Motor assembly apparatus for assembling a motor

Abstract

The application discloses a motor assembling device for assembling a motor, comprising: a first pressing device, comprising an end cover pressing assembly for installing a stator assembly and a front end cover, and a first detection assembly for detecting the pressing state of the stator assembly and the front end cover; a second pressing device, comprising a bearing discharging assembly for providing bearings and a bearing pressing assembly for installing the bearings to the front end cover; a third pressing device, comprising a collar discharging assembly for providing collars and a collar pressing assembly for installing the collars to bearing chambers; a fourth pressing device, a rotor pressing assembly for pressing the stator assembly and a rotor assembly; a control device for judging the pressing state of the stator assembly and the front end cover according to input information of the first detection assembly; and an indicating device for indicating the result of the control device. The first detection assembly has a displacement detection mode, the first detection assembly comprises a first displacement sensor, and the control device is connected with at least the first displacement sensor. The motor assembling device has high assembling efficiency and low cost.

Description

Technical Field

[0001] This application relates to the field of manufacturing and assembly, specifically to a motor assembly device for assembling motors. Background Technology

[0002] With the development of industrial technology, the application fields of electric motors are becoming increasingly wider. Industries such as chemical engineering, construction, home appliances, power generation, and power tools are experiencing a surge in demand for motors, thus necessitating an increase in production capacity. Currently, the cost of traditional manual assembly line processing methods is gradually increasing. Furthermore, under traditional production methods, problems such as untimely collection of production information, inefficient workflow, and inaccurate monitoring and recording of the production process lead to lagging production management and increased product quality control costs. The labor costs required for this type of production are high, production efficiency is low, and the yield rate is far lower than that of automated production.

[0003] This section provides background information related to this application, which is not necessarily prior art. Utility Model Content

[0004] One object of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, one object of this application is to provide a motor assembly device for assembling motors that has high assembly efficiency, low cost, and high product yield.

[0005] To achieve the above objectives, this application adopts the following technical solution: A motor assembly device for assembling an electric motor, the motor comprising: a stator assembly, a rotor assembly, a front end cover, bearings, and retaining rings, characterized in that the motor assembly device comprises: a frame; a first pressing device, including an end cover pressing assembly for mounting the stator assembly and the front end cover, and a first detection assembly for detecting the pressing state of the stator assembly and the front end cover; a second pressing device, including a bearing ejection assembly for providing bearings and a bearing pressing assembly for installing bearings into a bearing chamber of the front end cover; a third pressing device, including a retaining ring ejection assembly for providing retaining rings and a retaining ring pressing assembly for installing retaining rings into retaining ring grooves in the bearing chamber; a fourth pressing device, a rotor pressing assembly for pressing the assembled stator assembly, including at least the stator assembly, the front end cover, bearings, and retaining rings, to the rotor assembly; a control device for determining the pressing state of the stator assembly and the front end cover based on input information from the first detection assembly; and an indicating device connected to the control device to indicate the determination result of the control device. The first detection assembly has at least a displacement detection mode, includes a first displacement sensor, and the control device is at least connected to the first displacement sensor.

[0006] In some embodiments, the control device determines the press-fitting status of the stator assembly and the front end cover based on the input information from the first displacement sensor.

[0007] In some embodiments, the first detection component further includes a pressure detection mode, and the first detection component can selectively determine a pressure detection mode and a displacement detection mode.

[0008] In some embodiments, the first detection component further includes a pressure sensor, and the control device determines the press-fitting status of the stator assembly and the front end cover based on the input information from the pressure sensor.

[0009] In some embodiments, the first detection component further includes a pressure sensor, and the control device determines the press-fitting status of the stator assembly and the front end cover based on the input information of the pressure sensor and the input information of the first displacement sensor.

[0010] In some embodiments, the third pressing device includes a second displacement sensor for detecting the position of the retaining ring.

[0011] In some embodiments, the third pressing device further includes a storage component, including a testing station for placing the stator assembly and a storage drive component for driving the stator assembly from the testing station to the storage station. When the stator assembly is in a defective state, the storage drive component drives the stator assembly to move to the storage station.

[0012] In some embodiments, a shifting mechanism is further included to move a qualified stator assembly to a fourth pressing device, the shifting mechanism being disposed between the storage component and the fourth pressing device.

[0013] In some embodiments, the fourth pressing device includes: a shifting mechanism, a positioning seat, a rotor pneumatic chuck, a drive mechanism, and a pressing head. The shifting mechanism includes a gripping device for gripping the stator assembly from the third pressing device to the positioning seat. The rotor drive chuck includes a chuck body and jaws. The chuck body includes a centering mechanism. The jaws have a jaw surface shape adapted to the rotor assembly. The pressing head is connected to the drive mechanism to be driven to move downward.

