Bicycle accessory assembly apparatus

Abstract

The utility model provides a kind of bicycle accessory assembling equipment, including rack and be set on the rotating disc mechanism of rack, nut feeding mechanism, first clamping mechanism, second clamping mechanism and nut tightening mechanism;Rotating disc mechanism in carousel is uniformly distributed with several assembly stations along circumference;Each assembly station is provided with a support carrier;Support carrier is used to hold flower drum assembly, nut feeding mechanism is located at one station of carousel, first clamping mechanism and second clamping mechanism are oppositely set on the both sides of support carrier, nut tightening mechanism is used to transfer nut to be grabbed to flower drum assembly, and nut is tightened to the axle of flower drum assembly.The utility model has the advantages that the equipment is replaced traditional manual two-hand wrench operating mode by rotating disc mechanism cooperation nut feeding mechanism, double clamping, nut tightening mechanism's synergic action, and greatly improves assembly efficiency and assembly quality.

Description

Technical Field

[0001] This utility model relates to the field of bicycle parts manufacturing technology, and more specifically, to a bicycle parts assembly equipment. Background Technology

[0002] In the bicycle manufacturing process, the hub assembly is a relatively important component. The existing bicycle hub assembly includes the hub, axle, positioning bushings, and nuts. The axle is axially inserted through the center of the hub. Both ends of the axle are pre-positioned onto the axle by the positioning bushings, and then locked onto the positioning bushings of the axle by the nuts. Finally, the nuts at both ends press against the positioning bushings on both sides, allowing the hub to rotate freely around the axle.

[0003] In the current production and assembly process of bicycle hub components, the nuts are tightened onto the axle manually using a wrench. The general steps are as follows: first, the hub with preloaded parts on both ends is placed on the carrier; one wrench is used to clamp the preloaded part at one end, and the other wrench is used to tighten the nut on the axle. Both wrenches are operated simultaneously until the nut is tightened onto the preloaded part.

[0004] The aforementioned manual operation method is not only highly repetitive and slow-paced, but also relies entirely on human experience to judge the tightness, lacking reliable quantitative standards. Due to the instability of manual operation, preloaded parts are often not fully tightened or over-tightened, resulting in hub rotation problems or axial play, affecting overall vehicle performance and service life. In addition, the single-person, single-machine operation mode limits production capacity, making it difficult to adapt to mass production needs, leading to high rework rates and increasing production costs and management burden. Utility Model Content

[0005] The present invention addresses the technical problem that existing bicycle hub assemblies are assembled manually, which is not only repetitive and tedious with low efficiency, but also cannot guarantee the tightening quality. To overcome the above-mentioned defects of the prior art, the present invention provides a fully automated operation of the hub assembly nut tightening process through the coordinated action of a rotary disc mechanism, a nut feeding mechanism, a first clamping mechanism, a second clamping mechanism, and a nut tightening mechanism, which can effectively improve production efficiency and product consistency.

[0006] To achieve the purpose of this utility model, the following technical solution is adopted: A bicycle parts assembly device includes a frame, and a rotary disc mechanism, a nut feeding mechanism, a first clamping mechanism, a second clamping mechanism, and a nut tightening mechanism mounted on the frame. The rotary disc mechanism has several assembly stations evenly distributed circumferentially on its turntable. Each assembly station has a support carrier. The support carrier holds hub assemblies and positions the hub assembly's shaft vertically. The nut feeding mechanism is located at one of the turntable's stations and feeds nuts one by one from a nut vibratory feeder to its designated waiting area. The first and second clamping mechanisms are positioned opposite each other on either side of the support carrier and clamp the positioning bushing at the top of the hub assembly during assembly to prevent rotation. The nut tightening mechanism picks up the nuts from the waiting area and transfers them to the hub assembly, tightening them onto the hub assembly's shaft using a nut tightener. This equipment, through its multi-station design of a rotary disc mechanism, combined with the coordinated actions of a nut feeding mechanism, double clamping, and nut tightening mechanism, replaces the traditional manual operation mode of holding a wrench with both hands, significantly improving assembly efficiency and adapting to the needs of mass production.

[0007] Preferably, the top surface of the support carrier is provided with a mounting groove that matches the outer circle of the hub in the hub assembly; the center of the bottom of the mounting groove is provided with a positioning plate groove that matches the outer circle of the positioning plate on the hub; the center of the bottom of the positioning plate groove is provided with a positioning sleeve groove that matches the outer circle of the positioning bushing, and the positioning sleeve groove is hexagonal; the bottom of the mounting groove is provided with at least two positioning pins along the circumferential direction that are positioned and engaged with the through holes on the end face of the hub. This multi-positioning structure ensures that the hub assembly is fixed in position during assembly, preventing displacement. The positioning bushing further limits the position through the hexagonal positioning sleeve groove, working in conjunction with the clamping mechanism to completely eliminate rotation or displacement of the hub assembly during assembly, providing a stable foundation for precise nut tightening and improving product consistency.

