Stator assembling device

Abstract

The utility model provides a stator assembling device, which comprises a workbench, an armature sliding table assembly, a casing sliding table assembly, a heating device, a transfer manipulator, a casing marking assembly and a stator shrinkage fit assembly, and positioning tools are arranged on the armature sliding table assembly and the casing sliding table assembly. According to the stator assembling device, the casing sliding table assembly moves the casing to the heating position, and the heating device is automatically started and completes casing heating; a stator is manually hoisted to the stator hot jacket assembly from an off-line tray, then the stator hot jacket assembly automatically moves the stator to a combined assembly station, combined assembly of the stator and a machine shell is automatically completed, after combined assembly is completed, the machine shell sliding table assembly moves a product to an off-line position, and the transferring mechanical arm takes down the product from the off-line position and transfers the product to a feeding tray of a cooling bin. And after cooling is completed, the transferring mechanical arm moves the products from the cooling tray to the shell marking assembly, the products are moved to the marking position through the shell marking assembly, and marking is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a stator assembling device. Background Art

[0002] During the motor assembly process, the assembly of the stator core and the housing is one of the key steps. The traditional method usually uses the cold pressing method, that is, using a press or hydraulic equipment to press the stator core into the housing. This process has been widely used in actual assembly:

[0003] 1) Lift the shell and place it on the rotating fixture in the press-fitting area;

[0004] 2) Lift the stator, place it on the upper side of the housing, and check whether the relative positions of the three wires are correct;

[0005] 3) Start the press to press the stator into the housing

[0006] 4) Use the lifting device to lift the base stator to the main line lifting platform

[0007] Although the cold pressing method has the advantage of being easy to operate, its limitations are also very obvious:

[0008] 1) Limited assembly accuracy:

[0009] During the press-fitting process, uneven assembly force, inaccurate positioning, and improper control of the pressing angle and direction by the operator can easily lead to deviations in the concentricity or verticality of the core and the casing, thereby affecting the motor's operating performance and service life.

[0010] 2) The workpiece is fragile:

[0011] Improper operation can easily cause damage or scratches to the workpiece surface. Excessive mechanical pressure on the contact surface between the stator core and the housing can easily lead to stress concentration, causing material fatigue, cracks, and even damage. These deformations and damages can seriously affect assembly quality and the overall performance of the motor.

[0012] 3) Low assembly efficiency

[0013] Frequent manual lifting and transportation of workpieces such as motor housings and stator cores not only reduces production efficiency but also increases the risk of workpiece damage. Utility Model Content

[0014] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a stator assembly device.

[0015] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve its technical problems is: a stator assembly device, including a workbench, an armature slide assembly arranged on one side of the workbench, a casing slide assembly arranged on one side of the armature slide assembly, a heating device arranged on the upper side of the casing slide assembly, a transfer robot arranged in the middle of the workbench, a shell marking assembly arranged on one side of the transfer robot, and a stator shrink fit assembly arranged on the upper side of the armature slide assembly, and positioning tooling is provided on both the armature slide assembly and the casing slide assembly.

[0016] In the above-mentioned stator assembly device, the casing is manually lifted from the off-line pallet to the positioning tool of the casing slide assembly, and the start button is pressed. The casing slide assembly moves the casing to the heating position, and the heating device automatically starts and completes the heating of the casing; the stator is manually lifted from the off-line pallet to the stator shrink-fit assembly, and then the stator shrink-fit assembly automatically moves the stator to the assembly position, automatically completing the assembly of the stator and the casing. After the assembly is completed, the casing slide assembly moves the product to the offline position, and the transfer robot takes the product from the offline position and transfers it to the loading tray of the cooling bin. After the cooling is completed, the transfer robot moves the product from the cooling tray to the casing marking assembly, and moves the product to the marking position through the casing marking assembly. After the marking is completed, it is moved to the loading position, and the casing is inspected for qualification by the visual recognition system; for qualified parts, the transfer robot transfers them to the online position of the conveyor line; for unqualified parts, the transfer robot transfers them to the rework channel, waiting for manual processing and offline.

[0017] Furthermore, it also includes a rework transmission module arranged on one side of the workbench.