[0014] In some embodiments, the rotor-operating trolley and rotor-grabbing device include a support platform for placing rotors and a robotic arm for gripping rotor assemblies to a rotor pneumatic chuck.

[0015] The advantages of this application are: the automation of the motor assembly process reduces manufacturing costs, and the detection of product qualification by the first inspection component improves the product yield. Attached Figure Description

[0016] Figure 1 This is a perspective view of a motor according to an embodiment of this application; Figure 2 yes Figure 1 Exploded view of the motor in the image; Figure 3This is a plan view of a motor assembly device according to an embodiment of this application; Figure 4 yes Figure 3 A 3D view of the motor assembly equipment in the image; Figure 5 yes Figure 4 A perspective view of the first pressing device in the process; Figure 6 yes Figure 4 A connection diagram of some electrical control modules in the motor assembly equipment; Figure 7 yes Figure 4 Connection diagram of the first pressing device and the second pressing device in the process; Figure 8 yes Figure 4 A perspective view of the second pressing device in the middle; Figure 9 yes Figure 4 Connection diagram of the second pressing device, the third pressing device, and the storage component; Figure 10 yes Figure 4 A perspective view of the third pressing device in the middle; Figure 11 yes Figure 9 A 3D view of the storage components in the image; Figure 12 yes Figure 1 Connection diagram of the storage component and the fourth press-fitting device; Figure 13 yes Figure 1 A three-dimensional view of the fourth pressing device and the rotor gripping equipment in the diagram; Figure 14 yes Figure 1 A three-dimensional view of the fourth pressing device and the motor unloading equipment in the middle; Figure 15 yes Figure 1 A 3D view of the rotor gripping device, rotor trolley, and rotor pushing device. Detailed Implementation

[0017] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0018] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0019] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0020] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0021] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0022] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0023] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0024] In this application, the terms "controller," "processor," "central processing unit," "CPU," and "MCU" are used interchangeably. When using the unit "controller," "processor," "central processing unit," "CPU," or "MCU" to perform a specific function, unless otherwise stated, these functions may be performed by a single or multiple of the aforementioned units.

[0025] In this application, the terms "device," "module," or "unit" are used to describe devices that can be implemented in hardware or software to perform a specific function.

[0026] In this application, the terms “calculation,” “judgment,” “control,” “determine,” “identify,” etc., refer to the operation and process of a computer system or similar electronic computing device (e.g., controller, processor, etc.).

[0027] Figure 1 The image shown is a perspective view of a motor 100. Figure 2 yes Figure 1 An exploded view of motor 100 in the image. Figure 1 and Figure 2 As shown, the motor 100, as the power unit in an electric tool, is essentially the heart of the tool; therefore, the stability and reliability of the motor 100 significantly affect the service life of the electric tool. Furthermore, the stability and reliability of the motor 100 are influenced by the motor assembly device that mounts its various components. Therefore, this application provides a... Figure 3 The motor assembly equipment 200 shown.

[0028] like Figure 1 and Figure 2As shown, the motor 100 includes a rotor assembly 11 and a stator assembly 12 for energy conversion and power output. The rotor assembly 11, as the core rotating component of the motor 100, includes a rotor shaft 111 that not only provides structural support for the entire rotor assembly 11 but also plays a crucial role in transmitting torque, outputting mechanical energy converted from electromagnetic energy. The rotor assembly 11 achieves rotational motion through electromagnetic interaction with the stator assembly 12, thereby driving the associated equipment. The stator assembly 12 includes a stator core 121 and coil windings 122. The stator core 121 serves two purposes: firstly, it acts as a magnetic conductor, providing a low magnetic reluctance path for the magnetic field; secondly, it provides a mounting and positioning foundation for the coil windings 122, using its own toothed structure to circumferentially and radially limit the coil windings 122. The coil windings 122, as a key actuator for electromagnetic induction, generate a rotating magnetic field when an alternating current is applied. This magnetic field interacts with the rotor assembly 11 to generate electromagnetic torque, thereby driving the rotor assembly 11 to rotate relative to the stator assembly 12. The motor 100 also includes a front cover 13, a bearing 14, and a retaining ring 15. The front cover 13 serves as the encapsulation and support component for the front end of the motor 100. Its inner side has a bearing chamber for mounting the bearing 14. This bearing chamber forms an interference fit or transition fit with the outer ring of the bearing 14 through a preset dimensional tolerance, achieving radial positioning of the bearing 14 within the front cover 13. The bearing 14 serves as a rotational support component for the rotor shaft 111. Its inner ring forms a tight fit with the journal portion of the rotor shaft 111, rotating synchronously with the rotor shaft 111. Its outer ring is fixedly fitted with the bearing chamber of the front cover 13, maintaining a stationary state. The bearing 14 effectively reduces the frictional resistance during the rotation of the rotor shaft 111, while simultaneously bearing the radial and axial loads generated by the rotor assembly 11, ensuring that the rotor shaft 111 rotates smoothly with a preset coaxiality. The retaining ring 15 serves as an axial limiting component for the bearing 14. It is made of elastic material and is fixedly installed by embedding into a retaining ring groove preset in the inner wall of the bearing chamber of the front cover 13. One end face of the retaining ring 15 abuts against the axial end face of the outer ring of the bearing 14, forming a rigid constraint on the bearing 14 in the axial direction. This can effectively limit the axial displacement of the bearing 14 caused by the axial movement of the rotor assembly 11 or the fluctuation of the working load, thereby ensuring the fitting accuracy between the bearing 14 and the rotor shaft 111 and the front end cover 13, and maintaining the overall stability of the motor 100 operation.

