A motor appearance inspection production line

Abstract

This invention discloses a motor appearance inspection production line, including a frame, a conveying device, a top surface inspection device, a five-sided inspection device, and an endoscopic inspection device. The endoscopic inspection device is positioned between the top surface inspection device and the five-sided inspection device along the conveying direction. In the appearance inspection process, the endoscopic inspection device first inspects the internal condition of the motor. Before the five-sided inspection, motors that fail the endoscopic inspection are graded and removed to the first or second NG line, avoiding the waste of five-sided inspection resources by defective motors. Endoscopic and appearance inspections are integrated in one step. The five-sided inspection device uses a transparent motor placement platform combined with a surrounding reflector group and a bottom single-camera architecture. Transmission imaging of the motor's bottom surface and reflection imaging of the four sides are acquired simultaneously in a single exposure, without the need for flipping. This invention eliminates the constraint of the flipping process on production cycle time, achieving highly efficient and automated integrated inspection of motor appearance and endoscopy.

Description

Technical Field

[0001] This invention relates to the field of motor appearance inspection technology, and in particular to a motor appearance inspection production line. Background Technology

[0002] As the core component for power output, the appearance quality of the motor directly affects the assembly accuracy, sealing performance, and service life of the entire machine. Before leaving the factory, the six outer surfaces of the motor (i.e., the top surface, bottom surface, and four peripheral surfaces) and the internal cavities (such as the stator-rotor gap and weld points) usually need to undergo strict appearance defect inspection. The inspection items include, but are not limited to, scratches, dirt, dents, missing characters, and internal foreign objects.

[0003] Currently, the industry primarily relies on manual visual inspection or semi-automated single-machine equipment for multi-faceted appearance inspection of motors. For the six outer surfaces of a motor, existing automated inspection solutions typically employ a "step-by-step flipping method": first, a set of cameras inspects the top surface and some sides of the motor; then, a robotic arm or flipping device rotates the motor 180 degrees, and a second image is taken of the bottom surface and the remaining sides. Some production lines, limited by fixture obstructions or camera field of view, even require moving or repositioning the motor between different workstations to complete image acquisition of all surfaces.

[0004] In existing technologies, each flipping or transfer action means an extension of the production cycle time. Mechanical flipping devices require time for clamping, rotating, and releasing, and the speed must be reduced during the flipping process to avoid secondary damage to the motor. This makes it difficult to break through the cycle time of the entire production line, becoming a major obstacle to increasing production capacity. In existing technologies, there is a lack of corresponding solutions that can complete visual inspection and endoscopic inspection in one stop. Summary of the Invention

[0005] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a motor appearance inspection production line that can reject defective products detected by endoscopic inspection before side and bottom surface inspection, improving efficiency while simultaneously classifying defective products from endoscopic inspection and reducing production costs.

[0006] According to an embodiment of the present invention, a motor appearance inspection production line includes: a frame; a conveying device, the conveying device being disposed on the frame and configured to convey a material tray containing a plurality of motors; a top surface inspection device and a five-sided inspection device being sequentially arranged along the conveying direction of the conveying device; the top surface inspection device includes a first support and a top surface inspection module, the first support being disposed on the frame and located above the conveying device, the top surface inspection module being movably connected to the first support and configured to move directly above the motor to obtain an image of the top surface of the motor; the five-sided inspection device includes a second support, a motor gripping mechanism, and a five-sided inspection mechanism, the second support being disposed on the frame and located above the conveying device, the motor gripping mechanism being configured to grip the motors in the material tray and place them in the five-sided inspection mechanism, and the five-sided inspection mechanism being configured to... The five-sided inspection mechanism is designed to simultaneously inspect the bottom and four sides of the motor. It includes a motor placement platform, a reflector group, and a camera. The motor placement platform is transparent and configured to place the motor. The reflector group surrounds the four sides of the motor placement platform and is configured to reflect the images of the four sides of the motor so that they are presented on the same plane as the image of the bottom of the motor. The camera is positioned directly below the motor placement platform and is configured to acquire images of the bottom and four sides of the motor. An endoscopic inspection device is positioned between the top inspection device and the five-sided inspection device along the conveying direction of the conveying device. The endoscopic inspection device includes a first NG line and a second NG line. It is configured to inspect the internal condition of the motor, reject motors that fail the endoscopic inspection before the five-sided inspection device, and move the defective motors to the first NG line or the second NG line according to their grade.

