Automatic mark engraving device for bearing outer ring

Abstract

The invention discloses an automatic identification engraving device for a bearing outer ring. The automatic identification engraving device comprises a rack, an inner ring belt laser marking machine, an outer ring belt laser marking machine, an information identification device, a feeding conveying belt, a discharging conveying belt and an identification execution unit. The machine frame comprises a machine box covered with a machine box panel and a mechanism installation box fixed to the top of the machine box. The inner ring belt laser marking machine and the outer ring belt laser marking machine are arranged at the front middle part of the case panel; the information identification device comprises an information identification camera which is installed on the right side face of the outer ring belt laser marking machine and located above the identification station. The feeding conveyor belt and the discharging conveyor belt are installed on the left side and the right side of the mechanism installation box in a one-to-one correspondence mode. The identification execution unit is installed on an identification station of the mechanism installation box and comprises an identification station base, a positioning mechanism, a clamping mechanism, a discharging jacking mechanism and a buffering mechanism. According to the invention, no human intervention in the whole process from feeding to discharging is realized, the labor cost and the labor intensity are obviously reduced, and the position of each two-dimensional code on the bearing ring belt is ensured to be accurate, consistent, clear and wear-resistant.

Description

Technical Field

[0001] This invention relates to an automated marking and engraving device for the outer ring of a bearing. Background Technology

[0002] Each bearing outer ring has various markings on its outer surface, including: bearing model, manufacturer code, manufacturing date, bearing serial number, and overhaul markings. This information is crucial for ensuring proper bearing installation and maintenance.

[0003] Traditional bearing marking methods often involve mechanical stamping or label pasting. The former is prone to damaging the workpiece, while the latter is prone to wear and tear. Neither method can easily carry automatically identifiable digital information (such as QR codes).

[0004] Existing semi-automatic marking and engraving equipment has the following shortcomings: 1. It requires manual loading, unloading and positioning, which is labor-intensive, has low production efficiency, and is difficult to integrate into modern fully automated production lines.

[0005] 2. The lack of effective in-situ detection and circumferential positioning mechanisms leads to inconsistent label positions, affecting aesthetics and subsequent recognition.

[0006] 3. The marking engraving system and the marking recognition system are usually independent of each other. The engraved content cannot be immediately verified and entered by the recognition system, making it difficult to achieve real-time binding and traceability of production data with physical products.

[0007] 4. Material accumulation and jamming are prone to occur during loading and unloading, making it impossible to achieve truly unmanned continuous operation. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automated marking device for the outer ring of a bearing. It achieves unmanned operation from loading to unloading, significantly reducing labor costs and labor intensity, and ensuring that each QR code is accurately and consistently positioned on the bearing ring, clear and wear-resistant.

