AOI detection equipment and assembly line

Abstract

The utility model discloses AOI detection equipment and an assembly line, which are used for realizing the automation of the detection of an inverter drive board and improving the detection efficiency and the accuracy of a test result. The AOI detection equipment is used for detecting a drive board of an inverter and comprises a feeding mechanism, a detection mechanism and a tray, and the tray is used for bearing the inverter; the detection mechanism comprises an image acquisition module; the feeding mechanism comprises at least one lifting assembly and two conveyor belts arranged at intervals, the tray is arranged on the two conveyor belts, the two conveyor belts are used for driving the tray to move in the first direction, and the lifting assembly is arranged below the two conveyor belts and located between the two conveyor belts; the lifting assembly is used for driving the tray to move in the second direction so that the tray can be close to or away from the image collecting module, the feeding mechanism can receive an instruction of the control system to move the tray to the detection station, and when the tray reaches the detection station, the image collecting module receives the instruction of the control system to collect images of the driving plate.

Description

Technical Field

[0001] The present application relates to the technical field of testing equipment, and in particular to an AOI testing equipment and an assembly line. Background Art

[0002] The motor is the core component of the car. When the motor is working, the inverter's control output to the motor affects the running state of the whole vehicle. When the inverter is working, environmental factors such as temperature rise caused by vibration, dust and poor circulation cooling effect will cause problems with the soldering of the inverter's driver board solder joints, making the motor control system output unstable and affecting the normal operation of the motor. Therefore, it is necessary to detect whether the quality of the driver board's solder joints is qualified, so as to extend the life of the motor and reduce the maintenance cycle.

[0003] During the detection, if the traditional manual detection is adopted, it is easy to be interfered by human factors, resulting in inaccurate detection results and low detection efficiency. Therefore, it is urgent to provide a device that can automatically detect the inverter. Utility Model Content

[0004] The present application discloses an AOI inspection device and apparatus and an assembly line, which are used to realize automation of inverter inspection, improve inspection efficiency, and improve the accuracy of test results.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] On the one hand, the present application provides an AOI inspection device for inspecting a drive board of an inverter. The AOI inspection device includes: a feeding mechanism, a detection mechanism and a tray, wherein:

[0007] The tray is used to carry the inverter;

[0008] The detection mechanism includes an image acquisition module;

[0009] The loading mechanism includes at least one lifting assembly and two conveyor belts arranged at intervals, the tray is arranged on the two conveyor belts, the two conveyor belts are used to drive the tray to move along a first direction, the lifting assembly is arranged below the two conveyor belts and between the two conveyor belts; the lifting assembly is used to drive the tray to move along a second direction so that the tray approaches or moves away from the image acquisition module, the second direction is perpendicular to the first direction, and the image acquisition module is arranged above the two conveyor belts;

[0010] The feeding mechanism is used to receive the electrical signal of the control system to move the tray to the detection station; when the tray reaches the detection station, the image acquisition module is used to receive the electrical signal of the control system to acquire the image of the driving board.

[0011] In the above embodiment, the loading mechanism of the AOI inspection equipment can automatically move the inverter to the inspection station, eliminating the trouble of manual handling, reducing the labor intensity of workers, and improving the inspection efficiency. The image acquisition module has a camera, which uses automatic optical detection instead of manual naked eye detection, eliminating the detection deviation caused by human interference, making the detection result more reliable and more efficient.

[0012] In one embodiment, the detection mechanism also includes a first mobile module and a second mobile module, the image acquisition module is fixedly installed on the first mobile module, the first mobile module is installed on the second mobile module, the first mobile module is used to drive the image acquisition module to move along the first direction, and the second mobile module is used to drive the first mobile module to move along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0013] In one embodiment, the first moving module includes a first motor and a first slide, the first motor is used to drive the first slide to move along the first direction, and the image acquisition module is installed on the first slide;

[0014] The AOI inspection equipment also includes a first bracket and a second bracket spaced apart along the first direction, the second movable module includes a second motor and a second slide, one end of the second slide is slidably connected to the first bracket, the other end of the second slide is slidably connected to the second bracket, the first movable module is installed on the second slide, and the second motor drives the second slide to move along the third direction.

