Rotary assembly mechanism and assembly method for heat dissipation fan

Abstract

The application relates to the technical field of heat dissipation fan production, in particular to a heat dissipation fan rotary assembling mechanism and method, which comprises a workbench, an assembling turntable, assembling jigs, a rotating shaft feeding assembly and a rotating shaft loading assembly. The assembling turntable is arranged on the workbench, the assembling jigs are arranged in multiple groups and are arranged on the assembling turntable, and the assembling turntable is used for driving the assembling turntable to sequentially pass through the rotating shaft feeding assembly and the rotating shaft loading assembly. During assembling, a pre-assembly positioning ring is matched with a pre-assembly positioning groove, a loading and jacking module is used for jacking the rotating shaft assembly from the bottom to the top to the fixed bottom shell of the assembling jig, at the moment, a loading and pressing module is used for pressing the fan body, so that one end of the rotating shaft is in interference fit with the connecting hole, and the other end of the fixed shaft sleeve is loaded into the rotating shaft fixing groove and is fixed. The application remarkably improves the production quality and efficiency of the heat dissipation fan through high-efficiency, accurate and stable assembling performance.

Description

Technical Field

[0001] This invention relates to the field of cooling fan manufacturing technology, and in particular to a rotary assembly mechanism and assembly method for cooling fans. Background Technology

[0002] As a key component for heat dissipation in electronic devices, the assembly quality of cooling fans directly affects their operating efficiency, noise level, and lifespan. Current cooling fan assembly methods are mostly manual or semi-automatic, which presents several problems. First, in the shaft assembly stage, the precision requirements for the fit between the shaft assembly and the fan body / base are extremely high. Manual operation makes it difficult to ensure the interference fit accuracy between the shaft and the connecting holes, easily leading to misalignment or misalignment, thus affecting the fan's dynamic balance and operational stability. Second, traditional assembly methods lack sufficient control over the fit precision of the pre-installed positioning ring and positioning slot, easily creating assembly gaps and affecting the overall fan performance. Furthermore, existing technologies lack effective height detection methods, making it impossible to monitor the assembly height of the fan body and base in real time, and failing to ensure the precise fit between the pre-installed positioning ring and positioning slot.

[0003] In terms of automated assembly equipment, existing assembly mechanisms are often complex in structure and cumbersome in operation, making it difficult to achieve efficient and precise shaft assembly. In particular, the lack of an effective clamping device for the fan body during shaft insertion easily leads to positional misalignment during assembly. Furthermore, existing equipment struggles to achieve precise positioning and directional control of the shaft assembly, resulting in low assembly efficiency and inconsistent product quality.

[0004] Therefore, there is an urgent need to develop a high-precision, high-efficiency, and automated assembly mechanism to solve the aforementioned problems in existing technologies. Summary of the Invention

[0005] To address the aforementioned problems, this invention significantly improves the production quality and efficiency of cooling fans through efficient, accurate, and stable assembly performance. Simultaneously, its excellent adaptability and flexibility provide strong support for enterprise production and development through its rotary assembly mechanism and method for cooling fans.

[0006] The technical solution adopted in this invention is: a rotary assembly mechanism for a cooling fan, the cooling fan including a base shell, a shaft assembly, a fan body, and a cover plate. A stator assembly is mounted on the base shell, and a pre-installed positioning groove is provided on the inner circumference of the stator assembly. The shaft assembly includes a fixed bushing, a shaft fixing component, and a rotating shaft. The shaft fixing component is disposed on the fixed bushing, and the rotating shaft is disposed on the shaft fixing component. A shaft fixing groove is provided on the base shell, and the fixed bushing is disposed on the shaft fixing groove. The fan body has a connecting cavity, a rotor magnetic ring is disposed in the connecting cavity, and a pre-installed positioning ring is disposed in the connecting cavity. The pre-installed positioning ring is used to cooperate with the pre-installed positioning groove. The rotor magnetic ring is opposite to the stator assembly. A connecting hole is provided at one end of the connecting cavity, and one end of the rotating shaft is interference-fitted with the connecting hole. The rotary assembly mechanism for the cooling fan includes a worktable, an assembly turntable, an assembly fixture, a shaft feeding assembly, and a shaft loading assembly. The assembly turntable is disposed on the worktable, and multiple sets of assembly fixtures are disposed on the assembly turntable. The turntable drives the assembly turntable sequentially through the shaft feeding assembly and the shaft loading assembly; the assembly fixture is used to fix the bottom shell; the shaft loading assembly includes a loading bracket, a loading lifting module, a loading pushing module, a loading upper arm, a loading lower arm, a loading clamping module, and a loading lifting module. The loading bracket is mounted on the worktable, the loading lifting module is mounted on the loading bracket, the loading pushing module is mounted on the loading lifting module, the loading upper arm and loading lower arm are both mounted on the loading pushing module, and the loading clamping module is... The upper arm is fitted with the lower arm, and the lower arm is fitted with the upper arm. The upper arm is fitted with the lower arm, and the upper arm is fitted with the upper arm. The upper arm is fitted with a lifting positioning groove for inserting the shaft assembly. During assembly, the pre-installed positioning ring cooperates with the pre-installed positioning groove. The upper arm is fitted with the upper arm and the shaft assembly is lifted from bottom to top onto the bottom shell fixed by the assembly fixture. At this time, the upper arm is fitted with the upper arm and the lower arm is fitted with the shaft fixing groove for fixation.

