Device for assembling middle axle accessories of bicycle

Abstract

The utility model discloses a device for assembling bicycle center shaft accessories, which relates to the technical field of center shaft accessory processing and comprises a circular processing table arranged at the top of a processing table base, a movable rotary table arranged at the center of the top of the circular processing table, and a plurality of limiting slide rails distributed in an annular array at the top of the circular processing table and positioned on one side of the movable rotary table. A driving air cylinder is arranged at the end, away from the movable rotary table, of the limiting sliding rail, a sliding block is arranged at the executing end of the driving air cylinder and slidably connected to the outer wall of the top of the limiting sliding rail, a part containing end is arranged at the top of the sliding block, and a shaft shell containing pipe is arranged at the top of the movable rotary table; an electric telescopic rod is arranged at the top of the top table in a penetrating mode, and a top pressing assembly is arranged at the execution end of the electric telescopic rod. According to the utility model, a plurality of part placing ends are distributed in an annular array and are converged at the circle center of the movable turntable to form radial distribution; the assembling time is greatly saved, and the overall assembling efficiency is improved.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of bottom bracket component processing, specifically a device for assembling bicycle bottom bracket components. Background Technology

[0002] In the bicycle manufacturing industry, the bottom bracket, as a key component of the bicycle drivetrain, directly affects the bicycle's performance and riding experience through its assembly quality. Traditional bicycle bottom bracket assembly methods largely rely on manual operation, which has many drawbacks. During manual assembly, due to differences in operator skill levels and fatigue, it is difficult to guarantee the assembly precision and consistency of each bottom bracket component. For example, when assembling ball bearings, end caps, and locking rings into the bottom bracket housing, manual operation can easily lead to problems such as misalignment of parts and uneven tightening force, resulting in bottom bracket wobbling, abnormal noises, and other malfunctions during operation, reducing the bicycle's reliability and lifespan.

[0003] Moreover, manual assembly is inefficient and cannot meet the demands of large-scale production. As the bicycle market continues to expand, the requirements for the quantity and quality of bicycle bottom brackets are increasing, and traditional manual assembly has become a bottleneck restricting the development of the bicycle industry. Furthermore, manual assembly is labor-intensive, involves harsh working conditions, and can easily harm the health of operators.

[0004] Currently, although some highly automated assembly equipment exists on the market, these devices are often complex in structure, difficult to operate, and require professional technicians for maintenance and debugging. Furthermore, their versatility is poor, making it difficult to adapt to the assembly needs of different types and specifications of bicycle bottom brackets. At the same time, these devices are expensive, increasing production costs for companies and limiting their widespread application in the bicycle manufacturing industry.

[0005] In summary, improving assembly accuracy and consistency, increasing assembly efficiency, and enhancing equipment versatility are technical problems that urgently need to be solved by those skilled in this field. Utility Model Content

[0006] Based on this, the purpose of this utility model is to provide a device for assembling bicycle bottom bracket components, so as to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A device for assembling bicycle bottom bracket parts includes a processing table base, a circular processing table on the top of the processing table base, a movable turntable at the center of the top of the circular processing table, and multiple limiting slide rails arranged in a circular array on the top of the circular processing table and on one side of the movable turntable. A drive cylinder is provided at the end of each limiting slide rail away from the movable turntable. A slider is provided at the actuating end of the drive cylinder and slidably connected to the outer wall of the top of the limiting slide rail. A part placement end is provided at the top of the slider. A shaft housing placement tube is provided at the top of the movable turntable. A top platform is connected to the top of the circular processing table via a support rod. An electric lifting rod passes through the top of the top platform, and a pressing assembly is provided at the actuating end of the electric lifting rod.

[0009] Preferably, the inner cavity of the circular processing table is equipped with a servo motor, and the actuator of the servo motor is connected to the bottom of the movable turntable.

[0010] Preferably, the part placement end is composed of a connecting post at the top of the slider, a dome block on the side wall of the connecting post near one end of the shaft housing placement tube, a cylindrical body at the other end of the dome block, and a spring sheet on the outer wall of the cylindrical body.

