Efficient automatic needle bearing assembling machine

Abstract

The invention relates to the technical field of bearings, in particular to an efficient and automatic needle bearing assembling machine which comprises a bearing mechanism, two movable lifting mechanisms, an inner ring positioning mechanism, an outer ring positioning and clamping mechanism and a needle assembling mechanism. Wherein one movable lifting mechanism is provided with a stamping mechanism, a needle taking mechanism which is in butt joint with the needle installing mechanism to take needles is arranged below the movable lifting mechanism, an inner ring grabbing mechanism is arranged below the other movable lifting mechanism, and the elastic thrust mechanism is arranged below the outer ring positioning and clamping mechanism. A retaining mechanism is arranged on the outer ring positioning and clamping mechanism, so that thrust is continuously applied to the retaining mechanism through the elastic thrust mechanism, and the retaining mechanism is inserted into the bearing outer ring after passing through a through hole formed in the outer ring positioning and clamping mechanism. Automatic assembly of the needle roller bearing is achieved, the retaining mechanism can retain the positions of the needle rollers in the inner ring press-fitting process, and it is guaranteed that the positions of the needle rollers are correct, and spacing distribution is uniform.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, and in particular to a high-efficiency automatic assembly machine for needle roller bearings. Background Art

[0002] Needle roller bearings are components that fix and reduce the load friction coefficient during mechanical transmission. Their main function is to support the mechanical rotating body to reduce the mechanical load friction coefficient of the equipment during transmission. At present, the needle roller assembly process of domestic needle roller bearings still mainly relies on manual operation, which is difficult and costly. In addition, the quality of successfully assembled bearings is not high, the assembly efficiency is low, and safety accidents are prone to occur during manual assembly. The assembly of needle roller bearings involves processes such as needle installation in the cage and inner ring press-fitting. During the press-fitting process, problems such as needle roller position offset and uneven needle roller spacing often occur, which will cause excessive load on some needle rollers and produce local overload, which will lead to excessive wear of needle rollers and raceways, shortening the service life of the bearings. Secondly, the needle rollers must be completely located in the raceway, and the needle rollers must not be offset outside the raceway or part of the needle rollers must be skewed. This can ensure that the needle rollers are in good contact with the inner and outer raceways, so that the bearings remain stable during rotation and reduce vibration and noise. Summary of the invention

[0003] The present invention aims to solve the above-mentioned defects and provides a high-efficiency automatic assembly machine for needle roller bearings.

[0004] In order to overcome the defects existing in the background technology, the technical solution adopted by the present invention to solve the technical problems is: a high-efficiency automatic assembly machine for needle roller bearings, including a bearing mechanism, on which a mobile lifting mechanism, an inner ring positioning mechanism for fixed-point placement of the inner ring of the bearing, an outer ring positioning and clamping mechanism for positioning and clamping the outer ring of the bearing, and a needle loading mechanism are arranged, the mobile lifting mechanism is configured with two and automatically moves horizontally on the bearing mechanism, one of the mobile lifting mechanisms is configured with a stamping mechanism for stamping and flanging the port of the outer ring of the bearing, and a needle removal mechanism for docking with the needle loading mechanism to remove the needle is configured below, and an inner ring grabbing mechanism is configured below the other mobile lifting mechanism, and the inner ring positioning mechanism, the outer ring positioning and clamping mechanism and the needle loading mechanism are located directly below the moving track of the mobile lifting mechanism; The elastic thrust mechanism is arranged below the outer ring positioning clamping mechanism, and a retaining mechanism is provided on the elastic thrust mechanism so that the retaining mechanism is continuously thrusted by the elastic thrust mechanism, so that the retaining mechanism is inserted into the outer ring of the bearing through the through hole opened on the outer ring positioning clamping mechanism to maintain the position of the needle roller.

[0005] A further improvement includes that the outer ring positioning and clamping mechanism comprises a loading plate and two clamping cylinders arranged relatively on the loading plate, and the output end of the clamping cylinder is connected to the positioning clamping part for positioning and clamping the outer ring of the bearing through the positioning clamping part.

[0006] A further improvement includes that the positioning clamping portion is slidably arranged on the loading plate.

[0007] A further improvement includes that the clamping surface of the positioning clamping portion for the bearing outer ring matches the bearing outer ring.