[0009] The objective of this invention is achieved as follows: an automated marking and engraving device for the outer ring of a bearing, comprising a frame, an inner ring laser marking machine, an outer ring laser marking machine, an information recognition device, a feeding conveyor belt, an output conveyor belt, a marking execution unit, a sensing unit, and a controller; The frame includes a rectangular chassis and a mechanism mounting box; the top of the chassis is covered with a chassis panel; the mechanism mounting box is fixed to the middle and rear part of the chassis panel, a pair of feed conveyor belt fixing brackets are installed on the left side of the bottom plate of the mechanism mounting box, and a pair of discharge conveyor belt fixing brackets are installed on the right side of the mechanism mounting box; the middle part of the mechanism mounting box is a workstation for identification. The inner ring laser marking machine is installed in the front center of the chassis panel via a first lifting mechanism; the outer ring laser marking machine is installed in the front center of the chassis panel via a second lifting mechanism and is located above the inner ring laser marking machine. The information recognition device includes an information recognition camera and a matching light source; the information recognition camera is installed on the right side of the outer ring laser marking machine and located above the marking station; The feed conveyor belt is installed between a pair of feed conveyor belt fixing brackets on the frame; The discharge conveyor belt is installed between a pair of discharge conveyor belt fixing brackets on the frame and is lower than the feed conveyor belt; The marking execution unit is installed at the marking station of the frame and includes a marking station seat, a positioning mechanism, a clamping mechanism, a discharge lifting mechanism, and a buffer mechanism; wherein, The marking station seat is installed on the marking station of the mechanism mounting box and includes a front end plate installed between the front feeding conveyor belt limit bracket and the left discharging conveyor belt limit bracket, a rear end plate installed between the rear feeding conveyor belt limit bracket and the rear discharging conveyor belt limit bracket, and a bottom plate connected between the bottom of the front end plate and the bottom of the rear end plate. The positioning mechanism includes a positioning backrest and a positioning cylinder; the positioning backrest is installed on the upper middle part of the inner side of the front end plate of the marking workstation; the positioning cylinder is installed laterally on the upper middle part of the rear end plate of the marking workstation, opposite to the positioning backrest. The clamping mechanism includes a clamping drive motor installed on the lower left of the rear end plate of the marking station, a clamping active roller connected to the clamping drive motor via a first transmission belt between the upper left of the front end plate and the upper left of the rear end plate, and a clamping passive roller connected to the clamping active roller via a second transmission belt between the upper right of the front end plate and the upper right of the rear end plate of the marking station. The discharge lifting mechanism includes a discharge lifting cylinder mounted on the base plate of the marking workstation seat via a first cylinder mounting plate and located to the right of the clamping drive motor, and a discharge lifting seat mounted on the piston rod of the discharge lifting cylinder. The buffer mechanism includes a buffer cylinder mounted on the base plate of the marking station seat via a second cylinder mounting plate and located between the discharge lifting cylinder and the clamping passive roller, and a buffer head mounted on the piston rod of the buffer cylinder. The sensing unit includes four sensors installed on a feeding track located at the rear, corresponding one-to-one with the middle of the feeding conveyor belt, the head of the marking station, the tail of the marking station, and the tail of the discharging conveyor belt. The controller is installed inside the chassis of the frame. The signal input terminal of the controller is connected to four sensors respectively, and the signal output terminal of the controller is connected to the inner ring laser marking machine, the outer ring laser marking machine, the information recognition camera, the feeding conveyor belt, the discharging conveyor belt, the positioning cylinder, the clamping drive motor, the discharging lifting cylinder and the buffer cylinder respectively.

[0010] The aforementioned automated marking device for the outer ring of the bearing includes, wherein the first lifting mechanism and the second lifting mechanism each include a lifting rail fixed on the chassis panel, a ball screw mechanism installed in the lifting rail, and a lifting drive motor installed on the top of the lifting rail and connected to the top end of the ball screw mechanism.

[0011] The aforementioned automated marking and engraving device for the outer ring of the bearing includes a feeding conveyor belt comprising a feeding belt drive roller spanning between the left end of the feeding front support and the left end of the feeding rear support, a feeding belt drive roller spanning between the right end of the feeding end support and the right end of the feeding rear support, a feeding belt wrapped between the feeding belt drive roller and the feeding belt drive roller, and a feeding drive motor connected to one end of the feeding belt drive roller.

[0012] The aforementioned automated marking and engraving device for the outer ring of the bearing includes a discharge conveyor belt comprising a discharge belt drive roller spanning between the left end of the discharge front support and the left end of the discharge rear support, a discharge belt drive roller spanning between the right end of the discharge front support and the right end of the discharge rear support, a discharge belt wrapped between the discharge belt drive roller and the discharge belt drive roller, and a discharge drive motor connected to one end of the discharge belt drive roller.

[0013] In the aforementioned automated marking and engraving device for the outer ring of the bearing, a feeding track is installed between the front feed support of the feeding conveyor belt and the front discharge support of the discharge conveyor belt, and between the rear feed support of the feeding conveyor belt and the rear discharge support of the discharge conveyor belt; each feeding track includes a track base plate, a track top plate, and multiple strings of guide bearing wheels connected between the track base plate and the track top plate.

[0014] The aforementioned automated marking and engraving device for the outer ring of the bearing includes a positioning support plate installed on the inner side of the front end plate of the marking station seat, a support top plate installed on the top surface of the front end plate, and two support rollers installed between the support bottom plate and the support top plate; the piston rod of the positioning cylinder is aligned between the two support rollers.