[0008] Preferably, the nut feeding mechanism includes a feeding bracket and a feeding cylinder connected to the discharge end of the nut vibratory feeder. The feeding bracket has a waiting trough that connects to the discharge end of the nut vibratory feeder, serving as the waiting area for the nut feeding mechanism. The waiting trough can only hold one nut at a time. A top-feeding hole is provided through the bottom of the waiting trough. The feeding cylinder is mounted on the feeding bracket and located below the waiting trough. The top of the telescopic rod of the feeding cylinder passes through the top-feeding hole to lift the nut from the waiting trough. By allowing only one nut to be held at a time in the waiting trough, the mechanism ensures that nuts are fed one by one, avoiding stacking and jamming. This, combined with the nut vibratory feeder, enables continuous feeding and ensures the continuity of the production line operation.

[0009] Preferably, the first clamping mechanism includes a first clamping bracket, a first cylinder, a first cylinder connecting plate, and a first clamping plate. The first clamping bracket is mounted on the frame, and the cylinder body of the first cylinder is horizontally mounted on the first clamping bracket. The telescopic rod of the first cylinder is fixedly connected to the first cylinder connecting plate, and the first clamping plate is fixedly connected to the side of the first cylinder connecting plate near the support carrier. The first clamping plate is horizontally positioned, and the side of the first clamping plate near the support carrier has a V-shaped bayonet that matches one side wall of the positioning bushing. The cylinder-driven clamping method provides rapid response, and the simple bracket and connecting plate structure facilitates installation and debugging. It can also adapt to the multi-station switching rhythm of the rotary table mechanism, improving the turnover efficiency of the production line.

[0010] Preferably, the second clamping mechanism includes a second clamping bracket, a second cylinder, a second cylinder connecting plate, and a second clamping plate. The second clamping bracket is mounted on the frame and located on the opposite side of the first clamping bracket. The cylinder body of the second cylinder is horizontally mounted on the second clamping bracket. The telescopic rod of the second cylinder is fixedly connected to the second cylinder connecting plate, and the second cylinder connecting plate is slidably connected to the second clamping bracket via a clamping slide rail. The second clamping plate is horizontally fixedly connected to the second cylinder connecting plate on the side near the support carrier. The second clamping plate is horizontally mounted, and a U-shaped bayonet matching the other side wall of the positioning bushing is provided on the side of the second clamping plate near the support carrier. By cooperating with the V-shaped bayonet of the first clamping mechanism, the U-shaped bayonet forms a stable clamp on the other side wall of the positioning bushing, achieving bidirectional positioning and omnidirectional fixation of the positioning bushing, completely eliminating rotation during assembly.

[0011] Preferably, the nut tightening mechanism includes a tightening bracket, a horizontal moving assembly, a lifting moving assembly, and the nut tightener. The lifting moving assembly is horizontally connected to the tightening bracket via the horizontal moving assembly. The nut tightener is vertically connected to the horizontal moving assembly via the lifting moving assembly, and its lower end is equipped with a tightening head for gripping the nut. Through the coordinated action of the horizontal moving assembly and the lifting moving assembly, the nut tightener can flexibly adjust its position, ensuring that after gripping the nut from the waiting area, it can be accurately transferred to the shaft locking position, achieving high positioning accuracy.

[0012] Preferably, the horizontal movement assembly includes a horizontal support platform, a horizontal drive cylinder, a horizontal drive slide plate, and a horizontal drive rail. The horizontal support platform is horizontally positioned on top of the tightening bracket, the cylinder body of the horizontal drive cylinder is horizontally positioned on the horizontal support platform, the telescopic rod of the horizontal drive cylinder is fixedly connected to the horizontal drive slide plate, and the horizontal drive slide plate moves horizontally on the horizontal support platform via the horizontal drive rail. The cooperation between the horizontal drive rail and the horizontal drive slide plate restricts the direction of horizontal movement, ensuring precise and controllable displacement of the nut tightener in the horizontal direction and avoiding positional deviations during gripping and tightening.

[0013] Preferably, the lifting and moving assembly includes a lifting drive cylinder, a lifting drive slide plate, and a lifting drive slide rail. The cylinder body of the lifting drive cylinder is vertically mounted on the horizontal drive slide plate, and the telescopic rod of the lifting drive cylinder is fixedly connected to the lifting drive slide plate. The lifting drive slide plate moves up and down on the horizontal drive slide plate via the lifting drive slide rail. The nut tightener is vertically mounted on the lifting drive slide plate. The sliding cooperation between the lifting drive slide rail and the lifting drive slide plate ensures that the nut tightener has a smooth trajectory and precise position during the lifting process, guaranteeing accurate alignment between the tightening head, shaft, and nut.

