Automatic assembly equipment and assembly method for cooling fan

Abstract

The invention relates to the technical field of cooling fan production, in particular to cooling fan automatic assembling equipment and an assembling method.The cooling fan automatic assembling equipment comprises a workbench, an assembling rotating disc, assembling jigs, a shell feeding mechanism, a fan feeding mechanism, a rotating shaft feeding assembly, a rotating shaft loading assembly, an upper cover loading mechanism and a discharging station; the multiple sets of assembling jigs are arranged on the assembling rotary disc. During assembling, the preassembling positioning ring is matched with the preassembling positioning groove, the rotating shaft assembly is jacked to the bottom shell fixed by the assembling jig from bottom to top through the loading jacking module, and at the moment, the fan body is pressed through the loading pressing module, so that one end of the rotating shaft is in interference fit with the connecting hole, and a fixing shaft sleeve at the other end of the rotating shaft is loaded into the rotating shaft fixing groove to be fixed; through efficient, accurate and stable assembling performance, the production quality and efficiency of the cooling fan are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation fan production, and in particular to automatic assembly equipment and an assembly method for a heat dissipation fan. Background Art

[0002] Motors, as a device that converts electrical energy into mechanical energy (or vice versa, that is, converts mechanical energy into electrical energy), play a vital role in modern industry and daily life. From a professional perspective, motors mainly work based on the principle of electromagnetic induction, and their core components usually include stators, rotors, and electromagnetic windings. The motor encoder is a key sensor installed on the motor, which is responsible for converting mechanical motion parameters such as the rotation position, speed, and direction of the motor shaft into electrical signal output. This conversion enables the control system to accurately monitor and adjust the operating status of the motor, thereby achieving closed-loop feedback control.

[0003] The existing motor encoder installation structure is generally directly connected to the motor output shaft. The direct connection structure has poor stability and affects the sensing accuracy, resulting in poor compatibility and flexibility in the use of the structure. Therefore, a new design is needed for the existing encoder installation structure. Summary of the invention

[0004] To solve the above problems, the present invention significantly improves the production quality and efficiency of the cooling fan through efficient, accurate and stable assembly performance. At the same time, its good adaptability and flexibility also provide a cooling fan automatic assembly device and assembly method that strongly supports the production and development of enterprises.

[0005] The technical solution adopted by the present invention is: an automatic assembly device for a heat dissipation fan, the heat dissipation fan comprises a bottom shell, a rotating shaft assembly, a fan body and a cover plate, a stator assembly is installed on the bottom shell, a pre-installed positioning groove is arranged on the inner circumference of the stator assembly, the rotating shaft assembly comprises a fixed sleeve, a rotating shaft fixing part and a rotating shaft, the rotating shaft fixing part is arranged on the fixed sleeve, the rotating shaft is arranged on the rotating shaft fixing part, the rotating shaft fixing groove is arranged on the bottom shell, the fixed sleeve is arranged on the rotating shaft fixing groove, the fan body is provided with a connecting cavity, a rotor magnetic ring is arranged in the connecting cavity, a pre-installed positioning ring is arranged 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, one end of the connecting cavity is provided with a connecting hole, and one end of the rotating shaft is interference fit with the connecting hole;

[0006] The automatic assembly equipment of the cooling fan includes a workbench, an assembly turntable, an assembly jig, a shell feeding mechanism, a fan feeding mechanism, a shaft feeding assembly, a shaft loading assembly, an upper cover loading mechanism and a blanking station, wherein the assembly turntable is arranged on the workbench, and the assembly jig is provided with multiple groups and arranged on the assembly turntable, and the assembly turntable is used to drive the assembly turntable to pass through the shell feeding mechanism, the fan feeding mechanism, the shaft feeding assembly, the shaft loading assembly, the upper cover loading mechanism and the blanking mechanism in sequence; the assembly jig is used to fix the bottom shell; the shell feeding mechanism is used to grab and place the bottom shell on the assembly jig, and the fan feeding mechanism is used to grab and place the fan on the bottom shell so that the pre-installed positioning ring cooperates with the pre-installed positioning groove, and the shaft loading assembly includes a loading bracket, a loading lifting module, a loading propulsion module, a loading upper arm, a loading lower arm, a loading clamping module and a loading jacking module, and the loading bracket is arranged on the workbench The loading and lifting module is arranged on the loading bracket, the loading pushing module is arranged on the loading and lifting module, the loading upper arm and the loading lower arm are both arranged on the loading pushing module, the loading pressing module is arranged on the loading upper arm, the loading lifting module is arranged on the loading lower arm, the loading pressing module is opposite to the loading lifting module, and the loading lifting module is provided with a lifting positioning groove, and the lifting positioning groove is used to place the rotating shaft assembly; during assembly, the pre-installed positioning ring cooperates with the pre-installed positioning groove, and the loading lifting module lifts the rotating shaft assembly from bottom to top to the bottom shell fixed by the assembly fixture. At this time, the loading and pressing module presses the fan body so that one end of the rotating shaft is interference fit with the connecting hole, and the fixed shaft sleeve at the other end is inserted into the rotating shaft fixing groove and fixed; the upper cover loading mechanism is used to grab the cover plate and place it on the upper side of the bottom shell, and buckle the cover plate on the bottom shell, and the unloading station is used for unloading the assembled cooling fan.

[0007] A further improvement to the above scheme is that the bottom shell is provided with an assembly fixing part, the shaft fixing groove is provided on the assembly fixing part, the shaft fixing groove is provided with an assembly positioning surface, and the fixed sleeve is provided with a positioning plane. During assembly, the assembly positioning surface cooperates with the positioning plane to position and assemble the assembly direction of the fixed sleeve; the lifting positioning groove is provided with a flat position that cooperates with the positioning plane to position the direction during assembly; the assembly jig is used to fix the bottom shell, and before the assembly turntable drives the assembly jig to enter the shaft feeding component, the fan body is placed on the outer casing to match the pre-installed positioning ring of the fan outer casing with the pre-installed positioning groove.

[0008] A further improvement to the above scheme is that the assembly turntable includes a divider, a turntable drive motor and a rotating disc, the turntable drive motor is used to drive the divider to drive the rotating disc to rotate, the upper surface of the rotating disc is provided with a plurality of fixed positions in a circular array, and the assembly jig is provided on the fixed positions.

