inner sleeve to move up and down through the inner sleeve lifting seat, and the outer sleeve lifting cylinder drives the outer sleeve to move up and down through the outer sleeve lifting seat.

[0015] To facilitate the feeding of the stamped outer ring, the stamped outer ring feeding mechanism includes a stamped outer ring vibrating screen and a stamped outer ring feeding assembly disposed at the outlet end of the vibrating screen. The stamped outer ring feeding assembly includes a support, a second stop block, a second pushing cylinder, a second push rod, a second lifting cylinder, a second lifting plate, and a stamped outer ring negative pressure suction head. The support is provided with a guide channel communicating with the outlet end of the vibrating screen. The second stop block is correspondingly disposed at the outlet end of the guide channel and can block the stamped outer ring. The second push rod is correspondingly disposed on one side of the second stop block. The cylinder is connected to the second push rod. The second push cylinder can push the stamped outer ring at the second stop forward through the second push rod. The second lifting cylinder is correspondingly set above the support and is connected to the second lifting plate. The stamped outer ring negative pressure suction head is fixed on the second lifting plate, and its bottom end passes through the support. The stamped outer ring negative pressure suction head is connected to the negative pressure pipeline. The second lifting cylinder can drive the stamped outer ring negative pressure suction head to move up and down through the second lifting plate. The stamped outer ring negative pressure suction head can adsorb the stamped outer ring pushed by the second push rod and send the stamped outer ring into the positioning fixture of the stamped outer ring assembly worktable.

[0016] To facilitate the assembly of the stamped outer ring with the retainer after needle mounting, the stamped outer ring assembly worktable includes an assembly table, an assembly table drive assembly for driving the assembly table to rotate, and several positioning fixtures disposed on the assembly table to position the stamped outer ring. The positioning fixtures include positioning blocks, which are fixed on the assembly table and have positioning grooves inside the positioning blocks to position the stamped outer ring.

[0017] To further ensure the yield rate, the stamping outer ring assembly worktable is equipped with a vision system that can detect whether the stamping outer ring needle roller bearing is assembled in place.

[0018] To facilitate the sorting and collection of defective and qualified products, the discharge mechanism includes a discharge robot, a defective product discharge platform and a qualified product discharge platform respectively set on one side of the discharge robot.

[0019] The beneficial effects of this invention are: the one-time needle loading and testing machine for stamped outer ring needle roller bearings, through the cooperation of specially designed rotary edge-finding lifting fixtures and various mechanisms, greatly improves the assembly efficiency of stamped outer ring needle roller bearings. At the same time, during the assembly process, it can prevent the needle rollers from coming out of the cage, greatly improving the yield rate, thereby ensuring product quality and reducing production costs. Attached Figure Description

[0020] Figure 1 A three-dimensional structural diagram of an existing stamped outer ring needle roller bearing;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the stamped outer ring needle roller bearing one-time needle loading and testing machine of the present invention;

[0022] Figure 3 This is a three-dimensional structural schematic diagram of the cage feeding mechanism of the present invention;

[0023] Figure 4 This is a three-dimensional structural schematic diagram of the cage feeding assembly of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the needle loading worktable of the present invention;

[0025] Figure 6 This is a three-dimensional structural diagram of the rotary edge-finding lifting fixture of the present invention;

[0026] Figure 7 This is a cross-sectional view of the rotary edge-finding lifting fixture of the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the inner mandrel of the present invention;

[0028] Figure 9 This is a three-dimensional structural diagram of the needle loading mechanism of the present invention;

[0029] Figure 10 This is a partial structural schematic diagram of the needle loading mechanism of the present invention;

[0030] Figure 11 This is a three-dimensional structural diagram of the transfer mechanism of the present invention;

[0031] Figure 12 This is a three-dimensional structural schematic diagram of the stamping outer ring feeding mechanism of the present invention;

[0032] Figure 13This is a three-dimensional structural diagram of the stamping outer ring assembly worktable of the present invention;

[0033] Figure 14 This is a three-dimensional structural diagram of the discharge mechanism of the present invention. Detailed Implementation

