A device for automatically positioning a motor cover

Abstract

The utility model provides a kind of device that motor upper cover is automatically found position, belong to automobile parts technical field.The utility model is provided with the rotary component with discharging station by being set on rack, simultaneously, material to position detector and angle identification detector are respectively provided with above and lateral of discharging station, and, the side of discharging station is also provided with clamping positioning assembly, so that after the motor upper cover to be adjusted is placed in discharging station, whether it is placed in place is judged by material to position detector, then motor upper cover is rotated to adjust angle position by rotary component, and whether the positioning foot of motor upper cover enters preset range is detected by angle identification detector, finally position adjustment is carried out to motor upper cover by clamping positioning assembly, ensure that the angle position of motor upper cover can be more accurate, to ensure that subsequent riveting can be more accurate, avoid the problem that standard is not unified in artificial operation, processing efficiency and product yield are low.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a device for automatically positioning a motor cover. Background Technology

[0002] With the development of automotive electrical automation, car windows and sunroofs are usually equipped with electric control functions, that is, the drive unit of the windows and sunroof is realized by motors, that is, the motor provides driving force for the movement of the windows and sunroofs.

[0003] Currently, existing automotive motor structures, such as the gear transmission mechanism of an automotive window regulator motor disclosed in patent CN205670732U, include a fixed shaft, an output gear, and a cover plate. One end of the fixed shaft is fixedly connected to a housing assembly. The output gear is positioned above and fixedly connected to the worm gear, and both the output gear and the worm gear are rotatably mounted on the fixed shaft. Furthermore, the cover plate has a through hole in its center, with a diameter larger than the output gear but smaller than the worm gear. The cover plate passes through the output gear and engages with the housing assembly. Additionally, to improve the reliability of the cover plate's installation on the housing assembly, clips for axially fixing the cover plate are typically provided along its edge. During installation, these clips are riveted to a locking block on the housing housing of the worm gear. Therefore, it is necessary to ensure that the clips on the cover plate are aligned with the locking block on the housing housing before riveting to achieve reliable and stable installation of the cover plate on the housing housing. However, the actual assembly process of the existing motor structure relies on manual labor, specifically placing the cover plate onto the housing by hand. While this manual loading method can achieve assembly, it suffers from high defect rates due to the inability to precisely align the clips and latches, resulting in angular positional deviations in the cover plate. Furthermore, the manual loading process relies on manual labor and experience, leading to low efficiency and a lack of standardized procedures, thus impacting product production efficiency and quality. Summary of the Invention

[0004] To address the aforementioned problems in existing technologies, this invention aims to provide an automatic positioning device for a motor cover. This device comprises a rotary table with a feeding station mounted on a frame. Material arrival detectors and angle recognition detectors are respectively installed above and to the side of the rotary table. Additionally, a clamping and positioning component is installed beside the rotary table. After the motor cover to be positioned is placed on the feeding station, the material arrival detector determines whether the motor cover is properly positioned. The rotary table then rotates to change the angle of the motor cover, and the angle recognition detector checks whether the positioning feet of the motor cover are detected, thus determining the approximate position of the motor cover. Finally, the clamping and positioning component acts on the positioning feet of the motor cover to make a final adjustment to the position of the motor cover, ensuring accurate positioning. This prevents high riveting defects caused by feeding angle deviations during the feeding process. Furthermore, positioning is achieved through the equipment, resulting in more consistent standards, higher feeding efficiency, and improved production efficiency and product quality.

[0005] The specific technical solution is as follows: A device for automatically positioning a motor cover, used to adjust the angular position of a motor cover with positioning feet on its side edge, characterized by: frame; The rotating assembly includes a rotation drive assembly and a rotating table. A feeding station is provided on the rotating table. The rotating table is rotatably mounted on the frame. The rotation drive assembly is mounted on the frame and is poweredly connected to the rotating table. The material arrival detector includes a vertical frame and an arrival detection sensor. The vertical frame is arranged vertically on the frame and is located next to the rotary table. The arrival detection sensor is installed on the top of the vertical frame and faces the feeding station. An angle recognition detector is mounted on the frame and located next to the rotary table, with the detection head of the angle recognition detector facing the rotary table. The clamping and positioning assembly includes a stand and grippers. The stand is vertically mounted on the frame and located next to the rotary table. The grippers are mounted on the stand and extend toward the rotary table. The gripper fingers approach and clamp the positioning feet of the motor cover.