[0007] According to an embodiment of the present invention, a motor appearance inspection production line has at least the following beneficial effects: An endoscopic inspection device is positioned between the top surface inspection device and the five-sided inspection device. It first completes the inspection of the motor's internal condition during the appearance inspection process and removes motors that fail the endoscopic inspection before the five-sided inspection, preventing unqualified motors from continuing to flow into the time-consuming and complex five-sided inspection station, thus saving inspection resources. The endoscopic inspection device, in conjunction with the first and second NG lines, performs grading processing on motors that fail the endoscopic inspection, separating repairable motors from unrepairable motors to different NG lines, facilitating subsequent classification and disposal, and improving the precision of production management. The five-sided inspection mechanism adopts a transparent motor placement platform combined with a surrounding reflector group and a bottom single camera. Transmission imaging of the motor's bottom surface and reflection imaging of the four sides are obtained in a single exposure on the same focal plane, allowing simultaneous inspection of all five sides without flipping the motor. This significantly reduces the operation time of multi-sided inspection and eliminates the constraint of flipping actions on production cycle time.

[0008] According to some embodiments of the present invention, the conveying device includes a conveying frame, a plurality of conveying wheels, and a conveyor belt. The conveying frame is disposed on the frame, and there are two sets of conveying frames, which are spaced apart. A plurality of conveying wheels are rotatably connected to the side wall of each set of conveying frames. There are two sets of conveyor belts, which are respectively wound around the conveying wheels belonging to different conveying frames. The conveying wheels are connected to a driving device to drive the conveyor belts to move along the conveying direction. The two sides of the material tray overlap the two sets of conveyor belts.

[0009] According to some embodiments of the present invention, the conveying device further includes a plurality of lifting mechanisms disposed on the frame and located below the conveying device. The lifting mechanisms are configured to lift the tray on the conveyor belt to separate it from the conveyor belt and facilitate subsequent inspection.

[0010] According to some embodiments of the present invention, the lifting mechanism includes a lifting bracket, a lifting cylinder, and a lifting plate. The lifting bracket is disposed between two sets of the conveying frames, the lifting cylinder is disposed on the lifting bracket, and the lifting plate is connected to the output end of the lifting cylinder. The lifting plate rises or falls under the drive of the lifting cylinder.

[0011] According to some embodiments of the present invention, the top surface detection device further includes a first slide rail, a first slide table, a second slide rail, a second slide table, a third slide rail, and a third slide table. The first slide rail is connected to the first bracket and extends along the Y-axis direction. The first slide table is slidably connected to the first slide rail. The second slide rail is connected to the first slide table and extends along the X-axis direction. The second slide table is slidably connected to the second slide rail. The third slide rail is connected to the second slide table and extends along the Z-axis direction. The third slide table is slidably connected to the third slide rail. The top surface detection module is connected to the third slide table.

[0012] According to some embodiments of the present invention, the motor gripping mechanism further includes a fourth slide rail, a fourth slide table, a fifth slide rail, a fifth slide table, a pen-collecting lifting bracket, and a pen-collecting lifting cylinder. The fourth slide rail is connected to the second bracket and extends along the Y-axis direction. The fourth slide table is slidably connected to the fourth slide rail. The fifth slide rail is connected to the fourth slide table and extends along the X-axis direction. The fifth slide table is slidably connected to the fifth slide rail. The pen-collecting lifting bracket is connected to the fifth slide table and extends along the Z-axis direction. The pen-collecting lifting cylinder is slidably connected to the pen-collecting lifting bracket. The pen-collecting lifting cylinder and the pen-collecting lifting bracket are in several groups. The output end of each group of pen-collecting lifting cylinders is connected to a pen. The pen is configured as a gripping motor.

[0013] According to some embodiments of the present invention, the motor gripping mechanism further includes a pen suction distance adjustment assembly, which includes an adjustment frame, an adjustment rail, and an adjustment member. The adjustment frame is connected to the fifth slide table, the adjustment rail is disposed on the adjustment frame and extends along the X-axis direction, the adjustment member is slidably connected to the adjustment rail, and the pen suction lifting bracket is disposed on the adjustment member.

[0014] According to some embodiments of the present invention, there are several five-sided detection mechanisms, and the several five-sided detection mechanisms further include a detection bracket, a reflector stage, and a prism box. The detection bracket is disposed on the frame, the reflector stage is connected to the detection bracket, and a detection port is provided on the reflector stage. The detection port is square. A reflector group is disposed on the reflector stage, and the reflector group includes four reflectors, which are respectively disposed on the four sides of the detection port. A motor placement stage is connected to the reflector stage and is configured to house a motor. The motor is placed behind the motor placement stage, and the four sets of reflectors are respectively facing the four sides of the motor. The prism box is connected to the detection bracket and is located directly below the reflector stage. The reflector group is configured to project the side of the motor onto the prism box, and the prism box is configured to adjust the direction of the image reflected by the reflector group. The camera is connected to the detection bracket and is located directly below the prism box.