[0008] Further improvements include that the elastic thrust mechanism includes at least two guide rods and a push plate, one end of the guide rod is connected to the outer ring positioning clamping mechanism, and the other end passes through the push plate and is connected to the reverse thrust block, and the guide rod sleeve is provided with a thrust spring located between the push plate and the reverse thrust block, and a retaining mechanism is arranged on the push plate.

[0009] A further improvement includes that the retaining mechanism comprises a connecting portion and a retaining column, a plurality of retaining columns are provided, and the retaining columns are axially arranged on the connecting portion in a circular array, and the side surfaces of the retaining columns are provided with an arc-shaped veneer matching the surface of the needle roller.

[0010] A further improvement includes providing a chamfered opening for guiding on the end of the retaining column.

[0011] Further improvements include that the mobile lifting mechanism includes a vertical beam assembly, a hydraulic cylinder arranged in the vertical beam assembly is connected to the loading part, and the loading part is slidably arranged up and down in the vertical beam assembly, a mobile motor is arranged in the vertical beam assembly, the output end of the mobile motor is connected to the mobile gear, and the mobile gear is meshed with a rack laid on the supporting mechanism.

[0012] A further improvement includes a pressure roller rollingly arranged in the vertical beam assembly and abutting against the bearing mechanism, wherein the pressure roller is rollingly arranged on the bearing mechanism.

[0013] A further improvement includes that the inner ring positioning mechanism includes a fixing seat and an inner ring accommodating portion for fixed-point loading of the bearing inner ring, and the fixing seat is connected to the inner ring accommodating portion.

[0014] Further improvements include that the needle removal mechanism comprises a needle removal body and an air pump, a plurality of needle grooves for accommodating rolling needles are equidistantly arranged at the end of the needle removal body, a suction hole connected to the interior of the needle removal body is arranged on the inner wall of the needle groove, and the air pump is connected to the needle removal body through a pipeline so that the suction hole produces an adsorption force on the rolling needle.

[0015] A further improvement includes that the end of the needle removal body is provided with a docking groove that is matched with the retaining mechanism.

[0016] A further improvement includes that the inner ring grabbing mechanism comprises a ring removing body and an air pump, a step portion is provided at the end of the ring removing body, the step portion has a diameter smaller than that of the ring removing body, and an air hole is provided on the surface of the step portion, and the air pump is connected to the ring removing body through a pipeline so that the air hole generates an adsorption force on the inner ring of the bearing.

[0017] A further improvement includes providing a guiding slope at the end of the step portion for guiding.

[0018] A further improvement includes that the needle loading mechanism comprises a needle loading disk with a circular ring structure, a piston cavity with a ring structure and a plurality of radially distributed needle loading cavities are provided in the needle loading disk, the needle loading cavity is located in the piston cavity and connected to the piston cavity, the needle loading disk has axially provided needle loading holes which are respectively connected to the needle loading cavities and used for placing the roller needle, and the needle loading cavity is provided with a pushing block which is used for piston movement and pushing the roller needle to contact the needle removal mechanism, and the needle loading disk is provided with a connecting tube which is used to communicate with the piston cavity.

[0019] A further improvement includes a loading chamber for accommodating a baffle plate on the inner wall of the needle loading chamber, one end of the baffle plate being rotatably disposed in the loading chamber via a rotating shaft, a retaining spring being connected between the baffle plate and the inner wall of the loading chamber, thereby pushing the baffle plate through the retaining spring to limit the movement of the roller needle in the needle loading chamber.

[0020] Further improvements include that the stamping mechanism includes at least a pressure seat, a pressurizing cylinder and a transition plate, the pressure seat is connected to one end of the pressurizing cylinder, the other end of the pressurizing cylinder is connected to the transition plate, the transition plate is loaded with a pressurizing flange portion, and the pressurizing flange portion is coaxially arranged with the needle removal mechanism.