[0029] For ease of description of the embodiments of this application, the following are also defined: Figure 3 and Figure 4 The directions shown are up, down, left, right, front, and back.

[0030] As shown in Figures 3 and 4, the motor assembly equipment 200 in this embodiment includes a frame 201 and a first assembly line 202 and a second assembly line 203 that cooperate with each other. The two assembly lines realize the flow of workpieces through a conveying mechanism, thereby forming a continuous motor assembly process. The frame 201 is used to support the first assembly line 202 and the second assembly line 203.

[0031] The first assembly line 202 is mainly used to integrate the stator assembly 12 with the front end cover 13, bearing 14, and retaining ring 15, ultimately forming a stator assembly that can be used for subsequent assembly. The first assembly line 202 is equipped with a first pressing device 300, a second pressing device 400, and a third pressing device 500 sequentially along the workpiece conveying direction. Each device is connected to the others via at least one shifting mechanism to achieve precise workpiece transfer. Multiple shifting mechanisms can be used, with at least one shifting mechanism between each pair of adjacent pressing devices to allow workpieces to move between them. The shifting mechanisms can include conveyor belts or mechanical tracks, etc., and are not specifically limited.

[0032] The second assembly line 203 is used to press-fit the stator assembly and rotor assembly 11 produced by the first assembly line 202 to form a complete motor 100. The second assembly line 203 includes a fourth press-fitting device 600, which is used to press-fit the stator assembly and rotor assembly 11.

[0033] The first pressing device 300, the second pressing device 400, the third pressing device 500, and the fourth pressing device 600 are arranged sequentially from front to back on the frame 201.

[0034] like Figures 4 to 7 As shown, the first pressing device 300 includes an end cover pressing assembly 31 for installing the stator assembly 12 and the front end cover 13, and a first detection assembly 32 for detecting the pressing status of the stator assembly 12 and the front end cover 13.

[0035] The end cap pressing assembly 31 includes a first drive mechanism 311, a first pressing head 312, a first positioning seat 313, and a first transfer mechanism 314. The first positioning seat 313 serves as a pre-assembly station for the first pressing device 300, used to position the pre-assembled stator assembly 12 and front end cap 13. "Pre-assembly" here refers to the worker manually inserting the stator assembly 12 into the front end cap 13 before the first pressing device 300 presses and fixes the stator assembly 12 and front end cap 13. At this point, the stator assembly 12 and front end cap 13 are only in a preliminary fit, with a certain assembly gap between them. The first pressing device 300 must then press and fix the gap to eliminate it and achieve an interference fit. The first positioning seat 313 is mounted on the first transfer mechanism 314, which can move the first positioning seat 313, along with the stator assembly 12 and front end cap 13 located on it, from the pre-assembly station to the first pressing station. The first drive mechanism 311 drives the first pressure head 312 to move downward to fix and press the stator assembly 12 and the front end cover 13. The first transfer mechanism 314 drives the first positioning seat 313 to move the stator assembly 12 and the front end cover 13 to the first pressing station located directly below the first pressure head 312.