[0011] Preferably, the top of the shaft housing tube is provided with a through hole.

[0012] Preferably, the pressing assembly includes a sleeve at the actuator end of the electric telescopic rod, and a push rod rotatably connected to the inner wall of the bottom of the sleeve.

[0013] Preferably, the push rod is located above the top of the shaft housing tube, the push rod is correspondingly arranged with the through hole, and the outer wall of the push rod is slidably connected to the inner wall of the through hole.

[0014] Preferably, the placement ends of the multiple parts converge at the center of the movable turntable, forming a radial distribution.

[0015] In summary, this technical solution has the following main advantages:

[0016] In this invention, multiple parts placement ends in the device are arranged in a circular array and converge at the center of the movable turntable, forming a radial distribution. During assembly, the movable turntable can rotate to align the parts on each placement end with the shaft housing in sequence, eliminating the need for frequent manual movement of parts, greatly saving assembly time and improving overall assembly efficiency.

[0017] The drive cylinder can move the slider on the limit slide rail to adjust the position of the part placement end; the servo motor can control the rotation angle of the movable turntable; these adjustable structures enable the device to adapt to the assembly needs of central shaft parts of different sizes and shapes, thus improving the adaptability of the device. Attached Figure Description

[0018] Figure 1 This is an isometric view of the overall structure of this utility model;

[0019] Figure 2 This is an isometric view of the top structure of the circular machining table of this utility model;

[0020] Figure 3 This is an isometric view of the movable turntable and shaft housing placement tube structure of this utility model;

[0021] Figure 4 This is an isometric drawing of the specific structure of the electric telescopic rod and the top pressing assembly of this utility model;

[0022] Figure 5 This is an isometric drawing of the specific structure of the part placement end of this utility model.

[0023] Figure descriptions: 10. Machining table base; 11. Circular machining table; 12. Movable turntable; 13. Limiting slide rail; 14. Drive cylinder; 15. Slider; 16. Part placement end; 161. Connecting post; 162. Dome block; 163. Circular tube; 164. Spring plate; 17. Shaft housing placement tube; 171. Through hole; 18. Top platform; 19. Electric lifting rod; 20. Top pressure assembly; 201. Sleeve; 202. Top rod. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Example

[0026] like Figures 1 to 5 As shown, a device for assembling bicycle bottom bracket parts includes a processing table base 10, a circular processing table 11 on the top of the processing table base 10, a movable turntable 12 at the center of the top of the circular processing table 11, a plurality of limiting slide rails 13 arranged in a ring array on the top of the circular processing table 11 and on one side of the movable turntable 12, a drive cylinder 14 is provided at the end of the limiting slide rail 13 away from the movable turntable 12, a slider 15 is provided at the actuating end of the drive cylinder 14 and slidably connected to the top outer wall of the limiting slide rail 13, a part placement end 16 is provided at the top of the slider 15, a shaft housing placement tube 17 is provided at the top of the movable turntable 12, a top platform 18 is connected to the top of the circular processing table 11 through a support rod, an electric lifting rod 19 is provided at the top of the top platform 18, and a pressing assembly 20 is provided at the actuating end of the electric lifting rod 19.

[0027] The inner cavity of the circular processing table 11 is equipped with a servo motor, and the actuator of the servo motor is connected to the bottom of the movable turntable 12.

[0028] The part placement end 16 is composed of a connecting post 161 on the top of the slider 15, a dome block 162 on the side wall of the connecting post 161 near the shaft housing placement tube 17, a cylindrical body 163 on the other end of the dome block 162, and a spring sheet 164 on the outer wall of the cylindrical body 163.

[0029] A through hole 171 is provided at the top of the shaft housing tube 17.

[0030] The top pressing assembly 20 includes a sleeve 201 at the actuating end of an electric telescopic rod 19, and a top rod 202 rotatably connected to the inner wall of the bottom of the sleeve 201.

[0031] The push rod 202 is located above the top of the shaft housing placement tube 17. The push rod 202 is correspondingly set with the through hole 171, and the outer wall of the push rod 202 is slidably connected to the inner wall of the through hole 171.