[0015] In one embodiment, the AOI inspection device further includes a first mounting plate and a second mounting plate, the lifting assembly is connected between the first mounting plate and the second mounting plate, and the first bracket and the second bracket are mounted on the second mounting plate.

[0016] In one embodiment, the lifting assembly includes a base and a pallet, the pallet is installed on the base, a positioning pin is provided on the side of the pallet facing the pallet, and the pallet has a positioning hole on the side facing the pallet, and the positioning pin is inserted into the positioning hole to fix the position of the pallet.

[0017] In one embodiment, the end of the positioning pin facing away from the support plate has a tapered surface, and the end with a smaller tapered surface is away from the support plate.

[0018] In one embodiment, the loading mechanism also includes a frame and a first position detection module, the frame includes two parallel and spaced-apart tracks, and each conveyor belt is installed on one of the tracks; the first position detection module is installed on the inner side of the track, and the first position detection module is used to detect the position of the pallet.

[0019] In one embodiment, the feeding mechanism further includes a frame and a second position detection module, the frame includes two parallel and spaced tracks, each of the conveyor belts is installed on one of the tracks; the second position detection module is installed on the inner side of the track, and the second position detection module is used to detect the position of the inverter;

[0020] The tray has an avoidance hole, and the inverter is mounted on the tray and at least partially covers the avoidance hole.

[0021] In one embodiment, the feeding mechanism further includes an RFID reader / writer, the lifting assembly includes a base, the RFID reader / writer is installed on the base, and the RFID reader / writer is used to read the pallet information and send the pallet information to the control system.

[0022] In one embodiment, the loading mechanism further includes a blocking mechanism, which is installed between the two conveyor belts and located downstream of the conveyor belts, and is used to limit the tray from moving downstream.

[0023] In one embodiment, the feeding mechanism further includes a non-return mechanism, which is installed between the two conveyor belts and located upstream of the conveyor belts, and is used to limit the upstream movement of the tray.

[0024] On the other hand, the present application also provides an assembly line, which includes a conveyor line and the above-mentioned AOI inspection equipment, and the conveyor line is connected to the two conveyor belts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A front view of an AOI inspection device provided in one embodiment of the present application;

[0026] Figure 2 A side view of a feeding mechanism and a detection mechanism provided in one embodiment of the present application;

[0027] Figure 3 A schematic diagram of the positions of two lifting assemblies and an RFID reader provided in one embodiment of the present application;

[0028] Figure 4 A bottom schematic diagram of a tray and an inverter provided for an embodiment of the present application;

[0029] Figure 5 An assembly diagram of a frame, a first position detection module, a second position detection module, a blocking mechanism, and a lifting assembly provided for an embodiment of the present application;

[0030] 100-inverter; 1-tray; 2-conveyor belt; 3-lifting assembly; 301-first lifting assembly; 302-second lifting assembly; M-first direction; N-second direction; Q-third direction; 4-image acquisition module; 5-first moving module; 51-first motor; 52-first lead screw; 53-first slide; 6-second moving module; 61-second motor; 62-second lead screw; 63-second slide; 7-first bracket; 8-second bracket; 9-slide rail; 31-base; 32-lifting cylinder; 33-support plate; 34-locating pin; 11-locating hole; 12-frame; 13-tray body; 201-frame; 2011-track; 21-first position detection module; 22-second position detection module; 14-avoidance hole; 23-RFID reader; 24-blocking mechanism; 26-RFID tag; 101-first mounting plate; 102-second mounting plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] First, let's introduce the application scenario. The driver board in the car inverter may have problems with the solder joints under the influence of environmental factors. Or, the driver board may have welding defects such as pull-point, tin connection, cold soldering, leaking solder, tin slag, and tin leaking at the solder joints when it leaves the factory. Problems with the solder joints of the driver board will cause unstable output of the motor control system and affect the normal operation of the inverter. Automatic optical inspection (AOI, Automated Optical Inspection) is based on optical principles to detect common defects encountered in welding production. The high-definition CCD camera automatically scans the product to be tested and collects images of the test points. The system compares the test points with the various parameters in the database, and checks the defects of the product after image processing. The defects are displayed / marked through a display or automatic mark for maintenance personnel to repair and STM engineers to improve the product manufacturing process. The external control system detects product defects through recognition algorithms: combining machine learning and deep learning AI algorithms for analysis and comparison processing. It can replace manual visual inspection, with more accurate detection results and higher detection efficiency.