[0018] Furthermore, the casing slide assembly includes a slide frame, a driving mechanism arranged at the upper end of the slide frame, and a plurality of sensing mechanisms arranged on both sides of the driving mechanism. The driving mechanism includes a driving cylinder, a slider connected to the driving cylinder, and a guide rail connected to the slider. The guide rail is fixed to the upper end of the slide frame.

[0019] Furthermore, the sensing mechanism includes a first mounting bracket and a sensor provided on the upper end of the first mounting bracket, and the sensor includes a diffuse reflection photoelectric switch, a through-beam photoelectric switch and a proximity switch.

[0020] Furthermore, the heating device includes a heating head, a sensing mechanism and a moving mechanism, the sensing mechanism includes a second mounting bracket and a sensor arranged at the upper end of the second mounting bracket, the sensor includes a temperature sensor and a proximity sensor, and the moving mechanism includes a cylinder and a drag chain connected to the cylinder.

[0021] Furthermore, the armature slide assembly includes a power mechanism, a detection mechanism and an armature stand, and the power mechanism includes a power cylinder, an armature slider and an armature guide rail.

[0022] Furthermore, the stator shrink fit assembly includes a gripping mechanism, a longitudinal movement mechanism, a transverse movement mechanism and a stand mechanism.

[0023] Furthermore, the gripping mechanism includes a clamping jaw and a three-jaw chuck for stabilizing and gripping the stator.

[0024] Furthermore, the longitudinal movement mechanism is an electric cylinder.

[0025] Furthermore, the lateral movement mechanism is a servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic top view of the structure of the stator assembly device provided by an embodiment of the utility model.

[0028] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the heating device in the middle stator assembly device.

[0029] Figure 3 yes Figure 1 Schematic diagram of the three-dimensional structure of the casing slide assembly in the stator assembly device.

[0030] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the armature slide assembly in the stator assembly device.

[0031] Figure 5 yes Figure 1 Schematic diagram of the three-dimensional structure of the stator shrink fit assembly in the stator assembly device.

[0032] Figure 6 yes Figure 1 Schematic diagram of the three-dimensional structure of the shell marking component in the stator assembly device.

[0033] Figure 7 yes Figure 1 Schematic diagram of the three-dimensional structure of the transfer robot in the stator assembly device.

[0034] The numbers and letters in the figure represent the names of the corresponding parts:

[0035] 10-Workbench; 20-Armature slide assembly; 21-Power mechanism; 211-Power cylinder; 212-Armature slider; 213-Armature guide rail; 22-Detection mechanism; 23-Armature stand; 30-Casing slide assembly; 31-Slide stand; 32-Drive mechanism; 321-Drive cylinder; 322-Slide block; 323-Guide rail; 33-Sensing mechanism; 331-First mounting bracket; 332-Sensor; 40-Heating Device; 41-heating head; 42-sensing mechanism; 421-first mounting bracket; 422-sensor; 43-moving mechanism; 431-cylinder; 432-drag chain; 50-transfer robot; 60-shell marking assembly; 70-stator shrink fit assembly; 71-grasping mechanism; 711-gripping jaw; 712-three-jaw chuck; 72-longitudinal moving mechanism; 73-lateral moving mechanism; 74-gantry mechanism; 80-rework transfer module. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figures 1 to 7 A stator assembly device provided by an embodiment of the present invention includes a workbench 10, an armature slide assembly 20 arranged on one side of the workbench 10, a casing slide assembly 30 arranged on one side of the armature slide assembly 20, a heating device 40 arranged on the upper side of the casing slide assembly 30, a transfer robot 50 arranged in the middle of the workbench 10, a shell marking assembly 60 arranged on one side of the transfer robot 50, and a stator shrink fit assembly 70 arranged on the upper side of the armature slide assembly 20. Positioning tooling is provided on both the armature slide assembly 20 and the casing slide assembly 30.

[0038] In the above-mentioned stator assembly device, the casing is manually hoisted from the off-line pallet to the positioning tool of the casing slide assembly 30, and the start button is pressed. The casing slide assembly 30 moves the casing to the heating position, and the heating device 40 automatically starts and completes the casing heating; the stator is manually hoisted from the off-line pallet to the stator shrink-fit assembly 70, and then the stator shrink-fit assembly 70 automatically moves the stator to the assembly position, automatically completing the assembly of the stator and the casing. After the assembly is completed, the casing slide assembly 30 moves the product to the offline position, and the transfer robot 5 0 removes the product from the offline position and transfers it to the loading tray of the cooling bin. After cooling is completed, the transfer robot 50 moves the product from the cooling tray to the shell marking component 60, and the shell marking component 60 moves the product to the marking position. After marking is completed, it is moved to the loading position and the visual recognition system is used to check whether the casing is qualified; for qualified parts, the transfer robot 50 transfers them to the online position of the conveyor line; for unqualified parts, the transfer robot 50 transfers them to the rework channel to wait for manual processing and offline.