[0032] Multiple component placement ends 16 converge at the center of the movable turntable 12, forming a radial distribution.

[0033] It should be noted that in this embodiment, the processing table base 10 serves as the supporting foundation for the entire device, and a circular processing table 11 is mounted on its top. A movable turntable 12 is provided at the center of the top of the circular processing table 11. The movable turntable 12 can rotate on the circular processing table 11 to adjust the position of the central shaft component during assembly. The turntable surface is provided with a T-slot to facilitate the installation of the shaft housing placement tube 17 and other positioning fixtures.

[0034] Multiple limiting slide rails 13 are arranged in a ring array on the top of the circular processing table 11 and on one side of the movable turntable 12. The limiting slide rails 13 provide guidance for the sliding of the slider 15.

[0035] A drive cylinder 14 is installed at the end of the limit slide rail 13 away from the movable turntable 12. The actuator of the drive cylinder 14 is slidably connected to the slider 15, which is slidably connected to the top outer wall of the limit slide rail 13. The drive cylinder 14 has a stroke of 50mm and the synchronous / asynchronous movement of the slider 15 is achieved by PLC control. Through the extension and retraction of the drive cylinder 14, the slider 15 can be driven to slide on the limit slide rail 13, thereby adjusting the position of the part placement end 16.

[0036] The top of the slider 15 is provided with a parts placement end 16 for placing various parts of the bicycle bottom bracket, such as ball bearings, end caps, and locking rings; the top of the movable turntable 12 is provided with a shaft housing placement tube 17 for placing the shaft housing of the bicycle bottom bracket; the top of the circular processing table 11 is connected to a top platform 18 via a support rod, and an electric lifting rod 19 is installed on the top of the top platform 18. The actuator end of the electric lifting rod 19 is provided with a pressing component 20 for limiting and pressing the shaft housing during the assembly process.

[0037] The drive structure of the movable turntable 12 is described in detail. For example... Figure 2 As shown, a servo motor is installed inside the circular machining table 11, and the actuator of the servo motor is connected to the bottom of the movable turntable 12. After receiving a pulse signal, the servo motor's driver controls the three-phase electricity of the motor to form an electromagnetic field according to the frequency and number of pulses, thereby causing the rotor of the motor to rotate. At the same time, the encoder built into the servo motor feeds back the rotor's position signal to the driver in real time. The driver compares the feedback value with the target value. In this embodiment, the target value is 90° rotation each time, and the rotor rotation angle is precisely adjusted through a negative feedback PID control system to ensure that the motor can accurately reach the specified position. The rotation angle of the movable turntable 12 can be precisely controlled, thereby facilitating the alignment and assembly of the shaft housing in the shaft housing placement tube 17 with the parts on the various parts placement ends 16.

[0038] like Figure 5 As shown, the part placement end 16 is composed of a connecting post 161 on the top of the slider 15, a dome block 162 on the side wall of the connecting post 161 near the shaft housing placement tube 17, a cylindrical body 163 on the other end of the dome block 162, and a spring sheet 164 on the outer wall of the cylindrical body 163.

[0039] The cylindrical body 163 is used to avoid the protruding ends of the bicycle bottom bracket shaft during assembly, so that other parts of the bottom bracket, such as ball bearings, end caps, locking rings, etc., can be successfully assembled into the inner cavity of the bottom bracket housing; the spring plate 164 has a certain elasticity and can play a certain role in flexible clamping and positioning of the bottom bracket parts during the assembly process, improving the accuracy and stability of the assembly.

[0040] like Figures 3 to 4 As shown, the top of the shaft housing tube 17 is provided with a through hole 171; the top pressing assembly 20 includes a sleeve 201 at the actuating end of the electric telescopic rod 19, and a top rod 202 rotatably connected to the inner wall of the bottom of the sleeve 201.

[0041] The push rod 202 is located above the top of the shaft housing placement tube 17. The push rod 202 is correspondingly set with the through hole 171, and the outer wall of the push rod 202 is slidably connected with the inner wall of the through hole 171. During the assembly process, the electric lifting rod 19 pushes the sleeve 201 downward, so that the push rod 202 is inserted into the through hole 171 at the top of the shaft housing placement tube 17, which limits and presses the shaft housing placed on the inner wall of the shaft housing placement tube 17, ensuring the stability of the shaft housing during the assembly process and improving the assembly quality.