[0033] Figure 1 This is a front view of an AOI inspection device provided by an embodiment of the present application. Figure 1 As shown, an embodiment of the present application provides an AOI inspection device for quality inspection of solder joints welded at the pin position on the drive board of the inverter 100. The AOI inspection device includes: a feeding mechanism, a detection mechanism, and a tray 1. The tray 1 is used to carry the inverter 100 of the car, and the inverter 100 is installed with a drive board. A tool is installed on the tray 1, and the tool can fix the inverter 100 on the tray 1 to prevent the inverter 100 from shaking. The above-mentioned detection mechanism includes an image acquisition module 4 for collecting images of solder joints on the drive board. The feeding mechanism includes at least one lifting component 3 and two conveyor belts 2 arranged at intervals. The tray 1 is arranged on the two conveyor belts 2, and the two conveyor belts 2 are used to drive the tray 1 to move along the first direction M. The lifting component 3 is arranged below the two conveyor belts 2 and between the two conveyor belts 2. When the tray 1 moves to the preset position of the conveyor belt 2, the lifting component 3 lifts the tray 1 to move it along the second direction N, so that the tray 1 is close to or away from the image acquisition module 4. The second direction N is perpendicular to the first direction M, and the image acquisition module 4 is disposed above the two conveyor belts 2 .

[0034] The feeding mechanism and the detection mechanism are electrically connected to the external control system respectively. The feeding mechanism receives the conveying command of the control system to move the pallet 1 to the detection station. When the pallet 1 arrives at the detection station, the image acquisition module 4 receives the camera command of the control system to capture the image of the drive board. The above-mentioned preset position refers to the upper position of the lifting component 3 on the conveyor belt 2. At this preset position, the lifting component 3 executes the lifting command sent by the control system to lift the pallet 1 to the detection station.

[0035] In the above embodiment, the loading mechanism of the AOI inspection equipment automatically moves the inverter 100 to the inspection station, eliminating the trouble of manual handling, reducing the labor intensity of workers, and improving the inspection efficiency. The image acquisition module has a camera, so that the AOI inspection equipment can realize optical inspection instead of manual naked eye inspection, eliminate the inspection deviation caused by human interference, and make the inspection result more reliable and more efficient.

[0036] Figure 2 A side view of a feeding mechanism and a detection mechanism provided in an embodiment of the present application, combined with Figure 1 and Figure 2In one embodiment, the detection mechanism further includes a first movable module 5 and a second movable module 6, the image acquisition module 4 is fixedly mounted on the first movable module 5, the first movable module 5 is mounted on the second movable module 6, the first movable module 5 is used to drive the image acquisition module 4 to move along a first direction M, and the second movable module 6 is used to drive the first movable module 5 to move along a third direction Q. The first direction M may be a horizontal direction, and the second direction N is perpendicular to the horizontal plane. The first direction M, the second direction N and the third direction Q are perpendicular to each other. The first movable module 5 and the second movable module 6 realize the displacement of the image acquisition module 4 at any position within the working plane formed by the first direction M and the third direction Q, so that the image acquisition module 4 is accurately positioned at the corresponding position and different areas of the driving plate are photographed and detected in turn according to needs.

[0037] In one embodiment, the first movable module 5 and the second movable module 6 may be lead screw sliding modules. Specifically, the first movable module 5 includes a first motor 51, a first lead screw 52 and a first slide 53. The first slide 53 is mounted on the first lead screw 52. The first lead screw 52 rotates under the drive of the first motor 51, thereby driving the first slide 53 to move. The image acquisition module 4 is fixedly connected to the first slide 53. The first motor 51 may be a servo motor. Under the drive of the first motor 51, the image acquisition module 4 can move along the first direction M.