[0021] The beneficial effects of the present invention are: the present design realizes the automatic assembly of needle roller bearings, greatly improves production efficiency, effectively saves production time, has a high degree of automation, and is suitable for promotion. The needle rollers can be kept in position during the inner ring press-fitting process, so that the needle rollers are kept in the correct position and evenly distributed, ensuring even load distribution during operation, avoiding needle roller deviation, and thereby improving the yield rate of assembled bearings after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a front view of the present invention; Figure 2 It is a left side view of the mobile lifting mechanism in the present invention; Figure 3 It is a front view of the inner ring positioning mechanism of the present invention; Figure 4 It is a front view of the needle removal mechanism of the present invention; Figure 5 It is a bottom view of the needle removal mechanism of the present invention; Figure 6 It is a front view of the inner ring grabbing mechanism of the present invention; Figure 7 It is an assembly diagram of the outer ring positioning clamping mechanism and the elastic thrust mechanism in the present invention; Figure 8 is a top view of the holding mechanism in the present invention; Fig. 9 is a top view of the needle loading mechanism of the present invention; Fig.10 yes Fig. 9 Middle A: Enlarged view; In the figure, 1-inner ring positioning mechanism, 2-outer ring positioning clamping mechanism, 3-inner ring grabbing mechanism, 4-carrying mechanism, 5-moving lifting mechanism, 6-punching mechanism, 7-needle taking mechanism, 8-needle loading mechanism, 9-holding mechanism, 10-elastic thrust mechanism, 11-air pump; 101-inner ring accommodating portion, 102-fixed seat; 201-clamping cylinder, 202-loading plate, 203-positioning clamping part, 204-through hole; 301- ring body, 302- step portion, 303- air hole, 304- guide slope; 501- rack, 502- moving gear, 503- moving motor, 504- vertical beam assembly, 505- pressure roller, 506- hydraulic cylinder, 507- loading part; 601-pressure seat, 602-pressurizing cylinder, 603-pressurizing flange, 604-transition plate; 701-needle removal body, 702-suction hole, 703-needle slot, 704-docking slot; 801-pushing block, 802-piston chamber, 803-needle loading plate, 804-connecting tube, 805-baffle, 806-loading chamber, 807-holding spring, 808-needle loading chamber; 901-retaining column, 902-chamfered opening, 903-connecting portion, 904-arc veneer; 1001-guide rod, 1002-thrust spring, 1003-push plate, 1004-reverse thrust block. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] according to Figure 1 and Figure 7 As shown, a high-efficiency automatic assembly machine for needle roller bearings comprises a bearing mechanism 4, on which a mobile lifting mechanism 5, an inner ring positioning mechanism 1 for placing the inner ring of the bearing at a fixed point, an outer ring positioning clamping mechanism 2 for positioning and clamping the outer ring of the bearing, and a needle loading mechanism 8 are arranged. The mobile lifting mechanism 5 is configured with two and automatically moves horizontally on the bearing mechanism 4. One of the mobile lifting mechanisms 5 is configured with a punching mechanism 6 for punching and flanging the port of the outer ring of the bearing, and a needle taking mechanism 7 for docking with the needle loading mechanism 8 to take the needle is arranged below, thereby driving the needle taking mechanism 7 to move up and down, so that the retaining frame fully loaded with needle rollers is placed in the outer ring of the bearing. An inner ring grabbing mechanism 3 is arranged below the other mobile lifting mechanism 5, thereby driving the inner ring grabbing mechanism 3 to move up and down, grab the inner ring loaded in the inner ring positioning mechanism 1 and then press it into the bearing. The inner ring positioning mechanism 1, the outer ring positioning clamping mechanism 2 and the needle loading mechanism 8 are located directly below the moving track of the mobile lifting mechanism 5, and the mobile lifting mechanism 5 has the functions of lifting and pressing. The elastic thrust mechanism 10 is arranged below the outer ring positioning and clamping mechanism 2, and a holding mechanism 9 is provided thereon so that the elastic thrust mechanism 10 continuously applies thrust to the holding mechanism 9, so that the holding mechanism 9 is inserted into the outer ring of the bearing through the through hole 204 opened on the outer ring positioning and clamping mechanism 2, so that the position of the needle roller is maintained, avoiding the displacement of the needle roller position during press fitting, ensuring that the inner ring of the bearing is accurately pressed into between the needle rollers in the bearing, reducing the needle roller adjustment time, ensuring that the spacing between the needle rollers is uniform, and the force is uniform during press fitting.

[0026] In this embodiment, in order to ensure the stability when the needle roller and the retainer are loaded in the outer ring of the bearing and to prevent the bearing from being lifted up when the needle removal mechanism 7 withdraws from the bearing, the outer ring of the bearing needs to be clamped during assembly. Specifically, Figure 7As shown, the outer ring positioning and clamping mechanism 2 includes a loading plate 202 and two clamping cylinders 201 arranged relatively on the loading plate 202. The output end of the clamping cylinder 201 is connected to a positioning clamping portion 203 for positioning and clamping the outer ring of the bearing through the positioning clamping portion 203. The positioning clamping portion 203 is slidably arranged on the loading plate 202, which is beneficial to improving the stability during clamping. The clamping surface of the positioning clamping portion 203 on the bearing outer ring matches the bearing outer ring, thereby avoiding deformation of the outer ring during stamping.