[0009] A further improvement to the above scheme is that the assembly jig includes a jig base, a product clamping module and a jig body, the jig base is used to fix the jig body, the jig body is provided with a product fixing position, the periphery of the product fixing position is provided with a plurality of positioning pins to fix the product on the jig base, and the product clamping module is provided on the jig base to fix the product.

[0010] A further improvement to the above scheme is that the shell feeding mechanism includes a shell feeding platform, a shell feeding XYZ module, a shell feeding adjustment module and a shell feeding grabbing module, the shell feeding platform is used for placing and positioning the bottom shell; the shell feeding adjustment module is arranged on the shell feeding XYZ module, and the shell feeding grabbing module is arranged on the shell feeding adjustment module; the shell feeding grabbing module is used to grab the bottom shell from the shell feeding platform, the shell feeding adjustment module is used to adjust the direction of the bottom shell grabbed by the shell feeding grabbing module, and the shell feeding XYZ module is used to drive the shell feeding adjustment module and drive the shell feeding grabbing module to move.

[0011] A further improvement to the above scheme is that the fan loading mechanism includes a fan discharge platform, a fan material picking XYZ module and a fan grabbing module, the fan discharge platform is used to place the fan body, the fan grabbing module is arranged on the fan material picking XYZ module, and the fan material picking XYZ module is used to drive the fan grabbing module to grab the fan on the fan discharge platform and place it on the bottom shell on the assembly jig for assembly.

[0012] A further improvement to the above scheme is that a height-fixing pressing assembly is provided on one side of the rotating shaft feeding assembly, and the height-fixing pressing assembly includes a height-fixing bracket, a height-fixing driving module, a height-fixing detection element and a height-fixing detection plate, the height-fixing bracket is arranged on a workbench, the height-fixing driving module is arranged on the height-fixing bracket, the height-fixing detection element is arranged on the height-fixing driving module, and the height-fixing detection plate is arranged on the height-fixing detection element, and the height-fixing driving module is used to drive the height-fixing detection element to drive the height-fixing detection plate to contact the fan body to ensure that the pre-installed positioning ring of the fan body cooperates with the pre-installed positioning groove in place.

[0013] A further improvement to the above scheme is that the shaft feeding assembly includes a shaft feeding rack, a shaft feeding gantry, a shaft feeding XYZ module and a shaft picking element, the shaft feeding rack is arranged on the workbench, the shaft feeding gantry is arranged on the workbench, the shaft feeding XYZ module is arranged on the shaft feeding gantry, the shaft picking element is arranged on the shaft feeding XYZ module, and the shaft feeding XYZ module is used to drive the shaft picking element to grab the shaft assembly from the shaft feeding rack and place it on the lifting positioning groove.

[0014] A further improvement to the above scheme is that the loading and clamping module includes a clamping drive module and a clamping shaft, and the clamping shaft is used to clamp one end of the fan body during assembly; the loading and lifting module includes a lifting drive module and an assembly positioning piece, the lifting positioning groove is arranged on the assembly positioning piece, and the lifting drive module is used to drive the assembly positioning piece to assemble toward the bottom shell.

[0015] A further improvement to the above scheme is that the upper cover loading mechanism includes an upper cover conveyor line, an upper cover material picking XYZ module and an upper cover grabbing module. The upper cover conveyor line is used for cover plate conveying, and the upper cover grabbing module is arranged on the upper cover XYZ module. The upper cover material picking XYZ module is used to drive the upper cover grabbing module to grab the cover plate on the conveyor line and place it on the assembly jig for snap-fit ​​assembly with the bottom shell.

[0016] A method for assembling a rotating shaft of a heat dissipation fan, comprising the automatic assembly device for the heat dissipation fan,

[0017] The method for assembling the rotating shaft of the cooling fan comprises the following steps:

[0018] Step S1, pre-assembly: the bottom shell is placed on an assembly jig and fixed, and then the fan body is installed on the bottom shell, and the pre-installed positioning ring is matched with the pre-installed positioning groove to achieve positioning between the fan body and the bottom shell;

[0019] Step S2, height detection: the assembly turntable drives the assembly fixture to drive the bottom shell and the fan body to rotate, and rotate to the next station to detect the assembly height between the fan body and the bottom shell to confirm whether the pre-installed positioning ring and the pre-installed positioning groove are positioned and matched;

[0020] Step S3, loading the shaft assembly: the assembly turntable drives the assembly jig to drive the bottom shell and the fan body to rotate and rotate to the next station. At this time, the shaft assembly is positioned and loaded by the shaft loading mechanism, grabbed and placed on the top positioning groove, and then transferred to the bottom of the assembly jig under the action of the loading lifting module and the loading pushing module, and is opposite to the shaft fixing groove of the bottom shell;

[0021] Step S4, shaft assembly: confirm that the lifting module is installed opposite to the pressing module, then install the lifting module to lift the shaft assembly from bottom to top to the bottom shell fixed by the assembly fixture. At this time, install the pressing module to press the fan body so that one end of the rotating shaft is interference fit with the connecting hole, and the fixed shaft sleeve at the other end is inserted into the shaft fixing groove and fixed to complete the shaft assembly.

[0022] The beneficial effects of the present invention are:

[0023] Compared with the existing cooling fan assembly, the present invention realizes the unmanned operation of the cooling fan from the shell loading to the final unloading through a highly integrated automation design. The assembly turntable arranged on the workbench works in coordination with multiple groups of assembly jigs to ensure the orderly progress of each assembly step. The assembly turntable not only drives the assembly jigs to pass through each loading and assembly mechanism in turn, but also realizes the precise docking between each component through precise positioning and rotation control, thereby improving the assembly accuracy and efficiency. In the design of the shell loading mechanism and the fan loading mechanism, advanced grasping and placement technology is adopted to ensure the accurate placement of the bottom shell and the fan. In particular, the fan loading mechanism can accurately place the fan on the bottom shell, so that the pre-installed positioning ring and the pre-installed positioning groove are closely matched, laying a solid foundation for the subsequent assembly steps. This design not only improves the accuracy of assembly, but also effectively avoids assembly errors caused by improper human operation. The shaft loading assembly ensures the precise positioning and installation of the shaft assembly through the coordinated work of loading the lifting module, loading the propulsion module, loading the upper arm and loading the lower arm. In particular, the relative arrangement of the loading and pressing module and the loading and lifting module, as well as the design of the lifting positioning groove, enable the shaft assembly to be lifted from the bottom to the bottom shell fixed by the assembly fixture, while ensuring that the fan body is pressed, one end of the rotating shaft is interference-fitted with the connecting hole, and the fixed shaft at the other end is inserted into the shaft fixing groove for fixing. This process not only realizes the efficient and precise installation of the shaft, but also ensures that the assembled cooling fan has stable performance and reliable quality. In addition, the design of the upper cover loading mechanism also reflects a high degree of automation and intelligence. It can accurately grab and place the cover plate on the upper side of the bottom shell, and buckle the cover plate on the bottom shell to complete the assembly of the cooling fan. The automation of this step not only improves the assembly efficiency, but also avoids problems such as damage to the cover plate or loose buckling due to improper human operation. Finally, the design of the unloading station also fully considers the balance between production efficiency and product quality. It can automatically unload the assembled cooling fan, which provides convenience for subsequent packaging and testing. At the same time, through the intelligent control system, the equipment can also monitor various parameters in the assembly process in real time to ensure that each cooling fan meets quality standards.

[0024] The shaft assembly method of the heat dissipation fan, through the pre-assembly step (step S1), uses the cooperation of the pre-installed positioning ring and the pre-installed positioning groove to ensure the accurate positioning between the fan body and the bottom shell. This step effectively avoids the misalignment problem in the subsequent assembly process, and improves the assembly efficiency and the quality of the finished product. At the same time, the pre-assembly also makes the assembly relationship between the fan body and the bottom shell more stable, providing a strong guarantee for the subsequent steps. Secondly, the height determination detection step (step S2) drives the assembly jig to rotate by the assembly turntable, so as to realize the accurate detection of the assembly height between the fan body and the bottom shell. This step can timely discover the cooperation problem between the pre-installed positioning ring and the pre-installed positioning groove, thereby avoiding the quality risks caused by improper assembly height. At the same time, the height determination detection also provides an accurate reference basis for the subsequent feeding and assembly of the shaft assembly. Furthermore, the shaft assembly feeding step (step S3) realizes the automatic feeding and precise positioning of the shaft assembly through the synergistic effect of the shaft feeding mechanism, the lifting module and the propulsion module. This step not only improves the assembly efficiency, but also reduces the difficulty and error of manual operation, so that the shaft assembly can be accurately and quickly placed under the assembly jig and opposite to the shaft fixing groove of the bottom shell. Finally, the shaft assembly step (step S4) realizes the precise assembly of the shaft assembly by the cooperation of installing the jacking module and installing the clamping module. In this process, one end of the rotating shaft is interference fit with the connecting hole, and the fixed shaft sleeve at the other end is inserted into the shaft fixing groove and fixed, thereby ensuring the stability and reliability of the shaft assembly. At the same time, installing the clamping module also presses the fan body, further enhancing the stability of the assembly structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional schematic diagram of a heat dissipation fan of the present invention;

[0026] Figure 2 for Figure 1 Explosion diagram of the cooling fan;

[0027] Figure 3 for Figure 1 A schematic diagram of the structure of the shaft assembly of the cooling fan;

[0028] Figure 4 for Figure 1 Schematic diagram of the assembly process of the cooling fan;

[0029] Figure 5 It is a three-dimensional schematic diagram of the automatic assembly equipment for cooling fans of the present invention;

[0030] Figure 6 for Figure 5 A three-dimensional schematic diagram of the automatic assembly equipment for cooling fans from another perspective;

[0031] Figure 7 for Figure 5 A schematic diagram of the main view of the automatic assembly equipment for cooling fans;

[0032] Figure 8 for Figure 5 A schematic diagram of the structure of the assembly turntable of the automatic assembly equipment for cooling fans;

[0033] Fig. 9 for Figure 5 A schematic diagram of the structure of the shaft feeding assembly of the automatic assembly equipment for cooling fans;

[0034] Fig.10 for Figure 5 A schematic diagram of the structure of the fixed height pressing assembly of the automatic assembly equipment for cooling fans;

[0035] Fig.11 for Figure 5 A schematic diagram of the structure of the shaft assembly of the automatic assembly equipment for cooling fans;

[0036] Fig.12 The figure is a schematic flow chart of a method for assembling a rotating shaft of a heat dissipation fan according to the present invention.

[0037] Description of reference numerals: bottom shell 10, shaft fixing groove 101, assembly fixing member 102, assembly positioning surface 103, shaft assembly 20, fixing sleeve 201, positioning plane 2011, shaft fixing member 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;