[0034] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0035] like Figure 2 The machine shown is a one-time needle loading and testing machine for stamped outer ring needle roller bearings. It includes a frame 1 and a cage feeding mechanism 2, a needle loading worktable 3, a needle loading mechanism 4, a transfer mechanism 5, a stamped outer ring feeding mechanism 6, a stamped outer ring assembly worktable 7, and a discharge mechanism 8, all mounted on the frame 1. The cage feeding mechanism 2 is used to automatically feed the cage. The needle loading worktable 3 is used to receive the cage fed by the cage feeding mechanism 2 and to realize the positioning of the cage and the switching between subsequent workstations. The needle loading mechanism 4 is used to automatically feed the needle rollers and load them into the window of the cage in one go. The transfer mechanism 5 is used to send the cage after needle loading into the stamped outer ring assembly worktable 7. The stamped outer ring feeding mechanism 6 is used to automatically feed the stamped outer ring. The stamped outer ring assembly worktable 7 is used to receive the stamped outer ring and the cage after needle loading. The discharge mechanism 8 is used to receive the assembled stamped outer ring needle roller bearing.

[0036] Specifically, in combination Figure 3 , Figure 4 As shown, the cage feeding mechanism includes a cage vibrating screen 201 and a cage feeding assembly 202 disposed at the outlet end of the cage vibrating screen 201;

[0037] The cage feeding assembly 202 includes a support platform 2021, a first stop block 2022, a first push cylinder 2024, a first push rod 2023, a first lifting cylinder 2025, a first lifting plate 2026, and a cage negative pressure suction head 2027. The support platform 2021 is provided with a guide channel communicating with the outlet end of the cage vibrating screen 201. The first stop block 2022 is correspondingly located at the outlet end of the guide channel. The first stop block 2022 can block the cage, and the first stop block 2022 and the support platform 2021 are elastically connected by a spring to prevent the cage from being squeezed and deformed. The first push rod 2023 is correspondingly located on one side of the first stop block 2022 and is perpendicular to the guide channel. The first push cylinder 2024 is connected to the first push rod 2023. 24 can push the retainer at the first stop 2022 forward through the first push rod 2023. At the same time, the support platform 2021 has guide blocks on both sides that can guide the retainer. The guide blocks have a certain elasticity. The first lifting cylinder 2025 is correspondingly set above the support platform 2021. The first lifting cylinder 2025 is connected to the first lifting plate 2026. The top of the retainer negative pressure suction head 2027 is rotatably connected to the first lifting plate 2026. The bottom of the retainer negative pressure suction head 2027 penetrates through the support platform 2021. The retainer negative pressure suction head 2027 is connected to the negative pressure pipeline. The first lifting cylinder 2025 can drive the retainer negative pressure suction head 2027 to move up and down through the first lifting plate 2026. The retainer negative pressure suction head 2027 can adsorb the retainer pushed by the first push rod 2023 and send the retainer into the subsequent rotary edge-finding lifting fixture.

[0038] In addition, a rotary drive mechanism is correspondingly provided below the cage feeding assembly 202. The rotary drive mechanism includes a first lifting drive, a first lifting seat 3012, a first positioning block 3014 and a first rotary drive. The first lifting drive adopts a cylinder 3011 and the first rotary drive adopts a motor 3013. The first lifting drive is connected to the first lifting seat 3012 and can drive it to lift up and down. The first positioning block 3014 is rotatably connected to the first lifting seat 3012 and is opposite to the cage negative pressure suction head 2027. The top of the first positioning block 3014 has a slot. The first rotary drive is connected to the first positioning block 3014 and can drive it to rotate.

[0039] Specifically, in combination Figure 5As shown, the needle loading worktable includes a rotary disk 302, a rotary disk drive assembly for driving the rotary disk 302 to rotate, and several rotary edge-finding lifting fixtures 304 disposed on the rotary disk 302 to achieve cage positioning. The rotary disk drive assembly adopts a rotary servo motor 303. There are multiple rotary edge-finding lifting fixtures 304, which are detachably disposed on the rotary disk 302 and can realize the switching of the cage between different work positions.