[0007] A further improvement to the above solution is that the bottom shell is provided with an assembly fastener, the rotating shaft fixing groove is provided on the assembly fastener, the rotating shaft fixing groove is provided with an assembly positioning surface, and the fixed bushing is provided with a positioning plane. During assembly, the assembly positioning surface and the positioning plane cooperate to position the assembly direction of the fixed bushing. The lifting positioning groove is provided with a flat position that cooperates with the positioning plane to position the direction during assembly.

[0008] A further improvement to the above solution is that the assembly fixture is used to fix the bottom shell. Before the assembly turntable drives the assembly fixture into the rotating shaft feeding assembly, the fan body is placed on the outer shell so that the pre-installed positioning ring of the fan shell matches the pre-installed positioning groove.

[0009] A further improvement to the above scheme is that the assembly turntable includes a divider, a turntable drive motor, and a rotating disk. The turntable drive motor is used to drive the divider to rotate the rotating disk. The upper surface of the rotating disk is provided with multiple fixed positions in a circumferential array, and the assembly fixture is set on the fixed positions.

[0010] A further improvement to the above solution is that the assembly fixture includes a fixture base, a product clamping module, and a fixture body. The fixture base is used to fix the fixture body, and the fixture body is provided with a product fixing position. Multiple positioning pins are provided on the outer periphery of the product fixing position to fix the product on the fixture base. The product clamping module is provided on the fixture base to fix the product.

[0011] A further improvement to the above solution is that a height-fixing pressing component is provided on one side of the rotating shaft feeding assembly. The height-fixing pressing component includes a height-fixing bracket, a height-fixing drive module, a height-fixing detection element, and a height-fixing detection plate. The height-fixing bracket is set on the workbench, the height-fixing drive module is set on the height-fixing bracket, the height-fixing detection element is set on the height-fixing drive module, and the height-fixing detection plate is set on the height-fixing detection element. The height-fixing drive module is used to drive the height-fixing detection element to bring the height-fixing detection plate into contact with the fan body, so as to ensure that the pre-installed positioning ring of the fan body is in place with the pre-installed positioning groove.

[0012] A further improvement to the above solution is that the rotating shaft feeding assembly includes a rotating shaft feeding rack, a rotating shaft feeding gantry, a rotating shaft feeding XYZ module, and a rotating shaft picking element. The rotating shaft feeding rack is set on the worktable, the rotating shaft feeding gantry is set on the worktable, the rotating shaft feeding XYZ module is set on the rotating shaft feeding gantry, and the rotating shaft picking element is set on the rotating shaft feeding XYZ module. The rotating shaft feeding XYZ module is used to drive the rotating shaft picking element to grab the rotating shaft assembly from the rotating shaft feeding rack and place it on the lifting positioning slot.

[0013] A further improvement to the above solution is that the loading and clamping module includes a clamping drive module and a clamping shaft, the clamping shaft being used to clamp one end of the fan body during assembly.

[0014] A further improvement to the above solution is that the loading lifting module includes a lifting drive module and an assembly positioning component, the lifting positioning groove is disposed on the assembly positioning component, and the lifting drive module is used to drive the assembly positioning component to assemble toward the bottom shell.

[0015] A method for assembling the shaft of a cooling fan, comprising the aforementioned rotary assembly mechanism for the cooling fan; The assembly method for the cooling fan shaft includes the following steps: Step S1, Pre-assembly: Place the bottom shell on the assembly fixture and fix it, then install the fan body into the bottom shell, and use the pre-installed positioning ring and the pre-installed positioning groove to achieve positioning between the fan body and the bottom shell. Step S2, Height Measurement: The assembly turntable drives the assembly fixture to rotate the bottom shell and the fan body. When it rotates to the next station, the assembly height between the fan body and the bottom shell is measured to confirm whether the pre-installed positioning ring and the pre-installed positioning slot are properly positioned. Step S3, Rotary shaft assembly loading: The assembly turntable drives the assembly fixture to rotate the bottom shell and fan body to the next station. At this time, the rotary shaft assembly is positioned and loaded by the rotary shaft loading mechanism, grabbed and placed on the lifting positioning groove, and then transferred to the bottom of the assembly fixture under the action of the loading lifting module and loading pushing module, and is opposite to the rotary shaft fixing groove of the bottom shell. Step S4, Shaft Assembly: Confirm that the lifting module and the clamping module are aligned. Then, use the lifting module to lift the shaft assembly from bottom to top onto the fixed base shell of the assembly fixture. At this time, use the clamping module to press the fan body so that one end of the rotating shaft is interference-fitted with the connecting hole, and the other end of the fixed shaft is fitted into the shaft fixing groove for fixation, thus completing the shaft assembly.