[0036] Specifically, the first positioning seat 313 is provided with a positioning structure that matches the shape of the front cover 13 to position the front cover 13. The positioning structure may include a circumferential positioning structure to prevent circumferential displacement of the front cover 13 during the pressing process. The first positioning seat 313 is fixedly mounted on the worktable of the first transfer mechanism 314, and the two are connected by a connecting structure. The connecting structure also allows the first positioning seat 313 to be disassembled relative to the first transfer mechanism 314 for later maintenance or replacement. In this embodiment, the connecting structure is a floating structure 315, which can automatically compensate for alignment errors, protect the stator assembly 12 and the front cover 13, and improve the pressing success rate. It is understood that other pressing devices can also have floating structures between the positioning seat and the transfer mechanism, which will not be described in detail below.

[0037] The first transfer mechanism 314 includes a worktable for placing the first positioning seat 313 and a motor 100 for driving the worktable to move. The first drive mechanism 311 between the motor 100 and the worktable can be a ball screw structure. The ball screw structure drives the worktable to reciprocate, thereby driving the stator assembly 12 and the front end cover 13 to move smoothly between the pre-assembly station and the first pressing station.

[0038] The first drive mechanism 311 can be a servo press, which provides the axial pressure required during the pressing process. The first drive mechanism 311 is connected to the first press head 312 to drive the first press head 312 to move up and down. In this embodiment, a 5T servo press is used to ensure the pressing force. The first drive mechanism 311 also includes a control system, which controls the precise adjustment of the motion parameters of the servo press. The motion parameters may include pressing speed, pressing stroke, and holding time. Through the control system, it is ensured that the connection strength between the stator assembly 12 and the front end cover 13 after pressing meets the design requirements of the motor 100.

[0039] The first pressing head 312 is connected to the output end of the first driving mechanism 311, and is located on the lower side of the first driving mechanism 311, directly facing the first pressing station. The lower side of the first pressing head 312, directly facing the first pressing station, has a pressing structure adapted to the contour of the front end cover 13. When the first pressing head 312 contacts the front end cover 13, the contact area between the pressing structure and the front end cover 13 is maximized, and surface contact is achieved as much as possible to avoid deformation of the front end cover 13.

[0040] The first detection component 32 includes at least a first displacement sensor 321, which enables the first detection component 32 to have at least a displacement detection mode. The first displacement sensor 321 may include a contact displacement sensor, such as a magnetostrictive displacement sensor or a wire encoder, or a non-contact displacement sensor, such as an eddy current displacement sensor, a capacitive displacement sensor, or a laser sensor. The first detection component 32 is used to detect the position of the first pressure head 312 to indirectly reflect the relative displacement of the front end cover 13 relative to the stator assembly 12, thereby reflecting the pressing state of the stator assembly 12 and the front end cover 13.

[0041] In this embodiment, the motor assembly equipment 200 may further include a control device 33 and an indicating device 34. The control device 33 is at least connected to the first detection component 32. Specifically, the control device 33 may be electrically connected or signal-connected to the first detection component 32. The first detection component 32 detects the position of the first pressure head 312 and sends the detected information to the control device 33. The control device 33 includes at least a controller 331 and a memory. The memory stores preset values ​​indicating that the stator assembly 12 and the front end cover 13 have reached a preset pressing state. The preset values ​​may correspond to the position of the first pressure head 312. The first displacement sensor 321 sends the detected information to the controller 331. The controller 331 determines the pressing state of the stator assembly 12 and the front end cover 13 based on the input information from the first sensor. The control device 33 is also connected to the indicating device 34, specifically, it may be electrically connected or signal-connected. The controller 331 receives the position information of the first pressing head 312 and compares it with a preset value. If the position information reaches the preset value, it indicates that the pressing of the stator assembly 12 and the front end cover 13 has reached the preset pressing state, meaning the pressing of the front end cover 13 and the stator assembly 12 is qualified. If the controller 331 finds that the position information of the first pressing head 312 has not reached the preset value, it indicates that the pressing of the front end cover 13 and the stator assembly 12 has not reached the preset pressing state, meaning the pressing of the front end cover 13 and the stator assembly 12 is unqualified. The controller 331 sends the result of whether the pressing is qualified or unqualified to the indicator 34, which then alerts the engineer.

[0042] In this embodiment, the indicating device 34 may include a display screen that can display whether the assembly is qualified or unqualified. The engineer can then take corresponding actions based on the prompts from the indicating device 34. If the display screen indicates that the pressing is unqualified, the engineer will investigate the cause of the problem and take appropriate action based on the investigation results. If the display screen indicates that the pressing is qualified, the assembly of the motor 100 will continue to the next process. In other embodiments, the indicating device 34 may also be other devices that can alert the user, such as an indicator light. A green indicator light indicates qualified pressing, while a red indicator light indicates unqualified pressing. Alternatively, the indicating device 34 may also be a buzzer. The buzzer can emit sound to indicate qualified or unqualified pressing, or it can emit different sounds to help the user distinguish the pressing result. In this way, the assembly process of the motor 100 is automated, reducing manufacturing costs. Furthermore, by using the first detection component 32 to detect the product's qualification status, the yield rate of the product is improved.