[0015] According to some embodiments of the present invention, the endoscopic inspection device further includes a tooling moving assembly and a probe lifting assembly. The tooling moving assembly is connected to the frame and is configured to drive the motor under test along the Y-axis toward the probe lifting assembly. The probe lifting assembly is disposed on the frame and is configured to drive the probe to move along the Z-axis to detect the internal condition of the motor. The first NG line and the second NG line are respectively disposed on both sides of the tooling moving assembly along the X-axis. The first NG line is configured to place and move a defective but repairable motor, and the second NG line is configured to place and move an unrepairable motor. The endoscopic inspection device further includes another set of motor gripping mechanisms, which are configured to grip the motor under test in the conveying device and place it in the tooling moving assembly. After the motor is inspected, the motor gripping mechanism places the motor in the tray located on the first NG line or the second NG line according to the inspection result.

[0016] According to some embodiments of the present invention, the tooling moving assembly includes a tooling moving track, a tooling slide, and a motor fixture. The tooling moving track is disposed on the frame and extends along the Y-axis. The tooling slide is slidably connected to the tooling moving track. The motor fixture is disposed on the tooling slide and has a plurality of detection stations for accommodating motors. The probe lifting assembly includes a probe lifting platform, a probe lifting rail, a probe clamping platform, and a plurality of probes. The probe lifting platform is disposed on the frame and located at one end of the tooling moving track. The probe lifting rail is disposed on the probe lifting platform and extends along the Z-axis. The probe clamping platform is slidably connected to the probe lifting rail, and the plurality of probes are disposed on the probe clamping platform.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the top surface detection device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the conveying device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the lifting mechanism according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the five-sided detection device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the motor gripping mechanism according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the five-sided detection mechanism according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the endoscopic detection device according to an embodiment of the present invention. Figure 1 ; Figure 9 This is a schematic diagram of the structure of the endoscopic detection device according to an embodiment of the present invention. Figure 2 ; Figure 10 This is a schematic diagram of the tooling moving assembly and probe lifting assembly of the present invention.

[0019] Icon labels: Rack 10; Conveying device 20, conveying frame 21, conveying wheel 22, conveyor belt 23, lifting mechanism 24, lifting bracket 241, lifting cylinder 242, lifting plate 243; Top surface detection device 30, first bracket 31, top surface detection module 32, first slide rail 33, first slide table 34, second slide rail 35, second slide table 36, third slide rail 37, third slide table 38; Five-sided detection device 40, second bracket 41, motor gripping mechanism 42, fourth slide rail 421, fourth slide table 422, fifth slide rail 423, fifth slide table 424, pen lifting bracket 425, pen lifting cylinder 426, pen 427, pen spacing adjustment assembly 428, adjustment frame 428a, adjustment rail 428b, adjustment component 428c, five-sided detection mechanism 43, detection bracket 431, reflector stage 432, reflector group 433, motor placement stage 434, prism box 435, camera 436, detection port 437; 50 trays; Endoscopic inspection device 60, tooling moving assembly 61, tooling moving track 611, tooling slide 612, motor tooling 613, inspection station 613a, probe lifting assembly 62, probe lifting platform 621, probe lifting rail 622, probe clamping platform 623, probe 624, first NG line 63, second NG line 64. Detailed Implementation

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0021] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] Reference Figures 1 to 10 The present invention discloses a motor appearance inspection production line, including a frame 10, a conveying device 20, a top surface inspection device 30, a five-sided inspection device 40, and an endoscopic inspection device 60.

