Automatic bushing conveying and angle positioning equipment for engine connecting rod bushing pressing

Abstract

The present invention belongs to the technical field of auxiliary installation of engine parts, and specifically relates to an automatic conveying and angle positioning device for bushings used in the press-fitting of engine connecting rod bushings, including a feeding conveying mechanism, a grasping and translating mechanism, an angle positioning mechanism, a transfer mechanism, and a press-fitting mechanism; the grasping and translating mechanism is used to grasp and translate the bushing at the discharge port of the feeding conveying mechanism to the angle positioning mechanism, the angle positioning mechanism is used to position the bushing to the press-fitting angle, the transfer mechanism transfers the bushing with the angle positioned to the press-fitting mechanism, and the press-fitting mechanism presses the bushing into the connecting rod. The whole process of the present invention realizes automatic operation from feeding, angle positioning to press-fitting, and realizes the automatic and accurate identification of the joint angle of the engine connecting rod bushing.

Description

Technical Field

[0001] The present invention belongs to the technical field of auxiliary installation of engine parts, and particularly relates to an automatic conveying and angle positioning device for a bushing used in press-fitting an engine connecting rod bushing. Background Art

[0002] In the field of engine manufacturing, the connecting rod is a particularly important main functional component. In the production process of most connecting rods, bushings need to be press-fitted, and this process is a key process. Currently, on many engine production lines, the press-fitting of connecting rod bushings (usually copper bushings) mostly still adopts a manual operation method. This traditional manual press-fitting method has many drawbacks:

[0003] First of all, the efficiency of manual press-fitting is extremely low. Workers need to pick up the connecting rod copper bushings one by one and use a simple mechanical positioning and oil cylinder method to press them into the engine connecting rod at a specific joint angle. In this process, workers need to continuously repeat actions such as picking up, identifying the angle, and press-fitting. Each action takes a certain amount of time, resulting in difficulty in improving the overall production efficiency and inability to meet the increasing engine production demand.

[0004] Secondly, the quality stability of manual press-fitting is poor. Due to the inevitable influence of factors such as individual differences and fatigue levels of workers in manual operations, it is difficult to keep the effects, angles, etc. of each press-fitting exactly the same. This easily leads to deviations in the installation position of the connecting rod copper bushing in the engine connecting rod, thereby affecting the overall performance and reliability of the engine. For example, if the joint angle of the copper bushing is not accurately installed, during the operation of the engine, the friction force distribution between the connecting rod and the copper bushing is uneven, which may accelerate the wear of the copper bushing and shorten the service life of the engine. At the same time, due to the inaccurate angle, the position of the bushing oil groove is not good, resulting in insufficient lubricating oil entering the middle of the piston and the small end hole of the connecting rod during the operation of the engine, leading to poor lubrication and a decline in engine performance.

[0005] Furthermore, manual press-fitting has relatively high requirements for workers' skills. Workers need to undergo long-term training to proficiently master skills such as accurately identifying the joint angle of the connecting rod copper bushing and appropriate press-fitting force and angle. This not only increases the training cost of the enterprise, but also once a skilled worker leaves, new workers need to be retrained, which has an adverse impact on the stable operation of the production line.

[0006] In addition, from the perspective of work safety, during the manual press-fitting process, workers repeat the same single action for a long time, which easily leads to fatigue, increases the risk of operation errors, and may further trigger safety accidents, posing a threat to the personal safety of workers. In terms of personnel costs, since the production line adopts a three-shift work system, if the manual press-fitting method is used, an additional person needs to be added to each shift to specifically be responsible for the press-fitting of the connecting rod copper bush. This undoubtedly brings a greater economic burden to the enterprise, further highlighting the disadvantages of the manual press-fitting method in cost control.

[0007] Finally, it is worth noting that the product drawing has strict requirements for the press-fitting angle of the copper bush, and the allowable error range is only ±3 degrees. However, it is simply impossible for the human eye to accurately identify whether the copper bush is press-fitted within this angle range, which results in a large number of cases where the press-fitting angle is incorrect but not discovered, greatly increasing the quality risk of the product. Once these products with angle deviations flow into the market, it may cause the engine to malfunction, affect the enterprise's reputation, and trigger a series of serious consequences such as a substantial increase in after-sales costs.