[0038] Assemble turntable 1, divider 12, turntable drive motor 13, rotating disc 14, assemble fixture 11, fixture base 111, product clamping module 112, fixture body 113, product fixing position 1131, positioning shaft pin 1132, shell feeding mechanism 2, shell discharge platform 21, shell picking XYZ module 22, shell picking adjustment module 23, shell feeding grabbing module 24, fan feeding mechanism 3, fan discharge platform 31, fan picking XYZ module 32, fan grabbing module 33, shaft feeding assembly 4, shaft feeding rack 41, shaft feeding gantry 42, shaft feeding XYZ module 4 3. Rotating shaft material picking element 44, rotating shaft loading assembly 5, loading bracket 51, loading lifting module 52, loading propulsion module 53, loading upper arm 54, loading lower arm 55, loading clamping module 56, clamping drive module 561, clamping shaft 562, loading jacking module 57, jacking positioning groove 571, jacking drive module 572, assembly positioning part 573, fixed height pressing assembly 6, fixed height bracket 61, fixed height drive module 62, fixed height detection element 63, fixed height detection plate 64, upper cover loading mechanism 7, upper cover conveyor line 71, upper cover material picking XYZ module 72, upper cover grabbing module 73, unloading station 8. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0040] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0042] like Figure 1 to Figure 4As shown, in one embodiment of the present invention, a heat dissipation fan is involved, including a bottom shell 10, a shaft assembly 20, a fan body 30 and a cover plate 40, wherein the cover plate 40 is buckled on the bottom shell 10, a stator assembly 50 is installed on the bottom shell 10, and a pre-installed positioning groove 501 is arranged on the inner periphery of the stator assembly 50, the shaft assembly 20 includes a fixed shaft sleeve 201, a shaft fixing part 202 and a rotating shaft 203, the shaft fixing part 202 is arranged on the fixed shaft sleeve 201, and the rotating shaft 203 is arranged on the shaft fixing part 202, the bottom shell 10 is provided with a rotating shaft fixing groove 101, the fixed sleeve 201 is arranged on the rotating shaft fixing groove 101, the fan body 30 is provided with a connecting cavity, the connecting cavity is provided with a rotor magnetic ring 301, the connecting cavity is provided with a pre-installed positioning ring 302, 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 fit with the connecting hole 303. In this embodiment, the stator assembly 50 installed on the bottom shell 10 and the pre-installed positioning groove 501 preset on its inner circumference are matched with the pre-installed positioning ring 302 set in the connecting cavity of the fan body 30, so as to achieve accurate positioning of the fan assembly during the installation process. 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 the heat dissipation efficiency and running stability. Secondly, the ingenious design of the shaft assembly 20, including the integration of the fixed sleeve 201, the shaft fixing part 202 and the rotating shaft 203, further enhances the stability of the fan structure. The fixed 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 when rotating at high speed. Furthermore, the relative layout of the rotor magnetic ring 301 and the stator assembly 50 inside the fan body 30 constitutes an efficient electromagnetic drive system. This design not only improves the energy conversion efficiency, allowing the fan to achieve higher speed and air volume output with lower energy consumption, but also realizes flexible adjustment of the fan speed through precise magnetic field control, meeting the heat dissipation requirements in different application scenarios.

[0043] like Figures 1 to 12As shown, an automatic assembly device for a heat dissipation fan comprises a workbench, an assembly turntable 1, an assembly fixture 11, a shell feeding mechanism 2, a fan feeding mechanism 3, a shaft feeding assembly 4, a shaft loading assembly 5, an upper cover loading mechanism 7 and a material unloading station 8, wherein the assembly turntable 1 is arranged on the workbench, the assembly fixture 11 is provided with a plurality of groups and is arranged on the assembly turntable 1, and the assembly turntable 1 is used to drive the assembly turntable 1 to pass through the shell feeding mechanism 2, the fan feeding mechanism 3, the shaft feeding assembly 4, the shaft loading assembly 5, the upper cover loading mechanism 7 and the material unloading station 8 in sequence. The fan loading mechanism 3 is used to grab and place the fan on the bottom shell, so that the pre-installed positioning ring cooperates with the pre-installed positioning groove, and the shaft loading component 5 includes a loading bracket, a loading lifting module, a loading pushing module, a loading upper arm, a loading lower arm, a loading pressing module, and a loading lifting module. The loading bracket is arranged on the workbench, the loading lifting module is arranged on the loading bracket, the loading pushing module is arranged on the loading lifting module, the loading upper arm and the loading lower arm are both arranged on the loading pushing module, the loading pressing module is arranged on the loading upper arm, the loading lifting module is arranged on the loading lower arm, the loading pressing module is opposite to the loading lifting module, and the loading lifting module is provided with a lifting positioning groove, and the lifting positioning groove is used to place the rotating shaft assembly Parts; during assembly, the pre-installed positioning ring cooperates with the pre-installed positioning groove, and the lifting module is installed to lift the shaft assembly from bottom to top to the bottom shell fixed by the assembly fixture 11. At this time, the pressing module is installed to press the fan body so that one end of the rotating shaft is interference-fitted with the connecting hole, and the fixed shaft sleeve at the other end is inserted into the shaft fixing groove and fixed; the upper cover loading mechanism 7 is used to grab and place the cover plate on the upper side of the bottom shell, and snap the cover plate on the bottom shell, and the unloading station 8 is used to unload the assembled cooling fan. The present invention realizes the unmanned operation of the cooling fan from the shell loading to the final unloading through a highly integrated automation design. The assembly turntable 1 set on the workbench works with multiple groups of assembly fixtures 11 to ensure the orderly progress of each assembly step. The assembly turntable 1 not only drives the assembly fixture 11 to pass through each loading and assembly mechanism in turn, but also realizes the precise docking between the components through precise positioning and rotation control, thereby improving the assembly accuracy and efficiency. In the design of the shell feeding mechanism 2 and the fan feeding mechanism 3, advanced grabbing and placement technology is used to ensure the accurate placement of the bottom shell and the fan. In particular, the fan feeding mechanism 3 can accurately place the fan on the bottom shell, so that the pre-installed positioning ring and the pre-installed positioning groove are closely matched, laying a solid foundation for the subsequent assembly steps. This design not only improves the accuracy of assembly, but also effectively avoids assembly errors caused by improper human operation. The shaft loading assembly 5 ensures the accurate positioning and installation of the shaft assembly through the coordinated work of loading the lifting module, loading the propulsion module, loading the upper arm and loading the lower arm.In particular, the relative arrangement of the loading and pressing module and the loading and lifting module, as well as the design of the lifting positioning groove, enable the shaft assembly to be lifted from the bottom to the bottom shell fixed by the assembly fixture 11, while ensuring that the fan body is pressed, one end of the rotating shaft is interference-fitted with the connecting hole, and the fixed shaft at the other end is inserted into the shaft fixing groove for fixing. This process not only realizes the efficient and accurate installation of the shaft, but also ensures that the assembled cooling fan has stable performance and reliable quality. In addition, the design of the upper cover loading mechanism 7 also reflects a high degree of automation and intelligence. It can accurately grab and place the cover plate on the upper side of the bottom shell, and buckle the cover plate on the bottom shell, thereby completing the assembly of the cooling fan. The automation of this step not only improves the assembly efficiency, but also avoids problems such as damage to the cover plate or loose buckling caused by improper human operation. Finally, the design of the unloading station 8 also fully considers the balance between production efficiency and product quality. It can automatically unload the assembled cooling fan, which provides convenience for subsequent packaging and testing. At the same time, through the intelligent control system, the equipment can also monitor various parameters in the assembly process in real time to ensure that each cooling fan meets quality standards.