[0027] In this embodiment, if Figure 7 As shown, the elastic thrust mechanism 10 includes at least two guide rods 1001 and a push plate 1003, one end of the guide rod 1001 is connected to the outer ring positioning clamping mechanism 2, and the other end passes through the push plate 1003 and is connected to the reverse thrust block 1004, and the guide rod 1001 is sleeved with a thrust spring 1002 located between the push plate 1003 and the reverse thrust block 1004, and a retaining mechanism 9 is arranged on the push plate 1003, and a thrust is continuously applied to the retaining mechanism 9 through the thrust spring 1002, so that the retaining mechanism 9 is inserted into the inner ring of the bearing through the through hole 204, wherein the guide rod 1001 plays the role of precise guidance and stabilization of the retaining mechanism 9.

[0028] In this embodiment, if Figure 7 and Figure 8 As shown, the retaining mechanism 9 includes a connecting portion 903 and a retaining column 901. A plurality of retaining columns 901 are provided, and the retaining columns 901 are axially arranged on the connecting portion 903 according to a circumferential array. The side of the retaining column 901 is provided with an arc-shaped veneer 904 matching the surface of the needle roller. When the needle removal mechanism 7 places the retaining frame fully loaded with needle rollers into the outer ring of the bearing, the needle removal mechanism 7 will dock with the retaining mechanism 9 and push the retaining mechanism 9 out of the outer ring of the bearing. At the same time, after the retaining frame fully loaded with needle rollers is completely placed in the outer ring, the open end of the outer ring of the bearing will be stamped, and the retaining frame fully loaded with needle rollers will remain in the outer ring of the bearing. When the needle removal mechanism 7 is lifted When the bearing is lifted, the retaining mechanism 9 is lifted accordingly under the continuous thrust of the elastic thrust mechanism 10, and the retaining column 901 moves along the axial direction of the needle roller and is reinserted into the outer ring. At this time, the arc surface of the retaining column 901 fits against the needle roller, and the needle roller is held in position by the retaining column 901. In addition, after the inner ring of the bearing is pressed into place, the elastic thrust mechanism 10 drives the retaining mechanism 9 to lift up the assembled bearing, making it convenient for the robot to grab and unload the material. In a further embodiment, a chamfered opening 902 for guiding is provided on the end of the retaining column 901, so as to facilitate the smooth docking of the retaining column 901 with the needle roller and ensure that the arc surface 904 fits against the needle roller.

[0029] In this embodiment, if Figure 2As shown, the mobile lifting mechanism 5 includes a vertical beam assembly 504, and the hydraulic cylinder 506 arranged in the vertical beam assembly 504 is connected to the loading part 507 to drive the loading part 507 to move up and down, and the loading part 507 is slidably arranged up and down in the vertical beam assembly 504. A mobile motor 503 is arranged in the vertical beam assembly 504, and the output end of the mobile motor 503 is connected to the mobile gear 502, and the mobile gear 502 is meshed with the rack 501 laid on the supporting mechanism 4, so that the mobile lifting mechanism 5 is driven by the mobile motor 503 to move horizontally on the supporting mechanism 4, and the needle removal mechanism 7 and the inner ring grabbing mechanism 3 can be loaded on the loading part 507, and the hydraulic cylinder 506 will drive the needle removal mechanism 7 and the inner ring grabbing mechanism 3 to achieve up and down lifting, and realize the precise pressing of the inner ring of the bearing.

[0030] In a further embodiment, a pressure roller 505 which is in contact with the support mechanism 4 is rollingly arranged in the vertical beam assembly 504 . The pressure roller 505 is rollingly arranged on the support mechanism 4 , thereby transmitting the force exerted on the hydraulic cylinder 506 to the support mechanism 4 .

[0031] In this embodiment, if Figure 3 As shown, the inner ring positioning mechanism 1 includes a fixing seat 102 and an inner ring accommodating portion 101 for fixed-point loading of the bearing inner ring, and the fixing seat 102 is connected to the inner ring accommodating portion 101 .

