Automatic assembly equipment and method for cooling fan

Abstract

The present invention relates to the technical field of heat dissipation fan production, and in particular to an automatic assembly device and assembly method for heat dissipation fans, comprising 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 in multiple groups and is arranged on the assembly turntable; during assembly, a pre-installed positioning ring cooperates with a pre-installed positioning groove, and a lifting module is installed to lift the shaft assembly from bottom to top to a bottom shell fixed by the assembly jig, and at this time, a 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 present invention significantly improves the production quality and efficiency of the heat dissipation fan through efficient, accurate and stable assembly performance.

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, devices that convert electrical energy into mechanical energy (or vice versa), play a vital role in modern industry and daily life. From a professional perspective, motors operate primarily based on the principle of electromagnetic induction, with core components typically including a stator, rotor, and electromagnetic windings. A motor's encoder is a key sensor installed on the motor that converts mechanical motion parameters such as the motor shaft's rotational position, speed, and direction into electrical output signals. This conversion enables the control system to accurately monitor and adjust the motor's operating status, thereby achieving closed-loop feedback control.

[0003] Existing motor encoder mounting structures typically connect directly to the motor output shaft. This direct connection offers poor structural stability, affects sensing accuracy, and results in poor compatibility and flexibility. Therefore, a new design for the existing encoder mounting structure is needed. Summary of the Invention

[0004] To address these issues, the present invention significantly improves the production quality and efficiency of cooling fans through efficient, accurate, and stable assembly performance. Furthermore, its excellent adaptability and flexibility provide strong support for 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, the bottom shell is mounted with a stator assembly, the inner circumference of the stator assembly is provided with a pre-installed positioning groove, the rotating shaft assembly comprises a fixed shaft sleeve, a rotating shaft fixing piece and a rotating shaft, the rotating shaft fixing piece is provided on the fixed shaft sleeve, the rotating shaft is provided on the rotating shaft fixing piece, the bottom shell is provided with a rotating shaft fixing groove, the fixed shaft sleeve is provided on the rotating shaft fixing groove, the fan body is provided with a connecting cavity, a rotor magnetic ring is provided in the connecting cavity, a pre-installed positioning ring is provided 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. The assembly turntable is arranged on the workbench, and the assembly jig is provided with multiple groups and is arranged on the assembly turntable. 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, 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 pressing module and a loading lifting module, and the loading bracket is arranged on the workbench The upper cover is mounted on the support frame, and the lower cover is mounted on the support frame. The upper cover is mounted on the support frame, and the lower cover is mounted on the support frame. The upper cover is mounted on the support frame, and the lower cover is mounted on the support frame.

[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 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 shaft feeding assembly, 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.

[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 multiple fixed positions in a circular array, and the assembly jig is set on the fixed position.

[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 multiple 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 loading mechanism includes a shell discharge platform, a shell material picking XYZ module, a shell material picking adjustment module and a shell loading grabbing module, the shell discharge platform is used for placing and positioning the bottom shell; the shell material picking adjustment module is arranged on the shell material picking XYZ module, and the shell loading grabbing module is arranged on the shell material picking adjustment module; the shell loading grabbing module is used to grab the bottom shell from the shell discharge platform, the shell material picking adjustment module is used to adjust the direction of the bottom shell grabbed by the shell loading grabbing module, and the shell material picking XYZ module is used to drive the shell material picking adjustment module and drive the shell loading 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, and 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.

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

[0013] A further improvement to the above scheme is that the shaft loading assembly includes a shaft feeding rack, a shaft loading gantry, a shaft loading XYZ module and a shaft picking element, the shaft feeding rack is set on the workbench, the shaft loading gantry is set on the workbench, the shaft loading XYZ module is set on the shaft loading gantry, the shaft picking element is set on the shaft loading XYZ module, and the shaft loading 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 jacking 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 member, and the lifting positioning groove is provided on the assembly positioning member, and the lifting drive module is used to drive the assembly positioning member 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 grasping module. The upper cover conveyor line is used for conveying the cover plate, and the upper cover grasping module is arranged on the upper cover XYZ module. The upper cover material picking XYZ module is used to drive the upper cover grasping module to grasp the cover plate on the conveyor line and place it on the assembly jig for snap-on assembly with the bottom shell.