[0008] In summary, the existing manual press-fitting method has been difficult to meet the requirements of modern engine manufacturing for high efficiency, high quality, stable production, and cost control. There is an urgent need for a mechanism that can automatically transport the engine connecting rod copper bush and accurately identify the angle for press-fitting to improve production efficiency, ensure product quality, reduce labor intensity, safety risks, and personnel costs. Summary of the Invention

[0009] To solve the many problems existing in the prior art of manually press-fitting engine connecting rod bushings, such as low efficiency, poor quality stability, high personnel costs, high requirements for workers' skills, and difficulty in accurately controlling the press-fitting angle of the copper bush, the present invention provides a bushing automatic conveying and angle positioning device for press-fitting engine connecting rod bushings.

[0010] The present invention is implemented as follows. There is provided a bushing automatic conveying and angle positioning device for press-fitting engine connecting rod bushings, including a feeding conveying mechanism, a grasping and translating mechanism, an angle positioning mechanism, a transfer mechanism, and a press-fitting mechanism; the grasping and translating mechanism is used to grasp and translate the bushing at the discharge port of the feeding conveying mechanism onto the angle positioning mechanism, the angle positioning mechanism is used to position the bushing to the press-fitting angle, the transfer mechanism transfers the bushing with the angle positioned to the press-fitting mechanism, and the press-fitting mechanism presses the bushing into the connecting rod.

[0011] The angle positioning mechanism includes a rotation mechanism and an angle recognition mechanism. The rotation mechanism includes a rotation mounting bracket, a rotation driving mechanism, and a rotation fixture. The rotation driving mechanism is arranged below the rotation mounting bracket, and the output end of the rotation driving mechanism passes through the rotation mounting bracket and is connected to the rotation fixture. The grasping and translation mechanism grasps, translates, and sleevs a bushing onto the rotation fixture; The angle recognition mechanism includes an angle recognition bracket, a first linear driving mechanism, an angle recognition sensor mounting seat, and an angle recognition sensor. The first linear driving mechanism is arranged on the angle recognition bracket, the angle recognition sensor mounting seat is arranged on the first linear driving mechanism. There are two angle recognition sensors, which are arranged vertically on the angle recognition sensor mounting seat. The first linear driving mechanism drives the two angle recognition sensors to approach or move away from the bushing on the rotation fixture through the angle recognition sensor mounting seat, so as to identify the notch position on the upper or lower side of the bushing.

[0012] Preferably, the feeding and conveying mechanism includes a storage bin, a vibration mechanism, and a linear conveying channel. The vibration mechanism is arranged on the bin support, and vibration mechanisms are arranged below both the storage bin and the linear conveying channel. The inner wall of the storage bin is a spiral feeding structure, and the outlet of the spiral feeding structure is connected to the linear conveying channel. The outlet of the linear conveying channel is located below the grasping and translation mechanism; A receiving tray with an inclined bottom wall is arranged in the storage bin. One side of the opening of the receiving tray is connected to a receiving tray support plate, and the lower end of the receiving tray support plate is also inclined and close to the bottom wall of the storage bin.

[0013] Preferably, the grasping and translation mechanism includes a grasping and translation bracket, a second linear driving mechanism, a grasping and translation cylinder, and a grasping and translation jaw. The second linear driving mechanism is arranged on the grasping and translation bracket, the grasping and translation cylinder is connected to the second linear driving mechanism, the grasping and translation jaw is arranged at the lower end of the grasping and translation cylinder, and translation limit blocks are arranged at both ends of the second linear driving mechanism.

[0014] Preferably, the transfer mechanism includes a transfer bracket, a transfer cylinder, a connecting arm, and a transfer jaw. The transfer cylinder is arranged on the transfer bracket, one end of the connecting arm is connected to the transfer cylinder, and the other end is connected to the transfer jaw.

[0015] Further preferably, after the transfer jaw rotates 180° from above the rotation fixture through the transfer cylinder, it is exactly located above the pressing mechanism.

[0016] Preferably, the rotation fixture is provided with a laterally open slot for installing a swelling block, and a swelling spring is connected between the inner wall of the slot and the swelling block. When the bushing is not sleeved, the swelling block slightly protrudes from the lateral opening of the slot, and the upper outer edges of the rotation fixture and the swelling block are both inclined surfaces.

[0017] Preferably, the rotation driving mechanism includes a rotation driving motor and a coupling. The rotation driving motor is connected to the coupling above, and the output end of the coupling passes through the rotation mounting bracket and is connected to the rotation connection disk. The rotation jig is arranged above the rotation connection disk.