[0044] The bottom shell 10 is provided with an assembly fixture 102, the shaft fixing groove 101 is provided on the assembly fixture 102, the shaft fixing groove 101 is provided with an assembly positioning surface 103, and the fixed sleeve 201 is provided with a positioning plane 2011. During assembly, the assembly positioning surface 103 cooperates with the positioning plane 2011 to position and assemble the assembly direction of the fixed sleeve 201; the lifting positioning groove 571 is provided with a flat position that cooperates with the positioning plane 2011 to position the direction during assembly. In this embodiment, by cleverly arranging the assembly fixture 102 on the bottom shell 10 and opening the shaft fixing groove 101 on this fixture, not only the stability of the fan structure is enhanced, but also the assembly process is optimized. The specially designed assembly positioning surface 103 on the shaft fixing groove 101 is precisely matched with the positioning plane 2011 on the fixed sleeve 201. This design ensures the directional accuracy of the fixed sleeve 201 during the installation process, and effectively avoids the performance degradation or damage risk caused by the wrong assembly direction. In addition, the flat position in the jacking positioning groove 571 that matches the positioning plane 2011 further strengthens the directional positioning function during assembly, making the entire assembly process smoother and more efficient. This design not only improves the assembly accuracy of the cooling fan, but also significantly shortens the assembly time and reduces production costs.

[0045] See also Figure 8As shown, the assembly jig 11 is used to fix the bottom shell 10. Before the assembly turntable 1 drives the assembly jig 11 to enter the shaft feeding assembly 4, the fan body 30 is placed on the outer shell to match the pre-installed positioning ring 302 of the fan outer shell with the pre-installed positioning groove 501. Specifically, the assembly jig 11 includes a jig base 111, a product clamping module 112 and a jig body 113. The jig base 111 is used to fix the jig body 113. The jig body 113 is provided with a product fixing position 1131. The periphery of the product fixing position 1131 is provided with a plurality of positioning shaft pins 1132 to fix the product on the jig base 111. The product clamping module 112 is provided on the jig base 111 to fix the product. In this embodiment, the jig body 113 is firmly fixed by the jig base 111, thereby ensuring the stability and accuracy of the entire assembly process. The carefully designed product fixing position 1131 on the jig body 113, in conjunction with the multiple positioning pins 1132 arranged on the periphery, can accurately position the fan body 30 on the outer shell, effectively avoiding the offset and misalignment during the assembly process, thereby ensuring the precise fit between the fan pre-installed positioning ring 302 and the pre-installed positioning groove 501. In addition, the setting of the product clamping module 112 further enhances the fixing effect of the product, making the connection between the fan body 30 and the outer shell more firm and reliable before the turntable drives the jig into the shaft feeding assembly 4. This design not only simplifies the assembly steps and reduces the difficulty of operation, but also significantly improves the assembly efficiency. The design of the product clamping module 112 is also very flexible and can be adjusted according to fan products of different models and specifications to meet diverse production needs. This design not only improves the versatility of the jig, but also reduces the additional cost and time caused by changing products.

[0046] The assembly turntable 1 includes a divider 12, a turntable drive motor 13 and a rotating disc 14. The turntable drive motor 13 is used to drive the divider 12 to drive the rotating disc 14 to rotate. The upper surface of the rotating disc 14 is provided with a plurality of fixed positions in a circular array, and the assembly jig 11 is arranged on the fixed position. In this embodiment, the turntable drive motor 13 serves as the core power source to accurately drive the divider 12, thereby driving the rotating disc 14 to achieve smooth and continuous rotation. This design ensures the continuity and automation level of the assembly process, effectively reduces manual intervention, and improves production efficiency. The upper surface of the rotating disc 14 is provided with a plurality of fixed positions in a circular array. This layout not only optimizes space utilization, but also enables each cooling fan assembly to obtain uniform and stable treatment during the assembly process. The setting of the fixed position further ensures that the assembly jig 11 can be accurately installed in the specified position, thereby ensuring the consistency and reliability of the cooling fan assembly. In addition, the assembly turntable 1 has a compact structure, is easy to operate, and is easy to integrate into an existing automated production line. Its high flexibility and scalability enable the production line to easily meet the assembly needs of cooling fans of different models and specifications.

[0047] The shell feeding mechanism 2 includes a shell feeding platform 21, a shell picking XYZ module 22, a shell picking adjustment module 23 and a shell feeding grabbing module 24. The shell feeding platform 21 is used for placing and positioning the bottom shell; the shell picking adjustment module 23 is arranged on the shell picking XYZ module 22, and the shell feeding grabbing module 24 is arranged on the shell picking adjustment module 23; the shell feeding grabbing module 24 is used to grab the bottom shell from the shell feeding platform 21, the shell picking adjustment module 23 is used to adjust the direction of the bottom shell grabbed by the shell feeding grabbing module 24, and the shell picking XYZ module 22 is used to drive the shell picking adjustment module 23 and drive the shell feeding grabbing module 24 to move. In this embodiment, the shell feeding platform 21 provides a stable and accurate positioning reference for the bottom shell of the cooling fan, ensuring the smooth progress of subsequent grabbing and assembly operations. The shell material picking XYZ module 22 can flexibly send the shell material picking adjustment module 23 and the shell material loading grabbing module 24 to the designated position through its high-precision three-dimensional movement capability, greatly enhancing the flexibility of the assembly operation. The shell material picking adjustment module 23 plays an important role in adjusting the direction of the bottom shell, so that the bottom shell can be accurately aligned with the assembly position of the cooling fan, avoiding assembly errors caused by direction misalignment. The shell material loading grabbing module 24, with its precise grabbing ability, realizes stable transmission from the material discharging platform to the assembly position, ensuring the stability of the bottom shell during the assembly process.