[0014] Preferably, the lower part of the tightening head is provided with a clamping mounting cavity; a first gripper plate and a second gripper plate are rotatably connected within the clamping mounting cavity, and the middle parts of the first gripper plate and the middle parts of the second gripper plate are hinged together, and the first gripper plate and the second gripper plate are arranged opposite each other. A spring is provided between the upper part of the first gripper plate and the upper part of the second gripper plate, and the lower parts of the first gripper plate and the lower parts of the second gripper plate are used to clamp the nut; a gripper plate positioning block is also provided within the clamping mounting cavity between the lower parts of the first gripper plate and the lower parts of the second gripper plate to prevent the gripper plate from closing too tightly. Through the hinge structure of the first gripper plate and the second gripper plate combined with the spring force, the nut can be stably clamped, and it can be automatically released after being locked in place, without the need for an additional drive mechanism, simplifying the operation process. The clamping structure of the lower part of the gripper plate is adapted to the outer circle of the nut, and the clamping force is adjusted by the spring elasticity to avoid excessive clamping that could cause deformation of the nut's edges or damage to the threads. The gripper plate positioning block prevents the gripper plate from closing too tightly, ensuring that the clamping gap is precisely matched with the nut size, preventing the nut from falling off or tilting during clamping, and ensuring the smooth progress of subsequent locking actions.

[0015] The advantages of this invention are: Multi-station assembly line operation is achieved through a rotary disc mechanism, combined with automatic nut feeding, clamping, and tightening, realizing full automation of hub assembly, greatly reducing manual intervention and labor intensity. The automated process replaces traditional manual operation, resulting in a fast production pace. Multiple stations can perform different processes simultaneously, significantly improving production efficiency and fully meeting the needs of mass production. The multi-positioning structure of the support carrier (installation slot, positioning disc slot, hexagonal positioning sleeve slot, positioning pin) ensures precise positioning and stability of the hub assembly during assembly. The first and second clamping mechanisms reliably clamp the positioning bushings from both sides, effectively preventing hub rotation during nut tightening and ensuring assembly stability. The nut tightening mechanism, through precise coordination of horizontal and lifting moving components, ensures accurate alignment of the nut and shaft, controllable tightening torque, and avoids problems of insufficient preload or over-tightening due to human factors, effectively improving product consistency and reliability and reducing rework rates. Attached Figure Description

[0016] Figure 1 is a structural schematic diagram of the bicycle parts assembly equipment of this utility model. Figure 2 is a structural schematic diagram of the support carrier and hub assembly of this utility model. Figure 3 is a structural schematic diagram of the nut feeding mechanism of this utility model. Figure 4 is a structural schematic diagram of the first clamping mechanism of this utility model. Figure 5 is a structural schematic diagram of the second clamping mechanism of this utility model. Figure 6 is a structural schematic diagram of the nut tightening mechanism of this utility model. Figure 7 is a cross-sectional view of the tightening head of this utility model. Explanation of reference numerals: 1. Rotary disk mechanism; 11. Turntable; 12. Support carrier; 121. Mounting slot; 122. Positioning disk slot; 123. Positioning sleeve slot; 124. Positioning pin; 2. Nut feeding mechanism; 20. Waiting area; 21. Nut vibratory plate; 22. Feeding bracket; 221. Waiting slot; 222. Top material hole; 23. Feeding cylinder; 3. First clamping mechanism; 31. First clamping bracket; 32. First cylinder; 33. First cylinder connecting plate; 34. First clamping plate; 341. V-shaped bayonet; 4. Second clamping mechanism; 41. Second clamping bracket; 42. Second cylinder; 43. Second cylinder connecting plate; 44. Second clamping plate; 441. U-shaped bayonet; 5. Nut tightening mechanism; 50. Tightening bracket; 51. Nut tightener; 511. Tightening head; 512. Clamping and mounting cavity; 513. First gripper plate; 514. Second gripper plate; 515. Spring; 516. Gripper plate positioning block; 52. Horizontal movement assembly; 521. Horizontal support platform; 522. Horizontal drive cylinder; 523. Horizontal drive slide plate; 524. Horizontal drive slide rail; 53. Lifting and moving assembly; 531. Lifting drive cylinder; 532. Lifting drive slide plate; 533. Lifting drive slide rail; 6. Hub assembly; 61. Hub; 611. Positioning plate; 612. Through hole; 62. Shaft; 63. Positioning bushing; 64. Nut. Detailed Implementation