[0018] Preferably, the angle recognition sensor mounting seat includes an angle recognition sensor fixed seat and an angle recognition sensor movable seat. The angle recognition sensor fixed seat is connected to the first linear driving mechanism. There is a laterally open slot for mounting the angle recognition sensor movable seat on the angle recognition sensor fixed seat, and the inner wall of the slot is connected to the angle recognition sensor movable seat through a buffer spring.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] The present invention provides an automatic feeding and angle positioning device for engine connecting rod bush pressing. The whole process realizes automatic operation from feeding, angle positioning to pressing, realizes automatic and accurate recognition of the seam angle of the engine connecting rod bush, and automatically and precisely presses it into the engine connecting rod at the correct seam angle, replacing the existing manual pressing method, thereby improving production efficiency, enhancing the quality stability of products, reducing labor costs and quality risks caused by manual operation. At the same time, it reduces the dependence on the professional skills of workers, enabling the production line to operate more stably and efficiently. Description of the Drawings

[0021] Figure 1 It is the overall structure diagram of the automatic feeding and angle positioning device for engine connecting rod bush pressing provided by the present invention;

[0022] Figure 2 It is the overall position relationship diagram of the grasping and translation mechanism, the angle positioning mechanism and the transfer mechanism;

[0023] Figure 3 It is the overall position relationship diagram of the rotation mechanism, the angle recognition mechanism and the transfer mechanism;

[0024] Figure 4 It is the overall structure schematic diagram of the rotation mechanism;

[0025] Figure 5 It is the overall structure schematic diagram of the angle recognition mechanism;

[0026] Figure 6 It is the overall structure schematic diagram of the feeding conveyor mechanism;

[0027] Figure 7 It is the structure diagram of the receiving tray;

[0028] Figure 8 It is the structure diagram of the receiving tray support plate;

[0029] Figure 9 Schematic diagram of the overall structure of the grasping and translation mechanism;

[0030] Figure 10 Schematic diagram of the overall structure of the transfer mechanism;

[0031] Figure 11 Structural diagram of the rotating fixture;

[0032] Figure 12 Structural diagram of the expansion block;

[0033] In the figure: 1 - feeding conveyor mechanism; 2 - grasping and translation mechanism; 3 - angle positioning mechanism; 4 - transfer mechanism; 5 - movable seat of angle recognition sensor; 6 - rotating mechanism; 7 - angle recognition mechanism; 8 - rotating mounting bracket; 9 - rotating drive mechanism; 10 - rotating fixture; 11 - angle recognition bracket; 12 - first linear drive mechanism; 13 - mounting seat of angle recognition sensor; 14 - angle recognition sensor; 15 - storage bin; 16 - vibration mechanism; 17 - linear conveying channel; 18 - bin bracket; 19 - receiving tray; 20 - receiving tray support plate; 21 - grasping and translation bracket; 22 - second linear drive mechanism; 23 - grasping and translation cylinder; 24 - grasping and translation jaw; 25 - translation limit block; 26 - transfer bracket; 27 - transfer cylinder; 28 - connecting arm; 29 - transfer jaw; 30 - mounting expansion block; 31 - drive motor; 32 - coupling; 33 - rotating connection disc; 34 - fixing seat of angle recognition sensor. Detailed implementation manners

[0034] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] Refer to Figures 1 - 12 , the present invention provides a bushing automatic conveying and angle positioning device for engine connecting rod bushing pressing, including a feeding conveyor mechanism 1, a grasping and translation mechanism 2, an angle positioning mechanism 3, a transfer mechanism 4 and a pressing mechanism; the grasping and translation mechanism 2 is used to grasp and translate the bushing at the discharge port of the feeding conveyor mechanism 1 to the angle positioning mechanism 3, the angle positioning mechanism 3 is used to position the bushing to the pressing angle, the transfer mechanism 4 transfers the bushing with the angle positioned to the pressing mechanism, and the pressing mechanism presses the bushing into the connecting rod.