[0024] A conveying device 20 is mounted on a frame 10. The conveying device 20 is configured as a conveying tray 50, which contains several motors. A top surface detection device 30 and a five-sided detection device 40 are sequentially arranged along the conveying direction of the conveying device 20. The top surface detection device 30 includes a first support 31 and a top surface detection module 32. The first support 31 is mounted on the frame 10 and located above the conveying device 20. The top surface detection module 32 is movably connected to the first support 31 and is configured to move directly above the motor to obtain an image of the motor's top surface. The five-sided detection device 40 includes a second support 41, a motor gripping mechanism 42, and a five-sided detection mechanism 43. The second support 41 is mounted on the frame 10 and located above the conveying device 20. The motor gripping mechanism 42 is configured to grip the motor in the material tray 50 and place it in the five-sided detection mechanism 43. The five-sided detection mechanism 43 is configured to simultaneously detect the bottom surface and four sides of the motor. The five-sided detection mechanism 43 includes a motor placement platform 434, a reflector group 433, and a camera 436. The motor placement platform 434 is transparent and is configured to place the motor. The reflector group 433 is arranged around the four sides of the motor placement platform 434 and is configured to reflect the images of the four sides of the motor so that they are presented on the same plane as the image of the bottom surface of the motor. The camera 436 is located directly below the motor placement platform 434 and is configured to acquire images of the bottom surface and four sides of the motor. An endoscopic inspection device 60 is disposed between the top surface inspection device 30 and the five-sided inspection device 40 along the conveying direction of the conveying device 20. The endoscopic inspection device 60 includes a first NG line 63 and a second NG line 64. The endoscopic inspection device 60 is configured to inspect the internal condition of the motor, reject motors that fail the endoscopic inspection before the five-sided inspection device 40, and move the unqualified motors to the first NG line 63 or the second NG line 64 in stages.

[0025] It should be noted that after the top surface inspection module acquires an image of the top surface of the motor, the image can be processed by the control system, and then the inspection image can be compared with the sample image to obtain the inspection result; alternatively, the inspection image can be manually inspected to determine whether the appearance of the motor is qualified.

[0026] Understandably, the endoscopic inspection device 60 is positioned between the top surface inspection device 30 and the five-sided inspection device 40. It first inspects the internal condition of the motor during the visual inspection process and removes motors that fail the endoscopic inspection before the five-sided inspection. This prevents unqualified motors from continuing to flow into the time-consuming and complex five-sided inspection station, saving inspection resources. The endoscopic inspection device 60, in conjunction with the first NG line 63 and the second NG line 64, classifies unqualified motors, separating repairable motors from unrepairable motors to different NG lines for easier subsequent classification and disposal, thus improving the precision of production management. The five-sided inspection mechanism 43 uses a transparent motor placement platform 434 with a surrounding reflector group 433 and a bottom single camera 436. Transmission imaging of the motor's bottom surface and reflection imaging of the four sides are obtained in a single exposure on the same focal plane, allowing simultaneous inspection of all five sides without flipping the motor. This significantly reduces the operation time of multi-sided inspection and eliminates the constraint of flipping actions on production cycle time.

[0027] Understandably, the material tray 50 carries several motors that are continuously conveyed by the conveyor device 20, passing sequentially through the top surface inspection device 30 and the five-sided inspection device 40, forming a streamlined inspection cycle. The top surface inspection module 32 is movably mounted on the first bracket 31 and can be precisely moved to directly above each motor to complete the top surface image acquisition without manual handling. The motor gripping mechanism 42 grips the motor from the material tray 50 and places it into the five-sided inspection mechanism 43. The five-sided inspection mechanism 43 utilizes the optical path coordination between the reflector group and the prism box to simultaneously acquire clear images of the bottom surface and four sides of the motor in a single placement, completely eliminating the need for flipping and secondary positioning processes, significantly shortening the inspection cycle, increasing the overall production capacity, and effectively reducing the risk of secondary damage to the motor during the flipping process.

[0028] Reference Figure 3 and Figure 4 The conveying device 20 includes a conveying frame 21, several conveying wheels 22, and a conveyor belt 23. The conveying frame 21 is mounted on the frame 10. There are two sets of conveying frames 21, which are spaced apart. Several conveying wheels 22 are rotatably connected to the side wall of each set of conveying frames 21. There are two sets of conveyor belts 23, which are respectively wound around the conveying wheels 22 belonging to different conveying frames 21. The conveying wheels 22 are connected to the driving device and drive the conveyor belts 23 to move along the conveying direction. The two sides of the conveying tray 50 overlap the two sets of conveyor belts 23.

[0029] Two sets of conveyor frames 21 are spaced apart, and two sets of conveyor belts 23 support the two sides of the material tray 50 respectively, so that the material tray 50 is stably placed on the conveyor belts 23 and moves forward synchronously, avoiding the risk of the material tray tilting or tipping over due to single-sided support. The conveyor wheels 22 are rotatably connected to the side wall of the conveyor frame 21 and are driven by a unified drive device, ensuring the consistency of the linear speed of the two conveyor belts 23, ensuring that the material tray 50 remains stable and without deviation during the conveying process, laying the foundation for accurate positioning of subsequent testing stations.