[0006] The aforementioned device for automatically positioning a motor cover further includes a lifting assembly, which comprises a lifting base plate, a lifting top plate, a connecting rod, and a lifting driver. The lifting top plate is arranged parallel to and spaced above the lifting base plate. The connecting rod is arranged between the lifting top plate and the lifting base plate, and its two ends are respectively connected to the lifting base plate and the lifting top plate. The lifting driver is mounted on a frame, and the telescopic shaft of the lifting driver is connected to the lifting base plate.

[0007] In the aforementioned device for automatically positioning a motor cover, a central clearance hole is provided in the middle of the frame, and the lifting top plate and lifting bottom plate are located above and below the central clearance hole, respectively, with the middle of the connecting rod passing through the frame.

[0008] In the aforementioned device for automatically positioning a motor cover, a guide sleeve is provided on the outer sliding sleeve of the connecting rod, and the guide sleeve is mounted on the frame.

[0009] The aforementioned device for automatically positioning a motor cover includes a rotary table comprising a rotating shaft, a bearing, and a receiving platform. The rotating shaft is fitted with a bearing, which is mounted on a frame. The receiving platform is mounted on the top of the rotating shaft and arranged coaxially with it. The material feeding station is located on the receiving platform.

[0010] In the aforementioned device for automatically positioning a motor cover, a clearance groove is provided around the outer side wall of the receiving platform, and when the motor cover is placed on the receiving platform, the positioning foot on the side edge of the motor cover extends to the clearance groove.

[0011] In the aforementioned device for automatically positioning a motor cover, a plurality of magnets are provided on the receiving platform, each magnet being embedded within the receiving platform.

[0012] In the aforementioned device for automatically positioning a motor cover, the rotating shaft is a hollow shaft, and a central hole communicating with the hollow rotating shaft is provided at the center of the receiving platform. The central hole is also connected to the feeding station. Furthermore, the inner diameters of both the central hole and the hollow rotating shaft are larger than the diameter of the O-ring on the motor cover to be adjusted.

[0013] In the aforementioned device for automatically positioning a motor cover, a receiving box is provided inside the frame and at the bottom of the rotating shaft, and the top of the receiving box has an opening that is vertically aligned with the hollow part of the rotating shaft.

[0014] In the aforementioned device for automatically positioning a motor cover, the rotary table and the rotation drive assembly are belt driven. A driven wheel is provided on the rotary table, and the rotation drive assembly includes a rotation driver. A driving wheel is mounted on the output shaft of the rotation driver, and a transmission belt is provided between the driving wheel and the driven wheel.

[0015] The positive effects of the above technical solution are: The aforementioned automatic positioning device for the motor cover utilizes a rotary table with a feeding station mounted on a frame. Material arrival detectors and angle recognition detectors are installed above and beside the rotary table, respectively. A clamping and positioning assembly is also located beside the rotary table. The material arrival detector checks whether the motor cover is properly positioned in the feeding station. The rotary table is then activated to rotate the motor cover. The angle recognition detector detects the positioning feet of the motor cover. If the positioning feet are detected, the rotary table stops rotating, ensuring the angle of the motor cover is within a preset range. The clamping and positioning assembly then uses its grippers to clamp the positioning feet of the motor cover, fine-tuning the angle. This results in a more accurate angle for the motor cover, providing the necessary conditions for precise riveting. It eliminates the need for manual operation based on experience, standardizes processes, improves processing efficiency, and ensures product quality. Attached Figure Description

[0016] Figure 1 This is a structural diagram from one perspective of an embodiment of the device for automatically positioning a motor cover according to the present invention. Figure 2 This is a structural diagram from another perspective of an embodiment of the device for automatically positioning a motor cover according to the present invention; Figure 3 This is a structural diagram of the lifting assembly of a motor cover automatic positioning device according to the present invention; Figure 4 This is a structural diagram of the device for automatically positioning the motor cover according to the present invention.