[0040] Combination Figure 6-8 As shown, the rotary edge-finding lifting fixture includes an outer positioning block 3041, an inner mandrel 3042, an inner support column 3043, a lower pressure plate 3044, an upper push plate 3045, and guide rods 3046. The outer positioning block 3041 is fixed on the rotating disk 302. Several guide rods 3046 are fixed to the bottom end of the outer positioning block 3041. Springs 3047 are sleeved on the guide rods 3046. The lower pressure plate 3044 and the upper push plate 3045 are slidably connected to the guide rods 3046, and the lower pressure plate 3044 is correspondingly positioned below the upper push plate 3045. A lower limit screw is fixed to the bottom end of the guide rod 3046. In addition, several clearance holes are opened on the lower pressure plate 3044 to facilitate the lifting rod of the subsequent cylinder to pass through the lower pressure plate 3044 to lift the upper push plate 3045. A pair of locking blocks 3048 are fixed at the bottom of the spindle 3042. The locking blocks 3048 can engage with the first positioning block 3014. The top of the inner spindle 3042 is set inside the outer positioning block 3041 and has a positioning insert 3049 that can fit into the cage window. The positioning insert 3049 has a certain elasticity and can deflect inward under pressure. At the same time, the top of the inner spindle 3042 also has an arc-shaped groove 3040 for a ring of needle rollers to be inserted. A cage positioning channel is formed between the top of the inner spindle 3042 and the outer positioning block 3041. The inner support column 3043 is sleeved on the outside of the inner spindle 3042 and can slide up and down along the inner spindle 3042. The bottom of the inner support column 3043 is fixed to the upper push plate 3045, and the top of the inner support column 3043 is inserted into the cage positioning channel.

[0041] Specifically, in combination Figure 9-10As shown, the needle loading mechanism includes a needle roller vibrating screen, a guide plate 401, an upper pressure column 402, an upper pressure drive, a disposable needle loading sleeve 404, a needle loading drive, a needle loading ring 406, and an elastic push block 408. Multiple needle roller vibrating screens are included. The guide plate 401 is correspondingly located at the outlet end of the needle roller vibrating screen. A ring of guide channels 4011 is formed within the guide plate 401, communicating with the outlet end of the needle roller vibrating screen and ensuring the needles are perpendicular to the horizontal plane during feeding. The number of guide channels 4011 is the same as the number of windows on the retainer. The upper pressure column 402 is located at the center of the guide plate 401. The upper pressure drive uses a servo electric cylinder 403 connected to the upper pressure column 402. The upper pressure drive can drive the upper pressure column 402 to rise and fall, causing the upper pressure column 402 to press against the retainer inside the rotary edge-finding lifting fixture 304. The holder has a needle-loading ring 406 correspondingly disposed at the bottom end of the upper pressure column 402. Several elastic push blocks 408 are elastically connected to the needle-loading ring 406. Each elastic push block 408 corresponds to a guide channel 4011 and a needle roller. The front end of the elastic push block 408 is inclined, so that it can cooperate with the disposable needle-loading sleeve 404 to achieve back-and-forth movement. The disposable needle-loading sleeve 404 is sleeved on the outside of the guide plate 401 and is correspondingly disposed above each elastic push block 408. The needle-loading drive adopts a cylinder 405, which is connected to the disposable needle-loading sleeve 404 through a connecting plate 4051. The needle-loading drive can drive the disposable needle-loading sleeve 404 to move up and down. The disposable needle-loading sleeve 404 can drive each elastic push block 408 to retract simultaneously. The elastic push blocks 408 can push each needle roller into the window of the holder.

[0042] In addition, a double lifting mechanism is provided below the needle loading mechanism to lift the cage inside the rotary edge-finding lifting fixture. The double lifting mechanism includes a second lifting drive, a second lifting seat 4072 and a second positioning block 4073. The second positioning block 4073 is fixed on the second lifting seat 4072. The second positioning block 4073 and the upper pressure column 402 are on the same axis. The top of the second positioning block 4073 has a slot that can engage with the locking block 3048 at the bottom of the inner mandrel 3042 of the rotary edge-finding lifting fixture. The second lifting drive adopts a servo electric cylinder 4071, which is connected to the second lifting seat 4072 and can drive it to move up and down.