[0032] In this embodiment, if Figure 4 and Figure 5 As shown, the needle removal mechanism 7 includes a needle removal body 701 and an air pump 11. A plurality of needle grooves 703 for accommodating rolling needles are circumferentially and equidistantly provided at the end of the needle removal body 701. A suction hole 702 connected to the interior of the needle removal body 701 is provided on the inner wall of the needle groove 703. The air pump 11 is connected to the needle removal body 701 through a pipeline so that the suction hole 702 generates an adsorption force on the rolling needle, thereby keeping the rolling needle in the needle groove 703, thereby realizing the function of grabbing the rolling needle.

[0033] In a further embodiment, the end of the needle removal body 701 is provided with a docking groove 704 that is docked and matched with the retaining mechanism 9. When the needle roller is placed in the outer ring of the bearing, the retaining mechanism 9 docks with the needle removal body 701, and the retaining mechanism 9 can continuously maintain the position of the needle roller. When the needle removal body 701 withdraws from the outer ring of the bearing, the retaining mechanism 9 replaces the position of the needle removal body 701 to maintain the position of the needle roller.

[0034] In this embodiment, if Figure 6As shown, the inner ring grabbing mechanism 3 includes a ring taking body 301 and an air pump 11. A step portion 302 is provided at the end of the ring taking body 301 so as to be sleeved with the inner ring of the bearing. The diameter of the step portion 302 is smaller than that of the ring taking body 301, and an air hole 303 is provided on the surface of the step portion 302. The air pump 11 is connected to the ring taking body 301 through a pipeline so that the air hole 303 generates an adsorption force on the inner ring of the bearing, thereby grabbing the inner ring of the bearing. During the press-fitting process, if the inner ring enters at an angle, the force on one end of the needle roller is much greater than that on the other end, which can easily cause the needle roller to bend, and the uneven force can also cause poor contact between the needle roller and the raceway, affecting the normal operation of the bearing. The present design ensures that the inner ring enters accurately and the force is uniform by sleeve-fitting the step portion 302 with the inner ring of the bearing. In a further implementation method, a guide slope 304 for guiding is provided at the end of the step portion 302.

[0035] In a further embodiment, according to Fig. 9 and Fig.10 As shown, the needle loading mechanism 8 comprises a needle loading plate 803 of annular structure, wherein the needle loading plate 803 is provided with a piston cavity 802 of annular structure and a plurality of needle loading cavities 808 distributed radially, wherein the needle loading cavity 808 is located in the piston cavity 802 and connected to the piston cavity 802, and the needle loading plate 803 is provided with needle loading holes 809 which are connected to the needle loading cavities 808 and used for placing the rolling needles, and the needle loading cavity 808 is provided with a piston for piston movement and pushing the rolling needles to contact the needle removal mechanism 7 The pushing block 801 in contact with the needle loading disk 803 is provided with a connecting tube 804 for communicating with the piston cavity 802. In order to enable the pushing block 801 to perform piston movement in the needle loading cavity 808, the connecting tube 804 is connected to the two-way vacuum pump through a pipeline. The vacuum pump forms negative pressure and positive pressure in the piston cavity 802 to move the pushing block 801 in the needle loading cavity 808. The pushing block 801 pushes the needle roller to make it contact with the needle removal mechanism 7 inserted into the inner hole of the needle loading disk 803, so that the needle removal mechanism 7 absorbs the needle roller.

[0036] In a further embodiment, a loading chamber 806 for accommodating a baffle 805 is provided on the inner wall of the needle loading chamber 808, one end of the baffle 805 is rotatably disposed in the loading chamber 806 via a rotating shaft, a retaining spring 807 is connected between the baffle 805 and the inner wall of the loading chamber 806, thereby pushing the baffle 805 through the retaining spring 807 to limit the movement of the roller needle in the needle loading chamber 808, the baffle 805 cooperates with the pushing block 801 to form a space for accommodating the roller needle, the pushing block 801 pushes the roller needle so that the baffle 805 compresses the retaining spring 807, and then the baffle 805 is hidden in the loading chamber 806, and the pushing block 801 can push the roller needle to contact the needle removal mechanism 7, so that the needle removal mechanism 7 can absorb the roller needle and perform subsequent assembly procedures.