[0036] The angle positioning mechanism 3 includes a rotation mechanism 6 and an angle recognition mechanism 7. The rotation mechanism 6 includes a rotation mounting bracket 8, a rotation driving mechanism 9, and a rotation fixture 10. The rotation driving mechanism 9 is arranged below the rotation mounting bracket 8, and the output end of the rotation driving mechanism 9 passes through the rotation mounting bracket 8 and is connected to the rotation fixture 10. The grasping and translation mechanism 2 grasps, translates, and sleevs the bushing onto the rotation fixture 10. The angle recognition mechanism 7 includes an angle recognition bracket 11, a first linear driving mechanism 12, an angle recognition sensor mounting seat 13, and an angle recognition sensor 14. The first linear driving mechanism 12 is arranged on the angle recognition bracket 11, the angle recognition sensor mounting seat 13 is arranged on the first linear driving mechanism 12. There are two angle recognition sensors 14, which are arranged vertically on the angle recognition sensor mounting seat 13. The first linear driving mechanism 12 drives the two angle recognition sensors 14 to approach or move away from the bushing on the rotation fixture 10 through the angle recognition sensor mounting seat 13, so as to identify the position of the notch on the upper or lower side of the bushing.

[0037] During the working process of this equipment, the feeding and conveying mechanism 1 successively sends the bushings to the discharge port. The grasping and translation mechanism 2 grasps and translates the bushing to the rotation fixture 10 of the rotation mechanism 6. At this time, the first linear driving mechanism 12 drives the angle recognition sensor mounting seat 13 to approach the bushing on the rotation fixture 10. After approaching the distance where the notch on the bushing can be recognized, the rotation driving mechanism 9 drives the rotation fixture 10 to rotate, and the rotation fixture 10 drives the bushing to rotate. Since there is only one notch on the bushing, the position of this notch may be on the upper side or the lower side. Therefore, the notch on the bushing can be recognized by the two angle recognition sensors 14. After the notch is recognized, the rotation driving mechanism 9 controls the rotation fixture 10 to stop rotating, and the bushing is positioned. The grasping and translation mechanism 2 then lifts the bushing from the rotation fixture 10, and the transfer mechanism 4 takes over the bushing and transfers it to the pressing mechanism for pressing with the connecting rod.

[0038] As a specific implementation manner of the feeding and conveying mechanism 1, the feeding and conveying mechanism 1 includes a storage bin 15, a vibration mechanism 16, and a linear conveying channel 17. The vibration mechanism 16 is arranged on a bin support 18, and vibration mechanisms 16 are arranged below both the storage bin 15 and the linear conveying channel 17. The inner wall of the storage bin 15 is a spiral feeding structure, and the outlet of the spiral feeding structure is connected to the linear conveying channel 17. The discharge port of the linear conveying channel 17 is located below the grasping and translation mechanism 2. A receiving tray 19 with an inclined bottom wall is arranged in the storage bin 15. One side of the opening of the receiving tray 19 is connected with a receiving tray support plate 20, and the lower end of the receiving tray support plate 20 is also inclined and close to the bottom wall of the storage bin 15.

[0039] During the feeding process, the operator pours the bushings into the receiving tray 19. The bushings slide along the inclined bottom wall of the receiving tray 19, then onto the inclined bottom wall of the receiving tray support plate 20, and finally onto the bottom wall of the storage bin 15. At this time, under the vibration of the vibration mechanism 16, the bushings spiral upward along the spiral feeding structure of the storage bin 15 until they reach the linear conveying channel 17. The vibration mechanism 16 under the linear conveying channel 17 generates slight vibrations, and by adjusting the frequency and amplitude, the bushings move forward on the linear conveying channel 17.

[0040] As a specific implementation of the grasping and translation mechanism 2, the grasping and translation mechanism 2 includes a grasping and translation support 21, a second linear driving mechanism 22, a grasping and translation cylinder 23, and a grasping and translation jaw 24. The second linear driving mechanism 22 is arranged on the grasping and translation support 21. The grasping and translation cylinder 23 is connected to the second linear driving mechanism 22. The grasping and translation jaw 24 is arranged at the lower end of the grasping and translation cylinder 23. Translation limit blocks 25 are provided at both ends of the second linear driving mechanism 22.

[0041] During the process of grasping and translating the bushings, first, the grasping and translation cylinder 23 is located above the discharge port of the linear conveying channel 17. The grasping and translation jaw 24 is controlled to grasp the bushings at the discharge port downward. After grasping, it rises. Then, under the drive of the second linear driving mechanism 22, it translates to the other end of the second linear driving mechanism 22. The grasping and translation cylinder 23 controls the grasping and translation jaw 24 to move downward and place the bushings on the rotating fixture 10.