[0016] A method for assembling a rotating shaft of a cooling fan, comprising the automatic assembly equipment for the cooling fan,

[0017] The heat dissipation fan shaft assembly method includes 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 jig to rotate the bottom shell and the fan body, and then rotates 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 rotate the bottom shell and the fan body 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 aligned with 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 jig. 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 to existing cooling fan assembly systems, this invention achieves fully unmanned operation, from housing loading to final unloading, through a highly integrated automated design. An assembly turntable installed on the workbench works in conjunction with multiple sets of assembly jigs to ensure the orderly execution of each assembly step. The turntable not only drives the assembly jigs through the various loading and assembly mechanisms, but also, through precise positioning and rotational control, ensures precise docking between components, thereby improving assembly accuracy and efficiency. Advanced gripping and placement technologies are incorporated into the housing and fan loading mechanisms to ensure accurate placement of the base housing and fan. In particular, the fan loading mechanism precisely positions the fan on the base housing, ensuring a tight fit between the pre-installed locating ring and pre-installed locating groove, laying a solid foundation for subsequent assembly steps. This design not only improves assembly accuracy but also effectively prevents assembly errors caused by improper operation. The shaft assembly assembly ensures precise positioning and installation through the coordinated operation of the lifting module, the propulsion module, the upper arm, and the lower arm. In particular, the relative placement of the compression and lift modules, as well as the design of the lift-up positioning grooves, enable the shaft assembly to be lifted upward from the bottom onto the base housing secured by the assembly jig. This simultaneously ensures the fan body is compressed, with one end of the rotating shaft forming an interference fit with the connection hole, while the fixed shaft at the other end is inserted into the shaft fixing groove for securement. This process not only ensures efficient and precise shaft installation, but also ensures stable performance and reliable quality of the assembled cooling fan. Furthermore, the design of the upper cover installation mechanism demonstrates a high degree of automation and intelligence. It precisely grasps and places the cover onto the upper side of the base housing, snapping it onto the base housing to complete the assembly of the cooling fan. The automation of this step not only improves assembly efficiency but also avoids problems such as cover damage or loose fastening caused by improper operation. Finally, the design of the unloading station fully considers the balance between production efficiency and product quality. It automatically unloads the assembled cooling fan, facilitating 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 heat dissipation fan shaft assembly method, 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, improving 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 detection step (step S2) drives the assembly jig to rotate by the assembly turntable to achieve accurate detection of the assembly height between the fan body and the bottom shell. This step can promptly detect 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 detection also provides an accurate reference for the subsequent loading and assembly of the shaft assembly. Furthermore, the shaft assembly loading step (step S3) realizes 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 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 lifting module and installing the pressing 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 pressing 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 the 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 This 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 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] Figure 9 for Figure 5 Schematic diagram of the structure of the shaft loading component of the automatic assembly equipment for cooling fans;

[0034] Figure 10 for Figure 5 Schematic diagram of the structure of the fixed height pressing component of the automatic assembly equipment for cooling fans;