[0030] Reference Figure 4 The conveying device 20 also includes several lifting mechanisms 24, which are mounted on the frame 10 and located below the conveying device 20. The lifting mechanisms 24 are configured to lift the conveying tray 50 on the conveyor belt 23 to separate it from the conveyor belt 23 and facilitate subsequent inspection.

[0031] The lifting mechanism 24 lifts the positioned tray 50 from the conveyor belt 23, separating the tray 50 from the conveyor belt 23. This eliminates the interference of the continuous movement of the conveyor belt 23 on the positioning accuracy of the tray 50, ensuring that the tray 50 remains absolutely stationary at the inspection station. This design resolves the contradiction between conveying and positioning, achieving precise fixing of the tray at a single station without stopping the entire conveyor line. This ensures the operational accuracy of the top surface inspection module 32 and the motor gripping mechanism 42, thereby improving inspection reliability and gripping success rate.

[0032] Reference Figure 4 The lifting mechanism 24 includes a lifting bracket 241, a lifting cylinder 242, and a lifting plate 243. The lifting bracket 241 is disposed between two sets of conveyor frames 21. The lifting cylinder 242 is disposed on the lifting bracket 241. The lifting plate 243 is connected to the output end of the lifting cylinder 242. The lifting plate 243 rises or falls under the drive of the lifting cylinder 242.

[0033] The lifting bracket 241 is positioned between the two sets of conveyor frames 21, making full use of the spare space in the middle of the conveyor line. Its compact structure does not occupy space on either side of the conveyor line. The lifting cylinder 242 drives the lifting plate 243 to rise and fall, with rapid response and even application of lifting force to the bottom surface of the material tray 50, ensuring the levelness of the tray 50 after lifting. The cylinder-driven method is simple to control, easy to maintain, and highly reliable, enabling long-term stable operation under high-frequency production cycles.

[0034] Reference Figure 2The top surface detection device 30 also includes a first slide rail 33, a first slide table 34, a second slide rail 35, a second slide table 36, a third slide rail 37, and a third slide table 38. The first slide rail 33 is connected to the first bracket 31 and extends along the Y-axis. The first slide table 34 is slidably connected to the first slide rail 33. The second slide rail 35 is connected to the first slide table 34 and extends along the X-axis. The second slide table 36 is slidably connected to the second slide rail 35. The third slide rail 37 is connected to the second slide table 36 and extends along the Z-axis. The third slide table 38 is slidably connected to the third slide rail 37. The top surface detection module 32 is connected to the third slide table 38.

[0035] Three sets of slide rails and slide tables constitute an XYZ three-axis motion mechanism. The top surface detection module 32 can move precisely in three-dimensional space to any position directly above the motor within the material tray 50, achieving flexible adaptation to material trays of different specifications and motors with different arrangements. The third slide rail 37 and the third slide table 38 in the Z-axis direction give the top surface detection module 32 the ability to adjust its pitch and focus, and can adjust the shooting distance according to the motor height to ensure image clarity. The linkage of the XY axes enables the top surface detection module 32 to scan sequentially, one by one, and, in conjunction with a high-speed industrial camera, achieve efficient acquisition of top surface images for the entire batch, eliminating the need for manual handling and positioning of each item.

[0036] Reference Figure 5 and Figure 6 The motor gripping mechanism 42 also includes a fourth slide rail 421, a fourth slide table 422, a fifth slide rail 423, a fifth slide table 424, a pen-absorbing lifting bracket 425, and a pen-absorbing lifting cylinder 426. The fourth slide rail 421 is connected to the second bracket 41 and extends along the Y-axis. The fourth slide table 422 is slidably connected to the fourth slide rail 421. The fifth slide rail 423 is connected to the fourth slide table 422 and extends along the X-axis. The fifth slide table 424 is slidably connected to the fifth slide rail 423. The pen-absorbing lifting bracket 425 is connected to the fifth slide table 424 and extends along the Z-axis. The pen-absorbing lifting cylinder 426 is slidably connected to the pen-absorbing lifting bracket 425. There are several groups of pen-absorbing lifting cylinders 426 and pen-absorbing lifting brackets 425. The output end of each group of pen-absorbing lifting cylinders 426 is connected to a pen 427. The pen 427 is configured as a suction gripping motor.

[0037] The motor gripping mechanism 42 also adopts an XYZ three-axis motion structure, with the fourth to the suction pen lifting bracket slide working in tandem to enable the suction pen 427 to be precisely positioned above each motor in the material tray 50 and complete the suction gripping. The arrangement of several sets of suction pen lifting cylinders 426 and suction pens 427 enables the gripping mechanism to grip multiple motors simultaneously, significantly improving the single gripping efficiency, reducing the number of round trips, and further shortening the overall production line cycle time. The suction pen 427 uses a negative pressure suction method, which does not cause clamping damage to the motor surface and protects the appearance integrity of the inspected motor.