[0017] In the attached diagram: 1. Frame; 11. Center clearance hole; 2. Rotating assembly; 21. Rotation drive assembly; 22. Rotary table; 211. Drive wheel; 221. Shaft; 222. Bearing; 223. Receiving platform; 224. Driven wheel; 2231. Clearance groove; 2232. Magnet; 2233. Center hole; 3. Material arrival detector; 31. Vertical frame; 32. Arrival detection sensor; 4. Angle recognition detector; 5. Clamping and positioning assembly; 51. Stand; 52. Gripper; 6. Motor cover; 61. Positioning foot; 7. Lifting assembly; 71. Lifting base plate; 72. Lifting top plate; 73. Connecting rod; 74. Lifting driver; 75. Guide sleeve; 8. Receiving box. Detailed Implementation

[0018] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following embodiments are provided in conjunction with the appendix. Figure 1 To be continued Figure 4 The technical solution provided by this utility model is described in detail, but the following content is not intended to limit this utility model.

[0019] Figure 1This is a structural diagram from one perspective of an embodiment of the device for automatically positioning a motor cover according to the present invention. Figure 2 This is a structural diagram from another perspective of an embodiment of the device for automatically positioning a motor cover according to this utility model. (See diagram below.) Figure 1 and Figure 2 As shown, the automatic positioning device for the motor cover provided in this embodiment is used to adjust the angular position of the motor cover 6 with positioning feet 61 on the side edge. At this time, the automatic positioning device for the motor cover includes: frame 1, rotating component 2, material arrival detector 3, angle recognition detector 4 and clamping positioning component 5. In addition, a lifting component 7 can be added in a preferred case.

[0020] Specifically, the frame 1 serves as the main support for the entire device, providing a stable and reliable carrier for the subsequent installation of the rotary table 22, material arrival detector 3, angle recognition detector 4, clamping and positioning assembly 5, and lifting assembly 7.

[0021] Specifically, the rotating assembly 2 includes a rotation drive assembly 21 and a rotating table 22. A feeding station is provided on the rotating table 22. The motor cover 6 to be adjusted is placed at the feeding station before angle adjustment, thus providing a platform for the motor cover 6. Furthermore, the rotating table 22 is rotatably mounted on the frame 1, ensuring its own rotation and providing conditions for subsequent angle adjustment of the motor cover 6 placed on it. Additionally, the rotation drive assembly 21 is mounted on the frame 1 and powered by the rotating table 22, enabling the rotation drive assembly 21 to drive the rotating table 22 to rotate, thus providing conditions for subsequent angle adjustment of the motor cover 6. Specifically, the material arrival detector 3 includes a vertical frame 31 and an arrival detection sensor 32. Preferably, the arrival detection sensor 32 is a laser sensor, which can be purchased commercially and installed directly. In this case, the vertical frame 31 is arranged vertically on the frame 1 and set next to the rotary table 22. The arrival detection sensor 32 is installed on the top of the vertical frame 31 and faces the feeding station. This allows the robotic arm or other tools to place the motor cover 6 to be adjusted on the feeding station, and the arrival detection sensor 32 to detect whether the motor cover 6 is in place, providing the conditions for subsequent rotation and adjustment of the angle position of the motor cover 6. Specifically, the angle recognition detector 4 is installed on the frame 1 and located beside the rotary table 22. The angle recognition sensor is also a laser sensor, which is purchased commercially and installed directly. At this time, the detection head of the angle recognition detector 4 is arranged facing the rotary table 22, thereby detecting the position of the positioning foot 61 of the motor cover 6 on the rotary table 22. This provides the condition for the rotary table 22 to stop rotating. That is, when it is necessary to adjust the angle position of the motor cover 6, the rotary table 22 rotates and the angle recognition detector 4 detects whether the positioning foot 61 is detected. If it is detected, it means that the angle position of the motor cover 6 is within the predetermined range. At this time, the rotary table 22 stops rotating, and only minor adjustments to the motor cover 6 are needed afterward. It is worth noting that after the motor cover 6 is placed in the feeding station of the rotary table 22, the positioning foot 61 on the side edge of the motor cover 6 is located on the side of the rotary table 22 and extends downward. This allows the positioning foot 61 to rotate into the detection range of the angle recognition detector 4 when the rotary table 22 rotates, providing a reference condition for the rotary table 22 to stop rotating. Specifically, the clamping and positioning assembly 5 includes a stand 51 and a gripper 52. The stand 51 is vertically mounted on the frame 1 and located beside the rotary table 22. The gripper 52 is mounted on the stand 51 and extends towards the rotary table 22, allowing the motor cover 6, after being adjusted to a predetermined range by the rotary table 22 and the angle recognition detector 4, to be finely adjusted by the gripper 52. At this time, the gripper 52's fingers approach and clamp the positioning feet 61 of the motor cover 6. If there is a slight deviation in the angular position of the motor cover 6, the gripper 52's fingers can push the motor cover 6 to rotate slightly, thus ensuring that the angular position of the motor cover 6 can be precisely adjusted. It is worth noting that after the angular position of the motor cover 6 is adjusted, a robotic arm or other tools transfer the adjusted motor cover 6 to the assembly equipment for assembly. The motor cover 6, after this angular position adjustment, can precisely correspond to the housing, achieving precise riveting, improving processing efficiency, and ensuring product quality.