[0016] The beneficial effects of this invention are: Compared to existing cooling fan shaft assembly methods, this invention introduces an automated process, including modules such as an assembly turntable, shaft loading components, and shaft insertion components, achieving efficient and continuous assembly of cooling fans from components to finished products. The assembly turntable design allows multiple assembly fixtures to sequentially pass through each assembly station, effectively reducing manual handling and waiting time, and significantly improving production efficiency. Secondly, in the shaft insertion stage, the coordinated operation of the lifting module, the pushing module, the upper arm, and the lower arm ensures precise positioning and stable assembly of the shaft assembly. In particular, the relative arrangement of the lifting module and the clamping module ensures the stability and accuracy of the shaft assembly during assembly. The design of the lifting positioning groove provides a precise placement position for the shaft assembly, avoiding misalignment and deviation during assembly. Furthermore, the cooperation between the pre-installed positioning ring and the pre-installed positioning groove provides strong support for the initial positioning of the fan body and the base shell. This design not only simplifies the assembly process but also improves the accuracy and reliability of assembly. Meanwhile, the interference fit between the rotating shaft and the connecting hole, as well as the fixation between the fixed bushing and the rotating shaft fixing groove, further enhance the overall structural strength and stability of the cooling fan. Furthermore, this assembly mechanism exhibits excellent adaptability and flexibility. By adjusting the assembly fixture and assembly process, it can easily adapt to the assembly needs of different models and specifications of cooling fans, reducing production costs and cycle time. This invention significantly improves the production quality and efficiency of cooling fans through efficient, accurate, and stable assembly performance. At the same time, its excellent adaptability and flexibility provide strong support for the production and development of enterprises.

[0017] The assembly method for the cooling fan's shaft involves a pre-assembly step (step S1) that utilizes the cooperation between the pre-installed positioning ring and the pre-installed positioning slot to ensure accurate positioning between the fan body and the base shell. This step effectively avoids misalignment problems during subsequent assembly, improving assembly efficiency and product quality. Simultaneously, pre-assembly makes the assembly relationship between the fan body and the base shell more stable, providing strong support for subsequent steps. Secondly, the height detection step (step S2) uses the assembly turntable to drive the assembly fixture to rotate, achieving precise detection of the assembly height between the fan body and the base shell. This step can promptly identify any misalignment issues between the pre-installed positioning ring and the pre-installed positioning slot, thus avoiding quality risks caused by improper assembly height. Furthermore, height detection provides accurate reference for the subsequent loading and assembly of the shaft assembly. Finally, the shaft assembly loading step (step S3) achieves automatic loading and precise positioning of the shaft assembly through the coordinated action of the shaft loading mechanism, the lifting module, and the propulsion module. This step not only improves assembly efficiency but also reduces the difficulty and error of manual operation, allowing the shaft assembly to be accurately and quickly placed under the assembly fixture and aligned with the shaft fixing slot on the bottom shell. Finally, the shaft assembly step (step S4) achieves precise assembly of the shaft assembly through the combined action of installing the lifting module and the clamping module. During this process, one end of the rotating shaft is interference-fitted with the connecting hole, while the other end of the fixed shaft is fitted into the shaft fixing slot for fixation, thus ensuring the stability and reliability of the shaft assembly. Simultaneously, installing the clamping module also presses the fan body into place, further enhancing the stability of the assembled structure. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the cooling fan of the present invention; Figure 2 for Figure 1 An exploded diagram of the cooling fan; Figure 3 for Figure 1 A schematic diagram of the shaft assembly of the cooling fan; Figure 4 for Figure 1 A schematic diagram of the assembly process for the cooling fan; Figure 5 This is a three-dimensional schematic diagram of the rotary assembly mechanism for the cooling fan of the present invention; Figure 6 for Figure 5 A three-dimensional schematic diagram of the rotating assembly mechanism for the cooling fan from another perspective; Figure 7 for Figure 5 A schematic diagram of the assembly turntable of the rotary assembly mechanism for the cooling fan; Figure 8 for Figure 5A schematic diagram of the rotating shaft feeding assembly of the central cooling fan rotary assembly mechanism; Figure 9 for Figure 5 A schematic diagram of the fixed-height pressing component of the rotary assembly mechanism for the cooling fan; Figure 10 for Figure 5 A schematic diagram of the structure of the rotating assembly mechanism for the cooling fan, showing the shaft being inserted into the assembly. Figure 11 This is a schematic flowchart of the shaft assembly method for the cooling fan of the present invention.

