Discharging mechanism for hub assembly and screw assembly equipment

Abstract

The utility model discloses a discharging mechanism for assembling a hub. The discharging mechanism comprises a screw taking assembly and a screw transferring assembly. The pre-assembled screws can be taken out from the positioning clamp through the screw taking assembly, the screws are transferred through the screw transferring assembly, automatic discharging of the assembled screws is achieved, and the automatic discharging device has the advantages of being simple in structure and low in cost. The utility model discloses screw assembling equipment for hub assembling. The screw assembling equipment comprises a rack, a rotary table, a round nut feeding mechanism, a screw feeding and tightening mechanism, a gasket feeding mechanism, a square nut feeding and tightening mechanism and a discharging mechanism. The round nut feeding station, the screw feeding and tightening station, the gasket feeding station, the square nut feeding and tightening station and the discharging station are arranged on the rotating disc, feeding of round nuts, feeding and tightening of screws, feeding of gaskets, feeding of square nuts, tightening and discharging can be completed in sequence, the cost is lower, the structure is compact, and the working efficiency is high.

Description

Technical Field

[0001] The utility model relates to a blanking mechanism for hub assembly and also relates to screw assembly equipment for hub assembly. Background Art

[0002] The hub is an important part of the bicycle. The basic structure of the hub includes the hub shell, screw, round nut, ball, gasket, square nut and other parts. In order to realize the automatic assembly of the hub, the hub needs to be pre-assembled (assembled with several parts) and then transferred to the assembly line for final assembly. Figure 8 It is a completed pre-assembled component. In order to coordinate the process between pre-assembly and final assembly, the completed pre-assembled components need to be transported to the conveyor line through the unloading mechanism; the process of unloading the completed pre-assembled components from the screw assembly equipment to the conveyor line requires two actions, one is to remove the completed pre-assembled components from the positioning fixture, and the other is to move the removed components to the conveyor line. In the existing technology, the above steps are completed by a robotic arm, which is costly. Utility Model Content

[0003] In view of the technical problem of high cost in the prior art mentioned above, which is to use a mechanical arm to complete the work of removing the pre-assembled parts from the positioning fixture and moving them to the conveyor line; the technical solution adopted by the utility model to solve the technical problem is: a blanking mechanism for hub drum assembly, the blanking mechanism includes: a screw removal assembly and a screw transfer assembly; the screw removal assembly is used to remove the assembled screw, the screw removal assembly includes: a lifting guide rail, a first lifting drive cylinder and a first clamping cylinder, the lifting guide rail is arranged between the frame and the first clamping cylinder, the first lifting drive cylinder is arranged on the frame to drive the first clamping cylinder to lift, and the left clamping jaw and the right clamping jaw of the first clamping cylinder are respectively provided with positioning hooks for positioning the screw; the screw transfer assembly is used to clamp and output the removed screw, and the screw transfer assembly includes: a horizontal sliding Seat, horizontal drive, vertical sliding seat, vertical drive, first rotary cylinder, second rotary cylinder and second clamping cylinder, the horizontal sliding seat is slidably connected to the frame, the horizontal drive is arranged on the frame to drive the horizontal sliding seat to slide in the horizontal direction, the vertical sliding seat is slidably connected to the horizontal sliding seat, the vertical drive is arranged on the frame to drive the vertical sliding seat to slide in the vertical direction, the first rotary cylinder is connected to the vertical sliding seat, the main body of the second rotary cylinder is connected to the rotating part of the first rotary cylinder, and the main body of the second clamping cylinder is connected to the rotating part of the second rotary cylinder.

[0004] In the above-mentioned blanking mechanism for hub assembly, the positioning hook has an L-shaped shape, and a semicircular positioning surface is provided at the position where the positioning hook contacts the screw.

[0005] In the above-mentioned unloading mechanism for hub assembly, one side of the screw transfer assembly is provided with a screw conveyor line for receiving the assembled screws output by the screw transfer assembly.