[0043] Specifically, in combination Figure 11As shown, the transfer mechanism includes a horizontal motor 501, a horizontal guide rail 502, a horizontal moving seat 503, a longitudinal cylinder 504, a longitudinal moving seat 505, an inner sleeve 506, an inner sleeve lifting seat 507, an inner sleeve lifting cylinder 508, an outer sleeve 509, an outer sleeve lifting seat 5010, an outer sleeve lifting cylinder 5011, and guide rods 5012. The horizontal motor 501 can drive the horizontal moving seat 503 to slide horizontally along the horizontal guide rail 502. The longitudinal cylinder 504 is disposed on the horizontal moving seat 503 and can drive the longitudinal moving seat 505 to move up and down. The guide rods 5012 are a set and fixed on the longitudinal moving seat 505. The inner sleeve lifting seat 507 and the outer sleeve lifting seat 5010 are slidably connected to the guide rod 5012, and the inner sleeve lifting seat 507 is located above the outer sleeve lifting seat 5010. The inner sleeve 506 is fixed to the inner sleeve lifting seat 507, and the outer sleeve 509 is fixed to the outer sleeve lifting seat 5010. There is a groove between the bottom ends of the inner sleeve 506 and the outer sleeve 509 for the retainer after needle loading to be inserted. The groove is connected to the negative pressure pipeline. The inner sleeve lifting cylinder 508 can drive the inner sleeve 506 to move up and down through the inner sleeve lifting seat 507, and the outer sleeve lifting cylinder 5011 can drive the outer sleeve 509 to move up and down through the outer sleeve lifting seat 5010.

[0044] In addition, a single-sided lifting mechanism is provided below the transfer mechanism to lift the needle-loaded retainer in the rotary edge-finding lifting fixture. The single-sided lifting mechanism includes a third lifting drive and lifting rods 5013. There are multiple lifting rods 5013, which are correspondingly arranged below the upper push plate 3045 of the rotary edge-finding lifting fixture. The third lifting drive adopts a lifting cylinder 5014, which is connected to the lifting rods 5013 and can drive them to move up and down. The lifting rods 5013 can push the inner support column 3043 through the upper push plate 3045 to realize the independent lifting of the inner support column 3043. Then the needle-loaded retainer can enter the groove between the inner sleeve 506 and the outer sleeve 509 and be attracted and transferred to the subsequent work station.

[0045] Specifically, in combination Figure 12As shown, the stamping outer ring feeding mechanism includes a stamping outer ring vibrating screen and a stamping outer ring feeding assembly disposed at the outlet end of the stamping outer ring vibrating screen. The stamping outer ring feeding assembly includes a support 601, a second stop 602, a second pushing cylinder 603, a second push rod 604, a second lifting cylinder 605, a second lifting plate 606, and a stamping outer ring negative pressure suction head 607. The support 601 is provided with a guide channel communicating with the outlet end of the stamping outer ring vibrating screen. The second stop 602 is correspondingly disposed at the outlet end of the guide channel. The second stop 602 can block the stamping outer ring, and the second stop 602 and the support 601 are elastically connected by a spring to prevent the stamping outer ring from being squeezed by the second stop 602 and deformed. The second push rod 604 is correspondingly disposed on one side of the second stop 602. 04 is perpendicular to the guide channel. The second pushing cylinder 603 is connected to the second push rod 604. The second pushing cylinder 603 can push the stamped outer ring at the second stop 602 forward through the second push rod 604. The second lifting cylinder 605 is correspondingly set above the support 601. The second lifting cylinder 605 is connected to the second lifting plate 606. The stamped outer ring negative pressure suction head 607 is fixed on the second lifting plate 606. Its bottom end passes through the support 601. The stamped outer ring negative pressure suction head 607 is connected to the negative pressure pipeline. The second lifting cylinder 605 can drive the stamped outer ring negative pressure suction head 607 to move up and down through the second lifting plate 606. The stamped outer ring negative pressure suction head 607 can absorb the stamped outer ring pushed by the second push rod 604 and send the stamped outer ring into the positioning fixture of the stamped outer ring assembly worktable.