[0017] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0018] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0019] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1 to 7 As shown, a bicycle parts assembly device includes a frame (not shown in the figure, but a conventional table), and a rotary disc mechanism 1, a nut feeding mechanism 2, a first clamping mechanism 3, a second clamping mechanism 4, and a nut tightening mechanism 5 mounted on the frame. The rotary disc mechanism 1 has eight assembly stations evenly distributed circumferentially on its turntable 11. Each assembly station is equipped with a support carrier 12. The support carrier 12 is used to vertically hold the hub assembly 6 and to vertically position the axle 62 on the hub assembly 6. The nut feeding mechanism 2 is located at one of the stations on the turntable 11. The nut feeding mechanism 2 is used to transport the nuts 64 one by one from the nut vibratory plate 21 to the waiting area 20 of the nut feeding mechanism 2. The first clamping mechanism 3 and the second clamping mechanism 4 are arranged opposite each other on both sides of the support carrier 12. The first clamping mechanism 3 and the second clamping mechanism 4 are used to clamp the positioning bushing 63 on the top of the hub assembly 6 during assembly to prevent the hub assembly 6 from rotating. The nut tightening mechanism 5 is used to grab and transfer the nuts 64 from the waiting area 20 to the hub assembly 6, and tighten the nuts 64 onto the shaft 62 of the hub assembly 6 through the nut tightener 51 in the nut tightening mechanism 5. This equipment, through the multi-station design of the rotary plate mechanism 1, and the coordinated action of the nut feeding mechanism 2, the double clamping mechanism, and the nut tightening mechanism 5, replaces the traditional manual operation mode of holding a wrench with both hands, greatly improving assembly efficiency and adapting to the needs of mass production. The first clamping mechanism 3 and the second clamping mechanism 4 mechanically clamp the positioning bushing 63 to prevent the shaft 62 from rotating. Combined with a dedicated nut tightener 51 (such as an electric screwdriver or servo tightening shaft) for locking, the tightening process is standardized, eliminating reliance on manual experience and effectively avoiding problems of insufficient or excessive tightening. This ensures that the hub 61 rotates smoothly without axial play. The vertically positioned bearing method of the shaft 62 facilitates precise connection between the feeding, gripping, and tightening actions of the nut 64, reducing interference between parts and improving the smoothness of the assembly process.

[0022] like Figure 1 and Figure 2As shown, the top surface of the support carrier 12 is provided with a mounting groove 121 that matches the outer circle of the hub 61 in the hub assembly 6 (circular); the center of the bottom of the mounting groove 121 is provided with a positioning plate groove 122 that matches the outer circle of the positioning plate 611 on the hub 61 (circular); the center of the bottom of the positioning plate groove 122 is provided with a positioning sleeve groove 123 that matches the outer circle of the positioning bushing 63, and the positioning sleeve groove 123 is hexagonal; the positioning bushing 63 is further limited by the hexagonal positioning sleeve groove 123, and works in conjunction with the clamping mechanism to completely prevent the hub assembly 6 from rotating or shifting during assembly, providing a stable foundation for the precise locking of the nut 64 and improving product consistency. The bottom of the mounting groove 121 is provided with two positioning pins 124 along the circumferential direction that are positioned and engaged with the through holes 612 on the end face of the hub 61, and the two positioning pins 124 are positioned opposite each other. This multi-positioning structure ensures that the hub assembly 6 is fixed in position during assembly, preventing displacement. Furthermore, the precise positioning structure prevents collisions or friction caused by misalignment of parts during assembly, reducing issues such as thread scratches and damage to the 64-corner edges of nuts, thus lowering the scrap rate.

[0023] like Figure 1 and Figure 3 As shown, the nut feeding mechanism 2 includes a feeding bracket 22 and a feeding cylinder 23 connected to the discharge end of the nut vibrating plate 21. The feeding bracket 22 is provided with a waiting trough 221 that connects to the discharge end of the nut vibrating plate 21, making the waiting trough 221 the waiting area 20 of the nut feeding mechanism 2. The waiting trough 221 can only hold one nut 64 at a time, ensuring that the nuts 64 are fed one by one, avoiding stacking and jamming. This, combined with the nut vibrating plate 21, enables continuous feeding and ensures the continuity of the assembly line operation. A top-feeding hole 222 is provided through the bottom of the waiting trough 221. The feeding cylinder 23 is mounted on the feeding bracket 22 and located below the waiting trough 221. The top of the telescopic rod of the feeding cylinder 23 passes through the top-feeding hole 222 to lift the nuts 64 in the waiting trough 221. The feeding cylinder 23 lifts the nut 64 through the top hole 222, freeing it from the constraint of the waiting groove 221. This allows the tightening head 511 of the nut tightening mechanism 5 to quickly and accurately grasp the nut, shortening the connection time between feeding and grasping and improving overall efficiency. The structured design of the feeding bracket 22 and the waiting groove 221 ensures the stability of the nut 64 during conveying and lifting, preventing it from tilting or falling and guaranteeing the smooth execution of subsequent tightening actions.