[0015] In the aforementioned automated marking and engraving device for the outer ring of the bearing, the plane of the discharge lifting seat is a horizontal U-shape; the buffer head is embedded inside the discharge lifting seat.

[0016] In the aforementioned automated marking device for the outer ring of the bearing, the top surface of the buffer head is covered with a rubber pad.

[0017] The features of the automated marking and engraving device for the bearing outer ring of the present invention are: 1. Full-process automation: It realizes unmanned operation from material loading to material unloading, significantly reducing labor costs and labor intensity.

[0018] 2. Accurate and reliable marking: Through "visual positioning + servo rotation" technology, the position of each QR code on the bearing ring is ensured to be accurate and consistent, clear and wear-resistant.

[0019] 3. Real-time information binding and traceability: The "identification-positioning-coding" closed-loop process is completed at the identification station, realizing the binding and association of the product's physical identity and digital identity, laying a solid foundation for building a full life cycle quality traceability system.

[0020] 4. Significantly improved production efficiency: Multiple workpieces can be continuously processed in an assembly line, and the marking and identification process is fast and accurate, resulting in an overall production cycle time that is much higher than that of traditional equipment.

[0021] 5. High adaptability and stability: The modular design allows the device to be easily adapted to bearing outer rings of different sizes through program adjustments; comprehensive sensor monitoring and PLC logic control effectively avoid malfunctions such as material jamming and material accumulation, ensuring stable and reliable operation. Attached Figure Description

[0022] Figure 1 This is a perspective view of the automated marking and engraving device for the bearing outer ring of the present invention; Figure 2 This is a perspective view of the housing in the automated marking and engraving device for the outer ring of the bearing of the present invention; Figure 3 This is a plan view of the automated marking and engraving device for the outer ring of the bearing of the present invention (excluding the inner ring laser marking machine, the inner ring laser marking machine and the information recognition device). Figure 4 This is a perspective view of all the mechanisms on the mechanism mounting box in the automated marking and engraving device for the bearing outer ring of the present invention; Figure 5 This is a perspective view of the infeed and discharge conveyor belts in the automated marking and engraving device for the outer ring of the bearing of the present invention; Figure 6 This is a perspective view of the positional relationship between the marking station seat and the positioning mechanism in the automated marking and engraving device for the outer ring of the bearing of the present invention. Figure 7 This is a perspective view of the positional relationship between the marking station and the clamping mechanism in the automated marking and engraving device for the outer ring of the bearing of the present invention. Figure 8This is a perspective view of the positional relationship between the marking station seat, the material discharge lifting mechanism and the buffer mechanism in the automated marking and engraving device for the bearing outer ring of the present invention. Figure 9 This is a front view of the positional relationship between the marking station seat, the discharge lifting mechanism, and the buffer mechanism in the automated marking and engraving device for the bearing outer ring of the present invention. Detailed Implementation

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Please see Figures 1 to 9 The automated marking device for the outer ring of a bearing of the present invention includes a frame 1, an inner ring laser marking machine 2A, an inner ring laser marking machine 2B, an information recognition device, a feeding conveyor belt 4A, a discharging conveyor belt 4B, two feeding tracks 5, a marking execution unit, a sensing unit, a controller, and a display 100.

[0025] The frame 1 includes a rectangular chassis 1A and a mechanism mounting box 1B. The chassis 1A houses a PLC controller, servo driver, power module, and related control circuits. The top of the chassis 1A is covered by a chassis panel 10, which serves as the main mechanical mounting platform. The mechanism mounting box 1B is fixed to the middle and rear of the chassis panel 10. A pair of feed conveyor belt fixing brackets 11 are installed on the left side of the bottom plate of the mechanism mounting box 1B, and a pair of discharge conveyor belt fixing brackets 12 are installed on the right side of the mechanism mounting box 1B. The middle of the mechanism mounting box 1B is a workstation marking area.

[0026] The inner ring laser marking machine 2A is installed in the front center of the chassis panel 10 through the first lifting mechanism 21. The inner ring laser marking machine 2A achieves precise up and down sliding through the first lifting mechanism to adapt to the marking focal length requirements of the outer ring of bearings of different sizes.