[0046] Specifically, in combination Figure 13 As shown, the stamping outer ring assembly worktable includes an assembly table 701, an assembly table drive assembly for driving the assembly table 701 to rotate, and several positioning fixtures disposed on the assembly table 701 to achieve positioning of the stamping outer ring. The assembly table drive assembly adopts a rotary servo motor 702. The positioning fixtures include a positioning block 703, which is fixed on the assembly table 701. The positioning block 703 has a positioning groove that can position the stamping outer ring.

[0047] In addition, the stamping outer ring assembly worktable is also equipped with a vision system 704 that can detect whether the stamping outer ring needle roller bearing is assembled in place.

[0048] Specifically, in combination Figure 14 As shown, the discharge mechanism includes a discharge robot 801, a defective product discharge platform 802 and a qualified product discharge platform 803 respectively arranged on one side of the discharge robot 801. The discharge robot 801 can send the assembled stamped outer ring needle roller bearing to the defective product discharge platform 802 or the qualified product discharge platform 803.

[0049] The working principle of this invention is as follows:

[0050] During processing, combined Figure 1-14 As shown, the retainer feeding mechanism 2 automatically conveys the retainer via the retainer vibrating screen 201. The retainer is blocked and positioned by the first stop 2022. The first push cylinder 2024 pushes the retainer at the first stop 2022 forward via the first push rod 2023. The first lifting cylinder 2025 drives the retainer negative pressure suction head 2027 to descend via the first lifting plate 2026. The retainer negative pressure suction head 2027 adsorbs the retainer pushed by the first push rod 2023 and sends the retainer into the rotary edge-finding lifting fixture. At this time, the retainer negative pressure suction head 2027 still adsorbs the retainer.

[0051] Meanwhile, cylinder 3011 drives the first positioning block 3014 to rise via the first lifting seat 3012. The first positioning block 3014 engages with the inner spindle 3042 of the rotary edge-finding lifting fixture. The first positioning block 3014 continues to rise, pushing the inner spindle 3042 and the inner support column 3043 to rise simultaneously until the retainer is completely fitted onto the inner spindle 3042, and the top surface of the inner spindle 3042 abuts against the bottom surface of the retainer negative pressure suction head 2027. Since the direction of the retainer in the vibrating screen is not fixed, it is necessary to find the edge of the retainer. Positioning: Motor 3013 drives the first positioning block 3014 to rotate axially, and the inner spindle 3042 rotates (at this time, the cage is attracted and does not rotate). Then, the positioning insert 3049 at the top of the inner spindle 3042 is inserted into the nearest window of the cage, realizing the relative engagement between the inner spindle 3042 and the cage. After engagement, motor 3013 drives the inner spindle 3042 to drive the cage to rotate. The negative pressure suction head 2027 of the cage abandons the cage, and the inner spindle 3042 descends. Then, the cage enters the rotary edge-finding lifting fixture, completing the edge-finding positioning.

[0052] After positioning is completed, the rotary servo motor 303 drives the rotary disk 302 to rotate, and the rotary edge-finding lifting fixture carrying the cage moves to the needle loading mechanism 4. At this time, the servo cylinder 4071 drives the second lifting seat 4072 to rise, and the second positioning block 4073 engages with the locking block 3048 at the bottom of the inner mandrel 3042 of the rotary edge-finding lifting fixture. The second positioning block 4073 continues to rise, driving the inner mandrel 3042 and the inner support column 3043 to rise simultaneously. After reaching the position, the guide plate 401 completes one unloading operation. At this time, a ring of needle rollers is located above the outer side of the cage and close to the window on the cage. One-to-one correspondence, the bottom of the needle roller is supported by the elastic push block 408, the cylinder 405 drives the disposable needle sleeve 404 to descend through the connecting plate 4051. Since the elastic push block 408 is a trapezoidal structure, the disposable needle sleeve 404 pushes each elastic push block 408 to retract at the same time, so the needle roller falls and is supported by the inner support column 3043. The disposable needle sleeve 404 rises, and under the elastic force of the elastic push block 408, pushes each needle roller into the window of the cage to complete the disposable needle loading. The inner mandrel 3042 and the inner support column 3043 descend, and the cage after needle loading returns to the rotary edge-finding lifting fixture.