[0038] Reference Figure 6The motor gripping mechanism 42 also includes a pen suction distance adjustment assembly 428, which includes an adjustment frame 428a, an adjustment rail 428b, and an adjustment component 428c. The adjustment frame 428a is connected to the fifth slide table 424. The adjustment rail 428b is disposed on the adjustment frame 428a and extends along the X-axis. The adjustment component 428c is slidably connected to the adjustment rail 428b. The pen suction lifting bracket 425 is disposed on the adjustment component 428c.

[0039] The suction pen spacing adjustment component 428 allows the spacing between adjacent suction pens 427 to be changed by moving the sliding adjustment piece 428c along the adjustment rail 428b, thereby adapting to the arrangement spacing of motors in different sized trays 50. This allows for quick changeovers without replacing the entire gripping mechanism, significantly reducing the production line's dependence on specific motor specifications, improving the equipment's versatility and production flexibility, and reducing changeover downtime.

[0040] It should be noted that the motor gripping mechanism 42 can also place motors that fail the top surface inspection and five-sided inspection into the NG tray for output, and place qualified motors into the tray 50 for output.

[0041] Reference Figure 5 and Figure 7 The five-sided inspection mechanism 43 comprises several components, including an inspection bracket 431, a reflector stage 432, and a prism box 435. The inspection bracket 431 is mounted on the frame 10. The reflector stage 432 is connected to the inspection bracket 431. The reflector stage 432 has a square inspection port 437. A reflector assembly 433 is mounted on the reflector stage 432 and includes four reflectors, which are respectively positioned on the four sides of the inspection port 437. A motor placement platform 434 is also included. Connected to the reflector stage 432, the motor placement stage 434 is configured to house the motor. After the motor is placed on the motor placement stage 434, four sets of reflector groups 433 are respectively facing the four sides of the motor. The prism box 435 is connected to the detection bracket 431 and is located directly below the reflector stage 432. The reflector groups 433 are configured to project the sides of the motor onto the prism box 435. The prism box 435 is configured to adjust the direction of the image reflected by the reflector groups 433. The camera 436 is connected to the detection bracket 431 and is located directly below the prism box 435.

[0042] After the motor is placed on the motor mounting platform 434, the four mirrors of the reflector group 433 face the four sides of the motor, synchronously reflecting the images of the four sides to the prism box 435. The prism box 435 integrates and adjusts the reflected light paths in all directions, so that the images of the four sides and the bottom surface are converged to the camera 436 located directly below the prism box 435. This allows a single camera to simultaneously capture images of the bottom and four sides of the motor in a single exposure. This optical path design completely eliminates the need for multiple shots by flipping the motor in traditional solutions. Acquiring five images at once doubles the inspection efficiency and avoids indentations or scratches on the motor's appearance caused by the fixtures during flipping, protecting the integrity of the product's appearance. Several groups of five-sided inspection mechanisms 43 operate in parallel, further improving the overall inspection throughput of the line.

[0043] Reference Figures 8 to 10 The endoscopic inspection device 60 also includes a tooling moving assembly 61 and a probe lifting assembly 62. The tooling moving assembly 61 is connected to the frame 10 and is configured to drive the motor under test along the Y-axis to approach the probe lifting assembly 62. The probe lifting assembly 62 is mounted on the frame 10 and is configured to drive the probe to move along the Z-axis to detect the internal condition of the motor. The first NG line 63 and the second NG line 64 are respectively arranged on both sides of the tooling moving assembly 61 along the X-axis. The first NG line 63 is configured to place and move defective but repairable motors, and the second NG line 64 is configured to place and move unrepairable motors. The endoscopic inspection device 60 also includes another set of motor gripping mechanisms 42. The set of motor gripping mechanisms 42 is configured to grip the motor under test in the conveying device 20 and place it in the tooling moving assembly 61. After the motor is inspected, the motor gripping mechanism 42 places the motor into the tray 50 located on the first NG line 63 or the second NG line 64 according to the inspection result.