[0042] like Figure 2As shown, multiple part placement ends 16 converge at the center of the movable turntable 12, forming a radial distribution. This distribution ensures that the distance from each part placement end 16 to the center of the movable turntable 12 is equal. When the movable turntable 12 rotates, the parts on each part placement end 16 can be easily aligned and assembled with the shaft housing inside the shaft housing placement tube 17, improving assembly efficiency.

[0043] The working principle of this utility model is as follows:

[0044] Material feeding stage: Drive cylinder 14 drives slider 15 to the farthest end, and manually puts the central shaft housing containing pre-installed balls into shaft housing placement tube 17. Bearing end caps, locking rings and other accessories are respectively installed into the round tube 163 of each part placement end 16.

[0045] Mold closing stage: The servo motor drives the turntable 12 to rotate to the assembly station, and the drive cylinder 14 synchronously pushes the slider 15 to move towards the center, and the part placement end 16 forms a radial array; at the same time, the electric lifting rod 19 drives the ejector rod 202 to press down, and applies constant pressure to the shaft housing through the through hole 171. With the rotation of the movable turntable 12, the end cover and bearing are pressed together.

[0046] Release phase: Lifting rod 19 resets, drive cylinder 14 retracts, and the assembled central shaft assembly is removed.

[0047] The above embodiments are only for illustrating the technical concept of this utility model and should not be used to limit the protection scope of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the protection scope of this utility model.

Claims

1. A device for assembling a bicycle hub assembly, comprising a machining table base (10), characterized in that The processing table base (10) is provided with a circular processing table (11) on top. A movable turntable (12) is provided at the center of the top of the circular processing table (11). Multiple limiting slide rails (13) are arranged in a ring array on the top of the circular processing table (11) and on one side of the movable turntable (12). A driving cylinder (14) is provided at the end of the limiting slide rail (13) away from the movable turntable (12). A slider (15) is provided on the actuating end of the driving cylinder (14) and slidably connected to the outer wall of the top of the limiting slide rail (13). A part placement end (16) is provided on the top of the slider (15). A shaft housing placement tube (17) is provided on the top of the movable turntable (12). A top platform (18) is connected to the top of the circular processing table (11) through a support rod. An electric lifting rod (19) is provided on the top of the top platform (18). A pressing assembly (20) is provided on the actuating end of the electric lifting rod (19).

2. A device for assembling a bicycle spindle assembly as defined in claim 1, wherein, The inner cavity of the circular processing table (11) is equipped with a servo motor, and the execution end of the servo motor is connected to the bottom of the movable turntable (12).

3. A device for assembling a bicycle spindle assembly as defined in claim 1, wherein, The part placement end (16) is composed of a connecting post (161) on the top of the slider (15), a dome block (162) on the side wall of the connecting post (161) near the shaft housing placement tube (17), a cylindrical body (163) on the other end of the dome block (162), and a spring plate (164) on the outer wall of the cylindrical body (163).

4. The assembly device for a bicycle spindle assembly of claim 1, wherein, The top of the housing tube (17) of the shaft housing is provided with a through hole (171).

5. An assembly device for a bicycle spindle assembly as defined in claim 4, wherein, The top pressing assembly (20) includes a sleeve (201) at the actuating end of the electric telescopic rod (19) and a top rod (202) rotatably connected to the inner wall of the bottom of the sleeve (201).

6. An assembly device for a bicycle spindle assembly as defined in claim 5, wherein, The push rod (202) is located above the top of the shaft housing placement tube (17). The push rod (202) is correspondingly arranged with the through hole (171). The outer wall of the push rod (202) is slidably connected to the inner wall of the through hole (171).

7. A device for assembling a bicycle spindle assembly as defined in claim 1, wherein, Multiple parts placement ends (16) converge at the center of the movable turntable (12) to form a radial distribution.

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