[0048] The fan feeding mechanism 3 includes a fan feeding platform 31, a fan material taking XYZ module 32 and a fan grabbing module 33. The fan feeding platform 31 is used to place the fan body, and the fan grabbing module 33 is arranged on the fan material taking XYZ module 32. The fan material taking XYZ module 32 is used to drive the fan grabbing module 33 to grab the fan on the fan feeding platform 31 and place it on the bottom shell on the assembly fixture 11 for assembly. In this embodiment, the fan body is stably placed by the fan feeding platform 31, providing a reliable material basis for subsequent operations. As a core driving component, the fan material taking XYZ module 32 can accurately locate and drive the fan grabbing module 33 with its high-precision three-dimensional movement capability. This design not only improves the accuracy of assembly, but also significantly improves production efficiency. Driven by the fan material taking XYZ module 32, the fan grabbing module 33 can flexibly grab the fan from the fan feeding platform 31 and accurately place it in the bottom shell on the assembly fixture 11. This process enables the fan to be quickly and accurately connected to the base casing, effectively avoiding assembly problems caused by human error.

[0049] See also Fig.10 As shown, a height-fixing pressing assembly 6 is provided on one side of the rotating shaft feeding assembly 4, and the height-fixing pressing assembly 6 includes a height-fixing bracket 61, a height-fixing driving module 62, a height-fixing detection element 63 and a height-fixing detection plate 64. The height-fixing bracket 61 is arranged on a workbench, the height-fixing driving module 62 is arranged on the height-fixing bracket 61, the height-fixing detection element 63 is arranged on the height-fixing driving module 62, and the height-fixing detection plate 64 is arranged on the height-fixing detection element 63. The height-fixing driving module 62 is used to drive the height-fixing detection element 63 to drive the height-fixing detection plate 64 to contact the fan body 30, so as to ensure 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-fixing bracket 61 is firmly mounted on the workbench, providing a solid support for the entire height-fixing pressing assembly 6. The height-fixing driving module 62 uses its high-precision driving capability to flexibly control the height-fixing detection element 63 and the height-fixing detection plate 64 to move. In this process, the height detection element 63 plays a vital monitoring role, which can sense and feedback 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 driving module 62 can adjust its driving force in time through the precise feedback mechanism, thereby ensuring that the height detection plate 64 applies appropriate pressure to the fan body 30. This pressure not only helps the pre-installed positioning ring 302 to fit tightly with the pre-installed positioning groove 501, but also effectively avoids misalignment and deviation during the assembly process.

[0050] See also Figure 8As shown, the shaft loading assembly 4 includes a shaft feeding frame 41, a shaft loading gantry 42, a shaft loading XYZ module 43 and a shaft picking element 44, wherein the shaft feeding frame 41 is arranged on a workbench, the shaft loading gantry 42 is arranged on a workbench, the shaft loading XYZ module 43 is arranged on the shaft loading gantry 42, the shaft picking element 44 is arranged on the shaft loading XYZ module 43, and the shaft loading XYZ module 43 is used to drive the shaft picking element 44 to grab the shaft assembly 20 from the shaft feeding frame 41 and place it on the jacking positioning groove. In this embodiment, the setting of the shaft feeding frame 41 realizes the orderly supply of the shaft assembly 20, effectively avoids the confusion and delay that may be caused by traditional manual loading, and ensures the continuity and stability of the production line. Secondly, the rotating shaft loading gantry 42, as a supporting structure, not only stably carries the rotating shaft loading XYZ module 43, but also optimizes the space utilization through its reasonable layout, making the entire loading process smoother and more compact. Furthermore, the rotating shaft loading XYZ module 43, as a core driving component, can accurately control every step of the rotating shaft material taking component 44 from the feeding rack to the positioning groove with its high-precision and high-speed three-dimensional movement ability, thereby realizing the fast and accurate grasping and placement of the rotating shaft assembly 20. Finally, the ingenious design of the rotating shaft material taking component 44 enables it to firmly clamp the rotating shaft assembly 20 while avoiding damage to the surface of the assembly, ensuring the quality and reliability of the cooling fan assembly.

[0051] See also Fig.11 As shown, the loading and clamping module 56 includes a clamping drive module 561 and a clamping shaft 562, and the clamping shaft 562 is used to clamp one end of the fan body 30 during assembly. Specifically, the loading and lifting module 57 includes a lifting drive module 572 and an assembly positioning member 573, and the lifting positioning groove 571 is set on the assembly positioning member 573, and the lifting drive module 572 is used to drive the assembly positioning member 573 to assemble toward the bottom shell 10. 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 position accuracy and stability of the fan during the installation process. This design not only avoids the shaking or misalignment of the fan during the assembly process, 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. At the same time, the jacking module 57 is installed to drive the assembly positioning member 573 toward the bottom shell 10 through the jacking driving module 572, thereby realizing the accurate positioning and assembly of the fan assembly. The provision of the jacking positioning groove 571 further enhances the guiding property and positioning accuracy of the assembly positioning member 573, so that the fan assembly can be accurately assembled on the bottom shell 10. This design not only simplifies the assembly process and reduces the difficulty of operation, but also significantly improves the assembly efficiency.

[0052] The upper cover loading mechanism 7 includes an upper cover conveyor line 71, an upper cover material taking XYZ module 72 and an upper cover grabbing module 73. The upper cover conveyor line 71 is used for conveying the cover plate. The upper cover grabbing module 73 is arranged on the upper cover XYZ module. The upper cover material taking XYZ module 72 is used to drive the upper cover grabbing module 73 to grab the cover plate on the conveyor line and place it on the assembly fixture 11 to be assembled with the bottom shell. In this embodiment, the upper cover conveyor line 71 accurately and efficiently conveys the cover plate, ensuring the continuity and stability of the assembly process and greatly improving the production efficiency. As the driving core, the upper cover material taking XYZ module 72 can accurately position the upper cover grabbing module 73 to the specified position on the conveyor line with its high-precision three-dimensional movement ability, thereby realizing the accurate grabbing of the cover plate. Driven by the upper cover material taking XYZ module 72, the upper cover grabbing module 73 stably and firmly grabs the cover plate and accurately places it on the assembly fixture 11 of the cooling fan. This process not only reduces manual operation errors, but also greatly improves the accuracy and reliability of assembly.