[0022] Figure 3 This is a structural diagram of the lifting assembly of a device for automatically positioning a motor cover according to this utility model. Figures 1 to 3As shown, with the addition of the lifting assembly 7, the lifting assembly 7 includes a lifting base plate 71, a lifting top plate 72, a connecting rod 73, and a lifting driver 74. The lifting top plate 72 is arranged parallel to and spaced above the lifting base plate 71. The connecting rod 73 is arranged between the lifting top plate 72 and the lifting base plate 71, and its two ends are connected to the lifting base plate 71 and the lifting top plate 72 respectively. The connecting rod 73 forms an integral structure with the lifting top plate 72 and the lifting base plate 71, ensuring that the lifting base plate 71 and the lifting top plate 72 can be lifted and lowered synchronously, which provides the conditions for subsequently driving the rotating assembly 2 to lift and lower synchronously. At this time, the lifting actuator 74 is installed on the frame 1, and the telescopic shaft of the lifting actuator 74 is connected to the lifting base plate 71. This allows the lifting actuator 74 to provide power for the lifting movement of the overall structure consisting of the lifting base plate 71, the lifting top plate 72, and the connecting rod 73 while it is moving itself. This allows the lifting assembly 7 to raise the height of the adjusted motor top cover 6 after the angle position of the motor cover 6 is adjusted, keeping the motor top cover 6 as far away from the frame 1 as possible. This facilitates the gripping of the adjusted motor top cover 6 by the robotic arm or other transfer structures, resulting in a more reasonable structural design. It is worth noting that the rotary table 22 and the rotation drive assembly 21 are both installed on the lifting top plate 72. This ensures that when the lifting assembly 7 moves, all structures of the rotating assembly 2 move synchronously, preventing misalignment that could prevent the rotating assembly 2 from rotating and ensuring the normal operation of the rotating assembly 2.

[0023] More specifically, a central clearance hole 11 is provided in the middle of the frame 1, and the lifting top plate 72 and the lifting bottom plate 71 are respectively set above and below the central clearance hole 11. Furthermore, the middle part of the connecting rod 73 passes through the frame 1, so that the overall structure composed of the lifting top plate 72, the lifting bottom plate 71 and the connecting rod 73 can be raised and lowered on the frame 1. The central clearance hole 11 provides clearance space for the rotating component 2 during the lifting process, preventing lifting collisions. This not only ensures safety but also makes better use of space, resulting in a smaller overall size of the device.

[0024] More specifically, a guide sleeve 75 is slidably sleeved on the outside of the connecting rod 73, and the guide sleeve 75 is installed on the frame 1, so that when the lifting assembly 7 is in the lifting motion, the connecting rod 73 can move in the corresponding guide sleeve 75. That is, the connecting rod 73 can not only serve as a connecting structure connecting the lifting base plate 71 and the lifting top plate 72, but also as a guide rod in the lifting motion process, ensuring the smooth operation of the lifting assembly 7.

[0025] More specifically, the rotary table 22 of the rotating assembly 2 includes a rotating shaft 221, a bearing 222, and a receiving platform 223. The rotating shaft 221 is fitted with a bearing 222, which is mounted on the frame 1, allowing the rotating shaft 221 to rotate on the frame 1 via the bearing 222. Simultaneously, the receiving platform 223 is mounted on top of the rotating shaft 221 and is coaxially arranged with the rotating shaft 221, allowing the receiving platform 223 to rotate with the rotating shaft 221 and ensuring that their axes are aligned during rotation, thus guaranteeing the smooth rotation of the receiving platform 223. At this time, the feeding station is set on the receiving platform 223, that is, the motor cover 6 to be adjusted is placed on the receiving platform 223. The receiving platform 223 supports the motor cover 6 to be adjusted, so that when the receiving platform 223 rotates, the angle position of the motor cover 6 can be adjusted, so that the angle position of the motor cover 6 can accurately fit the receiving cavity of the motor structure, ensuring that the two are more accurate after riveting, reducing the defect rate, unifying the standard, and ensuring product quality.