[0042] As a specific implementation of the transfer mechanism 4, the transfer mechanism 4 includes a transfer support 26, a transfer cylinder 27, a connecting arm 28, and a transfer jaw 29. The transfer cylinder 27 is arranged on the transfer support 26. One end of the connecting arm 28 is connected to the transfer cylinder 27, and the other end is connected to the transfer jaw 29.

[0043] During the process of transferring the bushings with the angle positioned, the grasping and translation cylinder 23 controls the grasping and translation jaw 24 to move downward, clamp the upper part of the bushings to lift them. The transfer cylinder 27 extends forward, clamps the lower part of the bushings, rotates a certain angle, and then places the bushings on the pressing mechanism for pressing.

[0044] Preferably, the transfer jaw 29 rotates 180° from above the rotating fixture 10 through the transfer cylinder 27 and is exactly located above the pressing mechanism.

[0045] In order to drive the bushing to rotate together during the rotation of the rotating jig 10, as an improvement of the technical solution, a laterally open slot for installing the expansion block 30 is provided on the rotating jig 10. The inner wall of the slot is connected to the expansion block 30 through an expansion spring. When the bushing is not sleeved, the expansion block 30 slightly protrudes from the lateral opening of the slot, and the upper outer edges of the rotating jig 10 and the expansion block 30 are both provided with inclined surfaces.

[0046] When the grasping and translating mechanism 2 places the bushing on the rotating jig 10, the inner wall of the bushing pushes the expansion block 30 along the inclined surfaces of the upper outer edges of the rotating jig 10 and the expansion block 30 towards the inside of the slot on the rotating jig 10, compressing the expansion spring until the bushing is completely inserted onto the rotating jig 10. Under the action of the expansion spring, the expansion block 30 can be tightened and rotate together with the rotating jig 10.

[0047] As a specific implementation manner of the rotation driving mechanism 9, the rotation driving mechanism 9 includes a rotation driving motor 31 and a coupling 32. The coupling 32 is connected above the rotation driving motor 31. The output end of the coupling 32 passes through the rotation mounting bracket 8 and is connected to a rotation connection disk 33. The rotating jig 10 is arranged above the rotation connection disk 33.

[0048] In order to prevent the angle recognition sensor mounting seat 13 from being too close to the bushing during the movement process and damaging the sensor, as an improvement of the technical solution, the angle recognition sensor mounting seat 13 includes an angle recognition sensor fixed seat 34 and an angle recognition sensor movable seat 5. The angle recognition sensor fixed seat 34 is connected to the first linear driving mechanism 12. A laterally open slot for installing the angle recognition sensor movable seat 5 is provided on the angle recognition sensor fixed seat 34. The inner wall of the slot is connected to the angle recognition sensor movable seat 5 through a buffer spring.

[0049] Once the sensor on the angle recognition sensor movable seat 5 touches the bushing, if the distance is not well controlled and it continues to move forward, at this time, the angle recognition sensor movable seat 5 compresses the buffer spring, and the angle recognition sensor movable seat 5 moves towards the direction of the inner slot of the angle recognition sensor fixed seat 34 to prevent damage to the sensor.

[0050] In this specification, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An automatic bushing conveying and angle positioning device for engine connecting rod bush pressing, characterized in that It includes a feeding and conveying mechanism (1), a grasping and translating mechanism (2), an angle positioning mechanism (3), a transfer mechanism (4) and a pressing mechanism; the grasping and translating mechanism (2) is used to grasp and translate the bushing at the discharge port of the feeding and conveying mechanism (1) onto the angle positioning mechanism (3), the angle positioning mechanism (3) is used to position the bushing to the pressing angle, the transfer mechanism (4) transfers the bushing with the angle positioned to the pressing mechanism, and the pressing mechanism presses the bushing into the connecting rod. The angle positioning mechanism (3) includes a rotating mechanism (6) and an angle recognition mechanism (7). The rotating mechanism (6) includes a rotating mounting bracket (8), a rotating drive mechanism (9), and a rotating fixture (10). The rotating drive mechanism (9) is arranged below the rotating mounting bracket (8), and the output end of the rotating drive mechanism (9) passes through the rotating mounting bracket (8) and is connected to the rotating fixture (10). The grasping and translating mechanism (2) grasps, translates and sleeves the bushing onto the rotating fixture (10); the angle recognition mechanism (7) includes an angle recognition bracket (11), a first linear drive mechanism (12), an angle recognition sensor mounting seat (13) and an angle recognition sensor (14). The first linear drive mechanism (12) is arranged on the angle recognition bracket (11), the angle recognition sensor mounting seat (13) is arranged on the first linear drive mechanism (12), there are two angle recognition sensors (14), which are arranged vertically and distributed on the angle recognition sensor mounting seat (13). The first linear drive mechanism (12) drives the two angle recognition sensors (14) to approach or move away from the bushing on the rotating fixture (10) through the angle recognition sensor mounting seat (13) to identify the position of the notch on the upper or lower side of the bushing.