[0043] In other embodiments, the first detection component 32 further includes a pressure detection mode, allowing the first detection component 32 to selectively choose between a pressure detection mode and a displacement detection mode. Specifically, the first detection component 32 also includes a first pressure sensor 322, which can detect the output pressure of the first pressure head 312, thereby reflecting the pressing state between the stator assembly 12 and the front end cover 13. The first pressure sensor 322 can be installed close to the first pressure head 312. In this embodiment, the pressure sensor can be a strain gauge pressure sensor, a piezoelectric pressure sensor, or a piezoresistive pressure sensor, etc. Accordingly, the pressure sensor sends the detected output pressure information to the controller 331. The memory contains preset values ​​reflecting that the pressing of the stator assembly 12 and the front end cover 13 has reached a preset pressing state. The controller 331 compares the received input information with the preset values ​​to determine whether the pressing of the stator assembly 12 and the front end cover 13 has reached the preset pressing state, and controls the indicator device 34 to issue a corresponding reminder based on the result. It is understood that engineers can choose between a displacement detection mode and a pressure detection mode according to their work requirements.

[0044] Alternatively, in other embodiments, the first detection component 32 may further include a hybrid detection mode. The controller 331 can receive input information from the first displacement sensor 321 and input information from the pressure sensor, and comprehensively determine the pressing status of the stator assembly 12 and the front end cover 13 based on the information from both. Specifically, the controller can determine the pressing qualification of the stator assembly 12 and the front end cover 13 through the pressure-displacement curve.

[0045] In this way, for motor assembly, engineers can select the detection mode of the first detection component 32 according to the specific incoming materials, the design requirements of the motor, and the composition of the product assembly line, thereby improving the adaptability of the motor assembly equipment 200.

[0046] In this embodiment, the first pressing device 300 further includes a first station detection component 35, which is used to detect whether the stator assembly 12 and the front end cover 13 have been pre-placed on the first positioning seat 313. This first workpiece detection component may include optical sensors, vision sensors, etc. When the first station detection component 35 detects that the stator assembly 12 and the front end cover 13 are not placed on the first positioning seat 313, it prevents the operation of the first pressing device 300. It is understood that workpiece detection components can also be provided at the positioning seats of other pressing devices, which will not be described in detail later.

[0047] like Figure 7 and Figure 8As shown, a first shifting mechanism 91 is also provided between the first pressing device 300 and the second pressing device 400. After the stator assembly 12 and the front end cover 13 are pressed together, the first shifting mechanism 91 transfers the first part group consisting of the stator assembly 12 and the front end cover 13 to the second pressing device 400, and the bearing 14 is pressed into the front end cover 13 by the second pressing device 400. Specifically, the first shifting mechanism 91 is located above the first transfer mechanism 314. The first transfer mechanism 314 is used to move the first positioning seat 313 to the installation position in the left-right direction, while the first shifting mechanism 91 is used to move the first part group from the pre-installation position of the first pressing device 300 to the pre-installation position of the second pressing device 400. The first shifting mechanism 91 includes a first gripping component 911 and a first shifting component 912. The first gripping component 911 can move in the up-down direction. After the first part group is press-fitted, the first gripping assembly 911 moves downward to the vicinity of the first positioning seat 313 and grips the first part group. Then, the first gripping assembly 911 moves upward, and then the first shifting assembly 912 drives the first gripping assembly 911 to move in the front-back direction toward the second pressing device 400. After the first gripping assembly 911 moves onto the second pressing device 400, the first gripping assembly 911 moves downward and places the first part group at the pre-assembly station of the second pressing device 400.