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

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

[0037] Description of the accompanying drawings: bottom shell 10, rotating shaft fixing groove 101, assembly fixing member 102, assembly positioning surface 103, rotating shaft assembly 20, fixing sleeve 201, positioning plane 2011, rotating 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] Assembly turntable 1, divider 12, turntable drive motor 13, rotating disc 14, assembly 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 material picking XYZ module 22, shell material picking adjustment module 23, shell feeding grabbing module 24, fan feeding mechanism 3, fan discharge platform 31, fan material 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] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[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 referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[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 this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0042] like Figures 1 to 4As shown, in one embodiment of the present invention, a cooling fan is provided, comprising a bottom shell 10, a rotating 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 mounted on the bottom shell 10, and a pre-installed positioning groove 501 is provided on the inner periphery of the stator assembly 50, the rotating shaft assembly 20 comprises a fixed shaft sleeve 201, a rotating shaft fixing part 202 and a rotating shaft 203, the rotating shaft fixing part 202 is provided on the fixed shaft sleeve 201, and the rotating shaft 203 is provided on the rotating shaft fixing part 202, the bottom shell 10 is provided with a rotating shaft fixing groove 101, the fixed shaft sleeve 201 is provided 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, thereby achieving precise positioning of the fan assembly during installation. 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 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 cooling fan includes a workbench, an assembly turntable 1, an assembly fixture 11, a shell feeding mechanism 2, a fan feeding mechanism 3, a shaft feeding component 4, a shaft loading component 5, an upper cover loading mechanism 7 and a blanking station 8. The assembly turntable 1 is arranged on the workbench, and the assembly fixture 11 is provided with multiple groups and is arranged on the assembly turntable 1. 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 component 4, the shaft loading component 5, the upper cover loading mechanism 7 and the unloading station 8 in sequence. Component 4, shaft loading component 5, upper cover loading mechanism 7 and unloading mechanism; the assembly jig 11 is used to fix the bottom shell; the shell loading mechanism 2 is used to grab the bottom shell and place it on the assembly jig 11, the fan loading mechanism 3 is used to grab the fan and place it on the bottom shell so that the pre-installed positioning ring matches the pre-installed positioning groove, the shaft loading component 5 includes a loading bracket, a loading lifting module, a loading propulsion 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 propulsion module is arranged on the loading lifting module, the loading upper arm and the loading lower arm are both arranged on the loading propulsion 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 group 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 the bottom up to the bottom shell fixed by the assembly jig 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 the cover plate and place it on the upper side of the bottom shell, and snap the cover plate onto the bottom shell. The unloading station 8 is used to unload the assembled cooling fan. Through a highly integrated automated design, the present invention realizes unmanned operation of the cooling fan from the outer shell loading to the final unloading. The assembly turntable 1 set on the workbench works in conjunction with multiple sets of assembly jigs 11 to ensure the orderly progress of each assembly step. The assembly turntable 1 not only drives the assembly jig 11 to pass through each loading and assembly mechanism in sequence, but also achieves precise docking between each component through precise positioning and rotation control, thereby improving assembly accuracy and efficiency. The design of the housing loading mechanism 2 and the fan loading mechanism 3 utilizes advanced gripping and placement technology to ensure accurate placement of the bottom housing and fan. In particular, the fan loading mechanism 3 precisely positions the fan on the bottom housing, ensuring a tight fit between the pre-installed positioning ring and the pre-installed positioning groove, laying a solid foundation for subsequent assembly steps. This design not only improves assembly accuracy but also effectively prevents assembly errors caused by improper operation. The shaft assembly 5 ensures precise positioning and installation of the shaft assembly through the coordinated operation of the lifting module, the propulsion module, the upper arm, and the lower arm.In particular, the relative placement of the compression and lift modules, as well as the design of the lift-up positioning grooves, enable the shaft assembly to be lifted upward from the bottom onto the base housing secured by the assembly jig 11, while simultaneously ensuring that the fan body is compressed. One end of the rotating shaft has an interference fit with the connecting hole, while the fixed shaft at the other end is inserted into the shaft fixing groove and secured. This process not only ensures efficient and precise installation of the shaft, but also ensures stable performance and reliable quality of the assembled cooling fan. Furthermore, the design of the upper cover installation mechanism 7 demonstrates a high degree of automation and intelligence. It precisely grasps and places the cover plate on the upper side of the base housing and snaps it onto the base housing, completing the assembly of the cooling fan. The automation of this step not only improves assembly efficiency but also avoids problems such as cover damage or loose fastening caused by improper operation. Finally, the design of the unloading station 8 fully considers the balance between production efficiency and product quality. It automatically unloads the assembled cooling fan, facilitating 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. 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 the fixed sleeve 201 in its assembly direction. 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 providing the assembly fixture 102 on the bottom shell 10 and providing 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 precisely cooperates with the positioning plane 2011 on the fixed sleeve 201. This design ensures the directional accuracy of the fixed sleeve 201 during installation, effectively avoiding the risk of performance degradation or damage due to incorrect assembly direction. Furthermore, the flat position within the jacking 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 accuracy of the cooling fan, but also significantly shortens the assembly time and reduces production costs.