[0024] like Figure 1 and Figure 4As shown, the first clamping mechanism 3 includes a first clamping bracket 31, a first cylinder 32, a first cylinder connecting plate 33, and a first clamping plate 34. The first clamping bracket 31 is mounted on the frame. In this embodiment, the first clamping bracket 31 is a clamping and fixing connecting plate, and the clamping and fixing connecting plate is fixed on the nut tightening mechanism 5, which includes a tightening bracket 50. The clamping and fixing connecting plate is horizontally positioned, and the cylinder body of the first cylinder 32 is horizontally positioned on the bottom surface of the first clamping bracket 31. The telescopic rod of the first cylinder 32 is fixedly connected to the first cylinder connecting plate 33. Through the cylinder drive and rigid connection structure, a stable output of clamping force is achieved, avoiding the problem of uneven clamping force by manual clamping. At the same time, the horizontally positioned clamping plate ensures that the clamping direction is consistent with the force direction of the positioning bushing 63, preventing deformation of the positioning bushing 63. The first clamping plate 34 is fixedly connected to the first cylinder connecting plate 33 on the side near the support carrier 12. The first clamping plate 34 is horizontally oriented, and a V-shaped bayonet 341 matching one side wall of the positioning sleeve 63 is provided on the side of the first clamping plate 34 near the support carrier 12. The V-shaped bayonet 341 precisely fits against one side wall of the positioning sleeve 63. Utilizing the centering characteristic of the V-shaped structure, the position of the positioning sleeve 63 is automatically calibrated during clamping, ensuring the reliability of clamping. Overall, the first clamping mechanism 3, driven by a cylinder, offers rapid response. Combined with a simple bracket and connecting plate structure, it facilitates installation and debugging, and can adapt to the multi-station switching rhythm of the rotary table mechanism 1, improving the turnover efficiency of the production line.

[0025] like Figure 1 and Figure 5As shown, the second clamping mechanism 4 includes a second clamping bracket 41, a second cylinder 42, a second cylinder connecting plate 43, and a second clamping plate 44. The second clamping bracket 41 is mounted on the frame and located on the opposite side of the first clamping bracket 31. A clamping support platform is horizontally mounted on the top of the second clamping bracket 41, and the cylinder body of the second cylinder 42 is horizontally mounted on the clamping support platform. The telescopic rod of the second cylinder 42 is fixedly connected to the second cylinder connecting plate 43, and the second cylinder connecting plate 43 is slidably connected to the second clamping bracket 41 via a clamping slide rail. The sliding cooperation between the clamping slide rail and the second cylinder connecting plate 43 reduces the frictional resistance during clamping, ensuring smooth movement of the clamping plate and avoiding impact or scratches to the positioning sleeve 63. The second clamping plate 44 is horizontally fixedly connected to the second cylinder connecting plate 43 on the side near the support carrier 12. The second clamping plate 44 is horizontally mounted, and a U-shaped bayonet 441 matching the other side wall of the positioning sleeve 63 is provided on the side of the second clamping plate 44 near the support carrier 12. By engaging with the V-shaped bayonet 341 of the first clamping mechanism 3, the U-shaped bayonet 441 forms a stable clamp on the other side wall of the positioning bushing 63, achieving bidirectional positioning and omnidirectional fixation of the positioning bushing 63, completely eliminating rotation during assembly. Furthermore, the structural design of the U-shaped bayonet 441 adapts to the clamping requirements of positioning bushings 63 of different specifications. Combined with the V-shaped bayonet 341 of the first clamping mechanism 3, this improves the equipment's compatibility with various hub components 6 and reduces changeover costs.

[0026] like Figure 1 and Figure 6 As shown, the nut tightening mechanism 5 includes a tightening bracket 50, a horizontal moving component 52, a lifting moving component 53, and a nut tightener 51. The lifting moving component 53 is horizontally connected to the upper part of the tightening bracket 50 via the horizontal moving component 52. The nut tightener 51 is vertically connected to the horizontal moving component 52 via the lifting moving component 53. The nut tightener 51 is vertically positioned, and its lower end has a tightening head 511 for gripping the nut. Through the coordinated action of the horizontal moving component 52 and the lifting moving component 53, the nut tightener 51 is flexibly adjusted in position, ensuring that after gripping the nut 64 from the waiting area 20, it can be accurately transferred to the locking position on the shaft 62, achieving high positioning accuracy. The vertical positioning of the nut tightener 51 precisely matches the vertical layout of the shaft 62, ensuring that the tightening torque is transmitted axially along the shaft 62, improving the tightening effect and avoiding problems of insecure tightening caused by torque deviation. The tightening head 511 integrates gripping and locking functions, eliminating the need for an additional transfer mechanism, simplifying the "grip-transfer-lock" action chain, shortening the single assembly cycle, and improving efficiency.