[0019] Explanation of reference numerals in the attached drawings: bottom shell 10, shaft fixing groove 101, assembly fixing part 102, assembly positioning surface 103, shaft assembly 20, fixing bushing 201, positioning plane 2011, shaft fixing part 202, rotating shaft 203, fan body 30, rotor magnetic ring 301, pre-installed positioning ring 302, connecting hole 303, cover plate 40, stator assembly 50, pre-installed positioning groove 501; 1. Workbench; 2. Assembly turntable; 3. Divider; 4. Turntable drive motor; 5. Rotating disc; 6. Assembly fixture; 7. Fixture base; 8. Product clamping module; 9. Fixture body; 10. Product fixing position; 11. Positioning pin; 12. Rotary shaft feeding assembly; 13. Rotary shaft feeding rack; 14. Rotary shaft feeding gantry; 15. Rotary shaft feeding XYZ module; 16. Rotary shaft picking element; 17. Rotary shaft loading assembly; 18. Loading bracket. 1. Install lifting module 52. Install propulsion module 53. Install upper arm 54. Install lower arm 55. Install clamping module 56. Install clamping drive module 561. Clamping shaft 562. Install lifting module 57. Lifting positioning groove 571. Lifting drive module 572. Assemble positioning component 573. Height-fixing pressing component 6. Height-fixing bracket 61. Height-fixing drive module 62. Height-fixing detection element 63. Height-fixing detection plate 64. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] like Figures 1-4 As shown, in one embodiment of the present invention, a cooling fan is provided, including a base shell 10, a shaft assembly 20, a fan body 30, and a cover plate 40. The cover plate 40 is fastened to the base shell 10. A stator assembly 50 is mounted on the base shell 10. A pre-installed positioning groove 501 is provided on the inner circumference of the stator assembly 50. The shaft assembly 20 includes a fixed shaft sleeve 201, a shaft fixing member 202, and a rotating shaft 203. The shaft fixing member 202 is disposed on the fixed shaft sleeve 201, and the rotating shaft 203 is disposed on the shaft fixing member. On the bottom shell 10, a rotating shaft fixing groove 101 is provided, and a fixing bushing 201 is disposed on the rotating shaft fixing groove 101. The fan body 30 is provided with a connecting cavity, and a rotor magnetic ring 301 and a pre-installed positioning ring 302 are provided in the connecting cavity. The pre-installed positioning ring 302 is used to cooperate with the pre-installed positioning groove 501. The rotor magnetic ring 301 is opposite to the stator assembly 50. One end of the connecting cavity is provided with a connecting hole 303, and one end of the rotating shaft 203 is interference-fitted with the connecting hole 303. In this embodiment, by matching the stator assembly 50 installed on the bottom shell 10 and the pre-installed positioning groove 501 on its inner circumference with the pre-installed positioning ring 302 in the connecting cavity of the fan body 30, the precise positioning of the fan assembly during the installation process is achieved. This pre-installed positioning mechanism not only simplifies the assembly process and improves production efficiency, but also ensures the coaxiality and stability between the various components of the fan, thereby optimizing heat dissipation efficiency and operational stability. Secondly, the ingenious design of the shaft assembly 20—including the integration of the fixed shaft sleeve 201, the shaft fixing component 202, and the rotating shaft 203—further enhances the stability of the fan structure. The fixed shaft sleeve 201 is precisely embedded in the shaft fixing groove 101 of the bottom shell 10, providing a solid support foundation for the rotating shaft 203. The interference fit between the rotating shaft 203 and the connecting hole 303 of the fan body 30 effectively prevents axial movement, ensuring the dynamic balance and low noise performance of the fan at high speeds. Furthermore, the relative arrangement of the rotor magnetic ring 301 and the stator assembly 50 inside the fan body 30 constitutes a highly efficient electromagnetic drive system. This design not only improves energy conversion efficiency, enabling the fan to achieve higher speed and airflow output with lower energy consumption, but also achieves flexible adjustment of the fan speed through precise magnetic field control, meeting the heat dissipation needs of different application scenarios.

[0024] like Figures 1-10As shown, a rotary assembly mechanism for a cooling fan includes a worktable 1, an assembly turntable 2, an assembly fixture 3, a shaft feeding assembly 4, and a shaft loading assembly 5. The assembly turntable 2 is mounted on the worktable 1. Multiple sets of assembly fixtures 3 are mounted on the assembly turntable 2. The assembly turntable 2 is used to drive the assembly turntable 2 to pass sequentially through the shaft feeding assembly 4 and the shaft loading assembly 5. The assembly fixture 3 is used to fix the bottom shell 10. The shaft loading assembly 5 includes a loading bracket 51, a loading lifting module 52, a loading pushing module 53, a loading upper arm 54, a loading lower arm 55, a loading clamping module 56, and a loading lifting module 57. The loading bracket 51 is mounted on the worktable 1, the loading lifting module 52 is mounted on the loading bracket 51, and the loading pushing module 53 is mounted on the loading lifting module. On 52, the upper arm 54 and the lower arm 55 are both mounted on the mounting and pushing module 53, the mounting and pressing module 56 is mounted on the upper arm 54, and the mounting and lifting module 57 is mounted on the lower arm 55. The mounting and pressing module 56 is opposite to the mounting and lifting module 57. The mounting and lifting module 57 is provided with a lifting and positioning groove 571, which is used to insert the rotating shaft assembly 20. During assembly, the pre-installed positioning ring 302 cooperates with the pre-installed positioning groove 501. The mounting and lifting module 57 lifts the rotating shaft assembly 20 from bottom to top onto the bottom shell 10 fixed by the assembly fixture 3. At this time, the mounting and pressing module 56 presses the fan body 30 so that one end of the rotating shaft 203 is interference-fitted with the connecting hole 303, and the fixing bushing 201 at the other end is installed into the rotating shaft fixing groove 101 for fixation. This invention introduces an automated process, including modules such as the assembly turntable 2, the shaft loading assembly 4, and the shaft insertion assembly 5, to achieve efficient and continuous assembly of cooling fans from components to finished products. The design of the assembly turntable 2 allows multiple assembly jigs 3 to pass through each assembly station sequentially, effectively reducing manual handling and waiting time, and significantly improving production efficiency. Secondly, in the shaft insertion stage, the coordinated operation of the insertion lifting module 52, insertion pushing module 53, insertion upper arm 54, and insertion lower arm 55 achieves precise positioning and stable assembly of the shaft assembly 20. In particular, the relative arrangement of the insertion lifting module 57 and the insertion clamping module 56 ensures the stability and accuracy of the shaft assembly 20 during the assembly process. The design of the lifting positioning groove 571 provides a precise placement position for the shaft assembly 20, avoiding misalignment and deviation during assembly. Furthermore, the cooperation between the pre-installed positioning ring 302 and the pre-installed positioning groove 501 provides strong support for the initial positioning of the fan body 30 and the base shell 10. This design not only simplifies the assembly process but also improves assembly accuracy and reliability. Meanwhile, the interference fit between the rotating shaft 203 and the connecting hole 303, as well as the fixing of the fixed bushing 201 and the rotating shaft fixing groove 101, further enhance the overall structural strength and stability of the cooling fan. Furthermore, this assembly mechanism also offers good adaptability and flexibility.By adjusting the assembly fixture 3 and the assembly process, the assembly requirements of different models and specifications of cooling fans can be easily adapted, reducing production costs and cycle time. This invention significantly improves the production quality and efficiency of cooling fans through efficient, accurate, and stable assembly performance. At the same time, its excellent adaptability and flexibility provide strong support for enterprise production and development.