[0048] like Figure 8As shown, the second pressing device 400 includes a bearing discharge assembly 41 for supplying bearings 14 and a bearing pressing assembly 42 for installing bearings 14 into the bearing chamber of the front end cover 13. The bearing pressing assembly 42 includes: a bearing pusher assembly 421, a second drive mechanism 422, a second press head 423, a second positioning seat 424, a bearing lifting and positioning mechanism 425, and a second transfer mechanism 426. The bearing discharge assembly 41 includes a bearing support seat 411 and a bearing loading guide rail 412. The bearing support seat 411 has two positioning points, and the bearing loading guide rail 412 at each of the two positioning points is respectively equipped with a string of bearings 14. The two positioning points are spaced 180 degrees apart. That is, the bearing discharge assembly 41 can load two strings of bearings 14 at a time, and each string of bearings 14 contains multiple bearings. The bearing support seat 411 moves downward along the bearing loading guide rail 412 until it reaches the bearing pusher assembly 421. The bearing pusher assembly 421 includes a bearing pusher guide rail 421a and a bearing pusher plate 421b for pushing the bearing 14 to move in the left-right direction. The bearing pusher plate 421b can move along the bearing pusher guide rail 421a. The bearing pusher plate 421b moves the bearing 14 to the second pressing station, which is located directly above the bearing lifting and positioning mechanism 425. When a string of bearings 14 is used up, the bearing support seat 411 rotates 180 degrees to move another string of bearings 14 to the bearing pusher assembly 421. The bearing lifting and positioning mechanism 425 is provided with a bearing 14 positioning seat, which is connected to the inner ring of the bearing 14 to drive the bearing 14 to move to a preset height. The bearing lifting and positioning mechanism 425 is also configured to hold the bearing 14 at the preset height. The second positioning seat 424 is provided with a first part assembly consisting of the stator assembly 12 and the front end cover 13, which has been moved by the first shifting mechanism 91. The second transfer mechanism 426 drives the second positioning seat 424 to move in the left-right direction to the second pressing station of the second pressing device 400, that is, below the bearing 14 located at the bearing lifting and positioning mechanism 425. The second drive mechanism 422 includes a servo press, which is used to provide the axial pressure required during the pressing process. The servo press in the second pressing device 400 can be a 1T servo press to ensure the pressing force of the bearing 14. The second drive mechanism 422 drives the second pressing head 423 to move downward to press the bearing 14 into the first part group composed of the stator assembly 12 and the front end cover 13. During the downward movement of the second pressing head 423 driven by the second drive mechanism 422, the position of the lifting cylinder in the bearing lifting and positioning mechanism 425 is basically maintained. In this embodiment, the second pressing device 400 is also provided with a second detection component for detecting the pressing state of the bearing 14. The second detection component may include a pressure sensor and / or a displacement sensor. The second detection component can send the detected information to the control device 33 for qualification judgment.

[0049] like Figure 9As shown, a second shifting mechanism 92 is also provided between the second pressing device 400 and the third pressing device 500. After the bearing 14 and the first part group are pressed, the second transfer mechanism 426 resets the second positioning seat 424 to the pre-assembly position, and the second shifting mechanism 92 transfers the bearing 14 and the second part group, which are located on the second positioning seat 424, to the third pressing device 500. The third pressing device 500 then presses the retaining ring 15 into the retaining ring groove in the bearing chamber of the front end cover 13. Specifically, the second shifting mechanism 92 is located on the upper side of the second transfer mechanism 426. The second shifting mechanism 92 includes a second gripping component 921 and a second shifting component 922. The second gripping component 921 can move in the vertical direction. After the second part group is press-fitted, the second gripping assembly 921 moves downward to the vicinity of the second positioning seat 424 and grips the second part group. Then, the second gripping assembly 921 moves upward, and then the second shifting assembly 922 drives the second gripping assembly 921 to move in the front-back direction toward the third pressing device 500. After the second gripping assembly 921 moves onto the third pressing device 500, the second gripping assembly 921 moves downward and places the second part group at the pre-assembly station of the second pressing device 400.

[0050] like Figures 9 to 11 As shown, the third pressing device 500 includes: a retaining ring feeding assembly 51 for providing retaining rings 15 and a retaining ring pressing assembly 52 for installing retaining rings 15 into retaining ring grooves in the bearing housing. The retaining ring feeding assembly 51 is used to realize the vertical series arrangement and continuous conveying of retaining rings 15. The retaining ring feeding assembly 51 includes a retaining ring feeding guide rail 511, and a string of retaining rings 15 is installed on the retaining ring feeding guide rail 511.