[0027] like Figure 6As shown, the horizontal moving assembly 52 includes a horizontal support platform 521, a horizontal drive cylinder 522, a horizontal drive slide plate 523, and a horizontal drive rail 524. The horizontal support platform 521 is horizontally positioned on top of the tightening bracket 50. The cylinder body of the horizontal drive cylinder 522 is horizontally positioned on the horizontal support platform 521. The telescopic rod of the horizontal drive cylinder 522 is fixedly connected to the horizontal drive slide plate 523, and the horizontal drive slide plate 523 moves horizontally on the horizontal support platform 521 via the horizontal drive rail 524. The cooperation between the horizontal drive rail 524 and the horizontal drive slide plate 523 restricts the horizontal movement direction, ensuring precise and controllable displacement of the nut tightener 51 in the horizontal direction, avoiding positional deviations during gripping and tightening. The cylinder-driven method provides rapid response and can quickly complete horizontal position switching. Combined with the rigid horizontal support platform 521, it ensures no shaking during movement, providing a guarantee for precise gripping and tightening of the nut 64. The modular design of the horizontal moving assembly 52 ensures strong component versatility, facilitating later maintenance and replacement, and reducing equipment operation and maintenance costs.

[0028] like Figure 6 As shown, the lifting and moving assembly 53 includes a lifting drive cylinder 531, a lifting drive slide plate 532, and a lifting drive slide rail 533. The cylinder body of the lifting drive cylinder 531 is vertically mounted on the horizontal drive slide plate 523. The telescopic rod of the lifting drive cylinder 531 is fixedly connected to the lifting drive slide plate 532, and the lifting drive slide plate 532 moves up and down on the horizontal drive slide plate 523 via the lifting drive slide rail 533. The nut tightener 51 is vertically mounted on the lifting drive slide plate 532. The sliding cooperation between the lifting drive slide rail 533 and the lifting drive slide plate 532 ensures that the nut tightener 51 has a smooth trajectory and accurate position during the lifting process, ensuring precise docking of the tightening head 511 with the shaft 62 and the nut 64. The cylinder-driven lifting method allows for flexible adjustment of the stroke, adapting to the height of the shaft 62 of different specifications of hub assemblies 6, thus improving the compatibility of the equipment. The smoothness of the lifting process avoids additional impact force during locking, ensuring that the locking torque output by the nut tightener 51 is evenly transmitted to the nut 64, further improving the consistency of locking quality.

[0029] like Figure 6 and Figure 7As shown, a clamping and mounting cavity 512 is provided in the lower part of the tightening head 511. A first gripping plate 513 and a second gripping plate 514 are rotatably connected within the clamping and mounting cavity 512. The middle parts of the first gripping plate 513 and the second gripping plate 514 are hinged together, and the first gripping plate 513 and the second gripping plate 514 are arranged opposite each other. A spring 515 is provided between the upper parts of the first gripping plate 513 and the upper parts of the second gripping plate 514. The lower parts of the first gripping plate 513 and the lower parts of the second gripping plate 514 are used to clamp the nut 64. A gripping plate positioning block 516 is also provided in the clamping and mounting cavity 512 between the lower parts of the first gripping plate 513 and the lower parts of the second gripping plate 514 to prevent the gripping plates from closing tightly. Through the hinged structure of the first gripping plate 513 and the second gripping plate 514, combined with the elastic force of the spring 515, the nut 64 can be stably clamped, and it can be automatically released after being locked in place, without the need for an additional drive mechanism, simplifying the operation process. The clamping structure at the bottom of the gripper plate is adapted to the outer circle of the nut 64. The clamping force is elastically adjusted by the spring 515 to prevent excessive clamping that could deform the edges or damage the threads of the nut 64. The gripper plate positioning block 516 prevents the gripper plate from being over-tightened, ensuring that the clamping gap is precisely matched with the nut size, preventing the nut 64 from falling off or tilting during gripping, and ensuring the smooth progress of subsequent locking actions.

[0030] The working process of this equipment is as follows: Material loading stage: The robot arm vertically places the hub assembly 6 with the pre-installed positioning bushing 63 on the support carrier 12, the positioning pin 124 is inserted into the through hole 612, and the positioning bushing 63 is inserted into the positioning sleeve groove 123 to complete the hub positioning; the turntable 11 rotates to transport the work station to the nut loading mechanism 2.

[0031] Nut feeding: The nut vibratory plate 21 conveys the nuts 64 one by one to the waiting trough 221. The extension rod of the feeding cylinder 23 extends and lifts the nuts 64 to wait to be grabbed.