[0053] After the needles are loaded, the rotary servo motor 303 drives the rotary disk 302 to rotate. The rotary edge-finding lifting fixture carrying the needle-loaded retainer moves to the transfer mechanism 5. The lifting cylinder 5014 drives each lifting rod 5013 to rise. The lifting rod 5013 pushes the inner support column 3043 to rise independently through the upper push plate 3045 (at this time, the inner mandrel 3042 does not rise). The needle-loaded retainer moves upward. At this time, the lifting cylinder 508 drives the inner sleeve 506 to fall through the inner sleeve lifting seat 507. The outer sleeve lifting cylinder 5011 drives the outer sleeve 509 to fall through the outer sleeve lifting seat 5010. The needle-loaded retainer enters the gap between the inner sleeve 506 and the outer sleeve 509 and is attracted under negative pressure. Due to the limiting effect of the inner sleeve 506 and the outer sleeve 509, the needles will not fall out of the retainer, thus avoiding the occurrence of needle leakage.

[0054] After adsorption is completed, the transfer mechanism sends the needle-loaded retainer to the assembly table 701. At this time, the stamping outer ring vibrating screen sends the stamping completely to the second stop 602. The second push cylinder 603 pushes the stamping outer ring at the second stop 602 forward through the second push rod 604. The second lifting cylinder 605 drives the stamping outer ring negative pressure suction head 607 to descend through the second lifting plate 606. The stamping outer ring negative pressure suction head 607 adsorbs the stamping outer ring and sends it into the positioning fixture of the stamping outer ring assembly table. It is positioned by the positioning block 703. The inner sleeve 506 drives the needle-loaded retainer to descend separately. At this time, the negative pressure is turned off, and the needle-loaded retainer is pressed into the stamping outer ring of the positioning block 703, thereby completing the assembly of the stamping outer ring and the retainer.

[0055] After assembly, the vision system 704 checks whether the product is qualified. If it is qualified, the unloading robot 801 sends the qualified product to the qualified unloading platform 803 for collection. If it is unqualified, the unloading robot 801 sends the unqualified product to the defective product unloading platform 802 for collection.

[0056] It should be noted that each drive in this invention can be replaced by a cylinder, electric cylinder, motor, hydraulic cylinder, etc., combined with a connecting plate, coupling, etc., and is not limited to the relevant structures shown in the drawings; and each drive in this invention is equipped with a sensor at the corresponding position to sense whether the action is in place.