[0038] The second movable module 6 includes a second motor 61, a second lead screw 62, and a second slide 63, and the first movable module 5 is installed on the second slide 63. In order to make the second movable module 6 move stably, the above-mentioned AOI detection equipment also includes a first bracket 7 and a second bracket 8 arranged at intervals along the first direction M, and the second slide 63 is erected between the first bracket 7 and the second bracket 8. One end of the second slide 63 is slidably connected to the first bracket 7, and the other end of the second slide 63 is slidably connected to the second bracket 8, and the second motor 61 and the second lead screw 62 are fixedly installed on the second bracket 8.

[0039] Specifically, the bottom of both ends of the second slide 63 may be provided with a first slider and a second slider, respectively, and the first bracket 7 and the second bracket 8 are provided with a slide rail 9, respectively, and the first slider and the second slider are slidably connected to the slide rail 9 of the first bracket 7 and the slide rail 9 of the second bracket 8, respectively, and the slide rail 9 can provide guidance for the first slider and the second slider. The second motor 61 may also be a servo motor, and under the drive of the second motor 61, the second lead screw 62 rotates to drive the second slide 63 to move along the third direction Q, thereby moving the image acquisition module along the third direction Q.

[0040] In one embodiment, the AOI inspection equipment further includes a first mounting plate 101 and a second mounting plate 102 that are spaced apart. The area of ​​the second mounting plate 102 is larger than that of the first mounting plate 101. The feeding mechanism further includes a frame 201, the frame 201 having two parallel and spaced apart tracks 2011, each conveyor belt 2 being mounted on a track 2011, and rollers being provided on the track 2011 to support the conveyor belt 2 so that it can carry a heavier pallet 1. The frame 201 is mounted on the first mounting plate 101 and the second mounting plate 102, and at the same time, the two conveyor belts 2 are respectively located above the first mounting plate 101 and the second mounting plate 102. The lifting assembly 3 is connected between the first mounting plate 101 and the second mounting plate 102. The first bracket 7 and the second bracket 8 of the above-mentioned inspection mechanism are mounted on the second mounting plate 102.

[0041] Figure 3 A schematic diagram of the positions of two lifting assemblies and an RFID reader provided in an embodiment of the present application, Figure 4 A bottom schematic diagram of a tray and an inverter provided in an embodiment of the present application. Figure 3 and Figure 4 In one embodiment, the lifting assembly 3 includes a base 31, a lifting cylinder 32 and a pallet 33. The lifting cylinder 32 is installed on the base 31. The lifting cylinder 32 and the pallet 33 are used to lift or lower the pallet 33. A positioning pin 34 is provided on the side of the pallet 33 away from the base 31, that is, the side facing the pallet 1. The positioning pin 34 is used to be plugged into the positioning hole 11 on the pallet 1 to position the pallet 1. The positioning hole 11 is located on the side of the pallet 1 facing the pallet 33.

[0042] In order to smoothly insert the positioning pin 34 into the positioning hole 11, the end of the positioning pin 34 facing away from the support plate 33 has a tapered surface, and the end with a smaller diameter of the tapered surface is away from the support plate 33. The tapered surface makes the end of the positioning pin 34 thinner, so that the positioning pin 34 can be smoothly inserted into the positioning hole 11. The opening of the positioning hole 11 can also be provided with a tapered inner wall, and the end with a larger diameter of the tapered inner wall faces the outside of the positioning hole 11, so that the opening diameter of the positioning hole 11 is larger, which is conducive to the insertion of the positioning pin 34.