[0032] Clamping and positioning: The first cylinder 32 and the second cylinder 42 operate simultaneously, and the V-shaped bayonet 341 of the first clamping plate 34 and the U-shaped bayonet 441 of the second clamping plate 44 clamp the positioning bushing 63 to ensure that the hub assembly 6 is fixed and will not rotate.

[0033] Nut tightening: Horizontal drive cylinder 522 pushes horizontal drive slide plate 523 to move, so that tightening head 511 is directly above nut 64; lifting drive cylinder 531 drives lifting drive slide plate 532 to descend, and first gripper 513 and second gripper 514 clamp nut 64 under the action of spring 515; horizontal moving component 52 drives tightener to move directly above shaft 62, and lifting moving component 53 descends to make nut 64 threadedly engage with shaft 62; nut tightener 51 starts to tighten nut 64 to the set torque; after tightening, lifting moving component 53 rises, horizontal moving component 52 resets, first clamp 34 and second clamp 44 are released, and turntable 11 rotates to the next station to complete a single assembly.

[0034] This equipment achieves efficient and high-precision assembly of hub components 6 through automated mechanisms, increasing production efficiency by 3-5 times compared to manual assembly. The product qualification rate is increased from 85% for manual assembly to over 99.5%. It can be adapted to various specifications of hub components 6 to meet the needs of large-scale bicycle production.

[0035] In summary, the advantages of this utility model are: High degree of automation, replacing traditional manual double wrench operation: Through the multi-station flow of the rotary disc mechanism 1, in conjunction with the nut feeding, double clamping and tightening mechanism, the entire assembly process of the hub component 6 is automated, which greatly improves efficiency, is suitable for mass production, and reduces labor costs and fatigue.

[0036] Stable and precise assembly quality: The support carrier 12 provides multiple positioning to ensure that the hub does not deviate, the double clamping mechanism stabilizes and fixes the positioning bushing 63, and the nut tightener 51 provides standardized output torque to avoid improper tightening caused by human experience, ensuring that the hub 61 rotates smoothly without axial clearance and improving product consistency.

[0037] High adaptability and reliability: The nut feeding mechanism 2 provides orderly feeding and prevents jamming; the clamping mechanism's bayonet is adapted to the positioning bushing 63; the nut tightening mechanism 5 can be flexibly adjusted to adapt to different specifications of hub components 6; and the design of each structure reduces damage to parts, lowers the scrap rate and replacement cost.

[0038] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0039] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A bicycle parts assembly device, characterized in that, The system includes a frame, and a rotary disc mechanism (1), a nut feeding mechanism (2), a first clamping mechanism (3), a second clamping mechanism (4), and a nut tightening mechanism (5) mounted on the frame. The rotary disc mechanism (1) has several assembly stations evenly distributed circumferentially on its turntable (11). Each assembly station is equipped with a support carrier (12). The support carrier (12) is used to hold the hub assembly (6) and to vertically position the shaft (62) on the hub assembly (6). The nut feeding mechanism (2) is located at one of the stations on the turntable (11) and is used to feed the nut from the vibrating disc (21). Nuts (64) are fed one by one to the waiting area (20) of the nut feeding mechanism (2). The first clamping mechanism (3) and the second clamping mechanism (4) are arranged opposite to each other on both sides of the support carrier (12). The first clamping mechanism (3) and the second clamping mechanism (4) are used to clamp the positioning bushing (63) on the top of the hub assembly (6) during assembly to prevent the hub assembly (6) from rotating. The nut tightening mechanism (5) is used to grab and transfer the nuts (64) from the waiting area (20) to the hub assembly (6), and tighten the nuts (64) onto the shaft (62) of the hub assembly (6) through the nut tightener (51) in the nut tightening mechanism (5).

2. The bicycle parts assembly equipment according to claim 1, characterized in that, The top surface of the support carrier (12) is provided with a mounting groove (121) that matches the outer circle of the hub (61) in the hub assembly (6); the center of the bottom of the mounting groove (121) is provided with a positioning plate groove (122) that matches the outer circle of the positioning plate (611) on the hub (61); the center of the bottom of the positioning plate groove (122) is provided with a positioning sleeve groove (123) that matches the outer circle of the positioning bushing (63), and the positioning sleeve groove (123) is hexagonal; the bottom of the mounting groove (121) is provided with at least two positioning pins (124) that are positioned and engaged with the through holes (612) on the end face of the hub (61) along the circumferential direction.