[0051] The retaining ring pressing assembly 52 includes: a retaining ring pusher assembly 521, a third positioning seat 522, a third transfer mechanism 523, a retaining ring pressing shrink cone sleeve 524, a retaining ring pressing cylinder 525, a third pressing head 526, and a third drive mechanism 527. The retaining ring pusher assembly 521 moves the retaining ring 15 to the third pressing station; specifically, it pushes the retaining ring 15 to the retaining ring pressing shrink cone sleeve 524 in a left-right direction. The third positioning seat 522 provides a pre-assembly station for placing the second part assembly, including the bearing 14, stator assembly 12, and front end cover 13, delivered by the second gripping mechanism. The third transfer mechanism 523 supports the third positioning seat 522 and moves the second part assembly mounted on the third positioning seat 522 to the third pressing station. The inner side of the retaining ring pressing shrink cone sleeve 524 has a tapered hole, and its outer side is connected to the piston rod of the retaining ring pressing cylinder 525 via a flange. When the piston rod extends, it can drive the retaining ring pressing shrink cone sleeve 524 to move, so that the retaining ring 15 is fitted onto the tapered surface of the retaining ring pressing shrink cone sleeve 524. The third drive mechanism 527 can be a servo press, which is used to provide the axial pressure required during the pressing process. The servo press drives the third press head 526 to move downward. The lower end face of the third press head 526 contacts the top of the front end cover 13 in the second part group and applies pressure, so that the retaining ring 15 slides along the inner wall of the bearing chamber under the cooperative action of the third press head 526 and the retaining ring pressing shrink cone sleeve 524 until the retaining ring 15 enters the retaining ring groove.

[0052] In this embodiment, the third pressing device 500 further includes a third detection component 529, which is used to detect the pressing status of the retaining ring 15 and the second part group. The third detection component 529 can be a displacement sensor, a pressure sensor, or a vision sensor, etc. The third pressing device 500 also includes a storage component 528 and a third shifting mechanism 93 disposed after the third pressing device 500. The third shifting mechanism 93 is disposed above the third transfer mechanism 523. The third shifting mechanism 93 is used to move the stator assembly with the retaining ring 15 and the second part group pressed together to the detection station 528c on the storage component 528. The third detection component 529 is disposed at the detection station 528c and is used to detect the pressing status of the stator assembly located at the detection station 528c, that is, the qualification status of the stator assembly. The storage component 528 also includes a storage track 528a extending in a left-right direction, and a storage drive component 528b that moves the stator assembly at the detection station 528c along the storage track 528a to the storage station, with the detection station 528c located to the right of the storage track 528a. If the stator assembly is in a qualified state, the fourth shifting mechanism 94 moves the qualified stator assembly to the fourth pressing device 600. If the stator assembly is in a defective state, the storage drive component 528b drives the stator assembly located at the detection station 528c to move to the left along the storage track 528a to store the defective part.

[0053] like Figure 12 Figure 14 As shown, the fourth shifting mechanism 94 connects the third pressing device 500 and the fourth pressing device 600 and moves the qualified stator assembly located at the storage station to the fourth pressing device 600. The stator assembly includes a stator component 12, a front end cover 13, a bearing 14, and a retaining ring 15. The fourth shifting mechanism 94 also includes a fourth gripping component 941, which is used to grip the stator assembly.

[0054] The fourth pressing device 600 includes: a fourth positioning seat 61, a vertical moving assembly 62, a rotor pneumatic chuck 63, a fourth drive mechanism 64, and a fourth pressing head 65. The fourth positioning seat 61 serves as a pre-assembly station for the fourth pressing device 600, supporting the stator assembly gripped by the fourth gripping assembly 941. The stator assembly includes at least a stator component 12, a front end cover 13, a bearing 14, and a retaining ring 15. The fourth positioning seat 61 can also be moved to the fourth pressing station for pressing. Figure 12 The bolded portion (reference numeral 61') of the vertical movement assembly 62 provides high-precision, highly repeatable positioning and controllable feed motion in the vertical direction. Its main function is to drive the fourth gripping assembly 941 of the gripper holding the stator assembly to descend precisely during the press-fitting process.

[0055] The rotor pneumatic chuck 63 is used to accurately position and clamp the rotor assembly 11 at the fourth press-fitting station. It includes a chuck body and jaws. The chuck body includes a centering mechanism, the jaw surface shape is adapted to the rotor assembly 11, and the chuck body has a built-in pneumatic circuit and a position sensor. The position sensor is used to detect the opening and closing state of the jaws and whether the rotor assembly 11 is clamped in place.

[0056] The motor assembly equipment 200 in this embodiment also includes a rotor gripping device 95, which includes a robotic arm 951. The rotor gripping device 95 is used to automatically grip the rotor assembly 11 from the rotor feeding line (such as a conveyor belt, hopper, or previous station) and, through its mobility, safely and accurately transport the rotor assembly 11 to the fourth pressing station, and initially place the rotor assembly 11 in the central area of ​​the rotor pneumatic chuck 63 for clamping. After the task is completed, the rotor gripping device 95 moves away to make room for the pressing process.