[0039] One embodiment of the present invention further includes a rework conveyor module 80 located on one side of the workbench 10. Specifically, the rework conveyor module 80 can be a conveyor line for transferring defective products to a rework station. It provides a convenient conveyor channel for components that require rework during the assembly process, facilitating their rapid transfer to the appropriate rework area for processing, effectively improving the fault tolerance and efficiency of the entire production process.

[0040] In one embodiment of the present invention, the armature slide assembly 20 includes a power mechanism 21, a detection mechanism 22 and an armature stand 23, and the power mechanism 21 includes a power cylinder 211, an armature slider 212 and an armature guide rail 213. Specifically, the detection mechanism 22 is composed of various sensors and their corresponding brackets, wherein the diffuse reflection photoelectric switch and the reflected photoelectric switch are used to detect whether there is an armature on the tooling plate. After the armature is manually put on the line, the diffuse reflection photoelectric switch detects the presence of the armature, and the tooling plate starts to move and accurately stops at the assembly station according to the signal of the proximity switch. When the armature is removed, the reflected photoelectric switch cannot detect its presence, and the tooling plate will automatically return to the loading starting point.

[0041] In one embodiment of the present invention, the housing slide assembly 30 includes a slide frame 31, a drive mechanism 32 located at the top of the slide frame 31, and multiple sensing mechanisms 33 located on either side of the drive mechanism 32. The drive mechanism 32 includes a drive cylinder 321, a slider 322 connected to the drive cylinder 321, and a guide rail 323 connected to the slider 322. The guide rail 323 is fixed to the top of the slide frame 31. The sensing mechanism 33 includes a first mounting bracket 331 and a sensor 332 located at the top of the first mounting bracket 331. The sensor 332 includes a diffuse reflection photoelectric switch, a through-beam photoelectric switch, and a proximity switch. The diffuse reflection photoelectric switch and the through-beam photoelectric switch are used to detect the presence of a housing on a tooling board. The tooling board automatically moves when the housing is brought online, and automatically retracts to the loading position after the housing is unloaded. The proximity switch is used to locate the tooling board, ensuring that it accurately stays at the heating, assembly, and unloading stations. Specifically, the driving cylinder 321 serves as a power source to push the slider 322 to move linearly along the guide rail 323, thereby driving the housing placed on the slider 322 to move to a corresponding position, thereby achieving the positioning and transportation requirements of the housing during the assembly process.

[0042] It should be noted that, in the embodiment of the present invention, the housing slide assembly 30 is designed as a double-station structure to balance the production line, eliminate production bottlenecks, and thus maximize the overall efficiency of the production line.

[0043] In one embodiment of the present invention, the heating device 40 includes a heating head 41, a sensing mechanism 42 and a moving mechanism 43. The sensing mechanism 42 includes a second mounting bracket 421 and a sensor 422 provided at the upper end of the second mounting bracket 421. The sensor 422 includes a temperature sensor and a proximity sensor. The moving mechanism 43 includes a cylinder 431 and a drag chain 432 connected to the cylinder 431. Specifically, the heating head 41 generates eddy currents inside the workpiece through a medium-frequency induced current, causing the workpiece to heat up by itself and achieve a heating effect. The detection mechanism 42 is composed of various sensors and their corresponding brackets, wherein the elastic pin-type temperature sensor probe is used to detect the heating temperature and determine the heating time. The proximity sensor is used to determine the position of the heating head. The moving mechanism 43 receives the signal of the proximity sensor and drives the heating head 41 to move up and down to the appropriate position to complete the precise heating of the casing.