[0026] Figure 4 This is a structural diagram of a device for automatically positioning a motor cover according to the present invention. Figures 1 to 4 As shown, a clearance groove 2231 is formed around the outer side wall of the receiving platform 223. When the motor cover 6 is placed on the receiving platform 223, the positioning foot 61 on the side edge of the motor cover 6 extends to the clearance groove 2231. This allows the finger tip of the clamping and positioning component 5 to reach into the clearance groove 2231 when the clamping and positioning component 5 clamps the positioning foot 61. This ensures that the clamping and positioning component 5 can fully and directly contact the positioning foot 61 and ensure that the clamping and positioning component 5 can be used normally.

[0027] More specifically, the receiving platform 223 is equipped with several magnets 2232, making the feeding station on the receiving platform 223 magnetic. This allows the iron motor cover 6, when placed in the feeding station, to be magnetically attracted to the receiving platform 223, ensuring the stability of the motor cover 6 after feeding and its ability to rotate synchronously with the rotary table 22, thus guaranteeing accurate subsequent angle adjustments. Preferably, each magnet 2232 is embedded within the receiving platform 223, ensuring the flatness of the surface of the receiving platform 223, thereby allowing the motor cover 6 placed in the feeding station of the receiving platform 223 to be placed stably.

[0028] More specifically, the rotating shaft 221 of the rotary table 22 is a hollow shaft. At the same time, a central hole 2233 is opened at the center of the receiving table 223, which communicates with the hollow shaft 221. The central hole 2233 is connected to the unloading station. Furthermore, the inner diameter of both the central hole 2233 and the hollow shaft 221 is larger than the diameter of the O-ring on the motor cover 6 to be adjusted. This ensures that even if the O-ring on the motor cover 6 accidentally falls off after the motor cover 6 is placed on the unloading station, the fallen O-ring will fall out from the central hole 2233 and the hollow shaft 221 and will not remain in the unloading station. This ensures that the motor cover 6 to be adjusted can be placed smoothly on the unloading station, making the structural design more reasonable.

[0029] More specifically, a receiving box 8 is also provided inside the frame 1 and at the bottom of the rotating shaft 221. The receiving box 8 is removable and installed on the frame 1 for easy removal. At this time, the receiving box 8 is positioned on the lifting base plate 71 of the lifting assembly 7, ensuring that the receiving box 8 remains relatively constant relative to the rotating shaft 221 when the rotary table 22 subsequently moves up and down with the lifting assembly 7. Furthermore, the top of the receiving box 8 has an opening, vertically aligned with the hollow of the rotating shaft 221, allowing O-rings accidentally dropped from the motor cover 6 to be adjusted to be collected by the receiving box 8, providing conditions for subsequent reuse of the O-rings.

[0030] More specifically, the rotary table 22 and the rotation drive assembly 21 are connected by a belt drive. A driven wheel 224 is mounted on the bottom end of the rotating shaft 221 of the rotary table 22, allowing the driven wheel 224 to drive the rotating shaft 221 of the rotary table 22 to rotate. The rotation drive assembly 21 includes a rotary driver, and a driving wheel 211 is mounted on the output shaft of the rotary driver, allowing the rotary driver to drive the driving wheel 211 to rotate when it operates. Furthermore, a transmission belt is provided between the driving wheel 211 and the driven wheel 224, thus connecting the driving wheel 211 and the driven wheel 224 and ensuring power transmission between them. Preferably, both the driving wheel 211 and the driven wheel 224 are gears, and the transmission belt is a toothed belt. This satisfies the transmission requirements while preventing slippage, resulting in more timely power output and interruption, ensuring more accurate angle control during the rotation of the rotary table 22, and a more rational structural design.