[0057] When the rotor gripping device 95 transports the rotor to the center position of the chuck body, the chuck body moves, and its jaws automatically center and firmly clamp the rotor shaft 111. Its high-precision centering and clamping function ensures that the center line of the rotor shaft 111 is strictly coaxial with the center line of the main shaft of the fourth drive mechanism 64, providing a crucial reference for the precise press-fitting of the stator.

[0058] The fourth drive mechanism 64 includes a servo press, which provides the axial pressure required during the pressing process. The servo press drives a fourth press head 65 to move downwards, which contacts the stator assembly to press the stator assembly and rotor assembly 11 into a single unit.

[0059] like Figures 12 to 15 As shown, in this embodiment, the motor assembly equipment 200 may further include a rotor trolley 961, a rotor pushing device 962, and a motor unloading device 963. The rotor trolley 961 is equipped with multiple support platforms 961a, each support platform 961a having several press-fitted rotor assemblies 11. The rotor pushing device 962 pushes the rotor assemblies 11 from the support platforms 961a to the rotor gripping device 95, which grips the rotor assemblies 11 and transports them to the rotor pneumatic chuck 63. The motor unloading device 963 is used to remove the press-fitted motor 100 from the fourth press-fitting device 600 to make room for the press-fitting of the next motor 100.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A motor assembly device for assembling a motor, the motor comprising: Stator assembly, rotor assembly, front end cover, bearings, and retaining rings, characterized in that the motor assembly equipment includes: frame; The first pressing device includes an end cover pressing assembly for mounting the stator assembly and the front end cover, and a first detection assembly for detecting the pressing status of the stator assembly and the front end cover. The second pressing device includes a bearing discharge assembly for providing the bearing and a bearing pressing assembly for installing the bearing into the bearing chamber of the front end cover. The third pressing device includes a retaining ring feeding assembly that provides the retaining ring and a retaining ring pressing assembly that installs the retaining ring into the retaining ring groove in the bearing housing; The fourth pressing device is a rotor pressing assembly that presses the assembled stator assembly, which includes at least the stator assembly, front end cover, bearing and retaining ring, onto the rotor assembly. The control device determines the press-fitting status of the stator assembly and the front end cover based on the input information from the first detection component. An indicator device, connected to the control device, to indicate the judgment result of the control device; The first detection component has at least a displacement detection mode, the first detection component includes a first displacement sensor, and the control device is at least connected to the first displacement sensor.

2. The motor assembly equipment for assembling motors according to claim 1, characterized in that, The control device determines the press-fitting status of the stator assembly and the front end cover based on the input information from the first displacement sensor.

3. The motor assembly equipment for assembling motors according to claim 1, characterized in that, The first detection component further includes a pressure detection mode, and the first detection component can optionally determine the pressure detection mode and the displacement detection mode.

4. The motor assembly equipment for assembling motors according to claim 3, characterized in that, The first detection component also includes a pressure sensor, and the control device determines the press-fitting status of the stator assembly and the front end cover based on the input information from the pressure sensor.

5. The motor assembly equipment for assembling motors according to claim 3, characterized in that, The first detection component also includes a pressure sensor, and the control device determines the press-fitting status of the stator assembly and the front end cover based on the input information of the pressure sensor and the input information of the first displacement sensor.

6. The motor assembly equipment for assembling motors according to claim 1, characterized in that, The third pressing device includes a second displacement sensor that detects the position of the retaining ring.

7. The motor assembly equipment for assembling motors according to claim 6, characterized in that, The third pressing device further includes a storage component, comprising a testing station for placing the stator assembly and a storage drive component for driving the stator assembly from the testing station to the storage station. When the stator assembly is in a defective state, the storage drive component drives the stator assembly to move to the storage station.

8. The motor assembly equipment for assembling motors according to claim 7, characterized in that, It also includes a shifting mechanism that moves the qualified stator assembly to the fourth pressing device, the shifting mechanism being disposed between the storage component and the fourth pressing device.

9. The motor assembly equipment for assembling motors according to claim 1, characterized in that, The fourth pressing device includes: a shifting mechanism, a positioning seat, a rotor pneumatic chuck, a driving mechanism, and a pressing head. The shifting mechanism includes a gripping device for gripping the stator assembly from the third pressing device to the positioning seat. The rotor driving chuck includes a chuck body and jaws. The chuck body includes a centering mechanism. The jaw surface shape is adapted to the rotor assembly. The pressing head is connected to the driving mechanism to be driven to move downward.

10. The motor assembly equipment for assembling motors according to claim 9, characterized in that, The rotor trolley includes a support platform for placing the rotor, and the rotor gripping device includes a robotic arm for gripping the rotor assembly to the rotor pneumatic chuck.

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