[0043] In one embodiment, the AOI inspection device includes two lifting assemblies 3, and the two lifting assemblies 3 are arranged at intervals along the first direction M. When lifting the pallet 1, the use of two lifting assemblies can make the pallet 1 balanced and reduce the rollover. Specifically, the lifting assembly 3 includes a first lifting assembly 301 and a second lifting assembly 302, and the positioning pin 34 of the first lifting assembly 301 and the positioning pin 34 of the second lifting assembly 302 are located at opposite positions, that is, in the rectangular lifting plane formed by the positioning pin 34 of the first lifting assembly 301 and the second lifting assembly 302, the two positioning pins 34 can be located at the diagonal position of the rectangular plane, and accordingly, the positioning holes 1111 on the pallet 1 are also located at the diagonal position of the pallet, so that a better positioning effect can be achieved. In the process of lifting the lifting assembly 3, when the pallet 1 does not leave the conveyor belt 2, the pallet 1 creeps under the action of its own weight and the blocking action of the blocking mechanism 24 (the blocking mechanism 24 will be introduced later) so that the position of the pallet 1 is finely adjusted, so that the positioning pin 34 is inserted into the positioning hole 11.

[0044] Please continue to refer to Figure 4 In one embodiment, the tray 1 includes a frame 12 and a tray body 13, and the tray body 13 is located in the frame 12. The positioning hole 11 can be set in the frame 12. Along the first direction M, the thickness of the frame 12 is thicker than the thickness of the tray body 13, and the depth of the positioning hole 11 can be set deeper, thereby improving the reliability of the positioning of the tray 1.

[0045] Figure 5 An assembly diagram of a frame, a first position detection module, a second position detection module, a blocking mechanism, and a lifting assembly provided in accordance with an embodiment of the present application. Figure 3 and Figure 5 In one embodiment, the feeding mechanism further includes a first position detection module 21, and the first position detection module 21 is electrically connected to the control system. The first position detection module 21 is installed on the inner side of the track 2011, and the first position detection module 21 is used to detect the position of the tray 1. The inner side of the track 2011 refers to the opposite side of the two parallel tracks 2011. Specifically, the first position detection module 21 can be a magnetic induction switch. The first position detection module 21 is installed at a preset position on the inner side of the track 2011. When the tray 1 moves to the preset position, the first position detection module 21 detects the tray 1 and sends an electrical signal indicating that the tray 1 has reached the preset position to the control system. After receiving the electrical signal indicating that the tray 1 has reached the preset position, the control system sends a lifting electrical signal to the lifting component 3, and the cylinder of the lifting component 3 lifts the support plate 33, so that the tray 1 moves along the second direction N and gradually approaches the image acquisition module.

[0046] In order to prevent missed detection, in one embodiment, the feeding mechanism also includes a second position detection module 22, and the second position detection module 22 is electrically connected to the control system. The second position detection module 22 is installed on the inner side of the track 2011, and the position detection module is used to detect the position of the inverter 100. Specifically, the second position detection module 22 can be a photoelectric sensor switch. The tray 1 has an avoidance hole 14, the inverter 100 is installed on the tray 1, and along the second direction N, at least part of the inverter 100 covers the avoidance hole 14. When the tray 1 reaches the preset position, the avoidance hole 14 corresponds to the position of the photoelectric sensor switch. The optical path of the photoelectric sensor switch can pass through the avoidance hole 14 and illuminate the inverter 100, detect whether the inverter 100 has been installed on the tray 1, and reduce missed detection.

[0047] Combination Figure 1 and Figure 3 In one embodiment, the feeding mechanism further includes an RFID reader / writer 23, which is electrically connected to the control system and is used to read the information of the pallet 1. The lifting assembly 3 includes a base 31, and the RFID reader / writer 23 can be fixedly mounted on the base 31. An RFID tag 26 is installed at the bottom of the pallet 1, and the RFID tag 26 records the information of the pallet 1. When the pallet 1 reaches above the lifting assembly 3, the RFID reader / writer 23 reads the information of the pallet 1 and sends the information of the pallet 1 to the control system.

[0048] Please continue to refer to Figure 1 In one embodiment, the feeding mechanism further includes a blocking mechanism 24, and the blocking mechanism 24 is electrically connected to the control system. The blocking mechanism 24 is installed between the two conveyor belts 2 and is located downstream of the conveyor belt 2. The blocking mechanism 24 can be specifically installed on the frame 201, and the blocking mechanism 24 is used to limit the downstream movement of the tray 1. When the tray 1 moves to the preset position, the control system sends a command to the blocking mechanism 24, and the blocking mechanism 24 stops the tray 1. At the same time, the control system sends a command to the conveyor belt 2, and the conveyor belt 2 stops.