[0045] See 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 rotating shaft loading assembly 4, the fan body 30 is placed on the outer shell to match the pre-installed positioning ring 302 of the fan 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 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, ensuring the stability and accuracy of the entire assembly process. The carefully designed product fixing position 1131 on the jig body 113, combined with the multiple positioning pins 1132 arranged on the periphery, can accurately position the fan body 30 on the outer shell, effectively avoiding 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 product replacement.

[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 rotate the rotating disc 14. The upper surface of the rotating disc 14 is provided with multiple fixed positions in a circular array, and the assembly jig 11 is set on the fixed positions. In this embodiment, the turntable drive motor 13 serves as the core power source, precisely driving the divider 12, which in turn drives 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 multiple fixed positions in a circular array. This layout not only optimizes space utilization, but also ensures that each cooling fan assembly is treated uniformly and stably during the assembly process. The provision of fixed positions further ensures that the assembly jig 11 can be accurately installed in the designated position, thereby ensuring the consistency and reliability of the cooling fan assembly. In addition, the assembly turntable 1 is compact in structure, simple to operate, and easy to integrate into existing automated production lines. 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 loading mechanism 2 includes a shell discharge platform 21, a shell picking XYZ module 22, a shell picking adjustment module 23, and a shell loading grabbing module 24. The shell discharge platform 21 is used to position the bottom shell; the shell picking adjustment module 23 is mounted on the shell picking XYZ module 22, and the shell loading grabbing module 24 is mounted on the shell picking adjustment module 23. The shell loading grabbing module 24 is used to grab the bottom shell from the shell discharge platform 21. The shell picking adjustment module 23 is used to adjust the direction of the bottom shell grabbed by the shell loading grabbing module 24. The shell picking XYZ module 22 is used to drive the shell picking adjustment module 23 and drive the shell loading grabbing module 24 to move. In this embodiment, the shell discharge platform 21 provides a stable and precise positioning reference for the bottom shell of the cooling fan, ensuring smooth subsequent grabbing and assembly operations. The housing retrieving XYZ module 22, with its high-precision three-dimensional motion capabilities, flexibly delivers the housing retrieving and adjusting module 23 and the housing loading and grabbing module 24 to designated locations, significantly enhancing assembly flexibility. The housing retrieving and adjusting module 23 plays a crucial role in adjusting the orientation of the bottom housing, ensuring accurate alignment with the cooling fan assembly position and avoiding assembly errors caused by misalignment. The housing loading and grabbing module 24, with its precise gripping capabilities, ensures stable transfer from the unloading platform to the assembly position, ensuring the stability of the bottom housing during assembly.

[0048] The fan loading mechanism 3 includes a fan discharge platform 31, a fan material collection XYZ module 32, and a fan grabbing module 33. The fan discharge platform 31 is used to place the fan body, and the fan grabbing module 33 is arranged on the fan material collection XYZ module 32. The fan material collection XYZ module 32 is used to drive the fan grabbing module 33 to grab the fan on the fan discharge platform 31 and place it on the bottom shell of the assembly jig 11 for assembly. In this embodiment, the fan discharge platform 31 stably places the fan body, providing a reliable material foundation for subsequent operations. As the core driving component, the fan material collection XYZ module 32, with its high-precision three-dimensional movement capability, can accurately position and drive the fan grabbing module 33. This design not only improves assembly accuracy but also significantly improves production efficiency. Driven by the fan material collection XYZ module 32, the fan grabbing module 33 can flexibly grab the fan from the fan discharge platform 31 and accurately place it on the bottom shell of the assembly jig 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 Figure 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 set on the workbench, the height-fixing driving module 62 is set on the height-fixing bracket 61, the height-fixing detection element 63 is set on the height-fixing driving module 62, and the height-fixing detection plate 64 is set 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 cooperates with the pre-installed positioning groove 501 in place. In this embodiment, the height-fixing bracket 61 is firmly mounted on the workbench, providing 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. During this process, the height detection element 63 plays a crucial monitoring role, providing real-time sensing and feedback on the contact status between the height detection plate 64 and the fan body 30. When the height detection plate 64 makes contact with the fan body 30, the height drive module 62, through a precise feedback mechanism, promptly adjusts its driving force, 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 fit tightly with the pre-installed positioning groove 501, but also effectively prevents misalignment and deviation during assembly.