[0027] The outer ring laser marking machine 2B is installed in the front center of the chassis panel 10 and above the inner ring laser marking machine 2A via the second lifting mechanism 22. The outer ring laser marking machine 2B achieves precise up and down sliding through the second lifting mechanism to adapt to the marking focal length requirements of the outer ring of bearings of different sizes.

[0028] Both the first lifting mechanism 21 and the second lifting mechanism 22 include a lifting rail fixed on the chassis panel 10, a ball screw mechanism installed in the lifting rail, and a lifting drive motor installed on the top of the lifting rail and connected to the top end of the ball screw mechanism.

[0029] The information recognition device includes an information recognition camera 3 and a matching light source. The information recognition camera 3 is installed on the right side of the outer ring laser marking machine 2B and is located above the marking station.

[0030] The feeding conveyor belt 4A is installed between a pair of feeding conveyor belt fixing brackets 11 on the frame 1. The feeding conveyor belt 4A includes a front feeding bracket 41a, a rear feeding bracket 41b, a feeding belt drive roller 42a, a feeding belt drive roller 42b, a feeding belt 43, and a feeding drive motor 44. The front feeding bracket 41a and the rear feeding bracket 41b are fixed to the pair of feeding conveyor belt fixing brackets 11 in a one-to-one correspondence. The feeding belt drive roller 42a spans between the left end of the front feeding bracket 41a and the left end of the rear feeding bracket 41b. The feeding belt drive roller 42b spans between the right end of the front feeding bracket 41a and the right end of the rear feeding bracket 41b. The feeding belt wraps around the feeding belt drive roller 42a and the feeding belt drive roller 42b. The feeding drive motor 44 is connected to one end of the feeding belt drive roller 42a.

[0031] The discharge conveyor belt 4B is installed between a pair of discharge conveyor belt fixing brackets 12 on the frame 1 and is lower than the feed conveyor belt 4A. The discharge conveyor belt 4B includes a discharge front bracket 45a, a discharge rear bracket 45b, a discharge belt passive roller 46a, a discharge belt passive roller 46b, a discharge belt 47, and a discharge drive motor 48. The discharge front bracket 45a and the discharge rear bracket 45b are fixed to the pair of discharge conveyor belt fixing brackets 12 in a one-to-one correspondence. The discharge belt active roller 46a spans between the left end of the discharge front bracket 45a and the left end of the discharge rear bracket 45b. The discharge belt passive roller 46b spans between the right end of the discharge front bracket 45a and the right end of the discharge rear bracket 45b. The discharge belt 47 is wrapped between the discharge belt active roller 46a and the discharge belt passive roller 46b. The discharge drive motor 48 is connected to one end of the discharge belt active roller 46a.

[0032] Two feeding tracks 5 are symmetrically installed between the front feeding support 41a of the feeding conveyor belt 4A and the front discharging support 45a of the discharging conveyor belt 4B, as well as between the rear feeding support 41b of the feeding conveyor belt 4A and the rear discharging support 45b of the discharging conveyor belt 4B. Each feeding track 5 includes a track base plate 51, a track top plate 52, and multiple sets of guide bearing wheels 50 connected between the track base plate 51 and the track top plate 52. The two feeding tracks 5 are used to guide the workpiece 200 to enter and exit the marked station in an orderly manner.

[0033] The marking execution unit is installed at the marking station of the frame 1 and includes a marking station seat 60, a positioning mechanism 6, a clamping mechanism 7, a discharge lifting mechanism 8A, and a buffer mechanism 8B; wherein, The marking station seat 60 is installed on the marking station of the mechanism mounting box 1B and includes a front plate 601 installed between the front feeding conveyor belt limit bracket 11 and the left discharge conveyor belt limit bracket 12, a rear plate 602 installed between the rear feeding conveyor belt limit bracket 11 and the rear discharge conveyor belt limit bracket 12, and a base plate 600 connected between the bottom of the front plate 601 and the bottom of the rear plate 602.

[0034] The positioning mechanism 6 includes a positioning backrest 6A and a positioning cylinder 6B. The positioning backrest 6A includes a backrest base plate 61 installed on the upper middle part of the inner side of the front end plate 601 of the marking station seat 60, a backrest top plate 62 installed on the top surface of the front end plate 601, and two backrest rollers 63 installed between the backrest base plate 61 and the backrest top plate 62. The positioning cylinder 6B is installed laterally on the upper middle part of the rear end plate 602 of the marking station seat 60, opposite to the positioning backrest 6A. The piston rod of the positioning cylinder 6B is aligned between the two backrest rollers 63.