[0049] In one embodiment, the feeding mechanism may further include a non-return mechanism, which is electrically connected to the control system. The non-return mechanism is installed between the two conveyor belts 2 and is located upstream of the conveyor belts 2. The non-return mechanism is used to limit the upstream movement of the pallet 1. When the conveyor belt 2 runs in the reverse direction, the non-return mechanism can reduce the situation where the pallet 1 is separated from the conveyor belt 2.

[0050] It is worth noting that the above-mentioned blocking mechanism 24 and anti-return mechanism are well-known technologies in the field, and their specific structures are not repeated in this application.

[0051] In one embodiment, the image acquisition module 4 further includes a lighting assembly (not shown in the figure), which may include a light ring, which is arranged around the lens of the image acquisition module. The illumination of the lighting assembly is a≥900Lx. The image acquisition module may also include a position adjustment mechanism, which may be a motor or a lead screw assembly. The distance between the lens and the inverter 100 can be fine-tuned.

[0052] In one embodiment, the AOI detection device further includes a communication module (not shown in the figure), which is electrically connected to the control system and is used to remotely control the device. The communication module is based on TCP / IP and RS232 / Enternet protocols, has a standard Ethernet interface and an open I / O module, so that the AOI detection device has remote control capabilities.

[0053] In one embodiment, the control system may be a PLC controller. When the AOI detection device is working, the first position detection module 21 and the second position detection module 22 detect in real time whether there is a pallet 1 and an inverter 100 at the preset position. The preset position is above the lifting assembly 3 on the conveyor belt. At this position, the pallet 1 can change from moving along the first direction M to moving along the second direction N. When the first position detection module 21 detects the pallet 1 but the second position detection module 22 does not detect the inverter 100, the control system determines that the pallet 1 is an empty pallet 1, and releases the empty pallet 1 to continue to move along the first direction M on the conveyor belt 2. When the first position detection module 21 does not detect the pallet 1 but the second position detection module 22 detects the inverter 100, the control system determines that the preset position is abnormal: for example, the pallet 1 is not loaded with the inverter 100, and the shutdown alarm is issued. When the first position detection module 21 detects the pallet 1 and the second position detection module 22 detects the inverter 100, the control system determines that there is a drive board that needs to be detected, and sends an electrical signal to the RFID reader 23, instructing the RFID reader 23 to complete the reading of the information of the pallet 1 and send an electrical signal to the lifting component 3, instructing the lifting component 3 to lift the pallet 1 to the detection station, and the detection mechanism starts detection.

[0054] After the detection mechanism completes the detection of the drive board, the lifting assembly 3 descends to move the pallet 1 to the conveyor belt 2, and the lifting assembly 3 is now separated from the pallet 1. After the RFID reader rewrites the detected inverter 100 information into the RFID tag 26 on the pallet 1, the blocking mechanism 24 is unblocked and the conveyor belt 2 is started to continue to transport the pallet 1 to the next station or scrap warehouse, and the next pallet 1 is put into place, and the above loading and detection process is repeated.

[0055] In addition to being able to inspect the drive boards of new energy electric vehicles, the AOI inspection equipment of the present application can also be used to inspect solder joints or other components of circuit boards in the electronics, semiconductor and other industries, and has a wide range of application scenarios.

[0056] An embodiment of the present application also provides an assembly line, which includes a conveyor line and the AOI inspection equipment in any of the above embodiments. The conveyor line is docked with two conveyor belts of a feeding mechanism. The conveyor line transports the inverter to the feeding mechanism, and the feeding mechanism then transports the inverter 100 to the inspection station. After the inspection is completed, the inverter can be transported to the next station for assembly through the conveyor line. It is worth noting that the conveyor line can be docked with the upstream end of the conveyor belt, or it can be docked with the downstream end of the conveyor belt. The above-mentioned conveyor belt can also run in both directions. The assembly line realizes the automation of inverter detection, improves detection efficiency, and improves the accuracy of test results.