[0057] In the description of this invention, the terms “center,” “upper,” “lower,” “left,” “right,” “between,” “horizontal,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A one-time needle loading and inspection machine for stamped outer ring needle roller bearings, comprising a frame and a cage feeding mechanism, a needle loading worktable, a needle loading mechanism, a transfer mechanism, a stamped outer ring feeding mechanism, a stamped outer ring assembly worktable, and a discharge mechanism mounted on the frame. The cage feeding mechanism is used to automatically feed the cage; the needle loading worktable is used to receive the cage fed by the cage feeding mechanism and to realize the positioning of the cage and switching between subsequent workstations; the needle loading mechanism is used to automatically feed the needle rollers and load them into the window of the cage in one go; the transfer mechanism is used to send the cage after needle loading into the stamped outer ring assembly worktable; the stamped outer ring feeding mechanism is used to automatically feed the stamped outer ring; the stamped outer ring assembly worktable is used to receive the stamped outer ring and the cage after needle loading; and the discharge mechanism is used to receive the assembled stamped outer ring needle roller bearings, characterized in that: The needle loading worktable includes a rotary disk, a rotary disk drive assembly that drives the rotary disk to rotate, and several rotary edge-finding lifting fixtures that are set on the rotary disk to achieve cage positioning. The rotary edge-finding lifting fixture includes an outer positioning block, an inner mandrel, an inner support column, a lower pressure plate, an upper push plate, and guide rods. The outer positioning block is fixed on a rotating disk, and several guide rods are fixed at the bottom of the outer positioning block. Springs are sleeved on the guide rods. The lower pressure plate and the upper push plate are slidably connected to the guide rods, and the lower pressure plate is correspondingly positioned below the upper push plate. A locking block is fixed at the bottom of the inner mandrel, and the top of the inner mandrel is set inside the outer positioning block and has a positioning insert that can fit into the cage window. A cage positioning channel is formed between the inner mandrel and the outer positioning block. The inner support column is sleeved outside the inner mandrel and can slide up and down along the inner mandrel. The bottom of the inner support column is fixed to the upper push plate, and the top of the inner support column is inserted into the cage positioning channel. The outlet end of the cage feeding mechanism is provided with a rotary drive mechanism that can realize the positioning of the cage in the rotary edge-finding lifting fixture. The rotary drive mechanism includes a first lifting drive, a first lifting seat, a first positioning block and a first rotary drive. The first lifting drive is connected to the first lifting seat and can drive it to move up and down. The first positioning block is rotatably connected to the first lifting seat. The top of the first positioning block has a slot that can engage with the locking block at the bottom of the inner mandrel. The first rotary drive is connected to the first positioning block and can drive it to rotate, thereby realizing the rotation of the inner mandrel. Below the needle loading mechanism is a corresponding inner and outer double lifting mechanism that can lift the cage inside the rotary edge-finding lifting fixture. The inner and outer double lifting mechanism includes a second lifting drive, a second lifting seat and a second positioning block. The second positioning block is fixed on the second lifting seat. The top of the second positioning block has a slot that can engage with the locking block at the bottom of the inner mandrel. The second lifting drive is connected to the second lifting seat and can drive it to move up and down, thereby realizing the simultaneous lifting of the inner mandrel and the inner support column. Below the transfer mechanism is a single-sided lifting mechanism that can lift the needle holder inside the rotary edge-finding lifting fixture. The single-sided lifting mechanism includes a third lifting drive and a lifting rod. The lifting rod is located below the upper push plate. The third lifting drive is connected to the lifting rod and can drive it to move up and down. The lifting rod can push the inner support column through the upper push plate, thereby realizing the individual lifting of the inner support column.

2. The one-time needle loading and testing machine for stamped outer ring needle roller bearings according to claim 1, characterized in that: The cage feeding mechanism includes a cage vibrating screen and a cage feeding assembly disposed at the outlet end of the cage vibrating screen. The cage feeding assembly includes a support platform, a first stop block, a first push cylinder, a first push rod, a first lifting cylinder, a first lifting plate, and a cage negative pressure suction head. The support platform is provided with a guide channel communicating with the outlet end of the cage vibrating screen. The first stop block is correspondingly disposed at the outlet end of the guide channel and can block the cage. The first push rod is correspondingly disposed on one side of the first stop block. The first push cylinder is connected to the first push rod and can pass through the first push cylinder. The first push rod pushes the retainer at the first stop forward. The first lifting cylinder is correspondingly set above the support platform and is connected to the first lifting plate. The top of the retainer negative pressure suction head is rotatably connected to the first lifting plate. The bottom of the retainer negative pressure suction head passes through the support platform and is correspondingly set above the first positioning block. The retainer negative pressure suction head is connected to the negative pressure pipeline. The first lifting cylinder can drive the retainer negative pressure suction head to move up and down through the first lifting plate. The retainer negative pressure suction head can adsorb the retainer pushed by the first push rod, send the retainer into the rotary edge-finding lifting fixture, and press the retainer.

3. The one-time needle loading and testing machine for stamped outer ring needle roller bearings according to claim 2, characterized in that: The needle loading mechanism includes a needle roller vibrating screen, a guide plate, an upper pressure column, an upper pressure drive, a disposable needle loading sleeve, a needle loading drive, a needle loading ring, and an elastic push block. The guide plate is correspondingly located at the outlet end of the needle roller vibrating screen. The guide plate has a ring of guiding channels that communicate with the outlet end of the needle roller vibrating screen and ensure the needle rollers are perpendicular to the horizontal plane during feeding. The number of guiding channels corresponds to the number of windows on the retainer. The upper pressure column is located at the center of the guide plate, and the upper pressure drive is connected to the upper pressure column, enabling the upper pressure drive to lift the upper pressure column. The upper pressure column is lowered to press against the retainer. The needle loading ring is correspondingly set at the bottom end of the upper pressure column. Several elastic push blocks are elastically connected to the needle loading ring. Each elastic push block corresponds to a material guide channel. The disposable needle loading sleeve is sleeved outside the material guide plate and is correspondingly set above each elastic push block. The needle loading drive is connected to the disposable needle loading sleeve. The needle loading drive can drive the disposable needle loading sleeve to rise and fall. The disposable needle loading sleeve can drive each elastic push block to retract simultaneously. The elastic push blocks can push each needle roller into the window of the retainer.