3. The bicycle parts assembly equipment according to claim 1, characterized in that, The nut feeding mechanism (2) includes a feeding bracket (22) connected to the discharge end of the nut vibrating plate (21) and a feeding cylinder (23); the feeding bracket (22) is provided with a waiting groove (221) connected to the discharge end of the nut vibrating plate (21), and the waiting groove (221) becomes the waiting place (20) of the nut feeding mechanism (2), and the waiting groove (221) can only hold one nut; the bottom of the waiting groove (221) is provided with a top material hole (222); the feeding cylinder (23) is provided on the feeding bracket (22) and located below the waiting groove (221), and the top of the telescopic rod of the feeding cylinder (23) passes through the top material hole (222) to lift the nut (64) in the waiting groove (221).

4. The bicycle parts assembly equipment according to claim 1, characterized in that, The first clamping mechanism (3) includes a first clamping bracket (31), a first cylinder (32), a first cylinder connecting plate (33), and a first clamping plate (34); the first clamping bracket (31) is mounted on the frame, and the cylinder body of the first cylinder (32) is horizontally mounted on the first clamping bracket (31); the telescopic rod of the first cylinder (32) is fixedly connected to the first cylinder connecting plate (33), and the first clamping plate (34) is fixedly connected to the first cylinder connecting plate (33) on the side near the support carrier (12); the first clamping plate (34) is horizontally mounted, and the side of the first clamping plate (34) near the support carrier (12) is provided with a V-shaped bayonet (341) that matches one side wall of the positioning bushing (63).

5. The bicycle parts assembly equipment according to claim 1 or 4, characterized in that, The second clamping mechanism (4) includes a second clamping bracket (41), a second cylinder (42), a second cylinder connecting plate (43), and a second clamping plate (44); the second clamping bracket (41) is mounted on the frame and located on the opposite side of the first clamping bracket (31); the cylinder body of the second cylinder (42) is horizontally mounted on the second clamping bracket (41); the telescopic rod of the second cylinder (42) is fixedly connected to the second cylinder connecting plate (43), and the second cylinder connecting plate (43) is slidably connected to the second clamping bracket (41) via a clamping slide rail; the second clamping plate (44) is horizontally fixedly connected to the second cylinder connecting plate (43) on the side near the support carrier (12); the second clamping plate (44) is horizontally mounted, and the side of the second clamping plate (44) near the support carrier (12) is provided with a U-shaped bayonet (441) that matches the other side wall of the positioning bushing (63).

6. The bicycle parts assembly equipment according to claim 1, characterized in that, The nut tightening mechanism (5) includes a tightening bracket (50), a horizontal moving component (52), a lifting moving component (53), and the nut tightener (51). The lifting moving component (53) is horizontally connected to the tightening bracket (50) via the horizontal moving component (52). The nut tightener (51) is vertically connected to the horizontal moving component (52) via the lifting moving component (53). The nut tightener (51) is vertically arranged, and a tightening head (511) for gripping the nut is provided at the lower end of the nut tightener (51).

7. The bicycle parts assembly equipment according to claim 6, characterized in that, The horizontal moving assembly (52) includes a horizontal support platform (521), a horizontal drive cylinder (522), a horizontal drive slide plate (523), and a horizontal drive slide rail (524). The horizontal support platform (521) is horizontally positioned on top of the tightening bracket (50). The cylinder body of the horizontal drive cylinder (522) is horizontally positioned on the horizontal support platform (521). The telescopic rod of the horizontal drive cylinder (522) is fixedly connected to the horizontal drive slide plate (523), and the horizontal drive slide plate (523) moves horizontally on the horizontal support platform (521) via the horizontal drive slide rail (524).

8. The bicycle parts assembly equipment according to claim 7, characterized in that, The lifting and moving assembly (53) includes a lifting drive cylinder (531), a lifting drive slide plate (532), and a lifting drive slide rail (533); the cylinder body of the lifting drive cylinder (531) is vertically arranged on the horizontal drive slide plate (523), the telescopic rod of the lifting drive cylinder (531) is fixedly connected to the lifting drive slide plate (532), and the lifting drive slide plate (532) moves up and down on the horizontal drive slide plate (523) through the lifting drive slide rail (533); the nut tightener (51) is vertically arranged on the lifting drive slide plate (532).

9. The bicycle parts assembly equipment according to claim 6, characterized in that, The tightening head (511) has a clamping mounting cavity (512) in its lower part; a first gripping plate (513) and a second gripping plate (514) are rotatably connected in the clamping mounting cavity (512), and the middle part of the first gripping plate (513) and the middle part of the second gripping plate (514) are hinged together, and the first gripping plate (513) and the second gripping plate (514) are arranged opposite to each other. A spring (515) is provided between the upper part of the first gripping plate (513) and the upper part of the second gripping plate (514), and the lower part of the first gripping plate (513) and the lower part of the second gripping plate (514) are used to clamp the nut (64); a gripping plate positioning block (516) to prevent the gripping plates from closing is also provided in the clamping mounting cavity (512) between the lower part of the first gripping plate (513) and the lower part of the second gripping plate (514).

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