[0057] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An AOI inspection device for inspecting a drive board of an inverter, characterized in that: include: Feeding mechanism, detection mechanism and tray, among which, The tray is used to carry the inverter; The detection mechanism includes an image acquisition module; The loading mechanism includes at least one lifting assembly and two conveyor belts arranged at intervals, the tray is arranged on the two conveyor belts, the two conveyor belts are used to drive the tray to move along a first direction, the lifting assembly is arranged below the two conveyor belts and between the two conveyor belts; the lifting assembly is used to drive the tray to move along a second direction so that the tray approaches or moves away from the image acquisition module, the second direction is perpendicular to the first direction, and the image acquisition module is arranged above the two conveyor belts; The feeding mechanism is used to receive the electrical signal of the control system to move the tray to the detection station; when the tray reaches the detection station, the image acquisition module is used to receive the electrical signal of the control system to acquire the image of the driving board.

2. The AOI inspection equipment according to claim 1, characterized in that: The detection mechanism also includes a first movable module and a second movable module, the image acquisition module is fixedly mounted on the first movable module, the first movable module is mounted on the second movable module, the first movable module is used to drive the image acquisition module to move along the first direction, and the second movable module is used to drive the first movable module to move along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

3. The AOI inspection equipment according to claim 2, characterized in that: The first moving module includes a first motor and a first slide, the first motor is used to drive the first slide to move along the first direction, and the image acquisition module is installed on the first slide; The AOI inspection equipment also includes a first bracket and a second bracket spaced apart along the first direction, the second movable module includes a second motor and a second slide, one end of the second slide is slidably connected to the first bracket, the other end of the second slide is slidably connected to the second bracket, the first movable module is installed on the second slide, and the second motor drives the second slide to move along the third direction.

4. The AOI inspection equipment according to claim 3, characterized in that: The AOI inspection device further includes a first mounting plate and a second mounting plate, the lifting assembly is connected between the first mounting plate and the second mounting plate, and the first bracket and the second bracket are mounted on the second mounting plate.

5. The AOI inspection equipment according to claim 1, characterized in that: The lifting assembly includes a base and a pallet, the pallet is installed on the base, a positioning pin is provided on the side of the pallet facing the pallet, and a positioning hole is provided on the side of the pallet facing the pallet, and the positioning pin is inserted into the positioning hole to fix the position of the pallet.

6. The AOI inspection equipment according to claim 5, characterized in that: The end of the positioning pin facing away from the supporting plate has a tapered surface, and the end with a smaller tapered surface is away from the supporting plate.

7. The AOI inspection equipment according to claim 1, characterized in that: The feeding mechanism also includes a frame and a first position detection module. The frame includes two parallel and spaced tracks, and each conveyor belt is installed on one of the tracks. The first position detection module is installed on the inner side of the track, and the first position detection module is used to detect the position of the pallet.

8. The AOI inspection equipment according to claim 1, characterized in that: The feeding mechanism further includes a frame and a second position detection module, wherein the frame includes two parallel and spaced tracks, and each of the conveyor belts is mounted on one of the tracks; the second position detection module is mounted on the inner side of the track, and the second position detection module is used to detect the position of the inverter; The tray has an avoidance hole, and the inverter is mounted on the tray and at least partially covers the avoidance hole.

9. The AOI inspection equipment according to claim 1, characterized in that: The feeding mechanism further includes an RFID reader / writer, the lifting assembly includes a base, the RFID reader / writer is installed on the base, and the RFID reader / writer is used to read the pallet information and send the pallet information to the control system.

10. The AOI inspection equipment according to claim 1, characterized in that: The feeding mechanism further comprises a blocking mechanism, which is installed between the two conveyor belts and located downstream of the conveyor belts, and is used to limit the tray from moving downstream.

11. The AOI inspection equipment according to claim 1, characterized in that: The feeding mechanism further includes a non-return mechanism, which is installed between the two conveyor belts and located upstream of the conveyor belts. The non-return mechanism is used to limit the tray from moving upstream.

12. An assembly line, characterized in that: It comprises a conveyor line and the AOI inspection equipment according to any one of claims 1 to 11, wherein the conveyor line is connected to the two conveyor belts.

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