[0044] The tooling moving component 61 drives the motor under test to move along the Y-axis to below the probe lifting component 62. The probe lifting component 62 drives the probe to descend and extend into the internal cavity of the motor for detection. The two components work together to complete the automatic endoscopic inspection. The first NG line 63 and the second NG line 64 are respectively located on both sides of the tooling moving component 61, receiving two types of endoscopic defective motors: repairable and unrepairable, to achieve defect classification management and avoid mixing motors of different defect levels. Another set of motor gripping mechanisms 42 is independent of the motor gripping mechanism of the five-sided inspection device 40, forming an independent material handling subsystem for endoscopic inspection. Endoscopic inspection and visual inspection can operate in parallel without interfering with each other, achieving one-stop integration without sacrificing their respective inspection efficiency.

[0045] Reference Figure 10The tooling moving assembly 61 includes a tooling moving track 611, a tooling slide 612, and a motor tooling 613. The tooling moving track 611 is mounted on the frame 10 and extends along the Y-axis. The tooling slide 612 is slidably connected to the tooling moving track 611. The motor tooling 613 is mounted on the tooling slide 612 and has several detection stations 613a for accommodating motors. The probe lifting assembly 62 includes a probe lifting platform 621, a probe lifting rail 622, a probe clamping platform 623, and several probes 624. The probe lifting platform 621 is mounted on the frame 10 and located at one end of the tooling moving track 611. The probe lifting rail 622 is mounted on the probe lifting platform 621 and extends along the Z-axis. The probe clamping platform 623 is slidably connected to the probe lifting rail 622. Several probes 624 are mounted on the probe clamping platform 623.

[0046] The motor fixture 613 is equipped with several inspection stations 613a, which can load multiple motors at one time for sequential endoscopic detection. The fixture slide 612 moves stepwise along the fixture moving track 611, sending each inspection station 613a to the underside of the probe 624 one by one, realizing continuous multi-station detection. Several probes 624 descend synchronously and extend into the motor of the corresponding inspection station 613a, completing the parallel detection of multiple motors in one stroke, thus multiplying the detection efficiency. The probe lifting rail 622 provides precise guidance in the Z-axis direction, ensuring that the probe 624 is accurately positioned and moves smoothly when it extends into the motor cavity, avoiding damage to the internal structure of the motor.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A motor appearance inspection production line, characterized in that, include: frame; A conveying device is mounted on the frame and configured as a conveying tray. The tray contains several motors and a top surface detection device and a five-sided detection device are sequentially arranged along the conveying direction of the conveying device. The top surface detection device includes a first bracket and a top surface detection module. The first bracket is disposed on the frame and located above the conveying device. The top surface detection module is movably connected to the first bracket and is configured to move directly above the motor to obtain an image of the top surface of the motor. The five-sided detection device includes a second support, a motor gripping mechanism, and a five-sided detection mechanism. The second support is mounted on the frame and located above the conveying device. The motor gripping mechanism is configured to grip the motor in the tray and place it in the five-sided detection mechanism. The five-sided detection mechanism is configured to simultaneously detect the bottom surface and four sides of the motor. The five-sided detection mechanism includes a motor placement platform, a reflector group, and a camera. The motor placement platform is transparent and is configured to place a motor. The reflector group is arranged around the four sides of the motor placement platform and is configured to reflect the images of the four sides of the motor so that they are presented on the same plane as the image of the bottom surface of the motor. The camera is located directly below the motor placement platform and is configured to acquire images of the bottom surface and the four sides of the motor. An endoscopic inspection device is disposed between the top surface inspection device and the five-sided inspection device along the conveying direction of the conveying device. The endoscopic inspection device includes a first NG line and a second NG line. The endoscopic inspection device is configured to inspect the internal condition of the motor, reject motors that fail the endoscopic inspection in front of the five-sided inspection device, and move the unqualified motors to the first NG line or the second NG line in stages.

2. The motor appearance inspection production line according to claim 1, characterized in that, The conveying device includes a conveyor frame, several conveyor wheels, and a conveyor belt. The conveyor frame is mounted on the machine frame. There are two sets of conveyor frames, which are spaced apart. Several conveyor wheels are rotatably connected to the side wall of each set of conveyor frames. There are two sets of conveyor belts, which are respectively wound around the conveyor wheels belonging to different conveyor frames. The conveyor wheels are connected to a drive device to drive the conveyor belts to move along the conveying direction. The two sides of the material tray overlap the two sets of conveyor belts.

3. The motor appearance inspection production line according to claim 2, characterized in that, The conveying device also includes several lifting mechanisms, which are mounted on the frame and located below the conveying device. The lifting mechanisms are configured to lift the trays on the conveyor belt to separate them from the conveyor belt and facilitate subsequent inspection.