[0025] The bottom shell 10 is provided with an assembly fastener 102, and the rotating shaft fixing groove 101 is provided on the assembly fastener 102. The rotating shaft fixing groove 101 is provided with an assembly positioning surface 103, and the fixed bushing 201 is provided with a positioning plane 2011. During assembly, the assembly positioning surface 103 cooperates with the positioning plane 2011 to position the assembly direction of the fixed bushing 201. The lifting positioning groove 571 is provided with a flat position that cooperates with the positioning plane 2011 to provide directional positioning during assembly. In this embodiment, by cleverly setting the assembly fastener 102 on the bottom shell 10 and opening the rotating shaft fixing groove 101 on this fastener, not only is the stability of the fan structure enhanced, but the assembly process is also optimized. The specially designed assembly positioning surface 103 on the rotating shaft fixing groove 101 precisely cooperates with the positioning plane 2011 on the fixed bushing 201. This design ensures the directional accuracy of the fixed bushing 201 during installation and effectively avoids the risk of performance degradation or damage due to incorrect assembly direction. Furthermore, the flat surface within the positioning groove 571, which matches the positioning plane 2011, further enhances the directional positioning function during assembly, making the entire assembly process smoother and more efficient. This design not only improves the assembly precision of the cooling fan but also significantly shortens assembly time and reduces production costs.

[0026] See Figure 7As shown, the assembly fixture 3 is used to fix the bottom shell 10. Before the assembly turntable 2 drives the assembly fixture 3 into the rotating shaft loading assembly 4, the fan body 30 is placed on the outer shell so that the pre-installed positioning ring 302 of the fan shell mates with the pre-installed positioning groove 501. Specifically, the assembly fixture 3 includes a fixture base 31, a product clamping module 32, and a fixture body 33. The fixture base 31 is used to fix the fixture body 33. The fixture body 33 is provided with a product fixing position 331. Multiple positioning shaft pins 332 are provided on the outer periphery of the product fixing position 331 to fix the product on the fixture base 31. The product clamping module 32 is set on the fixture base 31 to fix the product. In this embodiment, the fixture body 33 is firmly fixed by the fixture base 31, ensuring the stability and accuracy of the entire assembly process. The meticulously designed product fixing position 331 on the fixture body 33, together with multiple positioning pins 332 arranged on the outer periphery, can accurately position the fan body 30 on the housing, effectively avoiding offset and misalignment during assembly, thus ensuring the precise fit between the fan pre-installed positioning ring 302 and the pre-installed positioning slot 501. Furthermore, the product clamping module 32 further enhances the product's fixing effect, making the connection between the fan body 30 and the housing more secure and reliable before the turntable drive fixture enters the rotating shaft loading assembly 4. This design not only simplifies the assembly steps and reduces operational difficulty but also significantly improves assembly efficiency. The design of the product clamping module 32 is also highly flexible, allowing adjustment according to different models and specifications of fan products to adapt to diverse production needs. This design not only improves the fixture's versatility but also reduces the additional costs and time incurred due to product replacement.

[0027] See Figure 7 As shown, the assembly turntable 2 includes a divider 21, a turntable drive motor 22, and a rotating disk 23. The turntable drive motor 22 drives the divider 21 to rotate the rotating disk 23. The upper surface of the rotating disk 23 has multiple fixed positions arranged in a circular array, and the assembly fixture 3 is mounted on these fixed positions. In this embodiment, the turntable drive motor 22 serves as the core power source, precisely driving the divider 21, thereby enabling the rotating disk 23 to rotate smoothly and continuously. This design ensures the continuity and automation of the assembly process, effectively reducing manual intervention and improving production efficiency. The multiple fixed positions arranged in a circular array on the upper surface of the rotating disk 23 not only optimize space utilization but also ensure that each cooling fan component receives uniform and stable processing during assembly. The fixed positions further ensure that the assembly fixture 3 can be accurately installed in the designated positions, thereby guaranteeing the consistency and reliability of the cooling fan components. Furthermore, the assembly turntable 2 has a compact structure, is easy to operate, and is readily integrated into existing automated production lines. Its high degree of flexibility and scalability allows the production line to easily meet the assembly needs of different models and specifications of cooling fans.