[0006] The utility model discloses a screw assembly device for hub assembly, comprising: a frame, a turntable, a round nut feeding mechanism, a screw feeding and tightening mechanism, a gasket feeding mechanism, a square nut feeding and tightening mechanism, and a blanking mechanism; the turntable is arranged on the frame and can rotate relative to the frame, the turntable is provided with multiple sets of positioning fixtures, the frame is provided with a round nut feeding station, a screw feeding and tightening station, a gasket feeding station, a square nut feeding and tightening station, and a blanking station in sequence along the rotation direction of the turntable; the round nut feeding mechanism is arranged on the round nut feeding station, and is used to transfer the round nuts one by one to the round nut feeding station. On the positioning fixture of the loading station; the screw feeding and tightening mechanism is arranged at the screw loading and tightening station, and is used to assemble the screw to the round nut on the positioning fixture that moves to the screw loading and tightening station; the gasket feeding mechanism is arranged at the gasket loading station, and is used to assemble the gasket to the screw on the positioning fixture that moves to the gasket loading station; the square nut loading and tightening mechanism is arranged at the square nut loading and tightening station, and is used to assemble the square nut to the screw on the positioning fixture that moves to the square nut loading and tightening station; the unloading mechanism is arranged at the unloading station, and is used to unload the screw on the positioning fixture that moves to the unloading station.

[0007] As described above, a screw assembly device for hub assembly, the positioning fixture includes: a screw positioning sleeve for positioning the screw and a round nut positioning mechanism for positioning the round nut, the screw positioning sleeve is arranged on a turntable, and the round nut positioning mechanism includes: a positioning slider and an elastic member, the positioning slider is slidably connected to the turntable, one end of the positioning slider is provided with a U-shaped bayonet that can be snapped into the round nut, and the elastic member is arranged between the turntable and the positioning slider to drive the U-shaped bayonet on the positioning slider to maintain the positioning state of the round nut.

[0008] As described above, a screw assembly device for hub assembly is provided, wherein the frame is provided with a nut releasing positioning assembly located at the round nut loading station, the square nut loading and tightening station, and the unloading station, respectively, for releasing the U-shaped bayonet on the positioning slider from the positioning state of the round nut. The nut releasing positioning assembly comprises: a releasing hook and a releasing cylinder for driving the releasing hook, and the positioning slider is provided with a protrusion that can cooperate with the releasing hook.

[0009] As described above, a screw assembly device for hub assembly, the round nut loading mechanism includes: a round nut feeder, a round nut conveying guide rail and a round nut transferring mechanism, the output end of the round nut feeder is connected to the round nut conveying guide rail and conveys the round nuts to the round nut conveying guide rail, and the round nut transferring mechanism is arranged on the frame and is used to transfer the round nuts at the end of the round nut conveying guide rail to the positioning fixture that moves to the round nut loading station.

[0010] As described above, a screw assembly device for hub assembly, the screw feeding and tightening mechanism includes: a screw feeding assembly, a screw picking and flipping assembly and a screw tightening assembly. The screw picking and flipping assembly is arranged on the frame and is used to clamp the screw output by the screw feeding assembly and flip it into a vertical state and then transfer it to the round nut on the positioning fixture of the screw feeding and tightening station. The screw tightening assembly is arranged on the frame and is used to screw the screw into the round nut.

[0011] As described above, a screw assembly device for hub assembly, the gasket loading mechanism includes: a gasket feeding assembly and a gasket transferring assembly, the gasket transferring assembly is arranged on the frame and is used to transfer the gasket output by the gasket feeding assembly to the screw on the positioning fixture of the gasket loading station.

[0012] As described above, a screw assembly device for hub assembly, the square nut loading and tightening mechanism includes: a square nut feeding assembly, a square nut transplanting and tightening assembly, and the square nut transplanting and tightening assembly is arranged on a frame for assembling the square nuts output by the square nut feeding assembly to the screw on the positioning fixture of the square nut loading and tightening station.

[0013] The beneficial effects of the utility model are:

[0014] 1. The screw assembly equipment for hub assembly of the utility model is capable of completing the loading of round nuts, the loading and tightening of screws, the loading and tightening of gaskets, the loading and tightening of square nuts, and the unloading of materials in sequence by arranging a round nut loading station, a screw loading and tightening station, a gasket loading station, a square nut loading and tightening station, and an unloading station on a turntable. Compared with the method of using a robotic arm, the cost is lower, the structure is compact, and the working efficiency is high.

[0015] 2. The unloading mechanism for hub assembly of the utility model can remove the pre-assembled screw from the positioning fixture by taking out the screw assembly, and transfer the screw through the screw transfer assembly to realize automatic unloading of the assembled screw, which has the advantages of simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view schematic diagram of the screw assembly device of the present invention;

[0017] Figure 2 This is a structural diagram of the screw assembly equipment of the present utility model;

[0018] Figure 3 for Figure 2 An enlarged view of the portion marked A;

[0019] Figure 4 for Figure 2 An enlarged view of the portion marked B;

[0020] Figure 5 for Figure 2 An enlarged view of the portion marked C;

[0021] Figure 6 This is a front view structural diagram of the screw assembly equipment of the present invention;

[0022] Figure 7 It is a right side structural schematic diagram of the screw assembly equipment of the present invention;

[0023] Figure 8 The utility model is used to process and finish the pre-assembled parts by using the screw assembly equipment. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings.