[0037] In this embodiment, if Figure 2 As shown, the stamping mechanism 6 includes at least two pressure seats 601, a pressurizing cylinder 602 and a transition plate 604. The pressure seat 601 is connected to one end of the pressurizing cylinder 602, and the other end of the pressurizing cylinder 602 is connected to the transition plate 604. The transition plate 604 is loaded with a pressurizing flanging portion 603, and the pressurizing flanging portion 603 is coaxially arranged with the needle removal mechanism 7. The pressurizing flanging portion 603 is a stamping upper die, which is used to stamp and flanging the open end of the outer ring of the bearing.

[0038] Working principle: The manipulator places the inner ring of the bearing in the inner ring positioning mechanism 1, and the outer ring of the bearing in the outer ring positioning and clamping mechanism 2 in turn. The outer ring positioning and clamping mechanism 2 will position and clamp the outer ring of the bearing, and at the same time, the bearing retainer is placed in the needle installation mechanism 8; The movable lifting mechanism 5 drives the needle taking mechanism 7 to dock with the needle loading mechanism 8. The needle loading mechanism 8 pushes the needle roller to be arranged in the needle groove 703 on the needle taking body 701. The suction hole 702 sucks the needle roller. At this time, the retaining frame is fully loaded with needle rollers. The movable lifting mechanism 5 drives the needle taking mechanism 7 to place the retaining frame fully loaded with needle rollers in the outer ring of the bearing. At this time, the needle taking mechanism 7 pushes the retaining mechanism 9 out of the outer ring of the bearing. After the retaining frame fully loaded with needle rollers is placed in the outer ring, the stamping mechanism 6 stamps and flanging the open end of the outer ring of the bearing, and the retaining frame fully loaded with needle rollers is The needle roller and the retaining frame will not move due to the lifting of the needle removal mechanism 7 because the stamping process has been carried out when the needle removal mechanism 7 is lifted. After the needle removal mechanism 7 is lifted, the retaining mechanism 9 is pushed to be reinserted into the bearing under the action of the elastic thrust mechanism 10. The arc-shaped surface 904 on the retaining column 901 in the retaining mechanism 9 fits on the needle roller, so that the needle roller is kept in position, avoiding the displacement of the needle roller position when the inner ring is pressed. The mobile lifting mechanism 5 loaded with the inner ring grabbing mechanism 3 moves to the top of the inner ring positioning mechanism 1 to grab the inner ring, and then presses the inner ring into between the needle rollers of the bearing. During the press-fitting, the inner ring will push the retaining mechanism 9 out of the bearing again. After the press-fitting is completed, the inner ring grabbing mechanism 3 is lifted and the outer ring positioning clamping mechanism 2 releases the bearing. Under the action of the elastic thrust mechanism 10, the retaining mechanism 9 is driven to push the assembled bearing out of the outer ring positioning clamping mechanism 2, thereby realizing rapid unloading of the robot.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-efficiency automatic assembly machine for needle roller bearings, characterized in that: It comprises a bearing mechanism (4) on which a movable lifting mechanism (5), an inner ring positioning mechanism (1) for placing the inner ring of the bearing at a fixed point, an outer ring positioning clamping mechanism (2) for positioning and clamping the outer ring of the bearing, and a needle loading mechanism (8) are arranged. The movable lifting mechanism (5) is configured with two and automatically moves horizontally on the bearing mechanism (4). One of the movable lifting mechanisms (5) is configured with a punching mechanism (6) for punching and flanging the outer ring port of the bearing, and a needle removal mechanism (7) for docking with the needle loading mechanism (8) for removing the needle is configured below. The other movable lifting mechanism (5) is configured with an inner ring grabbing mechanism (3) below. The inner ring positioning mechanism (1), the outer ring positioning clamping mechanism (2), and the needle loading mechanism (8) are located directly below the moving track of the movable lifting mechanism (5); The elastic thrust mechanism (10) is arranged below the outer ring positioning clamping mechanism (2) and is provided with a retaining mechanism (9) so that the elastic thrust mechanism (10) continuously applies thrust to the retaining mechanism (9) so that the retaining mechanism (9) passes through a through hole (204) provided on the outer ring positioning clamping mechanism (2) and is inserted into the outer ring of the bearing, thereby maintaining the position of the needle roller.

2. The high-efficiency automatic needle roller bearing assembly machine according to claim 1, characterized in that: The outer ring positioning clamping mechanism (2) comprises a loading plate (202) and two clamping cylinders (201) arranged relatively to each other on the loading plate (202); the output end of the clamping cylinder (201) is connected to a positioning clamping portion (203) for positioning and clamping the outer ring of the bearing via the positioning clamping portion (203).