[0035] The clamping mechanism 7 includes a clamping drive motor 70 mounted on the lower left of the rear end plate 602 of the marking station 60, a clamping active roller 72 spanning between the upper left of the front end plate 601 and the upper left of the rear end plate 602 and connected to the clamping drive motor 70 via a first transmission belt 71, and a clamping passive roller 73 spanning between the upper right of the front end plate 601 and the upper right of the rear end plate 602 of the marking station 60 and connected to the clamping active roller 72 via a second transmission belt 74. The clamping mechanism 7 is used to clamp and drive the axially positioned workpiece to perform precise circumferential rotation.

[0036] The discharge lifting mechanism 8A includes a discharge lifting cylinder 82 mounted on the base plate 600 of the marking station seat 60 via a first cylinder mounting plate 81 and located to the right of the clamping drive motor 70, and a discharge lifting seat 83 mounted on the piston rod of the discharge lifting cylinder 82; the discharge lifting cylinder 82 is a three-axis cylinder; the plane of the discharge lifting seat 83 is a horizontal U-shape. The discharge lifting mechanism 8A is used to lift and transfer the workpiece that has completed the marking process to the discharge conveyor belt 4B.

[0037] The buffer mechanism 8B includes a buffer cylinder 85 mounted on the base plate 600 of the marking station seat 60 via a second cylinder mounting plate 84 and located between the discharge lifting cylinder 82 and the clamping passive roller 73, and a buffer head 86 mounted on the piston rod of the buffer cylinder 85. The buffer cylinder 85 is a slide cylinder. The buffer head 86 is located inside the discharge lifting seat 83. The top surface of the buffer head 86 is covered with a rubber pad. The piston rod of the buffer cylinder 85 is in the extended state under normal conditions to decelerate and buffer the workpiece arriving at the marking station to prevent impact.

[0038] The sensing unit includes four sensors 9 mounted on a feed track 5 located at the rear, corresponding to the middle of the feed conveyor belt 4A, the left end of the marking station, the right end of the marking station, and the tail of the discharge conveyor belt 4B, for detecting the position and status of the workpiece.

[0039] The controller is installed inside the chassis 1A of the frame 1. Its signal input terminals are connected to four sensors 9, and its signal output terminals are connected to the inner ring laser marking machine 2A, the outer ring laser marking machine 2B, the information recognition camera 3, the feeding conveyor belt 4A, the discharging conveyor belt 4B, the positioning cylinder 6B, the clamping drive motor 70, the discharging lifting cylinder 82, and the buffer cylinder 85. The controller uses a standard PLC variable programmable controller and receives signals from all sensors. It controls the coordinated operation of all actuators, including the inner ring laser marking machine 2A, the outer ring laser marking machine 2B, the information recognition camera 3, the feeding conveyor belt 4A, the discharging conveyor belt 4B, the positioning cylinder 6B, the clamping drive motor 70, the discharging lifting cylinder 82, and the buffer cylinder 85, according to a preset logic program.

[0040] The display 100 is mounted on the lifting rail of the first lifting mechanism 21 via a bracket. The display 100 is connected to the controller and is equipped with a touchscreen. It displays in real time the content identified by the information recognition camera 3, the engraving status of the inner ring laser marking machine 2A and the outer ring laser marking machine 2B, equipment operating parameters, and alarm information. The system automatically stores key process data (such as product serial number, engraving time, and recognition results) and can upload it to the MES system via an interface for quality traceability and production management.