[0025] like Figures 1 to 7As shown, a screw assembly device for hub assembly in this embodiment includes: a frame 1, a turntable 2, a round nut feeding mechanism 4, a screw feeding and tightening mechanism 5, a square nut feeding and tightening mechanism 7 and the unloading mechanism 8. The turntable 2 is arranged on the frame 1 and can rotate relative to the frame 1. The turntable 2 is provided with multiple groups of positioning fixtures 3. The frame 1 is provided with a round nut feeding station 1001, a screw feeding and tightening station 1002, a gasket feeding station 1003, a square nut feeding and tightening station 1004 and an unloading station 1005 in sequence along the rotation direction of the turntable 2; the round nut feeding mechanism 4 is provided on the round nut loading station 1001, and is used to transfer the round nuts 901 one by one to the positioning fixture 3 that moves to the round nut loading station 1001; The screw feeding and tightening mechanism 5 is arranged at the screw feeding and tightening station 1002, and is used to assemble the screw 902 to the round nut 901 on the positioning fixture 3 that moves to the screw feeding and tightening station 1002; the gasket feeding mechanism 6, the gasket feeding mechanism 6 is arranged at the gasket loading station 1003, and is used to assemble the gasket 903 to the screw 902 on the positioning fixture 3 that moves to the gasket loading station 1003; the square nut feeding and tightening mechanism 7 is arranged at the square nut loading and tightening station 1004, and is used to assemble the square nut 904 to the screw 902 on the positioning fixture 3 that moves to the square nut loading and tightening station 1004; the unloading mechanism 8 is arranged at the unloading station 1005, and is used to unload the screw 902 on the positioning fixture 3 that moves to the unloading station 1005. The screw assembly equipment for hub assembly of the utility model can sequentially complete the loading of round nuts, the loading and tightening of screws, the loading and tightening of gaskets, the loading and tightening of square nuts, and the unloading of materials by arranging a round nut loading station, a screw loading and tightening station, a gasket loading station, a square nut loading and tightening station, and an unloading station on a turntable. Compared with the method of using a robotic arm, the cost is lower, the structure is compact, and the work efficiency is high.

[0026] In this embodiment, the positioning fixture 3 includes: a screw positioning sleeve 31 for positioning the screw 902 and a round nut positioning mechanism 32 for positioning the round nut 901. The screw positioning sleeve 31 is disposed on the turntable 2. The round nut positioning mechanism 32 includes: a positioning slider 321 and an elastic member 322 (spring). The positioning slider 321 is slidably connected to the turntable 2. One end of the positioning slider 321 is provided with a U-shaped bayonet 3210 that can engage the round nut 901. The elastic member 322 is disposed between the turntable 2 and the positioning slider 321 to drive the U-shaped bayonet 3210 on the positioning slider 321 to maintain the positioning state of the round nut 901. The positioning fixture 3 is used to assist in positioning the screw and nut during assembly. The screw 902 is first positioned by the screw positioning sleeve 31. The elastic member 322 then forces the U-shaped bayonet 3210 to engage the round nut 901, thereby achieving positioning of the round nut and facilitating smooth screwing of the round nut onto the screw.

[0027] In this embodiment, a nut releasing and positioning assembly 33 for releasing the U-shaped bayonet 3210 on the positioning slider 321 from the positioning state of the round nut 901 is provided on the frame 1 and located at the round nut loading station 1001, the square nut loading and tightening station 1004, and the unloading station 1005. The nut releasing and positioning assembly 33 comprises a releasing hook 331 and a releasing cylinder 332 for driving the releasing hook 331. The positioning slider 321 is provided with a protrusion 333 that can cooperate with the releasing hook 331. When it is necessary to release the positioning state of the round nut 901, the releasing cylinder 332 is driven to drive the releasing hook to move the protrusion 333 to move the positioning slider and thereby separate the U-shaped bayonet 3210 from the round nut.