[0053] like Figures 1 to 11 As shown, a method for assembling a rotating shaft of a heat dissipation fan includes the automatic assembly equipment for the heat dissipation fan;

[0054] The method for assembling the rotating shaft of the cooling fan comprises the following steps:

[0055] Step S1, pre-assembly: the bottom shell 10 is placed on the assembly jig 11 and fixed, and then the fan body 30 is installed on the bottom shell 10, and the pre-installed positioning ring 302 cooperates with the pre-installed positioning groove 501 to achieve positioning between the fan body 30 and the bottom shell 10;

[0056] Step S2, height detection: the assembly turntable 1 drives the assembly fixture 11 to drive the bottom shell 10 and the fan body 30 to rotate, and rotate to the next station to detect the assembly height between the fan body 30 and the bottom shell 10 to confirm whether the pre-installed positioning ring 302 and the pre-installed positioning groove 501 are positioned and matched;

[0057] Step S3, loading the shaft assembly 20: the assembly turntable 1 drives the assembly fixture 11 to drive the bottom shell 10 and the fan body 30 to rotate and rotate to the next station. At this time, the shaft assembly 20 is positioned and loaded by the shaft loading mechanism, grabbed and placed on the top positioning groove 571, and then transferred to the bottom of the assembly fixture 11 under the action of the loading lifting module 52 and the loading pushing module 53, and opposite to the shaft fixing groove 101 of the bottom shell 10;

[0058] Step S4, shaft assembly: confirm that the lifting module 57 is installed opposite to the pressing module 56, and then install the lifting module 57 to lift the shaft assembly 20 from bottom to top to the bottom shell 10 fixed by the assembly fixture 11. At this time, install the pressing module 56 to press the fan body 30 so that one end of the rotating shaft 203 is interference fit with the connecting hole 303, and the fixed sleeve 201 at the other end is installed into the shaft fixing groove 101 and fixed to complete the shaft assembly.

[0059] This embodiment ensures accurate positioning between the fan body 30 and the bottom shell 10 by using the pre-assembly step (step S1) and the pre-installed positioning ring 302 and the pre-installed positioning groove 501. This step effectively avoids the misalignment problem in the subsequent assembly process and improves the assembly efficiency and the quality of the finished product. At the same time, the pre-assembly also makes the assembly relationship between the fan body 30 and the bottom shell 10 more stable, providing a strong guarantee for the subsequent steps. Secondly, the height determination detection step (step S2) drives the assembly jig 11 to rotate through the assembly turntable 1 to achieve accurate detection of the assembly height between the fan body 30 and the bottom shell 10. This step can timely discover the matching problem between the pre-installed positioning ring 302 and the pre-installed positioning groove 501, thereby avoiding quality risks caused by improper assembly height. At the same time, the height determination detection also provides an accurate reference for the subsequent feeding and assembly of the shaft assembly 20. Furthermore, the shaft assembly 20 feeding step (step S3) realizes automatic feeding and precise positioning of the shaft assembly 20 through the coordinated action of the shaft feeding mechanism, the lifting module and the propulsion module. This step not only improves the assembly efficiency, but also reduces the difficulty and error of manual operation, so that the shaft assembly 20 can be accurately and quickly placed under the assembly jig 11 and opposite to the shaft fixing groove 101 of the bottom shell 10. Finally, the shaft assembly step (step S4) realizes the precise assembly of the shaft assembly 20 by the cooperation of installing the jacking module 57 and installing the clamping module 56. In this process, one end of the rotating shaft 203 is interference fit with the connecting hole 303, and the fixed sleeve 201 at the other end is installed in the shaft fixing groove 101 and fixed, thereby ensuring the stability and reliability of the shaft assembly 20. At the same time, installing the clamping module 56 also presses the fan body 30, further enhancing the stability of the assembly structure.

[0060] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. An automatic assembly device for a cooling fan, characterized in that: The heat dissipation fan comprises a bottom shell, a rotating shaft assembly, a fan body and a cover plate, wherein a stator assembly is mounted on the bottom shell, a pre-installed positioning groove is arranged on the inner circumference of the stator assembly, the rotating shaft assembly comprises a fixed sleeve, a rotating shaft fixing part and a rotating shaft, the rotating shaft fixing part is arranged on the fixed sleeve, the rotating shaft is arranged on the rotating shaft fixing part, the rotating shaft fixing groove is arranged on the bottom shell, the fixed sleeve is arranged on the rotating shaft fixing groove, the fan body is provided with a connecting cavity, a rotor magnetic ring is arranged in the connecting cavity, a pre-installed positioning ring is arranged 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 arranged at one end of the connecting cavity, and one end of the rotating shaft is interference fit with the connecting hole; The automatic assembly equipment of the cooling fan includes a workbench, an assembly turntable, an assembly jig, a shell feeding mechanism, a fan feeding mechanism, a shaft feeding assembly, a shaft loading assembly, an upper cover loading mechanism and a blanking station, wherein the assembly turntable is arranged on the workbench, and the assembly jig is provided with multiple groups and arranged on the assembly turntable, and the assembly turntable is used to drive the assembly turntable to pass through the shell feeding mechanism, the fan feeding mechanism, the shaft feeding assembly, the shaft loading assembly, the upper cover loading mechanism and the blanking mechanism in sequence; the assembly jig is used to fix the bottom shell; the shell feeding mechanism is used to grab and place the bottom shell on the assembly jig, and the fan feeding mechanism is used to grab and place the fan on the bottom shell so that the pre-installed positioning ring cooperates with the pre-installed positioning groove, and the shaft loading assembly includes a loading bracket, a loading lifting module, a loading propulsion module, a loading upper arm, a loading lower arm, a loading clamping module and a loading jacking module, and the loading bracket is arranged on the workbench The loading and lifting module is arranged on the loading bracket, the loading pushing module is arranged on the loading and lifting module, the loading upper arm and the loading lower arm are both arranged on the loading pushing module, the loading pressing module is arranged on the loading upper arm, the loading lifting module is arranged on the loading lower arm, the loading pressing module is opposite to the loading lifting module, and the loading lifting module is provided with a lifting positioning groove, and the lifting positioning groove is used to place the rotating shaft assembly; during assembly, the pre-installed positioning ring cooperates with the pre-installed positioning groove, and the loading lifting module lifts the rotating shaft assembly from bottom to top to the bottom shell fixed by the assembly fixture. At this time, the loading and pressing module presses the fan body so that one end of the rotating shaft is interference fit with the connecting hole, and the fixed shaft sleeve at the other end is inserted into the rotating shaft fixing groove and fixed; the upper cover loading mechanism is used to grab the cover plate and place it on the upper side of the bottom shell, and buckle the cover plate on the bottom shell, and the unloading station is used for unloading the assembled cooling fan.