[0031] The automatic positioning device for the motor cover provided in this embodiment includes a frame 1, a rotating assembly 2, a material arrival detector 3, an angle recognition detector 4, and a clamping and positioning assembly 5. By setting the rotating assembly 2 with a feeding station on the frame 1, and simultaneously setting the material arrival detector 3 and the angle recognition detector 4 above and beside the feeding station respectively, and also setting the clamping and positioning assembly 5 on one side of the feeding station, after the motor cover 6 to be adjusted is placed in the feeding station, the material arrival detector 3 determines whether it is in place, then the rotating assembly 2 rotates the motor cover 6 to adjust its angle position, and the angle recognition detector 4 detects whether the positioning foot 61 of the motor cover 6 has entered a preset range. Finally, the clamping and positioning assembly 5 adjusts the position of the motor cover 6, ensuring a more accurate angle position, thereby ensuring more precise subsequent riveting and avoiding the problems of inconsistent standards, low processing efficiency, and low product yield associated with manual operation.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for automatically positioning a motor cover, used to adjust the angular position of a motor cover with positioning feet on its side edge, characterized in that, include: frame; A rotating assembly, comprising a rotation drive assembly and a rotating table, wherein a feeding station is provided on the rotating table, the rotating table is rotatably mounted on the frame, and the rotation drive assembly is mounted on the frame and poweredly connected to the rotating table; The material arrival detector includes a vertical frame and an arrival detection sensor. The vertical frame is arranged vertically on the frame and is located beside the rotary table. The arrival detection sensor is installed on the top of the vertical frame and faces the feeding station. An angle recognition detector is mounted on the frame and located beside the rotary table, with the detection head of the angle recognition detector facing the rotary table. A clamping and positioning assembly includes a stand and a gripper. The stand is vertically mounted on the frame and located beside the rotary table. The gripper is mounted on the stand and extends toward the rotary table. The fingers of the gripper approach the positioning foot of the motor cover and clamp the positioning foot of the motor cover.

2. The device for automatically positioning the motor cover according to claim 1, characterized in that, It also includes a lifting assembly, which includes a lifting base plate, a lifting top plate, a connecting rod, and a lifting driver. The lifting top plate is arranged parallel to and spaced above the lifting base plate. The connecting rod is arranged between the lifting top plate and the lifting base plate, and its two ends are respectively connected to the lifting base plate and the lifting top plate. The lifting driver is mounted on the frame, and the telescopic shaft of the lifting driver is connected to the lifting base plate.

3. The device for automatically positioning the motor cover according to claim 2, characterized in that, A central clearance hole is provided in the middle of the frame, the lifting top plate and the lifting bottom plate are located above and below the central clearance hole respectively, and the middle part of the connecting rod passes through the frame.

4. The device for automatically positioning the motor cover according to claim 3, characterized in that, The connecting rod is slidably fitted with a guide sleeve, which is mounted on the frame.

5. The device for automatically positioning the motor cover according to claim 1, characterized in that, The rotary table includes a rotating shaft, a bearing, and a receiving platform. The rotating shaft is fitted with the bearing, which is mounted on the frame. The receiving platform is mounted on the top of the rotating shaft and is arranged coaxially with the rotating shaft. The material feeding station is located on the receiving platform.

6. The device for automatically positioning the motor cover according to claim 5, characterized in that, A clearance groove is formed around the outer side wall of the receiving platform, and when the motor cover is placed on the receiving platform, the positioning foot on the side edge of the motor cover extends to the clearance groove.

7. The device for automatically positioning the motor cover according to claim 5, characterized in that, The receiving platform is provided with a number of magnets, and each magnet is embedded in the receiving platform.

8. The device for automatically positioning the motor cover according to claim 5, characterized in that, The rotating shaft is a hollow shaft. At the same time, the center of the receiving platform has a central hole that communicates with the hollow rotating shaft. The central hole is also connected to the feeding station. Furthermore, the inner diameter of both the central hole and the hollow rotating shaft is larger than the diameter of the O-ring on the motor cover to be adjusted.

9. The device for automatically positioning the motor cover according to claim 8, characterized in that, A receiving box is provided inside the frame and at the bottom of the rotating shaft, and the top of the receiving box has an opening that is vertically aligned with the hollow part of the rotating shaft.

10. The device for automatically positioning the motor cover according to claim 1, characterized in that, The rotary table and the rotation drive assembly are belt driven. A driven wheel is provided on the rotary table. The rotation drive assembly includes a rotation driver, and a driving wheel is mounted on the output shaft of the rotation driver. A transmission belt is provided between the driving wheel and the driven wheel.

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