[0028] See Figure 9 As shown, a height-fixed pressing assembly 6 is provided on one side of the rotating shaft feeding assembly 4. The height-fixed pressing assembly 6 includes a height-fixed bracket 61, a height-fixed drive module 62, a height-fixed detection element 63, and a height-fixed detection plate 64. The height-fixed bracket 61 is mounted on the worktable 1, the height-fixed drive module 62 is mounted on the height-fixed bracket 61, the height-fixed detection element 63 is mounted on the height-fixed drive module 62, and the height-fixed detection plate 64 is mounted on the height-fixed detection element 63. The height-fixed drive module 62 is used to drive the height-fixed detection element 63 to move the height-fixed detection plate 64 to contact the fan body 30, ensuring that the pre-installed positioning ring 302 of the fan body 30 is in place with the pre-installed positioning groove 501. In this embodiment, the height-fixed bracket 61 is stably mounted on the worktable 1, providing solid support for the entire height-fixed pressing assembly 6. The height-fixed drive module 62 utilizes its high-precision driving capability to flexibly control the movement of the height-fixed detection element 63 and the height-fixed detection plate 64. During this process, the height detection element 63 plays a crucial monitoring role, capable of sensing and providing feedback on the contact status between the height detection plate 64 and the fan body 30 in real time. When the height detection plate 64 contacts the fan body 30, the height drive module 62 can adjust its driving force in a timely manner through a precise feedback mechanism, thereby ensuring that the height detection plate 64 applies appropriate pressure to the fan body 30. This pressure not only helps ensure a tight fit between the pre-installed positioning ring 302 and the pre-installed positioning slot 501, but also effectively avoids misalignment and deviation during assembly.

[0029] See Figure 8As shown, the rotary shaft feeding assembly 4 includes a rotary shaft feeding rack 41, a rotary shaft feeding gantry 42, a rotary shaft feeding XYZ module 43, and a rotary shaft picking element 44. The rotary shaft feeding rack 41 is mounted on the workbench 1, the rotary shaft feeding gantry 42 is mounted on the workbench 1, the rotary shaft feeding XYZ module 43 is mounted on the rotary shaft feeding gantry 42, and the rotary shaft picking element 44 is mounted on the rotary shaft feeding XYZ module 43. The rotary shaft feeding XYZ module 43 drives the rotary shaft picking element 44 to pick up the rotary shaft assembly 20 from the rotary shaft feeding rack 41 and place it onto the lifting positioning slot. In this embodiment, the rotary shaft feeding rack 41 enables the orderly supply of the rotary shaft assembly 20, effectively avoiding the chaos and delays that may be caused by traditional manual feeding, and ensuring the continuity and stability of the production line. Secondly, the rotary loading gantry 42, as a supporting structure, not only stably supports the rotary loading XYZ module 43, but also optimizes space utilization through its reasonable layout, making the entire loading process smoother and more compact. Furthermore, the rotary loading XYZ module 43, as the core driving component, leverages its high-precision, high-speed three-dimensional movement capabilities to precisely control every step of the rotary picking element 44's movement from the feeding rack to the positioning slot, achieving rapid and accurate gripping and placement of the rotary assembly 20. Finally, the ingenious design of the rotary picking element 44 allows it to firmly clamp the rotary assembly 20 while avoiding damage to the component's surface, ensuring the quality and reliability of the cooling fan assembly.

[0030] See Figure 10 As shown, the clamping module 56 includes a clamping drive module 561 and a clamping shaft 562, which is used to clamp one end of the fan body 30 during assembly. Specifically, the lifting module 57 includes a lifting drive module 572 and an assembly positioning component 573. The lifting positioning groove 571 is provided on the assembly positioning component 573, and the lifting drive module 572 is used to drive the assembly positioning component 573 towards the bottom shell 10 for assembly. In this embodiment, the synergistic effect of the clamping drive module 561 and the clamping shaft 562 can effectively and stably clamp one end of the fan body 30 during the assembly stage, ensuring the accuracy and stability of the fan's position during installation. This design not only avoids the fan shaking or misalignment during assembly but also significantly enhances the connection strength between the fan and the bottom shell 10, thereby improving the stability and reliability of the overall heat dissipation performance. Simultaneously, the lifting module 57, driven by the lifting drive module 572, propels the assembly positioning component 573 toward the bottom shell 10, achieving precise positioning and assembly of the fan assembly. The lifting positioning groove 571 further enhances the guiding and positioning accuracy of the assembly positioning component 573, ensuring accurate assembly of the fan assembly onto the bottom shell 10. This design not only simplifies the assembly process and reduces operational difficulty but also significantly improves assembly efficiency.