2. The bushing automatic conveying and angle positioning device for engine connecting rod bushing pressing according to claim 1, characterized in that, The feeding and conveying mechanism (1) includes a storage bin (15), a vibration mechanism (16) and a linear conveying channel (17). The vibration mechanism (16) is arranged on a bin support (18), and vibration mechanisms (16) are arranged below both the storage bin (15) and the linear conveying channel (17). The inner wall of the storage bin (15) is a spiral feeding structure, and the outlet of the spiral feeding structure is connected to the linear conveying channel (17). The discharge port of the linear conveying channel (17) is located below the grasping and translating mechanism (2); a receiving tray (19) with an inclined bottom wall is arranged in the storage bin (15), one side of the opening of the receiving tray (19) is connected with a receiving tray support plate (20), and the lower end of the receiving tray support plate (20) is also inclined and close to the bottom wall of the storage bin (15).

3. The bushing automatic conveying and angle positioning device for engine connecting rod bushing pressing according to claim 1, wherein The grasping and translating mechanism (2) includes a grasping and translating bracket (21), a second linear drive mechanism (22), a grasping and translating cylinder (23) and a grasping and translating jaw (24). The second linear drive mechanism (22) is arranged on the grasping and translating bracket (21), the grasping and translating cylinder (23) is connected to the second linear drive mechanism (22), the grasping and translating jaw (24) is arranged at the lower end of the grasping and translating cylinder (23), and translation limit blocks (25) are arranged at both ends of the second linear drive mechanism (22).

4. The bushing automatic conveying and angle positioning device for engine connecting rod bushing pressing according to claim 1, characterized in that, The transfer mechanism (4) includes a transfer bracket (26), a transfer cylinder (27), a connecting arm (28) and transfer jaws (29). The transfer cylinder (27) is arranged on the transfer bracket (26). One end of the connecting arm (28) is connected to the transfer cylinder (27), and the other end is connected to the transfer jaws (29).

5. The bushing automatic conveying and angle positioning device for engine connecting rod bushing pressing according to claim 4, characterized in that, After the transfer jaws (29) are rotated 180° from above the rotating jig (10) by the transfer cylinder (27), they are exactly located above the press-fitting mechanism.

6. The bushing automatic conveying and angle positioning device for engine connecting rod bushing pressing according to claim 1, characterized in that, The rotating jig (10) is provided with a laterally open groove for installing the expansion block (30). The inner wall of the groove is connected to the expansion block (30) through an expansion spring. When the bushing is not sleeved, the expansion block (30) slightly protrudes from the lateral opening of the groove, and the upper outer edges of the rotating jig (10) and the expansion block (30) are both inclined surfaces.

7. The bushing automatic conveying and angle positioning device for engine connecting rod bushing pressing according to claim 1, characterized in that, The rotation driving mechanism (9) includes a rotation driving motor (31) and a coupling (32). The rotation driving motor (31) is connected to the coupling (32) above. The output end of the coupling (32) passes through the rotation mounting bracket (8) and is connected to the rotation connection disc (33). The rotating jig (10) is arranged above the rotation connection disc (33).

8. The bushing automatic conveying and angle positioning device for engine connecting rod bushing pressing according to claim 1, characterized in that, The angle recognition sensor mounting seat (13) includes an angle recognition sensor fixed seat (34) and an angle recognition sensor movable seat (5). The angle recognition sensor fixed seat (34) is connected to the first linear driving mechanism (12). The angle recognition sensor fixed seat (34) is provided with a laterally open groove for installing the angle recognition sensor movable seat (5). The inner wall of the groove is connected to the angle recognition sensor movable seat (5) through a buffer spring.

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