[0044] In one embodiment of the present invention, the stator shrink fit assembly 70 includes a gripping mechanism 71, a longitudinal moving mechanism 72, a transverse moving mechanism 73 and a stand mechanism 74. The gripping mechanism 71 includes a clamping jaw 711 and a three-jaw chuck 712, which are used to stabilize and grip the stator. The longitudinal moving mechanism 72 is an electric cylinder (i.e., an electric cylinder) responsible for the longitudinal movement of the stator, and the transverse moving mechanism 73 is a servo motor responsible for the transverse movement of the stator. When the casing is heated, the stator shrink fit assembly 70 receives a signal, and the clamping jaw 711 supports the iron core inside and moves the stator to the assembly station for assembly with the casing.

[0045] In one embodiment of the present invention, the shell marking assembly is mainly composed of the following key parts:

[0046] Marking machine body:

[0047] This is the core component that enables marking. Its operating principle is typically based on technologies such as laser engraving, pneumatic impact, or inkjet to leave marking information on the shell surface. For example, if a laser marking machine is used, it is equipped with components such as a laser generator, an optical transmission system, and a focusing lens. The laser generator produces a high-energy-density laser beam, which is transmitted through the optical transmission system and focused by the focusing lens to a precise location on the shell surface. The high heat of the laser causes the surface of the shell material to instantly vaporize or undergo a chemical change, thus forming a clear and lasting marking pattern or text. In the case of a pneumatic impact marking machine, a pneumatic device drives the punch needle to impact the shell surface at high frequency, creating a mark with a certain depth and shape. In contrast, an inkjet marking machine relies on a nozzle to spray special ink onto the shell according to a preset pattern or text style. The corresponding mark is formed after the ink dries.

[0048] Marking head adjustment mechanism:

[0049] In order to ensure the accuracy of the marking position and to adapt to the marking needs of shells of different sizes and shapes, the marking assembly is equipped with a marking head adjustment mechanism. This mechanism generally includes a multi-degree-of-freedom adjustment bracket and a corresponding locking device. The adjustment bracket can realize the translation adjustment of the marking head in the directions of the three coordinate axes of X, Y, and Z. For example, through the combination of screw drive and guide rail sliders, the operator can turn the screw handle to accurately control the position movement of the marking head in each direction to align with the specific position on the shell that needs to be marked. At the same time, after adjusting to the appropriate position, the marking head is fixed with a locking device (such as a fastening bolt, etc.) to prevent position deviation during the marking process. In addition, some adjustment mechanisms also have an angle adjustment function, which allows the marking head to rotate around a certain axis to meet the requirements of tilted marking on special parts such as the curved surface of the shell.

[0050] Positioning and clamping device:

[0051] When marking a housing, it's important to ensure it's in a stable and accurate position, so a positioning and clamping device is used. This device consists of a positioning block and a clamping cylinder (or clamping fixture, etc.). The shape and position of the positioning block are designed based on the housing's contours and are typically located around key areas. When the housing is placed on the marking table, it aligns with the positioning block, achieving initial positioning. The clamping cylinder then operates, extending its piston rod to push the clamping fixture (such as a jaw) toward the housing and apply a certain clamping force, securing it firmly to the table and preventing poor marking results due to vibration or displacement during the marking process.

[0052] Control system:

[0053] The control system is the "brain" of the entire shell marking assembly, responsible for coordinating the work of various components and controlling the marking content and parameters. This system typically consists of a controller (such as a programmable logic controller (PLC) or industrial control computer), an operating interface (such as a touch screen or a control panel with operation buttons), and corresponding sensors. The operator uses the interface to enter marking content, such as text information such as product model, batch number, and production date, or imports preset graphic patterns. Upon receiving these instructions, the controller drives the marking machine according to the set parameters, such as the marking mode (continuous marking, single marking), marking speed, and marking power (for laser marking). Simultaneously, sensors (such as position sensors) monitor the shell's position and the position of the marking head in real time, providing feedback to the control system so that the system can make timely adjustments to ensure accurate marking.

[0054] Marking workbench:

[0055] The marking table is a platform that supports the shell. Its surface is typically smooth and wear-resistant to ensure stable placement without scratching or other damage. The size of the workbench is designed based on the maximum size range of the shells being processed. It is often equipped with mounting holes and positioning slots that match the positioning and clamping devices. This facilitates the installation and layout of components such as positioning blocks and clamping cylinders, allowing the entire marking operation to be carried out on a stable and orderly platform.