2. The automatic assembly equipment for cooling fans according to claim 1, characterized in that: The bottom shell is provided with an assembly fixing part, the rotating shaft fixing groove is provided on the assembly fixing part, the rotating shaft fixing groove is provided with an assembly positioning surface, and the fixed shaft sleeve is provided with a positioning plane. During assembly, the assembly positioning surface cooperates with the positioning plane to position and assemble the assembly direction of the fixed shaft sleeve; the lifting positioning groove is provided with a flat position that cooperates with the positioning plane to position the direction during assembly; the assembly jig is used to fix the bottom shell, and before the assembly turntable drives the assembly jig to enter the rotating shaft feeding component, the fan body is placed on the outer shell to match the pre-installed positioning ring of the fan outer shell with the pre-installed positioning groove.

3. The automatic assembly equipment for cooling fans according to claim 1, characterized in that: The assembly turntable includes a divider, a turntable drive motor and a rotating disc, wherein the turntable drive motor is used to drive the divider to drive the rotating disc to rotate, and the upper surface of the rotating disc is provided with a plurality of fixed positions in a circular array, and the assembly jig is provided on the fixed positions; The assembly jig includes a jig base, a product clamping module and a jig body. The jig base is used to fix the jig body. The jig body is provided with a product fixing position. The periphery of the product fixing position is provided with multiple positioning pins to fix the product on the jig base. The product clamping module is provided on the jig base to fix the product.

4. The automatic assembly equipment for cooling fans according to claim 1, characterized in that: The shell feeding mechanism includes a shell discharge platform, a shell picking XYZ module, a shell picking adjustment module and a shell feeding grabbing module. The shell discharge platform is used for placing and positioning the bottom shell; the shell picking adjustment module is arranged on the shell picking XYZ module, and the shell feeding grabbing module is arranged on the shell picking adjustment module; the shell feeding grabbing module is used for grabbing the bottom shell from the shell discharge platform, the shell picking adjustment module is used for adjusting the direction of the bottom shell grabbed by the shell feeding grabbing module, and the shell picking XYZ module is used for driving the shell picking adjustment module and driving the shell feeding grabbing module to move.

5. The automatic assembly equipment for cooling fans according to claim 1, characterized in that: The fan loading mechanism includes a fan discharge platform, a fan material picking XYZ module and a fan grabbing module. The fan discharge platform is used to place the fan body. The fan grabbing module is arranged on the fan material picking XYZ module. The fan material picking XYZ module is used to drive the fan grabbing module to grab the fan on the fan discharge platform and place it on the bottom shell on the assembly jig for assembly.

6. The automatic assembly equipment for cooling fans according to claim 1, characterized in that: A height-fixing pressing assembly is provided on one side of the rotating shaft feeding assembly, and the height-fixing pressing assembly includes a height-fixing bracket, a height-fixing driving module, a height-fixing detection element and a height-fixing detection plate. The height-fixing bracket is arranged on a workbench, the height-fixing driving module is arranged on the height-fixing bracket, the height-fixing detection element is arranged on the height-fixing driving module, and the height-fixing detection plate is arranged on the height-fixing detection element. The height-fixing driving module is used for driving the height-fixing detection element to drive the height-fixing detection plate to contact the fan body to ensure that the pre-installed positioning ring of the fan body cooperates with the pre-installed positioning groove in place.

7. The automatic assembly equipment for cooling fans according to claim 1, characterized in 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 arranged on a workbench, the rotating shaft feeding gantry is arranged on the workbench, the rotating shaft feeding XYZ module is arranged on the rotating shaft feeding gantry, the rotating shaft picking element is arranged on the rotating shaft feeding XYZ module, and 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 groove.

8. The automatic assembly equipment for cooling fans according to claim 1, characterized in that: The loading and clamping module includes a clamping drive module and a clamping shaft, and the clamping shaft is used to clamp one end of the fan body during assembly; the loading and lifting module includes a lifting drive module and an assembly positioning piece, and the lifting positioning groove is arranged on the assembly positioning piece, and the lifting drive module is used to drive the assembly positioning piece to be assembled toward the bottom shell.

9. The automatic assembly equipment for cooling fans according to claim 1, characterized in that: The upper cover loading mechanism includes an upper cover conveyor line, an upper cover material picking XYZ module and an upper cover grabbing module. The upper cover conveyor line is used for conveying the cover plate. The upper cover grabbing module is arranged on the upper cover XYZ module. The upper cover material picking XYZ module is used to drive the upper cover grabbing module to grab the cover plate on the conveyor line and place it on the assembly jig to assemble it with the bottom shell.

10. A method for assembling a rotating shaft of a heat dissipation fan, characterized in that: The automatic assembly device for cooling fans comprising any one of claims 1 to 9, The method for assembling the rotating shaft of the cooling fan comprises the following steps: Step S1, pre-assembly: the bottom shell is placed on an assembly jig and fixed, and then the fan body is installed on the bottom shell, and the pre-installed positioning ring is matched with the pre-installed positioning groove to achieve positioning between the fan body and the bottom shell; Step S2, height detection: the assembly turntable drives the assembly fixture to drive the bottom shell and the fan body to rotate, and rotate to the next station to detect the assembly height between the fan body and the bottom shell to confirm whether the pre-installed positioning ring and the pre-installed positioning groove are positioned and matched; Step S3, loading the shaft assembly: the assembly turntable drives the assembly jig to drive the bottom shell and the fan body to rotate and rotate to the next station. At this time, the shaft assembly is positioned and loaded by the shaft loading mechanism, grabbed and placed on the top positioning groove, and then transferred to the bottom of the assembly jig under the action of the loading lifting module and the loading pushing module, and is opposite to the shaft fixing groove of the bottom shell; Step S4, shaft assembly: confirm that the lifting module is installed opposite to the pressing module, then install the lifting module to lift the shaft assembly from bottom to top to the bottom shell fixed by the assembly fixture. At this time, install the pressing module to press the fan body so that one end of the rotating shaft is interference fit with the connecting hole, and the fixed shaft sleeve at the other end is inserted into the shaft fixing groove and fixed to complete the shaft assembly.

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