[0041] The automated marking and engraving device for the bearing outer ring of the present invention includes the following steps during use: S1. Manual or robotic arm places the outer ring of the bearing (workpiece) into the feeding conveyor belt 4A from the left end of the frame 1. The feeding conveyor belt 4A sends the workpiece to the marked station and places it on the buffer head 86 where the piston rod of the buffer cylinder 85 is extended. Then the piston rod of the buffer cylinder 85 retracts, so that the workpiece falls on the discharge lifting seat 83. S2. After the controller receives information from the sensor located at the left end of the marking station that the workpiece has entered the marking station, it controls the feeding conveyor belt 4A to stop running to ensure that there is only one workpiece at the marking station. At the same time, it controls the piston rod of the positioning cylinder 6B of the positioning mechanism 6 to extend and abut against the large stop edge of the workpiece 200 to push the workpiece towards the positioning backing 6A, so as to fix the workpiece axially between the positioning cylinder 6B and the positioning backing 6A. S3. The clamping drive motor 70 of the clamping mechanism 7 starts, and drives the workpiece to rotate clockwise through the clamping active roller 72 and the clamping passive roller 73. The information recognition camera 3 above the mark scans the outer surface ring of the rotating workpiece, captures the character code or DM code engraved on the outer surface ring of the workpiece, and then the controller decodes and identifies the position of the engraved character code or DM code as the reference position for subsequent laser marking. The controller then controls the clamping mechanism 7 to drive the workpiece 200 to rotate to a specific angle and stop. S4. After the workpiece comes to rest, the controller identifies the reference position collected by the camera 3 based on the information. It first controls the first lifting mechanism 21 and the second lifting mechanism 22 to adjust the height of the inner ring laser marking machine 2A and the outer ring laser marking machine 2B in a one-to-one correspondence. Then, it controls the inner ring laser marking machine 2A and the outer ring laser marking machine 2B to simultaneously engrave QR codes on the inner and outer rings at the reference position of the workpiece in a one-to-one correspondence. After the inner ring laser marking machine 2A and the outer ring laser marking machine 2B complete the marking, the clamping drive motor 70 of the clamping mechanism 7 rotates in the opposite direction. At the same time, the piston rod of the discharge lifting cylinder 82 of the discharge lifting mechanism 8A extends, pushing the workpiece into the discharge conveyor belt 4B through the discharge lifting seat 83. The discharge conveyor belt 4B then delivers the workpiece to the right end of the frame 1. After the sensor at the right end of the marking station detects the workpiece leaving, the controller controls each mechanism to reset and starts the next cycle. The sensor at the tail of the discharge conveyor belt 4B detects the workpiece passing status and feeds it back to the controller, monitoring the completion of the workpiece process and controlling the orderly discharge process to prevent material accumulation on the discharge conveyor belt 4B.

[0042] The above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions should also fall within the scope of the invention and should be defined by the claims.