[0028] In this embodiment, the round nut loading mechanism 4 includes: a round nut feeder 41, a round nut conveying guide rail 42 and a round nut transfer mechanism 43. The output end of the round nut feeder 41 is connected to the round nut conveying guide rail 42 and conveys the round nuts 901 to the round nut conveying guide rail 42. The round nut transfer mechanism 43 is arranged on the frame 1 and is used to transfer the round nuts 901 at the end of the round nut conveying guide rail 42 to the positioning fixture 3 that moves to the round nut loading station 1001. The round nut loading mechanism 4 provides round nuts through the round nut feeder 41, and conveys them out through the round nut conveying guide rail 42. Finally, the round nut transfer mechanism transfers the round nuts 901 at the end of the round nut conveying guide rail 42 to the positioning fixture 3 that moves to the round nut loading station 1001.

[0029] In this embodiment, the screw feeding and tightening mechanism 5 includes: a screw feeding assembly 51, a screw picking and flipping assembly 52, and a screw screwing assembly 53. The screw picking and flipping assembly 52 is arranged on the frame 1 and is used to clamp the screw 902 output by the screw feeding assembly 51, flip it into a vertical state, and then transfer it to the round nut 901 on the positioning fixture 3 of the screw feeding and tightening station 1002. The screw screwing assembly 53 is arranged on the frame 1 and is used to screw the screw 902 into the round nut 901. The screw feeding and tightening mechanism outputs the screw through the screw feeding assembly 51, clamps the screw 902 output by the screw feeding assembly 51 through the screw picking and flipping assembly 52, flips it into a vertical state, and then transfers it to the round nut 901 on the positioning fixture 3 of the screw feeding and tightening station 1002. Finally, the screw 902 is screwed into the round nut 901 by the screw screwing assembly 53.

[0030] The gasket loading mechanism 6 of this embodiment includes: a gasket feeding assembly 61 and a gasket transfer assembly 62. The gasket transfer assembly 62 is disposed on the frame 1 and is used to transfer the gasket 903 output by the gasket feeding assembly 61 to the screw 902 on the positioning fixture 3 of the gasket loading station 1003. The gasket 903 output by the gasket feeding assembly 61 is transferred to the screw 902 on the positioning fixture 3 of the gasket loading station 1003 by the gasket transfer assembly, thereby realizing automatic installation of the gasket.

[0031] In this embodiment, the square nut feeding and tightening mechanism 7 includes: a square nut feeding assembly 71 and a square nut transferring and tightening assembly 72. The square nut transferring and tightening assembly 72 is disposed on the frame 1 and is used to assemble the square nuts 904 output by the square nut feeding assembly 71 onto the screw 902 on the positioning fixture 3 of the square nut feeding and tightening station 1004. The square nut feeding and tightening mechanism 7 outputs the square nuts via the square nut feeding assembly and assembles the square nuts 904 output by the square nut feeding assembly 71 onto the screw 902 on the positioning fixture 3 of the square nut feeding and tightening station 1004 via the square nut transferring and tightening assembly 72, thereby achieving the loading and tightening of the square nuts.

[0032] The present embodiment is a blanking mechanism for hub assembly, the blanking mechanism 8 includes: a screw assembly 81 and a screw transfer assembly 82; the screw assembly 81 is used to take out the assembled screw 902, the screw assembly 81 includes: a lifting guide rail 811, a first lifting drive cylinder 812 and a first clamping cylinder 813, the lifting guide rail 811 is arranged between the frame 1 and the first clamping cylinder 813, the first lifting drive cylinder 812 is arranged on the frame 1 to drive the first clamping cylinder 813 to rise and fall, and the left clamping jaw and the right clamping jaw of the first clamping cylinder 813 are respectively provided with a positioning hook 814 for positioning the screw 902; the screw transfer assembly 82 is used to clamp and output the taken-out screw 902, the screw transfer assembly 82 includes: a horizontal sliding seat 821 , horizontal driver 822, vertical sliding seat 823, vertical driver 824, first rotary cylinder 825, second rotary cylinder 826 and second clamping cylinder 827, the horizontal sliding seat 821 is slidably connected to the frame 1, the horizontal driver 822 is arranged on the frame 1 to drive the horizontal sliding seat 821 to slide in the horizontal direction, the vertical sliding seat 823 is slidably connected to the horizontal sliding seat 821, the vertical driver 824 is arranged on the frame 1 to drive the vertical sliding seat 823 to slide in the vertical direction, the first rotary cylinder 825 is connected to the vertical sliding seat 823, the main body of the second rotary cylinder 826 is connected to the rotating part of the first rotary cylinder 825, and the main body of the second clamping cylinder 827 is connected to the rotating part of the second rotary cylinder 826. The unloading mechanism for hub assembly of the utility model can remove the pre-assembled screw from the positioning fixture by taking out the screw assembly, and transfer the screw through the screw transfer assembly to realize automatic unloading of the assembled screw, which has the advantages of simple structure and low cost.