4. The motor appearance inspection production line according to claim 3, characterized in that, The lifting mechanism includes a lifting bracket, a lifting cylinder, and a lifting plate. The lifting bracket is disposed between the two sets of conveying frames. The lifting cylinder is disposed on the lifting bracket. The lifting plate is connected to the output end of the lifting cylinder. The lifting plate rises or falls under the drive of the lifting cylinder.

5. A motor appearance inspection production line according to claim 1, characterized in that, The top surface detection device further includes a first slide rail, a first slide table, a second slide rail, a second slide table, a third slide rail, and a third slide table. The first slide rail is connected to the first bracket and extends along the Y-axis direction. The first slide table is slidably connected to the first slide rail. The second slide rail is connected to the first slide table and extends along the X-axis direction. The second slide table is slidably connected to the second slide rail. The third slide rail is connected to the second slide table and extends along the Z-axis direction. The third slide table is slidably connected to the third slide rail. The top surface detection module is connected to the third slide table.

6. The motor appearance inspection production line according to claim 1, characterized in that, The motor gripping mechanism further includes a fourth slide rail, a fourth slide table, a fifth slide rail, a fifth slide table, a pen-collecting lifting bracket, and a pen-collecting lifting cylinder. The fourth slide rail is connected to the second bracket and extends along the Y-axis. The fourth slide table is slidably connected to the fourth slide rail. The fifth slide rail is connected to the fourth slide table and extends along the X-axis. The fifth slide table is slidably connected to the fifth slide rail. The pen-collecting lifting bracket is connected to the fifth slide table and extends along the Z-axis. The pen-collecting lifting cylinder is slidably connected to the pen-collecting lifting bracket. There are several groups of pen-collecting lifting cylinders and pen-collecting lifting brackets. The output end of each group of pen-collecting lifting cylinders is connected to a pen. The pen is configured as a gripping motor.

7. A motor appearance inspection production line according to claim 6, characterized in that, The motor gripping mechanism also includes a pen suction distance adjustment assembly, which includes an adjustment frame, an adjustment rail, and an adjustment component. The adjustment frame is connected to the fifth slide table, the adjustment rail is disposed on the adjustment frame and extends along the X-axis direction, the adjustment component is slidably connected to the adjustment rail, and the pen suction lifting bracket is disposed on the adjustment component.

8. A motor appearance inspection production line according to claim 1, characterized in that, The five-sided detection mechanism comprises several components, each including a detection bracket, a reflector stage, and a prism box. The detection bracket is mounted on the frame, and the reflector stage is connected to the detection bracket. The reflector stage has a square detection port. A set of four reflectors is mounted on the reflector stage, each positioned on one of the four sides of the detection port. A motor placement stage is connected to the reflector stage and is configured to house the motor, which is placed behind the stage. The four sets of reflectors face the four sides of the motor. The prism box is connected to the detection bracket and located directly below the reflector stage. The reflector stage is configured to project the sides of the motor onto the prism box, and the prism box is configured to adjust the direction of the reflected image. A camera is connected to the detection bracket and located directly below the prism box.

9. A motor appearance inspection production line according to claim 1, characterized in that, The endoscopic inspection device further includes a tooling moving assembly and a probe lifting assembly. The tooling moving assembly is connected to the frame and is configured to drive the motor under test along the Y-axis towards the probe lifting assembly. The probe lifting assembly is mounted on the frame and is configured to drive the probe to move along the Z-axis to detect the internal condition of the motor. The first NG line and the second NG line are respectively arranged on both sides of the tooling moving assembly along the X-axis. The first NG line is configured to place and move defective but repairable motors, and the second NG line is configured to place and move unrepairable motors. The endoscopic inspection device also includes another set of motor gripping mechanisms. This set of motor gripping mechanisms is configured to grip the motor under test in the conveying device and place it in the tooling moving assembly. After the motor is inspected, the motor gripping mechanism places the motor into the tray located on the first NG line or the second NG line according to the inspection result.

10. A motor appearance inspection production line according to claim 9, characterized in that, The tooling moving assembly includes a tooling moving track, a tooling slide, and a motor fixture. The tooling moving track is mounted on the frame and extends along the Y-axis. The tooling slide is slidably connected to the tooling moving track. The motor fixture is mounted on the tooling slide and has several detection stations for accommodating motors. The probe lifting assembly includes a probe lifting platform, a probe lifting rail, a probe clamping platform, and several probes. The probe lifting platform is mounted on the frame and located at one end of the tooling moving track. The probe lifting rail is mounted on the probe lifting platform and extends along the Z-axis. The probe clamping platform is slidably connected to the probe lifting rail, and several probes are mounted on the probe clamping platform.

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