[0056] Through the coordinated cooperation of the above-mentioned parts, the housing marking component can efficiently and accurately mark the housing after the stator is assembled, providing clear and reliable identification information for the subsequent identification, management and quality traceability of the motor products.

[0057] In one embodiment of the present invention, the transfer robot is mainly composed of the following important parts, which cooperate with each other to achieve the accurate and stable transfer function of components between different workstations.

[0058] Main structure of the robotic arm:

[0059] Base: As the supporting foundation of the entire transfer robot, the base is usually fixed to the corresponding position of the workbench. It must have sufficient strength and stability to bear the weight of the entire robot arm and its grasping parts, and ensure that it does not shake during the transfer process. It is generally made of heavy metal materials (such as cast iron, steel, etc.), and its bottom is fastened to the workbench with bolts and other connectors. At the same time, the base may also have a shock-absorbing device inside to absorb the slight vibration generated during the movement of the robot arm, further improving stability.

[0060] Joints and Connecting Rods: A robotic arm consists of multiple joints and connecting rods, with common structures including three, four, or six joints. Each joint rotates via a drive device such as a motor and a reducer, while connecting rods connect adjacent joints, transmitting motion and force. For example, high-precision servo motors are used as power sources at the joints, paired with planetary reducers to increase torque and reduce speed, thereby achieving precise angular control. Connecting rods are often made of lightweight, high-strength materials such as high-strength aluminum alloy or carbon fiber, ensuring the overall rigidity of the robotic arm while reducing its own weight, allowing for faster and more flexible movement.

[0061] The end effector connection flange, located at the very end of the robotic arm, serves as the interface for connecting gripping components (such as the gripper). It features standardized mounting holes and connection dimensions, making it easy to replace the appropriate end effector for different gripping requirements. It also ensures a secure connection between the end effector and the main body of the robotic arm, ensuring stable and reliable force transmission during gripping and transfer operations.

[0062] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable ordinary technicians in this field to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A stator assembly device, characterized in that: It includes a workbench, an armature slide assembly arranged on one side of the workbench, a casing slide assembly arranged on one side of the armature slide assembly, a heating device arranged on the upper side of the casing slide assembly, a transfer robot arranged in the middle of the workbench, a shell marking assembly arranged on one side of the transfer robot, and a stator shrink fit assembly arranged on the upper side of the armature slide assembly. Both the armature slide assembly and the casing slide assembly are provided with positioning tooling.

2. The stator assembly device according to claim 1, characterized in that: It also includes a rework transmission module arranged on one side of the workbench.

3. The stator assembly device according to claim 1, characterized in that: The casing slide assembly includes a slide frame, a driving mechanism arranged at the upper end of the slide frame, and multiple sensing mechanisms arranged on both sides of the driving mechanism. The driving mechanism includes a driving cylinder, a slider connected to the driving cylinder, and a guide rail connected to the slider. The guide rail is fixed to the upper end of the slide frame.

4. The stator assembly device according to claim 3, characterized in that: The sensing mechanism includes a first mounting bracket and a sensor arranged on the upper end of the first mounting bracket. The sensor includes a diffuse reflection photoelectric switch, a through-beam photoelectric switch and a proximity switch.

5. The stator assembly device according to claim 1, characterized in that: The heating device includes a heating head, a sensing mechanism and a moving mechanism. The sensing mechanism includes a second mounting bracket and a sensor arranged at the upper end of the second mounting bracket. The sensor includes a temperature sensor and a proximity sensor. The moving mechanism includes a cylinder and a drag chain connected to the cylinder.

6. The stator assembly device according to claim 1, characterized in that: The armature slide assembly includes a power mechanism, a detection mechanism and an armature stand. The power mechanism includes a power cylinder, an armature slider and an armature guide rail.

7. The stator assembly device according to claim 1, characterized in that: The stator shrink fit assembly comprises a grasping mechanism, a longitudinal moving mechanism, a transverse moving mechanism and a stand mechanism.

8. The stator assembly device according to claim 7, characterized in that: The gripping mechanism includes a clamping jaw and a three-jaw chuck for securing and gripping the stator.

9. The stator assembly device according to claim 7, characterized in that: The longitudinal movement mechanism is an electric cylinder.

10. The stator assembly device according to claim 7, characterized in that: The lateral movement mechanism is a servo motor.

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