4. The one-time needle loading and testing machine for stamped outer ring needle roller bearings according to claim 3, characterized in that: The transfer mechanism includes a transverse motor, a transverse guide rail, a transverse moving seat, a longitudinal cylinder, a longitudinal moving seat, an inner sleeve, an inner sleeve lifting seat, an inner sleeve lifting cylinder, an outer sleeve, an outer sleeve lifting seat, an outer sleeve lifting cylinder, and guide rods. The transverse motor can drive the transverse moving seat to slide horizontally along the transverse guide rail. The longitudinal cylinder is mounted on the transverse moving seat and can drive the longitudinal moving seat to move up and down. The guide rods are a set and fixed on the longitudinal moving seat. The inner sleeve lifting seat and the outer sleeve lifting seat are slidably connected to the guide rods. The inner sleeve is fixed to the inner sleeve lifting seat, and the outer sleeve is fixed to the outer sleeve lifting seat. There is a groove between the inner sleeve and the outer sleeve for the retainer to be inserted after needle loading. The groove is connected to a negative pressure pipeline. The inner sleeve lifting cylinder can drive the inner sleeve to move up and down through the inner sleeve lifting seat, and the outer sleeve lifting cylinder can drive the outer sleeve to move up and down through the outer sleeve lifting seat.

5. The one-time needle loading and testing machine for stamped outer ring needle roller bearings according to claim 4, characterized in that: The stamping outer ring feeding mechanism includes a stamping outer ring vibrating screen and a stamping outer ring feeding assembly disposed at the outlet end of the stamping outer ring vibrating screen. The stamping outer ring feeding assembly includes a support, a second stop block, a second push cylinder, a second push rod, a second lifting cylinder, a second lifting plate, and a stamping outer ring negative pressure suction head. The support is provided with a guide channel communicating with the outlet end of the stamping outer ring vibrating screen. The second stop block is correspondingly disposed at the outlet end of the guide channel and can block the stamping outer ring. The second push rod is correspondingly disposed on one side of the second stop block. The second push cylinder and the second push rod... The second push cylinder can push the stamped outer ring at the second stop block forward through the second push rod. The second lifting cylinder is correspondingly set above the support and is connected to the second lifting plate. The stamped outer ring negative pressure suction head is fixed on the second lifting plate, and its bottom end passes through the support. The stamped outer ring negative pressure suction head is connected to the negative pressure pipeline. The second lifting cylinder can drive the stamped outer ring negative pressure suction head to move up and down through the second lifting plate. The stamped outer ring negative pressure suction head can adsorb the stamped outer ring pushed by the second push rod and send the stamped outer ring into the positioning fixture of the stamped outer ring assembly worktable.

6. The one-time needle loading and testing machine for stamped outer ring needle roller bearings according to claim 5, characterized in that: The stamping outer ring assembly worktable includes an assembly table, an assembly table drive assembly for driving the assembly table to rotate, and several positioning fixtures disposed on the assembly table to achieve positioning of the stamping outer ring. The positioning fixtures include positioning blocks, which are fixed on the assembly table and have positioning grooves inside the positioning blocks to position the stamping outer ring.

7. The one-time needle loading and testing machine for stamped outer ring needle roller bearings according to claim 6, characterized in that: The stamping outer ring assembly workbench is equipped with a vision system capable of detecting whether the stamping outer ring needle roller bearing is properly assembled.

8. The one-time needle loading and testing machine for stamped outer ring needle roller bearings according to claim 6, characterized in that: The discharge mechanism includes a discharge robot arm, a defective product discharge platform and a qualified product discharge platform respectively set on one side of the discharge robot arm.

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