[0050] See Figure 8As shown, the shaft loading assembly 4 includes a shaft feeding rack 41, a shaft loading gantry 42, a shaft loading XYZ module 43, and a shaft picking element 44. The shaft feeding rack 41 is set on a workbench, the shaft loading gantry 42 is set on the workbench, the shaft loading XYZ module 43 is set on the shaft loading gantry 42, and the shaft picking element 44 is set on the shaft loading XYZ module 43. 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 rack 41 and place it on the lifting positioning groove. In this embodiment, the provision of the shaft feeding rack 41 realizes the orderly supply of the shaft assembly 20, effectively avoiding the confusion and delay that may be caused by traditional manual loading, and ensuring the continuity and stability of the production line. Secondly, the rotating shaft loading gantry 42, as a supporting structure, not only stably supports the rotating shaft loading XYZ module 43, but also optimizes space utilization through its rational layout, making the entire loading process smoother and more compact. Furthermore, the rotating shaft loading XYZ module 43, as the core drive component, with its high-precision, high-speed three-dimensional movement capabilities, can precisely control every step of the rotating shaft picking element 44 from the feed rack to the positioning slot, achieving rapid and accurate grasping and placement of the rotating shaft assembly 20. Finally, the ingenious design of the rotating shaft picking element 44 enables it to firmly clamp the rotating shaft assembly 20 while avoiding damage to the component surface, ensuring the quality and reliability of the cooling fan assembly.

[0051] See Figure 11 As shown, the loading and pressing module 56 includes a pressing drive module 561 and a pressing shaft 562, and the pressing shaft 562 is used to press 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 provided on the assembly positioning member 573, and the lifting drive module 572 is used to drive the assembly positioning member 573 to be assembled toward the bottom shell 10. In this embodiment, the synergistic effect of the pressing drive module 561 and the pressing shaft 562 can effectively and stably press 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 insertion of the lifting module 57 drives the assembly positioning member 573 toward the bottom case 10 through the lifting drive module 572, achieving precise positioning and assembly of the fan assembly. The provision of the lifting positioning groove 571 further enhances the guidance and positioning accuracy of the assembly positioning member 573, allowing the fan assembly to be accurately assembled to the bottom case 10. This design not only simplifies the assembly process and reduces operational difficulty, but also significantly improves assembly efficiency.

[0052] The upper cover loading mechanism 7 comprises an upper cover conveyor line 71, an upper cover retrieving XYZ module 72, and an upper cover grabbing module 73. The upper cover conveyor line 71 is used to transport the cover panels, and the upper cover grabbing module 73 is mounted on the upper cover XYZ module. The upper cover retrieving XYZ module 72 is used to drive the upper cover grabbing module 73 to grab the cover panels along the conveyor line and place them on the assembly jig 11 for fastening and assembly with the bottom shell. In this embodiment, the upper cover conveyor line 71 accurately and efficiently transports the cover panels, ensuring the continuity and stability of the assembly process and significantly improving production efficiency. The upper cover retrieving XYZ module 72, as the driving core, leverages its high-precision three-dimensional movement capabilities to accurately position the upper cover grabbing module 73 to a designated position on the conveyor line, achieving precise capture of the cover panels. Driven by the upper cover retrieving XYZ module 72, the upper cover grabbing module 73 stably and securely grabs the cover panels and precisely places them on the cooling fan assembly jig 11. 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 heat dissipation fan shaft assembly method includes the following steps:

[0055] Step S1, pre-assembly: Place the bottom shell 10 on the assembly jig 11 and fix it, then install the fan body 30 on 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;

[0056] Step S2, height detection: The assembly turntable 1 drives the assembly jig 11 to rotate the bottom shell 10 and the fan body 30, and rotates 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 is positioned and matched with the pre-installed positioning groove 501;