[0031] like Figures 1-11 As shown, a method for assembling the shaft of a cooling fan includes the aforementioned rotary assembly mechanism for the cooling fan. The assembly method for the cooling fan shaft includes the following steps: Step S1, Pre-assembly: Place the bottom shell 10 on the assembly fixture 3 and fix it. Then, install the fan body 30 into the bottom shell 10 and use the pre-installed positioning ring 302 to cooperate with the pre-installed positioning groove 501 to achieve positioning between the fan body 30 and the bottom shell 10. Step S2, height detection: The assembly turntable 2 drives the assembly fixture 3 to rotate the bottom shell 10 and the fan body 30. When it rotates to the next station, the assembly height between the fan body 30 and the bottom shell 10 is detected to confirm whether the pre-installed positioning ring 302 and the pre-installed positioning groove 501 are properly positioned. Step S3, loading of the rotating shaft assembly 20: The assembly turntable 2 drives the assembly fixture 3 to rotate the bottom shell 10 and the fan body 30 to the next station. At this time, the rotating shaft assembly 20 is positioned and loaded by the rotating shaft loading mechanism, picked up and placed on the lifting positioning groove 571, and then transferred to the bottom of the assembly fixture 3 under the action of the loading lifting module 52 and the loading pushing module 53, and is opposite to the rotating shaft fixing groove 101 of the bottom shell 10. Step S4, Shaft Assembly: Confirm that the lifting module 57 and the clamping module 56 are aligned. Then, lift the shaft assembly 20 from bottom to top with the lifting module 57 and place it onto the fixed base 10 by the assembly fixture 3. At this time, clamp the fan body 30 with the clamping module 56 so that one end of the rotating shaft 203 is interference-fitted with the connecting hole 303, and the fixed bushing 201 at the other end is inserted into the shaft fixing groove 101 for fixation, thus completing the shaft assembly.

[0032] In this embodiment, the pre-assembly step (step S1) utilizes the cooperation between the pre-assembly positioning ring 302 and the pre-assembly positioning groove 501 to ensure accurate positioning between the fan body 30 and the base shell 10. This step effectively avoids misalignment problems during subsequent assembly, improving assembly efficiency and product quality. Simultaneously, pre-assembly makes the assembly relationship between the fan body 30 and the base shell 10 more stable, providing strong support for subsequent steps. Secondly, the height detection step (step S2) drives the assembly fixture 3 to rotate via the assembly turntable 2, achieving precise detection of the assembly height between the fan body 30 and the base shell 10. This step can promptly detect any misalignment between the pre-assembly positioning ring 302 and the pre-assembly positioning groove 501, thus avoiding quality risks caused by improper assembly height. Simultaneously, the height detection also provides accurate reference for the subsequent loading and assembly of the shaft assembly 20. Furthermore, the shaft assembly 20 loading step (step S3) achieves automatic loading and precise positioning of the shaft assembly 20 through the coordinated action of the shaft loading mechanism, the lifting module, and the propulsion module. This step not only improves assembly efficiency but also reduces the difficulty and error of manual operation, allowing the shaft assembly 20 to be accurately and quickly placed under the assembly fixture 3 and aligned with the shaft fixing groove 101 of the base shell 10. Finally, the shaft assembly step (step S4) achieves precise assembly of the shaft assembly 20 through the combined action of the lifting module 57 and the clamping module 56. During this process, one end of the rotating shaft 203 is interference-fitted with the connecting hole 303, and the fixing sleeve 201 at the other end is inserted into the shaft fixing groove 101 for fixation, thereby ensuring the stability and reliability of the shaft assembly 20. At the same time, the clamping module 56 also clamps the fan body 30, further enhancing the stability of the assembly structure.