Claims

1. An automated marking and engraving device for the outer ring of a bearing, comprising a frame, an inner ring laser marking machine, an outer ring laser marking machine, an information recognition device, an infeed conveyor belt, an outfeed conveyor belt, a marking execution unit, a sensing unit, and a controller, characterized in that, The frame includes a rectangular chassis and a mechanism mounting box; the top of the chassis is covered with a chassis panel; the mechanism mounting box is fixed to the middle and rear part of the chassis panel, a pair of feed conveyor belt fixing brackets are installed on the left side of the bottom plate of the mechanism mounting box, and a pair of discharge conveyor belt fixing brackets are installed on the right side of the mechanism mounting box; the middle part of the mechanism mounting box is a workstation for identification. The inner ring laser marking machine is installed in the front center of the chassis panel via a first lifting mechanism; the outer ring laser marking machine is installed in the front center of the chassis panel via a second lifting mechanism and is located above the inner ring laser marking machine. The information recognition device includes an information recognition camera and a matching light source; the information recognition camera is installed on the right side of the outer ring laser marking machine and located above the marking station; The feed conveyor belt is installed between a pair of feed conveyor belt fixing brackets on the frame; The discharge conveyor belt is installed between a pair of discharge conveyor belt fixing brackets on the frame and is lower than the feed conveyor belt; The marking execution unit is installed at the marking station of the frame and includes a marking station seat, a positioning mechanism, a clamping mechanism, a discharge lifting mechanism, and a buffer mechanism; wherein, The marking station seat is installed on the marking station of the mechanism mounting box and includes a front end plate installed between the front feeding conveyor belt limit bracket and the left discharging conveyor belt limit bracket, a rear end plate installed between the rear feeding conveyor belt limit bracket and the rear discharging conveyor belt limit bracket, and a bottom plate connected between the bottom of the front end plate and the bottom of the rear end plate. The positioning mechanism includes a positioning backrest and a positioning cylinder; the positioning backrest is installed on the upper middle part of the inner side of the front end plate of the marking workstation; the positioning cylinder is installed laterally on the upper middle part of the rear end plate of the marking workstation, opposite to the positioning backrest. The clamping mechanism includes a clamping drive motor installed on the lower left of the rear end plate of the marking station, a clamping active roller connected to the clamping drive motor via a first transmission belt between the upper left of the front end plate and the upper left of the rear end plate, and a clamping passive roller connected to the clamping active roller via a second transmission belt between the upper right of the front end plate and the upper right of the rear end plate of the marking station. The discharge lifting mechanism includes a discharge lifting cylinder mounted on the base plate of the marking workstation seat via a first cylinder mounting plate and located to the right of the clamping drive motor, and a discharge lifting seat mounted on the piston rod of the discharge lifting cylinder. The buffer mechanism includes a buffer cylinder mounted on the base plate of the marking station seat via a second cylinder mounting plate and located between the discharge lifting cylinder and the clamping passive roller, and a buffer head mounted on the piston rod of the buffer cylinder. The sensing unit includes four sensors installed on a feeding track located at the rear, corresponding one-to-one with the middle of the feeding conveyor belt, the head of the marking station, the tail of the marking station, and the tail of the discharging conveyor belt. The controller is installed inside the chassis of the frame. The signal input terminal of the controller is connected to four sensors respectively, and the signal output terminal of the controller is connected to the inner ring laser marking machine, the outer ring laser marking machine, the information recognition camera, the feeding conveyor belt, the discharging conveyor belt, the positioning cylinder, the clamping drive motor, the discharging lifting cylinder and the buffer cylinder respectively.

2. The automated marking and engraving device for the outer ring of a bearing according to claim 1, characterized in that, Both the first lifting mechanism and the second lifting mechanism include a lifting rail fixed on the chassis panel, a ball screw mechanism installed in the lifting rail, and a lifting drive motor installed on the top of the lifting rail and connected to the top end of the ball screw mechanism.

3. The automated marking and engraving device for the outer ring of a bearing according to claim 1, characterized in that, The feeding conveyor belt includes a feeding belt drive roller spanning between the left end of the feeding front support and the left end of the feeding rear support, a feeding belt drive roller spanning between the right end of the feeding end support and the right end of the feeding rear support, a feeding belt wrapped between the feeding belt drive roller and the feeding belt drive roller, and a feeding drive motor connected to one end of the feeding belt drive roller.

4. The automated marking and engraving device for the outer ring of a bearing according to claim 1, characterized in that, The discharge conveyor belt includes a discharge belt drive roller spanning between the left end of the discharge front support and the left end of the discharge rear support, a discharge belt drive roller spanning between the right end of the discharge front support and the right end of the discharge rear support, a discharge belt wrapped between the discharge belt drive roller and the discharge belt drive roller, and a discharge drive motor connected to one end of the discharge belt drive roller.

5. The automated marking and engraving device for the outer ring of a bearing according to claim 1, characterized in that, A feeding track is installed between the front feeding support of the feeding conveyor belt and the front discharging support of the discharging conveyor belt, and between the rear feeding support of the feeding conveyor belt and the rear discharging support of the discharging conveyor belt. Each feeding track includes a track base plate, a track top plate, and multiple sets of guide bearing wheels connected between the track base plate and the track top plate.

6. The automated marking and engraving device for the outer ring of a bearing according to claim 1, characterized in that, The positioning support includes a base plate installed on the inner side of the front end plate of the identification workstation, a top plate installed on the top surface of the front end plate, and two support rollers installed between the base plate and the top plate; the piston rod of the positioning cylinder is aligned between the two support rollers.

7. The automated marking and engraving device for the outer ring of a bearing according to claim 1, characterized in that, The plane of the discharge lifting seat is a horizontal U-shape; the buffer head is embedded inside the discharge lifting seat.

8. The automated marking and engraving device for the outer ring of a bearing according to claim 1 or 7, characterized in that, The top surface of the buffer head is covered with a rubber pad.

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