[0057] Step S3, loading the shaft assembly 20: The assembly turntable 1 drives the assembly jig 11 to rotate the bottom shell 10 and the fan body 30 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 lifting positioning groove 571, and then transferred to the bottom of the assembly jig 11 under the action of the loading lifting module 52 and the loading pushing module 53, and aligned with 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, then install the lifting module 57 to lift the shaft assembly 20 from the bottom to the 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 shaft 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 through the pre-assembly step (step S1), utilizing the pre-installed positioning ring 302 and the pre-installed positioning groove 501. This step effectively avoids misalignment during the subsequent assembly process, improving assembly efficiency and finished product quality. Pre-assembly also stabilizes the assembly relationship between the fan body 30 and the bottom shell 10, providing a strong guarantee for the subsequent steps. Secondly, the height detection step (step S2) accurately detects the assembly height between the fan body 30 and the bottom shell 10 by rotating the assembly jig 11 via the assembly turntable 1. This step can promptly detect any problems with the fit between the pre-installed positioning ring 302 and the pre-installed positioning groove 501, thereby avoiding quality risks caused by improper assembly height. Furthermore, the height detection also provides an 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 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 installing the lifting module 57 and installing the pressing 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 pressing module 56 also presses the fan body 30, further enhancing the stability of the assembly structure.

[0060] The above embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An automatic assembly device for a cooling fan, characterized by: The heat dissipation fan includes a bottom shell, a rotating shaft assembly, a fan body and a cover plate, wherein a stator assembly is mounted on the bottom shell, and a pre-installed positioning groove is provided on the inner circumference of the stator assembly, the rotating shaft assembly includes a fixed shaft sleeve, a rotating shaft fixing piece and a rotating shaft, the rotating shaft fixing piece is arranged on the fixed shaft sleeve, the rotating shaft is arranged on the rotating shaft fixing piece, a rotating shaft fixing groove is provided on the bottom shell, the fixed shaft sleeve is arranged on the rotating shaft fixing groove, the fan body is provided with a connecting cavity, a rotor magnetic ring is provided in the connecting cavity, a pre-installed positioning ring is provided 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; 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. The assembly turntable is arranged on the workbench, and the assembly jig is provided with multiple groups and is arranged on the assembly turntable. 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, 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 pressing module and a loading lifting module, and the loading bracket is arranged on the workbench The upper cover is mounted on the support frame, and the lower cover is mounted on the support frame. The upper cover is mounted on the support frame, and the lower cover is mounted on the support frame. The upper cover is mounted on the support frame, and the lower cover is mounted on the support frame.

2. The automatic assembly equipment for cooling fans according to claim 1, characterized in that: The bottom shell is provided with an assembly fixing piece, the rotating shaft fixing groove is provided on the assembly fixing piece, 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 assembly, 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. 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 circumferential 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 to grab the bottom shell from the shell discharge platform, the shell picking adjustment module is used to adjust the direction of the bottom shell grabbed by the shell feeding grabbing module, and the shell picking XYZ module is used to drive the shell picking adjustment module and drive 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 set on a workbench, the height-fixing driving module is set on the height-fixing bracket, the height-fixing detection element is set on the height-fixing driving module, and the height-fixing detection plate is set on the height-fixing detection element. 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 is in place with the pre-installed positioning groove.

7. The automatic assembly equipment for cooling fans according to claim 1, characterized in that: The rotary shaft loading assembly includes a rotary shaft feeding rack, a rotary shaft loading gantry, a rotary shaft loading XYZ module and a rotary shaft picking element. The rotary shaft feeding rack is set on the workbench, the rotary shaft loading gantry is set on the workbench, the rotary shaft loading XYZ module is set on the rotary shaft loading gantry, the rotary shaft picking element is set on the rotary shaft loading XYZ module, and the rotary shaft loading 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 jacking positioning groove.

8. The automatic assembly equipment for cooling fans according to claim 1, characterized in that: The loading and pressing module includes a pressing drive module and a pressing shaft, and the pressing shaft is used to press one end of the fan body during assembly; the loading and lifting module includes a lifting drive module and an assembly positioning member, and the lifting positioning groove is provided on the assembly positioning member, and the lifting drive module is used to drive the assembly positioning member 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 be assembled 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 according to any one of claims 1 to 9 is provided. The heat dissipation fan shaft assembly method includes 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 jig to rotate the bottom shell and the fan body, and then rotates 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 rotate the bottom shell and the fan body 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 aligned with 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 jig. 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.

Images