[0033] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A rotary assembly mechanism for a cooling fan, characterized in that: The cooling fan includes a base shell, a shaft assembly, a fan body, and a cover plate. A stator assembly is mounted on the base shell, and a pre-installed positioning groove is provided on the inner circumference of the stator assembly. The shaft assembly includes a fixed bushing, a shaft fixing component, and a rotating shaft. The shaft fixing component is mounted on the fixed bushing, and the rotating shaft is mounted on the shaft fixing component. The base shell has a shaft fixing groove with an assembly positioning surface. The fixed bushing has a positioning plane. During assembly, the assembly positioning surface mates with the positioning plane to position the fixed bushing in the assembly direction. The fan body has a connecting cavity containing a rotor magnetic ring and a pre-installed positioning ring. The pre-installed positioning ring mates with the pre-installed positioning groove. The rotor magnetic ring is opposite to the stator assembly. One end of the connecting cavity has a connecting hole, and one end of the rotating shaft is interference-fitted with the connecting hole. The rotary assembly mechanism for the cooling fan includes a worktable, an assembly turntable, an assembly fixture, a shaft feeding assembly, and a shaft loading assembly. The assembly turntable is set on the worktable, and multiple sets of assembly fixtures are set on the assembly turntable. The assembly turntable is used to drive the assembly fixtures to pass sequentially through the shaft feeding assembly and the shaft loading assembly. The assembly fixture is used to fix the bottom shell. The rotating shaft installation assembly includes an installation bracket, an installation lifting module, an installation pushing module, an installation upper arm, an installation lower arm, an installation clamping module, and an installation lifting module. The installation bracket is mounted on a worktable, the installation lifting module is mounted on the installation bracket, the installation pushing module is mounted on the installation lifting module, and both the installation upper arm and lower arm are mounted on the installation pushing module. The installation clamping module is mounted on the installation upper arm and includes a clamping drive module and a clamping shaft. The clamping shaft is used to press one end of the fan body during assembly; the mounting lifting module is set on the mounting lower arm, and the mounting lifting module includes a lifting drive module and an assembly positioning component. The assembly positioning component is provided with a lifting positioning groove, which is used to insert the rotating shaft assembly. The lifting positioning groove is provided with a flat position that mates with the positioning plane for directional positioning during assembly; the mounting clamping module is opposite to the mounting lifting module, and the lifting drive module is used to drive the assembly positioning component to assemble toward the bottom shell. A height-fixing pressing component is provided on one side of the rotating shaft feeding assembly. The height-fixing pressing component includes a height-fixing bracket, a height-fixing drive module, a height-fixing detection element, and a height-fixing detection plate. The height-fixing bracket is set on the workbench, the height-fixing drive module is set on the height-fixing bracket, the height-fixing detection element is set on the height-fixing drive module, and the height-fixing detection plate is set on the height-fixing detection element. The height-fixing drive module is used to drive the height-fixing detection element to bring the height-fixing detection plate into contact with the fan body, so as to ensure that the pre-installed positioning ring of the fan body is in place with the pre-installed positioning slot. During assembly, the pre-installed positioning ring and pre-installed positioning groove are used to lift the shaft assembly from bottom to top onto the bottom shell fixed by the assembly fixture. At this time, the clamping module is installed to clamp the fan body so that one end of the rotating shaft is interference-fitted with the connecting hole, and the other end of the fixed shaft is fitted into the rotating shaft fixing groove for fixation.

2. The rotary assembly mechanism for the cooling fan according to claim 1, characterized in that: The assembly fixture is used to fix the bottom shell. Before the assembly turntable drives the assembly fixture into the rotating shaft feeding assembly, the fan body is placed on the outer shell so that the pre-installed positioning ring of the fan shell matches the pre-installed positioning groove.

3. The rotary assembly mechanism for the cooling fan according to claim 1, characterized in that: The assembly turntable includes a divider, a turntable drive motor, and a rotating disk. The turntable drive motor is used to drive the divider to rotate the rotating disk. The upper surface of the rotating disk has multiple fixed positions arranged in a circumferential array, and the assembly fixture is set on the fixed positions.

4. The rotary assembly mechanism for the cooling fan according to claim 1, characterized in that: The assembly fixture includes a fixture base, a product clamping module, and a fixture body. The fixture base is used to fix the fixture body. The fixture body is provided with a product fixing position. Multiple positioning pins are provided on the outer periphery of the product fixing position to fix the product on the fixture base. The product clamping module is provided on the fixture base to fix the product.

5. The rotary assembly mechanism for the cooling fan according to claim 1, characterized in that: The rotary shaft feeding assembly includes a rotary shaft feeding rack, a rotary shaft feeding gantry, a rotary shaft feeding XYZ module, and a rotary shaft picking element. The rotary shaft feeding rack is mounted on the worktable, the rotary shaft feeding gantry is mounted on the worktable, the rotary shaft feeding XYZ module is mounted on the rotary shaft feeding gantry, and the rotary shaft picking element is mounted on the rotary shaft feeding XYZ module. The rotary shaft feeding XYZ module is used to drive the rotary shaft picking element to grab the rotary shaft assembly from the rotary shaft feeding rack and place it on the lifting positioning slot.

6. A method for assembling the shaft of a cooling fan, characterized in that: Includes the rotary assembly mechanism for cooling fans as described in any one of claims 1 to 5; The assembly method for the cooling fan shaft includes the following steps: Step S1, Pre-assembly: Place the bottom shell on the assembly fixture and fix it, then install the fan body into the bottom shell, and use the pre-installed positioning ring and the pre-installed positioning groove to achieve positioning between the fan body and the bottom shell. Step S2, Height Measurement: The assembly turntable drives the assembly fixture to rotate the bottom shell and the fan body. When it rotates to the next station, the assembly height between the fan body and the bottom shell is measured to confirm whether the pre-installed positioning ring and the pre-installed positioning slot are properly positioned. Step S3, Rotary shaft assembly loading: The assembly turntable drives the assembly fixture to rotate the bottom shell and fan body to the next station. At this time, the rotary shaft assembly is positioned and loaded by the rotary shaft loading mechanism, grabbed and placed on the lifting positioning groove, and then transferred to the bottom of the assembly fixture under the action of the loading lifting module and loading pushing module, and is opposite to the rotary shaft fixing groove of the bottom shell. Step S4, Shaft Assembly: Confirm that the lifting module and the clamping module are aligned. Then, use the lifting module to lift the shaft assembly from bottom to top onto the fixed base shell of the assembly fixture. At this time, use the clamping module to press the fan body so that one end of the rotating shaft is interference-fitted with the connecting hole, and the other end of the fixed shaft is fitted into the shaft fixing groove for fixation, thus completing the shaft assembly.

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