[0033] When the assembled screw assembly moves to the unloading station 1005 with the tray, the nut release positioning assembly 33 releases the U-shaped bayonet 3210 on the positioning slider 321 from the positioning state of the round nut 901 (the screw can be taken out from the screw positioning sleeve 31 at this time). When the screw assembly 81 is taken out for use, the first clamping cylinder is first opened to drive the two positioning hooks 814 to separate, and then the first clamping cylinder is driven downward under the action of the first lifting drive cylinder 812, so that the two positioning hooks 814 can hook the round nut on the screw, and then the first clamping cylinder is actuated to make the two positioning hooks 814 close to clamp the screw, and finally the first lifting drive cylinder 812 drives the first clamping cylinder to move upward to take the assembled screw out of the positioning fixture.

[0034] In this embodiment, the positioning hook 814 has an “L” shape, and a semicircular positioning surface 8140 is provided at the position where the positioning hook 814 contacts the screw rod 902 .

[0035] In order to facilitate the assembly of the assembled screw, a screw conveying line 83 for receiving the assembled screw 902 output by the screw transferring assembly 82 is provided on one side of the screw transferring assembly 82 .

[0036] The above examples are merely used to further illustrate the technical content of the present invention for easier understanding by the reader. However, they do not limit the implementation of the present invention to these examples. Any technical extension or reinvention based on the present invention is protected by the present invention. The scope of protection of the present invention shall be determined by the claims.

Claims

1. A blanking mechanism for hub assembly, characterized in that: The blanking mechanism (8) comprises: Take the screw assembly (81) and the screw transfer assembly (82); The screw rod removal assembly (81) is used to remove the assembled screw rod (902). The screw rod removal assembly (81) comprises: a lifting guide rail (811), a first lifting drive cylinder (812) and a first clamping claw cylinder (813). The lifting guide rail (811) is arranged between the frame (1) and the first clamping claw cylinder (813). The first lifting drive cylinder (812) is arranged on the frame (1) to drive the first clamping claw cylinder (813) to move up and down. The left clamping claw and the right clamping claw of the first clamping claw cylinder (813) are respectively provided with positioning hooks (814) for positioning the screw rod (902). The screw transfer assembly (82) is used to clamp and output the removed screw (902). The screw transfer assembly (82) includes: a horizontal sliding seat (821), a horizontal driver (822), a vertical sliding seat (823), a vertical driver (824), a first rotary cylinder (825), a second rotary cylinder (826) and a second clamping claw cylinder (827). The horizontal sliding seat (821) is slidably connected to the frame (1). The horizontal driver (822) is set on the frame (1) to drive the horizontal sliding seat (821). 21) slides in the horizontal direction, the vertical sliding seat (823) is slidably connected to the horizontal sliding seat (821), the vertical driver (824) is set on the frame (1) for driving the vertical sliding seat (823) to slide in the vertical direction, the first rotating cylinder (825) is connected to the vertical sliding seat (823), the main body of the second rotating cylinder (826) is connected to the rotating part of the first rotating cylinder (825), and the main body of the second clamping cylinder (827) is connected to the rotating part of the second rotating cylinder (826).

2. A blanking mechanism for hub assembly according to claim 1, characterized in that: The positioning hook (814) has an L-shaped appearance, and a semicircular positioning surface (8140) is provided at the position where the positioning hook (814) contacts the screw rod (902).

3. A blanking mechanism for hub assembly according to claim 1, characterized in that: A screw conveying line (83) for receiving the assembled screws (902) output by the screw transfer assembly (82) is provided on one side of the screw transfer assembly (82).