3. The high-efficiency automatic needle roller bearing assembly machine according to claim 1, characterized in that: The elastic thrust mechanism (10) comprises at least two guide rods (1001) and a push plate (1003); one end of the guide rod (1001) is connected to the outer ring positioning clamping mechanism (2), and the other end passes through the push plate (1003) and is connected to the reverse thrust block (1004); the guide rod (1001) is sleeved with a thrust spring (1002) located between the push plate (1003) and the reverse thrust block (1004); and a retaining mechanism (9) is provided on the push plate (1003).

4. The high-efficiency automatic needle roller bearing assembly machine according to claim 1, characterized in that: The retaining mechanism (9) comprises a connecting portion (903) and a retaining column (901), a plurality of retaining columns (901) are provided, and the retaining columns (901) are axially arranged on the connecting portion (903) in a circular array, and an arc-shaped veneer (904) matching the surface of the needle roller is provided on the side surface of the retaining column (901).

5. The high-efficiency automatic needle roller bearing assembly machine according to claim 1, characterized in that: The mobile lifting mechanism (5) comprises a vertical beam assembly (504), a hydraulic cylinder (506) arranged in the vertical beam assembly (504) connected to a loading part (507), and the loading part (507) is arranged to slide up and down in the vertical beam assembly (504), a mobile motor (503) is arranged in the vertical beam assembly (504), an output end of the mobile motor (503) is connected to a mobile gear (502), and the mobile gear (502) is meshed with a rack (501) laid on the supporting mechanism (4).

6. The high-efficiency automatic needle roller bearing assembly machine according to claim 1, characterized in that: The needle removal mechanism (7) comprises a needle removal body (701) and an air pump (11); a plurality of needle grooves (703) for accommodating rolling needles are equidistantly arranged at the end of the needle removal body (701); a suction hole (702) communicating with the interior of the needle removal body (701) is arranged on the inner wall of the needle groove (703); the air pump (11) is connected to the needle removal body (701) via a pipeline so that the suction hole (702) generates an adsorption force on the rolling needle.

7. The high-efficiency automatic needle roller bearing assembly machine according to claim 1, characterized in that: The inner ring grabbing mechanism (3) comprises a ring taking body (301) and an air pump (11); a step portion (302) is provided at the end of the ring taking body (301); the diameter of the step portion (302) is smaller than that of the ring taking body (301); and an air hole (303) is provided on the surface of the step portion (302); the air pump (11) is connected to the ring taking body (301) via a pipeline so that the air hole (303) generates an adsorption force on the inner ring of the bearing.

8. The high-efficiency automatic needle roller bearing assembly machine according to claim 1, characterized in that: The needle loading mechanism (8) comprises a needle loading disk (803) of annular structure, a piston cavity (802) of annular structure and a plurality of radially distributed needle loading cavities (808) are provided in the needle loading disk (803), the needle loading cavity (808) is located in the piston cavity (802) and connected to the piston cavity (802), the needle loading disk (803) is axially provided with needle loading holes (809) which are respectively connected to the needle loading cavities (808) and used for placing rolling needles, and a pushing block (801) for performing piston movement and pushing the rolling needle to contact the needle removal mechanism (7) is provided in the needle loading cavity (808), and a connecting tube (804) for communicating with the piston cavity (802) is provided on the needle loading disk (803).

9. The high-efficiency automatic needle roller bearing assembly machine according to claim 8, characterized in that: A loading chamber (806) for accommodating a baffle (805) is provided on the inner wall of the needle loading chamber (808); one end of the baffle (805) is rotatably disposed in the loading chamber (806) via a rotating shaft; a retaining spring (807) is connected between the baffle (805) and the inner wall of the loading chamber (806), so that the retaining spring (807) pushes the baffle (805) to limit the movement of the roller needle in the needle loading chamber (808).

10. The high-efficiency automatic needle roller bearing assembly machine according to claim 1, characterized in that: The punching mechanism (6) comprises at least two pressure seats (601), a pressurizing cylinder (602) and a transition plate (604); the pressure seat (601) is connected to one end of the pressurizing cylinder (602); the other end of the pressurizing cylinder (602) is connected to the transition plate (604); a pressurizing flange portion (603) is loaded on the transition plate (604); and the pressurizing flange portion (603) is coaxially arranged with the needle removal mechanism (7).

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