4. A screw assembly device for hub assembly, characterized in that: include: Rack (1); A turntable (2), the turntable (2) being arranged on a frame (1) and being rotatable relative to the frame (1), the turntable (2) being provided with a plurality of positioning fixtures (3), the frame (1) being provided with a round nut loading station (1001), a screw loading and tightening station (1002), a gasket loading station (1003), a square nut loading and tightening station (1004), and an unloading station (1005) in sequence along the rotation direction of the turntable (2); A round nut feeding mechanism (4), wherein the round nut feeding mechanism (4) is arranged on the round nut feeding station (1001) and is used to transfer the round nuts (901) one by one to the positioning fixture (3) moved to the round nut feeding station (1001); A screw feeding and tightening mechanism (5), wherein the screw feeding and tightening mechanism (5) is arranged at the screw feeding and tightening station (1002) and is used to assemble the screw (902) onto the round nut (901) on the positioning fixture (3) moved to the screw feeding and tightening station (1002); A gasket loading mechanism (6), the gasket loading mechanism (6) being arranged at the gasket loading station (1003) and being used for assembling the gasket (903) onto the screw (902) on the positioning fixture (3) moving to the gasket loading station (1003); A square nut loading and tightening mechanism (7), wherein the square nut loading and tightening mechanism (7) is arranged at the square nut loading and tightening station (1004) and is used to assemble the square nut (904) onto the screw (902) on the positioning fixture (3) moved to the square nut loading and tightening station (1004); And a blanking mechanism (8) as described in any one of claims 1 to 3, wherein the blanking mechanism (8) is arranged at a blanking station (1005) and is used to blank the screw (902) on the positioning fixture (3) moved to the blanking station (1005).

5. The screw assembly device for hub assembly according to claim 4, characterized in that: The positioning fixture (3) comprises: a screw positioning sleeve (31) for positioning the screw (902) and a round nut positioning mechanism (32) for positioning the round nut (901); the screw positioning sleeve (31) is arranged on the turntable (2); the round nut positioning mechanism (32) comprises: a positioning slider (321) and an elastic member (322); the positioning slider (321) is slidably connected to the turntable (2); one end of the positioning slider (321) is provided with a U-shaped bayonet (3210) capable of snapping into the round nut (901); the elastic member (322) is arranged between the turntable (2) and the positioning slider (321) to drive the U-shaped bayonet (3210) on the positioning slider (321) to maintain the positioning state of the round nut (901).

6. The screw assembly device for hub assembly according to claim 5, characterized in that: The frame (1) is provided with a nut releasing positioning assembly (33) at the round nut loading station (1001), the square nut loading and tightening station (1004), and the unloading station (1005), respectively, for releasing the positioning state of the round nut (901) by the U-shaped bayonet (3210) on the positioning slider (321). The nut releasing positioning assembly (33) comprises: a releasing hook (331) and a releasing cylinder (332) for driving the releasing hook (331). The positioning slider (321) is provided with a protrusion (333) that can cooperate with the releasing hook (331).

7. The screw assembly device for hub assembly according to claim 4, characterized in that: The round nut feeding mechanism (4) comprises: a round nut feeder (41), a round nut conveying guide rail (42) and a round nut transfer mechanism (43). The output end of the round nut feeder (41) is connected to the round nut conveying guide rail (42) and conveys the round nuts (901) to the round nut conveying guide rail (42). The round nut transfer mechanism (43) is arranged on the frame (1) and is used to transfer the round nuts (901) at the end of the round nut conveying guide rail (42) to the positioning fixture (3) that moves to the round nut feeding station (1001).

8. The screw assembly device for hub assembly according to claim 4, characterized in that: The screw feeding and tightening mechanism (5) comprises: a screw feeding assembly (51), a screw picking and flipping assembly (52) and a screw screwing assembly (53). The screw picking and flipping assembly (52) is arranged on the frame (1) and is used to clamp the screw (902) output by the screw feeding assembly (51), flip it into a vertical state, and then transfer it to the round nut (901) on the positioning fixture (3) of the screw feeding and tightening station (1002). The screw screwing assembly (53) is arranged on the frame (1) and is used to screw the screw (902) into the round nut (901).

9. The screw assembly device for hub assembly according to claim 4, characterized in that: The gasket feeding mechanism (6) comprises: a gasket feeding assembly (61) and a gasket transfer assembly (62), wherein the gasket transfer assembly (62) is arranged on the frame (1) and is used to transfer the gasket (903) output by the gasket feeding assembly (61) to the screw (902) on the positioning fixture (3) of the gasket feeding station (1003).

10. The screw assembly device for hub assembly according to claim 4, characterized in that: The square nut feeding and tightening mechanism (7) comprises: a square nut feeding assembly (71), a square nut transplanting and tightening assembly (72), wherein the square nut transplanting and tightening assembly (72) is arranged on the frame (1) and is used to assemble the square nuts (904) output by the square nut feeding assembly (71) onto the screw (902) on the positioning fixture (3) of the square nut feeding and tightening station (1004).

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